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x86/xen: resume timer irqs early
[linux/fpc-iii.git] / drivers / scsi / lpfc / lpfc_bsg.c
blobb92aec989d60fed0e78c7ad61723529d8b0943da
1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2009-2013 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 #include <linux/list.h>
27
28 #include <scsi/scsi.h>
29 #include <scsi/scsi_host.h>
30 #include <scsi/scsi_transport_fc.h>
31 #include <scsi/scsi_bsg_fc.h>
32 #include <scsi/fc/fc_fs.h>
33
34 #include "lpfc_hw4.h"
35 #include "lpfc_hw.h"
36 #include "lpfc_sli.h"
37 #include "lpfc_sli4.h"
38 #include "lpfc_nl.h"
39 #include "lpfc_bsg.h"
40 #include "lpfc_disc.h"
41 #include "lpfc_scsi.h"
42 #include "lpfc.h"
43 #include "lpfc_logmsg.h"
44 #include "lpfc_crtn.h"
45 #include "lpfc_debugfs.h"
46 #include "lpfc_vport.h"
47 #include "lpfc_version.h"
48
49 struct lpfc_bsg_event {
50 struct list_head node;
51 struct kref kref;
52 wait_queue_head_t wq;
53
54 /* Event type and waiter identifiers */
55 uint32_t type_mask;
56 uint32_t req_id;
57 uint32_t reg_id;
58
59 /* next two flags are here for the auto-delete logic */
60 unsigned long wait_time_stamp;
61 int waiting;
62
63 /* seen and not seen events */
64 struct list_head events_to_get;
65 struct list_head events_to_see;
66
67 /* driver data associated with the job */
68 void *dd_data;
69 };
70
71 struct lpfc_bsg_iocb {
72 struct lpfc_iocbq *cmdiocbq;
73 struct lpfc_dmabuf *rmp;
74 struct lpfc_nodelist *ndlp;
75 };
76
77 struct lpfc_bsg_mbox {
78 LPFC_MBOXQ_t *pmboxq;
79 MAILBOX_t *mb;
80 struct lpfc_dmabuf *dmabuffers; /* for BIU diags */
81 uint8_t *ext; /* extended mailbox data */
82 uint32_t mbOffset; /* from app */
83 uint32_t inExtWLen; /* from app */
84 uint32_t outExtWLen; /* from app */
85 };
86
87 #define MENLO_DID 0x0000FC0E
88
89 struct lpfc_bsg_menlo {
90 struct lpfc_iocbq *cmdiocbq;
91 struct lpfc_dmabuf *rmp;
92 };
93
94 #define TYPE_EVT 1
95 #define TYPE_IOCB 2
96 #define TYPE_MBOX 3
97 #define TYPE_MENLO 4
98 struct bsg_job_data {
99 uint32_t type;
100 struct fc_bsg_job *set_job; /* job waiting for this iocb to finish */
101 union {
102 struct lpfc_bsg_event *evt;
103 struct lpfc_bsg_iocb iocb;
104 struct lpfc_bsg_mbox mbox;
105 struct lpfc_bsg_menlo menlo;
106 } context_un;
107 };
108
109 struct event_data {
110 struct list_head node;
111 uint32_t type;
112 uint32_t immed_dat;
113 void *data;
114 uint32_t len;
115 };
116
117 #define BUF_SZ_4K 4096
118 #define SLI_CT_ELX_LOOPBACK 0x10
119
120 enum ELX_LOOPBACK_CMD {
121 ELX_LOOPBACK_XRI_SETUP,
122 ELX_LOOPBACK_DATA,
123 };
124
125 #define ELX_LOOPBACK_HEADER_SZ \
126 (size_t)(&((struct lpfc_sli_ct_request *)NULL)->un)
127
128 struct lpfc_dmabufext {
129 struct lpfc_dmabuf dma;
130 uint32_t size;
131 uint32_t flag;
132 };
133
134 static void
135 lpfc_free_bsg_buffers(struct lpfc_hba *phba, struct lpfc_dmabuf *mlist)
136 {
137 struct lpfc_dmabuf *mlast, *next_mlast;
138
139 if (mlist) {
140 list_for_each_entry_safe(mlast, next_mlast, &mlist->list,
141 list) {
142 lpfc_mbuf_free(phba, mlast->virt, mlast->phys);
143 list_del(&mlast->list);
144 kfree(mlast);
145 }
146 lpfc_mbuf_free(phba, mlist->virt, mlist->phys);
147 kfree(mlist);
148 }
149 return;
150 }
151
152 static struct lpfc_dmabuf *
153 lpfc_alloc_bsg_buffers(struct lpfc_hba *phba, unsigned int size,
154 int outbound_buffers, struct ulp_bde64 *bpl,
155 int *bpl_entries)
156 {
157 struct lpfc_dmabuf *mlist = NULL;
158 struct lpfc_dmabuf *mp;
159 unsigned int bytes_left = size;
160
161 /* Verify we can support the size specified */
162 if (!size || (size > (*bpl_entries * LPFC_BPL_SIZE)))
163 return NULL;
164
165 /* Determine the number of dma buffers to allocate */
166 *bpl_entries = (size % LPFC_BPL_SIZE ? size/LPFC_BPL_SIZE + 1 :
167 size/LPFC_BPL_SIZE);
168
169 /* Allocate dma buffer and place in BPL passed */
170 while (bytes_left) {
171 /* Allocate dma buffer */
172 mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
173 if (!mp) {
174 if (mlist)
175 lpfc_free_bsg_buffers(phba, mlist);
176 return NULL;
177 }
178
179 INIT_LIST_HEAD(&mp->list);
180 mp->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &(mp->phys));
181
182 if (!mp->virt) {
183 kfree(mp);
184 if (mlist)
185 lpfc_free_bsg_buffers(phba, mlist);
186 return NULL;
187 }
188
189 /* Queue it to a linked list */
190 if (!mlist)
191 mlist = mp;
192 else
193 list_add_tail(&mp->list, &mlist->list);
194
195 /* Add buffer to buffer pointer list */
196 if (outbound_buffers)
197 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
198 else
199 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
200 bpl->addrLow = le32_to_cpu(putPaddrLow(mp->phys));
201 bpl->addrHigh = le32_to_cpu(putPaddrHigh(mp->phys));
202 bpl->tus.f.bdeSize = (uint16_t)
203 (bytes_left >= LPFC_BPL_SIZE ? LPFC_BPL_SIZE :
204 bytes_left);
205 bytes_left -= bpl->tus.f.bdeSize;
206 bpl->tus.w = le32_to_cpu(bpl->tus.w);
207 bpl++;
208 }
209 return mlist;
210 }
211
212 static unsigned int
213 lpfc_bsg_copy_data(struct lpfc_dmabuf *dma_buffers,
214 struct fc_bsg_buffer *bsg_buffers,
215 unsigned int bytes_to_transfer, int to_buffers)
216 {
217
218 struct lpfc_dmabuf *mp;
219 unsigned int transfer_bytes, bytes_copied = 0;
220 unsigned int sg_offset, dma_offset;
221 unsigned char *dma_address, *sg_address;
222 LIST_HEAD(temp_list);
223 struct sg_mapping_iter miter;
224 unsigned long flags;
225 unsigned int sg_flags = SG_MITER_ATOMIC;
226 bool sg_valid;
227
228 list_splice_init(&dma_buffers->list, &temp_list);
229 list_add(&dma_buffers->list, &temp_list);
230 sg_offset = 0;
231 if (to_buffers)
232 sg_flags |= SG_MITER_FROM_SG;
233 else
234 sg_flags |= SG_MITER_TO_SG;
235 sg_miter_start(&miter, bsg_buffers->sg_list, bsg_buffers->sg_cnt,
236 sg_flags);
237 local_irq_save(flags);
238 sg_valid = sg_miter_next(&miter);
239 list_for_each_entry(mp, &temp_list, list) {
240 dma_offset = 0;
241 while (bytes_to_transfer && sg_valid &&
242 (dma_offset < LPFC_BPL_SIZE)) {
243 dma_address = mp->virt + dma_offset;
244 if (sg_offset) {
245 /* Continue previous partial transfer of sg */
246 sg_address = miter.addr + sg_offset;
247 transfer_bytes = miter.length - sg_offset;
248 } else {
249 sg_address = miter.addr;
250 transfer_bytes = miter.length;
251 }
252 if (bytes_to_transfer < transfer_bytes)
253 transfer_bytes = bytes_to_transfer;
254 if (transfer_bytes > (LPFC_BPL_SIZE - dma_offset))
255 transfer_bytes = LPFC_BPL_SIZE - dma_offset;
256 if (to_buffers)
257 memcpy(dma_address, sg_address, transfer_bytes);
258 else
259 memcpy(sg_address, dma_address, transfer_bytes);
260 dma_offset += transfer_bytes;
261 sg_offset += transfer_bytes;
262 bytes_to_transfer -= transfer_bytes;
263 bytes_copied += transfer_bytes;
264 if (sg_offset >= miter.length) {
265 sg_offset = 0;
266 sg_valid = sg_miter_next(&miter);
267 }
268 }
269 }
270 sg_miter_stop(&miter);
271 local_irq_restore(flags);
272 list_del_init(&dma_buffers->list);
273 list_splice(&temp_list, &dma_buffers->list);
274 return bytes_copied;
275 }
276
277 /**
278 * lpfc_bsg_send_mgmt_cmd_cmp - lpfc_bsg_send_mgmt_cmd's completion handler
279 * @phba: Pointer to HBA context object.
280 * @cmdiocbq: Pointer to command iocb.
281 * @rspiocbq: Pointer to response iocb.
282 *
283 * This function is the completion handler for iocbs issued using
284 * lpfc_bsg_send_mgmt_cmd function. This function is called by the
285 * ring event handler function without any lock held. This function
286 * can be called from both worker thread context and interrupt
287 * context. This function also can be called from another thread which
288 * cleans up the SLI layer objects.
289 * This function copies the contents of the response iocb to the
290 * response iocb memory object provided by the caller of
291 * lpfc_sli_issue_iocb_wait and then wakes up the thread which
292 * sleeps for the iocb completion.
293 **/
294 static void
295 lpfc_bsg_send_mgmt_cmd_cmp(struct lpfc_hba *phba,
296 struct lpfc_iocbq *cmdiocbq,
297 struct lpfc_iocbq *rspiocbq)
298 {
299 struct bsg_job_data *dd_data;
300 struct fc_bsg_job *job;
301 IOCB_t *rsp;
302 struct lpfc_dmabuf *bmp, *cmp, *rmp;
303 struct lpfc_nodelist *ndlp;
304 struct lpfc_bsg_iocb *iocb;
305 unsigned long flags;
306 unsigned int rsp_size;
307 int rc = 0;
308
309 dd_data = cmdiocbq->context1;
310
311 /* Determine if job has been aborted */
312 spin_lock_irqsave(&phba->ct_ev_lock, flags);
313 job = dd_data->set_job;
314 if (job) {
315 /* Prevent timeout handling from trying to abort job */
316 job->dd_data = NULL;
317 }
318 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
319
320 /* Close the timeout handler abort window */
321 spin_lock_irqsave(&phba->hbalock, flags);
322 cmdiocbq->iocb_flag &= ~LPFC_IO_CMD_OUTSTANDING;
323 spin_unlock_irqrestore(&phba->hbalock, flags);
324
325 iocb = &dd_data->context_un.iocb;
326 ndlp = iocb->ndlp;
327 rmp = iocb->rmp;
328 cmp = cmdiocbq->context2;
329 bmp = cmdiocbq->context3;
330 rsp = &rspiocbq->iocb;
331
332 /* Copy the completed data or set the error status */
333
334 if (job) {
335 if (rsp->ulpStatus) {
336 if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
337 switch (rsp->un.ulpWord[4] & IOERR_PARAM_MASK) {
338 case IOERR_SEQUENCE_TIMEOUT:
339 rc = -ETIMEDOUT;
340 break;
341 case IOERR_INVALID_RPI:
342 rc = -EFAULT;
343 break;
344 default:
345 rc = -EACCES;
346 break;
347 }
348 } else {
349 rc = -EACCES;
350 }
351 } else {
352 rsp_size = rsp->un.genreq64.bdl.bdeSize;
353 job->reply->reply_payload_rcv_len =
354 lpfc_bsg_copy_data(rmp, &job->reply_payload,
355 rsp_size, 0);
356 }
357 }
358
359 lpfc_free_bsg_buffers(phba, cmp);
360 lpfc_free_bsg_buffers(phba, rmp);
361 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
362 kfree(bmp);
363 lpfc_sli_release_iocbq(phba, cmdiocbq);
364 lpfc_nlp_put(ndlp);
365 kfree(dd_data);
366
367 /* Complete the job if the job is still active */
368
369 if (job) {
370 job->reply->result = rc;
371 job->job_done(job);
372 }
373 return;
374 }
375
376 /**
377 * lpfc_bsg_send_mgmt_cmd - send a CT command from a bsg request
378 * @job: fc_bsg_job to handle
379 **/
380 static int
381 lpfc_bsg_send_mgmt_cmd(struct fc_bsg_job *job)
382 {
383 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
384 struct lpfc_hba *phba = vport->phba;
385 struct lpfc_rport_data *rdata = job->rport->dd_data;
386 struct lpfc_nodelist *ndlp = rdata->pnode;
387 struct ulp_bde64 *bpl = NULL;
388 uint32_t timeout;
389 struct lpfc_iocbq *cmdiocbq = NULL;
390 IOCB_t *cmd;
391 struct lpfc_dmabuf *bmp = NULL, *cmp = NULL, *rmp = NULL;
392 int request_nseg;
393 int reply_nseg;
394 struct bsg_job_data *dd_data;
395 unsigned long flags;
396 uint32_t creg_val;
397 int rc = 0;
398 int iocb_stat;
399
400 /* in case no data is transferred */
401 job->reply->reply_payload_rcv_len = 0;
402
403 /* allocate our bsg tracking structure */
404 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
405 if (!dd_data) {
406 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
407 "2733 Failed allocation of dd_data\n");
408 rc = -ENOMEM;
409 goto no_dd_data;
410 }
411
412 if (!lpfc_nlp_get(ndlp)) {
413 rc = -ENODEV;
414 goto no_ndlp;
415 }
416
417 if (ndlp->nlp_flag & NLP_ELS_SND_MASK) {
418 rc = -ENODEV;
419 goto free_ndlp;
420 }
421
422 cmdiocbq = lpfc_sli_get_iocbq(phba);
423 if (!cmdiocbq) {
424 rc = -ENOMEM;
425 goto free_ndlp;
426 }
427
428 cmd = &cmdiocbq->iocb;
429
430 bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
431 if (!bmp) {
432 rc = -ENOMEM;
433 goto free_cmdiocbq;
434 }
435 bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys);
436 if (!bmp->virt) {
437 rc = -ENOMEM;
438 goto free_bmp;
439 }
440
441 INIT_LIST_HEAD(&bmp->list);
442
443 bpl = (struct ulp_bde64 *) bmp->virt;
444 request_nseg = LPFC_BPL_SIZE/sizeof(struct ulp_bde64);
445 cmp = lpfc_alloc_bsg_buffers(phba, job->request_payload.payload_len,
446 1, bpl, &request_nseg);
447 if (!cmp) {
448 rc = -ENOMEM;
449 goto free_bmp;
450 }
451 lpfc_bsg_copy_data(cmp, &job->request_payload,
452 job->request_payload.payload_len, 1);
453
454 bpl += request_nseg;
455 reply_nseg = LPFC_BPL_SIZE/sizeof(struct ulp_bde64) - request_nseg;
456 rmp = lpfc_alloc_bsg_buffers(phba, job->reply_payload.payload_len, 0,
457 bpl, &reply_nseg);
458 if (!rmp) {
459 rc = -ENOMEM;
460 goto free_cmp;
461 }
462
463 cmd->un.genreq64.bdl.ulpIoTag32 = 0;
464 cmd->un.genreq64.bdl.addrHigh = putPaddrHigh(bmp->phys);
465 cmd->un.genreq64.bdl.addrLow = putPaddrLow(bmp->phys);
466 cmd->un.genreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
467 cmd->un.genreq64.bdl.bdeSize =
468 (request_nseg + reply_nseg) * sizeof(struct ulp_bde64);
469 cmd->ulpCommand = CMD_GEN_REQUEST64_CR;
470 cmd->un.genreq64.w5.hcsw.Fctl = (SI | LA);
471 cmd->un.genreq64.w5.hcsw.Dfctl = 0;
472 cmd->un.genreq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL;
473 cmd->un.genreq64.w5.hcsw.Type = FC_TYPE_CT;
474 cmd->ulpBdeCount = 1;
475 cmd->ulpLe = 1;
476 cmd->ulpClass = CLASS3;
477 cmd->ulpContext = ndlp->nlp_rpi;
478 if (phba->sli_rev == LPFC_SLI_REV4)
479 cmd->ulpContext = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
480 cmd->ulpOwner = OWN_CHIP;
481 cmdiocbq->vport = phba->pport;
482 cmdiocbq->context3 = bmp;
483 cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
484 timeout = phba->fc_ratov * 2;
485 cmd->ulpTimeout = timeout;
486
487 cmdiocbq->iocb_cmpl = lpfc_bsg_send_mgmt_cmd_cmp;
488 cmdiocbq->context1 = dd_data;
489 cmdiocbq->context2 = cmp;
490 cmdiocbq->context3 = bmp;
491 cmdiocbq->context_un.ndlp = ndlp;
492 dd_data->type = TYPE_IOCB;
493 dd_data->set_job = job;
494 dd_data->context_un.iocb.cmdiocbq = cmdiocbq;
495 dd_data->context_un.iocb.ndlp = ndlp;
496 dd_data->context_un.iocb.rmp = rmp;
497 job->dd_data = dd_data;
498
499 if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
500 if (lpfc_readl(phba->HCregaddr, &creg_val)) {
501 rc = -EIO ;
502 goto free_rmp;
503 }
504 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
505 writel(creg_val, phba->HCregaddr);
506 readl(phba->HCregaddr); /* flush */
507 }
508
509 iocb_stat = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0);
510
511 if (iocb_stat == IOCB_SUCCESS) {
512 spin_lock_irqsave(&phba->hbalock, flags);
513 /* make sure the I/O had not been completed yet */
514 if (cmdiocbq->iocb_flag & LPFC_IO_LIBDFC) {
515 /* open up abort window to timeout handler */
516 cmdiocbq->iocb_flag |= LPFC_IO_CMD_OUTSTANDING;
517 }
518 spin_unlock_irqrestore(&phba->hbalock, flags);
519 return 0; /* done for now */
520 } else if (iocb_stat == IOCB_BUSY) {
521 rc = -EAGAIN;
522 } else {
523 rc = -EIO;
524 }
525
526 /* iocb failed so cleanup */
527 job->dd_data = NULL;
528
529 free_rmp:
530 lpfc_free_bsg_buffers(phba, rmp);
531 free_cmp:
532 lpfc_free_bsg_buffers(phba, cmp);
533 free_bmp:
534 if (bmp->virt)
535 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
536 kfree(bmp);
537 free_cmdiocbq:
538 lpfc_sli_release_iocbq(phba, cmdiocbq);
539 free_ndlp:
540 lpfc_nlp_put(ndlp);
541 no_ndlp:
542 kfree(dd_data);
543 no_dd_data:
544 /* make error code available to userspace */
545 job->reply->result = rc;
546 job->dd_data = NULL;
547 return rc;
548 }
549
550 /**
551 * lpfc_bsg_rport_els_cmp - lpfc_bsg_rport_els's completion handler
552 * @phba: Pointer to HBA context object.
553 * @cmdiocbq: Pointer to command iocb.
554 * @rspiocbq: Pointer to response iocb.
555 *
556 * This function is the completion handler for iocbs issued using
557 * lpfc_bsg_rport_els_cmp function. This function is called by the
558 * ring event handler function without any lock held. This function
559 * can be called from both worker thread context and interrupt
560 * context. This function also can be called from other thread which
561 * cleans up the SLI layer objects.
562 * This function copies the contents of the response iocb to the
563 * response iocb memory object provided by the caller of
564 * lpfc_sli_issue_iocb_wait and then wakes up the thread which
565 * sleeps for the iocb completion.
566 **/
567 static void
568 lpfc_bsg_rport_els_cmp(struct lpfc_hba *phba,
569 struct lpfc_iocbq *cmdiocbq,
570 struct lpfc_iocbq *rspiocbq)
571 {
572 struct bsg_job_data *dd_data;
573 struct fc_bsg_job *job;
574 IOCB_t *rsp;
575 struct lpfc_nodelist *ndlp;
576 struct lpfc_dmabuf *pcmd = NULL, *prsp = NULL;
577 struct fc_bsg_ctels_reply *els_reply;
578 uint8_t *rjt_data;
579 unsigned long flags;
580 unsigned int rsp_size;
581 int rc = 0;
582
583 dd_data = cmdiocbq->context1;
584 ndlp = dd_data->context_un.iocb.ndlp;
585 cmdiocbq->context1 = ndlp;
586
587 /* Determine if job has been aborted */
588 spin_lock_irqsave(&phba->ct_ev_lock, flags);
589 job = dd_data->set_job;
590 if (job) {
591 /* Prevent timeout handling from trying to abort job */
592 job->dd_data = NULL;
593 }
594 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
595
596 /* Close the timeout handler abort window */
597 spin_lock_irqsave(&phba->hbalock, flags);
598 cmdiocbq->iocb_flag &= ~LPFC_IO_CMD_OUTSTANDING;
599 spin_unlock_irqrestore(&phba->hbalock, flags);
600
601 rsp = &rspiocbq->iocb;
602 pcmd = (struct lpfc_dmabuf *)cmdiocbq->context2;
603 prsp = (struct lpfc_dmabuf *)pcmd->list.next;
604
605 /* Copy the completed job data or determine the job status if job is
606 * still active
607 */
608
609 if (job) {
610 if (rsp->ulpStatus == IOSTAT_SUCCESS) {
611 rsp_size = rsp->un.elsreq64.bdl.bdeSize;
612 job->reply->reply_payload_rcv_len =
613 sg_copy_from_buffer(job->reply_payload.sg_list,
614 job->reply_payload.sg_cnt,
615 prsp->virt,
616 rsp_size);
617 } else if (rsp->ulpStatus == IOSTAT_LS_RJT) {
618 job->reply->reply_payload_rcv_len =
619 sizeof(struct fc_bsg_ctels_reply);
620 /* LS_RJT data returned in word 4 */
621 rjt_data = (uint8_t *)&rsp->un.ulpWord[4];
622 els_reply = &job->reply->reply_data.ctels_reply;
623 els_reply->status = FC_CTELS_STATUS_REJECT;
624 els_reply->rjt_data.action = rjt_data[3];
625 els_reply->rjt_data.reason_code = rjt_data[2];
626 els_reply->rjt_data.reason_explanation = rjt_data[1];
627 els_reply->rjt_data.vendor_unique = rjt_data[0];
628 } else {
629 rc = -EIO;
630 }
631 }
632
633 lpfc_nlp_put(ndlp);
634 lpfc_els_free_iocb(phba, cmdiocbq);
635 kfree(dd_data);
636
637 /* Complete the job if the job is still active */
638
639 if (job) {
640 job->reply->result = rc;
641 job->job_done(job);
642 }
643 return;
644 }
645
646 /**
647 * lpfc_bsg_rport_els - send an ELS command from a bsg request
648 * @job: fc_bsg_job to handle
649 **/
650 static int
651 lpfc_bsg_rport_els(struct fc_bsg_job *job)
652 {
653 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
654 struct lpfc_hba *phba = vport->phba;
655 struct lpfc_rport_data *rdata = job->rport->dd_data;
656 struct lpfc_nodelist *ndlp = rdata->pnode;
657 uint32_t elscmd;
658 uint32_t cmdsize;
659 uint32_t rspsize;
660 struct lpfc_iocbq *cmdiocbq;
661 uint16_t rpi = 0;
662 struct bsg_job_data *dd_data;
663 unsigned long flags;
664 uint32_t creg_val;
665 int rc = 0;
666
667 /* in case no data is transferred */
668 job->reply->reply_payload_rcv_len = 0;
669
670 /* verify the els command is not greater than the
671 * maximum ELS transfer size.
672 */
673
674 if (job->request_payload.payload_len > FCELSSIZE) {
675 rc = -EINVAL;
676 goto no_dd_data;
677 }
678
679 /* allocate our bsg tracking structure */
680 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
681 if (!dd_data) {
682 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
683 "2735 Failed allocation of dd_data\n");
684 rc = -ENOMEM;
685 goto no_dd_data;
686 }
687
688 elscmd = job->request->rqst_data.r_els.els_code;
689 cmdsize = job->request_payload.payload_len;
690 rspsize = job->reply_payload.payload_len;
691
692 if (!lpfc_nlp_get(ndlp)) {
693 rc = -ENODEV;
694 goto free_dd_data;
695 }
696
697 /* We will use the allocated dma buffers by prep els iocb for command
698 * and response to ensure if the job times out and the request is freed,
699 * we won't be dma into memory that is no longer allocated to for the
700 * request.
701 */
702
703 cmdiocbq = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp,
704 ndlp->nlp_DID, elscmd);
705 if (!cmdiocbq) {
706 rc = -EIO;
707 goto release_ndlp;
708 }
709
710 rpi = ndlp->nlp_rpi;
711
712 /* Transfer the request payload to allocated command dma buffer */
713
714 sg_copy_to_buffer(job->request_payload.sg_list,
715 job->request_payload.sg_cnt,
716 ((struct lpfc_dmabuf *)cmdiocbq->context2)->virt,
717 cmdsize);
718
719 if (phba->sli_rev == LPFC_SLI_REV4)
720 cmdiocbq->iocb.ulpContext = phba->sli4_hba.rpi_ids[rpi];
721 else
722 cmdiocbq->iocb.ulpContext = rpi;
723 cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
724 cmdiocbq->context1 = dd_data;
725 cmdiocbq->context_un.ndlp = ndlp;
726 cmdiocbq->iocb_cmpl = lpfc_bsg_rport_els_cmp;
727 dd_data->type = TYPE_IOCB;
728 dd_data->set_job = job;
729 dd_data->context_un.iocb.cmdiocbq = cmdiocbq;
730 dd_data->context_un.iocb.ndlp = ndlp;
731 dd_data->context_un.iocb.rmp = NULL;
732 job->dd_data = dd_data;
733
734 if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
735 if (lpfc_readl(phba->HCregaddr, &creg_val)) {
736 rc = -EIO;
737 goto linkdown_err;
738 }
739 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
740 writel(creg_val, phba->HCregaddr);
741 readl(phba->HCregaddr); /* flush */
742 }
743
744 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0);
745
746 if (rc == IOCB_SUCCESS) {
747 spin_lock_irqsave(&phba->hbalock, flags);
748 /* make sure the I/O had not been completed/released */
749 if (cmdiocbq->iocb_flag & LPFC_IO_LIBDFC) {
750 /* open up abort window to timeout handler */
751 cmdiocbq->iocb_flag |= LPFC_IO_CMD_OUTSTANDING;
752 }
753 spin_unlock_irqrestore(&phba->hbalock, flags);
754 return 0; /* done for now */
755 } else if (rc == IOCB_BUSY) {
756 rc = -EAGAIN;
757 } else {
758 rc = -EIO;
759 }
760
761 /* iocb failed so cleanup */
762 job->dd_data = NULL;
763
764 linkdown_err:
765 cmdiocbq->context1 = ndlp;
766 lpfc_els_free_iocb(phba, cmdiocbq);
767
768 release_ndlp:
769 lpfc_nlp_put(ndlp);
770
771 free_dd_data:
772 kfree(dd_data);
773
774 no_dd_data:
775 /* make error code available to userspace */
776 job->reply->result = rc;
777 job->dd_data = NULL;
778 return rc;
779 }
780
781 /**
782 * lpfc_bsg_event_free - frees an allocated event structure
783 * @kref: Pointer to a kref.
