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[SCSI] lpfc 8.3.17: Code Cleanup and Locking fixes
[deliverable/linux.git] / drivers / scsi / lpfc / lpfc_bsg.c
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. *
6 * www.emulex.com *
7 * *
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 *******************************************************************/
20
21 #include <linux/interrupt.h>
22 #include <linux/mempool.h>
23 #include <linux/pci.h>
24 #include <linux/slab.h>
25 #include <linux/delay.h>
26
27 #include <scsi/scsi.h>
28 #include <scsi/scsi_host.h>
29 #include <scsi/scsi_transport_fc.h>
30 #include <scsi/scsi_bsg_fc.h>
31 #include <scsi/fc/fc_fs.h>
32
33 #include "lpfc_hw4.h"
34 #include "lpfc_hw.h"
35 #include "lpfc_sli.h"
36 #include "lpfc_sli4.h"
37 #include "lpfc_nl.h"
38 #include "lpfc_bsg.h"
39 #include "lpfc_disc.h"
40 #include "lpfc_scsi.h"
41 #include "lpfc.h"
42 #include "lpfc_logmsg.h"
43 #include "lpfc_crtn.h"
44 #include "lpfc_vport.h"
45 #include "lpfc_version.h"
46
47 struct lpfc_bsg_event {
48 struct list_head node;
49 struct kref kref;
50 wait_queue_head_t wq;
51
52 /* Event type and waiter identifiers */
53 uint32_t type_mask;
54 uint32_t req_id;
55 uint32_t reg_id;
56
57 /* next two flags are here for the auto-delete logic */
58 unsigned long wait_time_stamp;
59 int waiting;
60
61 /* seen and not seen events */
62 struct list_head events_to_get;
63 struct list_head events_to_see;
64
65 /* job waiting for this event to finish */
66 struct fc_bsg_job *set_job;
67 };
68
69 struct lpfc_bsg_iocb {
70 struct lpfc_iocbq *cmdiocbq;
71 struct lpfc_iocbq *rspiocbq;
72 struct lpfc_dmabuf *bmp;
73 struct lpfc_nodelist *ndlp;
74
75 /* job waiting for this iocb to finish */
76 struct fc_bsg_job *set_job;
77 };
78
79 struct lpfc_bsg_mbox {
80 LPFC_MBOXQ_t *pmboxq;
81 MAILBOX_t *mb;
82 struct lpfc_dmabuf *rxbmp; /* for BIU diags */
83 struct lpfc_dmabufext *dmp; /* for BIU diags */
84 uint8_t *ext; /* extended mailbox data */
85 uint32_t mbOffset; /* from app */
86 uint32_t inExtWLen; /* from app */
87 uint32_t outExtWLen; /* from app */
88
89 /* job waiting for this mbox command to finish */
90 struct fc_bsg_job *set_job;
91 };
92
93 #define MENLO_DID 0x0000FC0E
94
95 struct lpfc_bsg_menlo {
96 struct lpfc_iocbq *cmdiocbq;
97 struct lpfc_iocbq *rspiocbq;
98 struct lpfc_dmabuf *bmp;
99
100 /* job waiting for this iocb to finish */
101 struct fc_bsg_job *set_job;
102 };
103
104 #define TYPE_EVT 1
105 #define TYPE_IOCB 2
106 #define TYPE_MBOX 3
107 #define TYPE_MENLO 4
108 struct bsg_job_data {
109 uint32_t type;
110 union {
111 struct lpfc_bsg_event *evt;
112 struct lpfc_bsg_iocb iocb;
113 struct lpfc_bsg_mbox mbox;
114 struct lpfc_bsg_menlo menlo;
115 } context_un;
116 };
117
118 struct event_data {
119 struct list_head node;
120 uint32_t type;
121 uint32_t immed_dat;
122 void *data;
123 uint32_t len;
124 };
125
126 #define BUF_SZ_4K 4096
127 #define SLI_CT_ELX_LOOPBACK 0x10
128
129 enum ELX_LOOPBACK_CMD {
130 ELX_LOOPBACK_XRI_SETUP,
131 ELX_LOOPBACK_DATA,
132 };
133
134 #define ELX_LOOPBACK_HEADER_SZ \
135 (size_t)(&((struct lpfc_sli_ct_request *)NULL)->un)
136
137 struct lpfc_dmabufext {
138 struct lpfc_dmabuf dma;
139 uint32_t size;
140 uint32_t flag;
141 };
142
143 /**
144 * lpfc_bsg_send_mgmt_cmd_cmp - lpfc_bsg_send_mgmt_cmd's completion handler
145 * @phba: Pointer to HBA context object.
146 * @cmdiocbq: Pointer to command iocb.
147 * @rspiocbq: Pointer to response iocb.
148 *
149 * This function is the completion handler for iocbs issued using
150 * lpfc_bsg_send_mgmt_cmd function. This function is called by the
151 * ring event handler function without any lock held. This function
152 * can be called from both worker thread context and interrupt
153 * context. This function also can be called from another thread which
154 * cleans up the SLI layer objects.
155 * This function copies the contents of the response iocb to the
156 * response iocb memory object provided by the caller of
157 * lpfc_sli_issue_iocb_wait and then wakes up the thread which
158 * sleeps for the iocb completion.
159 **/
160 static void
161 lpfc_bsg_send_mgmt_cmd_cmp(struct lpfc_hba *phba,
162 struct lpfc_iocbq *cmdiocbq,
163 struct lpfc_iocbq *rspiocbq)
164 {
165 unsigned long iflags;
166 struct bsg_job_data *dd_data;
167 struct fc_bsg_job *job;
168 IOCB_t *rsp;
169 struct lpfc_dmabuf *bmp;
170 struct lpfc_nodelist *ndlp;
171 struct lpfc_bsg_iocb *iocb;
172 unsigned long flags;
173 int rc = 0;
174
175 spin_lock_irqsave(&phba->ct_ev_lock, flags);
176 dd_data = cmdiocbq->context1;
177 if (!dd_data) {
178 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
179 return;
180 }
181
182 iocb = &dd_data->context_un.iocb;
183 job = iocb->set_job;
184 job->dd_data = NULL; /* so timeout handler does not reply */
185
186 spin_lock_irqsave(&phba->hbalock, iflags);
187 cmdiocbq->iocb_flag |= LPFC_IO_WAKE;
188 if (cmdiocbq->context2 && rspiocbq)
189 memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb,
190 &rspiocbq->iocb, sizeof(IOCB_t));
191 spin_unlock_irqrestore(&phba->hbalock, iflags);
192
193 bmp = iocb->bmp;
194 rspiocbq = iocb->rspiocbq;
195 rsp = &rspiocbq->iocb;
196 ndlp = iocb->ndlp;
197
198 pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
199 job->request_payload.sg_cnt, DMA_TO_DEVICE);
200 pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list,
201 job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
202
203 if (rsp->ulpStatus) {
204 if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
205 switch (rsp->un.ulpWord[4] & 0xff) {
206 case IOERR_SEQUENCE_TIMEOUT:
207 rc = -ETIMEDOUT;
208 break;
209 case IOERR_INVALID_RPI:
210 rc = -EFAULT;
211 break;
212 default:
213 rc = -EACCES;
214 break;
215 }
216 } else
217 rc = -EACCES;
218 } else
219 job->reply->reply_payload_rcv_len =
220 rsp->un.genreq64.bdl.bdeSize;
221
222 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
223 lpfc_sli_release_iocbq(phba, rspiocbq);
224 lpfc_sli_release_iocbq(phba, cmdiocbq);
225 lpfc_nlp_put(ndlp);
226 kfree(bmp);
227 kfree(dd_data);
228 /* make error code available to userspace */
229 job->reply->result = rc;
230 /* complete the job back to userspace */
231 job->job_done(job);
232 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
233 return;
234 }
235
236 /**
237 * lpfc_bsg_send_mgmt_cmd - send a CT command from a bsg request
238 * @job: fc_bsg_job to handle
239 **/
240 static int
241 lpfc_bsg_send_mgmt_cmd(struct fc_bsg_job *job)
242 {
243 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
244 struct lpfc_hba *phba = vport->phba;
245 struct lpfc_rport_data *rdata = job->rport->dd_data;
246 struct lpfc_nodelist *ndlp = rdata->pnode;
247 struct ulp_bde64 *bpl = NULL;
248 uint32_t timeout;
249 struct lpfc_iocbq *cmdiocbq = NULL;
250 struct lpfc_iocbq *rspiocbq = NULL;
251 IOCB_t *cmd;
252 IOCB_t *rsp;
253 struct lpfc_dmabuf *bmp = NULL;
254 int request_nseg;
255 int reply_nseg;
256 struct scatterlist *sgel = NULL;
257 int numbde;
258 dma_addr_t busaddr;
259 struct bsg_job_data *dd_data;
260 uint32_t creg_val;
261 int rc = 0;
262 int iocb_stat;
263
264 /* in case no data is transferred */
265 job->reply->reply_payload_rcv_len = 0;
266
267 /* allocate our bsg tracking structure */
268 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
269 if (!dd_data) {
270 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
271 "2733 Failed allocation of dd_data\n");
272 rc = -ENOMEM;
273 goto no_dd_data;
274 }
275
276 if (!lpfc_nlp_get(ndlp)) {
277 rc = -ENODEV;
278 goto no_ndlp;
279 }
280
281 bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
282 if (!bmp) {
283 rc = -ENOMEM;
284 goto free_ndlp;
285 }
286
287 if (ndlp->nlp_flag & NLP_ELS_SND_MASK) {
288 rc = -ENODEV;
289 goto free_bmp;
290 }
291
292 cmdiocbq = lpfc_sli_get_iocbq(phba);
293 if (!cmdiocbq) {
294 rc = -ENOMEM;
295 goto free_bmp;
296 }
297
298 cmd = &cmdiocbq->iocb;
299 rspiocbq = lpfc_sli_get_iocbq(phba);
300 if (!rspiocbq) {
301 rc = -ENOMEM;
302 goto free_cmdiocbq;
303 }
304
305 rsp = &rspiocbq->iocb;
306 bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys);
307 if (!bmp->virt) {
308 rc = -ENOMEM;
309 goto free_rspiocbq;
310 }
311
312 INIT_LIST_HEAD(&bmp->list);
313 bpl = (struct ulp_bde64 *) bmp->virt;
314 request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list,
315 job->request_payload.sg_cnt, DMA_TO_DEVICE);
316 for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) {
317 busaddr = sg_dma_address(sgel);
318 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
319 bpl->tus.f.bdeSize = sg_dma_len(sgel);
320 bpl->tus.w = cpu_to_le32(bpl->tus.w);
321 bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
322 bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
323 bpl++;
324 }
325
326 reply_nseg = pci_map_sg(phba->pcidev, job->reply_payload.sg_list,
327 job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
328 for_each_sg(job->reply_payload.sg_list, sgel, reply_nseg, numbde) {
329 busaddr = sg_dma_address(sgel);
330 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
331 bpl->tus.f.bdeSize = sg_dma_len(sgel);
332 bpl->tus.w = cpu_to_le32(bpl->tus.w);
333 bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
334 bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
335 bpl++;
336 }
337
338 cmd->un.genreq64.bdl.ulpIoTag32 = 0;
339 cmd->un.genreq64.bdl.addrHigh = putPaddrHigh(bmp->phys);
340 cmd->un.genreq64.bdl.addrLow = putPaddrLow(bmp->phys);
341 cmd->un.genreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
342 cmd->un.genreq64.bdl.bdeSize =
343 (request_nseg + reply_nseg) * sizeof(struct ulp_bde64);
344 cmd->ulpCommand = CMD_GEN_REQUEST64_CR;
345 cmd->un.genreq64.w5.hcsw.Fctl = (SI | LA);
346 cmd->un.genreq64.w5.hcsw.Dfctl = 0;
347 cmd->un.genreq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL;
348 cmd->un.genreq64.w5.hcsw.Type = FC_TYPE_CT;
349 cmd->ulpBdeCount = 1;
350 cmd->ulpLe = 1;
351 cmd->ulpClass = CLASS3;
352 cmd->ulpContext = ndlp->nlp_rpi;
353 cmd->ulpOwner = OWN_CHIP;
354 cmdiocbq->vport = phba->pport;
355 cmdiocbq->context3 = bmp;
356 cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
357 timeout = phba->fc_ratov * 2;
358 cmd->ulpTimeout = timeout;
359
360 cmdiocbq->iocb_cmpl = lpfc_bsg_send_mgmt_cmd_cmp;
361 cmdiocbq->context1 = dd_data;
362 cmdiocbq->context2 = rspiocbq;
363 dd_data->type = TYPE_IOCB;
364 dd_data->context_un.iocb.cmdiocbq = cmdiocbq;
365 dd_data->context_un.iocb.rspiocbq = rspiocbq;
366 dd_data->context_un.iocb.set_job = job;
367 dd_data->context_un.iocb.bmp = bmp;
368 dd_data->context_un.iocb.ndlp = ndlp;
369
370 if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
371 creg_val = readl(phba->HCregaddr);
372 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
373 writel(creg_val, phba->HCregaddr);
374 readl(phba->HCregaddr); /* flush */
375 }
376
377 iocb_stat = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0);
378 if (iocb_stat == IOCB_SUCCESS)
379 return 0; /* done for now */
380 else if (iocb_stat == IOCB_BUSY)
381 rc = -EAGAIN;
382 else
383 rc = -EIO;
384
385
386 /* iocb failed so cleanup */
387 pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
388 job->request_payload.sg_cnt, DMA_TO_DEVICE);
389 pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list,
390 job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
391
392 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
393
394 free_rspiocbq:
395 lpfc_sli_release_iocbq(phba, rspiocbq);
396 free_cmdiocbq:
397 lpfc_sli_release_iocbq(phba, cmdiocbq);
398 free_bmp:
399 kfree(bmp);
400 free_ndlp:
401 lpfc_nlp_put(ndlp);
402 no_ndlp:
403 kfree(dd_data);
404 no_dd_data:
405 /* make error code available to userspace */
406 job->reply->result = rc;
407 job->dd_data = NULL;
408 return rc;
409 }
410
411 /**
412 * lpfc_bsg_rport_els_cmp - lpfc_bsg_rport_els's completion handler
413 * @phba: Pointer to HBA context object.
414 * @cmdiocbq: Pointer to command iocb.
415 * @rspiocbq: Pointer to response iocb.
416 *
417 * This function is the completion handler for iocbs issued using
418 * lpfc_bsg_rport_els_cmp function. This function is called by the
419 * ring event handler function without any lock held. This function
420 * can be called from both worker thread context and interrupt
421 * context. This function also can be called from other thread which
422 * cleans up the SLI layer objects.
423 * This function copies the contents of the response iocb to the
424 * response iocb memory object provided by the caller of
425 * lpfc_sli_issue_iocb_wait and then wakes up the thread which
426 * sleeps for the iocb completion.
