1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2017-2019 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
lpfc_free_bsg_buffers(struct lpfc_hba * phba,struct lpfc_dmabuf * mlist)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 *
lpfc_alloc_bsg_buffers(struct lpfc_hba * phba,unsigned int size,int outbound_buffers,struct ulp_bde64 * bpl,int * bpl_entries)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
lpfc_bsg_copy_data(struct lpfc_dmabuf * dma_buffers,struct bsg_buffer * bsg_buffers,unsigned int bytes_to_transfer,int to_buffers)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
lpfc_bsg_send_mgmt_cmd_cmp(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocbq,struct lpfc_iocbq * rspiocbq)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
lpfc_bsg_send_mgmt_cmd(struct bsg_job * job)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
lpfc_bsg_rport_els_cmp(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocbq,struct lpfc_iocbq * rspiocbq)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
lpfc_bsg_rport_els(struct bsg_job * job)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
lpfc_bsg_event_free(struct kref * kref)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
lpfc_bsg_event_ref(struct lpfc_bsg_event * evt)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
lpfc_bsg_event_unref(struct lpfc_bsg_event * evt)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 *
lpfc_bsg_event_new(uint32_t ev_mask,int ev_reg_id,uint32_t ev_req_id)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
diag_cmd_data_free(struct lpfc_hba * phba,struct lpfc_dmabufext * mlist)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
lpfc_bsg_ct_unsol_event(struct lpfc_hba * phba,struct lpfc_sli_ring * pring,struct lpfc_iocbq * piocbq)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 x%px\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
lpfc_bsg_ct_unsol_abort(struct lpfc_hba * phba,struct hbq_dmabuf * dmabuf)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
lpfc_bsg_hba_set_event(struct bsg_job * job)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 kfree(dd_data);
1280 job->dd_data = NULL;
1281 return rc;
1282 }
1283
1284 /**
1285 * lpfc_bsg_hba_get_event - process a GET_EVENT bsg vendor command
1286 * @job: GET_EVENT fc_bsg_job
1287 **/
1288 static int
lpfc_bsg_hba_get_event(struct bsg_job * job)1289 lpfc_bsg_hba_get_event(struct bsg_job *job)
1290 {
1291 struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
1292 struct lpfc_hba *phba = vport->phba;
1293 struct fc_bsg_request *bsg_request = job->request;
1294 struct fc_bsg_reply *bsg_reply = job->reply;
1295 struct get_ct_event *event_req;
1296 struct get_ct_event_reply *event_reply;
1297 struct lpfc_bsg_event *evt, *evt_next;
1298 struct event_data *evt_dat = NULL;
1299 unsigned long flags;
1300 uint32_t rc = 0;
1301
1302 if (job->request_len <
1303 sizeof(struct fc_bsg_request) + sizeof(struct get_ct_event)) {
1304 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1305 "2613 Received GET_CT_EVENT request below "
1306 "minimum size\n");
1307 rc = -EINVAL;
1308 goto job_error;
1309 }
1310
1311 event_req = (struct get_ct_event *)
1312 bsg_request->rqst_data.h_vendor.vendor_cmd;
1313
1314 event_reply = (struct get_ct_event_reply *)
1315 bsg_reply->reply_data.vendor_reply.vendor_rsp;
1316 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1317 list_for_each_entry_safe(evt, evt_next, &phba->ct_ev_waiters, node) {
1318 if (evt->reg_id == event_req->ev_reg_id) {
1319 if (list_empty(&evt->events_to_get))
1320 break;
1321 lpfc_bsg_event_ref(evt);
1322 evt->wait_time_stamp = jiffies;
1323 evt_dat = list_entry(evt->events_to_get.prev,
1324 struct event_data, node);
1325 list_del(&evt_dat->node);
1326 break;
1327 }
1328 }
1329 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1330
1331 /* The app may continue to ask for event data until it gets
1332 * an error indicating that there isn't anymore
1333 */
1334 if (evt_dat == NULL) {
1335 bsg_reply->reply_payload_rcv_len = 0;
1336 rc = -ENOENT;
1337 goto job_error;
1338 }
1339
1340 if (evt_dat->len > job->request_payload.payload_len) {
1341 evt_dat->len = job->request_payload.payload_len;
1342 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1343 "2618 Truncated event data at %d "
1344 "bytes\n",
1345 job->request_payload.payload_len);
1346 }
1347
1348 event_reply->type = evt_dat->type;
1349 event_reply->immed_data = evt_dat->immed_dat;
1350 if (evt_dat->len > 0)
1351 bsg_reply->reply_payload_rcv_len =
1352 sg_copy_from_buffer(job->request_payload.sg_list,
1353 job->request_payload.sg_cnt,
1354 evt_dat->data, evt_dat->len);
1355 else
1356 bsg_reply->reply_payload_rcv_len = 0;
1357
1358 if (evt_dat) {
1359 kfree(evt_dat->data);
1360 kfree(evt_dat);
1361 }
1362
1363 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1364 lpfc_bsg_event_unref(evt);
1365 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1366 job->dd_data = NULL;
1367 bsg_reply->result = 0;
1368 bsg_job_done(job, bsg_reply->result,
1369 bsg_reply->reply_payload_rcv_len);
1370 return 0;
1371
1372 job_error:
1373 job->dd_data = NULL;
1374 bsg_reply->result = rc;
1375 return rc;
1376 }
1377
1378 /**
1379 * lpfc_issue_ct_rsp_cmp - lpfc_issue_ct_rsp's completion handler
1380 * @phba: Pointer to HBA context object.