784 *
785 * Called from kref_put. Back cast the kref into an event structure address.
786 * Free any events to get, delete associated nodes, free any events to see,
787 * free any data then free the event itself.
788 **/
789 static void
790 lpfc_bsg_event_free(struct kref *kref)
791 {
792 struct lpfc_bsg_event *evt = container_of(kref, struct lpfc_bsg_event,
793 kref);
794 struct event_data *ed;
795
796 list_del(&evt->node);
797
798 while (!list_empty(&evt->events_to_get)) {
799 ed = list_entry(evt->events_to_get.next, typeof(*ed), node);
800 list_del(&ed->node);
801 kfree(ed->data);
802 kfree(ed);
803 }
804
805 while (!list_empty(&evt->events_to_see)) {
806 ed = list_entry(evt->events_to_see.next, typeof(*ed), node);
807 list_del(&ed->node);
808 kfree(ed->data);
809 kfree(ed);
810 }
811
812 kfree(evt->dd_data);
813 kfree(evt);
814 }
815
816 /**
817 * lpfc_bsg_event_ref - increments the kref for an event
818 * @evt: Pointer to an event structure.
819 **/
820 static inline void
821 lpfc_bsg_event_ref(struct lpfc_bsg_event *evt)
822 {
823 kref_get(&evt->kref);
824 }
825
826 /**
827 * lpfc_bsg_event_unref - Uses kref_put to free an event structure
828 * @evt: Pointer to an event structure.
829 **/
830 static inline void
831 lpfc_bsg_event_unref(struct lpfc_bsg_event *evt)
832 {
833 kref_put(&evt->kref, lpfc_bsg_event_free);
834 }
835
836 /**
837 * lpfc_bsg_event_new - allocate and initialize a event structure
838 * @ev_mask: Mask of events.
839 * @ev_reg_id: Event reg id.
840 * @ev_req_id: Event request id.
841 **/
842 static struct lpfc_bsg_event *
843 lpfc_bsg_event_new(uint32_t ev_mask, int ev_reg_id, uint32_t ev_req_id)
844 {
845 struct lpfc_bsg_event *evt = kzalloc(sizeof(*evt), GFP_KERNEL);
846
847 if (!evt)
848 return NULL;
849
850 INIT_LIST_HEAD(&evt->events_to_get);
851 INIT_LIST_HEAD(&evt->events_to_see);
852 evt->type_mask = ev_mask;
853 evt->req_id = ev_req_id;
854 evt->reg_id = ev_reg_id;
855 evt->wait_time_stamp = jiffies;
856 evt->dd_data = NULL;
857 init_waitqueue_head(&evt->wq);
858 kref_init(&evt->kref);
859 return evt;
860 }
861
862 /**
863 * diag_cmd_data_free - Frees an lpfc dma buffer extension
864 * @phba: Pointer to HBA context object.
865 * @mlist: Pointer to an lpfc dma buffer extension.
866 **/
867 static int
868 diag_cmd_data_free(struct lpfc_hba *phba, struct lpfc_dmabufext *mlist)
869 {
870 struct lpfc_dmabufext *mlast;
871 struct pci_dev *pcidev;
872 struct list_head head, *curr, *next;
873
874 if ((!mlist) || (!lpfc_is_link_up(phba) &&
875 (phba->link_flag & LS_LOOPBACK_MODE))) {
876 return 0;
877 }
878
879 pcidev = phba->pcidev;
880 list_add_tail(&head, &mlist->dma.list);
881
882 list_for_each_safe(curr, next, &head) {
883 mlast = list_entry(curr, struct lpfc_dmabufext , dma.list);
884 if (mlast->dma.virt)
885 dma_free_coherent(&pcidev->dev,
886 mlast->size,
887 mlast->dma.virt,
888 mlast->dma.phys);
889 kfree(mlast);
890 }
891 return 0;
892 }
893
894 /**
895 * lpfc_bsg_ct_unsol_event - process an unsolicited CT command
896 * @phba:
897 * @pring:
898 * @piocbq:
899 *
900 * This function is called when an unsolicited CT command is received. It
901 * forwards the event to any processes registered to receive CT events.
902 **/
903 int
904 lpfc_bsg_ct_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
905 struct lpfc_iocbq *piocbq)
906 {
907 uint32_t evt_req_id = 0;
908 uint32_t cmd;
909 uint32_t len;
910 struct lpfc_dmabuf *dmabuf = NULL;
911 struct lpfc_bsg_event *evt;
912 struct event_data *evt_dat = NULL;
913 struct lpfc_iocbq *iocbq;
914 size_t offset = 0;
915 struct list_head head;
916 struct ulp_bde64 *bde;
917 dma_addr_t dma_addr;
918 int i;
919 struct lpfc_dmabuf *bdeBuf1 = piocbq->context2;
920 struct lpfc_dmabuf *bdeBuf2 = piocbq->context3;
921 struct lpfc_hbq_entry *hbqe;
922 struct lpfc_sli_ct_request *ct_req;
923 struct fc_bsg_job *job = NULL;
924 struct bsg_job_data *dd_data = NULL;
925 unsigned long flags;
926 int size = 0;
927
928 INIT_LIST_HEAD(&head);
929 list_add_tail(&head, &piocbq->list);
930
931 if (piocbq->iocb.ulpBdeCount == 0 ||
932 piocbq->iocb.un.cont64[0].tus.f.bdeSize == 0)
933 goto error_ct_unsol_exit;
934
935 if (phba->link_state == LPFC_HBA_ERROR ||
936 (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE)))
937 goto error_ct_unsol_exit;
938
939 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)
940 dmabuf = bdeBuf1;
941 else {
942 dma_addr = getPaddr(piocbq->iocb.un.cont64[0].addrHigh,
943 piocbq->iocb.un.cont64[0].addrLow);
944 dmabuf = lpfc_sli_ringpostbuf_get(phba, pring, dma_addr);
945 }
946 if (dmabuf == NULL)
947 goto error_ct_unsol_exit;
948 ct_req = (struct lpfc_sli_ct_request *)dmabuf->virt;
949 evt_req_id = ct_req->FsType;
950 cmd = ct_req->CommandResponse.bits.CmdRsp;
951 len = ct_req->CommandResponse.bits.Size;
952 if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED))
953 lpfc_sli_ringpostbuf_put(phba, pring, dmabuf);
954
955 spin_lock_irqsave(&phba->ct_ev_lock, flags);
956 list_for_each_entry(evt, &phba->ct_ev_waiters, node) {
957 if (!(evt->type_mask & FC_REG_CT_EVENT) ||
958 evt->req_id != evt_req_id)
959 continue;
960
961 lpfc_bsg_event_ref(evt);
962 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
963 evt_dat = kzalloc(sizeof(*evt_dat), GFP_KERNEL);
964 if (evt_dat == NULL) {
965 spin_lock_irqsave(&phba->ct_ev_lock, flags);
966 lpfc_bsg_event_unref(evt);
967 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
968 "2614 Memory allocation failed for "
969 "CT event\n");
970 break;
971 }
972
973 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
974 /* take accumulated byte count from the last iocbq */
975 iocbq = list_entry(head.prev, typeof(*iocbq), list);
976 evt_dat->len = iocbq->iocb.unsli3.rcvsli3.acc_len;
977 } else {
978 list_for_each_entry(iocbq, &head, list) {
979 for (i = 0; i < iocbq->iocb.ulpBdeCount; i++)
980 evt_dat->len +=
981 iocbq->iocb.un.cont64[i].tus.f.bdeSize;
982 }
983 }
984
985 evt_dat->data = kzalloc(evt_dat->len, GFP_KERNEL);
986 if (evt_dat->data == NULL) {
987 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
988 "2615 Memory allocation failed for "
989 "CT event data, size %d\n",
990 evt_dat->len);
991 kfree(evt_dat);
992 spin_lock_irqsave(&phba->ct_ev_lock, flags);
993 lpfc_bsg_event_unref(evt);
994 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
995 goto error_ct_unsol_exit;
996 }
997
998 list_for_each_entry(iocbq, &head, list) {
999 size = 0;
1000 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
1001 bdeBuf1 = iocbq->context2;
1002 bdeBuf2 = iocbq->context3;
1003 }
1004 for (i = 0; i < iocbq->iocb.ulpBdeCount; i++) {
1005 if (phba->sli3_options &
1006 LPFC_SLI3_HBQ_ENABLED) {
1007 if (i == 0) {
1008 hbqe = (struct lpfc_hbq_entry *)
1009 &iocbq->iocb.un.ulpWord[0];
1010 size = hbqe->bde.tus.f.bdeSize;
1011 dmabuf = bdeBuf1;
1012 } else if (i == 1) {
1013 hbqe = (struct lpfc_hbq_entry *)
1014 &iocbq->iocb.unsli3.
1015 sli3Words[4];
1016 size = hbqe->bde.tus.f.bdeSize;
1017 dmabuf = bdeBuf2;
1018 }
1019 if ((offset + size) > evt_dat->len)
1020 size = evt_dat->len - offset;
1021 } else {
1022 size = iocbq->iocb.un.cont64[i].
1023 tus.f.bdeSize;
1024 bde = &iocbq->iocb.un.cont64[i];
1025 dma_addr = getPaddr(bde->addrHigh,
1026 bde->addrLow);
1027 dmabuf = lpfc_sli_ringpostbuf_get(phba,
1028 pring, dma_addr);
1029 }
1030 if (!dmabuf) {
1031 lpfc_printf_log(phba, KERN_ERR,
1032 LOG_LIBDFC, "2616 No dmabuf "
1033 "found for iocbq 0x%p\n",
1034 iocbq);
1035 kfree(evt_dat->data);
1036 kfree(evt_dat);
1037 spin_lock_irqsave(&phba->ct_ev_lock,
1038 flags);
1039 lpfc_bsg_event_unref(evt);
1040 spin_unlock_irqrestore(
1041 &phba->ct_ev_lock, flags);
1042 goto error_ct_unsol_exit;
1043 }
1044 memcpy((char *)(evt_dat->data) + offset,
1045 dmabuf->virt, size);
1046 offset += size;
1047 if (evt_req_id != SLI_CT_ELX_LOOPBACK &&
1048 !(phba->sli3_options &
1049 LPFC_SLI3_HBQ_ENABLED)) {
1050 lpfc_sli_ringpostbuf_put(phba, pring,
1051 dmabuf);
1052 } else {
1053 switch (cmd) {
1054 case ELX_LOOPBACK_DATA:
1055 if (phba->sli_rev <
1056 LPFC_SLI_REV4)
1057 diag_cmd_data_free(phba,
1058 (struct lpfc_dmabufext
1059 *)dmabuf);
1060 break;
1061 case ELX_LOOPBACK_XRI_SETUP:
1062 if ((phba->sli_rev ==
1063 LPFC_SLI_REV2) ||
1064 (phba->sli3_options &
1065 LPFC_SLI3_HBQ_ENABLED
1066 )) {
1067 lpfc_in_buf_free(phba,
1068 dmabuf);
1069 } else {
1070 lpfc_post_buffer(phba,
1071 pring,
1072 1);
1073 }
1074 break;
1075 default:
1076 if (!(phba->sli3_options &
1077 LPFC_SLI3_HBQ_ENABLED))
1078 lpfc_post_buffer(phba,
1079 pring,
1080 1);
1081 break;
1082 }
1083 }
1084 }
1085 }
1086
1087 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1088 if (phba->sli_rev == LPFC_SLI_REV4) {
1089 evt_dat->immed_dat = phba->ctx_idx;
1090 phba->ctx_idx = (phba->ctx_idx + 1) % LPFC_CT_CTX_MAX;
1091 /* Provide warning for over-run of the ct_ctx array */
1092 if (phba->ct_ctx[evt_dat->immed_dat].valid ==
1093 UNSOL_VALID)
1094 lpfc_printf_log(phba, KERN_WARNING, LOG_ELS,
1095 "2717 CT context array entry "
1096 "[%d] over-run: oxid:x%x, "
1097 "sid:x%x\n", phba->ctx_idx,
1098 phba->ct_ctx[
1099 evt_dat->immed_dat].oxid,
1100 phba->ct_ctx[
1101 evt_dat->immed_dat].SID);
1102 phba->ct_ctx[evt_dat->immed_dat].rxid =
1103 piocbq->iocb.ulpContext;
1104 phba->ct_ctx[evt_dat->immed_dat].oxid =
1105 piocbq->iocb.unsli3.rcvsli3.ox_id;
1106 phba->ct_ctx[evt_dat->immed_dat].SID =
1107 piocbq->iocb.un.rcvels.remoteID;
1108 phba->ct_ctx[evt_dat->immed_dat].valid = UNSOL_VALID;
1109 } else
1110 evt_dat->immed_dat = piocbq->iocb.ulpContext;
1111
1112 evt_dat->type = FC_REG_CT_EVENT;
1113 list_add(&evt_dat->node, &evt->events_to_see);
1114 if (evt_req_id == SLI_CT_ELX_LOOPBACK) {
1115 wake_up_interruptible(&evt->wq);
1116 lpfc_bsg_event_unref(evt);
1117 break;
1118 }
1119
1120 list_move(evt->events_to_see.prev, &evt->events_to_get);
1121
1122 dd_data = (struct bsg_job_data *)evt->dd_data;
1123 job = dd_data->set_job;
1124 dd_data->set_job = NULL;
1125 lpfc_bsg_event_unref(evt);
1126 if (job) {
1127 job->reply->reply_payload_rcv_len = size;
1128 /* make error code available to userspace */
1129 job->reply->result = 0;
1130 job->dd_data = NULL;
1131 /* complete the job back to userspace */
1132 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1133 job->job_done(job);
1134 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1135 }
1136 }
1137 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1138
1139 error_ct_unsol_exit:
1140 if (!list_empty(&head))
1141 list_del(&head);
1142 if ((phba->sli_rev < LPFC_SLI_REV4) &&
1143 (evt_req_id == SLI_CT_ELX_LOOPBACK))
1144 return 0;
1145 return 1;
1146 }
1147
1148 /**
1149 * lpfc_bsg_ct_unsol_abort - handler ct abort to management plane
1150 * @phba: Pointer to HBA context object.
1151 * @dmabuf: pointer to a dmabuf that describes the FC sequence
1152 *
1153 * This function handles abort to the CT command toward management plane
1154 * for SLI4 port.
1155 *
1156 * If the pending context of a CT command to management plane present, clears
1157 * such context and returns 1 for handled; otherwise, it returns 0 indicating
1158 * no context exists.
1159 **/
1160 int
1161 lpfc_bsg_ct_unsol_abort(struct lpfc_hba *phba, struct hbq_dmabuf *dmabuf)
1162 {
1163 struct fc_frame_header fc_hdr;
1164 struct fc_frame_header *fc_hdr_ptr = &fc_hdr;
1165 int ctx_idx, handled = 0;
1166 uint16_t oxid, rxid;
1167 uint32_t sid;
1168
1169 memcpy(fc_hdr_ptr, dmabuf->hbuf.virt, sizeof(struct fc_frame_header));
1170 sid = sli4_sid_from_fc_hdr(fc_hdr_ptr);
1171 oxid = be16_to_cpu(fc_hdr_ptr->fh_ox_id);
1172 rxid = be16_to_cpu(fc_hdr_ptr->fh_rx_id);
1173
1174 for (ctx_idx = 0; ctx_idx < LPFC_CT_CTX_MAX; ctx_idx++) {
1175 if (phba->ct_ctx[ctx_idx].valid != UNSOL_VALID)
1176 continue;
1177 if (phba->ct_ctx[ctx_idx].rxid != rxid)
1178 continue;
1179 if (phba->ct_ctx[ctx_idx].oxid != oxid)
1180 continue;
1181 if (phba->ct_ctx[ctx_idx].SID != sid)
1182 continue;
1183 phba->ct_ctx[ctx_idx].valid = UNSOL_INVALID;
1184 handled = 1;
1185 }
1186 return handled;
1187 }
1188
1189 /**
1190 * lpfc_bsg_hba_set_event - process a SET_EVENT bsg vendor command
1191 * @job: SET_EVENT fc_bsg_job
1192 **/
1193 static int
1194 lpfc_bsg_hba_set_event(struct fc_bsg_job *job)
1195 {
1196 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
1197 struct lpfc_hba *phba = vport->phba;
1198 struct set_ct_event *event_req;
1199 struct lpfc_bsg_event *evt;
1200 int rc = 0;
1201 struct bsg_job_data *dd_data = NULL;
1202 uint32_t ev_mask;
1203 unsigned long flags;
1204
1205 if (job->request_len <
1206 sizeof(struct fc_bsg_request) + sizeof(struct set_ct_event)) {
1207 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1208 "2612 Received SET_CT_EVENT below minimum "
1209 "size\n");
1210 rc = -EINVAL;
1211 goto job_error;
1212 }
1213
1214 event_req = (struct set_ct_event *)
1215 job->request->rqst_data.h_vendor.vendor_cmd;
1216 ev_mask = ((uint32_t)(unsigned long)event_req->type_mask &
1217 FC_REG_EVENT_MASK);
1218 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1219 list_for_each_entry(evt, &phba->ct_ev_waiters, node) {
1220 if (evt->reg_id == event_req->ev_reg_id) {
1221 lpfc_bsg_event_ref(evt);
1222 evt->wait_time_stamp = jiffies;
1223 dd_data = (struct bsg_job_data *)evt->dd_data;
1224 break;
1225 }
1226 }
1227 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1228
1229 if (&evt->node == &phba->ct_ev_waiters) {
1230 /* no event waiting struct yet - first call */
1231 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
1232 if (dd_data == NULL) {
1233 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1234 "2734 Failed allocation of dd_data\n");
1235 rc = -ENOMEM;
1236 goto job_error;
1237 }
1238 evt = lpfc_bsg_event_new(ev_mask, event_req->ev_reg_id,
1239 event_req->ev_req_id);
1240 if (!evt) {
1241 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1242 "2617 Failed allocation of event "
1243 "waiter\n");
1244 rc = -ENOMEM;
1245 goto job_error;
1246 }
1247 dd_data->type = TYPE_EVT;
1248 dd_data->set_job = NULL;
1249 dd_data->context_un.evt = evt;
1250 evt->dd_data = (void *)dd_data;
1251 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1252 list_add(&evt->node, &phba->ct_ev_waiters);
1253 lpfc_bsg_event_ref(evt);
1254 evt->wait_time_stamp = jiffies;
1255 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1256 }
1257
1258 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1259 evt->waiting = 1;
1260 dd_data->set_job = job; /* for unsolicited command */
1261 job->dd_data = dd_data; /* for fc transport timeout callback*/
1262 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1263 return 0; /* call job done later */
1264
1265 job_error:
1266 if (dd_data != NULL)
1267 kfree(dd_data);
1268
1269 job->dd_data = NULL;
1270 return rc;
1271 }
1272
1273 /**
1274 * lpfc_bsg_hba_get_event - process a GET_EVENT bsg vendor command
1275 * @job: GET_EVENT fc_bsg_job
1276 **/
1277 static int
1278 lpfc_bsg_hba_get_event(struct fc_bsg_job *job)
1279 {
1280 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
1281 struct lpfc_hba *phba = vport->phba;
1282 struct get_ct_event *event_req;
1283 struct get_ct_event_reply *event_reply;
1284 struct lpfc_bsg_event *evt, *evt_next;
1285 struct event_data *evt_dat = NULL;
1286 unsigned long flags;
1287 uint32_t rc = 0;
1288
1289 if (job->request_len <
1290 sizeof(struct fc_bsg_request) + sizeof(struct get_ct_event)) {
1291 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1292 "2613 Received GET_CT_EVENT request below "
1293 "minimum size\n");
1294 rc = -EINVAL;
1295 goto job_error;
1296 }
1297
1298 event_req = (struct get_ct_event *)
1299 job->request->rqst_data.h_vendor.vendor_cmd;
1300
1301 event_reply = (struct get_ct_event_reply *)
1302 job->reply->reply_data.vendor_reply.vendor_rsp;
1303 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1304 list_for_each_entry_safe(evt, evt_next, &phba->ct_ev_waiters, node) {
1305 if (evt->reg_id == event_req->ev_reg_id) {
1306 if (list_empty(&evt->events_to_get))
1307 break;
1308 lpfc_bsg_event_ref(evt);
1309 evt->wait_time_stamp = jiffies;
1310 evt_dat = list_entry(evt->events_to_get.prev,
1311 struct event_data, node);
1312 list_del(&evt_dat->node);
1313 break;
1314 }
1315 }
1316 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1317
1318 /* The app may continue to ask for event data until it gets
1319 * an error indicating that there isn't anymore
1320 */
1321 if (evt_dat == NULL) {
1322 job->reply->reply_payload_rcv_len = 0;
1323 rc = -ENOENT;
1324 goto job_error;
1325 }
1326
1327 if (evt_dat->len > job->request_payload.payload_len) {
1328 evt_dat->len = job->request_payload.payload_len;
1329 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1330 "2618 Truncated event data at %d "
1331 "bytes\n",
1332 job->request_payload.payload_len);
1333 }
1334
1335 event_reply->type = evt_dat->type;
1336 event_reply->immed_data = evt_dat->immed_dat;
1337 if (evt_dat->len > 0)
1338 job->reply->reply_payload_rcv_len =
1339 sg_copy_from_buffer(job->request_payload.sg_list,
1340 job->request_payload.sg_cnt,
1341 evt_dat->data, evt_dat->len);
1342 else
1343 job->reply->reply_payload_rcv_len = 0;
1344
1345 if (evt_dat) {
1346 kfree(evt_dat->data);
1347 kfree(evt_dat);
1348 }
1349
1350 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1351 lpfc_bsg_event_unref(evt);
1352 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1353 job->dd_data = NULL;
1354 job->reply->result = 0;
1355 job->job_done(job);
1356 return 0;
1357
1358 job_error:
1359 job->dd_data = NULL;
1360 job->reply->result = rc;
1361 return rc;
1362 }
1363
1364 /**
1365 * lpfc_issue_ct_rsp_cmp - lpfc_issue_ct_rsp's completion handler
1366 * @phba: Pointer to HBA context object.
1367 * @cmdiocbq: Pointer to command iocb.
1368 * @rspiocbq: Pointer to response iocb.
1369 *
1370 * This function is the completion handler for iocbs issued using
1371 * lpfc_issue_ct_rsp_cmp function. This function is called by the
1372 * ring event handler function without any lock held. This function
1373 * can be called from both worker thread context and interrupt
1374 * context. This function also can be called from other thread which
1375 * cleans up the SLI layer objects.
1376 * This function copy the contents of the response iocb to the
1377 * response iocb memory object provided by the caller of
1378 * lpfc_sli_issue_iocb_wait and then wakes up the thread which
1379 * sleeps for the iocb completion.
1380 **/
1381 static void
1382 lpfc_issue_ct_rsp_cmp(struct lpfc_hba *phba,
1383 struct lpfc_iocbq *cmdiocbq,
1384 struct lpfc_iocbq *rspiocbq)
1385 {
1386 struct bsg_job_data *dd_data;
1387 struct fc_bsg_job *job;
1388 IOCB_t *rsp;
1389 struct lpfc_dmabuf *bmp, *cmp;
1390 struct lpfc_nodelist *ndlp;
1391 unsigned long flags;
1392 int rc = 0;
1393
1394 dd_data = cmdiocbq->context1;
1395
1396 /* Determine if job has been aborted */
1397 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1398 job = dd_data->set_job;
1399 if (job) {
1400 /* Prevent timeout handling from trying to abort job */
1401 job->dd_data = NULL;
1402 }
1403 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1404
1405 /* Close the timeout handler abort window */
1406 spin_lock_irqsave(&phba->hbalock, flags);
1407 cmdiocbq->iocb_flag &= ~LPFC_IO_CMD_OUTSTANDING;
1408 spin_unlock_irqrestore(&phba->hbalock, flags);
1409
1410 ndlp = dd_data->context_un.iocb.ndlp;
1411 cmp = cmdiocbq->context2;
1412 bmp = cmdiocbq->context3;
1413 rsp = &rspiocbq->iocb;
1414
1415 /* Copy the completed job data or set the error status */
1416
1417 if (job) {
1418 if (rsp->ulpStatus) {
1419 if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
1420 switch (rsp->un.ulpWord[4] & IOERR_PARAM_MASK) {
1421 case IOERR_SEQUENCE_TIMEOUT:
1422 rc = -ETIMEDOUT;
1423 break;
1424 case IOERR_INVALID_RPI:
1425 rc = -EFAULT;
1426 break;
1427 default:
1428 rc = -EACCES;
1429 break;
1430 }
1431 } else {
1432 rc = -EACCES;
1433 }
1434 } else {
1435 job->reply->reply_payload_rcv_len = 0;
1436 }
1437 }
1438
1439 lpfc_free_bsg_buffers(phba, cmp);
1440 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
1441 kfree(bmp);
1442 lpfc_sli_release_iocbq(phba, cmdiocbq);
1443 lpfc_nlp_put(ndlp);
1444 kfree(dd_data);
1445
1446 /* Complete the job if the job is still active */
1447
1448 if (job) {
1449 job->reply->result = rc;
1450 job->job_done(job);
1451 }
1452 return;
1453 }
1454
1455 /**
1456 * lpfc_issue_ct_rsp - issue a ct response
1457 * @phba: Pointer to HBA context object.
1458 * @job: Pointer to the job object.
1459 * @tag: tag index value into the ports context exchange array.
1460 * @bmp: Pointer to a dma buffer descriptor.
1461 * @num_entry: Number of enties in the bde.