427 **/
428 static void
429 lpfc_bsg_rport_els_cmp(struct lpfc_hba *phba,
430 struct lpfc_iocbq *cmdiocbq,
431 struct lpfc_iocbq *rspiocbq)
432 {
433 struct bsg_job_data *dd_data;
434 struct fc_bsg_job *job;
435 IOCB_t *rsp;
436 struct lpfc_nodelist *ndlp;
437 struct lpfc_dmabuf *pbuflist = NULL;
438 struct fc_bsg_ctels_reply *els_reply;
439 uint8_t *rjt_data;
440 unsigned long flags;
441 int rc = 0;
442
443 spin_lock_irqsave(&phba->ct_ev_lock, flags);
444 dd_data = cmdiocbq->context1;
445 /* normal completion and timeout crossed paths, already done */
446 if (!dd_data) {
447 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
448 return;
449 }
450
451 cmdiocbq->iocb_flag |= LPFC_IO_WAKE;
452 if (cmdiocbq->context2 && rspiocbq)
453 memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb,
454 &rspiocbq->iocb, sizeof(IOCB_t));
455
456 job = dd_data->context_un.iocb.set_job;
457 cmdiocbq = dd_data->context_un.iocb.cmdiocbq;
458 rspiocbq = dd_data->context_un.iocb.rspiocbq;
459 rsp = &rspiocbq->iocb;
460 ndlp = dd_data->context_un.iocb.ndlp;
461
462 pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
463 job->request_payload.sg_cnt, DMA_TO_DEVICE);
464 pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list,
465 job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
466
467 if (job->reply->result == -EAGAIN)
468 rc = -EAGAIN;
469 else if (rsp->ulpStatus == IOSTAT_SUCCESS)
470 job->reply->reply_payload_rcv_len =
471 rsp->un.elsreq64.bdl.bdeSize;
472 else if (rsp->ulpStatus == IOSTAT_LS_RJT) {
473 job->reply->reply_payload_rcv_len =
474 sizeof(struct fc_bsg_ctels_reply);
475 /* LS_RJT data returned in word 4 */
476 rjt_data = (uint8_t *)&rsp->un.ulpWord[4];
477 els_reply = &job->reply->reply_data.ctels_reply;
478 els_reply->status = FC_CTELS_STATUS_REJECT;
479 els_reply->rjt_data.action = rjt_data[3];
480 els_reply->rjt_data.reason_code = rjt_data[2];
481 els_reply->rjt_data.reason_explanation = rjt_data[1];
482 els_reply->rjt_data.vendor_unique = rjt_data[0];
483 } else
484 rc = -EIO;
485
486 pbuflist = (struct lpfc_dmabuf *) cmdiocbq->context3;
487 lpfc_mbuf_free(phba, pbuflist->virt, pbuflist->phys);
488 lpfc_sli_release_iocbq(phba, rspiocbq);
489 lpfc_sli_release_iocbq(phba, cmdiocbq);
490 lpfc_nlp_put(ndlp);
491 kfree(dd_data);
492 /* make error code available to userspace */
493 job->reply->result = rc;
494 job->dd_data = NULL;
495 /* complete the job back to userspace */
496 job->job_done(job);
497 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
498 return;
499 }
500
501 /**
502 * lpfc_bsg_rport_els - send an ELS command from a bsg request
503 * @job: fc_bsg_job to handle
504 **/
505 static int
506 lpfc_bsg_rport_els(struct fc_bsg_job *job)
507 {
508 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
509 struct lpfc_hba *phba = vport->phba;
510 struct lpfc_rport_data *rdata = job->rport->dd_data;
511 struct lpfc_nodelist *ndlp = rdata->pnode;
512 uint32_t elscmd;
513 uint32_t cmdsize;
514 uint32_t rspsize;
515 struct lpfc_iocbq *rspiocbq;
516 struct lpfc_iocbq *cmdiocbq;
517 IOCB_t *rsp;
518 uint16_t rpi = 0;
519 struct lpfc_dmabuf *pcmd;
520 struct lpfc_dmabuf *prsp;
521 struct lpfc_dmabuf *pbuflist = NULL;
522 struct ulp_bde64 *bpl;
523 int request_nseg;
524 int reply_nseg;
525 struct scatterlist *sgel = NULL;
526 int numbde;
527 dma_addr_t busaddr;
528 struct bsg_job_data *dd_data;
529 uint32_t creg_val;
530 int rc = 0;
531
532 /* in case no data is transferred */
533 job->reply->reply_payload_rcv_len = 0;
534
535 /* allocate our bsg tracking structure */
536 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
537 if (!dd_data) {
538 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
539 "2735 Failed allocation of dd_data\n");
540 rc = -ENOMEM;
541 goto no_dd_data;
542 }
543
544 if (!lpfc_nlp_get(ndlp)) {
545 rc = -ENODEV;
546 goto free_dd_data;
547 }
548
549 elscmd = job->request->rqst_data.r_els.els_code;
550 cmdsize = job->request_payload.payload_len;
551 rspsize = job->reply_payload.payload_len;
552 rspiocbq = lpfc_sli_get_iocbq(phba);
553 if (!rspiocbq) {
554 lpfc_nlp_put(ndlp);
555 rc = -ENOMEM;
556 goto free_dd_data;
557 }
558
559 rsp = &rspiocbq->iocb;
560 rpi = ndlp->nlp_rpi;
561
562 cmdiocbq = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp,
563 ndlp->nlp_DID, elscmd);
564 if (!cmdiocbq) {
565 rc = -EIO;
566 goto free_rspiocbq;
567 }
568
569 /* prep els iocb set context1 to the ndlp, context2 to the command
570 * dmabuf, context3 holds the data dmabuf
571 */
572 pcmd = (struct lpfc_dmabuf *) cmdiocbq->context2;
573 prsp = (struct lpfc_dmabuf *) pcmd->list.next;
574 lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
575 kfree(pcmd);
576 lpfc_mbuf_free(phba, prsp->virt, prsp->phys);
577 kfree(prsp);
578 cmdiocbq->context2 = NULL;
579
580 pbuflist = (struct lpfc_dmabuf *) cmdiocbq->context3;
581 bpl = (struct ulp_bde64 *) pbuflist->virt;
582
583 request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list,
584 job->request_payload.sg_cnt, DMA_TO_DEVICE);
585 for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) {
586 busaddr = sg_dma_address(sgel);
587 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
588 bpl->tus.f.bdeSize = sg_dma_len(sgel);
589 bpl->tus.w = cpu_to_le32(bpl->tus.w);
590 bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
591 bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
592 bpl++;
593 }
594
595 reply_nseg = pci_map_sg(phba->pcidev, job->reply_payload.sg_list,
596 job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
597 for_each_sg(job->reply_payload.sg_list, sgel, reply_nseg, numbde) {
598 busaddr = sg_dma_address(sgel);
599 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
600 bpl->tus.f.bdeSize = sg_dma_len(sgel);
601 bpl->tus.w = cpu_to_le32(bpl->tus.w);
602 bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
603 bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
604 bpl++;
605 }
606 cmdiocbq->iocb.un.elsreq64.bdl.bdeSize =
607 (request_nseg + reply_nseg) * sizeof(struct ulp_bde64);
608 cmdiocbq->iocb.ulpContext = rpi;
609 cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
610 cmdiocbq->context1 = NULL;
611 cmdiocbq->context2 = NULL;
612
613 cmdiocbq->iocb_cmpl = lpfc_bsg_rport_els_cmp;
614 cmdiocbq->context1 = dd_data;
615 cmdiocbq->context2 = rspiocbq;
616 dd_data->type = TYPE_IOCB;
617 dd_data->context_un.iocb.cmdiocbq = cmdiocbq;
618 dd_data->context_un.iocb.rspiocbq = rspiocbq;
619 dd_data->context_un.iocb.set_job = job;
620 dd_data->context_un.iocb.bmp = NULL;;
621 dd_data->context_un.iocb.ndlp = ndlp;
622
623 if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
624 creg_val = readl(phba->HCregaddr);
625 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
626 writel(creg_val, phba->HCregaddr);
627 readl(phba->HCregaddr); /* flush */
628 }
629 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0);
630 lpfc_nlp_put(ndlp);
631 if (rc == IOCB_SUCCESS)
632 return 0; /* done for now */
633 else if (rc == IOCB_BUSY)
634 rc = -EAGAIN;
635 else
636 rc = -EIO;
637
638 pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
639 job->request_payload.sg_cnt, DMA_TO_DEVICE);
640 pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list,
641 job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
642
643 lpfc_mbuf_free(phba, pbuflist->virt, pbuflist->phys);
644
645 lpfc_sli_release_iocbq(phba, cmdiocbq);
646
647 free_rspiocbq:
648 lpfc_sli_release_iocbq(phba, rspiocbq);
649
650 free_dd_data:
651 kfree(dd_data);
652
653 no_dd_data:
654 /* make error code available to userspace */
655 job->reply->result = rc;
656 job->dd_data = NULL;
657 return rc;
658 }
659
660 /**
661 * lpfc_bsg_event_free - frees an allocated event structure
662 * @kref: Pointer to a kref.
663 *
664 * Called from kref_put. Back cast the kref into an event structure address.
665 * Free any events to get, delete associated nodes, free any events to see,
666 * free any data then free the event itself.
667 **/
668 static void
669 lpfc_bsg_event_free(struct kref *kref)
670 {
671 struct lpfc_bsg_event *evt = container_of(kref, struct lpfc_bsg_event,
672 kref);
673 struct event_data *ed;
674
675 list_del(&evt->node);
676
677 while (!list_empty(&evt->events_to_get)) {
678 ed = list_entry(evt->events_to_get.next, typeof(*ed), node);
679 list_del(&ed->node);
680 kfree(ed->data);
681 kfree(ed);
682 }
683
684 while (!list_empty(&evt->events_to_see)) {
685 ed = list_entry(evt->events_to_see.next, typeof(*ed), node);
686 list_del(&ed->node);
687 kfree(ed->data);
688 kfree(ed);
689 }
690
691 kfree(evt);
692 }
693
694 /**
695 * lpfc_bsg_event_ref - increments the kref for an event
696 * @evt: Pointer to an event structure.
697 **/
698 static inline void
699 lpfc_bsg_event_ref(struct lpfc_bsg_event *evt)
700 {
701 kref_get(&evt->kref);
702 }
703
704 /**
705 * lpfc_bsg_event_unref - Uses kref_put to free an event structure
706 * @evt: Pointer to an event structure.
707 **/
708 static inline void
709 lpfc_bsg_event_unref(struct lpfc_bsg_event *evt)
710 {
711 kref_put(&evt->kref, lpfc_bsg_event_free);
712 }
713
714 /**
715 * lpfc_bsg_event_new - allocate and initialize a event structure
716 * @ev_mask: Mask of events.
717 * @ev_reg_id: Event reg id.
718 * @ev_req_id: Event request id.
719 **/
720 static struct lpfc_bsg_event *
721 lpfc_bsg_event_new(uint32_t ev_mask, int ev_reg_id, uint32_t ev_req_id)
722 {
723 struct lpfc_bsg_event *evt = kzalloc(sizeof(*evt), GFP_KERNEL);
724
725 if (!evt)
726 return NULL;
727
728 INIT_LIST_HEAD(&evt->events_to_get);
729 INIT_LIST_HEAD(&evt->events_to_see);
730 evt->type_mask = ev_mask;
731 evt->req_id = ev_req_id;
732 evt->reg_id = ev_reg_id;
733 evt->wait_time_stamp = jiffies;
734 init_waitqueue_head(&evt->wq);
735 kref_init(&evt->kref);
736 return evt;
737 }
738
739 /**
740 * diag_cmd_data_free - Frees an lpfc dma buffer extension
741 * @phba: Pointer to HBA context object.
742 * @mlist: Pointer to an lpfc dma buffer extension.
743 **/
744 static int
745 diag_cmd_data_free(struct lpfc_hba *phba, struct lpfc_dmabufext *mlist)
746 {
747 struct lpfc_dmabufext *mlast;
748 struct pci_dev *pcidev;
749 struct list_head head, *curr, *next;
750
751 if ((!mlist) || (!lpfc_is_link_up(phba) &&
752 (phba->link_flag & LS_LOOPBACK_MODE))) {
753 return 0;
754 }
755
756 pcidev = phba->pcidev;
757 list_add_tail(&head, &mlist->dma.list);
758
759 list_for_each_safe(curr, next, &head) {
760 mlast = list_entry(curr, struct lpfc_dmabufext , dma.list);
761 if (mlast->dma.virt)
762 dma_free_coherent(&pcidev->dev,
763 mlast->size,
764 mlast->dma.virt,
765 mlast->dma.phys);
766 kfree(mlast);
767 }
768 return 0;
769 }
770
771 /**
772 * lpfc_bsg_ct_unsol_event - process an unsolicited CT command
773 * @phba:
774 * @pring:
775 * @piocbq:
776 *
777 * This function is called when an unsolicited CT command is received. It
778 * forwards the event to any processes registered to receive CT events.
779 **/
780 int
781 lpfc_bsg_ct_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
782 struct lpfc_iocbq *piocbq)
783 {
784 uint32_t evt_req_id = 0;
785 uint32_t cmd;
786 uint32_t len;
787 struct lpfc_dmabuf *dmabuf = NULL;
788 struct lpfc_bsg_event *evt;
789 struct event_data *evt_dat = NULL;
790 struct lpfc_iocbq *iocbq;
791 size_t offset = 0;
792 struct list_head head;
793 struct ulp_bde64 *bde;
794 dma_addr_t dma_addr;
795 int i;
796 struct lpfc_dmabuf *bdeBuf1 = piocbq->context2;
797 struct lpfc_dmabuf *bdeBuf2 = piocbq->context3;
798 struct lpfc_hbq_entry *hbqe;
799 struct lpfc_sli_ct_request *ct_req;
800 struct fc_bsg_job *job = NULL;
801 unsigned long flags;
802 int size = 0;
803
804 INIT_LIST_HEAD(&head);
805 list_add_tail(&head, &piocbq->list);
806
807 if (piocbq->iocb.ulpBdeCount == 0 ||
808 piocbq->iocb.un.cont64[0].tus.f.bdeSize == 0)
809 goto error_ct_unsol_exit;
810
811 if (phba->link_state == LPFC_HBA_ERROR ||
812 (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE)))
813 goto error_ct_unsol_exit;
814
815 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)
816 dmabuf = bdeBuf1;
817 else {
818 dma_addr = getPaddr(piocbq->iocb.un.cont64[0].addrHigh,
819 piocbq->iocb.un.cont64[0].addrLow);
820 dmabuf = lpfc_sli_ringpostbuf_get(phba, pring, dma_addr);
821 }
822 if (dmabuf == NULL)
823 goto error_ct_unsol_exit;
824 ct_req = (struct lpfc_sli_ct_request *)dmabuf->virt;
825 evt_req_id = ct_req->FsType;
826 cmd = ct_req->CommandResponse.bits.CmdRsp;
827 len = ct_req->CommandResponse.bits.Size;
828 if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED))
829 lpfc_sli_ringpostbuf_put(phba, pring, dmabuf);
830
831 spin_lock_irqsave(&phba->ct_ev_lock, flags);
832 list_for_each_entry(evt, &phba->ct_ev_waiters, node) {
833 if (!(evt->type_mask & FC_REG_CT_EVENT) ||
834 evt->req_id != evt_req_id)
835 continue;
836
837 lpfc_bsg_event_ref(evt);
838 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
839 evt_dat = kzalloc(sizeof(*evt_dat), GFP_KERNEL);
840 if (evt_dat == NULL) {
841 spin_lock_irqsave(&phba->ct_ev_lock, flags);
842 lpfc_bsg_event_unref(evt);
843 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
844 "2614 Memory allocation failed for "
845 "CT event\n");
846 break;
847 }
848
849 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
850 /* take accumulated byte count from the last iocbq */
851 iocbq = list_entry(head.prev, typeof(*iocbq), list);
852 evt_dat->len = iocbq->iocb.unsli3.rcvsli3.acc_len;
853 } else {
854 list_for_each_entry(iocbq, &head, list) {
855 for (i = 0; i < iocbq->iocb.ulpBdeCount; i++)
856 evt_dat->len +=
857 iocbq->iocb.un.cont64[i].tus.f.bdeSize;
858 }
859 }
860
861 evt_dat->data = kzalloc(evt_dat->len, GFP_KERNEL);
862 if (evt_dat->data == NULL) {
863 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
864 "2615 Memory allocation failed for "
865 "CT event data, size %d\n",
866 evt_dat->len);
867 kfree(evt_dat);
868 spin_lock_irqsave(&phba->ct_ev_lock, flags);
869 lpfc_bsg_event_unref(evt);
870 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
871 goto error_ct_unsol_exit;
872 }
873
874 list_for_each_entry(iocbq, &head, list) {
875 size = 0;
876 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
877 bdeBuf1 = iocbq->context2;
878 bdeBuf2 = iocbq->context3;
879 }
880 for (i = 0; i < iocbq->iocb.ulpBdeCount; i++) {
881 if (phba->sli3_options &
882 LPFC_SLI3_HBQ_ENABLED) {
883 if (i == 0) {
884 hbqe = (struct lpfc_hbq_entry *)
885 &iocbq->iocb.un.ulpWord[0];
886 size = hbqe->bde.tus.f.bdeSize;
887 dmabuf = bdeBuf1;
888 } else if (i == 1) {
889 hbqe = (struct lpfc_hbq_entry *)
890 &iocbq->iocb.unsli3.
891 sli3Words[4];
892 size = hbqe->bde.tus.f.bdeSize;
893 dmabuf = bdeBuf2;
894 }
895 if ((offset + size) > evt_dat->len)
896 size = evt_dat->len - offset;
897 } else {
898 size = iocbq->iocb.un.cont64[i].