1381 * @cmdiocbq: Pointer to command iocb.
1382 * @rspiocbq: Pointer to response iocb.
1383 *
1384 * This function is the completion handler for iocbs issued using
1385 * lpfc_issue_ct_rsp_cmp function. This function is called by the
1386 * ring event handler function without any lock held. This function
1387 * can be called from both worker thread context and interrupt
1388 * context. This function also can be called from other thread which
1389 * cleans up the SLI layer objects.
1390 * This function copy the contents of the response iocb to the
1391 * response iocb memory object provided by the caller of
1392 * lpfc_sli_issue_iocb_wait and then wakes up the thread which
1393 * sleeps for the iocb completion.
1394 **/
1395 static void
lpfc_issue_ct_rsp_cmp(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocbq,struct lpfc_iocbq * rspiocbq)1396 lpfc_issue_ct_rsp_cmp(struct lpfc_hba *phba,
1397 struct lpfc_iocbq *cmdiocbq,
1398 struct lpfc_iocbq *rspiocbq)
1399 {
1400 struct bsg_job_data *dd_data;
1401 struct bsg_job *job;
1402 struct fc_bsg_reply *bsg_reply;
1403 IOCB_t *rsp;
1404 struct lpfc_dmabuf *bmp, *cmp;
1405 struct lpfc_nodelist *ndlp;
1406 unsigned long flags;
1407 int rc = 0;
1408
1409 dd_data = cmdiocbq->context1;
1410
1411 /* Determine if job has been aborted */
1412 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1413 job = dd_data->set_job;
1414 if (job) {
1415 /* Prevent timeout handling from trying to abort job */
1416 job->dd_data = NULL;
1417 }
1418 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1419
1420 /* Close the timeout handler abort window */
1421 spin_lock_irqsave(&phba->hbalock, flags);
1422 cmdiocbq->iocb_flag &= ~LPFC_IO_CMD_OUTSTANDING;
1423 spin_unlock_irqrestore(&phba->hbalock, flags);
1424
1425 ndlp = dd_data->context_un.iocb.ndlp;
1426 cmp = cmdiocbq->context2;
1427 bmp = cmdiocbq->context3;
1428 rsp = &rspiocbq->iocb;
1429
1430 /* Copy the completed job data or set the error status */
1431
1432 if (job) {
1433 bsg_reply = job->reply;
1434 if (rsp->ulpStatus) {
1435 if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
1436 switch (rsp->un.ulpWord[4] & IOERR_PARAM_MASK) {
1437 case IOERR_SEQUENCE_TIMEOUT:
1438 rc = -ETIMEDOUT;
1439 break;
1440 case IOERR_INVALID_RPI:
1441 rc = -EFAULT;
1442 break;
1443 default:
1444 rc = -EACCES;
1445 break;
1446 }
1447 } else {
1448 rc = -EACCES;
1449 }
1450 } else {
1451 bsg_reply->reply_payload_rcv_len = 0;
1452 }
1453 }
1454
1455 lpfc_free_bsg_buffers(phba, cmp);
1456 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
1457 kfree(bmp);
1458 lpfc_sli_release_iocbq(phba, cmdiocbq);
1459 lpfc_nlp_put(ndlp);
1460 kfree(dd_data);
1461
1462 /* Complete the job if the job is still active */
1463
1464 if (job) {
1465 bsg_reply->result = rc;
1466 bsg_job_done(job, bsg_reply->result,
1467 bsg_reply->reply_payload_rcv_len);
1468 }
1469 return;
1470 }
1471
1472 /**
1473 * lpfc_issue_ct_rsp - issue a ct response
1474 * @phba: Pointer to HBA context object.
1475 * @job: Pointer to the job object.
1476 * @tag: tag index value into the ports context exchange array.
1477 * @bmp: Pointer to a dma buffer descriptor.
1478 * @num_entry: Number of enties in the bde.
