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mic: vop: Fix use-after-free on remove
[linux/fpc-iii.git] / drivers / scsi / lpfc / lpfc_bsg.c
blob2dc564e594302508279b41d74777cde36e51bb38
1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2017-2018 Broadcom. All Rights Reserved. The term *
5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. *
6 * Copyright (C) 2009-2015 Emulex. All rights reserved. *
7 * EMULEX and SLI are trademarks of Emulex. *
8 * www.broadcom.com *
9 * *
10 * This program is free software; you can redistribute it and/or *
11 * modify it under the terms of version 2 of the GNU General *
12 * Public License as published by the Free Software Foundation. *
13 * This program is distributed in the hope that it will be useful. *
14 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
15 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
16 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
17 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
18 * TO BE LEGALLY INVALID. See the GNU General Public License for *
19 * more details, a copy of which can be found in the file COPYING *
20 * included with this package. *
21 *******************************************************************/
22
23 #include <linux/interrupt.h>
24 #include <linux/mempool.h>
25 #include <linux/pci.h>
26 #include <linux/slab.h>
27 #include <linux/delay.h>
28 #include <linux/list.h>
29 #include <linux/bsg-lib.h>
30 #include <linux/vmalloc.h>
31
32 #include <scsi/scsi.h>
33 #include <scsi/scsi_host.h>
34 #include <scsi/scsi_transport_fc.h>
35 #include <scsi/scsi_bsg_fc.h>
36 #include <scsi/fc/fc_fs.h>
37
38 #include "lpfc_hw4.h"
39 #include "lpfc_hw.h"
40 #include "lpfc_sli.h"
41 #include "lpfc_sli4.h"
42 #include "lpfc_nl.h"
43 #include "lpfc_bsg.h"
44 #include "lpfc_disc.h"
45 #include "lpfc_scsi.h"
46 #include "lpfc.h"
47 #include "lpfc_logmsg.h"
48 #include "lpfc_crtn.h"
49 #include "lpfc_debugfs.h"
50 #include "lpfc_vport.h"
51 #include "lpfc_version.h"
52
53 struct lpfc_bsg_event {
54 struct list_head node;
55 struct kref kref;
56 wait_queue_head_t wq;
57
58 /* Event type and waiter identifiers */
59 uint32_t type_mask;
60 uint32_t req_id;
61 uint32_t reg_id;
62
63 /* next two flags are here for the auto-delete logic */
64 unsigned long wait_time_stamp;
65 int waiting;
66
67 /* seen and not seen events */
68 struct list_head events_to_get;
69 struct list_head events_to_see;
70
71 /* driver data associated with the job */
72 void *dd_data;
73 };
74
75 struct lpfc_bsg_iocb {
76 struct lpfc_iocbq *cmdiocbq;
77 struct lpfc_dmabuf *rmp;
78 struct lpfc_nodelist *ndlp;
79 };
80
81 struct lpfc_bsg_mbox {
82 LPFC_MBOXQ_t *pmboxq;
83 MAILBOX_t *mb;
84 struct lpfc_dmabuf *dmabuffers; /* for BIU diags */
85 uint8_t *ext; /* extended mailbox data */
86 uint32_t mbOffset; /* from app */
87 uint32_t inExtWLen; /* from app */
88 uint32_t outExtWLen; /* from app */
89 };
90
91 #define MENLO_DID 0x0000FC0E
92
93 struct lpfc_bsg_menlo {
94 struct lpfc_iocbq *cmdiocbq;
95 struct lpfc_dmabuf *rmp;
96 };
97
98 #define TYPE_EVT 1
99 #define TYPE_IOCB 2
100 #define TYPE_MBOX 3
101 #define TYPE_MENLO 4
102 struct bsg_job_data {
103 uint32_t type;
104 struct bsg_job *set_job; /* job waiting for this iocb to finish */
105 union {
106 struct lpfc_bsg_event *evt;
107 struct lpfc_bsg_iocb iocb;
108 struct lpfc_bsg_mbox mbox;
109 struct lpfc_bsg_menlo menlo;
110 } context_un;
111 };
112
113 struct event_data {
114 struct list_head node;
115 uint32_t type;
116 uint32_t immed_dat;
117 void *data;
118 uint32_t len;
119 };
120
121 #define BUF_SZ_4K 4096
122 #define SLI_CT_ELX_LOOPBACK 0x10
123
124 enum ELX_LOOPBACK_CMD {
125 ELX_LOOPBACK_XRI_SETUP,
126 ELX_LOOPBACK_DATA,
127 };
128
129 #define ELX_LOOPBACK_HEADER_SZ \
130 (size_t)(&((struct lpfc_sli_ct_request *)NULL)->un)
131
132 struct lpfc_dmabufext {
133 struct lpfc_dmabuf dma;
134 uint32_t size;
135 uint32_t flag;
136 };
137
138 static void
139 lpfc_free_bsg_buffers(struct lpfc_hba *phba, struct lpfc_dmabuf *mlist)
140 {
141 struct lpfc_dmabuf *mlast, *next_mlast;
142
143 if (mlist) {
144 list_for_each_entry_safe(mlast, next_mlast, &mlist->list,
145 list) {
146 lpfc_mbuf_free(phba, mlast->virt, mlast->phys);
147 list_del(&mlast->list);
148 kfree(mlast);
149 }
150 lpfc_mbuf_free(phba, mlist->virt, mlist->phys);
151 kfree(mlist);
152 }
153 return;
154 }
155
156 static struct lpfc_dmabuf *
157 lpfc_alloc_bsg_buffers(struct lpfc_hba *phba, unsigned int size,
158 int outbound_buffers, struct ulp_bde64 *bpl,
159 int *bpl_entries)
160 {
161 struct lpfc_dmabuf *mlist = NULL;
162 struct lpfc_dmabuf *mp;
163 unsigned int bytes_left = size;
164
165 /* Verify we can support the size specified */
166 if (!size || (size > (*bpl_entries * LPFC_BPL_SIZE)))
167 return NULL;
168
169 /* Determine the number of dma buffers to allocate */
170 *bpl_entries = (size % LPFC_BPL_SIZE ? size/LPFC_BPL_SIZE + 1 :
171 size/LPFC_BPL_SIZE);
172
173 /* Allocate dma buffer and place in BPL passed */
174 while (bytes_left) {
175 /* Allocate dma buffer */
176 mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
177 if (!mp) {
178 if (mlist)
179 lpfc_free_bsg_buffers(phba, mlist);
180 return NULL;
181 }
182
183 INIT_LIST_HEAD(&mp->list);
184 mp->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &(mp->phys));
185
186 if (!mp->virt) {
187 kfree(mp);
188 if (mlist)
189 lpfc_free_bsg_buffers(phba, mlist);
190 return NULL;
191 }
192
193 /* Queue it to a linked list */
194 if (!mlist)
195 mlist = mp;
196 else
197 list_add_tail(&mp->list, &mlist->list);
198
199 /* Add buffer to buffer pointer list */
200 if (outbound_buffers)
201 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
202 else
203 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
204 bpl->addrLow = le32_to_cpu(putPaddrLow(mp->phys));
205 bpl->addrHigh = le32_to_cpu(putPaddrHigh(mp->phys));
206 bpl->tus.f.bdeSize = (uint16_t)
207 (bytes_left >= LPFC_BPL_SIZE ? LPFC_BPL_SIZE :
208 bytes_left);
209 bytes_left -= bpl->tus.f.bdeSize;
210 bpl->tus.w = le32_to_cpu(bpl->tus.w);
211 bpl++;
212 }
213 return mlist;
214 }
215
216 static unsigned int
217 lpfc_bsg_copy_data(struct lpfc_dmabuf *dma_buffers,
218 struct bsg_buffer *bsg_buffers,
219 unsigned int bytes_to_transfer, int to_buffers)
220 {
221
222 struct lpfc_dmabuf *mp;
223 unsigned int transfer_bytes, bytes_copied = 0;
224 unsigned int sg_offset, dma_offset;
225 unsigned char *dma_address, *sg_address;
226 LIST_HEAD(temp_list);
227 struct sg_mapping_iter miter;
228 unsigned long flags;
229 unsigned int sg_flags = SG_MITER_ATOMIC;
230 bool sg_valid;
231
232 list_splice_init(&dma_buffers->list, &temp_list);
233 list_add(&dma_buffers->list, &temp_list);
234 sg_offset = 0;
235 if (to_buffers)
236 sg_flags |= SG_MITER_FROM_SG;
237 else
238 sg_flags |= SG_MITER_TO_SG;
239 sg_miter_start(&miter, bsg_buffers->sg_list, bsg_buffers->sg_cnt,
240 sg_flags);
241 local_irq_save(flags);
242 sg_valid = sg_miter_next(&miter);
243 list_for_each_entry(mp, &temp_list, list) {
244 dma_offset = 0;
245 while (bytes_to_transfer && sg_valid &&
246 (dma_offset < LPFC_BPL_SIZE)) {
247 dma_address = mp->virt + dma_offset;
248 if (sg_offset) {
249 /* Continue previous partial transfer of sg */
250 sg_address = miter.addr + sg_offset;
251 transfer_bytes = miter.length - sg_offset;
252 } else {
253 sg_address = miter.addr;
254 transfer_bytes = miter.length;
255 }
256 if (bytes_to_transfer < transfer_bytes)
257 transfer_bytes = bytes_to_transfer;
258 if (transfer_bytes > (LPFC_BPL_SIZE - dma_offset))
259 transfer_bytes = LPFC_BPL_SIZE - dma_offset;
260 if (to_buffers)
261 memcpy(dma_address, sg_address, transfer_bytes);
262 else
263 memcpy(sg_address, dma_address, transfer_bytes);
264 dma_offset += transfer_bytes;
265 sg_offset += transfer_bytes;
266 bytes_to_transfer -= transfer_bytes;
267 bytes_copied += transfer_bytes;
268 if (sg_offset >= miter.length) {
269 sg_offset = 0;
270 sg_valid = sg_miter_next(&miter);
271 }
272 }
273 }
274 sg_miter_stop(&miter);
275 local_irq_restore(flags);
276 list_del_init(&dma_buffers->list);
277 list_splice(&temp_list, &dma_buffers->list);
278 return bytes_copied;
279 }
280
281 /**
282 * lpfc_bsg_send_mgmt_cmd_cmp - lpfc_bsg_send_mgmt_cmd's completion handler
283 * @phba: Pointer to HBA context object.
284 * @cmdiocbq: Pointer to command iocb.
285 * @rspiocbq: Pointer to response iocb.
286 *
287 * This function is the completion handler for iocbs issued using
288 * lpfc_bsg_send_mgmt_cmd function. This function is called by the
289 * ring event handler function without any lock held. This function
290 * can be called from both worker thread context and interrupt
291 * context. This function also can be called from another thread which
292 * cleans up the SLI layer objects.
293 * This function copies the contents of the response iocb to the
294 * response iocb memory object provided by the caller of
295 * lpfc_sli_issue_iocb_wait and then wakes up the thread which
296 * sleeps for the iocb completion.
297 **/
298 static void
299 lpfc_bsg_send_mgmt_cmd_cmp(struct lpfc_hba *phba,
300 struct lpfc_iocbq *cmdiocbq,
301 struct lpfc_iocbq *rspiocbq)
302 {
303 struct bsg_job_data *dd_data;
304 struct bsg_job *job;
305 struct fc_bsg_reply *bsg_reply;
306 IOCB_t *rsp;
307 struct lpfc_dmabuf *bmp, *cmp, *rmp;
308 struct lpfc_nodelist *ndlp;
309 struct lpfc_bsg_iocb *iocb;
310 unsigned long flags;
311 unsigned int rsp_size;
312 int rc = 0;
313
314 dd_data = cmdiocbq->context1;
315
316 /* Determine if job has been aborted */
317 spin_lock_irqsave(&phba->ct_ev_lock, flags);
318 job = dd_data->set_job;
319 if (job) {
320 bsg_reply = job->reply;
321 /* Prevent timeout handling from trying to abort job */
322 job->dd_data = NULL;
323 }
324 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
325
326 /* Close the timeout handler abort window */
327 spin_lock_irqsave(&phba->hbalock, flags);
328 cmdiocbq->iocb_flag &= ~LPFC_IO_CMD_OUTSTANDING;
329 spin_unlock_irqrestore(&phba->hbalock, flags);
330
331 iocb = &dd_data->context_un.iocb;
332 ndlp = iocb->ndlp;
333 rmp = iocb->rmp;
334 cmp = cmdiocbq->context2;
335 bmp = cmdiocbq->context3;
336 rsp = &rspiocbq->iocb;
337
338 /* Copy the completed data or set the error status */
339
340 if (job) {
341 if (rsp->ulpStatus) {
342 if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
343 switch (rsp->un.ulpWord[4] & IOERR_PARAM_MASK) {
344 case IOERR_SEQUENCE_TIMEOUT:
345 rc = -ETIMEDOUT;
346 break;
347 case IOERR_INVALID_RPI:
348 rc = -EFAULT;
349 break;
350 default:
351 rc = -EACCES;
352 break;
353 }
354 } else {
355 rc = -EACCES;
356 }
357 } else {
358 rsp_size = rsp->un.genreq64.bdl.bdeSize;
359 bsg_reply->reply_payload_rcv_len =
360 lpfc_bsg_copy_data(rmp, &job->reply_payload,
361 rsp_size, 0);
362 }
363 }
364
365 lpfc_free_bsg_buffers(phba, cmp);
366 lpfc_free_bsg_buffers(phba, rmp);
367 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
368 kfree(bmp);
369 lpfc_sli_release_iocbq(phba, cmdiocbq);
370 lpfc_nlp_put(ndlp);
371 kfree(dd_data);
372
373 /* Complete the job if the job is still active */
374
375 if (job) {
376 bsg_reply->result = rc;
377 bsg_job_done(job, bsg_reply->result,
378 bsg_reply->reply_payload_rcv_len);
379 }
380 return;
381 }
382
383 /**
384 * lpfc_bsg_send_mgmt_cmd - send a CT command from a bsg request
385 * @job: fc_bsg_job to handle
386 **/
387 static int
388 lpfc_bsg_send_mgmt_cmd(struct bsg_job *job)
389 {
390 struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
391 struct lpfc_hba *phba = vport->phba;
392 struct lpfc_rport_data *rdata = fc_bsg_to_rport(job)->dd_data;
393 struct lpfc_nodelist *ndlp = rdata->pnode;
394 struct fc_bsg_reply *bsg_reply = job->reply;
395 struct ulp_bde64 *bpl = NULL;
396 uint32_t timeout;
397 struct lpfc_iocbq *cmdiocbq = NULL;
398 IOCB_t *cmd;
399 struct lpfc_dmabuf *bmp = NULL, *cmp = NULL, *rmp = NULL;
400 int request_nseg;
401 int reply_nseg;
402 struct bsg_job_data *dd_data;
403 unsigned long flags;
404 uint32_t creg_val;
405 int rc = 0;
406 int iocb_stat;
407
408 /* in case no data is transferred */
409 bsg_reply->reply_payload_rcv_len = 0;
410
411 /* allocate our bsg tracking structure */
412 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
413 if (!dd_data) {
414 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
415 "2733 Failed allocation of dd_data\n");
416 rc = -ENOMEM;
417 goto no_dd_data;
418 }
419
420 if (!lpfc_nlp_get(ndlp)) {
421 rc = -ENODEV;
422 goto no_ndlp;
423 }
424
425 if (ndlp->nlp_flag & NLP_ELS_SND_MASK) {
426 rc = -ENODEV;
427 goto free_ndlp;
428 }
429
430 cmdiocbq = lpfc_sli_get_iocbq(phba);
431 if (!cmdiocbq) {
432 rc = -ENOMEM;
433 goto free_ndlp;
434 }
435
436 cmd = &cmdiocbq->iocb;
437
438 bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
439 if (!bmp) {
440 rc = -ENOMEM;
441 goto free_cmdiocbq;
442 }
443 bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys);
444 if (!bmp->virt) {
445 rc = -ENOMEM;
446 goto free_bmp;
447 }
448
449 INIT_LIST_HEAD(&bmp->list);
450
451 bpl = (struct ulp_bde64 *) bmp->virt;
452 request_nseg = LPFC_BPL_SIZE/sizeof(struct ulp_bde64);
453 cmp = lpfc_alloc_bsg_buffers(phba, job->request_payload.payload_len,
454 1, bpl, &request_nseg);
455 if (!cmp) {
456 rc = -ENOMEM;
457 goto free_bmp;
458 }
459 lpfc_bsg_copy_data(cmp, &job->request_payload,
460 job->request_payload.payload_len, 1);
461
462 bpl += request_nseg;
463 reply_nseg = LPFC_BPL_SIZE/sizeof(struct ulp_bde64) - request_nseg;
464 rmp = lpfc_alloc_bsg_buffers(phba, job->reply_payload.payload_len, 0,
465 bpl, &reply_nseg);
466 if (!rmp) {
467 rc = -ENOMEM;
468 goto free_cmp;
469 }
470
471 cmd->un.genreq64.bdl.ulpIoTag32 = 0;
472 cmd->un.genreq64.bdl.addrHigh = putPaddrHigh(bmp->phys);
473 cmd->un.genreq64.bdl.addrLow = putPaddrLow(bmp->phys);
474 cmd->un.genreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
475 cmd->un.genreq64.bdl.bdeSize =
476 (request_nseg + reply_nseg) * sizeof(struct ulp_bde64);
477 cmd->ulpCommand = CMD_GEN_REQUEST64_CR;
478 cmd->un.genreq64.w5.hcsw.Fctl = (SI | LA);
479 cmd->un.genreq64.w5.hcsw.Dfctl = 0;
480 cmd->un.genreq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL;
481 cmd->un.genreq64.w5.hcsw.Type = FC_TYPE_CT;
482 cmd->ulpBdeCount = 1;
483 cmd->ulpLe = 1;
484 cmd->ulpClass = CLASS3;
485 cmd->ulpContext = ndlp->nlp_rpi;
486 if (phba->sli_rev == LPFC_SLI_REV4)
487 cmd->ulpContext = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
488 cmd->ulpOwner = OWN_CHIP;
489 cmdiocbq->vport = phba->pport;
490 cmdiocbq->context3 = bmp;
491 cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
492 timeout = phba->fc_ratov * 2;
493 cmd->ulpTimeout = timeout;
494
495 cmdiocbq->iocb_cmpl = lpfc_bsg_send_mgmt_cmd_cmp;
496 cmdiocbq->context1 = dd_data;
497 cmdiocbq->context2 = cmp;
498 cmdiocbq->context3 = bmp;
499 cmdiocbq->context_un.ndlp = ndlp;
500 dd_data->type = TYPE_IOCB;
501 dd_data->set_job = job;
502 dd_data->context_un.iocb.cmdiocbq = cmdiocbq;
503 dd_data->context_un.iocb.ndlp = ndlp;
504 dd_data->context_un.iocb.rmp = rmp;
505 job->dd_data = dd_data;
506
507 if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
508 if (lpfc_readl(phba->HCregaddr, &creg_val)) {
509 rc = -EIO ;
510 goto free_rmp;
511 }
512 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
513 writel(creg_val, phba->HCregaddr);
514 readl(phba->HCregaddr); /* flush */
515 }
516
517 iocb_stat = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0);
518
519 if (iocb_stat == IOCB_SUCCESS) {
520 spin_lock_irqsave(&phba->hbalock, flags);
521 /* make sure the I/O had not been completed yet */
522 if (cmdiocbq->iocb_flag & LPFC_IO_LIBDFC) {
523 /* open up abort window to timeout handler */
524 cmdiocbq->iocb_flag |= LPFC_IO_CMD_OUTSTANDING;
525 }
526 spin_unlock_irqrestore(&phba->hbalock, flags);
527 return 0; /* done for now */
528 } else if (iocb_stat == IOCB_BUSY) {
529 rc = -EAGAIN;
530 } else {
531 rc = -EIO;
532 }
533
534 /* iocb failed so cleanup */
535 job->dd_data = NULL;
536
537 free_rmp:
538 lpfc_free_bsg_buffers(phba, rmp);
539 free_cmp:
540 lpfc_free_bsg_buffers(phba, cmp);
541 free_bmp:
542 if (bmp->virt)
543 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
544 kfree(bmp);
545 free_cmdiocbq:
546 lpfc_sli_release_iocbq(phba, cmdiocbq);
547 free_ndlp:
548 lpfc_nlp_put(ndlp);
549 no_ndlp:
550 kfree(dd_data);
551 no_dd_data:
552 /* make error code available to userspace */
553 bsg_reply->result = rc;
554 job->dd_data = NULL;
555 return rc;
556 }
557
558 /**
559 * lpfc_bsg_rport_els_cmp - lpfc_bsg_rport_els's completion handler
560 * @phba: Pointer to HBA context object.
561 * @cmdiocbq: Pointer to command iocb.
562 * @rspiocbq: Pointer to response iocb.
563 *
564 * This function is the completion handler for iocbs issued using
565 * lpfc_bsg_rport_els_cmp function. This function is called by the
566 * ring event handler function without any lock held. This function
567 * can be called from both worker thread context and interrupt
568 * context. This function also can be called from other thread which
569 * cleans up the SLI layer objects.
570 * This function copies the contents of the response iocb to the
571 * response iocb memory object provided by the caller of
572 * lpfc_sli_issue_iocb_wait and then wakes up the thread which
573 * sleeps for the iocb completion.
574 **/
575 static void
576 lpfc_bsg_rport_els_cmp(struct lpfc_hba *phba,
577 struct lpfc_iocbq *cmdiocbq,
578 struct lpfc_iocbq *rspiocbq)
579 {
580 struct bsg_job_data *dd_data;
581 struct bsg_job *job;
582 struct fc_bsg_reply *bsg_reply;
583 IOCB_t *rsp;
584 struct lpfc_nodelist *ndlp;
585 struct lpfc_dmabuf *pcmd = NULL, *prsp = NULL;
586 struct fc_bsg_ctels_reply *els_reply;
587 uint8_t *rjt_data;
588 unsigned long flags;
589 unsigned int rsp_size;
590 int rc = 0;
591
592 dd_data = cmdiocbq->context1;
593 ndlp = dd_data->context_un.iocb.ndlp;
594 cmdiocbq->context1 = ndlp;
595
596 /* Determine if job has been aborted */
597 spin_lock_irqsave(&phba->ct_ev_lock, flags);
598 job = dd_data->set_job;
599 if (job) {
600 bsg_reply = job->reply;
601 /* Prevent timeout handling from trying to abort job */
602 job->dd_data = NULL;
603 }
604 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
605
606 /* Close the timeout handler abort window */
607 spin_lock_irqsave(&phba->hbalock, flags);
608 cmdiocbq->iocb_flag &= ~LPFC_IO_CMD_OUTSTANDING;
609 spin_unlock_irqrestore(&phba->hbalock, flags);
610
611 rsp = &rspiocbq->iocb;
612 pcmd = (struct lpfc_dmabuf *)cmdiocbq->context2;
613 prsp = (struct lpfc_dmabuf *)pcmd->list.next;
614
615 /* Copy the completed job data or determine the job status if job is
616 * still active
617 */
618
619 if (job) {
620 if (rsp->ulpStatus == IOSTAT_SUCCESS) {
621 rsp_size = rsp->un.elsreq64.bdl.bdeSize;
622 bsg_reply->reply_payload_rcv_len =
623 sg_copy_from_buffer(job->reply_payload.sg_list,
624 job->reply_payload.sg_cnt,
625 prsp->virt,
626 rsp_size);
627 } else if (rsp->ulpStatus == IOSTAT_LS_RJT) {
628 bsg_reply->reply_payload_rcv_len =
629 sizeof(struct fc_bsg_ctels_reply);
630 /* LS_RJT data returned in word 4 */
631 rjt_data = (uint8_t *)&rsp->un.ulpWord[4];
632 els_reply = &bsg_reply->reply_data.ctels_reply;
633 els_reply->status = FC_CTELS_STATUS_REJECT;
634 els_reply->rjt_data.action = rjt_data[3];
635 els_reply->rjt_data.reason_code = rjt_data[2];
636 els_reply->rjt_data.reason_explanation = rjt_data[1];
637 els_reply->rjt_data.vendor_unique = rjt_data[0];
638 } else {
639 rc = -EIO;
640 }
641 }
642
643 lpfc_nlp_put(ndlp);
644 lpfc_els_free_iocb(phba, cmdiocbq);
645 kfree(dd_data);
646
647 /* Complete the job if the job is still active */
648
649 if (job) {
650 bsg_reply->result = rc;
651 bsg_job_done(job, bsg_reply->result,
652 bsg_reply->reply_payload_rcv_len);
653 }
654 return;
655 }
656
657 /**
658 * lpfc_bsg_rport_els - send an ELS command from a bsg request
659 * @job: fc_bsg_job to handle
660 **/
661 static int
662 lpfc_bsg_rport_els(struct bsg_job *job)
663 {
664 struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
665 struct lpfc_hba *phba = vport->phba;
666 struct lpfc_rport_data *rdata = fc_bsg_to_rport(job)->dd_data;
667 struct lpfc_nodelist *ndlp = rdata->pnode;
668 struct fc_bsg_request *bsg_request = job->request;
669 struct fc_bsg_reply *bsg_reply = job->reply;
670 uint32_t elscmd;
671 uint32_t cmdsize;
672 struct lpfc_iocbq *cmdiocbq;
673 uint16_t rpi = 0;
674 struct bsg_job_data *dd_data;
675 unsigned long flags;
676 uint32_t creg_val;
677 int rc = 0;
678
679 /* in case no data is transferred */
680 bsg_reply->reply_payload_rcv_len = 0;
681
682 /* verify the els command is not greater than the
683 * maximum ELS transfer size.
684 */
685
686 if (job->request_payload.payload_len > FCELSSIZE) {
687 rc = -EINVAL;
688 goto no_dd_data;
689 }
690
691 /* allocate our bsg tracking structure */
692 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
693 if (!dd_data) {
694 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
695 "2735 Failed allocation of dd_data\n");
696 rc = -ENOMEM;
697 goto no_dd_data;
698 }
699
700 elscmd = bsg_request->rqst_data.r_els.els_code;
701 cmdsize = job->request_payload.payload_len;
702
703 if (!lpfc_nlp_get(ndlp)) {
704 rc = -ENODEV;
705 goto free_dd_data;
706 }
707
708 /* We will use the allocated dma buffers by prep els iocb for command
709 * and response to ensure if the job times out and the request is freed,
710 * we won't be dma into memory that is no longer allocated to for the
711 * request.
712 */
713
714 cmdiocbq = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp,
715 ndlp->nlp_DID, elscmd);
716 if (!cmdiocbq) {
717 rc = -EIO;
718 goto release_ndlp;
719 }
720
721 rpi = ndlp->nlp_rpi;
722
723 /* Transfer the request payload to allocated command dma buffer */
724
725 sg_copy_to_buffer(job->request_payload.sg_list,
726 job->request_payload.sg_cnt,
727 ((struct lpfc_dmabuf *)cmdiocbq->context2)->virt,
728 cmdsize);
729
730 if (phba->sli_rev == LPFC_SLI_REV4)
731 cmdiocbq->iocb.ulpContext = phba->sli4_hba.rpi_ids[rpi];
732 else
733 cmdiocbq->iocb.ulpContext = rpi;
734 cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
735 cmdiocbq->context1 = dd_data;
736 cmdiocbq->context_un.ndlp = ndlp;
737 cmdiocbq->iocb_cmpl = lpfc_bsg_rport_els_cmp;
738 dd_data->type = TYPE_IOCB;
739 dd_data->set_job = job;
740 dd_data->context_un.iocb.cmdiocbq = cmdiocbq;
741 dd_data->context_un.iocb.ndlp = ndlp;
742 dd_data->context_un.iocb.rmp = NULL;
743 job->dd_data = dd_data;
744
745 if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
746 if (lpfc_readl(phba->HCregaddr, &creg_val)) {
747 rc = -EIO;
748 goto linkdown_err;
749 }
750 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
751 writel(creg_val, phba->HCregaddr);
752 readl(phba->HCregaddr); /* flush */
753 }
754
755 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0);
756
757 if (rc == IOCB_SUCCESS) {
758 spin_lock_irqsave(&phba->hbalock, flags);
759 /* make sure the I/O had not been completed/released */
760 if (cmdiocbq->iocb_flag & LPFC_IO_LIBDFC) {
761 /* open up abort window to timeout handler */
762 cmdiocbq->iocb_flag |= LPFC_IO_CMD_OUTSTANDING;
763 }
764 spin_unlock_irqrestore(&phba->hbalock, flags);
765 return 0; /* done for now */
766 } else if (rc == IOCB_BUSY) {
767 rc = -EAGAIN;
768 } else {
769 rc = -EIO;
770 }
771
772 /* iocb failed so cleanup */
773 job->dd_data = NULL;
774
775 linkdown_err:
776 cmdiocbq->context1 = ndlp;
777 lpfc_els_free_iocb(phba, cmdiocbq);
778
779 release_ndlp:
780 lpfc_nlp_put(ndlp);
781
782 free_dd_data:
783 kfree(dd_data);
784
785 no_dd_data:
786 /* make error code available to userspace */
787 bsg_reply->result = rc;
788 job->dd_data = NULL;
789 return rc;
790 }
791
792 /**
793 * lpfc_bsg_event_free - frees an allocated event structure
794 * @kref: Pointer to a kref.
795 *
796 * Called from kref_put. Back cast the kref into an event structure address.
797 * Free any events to get, delete associated nodes, free any events to see,
798 * free any data then free the event itself.