899 tus.f.bdeSize;
900 bde = &iocbq->iocb.un.cont64[i];
901 dma_addr = getPaddr(bde->addrHigh,
902 bde->addrLow);
903 dmabuf = lpfc_sli_ringpostbuf_get(phba,
904 pring, dma_addr);
905 }
906 if (!dmabuf) {
907 lpfc_printf_log(phba, KERN_ERR,
908 LOG_LIBDFC, "2616 No dmabuf "
909 "found for iocbq 0x%p\n",
910 iocbq);
911 kfree(evt_dat->data);
912 kfree(evt_dat);
913 spin_lock_irqsave(&phba->ct_ev_lock,
914 flags);
915 lpfc_bsg_event_unref(evt);
916 spin_unlock_irqrestore(
917 &phba->ct_ev_lock, flags);
918 goto error_ct_unsol_exit;
919 }
920 memcpy((char *)(evt_dat->data) + offset,
921 dmabuf->virt, size);
922 offset += size;
923 if (evt_req_id != SLI_CT_ELX_LOOPBACK &&
924 !(phba->sli3_options &
925 LPFC_SLI3_HBQ_ENABLED)) {
926 lpfc_sli_ringpostbuf_put(phba, pring,
927 dmabuf);
928 } else {
929 switch (cmd) {
930 case ELX_LOOPBACK_DATA:
931 diag_cmd_data_free(phba,
932 (struct lpfc_dmabufext *)
933 dmabuf);
934 break;
935 case ELX_LOOPBACK_XRI_SETUP:
936 if ((phba->sli_rev ==
937 LPFC_SLI_REV2) ||
938 (phba->sli3_options &
939 LPFC_SLI3_HBQ_ENABLED
940 )) {
941 lpfc_in_buf_free(phba,
942 dmabuf);
943 } else {
944 lpfc_post_buffer(phba,
945 pring,
946 1);
947 }
948 break;
949 default:
950 if (!(phba->sli3_options &
951 LPFC_SLI3_HBQ_ENABLED))
952 lpfc_post_buffer(phba,
953 pring,
954 1);
955 break;
956 }
957 }
958 }
959 }
960
961 spin_lock_irqsave(&phba->ct_ev_lock, flags);
962 if (phba->sli_rev == LPFC_SLI_REV4) {
963 evt_dat->immed_dat = phba->ctx_idx;
964 phba->ctx_idx = (phba->ctx_idx + 1) % 64;
965 /* Provide warning for over-run of the ct_ctx array */
966 if (phba->ct_ctx[evt_dat->immed_dat].flags &
967 UNSOL_VALID)
968 lpfc_printf_log(phba, KERN_WARNING, LOG_ELS,
969 "2717 CT context array entry "
970 "[%d] over-run: oxid:x%x, "
971 "sid:x%x\n", phba->ctx_idx,
972 phba->ct_ctx[
973 evt_dat->immed_dat].oxid,
974 phba->ct_ctx[
975 evt_dat->immed_dat].SID);
976 phba->ct_ctx[evt_dat->immed_dat].oxid =
977 piocbq->iocb.ulpContext;
978 phba->ct_ctx[evt_dat->immed_dat].SID =
979 piocbq->iocb.un.rcvels.remoteID;
980 phba->ct_ctx[evt_dat->immed_dat].flags = UNSOL_VALID;
981 } else
982 evt_dat->immed_dat = piocbq->iocb.ulpContext;
983
984 evt_dat->type = FC_REG_CT_EVENT;
985 list_add(&evt_dat->node, &evt->events_to_see);
986 if (evt_req_id == SLI_CT_ELX_LOOPBACK) {
987 wake_up_interruptible(&evt->wq);
988 lpfc_bsg_event_unref(evt);
989 break;
990 }
991
992 list_move(evt->events_to_see.prev, &evt->events_to_get);
993 lpfc_bsg_event_unref(evt);
994
995 job = evt->set_job;
996 evt->set_job = NULL;
997 if (job) {
998 job->reply->reply_payload_rcv_len = size;
999 /* make error code available to userspace */
1000 job->reply->result = 0;
1001 job->dd_data = NULL;
1002 /* complete the job back to userspace */
1003 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1004 job->job_done(job);
1005 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1006 }
1007 }
1008 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1009
1010 error_ct_unsol_exit:
1011 if (!list_empty(&head))
1012 list_del(&head);
1013 if (evt_req_id == SLI_CT_ELX_LOOPBACK)
1014 return 0;
1015 return 1;
1016 }
1017
1018 /**
1019 * lpfc_bsg_hba_set_event - process a SET_EVENT bsg vendor command
1020 * @job: SET_EVENT fc_bsg_job
1021 **/
1022 static int
1023 lpfc_bsg_hba_set_event(struct fc_bsg_job *job)
1024 {
1025 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
1026 struct lpfc_hba *phba = vport->phba;
1027 struct set_ct_event *event_req;
1028 struct lpfc_bsg_event *evt;
1029 int rc = 0;
1030 struct bsg_job_data *dd_data = NULL;
1031 uint32_t ev_mask;
1032 unsigned long flags;
1033
1034 if (job->request_len <
1035 sizeof(struct fc_bsg_request) + sizeof(struct set_ct_event)) {
1036 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1037 "2612 Received SET_CT_EVENT below minimum "
1038 "size\n");
1039 rc = -EINVAL;
1040 goto job_error;
1041 }
1042
1043 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
1044 if (dd_data == NULL) {
1045 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1046 "2734 Failed allocation of dd_data\n");
1047 rc = -ENOMEM;
1048 goto job_error;
1049 }
1050
1051 event_req = (struct set_ct_event *)
1052 job->request->rqst_data.h_vendor.vendor_cmd;
1053 ev_mask = ((uint32_t)(unsigned long)event_req->type_mask &
1054 FC_REG_EVENT_MASK);
1055 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1056 list_for_each_entry(evt, &phba->ct_ev_waiters, node) {
1057 if (evt->reg_id == event_req->ev_reg_id) {
1058 lpfc_bsg_event_ref(evt);
1059 evt->wait_time_stamp = jiffies;
1060 break;
1061 }
1062 }
1063 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1064
1065 if (&evt->node == &phba->ct_ev_waiters) {
1066 /* no event waiting struct yet - first call */
1067 evt = lpfc_bsg_event_new(ev_mask, event_req->ev_reg_id,
1068 event_req->ev_req_id);
1069 if (!evt) {
1070 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1071 "2617 Failed allocation of event "
1072 "waiter\n");
1073 rc = -ENOMEM;
1074 goto job_error;
1075 }
1076
1077 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1078 list_add(&evt->node, &phba->ct_ev_waiters);
1079 lpfc_bsg_event_ref(evt);
1080 evt->wait_time_stamp = jiffies;
1081 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1082 }
1083
1084 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1085 evt->waiting = 1;
1086 dd_data->type = TYPE_EVT;
1087 dd_data->context_un.evt = evt;
1088 evt->set_job = job; /* for unsolicited command */
1089 job->dd_data = dd_data; /* for fc transport timeout callback*/
1090 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1091 return 0; /* call job done later */
1092
1093 job_error:
1094 if (dd_data != NULL)
1095 kfree(dd_data);
1096
1097 job->dd_data = NULL;
1098 return rc;
1099 }
1100
1101 /**
1102 * lpfc_bsg_hba_get_event - process a GET_EVENT bsg vendor command
1103 * @job: GET_EVENT fc_bsg_job
1104 **/
1105 static int
1106 lpfc_bsg_hba_get_event(struct fc_bsg_job *job)
1107 {
1108 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
1109 struct lpfc_hba *phba = vport->phba;
1110 struct get_ct_event *event_req;
1111 struct get_ct_event_reply *event_reply;
1112 struct lpfc_bsg_event *evt;
1113 struct event_data *evt_dat = NULL;
1114 unsigned long flags;
1115 uint32_t rc = 0;
1116
1117 if (job->request_len <
1118 sizeof(struct fc_bsg_request) + sizeof(struct get_ct_event)) {
1119 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1120 "2613 Received GET_CT_EVENT request below "
1121 "minimum size\n");
1122 rc = -EINVAL;
1123 goto job_error;
1124 }
1125
1126 event_req = (struct get_ct_event *)
1127 job->request->rqst_data.h_vendor.vendor_cmd;
1128
1129 event_reply = (struct get_ct_event_reply *)
1130 job->reply->reply_data.vendor_reply.vendor_rsp;
1131 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1132 list_for_each_entry(evt, &phba->ct_ev_waiters, node) {
1133 if (evt->reg_id == event_req->ev_reg_id) {
1134 if (list_empty(&evt->events_to_get))
1135 break;
1136 lpfc_bsg_event_ref(evt);
1137 evt->wait_time_stamp = jiffies;
1138 evt_dat = list_entry(evt->events_to_get.prev,
1139 struct event_data, node);
1140 list_del(&evt_dat->node);
1141 break;
1142 }
1143 }
1144 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1145
1146 /* The app may continue to ask for event data until it gets
1147 * an error indicating that there isn't anymore
1148 */
1149 if (evt_dat == NULL) {
1150 job->reply->reply_payload_rcv_len = 0;
1151 rc = -ENOENT;
1152 goto job_error;
1153 }
1154
1155 if (evt_dat->len > job->request_payload.payload_len) {
1156 evt_dat->len = job->request_payload.payload_len;
1157 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1158 "2618 Truncated event data at %d "
1159 "bytes\n",
1160 job->request_payload.payload_len);
1161 }
1162
1163 event_reply->type = evt_dat->type;
1164 event_reply->immed_data = evt_dat->immed_dat;
1165 if (evt_dat->len > 0)
1166 job->reply->reply_payload_rcv_len =
1167 sg_copy_from_buffer(job->request_payload.sg_list,
1168 job->request_payload.sg_cnt,
1169 evt_dat->data, evt_dat->len);
1170 else
1171 job->reply->reply_payload_rcv_len = 0;
1172
1173 if (evt_dat) {
1174 kfree(evt_dat->data);
1175 kfree(evt_dat);
1176 }
1177
1178 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1179 lpfc_bsg_event_unref(evt);
1180 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1181 job->dd_data = NULL;
1182 job->reply->result = 0;
1183 job->job_done(job);
1184 return 0;
1185
1186 job_error:
1187 job->dd_data = NULL;
1188 job->reply->result = rc;
1189 return rc;
1190 }
1191
1192 /**
1193 * lpfc_issue_ct_rsp_cmp - lpfc_issue_ct_rsp's completion handler
1194 * @phba: Pointer to HBA context object.
1195 * @cmdiocbq: Pointer to command iocb.
1196 * @rspiocbq: Pointer to response iocb.
1197 *
1198 * This function is the completion handler for iocbs issued using
1199 * lpfc_issue_ct_rsp_cmp function. This function is called by the
1200 * ring event handler function without any lock held. This function
1201 * can be called from both worker thread context and interrupt
1202 * context. This function also can be called from other thread which
1203 * cleans up the SLI layer objects.
1204 * This function copy the contents of the response iocb to the
1205 * response iocb memory object provided by the caller of
1206 * lpfc_sli_issue_iocb_wait and then wakes up the thread which
1207 * sleeps for the iocb completion.
1208 **/
1209 static void
1210 lpfc_issue_ct_rsp_cmp(struct lpfc_hba *phba,
1211 struct lpfc_iocbq *cmdiocbq,
1212 struct lpfc_iocbq *rspiocbq)
1213 {
1214 struct bsg_job_data *dd_data;
1215 struct fc_bsg_job *job;
1216 IOCB_t *rsp;
1217 struct lpfc_dmabuf *bmp;
1218 struct lpfc_nodelist *ndlp;
1219 unsigned long flags;
1220 int rc = 0;
1221
1222 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1223 dd_data = cmdiocbq->context1;
1224 /* normal completion and timeout crossed paths, already done */
1225 if (!dd_data) {
1226 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1227 return;
1228 }
1229
1230 job = dd_data->context_un.iocb.set_job;
1231 bmp = dd_data->context_un.iocb.bmp;
1232 rsp = &rspiocbq->iocb;
1233 ndlp = dd_data->context_un.iocb.ndlp;
1234
1235 pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
1236 job->request_payload.sg_cnt, DMA_TO_DEVICE);
1237
1238 if (rsp->ulpStatus) {
1239 if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
1240 switch (rsp->un.ulpWord[4] & 0xff) {
1241 case IOERR_SEQUENCE_TIMEOUT:
1242 rc = -ETIMEDOUT;
1243 break;
1244 case IOERR_INVALID_RPI:
1245 rc = -EFAULT;
1246 break;
1247 default:
1248 rc = -EACCES;
1249 break;
1250 }
1251 } else
1252 rc = -EACCES;
1253 } else
1254 job->reply->reply_payload_rcv_len =
1255 rsp->un.genreq64.bdl.bdeSize;
1256
1257 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
1258 lpfc_sli_release_iocbq(phba, cmdiocbq);
1259 lpfc_nlp_put(ndlp);
1260 kfree(bmp);
1261 kfree(dd_data);
1262 /* make error code available to userspace */
1263 job->reply->result = rc;
1264 job->dd_data = NULL;
1265 /* complete the job back to userspace */
1266 job->job_done(job);
1267 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1268 return;
1269 }
1270
1271 /**
1272 * lpfc_issue_ct_rsp - issue a ct response
1273 * @phba: Pointer to HBA context object.
1274 * @job: Pointer to the job object.
1275 * @tag: tag index value into the ports context exchange array.
1276 * @bmp: Pointer to a dma buffer descriptor.
1277 * @num_entry: Number of enties in the bde.
1278 **/
1279 static int
1280 lpfc_issue_ct_rsp(struct lpfc_hba *phba, struct fc_bsg_job *job, uint32_t tag,
1281 struct lpfc_dmabuf *bmp, int num_entry)
1282 {
1283 IOCB_t *icmd;
1284 struct lpfc_iocbq *ctiocb = NULL;
1285 int rc = 0;
1286 struct lpfc_nodelist *ndlp = NULL;
1287 struct bsg_job_data *dd_data;
1288 uint32_t creg_val;
1289
1290 /* allocate our bsg tracking structure */
1291 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
1292 if (!dd_data) {
1293 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1294 "2736 Failed allocation of dd_data\n");
1295 rc = -ENOMEM;
1296 goto no_dd_data;
1297 }
1298
1299 /* Allocate buffer for command iocb */
1300 ctiocb = lpfc_sli_get_iocbq(phba);
1301 if (!ctiocb) {
1302 rc = -ENOMEM;
1303 goto no_ctiocb;
1304 }
1305
1306 icmd = &ctiocb->iocb;
1307 icmd->un.xseq64.bdl.ulpIoTag32 = 0;
1308 icmd->un.xseq64.bdl.addrHigh = putPaddrHigh(bmp->phys);
1309 icmd->un.xseq64.bdl.addrLow = putPaddrLow(bmp->phys);
1310 icmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
1311 icmd->un.xseq64.bdl.bdeSize = (num_entry * sizeof(struct ulp_bde64));
1312 icmd->un.xseq64.w5.hcsw.Fctl = (LS | LA);
1313 icmd->un.xseq64.w5.hcsw.Dfctl = 0;
1314 icmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_SOL_CTL;
1315 icmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT;
1316
1317 /* Fill in rest of iocb */
1318 icmd->ulpCommand = CMD_XMIT_SEQUENCE64_CX;
1319 icmd->ulpBdeCount = 1;
1320 icmd->ulpLe = 1;
1321 icmd->ulpClass = CLASS3;
1322 if (phba->sli_rev == LPFC_SLI_REV4) {
1323 /* Do not issue unsol response if oxid not marked as valid */
1324 if (!(phba->ct_ctx[tag].flags & UNSOL_VALID)) {
1325 rc = IOCB_ERROR;
1326 goto issue_ct_rsp_exit;
1327 }
1328 icmd->ulpContext = phba->ct_ctx[tag].oxid;
1329 ndlp = lpfc_findnode_did(phba->pport, phba->ct_ctx[tag].SID);
1330 if (!ndlp) {
1331 lpfc_printf_log(phba, KERN_WARNING, LOG_ELS,
1332 "2721 ndlp null for oxid %x SID %x\n",
1333 icmd->ulpContext,
1334 phba->ct_ctx[tag].SID);
1335 rc = IOCB_ERROR;
1336 goto issue_ct_rsp_exit;
1337 }
1338
1339 /* Check if the ndlp is active */
1340 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
1341 rc = -IOCB_ERROR;
1342 goto issue_ct_rsp_exit;
1343 }
1344
1345 /* get a refernece count so the ndlp doesn't go away while
1346 * we respond
1347 */
1348 if (!lpfc_nlp_get(ndlp)) {
1349 rc = -IOCB_ERROR;
1350 goto issue_ct_rsp_exit;
1351 }
1352
1353 icmd->un.ulpWord[3] = ndlp->nlp_rpi;
1354 /* The exchange is done, mark the entry as invalid */
1355 phba->ct_ctx[tag].flags &= ~UNSOL_VALID;
1356 } else
1357 icmd->ulpContext = (ushort) tag;
1358
1359 icmd->ulpTimeout = phba->fc_ratov * 2;
1360
1361 /* Xmit CT response on exchange <xid> */
1362 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1363 "2722 Xmit CT response on exchange x%x Data: x%x x%x\n",
1364 icmd->ulpContext, icmd->ulpIoTag, phba->link_state);
1365
1366 ctiocb->iocb_cmpl = NULL;
1367 ctiocb->iocb_flag |= LPFC_IO_LIBDFC;
1368 ctiocb->vport = phba->pport;
1369 ctiocb->context3 = bmp;
1370
1371 ctiocb->iocb_cmpl = lpfc_issue_ct_rsp_cmp;
1372 ctiocb->context1 = dd_data;
1373 ctiocb->context2 = NULL;
1374 dd_data->type = TYPE_IOCB;
1375 dd_data->context_un.iocb.cmdiocbq = ctiocb;
1376 dd_data->context_un.iocb.rspiocbq = NULL;
1377 dd_data->context_un.iocb.set_job = job;
1378 dd_data->context_un.iocb.bmp = bmp;
1379 dd_data->context_un.iocb.ndlp = ndlp;
1380
1381 if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
1382 creg_val = readl(phba->HCregaddr);
1383 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
1384 writel(creg_val, phba->HCregaddr);
1385 readl(phba->HCregaddr); /* flush */
1386 }
1387
1388 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, ctiocb, 0);
1389
1390 if (rc == IOCB_SUCCESS)
1391 return 0; /* done for now */
1392
1393 issue_ct_rsp_exit:
1394 lpfc_sli_release_iocbq(phba, ctiocb);
1395 no_ctiocb:
1396 kfree(dd_data);
1397 no_dd_data:
1398 return rc;
1399 }
1400
1401 /**
1402 * lpfc_bsg_send_mgmt_rsp - process a SEND_MGMT_RESP bsg vendor command
1403 * @job: SEND_MGMT_RESP fc_bsg_job
1404 **/
1405 static int
1406 lpfc_bsg_send_mgmt_rsp(struct fc_bsg_job *job)
1407 {
1408 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
1409 struct lpfc_hba *phba = vport->phba;
1410 struct send_mgmt_resp *mgmt_resp = (struct send_mgmt_resp *)
1411 job->request->rqst_data.h_vendor.vendor_cmd;
1412 struct ulp_bde64 *bpl;
1413 struct lpfc_dmabuf *bmp = NULL;
1414 struct scatterlist *sgel = NULL;
1415 int request_nseg;
1416 int numbde;
1417 dma_addr_t busaddr;
1418 uint32_t tag = mgmt_resp->tag;
1419 unsigned long reqbfrcnt =
1420 (unsigned long)job->request_payload.payload_len;
1421 int rc = 0;
1422
1423 /* in case no data is transferred */
1424 job->reply->reply_payload_rcv_len = 0;
1425
1426 if (!reqbfrcnt || (reqbfrcnt > (80 * BUF_SZ_4K))) {
1427 rc = -ERANGE;
1428 goto send_mgmt_rsp_exit;
1429 }
1430
1431 bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
1432 if (!bmp) {
1433 rc = -ENOMEM;
1434 goto send_mgmt_rsp_exit;
1435 }
1436
1437 bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys);
1438 if (!bmp->virt) {
1439 rc = -ENOMEM;
1440 goto send_mgmt_rsp_free_bmp;
1441 }
1442
1443 INIT_LIST_HEAD(&bmp->list);
1444 bpl = (struct ulp_bde64 *) bmp->virt;
1445 request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list,
1446 job->request_payload.sg_cnt, DMA_TO_DEVICE);
1447 for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) {
1448 busaddr = sg_dma_address(sgel);
1449 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
1450 bpl->tus.f.bdeSize = sg_dma_len(sgel);
1451 bpl->tus.w = cpu_to_le32(bpl->tus.w);
1452 bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
1453 bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
1454 bpl++;
1455 }
1456
1457 rc = lpfc_issue_ct_rsp(phba, job, tag, bmp, request_nseg);
1458
1459 if (rc == IOCB_SUCCESS)
1460 return 0; /* done for now */
1461
1462 /* TBD need to handle a timeout */
1463 pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
1464 job->request_payload.sg_cnt, DMA_TO_DEVICE);
1465 rc = -EACCES;
1466 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
1467
1468 send_mgmt_rsp_free_bmp:
1469 kfree(bmp);
1470 send_mgmt_rsp_exit:
1471 /* make error code available to userspace */
1472 job->reply->result = rc;
1473 job->dd_data = NULL;
1474 return rc;
1475 }
1476
1477 /**
1478 * lpfc_bsg_diag_mode - process a LPFC_BSG_VENDOR_DIAG_MODE bsg vendor command
1479 * @job: LPFC_BSG_VENDOR_DIAG_MODE
1480 *
1481 * This function is responsible for placing a port into diagnostic loopback
1482 * mode in order to perform a diagnostic loopback test.