1462 **/
1463 static int
1464 lpfc_issue_ct_rsp(struct lpfc_hba *phba, struct fc_bsg_job *job, uint32_t tag,
1465 struct lpfc_dmabuf *cmp, struct lpfc_dmabuf *bmp,
1466 int num_entry)
1467 {
1468 IOCB_t *icmd;
1469 struct lpfc_iocbq *ctiocb = NULL;
1470 int rc = 0;
1471 struct lpfc_nodelist *ndlp = NULL;
1472 struct bsg_job_data *dd_data;
1473 unsigned long flags;
1474 uint32_t creg_val;
1475
1476 /* allocate our bsg tracking structure */
1477 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
1478 if (!dd_data) {
1479 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1480 "2736 Failed allocation of dd_data\n");
1481 rc = -ENOMEM;
1482 goto no_dd_data;
1483 }
1484
1485 /* Allocate buffer for command iocb */
1486 ctiocb = lpfc_sli_get_iocbq(phba);
1487 if (!ctiocb) {
1488 rc = -ENOMEM;
1489 goto no_ctiocb;
1490 }
1491
1492 icmd = &ctiocb->iocb;
1493 icmd->un.xseq64.bdl.ulpIoTag32 = 0;
1494 icmd->un.xseq64.bdl.addrHigh = putPaddrHigh(bmp->phys);
1495 icmd->un.xseq64.bdl.addrLow = putPaddrLow(bmp->phys);
1496 icmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
1497 icmd->un.xseq64.bdl.bdeSize = (num_entry * sizeof(struct ulp_bde64));
1498 icmd->un.xseq64.w5.hcsw.Fctl = (LS | LA);
1499 icmd->un.xseq64.w5.hcsw.Dfctl = 0;
1500 icmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_SOL_CTL;
1501 icmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT;
1502
1503 /* Fill in rest of iocb */
1504 icmd->ulpCommand = CMD_XMIT_SEQUENCE64_CX;
1505 icmd->ulpBdeCount = 1;
1506 icmd->ulpLe = 1;
1507 icmd->ulpClass = CLASS3;
1508 if (phba->sli_rev == LPFC_SLI_REV4) {
1509 /* Do not issue unsol response if oxid not marked as valid */
1510 if (phba->ct_ctx[tag].valid != UNSOL_VALID) {
1511 rc = IOCB_ERROR;
1512 goto issue_ct_rsp_exit;
1513 }
1514 icmd->ulpContext = phba->ct_ctx[tag].rxid;
1515 icmd->unsli3.rcvsli3.ox_id = phba->ct_ctx[tag].oxid;
1516 ndlp = lpfc_findnode_did(phba->pport, phba->ct_ctx[tag].SID);
1517 if (!ndlp) {
1518 lpfc_printf_log(phba, KERN_WARNING, LOG_ELS,
1519 "2721 ndlp null for oxid %x SID %x\n",
1520 icmd->ulpContext,
1521 phba->ct_ctx[tag].SID);
1522 rc = IOCB_ERROR;
1523 goto issue_ct_rsp_exit;
1524 }
1525
1526 /* Check if the ndlp is active */
1527 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
1528 rc = IOCB_ERROR;
1529 goto issue_ct_rsp_exit;
1530 }
1531
1532 /* get a refernece count so the ndlp doesn't go away while
1533 * we respond
1534 */
1535 if (!lpfc_nlp_get(ndlp)) {
1536 rc = IOCB_ERROR;
1537 goto issue_ct_rsp_exit;
1538 }
1539
1540 icmd->un.ulpWord[3] =
1541 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
1542
1543 /* The exchange is done, mark the entry as invalid */
1544 phba->ct_ctx[tag].valid = UNSOL_INVALID;
1545 } else
1546 icmd->ulpContext = (ushort) tag;
1547
1548 icmd->ulpTimeout = phba->fc_ratov * 2;
1549
1550 /* Xmit CT response on exchange <xid> */
1551 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1552 "2722 Xmit CT response on exchange x%x Data: x%x x%x x%x\n",
1553 icmd->ulpContext, icmd->ulpIoTag, tag, phba->link_state);
1554
1555 ctiocb->iocb_cmpl = NULL;
1556 ctiocb->iocb_flag |= LPFC_IO_LIBDFC;
1557 ctiocb->vport = phba->pport;
1558 ctiocb->context1 = dd_data;
1559 ctiocb->context2 = cmp;
1560 ctiocb->context3 = bmp;
1561 ctiocb->context_un.ndlp = ndlp;
1562 ctiocb->iocb_cmpl = lpfc_issue_ct_rsp_cmp;
1563
1564 dd_data->type = TYPE_IOCB;
1565 dd_data->set_job = job;
1566 dd_data->context_un.iocb.cmdiocbq = ctiocb;
1567 dd_data->context_un.iocb.ndlp = ndlp;
1568 dd_data->context_un.iocb.rmp = NULL;
1569 job->dd_data = dd_data;
1570
1571 if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
1572 if (lpfc_readl(phba->HCregaddr, &creg_val)) {
1573 rc = -IOCB_ERROR;
1574 goto issue_ct_rsp_exit;
1575 }
1576 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
1577 writel(creg_val, phba->HCregaddr);
1578 readl(phba->HCregaddr); /* flush */
1579 }
1580
1581 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, ctiocb, 0);
1582
1583 if (rc == IOCB_SUCCESS) {
1584 spin_lock_irqsave(&phba->hbalock, flags);
1585 /* make sure the I/O had not been completed/released */
1586 if (ctiocb->iocb_flag & LPFC_IO_LIBDFC) {
1587 /* open up abort window to timeout handler */
1588 ctiocb->iocb_flag |= LPFC_IO_CMD_OUTSTANDING;
1589 }
1590 spin_unlock_irqrestore(&phba->hbalock, flags);
1591 return 0; /* done for now */
1592 }
1593
1594 /* iocb failed so cleanup */
1595 job->dd_data = NULL;
1596
1597 issue_ct_rsp_exit:
1598 lpfc_sli_release_iocbq(phba, ctiocb);
1599 no_ctiocb:
1600 kfree(dd_data);
1601 no_dd_data:
1602 return rc;
1603 }
1604
1605 /**
1606 * lpfc_bsg_send_mgmt_rsp - process a SEND_MGMT_RESP bsg vendor command
1607 * @job: SEND_MGMT_RESP fc_bsg_job
1608 **/
1609 static int
1610 lpfc_bsg_send_mgmt_rsp(struct fc_bsg_job *job)
1611 {
1612 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
1613 struct lpfc_hba *phba = vport->phba;
1614 struct send_mgmt_resp *mgmt_resp = (struct send_mgmt_resp *)
1615 job->request->rqst_data.h_vendor.vendor_cmd;
1616 struct ulp_bde64 *bpl;
1617 struct lpfc_dmabuf *bmp = NULL, *cmp = NULL;
1618 int bpl_entries;
1619 uint32_t tag = mgmt_resp->tag;
1620 unsigned long reqbfrcnt =
1621 (unsigned long)job->request_payload.payload_len;
1622 int rc = 0;
1623
1624 /* in case no data is transferred */
1625 job->reply->reply_payload_rcv_len = 0;
1626
1627 if (!reqbfrcnt || (reqbfrcnt > (80 * BUF_SZ_4K))) {
1628 rc = -ERANGE;
1629 goto send_mgmt_rsp_exit;
1630 }
1631
1632 bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
1633 if (!bmp) {
1634 rc = -ENOMEM;
1635 goto send_mgmt_rsp_exit;
1636 }
1637
1638 bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys);
1639 if (!bmp->virt) {
1640 rc = -ENOMEM;
1641 goto send_mgmt_rsp_free_bmp;
1642 }
1643
1644 INIT_LIST_HEAD(&bmp->list);
1645 bpl = (struct ulp_bde64 *) bmp->virt;
1646 bpl_entries = (LPFC_BPL_SIZE/sizeof(struct ulp_bde64));
1647 cmp = lpfc_alloc_bsg_buffers(phba, job->request_payload.payload_len,
1648 1, bpl, &bpl_entries);
1649 if (!cmp) {
1650 rc = -ENOMEM;
1651 goto send_mgmt_rsp_free_bmp;
1652 }
1653 lpfc_bsg_copy_data(cmp, &job->request_payload,
1654 job->request_payload.payload_len, 1);
1655
1656 rc = lpfc_issue_ct_rsp(phba, job, tag, cmp, bmp, bpl_entries);
1657
1658 if (rc == IOCB_SUCCESS)
1659 return 0; /* done for now */
1660
1661 rc = -EACCES;
1662
1663 lpfc_free_bsg_buffers(phba, cmp);
1664
1665 send_mgmt_rsp_free_bmp:
1666 if (bmp->virt)
1667 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
1668 kfree(bmp);
1669 send_mgmt_rsp_exit:
1670 /* make error code available to userspace */
1671 job->reply->result = rc;
1672 job->dd_data = NULL;
1673 return rc;
1674 }
1675
1676 /**
1677 * lpfc_bsg_diag_mode_enter - process preparing into device diag loopback mode
1678 * @phba: Pointer to HBA context object.
1679 *
1680 * This function is responsible for preparing driver for diag loopback
1681 * on device.
1682 */
1683 static int
1684 lpfc_bsg_diag_mode_enter(struct lpfc_hba *phba)
1685 {
1686 struct lpfc_vport **vports;
1687 struct Scsi_Host *shost;
1688 struct lpfc_sli *psli;
1689 struct lpfc_sli_ring *pring;
1690 int i = 0;
1691
1692 psli = &phba->sli;
1693 if (!psli)
1694 return -ENODEV;
1695
1696 pring = &psli->ring[LPFC_FCP_RING];
1697 if (!pring)
1698 return -ENODEV;
1699
1700 if ((phba->link_state == LPFC_HBA_ERROR) ||
1701 (psli->sli_flag & LPFC_BLOCK_MGMT_IO) ||
1702 (!(psli->sli_flag & LPFC_SLI_ACTIVE)))
1703 return -EACCES;
1704
1705 vports = lpfc_create_vport_work_array(phba);
1706 if (vports) {
1707 for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
1708 shost = lpfc_shost_from_vport(vports[i]);
1709 scsi_block_requests(shost);
1710 }
1711 lpfc_destroy_vport_work_array(phba, vports);
1712 } else {
1713 shost = lpfc_shost_from_vport(phba->pport);
1714 scsi_block_requests(shost);
1715 }
1716
1717 while (!list_empty(&pring->txcmplq)) {
1718 if (i++ > 500) /* wait up to 5 seconds */
1719 break;
1720 msleep(10);
1721 }
1722 return 0;
1723 }
1724
1725 /**
1726 * lpfc_bsg_diag_mode_exit - exit process from device diag loopback mode
1727 * @phba: Pointer to HBA context object.
1728 *
1729 * This function is responsible for driver exit processing of setting up
1730 * diag loopback mode on device.
1731 */
1732 static void
1733 lpfc_bsg_diag_mode_exit(struct lpfc_hba *phba)
1734 {
1735 struct Scsi_Host *shost;
1736 struct lpfc_vport **vports;
1737 int i;
1738
1739 vports = lpfc_create_vport_work_array(phba);
1740 if (vports) {
1741 for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
1742 shost = lpfc_shost_from_vport(vports[i]);
1743 scsi_unblock_requests(shost);
1744 }
1745 lpfc_destroy_vport_work_array(phba, vports);
1746 } else {
1747 shost = lpfc_shost_from_vport(phba->pport);
1748 scsi_unblock_requests(shost);
1749 }
1750 return;
1751 }
1752
1753 /**
1754 * lpfc_sli3_bsg_diag_loopback_mode - process an sli3 bsg vendor command
1755 * @phba: Pointer to HBA context object.
1756 * @job: LPFC_BSG_VENDOR_DIAG_MODE
1757 *
1758 * This function is responsible for placing an sli3 port into diagnostic
1759 * loopback mode in order to perform a diagnostic loopback test.
1760 * All new scsi requests are blocked, a small delay is used to allow the
1761 * scsi requests to complete then the link is brought down. If the link is
1762 * is placed in loopback mode then scsi requests are again allowed
1763 * so the scsi mid-layer doesn't give up on the port.
1764 * All of this is done in-line.
1765 */
1766 static int
1767 lpfc_sli3_bsg_diag_loopback_mode(struct lpfc_hba *phba, struct fc_bsg_job *job)
1768 {
1769 struct diag_mode_set *loopback_mode;
1770 uint32_t link_flags;
1771 uint32_t timeout;
1772 LPFC_MBOXQ_t *pmboxq = NULL;
1773 int mbxstatus = MBX_SUCCESS;
1774 int i = 0;
1775 int rc = 0;
1776
1777 /* no data to return just the return code */
1778 job->reply->reply_payload_rcv_len = 0;
1779
1780 if (job->request_len < sizeof(struct fc_bsg_request) +
1781 sizeof(struct diag_mode_set)) {
1782 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1783 "2738 Received DIAG MODE request size:%d "
1784 "below the minimum size:%d\n",
1785 job->request_len,
1786 (int)(sizeof(struct fc_bsg_request) +
1787 sizeof(struct diag_mode_set)));
1788 rc = -EINVAL;
1789 goto job_error;
1790 }
1791
1792 rc = lpfc_bsg_diag_mode_enter(phba);
1793 if (rc)
1794 goto job_error;
1795
1796 /* bring the link to diagnostic mode */
1797 loopback_mode = (struct diag_mode_set *)
1798 job->request->rqst_data.h_vendor.vendor_cmd;
1799 link_flags = loopback_mode->type;
1800 timeout = loopback_mode->timeout * 100;
1801
1802 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1803 if (!pmboxq) {
1804 rc = -ENOMEM;
1805 goto loopback_mode_exit;
1806 }
1807 memset((void *)pmboxq, 0, sizeof(LPFC_MBOXQ_t));
1808 pmboxq->u.mb.mbxCommand = MBX_DOWN_LINK;
1809 pmboxq->u.mb.mbxOwner = OWN_HOST;
1810
1811 mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO);
1812
1813 if ((mbxstatus == MBX_SUCCESS) && (pmboxq->u.mb.mbxStatus == 0)) {
1814 /* wait for link down before proceeding */
1815 i = 0;
1816 while (phba->link_state != LPFC_LINK_DOWN) {
1817 if (i++ > timeout) {
1818 rc = -ETIMEDOUT;
1819 goto loopback_mode_exit;
1820 }
1821 msleep(10);
1822 }
1823
1824 memset((void *)pmboxq, 0, sizeof(LPFC_MBOXQ_t));
1825 if (link_flags == INTERNAL_LOOP_BACK)
1826 pmboxq->u.mb.un.varInitLnk.link_flags = FLAGS_LOCAL_LB;
1827 else
1828 pmboxq->u.mb.un.varInitLnk.link_flags =
1829 FLAGS_TOPOLOGY_MODE_LOOP;
1830
1831 pmboxq->u.mb.mbxCommand = MBX_INIT_LINK;
1832 pmboxq->u.mb.mbxOwner = OWN_HOST;
1833
1834 mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq,
1835 LPFC_MBOX_TMO);
1836
1837 if ((mbxstatus != MBX_SUCCESS) || (pmboxq->u.mb.mbxStatus))
1838 rc = -ENODEV;
1839 else {
1840 spin_lock_irq(&phba->hbalock);
1841 phba->link_flag |= LS_LOOPBACK_MODE;
1842 spin_unlock_irq(&phba->hbalock);
1843 /* wait for the link attention interrupt */
1844 msleep(100);
1845
1846 i = 0;
1847 while (phba->link_state != LPFC_HBA_READY) {
1848 if (i++ > timeout) {
1849 rc = -ETIMEDOUT;
1850 break;
1851 }
1852
1853 msleep(10);
1854 }
1855 }
1856
1857 } else
1858 rc = -ENODEV;
1859
1860 loopback_mode_exit:
1861 lpfc_bsg_diag_mode_exit(phba);
1862
1863 /*
1864 * Let SLI layer release mboxq if mbox command completed after timeout.
1865 */
1866 if (pmboxq && mbxstatus != MBX_TIMEOUT)
1867 mempool_free(pmboxq, phba->mbox_mem_pool);
1868
1869 job_error:
1870 /* make error code available to userspace */
1871 job->reply->result = rc;
1872 /* complete the job back to userspace if no error */
1873 if (rc == 0)
1874 job->job_done(job);
1875 return rc;
1876 }
1877
1878 /**
1879 * lpfc_sli4_bsg_set_link_diag_state - set sli4 link diag state
1880 * @phba: Pointer to HBA context object.
1881 * @diag: Flag for set link to diag or nomral operation state.
1882 *
1883 * This function is responsible for issuing a sli4 mailbox command for setting
1884 * link to either diag state or normal operation state.
1885 */
1886 static int
1887 lpfc_sli4_bsg_set_link_diag_state(struct lpfc_hba *phba, uint32_t diag)
1888 {
1889 LPFC_MBOXQ_t *pmboxq;
1890 struct lpfc_mbx_set_link_diag_state *link_diag_state;
1891 uint32_t req_len, alloc_len;
1892 int mbxstatus = MBX_SUCCESS, rc;
1893
1894 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1895 if (!pmboxq)
1896 return -ENOMEM;
1897
1898 req_len = (sizeof(struct lpfc_mbx_set_link_diag_state) -
1899 sizeof(struct lpfc_sli4_cfg_mhdr));
1900 alloc_len = lpfc_sli4_config(phba, pmboxq, LPFC_MBOX_SUBSYSTEM_FCOE,
1901 LPFC_MBOX_OPCODE_FCOE_LINK_DIAG_STATE,
1902 req_len, LPFC_SLI4_MBX_EMBED);
1903 if (alloc_len != req_len) {
1904 rc = -ENOMEM;
1905 goto link_diag_state_set_out;
1906 }
1907 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
1908 "3128 Set link to diagnostic state:x%x (x%x/x%x)\n",
1909 diag, phba->sli4_hba.lnk_info.lnk_tp,
1910 phba->sli4_hba.lnk_info.lnk_no);
1911
1912 link_diag_state = &pmboxq->u.mqe.un.link_diag_state;
1913 bf_set(lpfc_mbx_set_diag_state_diag_bit_valid, &link_diag_state->u.req,
1914 LPFC_DIAG_STATE_DIAG_BIT_VALID_CHANGE);
1915 bf_set(lpfc_mbx_set_diag_state_link_num, &link_diag_state->u.req,
1916 phba->sli4_hba.lnk_info.lnk_no);
1917 bf_set(lpfc_mbx_set_diag_state_link_type, &link_diag_state->u.req,
1918 phba->sli4_hba.lnk_info.lnk_tp);
1919 if (diag)
1920 bf_set(lpfc_mbx_set_diag_state_diag,
1921 &link_diag_state->u.req, 1);
1922 else
1923 bf_set(lpfc_mbx_set_diag_state_diag,
1924 &link_diag_state->u.req, 0);
1925
1926 mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO);
1927
1928 if ((mbxstatus == MBX_SUCCESS) && (pmboxq->u.mb.mbxStatus == 0))
1929 rc = 0;
1930 else
1931 rc = -ENODEV;
1932
1933 link_diag_state_set_out:
1934 if (pmboxq && (mbxstatus != MBX_TIMEOUT))
1935 mempool_free(pmboxq, phba->mbox_mem_pool);
1936
1937 return rc;
1938 }
1939
1940 /**
1941 * lpfc_sli4_bsg_set_internal_loopback - set sli4 internal loopback diagnostic
1942 * @phba: Pointer to HBA context object.
1943 *
1944 * This function is responsible for issuing a sli4 mailbox command for setting
1945 * up internal loopback diagnostic.
1946 */
1947 static int
1948 lpfc_sli4_bsg_set_internal_loopback(struct lpfc_hba *phba)
1949 {
1950 LPFC_MBOXQ_t *pmboxq;
1951 uint32_t req_len, alloc_len;
1952 struct lpfc_mbx_set_link_diag_loopback *link_diag_loopback;
1953 int mbxstatus = MBX_SUCCESS, rc = 0;
1954
1955 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1956 if (!pmboxq)
1957 return -ENOMEM;
1958 req_len = (sizeof(struct lpfc_mbx_set_link_diag_loopback) -
1959 sizeof(struct lpfc_sli4_cfg_mhdr));
1960 alloc_len = lpfc_sli4_config(phba, pmboxq, LPFC_MBOX_SUBSYSTEM_FCOE,
1961 LPFC_MBOX_OPCODE_FCOE_LINK_DIAG_LOOPBACK,
1962 req_len, LPFC_SLI4_MBX_EMBED);
1963 if (alloc_len != req_len) {
1964 mempool_free(pmboxq, phba->mbox_mem_pool);
1965 return -ENOMEM;
1966 }
1967 link_diag_loopback = &pmboxq->u.mqe.un.link_diag_loopback;
1968 bf_set(lpfc_mbx_set_diag_state_link_num,
1969 &link_diag_loopback->u.req, phba->sli4_hba.lnk_info.lnk_no);
1970 bf_set(lpfc_mbx_set_diag_state_link_type,
1971 &link_diag_loopback->u.req, phba->sli4_hba.lnk_info.lnk_tp);
1972 bf_set(lpfc_mbx_set_diag_lpbk_type, &link_diag_loopback->u.req,
1973 LPFC_DIAG_LOOPBACK_TYPE_INTERNAL);
1974
1975 mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO);
1976 if ((mbxstatus != MBX_SUCCESS) || (pmboxq->u.mb.mbxStatus)) {
1977 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1978 "3127 Failed setup loopback mode mailbox "
1979 "command, rc:x%x, status:x%x\n", mbxstatus,
1980 pmboxq->u.mb.mbxStatus);
1981 rc = -ENODEV;
1982 }
1983 if (pmboxq && (mbxstatus != MBX_TIMEOUT))
1984 mempool_free(pmboxq, phba->mbox_mem_pool);
1985 return rc;
1986 }
1987
1988 /**
1989 * lpfc_sli4_diag_fcport_reg_setup - setup port registrations for diagnostic
1990 * @phba: Pointer to HBA context object.
1991 *
1992 * This function set up SLI4 FC port registrations for diagnostic run, which
1993 * includes all the rpis, vfi, and also vpi.
1994 */
1995 static int
1996 lpfc_sli4_diag_fcport_reg_setup(struct lpfc_hba *phba)
1997 {
1998 int rc;
1999
2000 if (phba->pport->fc_flag & FC_VFI_REGISTERED) {
2001 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2002 "3136 Port still had vfi registered: "
2003 "mydid:x%x, fcfi:%d, vfi:%d, vpi:%d\n",
2004 phba->pport->fc_myDID, phba->fcf.fcfi,
2005 phba->sli4_hba.vfi_ids[phba->pport->vfi],
2006 phba->vpi_ids[phba->pport->vpi]);
2007 return -EINVAL;
2008 }
2009 rc = lpfc_issue_reg_vfi(phba->pport);
2010 return rc;
2011 }
2012
2013 /**
2014 * lpfc_sli4_bsg_diag_loopback_mode - process an sli4 bsg vendor command
2015 * @phba: Pointer to HBA context object.
2016 * @job: LPFC_BSG_VENDOR_DIAG_MODE
2017 *
2018 * This function is responsible for placing an sli4 port into diagnostic
2019 * loopback mode in order to perform a diagnostic loopback test.
2020 */
2021 static int
2022 lpfc_sli4_bsg_diag_loopback_mode(struct lpfc_hba *phba, struct fc_bsg_job *job)
2023 {
2024 struct diag_mode_set *loopback_mode;
2025 uint32_t link_flags, timeout;
2026 int i, rc = 0;
2027
2028 /* no data to return just the return code */
2029 job->reply->reply_payload_rcv_len = 0;
2030
2031 if (job->request_len < sizeof(struct fc_bsg_request) +
2032 sizeof(struct diag_mode_set)) {
2033 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2034 "3011 Received DIAG MODE request size:%d "
2035 "below the minimum size:%d\n",
2036 job->request_len,
2037 (int)(sizeof(struct fc_bsg_request) +
2038 sizeof(struct diag_mode_set)));
2039 rc = -EINVAL;
2040 goto job_error;
2041 }
2042
2043 rc = lpfc_bsg_diag_mode_enter(phba);
2044 if (rc)
2045 goto job_error;
2046
2047 /* indicate we are in loobpack diagnostic mode */
2048 spin_lock_irq(&phba->hbalock);
2049 phba->link_flag |= LS_LOOPBACK_MODE;
2050 spin_unlock_irq(&phba->hbalock);
2051
2052 /* reset port to start frome scratch */
2053 rc = lpfc_selective_reset(phba);
2054 if (rc)
2055 goto job_error;
2056
2057 /* bring the link to diagnostic mode */
2058 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
2059 "3129 Bring link to diagnostic state.\n");
2060 loopback_mode = (struct diag_mode_set *)
2061 job->request->rqst_data.h_vendor.vendor_cmd;
2062 link_flags = loopback_mode->type;
2063 timeout = loopback_mode->timeout * 100;
2064
2065 rc = lpfc_sli4_bsg_set_link_diag_state(phba, 1);
2066 if (rc) {
2067 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2068 "3130 Failed to bring link to diagnostic "
2069 "state, rc:x%x\n", rc);
2070 goto loopback_mode_exit;
2071 }
2072
2073 /* wait for link down before proceeding */
2074 i = 0;
2075 while (phba->link_state != LPFC_LINK_DOWN) {
2076 if (i++ > timeout) {
2077 rc = -ETIMEDOUT;
2078 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
2079 "3131 Timeout waiting for link to "
2080 "diagnostic mode, timeout:%d ms\n",
2081 timeout * 10);
2082 goto loopback_mode_exit;
2083 }
2084 msleep(10);
2085 }
2086
2087 /* set up loopback mode */
2088 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
2089 "3132 Set up loopback mode:x%x\n", link_flags);
2090
2091 if (link_flags == INTERNAL_LOOP_BACK)
2092 rc = lpfc_sli4_bsg_set_internal_loopback(phba);
2093 else if (link_flags == EXTERNAL_LOOP_BACK)
2094 rc = lpfc_hba_init_link_fc_topology(phba,
2095 FLAGS_TOPOLOGY_MODE_PT_PT,
2096 MBX_NOWAIT);
2097 else {
2098 rc = -EINVAL;
2099 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
2100 "3141 Loopback mode:x%x not supported\n",
2101 link_flags);
2102 goto loopback_mode_exit;
2103 }
2104
2105 if (!rc) {
2106 /* wait for the link attention interrupt */
2107 msleep(100);
2108 i = 0;
2109 while (phba->link_state < LPFC_LINK_UP) {
2110 if (i++ > timeout) {
2111 rc = -ETIMEDOUT;
2112 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
2113 "3137 Timeout waiting for link up "
2114 "in loopback mode, timeout:%d ms\n",
2115 timeout * 10);
2116 break;
2117 }
2118 msleep(10);
2119 }
2120 }
2121
2122 /* port resource registration setup for loopback diagnostic */
2123 if (!rc) {
2124 /* set up a none zero myDID for loopback test */
2125 phba->pport->fc_myDID = 1;
2126 rc = lpfc_sli4_diag_fcport_reg_setup(phba);
2127 } else
2128 goto loopback_mode_exit;
2129
2130 if (!rc) {
2131 /* wait for the port ready */
2132 msleep(100);
2133 i = 0;
2134 while (phba->link_state != LPFC_HBA_READY) {
2135 if (i++ > timeout) {
2136 rc = -ETIMEDOUT;
2137 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
2138 "3133 Timeout waiting for port "
2139 "loopback mode ready, timeout:%d ms\n",
2140 timeout * 10);
2141 break;
2142 }
2143 msleep(10);
2144 }
2145 }
2146
2147 loopback_mode_exit:
2148 /* clear loopback diagnostic mode */
2149 if (rc) {
2150 spin_lock_irq(&phba->hbalock);
2151 phba->link_flag &= ~LS_LOOPBACK_MODE;
2152 spin_unlock_irq(&phba->hbalock);
2153 }
2154 lpfc_bsg_diag_mode_exit(phba);
2155
2156 job_error:
2157 /* make error code available to userspace */
2158 job->reply->result = rc;
2159 /* complete the job back to userspace if no error */
2160 if (rc == 0)
2161 job->job_done(job);
2162 return rc;
2163 }
2164
2165 /**
2166 * lpfc_bsg_diag_loopback_mode - bsg vendor command for diag loopback mode
2167 * @job: LPFC_BSG_VENDOR_DIAG_MODE
2168 *
2169 * This function is responsible for responding to check and dispatch bsg diag
2170 * command from the user to proper driver action routines.