799 **/
800 static void
801 lpfc_bsg_event_free(struct kref *kref)
802 {
803 struct lpfc_bsg_event *evt = container_of(kref, struct lpfc_bsg_event,
804 kref);
805 struct event_data *ed;
806
807 list_del(&evt->node);
808
809 while (!list_empty(&evt->events_to_get)) {
810 ed = list_entry(evt->events_to_get.next, typeof(*ed), node);
811 list_del(&ed->node);
812 kfree(ed->data);
813 kfree(ed);
814 }
815
816 while (!list_empty(&evt->events_to_see)) {
817 ed = list_entry(evt->events_to_see.next, typeof(*ed), node);
818 list_del(&ed->node);
819 kfree(ed->data);
820 kfree(ed);
821 }
822
823 kfree(evt->dd_data);
824 kfree(evt);
825 }
826
827 /**
828 * lpfc_bsg_event_ref - increments the kref for an event
829 * @evt: Pointer to an event structure.
830 **/
831 static inline void
832 lpfc_bsg_event_ref(struct lpfc_bsg_event *evt)
833 {
834 kref_get(&evt->kref);
835 }
836
837 /**
838 * lpfc_bsg_event_unref - Uses kref_put to free an event structure
839 * @evt: Pointer to an event structure.
840 **/
841 static inline void
842 lpfc_bsg_event_unref(struct lpfc_bsg_event *evt)
843 {
844 kref_put(&evt->kref, lpfc_bsg_event_free);
845 }
846
847 /**
848 * lpfc_bsg_event_new - allocate and initialize a event structure
849 * @ev_mask: Mask of events.
850 * @ev_reg_id: Event reg id.
851 * @ev_req_id: Event request id.
852 **/
853 static struct lpfc_bsg_event *
854 lpfc_bsg_event_new(uint32_t ev_mask, int ev_reg_id, uint32_t ev_req_id)
855 {
856 struct lpfc_bsg_event *evt = kzalloc(sizeof(*evt), GFP_KERNEL);
857
858 if (!evt)
859 return NULL;
860
861 INIT_LIST_HEAD(&evt->events_to_get);
862 INIT_LIST_HEAD(&evt->events_to_see);
863 evt->type_mask = ev_mask;
864 evt->req_id = ev_req_id;
865 evt->reg_id = ev_reg_id;
866 evt->wait_time_stamp = jiffies;
867 evt->dd_data = NULL;
868 init_waitqueue_head(&evt->wq);
869 kref_init(&evt->kref);
870 return evt;
871 }
872
873 /**
874 * diag_cmd_data_free - Frees an lpfc dma buffer extension
875 * @phba: Pointer to HBA context object.
876 * @mlist: Pointer to an lpfc dma buffer extension.
877 **/
878 static int
879 diag_cmd_data_free(struct lpfc_hba *phba, struct lpfc_dmabufext *mlist)
880 {
881 struct lpfc_dmabufext *mlast;
882 struct pci_dev *pcidev;
883 struct list_head head, *curr, *next;
884
885 if ((!mlist) || (!lpfc_is_link_up(phba) &&
886 (phba->link_flag & LS_LOOPBACK_MODE))) {
887 return 0;
888 }
889
890 pcidev = phba->pcidev;
891 list_add_tail(&head, &mlist->dma.list);
892
893 list_for_each_safe(curr, next, &head) {
894 mlast = list_entry(curr, struct lpfc_dmabufext , dma.list);
895 if (mlast->dma.virt)
896 dma_free_coherent(&pcidev->dev,
897 mlast->size,
898 mlast->dma.virt,
899 mlast->dma.phys);
900 kfree(mlast);
901 }
902 return 0;
903 }
904
905 /**
906 * lpfc_bsg_ct_unsol_event - process an unsolicited CT command
907 * @phba:
908 * @pring:
909 * @piocbq:
910 *
911 * This function is called when an unsolicited CT command is received. It
912 * forwards the event to any processes registered to receive CT events.
913 **/
914 int
915 lpfc_bsg_ct_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
916 struct lpfc_iocbq *piocbq)
917 {
918 uint32_t evt_req_id = 0;
919 uint32_t cmd;
920 struct lpfc_dmabuf *dmabuf = NULL;
921 struct lpfc_bsg_event *evt;
922 struct event_data *evt_dat = NULL;
923 struct lpfc_iocbq *iocbq;
924 size_t offset = 0;
925 struct list_head head;
926 struct ulp_bde64 *bde;
927 dma_addr_t dma_addr;
928 int i;
929 struct lpfc_dmabuf *bdeBuf1 = piocbq->context2;
930 struct lpfc_dmabuf *bdeBuf2 = piocbq->context3;
931 struct lpfc_hbq_entry *hbqe;
932 struct lpfc_sli_ct_request *ct_req;
933 struct bsg_job *job = NULL;
934 struct fc_bsg_reply *bsg_reply;
935 struct bsg_job_data *dd_data = NULL;
936 unsigned long flags;
937 int size = 0;
938
939 INIT_LIST_HEAD(&head);
940 list_add_tail(&head, &piocbq->list);
941
942 if (piocbq->iocb.ulpBdeCount == 0 ||
943 piocbq->iocb.un.cont64[0].tus.f.bdeSize == 0)
944 goto error_ct_unsol_exit;
945
946 if (phba->link_state == LPFC_HBA_ERROR ||
947 (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE)))
948 goto error_ct_unsol_exit;
949
950 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)
951 dmabuf = bdeBuf1;
952 else {
953 dma_addr = getPaddr(piocbq->iocb.un.cont64[0].addrHigh,
954 piocbq->iocb.un.cont64[0].addrLow);
955 dmabuf = lpfc_sli_ringpostbuf_get(phba, pring, dma_addr);
956 }
957 if (dmabuf == NULL)
958 goto error_ct_unsol_exit;
959 ct_req = (struct lpfc_sli_ct_request *)dmabuf->virt;
960 evt_req_id = ct_req->FsType;
961 cmd = ct_req->CommandResponse.bits.CmdRsp;
962 if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED))
963 lpfc_sli_ringpostbuf_put(phba, pring, dmabuf);
964
965 spin_lock_irqsave(&phba->ct_ev_lock, flags);
966 list_for_each_entry(evt, &phba->ct_ev_waiters, node) {
967 if (!(evt->type_mask & FC_REG_CT_EVENT) ||
968 evt->req_id != evt_req_id)
969 continue;
970
971 lpfc_bsg_event_ref(evt);
972 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
973 evt_dat = kzalloc(sizeof(*evt_dat), GFP_KERNEL);
974 if (evt_dat == NULL) {
975 spin_lock_irqsave(&phba->ct_ev_lock, flags);
976 lpfc_bsg_event_unref(evt);
977 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
978 "2614 Memory allocation failed for "
979 "CT event\n");
980 break;
981 }
982
983 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
984 /* take accumulated byte count from the last iocbq */
985 iocbq = list_entry(head.prev, typeof(*iocbq), list);
986 evt_dat->len = iocbq->iocb.unsli3.rcvsli3.acc_len;
987 } else {
988 list_for_each_entry(iocbq, &head, list) {
989 for (i = 0; i < iocbq->iocb.ulpBdeCount; i++)
990 evt_dat->len +=
991 iocbq->iocb.un.cont64[i].tus.f.bdeSize;
992 }
993 }
994
995 evt_dat->data = kzalloc(evt_dat->len, GFP_KERNEL);
996 if (evt_dat->data == NULL) {
997 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
998 "2615 Memory allocation failed for "
999 "CT event data, size %d\n",
1000 evt_dat->len);
1001 kfree(evt_dat);
1002 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1003 lpfc_bsg_event_unref(evt);
1004 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1005 goto error_ct_unsol_exit;
1006 }
1007
1008 list_for_each_entry(iocbq, &head, list) {
1009 size = 0;
1010 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
1011 bdeBuf1 = iocbq->context2;
1012 bdeBuf2 = iocbq->context3;
1013 }
1014 for (i = 0; i < iocbq->iocb.ulpBdeCount; i++) {
1015 if (phba->sli3_options &
1016 LPFC_SLI3_HBQ_ENABLED) {
1017 if (i == 0) {
1018 hbqe = (struct lpfc_hbq_entry *)
1019 &iocbq->iocb.un.ulpWord[0];
1020 size = hbqe->bde.tus.f.bdeSize;
1021 dmabuf = bdeBuf1;
1022 } else if (i == 1) {
1023 hbqe = (struct lpfc_hbq_entry *)
1024 &iocbq->iocb.unsli3.
1025 sli3Words[4];
1026 size = hbqe->bde.tus.f.bdeSize;
1027 dmabuf = bdeBuf2;
1028 }
1029 if ((offset + size) > evt_dat->len)
1030 size = evt_dat->len - offset;
1031 } else {
1032 size = iocbq->iocb.un.cont64[i].
1033 tus.f.bdeSize;
1034 bde = &iocbq->iocb.un.cont64[i];
1035 dma_addr = getPaddr(bde->addrHigh,
1036 bde->addrLow);
1037 dmabuf = lpfc_sli_ringpostbuf_get(phba,
1038 pring, dma_addr);
1039 }
1040 if (!dmabuf) {
1041 lpfc_printf_log(phba, KERN_ERR,
1042 LOG_LIBDFC, "2616 No dmabuf "
1043 "found for iocbq 0x%p\n",
1044 iocbq);
1045 kfree(evt_dat->data);
1046 kfree(evt_dat);
1047 spin_lock_irqsave(&phba->ct_ev_lock,
1048 flags);
1049 lpfc_bsg_event_unref(evt);
1050 spin_unlock_irqrestore(
1051 &phba->ct_ev_lock, flags);
1052 goto error_ct_unsol_exit;
1053 }
1054 memcpy((char *)(evt_dat->data) + offset,
1055 dmabuf->virt, size);
1056 offset += size;
1057 if (evt_req_id != SLI_CT_ELX_LOOPBACK &&
1058 !(phba->sli3_options &
1059 LPFC_SLI3_HBQ_ENABLED)) {
1060 lpfc_sli_ringpostbuf_put(phba, pring,
1061 dmabuf);
1062 } else {
1063 switch (cmd) {
1064 case ELX_LOOPBACK_DATA:
1065 if (phba->sli_rev <
1066 LPFC_SLI_REV4)
1067 diag_cmd_data_free(phba,
1068 (struct lpfc_dmabufext
1069 *)dmabuf);
1070 break;
1071 case ELX_LOOPBACK_XRI_SETUP:
1072 if ((phba->sli_rev ==
1073 LPFC_SLI_REV2) ||
1074 (phba->sli3_options &
1075 LPFC_SLI3_HBQ_ENABLED
1076 )) {
1077 lpfc_in_buf_free(phba,
1078 dmabuf);
1079 } else {
1080 lpfc_post_buffer(phba,
1081 pring,
1082 1);
1083 }
1084 break;
1085 default:
1086 if (!(phba->sli3_options &
1087 LPFC_SLI3_HBQ_ENABLED))
1088 lpfc_post_buffer(phba,
1089 pring,
1090 1);
1091 break;
1092 }
1093 }
1094 }
1095 }
1096
1097 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1098 if (phba->sli_rev == LPFC_SLI_REV4) {
1099 evt_dat->immed_dat = phba->ctx_idx;
1100 phba->ctx_idx = (phba->ctx_idx + 1) % LPFC_CT_CTX_MAX;
1101 /* Provide warning for over-run of the ct_ctx array */
1102 if (phba->ct_ctx[evt_dat->immed_dat].valid ==
1103 UNSOL_VALID)
1104 lpfc_printf_log(phba, KERN_WARNING, LOG_ELS,
1105 "2717 CT context array entry "
1106 "[%d] over-run: oxid:x%x, "
1107 "sid:x%x\n", phba->ctx_idx,
1108 phba->ct_ctx[
1109 evt_dat->immed_dat].oxid,
1110 phba->ct_ctx[
1111 evt_dat->immed_dat].SID);
1112 phba->ct_ctx[evt_dat->immed_dat].rxid =
1113 piocbq->iocb.ulpContext;
1114 phba->ct_ctx[evt_dat->immed_dat].oxid =
1115 piocbq->iocb.unsli3.rcvsli3.ox_id;
1116 phba->ct_ctx[evt_dat->immed_dat].SID =
1117 piocbq->iocb.un.rcvels.remoteID;
1118 phba->ct_ctx[evt_dat->immed_dat].valid = UNSOL_VALID;
1119 } else
1120 evt_dat->immed_dat = piocbq->iocb.ulpContext;
1121
1122 evt_dat->type = FC_REG_CT_EVENT;
1123 list_add(&evt_dat->node, &evt->events_to_see);
1124 if (evt_req_id == SLI_CT_ELX_LOOPBACK) {
1125 wake_up_interruptible(&evt->wq);
1126 lpfc_bsg_event_unref(evt);
1127 break;
1128 }
1129
1130 list_move(evt->events_to_see.prev, &evt->events_to_get);
1131
1132 dd_data = (struct bsg_job_data *)evt->dd_data;
1133 job = dd_data->set_job;
1134 dd_data->set_job = NULL;
1135 lpfc_bsg_event_unref(evt);
1136 if (job) {
1137 bsg_reply = job->reply;
1138 bsg_reply->reply_payload_rcv_len = size;
1139 /* make error code available to userspace */
1140 bsg_reply->result = 0;
1141 job->dd_data = NULL;
1142 /* complete the job back to userspace */
1143 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1144 bsg_job_done(job, bsg_reply->result,
1145 bsg_reply->reply_payload_rcv_len);
1146 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1147 }
1148 }
1149 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1150
1151 error_ct_unsol_exit:
1152 if (!list_empty(&head))
1153 list_del(&head);
1154 if ((phba->sli_rev < LPFC_SLI_REV4) &&
1155 (evt_req_id == SLI_CT_ELX_LOOPBACK))
1156 return 0;
1157 return 1;
1158 }
1159
1160 /**
1161 * lpfc_bsg_ct_unsol_abort - handler ct abort to management plane
1162 * @phba: Pointer to HBA context object.
1163 * @dmabuf: pointer to a dmabuf that describes the FC sequence
1164 *
1165 * This function handles abort to the CT command toward management plane
1166 * for SLI4 port.
1167 *
1168 * If the pending context of a CT command to management plane present, clears
1169 * such context and returns 1 for handled; otherwise, it returns 0 indicating
1170 * no context exists.
1171 **/
1172 int
1173 lpfc_bsg_ct_unsol_abort(struct lpfc_hba *phba, struct hbq_dmabuf *dmabuf)
1174 {
1175 struct fc_frame_header fc_hdr;
1176 struct fc_frame_header *fc_hdr_ptr = &fc_hdr;
1177 int ctx_idx, handled = 0;
1178 uint16_t oxid, rxid;
1179 uint32_t sid;
1180
1181 memcpy(fc_hdr_ptr, dmabuf->hbuf.virt, sizeof(struct fc_frame_header));
1182 sid = sli4_sid_from_fc_hdr(fc_hdr_ptr);
1183 oxid = be16_to_cpu(fc_hdr_ptr->fh_ox_id);
1184 rxid = be16_to_cpu(fc_hdr_ptr->fh_rx_id);
1185
1186 for (ctx_idx = 0; ctx_idx < LPFC_CT_CTX_MAX; ctx_idx++) {
1187 if (phba->ct_ctx[ctx_idx].valid != UNSOL_VALID)
1188 continue;
1189 if (phba->ct_ctx[ctx_idx].rxid != rxid)
1190 continue;
1191 if (phba->ct_ctx[ctx_idx].oxid != oxid)
1192 continue;
1193 if (phba->ct_ctx[ctx_idx].SID != sid)
1194 continue;
1195 phba->ct_ctx[ctx_idx].valid = UNSOL_INVALID;
1196 handled = 1;
1197 }
1198 return handled;
1199 }
1200
1201 /**
1202 * lpfc_bsg_hba_set_event - process a SET_EVENT bsg vendor command
1203 * @job: SET_EVENT fc_bsg_job
1204 **/
1205 static int
1206 lpfc_bsg_hba_set_event(struct bsg_job *job)
1207 {
1208 struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
1209 struct lpfc_hba *phba = vport->phba;
1210 struct fc_bsg_request *bsg_request = job->request;
1211 struct set_ct_event *event_req;
1212 struct lpfc_bsg_event *evt;
1213 int rc = 0;
1214 struct bsg_job_data *dd_data = NULL;
1215 uint32_t ev_mask;
1216 unsigned long flags;
1217
1218 if (job->request_len <
1219 sizeof(struct fc_bsg_request) + sizeof(struct set_ct_event)) {
1220 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1221 "2612 Received SET_CT_EVENT below minimum "
1222 "size\n");
1223 rc = -EINVAL;
1224 goto job_error;
1225 }
1226
1227 event_req = (struct set_ct_event *)
1228 bsg_request->rqst_data.h_vendor.vendor_cmd;
1229 ev_mask = ((uint32_t)(unsigned long)event_req->type_mask &
1230 FC_REG_EVENT_MASK);
1231 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1232 list_for_each_entry(evt, &phba->ct_ev_waiters, node) {
1233 if (evt->reg_id == event_req->ev_reg_id) {
1234 lpfc_bsg_event_ref(evt);
1235 evt->wait_time_stamp = jiffies;
1236 dd_data = (struct bsg_job_data *)evt->dd_data;
1237 break;
1238 }
1239 }
1240 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1241
1242 if (&evt->node == &phba->ct_ev_waiters) {
1243 /* no event waiting struct yet - first call */
1244 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
1245 if (dd_data == NULL) {
1246 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1247 "2734 Failed allocation of dd_data\n");
1248 rc = -ENOMEM;
1249 goto job_error;
1250 }
1251 evt = lpfc_bsg_event_new(ev_mask, event_req->ev_reg_id,
1252 event_req->ev_req_id);
1253 if (!evt) {
1254 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1255 "2617 Failed allocation of event "
1256 "waiter\n");
1257 rc = -ENOMEM;
1258 goto job_error;
1259 }
1260 dd_data->type = TYPE_EVT;
1261 dd_data->set_job = NULL;
1262 dd_data->context_un.evt = evt;
1263 evt->dd_data = (void *)dd_data;
1264 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1265 list_add(&evt->node, &phba->ct_ev_waiters);
1266 lpfc_bsg_event_ref(evt);
1267 evt->wait_time_stamp = jiffies;
1268 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1269 }
1270
1271 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1272 evt->waiting = 1;
1273 dd_data->set_job = job; /* for unsolicited command */
1274 job->dd_data = dd_data; /* for fc transport timeout callback*/
1275 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1276 return 0; /* call job done later */
1277
1278 job_error:
1279 if (dd_data != NULL)
1280 kfree(dd_data);
1281
1282 job->dd_data = NULL;
1283 return rc;
1284 }
1285
1286 /**
1287 * lpfc_bsg_hba_get_event - process a GET_EVENT bsg vendor command
1288 * @job: GET_EVENT fc_bsg_job
1289 **/
1290 static int
1291 lpfc_bsg_hba_get_event(struct bsg_job *job)
1292 {
1293 struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
1294 struct lpfc_hba *phba = vport->phba;
1295 struct fc_bsg_request *bsg_request = job->request;
1296 struct fc_bsg_reply *bsg_reply = job->reply;
1297 struct get_ct_event *event_req;
1298 struct get_ct_event_reply *event_reply;
1299 struct lpfc_bsg_event *evt, *evt_next;
1300 struct event_data *evt_dat = NULL;
1301 unsigned long flags;
1302 uint32_t rc = 0;
1303
1304 if (job->request_len <
1305 sizeof(struct fc_bsg_request) + sizeof(struct get_ct_event)) {
1306 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1307 "2613 Received GET_CT_EVENT request below "
1308 "minimum size\n");
1309 rc = -EINVAL;
1310 goto job_error;
1311 }
1312
1313 event_req = (struct get_ct_event *)
1314 bsg_request->rqst_data.h_vendor.vendor_cmd;
1315
1316 event_reply = (struct get_ct_event_reply *)
1317 bsg_reply->reply_data.vendor_reply.vendor_rsp;
1318 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1319 list_for_each_entry_safe(evt, evt_next, &phba->ct_ev_waiters, node) {
1320 if (evt->reg_id == event_req->ev_reg_id) {
1321 if (list_empty(&evt->events_to_get))
1322 break;
1323 lpfc_bsg_event_ref(evt);
1324 evt->wait_time_stamp = jiffies;
1325 evt_dat = list_entry(evt->events_to_get.prev,
1326 struct event_data, node);
1327 list_del(&evt_dat->node);
1328 break;
1329 }
1330 }
1331 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1332
1333 /* The app may continue to ask for event data until it gets
1334 * an error indicating that there isn't anymore
1335 */
1336 if (evt_dat == NULL) {
1337 bsg_reply->reply_payload_rcv_len = 0;
1338 rc = -ENOENT;
1339 goto job_error;
1340 }
1341
1342 if (evt_dat->len > job->request_payload.payload_len) {
1343 evt_dat->len = job->request_payload.payload_len;
1344 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1345 "2618 Truncated event data at %d "
1346 "bytes\n",
1347 job->request_payload.payload_len);
1348 }
1349
1350 event_reply->type = evt_dat->type;
1351 event_reply->immed_data = evt_dat->immed_dat;
1352 if (evt_dat->len > 0)
1353 bsg_reply->reply_payload_rcv_len =
1354 sg_copy_from_buffer(job->request_payload.sg_list,
1355 job->request_payload.sg_cnt,
1356 evt_dat->data, evt_dat->len);
1357 else
1358 bsg_reply->reply_payload_rcv_len = 0;
1359
1360 if (evt_dat) {
1361 kfree(evt_dat->data);
1362 kfree(evt_dat);
1363 }
1364
1365 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1366 lpfc_bsg_event_unref(evt);
1367 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1368 job->dd_data = NULL;
1369 bsg_reply->result = 0;
1370 bsg_job_done(job, bsg_reply->result,
1371 bsg_reply->reply_payload_rcv_len);
1372 return 0;
1373
1374 job_error:
1375 job->dd_data = NULL;
1376 bsg_reply->result = rc;
1377 return rc;
1378 }
1379
1380 /**
1381 * lpfc_issue_ct_rsp_cmp - lpfc_issue_ct_rsp's completion handler
1382 * @phba: Pointer to HBA context object.
1383 * @cmdiocbq: Pointer to command iocb.
1384 * @rspiocbq: Pointer to response iocb.
1385 *
1386 * This function is the completion handler for iocbs issued using
1387 * lpfc_issue_ct_rsp_cmp function. This function is called by the
1388 * ring event handler function without any lock held. This function
1389 * can be called from both worker thread context and interrupt
1390 * context. This function also can be called from other thread which
1391 * cleans up the SLI layer objects.
1392 * This function copy the contents of the response iocb to the
1393 * response iocb memory object provided by the caller of
1394 * lpfc_sli_issue_iocb_wait and then wakes up the thread which
1395 * sleeps for the iocb completion.
1396 **/
1397 static void
1398 lpfc_issue_ct_rsp_cmp(struct lpfc_hba *phba,
1399 struct lpfc_iocbq *cmdiocbq,
1400 struct lpfc_iocbq *rspiocbq)
1401 {
1402 struct bsg_job_data *dd_data;
1403 struct bsg_job *job;
1404 struct fc_bsg_reply *bsg_reply;
1405 IOCB_t *rsp;
1406 struct lpfc_dmabuf *bmp, *cmp;
1407 struct lpfc_nodelist *ndlp;
1408 unsigned long flags;
1409 int rc = 0;
1410
1411 dd_data = cmdiocbq->context1;
1412
1413 /* Determine if job has been aborted */
1414 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1415 job = dd_data->set_job;
1416 if (job) {
1417 /* Prevent timeout handling from trying to abort job */
1418 job->dd_data = NULL;
1419 }
1420 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1421
1422 /* Close the timeout handler abort window */
1423 spin_lock_irqsave(&phba->hbalock, flags);
1424 cmdiocbq->iocb_flag &= ~LPFC_IO_CMD_OUTSTANDING;
1425 spin_unlock_irqrestore(&phba->hbalock, flags);
1426
1427 ndlp = dd_data->context_un.iocb.ndlp;
1428 cmp = cmdiocbq->context2;
1429 bmp = cmdiocbq->context3;
1430 rsp = &rspiocbq->iocb;
1431
1432 /* Copy the completed job data or set the error status */
1433
1434 if (job) {
1435 bsg_reply = job->reply;
1436 if (rsp->ulpStatus) {
1437 if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
1438 switch (rsp->un.ulpWord[4] & IOERR_PARAM_MASK) {
1439 case IOERR_SEQUENCE_TIMEOUT:
1440 rc = -ETIMEDOUT;
1441 break;
1442 case IOERR_INVALID_RPI:
1443 rc = -EFAULT;
1444 break;
1445 default:
1446 rc = -EACCES;
1447 break;
1448 }
1449 } else {
1450 rc = -EACCES;
1451 }
1452 } else {
1453 bsg_reply->reply_payload_rcv_len = 0;
1454 }
1455 }
1456
1457 lpfc_free_bsg_buffers(phba, cmp);
1458 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
1459 kfree(bmp);
1460 lpfc_sli_release_iocbq(phba, cmdiocbq);
1461 lpfc_nlp_put(ndlp);
1462 kfree(dd_data);
1463
1464 /* Complete the job if the job is still active */
1465
1466 if (job) {
1467 bsg_reply->result = rc;
1468 bsg_job_done(job, bsg_reply->result,
1469 bsg_reply->reply_payload_rcv_len);
1470 }
1471 return;
1472 }
1473
1474 /**
1475 * lpfc_issue_ct_rsp - issue a ct response
1476 * @phba: Pointer to HBA context object.
1477 * @job: Pointer to the job object.
1478 * @tag: tag index value into the ports context exchange array.
1479 * @bmp: Pointer to a dma buffer descriptor.
1480 * @num_entry: Number of enties in the bde.
1481 **/
1482 static int
1483 lpfc_issue_ct_rsp(struct lpfc_hba *phba, struct bsg_job *job, uint32_t tag,
1484 struct lpfc_dmabuf *cmp, struct lpfc_dmabuf *bmp,
1485 int num_entry)
1486 {
1487 IOCB_t *icmd;
1488 struct lpfc_iocbq *ctiocb = NULL;
1489 int rc = 0;
1490 struct lpfc_nodelist *ndlp = NULL;
1491 struct bsg_job_data *dd_data;
1492 unsigned long flags;
1493 uint32_t creg_val;
1494
1495 /* allocate our bsg tracking structure */
1496 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
1497 if (!dd_data) {
1498 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1499 "2736 Failed allocation of dd_data\n");
1500 rc = -ENOMEM;
1501 goto no_dd_data;
1502 }
1503
1504 /* Allocate buffer for command iocb */
1505 ctiocb = lpfc_sli_get_iocbq(phba);
1506 if (!ctiocb) {
1507 rc = -ENOMEM;
1508 goto no_ctiocb;
1509 }
1510
1511 icmd = &ctiocb->iocb;
1512 icmd->un.xseq64.bdl.ulpIoTag32 = 0;
1513 icmd->un.xseq64.bdl.addrHigh = putPaddrHigh(bmp->phys);
1514 icmd->un.xseq64.bdl.addrLow = putPaddrLow(bmp->phys);
1515 icmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
1516 icmd->un.xseq64.bdl.bdeSize = (num_entry * sizeof(struct ulp_bde64));
1517 icmd->un.xseq64.w5.hcsw.Fctl = (LS | LA);
1518 icmd->un.xseq64.w5.hcsw.Dfctl = 0;
1519 icmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_SOL_CTL;
1520 icmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT;
1521
1522 /* Fill in rest of iocb */
1523 icmd->ulpCommand = CMD_XMIT_SEQUENCE64_CX;
1524 icmd->ulpBdeCount = 1;
1525 icmd->ulpLe = 1;
1526 icmd->ulpClass = CLASS3;
1527 if (phba->sli_rev == LPFC_SLI_REV4) {
1528 /* Do not issue unsol response if oxid not marked as valid */
1529 if (phba->ct_ctx[tag].valid != UNSOL_VALID) {
1530 rc = IOCB_ERROR;
1531 goto issue_ct_rsp_exit;
1532 }
1533 icmd->ulpContext = phba->ct_ctx[tag].rxid;
1534 icmd->unsli3.rcvsli3.ox_id = phba->ct_ctx[tag].oxid;
1535 ndlp = lpfc_findnode_did(phba->pport, phba->ct_ctx[tag].SID);
1536 if (!ndlp) {
1537 lpfc_printf_log(phba, KERN_WARNING, LOG_ELS,
1538 "2721 ndlp null for oxid %x SID %x\n",
1539 icmd->ulpContext,
1540 phba->ct_ctx[tag].SID);
1541 rc = IOCB_ERROR;
1542 goto issue_ct_rsp_exit;
1543 }
1544
1545 /* Check if the ndlp is active */
1546 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
1547 rc = IOCB_ERROR;
1548 goto issue_ct_rsp_exit;
1549 }
1550
1551 /* get a refernece count so the ndlp doesn't go away while
1552 * we respond
1553 */
1554 if (!lpfc_nlp_get(ndlp)) {
1555 rc = IOCB_ERROR;
1556 goto issue_ct_rsp_exit;
1557 }
1558
1559 icmd->un.ulpWord[3] =
1560 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
1561
1562 /* The exchange is done, mark the entry as invalid */
1563 phba->ct_ctx[tag].valid = UNSOL_INVALID;
1564 } else
1565 icmd->ulpContext = (ushort) tag;
1566
1567 icmd->ulpTimeout = phba->fc_ratov * 2;
1568
1569 /* Xmit CT response on exchange <xid> */
1570 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1571 "2722 Xmit CT response on exchange x%x Data: x%x x%x x%x\n",
1572 icmd->ulpContext, icmd->ulpIoTag, tag, phba->link_state);
1573
1574 ctiocb->iocb_cmpl = NULL;
1575 ctiocb->iocb_flag |= LPFC_IO_LIBDFC;
1576 ctiocb->vport = phba->pport;
1577 ctiocb->context1 = dd_data;
1578 ctiocb->context2 = cmp;
1579 ctiocb->context3 = bmp;
1580 ctiocb->context_un.ndlp = ndlp;
1581 ctiocb->iocb_cmpl = lpfc_issue_ct_rsp_cmp;
1582
1583 dd_data->type = TYPE_IOCB;
1584 dd_data->set_job = job;
1585 dd_data->context_un.iocb.cmdiocbq = ctiocb;
1586 dd_data->context_un.iocb.ndlp = ndlp;
1587 dd_data->context_un.iocb.rmp = NULL;
1588 job->dd_data = dd_data;
1589
1590 if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
1591 if (lpfc_readl(phba->HCregaddr, &creg_val)) {
1592 rc = -IOCB_ERROR;
1593 goto issue_ct_rsp_exit;
1594 }
1595 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
1596 writel(creg_val, phba->HCregaddr);
1597 readl(phba->HCregaddr); /* flush */
1598 }
1599
1600 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, ctiocb, 0);
1601
1602 if (rc == IOCB_SUCCESS) {
1603 spin_lock_irqsave(&phba->hbalock, flags);
1604 /* make sure the I/O had not been completed/released */
1605 if (ctiocb->iocb_flag & LPFC_IO_LIBDFC) {
1606 /* open up abort window to timeout handler */
1607 ctiocb->iocb_flag |= LPFC_IO_CMD_OUTSTANDING;
1608 }
1609 spin_unlock_irqrestore(&phba->hbalock, flags);
1610 return 0; /* done for now */
1611 }
1612
1613 /* iocb failed so cleanup */
1614 job->dd_data = NULL;
1615
1616 issue_ct_rsp_exit:
1617 lpfc_sli_release_iocbq(phba, ctiocb);
1618 no_ctiocb:
1619 kfree(dd_data);
1620 no_dd_data:
1621 return rc;
1622 }
1623
1624 /**
1625 * lpfc_bsg_send_mgmt_rsp - process a SEND_MGMT_RESP bsg vendor command
1626 * @job: SEND_MGMT_RESP fc_bsg_job
1627 **/
1628 static int
1629 lpfc_bsg_send_mgmt_rsp(struct bsg_job *job)
1630 {
1631 struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
1632 struct lpfc_hba *phba = vport->phba;
1633 struct fc_bsg_request *bsg_request = job->request;
1634 struct fc_bsg_reply *bsg_reply = job->reply;
1635 struct send_mgmt_resp *mgmt_resp = (struct send_mgmt_resp *)
1636 bsg_request->rqst_data.h_vendor.vendor_cmd;
1637 struct ulp_bde64 *bpl;
1638 struct lpfc_dmabuf *bmp = NULL, *cmp = NULL;
1639 int bpl_entries;
1640 uint32_t tag = mgmt_resp->tag;
1641 unsigned long reqbfrcnt =
1642 (unsigned long)job->request_payload.payload_len;
1643 int rc = 0;
1644
1645 /* in case no data is transferred */
1646 bsg_reply->reply_payload_rcv_len = 0;
1647
1648 if (!reqbfrcnt || (reqbfrcnt > (80 * BUF_SZ_4K))) {
1649 rc = -ERANGE;
1650 goto send_mgmt_rsp_exit;
1651 }
1652
1653 bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
1654 if (!bmp) {
1655 rc = -ENOMEM;
1656 goto send_mgmt_rsp_exit;
1657 }
1658
1659 bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys);
1660 if (!bmp->virt) {
1661 rc = -ENOMEM;
1662 goto send_mgmt_rsp_free_bmp;
1663 }
1664
1665 INIT_LIST_HEAD(&bmp->list);
1666 bpl = (struct ulp_bde64 *) bmp->virt;
1667 bpl_entries = (LPFC_BPL_SIZE/sizeof(struct ulp_bde64));
1668 cmp = lpfc_alloc_bsg_buffers(phba, job->request_payload.payload_len,
1669 1, bpl, &bpl_entries);
1670 if (!cmp) {
1671 rc = -ENOMEM;
1672 goto send_mgmt_rsp_free_bmp;
1673 }
1674 lpfc_bsg_copy_data(cmp, &job->request_payload,
1675 job->request_payload.payload_len, 1);
1676
1677 rc = lpfc_issue_ct_rsp(phba, job, tag, cmp, bmp, bpl_entries);
1678
1679 if (rc == IOCB_SUCCESS)
1680 return 0; /* done for now */
1681
1682 rc = -EACCES;
1683
1684 lpfc_free_bsg_buffers(phba, cmp);
1685
1686 send_mgmt_rsp_free_bmp:
1687 if (bmp->virt)
1688 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
1689 kfree(bmp);
1690 send_mgmt_rsp_exit:
1691 /* make error code available to userspace */
1692 bsg_reply->result = rc;
1693 job->dd_data = NULL;
1694 return rc;
1695 }
1696
1697 /**
1698 * lpfc_bsg_diag_mode_enter - process preparing into device diag loopback mode
1699 * @phba: Pointer to HBA context object.