1483 * All new scsi requests are blocked, a small delay is used to allow the
1484 * scsi requests to complete then the link is brought down. If the link is
1485 * is placed in loopback mode then scsi requests are again allowed
1486 * so the scsi mid-layer doesn't give up on the port.
1487 * All of this is done in-line.
1488 */
1489 static int
1490 lpfc_bsg_diag_mode(struct fc_bsg_job *job)
1491 {
1492 struct Scsi_Host *shost = job->shost;
1493 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
1494 struct lpfc_hba *phba = vport->phba;
1495 struct diag_mode_set *loopback_mode;
1496 struct lpfc_sli *psli = &phba->sli;
1497 struct lpfc_sli_ring *pring = &psli->ring[LPFC_FCP_RING];
1498 uint32_t link_flags;
1499 uint32_t timeout;
1500 struct lpfc_vport **vports;
1501 LPFC_MBOXQ_t *pmboxq;
1502 int mbxstatus;
1503 int i = 0;
1504 int rc = 0;
1505
1506 /* no data to return just the return code */
1507 job->reply->reply_payload_rcv_len = 0;
1508
1509 if (job->request_len <
1510 sizeof(struct fc_bsg_request) + sizeof(struct diag_mode_set)) {
1511 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1512 "2738 Received DIAG MODE request below minimum "
1513 "size\n");
1514 rc = -EINVAL;
1515 goto job_error;
1516 }
1517
1518 loopback_mode = (struct diag_mode_set *)
1519 job->request->rqst_data.h_vendor.vendor_cmd;
1520 link_flags = loopback_mode->type;
1521 timeout = loopback_mode->timeout;
1522
1523 if ((phba->link_state == LPFC_HBA_ERROR) ||
1524 (psli->sli_flag & LPFC_BLOCK_MGMT_IO) ||
1525 (!(psli->sli_flag & LPFC_SLI_ACTIVE))) {
1526 rc = -EACCES;
1527 goto job_error;
1528 }
1529
1530 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1531 if (!pmboxq) {
1532 rc = -ENOMEM;
1533 goto job_error;
1534 }
1535
1536 vports = lpfc_create_vport_work_array(phba);
1537 if (vports) {
1538 for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
1539 shost = lpfc_shost_from_vport(vports[i]);
1540 scsi_block_requests(shost);
1541 }
1542
1543 lpfc_destroy_vport_work_array(phba, vports);
1544 } else {
1545 shost = lpfc_shost_from_vport(phba->pport);
1546 scsi_block_requests(shost);
1547 }
1548
1549 while (pring->txcmplq_cnt) {
1550 if (i++ > 500) /* wait up to 5 seconds */
1551 break;
1552
1553 msleep(10);
1554 }
1555
1556 memset((void *)pmboxq, 0, sizeof(LPFC_MBOXQ_t));
1557 pmboxq->u.mb.mbxCommand = MBX_DOWN_LINK;
1558 pmboxq->u.mb.mbxOwner = OWN_HOST;
1559
1560 mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO);
1561
1562 if ((mbxstatus == MBX_SUCCESS) && (pmboxq->u.mb.mbxStatus == 0)) {
1563 /* wait for link down before proceeding */
1564 i = 0;
1565 while (phba->link_state != LPFC_LINK_DOWN) {
1566 if (i++ > timeout) {
1567 rc = -ETIMEDOUT;
1568 goto loopback_mode_exit;
1569 }
1570
1571 msleep(10);
1572 }
1573
1574 memset((void *)pmboxq, 0, sizeof(LPFC_MBOXQ_t));
1575 if (link_flags == INTERNAL_LOOP_BACK)
1576 pmboxq->u.mb.un.varInitLnk.link_flags = FLAGS_LOCAL_LB;
1577 else
1578 pmboxq->u.mb.un.varInitLnk.link_flags =
1579 FLAGS_TOPOLOGY_MODE_LOOP;
1580
1581 pmboxq->u.mb.mbxCommand = MBX_INIT_LINK;
1582 pmboxq->u.mb.mbxOwner = OWN_HOST;
1583
1584 mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq,
1585 LPFC_MBOX_TMO);
1586
1587 if ((mbxstatus != MBX_SUCCESS) || (pmboxq->u.mb.mbxStatus))
1588 rc = -ENODEV;
1589 else {
1590 phba->link_flag |= LS_LOOPBACK_MODE;
1591 /* wait for the link attention interrupt */
1592 msleep(100);
1593
1594 i = 0;
1595 while (phba->link_state != LPFC_HBA_READY) {
1596 if (i++ > timeout) {
1597 rc = -ETIMEDOUT;
1598 break;
1599 }
1600
1601 msleep(10);
1602 }
1603 }
1604
1605 } else
1606 rc = -ENODEV;
1607
1608 loopback_mode_exit:
1609 vports = lpfc_create_vport_work_array(phba);
1610 if (vports) {
1611 for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
1612 shost = lpfc_shost_from_vport(vports[i]);
1613 scsi_unblock_requests(shost);
1614 }
1615 lpfc_destroy_vport_work_array(phba, vports);
1616 } else {
1617 shost = lpfc_shost_from_vport(phba->pport);
1618 scsi_unblock_requests(shost);
1619 }
1620
1621 /*
1622 * Let SLI layer release mboxq if mbox command completed after timeout.
1623 */
1624 if (mbxstatus != MBX_TIMEOUT)
1625 mempool_free(pmboxq, phba->mbox_mem_pool);
1626
1627 job_error:
1628 /* make error code available to userspace */
1629 job->reply->result = rc;
1630 /* complete the job back to userspace if no error */
1631 if (rc == 0)
1632 job->job_done(job);
1633 return rc;
1634 }
1635
1636 /**
1637 * lpfcdiag_loop_self_reg - obtains a remote port login id
1638 * @phba: Pointer to HBA context object
1639 * @rpi: Pointer to a remote port login id
1640 *
1641 * This function obtains a remote port login id so the diag loopback test
1642 * can send and receive its own unsolicited CT command.
1643 **/
1644 static int lpfcdiag_loop_self_reg(struct lpfc_hba *phba, uint16_t * rpi)
1645 {
1646 LPFC_MBOXQ_t *mbox;
1647 struct lpfc_dmabuf *dmabuff;
1648 int status;
1649
1650 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1651 if (!mbox)
1652 return -ENOMEM;
1653
1654 status = lpfc_reg_rpi(phba, 0, phba->pport->fc_myDID,
1655 (uint8_t *)&phba->pport->fc_sparam, mbox, 0);
1656 if (status) {
1657 mempool_free(mbox, phba->mbox_mem_pool);
1658 return -ENOMEM;
1659 }
1660
1661 dmabuff = (struct lpfc_dmabuf *) mbox->context1;
1662 mbox->context1 = NULL;
1663 mbox->context2 = NULL;
1664 status = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
1665
1666 if ((status != MBX_SUCCESS) || (mbox->u.mb.mbxStatus)) {
1667 lpfc_mbuf_free(phba, dmabuff->virt, dmabuff->phys);
1668 kfree(dmabuff);
1669 if (status != MBX_TIMEOUT)
1670 mempool_free(mbox, phba->mbox_mem_pool);
1671 return -ENODEV;
1672 }
1673
1674 *rpi = mbox->u.mb.un.varWords[0];
1675
1676 lpfc_mbuf_free(phba, dmabuff->virt, dmabuff->phys);
1677 kfree(dmabuff);
1678 mempool_free(mbox, phba->mbox_mem_pool);
1679 return 0;
1680 }
1681
1682 /**
1683 * lpfcdiag_loop_self_unreg - unregs from the rpi
1684 * @phba: Pointer to HBA context object
1685 * @rpi: Remote port login id
1686 *
1687 * This function unregisters the rpi obtained in lpfcdiag_loop_self_reg
1688 **/
1689 static int lpfcdiag_loop_self_unreg(struct lpfc_hba *phba, uint16_t rpi)
1690 {
1691 LPFC_MBOXQ_t *mbox;
1692 int status;
1693
1694 /* Allocate mboxq structure */
1695 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1696 if (mbox == NULL)
1697 return -ENOMEM;
1698
1699 lpfc_unreg_login(phba, 0, rpi, mbox);
1700 status = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
1701
1702 if ((status != MBX_SUCCESS) || (mbox->u.mb.mbxStatus)) {
1703 if (status != MBX_TIMEOUT)
1704 mempool_free(mbox, phba->mbox_mem_pool);
1705 return -EIO;
1706 }
1707
1708 mempool_free(mbox, phba->mbox_mem_pool);
1709 return 0;
1710 }
1711
1712 /**
1713 * lpfcdiag_loop_get_xri - obtains the transmit and receive ids
1714 * @phba: Pointer to HBA context object
1715 * @rpi: Remote port login id
1716 * @txxri: Pointer to transmit exchange id
1717 * @rxxri: Pointer to response exchabge id
1718 *
1719 * This function obtains the transmit and receive ids required to send
1720 * an unsolicited ct command with a payload. A special lpfc FsType and CmdRsp
1721 * flags are used to the unsolicted response handler is able to process
1722 * the ct command sent on the same port.
1723 **/
1724 static int lpfcdiag_loop_get_xri(struct lpfc_hba *phba, uint16_t rpi,
1725 uint16_t *txxri, uint16_t * rxxri)
1726 {
1727 struct lpfc_bsg_event *evt;
1728 struct lpfc_iocbq *cmdiocbq, *rspiocbq;
1729 IOCB_t *cmd, *rsp;
1730 struct lpfc_dmabuf *dmabuf;
1731 struct ulp_bde64 *bpl = NULL;
1732 struct lpfc_sli_ct_request *ctreq = NULL;
1733 int ret_val = 0;
1734 int time_left;
1735 int iocb_stat;
1736 unsigned long flags;
1737
1738 *txxri = 0;
1739 *rxxri = 0;
1740 evt = lpfc_bsg_event_new(FC_REG_CT_EVENT, current->pid,
1741 SLI_CT_ELX_LOOPBACK);
1742 if (!evt)
1743 return -ENOMEM;
1744
1745 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1746 list_add(&evt->node, &phba->ct_ev_waiters);
1747 lpfc_bsg_event_ref(evt);
1748 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1749
1750 cmdiocbq = lpfc_sli_get_iocbq(phba);
1751 rspiocbq = lpfc_sli_get_iocbq(phba);
1752
1753 dmabuf = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
1754 if (dmabuf) {
1755 dmabuf->virt = lpfc_mbuf_alloc(phba, 0, &dmabuf->phys);
1756 if (dmabuf->virt) {
1757 INIT_LIST_HEAD(&dmabuf->list);
1758 bpl = (struct ulp_bde64 *) dmabuf->virt;
1759 memset(bpl, 0, sizeof(*bpl));
1760 ctreq = (struct lpfc_sli_ct_request *)(bpl + 1);
1761 bpl->addrHigh =
1762 le32_to_cpu(putPaddrHigh(dmabuf->phys +
1763 sizeof(*bpl)));
1764 bpl->addrLow =
1765 le32_to_cpu(putPaddrLow(dmabuf->phys +
1766 sizeof(*bpl)));
1767 bpl->tus.f.bdeFlags = 0;
1768 bpl->tus.f.bdeSize = ELX_LOOPBACK_HEADER_SZ;
1769 bpl->tus.w = le32_to_cpu(bpl->tus.w);
1770 }
1771 }
1772
1773 if (cmdiocbq == NULL || rspiocbq == NULL ||
1774 dmabuf == NULL || bpl == NULL || ctreq == NULL ||
1775 dmabuf->virt == NULL) {
1776 ret_val = -ENOMEM;
1777 goto err_get_xri_exit;
1778 }
1779
1780 cmd = &cmdiocbq->iocb;
1781 rsp = &rspiocbq->iocb;
1782
1783 memset(ctreq, 0, ELX_LOOPBACK_HEADER_SZ);
1784
1785 ctreq->RevisionId.bits.Revision = SLI_CT_REVISION;
1786 ctreq->RevisionId.bits.InId = 0;
1787 ctreq->FsType = SLI_CT_ELX_LOOPBACK;
1788 ctreq->FsSubType = 0;
1789 ctreq->CommandResponse.bits.CmdRsp = ELX_LOOPBACK_XRI_SETUP;
1790 ctreq->CommandResponse.bits.Size = 0;
1791
1792
1793 cmd->un.xseq64.bdl.addrHigh = putPaddrHigh(dmabuf->phys);
1794 cmd->un.xseq64.bdl.addrLow = putPaddrLow(dmabuf->phys);
1795 cmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
1796 cmd->un.xseq64.bdl.bdeSize = sizeof(*bpl);
1797
1798 cmd->un.xseq64.w5.hcsw.Fctl = LA;
1799 cmd->un.xseq64.w5.hcsw.Dfctl = 0;
1800 cmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL;
1801 cmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT;
1802
1803 cmd->ulpCommand = CMD_XMIT_SEQUENCE64_CR;
1804 cmd->ulpBdeCount = 1;
1805 cmd->ulpLe = 1;
1806 cmd->ulpClass = CLASS3;
1807 cmd->ulpContext = rpi;
1808
1809 cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
1810 cmdiocbq->vport = phba->pport;
1811
1812 iocb_stat = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq,
1813 rspiocbq,
1814 (phba->fc_ratov * 2)
1815 + LPFC_DRVR_TIMEOUT);
1816 if (iocb_stat) {
1817 ret_val = -EIO;
1818 goto err_get_xri_exit;
1819 }
1820 *txxri = rsp->ulpContext;
1821
1822 evt->waiting = 1;
1823 evt->wait_time_stamp = jiffies;
1824 time_left = wait_event_interruptible_timeout(
1825 evt->wq, !list_empty(&evt->events_to_see),
1826 ((phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT) * HZ);
1827 if (list_empty(&evt->events_to_see))
1828 ret_val = (time_left) ? -EINTR : -ETIMEDOUT;
1829 else {
1830 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1831 list_move(evt->events_to_see.prev, &evt->events_to_get);
1832 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1833 *rxxri = (list_entry(evt->events_to_get.prev,
1834 typeof(struct event_data),
1835 node))->immed_dat;
1836 }
1837 evt->waiting = 0;
1838
1839 err_get_xri_exit:
1840 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1841 lpfc_bsg_event_unref(evt); /* release ref */
1842 lpfc_bsg_event_unref(evt); /* delete */
1843 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1844
1845 if (dmabuf) {
1846 if (dmabuf->virt)
1847 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
1848 kfree(dmabuf);
1849 }
1850
1851 if (cmdiocbq && (iocb_stat != IOCB_TIMEDOUT))
1852 lpfc_sli_release_iocbq(phba, cmdiocbq);
1853 if (rspiocbq)
1854 lpfc_sli_release_iocbq(phba, rspiocbq);
1855 return ret_val;
1856 }
1857
1858 /**
1859 * diag_cmd_data_alloc - fills in a bde struct with dma buffers
1860 * @phba: Pointer to HBA context object
1861 * @bpl: Pointer to 64 bit bde structure
1862 * @size: Number of bytes to process
1863 * @nocopydata: Flag to copy user data into the allocated buffer
1864 *
1865 * This function allocates page size buffers and populates an lpfc_dmabufext.
