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GUI: Fix Tomato RAF theme for all builds. Compilation typo.
[tomato.git] / release / src-rt-6.x.4708 / linux / linux-2.6.36 / drivers / scsi / lpfc / lpfc_bsg.c
blob49d0cf99c24c0194783d235a4ab143567e378f63
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
263 /* in case no data is transferred */
264 job->reply->reply_payload_rcv_len = 0;
265
266 /* allocate our bsg tracking structure */
267 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
268 if (!dd_data) {
269 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
270 "2733 Failed allocation of dd_data\n");
271 rc = -ENOMEM;
272 goto no_dd_data;
273 }
274
275 if (!lpfc_nlp_get(ndlp)) {
276 rc = -ENODEV;
277 goto no_ndlp;
278 }
279
280 bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
281 if (!bmp) {
282 rc = -ENOMEM;
283 goto free_ndlp;
284 }
285
286 if (ndlp->nlp_flag & NLP_ELS_SND_MASK) {
287 rc = -ENODEV;
288 goto free_bmp;
289 }
290
291 cmdiocbq = lpfc_sli_get_iocbq(phba);
292 if (!cmdiocbq) {
293 rc = -ENOMEM;
294 goto free_bmp;
295 }
296
297 cmd = &cmdiocbq->iocb;
298 rspiocbq = lpfc_sli_get_iocbq(phba);
299 if (!rspiocbq) {
300 rc = -ENOMEM;
301 goto free_cmdiocbq;
302 }
303
304 rsp = &rspiocbq->iocb;
305 bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys);
306 if (!bmp->virt) {
307 rc = -ENOMEM;
308 goto free_rspiocbq;
309 }
310
311 INIT_LIST_HEAD(&bmp->list);
312 bpl = (struct ulp_bde64 *) bmp->virt;
313 request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list,
314 job->request_payload.sg_cnt, DMA_TO_DEVICE);
315 for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) {
316 busaddr = sg_dma_address(sgel);
317 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
318 bpl->tus.f.bdeSize = sg_dma_len(sgel);
319 bpl->tus.w = cpu_to_le32(bpl->tus.w);
320 bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
321 bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
322 bpl++;
323 }
324
325 reply_nseg = pci_map_sg(phba->pcidev, job->reply_payload.sg_list,
326 job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
327 for_each_sg(job->reply_payload.sg_list, sgel, reply_nseg, numbde) {
328 busaddr = sg_dma_address(sgel);
329 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
330 bpl->tus.f.bdeSize = sg_dma_len(sgel);
331 bpl->tus.w = cpu_to_le32(bpl->tus.w);
332 bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
333 bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
334 bpl++;
335 }
336
337 cmd->un.genreq64.bdl.ulpIoTag32 = 0;
338 cmd->un.genreq64.bdl.addrHigh = putPaddrHigh(bmp->phys);
339 cmd->un.genreq64.bdl.addrLow = putPaddrLow(bmp->phys);
340 cmd->un.genreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
341 cmd->un.genreq64.bdl.bdeSize =
342 (request_nseg + reply_nseg) * sizeof(struct ulp_bde64);
343 cmd->ulpCommand = CMD_GEN_REQUEST64_CR;
344 cmd->un.genreq64.w5.hcsw.Fctl = (SI | LA);
345 cmd->un.genreq64.w5.hcsw.Dfctl = 0;
346 cmd->un.genreq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL;
347 cmd->un.genreq64.w5.hcsw.Type = FC_TYPE_CT;
348 cmd->ulpBdeCount = 1;
349 cmd->ulpLe = 1;
350 cmd->ulpClass = CLASS3;
351 cmd->ulpContext = ndlp->nlp_rpi;
352 cmd->ulpOwner = OWN_CHIP;
353 cmdiocbq->vport = phba->pport;
354 cmdiocbq->context3 = bmp;
355 cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
356 timeout = phba->fc_ratov * 2;
357 cmd->ulpTimeout = timeout;
358
359 cmdiocbq->iocb_cmpl = lpfc_bsg_send_mgmt_cmd_cmp;
360 cmdiocbq->context1 = dd_data;
361 cmdiocbq->context2 = rspiocbq;
362 dd_data->type = TYPE_IOCB;
363 dd_data->context_un.iocb.cmdiocbq = cmdiocbq;
364 dd_data->context_un.iocb.rspiocbq = rspiocbq;
365 dd_data->context_un.iocb.set_job = job;
366 dd_data->context_un.iocb.bmp = bmp;
367 dd_data->context_un.iocb.ndlp = ndlp;
368
369 if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
370 creg_val = readl(phba->HCregaddr);
371 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
372 writel(creg_val, phba->HCregaddr);
373 readl(phba->HCregaddr); /* flush */
374 }
375
376 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0);
377
378 if (rc == IOCB_SUCCESS)
379 return 0; /* done for now */
380 else if (rc == 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 status = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
1664
1665 if ((status != MBX_SUCCESS) || (mbox->u.mb.mbxStatus)) {
1666 lpfc_mbuf_free(phba, dmabuff->virt, dmabuff->phys);
1667 kfree(dmabuff);
1668 if (status != MBX_TIMEOUT)
1669 mempool_free(mbox, phba->mbox_mem_pool);
1670 return ENODEV;
1671 }
1672
1673 *rpi = mbox->u.mb.un.varWords[0];
1674
1675 lpfc_mbuf_free(phba, dmabuff->virt, dmabuff->phys);
1676 kfree(dmabuff);
1677 mempool_free(mbox, phba->mbox_mem_pool);
1678 return 0;
1679 }
1680
1681 /**
1682 * lpfcdiag_loop_self_unreg - unregs from the rpi
1683 * @phba: Pointer to HBA context object
1684 * @rpi: Remote port login id
1685 *
1686 * This function unregisters the rpi obtained in lpfcdiag_loop_self_reg
1687 **/
1688 static int lpfcdiag_loop_self_unreg(struct lpfc_hba *phba, uint16_t rpi)
1689 {
1690 LPFC_MBOXQ_t *mbox;
1691 int status;
1692
1693 /* Allocate mboxq structure */
1694 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1695 if (mbox == NULL)
1696 return ENOMEM;
1697
1698 lpfc_unreg_login(phba, 0, rpi, mbox);
1699 status = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
1700
1701 if ((status != MBX_SUCCESS) || (mbox->u.mb.mbxStatus)) {
1702 if (status != MBX_TIMEOUT)
1703 mempool_free(mbox, phba->mbox_mem_pool);
1704 return EIO;
1705 }
1706
1707 mempool_free(mbox, phba->mbox_mem_pool);
1708 return 0;
1709 }
1710
1711 /**
1712 * lpfcdiag_loop_get_xri - obtains the transmit and receive ids
1713 * @phba: Pointer to HBA context object
1714 * @rpi: Remote port login id
1715 * @txxri: Pointer to transmit exchange id
1716 * @rxxri: Pointer to response exchabge id
1717 *
1718 * This function obtains the transmit and receive ids required to send
1719 * an unsolicited ct command with a payload. A special lpfc FsType and CmdRsp
1720 * flags are used to the unsolicted response handler is able to process
1721 * the ct command sent on the same port.