1479 **/
1480 static int
lpfc_issue_ct_rsp(struct lpfc_hba * phba,struct bsg_job * job,uint32_t tag,struct lpfc_dmabuf * cmp,struct lpfc_dmabuf * bmp,int num_entry)1481 lpfc_issue_ct_rsp(struct lpfc_hba *phba, struct bsg_job *job, uint32_t tag,
1482 struct lpfc_dmabuf *cmp, struct lpfc_dmabuf *bmp,
1483 int num_entry)
1484 {
1485 IOCB_t *icmd;
1486 struct lpfc_iocbq *ctiocb = NULL;
1487 int rc = 0;
1488 struct lpfc_nodelist *ndlp = NULL;
1489 struct bsg_job_data *dd_data;
1490 unsigned long flags;
1491 uint32_t creg_val;
1492
1493 /* allocate our bsg tracking structure */
1494 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
1495 if (!dd_data) {
1496 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1497 "2736 Failed allocation of dd_data\n");
1498 rc = -ENOMEM;
1499 goto no_dd_data;
1500 }
1501
1502 /* Allocate buffer for command iocb */
1503 ctiocb = lpfc_sli_get_iocbq(phba);
1504 if (!ctiocb) {
1505 rc = -ENOMEM;
1506 goto no_ctiocb;
1507 }
1508
1509 icmd = &ctiocb->iocb;
1510 icmd->un.xseq64.bdl.ulpIoTag32 = 0;
1511 icmd->un.xseq64.bdl.addrHigh = putPaddrHigh(bmp->phys);
1512 icmd->un.xseq64.bdl.addrLow = putPaddrLow(bmp->phys);
1513 icmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
1514 icmd->un.xseq64.bdl.bdeSize = (num_entry * sizeof(struct ulp_bde64));
1515 icmd->un.xseq64.w5.hcsw.Fctl = (LS | LA);
1516 icmd->un.xseq64.w5.hcsw.Dfctl = 0;
1517 icmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_SOL_CTL;
1518 icmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT;
1519
1520 /* Fill in rest of iocb */
1521 icmd->ulpCommand = CMD_XMIT_SEQUENCE64_CX;
1522 icmd->ulpBdeCount = 1;
1523 icmd->ulpLe = 1;
1524 icmd->ulpClass = CLASS3;
1525 if (phba->sli_rev == LPFC_SLI_REV4) {
1526 /* Do not issue unsol response if oxid not marked as valid */
1527 if (phba->ct_ctx[tag].valid != UNSOL_VALID) {
1528 rc = IOCB_ERROR;
1529 goto issue_ct_rsp_exit;
1530 }
1531 icmd->ulpContext = phba->ct_ctx[tag].rxid;
1532 icmd->unsli3.rcvsli3.ox_id = phba->ct_ctx[tag].oxid;
1533 ndlp = lpfc_findnode_did(phba->pport, phba->ct_ctx[tag].SID);
1534 if (!ndlp) {
1535 lpfc_printf_log(phba, KERN_WARNING, LOG_ELS,
1536 "2721 ndlp null for oxid %x SID %x\n",
1537 icmd->ulpContext,
1538 phba->ct_ctx[tag].SID);
1539 rc = IOCB_ERROR;
1540 goto issue_ct_rsp_exit;
1541 }
1542
1543 /* Check if the ndlp is active */
1544 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
1545 rc = IOCB_ERROR;
1546 goto issue_ct_rsp_exit;
1547 }
1548
1549 /* get a refernece count so the ndlp doesn't go away while
1550 * we respond
1551 */
1552 if (!lpfc_nlp_get(ndlp)) {
1553 rc = IOCB_ERROR;
1554 goto issue_ct_rsp_exit;
1555 }
1556
1557 icmd->un.ulpWord[3] =
1558 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
1559
1560 /* The exchange is done, mark the entry as invalid */
1561 phba->ct_ctx[tag].valid = UNSOL_INVALID;
1562 } else
1563 icmd->ulpContext = (ushort) tag;
1564
1565 icmd->ulpTimeout = phba->fc_ratov * 2;
1566
1567 /* Xmit CT response on exchange <xid> */
1568 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1569 "2722 Xmit CT response on exchange x%x Data: x%x x%x x%x\n",
1570 icmd->ulpContext, icmd->ulpIoTag, tag, phba->link_state);
1571
1572 ctiocb->iocb_flag |= LPFC_IO_LIBDFC;
1573 ctiocb->vport = phba->pport;
1574 ctiocb->context1 = dd_data;
1575 ctiocb->context2 = cmp;
1576 ctiocb->context3 = bmp;
1577 ctiocb->context_un.ndlp = ndlp;
1578 ctiocb->iocb_cmpl = lpfc_issue_ct_rsp_cmp;
1579
1580 dd_data->type = TYPE_IOCB;
1581 dd_data->set_job = job;
1582 dd_data->context_un.iocb.cmdiocbq = ctiocb;
1583 dd_data->context_un.iocb.ndlp = ndlp;
1584 dd_data->context_un.iocb.rmp = NULL;
1585 job->dd_data = dd_data;
1586
1587 if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
1588 if (lpfc_readl(phba->HCregaddr, &creg_val)) {
1589 rc = -IOCB_ERROR;
1590 goto issue_ct_rsp_exit;
1591 }
1592 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
1593 writel(creg_val, phba->HCregaddr);
1594 readl(phba->HCregaddr); /* flush */
1595 }
1596
1597 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, ctiocb, 0);
1598
1599 if (rc == IOCB_SUCCESS) {
1600 spin_lock_irqsave(&phba->hbalock, flags);
1601 /* make sure the I/O had not been completed/released */
1602 if (ctiocb->iocb_flag & LPFC_IO_LIBDFC) {
1603 /* open up abort window to timeout handler */