1866 * If allowed the user data pointed to with indataptr is copied into the kernel
1867 * memory. The chained list of page size buffers is returned.
1868 **/
1869 static struct lpfc_dmabufext *
1870 diag_cmd_data_alloc(struct lpfc_hba *phba,
1871 struct ulp_bde64 *bpl, uint32_t size,
1872 int nocopydata)
1873 {
1874 struct lpfc_dmabufext *mlist = NULL;
1875 struct lpfc_dmabufext *dmp;
1876 int cnt, offset = 0, i = 0;
1877 struct pci_dev *pcidev;
1878
1879 pcidev = phba->pcidev;
1880
1881 while (size) {
1882 /* We get chunks of 4K */
1883 if (size > BUF_SZ_4K)
1884 cnt = BUF_SZ_4K;
1885 else
1886 cnt = size;
1887
1888 /* allocate struct lpfc_dmabufext buffer header */
1889 dmp = kmalloc(sizeof(struct lpfc_dmabufext), GFP_KERNEL);
1890 if (!dmp)
1891 goto out;
1892
1893 INIT_LIST_HEAD(&dmp->dma.list);
1894
1895 /* Queue it to a linked list */
1896 if (mlist)
1897 list_add_tail(&dmp->dma.list, &mlist->dma.list);
1898 else
1899 mlist = dmp;
1900
1901 /* allocate buffer */
1902 dmp->dma.virt = dma_alloc_coherent(&pcidev->dev,
1903 cnt,
1904 &(dmp->dma.phys),
1905 GFP_KERNEL);
1906
1907 if (!dmp->dma.virt)
1908 goto out;
1909
1910 dmp->size = cnt;
1911
1912 if (nocopydata) {
1913 bpl->tus.f.bdeFlags = 0;
1914 pci_dma_sync_single_for_device(phba->pcidev,
1915 dmp->dma.phys, LPFC_BPL_SIZE, PCI_DMA_TODEVICE);
1916
1917 } else {
1918 memset((uint8_t *)dmp->dma.virt, 0, cnt);
1919 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
1920 }
1921
1922 /* build buffer ptr list for IOCB */
1923 bpl->addrLow = le32_to_cpu(putPaddrLow(dmp->dma.phys));
1924 bpl->addrHigh = le32_to_cpu(putPaddrHigh(dmp->dma.phys));
1925 bpl->tus.f.bdeSize = (ushort) cnt;
1926 bpl->tus.w = le32_to_cpu(bpl->tus.w);
1927 bpl++;
1928
1929 i++;
1930 offset += cnt;
1931 size -= cnt;
1932 }
1933
1934 mlist->flag = i;
1935 return mlist;
1936 out:
1937 diag_cmd_data_free(phba, mlist);
1938 return NULL;
1939 }
1940
1941 /**
1942 * lpfcdiag_loop_post_rxbufs - post the receive buffers for an unsol CT cmd
1943 * @phba: Pointer to HBA context object
1944 * @rxxri: Receive exchange id
1945 * @len: Number of data bytes
1946 *
1947 * This function allocates and posts a data buffer of sufficient size to recieve
1948 * an unsolicted CT command.
1949 **/
1950 static int lpfcdiag_loop_post_rxbufs(struct lpfc_hba *phba, uint16_t rxxri,
1951 size_t len)
1952 {
1953 struct lpfc_sli *psli = &phba->sli;
1954 struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
1955 struct lpfc_iocbq *cmdiocbq;
1956 IOCB_t *cmd = NULL;
1957 struct list_head head, *curr, *next;
1958 struct lpfc_dmabuf *rxbmp;
1959 struct lpfc_dmabuf *dmp;
1960 struct lpfc_dmabuf *mp[2] = {NULL, NULL};
1961 struct ulp_bde64 *rxbpl = NULL;
1962 uint32_t num_bde;
1963 struct lpfc_dmabufext *rxbuffer = NULL;
1964 int ret_val = 0;
1965 int iocb_stat;
1966 int i = 0;
1967
1968 cmdiocbq = lpfc_sli_get_iocbq(phba);
1969 rxbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
1970 if (rxbmp != NULL) {
1971 rxbmp->virt = lpfc_mbuf_alloc(phba, 0, &rxbmp->phys);
1972 if (rxbmp->virt) {
1973 INIT_LIST_HEAD(&rxbmp->list);
1974 rxbpl = (struct ulp_bde64 *) rxbmp->virt;
1975 rxbuffer = diag_cmd_data_alloc(phba, rxbpl, len, 0);
1976 }
1977 }
1978
1979 if (!cmdiocbq || !rxbmp || !rxbpl || !rxbuffer) {
1980 ret_val = -ENOMEM;
1981 goto err_post_rxbufs_exit;
1982 }
1983
1984 /* Queue buffers for the receive exchange */
1985 num_bde = (uint32_t)rxbuffer->flag;
1986 dmp = &rxbuffer->dma;
1987
1988 cmd = &cmdiocbq->iocb;
1989 i = 0;
1990
1991 INIT_LIST_HEAD(&head);
1992 list_add_tail(&head, &dmp->list);
1993 list_for_each_safe(curr, next, &head) {
1994 mp[i] = list_entry(curr, struct lpfc_dmabuf, list);
1995 list_del(curr);
1996
1997 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
1998 mp[i]->buffer_tag = lpfc_sli_get_buffer_tag(phba);
1999 cmd->un.quexri64cx.buff.bde.addrHigh =
2000 putPaddrHigh(mp[i]->phys);
2001 cmd->un.quexri64cx.buff.bde.addrLow =
2002 putPaddrLow(mp[i]->phys);
2003 cmd->un.quexri64cx.buff.bde.tus.f.bdeSize =
2004 ((struct lpfc_dmabufext *)mp[i])->size;
2005 cmd->un.quexri64cx.buff.buffer_tag = mp[i]->buffer_tag;
2006 cmd->ulpCommand = CMD_QUE_XRI64_CX;
2007 cmd->ulpPU = 0;
2008 cmd->ulpLe = 1;
2009 cmd->ulpBdeCount = 1;
2010 cmd->unsli3.que_xri64cx_ext_words.ebde_count = 0;
2011
2012 } else {
2013 cmd->un.cont64[i].addrHigh = putPaddrHigh(mp[i]->phys);
2014 cmd->un.cont64[i].addrLow = putPaddrLow(mp[i]->phys);
2015 cmd->un.cont64[i].tus.f.bdeSize =
2016 ((struct lpfc_dmabufext *)mp[i])->size;
2017 cmd->ulpBdeCount = ++i;
2018
2019 if ((--num_bde > 0) && (i < 2))
2020 continue;
2021
2022 cmd->ulpCommand = CMD_QUE_XRI_BUF64_CX;
2023 cmd->ulpLe = 1;
2024 }
2025
2026 cmd->ulpClass = CLASS3;
2027 cmd->ulpContext = rxxri;
2028
2029 iocb_stat = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq,
2030 0);
2031 if (iocb_stat == IOCB_ERROR) {
2032 diag_cmd_data_free(phba,
2033 (struct lpfc_dmabufext *)mp[0]);
2034 if (mp[1])
2035 diag_cmd_data_free(phba,
2036 (struct lpfc_dmabufext *)mp[1]);
2037 dmp = list_entry(next, struct lpfc_dmabuf, list);
2038 ret_val = -EIO;
2039 goto err_post_rxbufs_exit;
2040 }
2041
2042 lpfc_sli_ringpostbuf_put(phba, pring, mp[0]);
2043 if (mp[1]) {
2044 lpfc_sli_ringpostbuf_put(phba, pring, mp[1]);
2045 mp[1] = NULL;
2046 }
2047
2048 /* The iocb was freed by lpfc_sli_issue_iocb */
2049 cmdiocbq = lpfc_sli_get_iocbq(phba);
2050 if (!cmdiocbq) {
2051 dmp = list_entry(next, struct lpfc_dmabuf, list);
2052 ret_val = -EIO;
2053 goto err_post_rxbufs_exit;
2054 }
2055
2056 cmd = &cmdiocbq->iocb;
2057 i = 0;
2058 }
2059 list_del(&head);
2060
2061 err_post_rxbufs_exit:
2062
2063 if (rxbmp) {
2064 if (rxbmp->virt)
2065 lpfc_mbuf_free(phba, rxbmp->virt, rxbmp->phys);
2066 kfree(rxbmp);
2067 }
2068
2069 if (cmdiocbq)
2070 lpfc_sli_release_iocbq(phba, cmdiocbq);
2071 return ret_val;
2072 }
2073
2074 /**
2075 * lpfc_bsg_diag_test - with a port in loopback issues a Ct cmd to itself
2076 * @job: LPFC_BSG_VENDOR_DIAG_TEST fc_bsg_job
2077 *
2078 * This function receives a user data buffer to be transmitted and received on
2079 * the same port, the link must be up and in loopback mode prior
2080 * to being called.
2081 * 1. A kernel buffer is allocated to copy the user data into.
2082 * 2. The port registers with "itself".
2083 * 3. The transmit and receive exchange ids are obtained.
2084 * 4. The receive exchange id is posted.
2085 * 5. A new els loopback event is created.
2086 * 6. The command and response iocbs are allocated.
2087 * 7. The cmd iocb FsType is set to elx loopback and the CmdRsp to looppback.
2088 *
2089 * This function is meant to be called n times while the port is in loopback
2090 * so it is the apps responsibility to issue a reset to take the port out
2091 * of loopback mode.
2092 **/
2093 static int
2094 lpfc_bsg_diag_test(struct fc_bsg_job *job)
2095 {
2096 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
2097 struct lpfc_hba *phba = vport->phba;
2098 struct diag_mode_test *diag_mode;
2099 struct lpfc_bsg_event *evt;
2100 struct event_data *evdat;
2101 struct lpfc_sli *psli = &phba->sli;
2102 uint32_t size;
2103 uint32_t full_size;
2104 size_t segment_len = 0, segment_offset = 0, current_offset = 0;
2105 uint16_t rpi;
2106 struct lpfc_iocbq *cmdiocbq, *rspiocbq;
2107 IOCB_t *cmd, *rsp;
2108 struct lpfc_sli_ct_request *ctreq;
2109 struct lpfc_dmabuf *txbmp;
2110 struct ulp_bde64 *txbpl = NULL;
2111 struct lpfc_dmabufext *txbuffer = NULL;
2112 struct list_head head;
2113 struct lpfc_dmabuf *curr;
2114 uint16_t txxri, rxxri;
2115 uint32_t num_bde;
2116 uint8_t *ptr = NULL, *rx_databuf = NULL;
2117 int rc = 0;
2118 int time_left;
2119 int iocb_stat;
2120 unsigned long flags;
2121 void *dataout = NULL;
2122 uint32_t total_mem;
2123
2124 /* in case no data is returned return just the return code */
2125 job->reply->reply_payload_rcv_len = 0;
2126
2127 if (job->request_len <
2128 sizeof(struct fc_bsg_request) + sizeof(struct diag_mode_test)) {
2129 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2130 "2739 Received DIAG TEST request below minimum "
2131 "size\n");
2132 rc = -EINVAL;
2133 goto loopback_test_exit;
2134 }
2135
2136 if (job->request_payload.payload_len !=
2137 job->reply_payload.payload_len) {
2138 rc = -EINVAL;
2139 goto loopback_test_exit;
2140 }
2141
2142 diag_mode = (struct diag_mode_test *)
2143 job->request->rqst_data.h_vendor.vendor_cmd;
2144
2145 if ((phba->link_state == LPFC_HBA_ERROR) ||
2146 (psli->sli_flag & LPFC_BLOCK_MGMT_IO) ||
2147 (!(psli->sli_flag & LPFC_SLI_ACTIVE))) {
2148 rc = -EACCES;
2149 goto loopback_test_exit;
2150 }
2151
2152 if (!lpfc_is_link_up(phba) || !(phba->link_flag & LS_LOOPBACK_MODE)) {
2153 rc = -EACCES;
2154 goto loopback_test_exit;
2155 }
2156
2157 size = job->request_payload.payload_len;
2158 full_size = size + ELX_LOOPBACK_HEADER_SZ; /* plus the header */
2159
2160 if ((size == 0) || (size > 80 * BUF_SZ_4K)) {
2161 rc = -ERANGE;
2162 goto loopback_test_exit;
2163 }
2164
2165 if (size >= BUF_SZ_4K) {
2166 /*
2167 * Allocate memory for ioctl data. If buffer is bigger than 64k,
2168 * then we allocate 64k and re-use that buffer over and over to
2169 * xfer the whole block. This is because Linux kernel has a
2170 * problem allocating more than 120k of kernel space memory. Saw
2171 * problem with GET_FCPTARGETMAPPING...