2171 */
2172 static int
2173 lpfc_bsg_diag_loopback_mode(struct fc_bsg_job *job)
2174 {
2175 struct Scsi_Host *shost;
2176 struct lpfc_vport *vport;
2177 struct lpfc_hba *phba;
2178 int rc;
2179
2180 shost = job->shost;
2181 if (!shost)
2182 return -ENODEV;
2183 vport = (struct lpfc_vport *)job->shost->hostdata;
2184 if (!vport)
2185 return -ENODEV;
2186 phba = vport->phba;
2187 if (!phba)
2188 return -ENODEV;
2189
2190 if (phba->sli_rev < LPFC_SLI_REV4)
2191 rc = lpfc_sli3_bsg_diag_loopback_mode(phba, job);
2192 else if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
2193 LPFC_SLI_INTF_IF_TYPE_2)
2194 rc = lpfc_sli4_bsg_diag_loopback_mode(phba, job);
2195 else
2196 rc = -ENODEV;
2197
2198 return rc;
2199 }
2200
2201 /**
2202 * lpfc_sli4_bsg_diag_mode_end - sli4 bsg vendor command for ending diag mode
2203 * @job: LPFC_BSG_VENDOR_DIAG_MODE_END
2204 *
2205 * This function is responsible for responding to check and dispatch bsg diag
2206 * command from the user to proper driver action routines.
2207 */
2208 static int
2209 lpfc_sli4_bsg_diag_mode_end(struct fc_bsg_job *job)
2210 {
2211 struct Scsi_Host *shost;
2212 struct lpfc_vport *vport;
2213 struct lpfc_hba *phba;
2214 struct diag_mode_set *loopback_mode_end_cmd;
2215 uint32_t timeout;
2216 int rc, i;
2217
2218 shost = job->shost;
2219 if (!shost)
2220 return -ENODEV;
2221 vport = (struct lpfc_vport *)job->shost->hostdata;
2222 if (!vport)
2223 return -ENODEV;
2224 phba = vport->phba;
2225 if (!phba)
2226 return -ENODEV;
2227
2228 if (phba->sli_rev < LPFC_SLI_REV4)
2229 return -ENODEV;
2230 if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
2231 LPFC_SLI_INTF_IF_TYPE_2)
2232 return -ENODEV;
2233
2234 /* clear loopback diagnostic mode */
2235 spin_lock_irq(&phba->hbalock);
2236 phba->link_flag &= ~LS_LOOPBACK_MODE;
2237 spin_unlock_irq(&phba->hbalock);
2238 loopback_mode_end_cmd = (struct diag_mode_set *)
2239 job->request->rqst_data.h_vendor.vendor_cmd;
2240 timeout = loopback_mode_end_cmd->timeout * 100;
2241
2242 rc = lpfc_sli4_bsg_set_link_diag_state(phba, 0);
2243 if (rc) {
2244 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2245 "3139 Failed to bring link to diagnostic "
2246 "state, rc:x%x\n", rc);
2247 goto loopback_mode_end_exit;
2248 }
2249
2250 /* wait for link down before proceeding */
2251 i = 0;
2252 while (phba->link_state != LPFC_LINK_DOWN) {
2253 if (i++ > timeout) {
2254 rc = -ETIMEDOUT;
2255 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
2256 "3140 Timeout waiting for link to "
2257 "diagnostic mode_end, timeout:%d ms\n",
2258 timeout * 10);
2259 /* there is nothing much we can do here */
2260 break;
2261 }
2262 msleep(10);
2263 }
2264
2265 /* reset port resource registrations */
2266 rc = lpfc_selective_reset(phba);
2267 phba->pport->fc_myDID = 0;
2268
2269 loopback_mode_end_exit:
2270 /* make return code available to userspace */
2271 job->reply->result = rc;
2272 /* complete the job back to userspace if no error */
2273 if (rc == 0)
2274 job->job_done(job);
2275 return rc;
2276 }
2277
2278 /**
2279 * lpfc_sli4_bsg_link_diag_test - sli4 bsg vendor command for diag link test
2280 * @job: LPFC_BSG_VENDOR_DIAG_LINK_TEST
2281 *
2282 * This function is to perform SLI4 diag link test request from the user
2283 * applicaiton.
2284 */
2285 static int
2286 lpfc_sli4_bsg_link_diag_test(struct fc_bsg_job *job)
2287 {
2288 struct Scsi_Host *shost;
2289 struct lpfc_vport *vport;
2290 struct lpfc_hba *phba;
2291 LPFC_MBOXQ_t *pmboxq;
2292 struct sli4_link_diag *link_diag_test_cmd;
2293 uint32_t req_len, alloc_len;
2294 uint32_t timeout;
2295 struct lpfc_mbx_run_link_diag_test *run_link_diag_test;
2296 union lpfc_sli4_cfg_shdr *shdr;
2297 uint32_t shdr_status, shdr_add_status;
2298 struct diag_status *diag_status_reply;
2299 int mbxstatus, rc = 0;
2300
2301 shost = job->shost;
2302 if (!shost) {
2303 rc = -ENODEV;
2304 goto job_error;
2305 }
2306 vport = (struct lpfc_vport *)job->shost->hostdata;
2307 if (!vport) {
2308 rc = -ENODEV;
2309 goto job_error;
2310 }
2311 phba = vport->phba;
2312 if (!phba) {
2313 rc = -ENODEV;
2314 goto job_error;
2315 }
2316
2317 if (phba->sli_rev < LPFC_SLI_REV4) {
2318 rc = -ENODEV;
2319 goto job_error;
2320 }
2321 if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
2322 LPFC_SLI_INTF_IF_TYPE_2) {
2323 rc = -ENODEV;
2324 goto job_error;
2325 }
2326
2327 if (job->request_len < sizeof(struct fc_bsg_request) +
2328 sizeof(struct sli4_link_diag)) {
2329 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2330 "3013 Received LINK DIAG TEST request "
2331 " size:%d below the minimum size:%d\n",
2332 job->request_len,
2333 (int)(sizeof(struct fc_bsg_request) +
2334 sizeof(struct sli4_link_diag)));
2335 rc = -EINVAL;
2336 goto job_error;
2337 }
2338
2339 rc = lpfc_bsg_diag_mode_enter(phba);
2340 if (rc)
2341 goto job_error;
2342
2343 link_diag_test_cmd = (struct sli4_link_diag *)
2344 job->request->rqst_data.h_vendor.vendor_cmd;
2345 timeout = link_diag_test_cmd->timeout * 100;
2346
2347 rc = lpfc_sli4_bsg_set_link_diag_state(phba, 1);
2348
2349 if (rc)
2350 goto job_error;
2351
2352 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2353 if (!pmboxq) {
2354 rc = -ENOMEM;
2355 goto link_diag_test_exit;
2356 }
2357
2358 req_len = (sizeof(struct lpfc_mbx_set_link_diag_state) -
2359 sizeof(struct lpfc_sli4_cfg_mhdr));
2360 alloc_len = lpfc_sli4_config(phba, pmboxq, LPFC_MBOX_SUBSYSTEM_FCOE,
2361 LPFC_MBOX_OPCODE_FCOE_LINK_DIAG_STATE,
2362 req_len, LPFC_SLI4_MBX_EMBED);
2363 if (alloc_len != req_len) {
2364 rc = -ENOMEM;
2365 goto link_diag_test_exit;
2366 }
2367 run_link_diag_test = &pmboxq->u.mqe.un.link_diag_test;
2368 bf_set(lpfc_mbx_run_diag_test_link_num, &run_link_diag_test->u.req,
2369 phba->sli4_hba.lnk_info.lnk_no);
2370 bf_set(lpfc_mbx_run_diag_test_link_type, &run_link_diag_test->u.req,
2371 phba->sli4_hba.lnk_info.lnk_tp);
2372 bf_set(lpfc_mbx_run_diag_test_test_id, &run_link_diag_test->u.req,
2373 link_diag_test_cmd->test_id);
2374 bf_set(lpfc_mbx_run_diag_test_loops, &run_link_diag_test->u.req,
2375 link_diag_test_cmd->loops);
2376 bf_set(lpfc_mbx_run_diag_test_test_ver, &run_link_diag_test->u.req,
2377 link_diag_test_cmd->test_version);
2378 bf_set(lpfc_mbx_run_diag_test_err_act, &run_link_diag_test->u.req,
2379 link_diag_test_cmd->error_action);
2380
2381 mbxstatus = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
2382
2383 shdr = (union lpfc_sli4_cfg_shdr *)
2384 &pmboxq->u.mqe.un.sli4_config.header.cfg_shdr;
2385 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
2386 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
2387 if (shdr_status || shdr_add_status || mbxstatus) {
2388 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
2389 "3010 Run link diag test mailbox failed with "
2390 "mbx_status x%x status x%x, add_status x%x\n",
2391 mbxstatus, shdr_status, shdr_add_status);
2392 }
2393
2394 diag_status_reply = (struct diag_status *)
2395 job->reply->reply_data.vendor_reply.vendor_rsp;
2396
2397 if (job->reply_len <
2398 sizeof(struct fc_bsg_request) + sizeof(struct diag_status)) {
2399 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2400 "3012 Received Run link diag test reply "
2401 "below minimum size (%d): reply_len:%d\n",
2402 (int)(sizeof(struct fc_bsg_request) +
2403 sizeof(struct diag_status)),
2404 job->reply_len);
2405 rc = -EINVAL;
2406 goto job_error;
2407 }
2408
2409 diag_status_reply->mbox_status = mbxstatus;
2410 diag_status_reply->shdr_status = shdr_status;
2411 diag_status_reply->shdr_add_status = shdr_add_status;
2412
2413 link_diag_test_exit:
2414 rc = lpfc_sli4_bsg_set_link_diag_state(phba, 0);
2415
2416 if (pmboxq)
2417 mempool_free(pmboxq, phba->mbox_mem_pool);
2418
2419 lpfc_bsg_diag_mode_exit(phba);
2420
2421 job_error:
2422 /* make error code available to userspace */
2423 job->reply->result = rc;
2424 /* complete the job back to userspace if no error */
2425 if (rc == 0)
2426 job->job_done(job);
2427 return rc;
2428 }
2429
2430 /**
2431 * lpfcdiag_loop_self_reg - obtains a remote port login id
2432 * @phba: Pointer to HBA context object
2433 * @rpi: Pointer to a remote port login id
2434 *
2435 * This function obtains a remote port login id so the diag loopback test
2436 * can send and receive its own unsolicited CT command.
2437 **/
2438 static int lpfcdiag_loop_self_reg(struct lpfc_hba *phba, uint16_t *rpi)
2439 {
2440 LPFC_MBOXQ_t *mbox;
2441 struct lpfc_dmabuf *dmabuff;
2442 int status;
2443
2444 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2445 if (!mbox)
2446 return -ENOMEM;
2447
2448 if (phba->sli_rev < LPFC_SLI_REV4)
2449 status = lpfc_reg_rpi(phba, 0, phba->pport->fc_myDID,
2450 (uint8_t *)&phba->pport->fc_sparam,
2451 mbox, *rpi);
2452 else {
2453 *rpi = lpfc_sli4_alloc_rpi(phba);
2454 status = lpfc_reg_rpi(phba, phba->pport->vpi,
2455 phba->pport->fc_myDID,
2456 (uint8_t *)&phba->pport->fc_sparam,
2457 mbox, *rpi);
2458 }
2459
2460 if (status) {
2461 mempool_free(mbox, phba->mbox_mem_pool);
2462 if (phba->sli_rev == LPFC_SLI_REV4)
2463 lpfc_sli4_free_rpi(phba, *rpi);
2464 return -ENOMEM;
2465 }
2466
2467 dmabuff = (struct lpfc_dmabuf *) mbox->context1;
2468 mbox->context1 = NULL;
2469 mbox->context2 = NULL;
2470 status = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2471
2472 if ((status != MBX_SUCCESS) || (mbox->u.mb.mbxStatus)) {
2473 lpfc_mbuf_free(phba, dmabuff->virt, dmabuff->phys);
2474 kfree(dmabuff);
2475 if (status != MBX_TIMEOUT)
2476 mempool_free(mbox, phba->mbox_mem_pool);
2477 if (phba->sli_rev == LPFC_SLI_REV4)
2478 lpfc_sli4_free_rpi(phba, *rpi);
2479 return -ENODEV;
2480 }
2481
2482 if (phba->sli_rev < LPFC_SLI_REV4)
2483 *rpi = mbox->u.mb.un.varWords[0];
2484
2485 lpfc_mbuf_free(phba, dmabuff->virt, dmabuff->phys);
2486 kfree(dmabuff);
2487 mempool_free(mbox, phba->mbox_mem_pool);
2488 return 0;
2489 }
2490
2491 /**
2492 * lpfcdiag_loop_self_unreg - unregs from the rpi
2493 * @phba: Pointer to HBA context object
2494 * @rpi: Remote port login id
2495 *
2496 * This function unregisters the rpi obtained in lpfcdiag_loop_self_reg
2497 **/
2498 static int lpfcdiag_loop_self_unreg(struct lpfc_hba *phba, uint16_t rpi)
2499 {
2500 LPFC_MBOXQ_t *mbox;
2501 int status;
2502
2503 /* Allocate mboxq structure */
2504 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2505 if (mbox == NULL)
2506 return -ENOMEM;
2507
2508 if (phba->sli_rev < LPFC_SLI_REV4)
2509 lpfc_unreg_login(phba, 0, rpi, mbox);
2510 else
2511 lpfc_unreg_login(phba, phba->pport->vpi,
2512 phba->sli4_hba.rpi_ids[rpi], mbox);
2513
2514 status = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2515
2516 if ((status != MBX_SUCCESS) || (mbox->u.mb.mbxStatus)) {
2517 if (status != MBX_TIMEOUT)
2518 mempool_free(mbox, phba->mbox_mem_pool);
2519 return -EIO;
2520 }
2521 mempool_free(mbox, phba->mbox_mem_pool);
2522 if (phba->sli_rev == LPFC_SLI_REV4)
2523 lpfc_sli4_free_rpi(phba, rpi);
2524 return 0;
2525 }
2526
2527 /**
2528 * lpfcdiag_loop_get_xri - obtains the transmit and receive ids
2529 * @phba: Pointer to HBA context object
2530 * @rpi: Remote port login id
2531 * @txxri: Pointer to transmit exchange id
2532 * @rxxri: Pointer to response exchabge id
2533 *
2534 * This function obtains the transmit and receive ids required to send
2535 * an unsolicited ct command with a payload. A special lpfc FsType and CmdRsp
2536 * flags are used to the unsolicted response handler is able to process
2537 * the ct command sent on the same port.
2538 **/
2539 static int lpfcdiag_loop_get_xri(struct lpfc_hba *phba, uint16_t rpi,
2540 uint16_t *txxri, uint16_t * rxxri)
2541 {
2542 struct lpfc_bsg_event *evt;
2543 struct lpfc_iocbq *cmdiocbq, *rspiocbq;
2544 IOCB_t *cmd, *rsp;
2545 struct lpfc_dmabuf *dmabuf;
2546 struct ulp_bde64 *bpl = NULL;
2547 struct lpfc_sli_ct_request *ctreq = NULL;
2548 int ret_val = 0;
2549 int time_left;
2550 int iocb_stat = IOCB_SUCCESS;
2551 unsigned long flags;
2552
2553 *txxri = 0;
2554 *rxxri = 0;
2555 evt = lpfc_bsg_event_new(FC_REG_CT_EVENT, current->pid,
2556 SLI_CT_ELX_LOOPBACK);
2557 if (!evt)
2558 return -ENOMEM;
2559
2560 spin_lock_irqsave(&phba->ct_ev_lock, flags);
2561 list_add(&evt->node, &phba->ct_ev_waiters);
2562 lpfc_bsg_event_ref(evt);
2563 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2564
2565 cmdiocbq = lpfc_sli_get_iocbq(phba);
2566 rspiocbq = lpfc_sli_get_iocbq(phba);
2567
2568 dmabuf = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2569 if (dmabuf) {
2570 dmabuf->virt = lpfc_mbuf_alloc(phba, 0, &dmabuf->phys);
2571 if (dmabuf->virt) {
2572 INIT_LIST_HEAD(&dmabuf->list);
2573 bpl = (struct ulp_bde64 *) dmabuf->virt;
2574 memset(bpl, 0, sizeof(*bpl));
2575 ctreq = (struct lpfc_sli_ct_request *)(bpl + 1);
2576 bpl->addrHigh =
2577 le32_to_cpu(putPaddrHigh(dmabuf->phys +
2578 sizeof(*bpl)));
2579 bpl->addrLow =
2580 le32_to_cpu(putPaddrLow(dmabuf->phys +
2581 sizeof(*bpl)));
2582 bpl->tus.f.bdeFlags = 0;
2583 bpl->tus.f.bdeSize = ELX_LOOPBACK_HEADER_SZ;
2584 bpl->tus.w = le32_to_cpu(bpl->tus.w);
2585 }
2586 }
2587
2588 if (cmdiocbq == NULL || rspiocbq == NULL ||
2589 dmabuf == NULL || bpl == NULL || ctreq == NULL ||
2590 dmabuf->virt == NULL) {
2591 ret_val = -ENOMEM;
2592 goto err_get_xri_exit;
2593 }
2594
2595 cmd = &cmdiocbq->iocb;
2596 rsp = &rspiocbq->iocb;
2597
2598 memset(ctreq, 0, ELX_LOOPBACK_HEADER_SZ);
2599
2600 ctreq->RevisionId.bits.Revision = SLI_CT_REVISION;
2601 ctreq->RevisionId.bits.InId = 0;
2602 ctreq->FsType = SLI_CT_ELX_LOOPBACK;
2603 ctreq->FsSubType = 0;
2604 ctreq->CommandResponse.bits.CmdRsp = ELX_LOOPBACK_XRI_SETUP;
2605 ctreq->CommandResponse.bits.Size = 0;
2606
2607
2608 cmd->un.xseq64.bdl.addrHigh = putPaddrHigh(dmabuf->phys);
2609 cmd->un.xseq64.bdl.addrLow = putPaddrLow(dmabuf->phys);
2610 cmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
2611 cmd->un.xseq64.bdl.bdeSize = sizeof(*bpl);
2612
2613 cmd->un.xseq64.w5.hcsw.Fctl = LA;
2614 cmd->un.xseq64.w5.hcsw.Dfctl = 0;
2615 cmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL;
2616 cmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT;
2617
2618 cmd->ulpCommand = CMD_XMIT_SEQUENCE64_CR;
2619 cmd->ulpBdeCount = 1;
2620 cmd->ulpLe = 1;
2621 cmd->ulpClass = CLASS3;
2622 cmd->ulpContext = rpi;
2623
2624 cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
2625 cmdiocbq->vport = phba->pport;
2626 cmdiocbq->iocb_cmpl = NULL;
2627
2628 iocb_stat = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq,
2629 rspiocbq,
2630 (phba->fc_ratov * 2)
2631 + LPFC_DRVR_TIMEOUT);
2632 if (iocb_stat) {
2633 ret_val = -EIO;
2634 goto err_get_xri_exit;
2635 }
2636 *txxri = rsp->ulpContext;
2637
2638 evt->waiting = 1;
2639 evt->wait_time_stamp = jiffies;
2640 time_left = wait_event_interruptible_timeout(
2641 evt->wq, !list_empty(&evt->events_to_see),
2642 msecs_to_jiffies(1000 *
2643 ((phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT)));
2644 if (list_empty(&evt->events_to_see))
2645 ret_val = (time_left) ? -EINTR : -ETIMEDOUT;
2646 else {
2647 spin_lock_irqsave(&phba->ct_ev_lock, flags);
2648 list_move(evt->events_to_see.prev, &evt->events_to_get);
2649 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2650 *rxxri = (list_entry(evt->events_to_get.prev,
2651 typeof(struct event_data),
2652 node))->immed_dat;
2653 }
2654 evt->waiting = 0;
2655
2656 err_get_xri_exit:
2657 spin_lock_irqsave(&phba->ct_ev_lock, flags);
2658 lpfc_bsg_event_unref(evt); /* release ref */
2659 lpfc_bsg_event_unref(evt); /* delete */
2660 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2661
2662 if (dmabuf) {
2663 if (dmabuf->virt)
2664 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
2665 kfree(dmabuf);
2666 }
2667
2668 if (cmdiocbq && (iocb_stat != IOCB_TIMEDOUT))
2669 lpfc_sli_release_iocbq(phba, cmdiocbq);
2670 if (rspiocbq)
2671 lpfc_sli_release_iocbq(phba, rspiocbq);
2672 return ret_val;
2673 }
2674
2675 /**
2676 * lpfc_bsg_dma_page_alloc - allocate a bsg mbox page sized dma buffers
2677 * @phba: Pointer to HBA context object
2678 *
2679 * This function allocates BSG_MBOX_SIZE (4KB) page size dma buffer and.
2680 * returns the pointer to the buffer.
2681 **/
2682 static struct lpfc_dmabuf *
2683 lpfc_bsg_dma_page_alloc(struct lpfc_hba *phba)
2684 {
2685 struct lpfc_dmabuf *dmabuf;
2686 struct pci_dev *pcidev = phba->pcidev;
2687
2688 /* allocate dma buffer struct */
2689 dmabuf = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2690 if (!dmabuf)
2691 return NULL;
2692
2693 INIT_LIST_HEAD(&dmabuf->list);
2694
2695 /* now, allocate dma buffer */
2696 dmabuf->virt = dma_alloc_coherent(&pcidev->dev, BSG_MBOX_SIZE,
2697 &(dmabuf->phys), GFP_KERNEL);
2698
2699 if (!dmabuf->virt) {
2700 kfree(dmabuf);
2701 return NULL;
2702 }
2703 memset((uint8_t *)dmabuf->virt, 0, BSG_MBOX_SIZE);
2704
2705 return dmabuf;
2706 }
2707
2708 /**
2709 * lpfc_bsg_dma_page_free - free a bsg mbox page sized dma buffer
2710 * @phba: Pointer to HBA context object.
2711 * @dmabuf: Pointer to the bsg mbox page sized dma buffer descriptor.
2712 *
2713 * This routine just simply frees a dma buffer and its associated buffer
2714 * descriptor referred by @dmabuf.
2715 **/
2716 static void
2717 lpfc_bsg_dma_page_free(struct lpfc_hba *phba, struct lpfc_dmabuf *dmabuf)
2718 {
2719 struct pci_dev *pcidev = phba->pcidev;
2720
2721 if (!dmabuf)
2722 return;
2723
2724 if (dmabuf->virt)
2725 dma_free_coherent(&pcidev->dev, BSG_MBOX_SIZE,
2726 dmabuf->virt, dmabuf->phys);
2727 kfree(dmabuf);
2728 return;
2729 }
2730
2731 /**
2732 * lpfc_bsg_dma_page_list_free - free a list of bsg mbox page sized dma buffers
2733 * @phba: Pointer to HBA context object.
2734 * @dmabuf_list: Pointer to a list of bsg mbox page sized dma buffer descs.
2735 *
2736 * This routine just simply frees all dma buffers and their associated buffer
2737 * descriptors referred by @dmabuf_list.
2738 **/
2739 static void
2740 lpfc_bsg_dma_page_list_free(struct lpfc_hba *phba,
2741 struct list_head *dmabuf_list)
2742 {
2743 struct lpfc_dmabuf *dmabuf, *next_dmabuf;
2744
2745 if (list_empty(dmabuf_list))
2746 return;
2747
2748 list_for_each_entry_safe(dmabuf, next_dmabuf, dmabuf_list, list) {
2749 list_del_init(&dmabuf->list);
2750 lpfc_bsg_dma_page_free(phba, dmabuf);
2751 }
2752 return;
2753 }
2754
2755 /**
2756 * diag_cmd_data_alloc - fills in a bde struct with dma buffers
2757 * @phba: Pointer to HBA context object
2758 * @bpl: Pointer to 64 bit bde structure
2759 * @size: Number of bytes to process
2760 * @nocopydata: Flag to copy user data into the allocated buffer
2761 *
2762 * This function allocates page size buffers and populates an lpfc_dmabufext.
2763 * If allowed the user data pointed to with indataptr is copied into the kernel
2764 * memory. The chained list of page size buffers is returned.
2765 **/
2766 static struct lpfc_dmabufext *
2767 diag_cmd_data_alloc(struct lpfc_hba *phba,
2768 struct ulp_bde64 *bpl, uint32_t size,
2769 int nocopydata)
2770 {
2771 struct lpfc_dmabufext *mlist = NULL;
2772 struct lpfc_dmabufext *dmp;
2773 int cnt, offset = 0, i = 0;
2774 struct pci_dev *pcidev;
2775
2776 pcidev = phba->pcidev;
2777
2778 while (size) {
2779 /* We get chunks of 4K */
2780 if (size > BUF_SZ_4K)
2781 cnt = BUF_SZ_4K;
2782 else
2783 cnt = size;
2784
2785 /* allocate struct lpfc_dmabufext buffer header */
2786 dmp = kmalloc(sizeof(struct lpfc_dmabufext), GFP_KERNEL);
2787 if (!dmp)
2788 goto out;
2789
2790 INIT_LIST_HEAD(&dmp->dma.list);
2791
2792 /* Queue it to a linked list */
2793 if (mlist)
2794 list_add_tail(&dmp->dma.list, &mlist->dma.list);
2795 else
2796 mlist = dmp;
2797
2798 /* allocate buffer */
2799 dmp->dma.virt = dma_alloc_coherent(&pcidev->dev,
2800 cnt,
2801 &(dmp->dma.phys),
2802 GFP_KERNEL);
2803
2804 if (!dmp->dma.virt)
2805 goto out;
2806
2807 dmp->size = cnt;
2808
2809 if (nocopydata) {
2810 bpl->tus.f.bdeFlags = 0;
2811 pci_dma_sync_single_for_device(phba->pcidev,
2812 dmp->dma.phys, LPFC_BPL_SIZE, PCI_DMA_TODEVICE);
2813
2814 } else {
2815 memset((uint8_t *)dmp->dma.virt, 0, cnt);
2816 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
2817 }
2818
2819 /* build buffer ptr list for IOCB */
2820 bpl->addrLow = le32_to_cpu(putPaddrLow(dmp->dma.phys));
2821 bpl->addrHigh = le32_to_cpu(putPaddrHigh(dmp->dma.phys));
2822 bpl->tus.f.bdeSize = (ushort) cnt;
2823 bpl->tus.w = le32_to_cpu(bpl->tus.w);
2824 bpl++;
2825
2826 i++;
2827 offset += cnt;
2828 size -= cnt;
2829 }
2830
2831 mlist->flag = i;
2832 return mlist;
2833 out:
2834 diag_cmd_data_free(phba, mlist);
2835 return NULL;
2836 }
2837
2838 /**
2839 * lpfcdiag_loop_post_rxbufs - post the receive buffers for an unsol CT cmd
2840 * @phba: Pointer to HBA context object
2841 * @rxxri: Receive exchange id
2842 * @len: Number of data bytes
2843 *
2844 * This function allocates and posts a data buffer of sufficient size to receive
2845 * an unsolicted CT command.