1722 **/
1723 static int lpfcdiag_loop_get_xri(struct lpfc_hba *phba, uint16_t rpi,
1724 uint16_t *txxri, uint16_t * rxxri)
1725 {
1726 struct lpfc_bsg_event *evt;
1727 struct lpfc_iocbq *cmdiocbq, *rspiocbq;
1728 IOCB_t *cmd, *rsp;
1729 struct lpfc_dmabuf *dmabuf;
1730 struct ulp_bde64 *bpl = NULL;
1731 struct lpfc_sli_ct_request *ctreq = NULL;
1732 int ret_val = 0;
1733 unsigned long flags;
1734
1735 *txxri = 0;
1736 *rxxri = 0;
1737 evt = lpfc_bsg_event_new(FC_REG_CT_EVENT, current->pid,
1738 SLI_CT_ELX_LOOPBACK);
1739 if (!evt)
1740 return ENOMEM;
1741
1742 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1743 list_add(&evt->node, &phba->ct_ev_waiters);
1744 lpfc_bsg_event_ref(evt);
1745 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1746
1747 cmdiocbq = lpfc_sli_get_iocbq(phba);
1748 rspiocbq = lpfc_sli_get_iocbq(phba);
1749
1750 dmabuf = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
1751 if (dmabuf) {
1752 dmabuf->virt = lpfc_mbuf_alloc(phba, 0, &dmabuf->phys);
1753 if (dmabuf->virt) {
1754 INIT_LIST_HEAD(&dmabuf->list);
1755 bpl = (struct ulp_bde64 *) dmabuf->virt;
1756 memset(bpl, 0, sizeof(*bpl));
1757 ctreq = (struct lpfc_sli_ct_request *)(bpl + 1);
1758 bpl->addrHigh =
1759 le32_to_cpu(putPaddrHigh(dmabuf->phys +
1760 sizeof(*bpl)));
1761 bpl->addrLow =
1762 le32_to_cpu(putPaddrLow(dmabuf->phys +
1763 sizeof(*bpl)));
1764 bpl->tus.f.bdeFlags = 0;
1765 bpl->tus.f.bdeSize = ELX_LOOPBACK_HEADER_SZ;
1766 bpl->tus.w = le32_to_cpu(bpl->tus.w);
1767 }
1768 }
1769
1770 if (cmdiocbq == NULL || rspiocbq == NULL ||
1771 dmabuf == NULL || bpl == NULL || ctreq == NULL ||
1772 dmabuf->virt == NULL) {
1773 ret_val = ENOMEM;
1774 goto err_get_xri_exit;
1775 }
1776
1777 cmd = &cmdiocbq->iocb;
1778 rsp = &rspiocbq->iocb;
1779
1780 memset(ctreq, 0, ELX_LOOPBACK_HEADER_SZ);
1781
1782 ctreq->RevisionId.bits.Revision = SLI_CT_REVISION;
1783 ctreq->RevisionId.bits.InId = 0;
1784 ctreq->FsType = SLI_CT_ELX_LOOPBACK;
1785 ctreq->FsSubType = 0;
1786 ctreq->CommandResponse.bits.CmdRsp = ELX_LOOPBACK_XRI_SETUP;
1787 ctreq->CommandResponse.bits.Size = 0;
1788
1789
1790 cmd->un.xseq64.bdl.addrHigh = putPaddrHigh(dmabuf->phys);
1791 cmd->un.xseq64.bdl.addrLow = putPaddrLow(dmabuf->phys);
1792 cmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
1793 cmd->un.xseq64.bdl.bdeSize = sizeof(*bpl);
1794
1795 cmd->un.xseq64.w5.hcsw.Fctl = LA;
1796 cmd->un.xseq64.w5.hcsw.Dfctl = 0;
1797 cmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL;
1798 cmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT;
1799
1800 cmd->ulpCommand = CMD_XMIT_SEQUENCE64_CR;
1801 cmd->ulpBdeCount = 1;
1802 cmd->ulpLe = 1;
1803 cmd->ulpClass = CLASS3;
1804 cmd->ulpContext = rpi;
1805
1806 cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
1807 cmdiocbq->vport = phba->pport;
1808
1809 ret_val = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq,
1810 rspiocbq,
1811 (phba->fc_ratov * 2)
1812 + LPFC_DRVR_TIMEOUT);
1813 if (ret_val)
1814 goto err_get_xri_exit;
1815
1816 *txxri = rsp->ulpContext;
1817
1818 evt->waiting = 1;
1819 evt->wait_time_stamp = jiffies;
1820 ret_val = wait_event_interruptible_timeout(
1821 evt->wq, !list_empty(&evt->events_to_see),
1822 ((phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT) * HZ);
1823 if (list_empty(&evt->events_to_see))
1824 ret_val = (ret_val) ? EINTR : ETIMEDOUT;
1825 else {
1826 ret_val = IOCB_SUCCESS;
1827 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1828 list_move(evt->events_to_see.prev, &evt->events_to_get);
1829 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1830 *rxxri = (list_entry(evt->events_to_get.prev,
1831 typeof(struct event_data),
1832 node))->immed_dat;
1833 }
1834 evt->waiting = 0;
1835
1836 err_get_xri_exit:
1837 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1838 lpfc_bsg_event_unref(evt); /* release ref */
1839 lpfc_bsg_event_unref(evt); /* delete */
1840 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1841
1842 if (dmabuf) {
1843 if (dmabuf->virt)
1844 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
1845 kfree(dmabuf);
1846 }
1847
1848 if (cmdiocbq && (ret_val != IOCB_TIMEDOUT))
1849 lpfc_sli_release_iocbq(phba, cmdiocbq);
1850 if (rspiocbq)
1851 lpfc_sli_release_iocbq(phba, rspiocbq);
1852 return ret_val;
1853 }
1854
1855 /**
1856 * diag_cmd_data_alloc - fills in a bde struct with dma buffers
1857 * @phba: Pointer to HBA context object
1858 * @bpl: Pointer to 64 bit bde structure
1859 * @size: Number of bytes to process
1860 * @nocopydata: Flag to copy user data into the allocated buffer
1861 *
1862 * This function allocates page size buffers and populates an lpfc_dmabufext.
1863 * If allowed the user data pointed to with indataptr is copied into the kernel
1864 * memory. The chained list of page size buffers is returned.
1865 **/
1866 static struct lpfc_dmabufext *
1867 diag_cmd_data_alloc(struct lpfc_hba *phba,
1868 struct ulp_bde64 *bpl, uint32_t size,
1869 int nocopydata)
1870 {
1871 struct lpfc_dmabufext *mlist = NULL;
1872 struct lpfc_dmabufext *dmp;
1873 int cnt, offset = 0, i = 0;
1874 struct pci_dev *pcidev;
1875
1876 pcidev = phba->pcidev;
1877
1878 while (size) {
1879 /* We get chunks of 4K */
1880 if (size > BUF_SZ_4K)
1881 cnt = BUF_SZ_4K;
1882 else
1883 cnt = size;
1884
1885 /* allocate struct lpfc_dmabufext buffer header */
1886 dmp = kmalloc(sizeof(struct lpfc_dmabufext), GFP_KERNEL);
1887 if (!dmp)
1888 goto out;
1889
1890 INIT_LIST_HEAD(&dmp->dma.list);
1891
1892 /* Queue it to a linked list */
1893 if (mlist)
1894 list_add_tail(&dmp->dma.list, &mlist->dma.list);
1895 else
1896 mlist = dmp;
1897
1898 /* allocate buffer */
1899 dmp->dma.virt = dma_alloc_coherent(&pcidev->dev,
1900 cnt,
1901 &(dmp->dma.phys),
1902 GFP_KERNEL);
1903
1904 if (!dmp->dma.virt)
1905 goto out;
1906
1907 dmp->size = cnt;
1908
1909 if (nocopydata) {
1910 bpl->tus.f.bdeFlags = 0;
1911 pci_dma_sync_single_for_device(phba->pcidev,
1912 dmp->dma.phys, LPFC_BPL_SIZE, PCI_DMA_TODEVICE);
1913
1914 } else {
1915 memset((uint8_t *)dmp->dma.virt, 0, cnt);
1916 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
1917 }
1918
1919 /* build buffer ptr list for IOCB */
1920 bpl->addrLow = le32_to_cpu(putPaddrLow(dmp->dma.phys));
1921 bpl->addrHigh = le32_to_cpu(putPaddrHigh(dmp->dma.phys));
1922 bpl->tus.f.bdeSize = (ushort) cnt;
1923 bpl->tus.w = le32_to_cpu(bpl->tus.w);
1924 bpl++;
1925
1926 i++;
1927 offset += cnt;
1928 size -= cnt;
1929 }
1930
1931 mlist->flag = i;
1932 return mlist;
1933 out:
1934 diag_cmd_data_free(phba, mlist);
1935 return NULL;
1936 }
1937
1938 /**
1939 * lpfcdiag_loop_post_rxbufs - post the receive buffers for an unsol CT cmd
1940 * @phba: Pointer to HBA context object
1941 * @rxxri: Receive exchange id
1942 * @len: Number of data bytes
1943 *
1944 * This function allocates and posts a data buffer of sufficient size to recieve
1945 * an unsolicted CT command.
1946 **/
1947 static int lpfcdiag_loop_post_rxbufs(struct lpfc_hba *phba, uint16_t rxxri,
1948 size_t len)
1949 {
1950 struct lpfc_sli *psli = &phba->sli;
1951 struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
1952 struct lpfc_iocbq *cmdiocbq;
1953 IOCB_t *cmd = NULL;
1954 struct list_head head, *curr, *next;
1955 struct lpfc_dmabuf *rxbmp;
1956 struct lpfc_dmabuf *dmp;
1957 struct lpfc_dmabuf *mp[2] = {NULL, NULL};
1958 struct ulp_bde64 *rxbpl = NULL;
1959 uint32_t num_bde;
1960 struct lpfc_dmabufext *rxbuffer = NULL;
1961 int ret_val = 0;
1962 int i = 0;
1963
1964 cmdiocbq = lpfc_sli_get_iocbq(phba);
1965 rxbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
1966 if (rxbmp != NULL) {
1967 rxbmp->virt = lpfc_mbuf_alloc(phba, 0, &rxbmp->phys);
1968 if (rxbmp->virt) {
1969 INIT_LIST_HEAD(&rxbmp->list);
1970 rxbpl = (struct ulp_bde64 *) rxbmp->virt;
1971 rxbuffer = diag_cmd_data_alloc(phba, rxbpl, len, 0);
1972 }
1973 }
1974
1975 if (!cmdiocbq || !rxbmp || !rxbpl || !rxbuffer) {
1976 ret_val = ENOMEM;
1977 goto err_post_rxbufs_exit;
1978 }
1979
1980 /* Queue buffers for the receive exchange */
1981 num_bde = (uint32_t)rxbuffer->flag;
1982 dmp = &rxbuffer->dma;
1983
1984 cmd = &cmdiocbq->iocb;
1985 i = 0;
1986
1987 INIT_LIST_HEAD(&head);
1988 list_add_tail(&head, &dmp->list);
1989 list_for_each_safe(curr, next, &head) {
1990 mp[i] = list_entry(curr, struct lpfc_dmabuf, list);
1991 list_del(curr);
1992
1993 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
1994 mp[i]->buffer_tag = lpfc_sli_get_buffer_tag(phba);
1995 cmd->un.quexri64cx.buff.bde.addrHigh =
1996 putPaddrHigh(mp[i]->phys);
1997 cmd->un.quexri64cx.buff.bde.addrLow =
1998 putPaddrLow(mp[i]->phys);
1999 cmd->un.quexri64cx.buff.bde.tus.f.bdeSize =
2000 ((struct lpfc_dmabufext *)mp[i])->size;
2001 cmd->un.quexri64cx.buff.buffer_tag = mp[i]->buffer_tag;
2002 cmd->ulpCommand = CMD_QUE_XRI64_CX;
2003 cmd->ulpPU = 0;
2004 cmd->ulpLe = 1;
2005 cmd->ulpBdeCount = 1;
2006 cmd->unsli3.que_xri64cx_ext_words.ebde_count = 0;
2007
2008 } else {
2009 cmd->un.cont64[i].addrHigh = putPaddrHigh(mp[i]->phys);
2010 cmd->un.cont64[i].addrLow = putPaddrLow(mp[i]->phys);
2011 cmd->un.cont64[i].tus.f.bdeSize =
2012 ((struct lpfc_dmabufext *)mp[i])->size;
2013 cmd->ulpBdeCount = ++i;
2014
2015 if ((--num_bde > 0) && (i < 2))
2016 continue;
2017
2018 cmd->ulpCommand = CMD_QUE_XRI_BUF64_CX;
2019 cmd->ulpLe = 1;
2020 }
2021
2022 cmd->ulpClass = CLASS3;
2023 cmd->ulpContext = rxxri;
2024
2025 ret_val = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0);
2026
2027 if (ret_val == IOCB_ERROR) {
2028 diag_cmd_data_free(phba,
2029 (struct lpfc_dmabufext *)mp[0]);
2030 if (mp[1])
2031 diag_cmd_data_free(phba,
2032 (struct lpfc_dmabufext *)mp[1]);
2033 dmp = list_entry(next, struct lpfc_dmabuf, list);
2034 ret_val = EIO;
2035 goto err_post_rxbufs_exit;
2036 }
2037
2038 lpfc_sli_ringpostbuf_put(phba, pring, mp[0]);
2039 if (mp[1]) {
2040 lpfc_sli_ringpostbuf_put(phba, pring, mp[1]);
2041 mp[1] = NULL;
2042 }
2043
2044 /* The iocb was freed by lpfc_sli_issue_iocb */
2045 cmdiocbq = lpfc_sli_get_iocbq(phba);
2046 if (!cmdiocbq) {
2047 dmp = list_entry(next, struct lpfc_dmabuf, list);
2048 ret_val = EIO;
2049 goto err_post_rxbufs_exit;
2050 }
2051
2052 cmd = &cmdiocbq->iocb;
2053 i = 0;
2054 }
2055 list_del(&head);
2056
2057 err_post_rxbufs_exit:
2058
2059 if (rxbmp) {
2060 if (rxbmp->virt)
2061 lpfc_mbuf_free(phba, rxbmp->virt, rxbmp->phys);
2062 kfree(rxbmp);
2063 }
2064
2065 if (cmdiocbq)
2066 lpfc_sli_release_iocbq(phba, cmdiocbq);
2067 return ret_val;
2068 }
2069
2070 /**
2071 * lpfc_bsg_diag_test - with a port in loopback issues a Ct cmd to itself
2072 * @job: LPFC_BSG_VENDOR_DIAG_TEST fc_bsg_job
2073 *
2074 * This function receives a user data buffer to be transmitted and received on
2075 * the same port, the link must be up and in loopback mode prior
2076 * to being called.