1604 ctiocb->iocb_flag |= LPFC_IO_CMD_OUTSTANDING;
1605 }
1606 spin_unlock_irqrestore(&phba->hbalock, flags);
1607 return 0; /* done for now */
1608 }
1609
1610 /* iocb failed so cleanup */
1611 job->dd_data = NULL;
1612
1613 issue_ct_rsp_exit:
1614 lpfc_sli_release_iocbq(phba, ctiocb);
1615 no_ctiocb:
1616 kfree(dd_data);
1617 no_dd_data:
1618 return rc;
1619 }
1620
1621 /**
1622 * lpfc_bsg_send_mgmt_rsp - process a SEND_MGMT_RESP bsg vendor command
1623 * @job: SEND_MGMT_RESP fc_bsg_job
1624 **/
1625 static int
lpfc_bsg_send_mgmt_rsp(struct bsg_job * job)1626 lpfc_bsg_send_mgmt_rsp(struct bsg_job *job)
1627 {
1628 struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
1629 struct lpfc_hba *phba = vport->phba;
1630 struct fc_bsg_request *bsg_request = job->request;
1631 struct fc_bsg_reply *bsg_reply = job->reply;
1632 struct send_mgmt_resp *mgmt_resp = (struct send_mgmt_resp *)
1633 bsg_request->rqst_data.h_vendor.vendor_cmd;
1634 struct ulp_bde64 *bpl;
1635 struct lpfc_dmabuf *bmp = NULL, *cmp = NULL;
1636 int bpl_entries;
1637 uint32_t tag = mgmt_resp->tag;
1638 unsigned long reqbfrcnt =
1639 (unsigned long)job->request_payload.payload_len;
1640 int rc = 0;
1641
1642 /* in case no data is transferred */
1643 bsg_reply->reply_payload_rcv_len = 0;
1644
1645 if (!reqbfrcnt || (reqbfrcnt > (80 * BUF_SZ_4K))) {
1646 rc = -ERANGE;
1647 goto send_mgmt_rsp_exit;
1648 }
1649
1650 bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
1651 if (!bmp) {
1652 rc = -ENOMEM;
1653 goto send_mgmt_rsp_exit;
1654 }
1655
1656 bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys);
1657 if (!bmp->virt) {
1658 rc = -ENOMEM;
1659 goto send_mgmt_rsp_free_bmp;
1660 }
1661
1662 INIT_LIST_HEAD(&bmp->list);
1663 bpl = (struct ulp_bde64 *) bmp->virt;
1664 bpl_entries = (LPFC_BPL_SIZE/sizeof(struct ulp_bde64));
1665 cmp = lpfc_alloc_bsg_buffers(phba, job->request_payload.payload_len,
1666 1, bpl, &bpl_entries);
1667 if (!cmp) {
1668 rc = -ENOMEM;
1669 goto send_mgmt_rsp_free_bmp;
1670 }
1671 lpfc_bsg_copy_data(cmp, &job->request_payload,
1672 job->request_payload.payload_len, 1);
1673
1674 rc = lpfc_issue_ct_rsp(phba, job, tag, cmp, bmp, bpl_entries);
1675
1676 if (rc == IOCB_SUCCESS)
1677 return 0; /* done for now */
1678
1679 rc = -EACCES;
1680
1681 lpfc_free_bsg_buffers(phba, cmp);
1682
1683 send_mgmt_rsp_free_bmp:
1684 if (bmp->virt)
1685 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
1686 kfree(bmp);
1687 send_mgmt_rsp_exit:
1688 /* make error code available to userspace */
1689 bsg_reply->result = rc;
1690 job->dd_data = NULL;
1691 return rc;
1692 }
1693
1694 /**
1695 * lpfc_bsg_diag_mode_enter - process preparing into device diag loopback mode
1696 * @phba: Pointer to HBA context object.
1697 *
1698 * This function is responsible for preparing driver for diag loopback
1699 * on device.
1700 */
1701 static int
lpfc_bsg_diag_mode_enter(struct lpfc_hba * phba)1702 lpfc_bsg_diag_mode_enter(struct lpfc_hba *phba)
1703 {
1704 struct lpfc_vport **vports;
1705 struct Scsi_Host *shost;
1706 struct lpfc_sli *psli;
1707 struct lpfc_queue *qp = NULL;
1708 struct lpfc_sli_ring *pring;
1709 int i = 0;
1710
1711 psli = &phba->sli;
1712 if (!psli)
1713 return -ENODEV;
1714
1715
1716 if ((phba->link_state == LPFC_HBA_ERROR) ||
1717 (psli->sli_flag & LPFC_BLOCK_MGMT_IO) ||
1718 (!(psli->sli_flag & LPFC_SLI_ACTIVE)))
1719 return -EACCES;
1720
1721 vports = lpfc_create_vport_work_array(phba);
1722 if (vports) {
1723 for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
1724 shost = lpfc_shost_from_vport(vports[i]);
1725 scsi_block_requests(shost);
1726 }
1727 lpfc_destroy_vport_work_array(phba, vports);
1728 } else {
1729 shost = lpfc_shost_from_vport(phba->pport);
1730 scsi_block_requests(shost);
1731 }
1732
1733 if (phba->sli_rev != LPFC_SLI_REV4) {
1734 pring = &psli->sli3_ring[LPFC_FCP_RING];
1735 lpfc_emptyq_wait(phba, &pring->txcmplq, &phba->hbalock);
1736 return 0;
1737 }
1738 list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
1739 pring = qp->pring;
1740 if (!pring || (pring->ringno != LPFC_FCP_RING))
1741 continue;
1742 if (!lpfc_emptyq_wait(phba, &pring->txcmplq,
1743 &pring->ring_lock))
1744 break;
1745 }
1746 return 0;
1747 }
1748
1749 /**
1750 * lpfc_bsg_diag_mode_exit - exit process from device diag loopback mode
1751 * @phba: Pointer to HBA context object.