2846 **/
2847 static int lpfcdiag_loop_post_rxbufs(struct lpfc_hba *phba, uint16_t rxxri,
2848 size_t len)
2849 {
2850 struct lpfc_sli *psli = &phba->sli;
2851 struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
2852 struct lpfc_iocbq *cmdiocbq;
2853 IOCB_t *cmd = NULL;
2854 struct list_head head, *curr, *next;
2855 struct lpfc_dmabuf *rxbmp;
2856 struct lpfc_dmabuf *dmp;
2857 struct lpfc_dmabuf *mp[2] = {NULL, NULL};
2858 struct ulp_bde64 *rxbpl = NULL;
2859 uint32_t num_bde;
2860 struct lpfc_dmabufext *rxbuffer = NULL;
2861 int ret_val = 0;
2862 int iocb_stat;
2863 int i = 0;
2864
2865 cmdiocbq = lpfc_sli_get_iocbq(phba);
2866 rxbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2867 if (rxbmp != NULL) {
2868 rxbmp->virt = lpfc_mbuf_alloc(phba, 0, &rxbmp->phys);
2869 if (rxbmp->virt) {
2870 INIT_LIST_HEAD(&rxbmp->list);
2871 rxbpl = (struct ulp_bde64 *) rxbmp->virt;
2872 rxbuffer = diag_cmd_data_alloc(phba, rxbpl, len, 0);
2873 }
2874 }
2875
2876 if (!cmdiocbq || !rxbmp || !rxbpl || !rxbuffer) {
2877 ret_val = -ENOMEM;
2878 goto err_post_rxbufs_exit;
2879 }
2880
2881 /* Queue buffers for the receive exchange */
2882 num_bde = (uint32_t)rxbuffer->flag;
2883 dmp = &rxbuffer->dma;
2884
2885 cmd = &cmdiocbq->iocb;
2886 i = 0;
2887
2888 INIT_LIST_HEAD(&head);
2889 list_add_tail(&head, &dmp->list);
2890 list_for_each_safe(curr, next, &head) {
2891 mp[i] = list_entry(curr, struct lpfc_dmabuf, list);
2892 list_del(curr);
2893
2894 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
2895 mp[i]->buffer_tag = lpfc_sli_get_buffer_tag(phba);
2896 cmd->un.quexri64cx.buff.bde.addrHigh =
2897 putPaddrHigh(mp[i]->phys);
2898 cmd->un.quexri64cx.buff.bde.addrLow =
2899 putPaddrLow(mp[i]->phys);
2900 cmd->un.quexri64cx.buff.bde.tus.f.bdeSize =
2901 ((struct lpfc_dmabufext *)mp[i])->size;
2902 cmd->un.quexri64cx.buff.buffer_tag = mp[i]->buffer_tag;
2903 cmd->ulpCommand = CMD_QUE_XRI64_CX;
2904 cmd->ulpPU = 0;
2905 cmd->ulpLe = 1;
2906 cmd->ulpBdeCount = 1;
2907 cmd->unsli3.que_xri64cx_ext_words.ebde_count = 0;
2908
2909 } else {
2910 cmd->un.cont64[i].addrHigh = putPaddrHigh(mp[i]->phys);
2911 cmd->un.cont64[i].addrLow = putPaddrLow(mp[i]->phys);
2912 cmd->un.cont64[i].tus.f.bdeSize =
2913 ((struct lpfc_dmabufext *)mp[i])->size;
2914 cmd->ulpBdeCount = ++i;
2915
2916 if ((--num_bde > 0) && (i < 2))
2917 continue;
2918
2919 cmd->ulpCommand = CMD_QUE_XRI_BUF64_CX;
2920 cmd->ulpLe = 1;
2921 }
2922
2923 cmd->ulpClass = CLASS3;
2924 cmd->ulpContext = rxxri;
2925
2926 iocb_stat = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq,
2927 0);
2928 if (iocb_stat == IOCB_ERROR) {
2929 diag_cmd_data_free(phba,
2930 (struct lpfc_dmabufext *)mp[0]);
2931 if (mp[1])
2932 diag_cmd_data_free(phba,
2933 (struct lpfc_dmabufext *)mp[1]);
2934 dmp = list_entry(next, struct lpfc_dmabuf, list);
2935 ret_val = -EIO;
2936 goto err_post_rxbufs_exit;
2937 }
2938
2939 lpfc_sli_ringpostbuf_put(phba, pring, mp[0]);
2940 if (mp[1]) {
2941 lpfc_sli_ringpostbuf_put(phba, pring, mp[1]);
2942 mp[1] = NULL;
2943 }
2944
2945 /* The iocb was freed by lpfc_sli_issue_iocb */
2946 cmdiocbq = lpfc_sli_get_iocbq(phba);
2947 if (!cmdiocbq) {
2948 dmp = list_entry(next, struct lpfc_dmabuf, list);
2949 ret_val = -EIO;
2950 goto err_post_rxbufs_exit;
2951 }
2952
2953 cmd = &cmdiocbq->iocb;
2954 i = 0;
2955 }
2956 list_del(&head);
2957
2958 err_post_rxbufs_exit:
2959
2960 if (rxbmp) {
2961 if (rxbmp->virt)
2962 lpfc_mbuf_free(phba, rxbmp->virt, rxbmp->phys);
2963 kfree(rxbmp);
2964 }
2965
2966 if (cmdiocbq)
2967 lpfc_sli_release_iocbq(phba, cmdiocbq);
2968 return ret_val;
2969 }
2970
2971 /**
2972 * lpfc_bsg_diag_loopback_run - run loopback on a port by issue ct cmd to itself
2973 * @job: LPFC_BSG_VENDOR_DIAG_TEST fc_bsg_job
2974 *
2975 * This function receives a user data buffer to be transmitted and received on
2976 * the same port, the link must be up and in loopback mode prior
2977 * to being called.
2978 * 1. A kernel buffer is allocated to copy the user data into.
2979 * 2. The port registers with "itself".
2980 * 3. The transmit and receive exchange ids are obtained.
2981 * 4. The receive exchange id is posted.
2982 * 5. A new els loopback event is created.
2983 * 6. The command and response iocbs are allocated.
2984 * 7. The cmd iocb FsType is set to elx loopback and the CmdRsp to looppback.
2985 *
2986 * This function is meant to be called n times while the port is in loopback
2987 * so it is the apps responsibility to issue a reset to take the port out
2988 * of loopback mode.
2989 **/
2990 static int
2991 lpfc_bsg_diag_loopback_run(struct fc_bsg_job *job)
2992 {
2993 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
2994 struct lpfc_hba *phba = vport->phba;
2995 struct diag_mode_test *diag_mode;
2996 struct lpfc_bsg_event *evt;
2997 struct event_data *evdat;
2998 struct lpfc_sli *psli = &phba->sli;
2999 uint32_t size;
3000 uint32_t full_size;
3001 size_t segment_len = 0, segment_offset = 0, current_offset = 0;
3002 uint16_t rpi = 0;
3003 struct lpfc_iocbq *cmdiocbq, *rspiocbq = NULL;
3004 IOCB_t *cmd, *rsp = NULL;
3005 struct lpfc_sli_ct_request *ctreq;
3006 struct lpfc_dmabuf *txbmp;
3007 struct ulp_bde64 *txbpl = NULL;
3008 struct lpfc_dmabufext *txbuffer = NULL;
3009 struct list_head head;
3010 struct lpfc_dmabuf *curr;
3011 uint16_t txxri = 0, rxxri;
3012 uint32_t num_bde;
3013 uint8_t *ptr = NULL, *rx_databuf = NULL;
3014 int rc = 0;
3015 int time_left;
3016 int iocb_stat = IOCB_SUCCESS;
3017 unsigned long flags;
3018 void *dataout = NULL;
3019 uint32_t total_mem;
3020
3021 /* in case no data is returned return just the return code */
3022 job->reply->reply_payload_rcv_len = 0;
3023
3024 if (job->request_len <
3025 sizeof(struct fc_bsg_request) + sizeof(struct diag_mode_test)) {
3026 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3027 "2739 Received DIAG TEST request below minimum "
3028 "size\n");
3029 rc = -EINVAL;
3030 goto loopback_test_exit;
3031 }
3032
3033 if (job->request_payload.payload_len !=
3034 job->reply_payload.payload_len) {
3035 rc = -EINVAL;
3036 goto loopback_test_exit;
3037 }
3038 diag_mode = (struct diag_mode_test *)
3039 job->request->rqst_data.h_vendor.vendor_cmd;
3040
3041 if ((phba->link_state == LPFC_HBA_ERROR) ||
3042 (psli->sli_flag & LPFC_BLOCK_MGMT_IO) ||
3043 (!(psli->sli_flag & LPFC_SLI_ACTIVE))) {
3044 rc = -EACCES;
3045 goto loopback_test_exit;
3046 }
3047
3048 if (!lpfc_is_link_up(phba) || !(phba->link_flag & LS_LOOPBACK_MODE)) {
3049 rc = -EACCES;
3050 goto loopback_test_exit;
3051 }
3052
3053 size = job->request_payload.payload_len;
3054 full_size = size + ELX_LOOPBACK_HEADER_SZ; /* plus the header */
3055
3056 if ((size == 0) || (size > 80 * BUF_SZ_4K)) {
3057 rc = -ERANGE;
3058 goto loopback_test_exit;
3059 }
3060
3061 if (full_size >= BUF_SZ_4K) {
3062 /*
3063 * Allocate memory for ioctl data. If buffer is bigger than 64k,
3064 * then we allocate 64k and re-use that buffer over and over to
3065 * xfer the whole block. This is because Linux kernel has a
3066 * problem allocating more than 120k of kernel space memory. Saw
3067 * problem with GET_FCPTARGETMAPPING...
3068 */
3069 if (size <= (64 * 1024))
3070 total_mem = full_size;
3071 else
3072 total_mem = 64 * 1024;
3073 } else
3074 /* Allocate memory for ioctl data */
3075 total_mem = BUF_SZ_4K;
3076
3077 dataout = kmalloc(total_mem, GFP_KERNEL);
3078 if (dataout == NULL) {
3079 rc = -ENOMEM;
3080 goto loopback_test_exit;
3081 }
3082
3083 ptr = dataout;
3084 ptr += ELX_LOOPBACK_HEADER_SZ;
3085 sg_copy_to_buffer(job->request_payload.sg_list,
3086 job->request_payload.sg_cnt,
3087 ptr, size);
3088 rc = lpfcdiag_loop_self_reg(phba, &rpi);
3089 if (rc)
3090 goto loopback_test_exit;
3091
3092 if (phba->sli_rev < LPFC_SLI_REV4) {
3093 rc = lpfcdiag_loop_get_xri(phba, rpi, &txxri, &rxxri);
3094 if (rc) {
3095 lpfcdiag_loop_self_unreg(phba, rpi);
3096 goto loopback_test_exit;
3097 }
3098
3099 rc = lpfcdiag_loop_post_rxbufs(phba, rxxri, full_size);
3100 if (rc) {
3101 lpfcdiag_loop_self_unreg(phba, rpi);
3102 goto loopback_test_exit;
3103 }
3104 }
3105 evt = lpfc_bsg_event_new(FC_REG_CT_EVENT, current->pid,
3106 SLI_CT_ELX_LOOPBACK);
3107 if (!evt) {
3108 lpfcdiag_loop_self_unreg(phba, rpi);
3109 rc = -ENOMEM;
3110 goto loopback_test_exit;
3111 }
3112
3113 spin_lock_irqsave(&phba->ct_ev_lock, flags);
3114 list_add(&evt->node, &phba->ct_ev_waiters);
3115 lpfc_bsg_event_ref(evt);
3116 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3117
3118 cmdiocbq = lpfc_sli_get_iocbq(phba);
3119 if (phba->sli_rev < LPFC_SLI_REV4)
3120 rspiocbq = lpfc_sli_get_iocbq(phba);
3121 txbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
3122
3123 if (txbmp) {
3124 txbmp->virt = lpfc_mbuf_alloc(phba, 0, &txbmp->phys);
3125 if (txbmp->virt) {
3126 INIT_LIST_HEAD(&txbmp->list);
3127 txbpl = (struct ulp_bde64 *) txbmp->virt;
3128 txbuffer = diag_cmd_data_alloc(phba,
3129 txbpl, full_size, 0);
3130 }
3131 }
3132
3133 if (!cmdiocbq || !txbmp || !txbpl || !txbuffer || !txbmp->virt) {
3134 rc = -ENOMEM;
3135 goto err_loopback_test_exit;
3136 }
3137 if ((phba->sli_rev < LPFC_SLI_REV4) && !rspiocbq) {
3138 rc = -ENOMEM;
3139 goto err_loopback_test_exit;
3140 }
3141
3142 cmd = &cmdiocbq->iocb;
3143 if (phba->sli_rev < LPFC_SLI_REV4)
3144 rsp = &rspiocbq->iocb;
3145
3146 INIT_LIST_HEAD(&head);
3147 list_add_tail(&head, &txbuffer->dma.list);
3148 list_for_each_entry(curr, &head, list) {
3149 segment_len = ((struct lpfc_dmabufext *)curr)->size;
3150 if (current_offset == 0) {
3151 ctreq = curr->virt;
3152 memset(ctreq, 0, ELX_LOOPBACK_HEADER_SZ);
3153 ctreq->RevisionId.bits.Revision = SLI_CT_REVISION;
3154 ctreq->RevisionId.bits.InId = 0;
3155 ctreq->FsType = SLI_CT_ELX_LOOPBACK;
3156 ctreq->FsSubType = 0;
3157 ctreq->CommandResponse.bits.CmdRsp = ELX_LOOPBACK_DATA;
3158 ctreq->CommandResponse.bits.Size = size;
3159 segment_offset = ELX_LOOPBACK_HEADER_SZ;
3160 } else
3161 segment_offset = 0;
3162
3163 BUG_ON(segment_offset >= segment_len);
3164 memcpy(curr->virt + segment_offset,
3165 ptr + current_offset,
3166 segment_len - segment_offset);
3167
3168 current_offset += segment_len - segment_offset;
3169 BUG_ON(current_offset > size);
3170 }
3171 list_del(&head);
3172
3173 /* Build the XMIT_SEQUENCE iocb */
3174 num_bde = (uint32_t)txbuffer->flag;
3175
3176 cmd->un.xseq64.bdl.addrHigh = putPaddrHigh(txbmp->phys);
3177 cmd->un.xseq64.bdl.addrLow = putPaddrLow(txbmp->phys);
3178 cmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
3179 cmd->un.xseq64.bdl.bdeSize = (num_bde * sizeof(struct ulp_bde64));
3180
3181 cmd->un.xseq64.w5.hcsw.Fctl = (LS | LA);
3182 cmd->un.xseq64.w5.hcsw.Dfctl = 0;
3183 cmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL;
3184 cmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT;
3185
3186 cmd->ulpCommand = CMD_XMIT_SEQUENCE64_CX;
3187 cmd->ulpBdeCount = 1;
3188 cmd->ulpLe = 1;
3189 cmd->ulpClass = CLASS3;
3190
3191 if (phba->sli_rev < LPFC_SLI_REV4) {
3192 cmd->ulpContext = txxri;
3193 } else {
3194 cmd->un.xseq64.bdl.ulpIoTag32 = 0;
3195 cmd->un.ulpWord[3] = phba->sli4_hba.rpi_ids[rpi];
3196 cmdiocbq->context3 = txbmp;
3197 cmdiocbq->sli4_xritag = NO_XRI;
3198 cmd->unsli3.rcvsli3.ox_id = 0xffff;
3199 }
3200 cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
3201 cmdiocbq->vport = phba->pport;
3202 cmdiocbq->iocb_cmpl = NULL;
3203 iocb_stat = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq,
3204 rspiocbq, (phba->fc_ratov * 2) +
3205 LPFC_DRVR_TIMEOUT);
3206
3207 if ((iocb_stat != IOCB_SUCCESS) || ((phba->sli_rev < LPFC_SLI_REV4) &&
3208 (rsp->ulpStatus != IOCB_SUCCESS))) {
3209 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3210 "3126 Failed loopback test issue iocb: "
3211 "iocb_stat:x%x\n", iocb_stat);
3212 rc = -EIO;
3213 goto err_loopback_test_exit;
3214 }
3215
3216 evt->waiting = 1;
3217 time_left = wait_event_interruptible_timeout(
3218 evt->wq, !list_empty(&evt->events_to_see),
3219 msecs_to_jiffies(1000 *
3220 ((phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT)));
3221 evt->waiting = 0;
3222 if (list_empty(&evt->events_to_see)) {
3223 rc = (time_left) ? -EINTR : -ETIMEDOUT;
3224 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3225 "3125 Not receiving unsolicited event, "
3226 "rc:x%x\n", rc);
3227 } else {
3228 spin_lock_irqsave(&phba->ct_ev_lock, flags);
3229 list_move(evt->events_to_see.prev, &evt->events_to_get);
3230 evdat = list_entry(evt->events_to_get.prev,
3231 typeof(*evdat), node);
3232 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3233 rx_databuf = evdat->data;
3234 if (evdat->len != full_size) {
3235 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3236 "1603 Loopback test did not receive expected "
3237 "data length. actual length 0x%x expected "
3238 "length 0x%x\n",
3239 evdat->len, full_size);
3240 rc = -EIO;
3241 } else if (rx_databuf == NULL)
3242 rc = -EIO;
3243 else {
3244 rc = IOCB_SUCCESS;
3245 /* skip over elx loopback header */
3246 rx_databuf += ELX_LOOPBACK_HEADER_SZ;
3247 job->reply->reply_payload_rcv_len =
3248 sg_copy_from_buffer(job->reply_payload.sg_list,
3249 job->reply_payload.sg_cnt,
3250 rx_databuf, size);
3251 job->reply->reply_payload_rcv_len = size;
3252 }
3253 }
3254
3255 err_loopback_test_exit:
3256 lpfcdiag_loop_self_unreg(phba, rpi);
3257
3258 spin_lock_irqsave(&phba->ct_ev_lock, flags);
3259 lpfc_bsg_event_unref(evt); /* release ref */
3260 lpfc_bsg_event_unref(evt); /* delete */
3261 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3262
3263 if ((cmdiocbq != NULL) && (iocb_stat != IOCB_TIMEDOUT))
3264 lpfc_sli_release_iocbq(phba, cmdiocbq);
3265
3266 if (rspiocbq != NULL)
3267 lpfc_sli_release_iocbq(phba, rspiocbq);
3268
3269 if (txbmp != NULL) {
3270 if (txbpl != NULL) {
3271 if (txbuffer != NULL)
3272 diag_cmd_data_free(phba, txbuffer);
3273 lpfc_mbuf_free(phba, txbmp->virt, txbmp->phys);
3274 }
3275 kfree(txbmp);
3276 }
3277
3278 loopback_test_exit:
3279 kfree(dataout);
3280 /* make error code available to userspace */
3281 job->reply->result = rc;
3282 job->dd_data = NULL;
3283 /* complete the job back to userspace if no error */
3284 if (rc == IOCB_SUCCESS)
3285 job->job_done(job);
3286 return rc;
3287 }
3288
3289 /**
3290 * lpfc_bsg_get_dfc_rev - process a GET_DFC_REV bsg vendor command
3291 * @job: GET_DFC_REV fc_bsg_job
3292 **/
3293 static int
3294 lpfc_bsg_get_dfc_rev(struct fc_bsg_job *job)
3295 {
3296 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
3297 struct lpfc_hba *phba = vport->phba;
3298 struct get_mgmt_rev *event_req;
3299 struct get_mgmt_rev_reply *event_reply;
3300 int rc = 0;
3301
3302 if (job->request_len <
3303 sizeof(struct fc_bsg_request) + sizeof(struct get_mgmt_rev)) {
3304 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3305 "2740 Received GET_DFC_REV request below "
3306 "minimum size\n");
3307 rc = -EINVAL;
3308 goto job_error;
3309 }
3310
3311 event_req = (struct get_mgmt_rev *)
3312 job->request->rqst_data.h_vendor.vendor_cmd;
3313
3314 event_reply = (struct get_mgmt_rev_reply *)
3315 job->reply->reply_data.vendor_reply.vendor_rsp;
3316
3317 if (job->reply_len <
3318 sizeof(struct fc_bsg_request) + sizeof(struct get_mgmt_rev_reply)) {
3319 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3320 "2741 Received GET_DFC_REV reply below "
3321 "minimum size\n");
3322 rc = -EINVAL;
3323 goto job_error;
3324 }
3325
3326 event_reply->info.a_Major = MANAGEMENT_MAJOR_REV;
3327 event_reply->info.a_Minor = MANAGEMENT_MINOR_REV;
3328 job_error:
3329 job->reply->result = rc;
3330 if (rc == 0)
3331 job->job_done(job);
3332 return rc;
3333 }
3334
3335 /**
3336 * lpfc_bsg_issue_mbox_cmpl - lpfc_bsg_issue_mbox mbox completion handler
3337 * @phba: Pointer to HBA context object.
3338 * @pmboxq: Pointer to mailbox command.
3339 *
3340 * This is completion handler function for mailbox commands issued from
3341 * lpfc_bsg_issue_mbox function. This function is called by the
3342 * mailbox event handler function with no lock held. This function
3343 * will wake up thread waiting on the wait queue pointed by context1
3344 * of the mailbox.
3345 **/
3346 void
3347 lpfc_bsg_issue_mbox_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
3348 {
3349 struct bsg_job_data *dd_data;
3350 struct fc_bsg_job *job;
3351 uint32_t size;
3352 unsigned long flags;
3353 uint8_t *pmb, *pmb_buf;
3354
3355 dd_data = pmboxq->context1;
3356
3357 /*
3358 * The outgoing buffer is readily referred from the dma buffer,
3359 * just need to get header part from mailboxq structure.
3360 */
3361 pmb = (uint8_t *)&pmboxq->u.mb;
3362 pmb_buf = (uint8_t *)dd_data->context_un.mbox.mb;
3363 memcpy(pmb_buf, pmb, sizeof(MAILBOX_t));
3364
3365 /* Determine if job has been aborted */
3366
3367 spin_lock_irqsave(&phba->ct_ev_lock, flags);
3368 job = dd_data->set_job;
3369 if (job) {
3370 /* Prevent timeout handling from trying to abort job */
3371 job->dd_data = NULL;
3372 }
3373 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3374
3375 /* Copy the mailbox data to the job if it is still active */
3376
3377 if (job) {
3378 size = job->reply_payload.payload_len;
3379 job->reply->reply_payload_rcv_len =
3380 sg_copy_from_buffer(job->reply_payload.sg_list,
3381 job->reply_payload.sg_cnt,
3382 pmb_buf, size);
3383 }
3384
3385 dd_data->set_job = NULL;
3386 mempool_free(dd_data->context_un.mbox.pmboxq, phba->mbox_mem_pool);
3387 lpfc_bsg_dma_page_free(phba, dd_data->context_un.mbox.dmabuffers);
3388 kfree(dd_data);
3389
3390 /* Complete the job if the job is still active */
3391
3392 if (job) {
3393 job->reply->result = 0;
3394 job->job_done(job);
3395 }
3396 return;
3397 }
3398
3399 /**
3400 * lpfc_bsg_check_cmd_access - test for a supported mailbox command
3401 * @phba: Pointer to HBA context object.
3402 * @mb: Pointer to a mailbox object.
3403 * @vport: Pointer to a vport object.
3404 *
3405 * Some commands require the port to be offline, some may not be called from
3406 * the application.
3407 **/
3408 static int lpfc_bsg_check_cmd_access(struct lpfc_hba *phba,
3409 MAILBOX_t *mb, struct lpfc_vport *vport)
3410 {
3411 /* return negative error values for bsg job */
3412 switch (mb->mbxCommand) {
3413 /* Offline only */
3414 case MBX_INIT_LINK:
3415 case MBX_DOWN_LINK:
3416 case MBX_CONFIG_LINK:
3417 case MBX_CONFIG_RING:
3418 case MBX_RESET_RING:
3419 case MBX_UNREG_LOGIN:
3420 case MBX_CLEAR_LA:
3421 case MBX_DUMP_CONTEXT:
3422 case MBX_RUN_DIAGS:
3423 case MBX_RESTART:
3424 case MBX_SET_MASK:
3425 if (!(vport->fc_flag & FC_OFFLINE_MODE)) {
3426 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3427 "2743 Command 0x%x is illegal in on-line "
3428 "state\n",
3429 mb->mbxCommand);
3430 return -EPERM;
3431 }
3432 case MBX_WRITE_NV:
3433 case MBX_WRITE_VPARMS:
3434 case MBX_LOAD_SM:
3435 case MBX_READ_NV:
3436 case MBX_READ_CONFIG:
3437 case MBX_READ_RCONFIG:
3438 case MBX_READ_STATUS:
3439 case MBX_READ_XRI:
3440 case MBX_READ_REV:
3441 case MBX_READ_LNK_STAT:
3442 case MBX_DUMP_MEMORY:
3443 case MBX_DOWN_LOAD:
3444 case MBX_UPDATE_CFG:
3445 case MBX_KILL_BOARD:
3446 case MBX_READ_TOPOLOGY:
3447 case MBX_LOAD_AREA:
3448 case MBX_LOAD_EXP_ROM:
3449 case MBX_BEACON:
3450 case MBX_DEL_LD_ENTRY:
3451 case MBX_SET_DEBUG:
3452 case MBX_WRITE_WWN:
3453 case MBX_SLI4_CONFIG:
3454 case MBX_READ_EVENT_LOG:
3455 case MBX_READ_EVENT_LOG_STATUS:
3456 case MBX_WRITE_EVENT_LOG:
3457 case MBX_PORT_CAPABILITIES:
3458 case MBX_PORT_IOV_CONTROL:
3459 case MBX_RUN_BIU_DIAG64:
3460 break;
3461 case MBX_SET_VARIABLE:
3462 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3463 "1226 mbox: set_variable 0x%x, 0x%x\n",
3464 mb->un.varWords[0],
3465 mb->un.varWords[1]);
3466 if ((mb->un.varWords[0] == SETVAR_MLOMNT)
3467 && (mb->un.varWords[1] == 1)) {
3468 phba->wait_4_mlo_maint_flg = 1;
3469 } else if (mb->un.varWords[0] == SETVAR_MLORST) {
3470 spin_lock_irq(&phba->hbalock);
3471 phba->link_flag &= ~LS_LOOPBACK_MODE;
3472 spin_unlock_irq(&phba->hbalock);
3473 phba->fc_topology = LPFC_TOPOLOGY_PT_PT;
3474 }
3475 break;
3476 case MBX_READ_SPARM64:
3477 case MBX_REG_LOGIN:
3478 case MBX_REG_LOGIN64:
3479 case MBX_CONFIG_PORT:
3480 case MBX_RUN_BIU_DIAG:
3481 default:
3482 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3483 "2742 Unknown Command 0x%x\n",
3484 mb->mbxCommand);
3485 return -EPERM;
3486 }
3487
3488 return 0; /* ok */
3489 }
3490
3491 /**
3492 * lpfc_bsg_mbox_ext_cleanup - clean up context of multi-buffer mbox session
3493 * @phba: Pointer to HBA context object.