2077 * 1. A kernel buffer is allocated to copy the user data into.
2078 * 2. The port registers with "itself".
2079 * 3. The transmit and receive exchange ids are obtained.
2080 * 4. The receive exchange id is posted.
2081 * 5. A new els loopback event is created.
2082 * 6. The command and response iocbs are allocated.
2083 * 7. The cmd iocb FsType is set to elx loopback and the CmdRsp to looppback.
2084 *
2085 * This function is meant to be called n times while the port is in loopback
2086 * so it is the apps responsibility to issue a reset to take the port out
2087 * of loopback mode.
2088 **/
2089 static int
2090 lpfc_bsg_diag_test(struct fc_bsg_job *job)
2091 {
2092 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
2093 struct lpfc_hba *phba = vport->phba;
2094 struct diag_mode_test *diag_mode;
2095 struct lpfc_bsg_event *evt;
2096 struct event_data *evdat;
2097 struct lpfc_sli *psli = &phba->sli;
2098 uint32_t size;
2099 uint32_t full_size;
2100 size_t segment_len = 0, segment_offset = 0, current_offset = 0;
2101 uint16_t rpi;
2102 struct lpfc_iocbq *cmdiocbq, *rspiocbq;
2103 IOCB_t *cmd, *rsp;
2104 struct lpfc_sli_ct_request *ctreq;
2105 struct lpfc_dmabuf *txbmp;
2106 struct ulp_bde64 *txbpl = NULL;
2107 struct lpfc_dmabufext *txbuffer = NULL;
2108 struct list_head head;
2109 struct lpfc_dmabuf *curr;
2110 uint16_t txxri, rxxri;
2111 uint32_t num_bde;
2112 uint8_t *ptr = NULL, *rx_databuf = NULL;
2113 int rc = 0;
2114 unsigned long flags;
2115 void *dataout = NULL;
2116 uint32_t total_mem;
2117
2118 /* in case no data is returned return just the return code */
2119 job->reply->reply_payload_rcv_len = 0;
2120
2121 if (job->request_len <
2122 sizeof(struct fc_bsg_request) + sizeof(struct diag_mode_test)) {
2123 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2124 "2739 Received DIAG TEST request below minimum "
2125 "size\n");
2126 rc = -EINVAL;
2127 goto loopback_test_exit;
2128 }
2129
2130 if (job->request_payload.payload_len !=
2131 job->reply_payload.payload_len) {
2132 rc = -EINVAL;
2133 goto loopback_test_exit;
2134 }
2135
2136 diag_mode = (struct diag_mode_test *)
2137 job->request->rqst_data.h_vendor.vendor_cmd;
2138
2139 if ((phba->link_state == LPFC_HBA_ERROR) ||
2140 (psli->sli_flag & LPFC_BLOCK_MGMT_IO) ||
2141 (!(psli->sli_flag & LPFC_SLI_ACTIVE))) {
2142 rc = -EACCES;
2143 goto loopback_test_exit;
2144 }
2145
2146 if (!lpfc_is_link_up(phba) || !(phba->link_flag & LS_LOOPBACK_MODE)) {
2147 rc = -EACCES;
2148 goto loopback_test_exit;
2149 }
2150
2151 size = job->request_payload.payload_len;
2152 full_size = size + ELX_LOOPBACK_HEADER_SZ; /* plus the header */
2153
2154 if ((size == 0) || (size > 80 * BUF_SZ_4K)) {
2155 rc = -ERANGE;
2156 goto loopback_test_exit;
2157 }
2158
2159 if (size >= BUF_SZ_4K) {
2160 /*
2161 * Allocate memory for ioctl data. If buffer is bigger than 64k,
2162 * then we allocate 64k and re-use that buffer over and over to
2163 * xfer the whole block. This is because Linux kernel has a
2164 * problem allocating more than 120k of kernel space memory. Saw
2165 * problem with GET_FCPTARGETMAPPING...
2166 */
2167 if (size <= (64 * 1024))
2168 total_mem = size;
2169 else
2170 total_mem = 64 * 1024;
2171 } else
2172 /* Allocate memory for ioctl data */
2173 total_mem = BUF_SZ_4K;
2174
2175 dataout = kmalloc(total_mem, GFP_KERNEL);
2176 if (dataout == NULL) {
2177 rc = -ENOMEM;
2178 goto loopback_test_exit;
2179 }
2180
2181 ptr = dataout;
2182 ptr += ELX_LOOPBACK_HEADER_SZ;
2183 sg_copy_to_buffer(job->request_payload.sg_list,
2184 job->request_payload.sg_cnt,
2185 ptr, size);
2186
2187 rc = lpfcdiag_loop_self_reg(phba, &rpi);
2188 if (rc) {
2189 rc = -ENOMEM;
2190 goto loopback_test_exit;
2191 }
2192
2193 rc = lpfcdiag_loop_get_xri(phba, rpi, &txxri, &rxxri);
2194 if (rc) {
2195 lpfcdiag_loop_self_unreg(phba, rpi);
2196 rc = -ENOMEM;
2197 goto loopback_test_exit;
2198 }
2199
2200 rc = lpfcdiag_loop_post_rxbufs(phba, rxxri, full_size);
2201 if (rc) {
2202 lpfcdiag_loop_self_unreg(phba, rpi);
2203 rc = -ENOMEM;
2204 goto loopback_test_exit;
2205 }
2206
2207 evt = lpfc_bsg_event_new(FC_REG_CT_EVENT, current->pid,
2208 SLI_CT_ELX_LOOPBACK);
2209 if (!evt) {
2210 lpfcdiag_loop_self_unreg(phba, rpi);
2211 rc = -ENOMEM;
2212 goto loopback_test_exit;
2213 }
2214
2215 spin_lock_irqsave(&phba->ct_ev_lock, flags);
2216 list_add(&evt->node, &phba->ct_ev_waiters);
2217 lpfc_bsg_event_ref(evt);
2218 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2219
2220 cmdiocbq = lpfc_sli_get_iocbq(phba);
2221 rspiocbq = lpfc_sli_get_iocbq(phba);
2222 txbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2223
2224 if (txbmp) {
2225 txbmp->virt = lpfc_mbuf_alloc(phba, 0, &txbmp->phys);
2226 if (txbmp->virt) {
2227 INIT_LIST_HEAD(&txbmp->list);
2228 txbpl = (struct ulp_bde64 *) txbmp->virt;
2229 txbuffer = diag_cmd_data_alloc(phba,
2230 txbpl, full_size, 0);
2231 }
2232 }
2233
2234 if (!cmdiocbq || !rspiocbq || !txbmp || !txbpl || !txbuffer ||
2235 !txbmp->virt) {
2236 rc = -ENOMEM;
2237 goto err_loopback_test_exit;
2238 }
2239
2240 cmd = &cmdiocbq->iocb;
2241 rsp = &rspiocbq->iocb;
2242
2243 INIT_LIST_HEAD(&head);
2244 list_add_tail(&head, &txbuffer->dma.list);
2245 list_for_each_entry(curr, &head, list) {
2246 segment_len = ((struct lpfc_dmabufext *)curr)->size;
2247 if (current_offset == 0) {
2248 ctreq = curr->virt;
2249 memset(ctreq, 0, ELX_LOOPBACK_HEADER_SZ);
2250 ctreq->RevisionId.bits.Revision = SLI_CT_REVISION;
2251 ctreq->RevisionId.bits.InId = 0;
2252 ctreq->FsType = SLI_CT_ELX_LOOPBACK;
2253 ctreq->FsSubType = 0;
2254 ctreq->CommandResponse.bits.CmdRsp = ELX_LOOPBACK_DATA;
2255 ctreq->CommandResponse.bits.Size = size;
2256 segment_offset = ELX_LOOPBACK_HEADER_SZ;
2257 } else
2258 segment_offset = 0;
2259
2260 BUG_ON(segment_offset >= segment_len);
2261 memcpy(curr->virt + segment_offset,
2262 ptr + current_offset,
2263 segment_len - segment_offset);
2264
2265 current_offset += segment_len - segment_offset;
2266 BUG_ON(current_offset > size);
2267 }
2268 list_del(&head);
2269
2270 /* Build the XMIT_SEQUENCE iocb */
2271
2272 num_bde = (uint32_t)txbuffer->flag;
2273
2274 cmd->un.xseq64.bdl.addrHigh = putPaddrHigh(txbmp->phys);
2275 cmd->un.xseq64.bdl.addrLow = putPaddrLow(txbmp->phys);
2276 cmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
2277 cmd->un.xseq64.bdl.bdeSize = (num_bde * sizeof(struct ulp_bde64));
2278
2279 cmd->un.xseq64.w5.hcsw.Fctl = (LS | LA);
2280 cmd->un.xseq64.w5.hcsw.Dfctl = 0;