1700 *
1701 * This function is responsible for preparing driver for diag loopback
1702 * on device.
1703 */
1704 static int
1705 lpfc_bsg_diag_mode_enter(struct lpfc_hba *phba)
1706 {
1707 struct lpfc_vport **vports;
1708 struct Scsi_Host *shost;
1709 struct lpfc_sli *psli;
1710 struct lpfc_queue *qp = NULL;
1711 struct lpfc_sli_ring *pring;
1712 int i = 0;
1713
1714 psli = &phba->sli;
1715 if (!psli)
1716 return -ENODEV;
1717
1718
1719 if ((phba->link_state == LPFC_HBA_ERROR) ||
1720 (psli->sli_flag & LPFC_BLOCK_MGMT_IO) ||
1721 (!(psli->sli_flag & LPFC_SLI_ACTIVE)))
1722 return -EACCES;
1723
1724 vports = lpfc_create_vport_work_array(phba);
1725 if (vports) {
1726 for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
1727 shost = lpfc_shost_from_vport(vports[i]);
1728 scsi_block_requests(shost);
1729 }
1730 lpfc_destroy_vport_work_array(phba, vports);
1731 } else {
1732 shost = lpfc_shost_from_vport(phba->pport);
1733 scsi_block_requests(shost);
1734 }
1735
1736 if (phba->sli_rev != LPFC_SLI_REV4) {
1737 pring = &psli->sli3_ring[LPFC_FCP_RING];
1738 lpfc_emptyq_wait(phba, &pring->txcmplq, &phba->hbalock);
1739 return 0;
1740 }
1741 list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
1742 pring = qp->pring;
1743 if (!pring || (pring->ringno != LPFC_FCP_RING))
1744 continue;
1745 if (!lpfc_emptyq_wait(phba, &pring->txcmplq,
1746 &pring->ring_lock))
1747 break;
1748 }
1749 return 0;
1750 }
1751
1752 /**
1753 * lpfc_bsg_diag_mode_exit - exit process from device diag loopback mode
1754 * @phba: Pointer to HBA context object.
1755 *
1756 * This function is responsible for driver exit processing of setting up
1757 * diag loopback mode on device.
1758 */
1759 static void
1760 lpfc_bsg_diag_mode_exit(struct lpfc_hba *phba)
1761 {
1762 struct Scsi_Host *shost;
1763 struct lpfc_vport **vports;
1764 int i;
1765
1766 vports = lpfc_create_vport_work_array(phba);
1767 if (vports) {
1768 for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
1769 shost = lpfc_shost_from_vport(vports[i]);
1770 scsi_unblock_requests(shost);
1771 }
1772 lpfc_destroy_vport_work_array(phba, vports);
1773 } else {
1774 shost = lpfc_shost_from_vport(phba->pport);
1775 scsi_unblock_requests(shost);
1776 }
1777 return;
1778 }
1779
1780 /**
1781 * lpfc_sli3_bsg_diag_loopback_mode - process an sli3 bsg vendor command
1782 * @phba: Pointer to HBA context object.
1783 * @job: LPFC_BSG_VENDOR_DIAG_MODE
1784 *
1785 * This function is responsible for placing an sli3 port into diagnostic
1786 * loopback mode in order to perform a diagnostic loopback test.
1787 * All new scsi requests are blocked, a small delay is used to allow the
1788 * scsi requests to complete then the link is brought down. If the link is
1789 * is placed in loopback mode then scsi requests are again allowed
1790 * so the scsi mid-layer doesn't give up on the port.
1791 * All of this is done in-line.
1792 */
1793 static int
1794 lpfc_sli3_bsg_diag_loopback_mode(struct lpfc_hba *phba, struct bsg_job *job)
1795 {
1796 struct fc_bsg_request *bsg_request = job->request;
1797 struct fc_bsg_reply *bsg_reply = job->reply;
1798 struct diag_mode_set *loopback_mode;
1799 uint32_t link_flags;
1800 uint32_t timeout;
1801 LPFC_MBOXQ_t *pmboxq = NULL;
1802 int mbxstatus = MBX_SUCCESS;
1803 int i = 0;
1804 int rc = 0;
1805
1806 /* no data to return just the return code */
1807 bsg_reply->reply_payload_rcv_len = 0;
1808
1809 if (job->request_len < sizeof(struct fc_bsg_request) +
1810 sizeof(struct diag_mode_set)) {
1811 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1812 "2738 Received DIAG MODE request size:%d "
1813 "below the minimum size:%d\n",
1814 job->request_len,
1815 (int)(sizeof(struct fc_bsg_request) +
1816 sizeof(struct diag_mode_set)));
1817 rc = -EINVAL;
1818 goto job_error;
1819 }
1820
1821 rc = lpfc_bsg_diag_mode_enter(phba);
1822 if (rc)
1823 goto job_error;
1824
1825 /* bring the link to diagnostic mode */
1826 loopback_mode = (struct diag_mode_set *)
1827 bsg_request->rqst_data.h_vendor.vendor_cmd;
1828 link_flags = loopback_mode->type;
1829 timeout = loopback_mode->timeout * 100;
1830
1831 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1832 if (!pmboxq) {
1833 rc = -ENOMEM;
1834 goto loopback_mode_exit;
1835 }
1836 memset((void *)pmboxq, 0, sizeof(LPFC_MBOXQ_t));
1837 pmboxq->u.mb.mbxCommand = MBX_DOWN_LINK;
1838 pmboxq->u.mb.mbxOwner = OWN_HOST;
1839
1840 mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO);
1841
1842 if ((mbxstatus == MBX_SUCCESS) && (pmboxq->u.mb.mbxStatus == 0)) {
1843 /* wait for link down before proceeding */
1844 i = 0;
1845 while (phba->link_state != LPFC_LINK_DOWN) {
1846 if (i++ > timeout) {
1847 rc = -ETIMEDOUT;
1848 goto loopback_mode_exit;
1849 }
1850 msleep(10);
1851 }
1852
1853 memset((void *)pmboxq, 0, sizeof(LPFC_MBOXQ_t));
1854 if (link_flags == INTERNAL_LOOP_BACK)
1855 pmboxq->u.mb.un.varInitLnk.link_flags = FLAGS_LOCAL_LB;
1856 else
1857 pmboxq->u.mb.un.varInitLnk.link_flags =
1858 FLAGS_TOPOLOGY_MODE_LOOP;
1859
1860 pmboxq->u.mb.mbxCommand = MBX_INIT_LINK;
1861 pmboxq->u.mb.mbxOwner = OWN_HOST;
1862
1863 mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq,
1864 LPFC_MBOX_TMO);
1865
1866 if ((mbxstatus != MBX_SUCCESS) || (pmboxq->u.mb.mbxStatus))
1867 rc = -ENODEV;
1868 else {
1869 spin_lock_irq(&phba->hbalock);
1870 phba->link_flag |= LS_LOOPBACK_MODE;
1871 spin_unlock_irq(&phba->hbalock);
1872 /* wait for the link attention interrupt */
1873 msleep(100);
1874
1875 i = 0;
1876 while (phba->link_state != LPFC_HBA_READY) {
1877 if (i++ > timeout) {
1878 rc = -ETIMEDOUT;
1879 break;
1880 }
1881
1882 msleep(10);
1883 }
1884 }
1885
1886 } else
1887 rc = -ENODEV;
1888
1889 loopback_mode_exit:
1890 lpfc_bsg_diag_mode_exit(phba);
1891
1892 /*
1893 * Let SLI layer release mboxq if mbox command completed after timeout.
1894 */
1895 if (pmboxq && mbxstatus != MBX_TIMEOUT)
1896 mempool_free(pmboxq, phba->mbox_mem_pool);
1897
1898 job_error:
1899 /* make error code available to userspace */
1900 bsg_reply->result = rc;
1901 /* complete the job back to userspace if no error */
1902 if (rc == 0)
1903 bsg_job_done(job, bsg_reply->result,
1904 bsg_reply->reply_payload_rcv_len);
1905 return rc;
1906 }
1907
1908 /**
1909 * lpfc_sli4_bsg_set_link_diag_state - set sli4 link diag state
1910 * @phba: Pointer to HBA context object.
1911 * @diag: Flag for set link to diag or nomral operation state.
1912 *
1913 * This function is responsible for issuing a sli4 mailbox command for setting
1914 * link to either diag state or normal operation state.
1915 */
1916 static int
1917 lpfc_sli4_bsg_set_link_diag_state(struct lpfc_hba *phba, uint32_t diag)
1918 {
1919 LPFC_MBOXQ_t *pmboxq;
1920 struct lpfc_mbx_set_link_diag_state *link_diag_state;
1921 uint32_t req_len, alloc_len;
1922 int mbxstatus = MBX_SUCCESS, rc;
1923
1924 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1925 if (!pmboxq)
1926 return -ENOMEM;
1927
1928 req_len = (sizeof(struct lpfc_mbx_set_link_diag_state) -
1929 sizeof(struct lpfc_sli4_cfg_mhdr));
1930 alloc_len = lpfc_sli4_config(phba, pmboxq, LPFC_MBOX_SUBSYSTEM_FCOE,
1931 LPFC_MBOX_OPCODE_FCOE_LINK_DIAG_STATE,
1932 req_len, LPFC_SLI4_MBX_EMBED);
1933 if (alloc_len != req_len) {
1934 rc = -ENOMEM;
1935 goto link_diag_state_set_out;
1936 }
1937 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
1938 "3128 Set link to diagnostic state:x%x (x%x/x%x)\n",
1939 diag, phba->sli4_hba.lnk_info.lnk_tp,
1940 phba->sli4_hba.lnk_info.lnk_no);
1941
1942 link_diag_state = &pmboxq->u.mqe.un.link_diag_state;
1943 bf_set(lpfc_mbx_set_diag_state_diag_bit_valid, &link_diag_state->u.req,
1944 LPFC_DIAG_STATE_DIAG_BIT_VALID_CHANGE);
1945 bf_set(lpfc_mbx_set_diag_state_link_num, &link_diag_state->u.req,
1946 phba->sli4_hba.lnk_info.lnk_no);
1947 bf_set(lpfc_mbx_set_diag_state_link_type, &link_diag_state->u.req,
1948 phba->sli4_hba.lnk_info.lnk_tp);
1949 if (diag)
1950 bf_set(lpfc_mbx_set_diag_state_diag,
1951 &link_diag_state->u.req, 1);
1952 else
1953 bf_set(lpfc_mbx_set_diag_state_diag,
1954 &link_diag_state->u.req, 0);
1955
1956 mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO);
1957
1958 if ((mbxstatus == MBX_SUCCESS) && (pmboxq->u.mb.mbxStatus == 0))
1959 rc = 0;
1960 else
1961 rc = -ENODEV;
1962
1963 link_diag_state_set_out:
1964 if (pmboxq && (mbxstatus != MBX_TIMEOUT))
1965 mempool_free(pmboxq, phba->mbox_mem_pool);
1966
1967 return rc;
1968 }
1969
1970 /**
1971 * lpfc_sli4_bsg_set_internal_loopback - set sli4 internal loopback diagnostic
1972 * @phba: Pointer to HBA context object.
1973 *
1974 * This function is responsible for issuing a sli4 mailbox command for setting
1975 * up internal loopback diagnostic.
1976 */
1977 static int
1978 lpfc_sli4_bsg_set_internal_loopback(struct lpfc_hba *phba)
1979 {
1980 LPFC_MBOXQ_t *pmboxq;
1981 uint32_t req_len, alloc_len;
1982 struct lpfc_mbx_set_link_diag_loopback *link_diag_loopback;
1983 int mbxstatus = MBX_SUCCESS, rc = 0;
1984
1985 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1986 if (!pmboxq)
1987 return -ENOMEM;
1988 req_len = (sizeof(struct lpfc_mbx_set_link_diag_loopback) -
1989 sizeof(struct lpfc_sli4_cfg_mhdr));
1990 alloc_len = lpfc_sli4_config(phba, pmboxq, LPFC_MBOX_SUBSYSTEM_FCOE,
1991 LPFC_MBOX_OPCODE_FCOE_LINK_DIAG_LOOPBACK,
1992 req_len, LPFC_SLI4_MBX_EMBED);
1993 if (alloc_len != req_len) {
1994 mempool_free(pmboxq, phba->mbox_mem_pool);
1995 return -ENOMEM;
1996 }
1997 link_diag_loopback = &pmboxq->u.mqe.un.link_diag_loopback;
1998 bf_set(lpfc_mbx_set_diag_state_link_num,
1999 &link_diag_loopback->u.req, phba->sli4_hba.lnk_info.lnk_no);
2000 bf_set(lpfc_mbx_set_diag_state_link_type,
2001 &link_diag_loopback->u.req, phba->sli4_hba.lnk_info.lnk_tp);
2002 bf_set(lpfc_mbx_set_diag_lpbk_type, &link_diag_loopback->u.req,
2003 LPFC_DIAG_LOOPBACK_TYPE_INTERNAL);
2004
2005 mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO);
2006 if ((mbxstatus != MBX_SUCCESS) || (pmboxq->u.mb.mbxStatus)) {
2007 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2008 "3127 Failed setup loopback mode mailbox "
2009 "command, rc:x%x, status:x%x\n", mbxstatus,
2010 pmboxq->u.mb.mbxStatus);
2011 rc = -ENODEV;
2012 }
2013 if (pmboxq && (mbxstatus != MBX_TIMEOUT))
2014 mempool_free(pmboxq, phba->mbox_mem_pool);
2015 return rc;
2016 }
2017
2018 /**
2019 * lpfc_sli4_diag_fcport_reg_setup - setup port registrations for diagnostic
2020 * @phba: Pointer to HBA context object.
2021 *
2022 * This function set up SLI4 FC port registrations for diagnostic run, which
2023 * includes all the rpis, vfi, and also vpi.
2024 */
2025 static int
2026 lpfc_sli4_diag_fcport_reg_setup(struct lpfc_hba *phba)
2027 {
2028 int rc;
2029
2030 if (phba->pport->fc_flag & FC_VFI_REGISTERED) {
2031 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2032 "3136 Port still had vfi registered: "
2033 "mydid:x%x, fcfi:%d, vfi:%d, vpi:%d\n",
2034 phba->pport->fc_myDID, phba->fcf.fcfi,
2035 phba->sli4_hba.vfi_ids[phba->pport->vfi],
2036 phba->vpi_ids[phba->pport->vpi]);
2037 return -EINVAL;
2038 }
2039 rc = lpfc_issue_reg_vfi(phba->pport);
2040 return rc;
2041 }
2042
2043 /**
2044 * lpfc_sli4_bsg_diag_loopback_mode - process an sli4 bsg vendor command
2045 * @phba: Pointer to HBA context object.
2046 * @job: LPFC_BSG_VENDOR_DIAG_MODE
2047 *
2048 * This function is responsible for placing an sli4 port into diagnostic
2049 * loopback mode in order to perform a diagnostic loopback test.
2050 */
2051 static int
2052 lpfc_sli4_bsg_diag_loopback_mode(struct lpfc_hba *phba, struct bsg_job *job)
2053 {
2054 struct fc_bsg_request *bsg_request = job->request;
2055 struct fc_bsg_reply *bsg_reply = job->reply;
2056 struct diag_mode_set *loopback_mode;
2057 uint32_t link_flags, timeout;
2058 int i, rc = 0;
2059
2060 /* no data to return just the return code */
2061 bsg_reply->reply_payload_rcv_len = 0;
2062
2063 if (job->request_len < sizeof(struct fc_bsg_request) +
2064 sizeof(struct diag_mode_set)) {
2065 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2066 "3011 Received DIAG MODE request size:%d "
2067 "below the minimum size:%d\n",
2068 job->request_len,
2069 (int)(sizeof(struct fc_bsg_request) +
2070 sizeof(struct diag_mode_set)));
2071 rc = -EINVAL;
2072 goto job_error;
2073 }
2074
2075 rc = lpfc_bsg_diag_mode_enter(phba);
2076 if (rc)
2077 goto job_error;
2078
2079 /* indicate we are in loobpack diagnostic mode */
2080 spin_lock_irq(&phba->hbalock);
2081 phba->link_flag |= LS_LOOPBACK_MODE;
2082 spin_unlock_irq(&phba->hbalock);
2083
2084 /* reset port to start frome scratch */
2085 rc = lpfc_selective_reset(phba);
2086 if (rc)
2087 goto job_error;
2088
2089 /* bring the link to diagnostic mode */
2090 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
2091 "3129 Bring link to diagnostic state.\n");
2092 loopback_mode = (struct diag_mode_set *)
2093 bsg_request->rqst_data.h_vendor.vendor_cmd;
2094 link_flags = loopback_mode->type;
2095 timeout = loopback_mode->timeout * 100;
2096
2097 rc = lpfc_sli4_bsg_set_link_diag_state(phba, 1);
2098 if (rc) {
2099 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2100 "3130 Failed to bring link to diagnostic "
2101 "state, rc:x%x\n", rc);
2102 goto loopback_mode_exit;
2103 }
2104
2105 /* wait for link down before proceeding */
2106 i = 0;
2107 while (phba->link_state != LPFC_LINK_DOWN) {
2108 if (i++ > timeout) {
2109 rc = -ETIMEDOUT;
2110 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
2111 "3131 Timeout waiting for link to "
2112 "diagnostic mode, timeout:%d ms\n",
2113 timeout * 10);
2114 goto loopback_mode_exit;
2115 }
2116 msleep(10);
2117 }
2118
2119 /* set up loopback mode */
2120 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
2121 "3132 Set up loopback mode:x%x\n", link_flags);
2122
2123 if (link_flags == INTERNAL_LOOP_BACK)
2124 rc = lpfc_sli4_bsg_set_internal_loopback(phba);
2125 else if (link_flags == EXTERNAL_LOOP_BACK)
2126 rc = lpfc_hba_init_link_fc_topology(phba,
2127 FLAGS_TOPOLOGY_MODE_PT_PT,
2128 MBX_NOWAIT);
2129 else {
2130 rc = -EINVAL;
2131 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
2132 "3141 Loopback mode:x%x not supported\n",
2133 link_flags);
2134 goto loopback_mode_exit;
2135 }
2136
2137 if (!rc) {
2138 /* wait for the link attention interrupt */
2139 msleep(100);
2140 i = 0;
2141 while (phba->link_state < LPFC_LINK_UP) {
2142 if (i++ > timeout) {
2143 rc = -ETIMEDOUT;
2144 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
2145 "3137 Timeout waiting for link up "
2146 "in loopback mode, timeout:%d ms\n",
2147 timeout * 10);
2148 break;
2149 }
2150 msleep(10);
2151 }
2152 }
2153
2154 /* port resource registration setup for loopback diagnostic */
2155 if (!rc) {
2156 /* set up a none zero myDID for loopback test */
2157 phba->pport->fc_myDID = 1;
2158 rc = lpfc_sli4_diag_fcport_reg_setup(phba);
2159 } else
2160 goto loopback_mode_exit;
2161
2162 if (!rc) {
2163 /* wait for the port ready */
2164 msleep(100);
2165 i = 0;
2166 while (phba->link_state != LPFC_HBA_READY) {
2167 if (i++ > timeout) {
2168 rc = -ETIMEDOUT;
2169 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
2170 "3133 Timeout waiting for port "
2171 "loopback mode ready, timeout:%d ms\n",
2172 timeout * 10);
2173 break;
2174 }
2175 msleep(10);
2176 }
2177 }
2178
2179 loopback_mode_exit:
2180 /* clear loopback diagnostic mode */
2181 if (rc) {
2182 spin_lock_irq(&phba->hbalock);
2183 phba->link_flag &= ~LS_LOOPBACK_MODE;
2184 spin_unlock_irq(&phba->hbalock);
2185 }
2186 lpfc_bsg_diag_mode_exit(phba);
2187
2188 job_error:
2189 /* make error code available to userspace */
2190 bsg_reply->result = rc;
2191 /* complete the job back to userspace if no error */
2192 if (rc == 0)
2193 bsg_job_done(job, bsg_reply->result,
2194 bsg_reply->reply_payload_rcv_len);
2195 return rc;
2196 }
2197
2198 /**
2199 * lpfc_bsg_diag_loopback_mode - bsg vendor command for diag loopback mode
2200 * @job: LPFC_BSG_VENDOR_DIAG_MODE
2201 *
2202 * This function is responsible for responding to check and dispatch bsg diag
2203 * command from the user to proper driver action routines.
2204 */
2205 static int
2206 lpfc_bsg_diag_loopback_mode(struct bsg_job *job)
2207 {
2208 struct Scsi_Host *shost;
2209 struct lpfc_vport *vport;
2210 struct lpfc_hba *phba;
2211 int rc;
2212
2213 shost = fc_bsg_to_shost(job);
2214 if (!shost)
2215 return -ENODEV;
2216 vport = shost_priv(shost);
2217 if (!vport)
2218 return -ENODEV;
2219 phba = vport->phba;
2220 if (!phba)
2221 return -ENODEV;
2222
2223 if (phba->sli_rev < LPFC_SLI_REV4)
2224 rc = lpfc_sli3_bsg_diag_loopback_mode(phba, job);
2225 else if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
2226 LPFC_SLI_INTF_IF_TYPE_2)
2227 rc = lpfc_sli4_bsg_diag_loopback_mode(phba, job);
2228 else
2229 rc = -ENODEV;
2230
2231 return rc;
2232 }
2233
2234 /**
2235 * lpfc_sli4_bsg_diag_mode_end - sli4 bsg vendor command for ending diag mode
2236 * @job: LPFC_BSG_VENDOR_DIAG_MODE_END
2237 *
2238 * This function is responsible for responding to check and dispatch bsg diag
2239 * command from the user to proper driver action routines.
2240 */
2241 static int
2242 lpfc_sli4_bsg_diag_mode_end(struct bsg_job *job)
2243 {
2244 struct fc_bsg_request *bsg_request = job->request;
2245 struct fc_bsg_reply *bsg_reply = job->reply;
2246 struct Scsi_Host *shost;
2247 struct lpfc_vport *vport;
2248 struct lpfc_hba *phba;
2249 struct diag_mode_set *loopback_mode_end_cmd;
2250 uint32_t timeout;
2251 int rc, i;
2252
2253 shost = fc_bsg_to_shost(job);
2254 if (!shost)
2255 return -ENODEV;
2256 vport = shost_priv(shost);
2257 if (!vport)
2258 return -ENODEV;
2259 phba = vport->phba;
2260 if (!phba)
2261 return -ENODEV;
2262
2263 if (phba->sli_rev < LPFC_SLI_REV4)
2264 return -ENODEV;
2265 if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
2266 LPFC_SLI_INTF_IF_TYPE_2)
2267 return -ENODEV;
2268
2269 /* clear loopback diagnostic mode */
2270 spin_lock_irq(&phba->hbalock);
2271 phba->link_flag &= ~LS_LOOPBACK_MODE;
2272 spin_unlock_irq(&phba->hbalock);
2273 loopback_mode_end_cmd = (struct diag_mode_set *)
2274 bsg_request->rqst_data.h_vendor.vendor_cmd;
2275 timeout = loopback_mode_end_cmd->timeout * 100;
2276
2277 rc = lpfc_sli4_bsg_set_link_diag_state(phba, 0);
2278 if (rc) {
2279 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2280 "3139 Failed to bring link to diagnostic "
2281 "state, rc:x%x\n", rc);
2282 goto loopback_mode_end_exit;
2283 }
2284
2285 /* wait for link down before proceeding */
2286 i = 0;
2287 while (phba->link_state != LPFC_LINK_DOWN) {
2288 if (i++ > timeout) {
2289 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
2290 "3140 Timeout waiting for link to "
2291 "diagnostic mode_end, timeout:%d ms\n",
2292 timeout * 10);
2293 /* there is nothing much we can do here */
2294 break;
2295 }
2296 msleep(10);
2297 }
2298
2299 /* reset port resource registrations */
2300 rc = lpfc_selective_reset(phba);
2301 phba->pport->fc_myDID = 0;
2302
2303 loopback_mode_end_exit:
2304 /* make return code available to userspace */
2305 bsg_reply->result = rc;
2306 /* complete the job back to userspace if no error */
2307 if (rc == 0)
2308 bsg_job_done(job, bsg_reply->result,
2309 bsg_reply->reply_payload_rcv_len);
2310 return rc;
2311 }
2312
2313 /**
2314 * lpfc_sli4_bsg_link_diag_test - sli4 bsg vendor command for diag link test
2315 * @job: LPFC_BSG_VENDOR_DIAG_LINK_TEST
2316 *
2317 * This function is to perform SLI4 diag link test request from the user
2318 * applicaiton.