2172 */
2173 if (size <= (64 * 1024))
2174 total_mem = size;
2175 else
2176 total_mem = 64 * 1024;
2177 } else
2178 /* Allocate memory for ioctl data */
2179 total_mem = BUF_SZ_4K;
2180
2181 dataout = kmalloc(total_mem, GFP_KERNEL);
2182 if (dataout == NULL) {
2183 rc = -ENOMEM;
2184 goto loopback_test_exit;
2185 }
2186
2187 ptr = dataout;
2188 ptr += ELX_LOOPBACK_HEADER_SZ;
2189 sg_copy_to_buffer(job->request_payload.sg_list,
2190 job->request_payload.sg_cnt,
2191 ptr, size);
2192
2193 rc = lpfcdiag_loop_self_reg(phba, &rpi);
2194 if (rc)
2195 goto loopback_test_exit;
2196
2197 rc = lpfcdiag_loop_get_xri(phba, rpi, &txxri, &rxxri);
2198 if (rc) {
2199 lpfcdiag_loop_self_unreg(phba, rpi);
2200 goto loopback_test_exit;
2201 }
2202
2203 rc = lpfcdiag_loop_post_rxbufs(phba, rxxri, full_size);
2204 if (rc) {
2205 lpfcdiag_loop_self_unreg(phba, rpi);
2206 goto loopback_test_exit;
2207 }
2208
2209 evt = lpfc_bsg_event_new(FC_REG_CT_EVENT, current->pid,
2210 SLI_CT_ELX_LOOPBACK);
2211 if (!evt) {
2212 lpfcdiag_loop_self_unreg(phba, rpi);
2213 rc = -ENOMEM;
2214 goto loopback_test_exit;
2215 }
2216
2217 spin_lock_irqsave(&phba->ct_ev_lock, flags);
2218 list_add(&evt->node, &phba->ct_ev_waiters);
2219 lpfc_bsg_event_ref(evt);
2220 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2221
2222 cmdiocbq = lpfc_sli_get_iocbq(phba);
2223 rspiocbq = lpfc_sli_get_iocbq(phba);
2224 txbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2225
2226 if (txbmp) {
2227 txbmp->virt = lpfc_mbuf_alloc(phba, 0, &txbmp->phys);
2228 if (txbmp->virt) {
2229 INIT_LIST_HEAD(&txbmp->list);
2230 txbpl = (struct ulp_bde64 *) txbmp->virt;
2231 txbuffer = diag_cmd_data_alloc(phba,
2232 txbpl, full_size, 0);
2233 }
2234 }
2235
2236 if (!cmdiocbq || !rspiocbq || !txbmp || !txbpl || !txbuffer ||
2237 !txbmp->virt) {
2238 rc = -ENOMEM;
2239 goto err_loopback_test_exit;
2240 }
2241
2242 cmd = &cmdiocbq->iocb;
2243 rsp = &rspiocbq->iocb;
2244
2245 INIT_LIST_HEAD(&head);
2246 list_add_tail(&head, &txbuffer->dma.list);
2247 list_for_each_entry(curr, &head, list) {
2248 segment_len = ((struct lpfc_dmabufext *)curr)->size;
2249 if (current_offset == 0) {
2250 ctreq = curr->virt;
2251 memset(ctreq, 0, ELX_LOOPBACK_HEADER_SZ);
2252 ctreq->RevisionId.bits.Revision = SLI_CT_REVISION;
2253 ctreq->RevisionId.bits.InId = 0;
2254 ctreq->FsType = SLI_CT_ELX_LOOPBACK;
2255 ctreq->FsSubType = 0;
2256 ctreq->CommandResponse.bits.CmdRsp = ELX_LOOPBACK_DATA;
2257 ctreq->CommandResponse.bits.Size = size;
2258 segment_offset = ELX_LOOPBACK_HEADER_SZ;
2259 } else
2260 segment_offset = 0;
2261
2262 BUG_ON(segment_offset >= segment_len);
2263 memcpy(curr->virt + segment_offset,
2264 ptr + current_offset,
2265 segment_len - segment_offset);
2266
2267 current_offset += segment_len - segment_offset;
2268 BUG_ON(current_offset > size);
2269 }
2270 list_del(&head);
2271
2272 /* Build the XMIT_SEQUENCE iocb */
2273
2274 num_bde = (uint32_t)txbuffer->flag;
2275
2276 cmd->un.xseq64.bdl.addrHigh = putPaddrHigh(txbmp->phys);
2277 cmd->un.xseq64.bdl.addrLow = putPaddrLow(txbmp->phys);
2278 cmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
2279 cmd->un.xseq64.bdl.bdeSize = (num_bde * sizeof(struct ulp_bde64));
2280
2281 cmd->un.xseq64.w5.hcsw.Fctl = (LS | LA);
2282 cmd->un.xseq64.w5.hcsw.Dfctl = 0;
2283 cmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL;
2284 cmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT;
2285
2286 cmd->ulpCommand = CMD_XMIT_SEQUENCE64_CX;
2287 cmd->ulpBdeCount = 1;
2288 cmd->ulpLe = 1;
2289 cmd->ulpClass = CLASS3;
2290 cmd->ulpContext = txxri;
2291
2292 cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
2293 cmdiocbq->vport = phba->pport;
2294
2295 iocb_stat = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq,
2296 rspiocbq, (phba->fc_ratov * 2) +
2297 LPFC_DRVR_TIMEOUT);
2298
2299 if ((iocb_stat != IOCB_SUCCESS) || (rsp->ulpStatus != IOCB_SUCCESS)) {
2300 rc = -EIO;
2301 goto err_loopback_test_exit;
2302 }
2303
2304 evt->waiting = 1;
2305 time_left = wait_event_interruptible_timeout(
2306 evt->wq, !list_empty(&evt->events_to_see),
2307 ((phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT) * HZ);
2308 evt->waiting = 0;
2309 if (list_empty(&evt->events_to_see))
2310 rc = (time_left) ? -EINTR : -ETIMEDOUT;
2311 else {
2312 spin_lock_irqsave(&phba->ct_ev_lock, flags);
2313 list_move(evt->events_to_see.prev, &evt->events_to_get);
2314 evdat = list_entry(evt->events_to_get.prev,
2315 typeof(*evdat), node);
2316 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2317 rx_databuf = evdat->data;
2318 if (evdat->len != full_size) {
2319 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
2320 "1603 Loopback test did not receive expected "
2321 "data length. actual length 0x%x expected "
2322 "length 0x%x\n",
2323 evdat->len, full_size);
2324 rc = -EIO;
2325 } else if (rx_databuf == NULL)
2326 rc = -EIO;
2327 else {
2328 rc = IOCB_SUCCESS;
2329 /* skip over elx loopback header */
2330 rx_databuf += ELX_LOOPBACK_HEADER_SZ;
2331 job->reply->reply_payload_rcv_len =
2332 sg_copy_from_buffer(job->reply_payload.sg_list,
2333 job->reply_payload.sg_cnt,
2334 rx_databuf, size);
2335 job->reply->reply_payload_rcv_len = size;
2336 }
2337 }
2338
2339 err_loopback_test_exit:
2340 lpfcdiag_loop_self_unreg(phba, rpi);
2341
2342 spin_lock_irqsave(&phba->ct_ev_lock, flags);
2343 lpfc_bsg_event_unref(evt); /* release ref */
2344 lpfc_bsg_event_unref(evt); /* delete */
2345 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2346
2347 if (cmdiocbq != NULL)
2348 lpfc_sli_release_iocbq(phba, cmdiocbq);
2349
2350 if (rspiocbq != NULL)
2351 lpfc_sli_release_iocbq(phba, rspiocbq);
2352
2353 if (txbmp != NULL) {
2354 if (txbpl != NULL) {
2355 if (txbuffer != NULL)
2356 diag_cmd_data_free(phba, txbuffer);
2357 lpfc_mbuf_free(phba, txbmp->virt, txbmp->phys);
2358 }
2359 kfree(txbmp);
2360 }
2361
2362 loopback_test_exit:
2363 kfree(dataout);
2364 /* make error code available to userspace */
2365 job->reply->result = rc;
2366 job->dd_data = NULL;
2367 /* complete the job back to userspace if no error */
2368 if (rc == 0)
2369 job->job_done(job);
2370 return rc;
2371 }
2372
2373 /**
2374 * lpfc_bsg_get_dfc_rev - process a GET_DFC_REV bsg vendor command
2375 * @job: GET_DFC_REV fc_bsg_job
2376 **/
2377 static int
2378 lpfc_bsg_get_dfc_rev(struct fc_bsg_job *job)
2379 {
2380 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
2381 struct lpfc_hba *phba = vport->phba;
2382 struct get_mgmt_rev *event_req;
2383 struct get_mgmt_rev_reply *event_reply;
2384 int rc = 0;
2385
2386 if (job->request_len <
2387 sizeof(struct fc_bsg_request) + sizeof(struct get_mgmt_rev)) {
2388 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2389 "2740 Received GET_DFC_REV request below "
2390 "minimum size\n");
2391 rc = -EINVAL;
2392 goto job_error;
2393 }
2394
2395 event_req = (struct get_mgmt_rev *)
2396 job->request->rqst_data.h_vendor.vendor_cmd;
2397
2398 event_reply = (struct get_mgmt_rev_reply *)
2399 job->reply->reply_data.vendor_reply.vendor_rsp;
2400
2401 if (job->reply_len <
2402 sizeof(struct fc_bsg_request) + sizeof(struct get_mgmt_rev_reply)) {
2403 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2404 "2741 Received GET_DFC_REV reply below "
2405 "minimum size\n");
2406 rc = -EINVAL;
2407 goto job_error;
2408 }
2409
2410 event_reply->info.a_Major = MANAGEMENT_MAJOR_REV;
2411 event_reply->info.a_Minor = MANAGEMENT_MINOR_REV;
2412 job_error:
2413 job->reply->result = rc;
2414 if (rc == 0)
2415 job->job_done(job);
2416 return rc;
2417 }
2418
2419 /**
2420 * lpfc_bsg_wake_mbox_wait - lpfc_bsg_issue_mbox mbox completion handler
2421 * @phba: Pointer to HBA context object.
2422 * @pmboxq: Pointer to mailbox command.
2423 *
2424 * This is completion handler function for mailbox commands issued from
2425 * lpfc_bsg_issue_mbox function. This function is called by the
2426 * mailbox event handler function with no lock held. This function
2427 * will wake up thread waiting on the wait queue pointed by context1
2428 * of the mailbox.
2429 **/
2430 void
2431 lpfc_bsg_wake_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
2432 {
2433 struct bsg_job_data *dd_data;
2434 struct fc_bsg_job *job;
2435 uint32_t size;
2436 unsigned long flags;
2437 uint8_t *to;
2438 uint8_t *from;
2439
2440 spin_lock_irqsave(&phba->ct_ev_lock, flags);
2441 dd_data = pmboxq->context1;
2442 /* job already timed out? */
2443 if (!dd_data) {
2444 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2445 return;
2446 }
2447
2448 /* build the outgoing buffer to do an sg copy
2449 * the format is the response mailbox followed by any extended
2450 * mailbox data
2451 */
2452 from = (uint8_t *)&pmboxq->u.mb;
2453 to = (uint8_t *)dd_data->context_un.mbox.mb;
2454 memcpy(to, from, sizeof(MAILBOX_t));
2455 if (pmboxq->u.mb.mbxStatus == MBX_SUCCESS) {
2456 /* copy the extended data if any, count is in words */
2457 if (dd_data->context_un.mbox.outExtWLen) {
2458 from = (uint8_t *)dd_data->context_un.mbox.ext;
2459 to += sizeof(MAILBOX_t);
2460 size = dd_data->context_un.mbox.outExtWLen *
2461 sizeof(uint32_t);
2462 memcpy(to, from, size);
2463 } else if (pmboxq->u.mb.mbxCommand == MBX_RUN_BIU_DIAG64) {
2464 from = (uint8_t *)dd_data->context_un.mbox.
2465 dmp->dma.virt;
2466 to += sizeof(MAILBOX_t);
2467 size = dd_data->context_un.mbox.dmp->size;
2468 memcpy(to, from, size);
2469 } else if ((phba->sli_rev == LPFC_SLI_REV4) &&
2470 (pmboxq->u.mb.mbxCommand == MBX_DUMP_MEMORY)) {
2471 from = (uint8_t *)dd_data->context_un.mbox.dmp->dma.
2472 virt;
2473 to += sizeof(MAILBOX_t);
2474 size = pmboxq->u.mb.un.varWords[5];
2475 memcpy(to, from, size);
2476 } else if (pmboxq->u.mb.mbxCommand == MBX_READ_EVENT_LOG) {
2477 from = (uint8_t *)dd_data->context_un.
2478 mbox.dmp->dma.virt;
2479 to += sizeof(MAILBOX_t);
2480 size = dd_data->context_un.mbox.dmp->size;
2481 memcpy(to, from, size);
2482 }
2483 }
2484
2485 from = (uint8_t *)dd_data->context_un.mbox.mb;
2486 job = dd_data->context_un.mbox.set_job;
2487 size = job->reply_payload.payload_len;
2488 job->reply->reply_payload_rcv_len =
2489 sg_copy_from_buffer(job->reply_payload.sg_list,
2490 job->reply_payload.sg_cnt,
2491 from, size);
2492 job->reply->result = 0;
2493
2494 dd_data->context_un.mbox.set_job = NULL;
2495 job->dd_data = NULL;
2496 job->job_done(job);
2497 /* need to hold the lock until we call job done to hold off
2498 * the timeout handler returning to the midlayer while
2499 * we are stillprocessing the job
2500 */
2501 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2502
2503 kfree(dd_data->context_un.mbox.mb);
2504 mempool_free(dd_data->context_un.mbox.pmboxq, phba->mbox_mem_pool);
2505 kfree(dd_data->context_un.mbox.ext);
2506 if (dd_data->context_un.mbox.dmp) {
2507 dma_free_coherent(&phba->pcidev->dev,
2508 dd_data->context_un.mbox.dmp->size,
2509 dd_data->context_un.mbox.dmp->dma.virt,
2510 dd_data->context_un.mbox.dmp->dma.phys);
2511 kfree(dd_data->context_un.mbox.dmp);
2512 }
2513 if (dd_data->context_un.mbox.rxbmp) {
2514 lpfc_mbuf_free(phba, dd_data->context_un.mbox.rxbmp->virt,
2515 dd_data->context_un.mbox.rxbmp->phys);
2516 kfree(dd_data->context_un.mbox.rxbmp);
2517 }
2518 kfree(dd_data);
2519 return;
2520 }
2521
2522 /**
2523 * lpfc_bsg_check_cmd_access - test for a supported mailbox command
2524 * @phba: Pointer to HBA context object.
2525 * @mb: Pointer to a mailbox object.
2526 * @vport: Pointer to a vport object.
2527 *
2528 * Some commands require the port to be offline, some may not be called from
2529 * the application.
2530 **/
2531 static int lpfc_bsg_check_cmd_access(struct lpfc_hba *phba,
2532 MAILBOX_t *mb, struct lpfc_vport *vport)
2533 {
2534 /* return negative error values for bsg job */
2535 switch (mb->mbxCommand) {
2536 /* Offline only */
2537 case MBX_INIT_LINK:
2538 case MBX_DOWN_LINK:
2539 case MBX_CONFIG_LINK:
2540 case MBX_CONFIG_RING:
2541 case MBX_RESET_RING:
2542 case MBX_UNREG_LOGIN:
2543 case MBX_CLEAR_LA:
2544 case MBX_DUMP_CONTEXT:
2545 case MBX_RUN_DIAGS:
2546 case MBX_RESTART:
2547 case MBX_SET_MASK:
2548 if (!(vport->fc_flag & FC_OFFLINE_MODE)) {
2549 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2550 "2743 Command 0x%x is illegal in on-line "
2551 "state\n",
2552 mb->mbxCommand);
2553 return -EPERM;
2554 }
2555 case MBX_WRITE_NV:
2556 case MBX_WRITE_VPARMS:
2557 case MBX_LOAD_SM:
2558 case MBX_READ_NV:
2559 case MBX_READ_CONFIG:
2560 case MBX_READ_RCONFIG:
2561 case MBX_READ_STATUS:
2562 case MBX_READ_XRI:
2563 case MBX_READ_REV:
2564 case MBX_READ_LNK_STAT:
2565 case MBX_DUMP_MEMORY:
2566 case MBX_DOWN_LOAD:
2567 case MBX_UPDATE_CFG:
2568 case MBX_KILL_BOARD:
2569 case MBX_LOAD_AREA:
2570 case MBX_LOAD_EXP_ROM:
2571 case MBX_BEACON:
2572 case MBX_DEL_LD_ENTRY:
2573 case MBX_SET_DEBUG:
2574 case MBX_WRITE_WWN:
2575 case MBX_SLI4_CONFIG:
2576 case MBX_READ_EVENT_LOG:
2577 case MBX_READ_EVENT_LOG_STATUS:
2578 case MBX_WRITE_EVENT_LOG:
2579 case MBX_PORT_CAPABILITIES:
2580 case MBX_PORT_IOV_CONTROL:
2581 case MBX_RUN_BIU_DIAG64:
2582 break;
2583 case MBX_SET_VARIABLE:
2584 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2585 "1226 mbox: set_variable 0x%x, 0x%x\n",
2586 mb->un.varWords[0],
2587 mb->un.varWords[1]);
2588 if ((mb->un.varWords[0] == SETVAR_MLOMNT)
2589 && (mb->un.varWords[1] == 1)) {
2590 phba->wait_4_mlo_maint_flg = 1;
2591 } else if (mb->un.varWords[0] == SETVAR_MLORST) {
2592 phba->link_flag &= ~LS_LOOPBACK_MODE;
2593 phba->fc_topology = TOPOLOGY_PT_PT;
2594 }
2595 break;
2596 case MBX_READ_SPARM64:
2597 case MBX_READ_LA:
2598 case MBX_READ_LA64:
2599 case MBX_REG_LOGIN:
2600 case MBX_REG_LOGIN64:
2601 case MBX_CONFIG_PORT:
2602 case MBX_RUN_BIU_DIAG:
2603 default:
2604 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2605 "2742 Unknown Command 0x%x\n",
2606 mb->mbxCommand);
2607 return -EPERM;
2608 }
2609
2610 return 0; /* ok */
2611 }
2612
2613 /**
2614 * lpfc_bsg_issue_mbox - issues a mailbox command on behalf of an app
2615 * @phba: Pointer to HBA context object.
2616 * @mb: Pointer to a mailbox object.
2617 * @vport: Pointer to a vport object.
2618 *
2619 * Allocate a tracking object, mailbox command memory, get a mailbox
2620 * from the mailbox pool, copy the caller mailbox command.
2621 *
2622 * If offline and the sli is active we need to poll for the command (port is
2623 * being reset) and com-plete the job, otherwise issue the mailbox command and
2624 * let our completion handler finish the command.
