1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2009-2010 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
8 * This program is free software; you can redistribute it and/or *
9 * modify it under the terms of version 2 of the GNU General *
10 * Public License as published by the Free Software Foundation. *
11 * This program is distributed in the hope that it will be useful. *
12 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
13 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
14 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
15 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
16 * TO BE LEGALLY INVALID. See the GNU General Public License for *
17 * more details, a copy of which can be found in the file COPYING *
18 * included with this package. *
19 *******************************************************************/
21 #include <linux/interrupt.h>
22 #include <linux/mempool.h>
23 #include <linux/pci.h>
24 #include <linux/delay.h>
26 #include <scsi/scsi.h>
27 #include <scsi/scsi_host.h>
28 #include <scsi/scsi_transport_fc.h>
29 #include <scsi/scsi_bsg_fc.h>
30 #include <scsi/fc/fc_fs.h>
35 #include "lpfc_sli4.h"
38 #include "lpfc_disc.h"
39 #include "lpfc_scsi.h"
41 #include "lpfc_logmsg.h"
42 #include "lpfc_crtn.h"
43 #include "lpfc_vport.h"
44 #include "lpfc_version.h"
46 struct lpfc_bsg_event {
47 struct list_head node;
51 /* Event type and waiter identifiers */
56 /* next two flags are here for the auto-delete logic */
57 unsigned long wait_time_stamp;
60 /* seen and not seen events */
61 struct list_head events_to_get;
62 struct list_head events_to_see;
64 /* job waiting for this event to finish */
65 struct fc_bsg_job *set_job;
68 struct lpfc_bsg_iocb {
69 struct lpfc_iocbq *cmdiocbq;
70 struct lpfc_iocbq *rspiocbq;
71 struct lpfc_dmabuf *bmp;
72 struct lpfc_nodelist *ndlp;
74 /* job waiting for this iocb to finish */
75 struct fc_bsg_job *set_job;
78 struct lpfc_bsg_mbox {
82 /* job waiting for this mbox command to finish */
83 struct fc_bsg_job *set_job;
92 struct lpfc_bsg_event *evt;
93 struct lpfc_bsg_iocb iocb;
94 struct lpfc_bsg_mbox mbox;
99 struct list_head node;
106 #define BUF_SZ_4K 4096
107 #define SLI_CT_ELX_LOOPBACK 0x10
109 enum ELX_LOOPBACK_CMD {
110 ELX_LOOPBACK_XRI_SETUP,
114 #define ELX_LOOPBACK_HEADER_SZ \
115 (size_t)(&((struct lpfc_sli_ct_request *)NULL)->un)
117 struct lpfc_dmabufext {
118 struct lpfc_dmabuf dma;
124 * lpfc_bsg_send_mgmt_cmd_cmp - lpfc_bsg_send_mgmt_cmd's completion handler
125 * @phba: Pointer to HBA context object.
126 * @cmdiocbq: Pointer to command iocb.
127 * @rspiocbq: Pointer to response iocb.
129 * This function is the completion handler for iocbs issued using
130 * lpfc_bsg_send_mgmt_cmd function. This function is called by the
131 * ring event handler function without any lock held. This function
132 * can be called from both worker thread context and interrupt
133 * context. This function also can be called from another thread which
134 * cleans up the SLI layer objects.
135 * This function copies the contents of the response iocb to the
136 * response iocb memory object provided by the caller of
137 * lpfc_sli_issue_iocb_wait and then wakes up the thread which
138 * sleeps for the iocb completion.
141 lpfc_bsg_send_mgmt_cmd_cmp(struct lpfc_hba *phba,
142 struct lpfc_iocbq *cmdiocbq,
143 struct lpfc_iocbq *rspiocbq)
145 unsigned long iflags;
146 struct bsg_job_data *dd_data;
147 struct fc_bsg_job *job;
149 struct lpfc_dmabuf *bmp;
150 struct lpfc_nodelist *ndlp;
151 struct lpfc_bsg_iocb *iocb;
155 spin_lock_irqsave(&phba->ct_ev_lock, flags);
156 dd_data = cmdiocbq->context1;
158 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
162 iocb = &dd_data->context_un.iocb;
164 job->dd_data = NULL; /* so timeout handler does not reply */
166 spin_lock_irqsave(&phba->hbalock, iflags);
167 cmdiocbq->iocb_flag |= LPFC_IO_WAKE;
168 if (cmdiocbq->context2 && rspiocbq)
169 memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb,
170 &rspiocbq->iocb, sizeof(IOCB_t));
171 spin_unlock_irqrestore(&phba->hbalock, iflags);
174 rspiocbq = iocb->rspiocbq;
175 rsp = &rspiocbq->iocb;
178 pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
179 job->request_payload.sg_cnt, DMA_TO_DEVICE);
180 pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list,
181 job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
183 if (rsp->ulpStatus) {
184 if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
185 switch (rsp->un.ulpWord[4] & 0xff) {
186 case IOERR_SEQUENCE_TIMEOUT:
189 case IOERR_INVALID_RPI:
199 job->reply->reply_payload_rcv_len =
200 rsp->un.genreq64.bdl.bdeSize;
202 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
203 lpfc_sli_release_iocbq(phba, rspiocbq);
204 lpfc_sli_release_iocbq(phba, cmdiocbq);
208 /* make error code available to userspace */
209 job->reply->result = rc;
210 /* complete the job back to userspace */
212 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
217 * lpfc_bsg_send_mgmt_cmd - send a CT command from a bsg request
218 * @job: fc_bsg_job to handle
221 lpfc_bsg_send_mgmt_cmd(struct fc_bsg_job *job)
223 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
224 struct lpfc_hba *phba = vport->phba;
225 struct lpfc_rport_data *rdata = job->rport->dd_data;
226 struct lpfc_nodelist *ndlp = rdata->pnode;
227 struct ulp_bde64 *bpl = NULL;
229 struct lpfc_iocbq *cmdiocbq = NULL;
230 struct lpfc_iocbq *rspiocbq = NULL;
233 struct lpfc_dmabuf *bmp = NULL;
236 struct scatterlist *sgel = NULL;
239 struct bsg_job_data *dd_data;
243 /* in case no data is transferred */
244 job->reply->reply_payload_rcv_len = 0;
246 /* allocate our bsg tracking structure */
247 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
249 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
250 "2733 Failed allocation of dd_data\n");
255 if (!lpfc_nlp_get(ndlp)) {
260 bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
266 if (ndlp->nlp_flag & NLP_ELS_SND_MASK) {
271 cmdiocbq = lpfc_sli_get_iocbq(phba);
277 cmd = &cmdiocbq->iocb;
278 rspiocbq = lpfc_sli_get_iocbq(phba);
284 rsp = &rspiocbq->iocb;
285 bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys);
291 INIT_LIST_HEAD(&bmp->list);
292 bpl = (struct ulp_bde64 *) bmp->virt;
293 request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list,
294 job->request_payload.sg_cnt, DMA_TO_DEVICE);
295 for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) {
296 busaddr = sg_dma_address(sgel);
297 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
298 bpl->tus.f.bdeSize = sg_dma_len(sgel);
299 bpl->tus.w = cpu_to_le32(bpl->tus.w);
300 bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
301 bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
305 reply_nseg = pci_map_sg(phba->pcidev, job->reply_payload.sg_list,
306 job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
307 for_each_sg(job->reply_payload.sg_list, sgel, reply_nseg, numbde) {
308 busaddr = sg_dma_address(sgel);
309 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
310 bpl->tus.f.bdeSize = sg_dma_len(sgel);
311 bpl->tus.w = cpu_to_le32(bpl->tus.w);
312 bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
313 bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
317 cmd->un.genreq64.bdl.ulpIoTag32 = 0;
318 cmd->un.genreq64.bdl.addrHigh = putPaddrHigh(bmp->phys);
319 cmd->un.genreq64.bdl.addrLow = putPaddrLow(bmp->phys);
320 cmd->un.genreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
321 cmd->un.genreq64.bdl.bdeSize =
322 (request_nseg + reply_nseg) * sizeof(struct ulp_bde64);
323 cmd->ulpCommand = CMD_GEN_REQUEST64_CR;
324 cmd->un.genreq64.w5.hcsw.Fctl = (SI | LA);
325 cmd->un.genreq64.w5.hcsw.Dfctl = 0;
326 cmd->un.genreq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL;
327 cmd->un.genreq64.w5.hcsw.Type = FC_TYPE_CT;
328 cmd->ulpBdeCount = 1;
330 cmd->ulpClass = CLASS3;
331 cmd->ulpContext = ndlp->nlp_rpi;
332 cmd->ulpOwner = OWN_CHIP;
333 cmdiocbq->vport = phba->pport;
334 cmdiocbq->context3 = bmp;
335 cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
336 timeout = phba->fc_ratov * 2;
337 cmd->ulpTimeout = timeout;
339 cmdiocbq->iocb_cmpl = lpfc_bsg_send_mgmt_cmd_cmp;
340 cmdiocbq->context1 = dd_data;
341 cmdiocbq->context2 = rspiocbq;
342 dd_data->type = TYPE_IOCB;
343 dd_data->context_un.iocb.cmdiocbq = cmdiocbq;
344 dd_data->context_un.iocb.rspiocbq = rspiocbq;
345 dd_data->context_un.iocb.set_job = job;
346 dd_data->context_un.iocb.bmp = bmp;
347 dd_data->context_un.iocb.ndlp = ndlp;
349 if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
350 creg_val = readl(phba->HCregaddr);
351 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
352 writel(creg_val, phba->HCregaddr);
353 readl(phba->HCregaddr); /* flush */
356 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0);
358 if (rc == IOCB_SUCCESS)
359 return 0; /* done for now */
361 /* iocb failed so cleanup */
362 pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
363 job->request_payload.sg_cnt, DMA_TO_DEVICE);
364 pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list,
365 job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
367 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
370 lpfc_sli_release_iocbq(phba, rspiocbq);
372 lpfc_sli_release_iocbq(phba, cmdiocbq);
380 /* make error code available to userspace */
381 job->reply->result = rc;
387 * lpfc_bsg_rport_els_cmp - lpfc_bsg_rport_els's completion handler
388 * @phba: Pointer to HBA context object.
389 * @cmdiocbq: Pointer to command iocb.
390 * @rspiocbq: Pointer to response iocb.