2319 */
2320 static int
2321 lpfc_sli4_bsg_link_diag_test(struct bsg_job *job)
2322 {
2323 struct fc_bsg_request *bsg_request = job->request;
2324 struct fc_bsg_reply *bsg_reply = job->reply;
2325 struct Scsi_Host *shost;
2326 struct lpfc_vport *vport;
2327 struct lpfc_hba *phba;
2328 LPFC_MBOXQ_t *pmboxq;
2329 struct sli4_link_diag *link_diag_test_cmd;
2330 uint32_t req_len, alloc_len;
2331 struct lpfc_mbx_run_link_diag_test *run_link_diag_test;
2332 union lpfc_sli4_cfg_shdr *shdr;
2333 uint32_t shdr_status, shdr_add_status;
2334 struct diag_status *diag_status_reply;
2335 int mbxstatus, rc = 0;
2336
2337 shost = fc_bsg_to_shost(job);
2338 if (!shost) {
2339 rc = -ENODEV;
2340 goto job_error;
2341 }
2342 vport = shost_priv(shost);
2343 if (!vport) {
2344 rc = -ENODEV;
2345 goto job_error;
2346 }
2347 phba = vport->phba;
2348 if (!phba) {
2349 rc = -ENODEV;
2350 goto job_error;
2351 }
2352
2353 if (phba->sli_rev < LPFC_SLI_REV4) {
2354 rc = -ENODEV;
2355 goto job_error;
2356 }
2357 if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
2358 LPFC_SLI_INTF_IF_TYPE_2) {
2359 rc = -ENODEV;
2360 goto job_error;
2361 }
2362
2363 if (job->request_len < sizeof(struct fc_bsg_request) +
2364 sizeof(struct sli4_link_diag)) {
2365 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2366 "3013 Received LINK DIAG TEST request "
2367 " size:%d below the minimum size:%d\n",
2368 job->request_len,
2369 (int)(sizeof(struct fc_bsg_request) +
2370 sizeof(struct sli4_link_diag)));
2371 rc = -EINVAL;
2372 goto job_error;
2373 }
2374
2375 rc = lpfc_bsg_diag_mode_enter(phba);
2376 if (rc)
2377 goto job_error;
2378
2379 link_diag_test_cmd = (struct sli4_link_diag *)
2380 bsg_request->rqst_data.h_vendor.vendor_cmd;
2381
2382 rc = lpfc_sli4_bsg_set_link_diag_state(phba, 1);
2383
2384 if (rc)
2385 goto job_error;
2386
2387 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2388 if (!pmboxq)
2389 goto link_diag_test_exit;
2390
2391 req_len = (sizeof(struct lpfc_mbx_set_link_diag_state) -
2392 sizeof(struct lpfc_sli4_cfg_mhdr));
2393 alloc_len = lpfc_sli4_config(phba, pmboxq, LPFC_MBOX_SUBSYSTEM_FCOE,
2394 LPFC_MBOX_OPCODE_FCOE_LINK_DIAG_STATE,
2395 req_len, LPFC_SLI4_MBX_EMBED);
2396 if (alloc_len != req_len)
2397 goto link_diag_test_exit;
2398
2399 run_link_diag_test = &pmboxq->u.mqe.un.link_diag_test;
2400 bf_set(lpfc_mbx_run_diag_test_link_num, &run_link_diag_test->u.req,
2401 phba->sli4_hba.lnk_info.lnk_no);
2402 bf_set(lpfc_mbx_run_diag_test_link_type, &run_link_diag_test->u.req,
2403 phba->sli4_hba.lnk_info.lnk_tp);
2404 bf_set(lpfc_mbx_run_diag_test_test_id, &run_link_diag_test->u.req,
2405 link_diag_test_cmd->test_id);
2406 bf_set(lpfc_mbx_run_diag_test_loops, &run_link_diag_test->u.req,
2407 link_diag_test_cmd->loops);
2408 bf_set(lpfc_mbx_run_diag_test_test_ver, &run_link_diag_test->u.req,
2409 link_diag_test_cmd->test_version);
2410 bf_set(lpfc_mbx_run_diag_test_err_act, &run_link_diag_test->u.req,
2411 link_diag_test_cmd->error_action);
2412
2413 mbxstatus = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
2414
2415 shdr = (union lpfc_sli4_cfg_shdr *)
2416 &pmboxq->u.mqe.un.sli4_config.header.cfg_shdr;
2417 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
2418 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
2419 if (shdr_status || shdr_add_status || mbxstatus) {
2420 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
2421 "3010 Run link diag test mailbox failed with "
2422 "mbx_status x%x status x%x, add_status x%x\n",
2423 mbxstatus, shdr_status, shdr_add_status);
2424 }
2425
2426 diag_status_reply = (struct diag_status *)
2427 bsg_reply->reply_data.vendor_reply.vendor_rsp;
2428
2429 if (job->reply_len <
2430 sizeof(struct fc_bsg_request) + sizeof(struct diag_status)) {
2431 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2432 "3012 Received Run link diag test reply "
2433 "below minimum size (%d): reply_len:%d\n",
2434 (int)(sizeof(struct fc_bsg_request) +
2435 sizeof(struct diag_status)),
2436 job->reply_len);
2437 rc = -EINVAL;
2438 goto job_error;
2439 }
2440
2441 diag_status_reply->mbox_status = mbxstatus;
2442 diag_status_reply->shdr_status = shdr_status;
2443 diag_status_reply->shdr_add_status = shdr_add_status;
2444
2445 link_diag_test_exit:
2446 rc = lpfc_sli4_bsg_set_link_diag_state(phba, 0);
2447
2448 if (pmboxq)
2449 mempool_free(pmboxq, phba->mbox_mem_pool);
2450
2451 lpfc_bsg_diag_mode_exit(phba);
2452
2453 job_error:
2454 /* make error code available to userspace */
2455 bsg_reply->result = rc;
2456 /* complete the job back to userspace if no error */
2457 if (rc == 0)
2458 bsg_job_done(job, bsg_reply->result,
2459 bsg_reply->reply_payload_rcv_len);
2460 return rc;
2461 }
2462
2463 /**
2464 * lpfcdiag_loop_self_reg - obtains a remote port login id
2465 * @phba: Pointer to HBA context object
2466 * @rpi: Pointer to a remote port login id
2467 *
2468 * This function obtains a remote port login id so the diag loopback test
2469 * can send and receive its own unsolicited CT command.
2470 **/
2471 static int lpfcdiag_loop_self_reg(struct lpfc_hba *phba, uint16_t *rpi)
2472 {
2473 LPFC_MBOXQ_t *mbox;
2474 struct lpfc_dmabuf *dmabuff;
2475 int status;
2476
2477 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2478 if (!mbox)
2479 return -ENOMEM;
2480
2481 if (phba->sli_rev < LPFC_SLI_REV4)
2482 status = lpfc_reg_rpi(phba, 0, phba->pport->fc_myDID,
2483 (uint8_t *)&phba->pport->fc_sparam,
2484 mbox, *rpi);
2485 else {
2486 *rpi = lpfc_sli4_alloc_rpi(phba);
2487 if (*rpi == LPFC_RPI_ALLOC_ERROR) {
2488 mempool_free(mbox, phba->mbox_mem_pool);
2489 return -EBUSY;
2490 }
2491 status = lpfc_reg_rpi(phba, phba->pport->vpi,
2492 phba->pport->fc_myDID,
2493 (uint8_t *)&phba->pport->fc_sparam,
2494 mbox, *rpi);
2495 }
2496
2497 if (status) {
2498 mempool_free(mbox, phba->mbox_mem_pool);
2499 if (phba->sli_rev == LPFC_SLI_REV4)
2500 lpfc_sli4_free_rpi(phba, *rpi);
2501 return -ENOMEM;
2502 }
2503
2504 dmabuff = (struct lpfc_dmabuf *)mbox->ctx_buf;
2505 mbox->ctx_buf = NULL;
2506 mbox->ctx_ndlp = NULL;
2507 status = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2508
2509 if ((status != MBX_SUCCESS) || (mbox->u.mb.mbxStatus)) {
2510 lpfc_mbuf_free(phba, dmabuff->virt, dmabuff->phys);
2511 kfree(dmabuff);
2512 if (status != MBX_TIMEOUT)
2513 mempool_free(mbox, phba->mbox_mem_pool);
2514 if (phba->sli_rev == LPFC_SLI_REV4)
2515 lpfc_sli4_free_rpi(phba, *rpi);
2516 return -ENODEV;
2517 }
2518
2519 if (phba->sli_rev < LPFC_SLI_REV4)
2520 *rpi = mbox->u.mb.un.varWords[0];
2521
2522 lpfc_mbuf_free(phba, dmabuff->virt, dmabuff->phys);
2523 kfree(dmabuff);
2524 mempool_free(mbox, phba->mbox_mem_pool);
2525 return 0;
2526 }
2527
2528 /**
2529 * lpfcdiag_loop_self_unreg - unregs from the rpi
2530 * @phba: Pointer to HBA context object
2531 * @rpi: Remote port login id
2532 *
2533 * This function unregisters the rpi obtained in lpfcdiag_loop_self_reg
2534 **/
2535 static int lpfcdiag_loop_self_unreg(struct lpfc_hba *phba, uint16_t rpi)
2536 {
2537 LPFC_MBOXQ_t *mbox;
2538 int status;
2539
2540 /* Allocate mboxq structure */
2541 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2542 if (mbox == NULL)
2543 return -ENOMEM;
2544
2545 if (phba->sli_rev < LPFC_SLI_REV4)
2546 lpfc_unreg_login(phba, 0, rpi, mbox);
2547 else
2548 lpfc_unreg_login(phba, phba->pport->vpi,
2549 phba->sli4_hba.rpi_ids[rpi], mbox);
2550
2551 status = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2552
2553 if ((status != MBX_SUCCESS) || (mbox->u.mb.mbxStatus)) {
2554 if (status != MBX_TIMEOUT)
2555 mempool_free(mbox, phba->mbox_mem_pool);
2556 return -EIO;
2557 }
2558 mempool_free(mbox, phba->mbox_mem_pool);
2559 if (phba->sli_rev == LPFC_SLI_REV4)
2560 lpfc_sli4_free_rpi(phba, rpi);
2561 return 0;
2562 }
2563
2564 /**
2565 * lpfcdiag_loop_get_xri - obtains the transmit and receive ids
2566 * @phba: Pointer to HBA context object
2567 * @rpi: Remote port login id
2568 * @txxri: Pointer to transmit exchange id
2569 * @rxxri: Pointer to response exchabge id
2570 *
2571 * This function obtains the transmit and receive ids required to send
2572 * an unsolicited ct command with a payload. A special lpfc FsType and CmdRsp
2573 * flags are used to the unsolicted response handler is able to process
2574 * the ct command sent on the same port.
2575 **/
2576 static int lpfcdiag_loop_get_xri(struct lpfc_hba *phba, uint16_t rpi,
2577 uint16_t *txxri, uint16_t * rxxri)
2578 {
2579 struct lpfc_bsg_event *evt;
2580 struct lpfc_iocbq *cmdiocbq, *rspiocbq;
2581 IOCB_t *cmd, *rsp;
2582 struct lpfc_dmabuf *dmabuf;
2583 struct ulp_bde64 *bpl = NULL;
2584 struct lpfc_sli_ct_request *ctreq = NULL;
2585 int ret_val = 0;
2586 int time_left;
2587 int iocb_stat = IOCB_SUCCESS;
2588 unsigned long flags;
2589
2590 *txxri = 0;
2591 *rxxri = 0;
2592 evt = lpfc_bsg_event_new(FC_REG_CT_EVENT, current->pid,
2593 SLI_CT_ELX_LOOPBACK);
2594 if (!evt)
2595 return -ENOMEM;
2596
2597 spin_lock_irqsave(&phba->ct_ev_lock, flags);
2598 list_add(&evt->node, &phba->ct_ev_waiters);
2599 lpfc_bsg_event_ref(evt);
2600 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2601
2602 cmdiocbq = lpfc_sli_get_iocbq(phba);
2603 rspiocbq = lpfc_sli_get_iocbq(phba);
2604
2605 dmabuf = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2606 if (dmabuf) {
2607 dmabuf->virt = lpfc_mbuf_alloc(phba, 0, &dmabuf->phys);
2608 if (dmabuf->virt) {
2609 INIT_LIST_HEAD(&dmabuf->list);
2610 bpl = (struct ulp_bde64 *) dmabuf->virt;
2611 memset(bpl, 0, sizeof(*bpl));
2612 ctreq = (struct lpfc_sli_ct_request *)(bpl + 1);
2613 bpl->addrHigh =
2614 le32_to_cpu(putPaddrHigh(dmabuf->phys +
2615 sizeof(*bpl)));
2616 bpl->addrLow =
2617 le32_to_cpu(putPaddrLow(dmabuf->phys +
2618 sizeof(*bpl)));
2619 bpl->tus.f.bdeFlags = 0;
2620 bpl->tus.f.bdeSize = ELX_LOOPBACK_HEADER_SZ;
2621 bpl->tus.w = le32_to_cpu(bpl->tus.w);
2622 }
2623 }
2624
2625 if (cmdiocbq == NULL || rspiocbq == NULL ||
2626 dmabuf == NULL || bpl == NULL || ctreq == NULL ||
2627 dmabuf->virt == NULL) {
2628 ret_val = -ENOMEM;
2629 goto err_get_xri_exit;
2630 }
2631
2632 cmd = &cmdiocbq->iocb;
2633 rsp = &rspiocbq->iocb;
2634
2635 memset(ctreq, 0, ELX_LOOPBACK_HEADER_SZ);
2636
2637 ctreq->RevisionId.bits.Revision = SLI_CT_REVISION;
2638 ctreq->RevisionId.bits.InId = 0;
2639 ctreq->FsType = SLI_CT_ELX_LOOPBACK;
2640 ctreq->FsSubType = 0;
2641 ctreq->CommandResponse.bits.CmdRsp = ELX_LOOPBACK_XRI_SETUP;
2642 ctreq->CommandResponse.bits.Size = 0;
2643
2644
2645 cmd->un.xseq64.bdl.addrHigh = putPaddrHigh(dmabuf->phys);
2646 cmd->un.xseq64.bdl.addrLow = putPaddrLow(dmabuf->phys);
2647 cmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
2648 cmd->un.xseq64.bdl.bdeSize = sizeof(*bpl);
2649
2650 cmd->un.xseq64.w5.hcsw.Fctl = LA;
2651 cmd->un.xseq64.w5.hcsw.Dfctl = 0;
2652 cmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL;
2653 cmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT;
2654
2655 cmd->ulpCommand = CMD_XMIT_SEQUENCE64_CR;
2656 cmd->ulpBdeCount = 1;
2657 cmd->ulpLe = 1;
2658 cmd->ulpClass = CLASS3;
2659 cmd->ulpContext = rpi;
2660
2661 cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
2662 cmdiocbq->vport = phba->pport;
2663 cmdiocbq->iocb_cmpl = NULL;
2664
2665 iocb_stat = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq,
2666 rspiocbq,
2667 (phba->fc_ratov * 2)
2668 + LPFC_DRVR_TIMEOUT);
2669 if ((iocb_stat != IOCB_SUCCESS) || (rsp->ulpStatus != IOSTAT_SUCCESS)) {
2670 ret_val = -EIO;
2671 goto err_get_xri_exit;
2672 }
2673 *txxri = rsp->ulpContext;
2674
2675 evt->waiting = 1;
2676 evt->wait_time_stamp = jiffies;
2677 time_left = wait_event_interruptible_timeout(
2678 evt->wq, !list_empty(&evt->events_to_see),
2679 msecs_to_jiffies(1000 *
2680 ((phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT)));
2681 if (list_empty(&evt->events_to_see))
2682 ret_val = (time_left) ? -EINTR : -ETIMEDOUT;
2683 else {
2684 spin_lock_irqsave(&phba->ct_ev_lock, flags);
2685 list_move(evt->events_to_see.prev, &evt->events_to_get);
2686 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2687 *rxxri = (list_entry(evt->events_to_get.prev,
2688 typeof(struct event_data),
2689 node))->immed_dat;
2690 }
2691 evt->waiting = 0;
2692
2693 err_get_xri_exit:
2694 spin_lock_irqsave(&phba->ct_ev_lock, flags);
2695 lpfc_bsg_event_unref(evt); /* release ref */
2696 lpfc_bsg_event_unref(evt); /* delete */
2697 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2698
2699 if (dmabuf) {
2700 if (dmabuf->virt)
2701 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
2702 kfree(dmabuf);
2703 }
2704
2705 if (cmdiocbq && (iocb_stat != IOCB_TIMEDOUT))
2706 lpfc_sli_release_iocbq(phba, cmdiocbq);
2707 if (rspiocbq)
2708 lpfc_sli_release_iocbq(phba, rspiocbq);
2709 return ret_val;
2710 }
2711
2712 /**
2713 * lpfc_bsg_dma_page_alloc - allocate a bsg mbox page sized dma buffers
2714 * @phba: Pointer to HBA context object
2715 *
2716 * This function allocates BSG_MBOX_SIZE (4KB) page size dma buffer and
2717 * returns the pointer to the buffer.
2718 **/
2719 static struct lpfc_dmabuf *
2720 lpfc_bsg_dma_page_alloc(struct lpfc_hba *phba)
2721 {
2722 struct lpfc_dmabuf *dmabuf;
2723 struct pci_dev *pcidev = phba->pcidev;
2724
2725 /* allocate dma buffer struct */
2726 dmabuf = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2727 if (!dmabuf)
2728 return NULL;
2729
2730 INIT_LIST_HEAD(&dmabuf->list);
2731
2732 /* now, allocate dma buffer */
2733 dmabuf->virt = dma_alloc_coherent(&pcidev->dev, BSG_MBOX_SIZE,
2734 &(dmabuf->phys), GFP_KERNEL);
2735
2736 if (!dmabuf->virt) {
2737 kfree(dmabuf);
2738 return NULL;
2739 }
2740
2741 return dmabuf;
2742 }
2743
2744 /**
2745 * lpfc_bsg_dma_page_free - free a bsg mbox page sized dma buffer
2746 * @phba: Pointer to HBA context object.
2747 * @dmabuf: Pointer to the bsg mbox page sized dma buffer descriptor.
2748 *
2749 * This routine just simply frees a dma buffer and its associated buffer
2750 * descriptor referred by @dmabuf.
2751 **/
2752 static void
2753 lpfc_bsg_dma_page_free(struct lpfc_hba *phba, struct lpfc_dmabuf *dmabuf)
2754 {
2755 struct pci_dev *pcidev = phba->pcidev;
2756
2757 if (!dmabuf)
2758 return;
2759
2760 if (dmabuf->virt)
2761 dma_free_coherent(&pcidev->dev, BSG_MBOX_SIZE,
2762 dmabuf->virt, dmabuf->phys);
2763 kfree(dmabuf);
2764 return;
2765 }
2766
2767 /**
2768 * lpfc_bsg_dma_page_list_free - free a list of bsg mbox page sized dma buffers
2769 * @phba: Pointer to HBA context object.
2770 * @dmabuf_list: Pointer to a list of bsg mbox page sized dma buffer descs.
2771 *
2772 * This routine just simply frees all dma buffers and their associated buffer
2773 * descriptors referred by @dmabuf_list.
2774 **/
2775 static void
2776 lpfc_bsg_dma_page_list_free(struct lpfc_hba *phba,
2777 struct list_head *dmabuf_list)
2778 {
2779 struct lpfc_dmabuf *dmabuf, *next_dmabuf;
2780
2781 if (list_empty(dmabuf_list))
2782 return;
2783
2784 list_for_each_entry_safe(dmabuf, next_dmabuf, dmabuf_list, list) {
2785 list_del_init(&dmabuf->list);
2786 lpfc_bsg_dma_page_free(phba, dmabuf);
2787 }
2788 return;
2789 }
2790
2791 /**
2792 * diag_cmd_data_alloc - fills in a bde struct with dma buffers
2793 * @phba: Pointer to HBA context object
2794 * @bpl: Pointer to 64 bit bde structure
2795 * @size: Number of bytes to process
2796 * @nocopydata: Flag to copy user data into the allocated buffer
2797 *
2798 * This function allocates page size buffers and populates an lpfc_dmabufext.
2799 * If allowed the user data pointed to with indataptr is copied into the kernel
2800 * memory. The chained list of page size buffers is returned.
2801 **/
2802 static struct lpfc_dmabufext *
2803 diag_cmd_data_alloc(struct lpfc_hba *phba,
2804 struct ulp_bde64 *bpl, uint32_t size,
2805 int nocopydata)
2806 {
2807 struct lpfc_dmabufext *mlist = NULL;
2808 struct lpfc_dmabufext *dmp;
2809 int cnt, offset = 0, i = 0;
2810 struct pci_dev *pcidev;
2811
2812 pcidev = phba->pcidev;
2813
2814 while (size) {
2815 /* We get chunks of 4K */
2816 if (size > BUF_SZ_4K)
2817 cnt = BUF_SZ_4K;
2818 else
2819 cnt = size;
2820
2821 /* allocate struct lpfc_dmabufext buffer header */
2822 dmp = kmalloc(sizeof(struct lpfc_dmabufext), GFP_KERNEL);
2823 if (!dmp)
2824 goto out;
2825
2826 INIT_LIST_HEAD(&dmp->dma.list);
2827
2828 /* Queue it to a linked list */
2829 if (mlist)
2830 list_add_tail(&dmp->dma.list, &mlist->dma.list);
2831 else
2832 mlist = dmp;
2833
2834 /* allocate buffer */
2835 dmp->dma.virt = dma_alloc_coherent(&pcidev->dev,
2836 cnt,
2837 &(dmp->dma.phys),
2838 GFP_KERNEL);
2839
2840 if (!dmp->dma.virt)
2841 goto out;
2842
2843 dmp->size = cnt;
2844
2845 if (nocopydata) {
2846 bpl->tus.f.bdeFlags = 0;
2847 } else {
2848 memset((uint8_t *)dmp->dma.virt, 0, cnt);
2849 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
2850 }
2851
2852 /* build buffer ptr list for IOCB */
2853 bpl->addrLow = le32_to_cpu(putPaddrLow(dmp->dma.phys));
2854 bpl->addrHigh = le32_to_cpu(putPaddrHigh(dmp->dma.phys));
2855 bpl->tus.f.bdeSize = (ushort) cnt;
2856 bpl->tus.w = le32_to_cpu(bpl->tus.w);
2857 bpl++;
2858
2859 i++;
2860 offset += cnt;
2861 size -= cnt;
2862 }
2863
2864 if (mlist) {
2865 mlist->flag = i;
2866 return mlist;
2867 }
2868 out:
2869 diag_cmd_data_free(phba, mlist);
2870 return NULL;
2871 }
2872
2873 /**
2874 * lpfcdiag_loop_post_rxbufs - post the receive buffers for an unsol CT cmd
2875 * @phba: Pointer to HBA context object
2876 * @rxxri: Receive exchange id
2877 * @len: Number of data bytes
2878 *
2879 * This function allocates and posts a data buffer of sufficient size to receive
2880 * an unsolicted CT command.
2881 **/
2882 static int lpfcdiag_loop_post_rxbufs(struct lpfc_hba *phba, uint16_t rxxri,
2883 size_t len)
2884 {
2885 struct lpfc_sli_ring *pring;
2886 struct lpfc_iocbq *cmdiocbq;
2887 IOCB_t *cmd = NULL;
2888 struct list_head head, *curr, *next;
2889 struct lpfc_dmabuf *rxbmp;
2890 struct lpfc_dmabuf *dmp;
2891 struct lpfc_dmabuf *mp[2] = {NULL, NULL};
2892 struct ulp_bde64 *rxbpl = NULL;
2893 uint32_t num_bde;
2894 struct lpfc_dmabufext *rxbuffer = NULL;
2895 int ret_val = 0;
2896 int iocb_stat;
2897 int i = 0;
2898
2899 pring = lpfc_phba_elsring(phba);
2900
2901 cmdiocbq = lpfc_sli_get_iocbq(phba);
2902 rxbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2903 if (rxbmp != NULL) {
2904 rxbmp->virt = lpfc_mbuf_alloc(phba, 0, &rxbmp->phys);
2905 if (rxbmp->virt) {
2906 INIT_LIST_HEAD(&rxbmp->list);
2907 rxbpl = (struct ulp_bde64 *) rxbmp->virt;
2908 rxbuffer = diag_cmd_data_alloc(phba, rxbpl, len, 0);
2909 }
2910 }
2911
2912 if (!cmdiocbq || !rxbmp || !rxbpl || !rxbuffer || !pring) {
2913 ret_val = -ENOMEM;
2914 goto err_post_rxbufs_exit;
2915 }
2916
2917 /* Queue buffers for the receive exchange */
2918 num_bde = (uint32_t)rxbuffer->flag;
2919 dmp = &rxbuffer->dma;
2920
2921 cmd = &cmdiocbq->iocb;
2922 i = 0;
2923
2924 INIT_LIST_HEAD(&head);
2925 list_add_tail(&head, &dmp->list);
2926 list_for_each_safe(curr, next, &head) {
2927 mp[i] = list_entry(curr, struct lpfc_dmabuf, list);
2928 list_del(curr);
2929
2930 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
2931 mp[i]->buffer_tag = lpfc_sli_get_buffer_tag(phba);
2932 cmd->un.quexri64cx.buff.bde.addrHigh =
2933 putPaddrHigh(mp[i]->phys);
2934 cmd->un.quexri64cx.buff.bde.addrLow =
2935 putPaddrLow(mp[i]->phys);
2936 cmd->un.quexri64cx.buff.bde.tus.f.bdeSize =
2937 ((struct lpfc_dmabufext *)mp[i])->size;
2938 cmd->un.quexri64cx.buff.buffer_tag = mp[i]->buffer_tag;
2939 cmd->ulpCommand = CMD_QUE_XRI64_CX;
2940 cmd->ulpPU = 0;
2941 cmd->ulpLe = 1;
2942 cmd->ulpBdeCount = 1;
2943 cmd->unsli3.que_xri64cx_ext_words.ebde_count = 0;
2944
2945 } else {
2946 cmd->un.cont64[i].addrHigh = putPaddrHigh(mp[i]->phys);
2947 cmd->un.cont64[i].addrLow = putPaddrLow(mp[i]->phys);
2948 cmd->un.cont64[i].tus.f.bdeSize =
2949 ((struct lpfc_dmabufext *)mp[i])->size;
2950 cmd->ulpBdeCount = ++i;
2951
2952 if ((--num_bde > 0) && (i < 2))
2953 continue;
2954
2955 cmd->ulpCommand = CMD_QUE_XRI_BUF64_CX;
2956 cmd->ulpLe = 1;
2957 }
2958
2959 cmd->ulpClass = CLASS3;
2960 cmd->ulpContext = rxxri;
2961
2962 iocb_stat = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq,
2963 0);
2964 if (iocb_stat == IOCB_ERROR) {
2965 diag_cmd_data_free(phba,
2966 (struct lpfc_dmabufext *)mp[0]);
2967 if (mp[1])
2968 diag_cmd_data_free(phba,
2969 (struct lpfc_dmabufext *)mp[1]);
2970 dmp = list_entry(next, struct lpfc_dmabuf, list);
2971 ret_val = -EIO;
2972 goto err_post_rxbufs_exit;
2973 }
2974
2975 lpfc_sli_ringpostbuf_put(phba, pring, mp[0]);
2976 if (mp[1]) {
2977 lpfc_sli_ringpostbuf_put(phba, pring, mp[1]);
2978 mp[1] = NULL;
2979 }
2980
2981 /* The iocb was freed by lpfc_sli_issue_iocb */
2982 cmdiocbq = lpfc_sli_get_iocbq(phba);
2983 if (!cmdiocbq) {
2984 dmp = list_entry(next, struct lpfc_dmabuf, list);
2985 ret_val = -EIO;
2986 goto err_post_rxbufs_exit;
2987 }
2988
2989 cmd = &cmdiocbq->iocb;
2990 i = 0;
2991 }
2992 list_del(&head);
2993
2994 err_post_rxbufs_exit:
2995
2996 if (rxbmp) {
2997 if (rxbmp->virt)
2998 lpfc_mbuf_free(phba, rxbmp->virt, rxbmp->phys);
2999 kfree(rxbmp);
3000 }
3001
3002 if (cmdiocbq)
3003 lpfc_sli_release_iocbq(phba, cmdiocbq);
3004 return ret_val;
3005 }
3006
3007 /**
3008 * lpfc_bsg_diag_loopback_run - run loopback on a port by issue ct cmd to itself
3009 * @job: LPFC_BSG_VENDOR_DIAG_TEST fc_bsg_job
3010 *
3011 * This function receives a user data buffer to be transmitted and received on
3012 * the same port, the link must be up and in loopback mode prior
3013 * to being called.
3014 * 1. A kernel buffer is allocated to copy the user data into.
3015 * 2. The port registers with "itself".
3016 * 3. The transmit and receive exchange ids are obtained.
3017 * 4. The receive exchange id is posted.
3018 * 5. A new els loopback event is created.
3019 * 6. The command and response iocbs are allocated.
3020 * 7. The cmd iocb FsType is set to elx loopback and the CmdRsp to looppback.
3021 *
3022 * This function is meant to be called n times while the port is in loopback
3023 * so it is the apps responsibility to issue a reset to take the port out
3024 * of loopback mode.