1752 *
1753 * This function is responsible for driver exit processing of setting up
1754 * diag loopback mode on device.
1755 */
1756 static void
lpfc_bsg_diag_mode_exit(struct lpfc_hba * phba)1757 lpfc_bsg_diag_mode_exit(struct lpfc_hba *phba)
1758 {
1759 struct Scsi_Host *shost;
1760 struct lpfc_vport **vports;
1761 int i;
1762
1763 vports = lpfc_create_vport_work_array(phba);
1764 if (vports) {
1765 for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
1766 shost = lpfc_shost_from_vport(vports[i]);
1767 scsi_unblock_requests(shost);
1768 }
1769 lpfc_destroy_vport_work_array(phba, vports);
1770 } else {
1771 shost = lpfc_shost_from_vport(phba->pport);
1772 scsi_unblock_requests(shost);
1773 }
1774 return;
1775 }
1776
1777 /**
1778 * lpfc_sli3_bsg_diag_loopback_mode - process an sli3 bsg vendor command
1779 * @phba: Pointer to HBA context object.
1780 * @job: LPFC_BSG_VENDOR_DIAG_MODE
1781 *
1782 * This function is responsible for placing an sli3 port into diagnostic
1783 * loopback mode in order to perform a diagnostic loopback test.
1784 * All new scsi requests are blocked, a small delay is used to allow the
1785 * scsi requests to complete then the link is brought down. If the link is
1786 * is placed in loopback mode then scsi requests are again allowed
1787 * so the scsi mid-layer doesn't give up on the port.
1788 * All of this is done in-line.
1789 */
1790 static int
lpfc_sli3_bsg_diag_loopback_mode(struct lpfc_hba * phba,struct bsg_job * job)1791 lpfc_sli3_bsg_diag_loopback_mode(struct lpfc_hba *phba, struct bsg_job *job)
1792 {
1793 struct fc_bsg_request *bsg_request = job->request;
1794 struct fc_bsg_reply *bsg_reply = job->reply;
1795 struct diag_mode_set *loopback_mode;
1796 uint32_t link_flags;
1797 uint32_t timeout;
1798 LPFC_MBOXQ_t *pmboxq = NULL;
1799 int mbxstatus = MBX_SUCCESS;
1800 int i = 0;
1801 int rc = 0;
1802
1803 /* no data to return just the return code */
1804 bsg_reply->reply_payload_rcv_len = 0;
1805
1806 if (job->request_len < sizeof(struct fc_bsg_request) +
1807 sizeof(struct diag_mode_set)) {
1808 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1809 "2738 Received DIAG MODE request size:%d "
1810 "below the minimum size:%d\n",
1811 job->request_len,
1812 (int)(sizeof(struct fc_bsg_request) +
1813 sizeof(struct diag_mode_set)));
1814 rc = -EINVAL;
1815 goto job_error;
1816 }
1817
1818 rc = lpfc_bsg_diag_mode_enter(phba);
1819 if (rc)
1820 goto job_error;
1821
1822 /* bring the link to diagnostic mode */
1823 loopback_mode = (struct diag_mode_set *)
1824 bsg_request->rqst_data.h_vendor.vendor_cmd;
1825 link_flags = loopback_mode->type;
1826 timeout = loopback_mode->timeout * 100;
1827
1828 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1829 if (!pmboxq) {
1830 rc = -ENOMEM;
1831 goto loopback_mode_exit;
1832 }
1833 memset((void *)pmboxq, 0, sizeof(LPFC_MBOXQ_t));
1834 pmboxq->u.mb.mbxCommand = MBX_DOWN_LINK;
1835 pmboxq->u.mb.mbxOwner = OWN_HOST;
1836
1837 mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO);
1838
1839 if ((mbxstatus == MBX_SUCCESS) && (pmboxq->u.mb.mbxStatus == 0)) {
1840 /* wait for link down before proceeding */
1841 i = 0;
1842 while (phba->link_state != LPFC_LINK_DOWN) {
1843 if (i++ > timeout) {
1844 rc = -ETIMEDOUT;
1845 goto loopback_mode_exit;
1846 }
1847 msleep(10);
1848 }
1849
1850 memset((void *)pmboxq, 0, sizeof(LPFC_MBOXQ_t));
1851 if (link_flags == INTERNAL_LOOP_BACK)
1852 pmboxq->u.mb.un.varInitLnk.link_flags = FLAGS_LOCAL_LB;
1853 else
1854 pmboxq->u.mb.un.varInitLnk.link_flags =
1855 FLAGS_TOPOLOGY_MODE_LOOP;
1856