392 * This function is the completion handler for iocbs issued using
393 * lpfc_bsg_rport_els_cmp function. This function is called by the
394 * ring event handler function without any lock held. This function
395 * can be called from both worker thread context and interrupt
396 * context. This function also can be called from other thread which
397 * cleans up the SLI layer objects.
398 * This function copies the contents of the response iocb to the
399 * response iocb memory object provided by the caller of
400 * lpfc_sli_issue_iocb_wait and then wakes up the thread which
401 * sleeps for the iocb completion.
404 lpfc_bsg_rport_els_cmp(struct lpfc_hba *phba,
405 struct lpfc_iocbq *cmdiocbq,
406 struct lpfc_iocbq *rspiocbq)
408 struct bsg_job_data *dd_data;
409 struct fc_bsg_job *job;
411 struct lpfc_nodelist *ndlp;
412 struct lpfc_dmabuf *pbuflist = NULL;
413 struct fc_bsg_ctels_reply *els_reply;
418 spin_lock_irqsave(&phba->ct_ev_lock, flags);
419 dd_data = cmdiocbq->context1;
420 /* normal completion and timeout crossed paths, already done */
422 spin_unlock_irqrestore(&phba->hbalock, flags);
426 cmdiocbq->iocb_flag |= LPFC_IO_WAKE;
427 if (cmdiocbq->context2 && rspiocbq)
428 memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb,
429 &rspiocbq->iocb, sizeof(IOCB_t));
431 job = dd_data->context_un.iocb.set_job;
432 cmdiocbq = dd_data->context_un.iocb.cmdiocbq;
433 rspiocbq = dd_data->context_un.iocb.rspiocbq;
434 rsp = &rspiocbq->iocb;
435 ndlp = dd_data->context_un.iocb.ndlp;
437 pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
438 job->request_payload.sg_cnt, DMA_TO_DEVICE);
439 pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list,
440 job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
442 if (job->reply->result == -EAGAIN)
444 else if (rsp->ulpStatus == IOSTAT_SUCCESS)
445 job->reply->reply_payload_rcv_len =
446 rsp->un.elsreq64.bdl.bdeSize;
447 else if (rsp->ulpStatus == IOSTAT_LS_RJT) {
448 job->reply->reply_payload_rcv_len =
449 sizeof(struct fc_bsg_ctels_reply);
450 /* LS_RJT data returned in word 4 */
451 rjt_data = (uint8_t *)&rsp->un.ulpWord[4];
452 els_reply = &job->reply->reply_data.ctels_reply;
453 els_reply->status = FC_CTELS_STATUS_REJECT;
454 els_reply->rjt_data.action = rjt_data[3];
455 els_reply->rjt_data.reason_code = rjt_data[2];
456 els_reply->rjt_data.reason_explanation = rjt_data[1];
457 els_reply->rjt_data.vendor_unique = rjt_data[0];
461 pbuflist = (struct lpfc_dmabuf *) cmdiocbq->context3;
462 lpfc_mbuf_free(phba, pbuflist->virt, pbuflist->phys);
463 lpfc_sli_release_iocbq(phba, rspiocbq);
464 lpfc_sli_release_iocbq(phba, cmdiocbq);
467 /* make error code available to userspace */
468 job->reply->result = rc;
470 /* complete the job back to userspace */
472 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
477 * lpfc_bsg_rport_els - send an ELS command from a bsg request
478 * @job: fc_bsg_job to handle
481 lpfc_bsg_rport_els(struct fc_bsg_job *job)
483 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
484 struct lpfc_hba *phba = vport->phba;
485 struct lpfc_rport_data *rdata = job->rport->dd_data;
486 struct lpfc_nodelist *ndlp = rdata->pnode;
490 struct lpfc_iocbq *rspiocbq;
491 struct lpfc_iocbq *cmdiocbq;
494 struct lpfc_dmabuf *pcmd;
495 struct lpfc_dmabuf *prsp;
496 struct lpfc_dmabuf *pbuflist = NULL;
497 struct ulp_bde64 *bpl;
500 struct scatterlist *sgel = NULL;
503 struct bsg_job_data *dd_data;
507 /* in case no data is transferred */
508 job->reply->reply_payload_rcv_len = 0;
510 /* allocate our bsg tracking structure */
511 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
513 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
514 "2735 Failed allocation of dd_data\n");
519 if (!lpfc_nlp_get(ndlp)) {
524 elscmd = job->request->rqst_data.r_els.els_code;
525 cmdsize = job->request_payload.payload_len;
526 rspsize = job->reply_payload.payload_len;
527 rspiocbq = lpfc_sli_get_iocbq(phba);
534 rsp = &rspiocbq->iocb;
537 cmdiocbq = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp,
538 ndlp->nlp_DID, elscmd);
544 /* prep els iocb set context1 to the ndlp, context2 to the command
545 * dmabuf, context3 holds the data dmabuf
547 pcmd = (struct lpfc_dmabuf *) cmdiocbq->context2;
548 prsp = (struct lpfc_dmabuf *) pcmd->list.next;
549 lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
551 lpfc_mbuf_free(phba, prsp->virt, prsp->phys);
553 cmdiocbq->context2 = NULL;
555 pbuflist = (struct lpfc_dmabuf *) cmdiocbq->context3;
556 bpl = (struct ulp_bde64 *) pbuflist->virt;
558 request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list,
559 job->request_payload.sg_cnt, DMA_TO_DEVICE);
560 for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) {
561 busaddr = sg_dma_address(sgel);
562 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
563 bpl->tus.f.bdeSize = sg_dma_len(sgel);
564 bpl->tus.w = cpu_to_le32(bpl->tus.w);
565 bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
566 bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
570 reply_nseg = pci_map_sg(phba->pcidev, job->reply_payload.sg_list,
571 job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
572 for_each_sg(job->reply_payload.sg_list, sgel, reply_nseg, numbde) {
573 busaddr = sg_dma_address(sgel);
574 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
575 bpl->tus.f.bdeSize = sg_dma_len(sgel);
576 bpl->tus.w = cpu_to_le32(bpl->tus.w);
577 bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
578 bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
581 cmdiocbq->iocb.un.elsreq64.bdl.bdeSize =
582 (request_nseg + reply_nseg) * sizeof(struct ulp_bde64);
583 cmdiocbq->iocb.ulpContext = rpi;
584 cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
585 cmdiocbq->context1 = NULL;
586 cmdiocbq->context2 = NULL;
588 cmdiocbq->iocb_cmpl = lpfc_bsg_rport_els_cmp;
589 cmdiocbq->context1 = dd_data;
590 cmdiocbq->context2 = rspiocbq;
591 dd_data->type = TYPE_IOCB;
592 dd_data->context_un.iocb.cmdiocbq = cmdiocbq;
593 dd_data->context_un.iocb.rspiocbq = rspiocbq;
594 dd_data->context_un.iocb.set_job = job;
595 dd_data->context_un.iocb.bmp = NULL;;
596 dd_data->context_un.iocb.ndlp = ndlp;
598 if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
599 creg_val = readl(phba->HCregaddr);
600 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
601 writel(creg_val, phba->HCregaddr);
602 readl(phba->HCregaddr); /* flush */
604 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0);
606 if (rc == IOCB_SUCCESS)
607 return 0; /* done for now */
609 pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
610 job->request_payload.sg_cnt, DMA_TO_DEVICE);
611 pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list,
612 job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
614 lpfc_mbuf_free(phba, pbuflist->virt, pbuflist->phys);
616 lpfc_sli_release_iocbq(phba, cmdiocbq);
619 lpfc_sli_release_iocbq(phba, rspiocbq);
625 /* make error code available to userspace */
626 job->reply->result = rc;
632 * lpfc_bsg_event_free - frees an allocated event structure
633 * @kref: Pointer to a kref.
635 * Called from kref_put. Back cast the kref into an event structure address.
636 * Free any events to get, delete associated nodes, free any events to see,
637 * free any data then free the event itself.
640 lpfc_bsg_event_free(struct kref *kref)
642 struct lpfc_bsg_event *evt = container_of(kref, struct lpfc_bsg_event,
644 struct event_data *ed;
646 list_del(&evt->node);
648 while (!list_empty(&evt->events_to_get)) {
649 ed = list_entry(evt->events_to_get.next, typeof(*ed), node);
655 while (!list_empty(&evt->events_to_see)) {
656 ed = list_entry(evt->events_to_see.next, typeof(*ed), node);
666 * lpfc_bsg_event_ref - increments the kref for an event
667 * @evt: Pointer to an event structure.
670 lpfc_bsg_event_ref(struct lpfc_bsg_event *evt)
672 kref_get(&evt->kref);
676 * lpfc_bsg_event_unref - Uses kref_put to free an event structure
677 * @evt: Pointer to an event structure.
680 lpfc_bsg_event_unref(struct lpfc_bsg_event *evt)
682 kref_put(&evt->kref, lpfc_bsg_event_free);
686 * lpfc_bsg_event_new - allocate and initialize a event structure
687 * @ev_mask: Mask of events.
688 * @ev_reg_id: Event reg id.
689 * @ev_req_id: Event request id.
691 static struct lpfc_bsg_event *
692 lpfc_bsg_event_new(uint32_t ev_mask, int ev_reg_id, uint32_t ev_req_id)
694 struct lpfc_bsg_event *evt = kzalloc(sizeof(*evt), GFP_KERNEL);
699 INIT_LIST_HEAD(&evt->events_to_get);
700 INIT_LIST_HEAD(&evt->events_to_see);
701 evt->type_mask = ev_mask;
702 evt->req_id = ev_req_id;
703 evt->reg_id = ev_reg_id;
704 evt->wait_time_stamp = jiffies;
705 init_waitqueue_head(&evt->wq);
706 kref_init(&evt->kref);
711 * diag_cmd_data_free - Frees an lpfc dma buffer extension
712 * @phba: Pointer to HBA context object.
713 * @mlist: Pointer to an lpfc dma buffer extension.
716 diag_cmd_data_free(struct lpfc_hba *phba, struct lpfc_dmabufext *mlist)
718 struct lpfc_dmabufext *mlast;
719 struct pci_dev *pcidev;
720 struct list_head head, *curr, *next;
722 if ((!mlist) || (!lpfc_is_link_up(phba) &&
723 (phba->link_flag & LS_LOOPBACK_MODE))) {
727 pcidev = phba->pcidev;
728 list_add_tail(&head, &mlist->dma.list);
730 list_for_each_safe(curr, next, &head) {
731 mlast = list_entry(curr, struct lpfc_dmabufext , dma.list);
733 dma_free_coherent(&pcidev->dev,
743 * lpfc_bsg_ct_unsol_event - process an unsolicited CT command
748 * This function is called when an unsolicited CT command is received. It
749 * forwards the event to any processes registered to receive CT events.