2281 cmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL;
2282 cmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT;
2283
2284 cmd->ulpCommand = CMD_XMIT_SEQUENCE64_CX;
2285 cmd->ulpBdeCount = 1;
2286 cmd->ulpLe = 1;
2287 cmd->ulpClass = CLASS3;
2288 cmd->ulpContext = txxri;
2289
2290 cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
2291 cmdiocbq->vport = phba->pport;
2292
2293 rc = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq, rspiocbq,
2294 (phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT);
2295
2296 if ((rc != IOCB_SUCCESS) || (rsp->ulpStatus != IOCB_SUCCESS)) {
2297 rc = -EIO;
2298 goto err_loopback_test_exit;
2299 }
2300
2301 evt->waiting = 1;
2302 rc = wait_event_interruptible_timeout(
2303 evt->wq, !list_empty(&evt->events_to_see),
2304 ((phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT) * HZ);
2305 evt->waiting = 0;
2306 if (list_empty(&evt->events_to_see))
2307 rc = (rc) ? -EINTR : -ETIMEDOUT;
2308 else {
2309 spin_lock_irqsave(&phba->ct_ev_lock, flags);
2310 list_move(evt->events_to_see.prev, &evt->events_to_get);
2311 evdat = list_entry(evt->events_to_get.prev,
2312 typeof(*evdat), node);
2313 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2314 rx_databuf = evdat->data;
2315 if (evdat->len != full_size) {
2316 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
2317 "1603 Loopback test did not receive expected "
2318 "data length. actual length 0x%x expected "
2319 "length 0x%x\n",
2320 evdat->len, full_size);
2321 rc = -EIO;
2322 } else if (rx_databuf == NULL)
2323 rc = -EIO;
2324 else {
2325 rc = IOCB_SUCCESS;
2326 /* skip over elx loopback header */
2327 rx_databuf += ELX_LOOPBACK_HEADER_SZ;
2328 job->reply->reply_payload_rcv_len =
2329 sg_copy_from_buffer(job->reply_payload.sg_list,
2330 job->reply_payload.sg_cnt,
2331 rx_databuf, size);
2332 job->reply->reply_payload_rcv_len = size;
2333 }
2334 }
2335
2336 err_loopback_test_exit:
2337 lpfcdiag_loop_self_unreg(phba, rpi);
2338
2339 spin_lock_irqsave(&phba->ct_ev_lock, flags);
2340 lpfc_bsg_event_unref(evt); /* release ref */
2341 lpfc_bsg_event_unref(evt); /* delete */
2342 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2343
2344 if (cmdiocbq != NULL)
2345 lpfc_sli_release_iocbq(phba, cmdiocbq);
2346
2347 if (rspiocbq != NULL)
2348 lpfc_sli_release_iocbq(phba, rspiocbq);
2349
2350 if (txbmp != NULL) {
2351 if (txbpl != NULL) {
2352 if (txbuffer != NULL)
2353 diag_cmd_data_free(phba, txbuffer);
2354 lpfc_mbuf_free(phba, txbmp->virt, txbmp->phys);
2355 }
2356 kfree(txbmp);
2357 }
2358
2359 loopback_test_exit:
2360 kfree(dataout);
2361 /* make error code available to userspace */
2362 job->reply->result = rc;
2363 job->dd_data = NULL;
2364 /* complete the job back to userspace if no error */
2365 if (rc == 0)
2366 job->job_done(job);
2367 return rc;
2368 }
2369
2370 /**
2371 * lpfc_bsg_get_dfc_rev - process a GET_DFC_REV bsg vendor command
2372 * @job: GET_DFC_REV fc_bsg_job
2373 **/
2374 static int
2375 lpfc_bsg_get_dfc_rev(struct fc_bsg_job *job)
2376 {
2377 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
2378 struct lpfc_hba *phba = vport->phba;
2379 struct get_mgmt_rev *event_req;
2380 struct get_mgmt_rev_reply *event_reply;
2381 int rc = 0;
2382
2383 if (job->request_len <
2384 sizeof(struct fc_bsg_request) + sizeof(struct get_mgmt_rev)) {
2385 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2386 "2740 Received GET_DFC_REV request below "
2387 "minimum size\n");
2388 rc = -EINVAL;
2389 goto job_error;
2390 }
2391
2392 event_req = (struct get_mgmt_rev *)
2393 job->request->rqst_data.h_vendor.vendor_cmd;
2394
2395 event_reply = (struct get_mgmt_rev_reply *)
2396 job->reply->reply_data.vendor_reply.vendor_rsp;
2397
2398 if (job->reply_len <
2399 sizeof(struct fc_bsg_request) + sizeof(struct get_mgmt_rev_reply)) {
2400 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2401 "2741 Received GET_DFC_REV reply below "
2402 "minimum size\n");
2403 rc = -EINVAL;
2404 goto job_error;
2405 }
2406
2407 event_reply->info.a_Major = MANAGEMENT_MAJOR_REV;
2408 event_reply->info.a_Minor = MANAGEMENT_MINOR_REV;
2409 job_error:
2410 job->reply->result = rc;
2411 if (rc == 0)
2412 job->job_done(job);
2413 return rc;
2414 }
2415
2416 /**
2417 * lpfc_bsg_wake_mbox_wait - lpfc_bsg_issue_mbox mbox completion handler
2418 * @phba: Pointer to HBA context object.
2419 * @pmboxq: Pointer to mailbox command.
2420 *
2421 * This is completion handler function for mailbox commands issued from
2422 * lpfc_bsg_issue_mbox function. This function is called by the
2423 * mailbox event handler function with no lock held. This function
2424 * will wake up thread waiting on the wait queue pointed by context1
2425 * of the mailbox.
2426 **/
2427 void
2428 lpfc_bsg_wake_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
2429 {
2430 struct bsg_job_data *dd_data;
2431 struct fc_bsg_job *job;
2432 uint32_t size;
2433 unsigned long flags;
2434 uint8_t *to;
2435 uint8_t *from;
2436
2437 spin_lock_irqsave(&phba->ct_ev_lock, flags);
2438 dd_data = pmboxq->context1;
2439 /* job already timed out? */
2440 if (!dd_data) {
2441 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2442 return;
2443 }
2444
2445 /* build the outgoing buffer to do an sg copy
2446 * the format is the response mailbox followed by any extended
2447 * mailbox data
2448 */
2449 from = (uint8_t *)&pmboxq->u.mb;
2450 to = (uint8_t *)dd_data->context_un.mbox.mb;
2451 memcpy(to, from, sizeof(MAILBOX_t));
2452 if (pmboxq->u.mb.mbxStatus == MBX_SUCCESS) {
2453 /* copy the extended data if any, count is in words */
2454 if (dd_data->context_un.mbox.outExtWLen) {
2455 from = (uint8_t *)dd_data->context_un.mbox.ext;
2456 to += sizeof(MAILBOX_t);
2457 size = dd_data->context_un.mbox.outExtWLen *
2458 sizeof(uint32_t);
2459 memcpy(to, from, size);
2460 } else if (pmboxq->u.mb.mbxCommand == MBX_RUN_BIU_DIAG64) {
2461 from = (uint8_t *)dd_data->context_un.mbox.
2462 dmp->dma.virt;
2463 to += sizeof(MAILBOX_t);
2464 size = dd_data->context_un.mbox.dmp->size;
2465 memcpy(to, from, size);
2466 } else if ((phba->sli_rev == LPFC_SLI_REV4) &&
2467 (pmboxq->u.mb.mbxCommand == MBX_DUMP_MEMORY)) {
2468 from = (uint8_t *)dd_data->context_un.mbox.dmp->dma.
2469 virt;
2470 to += sizeof(MAILBOX_t);
2471 size = pmboxq->u.mb.un.varWords[5];
2472 memcpy(to, from, size);
2473 } else if (pmboxq->u.mb.mbxCommand == MBX_READ_EVENT_LOG) {
2474 from = (uint8_t *)dd_data->context_un.