3025 **/
3026 static int
3027 lpfc_bsg_diag_loopback_run(struct bsg_job *job)
3028 {
3029 struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
3030 struct fc_bsg_reply *bsg_reply = job->reply;
3031 struct lpfc_hba *phba = vport->phba;
3032 struct lpfc_bsg_event *evt;
3033 struct event_data *evdat;
3034 struct lpfc_sli *psli = &phba->sli;
3035 uint32_t size;
3036 uint32_t full_size;
3037 size_t segment_len = 0, segment_offset = 0, current_offset = 0;
3038 uint16_t rpi = 0;
3039 struct lpfc_iocbq *cmdiocbq, *rspiocbq = NULL;
3040 IOCB_t *cmd, *rsp = NULL;
3041 struct lpfc_sli_ct_request *ctreq;
3042 struct lpfc_dmabuf *txbmp;
3043 struct ulp_bde64 *txbpl = NULL;
3044 struct lpfc_dmabufext *txbuffer = NULL;
3045 struct list_head head;
3046 struct lpfc_dmabuf *curr;
3047 uint16_t txxri = 0, rxxri;
3048 uint32_t num_bde;
3049 uint8_t *ptr = NULL, *rx_databuf = NULL;
3050 int rc = 0;
3051 int time_left;
3052 int iocb_stat = IOCB_SUCCESS;
3053 unsigned long flags;
3054 void *dataout = NULL;
3055 uint32_t total_mem;
3056
3057 /* in case no data is returned return just the return code */
3058 bsg_reply->reply_payload_rcv_len = 0;
3059
3060 if (job->request_len <
3061 sizeof(struct fc_bsg_request) + sizeof(struct diag_mode_test)) {
3062 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3063 "2739 Received DIAG TEST request below minimum "
3064 "size\n");
3065 rc = -EINVAL;
3066 goto loopback_test_exit;
3067 }
3068
3069 if (job->request_payload.payload_len !=
3070 job->reply_payload.payload_len) {
3071 rc = -EINVAL;
3072 goto loopback_test_exit;
3073 }
3074
3075 if ((phba->link_state == LPFC_HBA_ERROR) ||
3076 (psli->sli_flag & LPFC_BLOCK_MGMT_IO) ||
3077 (!(psli->sli_flag & LPFC_SLI_ACTIVE))) {
3078 rc = -EACCES;
3079 goto loopback_test_exit;
3080 }
3081
3082 if (!lpfc_is_link_up(phba) || !(phba->link_flag & LS_LOOPBACK_MODE)) {
3083 rc = -EACCES;
3084 goto loopback_test_exit;
3085 }
3086
3087 size = job->request_payload.payload_len;
3088 full_size = size + ELX_LOOPBACK_HEADER_SZ; /* plus the header */
3089
3090 if ((size == 0) || (size > 80 * BUF_SZ_4K)) {
3091 rc = -ERANGE;
3092 goto loopback_test_exit;
3093 }
3094
3095 if (full_size >= BUF_SZ_4K) {
3096 /*
3097 * Allocate memory for ioctl data. If buffer is bigger than 64k,
3098 * then we allocate 64k and re-use that buffer over and over to
3099 * xfer the whole block. This is because Linux kernel has a
3100 * problem allocating more than 120k of kernel space memory. Saw
3101 * problem with GET_FCPTARGETMAPPING...
3102 */
3103 if (size <= (64 * 1024))
3104 total_mem = full_size;
3105 else
3106 total_mem = 64 * 1024;
3107 } else
3108 /* Allocate memory for ioctl data */
3109 total_mem = BUF_SZ_4K;
3110
3111 dataout = kmalloc(total_mem, GFP_KERNEL);
3112 if (dataout == NULL) {
3113 rc = -ENOMEM;
3114 goto loopback_test_exit;
3115 }
3116
3117 ptr = dataout;
3118 ptr += ELX_LOOPBACK_HEADER_SZ;
3119 sg_copy_to_buffer(job->request_payload.sg_list,
3120 job->request_payload.sg_cnt,
3121 ptr, size);
3122 rc = lpfcdiag_loop_self_reg(phba, &rpi);
3123 if (rc)
3124 goto loopback_test_exit;
3125
3126 if (phba->sli_rev < LPFC_SLI_REV4) {
3127 rc = lpfcdiag_loop_get_xri(phba, rpi, &txxri, &rxxri);
3128 if (rc) {
3129 lpfcdiag_loop_self_unreg(phba, rpi);
3130 goto loopback_test_exit;
3131 }
3132
3133 rc = lpfcdiag_loop_post_rxbufs(phba, rxxri, full_size);
3134 if (rc) {
3135 lpfcdiag_loop_self_unreg(phba, rpi);
3136 goto loopback_test_exit;
3137 }
3138 }
3139 evt = lpfc_bsg_event_new(FC_REG_CT_EVENT, current->pid,
3140 SLI_CT_ELX_LOOPBACK);
3141 if (!evt) {
3142 lpfcdiag_loop_self_unreg(phba, rpi);
3143 rc = -ENOMEM;
3144 goto loopback_test_exit;
3145 }
3146
3147 spin_lock_irqsave(&phba->ct_ev_lock, flags);
3148 list_add(&evt->node, &phba->ct_ev_waiters);
3149 lpfc_bsg_event_ref(evt);
3150 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3151
3152 cmdiocbq = lpfc_sli_get_iocbq(phba);
3153 if (phba->sli_rev < LPFC_SLI_REV4)
3154 rspiocbq = lpfc_sli_get_iocbq(phba);
3155 txbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
3156
3157 if (txbmp) {
3158 txbmp->virt = lpfc_mbuf_alloc(phba, 0, &txbmp->phys);
3159 if (txbmp->virt) {
3160 INIT_LIST_HEAD(&txbmp->list);
3161 txbpl = (struct ulp_bde64 *) txbmp->virt;
3162 txbuffer = diag_cmd_data_alloc(phba,
3163 txbpl, full_size, 0);
3164 }
3165 }
3166
3167 if (!cmdiocbq || !txbmp || !txbpl || !txbuffer || !txbmp->virt) {
3168 rc = -ENOMEM;
3169 goto err_loopback_test_exit;
3170 }
3171 if ((phba->sli_rev < LPFC_SLI_REV4) && !rspiocbq) {
3172 rc = -ENOMEM;
3173 goto err_loopback_test_exit;
3174 }
3175
3176 cmd = &cmdiocbq->iocb;
3177 if (phba->sli_rev < LPFC_SLI_REV4)
3178 rsp = &rspiocbq->iocb;
3179
3180 INIT_LIST_HEAD(&head);
3181 list_add_tail(&head, &txbuffer->dma.list);
3182 list_for_each_entry(curr, &head, list) {
3183 segment_len = ((struct lpfc_dmabufext *)curr)->size;
3184 if (current_offset == 0) {
3185 ctreq = curr->virt;
3186 memset(ctreq, 0, ELX_LOOPBACK_HEADER_SZ);
3187 ctreq->RevisionId.bits.Revision = SLI_CT_REVISION;
3188 ctreq->RevisionId.bits.InId = 0;
3189 ctreq->FsType = SLI_CT_ELX_LOOPBACK;
3190 ctreq->FsSubType = 0;
3191 ctreq->CommandResponse.bits.CmdRsp = ELX_LOOPBACK_DATA;
3192 ctreq->CommandResponse.bits.Size = size;
3193 segment_offset = ELX_LOOPBACK_HEADER_SZ;
3194 } else
3195 segment_offset = 0;
3196
3197 BUG_ON(segment_offset >= segment_len);
3198 memcpy(curr->virt + segment_offset,
3199 ptr + current_offset,
3200 segment_len - segment_offset);
3201
3202 current_offset += segment_len - segment_offset;
3203 BUG_ON(current_offset > size);
3204 }
3205 list_del(&head);
3206
3207 /* Build the XMIT_SEQUENCE iocb */
3208 num_bde = (uint32_t)txbuffer->flag;
3209
3210 cmd->un.xseq64.bdl.addrHigh = putPaddrHigh(txbmp->phys);
3211 cmd->un.xseq64.bdl.addrLow = putPaddrLow(txbmp->phys);
3212 cmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
3213 cmd->un.xseq64.bdl.bdeSize = (num_bde * sizeof(struct ulp_bde64));
3214
3215 cmd->un.xseq64.w5.hcsw.Fctl = (LS | LA);
3216 cmd->un.xseq64.w5.hcsw.Dfctl = 0;
3217 cmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL;
3218 cmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT;
3219
3220 cmd->ulpCommand = CMD_XMIT_SEQUENCE64_CX;
3221 cmd->ulpBdeCount = 1;
3222 cmd->ulpLe = 1;
3223 cmd->ulpClass = CLASS3;
3224
3225 if (phba->sli_rev < LPFC_SLI_REV4) {
3226 cmd->ulpContext = txxri;
3227 } else {
3228 cmd->un.xseq64.bdl.ulpIoTag32 = 0;
3229 cmd->un.ulpWord[3] = phba->sli4_hba.rpi_ids[rpi];
3230 cmdiocbq->context3 = txbmp;
3231 cmdiocbq->sli4_xritag = NO_XRI;
3232 cmd->unsli3.rcvsli3.ox_id = 0xffff;
3233 }
3234 cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
3235 cmdiocbq->iocb_flag |= LPFC_IO_LOOPBACK;
3236 cmdiocbq->vport = phba->pport;
3237 cmdiocbq->iocb_cmpl = NULL;
3238 iocb_stat = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq,
3239 rspiocbq, (phba->fc_ratov * 2) +
3240 LPFC_DRVR_TIMEOUT);
3241
3242 if ((iocb_stat != IOCB_SUCCESS) ||
3243 ((phba->sli_rev < LPFC_SLI_REV4) &&
3244 (rsp->ulpStatus != IOSTAT_SUCCESS))) {
3245 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3246 "3126 Failed loopback test issue iocb: "
3247 "iocb_stat:x%x\n", iocb_stat);
3248 rc = -EIO;
3249 goto err_loopback_test_exit;
3250 }
3251
3252 evt->waiting = 1;
3253 time_left = wait_event_interruptible_timeout(
3254 evt->wq, !list_empty(&evt->events_to_see),
3255 msecs_to_jiffies(1000 *
3256 ((phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT)));
3257 evt->waiting = 0;
3258 if (list_empty(&evt->events_to_see)) {
3259 rc = (time_left) ? -EINTR : -ETIMEDOUT;
3260 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3261 "3125 Not receiving unsolicited event, "
3262 "rc:x%x\n", rc);
3263 } else {
3264 spin_lock_irqsave(&phba->ct_ev_lock, flags);
3265 list_move(evt->events_to_see.prev, &evt->events_to_get);
3266 evdat = list_entry(evt->events_to_get.prev,
3267 typeof(*evdat), node);
3268 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3269 rx_databuf = evdat->data;
3270 if (evdat->len != full_size) {
3271 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3272 "1603 Loopback test did not receive expected "
3273 "data length. actual length 0x%x expected "
3274 "length 0x%x\n",
3275 evdat->len, full_size);
3276 rc = -EIO;
3277 } else if (rx_databuf == NULL)
3278 rc = -EIO;
3279 else {
3280 rc = IOCB_SUCCESS;
3281 /* skip over elx loopback header */
3282 rx_databuf += ELX_LOOPBACK_HEADER_SZ;
3283 bsg_reply->reply_payload_rcv_len =
3284 sg_copy_from_buffer(job->reply_payload.sg_list,
3285 job->reply_payload.sg_cnt,
3286 rx_databuf, size);
3287 bsg_reply->reply_payload_rcv_len = size;
3288 }
3289 }
3290
3291 err_loopback_test_exit:
3292 lpfcdiag_loop_self_unreg(phba, rpi);
3293
3294 spin_lock_irqsave(&phba->ct_ev_lock, flags);
3295 lpfc_bsg_event_unref(evt); /* release ref */
3296 lpfc_bsg_event_unref(evt); /* delete */
3297 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3298
3299 if ((cmdiocbq != NULL) && (iocb_stat != IOCB_TIMEDOUT))
3300 lpfc_sli_release_iocbq(phba, cmdiocbq);
3301
3302 if (rspiocbq != NULL)
3303 lpfc_sli_release_iocbq(phba, rspiocbq);
3304
3305 if (txbmp != NULL) {
3306 if (txbpl != NULL) {
3307 if (txbuffer != NULL)
3308 diag_cmd_data_free(phba, txbuffer);
3309 lpfc_mbuf_free(phba, txbmp->virt, txbmp->phys);
3310 }
3311 kfree(txbmp);
3312 }
3313
3314 loopback_test_exit:
3315 kfree(dataout);
3316 /* make error code available to userspace */
3317 bsg_reply->result = rc;
3318 job->dd_data = NULL;
3319 /* complete the job back to userspace if no error */
3320 if (rc == IOCB_SUCCESS)
3321 bsg_job_done(job, bsg_reply->result,
3322 bsg_reply->reply_payload_rcv_len);
3323 return rc;
3324 }
3325
3326 /**
3327 * lpfc_bsg_get_dfc_rev - process a GET_DFC_REV bsg vendor command
3328 * @job: GET_DFC_REV fc_bsg_job
3329 **/
3330 static int
3331 lpfc_bsg_get_dfc_rev(struct bsg_job *job)
3332 {
3333 struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
3334 struct fc_bsg_reply *bsg_reply = job->reply;
3335 struct lpfc_hba *phba = vport->phba;
3336 struct get_mgmt_rev_reply *event_reply;
3337 int rc = 0;
3338
3339 if (job->request_len <
3340 sizeof(struct fc_bsg_request) + sizeof(struct get_mgmt_rev)) {
3341 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3342 "2740 Received GET_DFC_REV request below "
3343 "minimum size\n");
3344 rc = -EINVAL;
3345 goto job_error;
3346 }
3347
3348 event_reply = (struct get_mgmt_rev_reply *)
3349 bsg_reply->reply_data.vendor_reply.vendor_rsp;
3350
3351 if (job->reply_len <
3352 sizeof(struct fc_bsg_request) + sizeof(struct get_mgmt_rev_reply)) {
3353 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3354 "2741 Received GET_DFC_REV reply below "
3355 "minimum size\n");
3356 rc = -EINVAL;
3357 goto job_error;
3358 }
3359
3360 event_reply->info.a_Major = MANAGEMENT_MAJOR_REV;
3361 event_reply->info.a_Minor = MANAGEMENT_MINOR_REV;
3362 job_error:
3363 bsg_reply->result = rc;
3364 if (rc == 0)
3365 bsg_job_done(job, bsg_reply->result,
3366 bsg_reply->reply_payload_rcv_len);
3367 return rc;
3368 }
3369
3370 /**
3371 * lpfc_bsg_issue_mbox_cmpl - lpfc_bsg_issue_mbox mbox completion handler
3372 * @phba: Pointer to HBA context object.
3373 * @pmboxq: Pointer to mailbox command.
3374 *
3375 * This is completion handler function for mailbox commands issued from
3376 * lpfc_bsg_issue_mbox function. This function is called by the
3377 * mailbox event handler function with no lock held. This function
3378 * will wake up thread waiting on the wait queue pointed by context1
3379 * of the mailbox.
3380 **/
3381 static void
3382 lpfc_bsg_issue_mbox_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
3383 {
3384 struct bsg_job_data *dd_data;
3385 struct fc_bsg_reply *bsg_reply;
3386 struct bsg_job *job;
3387 uint32_t size;
3388 unsigned long flags;
3389 uint8_t *pmb, *pmb_buf;
3390
3391 dd_data = pmboxq->ctx_ndlp;
3392
3393 /*
3394 * The outgoing buffer is readily referred from the dma buffer,
3395 * just need to get header part from mailboxq structure.
3396 */
3397 pmb = (uint8_t *)&pmboxq->u.mb;
3398 pmb_buf = (uint8_t *)dd_data->context_un.mbox.mb;
3399 memcpy(pmb_buf, pmb, sizeof(MAILBOX_t));
3400
3401 /* Determine if job has been aborted */
3402
3403 spin_lock_irqsave(&phba->ct_ev_lock, flags);
3404 job = dd_data->set_job;
3405 if (job) {
3406 /* Prevent timeout handling from trying to abort job */
3407 job->dd_data = NULL;
3408 }
3409 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3410
3411 /* Copy the mailbox data to the job if it is still active */
3412
3413 if (job) {
3414 bsg_reply = job->reply;
3415 size = job->reply_payload.payload_len;
3416 bsg_reply->reply_payload_rcv_len =
3417 sg_copy_from_buffer(job->reply_payload.sg_list,
3418 job->reply_payload.sg_cnt,
3419 pmb_buf, size);
3420 }
3421
3422 dd_data->set_job = NULL;
3423 mempool_free(dd_data->context_un.mbox.pmboxq, phba->mbox_mem_pool);
3424 lpfc_bsg_dma_page_free(phba, dd_data->context_un.mbox.dmabuffers);
3425 kfree(dd_data);
3426
3427 /* Complete the job if the job is still active */
3428
3429 if (job) {
3430 bsg_reply->result = 0;
3431 bsg_job_done(job, bsg_reply->result,
3432 bsg_reply->reply_payload_rcv_len);
3433 }
3434 return;
3435 }
3436
3437 /**
3438 * lpfc_bsg_check_cmd_access - test for a supported mailbox command
3439 * @phba: Pointer to HBA context object.
3440 * @mb: Pointer to a mailbox object.
3441 * @vport: Pointer to a vport object.
3442 *
3443 * Some commands require the port to be offline, some may not be called from
3444 * the application.
3445 **/
3446 static int lpfc_bsg_check_cmd_access(struct lpfc_hba *phba,
3447 MAILBOX_t *mb, struct lpfc_vport *vport)
3448 {
3449 /* return negative error values for bsg job */
3450 switch (mb->mbxCommand) {
3451 /* Offline only */
3452 case MBX_INIT_LINK:
3453 case MBX_DOWN_LINK:
3454 case MBX_CONFIG_LINK:
3455 case MBX_CONFIG_RING:
3456 case MBX_RESET_RING:
3457 case MBX_UNREG_LOGIN:
3458 case MBX_CLEAR_LA:
3459 case MBX_DUMP_CONTEXT:
3460 case MBX_RUN_DIAGS:
3461 case MBX_RESTART:
3462 case MBX_SET_MASK:
3463 if (!(vport->fc_flag & FC_OFFLINE_MODE)) {
3464 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3465 "2743 Command 0x%x is illegal in on-line "
3466 "state\n",
3467 mb->mbxCommand);
3468 return -EPERM;
3469 }
3470 case MBX_WRITE_NV:
3471 case MBX_WRITE_VPARMS:
3472 case MBX_LOAD_SM:
3473 case MBX_READ_NV:
3474 case MBX_READ_CONFIG:
3475 case MBX_READ_RCONFIG:
3476 case MBX_READ_STATUS:
3477 case MBX_READ_XRI:
3478 case MBX_READ_REV:
3479 case MBX_READ_LNK_STAT:
3480 case MBX_DUMP_MEMORY:
3481 case MBX_DOWN_LOAD:
3482 case MBX_UPDATE_CFG:
3483 case MBX_KILL_BOARD:
3484 case MBX_READ_TOPOLOGY:
3485 case MBX_LOAD_AREA:
3486 case MBX_LOAD_EXP_ROM:
3487 case MBX_BEACON:
3488 case MBX_DEL_LD_ENTRY:
3489 case MBX_SET_DEBUG:
3490 case MBX_WRITE_WWN:
3491 case MBX_SLI4_CONFIG:
3492 case MBX_READ_EVENT_LOG:
3493 case MBX_READ_EVENT_LOG_STATUS:
3494 case MBX_WRITE_EVENT_LOG:
3495 case MBX_PORT_CAPABILITIES:
3496 case MBX_PORT_IOV_CONTROL:
3497 case MBX_RUN_BIU_DIAG64:
3498 break;
3499 case MBX_SET_VARIABLE:
3500 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3501 "1226 mbox: set_variable 0x%x, 0x%x\n",
3502 mb->un.varWords[0],
3503 mb->un.varWords[1]);
3504 if ((mb->un.varWords[0] == SETVAR_MLOMNT)
3505 && (mb->un.varWords[1] == 1)) {
3506 phba->wait_4_mlo_maint_flg = 1;
3507 } else if (mb->un.varWords[0] == SETVAR_MLORST) {
3508 spin_lock_irq(&phba->hbalock);
3509 phba->link_flag &= ~LS_LOOPBACK_MODE;
3510 spin_unlock_irq(&phba->hbalock);
3511 phba->fc_topology = LPFC_TOPOLOGY_PT_PT;
3512 }
3513 break;
3514 case MBX_READ_SPARM64:
3515 case MBX_REG_LOGIN:
3516 case MBX_REG_LOGIN64:
3517 case MBX_CONFIG_PORT:
3518 case MBX_RUN_BIU_DIAG:
3519 default:
3520 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3521 "2742 Unknown Command 0x%x\n",
3522 mb->mbxCommand);
3523 return -EPERM;
3524 }
3525
3526 return 0; /* ok */
3527 }
3528
3529 /**
3530 * lpfc_bsg_mbox_ext_cleanup - clean up context of multi-buffer mbox session
3531 * @phba: Pointer to HBA context object.
3532 *
3533 * This is routine clean up and reset BSG handling of multi-buffer mbox
3534 * command session.
3535 **/
3536 static void
3537 lpfc_bsg_mbox_ext_session_reset(struct lpfc_hba *phba)
3538 {
3539 if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_IDLE)
3540 return;
3541
3542 /* free all memory, including dma buffers */
3543 lpfc_bsg_dma_page_list_free(phba,
3544 &phba->mbox_ext_buf_ctx.ext_dmabuf_list);
3545 lpfc_bsg_dma_page_free(phba, phba->mbox_ext_buf_ctx.mbx_dmabuf);
3546 /* multi-buffer write mailbox command pass-through complete */
3547 memset((char *)&phba->mbox_ext_buf_ctx, 0,
3548 sizeof(struct lpfc_mbox_ext_buf_ctx));
3549 INIT_LIST_HEAD(&phba->mbox_ext_buf_ctx.ext_dmabuf_list);
3550
3551 return;
3552 }
3553
3554 /**
3555 * lpfc_bsg_issue_mbox_ext_handle_job - job handler for multi-buffer mbox cmpl
3556 * @phba: Pointer to HBA context object.
3557 * @pmboxq: Pointer to mailbox command.
3558 *
3559 * This is routine handles BSG job for mailbox commands completions with
3560 * multiple external buffers.
3561 **/
3562 static struct bsg_job *
3563 lpfc_bsg_issue_mbox_ext_handle_job(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
3564 {
3565 struct bsg_job_data *dd_data;
3566 struct bsg_job *job;
3567 struct fc_bsg_reply *bsg_reply;
3568 uint8_t *pmb, *pmb_buf;
3569 unsigned long flags;
3570 uint32_t size;
3571 int rc = 0;
3572 struct lpfc_dmabuf *dmabuf;
3573 struct lpfc_sli_config_mbox *sli_cfg_mbx;
3574 uint8_t *pmbx;
3575
3576 dd_data = pmboxq->ctx_buf;
3577
3578 /* Determine if job has been aborted */
3579 spin_lock_irqsave(&phba->ct_ev_lock, flags);
3580 job = dd_data->set_job;
3581 if (job) {
3582 bsg_reply = job->reply;
3583 /* Prevent timeout handling from trying to abort job */
3584 job->dd_data = NULL;
3585 }
3586 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3587
3588 /*
3589 * The outgoing buffer is readily referred from the dma buffer,
3590 * just need to get header part from mailboxq structure.
3591 */
3592
3593 pmb = (uint8_t *)&pmboxq->u.mb;
3594 pmb_buf = (uint8_t *)dd_data->context_un.mbox.mb;
3595 /* Copy the byte swapped response mailbox back to the user */
3596 memcpy(pmb_buf, pmb, sizeof(MAILBOX_t));
3597 /* if there is any non-embedded extended data copy that too */
3598 dmabuf = phba->mbox_ext_buf_ctx.mbx_dmabuf;
3599 sli_cfg_mbx = (struct lpfc_sli_config_mbox *)dmabuf->virt;
3600 if (!bsg_bf_get(lpfc_mbox_hdr_emb,
3601 &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr)) {
3602 pmbx = (uint8_t *)dmabuf->virt;
3603 /* byte swap the extended data following the mailbox command */
3604 lpfc_sli_pcimem_bcopy(&pmbx[sizeof(MAILBOX_t)],
3605 &pmbx[sizeof(MAILBOX_t)],
3606 sli_cfg_mbx->un.sli_config_emb0_subsys.mse[0].buf_len);
3607 }
3608
3609 /* Complete the job if the job is still active */
3610
3611 if (job) {
3612 size = job->reply_payload.payload_len;
3613 bsg_reply->reply_payload_rcv_len =
3614 sg_copy_from_buffer(job->reply_payload.sg_list,
3615 job->reply_payload.sg_cnt,
3616 pmb_buf, size);
3617
3618 /* result for successful */
3619 bsg_reply->result = 0;
3620
3621 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3622 "2937 SLI_CONFIG ext-buffer mailbox command "
3623 "(x%x/x%x) complete bsg job done, bsize:%d\n",
3624 phba->mbox_ext_buf_ctx.nembType,
3625 phba->mbox_ext_buf_ctx.mboxType, size);
3626 lpfc_idiag_mbxacc_dump_bsg_mbox(phba,
3627 phba->mbox_ext_buf_ctx.nembType,
3628 phba->mbox_ext_buf_ctx.mboxType,
3629 dma_ebuf, sta_pos_addr,
3630 phba->mbox_ext_buf_ctx.mbx_dmabuf, 0);
3631 } else {
3632 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3633 "2938 SLI_CONFIG ext-buffer mailbox "
3634 "command (x%x/x%x) failure, rc:x%x\n",
3635 phba->mbox_ext_buf_ctx.nembType,
3636 phba->mbox_ext_buf_ctx.mboxType, rc);
3637 }
3638
3639
3640 /* state change */
3641 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_DONE;
3642 kfree(dd_data);
3643 return job;
3644 }
3645
3646 /**
3647 * lpfc_bsg_issue_read_mbox_ext_cmpl - compl handler for multi-buffer read mbox
3648 * @phba: Pointer to HBA context object.
3649 * @pmboxq: Pointer to mailbox command.
3650 *
3651 * This is completion handler function for mailbox read commands with multiple
3652 * external buffers.
3653 **/
3654 static void
3655 lpfc_bsg_issue_read_mbox_ext_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
3656 {
3657 struct bsg_job *job;
3658 struct fc_bsg_reply *bsg_reply;
3659
3660 job = lpfc_bsg_issue_mbox_ext_handle_job(phba, pmboxq);
3661
3662 /* handle the BSG job with mailbox command */
3663 if (!job)
3664 pmboxq->u.mb.mbxStatus = MBXERR_ERROR;
3665
3666 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3667 "2939 SLI_CONFIG ext-buffer rd mailbox command "
3668 "complete, ctxState:x%x, mbxStatus:x%x\n",
3669 phba->mbox_ext_buf_ctx.state, pmboxq->u.mb.mbxStatus);
3670
3671 if (pmboxq->u.mb.mbxStatus || phba->mbox_ext_buf_ctx.numBuf == 1)
3672 lpfc_bsg_mbox_ext_session_reset(phba);
3673
3674 /* free base driver mailbox structure memory */
3675 mempool_free(pmboxq, phba->mbox_mem_pool);
3676
3677 /* if the job is still active, call job done */
3678 if (job) {
3679 bsg_reply = job->reply;
3680 bsg_job_done(job, bsg_reply->result,
3681 bsg_reply->reply_payload_rcv_len);
3682 }
3683 return;
3684 }
3685
3686 /**
3687 * lpfc_bsg_issue_write_mbox_ext_cmpl - cmpl handler for multi-buffer write mbox
3688 * @phba: Pointer to HBA context object.
3689 * @pmboxq: Pointer to mailbox command.
3690 *
3691 * This is completion handler function for mailbox write commands with multiple
3692 * external buffers.
3693 **/
3694 static void
3695 lpfc_bsg_issue_write_mbox_ext_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
3696 {
3697 struct bsg_job *job;
3698 struct fc_bsg_reply *bsg_reply;
3699
3700 job = lpfc_bsg_issue_mbox_ext_handle_job(phba, pmboxq);
3701
3702 /* handle the BSG job with the mailbox command */
3703 if (!job)
3704 pmboxq->u.mb.mbxStatus = MBXERR_ERROR;
3705
3706 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3707 "2940 SLI_CONFIG ext-buffer wr mailbox command "
3708 "complete, ctxState:x%x, mbxStatus:x%x\n",
3709 phba->mbox_ext_buf_ctx.state, pmboxq->u.mb.mbxStatus);
3710
3711 /* free all memory, including dma buffers */
3712 mempool_free(pmboxq, phba->mbox_mem_pool);
3713 lpfc_bsg_mbox_ext_session_reset(phba);
3714
3715 /* if the job is still active, call job done */
3716 if (job) {
3717 bsg_reply = job->reply;
3718 bsg_job_done(job, bsg_reply->result,
3719 bsg_reply->reply_payload_rcv_len);
3720 }
3721
3722 return;
3723 }
3724
3725 static void
3726 lpfc_bsg_sli_cfg_dma_desc_setup(struct lpfc_hba *phba, enum nemb_type nemb_tp,
3727 uint32_t index, struct lpfc_dmabuf *mbx_dmabuf,
3728 struct lpfc_dmabuf *ext_dmabuf)
3729 {
3730 struct lpfc_sli_config_mbox *sli_cfg_mbx;
3731
3732 /* pointer to the start of mailbox command */
3733 sli_cfg_mbx = (struct lpfc_sli_config_mbox *)mbx_dmabuf->virt;
3734
3735 if (nemb_tp == nemb_mse) {
3736 if (index == 0) {
3737 sli_cfg_mbx->un.sli_config_emb0_subsys.
3738 mse[index].pa_hi =
3739 putPaddrHigh(mbx_dmabuf->phys +
3740 sizeof(MAILBOX_t));
3741 sli_cfg_mbx->un.sli_config_emb0_subsys.
3742 mse[index].pa_lo =
3743 putPaddrLow(mbx_dmabuf->phys +
3744 sizeof(MAILBOX_t));
3745 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3746 "2943 SLI_CONFIG(mse)[%d], "
3747 "bufLen:%d, addrHi:x%x, addrLo:x%x\n",
3748 index,
3749 sli_cfg_mbx->un.sli_config_emb0_subsys.
3750 mse[index].buf_len,
3751 sli_cfg_mbx->un.sli_config_emb0_subsys.
3752 mse[index].pa_hi,
3753 sli_cfg_mbx->un.sli_config_emb0_subsys.
3754 mse[index].pa_lo);
3755 } else {
3756 sli_cfg_mbx->un.sli_config_emb0_subsys.
3757 mse[index].pa_hi =
3758 putPaddrHigh(ext_dmabuf->phys);
3759 sli_cfg_mbx->un.sli_config_emb0_subsys.
3760 mse[index].pa_lo =
3761 putPaddrLow(ext_dmabuf->phys);
3762 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3763 "2944 SLI_CONFIG(mse)[%d], "
3764 "bufLen:%d, addrHi:x%x, addrLo:x%x\n",
3765 index,
3766 sli_cfg_mbx->un.sli_config_emb0_subsys.
3767 mse[index].buf_len,
3768 sli_cfg_mbx->un.sli_config_emb0_subsys.