752 lpfc_bsg_ct_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
753 struct lpfc_iocbq *piocbq)
755 uint32_t evt_req_id = 0;
758 struct lpfc_dmabuf *dmabuf = NULL;
759 struct lpfc_bsg_event *evt;
760 struct event_data *evt_dat = NULL;
761 struct lpfc_iocbq *iocbq;
763 struct list_head head;
764 struct ulp_bde64 *bde;
767 struct lpfc_dmabuf *bdeBuf1 = piocbq->context2;
768 struct lpfc_dmabuf *bdeBuf2 = piocbq->context3;
769 struct lpfc_hbq_entry *hbqe;
770 struct lpfc_sli_ct_request *ct_req;
771 struct fc_bsg_job *job = NULL;
775 INIT_LIST_HEAD(&head);
776 list_add_tail(&head, &piocbq->list);
778 if (piocbq->iocb.ulpBdeCount == 0 ||
779 piocbq->iocb.un.cont64[0].tus.f.bdeSize == 0)
780 goto error_ct_unsol_exit;
782 if (phba->link_state == LPFC_HBA_ERROR ||
783 (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE)))
784 goto error_ct_unsol_exit;
786 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)
789 dma_addr = getPaddr(piocbq->iocb.un.cont64[0].addrHigh,
790 piocbq->iocb.un.cont64[0].addrLow);
791 dmabuf = lpfc_sli_ringpostbuf_get(phba, pring, dma_addr);
794 goto error_ct_unsol_exit;
795 ct_req = (struct lpfc_sli_ct_request *)dmabuf->virt;
796 evt_req_id = ct_req->FsType;
797 cmd = ct_req->CommandResponse.bits.CmdRsp;
798 len = ct_req->CommandResponse.bits.Size;
799 if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED))
800 lpfc_sli_ringpostbuf_put(phba, pring, dmabuf);
802 spin_lock_irqsave(&phba->ct_ev_lock, flags);
803 list_for_each_entry(evt, &phba->ct_ev_waiters, node) {
804 if (!(evt->type_mask & FC_REG_CT_EVENT) ||
805 evt->req_id != evt_req_id)
808 lpfc_bsg_event_ref(evt);
809 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
810 evt_dat = kzalloc(sizeof(*evt_dat), GFP_KERNEL);
811 if (evt_dat == NULL) {
812 spin_lock_irqsave(&phba->ct_ev_lock, flags);
813 lpfc_bsg_event_unref(evt);
814 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
815 "2614 Memory allocation failed for "
820 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
821 /* take accumulated byte count from the last iocbq */
822 iocbq = list_entry(head.prev, typeof(*iocbq), list);
823 evt_dat->len = iocbq->iocb.unsli3.rcvsli3.acc_len;
825 list_for_each_entry(iocbq, &head, list) {
826 for (i = 0; i < iocbq->iocb.ulpBdeCount; i++)
828 iocbq->iocb.un.cont64[i].tus.f.bdeSize;
832 evt_dat->data = kzalloc(evt_dat->len, GFP_KERNEL);
833 if (evt_dat->data == NULL) {
834 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
835 "2615 Memory allocation failed for "
836 "CT event data, size %d\n",
839 spin_lock_irqsave(&phba->ct_ev_lock, flags);
840 lpfc_bsg_event_unref(evt);
841 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
842 goto error_ct_unsol_exit;
845 list_for_each_entry(iocbq, &head, list) {
847 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
848 bdeBuf1 = iocbq->context2;
849 bdeBuf2 = iocbq->context3;
851 for (i = 0; i < iocbq->iocb.ulpBdeCount; i++) {
852 if (phba->sli3_options &
853 LPFC_SLI3_HBQ_ENABLED) {
855 hbqe = (struct lpfc_hbq_entry *)
856 &iocbq->iocb.un.ulpWord[0];
857 size = hbqe->bde.tus.f.bdeSize;
860 hbqe = (struct lpfc_hbq_entry *)
863 size = hbqe->bde.tus.f.bdeSize;
866 if ((offset + size) > evt_dat->len)
867 size = evt_dat->len - offset;
869 size = iocbq->iocb.un.cont64[i].
871 bde = &iocbq->iocb.un.cont64[i];
872 dma_addr = getPaddr(bde->addrHigh,
874 dmabuf = lpfc_sli_ringpostbuf_get(phba,
878 lpfc_printf_log(phba, KERN_ERR,
879 LOG_LIBDFC, "2616 No dmabuf "
880 "found for iocbq 0x%p\n",
882 kfree(evt_dat->data);
884 spin_lock_irqsave(&phba->ct_ev_lock,
886 lpfc_bsg_event_unref(evt);
887 spin_unlock_irqrestore(
888 &phba->ct_ev_lock, flags);
889 goto error_ct_unsol_exit;
891 memcpy((char *)(evt_dat->data) + offset,
894 if (evt_req_id != SLI_CT_ELX_LOOPBACK &&
895 !(phba->sli3_options &
896 LPFC_SLI3_HBQ_ENABLED)) {
897 lpfc_sli_ringpostbuf_put(phba, pring,
901 case ELX_LOOPBACK_DATA:
902 diag_cmd_data_free(phba,
903 (struct lpfc_dmabufext *)
906 case ELX_LOOPBACK_XRI_SETUP:
907 if ((phba->sli_rev ==
909 (phba->sli3_options &
910 LPFC_SLI3_HBQ_ENABLED
912 lpfc_in_buf_free(phba,
915 lpfc_post_buffer(phba,
921 if (!(phba->sli3_options &
922 LPFC_SLI3_HBQ_ENABLED))
923 lpfc_post_buffer(phba,
932 spin_lock_irqsave(&phba->ct_ev_lock, flags);
933 if (phba->sli_rev == LPFC_SLI_REV4) {
934 evt_dat->immed_dat = phba->ctx_idx;
935 phba->ctx_idx = (phba->ctx_idx + 1) % 64;
936 phba->ct_ctx[evt_dat->immed_dat].oxid =
937 piocbq->iocb.ulpContext;
938 phba->ct_ctx[evt_dat->immed_dat].SID =
939 piocbq->iocb.un.rcvels.remoteID;
941 evt_dat->immed_dat = piocbq->iocb.ulpContext;
943 evt_dat->type = FC_REG_CT_EVENT;
944 list_add(&evt_dat->node, &evt->events_to_see);
945 if (evt_req_id == SLI_CT_ELX_LOOPBACK) {
946 wake_up_interruptible(&evt->wq);
947 lpfc_bsg_event_unref(evt);
951 list_move(evt->events_to_see.prev, &evt->events_to_get);
952 lpfc_bsg_event_unref(evt);
957 job->reply->reply_payload_rcv_len = size;
958 /* make error code available to userspace */
959 job->reply->result = 0;
961 /* complete the job back to userspace */
962 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
964 spin_lock_irqsave(&phba->ct_ev_lock, flags);
967 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
970 if (!list_empty(&head))
972 if (evt_req_id == SLI_CT_ELX_LOOPBACK)
978 * lpfc_bsg_hba_set_event - process a SET_EVENT bsg vendor command
979 * @job: SET_EVENT fc_bsg_job
982 lpfc_bsg_hba_set_event(struct fc_bsg_job *job)
984 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
985 struct lpfc_hba *phba = vport->phba;
986 struct set_ct_event *event_req;
987 struct lpfc_bsg_event *evt;
989 struct bsg_job_data *dd_data = NULL;
993 if (job->request_len <
994 sizeof(struct fc_bsg_request) + sizeof(struct set_ct_event)) {
995 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
996 "2612 Received SET_CT_EVENT below minimum "
1002 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
1003 if (dd_data == NULL) {
1004 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1005 "2734 Failed allocation of dd_data\n");
1010 event_req = (struct set_ct_event *)
1011 job->request->rqst_data.h_vendor.vendor_cmd;
1012 ev_mask = ((uint32_t)(unsigned long)event_req->type_mask &
1014 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1015 list_for_each_entry(evt, &phba->ct_ev_waiters, node) {
1016 if (evt->reg_id == event_req->ev_reg_id) {
1017 lpfc_bsg_event_ref(evt);
1018 evt->wait_time_stamp = jiffies;
1022 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1024 if (&evt->node == &phba->ct_ev_waiters) {
1025 /* no event waiting struct yet - first call */
1026 evt = lpfc_bsg_event_new(ev_mask, event_req->ev_reg_id,
1027 event_req->ev_req_id);
1029 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1030 "2617 Failed allocation of event "
1036 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1037 list_add(&evt->node, &phba->ct_ev_waiters);
1038 lpfc_bsg_event_ref(evt);
1039 evt->wait_time_stamp = jiffies;
1040 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1043 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1045 dd_data->type = TYPE_EVT;
1046 dd_data->context_un.evt = evt;
1047 evt->set_job = job; /* for unsolicited command */
1048 job->dd_data = dd_data; /* for fc transport timeout callback*/
1049 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1050 return 0; /* call job done later */
1053 if (dd_data != NULL)
1056 job->dd_data = NULL;
1061 * lpfc_bsg_hba_get_event - process a GET_EVENT bsg vendor command
1062 * @job: GET_EVENT fc_bsg_job
1065 lpfc_bsg_hba_get_event(struct fc_bsg_job *job)
1067 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
1068 struct lpfc_hba *phba = vport->phba;
1069 struct get_ct_event *event_req;
1070 struct get_ct_event_reply *event_reply;
1071 struct lpfc_bsg_event *evt;
1072 struct event_data *evt_dat = NULL;
1073 unsigned long flags;
1076 if (job->request_len <
1077 sizeof(struct fc_bsg_request) + sizeof(struct get_ct_event)) {
1078 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1079 "2613 Received GET_CT_EVENT request below "
1085 event_req = (struct get_ct_event *)
1086 job->request->rqst_data.h_vendor.vendor_cmd;
1088 event_reply = (struct get_ct_event_reply *)
1089 job->reply->reply_data.vendor_reply.vendor_rsp;
1090 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1091 list_for_each_entry(evt, &phba->ct_ev_waiters, node) {
1092 if (evt->reg_id == event_req->ev_reg_id) {
1093 if (list_empty(&evt->events_to_get))
1095 lpfc_bsg_event_ref(evt);
1096 evt->wait_time_stamp = jiffies;
1097 evt_dat = list_entry(evt->events_to_get.prev,
1098 struct event_data, node);
1099 list_del(&evt_dat->node);
1103 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1105 /* The app may continue to ask for event data until it gets
1106 * an error indicating that there isn't anymore
1108 if (evt_dat == NULL) {
1109 job->reply->reply_payload_rcv_len = 0;
1114 if (evt_dat->len > job->request_payload.payload_len) {
1115 evt_dat->len = job->request_payload.payload_len;
1116 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1117 "2618 Truncated event data at %d "
1119 job->request_payload.payload_len);
1122 event_reply->type = evt_dat->type;
1123 event_reply->immed_data = evt_dat->immed_dat;
1124 if (evt_dat->len > 0)
1125 job->reply->reply_payload_rcv_len =
1126 sg_copy_from_buffer(job->request_payload.sg_list,
1127 job->request_payload.sg_cnt,
1128 evt_dat->data, evt_dat->len);
1130 job->reply->reply_payload_rcv_len = 0;
1133 kfree(evt_dat->data);
1137 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1138 lpfc_bsg_event_unref(evt);
1139 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1140 job->dd_data = NULL;
1141 job->reply->result = 0;
1146 job->dd_data = NULL;
1147 job->reply->result = rc;
1152 * lpfc_issue_ct_rsp_cmp - lpfc_issue_ct_rsp's completion handler
1153 * @phba: Pointer to HBA context object.