3494 *
3495 * This is routine clean up and reset BSG handling of multi-buffer mbox
3496 * command session.
3497 **/
3498 static void
3499 lpfc_bsg_mbox_ext_session_reset(struct lpfc_hba *phba)
3500 {
3501 if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_IDLE)
3502 return;
3503
3504 /* free all memory, including dma buffers */
3505 lpfc_bsg_dma_page_list_free(phba,
3506 &phba->mbox_ext_buf_ctx.ext_dmabuf_list);
3507 lpfc_bsg_dma_page_free(phba, phba->mbox_ext_buf_ctx.mbx_dmabuf);
3508 /* multi-buffer write mailbox command pass-through complete */
3509 memset((char *)&phba->mbox_ext_buf_ctx, 0,
3510 sizeof(struct lpfc_mbox_ext_buf_ctx));
3511 INIT_LIST_HEAD(&phba->mbox_ext_buf_ctx.ext_dmabuf_list);
3512
3513 return;
3514 }
3515
3516 /**
3517 * lpfc_bsg_issue_mbox_ext_handle_job - job handler for multi-buffer mbox cmpl
3518 * @phba: Pointer to HBA context object.
3519 * @pmboxq: Pointer to mailbox command.
3520 *
3521 * This is routine handles BSG job for mailbox commands completions with
3522 * multiple external buffers.
3523 **/
3524 static struct fc_bsg_job *
3525 lpfc_bsg_issue_mbox_ext_handle_job(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
3526 {
3527 struct bsg_job_data *dd_data;
3528 struct fc_bsg_job *job;
3529 uint8_t *pmb, *pmb_buf;
3530 unsigned long flags;
3531 uint32_t size;
3532 int rc = 0;
3533 struct lpfc_dmabuf *dmabuf;
3534 struct lpfc_sli_config_mbox *sli_cfg_mbx;
3535 uint8_t *pmbx;
3536
3537 dd_data = pmboxq->context1;
3538
3539 /* Determine if job has been aborted */
3540 spin_lock_irqsave(&phba->ct_ev_lock, flags);
3541 job = dd_data->set_job;
3542 if (job) {
3543 /* Prevent timeout handling from trying to abort job */
3544 job->dd_data = NULL;
3545 }
3546 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3547
3548 /*
3549 * The outgoing buffer is readily referred from the dma buffer,
3550 * just need to get header part from mailboxq structure.
3551 */
3552
3553 pmb = (uint8_t *)&pmboxq->u.mb;
3554 pmb_buf = (uint8_t *)dd_data->context_un.mbox.mb;
3555 /* Copy the byte swapped response mailbox back to the user */
3556 memcpy(pmb_buf, pmb, sizeof(MAILBOX_t));
3557 /* if there is any non-embedded extended data copy that too */
3558 dmabuf = phba->mbox_ext_buf_ctx.mbx_dmabuf;
3559 sli_cfg_mbx = (struct lpfc_sli_config_mbox *)dmabuf->virt;
3560 if (!bsg_bf_get(lpfc_mbox_hdr_emb,
3561 &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr)) {
3562 pmbx = (uint8_t *)dmabuf->virt;
3563 /* byte swap the extended data following the mailbox command */
3564 lpfc_sli_pcimem_bcopy(&pmbx[sizeof(MAILBOX_t)],
3565 &pmbx[sizeof(MAILBOX_t)],
3566 sli_cfg_mbx->un.sli_config_emb0_subsys.mse[0].buf_len);
3567 }
3568
3569 /* Complete the job if the job is still active */
3570
3571 if (job) {
3572 size = job->reply_payload.payload_len;
3573 job->reply->reply_payload_rcv_len =
3574 sg_copy_from_buffer(job->reply_payload.sg_list,
3575 job->reply_payload.sg_cnt,
3576 pmb_buf, size);
3577
3578 /* result for successful */
3579 job->reply->result = 0;
3580
3581 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3582 "2937 SLI_CONFIG ext-buffer maibox command "
3583 "(x%x/x%x) complete bsg job done, bsize:%d\n",
3584 phba->mbox_ext_buf_ctx.nembType,
3585 phba->mbox_ext_buf_ctx.mboxType, size);
3586 lpfc_idiag_mbxacc_dump_bsg_mbox(phba,
3587 phba->mbox_ext_buf_ctx.nembType,
3588 phba->mbox_ext_buf_ctx.mboxType,
3589 dma_ebuf, sta_pos_addr,
3590 phba->mbox_ext_buf_ctx.mbx_dmabuf, 0);
3591 } else {
3592 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3593 "2938 SLI_CONFIG ext-buffer maibox "
3594 "command (x%x/x%x) failure, rc:x%x\n",
3595 phba->mbox_ext_buf_ctx.nembType,
3596 phba->mbox_ext_buf_ctx.mboxType, rc);
3597 }
3598
3599
3600 /* state change */
3601 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_DONE;
3602 kfree(dd_data);
3603 return job;
3604 }
3605
3606 /**
3607 * lpfc_bsg_issue_read_mbox_ext_cmpl - compl handler for multi-buffer read mbox
3608 * @phba: Pointer to HBA context object.
3609 * @pmboxq: Pointer to mailbox command.
3610 *
3611 * This is completion handler function for mailbox read commands with multiple
3612 * external buffers.
3613 **/
3614 static void
3615 lpfc_bsg_issue_read_mbox_ext_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
3616 {
3617 struct fc_bsg_job *job;
3618
3619 job = lpfc_bsg_issue_mbox_ext_handle_job(phba, pmboxq);
3620
3621 /* handle the BSG job with mailbox command */
3622 if (!job)
3623 pmboxq->u.mb.mbxStatus = MBXERR_ERROR;
3624
3625 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3626 "2939 SLI_CONFIG ext-buffer rd maibox command "
3627 "complete, ctxState:x%x, mbxStatus:x%x\n",
3628 phba->mbox_ext_buf_ctx.state, pmboxq->u.mb.mbxStatus);
3629
3630 if (pmboxq->u.mb.mbxStatus || phba->mbox_ext_buf_ctx.numBuf == 1)
3631 lpfc_bsg_mbox_ext_session_reset(phba);
3632
3633 /* free base driver mailbox structure memory */
3634 mempool_free(pmboxq, phba->mbox_mem_pool);
3635
3636 /* if the job is still active, call job done */
3637 if (job)
3638 job->job_done(job);
3639
3640 return;
3641 }
3642
3643 /**
3644 * lpfc_bsg_issue_write_mbox_ext_cmpl - cmpl handler for multi-buffer write mbox
3645 * @phba: Pointer to HBA context object.
3646 * @pmboxq: Pointer to mailbox command.
3647 *
3648 * This is completion handler function for mailbox write commands with multiple
3649 * external buffers.
3650 **/
3651 static void
3652 lpfc_bsg_issue_write_mbox_ext_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
3653 {
3654 struct fc_bsg_job *job;
3655
3656 job = lpfc_bsg_issue_mbox_ext_handle_job(phba, pmboxq);
3657
3658 /* handle the BSG job with the mailbox command */
3659 if (!job)
3660 pmboxq->u.mb.mbxStatus = MBXERR_ERROR;
3661
3662 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3663 "2940 SLI_CONFIG ext-buffer wr maibox command "
3664 "complete, ctxState:x%x, mbxStatus:x%x\n",
3665 phba->mbox_ext_buf_ctx.state, pmboxq->u.mb.mbxStatus);
3666
3667 /* free all memory, including dma buffers */
3668 mempool_free(pmboxq, phba->mbox_mem_pool);
3669 lpfc_bsg_mbox_ext_session_reset(phba);
3670
3671 /* if the job is still active, call job done */
3672 if (job)
3673 job->job_done(job);
3674
3675 return;
3676 }
3677
3678 static void
3679 lpfc_bsg_sli_cfg_dma_desc_setup(struct lpfc_hba *phba, enum nemb_type nemb_tp,
3680 uint32_t index, struct lpfc_dmabuf *mbx_dmabuf,
3681 struct lpfc_dmabuf *ext_dmabuf)
3682 {
3683 struct lpfc_sli_config_mbox *sli_cfg_mbx;
3684
3685 /* pointer to the start of mailbox command */
3686 sli_cfg_mbx = (struct lpfc_sli_config_mbox *)mbx_dmabuf->virt;
3687
3688 if (nemb_tp == nemb_mse) {
3689 if (index == 0) {
3690 sli_cfg_mbx->un.sli_config_emb0_subsys.
3691 mse[index].pa_hi =
3692 putPaddrHigh(mbx_dmabuf->phys +
3693 sizeof(MAILBOX_t));
3694 sli_cfg_mbx->un.sli_config_emb0_subsys.
3695 mse[index].pa_lo =
3696 putPaddrLow(mbx_dmabuf->phys +
3697 sizeof(MAILBOX_t));
3698 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3699 "2943 SLI_CONFIG(mse)[%d], "
3700 "bufLen:%d, addrHi:x%x, addrLo:x%x\n",
3701 index,
3702 sli_cfg_mbx->un.sli_config_emb0_subsys.
3703 mse[index].buf_len,
3704 sli_cfg_mbx->un.sli_config_emb0_subsys.
3705 mse[index].pa_hi,
3706 sli_cfg_mbx->un.sli_config_emb0_subsys.
3707 mse[index].pa_lo);
3708 } else {
3709 sli_cfg_mbx->un.sli_config_emb0_subsys.
3710 mse[index].pa_hi =
3711 putPaddrHigh(ext_dmabuf->phys);
3712 sli_cfg_mbx->un.sli_config_emb0_subsys.
3713 mse[index].pa_lo =
3714 putPaddrLow(ext_dmabuf->phys);
3715 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3716 "2944 SLI_CONFIG(mse)[%d], "
3717 "bufLen:%d, addrHi:x%x, addrLo:x%x\n",
3718 index,
3719 sli_cfg_mbx->un.sli_config_emb0_subsys.
3720 mse[index].buf_len,
3721 sli_cfg_mbx->un.sli_config_emb0_subsys.
3722 mse[index].pa_hi,
3723 sli_cfg_mbx->un.sli_config_emb0_subsys.
3724 mse[index].pa_lo);
3725 }
3726 } else {
3727 if (index == 0) {
3728 sli_cfg_mbx->un.sli_config_emb1_subsys.
3729 hbd[index].pa_hi =
3730 putPaddrHigh(mbx_dmabuf->phys +
3731 sizeof(MAILBOX_t));
3732 sli_cfg_mbx->un.sli_config_emb1_subsys.
3733 hbd[index].pa_lo =
3734 putPaddrLow(mbx_dmabuf->phys +
3735 sizeof(MAILBOX_t));
3736 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3737 "3007 SLI_CONFIG(hbd)[%d], "
3738 "bufLen:%d, addrHi:x%x, addrLo:x%x\n",
3739 index,
3740 bsg_bf_get(lpfc_mbox_sli_config_ecmn_hbd_len,
3741 &sli_cfg_mbx->un.
3742 sli_config_emb1_subsys.hbd[index]),
3743 sli_cfg_mbx->un.sli_config_emb1_subsys.
3744 hbd[index].pa_hi,
3745 sli_cfg_mbx->un.sli_config_emb1_subsys.
3746 hbd[index].pa_lo);
3747
3748 } else {
3749 sli_cfg_mbx->un.sli_config_emb1_subsys.
3750 hbd[index].pa_hi =
3751 putPaddrHigh(ext_dmabuf->phys);
3752 sli_cfg_mbx->un.sli_config_emb1_subsys.
3753 hbd[index].pa_lo =
3754 putPaddrLow(ext_dmabuf->phys);
3755 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3756 "3008 SLI_CONFIG(hbd)[%d], "
3757 "bufLen:%d, addrHi:x%x, addrLo:x%x\n",
3758 index,
3759 bsg_bf_get(lpfc_mbox_sli_config_ecmn_hbd_len,
3760 &sli_cfg_mbx->un.
3761 sli_config_emb1_subsys.hbd[index]),
3762 sli_cfg_mbx->un.sli_config_emb1_subsys.
3763 hbd[index].pa_hi,
3764 sli_cfg_mbx->un.sli_config_emb1_subsys.
3765 hbd[index].pa_lo);
3766 }
3767 }
3768 return;
3769 }
3770
3771 /**
3772 * lpfc_bsg_sli_cfg_mse_read_cmd_ext - sli_config non-embedded mailbox cmd read
3773 * @phba: Pointer to HBA context object.
3774 * @mb: Pointer to a BSG mailbox object.
3775 * @nemb_tp: Enumerate of non-embedded mailbox command type.
3776 * @dmabuff: Pointer to a DMA buffer descriptor.
3777 *
3778 * This routine performs SLI_CONFIG (0x9B) read mailbox command operation with
3779 * non-embedded external bufffers.
3780 **/
3781 static int
3782 lpfc_bsg_sli_cfg_read_cmd_ext(struct lpfc_hba *phba, struct fc_bsg_job *job,
3783 enum nemb_type nemb_tp,
3784 struct lpfc_dmabuf *dmabuf)
3785 {
3786 struct lpfc_sli_config_mbox *sli_cfg_mbx;
3787 struct dfc_mbox_req *mbox_req;
3788 struct lpfc_dmabuf *curr_dmabuf, *next_dmabuf;
3789 uint32_t ext_buf_cnt, ext_buf_index;
3790 struct lpfc_dmabuf *ext_dmabuf = NULL;
3791 struct bsg_job_data *dd_data = NULL;
3792 LPFC_MBOXQ_t *pmboxq = NULL;
3793 MAILBOX_t *pmb;
3794 uint8_t *pmbx;
3795 int rc, i;
3796
3797 mbox_req =
3798 (struct dfc_mbox_req *)job->request->rqst_data.h_vendor.vendor_cmd;
3799
3800 /* pointer to the start of mailbox command */
3801 sli_cfg_mbx = (struct lpfc_sli_config_mbox *)dmabuf->virt;
3802
3803 if (nemb_tp == nemb_mse) {
3804 ext_buf_cnt = bsg_bf_get(lpfc_mbox_hdr_mse_cnt,
3805 &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr);
3806 if (ext_buf_cnt > LPFC_MBX_SLI_CONFIG_MAX_MSE) {
3807 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3808 "2945 Handled SLI_CONFIG(mse) rd, "
3809 "ext_buf_cnt(%d) out of range(%d)\n",
3810 ext_buf_cnt,
3811 LPFC_MBX_SLI_CONFIG_MAX_MSE);
3812 rc = -ERANGE;
3813 goto job_error;
3814 }
3815 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3816 "2941 Handled SLI_CONFIG(mse) rd, "
3817 "ext_buf_cnt:%d\n", ext_buf_cnt);
3818 } else {
3819 /* sanity check on interface type for support */
3820 if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
3821 LPFC_SLI_INTF_IF_TYPE_2) {
3822 rc = -ENODEV;
3823 goto job_error;
3824 }
3825 /* nemb_tp == nemb_hbd */
3826 ext_buf_cnt = sli_cfg_mbx->un.sli_config_emb1_subsys.hbd_count;
3827 if (ext_buf_cnt > LPFC_MBX_SLI_CONFIG_MAX_HBD) {
3828 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3829 "2946 Handled SLI_CONFIG(hbd) rd, "
3830 "ext_buf_cnt(%d) out of range(%d)\n",
3831 ext_buf_cnt,
3832 LPFC_MBX_SLI_CONFIG_MAX_HBD);
3833 rc = -ERANGE;
3834 goto job_error;
3835 }
3836 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3837 "2942 Handled SLI_CONFIG(hbd) rd, "
3838 "ext_buf_cnt:%d\n", ext_buf_cnt);
3839 }
3840
3841 /* before dma descriptor setup */
3842 lpfc_idiag_mbxacc_dump_bsg_mbox(phba, nemb_tp, mbox_rd, dma_mbox,
3843 sta_pre_addr, dmabuf, ext_buf_cnt);
3844
3845 /* reject non-embedded mailbox command with none external buffer */
3846 if (ext_buf_cnt == 0) {
3847 rc = -EPERM;
3848 goto job_error;
3849 } else if (ext_buf_cnt > 1) {
3850 /* additional external read buffers */
3851 for (i = 1; i < ext_buf_cnt; i++) {
3852 ext_dmabuf = lpfc_bsg_dma_page_alloc(phba);
3853 if (!ext_dmabuf) {
3854 rc = -ENOMEM;
3855 goto job_error;
3856 }
3857 list_add_tail(&ext_dmabuf->list,
3858 &phba->mbox_ext_buf_ctx.ext_dmabuf_list);
3859 }
3860 }
3861
3862 /* bsg tracking structure */
3863 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
3864 if (!dd_data) {
3865 rc = -ENOMEM;
3866 goto job_error;
3867 }
3868
3869 /* mailbox command structure for base driver */
3870 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3871 if (!pmboxq) {
3872 rc = -ENOMEM;
3873 goto job_error;
3874 }
3875 memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
3876
3877 /* for the first external buffer */
3878 lpfc_bsg_sli_cfg_dma_desc_setup(phba, nemb_tp, 0, dmabuf, dmabuf);
3879
3880 /* for the rest of external buffer descriptors if any */
3881 if (ext_buf_cnt > 1) {
3882 ext_buf_index = 1;
3883 list_for_each_entry_safe(curr_dmabuf, next_dmabuf,
3884 &phba->mbox_ext_buf_ctx.ext_dmabuf_list, list) {
3885 lpfc_bsg_sli_cfg_dma_desc_setup(phba, nemb_tp,
3886 ext_buf_index, dmabuf,
3887 curr_dmabuf);
3888 ext_buf_index++;
3889 }
3890 }
3891
3892 /* after dma descriptor setup */
3893 lpfc_idiag_mbxacc_dump_bsg_mbox(phba, nemb_tp, mbox_rd, dma_mbox,
3894 sta_pos_addr, dmabuf, ext_buf_cnt);
3895
3896 /* construct base driver mbox command */
3897 pmb = &pmboxq->u.mb;
3898 pmbx = (uint8_t *)dmabuf->virt;
3899 memcpy(pmb, pmbx, sizeof(*pmb));
3900 pmb->mbxOwner = OWN_HOST;
3901 pmboxq->vport = phba->pport;
3902
3903 /* multi-buffer handling context */
3904 phba->mbox_ext_buf_ctx.nembType = nemb_tp;
3905 phba->mbox_ext_buf_ctx.mboxType = mbox_rd;
3906 phba->mbox_ext_buf_ctx.numBuf = ext_buf_cnt;
3907 phba->mbox_ext_buf_ctx.mbxTag = mbox_req->extMboxTag;
3908 phba->mbox_ext_buf_ctx.seqNum = mbox_req->extSeqNum;
3909 phba->mbox_ext_buf_ctx.mbx_dmabuf = dmabuf;
3910
3911 /* callback for multi-buffer read mailbox command */
3912 pmboxq->mbox_cmpl = lpfc_bsg_issue_read_mbox_ext_cmpl;
3913
3914 /* context fields to callback function */
3915 pmboxq->context1 = dd_data;
3916 dd_data->type = TYPE_MBOX;
3917 dd_data->set_job = job;
3918 dd_data->context_un.mbox.pmboxq = pmboxq;
3919 dd_data->context_un.mbox.mb = (MAILBOX_t *)pmbx;
3920 job->dd_data = dd_data;
3921
3922 /* state change */
3923 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_PORT;
3924
3925 /*
3926 * Non-embedded mailbox subcommand data gets byte swapped here because
3927 * the lower level driver code only does the first 64 mailbox words.
3928 */
3929 if ((!bsg_bf_get(lpfc_mbox_hdr_emb,
3930 &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr)) &&
3931 (nemb_tp == nemb_mse))
3932 lpfc_sli_pcimem_bcopy(&pmbx[sizeof(MAILBOX_t)],
3933 &pmbx[sizeof(MAILBOX_t)],
3934 sli_cfg_mbx->un.sli_config_emb0_subsys.
3935 mse[0].buf_len);
3936
3937 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
3938 if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY)) {
3939 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3940 "2947 Issued SLI_CONFIG ext-buffer "
3941 "maibox command, rc:x%x\n", rc);
3942 return SLI_CONFIG_HANDLED;
3943 }
3944 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3945 "2948 Failed to issue SLI_CONFIG ext-buffer "
3946 "maibox command, rc:x%x\n", rc);
3947 rc = -EPIPE;
3948
3949 job_error:
3950 if (pmboxq)
3951 mempool_free(pmboxq, phba->mbox_mem_pool);
3952 lpfc_bsg_dma_page_list_free(phba,
3953 &phba->mbox_ext_buf_ctx.ext_dmabuf_list);
3954 kfree(dd_data);
3955 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_IDLE;
3956 return rc;
3957 }
3958
3959 /**
3960 * lpfc_bsg_sli_cfg_write_cmd_ext - sli_config non-embedded mailbox cmd write
3961 * @phba: Pointer to HBA context object.
3962 * @mb: Pointer to a BSG mailbox object.
3963 * @dmabuff: Pointer to a DMA buffer descriptor.
3964 *
3965 * This routine performs SLI_CONFIG (0x9B) write mailbox command operation with
3966 * non-embedded external bufffers.
3967 **/
3968 static int
3969 lpfc_bsg_sli_cfg_write_cmd_ext(struct lpfc_hba *phba, struct fc_bsg_job *job,
3970 enum nemb_type nemb_tp,
3971 struct lpfc_dmabuf *dmabuf)
3972 {
3973 struct dfc_mbox_req *mbox_req;
3974 struct lpfc_sli_config_mbox *sli_cfg_mbx;
3975 uint32_t ext_buf_cnt;
3976 struct bsg_job_data *dd_data = NULL;
3977 LPFC_MBOXQ_t *pmboxq = NULL;
3978 MAILBOX_t *pmb;
3979 uint8_t *mbx;
3980 int rc = SLI_CONFIG_NOT_HANDLED, i;
3981
3982 mbox_req =
3983 (struct dfc_mbox_req *)job->request->rqst_data.h_vendor.vendor_cmd;
3984
3985 /* pointer to the start of mailbox command */
3986 sli_cfg_mbx = (struct lpfc_sli_config_mbox *)dmabuf->virt;
3987
3988 if (nemb_tp == nemb_mse) {
3989 ext_buf_cnt = bsg_bf_get(lpfc_mbox_hdr_mse_cnt,
3990 &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr);
3991 if (ext_buf_cnt > LPFC_MBX_SLI_CONFIG_MAX_MSE) {
3992 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3993 "2953 Failed SLI_CONFIG(mse) wr, "
3994 "ext_buf_cnt(%d) out of range(%d)\n",
3995 ext_buf_cnt,
3996 LPFC_MBX_SLI_CONFIG_MAX_MSE);
3997 return -ERANGE;
3998 }
3999 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4000 "2949 Handled SLI_CONFIG(mse) wr, "
4001 "ext_buf_cnt:%d\n", ext_buf_cnt);
4002 } else {
4003 /* sanity check on interface type for support */
4004 if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
4005 LPFC_SLI_INTF_IF_TYPE_2)
4006 return -ENODEV;
4007 /* nemb_tp == nemb_hbd */
4008 ext_buf_cnt = sli_cfg_mbx->un.sli_config_emb1_subsys.hbd_count;
4009 if (ext_buf_cnt > LPFC_MBX_SLI_CONFIG_MAX_HBD) {
4010 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4011 "2954 Failed SLI_CONFIG(hbd) wr, "
4012 "ext_buf_cnt(%d) out of range(%d)\n",
4013 ext_buf_cnt,
4014 LPFC_MBX_SLI_CONFIG_MAX_HBD);
4015 return -ERANGE;
4016 }
4017 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4018 "2950 Handled SLI_CONFIG(hbd) wr, "
4019 "ext_buf_cnt:%d\n", ext_buf_cnt);
4020 }
4021
4022 /* before dma buffer descriptor setup */
4023 lpfc_idiag_mbxacc_dump_bsg_mbox(phba, nemb_tp, mbox_wr, dma_mbox,
4024 sta_pre_addr, dmabuf, ext_buf_cnt);
4025
4026 if (ext_buf_cnt == 0)
4027 return -EPERM;
4028
4029 /* for the first external buffer */
4030 lpfc_bsg_sli_cfg_dma_desc_setup(phba, nemb_tp, 0, dmabuf, dmabuf);
4031
4032 /* after dma descriptor setup */
4033 lpfc_idiag_mbxacc_dump_bsg_mbox(phba, nemb_tp, mbox_wr, dma_mbox,
4034 sta_pos_addr, dmabuf, ext_buf_cnt);
4035
4036 /* log for looking forward */
4037 for (i = 1; i < ext_buf_cnt; i++) {
4038 if (nemb_tp == nemb_mse)
4039 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4040 "2951 SLI_CONFIG(mse), buf[%d]-length:%d\n",
4041 i, sli_cfg_mbx->un.sli_config_emb0_subsys.
4042 mse[i].buf_len);
4043 else
4044 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4045 "2952 SLI_CONFIG(hbd), buf[%d]-length:%d\n",
4046 i, bsg_bf_get(lpfc_mbox_sli_config_ecmn_hbd_len,
4047 &sli_cfg_mbx->un.sli_config_emb1_subsys.
4048 hbd[i]));
4049 }
4050
4051 /* multi-buffer handling context */
4052 phba->mbox_ext_buf_ctx.nembType = nemb_tp;
4053 phba->mbox_ext_buf_ctx.mboxType = mbox_wr;
4054 phba->mbox_ext_buf_ctx.numBuf = ext_buf_cnt;
4055 phba->mbox_ext_buf_ctx.mbxTag = mbox_req->extMboxTag;
4056 phba->mbox_ext_buf_ctx.seqNum = mbox_req->extSeqNum;
4057 phba->mbox_ext_buf_ctx.mbx_dmabuf = dmabuf;
4058
4059 if (ext_buf_cnt == 1) {
4060 /* bsg tracking structure */
4061 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
4062 if (!dd_data) {
4063 rc = -ENOMEM;
4064 goto job_error;
4065 }
4066
4067 /* mailbox command structure for base driver */
4068 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4069 if (!pmboxq) {
4070 rc = -ENOMEM;
4071 goto job_error;
4072 }
4073 memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
4074 pmb = &pmboxq->u.mb;
4075 mbx = (uint8_t *)dmabuf->virt;
4076 memcpy(pmb, mbx, sizeof(*pmb));
4077 pmb->mbxOwner = OWN_HOST;
4078 pmboxq->vport = phba->pport;
4079
4080 /* callback for multi-buffer read mailbox command */
4081 pmboxq->mbox_cmpl = lpfc_bsg_issue_write_mbox_ext_cmpl;
4082
4083 /* context fields to callback function */
4084 pmboxq->context1 = dd_data;
4085 dd_data->type = TYPE_MBOX;
4086 dd_data->set_job = job;
4087 dd_data->context_un.mbox.pmboxq = pmboxq;
4088 dd_data->context_un.mbox.mb = (MAILBOX_t *)mbx;
4089 job->dd_data = dd_data;
4090
4091 /* state change */
4092
4093 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_PORT;
4094 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
4095 if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY)) {
4096 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4097 "2955 Issued SLI_CONFIG ext-buffer "
4098 "maibox command, rc:x%x\n", rc);
4099 return SLI_CONFIG_HANDLED;
4100 }
4101 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4102 "2956 Failed to issue SLI_CONFIG ext-buffer "
4103 "maibox command, rc:x%x\n", rc);
4104 rc = -EPIPE;
4105 goto job_error;
4106 }
4107
4108 /* wait for additoinal external buffers */
4109
4110 job->reply->result = 0;
4111 job->job_done(job);
4112 return SLI_CONFIG_HANDLED;
4113
4114 job_error:
4115 if (pmboxq)
4116 mempool_free(pmboxq, phba->mbox_mem_pool);
4117 kfree(dd_data);
4118
4119 return rc;
4120 }
4121
4122 /**
4123 * lpfc_bsg_handle_sli_cfg_mbox - handle sli-cfg mailbox cmd with ext buffer
4124 * @phba: Pointer to HBA context object.