3769 mse[index].pa_hi,
3770 sli_cfg_mbx->un.sli_config_emb0_subsys.
3771 mse[index].pa_lo);
3772 }
3773 } else {
3774 if (index == 0) {
3775 sli_cfg_mbx->un.sli_config_emb1_subsys.
3776 hbd[index].pa_hi =
3777 putPaddrHigh(mbx_dmabuf->phys +
3778 sizeof(MAILBOX_t));
3779 sli_cfg_mbx->un.sli_config_emb1_subsys.
3780 hbd[index].pa_lo =
3781 putPaddrLow(mbx_dmabuf->phys +
3782 sizeof(MAILBOX_t));
3783 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3784 "3007 SLI_CONFIG(hbd)[%d], "
3785 "bufLen:%d, addrHi:x%x, addrLo:x%x\n",
3786 index,
3787 bsg_bf_get(lpfc_mbox_sli_config_ecmn_hbd_len,
3788 &sli_cfg_mbx->un.
3789 sli_config_emb1_subsys.hbd[index]),
3790 sli_cfg_mbx->un.sli_config_emb1_subsys.
3791 hbd[index].pa_hi,
3792 sli_cfg_mbx->un.sli_config_emb1_subsys.
3793 hbd[index].pa_lo);
3794
3795 } else {
3796 sli_cfg_mbx->un.sli_config_emb1_subsys.
3797 hbd[index].pa_hi =
3798 putPaddrHigh(ext_dmabuf->phys);
3799 sli_cfg_mbx->un.sli_config_emb1_subsys.
3800 hbd[index].pa_lo =
3801 putPaddrLow(ext_dmabuf->phys);
3802 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3803 "3008 SLI_CONFIG(hbd)[%d], "
3804 "bufLen:%d, addrHi:x%x, addrLo:x%x\n",
3805 index,
3806 bsg_bf_get(lpfc_mbox_sli_config_ecmn_hbd_len,
3807 &sli_cfg_mbx->un.
3808 sli_config_emb1_subsys.hbd[index]),
3809 sli_cfg_mbx->un.sli_config_emb1_subsys.
3810 hbd[index].pa_hi,
3811 sli_cfg_mbx->un.sli_config_emb1_subsys.
3812 hbd[index].pa_lo);
3813 }
3814 }
3815 return;
3816 }
3817
3818 /**
3819 * lpfc_bsg_sli_cfg_mse_read_cmd_ext - sli_config non-embedded mailbox cmd read
3820 * @phba: Pointer to HBA context object.
3821 * @mb: Pointer to a BSG mailbox object.
3822 * @nemb_tp: Enumerate of non-embedded mailbox command type.
3823 * @dmabuff: Pointer to a DMA buffer descriptor.
3824 *
3825 * This routine performs SLI_CONFIG (0x9B) read mailbox command operation with
3826 * non-embedded external bufffers.
3827 **/
3828 static int
3829 lpfc_bsg_sli_cfg_read_cmd_ext(struct lpfc_hba *phba, struct bsg_job *job,
3830 enum nemb_type nemb_tp,
3831 struct lpfc_dmabuf *dmabuf)
3832 {
3833 struct fc_bsg_request *bsg_request = job->request;
3834 struct lpfc_sli_config_mbox *sli_cfg_mbx;
3835 struct dfc_mbox_req *mbox_req;
3836 struct lpfc_dmabuf *curr_dmabuf, *next_dmabuf;
3837 uint32_t ext_buf_cnt, ext_buf_index;
3838 struct lpfc_dmabuf *ext_dmabuf = NULL;
3839 struct bsg_job_data *dd_data = NULL;
3840 LPFC_MBOXQ_t *pmboxq = NULL;
3841 MAILBOX_t *pmb;
3842 uint8_t *pmbx;
3843 int rc, i;
3844
3845 mbox_req =
3846 (struct dfc_mbox_req *)bsg_request->rqst_data.h_vendor.vendor_cmd;
3847
3848 /* pointer to the start of mailbox command */
3849 sli_cfg_mbx = (struct lpfc_sli_config_mbox *)dmabuf->virt;
3850
3851 if (nemb_tp == nemb_mse) {
3852 ext_buf_cnt = bsg_bf_get(lpfc_mbox_hdr_mse_cnt,
3853 &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr);
3854 if (ext_buf_cnt > LPFC_MBX_SLI_CONFIG_MAX_MSE) {
3855 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3856 "2945 Handled SLI_CONFIG(mse) rd, "
3857 "ext_buf_cnt(%d) out of range(%d)\n",
3858 ext_buf_cnt,
3859 LPFC_MBX_SLI_CONFIG_MAX_MSE);
3860 rc = -ERANGE;
3861 goto job_error;
3862 }
3863 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3864 "2941 Handled SLI_CONFIG(mse) rd, "
3865 "ext_buf_cnt:%d\n", ext_buf_cnt);
3866 } else {
3867 /* sanity check on interface type for support */
3868 if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
3869 LPFC_SLI_INTF_IF_TYPE_2) {
3870 rc = -ENODEV;
3871 goto job_error;
3872 }
3873 /* nemb_tp == nemb_hbd */
3874 ext_buf_cnt = sli_cfg_mbx->un.sli_config_emb1_subsys.hbd_count;
3875 if (ext_buf_cnt > LPFC_MBX_SLI_CONFIG_MAX_HBD) {
3876 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3877 "2946 Handled SLI_CONFIG(hbd) rd, "
3878 "ext_buf_cnt(%d) out of range(%d)\n",
3879 ext_buf_cnt,
3880 LPFC_MBX_SLI_CONFIG_MAX_HBD);
3881 rc = -ERANGE;
3882 goto job_error;
3883 }
3884 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3885 "2942 Handled SLI_CONFIG(hbd) rd, "
3886 "ext_buf_cnt:%d\n", ext_buf_cnt);
3887 }
3888
3889 /* before dma descriptor setup */
3890 lpfc_idiag_mbxacc_dump_bsg_mbox(phba, nemb_tp, mbox_rd, dma_mbox,
3891 sta_pre_addr, dmabuf, ext_buf_cnt);
3892
3893 /* reject non-embedded mailbox command with none external buffer */
3894 if (ext_buf_cnt == 0) {
3895 rc = -EPERM;
3896 goto job_error;
3897 } else if (ext_buf_cnt > 1) {
3898 /* additional external read buffers */
3899 for (i = 1; i < ext_buf_cnt; i++) {
3900 ext_dmabuf = lpfc_bsg_dma_page_alloc(phba);
3901 if (!ext_dmabuf) {
3902 rc = -ENOMEM;
3903 goto job_error;
3904 }
3905 list_add_tail(&ext_dmabuf->list,
3906 &phba->mbox_ext_buf_ctx.ext_dmabuf_list);
3907 }
3908 }
3909
3910 /* bsg tracking structure */
3911 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
3912 if (!dd_data) {
3913 rc = -ENOMEM;
3914 goto job_error;
3915 }
3916
3917 /* mailbox command structure for base driver */
3918 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3919 if (!pmboxq) {
3920 rc = -ENOMEM;
3921 goto job_error;
3922 }
3923 memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
3924
3925 /* for the first external buffer */
3926 lpfc_bsg_sli_cfg_dma_desc_setup(phba, nemb_tp, 0, dmabuf, dmabuf);
3927
3928 /* for the rest of external buffer descriptors if any */
3929 if (ext_buf_cnt > 1) {
3930 ext_buf_index = 1;
3931 list_for_each_entry_safe(curr_dmabuf, next_dmabuf,
3932 &phba->mbox_ext_buf_ctx.ext_dmabuf_list, list) {
3933 lpfc_bsg_sli_cfg_dma_desc_setup(phba, nemb_tp,
3934 ext_buf_index, dmabuf,
3935 curr_dmabuf);
3936 ext_buf_index++;
3937 }
3938 }
3939
3940 /* after dma descriptor setup */
3941 lpfc_idiag_mbxacc_dump_bsg_mbox(phba, nemb_tp, mbox_rd, dma_mbox,
3942 sta_pos_addr, dmabuf, ext_buf_cnt);
3943
3944 /* construct base driver mbox command */
3945 pmb = &pmboxq->u.mb;
3946 pmbx = (uint8_t *)dmabuf->virt;
3947 memcpy(pmb, pmbx, sizeof(*pmb));
3948 pmb->mbxOwner = OWN_HOST;
3949 pmboxq->vport = phba->pport;
3950
3951 /* multi-buffer handling context */
3952 phba->mbox_ext_buf_ctx.nembType = nemb_tp;
3953 phba->mbox_ext_buf_ctx.mboxType = mbox_rd;
3954 phba->mbox_ext_buf_ctx.numBuf = ext_buf_cnt;
3955 phba->mbox_ext_buf_ctx.mbxTag = mbox_req->extMboxTag;
3956 phba->mbox_ext_buf_ctx.seqNum = mbox_req->extSeqNum;
3957 phba->mbox_ext_buf_ctx.mbx_dmabuf = dmabuf;
3958
3959 /* callback for multi-buffer read mailbox command */
3960 pmboxq->mbox_cmpl = lpfc_bsg_issue_read_mbox_ext_cmpl;
3961
3962 /* context fields to callback function */
3963 pmboxq->ctx_buf = dd_data;
3964 dd_data->type = TYPE_MBOX;
3965 dd_data->set_job = job;
3966 dd_data->context_un.mbox.pmboxq = pmboxq;
3967 dd_data->context_un.mbox.mb = (MAILBOX_t *)pmbx;
3968 job->dd_data = dd_data;
3969
3970 /* state change */
3971 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_PORT;
3972
3973 /*
3974 * Non-embedded mailbox subcommand data gets byte swapped here because
3975 * the lower level driver code only does the first 64 mailbox words.
3976 */
3977 if ((!bsg_bf_get(lpfc_mbox_hdr_emb,
3978 &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr)) &&
3979 (nemb_tp == nemb_mse))
3980 lpfc_sli_pcimem_bcopy(&pmbx[sizeof(MAILBOX_t)],
3981 &pmbx[sizeof(MAILBOX_t)],
3982 sli_cfg_mbx->un.sli_config_emb0_subsys.
3983 mse[0].buf_len);
3984
3985 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
3986 if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY)) {
3987 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3988 "2947 Issued SLI_CONFIG ext-buffer "
3989 "mailbox command, rc:x%x\n", rc);
3990 return SLI_CONFIG_HANDLED;
3991 }
3992 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3993 "2948 Failed to issue SLI_CONFIG ext-buffer "
3994 "mailbox command, rc:x%x\n", rc);
3995 rc = -EPIPE;
3996
3997 job_error:
3998 if (pmboxq)
3999 mempool_free(pmboxq, phba->mbox_mem_pool);
4000 lpfc_bsg_dma_page_list_free(phba,
4001 &phba->mbox_ext_buf_ctx.ext_dmabuf_list);
4002 kfree(dd_data);
4003 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_IDLE;
4004 return rc;
4005 }
4006
4007 /**
4008 * lpfc_bsg_sli_cfg_write_cmd_ext - sli_config non-embedded mailbox cmd write
4009 * @phba: Pointer to HBA context object.
4010 * @mb: Pointer to a BSG mailbox object.
4011 * @dmabuff: Pointer to a DMA buffer descriptor.
4012 *
4013 * This routine performs SLI_CONFIG (0x9B) write mailbox command operation with
4014 * non-embedded external bufffers.
4015 **/
4016 static int
4017 lpfc_bsg_sli_cfg_write_cmd_ext(struct lpfc_hba *phba, struct bsg_job *job,
4018 enum nemb_type nemb_tp,
4019 struct lpfc_dmabuf *dmabuf)
4020 {
4021 struct fc_bsg_request *bsg_request = job->request;
4022 struct fc_bsg_reply *bsg_reply = job->reply;
4023 struct dfc_mbox_req *mbox_req;
4024 struct lpfc_sli_config_mbox *sli_cfg_mbx;
4025 uint32_t ext_buf_cnt;
4026 struct bsg_job_data *dd_data = NULL;
4027 LPFC_MBOXQ_t *pmboxq = NULL;
4028 MAILBOX_t *pmb;
4029 uint8_t *mbx;
4030 int rc = SLI_CONFIG_NOT_HANDLED, i;
4031
4032 mbox_req =
4033 (struct dfc_mbox_req *)bsg_request->rqst_data.h_vendor.vendor_cmd;
4034
4035 /* pointer to the start of mailbox command */
4036 sli_cfg_mbx = (struct lpfc_sli_config_mbox *)dmabuf->virt;
4037
4038 if (nemb_tp == nemb_mse) {
4039 ext_buf_cnt = bsg_bf_get(lpfc_mbox_hdr_mse_cnt,
4040 &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr);
4041 if (ext_buf_cnt > LPFC_MBX_SLI_CONFIG_MAX_MSE) {
4042 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4043 "2953 Failed SLI_CONFIG(mse) wr, "
4044 "ext_buf_cnt(%d) out of range(%d)\n",
4045 ext_buf_cnt,
4046 LPFC_MBX_SLI_CONFIG_MAX_MSE);
4047 return -ERANGE;
4048 }
4049 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4050 "2949 Handled SLI_CONFIG(mse) wr, "
4051 "ext_buf_cnt:%d\n", ext_buf_cnt);
4052 } else {
4053 /* sanity check on interface type for support */
4054 if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
4055 LPFC_SLI_INTF_IF_TYPE_2)
4056 return -ENODEV;
4057 /* nemb_tp == nemb_hbd */
4058 ext_buf_cnt = sli_cfg_mbx->un.sli_config_emb1_subsys.hbd_count;
4059 if (ext_buf_cnt > LPFC_MBX_SLI_CONFIG_MAX_HBD) {
4060 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4061 "2954 Failed SLI_CONFIG(hbd) wr, "
4062 "ext_buf_cnt(%d) out of range(%d)\n",
4063 ext_buf_cnt,
4064 LPFC_MBX_SLI_CONFIG_MAX_HBD);
4065 return -ERANGE;
4066 }
4067 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4068 "2950 Handled SLI_CONFIG(hbd) wr, "
4069 "ext_buf_cnt:%d\n", ext_buf_cnt);
4070 }
4071
4072 /* before dma buffer descriptor setup */
4073 lpfc_idiag_mbxacc_dump_bsg_mbox(phba, nemb_tp, mbox_wr, dma_mbox,
4074 sta_pre_addr, dmabuf, ext_buf_cnt);
4075
4076 if (ext_buf_cnt == 0)
4077 return -EPERM;
4078
4079 /* for the first external buffer */
4080 lpfc_bsg_sli_cfg_dma_desc_setup(phba, nemb_tp, 0, dmabuf, dmabuf);
4081
4082 /* after dma descriptor setup */
4083 lpfc_idiag_mbxacc_dump_bsg_mbox(phba, nemb_tp, mbox_wr, dma_mbox,
4084 sta_pos_addr, dmabuf, ext_buf_cnt);
4085
4086 /* log for looking forward */
4087 for (i = 1; i < ext_buf_cnt; i++) {
4088 if (nemb_tp == nemb_mse)
4089 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4090 "2951 SLI_CONFIG(mse), buf[%d]-length:%d\n",
4091 i, sli_cfg_mbx->un.sli_config_emb0_subsys.
4092 mse[i].buf_len);
4093 else
4094 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4095 "2952 SLI_CONFIG(hbd), buf[%d]-length:%d\n",
4096 i, bsg_bf_get(lpfc_mbox_sli_config_ecmn_hbd_len,
4097 &sli_cfg_mbx->un.sli_config_emb1_subsys.
4098 hbd[i]));
4099 }
4100
4101 /* multi-buffer handling context */
4102 phba->mbox_ext_buf_ctx.nembType = nemb_tp;
4103 phba->mbox_ext_buf_ctx.mboxType = mbox_wr;
4104 phba->mbox_ext_buf_ctx.numBuf = ext_buf_cnt;
4105 phba->mbox_ext_buf_ctx.mbxTag = mbox_req->extMboxTag;
4106 phba->mbox_ext_buf_ctx.seqNum = mbox_req->extSeqNum;
4107 phba->mbox_ext_buf_ctx.mbx_dmabuf = dmabuf;
4108
4109 if (ext_buf_cnt == 1) {
4110 /* bsg tracking structure */
4111 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
4112 if (!dd_data) {
4113 rc = -ENOMEM;
4114 goto job_error;
4115 }
4116
4117 /* mailbox command structure for base driver */
4118 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4119 if (!pmboxq) {
4120 rc = -ENOMEM;
4121 goto job_error;
4122 }
4123 memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
4124 pmb = &pmboxq->u.mb;
4125 mbx = (uint8_t *)dmabuf->virt;
4126 memcpy(pmb, mbx, sizeof(*pmb));
4127 pmb->mbxOwner = OWN_HOST;
4128 pmboxq->vport = phba->pport;
4129
4130 /* callback for multi-buffer read mailbox command */
4131 pmboxq->mbox_cmpl = lpfc_bsg_issue_write_mbox_ext_cmpl;
4132
4133 /* context fields to callback function */
4134 pmboxq->ctx_buf = dd_data;
4135 dd_data->type = TYPE_MBOX;
4136 dd_data->set_job = job;
4137 dd_data->context_un.mbox.pmboxq = pmboxq;
4138 dd_data->context_un.mbox.mb = (MAILBOX_t *)mbx;
4139 job->dd_data = dd_data;
4140
4141 /* state change */
4142
4143 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_PORT;
4144 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
4145 if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY)) {
4146 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4147 "2955 Issued SLI_CONFIG ext-buffer "
4148 "mailbox command, rc:x%x\n", rc);
4149 return SLI_CONFIG_HANDLED;
4150 }
4151 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4152 "2956 Failed to issue SLI_CONFIG ext-buffer "
4153 "mailbox command, rc:x%x\n", rc);
4154 rc = -EPIPE;
4155 goto job_error;
4156 }
4157
4158 /* wait for additoinal external buffers */
4159
4160 bsg_reply->result = 0;
4161 bsg_job_done(job, bsg_reply->result,
4162 bsg_reply->reply_payload_rcv_len);
4163 return SLI_CONFIG_HANDLED;
4164
4165 job_error:
4166 if (pmboxq)
4167 mempool_free(pmboxq, phba->mbox_mem_pool);
4168 kfree(dd_data);
4169
4170 return rc;
4171 }
4172
4173 /**
4174 * lpfc_bsg_handle_sli_cfg_mbox - handle sli-cfg mailbox cmd with ext buffer
4175 * @phba: Pointer to HBA context object.
4176 * @mb: Pointer to a BSG mailbox object.
4177 * @dmabuff: Pointer to a DMA buffer descriptor.
4178 *
4179 * This routine handles SLI_CONFIG (0x9B) mailbox command with non-embedded
4180 * external bufffers, including both 0x9B with non-embedded MSEs and 0x9B
4181 * with embedded sussystem 0x1 and opcodes with external HBDs.
4182 **/
4183 static int
4184 lpfc_bsg_handle_sli_cfg_mbox(struct lpfc_hba *phba, struct bsg_job *job,
4185 struct lpfc_dmabuf *dmabuf)
4186 {
4187 struct lpfc_sli_config_mbox *sli_cfg_mbx;
4188 uint32_t subsys;
4189 uint32_t opcode;
4190 int rc = SLI_CONFIG_NOT_HANDLED;
4191
4192 /* state change on new multi-buffer pass-through mailbox command */
4193 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_HOST;
4194
4195 sli_cfg_mbx = (struct lpfc_sli_config_mbox *)dmabuf->virt;
4196
4197 if (!bsg_bf_get(lpfc_mbox_hdr_emb,
4198 &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr)) {
4199 subsys = bsg_bf_get(lpfc_emb0_subcmnd_subsys,
4200 &sli_cfg_mbx->un.sli_config_emb0_subsys);
4201 opcode = bsg_bf_get(lpfc_emb0_subcmnd_opcode,
4202 &sli_cfg_mbx->un.sli_config_emb0_subsys);
4203 if (subsys == SLI_CONFIG_SUBSYS_FCOE) {
4204 switch (opcode) {
4205 case FCOE_OPCODE_READ_FCF:
4206 case FCOE_OPCODE_GET_DPORT_RESULTS:
4207 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4208 "2957 Handled SLI_CONFIG "
4209 "subsys_fcoe, opcode:x%x\n",
4210 opcode);
4211 rc = lpfc_bsg_sli_cfg_read_cmd_ext(phba, job,
4212 nemb_mse, dmabuf);
4213 break;
4214 case FCOE_OPCODE_ADD_FCF:
4215 case FCOE_OPCODE_SET_DPORT_MODE:
4216 case LPFC_MBOX_OPCODE_FCOE_LINK_DIAG_STATE:
4217 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4218 "2958 Handled SLI_CONFIG "
4219 "subsys_fcoe, opcode:x%x\n",
4220 opcode);
4221 rc = lpfc_bsg_sli_cfg_write_cmd_ext(phba, job,
4222 nemb_mse, dmabuf);
4223 break;
4224 default:
4225 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4226 "2959 Reject SLI_CONFIG "
4227 "subsys_fcoe, opcode:x%x\n",
4228 opcode);
4229 rc = -EPERM;
4230 break;
4231 }
4232 } else if (subsys == SLI_CONFIG_SUBSYS_COMN) {
4233 switch (opcode) {
4234 case COMN_OPCODE_GET_CNTL_ADDL_ATTRIBUTES:
4235 case COMN_OPCODE_GET_CNTL_ATTRIBUTES:
4236 case COMN_OPCODE_GET_PROFILE_CONFIG:
4237 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4238 "3106 Handled SLI_CONFIG "
4239 "subsys_comn, opcode:x%x\n",
4240 opcode);
4241 rc = lpfc_bsg_sli_cfg_read_cmd_ext(phba, job,
4242 nemb_mse, dmabuf);
4243 break;
4244 default:
4245 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4246 "3107 Reject SLI_CONFIG "
4247 "subsys_comn, opcode:x%x\n",
4248 opcode);
4249 rc = -EPERM;
4250 break;
4251 }
4252 } else {
4253 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4254 "2977 Reject SLI_CONFIG "
4255 "subsys:x%d, opcode:x%x\n",
4256 subsys, opcode);
4257 rc = -EPERM;
4258 }
4259 } else {
4260 subsys = bsg_bf_get(lpfc_emb1_subcmnd_subsys,
4261 &sli_cfg_mbx->un.sli_config_emb1_subsys);
4262 opcode = bsg_bf_get(lpfc_emb1_subcmnd_opcode,
4263 &sli_cfg_mbx->un.sli_config_emb1_subsys);
4264 if (subsys == SLI_CONFIG_SUBSYS_COMN) {
4265 switch (opcode) {
4266 case COMN_OPCODE_READ_OBJECT:
4267 case COMN_OPCODE_READ_OBJECT_LIST:
4268 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4269 "2960 Handled SLI_CONFIG "
4270 "subsys_comn, opcode:x%x\n",
4271 opcode);
4272 rc = lpfc_bsg_sli_cfg_read_cmd_ext(phba, job,
4273 nemb_hbd, dmabuf);
4274 break;
4275 case COMN_OPCODE_WRITE_OBJECT:
4276 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4277 "2961 Handled SLI_CONFIG "
4278 "subsys_comn, opcode:x%x\n",
4279 opcode);
4280 rc = lpfc_bsg_sli_cfg_write_cmd_ext(phba, job,
4281 nemb_hbd, dmabuf);
4282 break;
4283 default:
4284 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4285 "2962 Not handled SLI_CONFIG "
4286 "subsys_comn, opcode:x%x\n",
4287 opcode);
4288 rc = SLI_CONFIG_NOT_HANDLED;
4289 break;
4290 }
4291 } else {
4292 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4293 "2978 Not handled SLI_CONFIG "
4294 "subsys:x%d, opcode:x%x\n",
4295 subsys, opcode);
4296 rc = SLI_CONFIG_NOT_HANDLED;
4297 }
4298 }
4299
4300 /* state reset on not handled new multi-buffer mailbox command */
4301 if (rc != SLI_CONFIG_HANDLED)
4302 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_IDLE;
4303
4304 return rc;
4305 }
4306
4307 /**
4308 * lpfc_bsg_mbox_ext_abort_req - request to abort mbox command with ext buffers
4309 * @phba: Pointer to HBA context object.
4310 *
4311 * This routine is for requesting to abort a pass-through mailbox command with
4312 * multiple external buffers due to error condition.
4313 **/
4314 static void
4315 lpfc_bsg_mbox_ext_abort(struct lpfc_hba *phba)
4316 {
4317 if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_PORT)
4318 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_ABTS;
4319 else
4320 lpfc_bsg_mbox_ext_session_reset(phba);
4321 return;
4322 }
4323
4324 /**
4325 * lpfc_bsg_read_ebuf_get - get the next mailbox read external buffer
4326 * @phba: Pointer to HBA context object.
4327 * @dmabuf: Pointer to a DMA buffer descriptor.
4328 *
4329 * This routine extracts the next mailbox read external buffer back to
4330 * user space through BSG.
4331 **/
4332 static int
4333 lpfc_bsg_read_ebuf_get(struct lpfc_hba *phba, struct bsg_job *job)
4334 {
4335 struct fc_bsg_reply *bsg_reply = job->reply;
4336 struct lpfc_sli_config_mbox *sli_cfg_mbx;
4337 struct lpfc_dmabuf *dmabuf;
4338 uint8_t *pbuf;
4339 uint32_t size;
4340 uint32_t index;
4341
4342 index = phba->mbox_ext_buf_ctx.seqNum;
4343 phba->mbox_ext_buf_ctx.seqNum++;
4344
4345 sli_cfg_mbx = (struct lpfc_sli_config_mbox *)
4346 phba->mbox_ext_buf_ctx.mbx_dmabuf->virt;
4347
4348 if (phba->mbox_ext_buf_ctx.nembType == nemb_mse) {
4349 size = bsg_bf_get(lpfc_mbox_sli_config_mse_len,
4350 &sli_cfg_mbx->un.sli_config_emb0_subsys.mse[index]);
4351 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4352 "2963 SLI_CONFIG (mse) ext-buffer rd get "
4353 "buffer[%d], size:%d\n", index, size);
4354 } else {
4355 size = bsg_bf_get(lpfc_mbox_sli_config_ecmn_hbd_len,
4356 &sli_cfg_mbx->un.sli_config_emb1_subsys.hbd[index]);
4357 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4358 "2964 SLI_CONFIG (hbd) ext-buffer rd get "
4359 "buffer[%d], size:%d\n", index, size);
4360 }
4361 if (list_empty(&phba->mbox_ext_buf_ctx.ext_dmabuf_list))
4362 return -EPIPE;
4363 dmabuf = list_first_entry(&phba->mbox_ext_buf_ctx.ext_dmabuf_list,
4364 struct lpfc_dmabuf, list);
4365 list_del_init(&dmabuf->list);
4366
4367 /* after dma buffer descriptor setup */
4368 lpfc_idiag_mbxacc_dump_bsg_mbox(phba, phba->mbox_ext_buf_ctx.nembType,
4369 mbox_rd, dma_ebuf, sta_pos_addr,
4370 dmabuf, index);
4371
4372 pbuf = (uint8_t *)dmabuf->virt;
4373 bsg_reply->reply_payload_rcv_len =
4374 sg_copy_from_buffer(job->reply_payload.sg_list,
4375 job->reply_payload.sg_cnt,
4376 pbuf, size);
4377
4378 lpfc_bsg_dma_page_free(phba, dmabuf);
4379
4380 if (phba->mbox_ext_buf_ctx.seqNum == phba->mbox_ext_buf_ctx.numBuf) {
4381 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4382 "2965 SLI_CONFIG (hbd) ext-buffer rd mbox "
4383 "command session done\n");
4384 lpfc_bsg_mbox_ext_session_reset(phba);
4385 }
4386
4387 bsg_reply->result = 0;
4388 bsg_job_done(job, bsg_reply->result,
4389 bsg_reply->reply_payload_rcv_len);
4390
4391 return SLI_CONFIG_HANDLED;
4392 }
4393
4394 /**
4395 * lpfc_bsg_write_ebuf_set - set the next mailbox write external buffer
4396 * @phba: Pointer to HBA context object.
4397 * @dmabuf: Pointer to a DMA buffer descriptor.
4398 *
4399 * This routine sets up the next mailbox read external buffer obtained
4400 * from user space through BSG.