2475 mbox.dmp->dma.virt;
2476 to += sizeof(MAILBOX_t);
2477 size = dd_data->context_un.mbox.dmp->size;
2478 memcpy(to, from, size);
2479 }
2480 }
2481
2482 from = (uint8_t *)dd_data->context_un.mbox.mb;
2483 job = dd_data->context_un.mbox.set_job;
2484 size = job->reply_payload.payload_len;
2485 job->reply->reply_payload_rcv_len =
2486 sg_copy_from_buffer(job->reply_payload.sg_list,
2487 job->reply_payload.sg_cnt,
2488 from, size);
2489 job->reply->result = 0;
2490
2491 dd_data->context_un.mbox.set_job = NULL;
2492 job->dd_data = NULL;
2493 job->job_done(job);
2494 /* need to hold the lock until we call job done to hold off
2495 * the timeout handler returning to the midlayer while
2496 * we are stillprocessing the job
2497 */
2498 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2499
2500 kfree(dd_data->context_un.mbox.mb);
2501 mempool_free(dd_data->context_un.mbox.pmboxq, phba->mbox_mem_pool);
2502 kfree(dd_data->context_un.mbox.ext);
2503 if (dd_data->context_un.mbox.dmp) {
2504 dma_free_coherent(&phba->pcidev->dev,
2505 dd_data->context_un.mbox.dmp->size,
2506 dd_data->context_un.mbox.dmp->dma.virt,
2507 dd_data->context_un.mbox.dmp->dma.phys);
2508 kfree(dd_data->context_un.mbox.dmp);
2509 }
2510 if (dd_data->context_un.mbox.rxbmp) {
2511 lpfc_mbuf_free(phba, dd_data->context_un.mbox.rxbmp->virt,
2512 dd_data->context_un.mbox.rxbmp->phys);
2513 kfree(dd_data->context_un.mbox.rxbmp);
2514 }
2515 kfree(dd_data);
2516 return;
2517 }
2518
2519 /**
2520 * lpfc_bsg_check_cmd_access - test for a supported mailbox command
2521 * @phba: Pointer to HBA context object.
2522 * @mb: Pointer to a mailbox object.
2523 * @vport: Pointer to a vport object.
2524 *
2525 * Some commands require the port to be offline, some may not be called from
2526 * the application.
2527 **/
2528 static int lpfc_bsg_check_cmd_access(struct lpfc_hba *phba,
2529 MAILBOX_t *mb, struct lpfc_vport *vport)
2530 {
2531 /* return negative error values for bsg job */
2532 switch (mb->mbxCommand) {
2533 /* Offline only */
2534 case MBX_INIT_LINK:
2535 case MBX_DOWN_LINK:
2536 case MBX_CONFIG_LINK:
2537 case MBX_CONFIG_RING:
2538 case MBX_RESET_RING:
2539 case MBX_UNREG_LOGIN:
2540 case MBX_CLEAR_LA:
2541 case MBX_DUMP_CONTEXT:
2542 case MBX_RUN_DIAGS:
2543 case MBX_RESTART:
2544 case MBX_SET_MASK:
2545 if (!(vport->fc_flag & FC_OFFLINE_MODE)) {
2546 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2547 "2743 Command 0x%x is illegal in on-line "
2548 "state\n",
2549 mb->mbxCommand);
2550 return -EPERM;
2551 }
2552 case MBX_WRITE_NV:
2553 case MBX_WRITE_VPARMS:
2554 case MBX_LOAD_SM:
2555 case MBX_READ_NV:
2556 case MBX_READ_CONFIG:
2557 case MBX_READ_RCONFIG:
2558 case MBX_READ_STATUS:
2559 case MBX_READ_XRI:
2560 case MBX_READ_REV:
2561 case MBX_READ_LNK_STAT:
2562 case MBX_DUMP_MEMORY:
2563 case MBX_DOWN_LOAD:
2564 case MBX_UPDATE_CFG:
2565 case MBX_KILL_BOARD:
2566 case MBX_LOAD_AREA:
2567 case MBX_LOAD_EXP_ROM:
2568 case MBX_BEACON:
2569 case MBX_DEL_LD_ENTRY:
2570 case MBX_SET_DEBUG:
2571 case MBX_WRITE_WWN:
2572 case MBX_SLI4_CONFIG:
2573 case MBX_READ_EVENT_LOG:
2574 case MBX_READ_EVENT_LOG_STATUS:
2575 case MBX_WRITE_EVENT_LOG:
2576 case MBX_PORT_CAPABILITIES:
2577 case MBX_PORT_IOV_CONTROL:
2578 case MBX_RUN_BIU_DIAG64:
2579 break;
2580 case MBX_SET_VARIABLE:
2581 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2582 "1226 mbox: set_variable 0x%x, 0x%x\n",
2583 mb->un.varWords[0],
2584 mb->un.varWords[1]);
2585 if ((mb->un.varWords[0] == SETVAR_MLOMNT)
2586 && (mb->un.varWords[1] == 1)) {
2587 phba->wait_4_mlo_maint_flg = 1;
2588 } else if (mb->un.varWords[0] == SETVAR_MLORST) {
2589 phba->link_flag &= ~LS_LOOPBACK_MODE;
2590 phba->fc_topology = TOPOLOGY_PT_PT;
2591 }
2592 break;
2593 case MBX_READ_SPARM64:
2594 case MBX_READ_LA:
2595 case MBX_READ_LA64:
2596 case MBX_REG_LOGIN:
2597 case MBX_REG_LOGIN64:
2598 case MBX_CONFIG_PORT:
2599 case MBX_RUN_BIU_DIAG:
2600 default:
2601 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2602 "2742 Unknown Command 0x%x\n",
2603 mb->mbxCommand);
2604 return -EPERM;
2605 }
2606
2607 return 0; /* ok */
2608 }
2609
2610 /**
2611 * lpfc_bsg_issue_mbox - issues a mailbox command on behalf of an app
2612 * @phba: Pointer to HBA context object.
2613 * @mb: Pointer to a mailbox object.
2614 * @vport: Pointer to a vport object.
2615 *
2616 * Allocate a tracking object, mailbox command memory, get a mailbox
2617 * from the mailbox pool, copy the caller mailbox command.
2618 *
2619 * If offline and the sli is active we need to poll for the command (port is
2620 * being reset) and com-plete the job, otherwise issue the mailbox command and
2621 * let our completion handler finish the command.
2622 **/
2623 static uint32_t
2624 lpfc_bsg_issue_mbox(struct lpfc_hba *phba, struct fc_bsg_job *job,
2625 struct lpfc_vport *vport)
2626 {
2627 LPFC_MBOXQ_t *pmboxq = NULL; /* internal mailbox queue */
2628 MAILBOX_t *pmb; /* shortcut to the pmboxq mailbox */
2629 /* a 4k buffer to hold the mb and extended data from/to the bsg */
2630 MAILBOX_t *mb = NULL;
2631 struct bsg_job_data *dd_data = NULL; /* bsg data tracking structure */
2632 uint32_t size;
2633 struct lpfc_dmabuf *rxbmp = NULL; /* for biu diag */
2634 struct lpfc_dmabufext *dmp = NULL; /* for biu diag */
2635 struct ulp_bde64 *rxbpl = NULL;
2636 struct dfc_mbox_req *mbox_req = (struct dfc_mbox_req *)
2637 job->request->rqst_data.h_vendor.vendor_cmd;
2638 uint8_t *ext = NULL;
2639 int rc = 0;
2640 uint8_t *from;
2641
2642 /* in case no data is transferred */
2643 job->reply->reply_payload_rcv_len = 0;
2644
2645 /* check if requested extended data lengths are valid */
2646 if ((mbox_req->inExtWLen > MAILBOX_EXT_SIZE) ||
2647 (mbox_req->outExtWLen > MAILBOX_EXT_SIZE)) {
2648 rc = -ERANGE;
2649 goto job_done;
2650 }
2651
2652 /* allocate our bsg tracking structure */
2653 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
2654 if (!dd_data) {
2655 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2656 "2727 Failed allocation of dd_data\n");
2657 rc = -ENOMEM;
2658 goto job_done;
2659 }
2660
2661 mb = kzalloc(BSG_MBOX_SIZE, GFP_KERNEL);
2662 if (!mb) {
2663 rc = -ENOMEM;
2664 goto job_done;
2665 }
2666
2667 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2668 if (!pmboxq) {
2669 rc = -ENOMEM;
2670 goto job_done;
2671 }
2672 memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
2673
2674 size = job->request_payload.payload_len;
2675 sg_copy_to_buffer(job->request_payload.sg_list,
2676 job->request_payload.sg_cnt,
2677 mb, size);
2678
2679 rc = lpfc_bsg_check_cmd_access(phba, mb, vport);
2680 if (rc != 0)
2681 goto job_done; /* must be negative */
2682
2683 pmb = &pmboxq->u.mb;
2684 memcpy(pmb, mb, sizeof(*pmb));
2685 pmb->mbxOwner = OWN_HOST;
2686 pmboxq->vport = vport;
2687
2688 /* If HBA encountered an error attention, allow only DUMP
2689 * or RESTART mailbox commands until the HBA is restarted.