2625 **/
2626 static uint32_t
2627 lpfc_bsg_issue_mbox(struct lpfc_hba *phba, struct fc_bsg_job *job,
2628 struct lpfc_vport *vport)
2629 {
2630 LPFC_MBOXQ_t *pmboxq = NULL; /* internal mailbox queue */
2631 MAILBOX_t *pmb; /* shortcut to the pmboxq mailbox */
2632 /* a 4k buffer to hold the mb and extended data from/to the bsg */
2633 MAILBOX_t *mb = NULL;
2634 struct bsg_job_data *dd_data = NULL; /* bsg data tracking structure */
2635 uint32_t size;
2636 struct lpfc_dmabuf *rxbmp = NULL; /* for biu diag */
2637 struct lpfc_dmabufext *dmp = NULL; /* for biu diag */
2638 struct ulp_bde64 *rxbpl = NULL;
2639 struct dfc_mbox_req *mbox_req = (struct dfc_mbox_req *)
2640 job->request->rqst_data.h_vendor.vendor_cmd;
2641 uint8_t *ext = NULL;
2642 int rc = 0;
2643 uint8_t *from;
2644
2645 /* in case no data is transferred */
2646 job->reply->reply_payload_rcv_len = 0;
2647
2648 /* check if requested extended data lengths are valid */
2649 if ((mbox_req->inExtWLen > MAILBOX_EXT_SIZE) ||
2650 (mbox_req->outExtWLen > MAILBOX_EXT_SIZE)) {
2651 rc = -ERANGE;
2652 goto job_done;
2653 }
2654
2655 /* allocate our bsg tracking structure */
2656 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
2657 if (!dd_data) {
2658 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2659 "2727 Failed allocation of dd_data\n");
2660 rc = -ENOMEM;
2661 goto job_done;
2662 }
2663
2664 mb = kzalloc(BSG_MBOX_SIZE, GFP_KERNEL);
2665 if (!mb) {
2666 rc = -ENOMEM;
2667 goto job_done;
2668 }
2669
2670 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2671 if (!pmboxq) {
2672 rc = -ENOMEM;
2673 goto job_done;
2674 }
2675 memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
2676
2677 size = job->request_payload.payload_len;
2678 sg_copy_to_buffer(job->request_payload.sg_list,
2679 job->request_payload.sg_cnt,
2680 mb, size);
2681
2682 rc = lpfc_bsg_check_cmd_access(phba, mb, vport);
2683 if (rc != 0)
2684 goto job_done; /* must be negative */
2685
2686 pmb = &pmboxq->u.mb;
2687 memcpy(pmb, mb, sizeof(*pmb));
2688 pmb->mbxOwner = OWN_HOST;
2689 pmboxq->vport = vport;
2690
2691 /* If HBA encountered an error attention, allow only DUMP
2692 * or RESTART mailbox commands until the HBA is restarted.
2693 */
2694 if (phba->pport->stopped &&
2695 pmb->mbxCommand != MBX_DUMP_MEMORY &&
2696 pmb->mbxCommand != MBX_RESTART &&
2697 pmb->mbxCommand != MBX_WRITE_VPARMS &&
2698 pmb->mbxCommand != MBX_WRITE_WWN)
2699 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX,
2700 "2797 mbox: Issued mailbox cmd "
2701 "0x%x while in stopped state.\n",
2702 pmb->mbxCommand);
2703
2704 /* Don't allow mailbox commands to be sent when blocked
2705 * or when in the middle of discovery
2706 */
2707 if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) {
2708 rc = -EAGAIN;
2709 goto job_done;
2710 }
2711
2712 /* extended mailbox commands will need an extended buffer */
2713 if (mbox_req->inExtWLen || mbox_req->outExtWLen) {
2714 ext = kzalloc(MAILBOX_EXT_SIZE, GFP_KERNEL);
2715 if (!ext) {
2716 rc = -ENOMEM;
2717 goto job_done;
2718 }
2719
2720 /* any data for the device? */
2721 if (mbox_req->inExtWLen) {
2722 from = (uint8_t *)mb;
2723 from += sizeof(MAILBOX_t);
2724 memcpy((uint8_t *)ext, from,
2725 mbox_req->inExtWLen * sizeof(uint32_t));
2726 }
2727
2728 pmboxq->context2 = ext;
2729 pmboxq->in_ext_byte_len =
2730 mbox_req->inExtWLen * sizeof(uint32_t);
2731 pmboxq->out_ext_byte_len =
2732 mbox_req->outExtWLen * sizeof(uint32_t);
2733 pmboxq->mbox_offset_word = mbox_req->mbOffset;
2734 }
2735
2736 /* biu diag will need a kernel buffer to transfer the data
2737 * allocate our own buffer and setup the mailbox command to
2738 * use ours
2739 */
2740 if (pmb->mbxCommand == MBX_RUN_BIU_DIAG64) {
2741 uint32_t transmit_length = pmb->un.varWords[1];
2742 uint32_t receive_length = pmb->un.varWords[4];
2743 /* transmit length cannot be greater than receive length or
2744 * mailbox extension size
2745 */
2746 if ((transmit_length > receive_length) ||
2747 (transmit_length > MAILBOX_EXT_SIZE)) {
2748 rc = -ERANGE;
2749 goto job_done;
2750 }
2751
2752 rxbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2753 if (!rxbmp) {
2754 rc = -ENOMEM;
2755 goto job_done;
2756 }
2757
2758 rxbmp->virt = lpfc_mbuf_alloc(phba, 0, &rxbmp->phys);
2759 if (!rxbmp->virt) {
2760 rc = -ENOMEM;
2761 goto job_done;
2762 }
2763
2764 INIT_LIST_HEAD(&rxbmp->list);
2765 rxbpl = (struct ulp_bde64 *) rxbmp->virt;
2766 dmp = diag_cmd_data_alloc(phba, rxbpl, transmit_length, 0);
2767 if (!dmp) {
2768 rc = -ENOMEM;
2769 goto job_done;
2770 }
2771
2772 INIT_LIST_HEAD(&dmp->dma.list);
2773 pmb->un.varBIUdiag.un.s2.xmit_bde64.addrHigh =
2774 putPaddrHigh(dmp->dma.phys);
2775 pmb->un.varBIUdiag.un.s2.xmit_bde64.addrLow =
2776 putPaddrLow(dmp->dma.phys);
2777
2778 pmb->un.varBIUdiag.un.s2.rcv_bde64.addrHigh =
2779 putPaddrHigh(dmp->dma.phys +
2780 pmb->un.varBIUdiag.un.s2.
2781 xmit_bde64.tus.f.bdeSize);
2782 pmb->un.varBIUdiag.un.s2.rcv_bde64.addrLow =
2783 putPaddrLow(dmp->dma.phys +
2784 pmb->un.varBIUdiag.un.s2.
2785 xmit_bde64.tus.f.bdeSize);
2786
2787 /* copy the transmit data found in the mailbox extension area */
2788 from = (uint8_t *)mb;
2789 from += sizeof(MAILBOX_t);
2790 memcpy((uint8_t *)dmp->dma.virt, from, transmit_length);
2791 } else if (pmb->mbxCommand == MBX_READ_EVENT_LOG) {
2792 struct READ_EVENT_LOG_VAR *rdEventLog =
2793 &pmb->un.varRdEventLog ;
2794 uint32_t receive_length = rdEventLog->rcv_bde64.tus.f.bdeSize;
2795 uint32_t mode = bf_get(lpfc_event_log, rdEventLog);
2796
2797 /* receive length cannot be greater than mailbox
2798 * extension size
2799 */
2800 if (receive_length > MAILBOX_EXT_SIZE) {
2801 rc = -ERANGE;
2802 goto job_done;
2803 }
2804
2805 /* mode zero uses a bde like biu diags command */
2806 if (mode == 0) {
2807
2808 /* rebuild the command for sli4 using our own buffers
2809 * like we do for biu diags
2810 */
2811
2812 rxbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2813 if (!rxbmp) {
2814 rc = -ENOMEM;
2815 goto job_done;
2816 }
2817
2818 rxbmp->virt = lpfc_mbuf_alloc(phba, 0, &rxbmp->phys);
2819 rxbpl = (struct ulp_bde64 *) rxbmp->virt;
2820 if (rxbpl) {
2821 INIT_LIST_HEAD(&rxbmp->list);
2822 dmp = diag_cmd_data_alloc(phba, rxbpl,
2823 receive_length, 0);
2824 }
2825
2826 if (!dmp) {
2827 rc = -ENOMEM;
2828 goto job_done;
2829 }
2830
2831 INIT_LIST_HEAD(&dmp->dma.list);
2832 pmb->un.varWords[3] = putPaddrLow(dmp->dma.phys);
2833 pmb->un.varWords[4] = putPaddrHigh(dmp->dma.phys);
2834 }
2835 } else if (phba->sli_rev == LPFC_SLI_REV4) {
2836 if (pmb->mbxCommand == MBX_DUMP_MEMORY) {
2837 /* rebuild the command for sli4 using our own buffers
2838 * like we do for biu diags
2839 */
2840 uint32_t receive_length = pmb->un.varWords[2];
2841 /* receive length cannot be greater than mailbox
2842 * extension size
2843 */
2844 if ((receive_length == 0) ||
2845 (receive_length > MAILBOX_EXT_SIZE)) {
2846 rc = -ERANGE;
2847 goto job_done;
2848 }
2849
2850 rxbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2851 if (!rxbmp) {
2852 rc = -ENOMEM;
2853 goto job_done;
2854 }
2855
2856 rxbmp->virt = lpfc_mbuf_alloc(phba, 0, &rxbmp->phys);
2857 if (!rxbmp->virt) {
2858 rc = -ENOMEM;
2859 goto job_done;
2860 }
2861
2862 INIT_LIST_HEAD(&rxbmp->list);
2863 rxbpl = (struct ulp_bde64 *) rxbmp->virt;
2864 dmp = diag_cmd_data_alloc(phba, rxbpl, receive_length,
2865 0);
2866 if (!dmp) {
2867 rc = -ENOMEM;
2868 goto job_done;
2869 }
2870
2871 INIT_LIST_HEAD(&dmp->dma.list);
2872 pmb->un.varWords[3] = putPaddrLow(dmp->dma.phys);
2873 pmb->un.varWords[4] = putPaddrHigh(dmp->dma.phys);
2874 } else if ((pmb->mbxCommand == MBX_UPDATE_CFG) &&
2875 pmb->un.varUpdateCfg.co) {
2876 struct ulp_bde64 *bde =
2877 (struct ulp_bde64 *)&pmb->un.varWords[4];
2878
2879 /* bde size cannot be greater than mailbox ext size */
2880 if (bde->tus.f.bdeSize > MAILBOX_EXT_SIZE) {
2881 rc = -ERANGE;
2882 goto job_done;
2883 }
2884
2885 rxbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2886 if (!rxbmp) {
2887 rc = -ENOMEM;
2888 goto job_done;
2889 }
2890
2891 rxbmp->virt = lpfc_mbuf_alloc(phba, 0, &rxbmp->phys);
2892 if (!rxbmp->virt) {
2893 rc = -ENOMEM;
2894 goto job_done;
2895 }
2896
2897 INIT_LIST_HEAD(&rxbmp->list);
2898 rxbpl = (struct ulp_bde64 *) rxbmp->virt;
2899 dmp = diag_cmd_data_alloc(phba, rxbpl,
2900 bde->tus.f.bdeSize, 0);
2901 if (!dmp) {
2902 rc = -ENOMEM;
2903 goto job_done;
2904 }
2905
2906 INIT_LIST_HEAD(&dmp->dma.list);
2907 bde->addrHigh = putPaddrHigh(dmp->dma.phys);
2908 bde->addrLow = putPaddrLow(dmp->dma.phys);
2909
2910 /* copy the transmit data found in the mailbox
2911 * extension area
2912 */
2913 from = (uint8_t *)mb;
2914 from += sizeof(MAILBOX_t);
2915 memcpy((uint8_t *)dmp->dma.virt, from,
2916 bde->tus.f.bdeSize);
2917 }
2918 }
2919
2920 dd_data->context_un.mbox.rxbmp = rxbmp;
2921 dd_data->context_un.mbox.dmp = dmp;
2922
2923 /* setup wake call as IOCB callback */
2924 pmboxq->mbox_cmpl = lpfc_bsg_wake_mbox_wait;
2925
2926 /* setup context field to pass wait_queue pointer to wake function */
2927 pmboxq->context1 = dd_data;
2928 dd_data->type = TYPE_MBOX;
2929 dd_data->context_un.mbox.pmboxq = pmboxq;
2930 dd_data->context_un.mbox.mb = mb;
2931 dd_data->context_un.mbox.set_job = job;
2932 dd_data->context_un.mbox.ext = ext;
2933 dd_data->context_un.mbox.mbOffset = mbox_req->mbOffset;
2934 dd_data->context_un.mbox.inExtWLen = mbox_req->inExtWLen;
2935 dd_data->context_un.mbox.outExtWLen = mbox_req->outExtWLen;
2936 job->dd_data = dd_data;
2937
2938 if ((vport->fc_flag & FC_OFFLINE_MODE) ||
2939 (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE))) {
2940 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
2941 if (rc != MBX_SUCCESS) {
2942 rc = (rc == MBX_TIMEOUT) ? -ETIME : -ENODEV;
2943 goto job_done;
2944 }
2945
2946 /* job finished, copy the data */
2947 memcpy(mb, pmb, sizeof(*pmb));
2948 job->reply->reply_payload_rcv_len =
2949 sg_copy_from_buffer(job->reply_payload.sg_list,
2950 job->reply_payload.sg_cnt,
2951 mb, size);
2952 /* not waiting mbox already done */
2953 rc = 0;
2954 goto job_done;
2955 }
2956
2957 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
2958 if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY))
2959 return 1; /* job started */
2960
2961 job_done:
2962 /* common exit for error or job completed inline */
2963 kfree(mb);
2964 if (pmboxq)
2965 mempool_free(pmboxq, phba->mbox_mem_pool);
2966 kfree(ext);
2967 if (dmp) {
2968 dma_free_coherent(&phba->pcidev->dev,
2969 dmp->size, dmp->dma.virt,
2970 dmp->dma.phys);
2971 kfree(dmp);
2972 }
2973 if (rxbmp) {
2974 lpfc_mbuf_free(phba, rxbmp->virt, rxbmp->phys);
2975 kfree(rxbmp);
2976 }
2977 kfree(dd_data);
2978
2979 return rc;
2980 }
2981
2982 /**
2983 * lpfc_bsg_mbox_cmd - process an fc bsg LPFC_BSG_VENDOR_MBOX command
2984 * @job: MBOX fc_bsg_job for LPFC_BSG_VENDOR_MBOX.
2985 **/
2986 static int
2987 lpfc_bsg_mbox_cmd(struct fc_bsg_job *job)
2988 {
2989 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
2990 struct lpfc_hba *phba = vport->phba;
2991 int rc = 0;
2992
2993 /* in case no data is transferred */
2994 job->reply->reply_payload_rcv_len = 0;
2995 if (job->request_len <
2996 sizeof(struct fc_bsg_request) + sizeof(struct dfc_mbox_req)) {
2997 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2998 "2737 Received MBOX_REQ request below "
2999 "minimum size\n");
3000 rc = -EINVAL;
3001 goto job_error;
3002 }
3003
3004 if (job->request_payload.payload_len != BSG_MBOX_SIZE) {
3005 rc = -EINVAL;
3006 goto job_error;
3007 }
3008
3009 if (job->reply_payload.payload_len != BSG_MBOX_SIZE) {
3010 rc = -EINVAL;
3011 goto job_error;
3012 }
3013
3014 if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) {
3015 rc = -EAGAIN;
3016 goto job_error;
3017 }
3018
3019 rc = lpfc_bsg_issue_mbox(phba, job, vport);
3020
3021 job_error:
3022 if (rc == 0) {
3023 /* job done */
3024 job->reply->result = 0;
3025 job->dd_data = NULL;
3026 job->job_done(job);
3027 } else if (rc == 1)
3028 /* job submitted, will complete later*/
3029 rc = 0; /* return zero, no error */
3030 else {
3031 /* some error occurred */
3032 job->reply->result = rc;
3033 job->dd_data = NULL;
3034 }
3035
3036 return rc;
3037 }
3038
3039 /**
3040 * lpfc_bsg_menlo_cmd_cmp - lpfc_menlo_cmd completion handler
3041 * @phba: Pointer to HBA context object.
3042 * @cmdiocbq: Pointer to command iocb.
3043 * @rspiocbq: Pointer to response iocb.
3044 *
3045 * This function is the completion handler for iocbs issued using
3046 * lpfc_menlo_cmd function. This function is called by the
3047 * ring event handler function without any lock held. This function
3048 * can be called from both worker thread context and interrupt
3049 * context. This function also can be called from another thread which
3050 * cleans up the SLI layer objects.
3051 * This function copies the contents of the response iocb to the
3052 * response iocb memory object provided by the caller of
3053 * lpfc_sli_issue_iocb_wait and then wakes up the thread which
3054 * sleeps for the iocb completion.