4401 **/
4402 static int
4403 lpfc_bsg_write_ebuf_set(struct lpfc_hba *phba, struct bsg_job *job,
4404 struct lpfc_dmabuf *dmabuf)
4405 {
4406 struct fc_bsg_reply *bsg_reply = job->reply;
4407 struct bsg_job_data *dd_data = NULL;
4408 LPFC_MBOXQ_t *pmboxq = NULL;
4409 MAILBOX_t *pmb;
4410 enum nemb_type nemb_tp;
4411 uint8_t *pbuf;
4412 uint32_t size;
4413 uint32_t index;
4414 int rc;
4415
4416 index = phba->mbox_ext_buf_ctx.seqNum;
4417 phba->mbox_ext_buf_ctx.seqNum++;
4418 nemb_tp = phba->mbox_ext_buf_ctx.nembType;
4419
4420 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
4421 if (!dd_data) {
4422 rc = -ENOMEM;
4423 goto job_error;
4424 }
4425
4426 pbuf = (uint8_t *)dmabuf->virt;
4427 size = job->request_payload.payload_len;
4428 sg_copy_to_buffer(job->request_payload.sg_list,
4429 job->request_payload.sg_cnt,
4430 pbuf, size);
4431
4432 if (phba->mbox_ext_buf_ctx.nembType == nemb_mse) {
4433 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4434 "2966 SLI_CONFIG (mse) ext-buffer wr set "
4435 "buffer[%d], size:%d\n",
4436 phba->mbox_ext_buf_ctx.seqNum, size);
4437
4438 } else {
4439 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4440 "2967 SLI_CONFIG (hbd) ext-buffer wr set "
4441 "buffer[%d], size:%d\n",
4442 phba->mbox_ext_buf_ctx.seqNum, size);
4443
4444 }
4445
4446 /* set up external buffer descriptor and add to external buffer list */
4447 lpfc_bsg_sli_cfg_dma_desc_setup(phba, nemb_tp, index,
4448 phba->mbox_ext_buf_ctx.mbx_dmabuf,
4449 dmabuf);
4450 list_add_tail(&dmabuf->list, &phba->mbox_ext_buf_ctx.ext_dmabuf_list);
4451
4452 /* after write dma buffer */
4453 lpfc_idiag_mbxacc_dump_bsg_mbox(phba, phba->mbox_ext_buf_ctx.nembType,
4454 mbox_wr, dma_ebuf, sta_pos_addr,
4455 dmabuf, index);
4456
4457 if (phba->mbox_ext_buf_ctx.seqNum == phba->mbox_ext_buf_ctx.numBuf) {
4458 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4459 "2968 SLI_CONFIG ext-buffer wr all %d "
4460 "ebuffers received\n",
4461 phba->mbox_ext_buf_ctx.numBuf);
4462 /* mailbox command structure for base driver */
4463 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4464 if (!pmboxq) {
4465 rc = -ENOMEM;
4466 goto job_error;
4467 }
4468 memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
4469 pbuf = (uint8_t *)phba->mbox_ext_buf_ctx.mbx_dmabuf->virt;
4470 pmb = &pmboxq->u.mb;
4471 memcpy(pmb, pbuf, sizeof(*pmb));
4472 pmb->mbxOwner = OWN_HOST;
4473 pmboxq->vport = phba->pport;
4474
4475 /* callback for multi-buffer write mailbox command */
4476 pmboxq->mbox_cmpl = lpfc_bsg_issue_write_mbox_ext_cmpl;
4477
4478 /* context fields to callback function */
4479 pmboxq->ctx_buf = dd_data;
4480 dd_data->type = TYPE_MBOX;
4481 dd_data->set_job = job;
4482 dd_data->context_un.mbox.pmboxq = pmboxq;
4483 dd_data->context_un.mbox.mb = (MAILBOX_t *)pbuf;
4484 job->dd_data = dd_data;
4485
4486 /* state change */
4487 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_PORT;
4488
4489 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
4490 if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY)) {
4491 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4492 "2969 Issued SLI_CONFIG ext-buffer "
4493 "mailbox command, rc:x%x\n", rc);
4494 return SLI_CONFIG_HANDLED;
4495 }
4496 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4497 "2970 Failed to issue SLI_CONFIG ext-buffer "
4498 "mailbox command, rc:x%x\n", rc);
4499 rc = -EPIPE;
4500 goto job_error;
4501 }
4502
4503 /* wait for additoinal external buffers */
4504 bsg_reply->result = 0;
4505 bsg_job_done(job, bsg_reply->result,
4506 bsg_reply->reply_payload_rcv_len);
4507 return SLI_CONFIG_HANDLED;
4508
4509 job_error:
4510 lpfc_bsg_dma_page_free(phba, dmabuf);
4511 kfree(dd_data);
4512
4513 return rc;
4514 }
4515
4516 /**
4517 * lpfc_bsg_handle_sli_cfg_ebuf - handle ext buffer with sli-cfg mailbox cmd
4518 * @phba: Pointer to HBA context object.
4519 * @mb: Pointer to a BSG mailbox object.
4520 * @dmabuff: Pointer to a DMA buffer descriptor.
4521 *
4522 * This routine handles the external buffer with SLI_CONFIG (0x9B) mailbox
4523 * command with multiple non-embedded external buffers.
4524 **/
4525 static int
4526 lpfc_bsg_handle_sli_cfg_ebuf(struct lpfc_hba *phba, struct bsg_job *job,
4527 struct lpfc_dmabuf *dmabuf)
4528 {
4529 int rc;
4530
4531 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4532 "2971 SLI_CONFIG buffer (type:x%x)\n",
4533 phba->mbox_ext_buf_ctx.mboxType);
4534
4535 if (phba->mbox_ext_buf_ctx.mboxType == mbox_rd) {
4536 if (phba->mbox_ext_buf_ctx.state != LPFC_BSG_MBOX_DONE) {
4537 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4538 "2972 SLI_CONFIG rd buffer state "
4539 "mismatch:x%x\n",
4540 phba->mbox_ext_buf_ctx.state);
4541 lpfc_bsg_mbox_ext_abort(phba);
4542 return -EPIPE;
4543 }
4544 rc = lpfc_bsg_read_ebuf_get(phba, job);
4545 if (rc == SLI_CONFIG_HANDLED)
4546 lpfc_bsg_dma_page_free(phba, dmabuf);
4547 } else { /* phba->mbox_ext_buf_ctx.mboxType == mbox_wr */
4548 if (phba->mbox_ext_buf_ctx.state != LPFC_BSG_MBOX_HOST) {
4549 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4550 "2973 SLI_CONFIG wr buffer state "
4551 "mismatch:x%x\n",
4552 phba->mbox_ext_buf_ctx.state);
4553 lpfc_bsg_mbox_ext_abort(phba);
4554 return -EPIPE;
4555 }
4556 rc = lpfc_bsg_write_ebuf_set(phba, job, dmabuf);
4557 }
4558 return rc;
4559 }
4560
4561 /**
4562 * lpfc_bsg_handle_sli_cfg_ext - handle sli-cfg mailbox with external buffer
4563 * @phba: Pointer to HBA context object.
4564 * @mb: Pointer to a BSG mailbox object.
4565 * @dmabuff: Pointer to a DMA buffer descriptor.
4566 *
4567 * This routine checkes and handles non-embedded multi-buffer SLI_CONFIG
4568 * (0x9B) mailbox commands and external buffers.
4569 **/
4570 static int
4571 lpfc_bsg_handle_sli_cfg_ext(struct lpfc_hba *phba, struct bsg_job *job,
4572 struct lpfc_dmabuf *dmabuf)
4573 {
4574 struct fc_bsg_request *bsg_request = job->request;
4575 struct dfc_mbox_req *mbox_req;
4576 int rc = SLI_CONFIG_NOT_HANDLED;
4577
4578 mbox_req =
4579 (struct dfc_mbox_req *)bsg_request->rqst_data.h_vendor.vendor_cmd;
4580
4581 /* mbox command with/without single external buffer */
4582 if (mbox_req->extMboxTag == 0 && mbox_req->extSeqNum == 0)
4583 return rc;
4584
4585 /* mbox command and first external buffer */
4586 if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_IDLE) {
4587 if (mbox_req->extSeqNum == 1) {
4588 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4589 "2974 SLI_CONFIG mailbox: tag:%d, "
4590 "seq:%d\n", mbox_req->extMboxTag,
4591 mbox_req->extSeqNum);
4592 rc = lpfc_bsg_handle_sli_cfg_mbox(phba, job, dmabuf);
4593 return rc;
4594 } else
4595 goto sli_cfg_ext_error;
4596 }
4597
4598 /*
4599 * handle additional external buffers
4600 */
4601
4602 /* check broken pipe conditions */
4603 if (mbox_req->extMboxTag != phba->mbox_ext_buf_ctx.mbxTag)
4604 goto sli_cfg_ext_error;
4605 if (mbox_req->extSeqNum > phba->mbox_ext_buf_ctx.numBuf)
4606 goto sli_cfg_ext_error;
4607 if (mbox_req->extSeqNum != phba->mbox_ext_buf_ctx.seqNum + 1)
4608 goto sli_cfg_ext_error;
4609
4610 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4611 "2975 SLI_CONFIG mailbox external buffer: "
4612 "extSta:x%x, tag:%d, seq:%d\n",
4613 phba->mbox_ext_buf_ctx.state, mbox_req->extMboxTag,
4614 mbox_req->extSeqNum);
4615 rc = lpfc_bsg_handle_sli_cfg_ebuf(phba, job, dmabuf);
4616 return rc;
4617
4618 sli_cfg_ext_error:
4619 /* all other cases, broken pipe */
4620 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4621 "2976 SLI_CONFIG mailbox broken pipe: "
4622 "ctxSta:x%x, ctxNumBuf:%d "
4623 "ctxTag:%d, ctxSeq:%d, tag:%d, seq:%d\n",
4624 phba->mbox_ext_buf_ctx.state,
4625 phba->mbox_ext_buf_ctx.numBuf,
4626 phba->mbox_ext_buf_ctx.mbxTag,
4627 phba->mbox_ext_buf_ctx.seqNum,
4628 mbox_req->extMboxTag, mbox_req->extSeqNum);
4629
4630 lpfc_bsg_mbox_ext_session_reset(phba);
4631
4632 return -EPIPE;
4633 }
4634
4635 /**
4636 * lpfc_bsg_issue_mbox - issues a mailbox command on behalf of an app
4637 * @phba: Pointer to HBA context object.
4638 * @mb: Pointer to a mailbox object.
4639 * @vport: Pointer to a vport object.
4640 *
4641 * Allocate a tracking object, mailbox command memory, get a mailbox
4642 * from the mailbox pool, copy the caller mailbox command.
4643 *
4644 * If offline and the sli is active we need to poll for the command (port is
4645 * being reset) and com-plete the job, otherwise issue the mailbox command and
4646 * let our completion handler finish the command.
4647 **/
4648 static int
4649 lpfc_bsg_issue_mbox(struct lpfc_hba *phba, struct bsg_job *job,
4650 struct lpfc_vport *vport)
4651 {
4652 struct fc_bsg_request *bsg_request = job->request;
4653 struct fc_bsg_reply *bsg_reply = job->reply;
4654 LPFC_MBOXQ_t *pmboxq = NULL; /* internal mailbox queue */
4655 MAILBOX_t *pmb; /* shortcut to the pmboxq mailbox */
4656 /* a 4k buffer to hold the mb and extended data from/to the bsg */
4657 uint8_t *pmbx = NULL;
4658 struct bsg_job_data *dd_data = NULL; /* bsg data tracking structure */
4659 struct lpfc_dmabuf *dmabuf = NULL;
4660 struct dfc_mbox_req *mbox_req;
4661 struct READ_EVENT_LOG_VAR *rdEventLog;
4662 uint32_t transmit_length, receive_length, mode;
4663 struct lpfc_mbx_sli4_config *sli4_config;
4664 struct lpfc_mbx_nembed_cmd *nembed_sge;
4665 struct ulp_bde64 *bde;
4666 uint8_t *ext = NULL;
4667 int rc = 0;
4668 uint8_t *from;
4669 uint32_t size;
4670
4671 /* in case no data is transferred */
4672 bsg_reply->reply_payload_rcv_len = 0;
4673
4674 /* sanity check to protect driver */
4675 if (job->reply_payload.payload_len > BSG_MBOX_SIZE ||
4676 job->request_payload.payload_len > BSG_MBOX_SIZE) {
4677 rc = -ERANGE;
4678 goto job_done;
4679 }
4680
4681 /*
4682 * Don't allow mailbox commands to be sent when blocked or when in
4683 * the middle of discovery
4684 */
4685 if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) {
4686 rc = -EAGAIN;
4687 goto job_done;
4688 }
4689
4690 mbox_req =
4691 (struct dfc_mbox_req *)bsg_request->rqst_data.h_vendor.vendor_cmd;
4692
4693 /* check if requested extended data lengths are valid */
4694 if ((mbox_req->inExtWLen > BSG_MBOX_SIZE/sizeof(uint32_t)) ||
4695 (mbox_req->outExtWLen > BSG_MBOX_SIZE/sizeof(uint32_t))) {
4696 rc = -ERANGE;
4697 goto job_done;
4698 }
4699
4700 dmabuf = lpfc_bsg_dma_page_alloc(phba);
4701 if (!dmabuf || !dmabuf->virt) {
4702 rc = -ENOMEM;
4703 goto job_done;
4704 }
4705
4706 /* Get the mailbox command or external buffer from BSG */
4707 pmbx = (uint8_t *)dmabuf->virt;
4708 size = job->request_payload.payload_len;
4709 sg_copy_to_buffer(job->request_payload.sg_list,
4710 job->request_payload.sg_cnt, pmbx, size);
4711
4712 /* Handle possible SLI_CONFIG with non-embedded payloads */
4713 if (phba->sli_rev == LPFC_SLI_REV4) {
4714 rc = lpfc_bsg_handle_sli_cfg_ext(phba, job, dmabuf);
4715 if (rc == SLI_CONFIG_HANDLED)
4716 goto job_cont;
4717 if (rc)
4718 goto job_done;
4719 /* SLI_CONFIG_NOT_HANDLED for other mailbox commands */
4720 }
4721
4722 rc = lpfc_bsg_check_cmd_access(phba, (MAILBOX_t *)pmbx, vport);
4723 if (rc != 0)
4724 goto job_done; /* must be negative */
4725
4726 /* allocate our bsg tracking structure */
4727 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
4728 if (!dd_data) {
4729 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
4730 "2727 Failed allocation of dd_data\n");
4731 rc = -ENOMEM;
4732 goto job_done;
4733 }
4734
4735 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4736 if (!pmboxq) {
4737 rc = -ENOMEM;
4738 goto job_done;
4739 }
4740 memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
4741
4742 pmb = &pmboxq->u.mb;
4743 memcpy(pmb, pmbx, sizeof(*pmb));
4744 pmb->mbxOwner = OWN_HOST;
4745 pmboxq->vport = vport;
4746
4747 /* If HBA encountered an error attention, allow only DUMP
4748 * or RESTART mailbox commands until the HBA is restarted.
4749 */
4750 if (phba->pport->stopped &&
4751 pmb->mbxCommand != MBX_DUMP_MEMORY &&
4752 pmb->mbxCommand != MBX_RESTART &&
4753 pmb->mbxCommand != MBX_WRITE_VPARMS &&
4754 pmb->mbxCommand != MBX_WRITE_WWN)
4755 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX,
4756 "2797 mbox: Issued mailbox cmd "
4757 "0x%x while in stopped state.\n",
4758 pmb->mbxCommand);
4759
4760 /* extended mailbox commands will need an extended buffer */
4761 if (mbox_req->inExtWLen || mbox_req->outExtWLen) {
4762 from = pmbx;
4763 ext = from + sizeof(MAILBOX_t);
4764 pmboxq->ctx_buf = ext;
4765 pmboxq->in_ext_byte_len =
4766 mbox_req->inExtWLen * sizeof(uint32_t);
4767 pmboxq->out_ext_byte_len =
4768 mbox_req->outExtWLen * sizeof(uint32_t);
4769 pmboxq->mbox_offset_word = mbox_req->mbOffset;
4770 }
4771
4772 /* biu diag will need a kernel buffer to transfer the data
4773 * allocate our own buffer and setup the mailbox command to
4774 * use ours
4775 */
4776 if (pmb->mbxCommand == MBX_RUN_BIU_DIAG64) {
4777 transmit_length = pmb->un.varWords[1];
4778 receive_length = pmb->un.varWords[4];
4779 /* transmit length cannot be greater than receive length or
4780 * mailbox extension size
4781 */
4782 if ((transmit_length > receive_length) ||
4783 (transmit_length > BSG_MBOX_SIZE - sizeof(MAILBOX_t))) {
4784 rc = -ERANGE;
4785 goto job_done;
4786 }
4787 pmb->un.varBIUdiag.un.s2.xmit_bde64.addrHigh =
4788 putPaddrHigh(dmabuf->phys + sizeof(MAILBOX_t));
4789 pmb->un.varBIUdiag.un.s2.xmit_bde64.addrLow =
4790 putPaddrLow(dmabuf->phys + sizeof(MAILBOX_t));
4791
4792 pmb->un.varBIUdiag.un.s2.rcv_bde64.addrHigh =
4793 putPaddrHigh(dmabuf->phys + sizeof(MAILBOX_t)
4794 + pmb->un.varBIUdiag.un.s2.xmit_bde64.tus.f.bdeSize);
4795 pmb->un.varBIUdiag.un.s2.rcv_bde64.addrLow =
4796 putPaddrLow(dmabuf->phys + sizeof(MAILBOX_t)
4797 + pmb->un.varBIUdiag.un.s2.xmit_bde64.tus.f.bdeSize);
4798 } else if (pmb->mbxCommand == MBX_READ_EVENT_LOG) {
4799 rdEventLog = &pmb->un.varRdEventLog;
4800 receive_length = rdEventLog->rcv_bde64.tus.f.bdeSize;
4801 mode = bf_get(lpfc_event_log, rdEventLog);
4802
4803 /* receive length cannot be greater than mailbox
4804 * extension size
4805 */
4806 if (receive_length > BSG_MBOX_SIZE - sizeof(MAILBOX_t)) {
4807 rc = -ERANGE;
4808 goto job_done;
4809 }
4810
4811 /* mode zero uses a bde like biu diags command */
4812 if (mode == 0) {
4813 pmb->un.varWords[3] = putPaddrLow(dmabuf->phys
4814 + sizeof(MAILBOX_t));
4815 pmb->un.varWords[4] = putPaddrHigh(dmabuf->phys
4816 + sizeof(MAILBOX_t));
4817 }
4818 } else if (phba->sli_rev == LPFC_SLI_REV4) {
4819 /* Let type 4 (well known data) through because the data is
4820 * returned in varwords[4-8]
4821 * otherwise check the recieve length and fetch the buffer addr
4822 */
4823 if ((pmb->mbxCommand == MBX_DUMP_MEMORY) &&
4824 (pmb->un.varDmp.type != DMP_WELL_KNOWN)) {
4825 /* rebuild the command for sli4 using our own buffers
4826 * like we do for biu diags
4827 */
4828 receive_length = pmb->un.varWords[2];
4829 /* receive length cannot be greater than mailbox
4830 * extension size
4831 */
4832 if (receive_length == 0) {
4833 rc = -ERANGE;
4834 goto job_done;
4835 }
4836 pmb->un.varWords[3] = putPaddrLow(dmabuf->phys
4837 + sizeof(MAILBOX_t));
4838 pmb->un.varWords[4] = putPaddrHigh(dmabuf->phys
4839 + sizeof(MAILBOX_t));
4840 } else if ((pmb->mbxCommand == MBX_UPDATE_CFG) &&
4841 pmb->un.varUpdateCfg.co) {
4842 bde = (struct ulp_bde64 *)&pmb->un.varWords[4];
4843
4844 /* bde size cannot be greater than mailbox ext size */
4845 if (bde->tus.f.bdeSize >
4846 BSG_MBOX_SIZE - sizeof(MAILBOX_t)) {
4847 rc = -ERANGE;
4848 goto job_done;
4849 }
4850 bde->addrHigh = putPaddrHigh(dmabuf->phys
4851 + sizeof(MAILBOX_t));
4852 bde->addrLow = putPaddrLow(dmabuf->phys
4853 + sizeof(MAILBOX_t));
4854 } else if (pmb->mbxCommand == MBX_SLI4_CONFIG) {
4855 /* Handling non-embedded SLI_CONFIG mailbox command */
4856 sli4_config = &pmboxq->u.mqe.un.sli4_config;
4857 if (!bf_get(lpfc_mbox_hdr_emb,
4858 &sli4_config->header.cfg_mhdr)) {
4859 /* rebuild the command for sli4 using our
4860 * own buffers like we do for biu diags
4861 */
4862 nembed_sge = (struct lpfc_mbx_nembed_cmd *)
4863 &pmb->un.varWords[0];
4864 receive_length = nembed_sge->sge[0].length;
4865
4866 /* receive length cannot be greater than
4867 * mailbox extension size
4868 */
4869 if ((receive_length == 0) ||
4870 (receive_length >
4871 BSG_MBOX_SIZE - sizeof(MAILBOX_t))) {
4872 rc = -ERANGE;
4873 goto job_done;
4874 }
4875
4876 nembed_sge->sge[0].pa_hi =
4877 putPaddrHigh(dmabuf->phys
4878 + sizeof(MAILBOX_t));
4879 nembed_sge->sge[0].pa_lo =
4880 putPaddrLow(dmabuf->phys
4881 + sizeof(MAILBOX_t));
4882 }
4883 }
4884 }
4885
4886 dd_data->context_un.mbox.dmabuffers = dmabuf;
4887
4888 /* setup wake call as IOCB callback */
4889 pmboxq->mbox_cmpl = lpfc_bsg_issue_mbox_cmpl;
4890
4891 /* setup context field to pass wait_queue pointer to wake function */
4892 pmboxq->ctx_ndlp = dd_data;
4893 dd_data->type = TYPE_MBOX;
4894 dd_data->set_job = job;
4895 dd_data->context_un.mbox.pmboxq = pmboxq;
4896 dd_data->context_un.mbox.mb = (MAILBOX_t *)pmbx;
4897 dd_data->context_un.mbox.ext = ext;
4898 dd_data->context_un.mbox.mbOffset = mbox_req->mbOffset;
4899 dd_data->context_un.mbox.inExtWLen = mbox_req->inExtWLen;
4900 dd_data->context_un.mbox.outExtWLen = mbox_req->outExtWLen;
4901 job->dd_data = dd_data;
4902
4903 if ((vport->fc_flag & FC_OFFLINE_MODE) ||
4904 (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE))) {
4905 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
4906 if (rc != MBX_SUCCESS) {
4907 rc = (rc == MBX_TIMEOUT) ? -ETIME : -ENODEV;
4908 goto job_done;
4909 }
4910
4911 /* job finished, copy the data */
4912 memcpy(pmbx, pmb, sizeof(*pmb));
4913 bsg_reply->reply_payload_rcv_len =
4914 sg_copy_from_buffer(job->reply_payload.sg_list,
4915 job->reply_payload.sg_cnt,
4916 pmbx, size);
4917 /* not waiting mbox already done */
4918 rc = 0;
4919 goto job_done;
4920 }
4921
4922 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
4923 if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY))
4924 return 1; /* job started */
4925
4926 job_done:
4927 /* common exit for error or job completed inline */
4928 if (pmboxq)
4929 mempool_free(pmboxq, phba->mbox_mem_pool);
4930 lpfc_bsg_dma_page_free(phba, dmabuf);
4931 kfree(dd_data);
4932
4933 job_cont:
4934 return rc;
4935 }
4936
4937 /**
4938 * lpfc_bsg_mbox_cmd - process an fc bsg LPFC_BSG_VENDOR_MBOX command
4939 * @job: MBOX fc_bsg_job for LPFC_BSG_VENDOR_MBOX.
4940 **/
4941 static int
4942 lpfc_bsg_mbox_cmd(struct bsg_job *job)
4943 {
4944 struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
4945 struct fc_bsg_request *bsg_request = job->request;
4946 struct fc_bsg_reply *bsg_reply = job->reply;
4947 struct lpfc_hba *phba = vport->phba;
4948 struct dfc_mbox_req *mbox_req;
4949 int rc = 0;
4950
4951 /* mix-and-match backward compatibility */
4952 bsg_reply->reply_payload_rcv_len = 0;
4953 if (job->request_len <
4954 sizeof(struct fc_bsg_request) + sizeof(struct dfc_mbox_req)) {
4955 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4956 "2737 Mix-and-match backward compatibility "
4957 "between MBOX_REQ old size:%d and "
4958 "new request size:%d\n",
4959 (int)(job->request_len -
4960 sizeof(struct fc_bsg_request)),
4961 (int)sizeof(struct dfc_mbox_req));
4962 mbox_req = (struct dfc_mbox_req *)
4963 bsg_request->rqst_data.h_vendor.vendor_cmd;
4964 mbox_req->extMboxTag = 0;
4965 mbox_req->extSeqNum = 0;
4966 }
4967
4968 rc = lpfc_bsg_issue_mbox(phba, job, vport);
4969
4970 if (rc == 0) {
4971 /* job done */
4972 bsg_reply->result = 0;
4973 job->dd_data = NULL;
4974 bsg_job_done(job, bsg_reply->result,
4975 bsg_reply->reply_payload_rcv_len);
4976 } else if (rc == 1)
4977 /* job submitted, will complete later*/
4978 rc = 0; /* return zero, no error */
4979 else {
4980 /* some error occurred */
4981 bsg_reply->result = rc;
4982 job->dd_data = NULL;
4983 }
4984
4985 return rc;
4986 }
4987
4988 /**
4989 * lpfc_bsg_menlo_cmd_cmp - lpfc_menlo_cmd completion handler
4990 * @phba: Pointer to HBA context object.
4991 * @cmdiocbq: Pointer to command iocb.
4992 * @rspiocbq: Pointer to response iocb.
4993 *
4994 * This function is the completion handler for iocbs issued using
4995 * lpfc_menlo_cmd function. This function is called by the
4996 * ring event handler function without any lock held. This function
4997 * can be called from both worker thread context and interrupt
4998 * context. This function also can be called from another thread which
4999 * cleans up the SLI layer objects.
5000 * This function copies the contents of the response iocb to the
5001 * response iocb memory object provided by the caller of
5002 * lpfc_sli_issue_iocb_wait and then wakes up the thread which
5003 * sleeps for the iocb completion.
5004 **/
5005 static void
5006 lpfc_bsg_menlo_cmd_cmp(struct lpfc_hba *phba,
5007 struct lpfc_iocbq *cmdiocbq,
5008 struct lpfc_iocbq *rspiocbq)
5009 {
5010 struct bsg_job_data *dd_data;
5011 struct bsg_job *job;
5012 struct fc_bsg_reply *bsg_reply;
5013 IOCB_t *rsp;
5014 struct lpfc_dmabuf *bmp, *cmp, *rmp;
5015 struct lpfc_bsg_menlo *menlo;
5016 unsigned long flags;
5017 struct menlo_response *menlo_resp;
5018 unsigned int rsp_size;
5019 int rc = 0;
5020
5021 dd_data = cmdiocbq->context1;
5022 cmp = cmdiocbq->context2;
5023 bmp = cmdiocbq->context3;
5024 menlo = &dd_data->context_un.menlo;
5025 rmp = menlo->rmp;
5026 rsp = &rspiocbq->iocb;
5027
5028 /* Determine if job has been aborted */
5029 spin_lock_irqsave(&phba->ct_ev_lock, flags);
5030 job = dd_data->set_job;
5031 if (job) {
5032 bsg_reply = job->reply;
5033 /* Prevent timeout handling from trying to abort job */
5034 job->dd_data = NULL;
5035 }
5036 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
5037
5038 /* Copy the job data or set the failing status for the job */
5039
5040 if (job) {
5041 /* always return the xri, this would be used in the case
5042 * of a menlo download to allow the data to be sent as a
5043 * continuation of the exchange.
5044 */
5045
5046 menlo_resp = (struct menlo_response *)
5047 bsg_reply->reply_data.vendor_reply.vendor_rsp;
5048 menlo_resp->xri = rsp->ulpContext;
5049 if (rsp->ulpStatus) {
5050 if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
5051 switch (rsp->un.ulpWord[4] & IOERR_PARAM_MASK) {
5052 case IOERR_SEQUENCE_TIMEOUT:
5053 rc = -ETIMEDOUT;
5054 break;
5055 case IOERR_INVALID_RPI:
5056 rc = -EFAULT;
5057 break;
5058 default:
5059 rc = -EACCES;
5060 break;
5061 }
5062 } else {
5063 rc = -EACCES;
5064 }
5065 } else {
5066 rsp_size = rsp->un.genreq64.bdl.bdeSize;
5067 bsg_reply->reply_payload_rcv_len =
5068 lpfc_bsg_copy_data(rmp, &job->reply_payload,
5069 rsp_size, 0);
5070 }
5071
5072 }
5073
5074 lpfc_sli_release_iocbq(phba, cmdiocbq);
5075 lpfc_free_bsg_buffers(phba, cmp);
5076 lpfc_free_bsg_buffers(phba, rmp);
5077 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
5078 kfree(bmp);
5079 kfree(dd_data);
5080
5081 /* Complete the job if active */
5082
5083 if (job) {
5084 bsg_reply->result = rc;
5085 bsg_job_done(job, bsg_reply->result,
5086 bsg_reply->reply_payload_rcv_len);
5087 }
5088
5089 return;
5090 }
5091
5092 /**
5093 * lpfc_menlo_cmd - send an ioctl for menlo hardware
5094 * @job: fc_bsg_job to handle
5095 *
5096 * This function issues a gen request 64 CR ioctl for all menlo cmd requests,
5097 * all the command completions will return the xri for the command.
5098 * For menlo data requests a gen request 64 CX is used to continue the exchange
5099 * supplied in the menlo request header xri field.