2690 */
2691 if (phba->pport->stopped &&
2692 pmb->mbxCommand != MBX_DUMP_MEMORY &&
2693 pmb->mbxCommand != MBX_RESTART &&
2694 pmb->mbxCommand != MBX_WRITE_VPARMS &&
2695 pmb->mbxCommand != MBX_WRITE_WWN)
2696 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX,
2697 "2797 mbox: Issued mailbox cmd "
2698 "0x%x while in stopped state.\n",
2699 pmb->mbxCommand);
2700
2701 /* Don't allow mailbox commands to be sent when blocked
2702 * or when in the middle of discovery
2703 */
2704 if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) {
2705 rc = -EAGAIN;
2706 goto job_done;
2707 }
2708
2709 /* extended mailbox commands will need an extended buffer */
2710 if (mbox_req->inExtWLen || mbox_req->outExtWLen) {
2711 ext = kzalloc(MAILBOX_EXT_SIZE, GFP_KERNEL);
2712 if (!ext) {
2713 rc = -ENOMEM;
2714 goto job_done;
2715 }
2716
2717 /* any data for the device? */
2718 if (mbox_req->inExtWLen) {
2719 from = (uint8_t *)mb;
2720 from += sizeof(MAILBOX_t);
2721 memcpy((uint8_t *)ext, from,
2722 mbox_req->inExtWLen * sizeof(uint32_t));
2723 }
2724
2725 pmboxq->context2 = ext;
2726 pmboxq->in_ext_byte_len =
2727 mbox_req->inExtWLen * sizeof(uint32_t);
2728 pmboxq->out_ext_byte_len =
2729 mbox_req->outExtWLen * sizeof(uint32_t);
2730 pmboxq->mbox_offset_word = mbox_req->mbOffset;
2731 }
2732
2733 /* biu diag will need a kernel buffer to transfer the data
2734 * allocate our own buffer and setup the mailbox command to
2735 * use ours
2736 */
2737 if (pmb->mbxCommand == MBX_RUN_BIU_DIAG64) {
2738 uint32_t transmit_length = pmb->un.varWords[1];
2739 uint32_t receive_length = pmb->un.varWords[4];
2740 /* transmit length cannot be greater than receive length or
2741 * mailbox extension size
2742 */
2743 if ((transmit_length > receive_length) ||
2744 (transmit_length > MAILBOX_EXT_SIZE)) {
2745 rc = -ERANGE;
2746 goto job_done;
2747 }
2748
2749 rxbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2750 if (!rxbmp) {
2751 rc = -ENOMEM;
2752 goto job_done;
2753 }
2754
2755 rxbmp->virt = lpfc_mbuf_alloc(phba, 0, &rxbmp->phys);
2756 if (!rxbmp->virt) {
2757 rc = -ENOMEM;
2758 goto job_done;
2759 }
2760
2761 INIT_LIST_HEAD(&rxbmp->list);
2762 rxbpl = (struct ulp_bde64 *) rxbmp->virt;
2763 dmp = diag_cmd_data_alloc(phba, rxbpl, transmit_length, 0);
2764 if (!dmp) {
2765 rc = -ENOMEM;
2766 goto job_done;
2767 }
2768
2769 INIT_LIST_HEAD(&dmp->dma.list);
2770 pmb->un.varBIUdiag.un.s2.xmit_bde64.addrHigh =
2771 putPaddrHigh(dmp->dma.phys);
2772 pmb->un.varBIUdiag.un.s2.xmit_bde64.addrLow =
2773 putPaddrLow(dmp->dma.phys);
2774
2775 pmb->un.varBIUdiag.un.s2.rcv_bde64.addrHigh =
2776 putPaddrHigh(dmp->dma.phys +
2777 pmb->un.varBIUdiag.un.s2.
2778 xmit_bde64.tus.f.bdeSize);
2779 pmb->un.varBIUdiag.un.s2.rcv_bde64.addrLow =
2780 putPaddrLow(dmp->dma.phys +
2781 pmb->un.varBIUdiag.un.s2.
2782 xmit_bde64.tus.f.bdeSize);
2783
2784 /* copy the transmit data found in the mailbox extension area */
2785 from = (uint8_t *)mb;
2786 from += sizeof(MAILBOX_t);
2787 memcpy((uint8_t *)dmp->dma.virt, from, transmit_length);
2788 } else if (pmb->mbxCommand == MBX_READ_EVENT_LOG) {
2789 struct READ_EVENT_LOG_VAR *rdEventLog =
2790 &pmb->un.varRdEventLog ;
2791 uint32_t receive_length = rdEventLog->rcv_bde64.tus.f.bdeSize;
2792 uint32_t mode = bf_get(lpfc_event_log, rdEventLog);
2793
2794 /* receive length cannot be greater than mailbox
2795 * extension size
2796 */
2797 if (receive_length > MAILBOX_EXT_SIZE) {
2798 rc = -ERANGE;
2799 goto job_done;
2800 }
2801
2802 /* mode zero uses a bde like biu diags command */
2803 if (mode == 0) {
2804
2805 /* rebuild the command for sli4 using our own buffers
2806 * like we do for biu diags
2807 */
2808
2809 rxbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2810 if (!rxbmp) {
2811 rc = -ENOMEM;
2812 goto job_done;
2813 }
2814
2815 rxbmp->virt = lpfc_mbuf_alloc(phba, 0, &rxbmp->phys);
2816 rxbpl = (struct ulp_bde64 *) rxbmp->virt;
2817 if (rxbpl) {
2818 INIT_LIST_HEAD(&rxbmp->list);
2819 dmp = diag_cmd_data_alloc(phba, rxbpl,
2820 receive_length, 0);
2821 }
2822
2823 if (!dmp) {
2824 rc = -ENOMEM;
2825 goto job_done;
2826 }
2827
2828 INIT_LIST_HEAD(&dmp->dma.list);
2829 pmb->un.varWords[3] = putPaddrLow(dmp->dma.phys);
2830 pmb->un.varWords[4] = putPaddrHigh(dmp->dma.phys);
2831 }
2832 } else if (phba->sli_rev == LPFC_SLI_REV4) {
2833 if (pmb->mbxCommand == MBX_DUMP_MEMORY) {
2834 /* rebuild the command for sli4 using our own buffers
2835 * like we do for biu diags
2836 */
2837 uint32_t receive_length = pmb->un.varWords[2];
2838 /* receive length cannot be greater than mailbox
2839 * extension size
2840 */
2841 if ((receive_length == 0) ||
2842 (receive_length > MAILBOX_EXT_SIZE)) {
2843 rc = -ERANGE;
2844 goto job_done;
2845 }
2846
2847 rxbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2848 if (!rxbmp) {
2849 rc = -ENOMEM;
2850 goto job_done;
2851 }
2852
2853 rxbmp->virt = lpfc_mbuf_alloc(phba, 0, &rxbmp->phys);
2854 if (!rxbmp->virt) {
2855 rc = -ENOMEM;
2856 goto job_done;
2857 }
2858
2859 INIT_LIST_HEAD(&rxbmp->list);
2860 rxbpl = (struct ulp_bde64 *) rxbmp->virt;
2861 dmp = diag_cmd_data_alloc(phba, rxbpl, receive_length,
2862 0);
2863 if (!dmp) {
2864 rc = -ENOMEM;
2865 goto job_done;
2866 }
2867
2868 INIT_LIST_HEAD(&dmp->dma.list);
2869 pmb->un.varWords[3] = putPaddrLow(dmp->dma.phys);
2870 pmb->un.varWords[4] = putPaddrHigh(dmp->dma.phys);
2871 } else if ((pmb->mbxCommand == MBX_UPDATE_CFG) &&
2872 pmb->un.varUpdateCfg.co) {
2873 struct ulp_bde64 *bde =
2874 (struct ulp_bde64 *)&pmb->un.varWords[4];
2875
2876 /* bde size cannot be greater than mailbox ext size */
2877 if (bde->tus.f.bdeSize > MAILBOX_EXT_SIZE) {
2878 rc = -ERANGE;
2879 goto job_done;
2880 }
2881
2882 rxbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2883 if (!rxbmp) {
2884 rc = -ENOMEM;
2885 goto job_done;
2886 }
2887
2888 rxbmp->virt = lpfc_mbuf_alloc(phba, 0, &rxbmp->phys);
2889 if (!rxbmp->virt) {
2890 rc = -ENOMEM;
2891 goto job_done;
2892 }
2893
2894 INIT_LIST_HEAD(&rxbmp->list);
2895 rxbpl = (struct ulp_bde64 *) rxbmp->virt;
2896 dmp = diag_cmd_data_alloc(phba, rxbpl,
2897 bde->tus.f.bdeSize, 0);
2898 if (!dmp) {
2899 rc = -ENOMEM;
2900 goto job_done;
2901 }
2902
2903 INIT_LIST_HEAD(&dmp->dma.list);
2904 bde->addrHigh = putPaddrHigh(dmp->dma.phys);
2905 bde->addrLow = putPaddrLow(dmp->dma.phys);
2906
2907 /* copy the transmit data found in the mailbox
2908 * extension area
2909 */
2910 from = (uint8_t *)mb;
2911 from += sizeof(MAILBOX_t);
2912 memcpy((uint8_t *)dmp->dma.virt, from,
2913 bde->tus.f.bdeSize);
2914 }
2915 }
2916
2917 dd_data->context_un.mbox.rxbmp = rxbmp;
2918 dd_data->context_un.mbox.dmp = dmp;
2919
2920 /* setup wake call as IOCB callback */
2921 pmboxq->mbox_cmpl = lpfc_bsg_wake_mbox_wait;
2922
2923 /* setup context field to pass wait_queue pointer to wake function */
2924 pmboxq->context1 = dd_data;
2925 dd_data->type = TYPE_MBOX;
2926 dd_data->context_un.mbox.pmboxq = pmboxq;
2927 dd_data->context_un.mbox.mb = mb;
2928 dd_data->context_un.mbox.set_job = job;
2929 dd_data->context_un.mbox.ext = ext;
2930 dd_data->context_un.mbox.mbOffset = mbox_req->mbOffset;
2931 dd_data->context_un.mbox.inExtWLen = mbox_req->inExtWLen;
2932 dd_data->context_un.mbox.outExtWLen = mbox_req->outExtWLen;
2933 job->dd_data = dd_data;
2934
2935 if ((vport->fc_flag & FC_OFFLINE_MODE) ||
2936 (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE))) {
2937 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
2938 if (rc != MBX_SUCCESS) {
2939 rc = (rc == MBX_TIMEOUT) ? -ETIME : -ENODEV;
2940 goto job_done;
2941 }
2942
2943 /* job finished, copy the data */
2944 memcpy(mb, pmb, sizeof(*pmb));
2945 job->reply->reply_payload_rcv_len =
2946 sg_copy_from_buffer(job->reply_payload.sg_list,
2947 job->reply_payload.sg_cnt,
2948 mb, size);
2949 /* not waiting mbox already done */
2950 rc = 0;
2951 goto job_done;
2952 }
2953
2954 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
2955 if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY))
2956 return 1; /* job started */
2957
2958 job_done:
2959 /* common exit for error or job completed inline */
2960 kfree(mb);
2961 if (pmboxq)
2962 mempool_free(pmboxq, phba->mbox_mem_pool);
2963 kfree(ext);
2964 if (dmp) {
2965 dma_free_coherent(&phba->pcidev->dev,
2966 dmp->size, dmp->dma.virt,
2967 dmp->dma.phys);
2968 kfree(dmp);
2969 }
2970 if (rxbmp) {
2971 lpfc_mbuf_free(phba, rxbmp->virt, rxbmp->phys);
2972 kfree(rxbmp);
2973 }
2974 kfree(dd_data);
2975
2976 return rc;
2977 }
2978
2979 /**
2980 * lpfc_bsg_mbox_cmd - process an fc bsg LPFC_BSG_VENDOR_MBOX command
2981 * @job: MBOX fc_bsg_job for LPFC_BSG_VENDOR_MBOX.