1857 pmboxq->u.mb.mbxCommand = MBX_INIT_LINK;
1858 pmboxq->u.mb.mbxOwner = OWN_HOST;
1859
1860 mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq,
1861 LPFC_MBOX_TMO);
1862
1863 if ((mbxstatus != MBX_SUCCESS) || (pmboxq->u.mb.mbxStatus))
1864 rc = -ENODEV;
1865 else {
1866 spin_lock_irq(&phba->hbalock);
1867 phba->link_flag |= LS_LOOPBACK_MODE;
1868 spin_unlock_irq(&phba->hbalock);
1869 /* wait for the link attention interrupt */
1870 msleep(100);
1871
1872 i = 0;
1873 while (phba->link_state != LPFC_HBA_READY) {
1874 if (i++ > timeout) {
1875 rc = -ETIMEDOUT;
1876 break;
1877 }
1878
1879 msleep(10);
1880 }
1881 }
1882
1883 } else
1884 rc = -ENODEV;
1885
1886 loopback_mode_exit:
1887 lpfc_bsg_diag_mode_exit(phba);
1888
1889 /*
1890 * Let SLI layer release mboxq if mbox command completed after timeout.
1891 */
1892 if (pmboxq && mbxstatus != MBX_TIMEOUT)
1893 mempool_free(pmboxq, phba->mbox_mem_pool);
1894
1895 job_error:
1896 /* make error code available to userspace */
1897 bsg_reply->result = rc;
1898 /* complete the job back to userspace if no error */
1899 if (rc == 0)
1900 bsg_job_done(job, bsg_reply->result,
1901 bsg_reply->reply_payload_rcv_len);
1902 return rc;
1903 }
1904
1905 /**
1906 * lpfc_sli4_bsg_set_link_diag_state - set sli4 link diag state
1907 * @phba: Pointer to HBA context object.
1908 * @diag: Flag for set link to diag or nomral operation state.
1909 *
1910 * This function is responsible for issuing a sli4 mailbox command for setting
1911 * link to either diag state or normal operation state.
1912 */
1913 static int
lpfc_sli4_bsg_set_link_diag_state(struct lpfc_hba * phba,uint32_t diag)1914 lpfc_sli4_bsg_set_link_diag_state(struct lpfc_hba *phba, uint32_t diag)
1915 {
1916 LPFC_MBOXQ_t *pmboxq;
1917 struct lpfc_mbx_set_link_diag_state *link_diag_state;
1918 uint32_t req_len, alloc_len;
1919 int mbxstatus = MBX_SUCCESS, rc;
1920
1921 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1922 if (!pmboxq)
1923 return -ENOMEM;
1924
1925 req_len = (sizeof(struct lpfc_mbx_set_link_diag_state) -
1926 sizeof(struct lpfc_sli4_cfg_mhdr));
1927 alloc_len = lpfc_sli4_config(phba, pmboxq, LPFC_MBOX_SUBSYSTEM_FCOE,
1928 LPFC_MBOX_OPCODE_FCOE_LINK_DIAG_STATE,
1929 req_len, LPFC_SLI4_MBX_EMBED);
1930 if (alloc_len != req_len) {
1931 rc = -ENOMEM;
1932 goto link_diag_state_set_out;
1933 }
1934 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
1935 "3128 Set link to diagnostic state:x%x (x%x/x%x)\n",
1936 diag, phba->sli4_hba.lnk_info.lnk_tp,
1937 phba->sli4_hba.lnk_info.lnk_no);
1938
1939 link_diag_state = &pmboxq->u.mqe.un.link_diag_state;
1940 bf_set(lpfc_mbx_set_diag_state_diag_bit_valid, &link_diag_state->u.req,
1941 LPFC_DIAG_STATE_DIAG_BIT_VALID_CHANGE);
1942 bf_set(lpfc_mbx_set_diag_state_link_num, &link_diag_state->u.req,
1943 phba->sli4_hba.lnk_info.lnk_no);
1944 bf_set(lpfc_mbx_set_diag_state_link_type, &link_diag_state->u.req,
1945 phba->sli4_hba.lnk_info.lnk_tp);
1946 if (diag)
1947 bf_set(lpfc_mbx_set_diag_state_diag,
1948 &link_diag_state->u.req, 1);
1949 else
1950 bf_set(lpfc_mbx_set_diag_state_diag,
1951 &link_diag_state->u.req, 0);
1952
1953 mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO);
1954
1955 if ((mbxstatus == MBX_SUCCESS) && (pmboxq->u.mb.mbxStatus == 0))
1956 rc = 0;
1957 else
1958 rc = -ENODEV;
1959
1960 link_diag_state_set_out:
1961 if (pmboxq && (mbxstatus != MBX_TIMEOUT))
1962 mempool_free(pmboxq, phba->mbox_mem_pool);
1963
1964 return rc;
1965 }
1966
1967 /**
1968 * lpfc_sli4_bsg_set_loopback_mode - set sli4 internal loopback diagnostic
1969 * @phba: Pointer to HBA context object.