5100 **/
5101 static int
5102 lpfc_menlo_cmd(struct bsg_job *job)
5103 {
5104 struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
5105 struct fc_bsg_request *bsg_request = job->request;
5106 struct fc_bsg_reply *bsg_reply = job->reply;
5107 struct lpfc_hba *phba = vport->phba;
5108 struct lpfc_iocbq *cmdiocbq;
5109 IOCB_t *cmd;
5110 int rc = 0;
5111 struct menlo_command *menlo_cmd;
5112 struct lpfc_dmabuf *bmp = NULL, *cmp = NULL, *rmp = NULL;
5113 int request_nseg;
5114 int reply_nseg;
5115 struct bsg_job_data *dd_data;
5116 struct ulp_bde64 *bpl = NULL;
5117
5118 /* in case no data is returned return just the return code */
5119 bsg_reply->reply_payload_rcv_len = 0;
5120
5121 if (job->request_len <
5122 sizeof(struct fc_bsg_request) +
5123 sizeof(struct menlo_command)) {
5124 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
5125 "2784 Received MENLO_CMD request below "
5126 "minimum size\n");
5127 rc = -ERANGE;
5128 goto no_dd_data;
5129 }
5130
5131 if (job->reply_len <
5132 sizeof(struct fc_bsg_request) + sizeof(struct menlo_response)) {
5133 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
5134 "2785 Received MENLO_CMD reply below "
5135 "minimum size\n");
5136 rc = -ERANGE;
5137 goto no_dd_data;
5138 }
5139
5140 if (!(phba->menlo_flag & HBA_MENLO_SUPPORT)) {
5141 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
5142 "2786 Adapter does not support menlo "
5143 "commands\n");
5144 rc = -EPERM;
5145 goto no_dd_data;
5146 }
5147
5148 menlo_cmd = (struct menlo_command *)
5149 bsg_request->rqst_data.h_vendor.vendor_cmd;
5150
5151 /* allocate our bsg tracking structure */
5152 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
5153 if (!dd_data) {
5154 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
5155 "2787 Failed allocation of dd_data\n");
5156 rc = -ENOMEM;
5157 goto no_dd_data;
5158 }
5159
5160 bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
5161 if (!bmp) {
5162 rc = -ENOMEM;
5163 goto free_dd;
5164 }
5165
5166 bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys);
5167 if (!bmp->virt) {
5168 rc = -ENOMEM;
5169 goto free_bmp;
5170 }
5171
5172 INIT_LIST_HEAD(&bmp->list);
5173
5174 bpl = (struct ulp_bde64 *)bmp->virt;
5175 request_nseg = LPFC_BPL_SIZE/sizeof(struct ulp_bde64);
5176 cmp = lpfc_alloc_bsg_buffers(phba, job->request_payload.payload_len,
5177 1, bpl, &request_nseg);
5178 if (!cmp) {
5179 rc = -ENOMEM;
5180 goto free_bmp;
5181 }
5182 lpfc_bsg_copy_data(cmp, &job->request_payload,
5183 job->request_payload.payload_len, 1);
5184
5185 bpl += request_nseg;
5186 reply_nseg = LPFC_BPL_SIZE/sizeof(struct ulp_bde64) - request_nseg;
5187 rmp = lpfc_alloc_bsg_buffers(phba, job->reply_payload.payload_len, 0,
5188 bpl, &reply_nseg);
5189 if (!rmp) {
5190 rc = -ENOMEM;
5191 goto free_cmp;
5192 }
5193
5194 cmdiocbq = lpfc_sli_get_iocbq(phba);
5195 if (!cmdiocbq) {
5196 rc = -ENOMEM;
5197 goto free_rmp;
5198 }
5199
5200 cmd = &cmdiocbq->iocb;
5201 cmd->un.genreq64.bdl.ulpIoTag32 = 0;
5202 cmd->un.genreq64.bdl.addrHigh = putPaddrHigh(bmp->phys);
5203 cmd->un.genreq64.bdl.addrLow = putPaddrLow(bmp->phys);
5204 cmd->un.genreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
5205 cmd->un.genreq64.bdl.bdeSize =
5206 (request_nseg + reply_nseg) * sizeof(struct ulp_bde64);
5207 cmd->un.genreq64.w5.hcsw.Fctl = (SI | LA);
5208 cmd->un.genreq64.w5.hcsw.Dfctl = 0;
5209 cmd->un.genreq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CMD;
5210 cmd->un.genreq64.w5.hcsw.Type = MENLO_TRANSPORT_TYPE; /* 0xfe */
5211 cmd->ulpBdeCount = 1;
5212 cmd->ulpClass = CLASS3;
5213 cmd->ulpOwner = OWN_CHIP;
5214 cmd->ulpLe = 1; /* Limited Edition */
5215 cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
5216 cmdiocbq->vport = phba->pport;
5217 /* We want the firmware to timeout before we do */
5218 cmd->ulpTimeout = MENLO_TIMEOUT - 5;
5219 cmdiocbq->iocb_cmpl = lpfc_bsg_menlo_cmd_cmp;
5220 cmdiocbq->context1 = dd_data;
5221 cmdiocbq->context2 = cmp;
5222 cmdiocbq->context3 = bmp;
5223 if (menlo_cmd->cmd == LPFC_BSG_VENDOR_MENLO_CMD) {
5224 cmd->ulpCommand = CMD_GEN_REQUEST64_CR;
5225 cmd->ulpPU = MENLO_PU; /* 3 */
5226 cmd->un.ulpWord[4] = MENLO_DID; /* 0x0000FC0E */
5227 cmd->ulpContext = MENLO_CONTEXT; /* 0 */
5228 } else {
5229 cmd->ulpCommand = CMD_GEN_REQUEST64_CX;
5230 cmd->ulpPU = 1;
5231 cmd->un.ulpWord[4] = 0;
5232 cmd->ulpContext = menlo_cmd->xri;
5233 }
5234
5235 dd_data->type = TYPE_MENLO;
5236 dd_data->set_job = job;
5237 dd_data->context_un.menlo.cmdiocbq = cmdiocbq;
5238 dd_data->context_un.menlo.rmp = rmp;
5239 job->dd_data = dd_data;
5240
5241 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq,
5242 MENLO_TIMEOUT - 5);
5243 if (rc == IOCB_SUCCESS)
5244 return 0; /* done for now */
5245
5246 lpfc_sli_release_iocbq(phba, cmdiocbq);
5247
5248 free_rmp:
5249 lpfc_free_bsg_buffers(phba, rmp);
5250 free_cmp:
5251 lpfc_free_bsg_buffers(phba, cmp);
5252 free_bmp:
5253 if (bmp->virt)
5254 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
5255 kfree(bmp);
5256 free_dd:
5257 kfree(dd_data);
5258 no_dd_data:
5259 /* make error code available to userspace */
5260 bsg_reply->result = rc;
5261 job->dd_data = NULL;
5262 return rc;
5263 }
5264
5265 static int
5266 lpfc_forced_link_speed(struct bsg_job *job)
5267 {
5268 struct Scsi_Host *shost = fc_bsg_to_shost(job);
5269 struct lpfc_vport *vport = shost_priv(shost);
5270 struct lpfc_hba *phba = vport->phba;
5271 struct fc_bsg_reply *bsg_reply = job->reply;
5272 struct forced_link_speed_support_reply *forced_reply;
5273 int rc = 0;
5274
5275 if (job->request_len <
5276 sizeof(struct fc_bsg_request) +
5277 sizeof(struct get_forced_link_speed_support)) {
5278 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
5279 "0048 Received FORCED_LINK_SPEED request "
5280 "below minimum size\n");
5281 rc = -EINVAL;
5282 goto job_error;
5283 }
5284
5285 forced_reply = (struct forced_link_speed_support_reply *)
5286 bsg_reply->reply_data.vendor_reply.vendor_rsp;
5287
5288 if (job->reply_len <
5289 sizeof(struct fc_bsg_request) +
5290 sizeof(struct forced_link_speed_support_reply)) {
5291 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
5292 "0049 Received FORCED_LINK_SPEED reply below "
5293 "minimum size\n");
5294 rc = -EINVAL;
5295 goto job_error;
5296 }
5297
5298 forced_reply->supported = (phba->hba_flag & HBA_FORCED_LINK_SPEED)
5299 ? LPFC_FORCED_LINK_SPEED_SUPPORTED
5300 : LPFC_FORCED_LINK_SPEED_NOT_SUPPORTED;
5301 job_error:
5302 bsg_reply->result = rc;
5303 if (rc == 0)
5304 bsg_job_done(job, bsg_reply->result,
5305 bsg_reply->reply_payload_rcv_len);
5306 return rc;
5307 }
5308
5309 /**
5310 * lpfc_check_fwlog_support: Check FW log support on the adapter
5311 * @phba: Pointer to HBA context object.
5312 *
5313 * Check if FW Logging support by the adapter
5314 **/
5315 int
5316 lpfc_check_fwlog_support(struct lpfc_hba *phba)
5317 {
5318 struct lpfc_ras_fwlog *ras_fwlog = NULL;
5319
5320 ras_fwlog = &phba->ras_fwlog;
5321
5322 if (ras_fwlog->ras_hwsupport == false)
5323 return -EACCES;
5324 else if (ras_fwlog->ras_enabled == false)
5325 return -EPERM;
5326 else
5327 return 0;
5328 }
5329
5330 /**
5331 * lpfc_bsg_get_ras_config: Get RAS configuration settings
5332 * @job: fc_bsg_job to handle
5333 *
5334 * Get RAS configuration values set.
5335 **/
5336 static int
5337 lpfc_bsg_get_ras_config(struct bsg_job *job)
5338 {
5339 struct Scsi_Host *shost = fc_bsg_to_shost(job);
5340 struct lpfc_vport *vport = shost_priv(shost);
5341 struct fc_bsg_reply *bsg_reply = job->reply;
5342 struct lpfc_hba *phba = vport->phba;
5343 struct lpfc_bsg_get_ras_config_reply *ras_reply;
5344 struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog;
5345 int rc = 0;
5346
5347 if (job->request_len <
5348 sizeof(struct fc_bsg_request) +
5349 sizeof(struct lpfc_bsg_ras_req)) {
5350 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
5351 "6192 FW_LOG request received "
5352 "below minimum size\n");
5353 rc = -EINVAL;
5354 goto ras_job_error;
5355 }
5356
5357 /* Check FW log status */
5358 rc = lpfc_check_fwlog_support(phba);
5359 if (rc)
5360 goto ras_job_error;
5361
5362 ras_reply = (struct lpfc_bsg_get_ras_config_reply *)
5363 bsg_reply->reply_data.vendor_reply.vendor_rsp;
5364
5365 /* Current logging state */
5366 if (ras_fwlog->ras_active == true)
5367 ras_reply->state = LPFC_RASLOG_STATE_RUNNING;
5368 else
5369 ras_reply->state = LPFC_RASLOG_STATE_STOPPED;
5370
5371 ras_reply->log_level = phba->ras_fwlog.fw_loglevel;
5372 ras_reply->log_buff_sz = phba->cfg_ras_fwlog_buffsize;
5373
5374 ras_job_error:
5375 /* make error code available to userspace */
5376 bsg_reply->result = rc;
5377
5378 /* complete the job back to userspace */
5379 bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len);
5380 return rc;
5381 }
5382
5383 /**
5384 * lpfc_bsg_set_ras_config: Set FW logging parameters
5385 * @job: fc_bsg_job to handle
5386 *
5387 * Set log-level parameters for FW-logging in host memory
5388 **/
5389 static int
5390 lpfc_bsg_set_ras_config(struct bsg_job *job)
5391 {
5392 struct Scsi_Host *shost = fc_bsg_to_shost(job);
5393 struct lpfc_vport *vport = shost_priv(shost);
5394 struct lpfc_hba *phba = vport->phba;
5395 struct lpfc_bsg_set_ras_config_req *ras_req;
5396 struct fc_bsg_request *bsg_request = job->request;
5397 struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog;
5398 struct fc_bsg_reply *bsg_reply = job->reply;
5399 uint8_t action = 0, log_level = 0;
5400 int rc = 0, action_status = 0;
5401
5402 if (job->request_len <
5403 sizeof(struct fc_bsg_request) +
5404 sizeof(struct lpfc_bsg_set_ras_config_req)) {
5405 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
5406 "6182 Received RAS_LOG request "
5407 "below minimum size\n");
5408 rc = -EINVAL;
5409 goto ras_job_error;
5410 }
5411
5412 /* Check FW log status */
5413 rc = lpfc_check_fwlog_support(phba);
5414 if (rc)
5415 goto ras_job_error;
5416
5417 ras_req = (struct lpfc_bsg_set_ras_config_req *)
5418 bsg_request->rqst_data.h_vendor.vendor_cmd;
5419 action = ras_req->action;
5420 log_level = ras_req->log_level;
5421
5422 if (action == LPFC_RASACTION_STOP_LOGGING) {
5423 /* Check if already disabled */
5424 if (ras_fwlog->ras_active == false) {
5425 rc = -ESRCH;
5426 goto ras_job_error;
5427 }
5428
5429 /* Disable logging */
5430 lpfc_ras_stop_fwlog(phba);
5431 } else {
5432 /*action = LPFC_RASACTION_START_LOGGING*/
5433
5434 /* Even though FW-logging is active re-initialize
5435 * FW-logging with new log-level. Return status
5436 * "Logging already Running" to caller.
5437 **/
5438 if (ras_fwlog->ras_active)
5439 action_status = -EINPROGRESS;
5440
5441 /* Enable logging */
5442 rc = lpfc_sli4_ras_fwlog_init(phba, log_level,
5443 LPFC_RAS_ENABLE_LOGGING);
5444 if (rc) {
5445 rc = -EINVAL;
5446 goto ras_job_error;
5447 }
5448
5449 /* Check if FW-logging is re-initialized */
5450 if (action_status == -EINPROGRESS)
5451 rc = action_status;
5452 }
5453 ras_job_error:
5454 /* make error code available to userspace */
5455 bsg_reply->result = rc;
5456
5457 /* complete the job back to userspace */
5458 bsg_job_done(job, bsg_reply->result,
5459 bsg_reply->reply_payload_rcv_len);
5460
5461 return rc;
5462 }
5463
5464 /**
5465 * lpfc_bsg_get_ras_lwpd: Get log write position data
5466 * @job: fc_bsg_job to handle
5467 *
5468 * Get Offset/Wrap count of the log message written
5469 * in host memory
5470 **/
5471 static int
5472 lpfc_bsg_get_ras_lwpd(struct bsg_job *job)
5473 {
5474 struct Scsi_Host *shost = fc_bsg_to_shost(job);
5475 struct lpfc_vport *vport = shost_priv(shost);
5476 struct lpfc_bsg_get_ras_lwpd *ras_reply;
5477 struct lpfc_hba *phba = vport->phba;
5478 struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog;
5479 struct fc_bsg_reply *bsg_reply = job->reply;
5480 u32 *lwpd_ptr = NULL;
5481 int rc = 0;
5482
5483 rc = lpfc_check_fwlog_support(phba);
5484 if (rc)
5485 goto ras_job_error;
5486
5487 if (job->request_len <
5488 sizeof(struct fc_bsg_request) +
5489 sizeof(struct lpfc_bsg_ras_req)) {
5490 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
5491 "6183 Received RAS_LOG request "
5492 "below minimum size\n");
5493 rc = -EINVAL;
5494 goto ras_job_error;
5495 }
5496
5497 ras_reply = (struct lpfc_bsg_get_ras_lwpd *)
5498 bsg_reply->reply_data.vendor_reply.vendor_rsp;
5499
5500 if (!ras_fwlog->lwpd.virt) {
5501 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
5502 "6193 Restart FW Logging\n");
5503 rc = -EINVAL;
5504 goto ras_job_error;
5505 }
5506
5507 /* Get lwpd offset */
5508 lwpd_ptr = (uint32_t *)(ras_fwlog->lwpd.virt);
5509 ras_reply->offset = be32_to_cpu(*lwpd_ptr & 0xffffffff);
5510
5511 /* Get wrap count */
5512 ras_reply->wrap_count = be32_to_cpu(*(++lwpd_ptr) & 0xffffffff);
5513
5514 ras_job_error:
5515 /* make error code available to userspace */
5516 bsg_reply->result = rc;
5517
5518 /* complete the job back to userspace */
5519 bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len);
5520
5521 return rc;
5522 }
5523
5524 /**
5525 * lpfc_bsg_get_ras_fwlog: Read FW log
5526 * @job: fc_bsg_job to handle
5527 *
5528 * Copy the FW log into the passed buffer.
5529 **/
5530 static int
5531 lpfc_bsg_get_ras_fwlog(struct bsg_job *job)
5532 {
5533 struct Scsi_Host *shost = fc_bsg_to_shost(job);
5534 struct lpfc_vport *vport = shost_priv(shost);
5535 struct lpfc_hba *phba = vport->phba;
5536 struct fc_bsg_request *bsg_request = job->request;
5537 struct fc_bsg_reply *bsg_reply = job->reply;
5538 struct lpfc_bsg_get_fwlog_req *ras_req;
5539 u32 rd_offset, rd_index, offset;
5540 void *src, *fwlog_buff;
5541 struct lpfc_ras_fwlog *ras_fwlog = NULL;
5542 struct lpfc_dmabuf *dmabuf, *next;
5543 int rc = 0;
5544
5545 ras_fwlog = &phba->ras_fwlog;
5546
5547 rc = lpfc_check_fwlog_support(phba);
5548 if (rc)
5549 goto ras_job_error;
5550
5551 /* Logging to be stopped before reading */
5552 if (ras_fwlog->ras_active == true) {
5553 rc = -EINPROGRESS;
5554 goto ras_job_error;
5555 }
5556
5557 if (job->request_len <
5558 sizeof(struct fc_bsg_request) +
5559 sizeof(struct lpfc_bsg_get_fwlog_req)) {
5560 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
5561 "6184 Received RAS_LOG request "
5562 "below minimum size\n");
5563 rc = -EINVAL;
5564 goto ras_job_error;
5565 }
5566
5567 ras_req = (struct lpfc_bsg_get_fwlog_req *)
5568 bsg_request->rqst_data.h_vendor.vendor_cmd;
5569 rd_offset = ras_req->read_offset;
5570
5571 /* Allocate memory to read fw log*/
5572 fwlog_buff = vmalloc(ras_req->read_size);
5573 if (!fwlog_buff) {
5574 rc = -ENOMEM;
5575 goto ras_job_error;
5576 }
5577
5578 rd_index = (rd_offset / LPFC_RAS_MAX_ENTRY_SIZE);
5579 offset = (rd_offset % LPFC_RAS_MAX_ENTRY_SIZE);
5580
5581 list_for_each_entry_safe(dmabuf, next,
5582 &ras_fwlog->fwlog_buff_list, list) {
5583
5584 if (dmabuf->buffer_tag < rd_index)
5585 continue;
5586
5587 src = dmabuf->virt + offset;
5588 memcpy(fwlog_buff, src, ras_req->read_size);
5589 break;
5590 }
5591
5592 bsg_reply->reply_payload_rcv_len =
5593 sg_copy_from_buffer(job->reply_payload.sg_list,
5594 job->reply_payload.sg_cnt,
5595 fwlog_buff, ras_req->read_size);
5596
5597 vfree(fwlog_buff);
5598
5599 ras_job_error:
5600 bsg_reply->result = rc;
5601 bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len);
5602
5603 return rc;
5604 }
5605
5606 static int
5607 lpfc_get_trunk_info(struct bsg_job *job)
5608 {
5609 struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
5610 struct lpfc_hba *phba = vport->phba;
5611 struct fc_bsg_reply *bsg_reply = job->reply;
5612 struct lpfc_trunk_info *event_reply;
5613 int rc = 0;
5614
5615 if (job->request_len <
5616 sizeof(struct fc_bsg_request) + sizeof(struct get_trunk_info_req)) {
5617 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
5618 "2744 Received GET TRUNK _INFO request below "
5619 "minimum size\n");
5620 rc = -EINVAL;
5621 goto job_error;
5622 }
5623
5624 event_reply = (struct lpfc_trunk_info *)
5625 bsg_reply->reply_data.vendor_reply.vendor_rsp;
5626
5627 if (job->reply_len <
5628 sizeof(struct fc_bsg_request) + sizeof(struct lpfc_trunk_info)) {
5629 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
5630 "2728 Received GET TRUNK _INFO reply below "
5631 "minimum size\n");
5632 rc = -EINVAL;
5633 goto job_error;
5634 }
5635 if (event_reply == NULL) {
5636 rc = -EINVAL;
5637 goto job_error;
5638 }
5639
5640 bsg_bf_set(lpfc_trunk_info_link_status, event_reply,
5641 (phba->link_state >= LPFC_LINK_UP) ? 1 : 0);
5642
5643 bsg_bf_set(lpfc_trunk_info_trunk_active0, event_reply,
5644 (phba->trunk_link.link0.state == LPFC_LINK_UP) ? 1 : 0);
5645
5646 bsg_bf_set(lpfc_trunk_info_trunk_active1, event_reply,
5647 (phba->trunk_link.link1.state == LPFC_LINK_UP) ? 1 : 0);
5648
5649 bsg_bf_set(lpfc_trunk_info_trunk_active2, event_reply,
5650 (phba->trunk_link.link2.state == LPFC_LINK_UP) ? 1 : 0);
5651
5652 bsg_bf_set(lpfc_trunk_info_trunk_active3, event_reply,
5653 (phba->trunk_link.link3.state == LPFC_LINK_UP) ? 1 : 0);
5654
5655 bsg_bf_set(lpfc_trunk_info_trunk_config0, event_reply,
5656 bf_get(lpfc_conf_trunk_port0, &phba->sli4_hba));
5657
5658 bsg_bf_set(lpfc_trunk_info_trunk_config1, event_reply,
5659 bf_get(lpfc_conf_trunk_port1, &phba->sli4_hba));
5660
5661 bsg_bf_set(lpfc_trunk_info_trunk_config2, event_reply,
5662 bf_get(lpfc_conf_trunk_port2, &phba->sli4_hba));
5663
5664 bsg_bf_set(lpfc_trunk_info_trunk_config3, event_reply,
5665 bf_get(lpfc_conf_trunk_port3, &phba->sli4_hba));
5666
5667 event_reply->port_speed = phba->sli4_hba.link_state.speed / 1000;
5668 event_reply->logical_speed =
5669 phba->sli4_hba.link_state.logical_speed / 100;
5670 job_error:
5671 bsg_reply->result = rc;
5672 bsg_job_done(job, bsg_reply->result,
5673 bsg_reply->reply_payload_rcv_len);
5674 return rc;
5675
5676 }
5677
5678 /**
5679 * lpfc_bsg_hst_vendor - process a vendor-specific fc_bsg_job
5680 * @job: fc_bsg_job to handle
5681 **/
5682 static int
5683 lpfc_bsg_hst_vendor(struct bsg_job *job)
5684 {
5685 struct fc_bsg_request *bsg_request = job->request;
5686 struct fc_bsg_reply *bsg_reply = job->reply;
5687 int command = bsg_request->rqst_data.h_vendor.vendor_cmd[0];
5688 int rc;
5689
5690 switch (command) {
5691 case LPFC_BSG_VENDOR_SET_CT_EVENT:
5692 rc = lpfc_bsg_hba_set_event(job);
5693 break;
5694 case LPFC_BSG_VENDOR_GET_CT_EVENT:
5695 rc = lpfc_bsg_hba_get_event(job);
5696 break;
5697 case LPFC_BSG_VENDOR_SEND_MGMT_RESP:
5698 rc = lpfc_bsg_send_mgmt_rsp(job);
5699 break;
5700 case LPFC_BSG_VENDOR_DIAG_MODE:
5701 rc = lpfc_bsg_diag_loopback_mode(job);
5702 break;
5703 case LPFC_BSG_VENDOR_DIAG_MODE_END:
5704 rc = lpfc_sli4_bsg_diag_mode_end(job);
5705 break;
5706 case LPFC_BSG_VENDOR_DIAG_RUN_LOOPBACK:
5707 rc = lpfc_bsg_diag_loopback_run(job);
5708 break;
5709 case LPFC_BSG_VENDOR_LINK_DIAG_TEST:
5710 rc = lpfc_sli4_bsg_link_diag_test(job);
5711 break;
5712 case LPFC_BSG_VENDOR_GET_MGMT_REV:
5713 rc = lpfc_bsg_get_dfc_rev(job);
5714 break;
5715 case LPFC_BSG_VENDOR_MBOX:
5716 rc = lpfc_bsg_mbox_cmd(job);
5717 break;
5718 case LPFC_BSG_VENDOR_MENLO_CMD:
5719 case LPFC_BSG_VENDOR_MENLO_DATA:
5720 rc = lpfc_menlo_cmd(job);
5721 break;
5722 case LPFC_BSG_VENDOR_FORCED_LINK_SPEED:
5723 rc = lpfc_forced_link_speed(job);
5724 break;
5725 case LPFC_BSG_VENDOR_RAS_GET_LWPD:
5726 rc = lpfc_bsg_get_ras_lwpd(job);
5727 break;
5728 case LPFC_BSG_VENDOR_RAS_GET_FWLOG:
5729 rc = lpfc_bsg_get_ras_fwlog(job);
5730 break;
5731 case LPFC_BSG_VENDOR_RAS_GET_CONFIG:
5732 rc = lpfc_bsg_get_ras_config(job);
5733 break;
5734 case LPFC_BSG_VENDOR_RAS_SET_CONFIG:
5735 rc = lpfc_bsg_set_ras_config(job);
5736 break;
5737 case LPFC_BSG_VENDOR_GET_TRUNK_INFO:
5738 rc = lpfc_get_trunk_info(job);
5739 break;
5740 default:
5741 rc = -EINVAL;
5742 bsg_reply->reply_payload_rcv_len = 0;
5743 /* make error code available to userspace */
5744 bsg_reply->result = rc;
5745 break;
5746 }
5747
5748 return rc;
5749 }
5750
5751 /**
5752 * lpfc_bsg_request - handle a bsg request from the FC transport
5753 * @job: bsg_job to handle
5754 **/
5755 int
5756 lpfc_bsg_request(struct bsg_job *job)
5757 {
5758 struct fc_bsg_request *bsg_request = job->request;
5759 struct fc_bsg_reply *bsg_reply = job->reply;
5760 uint32_t msgcode;
5761 int rc;
5762
5763 msgcode = bsg_request->msgcode;
5764 switch (msgcode) {
5765 case FC_BSG_HST_VENDOR:
5766 rc = lpfc_bsg_hst_vendor(job);
5767 break;
5768 case FC_BSG_RPT_ELS:
5769 rc = lpfc_bsg_rport_els(job);
5770 break;
5771 case FC_BSG_RPT_CT:
5772 rc = lpfc_bsg_send_mgmt_cmd(job);
5773 break;
5774 default:
5775 rc = -EINVAL;
5776 bsg_reply->reply_payload_rcv_len = 0;
5777 /* make error code available to userspace */
5778 bsg_reply->result = rc;
5779 break;
5780 }
5781
5782 return rc;
5783 }
5784
5785 /**
5786 * lpfc_bsg_timeout - handle timeout of a bsg request from the FC transport
5787 * @job: bsg_job that has timed out
5788 *
5789 * This function just aborts the job's IOCB. The aborted IOCB will return to
5790 * the waiting function which will handle passing the error back to userspace
5791 **/
5792 int
5793 lpfc_bsg_timeout(struct bsg_job *job)
5794 {
5795 struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
5796 struct lpfc_hba *phba = vport->phba;
5797 struct lpfc_iocbq *cmdiocb;
5798 struct lpfc_sli_ring *pring;
5799 struct bsg_job_data *dd_data;
5800 unsigned long flags;
5801 int rc = 0;
5802 LIST_HEAD(completions);
5803 struct lpfc_iocbq *check_iocb, *next_iocb;
5804
5805 pring = lpfc_phba_elsring(phba);
5806 if (unlikely(!pring))
5807 return -EIO;
5808
5809 /* if job's driver data is NULL, the command completed or is in the
5810 * the process of completing. In this case, return status to request
5811 * so the timeout is retried. This avoids double completion issues
5812 * and the request will be pulled off the timer queue when the
5813 * command's completion handler executes. Otherwise, prevent the
5814 * command's completion handler from executing the job done callback
5815 * and continue processing to abort the outstanding the command.
5816 */
5817
5818 spin_lock_irqsave(&phba->ct_ev_lock, flags);
5819 dd_data = (struct bsg_job_data *)job->dd_data;
5820 if (dd_data) {
5821 dd_data->set_job = NULL;
5822 job->dd_data = NULL;
5823 } else {
5824 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
5825 return -EAGAIN;
5826 }
5827
5828 switch (dd_data->type) {
5829 case TYPE_IOCB:
5830 /* Check to see if IOCB was issued to the port or not. If not,
5831 * remove it from the txq queue and call cancel iocbs.
5832 * Otherwise, call abort iotag
5833 */
5834 cmdiocb = dd_data->context_un.iocb.cmdiocbq;
5835 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
5836
5837 spin_lock_irqsave(&phba->hbalock, flags);
5838 /* make sure the I/O abort window is still open */
5839 if (!(cmdiocb->iocb_flag & LPFC_IO_CMD_OUTSTANDING)) {
5840 spin_unlock_irqrestore(&phba->hbalock, flags);
5841 return -EAGAIN;
5842 }
5843 list_for_each_entry_safe(check_iocb, next_iocb, &pring->txq,
5844 list) {
5845 if (check_iocb == cmdiocb) {
5846 list_move_tail(&check_iocb->list, &completions);
5847 break;
5848 }
5849 }
5850 if (list_empty(&completions))
5851 lpfc_sli_issue_abort_iotag(phba, pring, cmdiocb);
5852 spin_unlock_irqrestore(&phba->hbalock, flags);
5853 if (!list_empty(&completions)) {
5854 lpfc_sli_cancel_iocbs(phba, &completions,
5855 IOSTAT_LOCAL_REJECT,
5856 IOERR_SLI_ABORTED);
5857 }
5858 break;
5859
5860 case TYPE_EVT:
5861 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
5862 break;
5863
5864 case TYPE_MBOX:
5865 /* Update the ext buf ctx state if needed */
5866
5867 if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_PORT)
5868 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_ABTS;
5869 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
5870 break;
5871 case TYPE_MENLO:
5872 /* Check to see if IOCB was issued to the port or not. If not,
5873 * remove it from the txq queue and call cancel iocbs.
5874 * Otherwise, call abort iotag.
5875 */
5876 cmdiocb = dd_data->context_un.menlo.cmdiocbq;
5877 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
5878
5879 spin_lock_irqsave(&phba->hbalock, flags);
5880 list_for_each_entry_safe(check_iocb, next_iocb, &pring->txq,
5881 list) {
5882 if (check_iocb == cmdiocb) {
5883 list_move_tail(&check_iocb->list, &completions);
5884 break;
5885 }
5886 }
5887 if (list_empty(&completions))
5888 lpfc_sli_issue_abort_iotag(phba, pring, cmdiocb);
5889 spin_unlock_irqrestore(&phba->hbalock, flags);
5890 if (!list_empty(&completions)) {
5891 lpfc_sli_cancel_iocbs(phba, &completions,
5892 IOSTAT_LOCAL_REJECT,
5893 IOERR_SLI_ABORTED);
5894 }
5895 break;
5896 default:
5897 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
5898 break;
5899 }
5900
5901 /* scsi transport fc fc_bsg_job_timeout expects a zero return code,
5902 * otherwise an error message will be displayed on the console
5903 * so always return success (zero)
5904 */
5905 return rc;
5906 }
Linux with added FPC-III support