2982 **/
2983 static int
2984 lpfc_bsg_mbox_cmd(struct fc_bsg_job *job)
2985 {
2986 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
2987 struct lpfc_hba *phba = vport->phba;
2988 int rc = 0;
2989
2990 /* in case no data is transferred */
2991 job->reply->reply_payload_rcv_len = 0;
2992 if (job->request_len <
2993 sizeof(struct fc_bsg_request) + sizeof(struct dfc_mbox_req)) {
2994 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2995 "2737 Received MBOX_REQ request below "
2996 "minimum size\n");
2997 rc = -EINVAL;
2998 goto job_error;
2999 }
3000
3001 if (job->request_payload.payload_len != BSG_MBOX_SIZE) {
3002 rc = -EINVAL;
3003 goto job_error;
3004 }
3005
3006 if (job->reply_payload.payload_len != BSG_MBOX_SIZE) {
3007 rc = -EINVAL;
3008 goto job_error;
3009 }
3010
3011 if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) {
3012 rc = -EAGAIN;
3013 goto job_error;
3014 }
3015
3016 rc = lpfc_bsg_issue_mbox(phba, job, vport);
3017
3018 job_error:
3019 if (rc == 0) {
3020 /* job done */
3021 job->reply->result = 0;
3022 job->dd_data = NULL;
3023 job->job_done(job);
3024 } else if (rc == 1)
3025 /* job submitted, will complete later*/
3026 rc = 0; /* return zero, no error */
3027 else {
3028 /* some error occurred */
3029 job->reply->result = rc;
3030 job->dd_data = NULL;
3031 }
3032
3033 return rc;
3034 }
3035
3036 /**
3037 * lpfc_bsg_menlo_cmd_cmp - lpfc_menlo_cmd completion handler
3038 * @phba: Pointer to HBA context object.
3039 * @cmdiocbq: Pointer to command iocb.
3040 * @rspiocbq: Pointer to response iocb.
3041 *
3042 * This function is the completion handler for iocbs issued using
3043 * lpfc_menlo_cmd function. This function is called by the
3044 * ring event handler function without any lock held. This function
3045 * can be called from both worker thread context and interrupt
3046 * context. This function also can be called from another thread which
3047 * cleans up the SLI layer objects.
3048 * This function copies the contents of the response iocb to the
3049 * response iocb memory object provided by the caller of
3050 * lpfc_sli_issue_iocb_wait and then wakes up the thread which
3051 * sleeps for the iocb completion.
3052 **/
3053 static void
3054 lpfc_bsg_menlo_cmd_cmp(struct lpfc_hba *phba,
3055 struct lpfc_iocbq *cmdiocbq,
3056 struct lpfc_iocbq *rspiocbq)
3057 {
3058 struct bsg_job_data *dd_data;
3059 struct fc_bsg_job *job;
3060 IOCB_t *rsp;
3061 struct lpfc_dmabuf *bmp;
3062 struct lpfc_bsg_menlo *menlo;
3063 unsigned long flags;
3064 struct menlo_response *menlo_resp;
3065 int rc = 0;
3066
3067 spin_lock_irqsave(&phba->ct_ev_lock, flags);
3068 dd_data = cmdiocbq->context1;
3069 if (!dd_data) {
3070 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3071 return;
3072 }
3073
3074 menlo = &dd_data->context_un.menlo;
3075 job = menlo->set_job;
3076 job->dd_data = NULL; /* so timeout handler does not reply */
3077
3078 spin_lock_irqsave(&phba->hbalock, flags);
3079 cmdiocbq->iocb_flag |= LPFC_IO_WAKE;
3080 if (cmdiocbq->context2 && rspiocbq)
3081 memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb,
3082 &rspiocbq->iocb, sizeof(IOCB_t));
3083 spin_unlock_irqrestore(&phba->hbalock, flags);
3084
3085 bmp = menlo->bmp;
3086 rspiocbq = menlo->rspiocbq;
3087 rsp = &rspiocbq->iocb;
3088
3089 pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
3090 job->request_payload.sg_cnt, DMA_TO_DEVICE);
3091 pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list,
3092 job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
3093
3094 /* always return the xri, this would be used in the case
3095 * of a menlo download to allow the data to be sent as a continuation
3096 * of the exchange.
3097 */
3098 menlo_resp = (struct menlo_response *)
3099 job->reply->reply_data.vendor_reply.vendor_rsp;
3100 menlo_resp->xri = rsp->ulpContext;
3101 if (rsp->ulpStatus) {
3102 if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
3103 switch (rsp->un.ulpWord[4] & 0xff) {
3104 case IOERR_SEQUENCE_TIMEOUT:
3105 rc = -ETIMEDOUT;
3106 break;
3107 case IOERR_INVALID_RPI:
3108 rc = -EFAULT;
3109 break;
3110 default:
3111 rc = -EACCES;
3112 break;
3113 }
3114 } else
3115 rc = -EACCES;
3116 } else
3117 job->reply->reply_payload_rcv_len =
3118 rsp->un.genreq64.bdl.bdeSize;
3119
3120 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
3121 lpfc_sli_release_iocbq(phba, rspiocbq);
3122 lpfc_sli_release_iocbq(phba, cmdiocbq);
3123 kfree(bmp);
3124 kfree(dd_data);
3125 /* make error code available to userspace */
3126 job->reply->result = rc;
3127 /* complete the job back to userspace */
3128 job->job_done(job);
3129 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3130 return;
3131 }
3132
3133 /**
3134 * lpfc_menlo_cmd - send an ioctl for menlo hardware
3135 * @job: fc_bsg_job to handle
3136 *
3137 * This function issues a gen request 64 CR ioctl for all menlo cmd requests,
3138 * all the command completions will return the xri for the command.
3139 * For menlo data requests a gen request 64 CX is used to continue the exchange
3140 * supplied in the menlo request header xri field.
3141 **/
3142 static int
3143 lpfc_menlo_cmd(struct fc_bsg_job *job)
3144 {
3145 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
3146 struct lpfc_hba *phba = vport->phba;
3147 struct lpfc_iocbq *cmdiocbq, *rspiocbq;
3148 IOCB_t *cmd, *rsp;
3149 int rc = 0;
3150 struct menlo_command *menlo_cmd;
3151 struct menlo_response *menlo_resp;
3152 struct lpfc_dmabuf *bmp = NULL;
3153 int request_nseg;
3154 int reply_nseg;
3155 struct scatterlist *sgel = NULL;
3156 int numbde;
3157 dma_addr_t busaddr;
3158 struct bsg_job_data *dd_data;
3159 struct ulp_bde64 *bpl = NULL;
3160
3161 /* in case no data is returned return just the return code */
3162 job->reply->reply_payload_rcv_len = 0;
3163
3164 if (job->request_len <
3165 sizeof(struct fc_bsg_request) +
3166 sizeof(struct menlo_command)) {
3167 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3168 "2784 Received MENLO_CMD request below "
3169 "minimum size\n");
3170 rc = -ERANGE;
3171 goto no_dd_data;
3172 }
3173
3174 if (job->reply_len <
3175 sizeof(struct fc_bsg_request) + sizeof(struct menlo_response)) {
3176 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3177 "2785 Received MENLO_CMD reply below "
3178 "minimum size\n");
3179 rc = -ERANGE;
3180 goto no_dd_data;
3181 }
3182
3183 if (!(phba->menlo_flag & HBA_MENLO_SUPPORT)) {
3184 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3185 "2786 Adapter does not support menlo "
3186 "commands\n");
3187 rc = -EPERM;
3188 goto no_dd_data;
3189 }
3190
3191 menlo_cmd = (struct menlo_command *)
3192 job->request->rqst_data.h_vendor.vendor_cmd;
3193
3194 menlo_resp = (struct menlo_response *)
3195 job->reply->reply_data.vendor_reply.vendor_rsp;
3196
3197 /* allocate our bsg tracking structure */
3198 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
3199 if (!dd_data) {
3200 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3201 "2787 Failed allocation of dd_data\n");
3202 rc = -ENOMEM;
3203 goto no_dd_data;
3204 }
3205
3206 bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
3207 if (!bmp) {
3208 rc = -ENOMEM;
3209 goto free_dd;
3210 }
3211
3212 cmdiocbq = lpfc_sli_get_iocbq(phba);
3213 if (!cmdiocbq) {
3214 rc = -ENOMEM;
3215 goto free_bmp;
3216 }
3217
3218 rspiocbq = lpfc_sli_get_iocbq(phba);
3219 if (!rspiocbq) {
3220 rc = -ENOMEM;
3221 goto free_cmdiocbq;
3222 }
3223
3224 rsp = &rspiocbq->iocb;
3225
3226 bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys);
3227 if (!bmp->virt) {
3228 rc = -ENOMEM;
3229 goto free_rspiocbq;
3230 }
3231
3232 INIT_LIST_HEAD(&bmp->list);
3233 bpl = (struct ulp_bde64 *) bmp->virt;
3234 request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list,
3235 job->request_payload.sg_cnt, DMA_TO_DEVICE);
3236 for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) {
3237 busaddr = sg_dma_address(sgel);
3238 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
3239 bpl->tus.f.bdeSize = sg_dma_len(sgel);
3240 bpl->tus.w = cpu_to_le32(bpl->tus.w);
3241 bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
3242 bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
3243 bpl++;