3055 **/
3056 static void
3057 lpfc_bsg_menlo_cmd_cmp(struct lpfc_hba *phba,
3058 struct lpfc_iocbq *cmdiocbq,
3059 struct lpfc_iocbq *rspiocbq)
3060 {
3061 struct bsg_job_data *dd_data;
3062 struct fc_bsg_job *job;
3063 IOCB_t *rsp;
3064 struct lpfc_dmabuf *bmp;
3065 struct lpfc_bsg_menlo *menlo;
3066 unsigned long flags;
3067 struct menlo_response *menlo_resp;
3068 int rc = 0;
3069
3070 spin_lock_irqsave(&phba->ct_ev_lock, flags);
3071 dd_data = cmdiocbq->context1;
3072 if (!dd_data) {
3073 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3074 return;
3075 }
3076
3077 menlo = &dd_data->context_un.menlo;
3078 job = menlo->set_job;
3079 job->dd_data = NULL; /* so timeout handler does not reply */
3080
3081 spin_lock_irqsave(&phba->hbalock, flags);
3082 cmdiocbq->iocb_flag |= LPFC_IO_WAKE;
3083 if (cmdiocbq->context2 && rspiocbq)
3084 memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb,
3085 &rspiocbq->iocb, sizeof(IOCB_t));
3086 spin_unlock_irqrestore(&phba->hbalock, flags);
3087
3088 bmp = menlo->bmp;
3089 rspiocbq = menlo->rspiocbq;
3090 rsp = &rspiocbq->iocb;
3091
3092 pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
3093 job->request_payload.sg_cnt, DMA_TO_DEVICE);
3094 pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list,
3095 job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
3096
3097 /* always return the xri, this would be used in the case
3098 * of a menlo download to allow the data to be sent as a continuation
3099 * of the exchange.
3100 */
3101 menlo_resp = (struct menlo_response *)
3102 job->reply->reply_data.vendor_reply.vendor_rsp;
3103 menlo_resp->xri = rsp->ulpContext;
3104 if (rsp->ulpStatus) {
3105 if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
3106 switch (rsp->un.ulpWord[4] & 0xff) {
3107 case IOERR_SEQUENCE_TIMEOUT:
3108 rc = -ETIMEDOUT;
3109 break;
3110 case IOERR_INVALID_RPI:
3111 rc = -EFAULT;
3112 break;
3113 default:
3114 rc = -EACCES;
3115 break;
3116 }
3117 } else
3118 rc = -EACCES;
3119 } else
3120 job->reply->reply_payload_rcv_len =
3121 rsp->un.genreq64.bdl.bdeSize;
3122
3123 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
3124 lpfc_sli_release_iocbq(phba, rspiocbq);
3125 lpfc_sli_release_iocbq(phba, cmdiocbq);
3126 kfree(bmp);
3127 kfree(dd_data);
3128 /* make error code available to userspace */
3129 job->reply->result = rc;
3130 /* complete the job back to userspace */
3131 job->job_done(job);
3132 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3133 return;
3134 }
3135
3136 /**
3137 * lpfc_menlo_cmd - send an ioctl for menlo hardware
3138 * @job: fc_bsg_job to handle
3139 *
3140 * This function issues a gen request 64 CR ioctl for all menlo cmd requests,
3141 * all the command completions will return the xri for the command.
3142 * For menlo data requests a gen request 64 CX is used to continue the exchange
3143 * supplied in the menlo request header xri field.
3144 **/
3145 static int
3146 lpfc_menlo_cmd(struct fc_bsg_job *job)
3147 {
3148 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
3149 struct lpfc_hba *phba = vport->phba;
3150 struct lpfc_iocbq *cmdiocbq, *rspiocbq;
3151 IOCB_t *cmd, *rsp;
3152 int rc = 0;
3153 struct menlo_command *menlo_cmd;
3154 struct menlo_response *menlo_resp;
3155 struct lpfc_dmabuf *bmp = NULL;
3156 int request_nseg;
3157 int reply_nseg;
3158 struct scatterlist *sgel = NULL;
3159 int numbde;
3160 dma_addr_t busaddr;
3161 struct bsg_job_data *dd_data;
3162 struct ulp_bde64 *bpl = NULL;
3163
3164 /* in case no data is returned return just the return code */
3165 job->reply->reply_payload_rcv_len = 0;
3166
3167 if (job->request_len <
3168 sizeof(struct fc_bsg_request) +
3169 sizeof(struct menlo_command)) {
3170 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3171 "2784 Received MENLO_CMD request below "
3172 "minimum size\n");
3173 rc = -ERANGE;
3174 goto no_dd_data;
3175 }
3176
3177 if (job->reply_len <
3178 sizeof(struct fc_bsg_request) + sizeof(struct menlo_response)) {
3179 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3180 "2785 Received MENLO_CMD reply below "
3181 "minimum size\n");
3182 rc = -ERANGE;
3183 goto no_dd_data;
3184 }
3185
3186 if (!(phba->menlo_flag & HBA_MENLO_SUPPORT)) {
3187 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3188 "2786 Adapter does not support menlo "
3189 "commands\n");
3190 rc = -EPERM;
3191 goto no_dd_data;
3192 }
3193
3194 menlo_cmd = (struct menlo_command *)
3195 job->request->rqst_data.h_vendor.vendor_cmd;
3196
3197 menlo_resp = (struct menlo_response *)
3198 job->reply->reply_data.vendor_reply.vendor_rsp;
3199
3200 /* allocate our bsg tracking structure */
3201 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
3202 if (!dd_data) {
3203 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3204 "2787 Failed allocation of dd_data\n");
3205 rc = -ENOMEM;
3206 goto no_dd_data;
3207 }
3208
3209 bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
3210 if (!bmp) {
3211 rc = -ENOMEM;
3212 goto free_dd;
3213 }
3214
3215 cmdiocbq = lpfc_sli_get_iocbq(phba);
3216 if (!cmdiocbq) {
3217 rc = -ENOMEM;
3218 goto free_bmp;
3219 }
3220
3221 rspiocbq = lpfc_sli_get_iocbq(phba);
3222 if (!rspiocbq) {
3223 rc = -ENOMEM;
3224 goto free_cmdiocbq;
3225 }
3226
3227 rsp = &rspiocbq->iocb;
3228
3229 bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys);
3230 if (!bmp->virt) {
3231 rc = -ENOMEM;
3232 goto free_rspiocbq;
3233 }
3234
3235 INIT_LIST_HEAD(&bmp->list);
3236 bpl = (struct ulp_bde64 *) bmp->virt;
3237 request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list,
3238 job->request_payload.sg_cnt, DMA_TO_DEVICE);
3239 for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) {
3240 busaddr = sg_dma_address(sgel);
3241 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
3242 bpl->tus.f.bdeSize = sg_dma_len(sgel);
3243 bpl->tus.w = cpu_to_le32(bpl->tus.w);
3244 bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
3245 bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
3246 bpl++;
3247 }
3248
3249 reply_nseg = pci_map_sg(phba->pcidev, job->reply_payload.sg_list,
3250 job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
3251 for_each_sg(job->reply_payload.sg_list, sgel, reply_nseg, numbde) {
3252 busaddr = sg_dma_address(sgel);
3253 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
3254 bpl->tus.f.bdeSize = sg_dma_len(sgel);
3255 bpl->tus.w = cpu_to_le32(bpl->tus.w);
3256 bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
3257 bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
3258 bpl++;
3259 }
3260
3261 cmd = &cmdiocbq->iocb;
3262 cmd->un.genreq64.bdl.ulpIoTag32 = 0;
3263 cmd->un.genreq64.bdl.addrHigh = putPaddrHigh(bmp->phys);
3264 cmd->un.genreq64.bdl.addrLow = putPaddrLow(bmp->phys);
3265 cmd->un.genreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
3266 cmd->un.genreq64.bdl.bdeSize =
3267 (request_nseg + reply_nseg) * sizeof(struct ulp_bde64);
3268 cmd->un.genreq64.w5.hcsw.Fctl = (SI | LA);
3269 cmd->un.genreq64.w5.hcsw.Dfctl = 0;
3270 cmd->un.genreq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CMD;
3271 cmd->un.genreq64.w5.hcsw.Type = MENLO_TRANSPORT_TYPE; /* 0xfe */
3272 cmd->ulpBdeCount = 1;
3273 cmd->ulpClass = CLASS3;
3274 cmd->ulpOwner = OWN_CHIP;
3275 cmd->ulpLe = 1; /* Limited Edition */
3276 cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
3277 cmdiocbq->vport = phba->pport;
3278 /* We want the firmware to timeout before we do */
3279 cmd->ulpTimeout = MENLO_TIMEOUT - 5;
3280 cmdiocbq->context3 = bmp;
3281 cmdiocbq->context2 = rspiocbq;
3282 cmdiocbq->iocb_cmpl = lpfc_bsg_menlo_cmd_cmp;
3283 cmdiocbq->context1 = dd_data;
3284 cmdiocbq->context2 = rspiocbq;
3285 if (menlo_cmd->cmd == LPFC_BSG_VENDOR_MENLO_CMD) {
3286 cmd->ulpCommand = CMD_GEN_REQUEST64_CR;
3287 cmd->ulpPU = MENLO_PU; /* 3 */
3288 cmd->un.ulpWord[4] = MENLO_DID; /* 0x0000FC0E */
3289 cmd->ulpContext = MENLO_CONTEXT; /* 0 */
3290 } else {
3291 cmd->ulpCommand = CMD_GEN_REQUEST64_CX;
3292 cmd->ulpPU = 1;
3293 cmd->un.ulpWord[4] = 0;
3294 cmd->ulpContext = menlo_cmd->xri;
3295 }
3296
3297 dd_data->type = TYPE_MENLO;
3298 dd_data->context_un.menlo.cmdiocbq = cmdiocbq;
3299 dd_data->context_un.menlo.rspiocbq = rspiocbq;
3300 dd_data->context_un.menlo.set_job = job;
3301 dd_data->context_un.menlo.bmp = bmp;
3302
3303 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq,
3304 MENLO_TIMEOUT - 5);
3305 if (rc == IOCB_SUCCESS)
3306 return 0; /* done for now */
3307
3308 /* iocb failed so cleanup */
3309 pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
3310 job->request_payload.sg_cnt, DMA_TO_DEVICE);
3311 pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list,
3312 job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
3313
3314 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
3315
3316 free_rspiocbq:
3317 lpfc_sli_release_iocbq(phba, rspiocbq);
3318 free_cmdiocbq:
3319 lpfc_sli_release_iocbq(phba, cmdiocbq);
3320 free_bmp:
3321 kfree(bmp);
3322 free_dd:
3323 kfree(dd_data);
3324 no_dd_data:
3325 /* make error code available to userspace */
3326 job->reply->result = rc;
3327 job->dd_data = NULL;
3328 return rc;
3329 }
3330 /**
3331 * lpfc_bsg_hst_vendor - process a vendor-specific fc_bsg_job
3332 * @job: fc_bsg_job to handle
3333 **/
3334 static int
3335 lpfc_bsg_hst_vendor(struct fc_bsg_job *job)
3336 {
3337 int command = job->request->rqst_data.h_vendor.vendor_cmd[0];
3338 int rc;
3339
3340 switch (command) {
3341 case LPFC_BSG_VENDOR_SET_CT_EVENT:
3342 rc = lpfc_bsg_hba_set_event(job);
3343 break;
3344 case LPFC_BSG_VENDOR_GET_CT_EVENT:
3345 rc = lpfc_bsg_hba_get_event(job);
3346 break;
3347 case LPFC_BSG_VENDOR_SEND_MGMT_RESP:
3348 rc = lpfc_bsg_send_mgmt_rsp(job);
3349 break;
3350 case LPFC_BSG_VENDOR_DIAG_MODE:
3351 rc = lpfc_bsg_diag_mode(job);
3352 break;
3353 case LPFC_BSG_VENDOR_DIAG_TEST:
3354 rc = lpfc_bsg_diag_test(job);
3355 break;
3356 case LPFC_BSG_VENDOR_GET_MGMT_REV:
3357 rc = lpfc_bsg_get_dfc_rev(job);
3358 break;
3359 case LPFC_BSG_VENDOR_MBOX:
3360 rc = lpfc_bsg_mbox_cmd(job);
3361 break;
3362 case LPFC_BSG_VENDOR_MENLO_CMD:
3363 case LPFC_BSG_VENDOR_MENLO_DATA:
3364 rc = lpfc_menlo_cmd(job);
3365 break;
3366 default:
3367 rc = -EINVAL;
3368 job->reply->reply_payload_rcv_len = 0;
3369 /* make error code available to userspace */
3370 job->reply->result = rc;
3371 break;
3372 }
3373
3374 return rc;
3375 }
3376
3377 /**
3378 * lpfc_bsg_request - handle a bsg request from the FC transport
3379 * @job: fc_bsg_job to handle
3380 **/
3381 int
3382 lpfc_bsg_request(struct fc_bsg_job *job)
3383 {
3384 uint32_t msgcode;
3385 int rc;
3386
3387 msgcode = job->request->msgcode;
3388 switch (msgcode) {
3389 case FC_BSG_HST_VENDOR:
3390 rc = lpfc_bsg_hst_vendor(job);
3391 break;
3392 case FC_BSG_RPT_ELS:
3393 rc = lpfc_bsg_rport_els(job);
3394 break;
3395 case FC_BSG_RPT_CT:
3396 rc = lpfc_bsg_send_mgmt_cmd(job);
3397 break;
3398 default:
3399 rc = -EINVAL;
3400 job->reply->reply_payload_rcv_len = 0;
3401 /* make error code available to userspace */
3402 job->reply->result = rc;
3403 break;
3404 }
3405
3406 return rc;
3407 }
3408
3409 /**
3410 * lpfc_bsg_timeout - handle timeout of a bsg request from the FC transport
3411 * @job: fc_bsg_job that has timed out
3412 *
3413 * This function just aborts the job's IOCB. The aborted IOCB will return to
3414 * the waiting function which will handle passing the error back to userspace
3415 **/
3416 int
3417 lpfc_bsg_timeout(struct fc_bsg_job *job)
3418 {
3419 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
3420 struct lpfc_hba *phba = vport->phba;
3421 struct lpfc_iocbq *cmdiocb;
3422 struct lpfc_bsg_event *evt;
3423 struct lpfc_bsg_iocb *iocb;
3424 struct lpfc_bsg_mbox *mbox;
3425 struct lpfc_bsg_menlo *menlo;
3426 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
3427 struct bsg_job_data *dd_data;
3428 unsigned long flags;
3429
3430 spin_lock_irqsave(&phba->ct_ev_lock, flags);
3431 dd_data = (struct bsg_job_data *)job->dd_data;
3432 /* timeout and completion crossed paths if no dd_data */
3433 if (!dd_data) {
3434 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3435 return 0;
3436 }
3437
3438 switch (dd_data->type) {
3439 case TYPE_IOCB:
3440 iocb = &dd_data->context_un.iocb;
3441 cmdiocb = iocb->cmdiocbq;
3442 /* hint to completion handler that the job timed out */
3443 job->reply->result = -EAGAIN;
3444 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3445 /* this will call our completion handler */
3446 spin_lock_irq(&phba->hbalock);
3447 lpfc_sli_issue_abort_iotag(phba, pring, cmdiocb);
3448 spin_unlock_irq(&phba->hbalock);
3449 break;
3450 case TYPE_EVT:
3451 evt = dd_data->context_un.evt;
3452 /* this event has no job anymore */
3453 evt->set_job = NULL;
3454 job->dd_data = NULL;
3455 job->reply->reply_payload_rcv_len = 0;
3456 /* Return -EAGAIN which is our way of signallying the
3457 * app to retry.
3458 */
3459 job->reply->result = -EAGAIN;
3460 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3461 job->job_done(job);
3462 break;
3463 case TYPE_MBOX:
3464 mbox = &dd_data->context_un.mbox;
3465 /* this mbox has no job anymore */
3466 mbox->set_job = NULL;
3467 job->dd_data = NULL;
3468 job->reply->reply_payload_rcv_len = 0;
3469 job->reply->result = -EAGAIN;
3470 /* the mbox completion handler can now be run */
3471 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3472 job->job_done(job);
3473 break;
3474 case TYPE_MENLO:
3475 menlo = &dd_data->context_un.menlo;
3476 cmdiocb = menlo->cmdiocbq;
3477 /* hint to completion handler that the job timed out */
3478 job->reply->result = -EAGAIN;
3479 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3480 /* this will call our completion handler */
3481 spin_lock_irq(&phba->hbalock);
3482 lpfc_sli_issue_abort_iotag(phba, pring, cmdiocb);
3483 spin_unlock_irq(&phba->hbalock);
3484 break;
3485 default:
3486 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3487 break;
3488 }
3489
3490 /* scsi transport fc fc_bsg_job_timeout expects a zero return code,
3491 * otherwise an error message will be displayed on the console
3492 * so always return success (zero)
3493 */
3494 return 0;
3495 }
Linux kernel - Deliverables
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