1970 * @mode: loopback mode to set
1971 * @link_no: link number for loopback mode to set
1972 *
1973 * This function is responsible for issuing a sli4 mailbox command for setting
1974 * up loopback diagnostic for a link.
1975 */
1976 static int
lpfc_sli4_bsg_set_loopback_mode(struct lpfc_hba * phba,int mode,uint32_t link_no)1977 lpfc_sli4_bsg_set_loopback_mode(struct lpfc_hba *phba, int mode,
1978 uint32_t link_no)
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, link_no);
2000
2001 if (phba->sli4_hba.conf_trunk & (1 << link_no)) {
2002 bf_set(lpfc_mbx_set_diag_state_link_type,
2003 &link_diag_loopback->u.req, LPFC_LNK_FC_TRUNKED);
2004 } else {
2005 bf_set(lpfc_mbx_set_diag_state_link_type,
2006 &link_diag_loopback->u.req,
2007 phba->sli4_hba.lnk_info.lnk_tp);
2008 }
2009
2010 bf_set(lpfc_mbx_set_diag_lpbk_type, &link_diag_loopback->u.req,
2011 mode);
2012
2013 mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO);
2014 if ((mbxstatus != MBX_SUCCESS) || (pmboxq->u.mb.mbxStatus)) {
2015 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2016 "3127 Failed setup loopback mode mailbox "
2017 "command, rc:x%x, status:x%x\n", mbxstatus,
2018 pmboxq->u.mb.mbxStatus);
2019 rc = -ENODEV;
2020 }
2021 if (pmboxq && (mbxstatus != MBX_TIMEOUT))
2022 mempool_free(pmboxq, phba->mbox_mem_pool);
2023 return rc;
2024 }
2025
2026 /**
2027 * lpfc_sli4_diag_fcport_reg_setup - setup port registrations for diagnostic
2028 * @phba: Pointer to HBA context object.
2029 *
2030 * This function set up SLI4 FC port registrations for diagnostic run, which
2031 * includes all the rpis, vfi, and also vpi.
2032 */
2033 static int
lpfc_sli4_diag_fcport_reg_setup(struct lpfc_hba * phba)2034 lpfc_sli4_diag_fcport_reg_setup(struct lpfc_hba *phba)
2035 {
2036 int rc;
2037
2038 if (phba->pport->fc_flag & FC_VFI_REGISTERED) {
2039 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2040 "3136 Port still had vfi registered: "
2041 "mydid:x%x, fcfi:%d, vfi:%d, vpi:%d\n",
2042 phba->pport->fc_myDID, phba->fcf.fcfi,
2043 phba->sli4_hba.vfi_ids[phba->pport->vfi],
2044 phba->vpi_ids[phba->pport->vpi]);
2045 return -EINVAL;
2046 }
2047 rc = lpfc_issue_reg_vfi(phba->pport);
2048 return rc;
2049 }
2050
2051 /**
2052 * lpfc_sli4_bsg_diag_loopback_mode - process an sli4 bsg vendor command
2053 * @phba: Pointer to HBA context object.
2054 * @job: LPFC_BSG_VENDOR_DIAG_MODE
2055 *
2056 * This function is responsible for placing an sli4 port into diagnostic
2057 * loopback mode in order to perform a diagnostic loopback test.