3244 }
3245
3246 reply_nseg = pci_map_sg(phba->pcidev, job->reply_payload.sg_list,
3247 job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
3248 for_each_sg(job->reply_payload.sg_list, sgel, reply_nseg, numbde) {
3249 busaddr = sg_dma_address(sgel);
3250 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
3251 bpl->tus.f.bdeSize = sg_dma_len(sgel);
3252 bpl->tus.w = cpu_to_le32(bpl->tus.w);
3253 bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
3254 bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
3255 bpl++;
3256 }
3257
3258 cmd = &cmdiocbq->iocb;
3259 cmd->un.genreq64.bdl.ulpIoTag32 = 0;
3260 cmd->un.genreq64.bdl.addrHigh = putPaddrHigh(bmp->phys);
3261 cmd->un.genreq64.bdl.addrLow = putPaddrLow(bmp->phys);
3262 cmd->un.genreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
3263 cmd->un.genreq64.bdl.bdeSize =
3264 (request_nseg + reply_nseg) * sizeof(struct ulp_bde64);
3265 cmd->un.genreq64.w5.hcsw.Fctl = (SI | LA);
3266 cmd->un.genreq64.w5.hcsw.Dfctl = 0;
3267 cmd->un.genreq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CMD;
3268 cmd->un.genreq64.w5.hcsw.Type = MENLO_TRANSPORT_TYPE; /* 0xfe */
3269 cmd->ulpBdeCount = 1;
3270 cmd->ulpClass = CLASS3;
3271 cmd->ulpOwner = OWN_CHIP;
3272 cmd->ulpLe = 1; /* Limited Edition */
3273 cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
3274 cmdiocbq->vport = phba->pport;
3275 /* We want the firmware to timeout before we do */
3276 cmd->ulpTimeout = MENLO_TIMEOUT - 5;
3277 cmdiocbq->context3 = bmp;
3278 cmdiocbq->context2 = rspiocbq;
3279 cmdiocbq->iocb_cmpl = lpfc_bsg_menlo_cmd_cmp;
3280 cmdiocbq->context1 = dd_data;
3281 cmdiocbq->context2 = rspiocbq;
3282 if (menlo_cmd->cmd == LPFC_BSG_VENDOR_MENLO_CMD) {
3283 cmd->ulpCommand = CMD_GEN_REQUEST64_CR;
3284 cmd->ulpPU = MENLO_PU; /* 3 */
3285 cmd->un.ulpWord[4] = MENLO_DID; /* 0x0000FC0E */
3286 cmd->ulpContext = MENLO_CONTEXT; /* 0 */
3287 } else {
3288 cmd->ulpCommand = CMD_GEN_REQUEST64_CX;
3289 cmd->ulpPU = 1;
3290 cmd->un.ulpWord[4] = 0;
3291 cmd->ulpContext = menlo_cmd->xri;
3292 }
3293
3294 dd_data->type = TYPE_MENLO;
3295 dd_data->context_un.menlo.cmdiocbq = cmdiocbq;
3296 dd_data->context_un.menlo.rspiocbq = rspiocbq;
3297 dd_data->context_un.menlo.set_job = job;
3298 dd_data->context_un.menlo.bmp = bmp;
3299
3300 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq,
3301 MENLO_TIMEOUT - 5);
3302 if (rc == IOCB_SUCCESS)
3303 return 0; /* done for now */
3304
3305 /* iocb failed so cleanup */
3306 pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
3307 job->request_payload.sg_cnt, DMA_TO_DEVICE);
3308 pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list,
3309 job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
3310
3311 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
3312
3313 free_rspiocbq:
3314 lpfc_sli_release_iocbq(phba, rspiocbq);
3315 free_cmdiocbq:
3316 lpfc_sli_release_iocbq(phba, cmdiocbq);
3317 free_bmp:
3318 kfree(bmp);
3319 free_dd:
3320 kfree(dd_data);
3321 no_dd_data:
3322 /* make error code available to userspace */
3323 job->reply->result = rc;
3324 job->dd_data = NULL;
3325 return rc;
3326 }
3327 /**
3328 * lpfc_bsg_hst_vendor - process a vendor-specific fc_bsg_job
3329 * @job: fc_bsg_job to handle
3330 **/
3331 static int
3332 lpfc_bsg_hst_vendor(struct fc_bsg_job *job)
3333 {
3334 int command = job->request->rqst_data.h_vendor.vendor_cmd[0];
3335 int rc;
3336
3337 switch (command) {
3338 case LPFC_BSG_VENDOR_SET_CT_EVENT:
3339 rc = lpfc_bsg_hba_set_event(job);
3340 break;
3341 case LPFC_BSG_VENDOR_GET_CT_EVENT:
3342 rc = lpfc_bsg_hba_get_event(job);
3343 break;
3344 case LPFC_BSG_VENDOR_SEND_MGMT_RESP:
3345 rc = lpfc_bsg_send_mgmt_rsp(job);
3346 break;
3347 case LPFC_BSG_VENDOR_DIAG_MODE:
3348 rc = lpfc_bsg_diag_mode(job);
3349 break;
3350 case LPFC_BSG_VENDOR_DIAG_TEST:
3351 rc = lpfc_bsg_diag_test(job);
3352 break;
3353 case LPFC_BSG_VENDOR_GET_MGMT_REV:
3354 rc = lpfc_bsg_get_dfc_rev(job);
3355 break;
3356 case LPFC_BSG_VENDOR_MBOX:
3357 rc = lpfc_bsg_mbox_cmd(job);
3358 break;
3359 case LPFC_BSG_VENDOR_MENLO_CMD:
3360 case LPFC_BSG_VENDOR_MENLO_DATA:
3361 rc = lpfc_menlo_cmd(job);
3362 break;
3363 default:
3364 rc = -EINVAL;
3365 job->reply->reply_payload_rcv_len = 0;
3366 /* make error code available to userspace */
3367 job->reply->result = rc;
3368 break;
3369 }
3370
3371 return rc;
3372 }
3373
3374 /**
3375 * lpfc_bsg_request - handle a bsg request from the FC transport
3376 * @job: fc_bsg_job to handle
3377 **/
3378 int
3379 lpfc_bsg_request(struct fc_bsg_job *job)
3380 {
3381 uint32_t msgcode;
3382 int rc;
3383
3384 msgcode = job->request->msgcode;
3385 switch (msgcode) {
3386 case FC_BSG_HST_VENDOR:
3387 rc = lpfc_bsg_hst_vendor(job);
3388 break;
3389 case FC_BSG_RPT_ELS:
3390 rc = lpfc_bsg_rport_els(job);
3391 break;
3392 case FC_BSG_RPT_CT:
3393 rc = lpfc_bsg_send_mgmt_cmd(job);
3394 break;
3395 default:
3396 rc = -EINVAL;
3397 job->reply->reply_payload_rcv_len = 0;
3398 /* make error code available to userspace */
3399 job->reply->result = rc;
3400 break;
3401 }
3402
3403 return rc;
3404 }
3405
3406 /**
3407 * lpfc_bsg_timeout - handle timeout of a bsg request from the FC transport
3408 * @job: fc_bsg_job that has timed out
3409 *
3410 * This function just aborts the job's IOCB. The aborted IOCB will return to
3411 * the waiting function which will handle passing the error back to userspace
3412 **/
3413 int
3414 lpfc_bsg_timeout(struct fc_bsg_job *job)
3415 {
3416 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
3417 struct lpfc_hba *phba = vport->phba;
3418 struct lpfc_iocbq *cmdiocb;
3419 struct lpfc_bsg_event *evt;
3420 struct lpfc_bsg_iocb *iocb;
3421 struct lpfc_bsg_mbox *mbox;
3422 struct lpfc_bsg_menlo *menlo;
3423 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
3424 struct bsg_job_data *dd_data;
3425 unsigned long flags;
3426
3427 spin_lock_irqsave(&phba->ct_ev_lock, flags);
3428 dd_data = (struct bsg_job_data *)job->dd_data;
3429 /* timeout and completion crossed paths if no dd_data */
3430 if (!dd_data) {
3431 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3432 return 0;
3433 }
3434
3435 switch (dd_data->type) {
3436 case TYPE_IOCB:
3437 iocb = &dd_data->context_un.iocb;
3438 cmdiocb = iocb->cmdiocbq;
3439 /* hint to completion handler that the job timed out */
3440 job->reply->result = -EAGAIN;
3441 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3442 /* this will call our completion handler */
3443 spin_lock_irq(&phba->hbalock);
3444 lpfc_sli_issue_abort_iotag(phba, pring, cmdiocb);
3445 spin_unlock_irq(&phba->hbalock);
3446 break;
3447 case TYPE_EVT:
3448 evt = dd_data->context_un.evt;
3449 /* this event has no job anymore */
3450 evt->set_job = NULL;
3451 job->dd_data = NULL;
3452 job->reply->reply_payload_rcv_len = 0;
3453 /* Return -EAGAIN which is our way of signallying the
3454 * app to retry.
3455 */
3456 job->reply->result = -EAGAIN;
3457 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3458 job->job_done(job);
3459 break;
3460 case TYPE_MBOX:
3461 mbox = &dd_data->context_un.mbox;
3462 /* this mbox has no job anymore */
3463 mbox->set_job = NULL;
3464 job->dd_data = NULL;
3465 job->reply->reply_payload_rcv_len = 0;
3466 job->reply->result = -EAGAIN;
3467 /* the mbox completion handler can now be run */
3468 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3469 job->job_done(job);
3470 break;
3471 case TYPE_MENLO:
3472 menlo = &dd_data->context_un.menlo;
3473 cmdiocb = menlo->cmdiocbq;
3474 /* hint to completion handler that the job timed out */
3475 job->reply->result = -EAGAIN;
3476 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3477 /* this will call our completion handler */
3478 spin_lock_irq(&phba->hbalock);
3479 lpfc_sli_issue_abort_iotag(phba, pring, cmdiocb);
3480 spin_unlock_irq(&phba->hbalock);
3481 break;
3482 default:
3483 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3484 break;
3485 }
3486
3487 /* scsi transport fc fc_bsg_job_timeout expects a zero return code,
3488 * otherwise an error message will be displayed on the console
3489 * so always return success (zero)
3490 */
3491 return 0;
3492 }
Tomato firmware and modifications.