1154 * @cmdiocbq: Pointer to command iocb.
1155 * @rspiocbq: Pointer to response iocb.
1157 * This function is the completion handler for iocbs issued using
1158 * lpfc_issue_ct_rsp_cmp function. This function is called by the
1159 * ring event handler function without any lock held. This function
1160 * can be called from both worker thread context and interrupt
1161 * context. This function also can be called from other thread which
1162 * cleans up the SLI layer objects.
1163 * This function copy the contents of the response iocb to the
1164 * response iocb memory object provided by the caller of
1165 * lpfc_sli_issue_iocb_wait and then wakes up the thread which
1166 * sleeps for the iocb completion.
1169 lpfc_issue_ct_rsp_cmp(struct lpfc_hba *phba,
1170 struct lpfc_iocbq *cmdiocbq,
1171 struct lpfc_iocbq *rspiocbq)
1173 struct bsg_job_data *dd_data;
1174 struct fc_bsg_job *job;
1176 struct lpfc_dmabuf *bmp;
1177 struct lpfc_nodelist *ndlp;
1178 unsigned long flags;
1181 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1182 dd_data = cmdiocbq->context1;
1183 /* normal completion and timeout crossed paths, already done */
1185 spin_unlock_irqrestore(&phba->hbalock, flags);
1189 job = dd_data->context_un.iocb.set_job;
1190 bmp = dd_data->context_un.iocb.bmp;
1191 rsp = &rspiocbq->iocb;
1192 ndlp = dd_data->context_un.iocb.ndlp;
1194 pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
1195 job->request_payload.sg_cnt, DMA_TO_DEVICE);
1197 if (rsp->ulpStatus) {
1198 if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
1199 switch (rsp->un.ulpWord[4] & 0xff) {
1200 case IOERR_SEQUENCE_TIMEOUT:
1203 case IOERR_INVALID_RPI:
1213 job->reply->reply_payload_rcv_len =
1214 rsp->un.genreq64.bdl.bdeSize;
1216 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
1217 lpfc_sli_release_iocbq(phba, cmdiocbq);
1221 /* make error code available to userspace */
1222 job->reply->result = rc;
1223 job->dd_data = NULL;
1224 /* complete the job back to userspace */
1226 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1231 * lpfc_issue_ct_rsp - issue a ct response
1232 * @phba: Pointer to HBA context object.
1233 * @job: Pointer to the job object.
1234 * @tag: tag index value into the ports context exchange array.
1235 * @bmp: Pointer to a dma buffer descriptor.
1236 * @num_entry: Number of enties in the bde.
1239 lpfc_issue_ct_rsp(struct lpfc_hba *phba, struct fc_bsg_job *job, uint32_t tag,
1240 struct lpfc_dmabuf *bmp, int num_entry)
1243 struct lpfc_iocbq *ctiocb = NULL;
1245 struct lpfc_nodelist *ndlp = NULL;
1246 struct bsg_job_data *dd_data;
1249 /* allocate our bsg tracking structure */
1250 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
1252 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1253 "2736 Failed allocation of dd_data\n");
1258 /* Allocate buffer for command iocb */
1259 ctiocb = lpfc_sli_get_iocbq(phba);
1265 icmd = &ctiocb->iocb;
1266 icmd->un.xseq64.bdl.ulpIoTag32 = 0;
1267 icmd->un.xseq64.bdl.addrHigh = putPaddrHigh(bmp->phys);
1268 icmd->un.xseq64.bdl.addrLow = putPaddrLow(bmp->phys);
1269 icmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
1270 icmd->un.xseq64.bdl.bdeSize = (num_entry * sizeof(struct ulp_bde64));
1271 icmd->un.xseq64.w5.hcsw.Fctl = (LS | LA);
1272 icmd->un.xseq64.w5.hcsw.Dfctl = 0;
1273 icmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_SOL_CTL;
1274 icmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT;
1276 /* Fill in rest of iocb */
1277 icmd->ulpCommand = CMD_XMIT_SEQUENCE64_CX;
1278 icmd->ulpBdeCount = 1;
1280 icmd->ulpClass = CLASS3;
1281 if (phba->sli_rev == LPFC_SLI_REV4) {
1282 /* Do not issue unsol response if oxid not marked as valid */
1283 if (!(phba->ct_ctx[tag].flags & UNSOL_VALID)) {
1285 goto issue_ct_rsp_exit;
1287 icmd->ulpContext = phba->ct_ctx[tag].oxid;
1288 ndlp = lpfc_findnode_did(phba->pport, phba->ct_ctx[tag].SID);
1290 lpfc_printf_log(phba, KERN_WARNING, LOG_ELS,
1291 "2721 ndlp null for oxid %x SID %x\n",
1293 phba->ct_ctx[tag].SID);
1295 goto issue_ct_rsp_exit;
1297 icmd->un.ulpWord[3] = ndlp->nlp_rpi;
1298 /* The exchange is done, mark the entry as invalid */
1299 phba->ct_ctx[tag].flags &= ~UNSOL_VALID;
1301 icmd->ulpContext = (ushort) tag;
1303 icmd->ulpTimeout = phba->fc_ratov * 2;
1305 /* Xmit CT response on exchange <xid> */
1306 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1307 "2722 Xmit CT response on exchange x%x Data: x%x x%x\n",
1308 icmd->ulpContext, icmd->ulpIoTag, phba->link_state);
1310 ctiocb->iocb_cmpl = NULL;
1311 ctiocb->iocb_flag |= LPFC_IO_LIBDFC;
1312 ctiocb->vport = phba->pport;
1313 ctiocb->context3 = bmp;
1315 ctiocb->iocb_cmpl = lpfc_issue_ct_rsp_cmp;
1316 ctiocb->context1 = dd_data;
1317 ctiocb->context2 = NULL;
1318 dd_data->type = TYPE_IOCB;
1319 dd_data->context_un.iocb.cmdiocbq = ctiocb;
1320 dd_data->context_un.iocb.rspiocbq = NULL;
1321 dd_data->context_un.iocb.set_job = job;
1322 dd_data->context_un.iocb.bmp = bmp;
1323 dd_data->context_un.iocb.ndlp = ndlp;
1325 if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
1326 creg_val = readl(phba->HCregaddr);
1327 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
1328 writel(creg_val, phba->HCregaddr);
1329 readl(phba->HCregaddr); /* flush */
1332 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, ctiocb, 0);
1334 if (rc == IOCB_SUCCESS)
1335 return 0; /* done for now */
1338 lpfc_sli_release_iocbq(phba, ctiocb);
1346 * lpfc_bsg_send_mgmt_rsp - process a SEND_MGMT_RESP bsg vendor command
1347 * @job: SEND_MGMT_RESP fc_bsg_job
1350 lpfc_bsg_send_mgmt_rsp(struct fc_bsg_job *job)
1352 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
1353 struct lpfc_hba *phba = vport->phba;
1354 struct send_mgmt_resp *mgmt_resp = (struct send_mgmt_resp *)
1355 job->request->rqst_data.h_vendor.vendor_cmd;
1356 struct ulp_bde64 *bpl;
1357 struct lpfc_dmabuf *bmp = NULL;
1358 struct scatterlist *sgel = NULL;
1362 uint32_t tag = mgmt_resp->tag;
1363 unsigned long reqbfrcnt =
1364 (unsigned long)job->request_payload.payload_len;
1367 /* in case no data is transferred */
1368 job->reply->reply_payload_rcv_len = 0;
1370 if (!reqbfrcnt || (reqbfrcnt > (80 * BUF_SZ_4K))) {
1372 goto send_mgmt_rsp_exit;
1375 bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
1378 goto send_mgmt_rsp_exit;
1381 bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys);
1384 goto send_mgmt_rsp_free_bmp;
1387 INIT_LIST_HEAD(&bmp->list);
1388 bpl = (struct ulp_bde64 *) bmp->virt;
1389 request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list,
1390 job->request_payload.sg_cnt, DMA_TO_DEVICE);
1391 for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) {
1392 busaddr = sg_dma_address(sgel);
1393 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
1394 bpl->tus.f.bdeSize = sg_dma_len(sgel);
1395 bpl->tus.w = cpu_to_le32(bpl->tus.w);
1396 bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
1397 bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
1401 rc = lpfc_issue_ct_rsp(phba, job, tag, bmp, request_nseg);
1403 if (rc == IOCB_SUCCESS)
1404 return 0; /* done for now */
1406 /* TBD need to handle a timeout */
1407 pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
1408 job->request_payload.sg_cnt, DMA_TO_DEVICE);
1410 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
1412 send_mgmt_rsp_free_bmp:
1415 /* make error code available to userspace */
1416 job->reply->result = rc;
1417 job->dd_data = NULL;
1422 * lpfc_bsg_diag_mode - process a LPFC_BSG_VENDOR_DIAG_MODE bsg vendor command
1423 * @job: LPFC_BSG_VENDOR_DIAG_MODE
1425 * This function is responsible for placing a port into diagnostic loopback
1426 * mode in order to perform a diagnostic loopback test.