4125 * @mb: Pointer to a BSG mailbox object.
4126 * @dmabuff: Pointer to a DMA buffer descriptor.
4127 *
4128 * This routine handles SLI_CONFIG (0x9B) mailbox command with non-embedded
4129 * external bufffers, including both 0x9B with non-embedded MSEs and 0x9B
4130 * with embedded sussystem 0x1 and opcodes with external HBDs.
4131 **/
4132 static int
4133 lpfc_bsg_handle_sli_cfg_mbox(struct lpfc_hba *phba, struct fc_bsg_job *job,
4134 struct lpfc_dmabuf *dmabuf)
4135 {
4136 struct lpfc_sli_config_mbox *sli_cfg_mbx;
4137 uint32_t subsys;
4138 uint32_t opcode;
4139 int rc = SLI_CONFIG_NOT_HANDLED;
4140
4141 /* state change on new multi-buffer pass-through mailbox command */
4142 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_HOST;
4143
4144 sli_cfg_mbx = (struct lpfc_sli_config_mbox *)dmabuf->virt;
4145
4146 if (!bsg_bf_get(lpfc_mbox_hdr_emb,
4147 &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr)) {
4148 subsys = bsg_bf_get(lpfc_emb0_subcmnd_subsys,
4149 &sli_cfg_mbx->un.sli_config_emb0_subsys);
4150 opcode = bsg_bf_get(lpfc_emb0_subcmnd_opcode,
4151 &sli_cfg_mbx->un.sli_config_emb0_subsys);
4152 if (subsys == SLI_CONFIG_SUBSYS_FCOE) {
4153 switch (opcode) {
4154 case FCOE_OPCODE_READ_FCF:
4155 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4156 "2957 Handled SLI_CONFIG "
4157 "subsys_fcoe, opcode:x%x\n",
4158 opcode);
4159 rc = lpfc_bsg_sli_cfg_read_cmd_ext(phba, job,
4160 nemb_mse, dmabuf);
4161 break;
4162 case FCOE_OPCODE_ADD_FCF:
4163 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4164 "2958 Handled SLI_CONFIG "
4165 "subsys_fcoe, opcode:x%x\n",
4166 opcode);
4167 rc = lpfc_bsg_sli_cfg_write_cmd_ext(phba, job,
4168 nemb_mse, dmabuf);
4169 break;
4170 default:
4171 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4172 "2959 Reject SLI_CONFIG "
4173 "subsys_fcoe, opcode:x%x\n",
4174 opcode);
4175 rc = -EPERM;
4176 break;
4177 }
4178 } else if (subsys == SLI_CONFIG_SUBSYS_COMN) {
4179 switch (opcode) {
4180 case COMN_OPCODE_GET_CNTL_ADDL_ATTRIBUTES:
4181 case COMN_OPCODE_GET_CNTL_ATTRIBUTES:
4182 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4183 "3106 Handled SLI_CONFIG "
4184 "subsys_comn, opcode:x%x\n",
4185 opcode);
4186 rc = lpfc_bsg_sli_cfg_read_cmd_ext(phba, job,
4187 nemb_mse, dmabuf);
4188 break;
4189 default:
4190 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4191 "3107 Reject SLI_CONFIG "
4192 "subsys_comn, opcode:x%x\n",
4193 opcode);
4194 rc = -EPERM;
4195 break;
4196 }
4197 } else {
4198 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4199 "2977 Reject SLI_CONFIG "
4200 "subsys:x%d, opcode:x%x\n",
4201 subsys, opcode);
4202 rc = -EPERM;
4203 }
4204 } else {
4205 subsys = bsg_bf_get(lpfc_emb1_subcmnd_subsys,
4206 &sli_cfg_mbx->un.sli_config_emb1_subsys);
4207 opcode = bsg_bf_get(lpfc_emb1_subcmnd_opcode,
4208 &sli_cfg_mbx->un.sli_config_emb1_subsys);
4209 if (subsys == SLI_CONFIG_SUBSYS_COMN) {
4210 switch (opcode) {
4211 case COMN_OPCODE_READ_OBJECT:
4212 case COMN_OPCODE_READ_OBJECT_LIST:
4213 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4214 "2960 Handled SLI_CONFIG "
4215 "subsys_comn, opcode:x%x\n",
4216 opcode);
4217 rc = lpfc_bsg_sli_cfg_read_cmd_ext(phba, job,
4218 nemb_hbd, dmabuf);
4219 break;
4220 case COMN_OPCODE_WRITE_OBJECT:
4221 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4222 "2961 Handled SLI_CONFIG "
4223 "subsys_comn, opcode:x%x\n",
4224 opcode);
4225 rc = lpfc_bsg_sli_cfg_write_cmd_ext(phba, job,
4226 nemb_hbd, dmabuf);
4227 break;
4228 default:
4229 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4230 "2962 Not handled SLI_CONFIG "
4231 "subsys_comn, opcode:x%x\n",
4232 opcode);
4233 rc = SLI_CONFIG_NOT_HANDLED;
4234 break;
4235 }
4236 } else {
4237 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4238 "2978 Not handled SLI_CONFIG "
4239 "subsys:x%d, opcode:x%x\n",
4240 subsys, opcode);
4241 rc = SLI_CONFIG_NOT_HANDLED;
4242 }
4243 }
4244
4245 /* state reset on not handled new multi-buffer mailbox command */
4246 if (rc != SLI_CONFIG_HANDLED)
4247 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_IDLE;
4248
4249 return rc;
4250 }
4251
4252 /**
4253 * lpfc_bsg_mbox_ext_abort_req - request to abort mbox command with ext buffers
4254 * @phba: Pointer to HBA context object.
4255 *
4256 * This routine is for requesting to abort a pass-through mailbox command with
4257 * multiple external buffers due to error condition.
4258 **/
4259 static void
4260 lpfc_bsg_mbox_ext_abort(struct lpfc_hba *phba)
4261 {
4262 if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_PORT)
4263 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_ABTS;
4264 else
4265 lpfc_bsg_mbox_ext_session_reset(phba);
4266 return;
4267 }
4268
4269 /**
4270 * lpfc_bsg_read_ebuf_get - get the next mailbox read external buffer
4271 * @phba: Pointer to HBA context object.
4272 * @dmabuf: Pointer to a DMA buffer descriptor.
4273 *
4274 * This routine extracts the next mailbox read external buffer back to
4275 * user space through BSG.
4276 **/
4277 static int
4278 lpfc_bsg_read_ebuf_get(struct lpfc_hba *phba, struct fc_bsg_job *job)
4279 {
4280 struct lpfc_sli_config_mbox *sli_cfg_mbx;
4281 struct lpfc_dmabuf *dmabuf;
4282 uint8_t *pbuf;
4283 uint32_t size;
4284 uint32_t index;
4285
4286 index = phba->mbox_ext_buf_ctx.seqNum;
4287 phba->mbox_ext_buf_ctx.seqNum++;
4288
4289 sli_cfg_mbx = (struct lpfc_sli_config_mbox *)
4290 phba->mbox_ext_buf_ctx.mbx_dmabuf->virt;
4291
4292 if (phba->mbox_ext_buf_ctx.nembType == nemb_mse) {
4293 size = bsg_bf_get(lpfc_mbox_sli_config_mse_len,
4294 &sli_cfg_mbx->un.sli_config_emb0_subsys.mse[index]);
4295 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4296 "2963 SLI_CONFIG (mse) ext-buffer rd get "
4297 "buffer[%d], size:%d\n", index, size);
4298 } else {
4299 size = bsg_bf_get(lpfc_mbox_sli_config_ecmn_hbd_len,
4300 &sli_cfg_mbx->un.sli_config_emb1_subsys.hbd[index]);
4301 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4302 "2964 SLI_CONFIG (hbd) ext-buffer rd get "
4303 "buffer[%d], size:%d\n", index, size);
4304 }
4305 if (list_empty(&phba->mbox_ext_buf_ctx.ext_dmabuf_list))
4306 return -EPIPE;
4307 dmabuf = list_first_entry(&phba->mbox_ext_buf_ctx.ext_dmabuf_list,
4308 struct lpfc_dmabuf, list);
4309 list_del_init(&dmabuf->list);
4310
4311 /* after dma buffer descriptor setup */
4312 lpfc_idiag_mbxacc_dump_bsg_mbox(phba, phba->mbox_ext_buf_ctx.nembType,
4313 mbox_rd, dma_ebuf, sta_pos_addr,
4314 dmabuf, index);
4315
4316 pbuf = (uint8_t *)dmabuf->virt;
4317 job->reply->reply_payload_rcv_len =
4318 sg_copy_from_buffer(job->reply_payload.sg_list,
4319 job->reply_payload.sg_cnt,
4320 pbuf, size);
4321
4322 lpfc_bsg_dma_page_free(phba, dmabuf);
4323
4324 if (phba->mbox_ext_buf_ctx.seqNum == phba->mbox_ext_buf_ctx.numBuf) {
4325 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4326 "2965 SLI_CONFIG (hbd) ext-buffer rd mbox "
4327 "command session done\n");
4328 lpfc_bsg_mbox_ext_session_reset(phba);
4329 }
4330
4331 job->reply->result = 0;
4332 job->job_done(job);
4333
4334 return SLI_CONFIG_HANDLED;
4335 }
4336
4337 /**
4338 * lpfc_bsg_write_ebuf_set - set the next mailbox write external buffer
4339 * @phba: Pointer to HBA context object.
4340 * @dmabuf: Pointer to a DMA buffer descriptor.
4341 *
4342 * This routine sets up the next mailbox read external buffer obtained
4343 * from user space through BSG.
4344 **/
4345 static int
4346 lpfc_bsg_write_ebuf_set(struct lpfc_hba *phba, struct fc_bsg_job *job,
4347 struct lpfc_dmabuf *dmabuf)
4348 {
4349 struct lpfc_sli_config_mbox *sli_cfg_mbx;
4350 struct bsg_job_data *dd_data = NULL;
4351 LPFC_MBOXQ_t *pmboxq = NULL;
4352 MAILBOX_t *pmb;
4353 enum nemb_type nemb_tp;
4354 uint8_t *pbuf;
4355 uint32_t size;
4356 uint32_t index;
4357 int rc;
4358
4359 index = phba->mbox_ext_buf_ctx.seqNum;
4360 phba->mbox_ext_buf_ctx.seqNum++;
4361 nemb_tp = phba->mbox_ext_buf_ctx.nembType;
4362
4363 sli_cfg_mbx = (struct lpfc_sli_config_mbox *)
4364 phba->mbox_ext_buf_ctx.mbx_dmabuf->virt;
4365
4366 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
4367 if (!dd_data) {
4368 rc = -ENOMEM;
4369 goto job_error;
4370 }
4371
4372 pbuf = (uint8_t *)dmabuf->virt;
4373 size = job->request_payload.payload_len;
4374 sg_copy_to_buffer(job->request_payload.sg_list,
4375 job->request_payload.sg_cnt,
4376 pbuf, size);
4377
4378 if (phba->mbox_ext_buf_ctx.nembType == nemb_mse) {
4379 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4380 "2966 SLI_CONFIG (mse) ext-buffer wr set "
4381 "buffer[%d], size:%d\n",
4382 phba->mbox_ext_buf_ctx.seqNum, size);
4383
4384 } else {
4385 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4386 "2967 SLI_CONFIG (hbd) ext-buffer wr set "
4387 "buffer[%d], size:%d\n",
4388 phba->mbox_ext_buf_ctx.seqNum, size);
4389
4390 }
4391
4392 /* set up external buffer descriptor and add to external buffer list */
4393 lpfc_bsg_sli_cfg_dma_desc_setup(phba, nemb_tp, index,
4394 phba->mbox_ext_buf_ctx.mbx_dmabuf,
4395 dmabuf);
4396 list_add_tail(&dmabuf->list, &phba->mbox_ext_buf_ctx.ext_dmabuf_list);
4397
4398 /* after write dma buffer */
4399 lpfc_idiag_mbxacc_dump_bsg_mbox(phba, phba->mbox_ext_buf_ctx.nembType,
4400 mbox_wr, dma_ebuf, sta_pos_addr,
4401 dmabuf, index);
4402
4403 if (phba->mbox_ext_buf_ctx.seqNum == phba->mbox_ext_buf_ctx.numBuf) {
4404 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4405 "2968 SLI_CONFIG ext-buffer wr all %d "
4406 "ebuffers received\n",
4407 phba->mbox_ext_buf_ctx.numBuf);
4408 /* mailbox command structure for base driver */
4409 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4410 if (!pmboxq) {
4411 rc = -ENOMEM;
4412 goto job_error;
4413 }
4414 memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
4415 pbuf = (uint8_t *)phba->mbox_ext_buf_ctx.mbx_dmabuf->virt;
4416 pmb = &pmboxq->u.mb;
4417 memcpy(pmb, pbuf, sizeof(*pmb));
4418 pmb->mbxOwner = OWN_HOST;
4419 pmboxq->vport = phba->pport;
4420
4421 /* callback for multi-buffer write mailbox command */
4422 pmboxq->mbox_cmpl = lpfc_bsg_issue_write_mbox_ext_cmpl;
4423
4424 /* context fields to callback function */
4425 pmboxq->context1 = dd_data;
4426 dd_data->type = TYPE_MBOX;
4427 dd_data->set_job = job;
4428 dd_data->context_un.mbox.pmboxq = pmboxq;
4429 dd_data->context_un.mbox.mb = (MAILBOX_t *)pbuf;
4430 job->dd_data = dd_data;
4431
4432 /* state change */
4433 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_PORT;
4434
4435 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
4436 if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY)) {
4437 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4438 "2969 Issued SLI_CONFIG ext-buffer "
4439 "maibox command, rc:x%x\n", rc);
4440 return SLI_CONFIG_HANDLED;
4441 }
4442 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4443 "2970 Failed to issue SLI_CONFIG ext-buffer "
4444 "maibox command, rc:x%x\n", rc);
4445 rc = -EPIPE;
4446 goto job_error;
4447 }
4448
4449 /* wait for additoinal external buffers */
4450 job->reply->result = 0;
4451 job->job_done(job);
4452 return SLI_CONFIG_HANDLED;
4453
4454 job_error:
4455 lpfc_bsg_dma_page_free(phba, dmabuf);
4456 kfree(dd_data);
4457
4458 return rc;
4459 }
4460
4461 /**
4462 * lpfc_bsg_handle_sli_cfg_ebuf - handle ext buffer with sli-cfg mailbox cmd
4463 * @phba: Pointer to HBA context object.
4464 * @mb: Pointer to a BSG mailbox object.
4465 * @dmabuff: Pointer to a DMA buffer descriptor.
4466 *
4467 * This routine handles the external buffer with SLI_CONFIG (0x9B) mailbox
4468 * command with multiple non-embedded external buffers.
4469 **/
4470 static int
4471 lpfc_bsg_handle_sli_cfg_ebuf(struct lpfc_hba *phba, struct fc_bsg_job *job,
4472 struct lpfc_dmabuf *dmabuf)
4473 {
4474 int rc;
4475
4476 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4477 "2971 SLI_CONFIG buffer (type:x%x)\n",
4478 phba->mbox_ext_buf_ctx.mboxType);
4479
4480 if (phba->mbox_ext_buf_ctx.mboxType == mbox_rd) {
4481 if (phba->mbox_ext_buf_ctx.state != LPFC_BSG_MBOX_DONE) {
4482 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4483 "2972 SLI_CONFIG rd buffer state "
4484 "mismatch:x%x\n",
4485 phba->mbox_ext_buf_ctx.state);
4486 lpfc_bsg_mbox_ext_abort(phba);
4487 return -EPIPE;
4488 }
4489 rc = lpfc_bsg_read_ebuf_get(phba, job);
4490 if (rc == SLI_CONFIG_HANDLED)
4491 lpfc_bsg_dma_page_free(phba, dmabuf);
4492 } else { /* phba->mbox_ext_buf_ctx.mboxType == mbox_wr */
4493 if (phba->mbox_ext_buf_ctx.state != LPFC_BSG_MBOX_HOST) {
4494 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4495 "2973 SLI_CONFIG wr buffer state "
4496 "mismatch:x%x\n",
4497 phba->mbox_ext_buf_ctx.state);
4498 lpfc_bsg_mbox_ext_abort(phba);
4499 return -EPIPE;
4500 }
4501 rc = lpfc_bsg_write_ebuf_set(phba, job, dmabuf);
4502 }
4503 return rc;
4504 }
4505
4506 /**
4507 * lpfc_bsg_handle_sli_cfg_ext - handle sli-cfg mailbox with external buffer
4508 * @phba: Pointer to HBA context object.
4509 * @mb: Pointer to a BSG mailbox object.
4510 * @dmabuff: Pointer to a DMA buffer descriptor.
4511 *
4512 * This routine checkes and handles non-embedded multi-buffer SLI_CONFIG
4513 * (0x9B) mailbox commands and external buffers.
4514 **/
4515 static int
4516 lpfc_bsg_handle_sli_cfg_ext(struct lpfc_hba *phba, struct fc_bsg_job *job,
4517 struct lpfc_dmabuf *dmabuf)
4518 {
4519 struct dfc_mbox_req *mbox_req;
4520 int rc = SLI_CONFIG_NOT_HANDLED;
4521
4522 mbox_req =
4523 (struct dfc_mbox_req *)job->request->rqst_data.h_vendor.vendor_cmd;
4524
4525 /* mbox command with/without single external buffer */
4526 if (mbox_req->extMboxTag == 0 && mbox_req->extSeqNum == 0)
4527 return rc;
4528
4529 /* mbox command and first external buffer */
4530 if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_IDLE) {
4531 if (mbox_req->extSeqNum == 1) {
4532 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4533 "2974 SLI_CONFIG mailbox: tag:%d, "
4534 "seq:%d\n", mbox_req->extMboxTag,
4535 mbox_req->extSeqNum);
4536 rc = lpfc_bsg_handle_sli_cfg_mbox(phba, job, dmabuf);
4537 return rc;
4538 } else
4539 goto sli_cfg_ext_error;
4540 }
4541
4542 /*
4543 * handle additional external buffers
4544 */
4545
4546 /* check broken pipe conditions */
4547 if (mbox_req->extMboxTag != phba->mbox_ext_buf_ctx.mbxTag)
4548 goto sli_cfg_ext_error;
4549 if (mbox_req->extSeqNum > phba->mbox_ext_buf_ctx.numBuf)
4550 goto sli_cfg_ext_error;
4551 if (mbox_req->extSeqNum != phba->mbox_ext_buf_ctx.seqNum + 1)
4552 goto sli_cfg_ext_error;
4553
4554 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4555 "2975 SLI_CONFIG mailbox external buffer: "
4556 "extSta:x%x, tag:%d, seq:%d\n",
4557 phba->mbox_ext_buf_ctx.state, mbox_req->extMboxTag,
4558 mbox_req->extSeqNum);
4559 rc = lpfc_bsg_handle_sli_cfg_ebuf(phba, job, dmabuf);
4560 return rc;
4561
4562 sli_cfg_ext_error:
4563 /* all other cases, broken pipe */
4564 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4565 "2976 SLI_CONFIG mailbox broken pipe: "
4566 "ctxSta:x%x, ctxNumBuf:%d "
4567 "ctxTag:%d, ctxSeq:%d, tag:%d, seq:%d\n",
4568 phba->mbox_ext_buf_ctx.state,
4569 phba->mbox_ext_buf_ctx.numBuf,
4570 phba->mbox_ext_buf_ctx.mbxTag,
4571 phba->mbox_ext_buf_ctx.seqNum,
4572 mbox_req->extMboxTag, mbox_req->extSeqNum);
4573
4574 lpfc_bsg_mbox_ext_session_reset(phba);
4575
4576 return -EPIPE;
4577 }
4578
4579 /**
4580 * lpfc_bsg_issue_mbox - issues a mailbox command on behalf of an app
4581 * @phba: Pointer to HBA context object.
4582 * @mb: Pointer to a mailbox object.
4583 * @vport: Pointer to a vport object.
4584 *
4585 * Allocate a tracking object, mailbox command memory, get a mailbox
4586 * from the mailbox pool, copy the caller mailbox command.
4587 *
4588 * If offline and the sli is active we need to poll for the command (port is
4589 * being reset) and com-plete the job, otherwise issue the mailbox command and
4590 * let our completion handler finish the command.
4591 **/
4592 static uint32_t
4593 lpfc_bsg_issue_mbox(struct lpfc_hba *phba, struct fc_bsg_job *job,
4594 struct lpfc_vport *vport)
4595 {
4596 LPFC_MBOXQ_t *pmboxq = NULL; /* internal mailbox queue */
4597 MAILBOX_t *pmb; /* shortcut to the pmboxq mailbox */
4598 /* a 4k buffer to hold the mb and extended data from/to the bsg */
4599 uint8_t *pmbx = NULL;
4600 struct bsg_job_data *dd_data = NULL; /* bsg data tracking structure */
4601 struct lpfc_dmabuf *dmabuf = NULL;
4602 struct dfc_mbox_req *mbox_req;
4603 struct READ_EVENT_LOG_VAR *rdEventLog;
4604 uint32_t transmit_length, receive_length, mode;
4605 struct lpfc_mbx_sli4_config *sli4_config;
4606 struct lpfc_mbx_nembed_cmd *nembed_sge;
4607 struct mbox_header *header;
4608 struct ulp_bde64 *bde;
4609 uint8_t *ext = NULL;
4610 int rc = 0;
4611 uint8_t *from;
4612 uint32_t size;
4613
4614 /* in case no data is transferred */
4615 job->reply->reply_payload_rcv_len = 0;
4616
4617 /* sanity check to protect driver */
4618 if (job->reply_payload.payload_len > BSG_MBOX_SIZE ||
4619 job->request_payload.payload_len > BSG_MBOX_SIZE) {
4620 rc = -ERANGE;
4621 goto job_done;
4622 }
4623
4624 /*
4625 * Don't allow mailbox commands to be sent when blocked or when in
4626 * the middle of discovery
4627 */
4628 if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) {
4629 rc = -EAGAIN;
4630 goto job_done;
4631 }
4632
4633 mbox_req =
4634 (struct dfc_mbox_req *)job->request->rqst_data.h_vendor.vendor_cmd;
4635
4636 /* check if requested extended data lengths are valid */
4637 if ((mbox_req->inExtWLen > BSG_MBOX_SIZE/sizeof(uint32_t)) ||
4638 (mbox_req->outExtWLen > BSG_MBOX_SIZE/sizeof(uint32_t))) {
4639 rc = -ERANGE;
4640 goto job_done;
4641 }
4642
4643 dmabuf = lpfc_bsg_dma_page_alloc(phba);
4644 if (!dmabuf || !dmabuf->virt) {
4645 rc = -ENOMEM;
4646 goto job_done;
4647 }
4648
4649 /* Get the mailbox command or external buffer from BSG */
4650 pmbx = (uint8_t *)dmabuf->virt;
4651 size = job->request_payload.payload_len;
4652 sg_copy_to_buffer(job->request_payload.sg_list,
4653 job->request_payload.sg_cnt, pmbx, size);
4654
4655 /* Handle possible SLI_CONFIG with non-embedded payloads */
4656 if (phba->sli_rev == LPFC_SLI_REV4) {
4657 rc = lpfc_bsg_handle_sli_cfg_ext(phba, job, dmabuf);
4658 if (rc == SLI_CONFIG_HANDLED)
4659 goto job_cont;
4660 if (rc)
4661 goto job_done;
4662 /* SLI_CONFIG_NOT_HANDLED for other mailbox commands */
4663 }
4664
4665 rc = lpfc_bsg_check_cmd_access(phba, (MAILBOX_t *)pmbx, vport);
4666 if (rc != 0)
4667 goto job_done; /* must be negative */
4668
4669 /* allocate our bsg tracking structure */
4670 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
4671 if (!dd_data) {
4672 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
4673 "2727 Failed allocation of dd_data\n");
4674 rc = -ENOMEM;
4675 goto job_done;
4676 }
4677
4678 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4679 if (!pmboxq) {
4680 rc = -ENOMEM;
4681 goto job_done;
4682 }
4683 memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
4684
4685 pmb = &pmboxq->u.mb;
4686 memcpy(pmb, pmbx, sizeof(*pmb));
4687 pmb->mbxOwner = OWN_HOST;
4688 pmboxq->vport = vport;
4689
4690 /* If HBA encountered an error attention, allow only DUMP
4691 * or RESTART mailbox commands until the HBA is restarted.