1427 * All new scsi requests are blocked, a small delay is used to allow the
1428 * scsi requests to complete then the link is brought down. If the link is
1429 * is placed in loopback mode then scsi requests are again allowed
1430 * so the scsi mid-layer doesn't give up on the port.
1431 * All of this is done in-line.
1434 lpfc_bsg_diag_mode(struct fc_bsg_job *job)
1436 struct Scsi_Host *shost = job->shost;
1437 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
1438 struct lpfc_hba *phba = vport->phba;
1439 struct diag_mode_set *loopback_mode;
1440 struct lpfc_sli *psli = &phba->sli;
1441 struct lpfc_sli_ring *pring = &psli->ring[LPFC_FCP_RING];
1442 uint32_t link_flags;
1444 struct lpfc_vport **vports;
1445 LPFC_MBOXQ_t *pmboxq;
1450 /* no data to return just the return code */
1451 job->reply->reply_payload_rcv_len = 0;
1453 if (job->request_len <
1454 sizeof(struct fc_bsg_request) + sizeof(struct diag_mode_set)) {
1455 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1456 "2738 Received DIAG MODE request below minimum "
1462 loopback_mode = (struct diag_mode_set *)
1463 job->request->rqst_data.h_vendor.vendor_cmd;
1464 link_flags = loopback_mode->type;
1465 timeout = loopback_mode->timeout;
1467 if ((phba->link_state == LPFC_HBA_ERROR) ||
1468 (psli->sli_flag & LPFC_BLOCK_MGMT_IO) ||
1469 (!(psli->sli_flag & LPFC_SLI_ACTIVE))) {
1474 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1480 vports = lpfc_create_vport_work_array(phba);
1482 for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
1483 shost = lpfc_shost_from_vport(vports[i]);
1484 scsi_block_requests(shost);
1487 lpfc_destroy_vport_work_array(phba, vports);
1489 shost = lpfc_shost_from_vport(phba->pport);
1490 scsi_block_requests(shost);
1493 while (pring->txcmplq_cnt) {
1494 if (i++ > 500) /* wait up to 5 seconds */
1500 memset((void *)pmboxq, 0, sizeof(LPFC_MBOXQ_t));
1501 pmboxq->u.mb.mbxCommand = MBX_DOWN_LINK;
1502 pmboxq->u.mb.mbxOwner = OWN_HOST;
1504 mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO);
1506 if ((mbxstatus == MBX_SUCCESS) && (pmboxq->u.mb.mbxStatus == 0)) {
1507 /* wait for link down before proceeding */
1509 while (phba->link_state != LPFC_LINK_DOWN) {
1510 if (i++ > timeout) {
1512 goto loopback_mode_exit;
1518 memset((void *)pmboxq, 0, sizeof(LPFC_MBOXQ_t));
1519 if (link_flags == INTERNAL_LOOP_BACK)
1520 pmboxq->u.mb.un.varInitLnk.link_flags = FLAGS_LOCAL_LB;
1522 pmboxq->u.mb.un.varInitLnk.link_flags =
1523 FLAGS_TOPOLOGY_MODE_LOOP;
1525 pmboxq->u.mb.mbxCommand = MBX_INIT_LINK;
1526 pmboxq->u.mb.mbxOwner = OWN_HOST;
1528 mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq,
1531 if ((mbxstatus != MBX_SUCCESS) || (pmboxq->u.mb.mbxStatus))
1534 phba->link_flag |= LS_LOOPBACK_MODE;
1535 /* wait for the link attention interrupt */
1539 while (phba->link_state != LPFC_HBA_READY) {
1540 if (i++ > timeout) {
1553 vports = lpfc_create_vport_work_array(phba);
1555 for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
1556 shost = lpfc_shost_from_vport(vports[i]);
1557 scsi_unblock_requests(shost);
1559 lpfc_destroy_vport_work_array(phba, vports);
1561 shost = lpfc_shost_from_vport(phba->pport);
1562 scsi_unblock_requests(shost);
1566 * Let SLI layer release mboxq if mbox command completed after timeout.
1568 if (mbxstatus != MBX_TIMEOUT)
1569 mempool_free(pmboxq, phba->mbox_mem_pool);
1572 /* make error code available to userspace */
1573 job->reply->result = rc;
1574 /* complete the job back to userspace if no error */
1581 * lpfcdiag_loop_self_reg - obtains a remote port login id
1582 * @phba: Pointer to HBA context object
1583 * @rpi: Pointer to a remote port login id
1585 * This function obtains a remote port login id so the diag loopback test
1586 * can send and receive its own unsolicited CT command.
1588 static int lpfcdiag_loop_self_reg(struct lpfc_hba *phba, uint16_t * rpi)
1591 struct lpfc_dmabuf *dmabuff;
1594 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1598 status = lpfc_reg_rpi(phba, 0, phba->pport->fc_myDID,
1599 (uint8_t *)&phba->pport->fc_sparam, mbox, 0);
1601 mempool_free(mbox, phba->mbox_mem_pool);
1605 dmabuff = (struct lpfc_dmabuf *) mbox->context1;
1606 mbox->context1 = NULL;
1607 status = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
1609 if ((status != MBX_SUCCESS) || (mbox->u.mb.mbxStatus)) {
1610 lpfc_mbuf_free(phba, dmabuff->virt, dmabuff->phys);
1612 if (status != MBX_TIMEOUT)
1613 mempool_free(mbox, phba->mbox_mem_pool);
1617 *rpi = mbox->u.mb.un.varWords[0];
1619 lpfc_mbuf_free(phba, dmabuff->virt, dmabuff->phys);
1621 mempool_free(mbox, phba->mbox_mem_pool);
1626 * lpfcdiag_loop_self_unreg - unregs from the rpi
1627 * @phba: Pointer to HBA context object
1628 * @rpi: Remote port login id
1630 * This function unregisters the rpi obtained in lpfcdiag_loop_self_reg
1632 static int lpfcdiag_loop_self_unreg(struct lpfc_hba *phba, uint16_t rpi)
1637 /* Allocate mboxq structure */
1638 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1642 lpfc_unreg_login(phba, 0, rpi, mbox);
1643 status = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
1645 if ((status != MBX_SUCCESS) || (mbox->u.mb.mbxStatus)) {
1646 if (status != MBX_TIMEOUT)
1647 mempool_free(mbox, phba->mbox_mem_pool);
1651 mempool_free(mbox, phba->mbox_mem_pool);
1656 * lpfcdiag_loop_get_xri - obtains the transmit and receive ids
1657 * @phba: Pointer to HBA context object
1658 * @rpi: Remote port login id
1659 * @txxri: Pointer to transmit exchange id
1660 * @rxxri: Pointer to response exchabge id
1662 * This function obtains the transmit and receive ids required to send
1663 * an unsolicited ct command with a payload. A special lpfc FsType and CmdRsp
1664 * flags are used to the unsolicted response handler is able to process
1665 * the ct command sent on the same port.
1667 static int lpfcdiag_loop_get_xri(struct lpfc_hba *phba, uint16_t rpi,
1668 uint16_t *txxri, uint16_t * rxxri)
1670 struct lpfc_bsg_event *evt;
1671 struct lpfc_iocbq *cmdiocbq, *rspiocbq;
1673 struct lpfc_dmabuf *dmabuf;
1674 struct ulp_bde64 *bpl = NULL;
1675 struct lpfc_sli_ct_request *ctreq = NULL;
1677 unsigned long flags;
1681 evt = lpfc_bsg_event_new(FC_REG_CT_EVENT, current->pid,
1682 SLI_CT_ELX_LOOPBACK);
1686 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1687 list_add(&evt->node, &phba->ct_ev_waiters);
1688 lpfc_bsg_event_ref(evt);
1689 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1691 cmdiocbq = lpfc_sli_get_iocbq(phba);
1692 rspiocbq = lpfc_sli_get_iocbq(phba);
1694 dmabuf = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
1696 dmabuf->virt = lpfc_mbuf_alloc(phba, 0, &dmabuf->phys);
1697 INIT_LIST_HEAD(&dmabuf->list);
1698 bpl = (struct ulp_bde64 *) dmabuf->virt;
1699 memset(bpl, 0, sizeof(*bpl));
1700 ctreq = (struct lpfc_sli_ct_request *)(bpl + 1);
1702 le32_to_cpu(putPaddrHigh(dmabuf->phys + sizeof(*bpl)));
1704 le32_to_cpu(putPaddrLow(dmabuf->phys + sizeof(*bpl)));
1705 bpl->tus.f.bdeFlags = 0;
1706 bpl->tus.f.bdeSize = ELX_LOOPBACK_HEADER_SZ;
1707 bpl->tus.w = le32_to_cpu(bpl->tus.w);
1710 if (cmdiocbq == NULL || rspiocbq == NULL ||
1711 dmabuf == NULL || bpl == NULL || ctreq == NULL) {
1713 goto err_get_xri_exit;
1716 cmd = &cmdiocbq->iocb;
1717 rsp = &rspiocbq->iocb;
1719 memset(ctreq, 0, ELX_LOOPBACK_HEADER_SZ);
1721 ctreq->RevisionId.bits.Revision = SLI_CT_REVISION;
1722 ctreq->RevisionId.bits.InId = 0;
1723 ctreq->FsType = SLI_CT_ELX_LOOPBACK;
1724 ctreq->FsSubType = 0;
1725 ctreq->CommandResponse.bits.CmdRsp = ELX_LOOPBACK_XRI_SETUP;
1726 ctreq->CommandResponse.bits.Size = 0;
1729 cmd->un.xseq64.bdl.addrHigh = putPaddrHigh(dmabuf->phys);
1730 cmd->un.xseq64.bdl.addrLow = putPaddrLow(dmabuf->phys);
1731 cmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
1732 cmd->un.xseq64.bdl.bdeSize = sizeof(*bpl);
1734 cmd->un.xseq64.w5.hcsw.Fctl = LA;
1735 cmd->un.xseq64.w5.hcsw.Dfctl = 0;
1736 cmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL;
1737 cmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT;
1739 cmd->ulpCommand = CMD_XMIT_SEQUENCE64_CR;
1740 cmd->ulpBdeCount = 1;
1742 cmd->ulpClass = CLASS3;
1743 cmd->ulpContext = rpi;
1745 cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
1746 cmdiocbq->vport = phba->pport;
1748 ret_val = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq,
1750 (phba->fc_ratov * 2)
1751 + LPFC_DRVR_TIMEOUT);
1753 goto err_get_xri_exit;
1755 *txxri = rsp->ulpContext;
1758 evt->wait_time_stamp = jiffies;
1759 ret_val = wait_event_interruptible_timeout(
1760 evt->wq, !list_empty(&evt->events_to_see),
1761 ((phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT) * HZ);
1762 if (list_empty(&evt->events_to_see))
1763 ret_val = (ret_val) ? EINTR : ETIMEDOUT;
1765 ret_val = IOCB_SUCCESS;
1766 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1767 list_move(evt->events_to_see.prev, &evt->events_to_get);
1768 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1769 *rxxri = (list_entry(evt->events_to_get.prev,
1770 typeof(struct event_data),
1776 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1777 lpfc_bsg_event_unref(evt); /* release ref */
1778 lpfc_bsg_event_unref(evt); /* delete */
1779 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1783 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
1787 if (cmdiocbq && (ret_val != IOCB_TIMEDOUT))
1788 lpfc_sli_release_iocbq(phba, cmdiocbq);
1790 lpfc_sli_release_iocbq(phba, rspiocbq);
1795 * diag_cmd_data_alloc - fills in a bde struct with dma buffers
1796 * @phba: Pointer to HBA context object
1797 * @bpl: Pointer to 64 bit bde structure
1798 * @size: Number of bytes to process
1799 * @nocopydata: Flag to copy user data into the allocated buffer
1801 * This function allocates page size buffers and populates an lpfc_dmabufext.
1802 * If allowed the user data pointed to with indataptr is copied into the kernel
1803 * memory. The chained list of page size buffers is returned.
1805 static struct lpfc_dmabufext *
1806 diag_cmd_data_alloc(struct lpfc_hba *phba,
1807 struct ulp_bde64 *bpl, uint32_t size,
1810 struct lpfc_dmabufext *mlist = NULL;
1811 struct lpfc_dmabufext *dmp;
1812 int cnt, offset = 0, i = 0;
1813 struct pci_dev *pcidev;
1815 pcidev = phba->pcidev;
1818 /* We get chunks of 4K */
1819 if (size > BUF_SZ_4K)
1824 /* allocate struct lpfc_dmabufext buffer header */
1825 dmp = kmalloc(sizeof(struct lpfc_dmabufext), GFP_KERNEL);
1829 INIT_LIST_HEAD(&dmp->dma.list);
1831 /* Queue it to a linked list */
1833 list_add_tail(&dmp->dma.list, &mlist->dma.list);
1837 /* allocate buffer */
1838 dmp->dma.virt = dma_alloc_coherent(&pcidev->dev,
1849 bpl->tus.f.bdeFlags = 0;
1850 pci_dma_sync_single_for_device(phba->pcidev,
1851 dmp->dma.phys, LPFC_BPL_SIZE, PCI_DMA_TODEVICE);
1854 memset((uint8_t *)dmp->dma.virt, 0, cnt);
1855 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
1858 /* build buffer ptr list for IOCB */
1859 bpl->addrLow = le32_to_cpu(putPaddrLow(dmp->dma.phys));
1860 bpl->addrHigh = le32_to_cpu(putPaddrHigh(dmp->dma.phys));
1861 bpl->tus.f.bdeSize = (ushort) cnt;
1862 bpl->tus.w = le32_to_cpu(bpl->tus.w);
1873 diag_cmd_data_free(phba, mlist);
1878 * lpfcdiag_loop_post_rxbufs - post the receive buffers for an unsol CT cmd
1879 * @phba: Pointer to HBA context object
1880 * @rxxri: Receive exchange id
1881 * @len: Number of data bytes
1883 * This function allocates and posts a data buffer of sufficient size to recieve
1884 * an unsolicted CT command.
1886 static int lpfcdiag_loop_post_rxbufs(struct lpfc_hba *phba, uint16_t rxxri,
1889 struct lpfc_sli *psli = &phba->sli;
1890 struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
1891 struct lpfc_iocbq *cmdiocbq;
1893 struct list_head head, *curr, *next;
1894 struct lpfc_dmabuf *rxbmp;
1895 struct lpfc_dmabuf *dmp;
1896 struct lpfc_dmabuf *mp[2] = {NULL, NULL};
1897 struct ulp_bde64 *rxbpl = NULL;
1899 struct lpfc_dmabufext *rxbuffer = NULL;
1903 cmdiocbq = lpfc_sli_get_iocbq(phba);
1904 rxbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
1905 if (rxbmp != NULL) {
1906 rxbmp->virt = lpfc_mbuf_alloc(phba, 0, &rxbmp->phys);
1907 INIT_LIST_HEAD(&rxbmp->list);
1908 rxbpl = (struct ulp_bde64 *) rxbmp->virt;
1909 rxbuffer = diag_cmd_data_alloc(phba, rxbpl, len, 0);
1912 if (!cmdiocbq || !rxbmp || !rxbpl || !rxbuffer) {
1914 goto err_post_rxbufs_exit;
1917 /* Queue buffers for the receive exchange */
1918 num_bde = (uint32_t)rxbuffer->flag;
1919 dmp = &rxbuffer->dma;
1921 cmd = &cmdiocbq->iocb;
1924 INIT_LIST_HEAD(&head);
1925 list_add_tail(&head, &dmp->list);
1926 list_for_each_safe(curr, next, &head) {
1927 mp[i] = list_entry(curr, struct lpfc_dmabuf, list);
1930 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
1931 mp[i]->buffer_tag = lpfc_sli_get_buffer_tag(phba);
1932 cmd->un.quexri64cx.buff.bde.addrHigh =
1933 putPaddrHigh(mp[i]->phys);
1934 cmd->un.quexri64cx.buff.bde.addrLow =
1935 putPaddrLow(mp[i]->phys);
1936 cmd->un.quexri64cx.buff.bde.tus.f.bdeSize =
1937 ((struct lpfc_dmabufext *)mp[i])->size;
1938 cmd->un.quexri64cx.buff.buffer_tag = mp[i]->buffer_tag;
1939 cmd->ulpCommand = CMD_QUE_XRI64_CX;
1942 cmd->ulpBdeCount = 1;
1943 cmd->unsli3.que_xri64cx_ext_words.ebde_count = 0;
1946 cmd->un.cont64[i].addrHigh = putPaddrHigh(mp[i]->phys);
1947 cmd->un.cont64[i].addrLow = putPaddrLow(mp[i]->phys);
1948 cmd->un.cont64[i].tus.f.bdeSize =
1949 ((struct lpfc_dmabufext *)mp[i])->size;
1950 cmd->ulpBdeCount = ++i;
1952 if ((--num_bde > 0) && (i < 2))
1955 cmd->ulpCommand = CMD_QUE_XRI_BUF64_CX;
1959 cmd->ulpClass = CLASS3;
1960 cmd->ulpContext = rxxri;
1962 ret_val = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0);
1964 if (ret_val == IOCB_ERROR) {
1965 diag_cmd_data_free(phba,
1966 (struct lpfc_dmabufext *)mp[0]);
1968 diag_cmd_data_free(phba,
1969 (struct lpfc_dmabufext *)mp[1]);
1970 dmp = list_entry(next, struct lpfc_dmabuf, list);
1972 goto err_post_rxbufs_exit;
1975 lpfc_sli_ringpostbuf_put(phba, pring, mp[0]);
1977 lpfc_sli_ringpostbuf_put(phba, pring, mp[1]);
1981 /* The iocb was freed by lpfc_sli_issue_iocb */
1982 cmdiocbq = lpfc_sli_get_iocbq(phba);
1984 dmp = list_entry(next, struct lpfc_dmabuf, list);
1986 goto err_post_rxbufs_exit;
1989 cmd = &cmdiocbq->iocb;
1994 err_post_rxbufs_exit:
1998 lpfc_mbuf_free(phba, rxbmp->virt, rxbmp->phys);
2003 lpfc_sli_release_iocbq(phba, cmdiocbq);
2008 * lpfc_bsg_diag_test - with a port in loopback issues a Ct cmd to itself
2009 * @job: LPFC_BSG_VENDOR_DIAG_TEST fc_bsg_job
2011 * This function receives a user data buffer to be transmitted and received on
2012 * the same port, the link must be up and in loopback mode prior
2014 * 1. A kernel buffer is allocated to copy the user data into.
2015 * 2. The port registers with "itself".
2016 * 3. The transmit and receive exchange ids are obtained.
2017 * 4. The receive exchange id is posted.
2018 * 5. A new els loopback event is created.
2019 * 6. The command and response iocbs are allocated.
2020 * 7. The cmd iocb FsType is set to elx loopback and the CmdRsp to looppback.
2022 * This function is meant to be called n times while the port is in loopback
2023 * so it is the apps responsibility to issue a reset to take the port out
2027 lpfc_bsg_diag_test(struct fc_bsg_job *job)
2029 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
2030 struct lpfc_hba *phba = vport->phba;
2031 struct diag_mode_test *diag_mode;
2032 struct lpfc_bsg_event *evt;
2033 struct event_data *evdat;
2034 struct lpfc_sli *psli = &phba->sli;
2037 size_t segment_len = 0, segment_offset = 0, current_offset = 0;
2039 struct lpfc_iocbq *cmdiocbq, *rspiocbq;
2041 struct lpfc_sli_ct_request *ctreq;
2042 struct lpfc_dmabuf *txbmp;
2043 struct ulp_bde64 *txbpl = NULL;
2044 struct lpfc_dmabufext *txbuffer = NULL;
2045 struct list_head head;
2046 struct lpfc_dmabuf *curr;
2047 uint16_t txxri, rxxri;
2049 uint8_t *ptr = NULL, *rx_databuf = NULL;
2051 unsigned long flags;
2052 void *dataout = NULL;
2055 /* in case no data is returned return just the return code */
2056 job->reply->reply_payload_rcv_len = 0;
2058 if (job->request_len <
2059 sizeof(struct fc_bsg_request) + sizeof(struct diag_mode_test)) {
2060 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2061 "2739 Received DIAG TEST request below minimum "
2064 goto loopback_test_exit;
2067 if (job->request_payload.payload_len !=
2068 job->reply_payload.payload_len) {
2070 goto loopback_test_exit;
2073 diag_mode = (struct diag_mode_test *)
2074 job->request->rqst_data.h_vendor.vendor_cmd;
2076 if ((phba->link_state == LPFC_HBA_ERROR) ||
2077 (psli->sli_flag & LPFC_BLOCK_MGMT_IO) ||
2078 (!(psli->sli_flag & LPFC_SLI_ACTIVE))) {
2080 goto loopback_test_exit;
2083 if (!lpfc_is_link_up(phba) || !(phba->link_flag & LS_LOOPBACK_MODE)) {
2085 goto loopback_test_exit;
2088 size = job->request_payload.payload_len;
2089 full_size = size + ELX_LOOPBACK_HEADER_SZ; /* plus the header */
2091 if ((size == 0) || (size > 80 * BUF_SZ_4K)) {
2093 goto loopback_test_exit;
2096 if (size >= BUF_SZ_4K) {
2098 * Allocate memory for ioctl data. If buffer is bigger than 64k,
2099 * then we allocate 64k and re-use that buffer over and over to
2100 * xfer the whole block. This is because Linux kernel has a
2101 * problem allocating more than 120k of kernel space memory. Saw
2102 * problem with GET_FCPTARGETMAPPING...