4692 */
4693 if (phba->pport->stopped &&
4694 pmb->mbxCommand != MBX_DUMP_MEMORY &&
4695 pmb->mbxCommand != MBX_RESTART &&
4696 pmb->mbxCommand != MBX_WRITE_VPARMS &&
4697 pmb->mbxCommand != MBX_WRITE_WWN)
4698 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX,
4699 "2797 mbox: Issued mailbox cmd "
4700 "0x%x while in stopped state.\n",
4701 pmb->mbxCommand);
4702
4703 /* extended mailbox commands will need an extended buffer */
4704 if (mbox_req->inExtWLen || mbox_req->outExtWLen) {
4705 from = pmbx;
4706 ext = from + sizeof(MAILBOX_t);
4707 pmboxq->context2 = ext;
4708 pmboxq->in_ext_byte_len =
4709 mbox_req->inExtWLen * sizeof(uint32_t);
4710 pmboxq->out_ext_byte_len =
4711 mbox_req->outExtWLen * sizeof(uint32_t);
4712 pmboxq->mbox_offset_word = mbox_req->mbOffset;
4713 }
4714
4715 /* biu diag will need a kernel buffer to transfer the data
4716 * allocate our own buffer and setup the mailbox command to
4717 * use ours
4718 */
4719 if (pmb->mbxCommand == MBX_RUN_BIU_DIAG64) {
4720 transmit_length = pmb->un.varWords[1];
4721 receive_length = pmb->un.varWords[4];
4722 /* transmit length cannot be greater than receive length or
4723 * mailbox extension size
4724 */
4725 if ((transmit_length > receive_length) ||
4726 (transmit_length > BSG_MBOX_SIZE - sizeof(MAILBOX_t))) {
4727 rc = -ERANGE;
4728 goto job_done;
4729 }
4730 pmb->un.varBIUdiag.un.s2.xmit_bde64.addrHigh =
4731 putPaddrHigh(dmabuf->phys + sizeof(MAILBOX_t));
4732 pmb->un.varBIUdiag.un.s2.xmit_bde64.addrLow =
4733 putPaddrLow(dmabuf->phys + sizeof(MAILBOX_t));
4734
4735 pmb->un.varBIUdiag.un.s2.rcv_bde64.addrHigh =
4736 putPaddrHigh(dmabuf->phys + sizeof(MAILBOX_t)
4737 + pmb->un.varBIUdiag.un.s2.xmit_bde64.tus.f.bdeSize);
4738 pmb->un.varBIUdiag.un.s2.rcv_bde64.addrLow =
4739 putPaddrLow(dmabuf->phys + sizeof(MAILBOX_t)
4740 + pmb->un.varBIUdiag.un.s2.xmit_bde64.tus.f.bdeSize);
4741 } else if (pmb->mbxCommand == MBX_READ_EVENT_LOG) {
4742 rdEventLog = &pmb->un.varRdEventLog;
4743 receive_length = rdEventLog->rcv_bde64.tus.f.bdeSize;
4744 mode = bf_get(lpfc_event_log, rdEventLog);
4745
4746 /* receive length cannot be greater than mailbox
4747 * extension size
4748 */
4749 if (receive_length > BSG_MBOX_SIZE - sizeof(MAILBOX_t)) {
4750 rc = -ERANGE;
4751 goto job_done;
4752 }
4753
4754 /* mode zero uses a bde like biu diags command */
4755 if (mode == 0) {
4756 pmb->un.varWords[3] = putPaddrLow(dmabuf->phys
4757 + sizeof(MAILBOX_t));
4758 pmb->un.varWords[4] = putPaddrHigh(dmabuf->phys
4759 + sizeof(MAILBOX_t));
4760 }
4761 } else if (phba->sli_rev == LPFC_SLI_REV4) {
4762 /* Let type 4 (well known data) through because the data is
4763 * returned in varwords[4-8]
4764 * otherwise check the recieve length and fetch the buffer addr
4765 */
4766 if ((pmb->mbxCommand == MBX_DUMP_MEMORY) &&
4767 (pmb->un.varDmp.type != DMP_WELL_KNOWN)) {
4768 /* rebuild the command for sli4 using our own buffers
4769 * like we do for biu diags
4770 */
4771 receive_length = pmb->un.varWords[2];
4772 /* receive length cannot be greater than mailbox
4773 * extension size
4774 */
4775 if (receive_length == 0) {
4776 rc = -ERANGE;
4777 goto job_done;
4778 }
4779 pmb->un.varWords[3] = putPaddrLow(dmabuf->phys
4780 + sizeof(MAILBOX_t));
4781 pmb->un.varWords[4] = putPaddrHigh(dmabuf->phys
4782 + sizeof(MAILBOX_t));
4783 } else if ((pmb->mbxCommand == MBX_UPDATE_CFG) &&
4784 pmb->un.varUpdateCfg.co) {
4785 bde = (struct ulp_bde64 *)&pmb->un.varWords[4];
4786
4787 /* bde size cannot be greater than mailbox ext size */
4788 if (bde->tus.f.bdeSize >
4789 BSG_MBOX_SIZE - sizeof(MAILBOX_t)) {
4790 rc = -ERANGE;
4791 goto job_done;
4792 }
4793 bde->addrHigh = putPaddrHigh(dmabuf->phys
4794 + sizeof(MAILBOX_t));
4795 bde->addrLow = putPaddrLow(dmabuf->phys
4796 + sizeof(MAILBOX_t));
4797 } else if (pmb->mbxCommand == MBX_SLI4_CONFIG) {
4798 /* Handling non-embedded SLI_CONFIG mailbox command */
4799 sli4_config = &pmboxq->u.mqe.un.sli4_config;
4800 if (!bf_get(lpfc_mbox_hdr_emb,
4801 &sli4_config->header.cfg_mhdr)) {
4802 /* rebuild the command for sli4 using our
4803 * own buffers like we do for biu diags
4804 */
4805 header = (struct mbox_header *)
4806 &pmb->un.varWords[0];
4807 nembed_sge = (struct lpfc_mbx_nembed_cmd *)
4808 &pmb->un.varWords[0];
4809 receive_length = nembed_sge->sge[0].length;
4810
4811 /* receive length cannot be greater than
4812 * mailbox extension size
4813 */
4814 if ((receive_length == 0) ||
4815 (receive_length >
4816 BSG_MBOX_SIZE - sizeof(MAILBOX_t))) {
4817 rc = -ERANGE;
4818 goto job_done;
4819 }
4820
4821 nembed_sge->sge[0].pa_hi =
4822 putPaddrHigh(dmabuf->phys
4823 + sizeof(MAILBOX_t));
4824 nembed_sge->sge[0].pa_lo =
4825 putPaddrLow(dmabuf->phys
4826 + sizeof(MAILBOX_t));
4827 }
4828 }
4829 }
4830
4831 dd_data->context_un.mbox.dmabuffers = dmabuf;
4832
4833 /* setup wake call as IOCB callback */
4834 pmboxq->mbox_cmpl = lpfc_bsg_issue_mbox_cmpl;
4835
4836 /* setup context field to pass wait_queue pointer to wake function */
4837 pmboxq->context1 = dd_data;
4838 dd_data->type = TYPE_MBOX;
4839 dd_data->set_job = job;
4840 dd_data->context_un.mbox.pmboxq = pmboxq;
4841 dd_data->context_un.mbox.mb = (MAILBOX_t *)pmbx;
4842 dd_data->context_un.mbox.ext = ext;
4843 dd_data->context_un.mbox.mbOffset = mbox_req->mbOffset;
4844 dd_data->context_un.mbox.inExtWLen = mbox_req->inExtWLen;
4845 dd_data->context_un.mbox.outExtWLen = mbox_req->outExtWLen;
4846 job->dd_data = dd_data;
4847
4848 if ((vport->fc_flag & FC_OFFLINE_MODE) ||
4849 (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE))) {
4850 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
4851 if (rc != MBX_SUCCESS) {
4852 rc = (rc == MBX_TIMEOUT) ? -ETIME : -ENODEV;
4853 goto job_done;
4854 }
4855
4856 /* job finished, copy the data */
4857 memcpy(pmbx, pmb, sizeof(*pmb));
4858 job->reply->reply_payload_rcv_len =
4859 sg_copy_from_buffer(job->reply_payload.sg_list,
4860 job->reply_payload.sg_cnt,
4861 pmbx, size);
4862 /* not waiting mbox already done */
4863 rc = 0;
4864 goto job_done;
4865 }
4866
4867 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
4868 if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY))
4869 return 1; /* job started */
4870
4871 job_done:
4872 /* common exit for error or job completed inline */
4873 if (pmboxq)
4874 mempool_free(pmboxq, phba->mbox_mem_pool);
4875 lpfc_bsg_dma_page_free(phba, dmabuf);
4876 kfree(dd_data);
4877
4878 job_cont:
4879 return rc;
4880 }
4881
4882 /**
4883 * lpfc_bsg_mbox_cmd - process an fc bsg LPFC_BSG_VENDOR_MBOX command
4884 * @job: MBOX fc_bsg_job for LPFC_BSG_VENDOR_MBOX.
4885 **/
4886 static int
4887 lpfc_bsg_mbox_cmd(struct fc_bsg_job *job)
4888 {
4889 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
4890 struct lpfc_hba *phba = vport->phba;
4891 struct dfc_mbox_req *mbox_req;
4892 int rc = 0;
4893
4894 /* mix-and-match backward compatibility */
4895 job->reply->reply_payload_rcv_len = 0;
4896 if (job->request_len <
4897 sizeof(struct fc_bsg_request) + sizeof(struct dfc_mbox_req)) {
4898 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4899 "2737 Mix-and-match backward compatibility "
4900 "between MBOX_REQ old size:%d and "
4901 "new request size:%d\n",
4902 (int)(job->request_len -
4903 sizeof(struct fc_bsg_request)),
4904 (int)sizeof(struct dfc_mbox_req));
4905 mbox_req = (struct dfc_mbox_req *)
4906 job->request->rqst_data.h_vendor.vendor_cmd;
4907 mbox_req->extMboxTag = 0;
4908 mbox_req->extSeqNum = 0;
4909 }
4910
4911 rc = lpfc_bsg_issue_mbox(phba, job, vport);
4912
4913 if (rc == 0) {
4914 /* job done */
4915 job->reply->result = 0;
4916 job->dd_data = NULL;
4917 job->job_done(job);
4918 } else if (rc == 1)
4919 /* job submitted, will complete later*/
4920 rc = 0; /* return zero, no error */
4921 else {
4922 /* some error occurred */
4923 job->reply->result = rc;
4924 job->dd_data = NULL;
4925 }
4926
4927 return rc;
4928 }
4929
4930 /**
4931 * lpfc_bsg_menlo_cmd_cmp - lpfc_menlo_cmd completion handler
4932 * @phba: Pointer to HBA context object.
4933 * @cmdiocbq: Pointer to command iocb.
4934 * @rspiocbq: Pointer to response iocb.
4935 *
4936 * This function is the completion handler for iocbs issued using
4937 * lpfc_menlo_cmd function. This function is called by the
4938 * ring event handler function without any lock held. This function
4939 * can be called from both worker thread context and interrupt
4940 * context. This function also can be called from another thread which
4941 * cleans up the SLI layer objects.
4942 * This function copies the contents of the response iocb to the
4943 * response iocb memory object provided by the caller of
4944 * lpfc_sli_issue_iocb_wait and then wakes up the thread which
4945 * sleeps for the iocb completion.
4946 **/
4947 static void
4948 lpfc_bsg_menlo_cmd_cmp(struct lpfc_hba *phba,
4949 struct lpfc_iocbq *cmdiocbq,
4950 struct lpfc_iocbq *rspiocbq)
4951 {
4952 struct bsg_job_data *dd_data;
4953 struct fc_bsg_job *job;
4954 IOCB_t *rsp;
4955 struct lpfc_dmabuf *bmp, *cmp, *rmp;
4956 struct lpfc_bsg_menlo *menlo;
4957 unsigned long flags;
4958 struct menlo_response *menlo_resp;
4959 unsigned int rsp_size;
4960 int rc = 0;
4961
4962 dd_data = cmdiocbq->context1;
4963 cmp = cmdiocbq->context2;
4964 bmp = cmdiocbq->context3;
4965 menlo = &dd_data->context_un.menlo;
4966 rmp = menlo->rmp;
4967 rsp = &rspiocbq->iocb;
4968
4969 /* Determine if job has been aborted */
4970 spin_lock_irqsave(&phba->ct_ev_lock, flags);
4971 job = dd_data->set_job;
4972 if (job) {
4973 /* Prevent timeout handling from trying to abort job */
4974 job->dd_data = NULL;
4975 }
4976 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
4977
4978 /* Copy the job data or set the failing status for the job */
4979
4980 if (job) {
4981 /* always return the xri, this would be used in the case
4982 * of a menlo download to allow the data to be sent as a
4983 * continuation of the exchange.
4984 */
4985
4986 menlo_resp = (struct menlo_response *)
4987 job->reply->reply_data.vendor_reply.vendor_rsp;
4988 menlo_resp->xri = rsp->ulpContext;
4989 if (rsp->ulpStatus) {
4990 if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
4991 switch (rsp->un.ulpWord[4] & IOERR_PARAM_MASK) {
4992 case IOERR_SEQUENCE_TIMEOUT:
4993 rc = -ETIMEDOUT;
4994 break;
4995 case IOERR_INVALID_RPI:
4996 rc = -EFAULT;
4997 break;
4998 default:
4999 rc = -EACCES;
5000 break;
5001 }
5002 } else {
5003 rc = -EACCES;
5004 }
5005 } else {
5006 rsp_size = rsp->un.genreq64.bdl.bdeSize;
5007 job->reply->reply_payload_rcv_len =
5008 lpfc_bsg_copy_data(rmp, &job->reply_payload,
5009 rsp_size, 0);
5010 }
5011
5012 }
5013
5014 lpfc_sli_release_iocbq(phba, cmdiocbq);
5015 lpfc_free_bsg_buffers(phba, cmp);
5016 lpfc_free_bsg_buffers(phba, rmp);
5017 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
5018 kfree(bmp);
5019 kfree(dd_data);
5020
5021 /* Complete the job if active */
5022
5023 if (job) {
5024 job->reply->result = rc;
5025 job->job_done(job);
5026 }
5027
5028 return;
5029 }
5030
5031 /**
5032 * lpfc_menlo_cmd - send an ioctl for menlo hardware
5033 * @job: fc_bsg_job to handle
5034 *
5035 * This function issues a gen request 64 CR ioctl for all menlo cmd requests,
5036 * all the command completions will return the xri for the command.
5037 * For menlo data requests a gen request 64 CX is used to continue the exchange
5038 * supplied in the menlo request header xri field.
5039 **/
5040 static int
5041 lpfc_menlo_cmd(struct fc_bsg_job *job)
5042 {
5043 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
5044 struct lpfc_hba *phba = vport->phba;
5045 struct lpfc_iocbq *cmdiocbq;
5046 IOCB_t *cmd;
5047 int rc = 0;
5048 struct menlo_command *menlo_cmd;
5049 struct menlo_response *menlo_resp;
5050 struct lpfc_dmabuf *bmp = NULL, *cmp = NULL, *rmp = NULL;
5051 int request_nseg;
5052 int reply_nseg;
5053 struct bsg_job_data *dd_data;
5054 struct ulp_bde64 *bpl = NULL;
5055
5056 /* in case no data is returned return just the return code */
5057 job->reply->reply_payload_rcv_len = 0;
5058
5059 if (job->request_len <
5060 sizeof(struct fc_bsg_request) +
5061 sizeof(struct menlo_command)) {
5062 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
5063 "2784 Received MENLO_CMD request below "
5064 "minimum size\n");
5065 rc = -ERANGE;
5066 goto no_dd_data;
5067 }
5068
5069 if (job->reply_len <
5070 sizeof(struct fc_bsg_request) + sizeof(struct menlo_response)) {
5071 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
5072 "2785 Received MENLO_CMD reply below "
5073 "minimum size\n");
5074 rc = -ERANGE;
5075 goto no_dd_data;
5076 }
5077
5078 if (!(phba->menlo_flag & HBA_MENLO_SUPPORT)) {
5079 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
5080 "2786 Adapter does not support menlo "
5081 "commands\n");
5082 rc = -EPERM;
5083 goto no_dd_data;
5084 }
5085
5086 menlo_cmd = (struct menlo_command *)
5087 job->request->rqst_data.h_vendor.vendor_cmd;
5088
5089 menlo_resp = (struct menlo_response *)
5090 job->reply->reply_data.vendor_reply.vendor_rsp;
5091
5092 /* allocate our bsg tracking structure */
5093 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
5094 if (!dd_data) {
5095 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
5096 "2787 Failed allocation of dd_data\n");
5097 rc = -ENOMEM;
5098 goto no_dd_data;
5099 }
5100
5101 bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
5102 if (!bmp) {
5103 rc = -ENOMEM;
5104 goto free_dd;
5105 }
5106
5107 bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys);
5108 if (!bmp->virt) {
5109 rc = -ENOMEM;
5110 goto free_bmp;
5111 }
5112
5113 INIT_LIST_HEAD(&bmp->list);
5114
5115 bpl = (struct ulp_bde64 *)bmp->virt;
5116 request_nseg = LPFC_BPL_SIZE/sizeof(struct ulp_bde64);
5117 cmp = lpfc_alloc_bsg_buffers(phba, job->request_payload.payload_len,
5118 1, bpl, &request_nseg);
5119 if (!cmp) {
5120 rc = -ENOMEM;
5121 goto free_bmp;
5122 }
5123 lpfc_bsg_copy_data(cmp, &job->request_payload,
5124 job->request_payload.payload_len, 1);
5125
5126 bpl += request_nseg;
5127 reply_nseg = LPFC_BPL_SIZE/sizeof(struct ulp_bde64) - request_nseg;
5128 rmp = lpfc_alloc_bsg_buffers(phba, job->reply_payload.payload_len, 0,
5129 bpl, &reply_nseg);
5130 if (!rmp) {
5131 rc = -ENOMEM;
5132 goto free_cmp;
5133 }
5134
5135 cmdiocbq = lpfc_sli_get_iocbq(phba);
5136 if (!cmdiocbq) {
5137 rc = -ENOMEM;
5138 goto free_rmp;
5139 }
5140
5141 cmd = &cmdiocbq->iocb;
5142 cmd->un.genreq64.bdl.ulpIoTag32 = 0;
5143 cmd->un.genreq64.bdl.addrHigh = putPaddrHigh(bmp->phys);
5144 cmd->un.genreq64.bdl.addrLow = putPaddrLow(bmp->phys);
5145 cmd->un.genreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
5146 cmd->un.genreq64.bdl.bdeSize =
5147 (request_nseg + reply_nseg) * sizeof(struct ulp_bde64);
5148 cmd->un.genreq64.w5.hcsw.Fctl = (SI | LA);
5149 cmd->un.genreq64.w5.hcsw.Dfctl = 0;
5150 cmd->un.genreq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CMD;
5151 cmd->un.genreq64.w5.hcsw.Type = MENLO_TRANSPORT_TYPE; /* 0xfe */
5152 cmd->ulpBdeCount = 1;
5153 cmd->ulpClass = CLASS3;
5154 cmd->ulpOwner = OWN_CHIP;
5155 cmd->ulpLe = 1; /* Limited Edition */
5156 cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
5157 cmdiocbq->vport = phba->pport;
5158 /* We want the firmware to timeout before we do */
5159 cmd->ulpTimeout = MENLO_TIMEOUT - 5;
5160 cmdiocbq->iocb_cmpl = lpfc_bsg_menlo_cmd_cmp;
5161 cmdiocbq->context1 = dd_data;
5162 cmdiocbq->context2 = cmp;
5163 cmdiocbq->context3 = bmp;
5164 if (menlo_cmd->cmd == LPFC_BSG_VENDOR_MENLO_CMD) {
5165 cmd->ulpCommand = CMD_GEN_REQUEST64_CR;
5166 cmd->ulpPU = MENLO_PU; /* 3 */
5167 cmd->un.ulpWord[4] = MENLO_DID; /* 0x0000FC0E */
5168 cmd->ulpContext = MENLO_CONTEXT; /* 0 */
5169 } else {
5170 cmd->ulpCommand = CMD_GEN_REQUEST64_CX;
5171 cmd->ulpPU = 1;
5172 cmd->un.ulpWord[4] = 0;
5173 cmd->ulpContext = menlo_cmd->xri;
5174 }
5175
5176 dd_data->type = TYPE_MENLO;
5177 dd_data->set_job = job;
5178 dd_data->context_un.menlo.cmdiocbq = cmdiocbq;
5179 dd_data->context_un.menlo.rmp = rmp;
5180 job->dd_data = dd_data;
5181
5182 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq,
5183 MENLO_TIMEOUT - 5);
5184 if (rc == IOCB_SUCCESS)
5185 return 0; /* done for now */
5186
5187 lpfc_sli_release_iocbq(phba, cmdiocbq);
5188
5189 free_rmp:
5190 lpfc_free_bsg_buffers(phba, rmp);
5191 free_cmp:
5192 lpfc_free_bsg_buffers(phba, cmp);
5193 free_bmp:
5194 if (bmp->virt)
5195 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
5196 kfree(bmp);
5197 free_dd:
5198 kfree(dd_data);
5199 no_dd_data:
5200 /* make error code available to userspace */
5201 job->reply->result = rc;
5202 job->dd_data = NULL;
5203 return rc;
5204 }
5205
5206 /**
5207 * lpfc_bsg_hst_vendor - process a vendor-specific fc_bsg_job
5208 * @job: fc_bsg_job to handle
5209 **/
5210 static int
5211 lpfc_bsg_hst_vendor(struct fc_bsg_job *job)
5212 {
5213 int command = job->request->rqst_data.h_vendor.vendor_cmd[0];
5214 int rc;
5215
5216 switch (command) {
5217 case LPFC_BSG_VENDOR_SET_CT_EVENT:
5218 rc = lpfc_bsg_hba_set_event(job);
5219 break;
5220 case LPFC_BSG_VENDOR_GET_CT_EVENT:
5221 rc = lpfc_bsg_hba_get_event(job);
5222 break;
5223 case LPFC_BSG_VENDOR_SEND_MGMT_RESP:
5224 rc = lpfc_bsg_send_mgmt_rsp(job);
5225 break;
5226 case LPFC_BSG_VENDOR_DIAG_MODE:
5227 rc = lpfc_bsg_diag_loopback_mode(job);
5228 break;
5229 case LPFC_BSG_VENDOR_DIAG_MODE_END:
5230 rc = lpfc_sli4_bsg_diag_mode_end(job);
5231 break;
5232 case LPFC_BSG_VENDOR_DIAG_RUN_LOOPBACK:
5233 rc = lpfc_bsg_diag_loopback_run(job);
5234 break;
5235 case LPFC_BSG_VENDOR_LINK_DIAG_TEST:
5236 rc = lpfc_sli4_bsg_link_diag_test(job);
5237 break;
5238 case LPFC_BSG_VENDOR_GET_MGMT_REV:
5239 rc = lpfc_bsg_get_dfc_rev(job);
5240 break;
5241 case LPFC_BSG_VENDOR_MBOX:
5242 rc = lpfc_bsg_mbox_cmd(job);
5243 break;
5244 case LPFC_BSG_VENDOR_MENLO_CMD:
5245 case LPFC_BSG_VENDOR_MENLO_DATA:
5246 rc = lpfc_menlo_cmd(job);
5247 break;
5248 default:
5249 rc = -EINVAL;
5250 job->reply->reply_payload_rcv_len = 0;
5251 /* make error code available to userspace */
5252 job->reply->result = rc;
5253 break;
5254 }
5255
5256 return rc;
5257 }
5258
5259 /**
5260 * lpfc_bsg_request - handle a bsg request from the FC transport
5261 * @job: fc_bsg_job to handle
5262 **/
5263 int
5264 lpfc_bsg_request(struct fc_bsg_job *job)
5265 {
5266 uint32_t msgcode;
5267 int rc;
5268
5269 msgcode = job->request->msgcode;
5270 switch (msgcode) {
5271 case FC_BSG_HST_VENDOR:
5272 rc = lpfc_bsg_hst_vendor(job);
5273 break;
5274 case FC_BSG_RPT_ELS:
5275 rc = lpfc_bsg_rport_els(job);
5276 break;
5277 case FC_BSG_RPT_CT:
5278 rc = lpfc_bsg_send_mgmt_cmd(job);
5279 break;
5280 default:
5281 rc = -EINVAL;
5282 job->reply->reply_payload_rcv_len = 0;
5283 /* make error code available to userspace */
5284 job->reply->result = rc;
5285 break;
5286 }
5287
5288 return rc;
5289 }
5290
5291 /**
5292 * lpfc_bsg_timeout - handle timeout of a bsg request from the FC transport
5293 * @job: fc_bsg_job that has timed out
5294 *
5295 * This function just aborts the job's IOCB. The aborted IOCB will return to
5296 * the waiting function which will handle passing the error back to userspace
5297 **/
5298 int
5299 lpfc_bsg_timeout(struct fc_bsg_job *job)
5300 {
5301 struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
5302 struct lpfc_hba *phba = vport->phba;
5303 struct lpfc_iocbq *cmdiocb;
5304 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
5305 struct bsg_job_data *dd_data;
5306 unsigned long flags;
5307 int rc = 0;
5308 LIST_HEAD(completions);
5309 struct lpfc_iocbq *check_iocb, *next_iocb;
5310
5311 /* if job's driver data is NULL, the command completed or is in the
5312 * the process of completing. In this case, return status to request
5313 * so the timeout is retried. This avoids double completion issues
5314 * and the request will be pulled off the timer queue when the
5315 * command's completion handler executes. Otherwise, prevent the
5316 * command's completion handler from executing the job done callback
5317 * and continue processing to abort the outstanding the command.
5318 */
5319
5320 spin_lock_irqsave(&phba->ct_ev_lock, flags);
5321 dd_data = (struct bsg_job_data *)job->dd_data;
5322 if (dd_data) {
5323 dd_data->set_job = NULL;
5324 job->dd_data = NULL;
5325 } else {
5326 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
5327 return -EAGAIN;
5328 }
5329
5330 switch (dd_data->type) {
5331 case TYPE_IOCB:
5332 /* Check to see if IOCB was issued to the port or not. If not,
5333 * remove it from the txq queue and call cancel iocbs.
5334 * Otherwise, call abort iotag
5335 */
5336 cmdiocb = dd_data->context_un.iocb.cmdiocbq;
5337 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
5338
5339 spin_lock_irqsave(&phba->hbalock, flags);
5340 /* make sure the I/O abort window is still open */
5341 if (!(cmdiocb->iocb_flag & LPFC_IO_CMD_OUTSTANDING)) {
5342 spin_unlock_irqrestore(&phba->hbalock, flags);
5343 return -EAGAIN;
5344 }
5345 list_for_each_entry_safe(check_iocb, next_iocb, &pring->txq,
5346 list) {
5347 if (check_iocb == cmdiocb) {
5348 list_move_tail(&check_iocb->list, &completions);
5349 break;
5350 }
5351 }
5352 if (list_empty(&completions))
5353 lpfc_sli_issue_abort_iotag(phba, pring, cmdiocb);
5354 spin_unlock_irqrestore(&phba->hbalock, flags);
5355 if (!list_empty(&completions)) {
5356 lpfc_sli_cancel_iocbs(phba, &completions,
5357 IOSTAT_LOCAL_REJECT,
5358 IOERR_SLI_ABORTED);
5359 }
5360 break;
5361
5362 case TYPE_EVT:
5363 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
5364 break;
5365
5366 case TYPE_MBOX:
5367 /* Update the ext buf ctx state if needed */
5368
5369 if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_PORT)
5370 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_ABTS;
5371 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
5372 break;
5373 case TYPE_MENLO:
5374 /* Check to see if IOCB was issued to the port or not. If not,
5375 * remove it from the txq queue and call cancel iocbs.
5376 * Otherwise, call abort iotag.
5377 */
5378 cmdiocb = dd_data->context_un.menlo.cmdiocbq;
5379 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
5380
5381 spin_lock_irqsave(&phba->hbalock, flags);
5382 list_for_each_entry_safe(check_iocb, next_iocb, &pring->txq,
5383 list) {
5384 if (check_iocb == cmdiocb) {
5385 list_move_tail(&check_iocb->list, &completions);
5386 break;
5387 }
5388 }
5389 if (list_empty(&completions))
5390 lpfc_sli_issue_abort_iotag(phba, pring, cmdiocb);
5391 spin_unlock_irqrestore(&phba->hbalock, flags);
5392 if (!list_empty(&completions)) {
5393 lpfc_sli_cancel_iocbs(phba, &completions,
5394 IOSTAT_LOCAL_REJECT,
5395 IOERR_SLI_ABORTED);
5396 }
5397 break;
5398 default:
5399 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
5400 break;
5401 }
5402
5403 /* scsi transport fc fc_bsg_job_timeout expects a zero return code,
5404 * otherwise an error message will be displayed on the console
5405 * so always return success (zero)
5406 */
5407 return rc;
5408 }
Linux with added FPC-III support