2104 if (size <= (64 * 1024))
2107 total_mem = 64 * 1024;
2109 /* Allocate memory for ioctl data */
2110 total_mem = BUF_SZ_4K;
2112 dataout = kmalloc(total_mem, GFP_KERNEL);
2113 if (dataout == NULL) {
2115 goto loopback_test_exit;
2119 ptr += ELX_LOOPBACK_HEADER_SZ;
2120 sg_copy_to_buffer(job->request_payload.sg_list,
2121 job->request_payload.sg_cnt,
2124 rc = lpfcdiag_loop_self_reg(phba, &rpi);
2127 goto loopback_test_exit;
2130 rc = lpfcdiag_loop_get_xri(phba, rpi, &txxri, &rxxri);
2132 lpfcdiag_loop_self_unreg(phba, rpi);
2134 goto loopback_test_exit;
2137 rc = lpfcdiag_loop_post_rxbufs(phba, rxxri, full_size);
2139 lpfcdiag_loop_self_unreg(phba, rpi);
2141 goto loopback_test_exit;
2144 evt = lpfc_bsg_event_new(FC_REG_CT_EVENT, current->pid,
2145 SLI_CT_ELX_LOOPBACK);
2147 lpfcdiag_loop_self_unreg(phba, rpi);
2149 goto loopback_test_exit;
2152 spin_lock_irqsave(&phba->ct_ev_lock, flags);
2153 list_add(&evt->node, &phba->ct_ev_waiters);
2154 lpfc_bsg_event_ref(evt);
2155 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2157 cmdiocbq = lpfc_sli_get_iocbq(phba);
2158 rspiocbq = lpfc_sli_get_iocbq(phba);
2159 txbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2162 txbmp->virt = lpfc_mbuf_alloc(phba, 0, &txbmp->phys);
2163 INIT_LIST_HEAD(&txbmp->list);
2164 txbpl = (struct ulp_bde64 *) txbmp->virt;
2166 txbuffer = diag_cmd_data_alloc(phba,
2167 txbpl, full_size, 0);
2170 if (!cmdiocbq || !rspiocbq || !txbmp || !txbpl || !txbuffer) {
2172 goto err_loopback_test_exit;
2175 cmd = &cmdiocbq->iocb;
2176 rsp = &rspiocbq->iocb;
2178 INIT_LIST_HEAD(&head);
2179 list_add_tail(&head, &txbuffer->dma.list);
2180 list_for_each_entry(curr, &head, list) {
2181 segment_len = ((struct lpfc_dmabufext *)curr)->size;
2182 if (current_offset == 0) {
2184 memset(ctreq, 0, ELX_LOOPBACK_HEADER_SZ);
2185 ctreq->RevisionId.bits.Revision = SLI_CT_REVISION;
2186 ctreq->RevisionId.bits.InId = 0;
2187 ctreq->FsType = SLI_CT_ELX_LOOPBACK;
2188 ctreq->FsSubType = 0;
2189 ctreq->CommandResponse.bits.CmdRsp = ELX_LOOPBACK_DATA;
2190 ctreq->CommandResponse.bits.Size = size;
2191 segment_offset = ELX_LOOPBACK_HEADER_SZ;
2195 BUG_ON(segment_offset >= segment_len);
2196 memcpy(curr->virt + segment_offset,
2197 ptr + current_offset,
2198 segment_len - segment_offset);
2200 current_offset += segment_len - segment_offset;
2201 BUG_ON(current_offset > size);
2205 /* Build the XMIT_SEQUENCE iocb */
2207 num_bde = (uint32_t)txbuffer->flag;
2209 cmd->un.xseq64.bdl.addrHigh = putPaddrHigh(txbmp->phys);
2210 cmd->un.xseq64.bdl.addrLow = putPaddrLow(txbmp->phys);
2211 cmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
2212 cmd->un.xseq64.bdl.bdeSize = (num_bde * sizeof(struct ulp_bde64));
2214 cmd->un.xseq64.w5.hcsw.Fctl = (LS | LA);
2215 cmd->un.xseq64.w5.hcsw.Dfctl = 0;
2216 cmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL;
2217 cmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT;
2219 cmd->ulpCommand = CMD_XMIT_SEQUENCE64_CX;
2220 cmd->ulpBdeCount = 1;
2222 cmd->ulpClass = CLASS3;
2223 cmd->ulpContext = txxri;
2225 cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
2226 cmdiocbq->vport = phba->pport;
2228 rc = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq, rspiocbq,
2229 (phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT);
2231 if ((rc != IOCB_SUCCESS) || (rsp->ulpStatus != IOCB_SUCCESS)) {
2233 goto err_loopback_test_exit;
2237 rc = wait_event_interruptible_timeout(
2238 evt->wq, !list_empty(&evt->events_to_see),
2239 ((phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT) * HZ);
2241 if (list_empty(&evt->events_to_see))
2242 rc = (rc) ? -EINTR : -ETIMEDOUT;
2244 spin_lock_irqsave(&phba->ct_ev_lock, flags);
2245 list_move(evt->events_to_see.prev, &evt->events_to_get);
2246 evdat = list_entry(evt->events_to_get.prev,
2247 typeof(*evdat), node);
2248 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2249 rx_databuf = evdat->data;
2250 if (evdat->len != full_size) {
2251 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
2252 "1603 Loopback test did not receive expected "
2253 "data length. actual length 0x%x expected "
2255 evdat->len, full_size);
2257 } else if (rx_databuf == NULL)
2261 /* skip over elx loopback header */
2262 rx_databuf += ELX_LOOPBACK_HEADER_SZ;
2263 job->reply->reply_payload_rcv_len =
2264 sg_copy_from_buffer(job->reply_payload.sg_list,
2265 job->reply_payload.sg_cnt,
2267 job->reply->reply_payload_rcv_len = size;
2271 err_loopback_test_exit:
2272 lpfcdiag_loop_self_unreg(phba, rpi);
2274 spin_lock_irqsave(&phba->ct_ev_lock, flags);
2275 lpfc_bsg_event_unref(evt); /* release ref */
2276 lpfc_bsg_event_unref(evt); /* delete */
2277 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2279 if (cmdiocbq != NULL)
2280 lpfc_sli_release_iocbq(phba, cmdiocbq);
2282 if (rspiocbq != NULL)
2283 lpfc_sli_release_iocbq(phba, rspiocbq);
2285 if (txbmp != NULL) {
2286 if (txbpl != NULL) {
2287 if (txbuffer != NULL)
2288 diag_cmd_data_free(phba, txbuffer);
2289 lpfc_mbuf_free(phba, txbmp->virt, txbmp->phys);
2296 /* make error code available to userspace */
2297 job->reply->result = rc;
2298 job->dd_data = NULL;
2299 /* complete the job back to userspace if no error */
2306 * lpfc_bsg_get_dfc_rev - process a GET_DFC_REV bsg vendor command
2307 * @job: GET_DFC_REV fc_bsg_job
2310 lpfc_bsg_get_dfc_rev(struct fc_bsg_job *job)
2312 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
2313 struct lpfc_hba *phba = vport->phba;
2314 struct get_mgmt_rev *event_req;
2315 struct get_mgmt_rev_reply *event_reply;
2318 if (job->request_len <
2319 sizeof(struct fc_bsg_request) + sizeof(struct get_mgmt_rev)) {
2320 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2321 "2740 Received GET_DFC_REV request below "
2327 event_req = (struct get_mgmt_rev *)
2328 job->request->rqst_data.h_vendor.vendor_cmd;
2330 event_reply = (struct get_mgmt_rev_reply *)
2331 job->reply->reply_data.vendor_reply.vendor_rsp;
2333 if (job->reply_len <
2334 sizeof(struct fc_bsg_request) + sizeof(struct get_mgmt_rev_reply)) {
2335 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2336 "2741 Received GET_DFC_REV reply below "
2342 event_reply->info.a_Major = MANAGEMENT_MAJOR_REV;
2343 event_reply->info.a_Minor = MANAGEMENT_MINOR_REV;
2345 job->reply->result = rc;
2352 * lpfc_bsg_wake_mbox_wait - lpfc_bsg_issue_mbox mbox completion handler
2353 * @phba: Pointer to HBA context object.
2354 * @pmboxq: Pointer to mailbox command.
2356 * This is completion handler function for mailbox commands issued from
2357 * lpfc_bsg_issue_mbox function. This function is called by the
2358 * mailbox event handler function with no lock held. This function
2359 * will wake up thread waiting on the wait queue pointed by context1
2363 lpfc_bsg_wake_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
2365 struct bsg_job_data *dd_data;
2368 struct fc_bsg_job *job;
2370 unsigned long flags;
2372 spin_lock_irqsave(&phba->ct_ev_lock, flags);
2373 dd_data = pmboxq->context1;
2375 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2379 pmb = &dd_data->context_un.mbox.pmboxq->u.mb;
2380 mb = dd_data->context_un.mbox.mb;
2381 job = dd_data->context_un.mbox.set_job;
2382 memcpy(mb, pmb, sizeof(*pmb));
2383 size = job->request_payload.payload_len;
2384 job->reply->reply_payload_rcv_len =
2385 sg_copy_from_buffer(job->reply_payload.sg_list,
2386 job->reply_payload.sg_cnt,
2388 job->reply->result = 0;
2389 dd_data->context_un.mbox.set_job = NULL;
2390 job->dd_data = NULL;
2392 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2393 mempool_free(dd_data->context_un.mbox.pmboxq, phba->mbox_mem_pool);
2400 * lpfc_bsg_check_cmd_access - test for a supported mailbox command
2401 * @phba: Pointer to HBA context object.
2402 * @mb: Pointer to a mailbox object.
2403 * @vport: Pointer to a vport object.
2405 * Some commands require the port to be offline, some may not be called from
2408 static int lpfc_bsg_check_cmd_access(struct lpfc_hba *phba,
2409 MAILBOX_t *mb, struct lpfc_vport *vport)
2411 /* return negative error values for bsg job */
2412 switch (mb->mbxCommand) {
2416 case MBX_CONFIG_LINK:
2417 case MBX_CONFIG_RING:
2418 case MBX_RESET_RING:
2419 case MBX_UNREG_LOGIN:
2421 case MBX_DUMP_CONTEXT:
2425 if (!(vport->fc_flag & FC_OFFLINE_MODE)) {
2426 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2427 "2743 Command 0x%x is illegal in on-line "
2433 case MBX_WRITE_VPARMS:
2436 case MBX_READ_CONFIG:
2437 case MBX_READ_RCONFIG:
2438 case MBX_READ_STATUS:
2441 case MBX_READ_LNK_STAT:
2442 case MBX_DUMP_MEMORY:
2444 case MBX_UPDATE_CFG:
2445 case MBX_KILL_BOARD:
2447 case MBX_LOAD_EXP_ROM:
2449 case MBX_DEL_LD_ENTRY:
2452 case MBX_SLI4_CONFIG:
2453 case MBX_READ_EVENT_LOG_STATUS:
2454 case MBX_WRITE_EVENT_LOG:
2455 case MBX_PORT_CAPABILITIES:
2456 case MBX_PORT_IOV_CONTROL:
2458 case MBX_SET_VARIABLE:
2459 case MBX_RUN_BIU_DIAG64:
2460 case MBX_READ_EVENT_LOG:
2461 case MBX_READ_SPARM64:
2465 case MBX_REG_LOGIN64:
2466 case MBX_CONFIG_PORT:
2467 case MBX_RUN_BIU_DIAG:
2469 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2470 "2742 Unknown Command 0x%x\n",
2479 * lpfc_bsg_issue_mbox - issues a mailbox command on behalf of an app
2480 * @phba: Pointer to HBA context object.
2481 * @mb: Pointer to a mailbox object.
2482 * @vport: Pointer to a vport object.
2484 * Allocate a tracking object, mailbox command memory, get a mailbox
2485 * from the mailbox pool, copy the caller mailbox command.
2487 * If offline and the sli is active we need to poll for the command (port is
2488 * being reset) and com-plete the job, otherwise issue the mailbox command and
2489 * let our completion handler finish the command.
2492 lpfc_bsg_issue_mbox(struct lpfc_hba *phba, struct fc_bsg_job *job,
2493 struct lpfc_vport *vport)
2495 LPFC_MBOXQ_t *pmboxq;
2498 struct bsg_job_data *dd_data;
2502 /* allocate our bsg tracking structure */
2503 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
2505 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2506 "2727 Failed allocation of dd_data\n");
2510 mb = kzalloc(PAGE_SIZE, GFP_KERNEL);
2516 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2523 size = job->request_payload.payload_len;
2524 job->reply->reply_payload_rcv_len =
2525 sg_copy_to_buffer(job->request_payload.sg_list,
2526 job->request_payload.sg_cnt,
2529 rc = lpfc_bsg_check_cmd_access(phba, mb, vport);
2533 mempool_free(pmboxq, phba->mbox_mem_pool);
2534 return rc; /* must be negative */
2537 memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
2538 pmb = &pmboxq->u.mb;
2539 memcpy(pmb, mb, sizeof(*pmb));
2540 pmb->mbxOwner = OWN_HOST;
2541 pmboxq->context1 = NULL;
2542 pmboxq->vport = vport;
2544 if ((vport->fc_flag & FC_OFFLINE_MODE) ||
2545 (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE))) {
2546 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
2547 if (rc != MBX_SUCCESS) {
2548 if (rc != MBX_TIMEOUT) {
2551 mempool_free(pmboxq, phba->mbox_mem_pool);
2553 return (rc == MBX_TIMEOUT) ? -ETIME : -ENODEV;
2556 memcpy(mb, pmb, sizeof(*pmb));
2557 job->reply->reply_payload_rcv_len =
2558 sg_copy_from_buffer(job->reply_payload.sg_list,
2559 job->reply_payload.sg_cnt,
2563 mempool_free(pmboxq, phba->mbox_mem_pool);
2564 /* not waiting mbox already done */
2568 /* setup wake call as IOCB callback */
2569 pmboxq->mbox_cmpl = lpfc_bsg_wake_mbox_wait;
2570 /* setup context field to pass wait_queue pointer to wake function */
2571 pmboxq->context1 = dd_data;
2572 dd_data->type = TYPE_MBOX;
2573 dd_data->context_un.mbox.pmboxq = pmboxq;
2574 dd_data->context_un.mbox.mb = mb;
2575 dd_data->context_un.mbox.set_job = job;
2576 job->dd_data = dd_data;
2577 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
2578 if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
2581 mempool_free(pmboxq, phba->mbox_mem_pool);
2589 * lpfc_bsg_mbox_cmd - process an fc bsg LPFC_BSG_VENDOR_MBOX command
2590 * @job: MBOX fc_bsg_job for LPFC_BSG_VENDOR_MBOX.
2593 lpfc_bsg_mbox_cmd(struct fc_bsg_job *job)
2595 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
2596 struct lpfc_hba *phba = vport->phba;
2599 /* in case no data is transferred */
2600 job->reply->reply_payload_rcv_len = 0;
2601 if (job->request_len <
2602 sizeof(struct fc_bsg_request) + sizeof(struct dfc_mbox_req)) {
2603 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2604 "2737 Received MBOX_REQ request below "
2610 if (job->request_payload.payload_len != PAGE_SIZE) {
2615 if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) {
2620 rc = lpfc_bsg_issue_mbox(phba, job, vport);
2625 job->reply->result = 0;
2626 job->dd_data = NULL;
2629 /* job submitted, will complete later*/
2630 rc = 0; /* return zero, no error */
2632 /* some error occurred */
2633 job->reply->result = rc;
2634 job->dd_data = NULL;
2641 * lpfc_bsg_hst_vendor - process a vendor-specific fc_bsg_job
2642 * @job: fc_bsg_job to handle
2645 lpfc_bsg_hst_vendor(struct fc_bsg_job *job)
2647 int command = job->request->rqst_data.h_vendor.vendor_cmd[0];
2651 case LPFC_BSG_VENDOR_SET_CT_EVENT:
2652 rc = lpfc_bsg_hba_set_event(job);
2654 case LPFC_BSG_VENDOR_GET_CT_EVENT:
2655 rc = lpfc_bsg_hba_get_event(job);
2657 case LPFC_BSG_VENDOR_SEND_MGMT_RESP:
2658 rc = lpfc_bsg_send_mgmt_rsp(job);
2660 case LPFC_BSG_VENDOR_DIAG_MODE:
2661 rc = lpfc_bsg_diag_mode(job);
2663 case LPFC_BSG_VENDOR_DIAG_TEST:
2664 rc = lpfc_bsg_diag_test(job);
2666 case LPFC_BSG_VENDOR_GET_MGMT_REV:
2667 rc = lpfc_bsg_get_dfc_rev(job);
2669 case LPFC_BSG_VENDOR_MBOX:
2670 rc = lpfc_bsg_mbox_cmd(job);
2674 job->reply->reply_payload_rcv_len = 0;
2675 /* make error code available to userspace */
2676 job->reply->result = rc;
2684 * lpfc_bsg_request - handle a bsg request from the FC transport
2685 * @job: fc_bsg_job to handle
2688 lpfc_bsg_request(struct fc_bsg_job *job)
2693 msgcode = job->request->msgcode;
2695 case FC_BSG_HST_VENDOR:
2696 rc = lpfc_bsg_hst_vendor(job);
2698 case FC_BSG_RPT_ELS:
2699 rc = lpfc_bsg_rport_els(job);
2702 rc = lpfc_bsg_send_mgmt_cmd(job);
2706 job->reply->reply_payload_rcv_len = 0;
2707 /* make error code available to userspace */
2708 job->reply->result = rc;
2716 * lpfc_bsg_timeout - handle timeout of a bsg request from the FC transport
2717 * @job: fc_bsg_job that has timed out
2719 * This function just aborts the job's IOCB. The aborted IOCB will return to
2720 * the waiting function which will handle passing the error back to userspace
2723 lpfc_bsg_timeout(struct fc_bsg_job *job)
2725 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
2726 struct lpfc_hba *phba = vport->phba;
2727 struct lpfc_iocbq *cmdiocb;
2728 struct lpfc_bsg_event *evt;
2729 struct lpfc_bsg_iocb *iocb;
2730 struct lpfc_bsg_mbox *mbox;
2731 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
2732 struct bsg_job_data *dd_data;
2733 unsigned long flags;
2735 spin_lock_irqsave(&phba->ct_ev_lock, flags);
2736 dd_data = (struct bsg_job_data *)job->dd_data;
2737 /* timeout and completion crossed paths if no dd_data */
2739 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2743 switch (dd_data->type) {
2745 iocb = &dd_data->context_un.iocb;
2746 cmdiocb = iocb->cmdiocbq;
2747 /* hint to completion handler that the job timed out */
2748 job->reply->result = -EAGAIN;
2749 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2750 /* this will call our completion handler */
2751 spin_lock_irq(&phba->hbalock);
2752 lpfc_sli_issue_abort_iotag(phba, pring, cmdiocb);
2753 spin_unlock_irq(&phba->hbalock);
2756 evt = dd_data->context_un.evt;
2757 /* this event has no job anymore */
2758 evt->set_job = NULL;
2759 job->dd_data = NULL;
2760 job->reply->reply_payload_rcv_len = 0;
2761 /* Return -EAGAIN which is our way of signallying the
2764 job->reply->result = -EAGAIN;
2765 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2769 mbox = &dd_data->context_un.mbox;
2770 /* this mbox has no job anymore */
2771 mbox->set_job = NULL;
2772 job->dd_data = NULL;
2773 job->reply->reply_payload_rcv_len = 0;
2774 job->reply->result = -EAGAIN;
2775 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2779 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2783 /* scsi transport fc fc_bsg_job_timeout expects a zero return code,
2784 * otherwise an error message will be displayed on the console
2785 * so always return success (zero)