2058 */
2059 static int
lpfc_sli4_bsg_diag_loopback_mode(struct lpfc_hba * phba,struct bsg_job * job)2060 lpfc_sli4_bsg_diag_loopback_mode(struct lpfc_hba *phba, struct bsg_job *job)
2061 {
2062 struct fc_bsg_request *bsg_request = job->request;
2063 struct fc_bsg_reply *bsg_reply = job->reply;
2064 struct diag_mode_set *loopback_mode;
2065 uint32_t link_flags, timeout, link_no;
2066 int i, rc = 0;
2067
2068 /* no data to return just the return code */
2069 bsg_reply->reply_payload_rcv_len = 0;
2070
2071 if (job->request_len < sizeof(struct fc_bsg_request) +
2072 sizeof(struct diag_mode_set)) {
2073 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2074 "3011 Received DIAG MODE request size:%d "
2075 "below the minimum size:%d\n",
2076 job->request_len,
2077 (int)(sizeof(struct fc_bsg_request) +
2078 sizeof(struct diag_mode_set)));
2079 rc = -EINVAL;
2080 goto job_done;
2081 }
2082
2083 loopback_mode = (struct diag_mode_set *)
2084 bsg_request->rqst_data.h_vendor.vendor_cmd;
2085 link_flags = loopback_mode->type;
2086 timeout = loopback_mode->timeout * 100;
2087
2088 if (loopback_mode->physical_link == -1)
2089 link_no = phba->sli4_hba.lnk_info.lnk_no;
2090 else
2091 link_no = loopback_mode->physical_link;
2092
2093 if (link_flags == DISABLE_LOOP_BACK) {
2094 rc = lpfc_sli4_bsg_set_loopback_mode(phba,
2095 LPFC_DIAG_LOOPBACK_TYPE_DISABLE,
2096 link_no);
2097 if (!rc) {
2098 /* Unset the need disable bit */
2099 phba->sli4_hba.conf_trunk &= ~((1 << link_no) << 4);
2100 }
2101 goto job_done;
2102 } else {
2103 /* Check if we need to disable the loopback state */
2104 if (phba->sli4_hba.conf_trunk & ((1 << link_no) << 4)) {
2105 rc = -EPERM;
2106 goto job_done;
2107 }
2108 }
2109
2110 rc = lpfc_bsg_diag_mode_enter(phba);
2111 if (rc)
2112 goto job_done;
2113
2114 /* indicate we are in loobpack diagnostic mode */
2115 spin_lock_irq(&phba->hbalock);
2116 phba->link_flag |= LS_LOOPBACK_MODE;
2117 spin_unlock_irq(&phba->hbalock);
2118
2119 /* reset port to start frome scratch */
2120 rc = lpfc_selective_reset(phba);
2121 if (rc)
2122 goto job_done;
2123
2124 /* bring the link to diagnostic mode */
2125 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
2126 "3129 Bring link to diagnostic state.\n");
2127
2128 rc = lpfc_sli4_bsg_set_link_diag_state(phba, 1);
2129 if (rc) {
2130 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2131 "3130 Failed to bring link to diagnostic "
2132 "state, rc:x%x\n", rc);
2133 goto loopback_mode_exit;
2134 }
2135
2136 /* wait for link down before proceeding */
2137 i = 0;
2138 while (phba->link_state != LPFC_LINK_DOWN) {
2139 if (i++ > timeout) {
2140 rc = -ETIMEDOUT;
2141 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
2142 "3131 Timeout waiting for link to "
2143 "diagnostic mode, timeout:%d ms\n",
2144 timeout * 10);
2145 goto loopback_mode_exit;
2146 }
2147 msleep(10);
2148 }
2149
2150 /* set up loopback mode */
2151 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
2152 "3132 Set up loopback mode:x%x\n", link_flags);
2153
2154 switch (link_flags) {
2155 case INTERNAL_LOOP_BACK:
2156 if (phba->sli4_hba.conf_trunk & (1 << link_no)) {
2157 rc = lpfc_sli4_bsg_set_loopback_mode(phba,
2158 LPFC_DIAG_LOOPBACK_TYPE_INTERNAL,
2159 link_no);
2160 } else {
2161 /* Trunk is configured, but link is not in this trunk */
2162 if (phba->sli4_hba.conf_trunk) {
2163 rc = -ELNRNG;
2164 goto loopback_mode_exit;
2165 }
2166
2167 rc = lpfc_sli4_bsg_set_loopback_mode(phba,
2168 LPFC_DIAG_LOOPBACK_TYPE_INTERNAL,
2169 link_no);
2170 }
2171
2172 if (!rc) {
2173 /* Set the need disable bit */
2174 phba->sli4_hba.conf_trunk |= (1 << link_no) << 4;
2175 }
2176
2177 break;
2178 case EXTERNAL_LOOP_BACK:
2179 if (phba->sli4_hba.conf_trunk & (1 << link_no)) {
2180 rc = lpfc_sli4_bsg_set_loopback_mode(phba,
2181 LPFC_DIAG_LOOPBACK_TYPE_EXTERNAL_TRUNKED,
2182 link_no);
2183 } else {
2184 /* Trunk is configured, but link is not in this trunk */
2185 if (phba->sli4_hba.conf_trunk) {
2186 rc = -ELNRNG;
2187 goto loopback_mode_exit;
2188 }
2189
2190 rc = lpfc_sli4_bsg_set_loopback_mode(phba,
2191 LPFC_DIAG_LOOPBACK_TYPE_SERDES,
2192 link_no);
2193 }
2194
2195 if (!rc) {
2196 /* Set the need disable bit */
2197 phba->sli4_hba.conf_trunk |= (1 << link_no) << 4;
2198 }
2199
2200 break;
2201 default:
2202 rc = -EINVAL;
2203 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
2204 "3141 Loopback mode:x%x not supported\n",
2205 link_flags);
2206 goto loopback_mode_exit;
2207 }
2208
2209 if (!rc) {
2210 /* wait for the link attention interrupt */
2211 msleep(100);
2212 i = 0;
2213 while (phba->link_state < LPFC_LINK_UP) {
2214 if (i++ > timeout) {
2215 rc = -ETIMEDOUT;
2216 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
2217 "3137 Timeout waiting for link up "
2218 "in loopback mode, timeout:%d ms\n",
2219 timeout * 10);
2220 break;
2221 }
2222 msleep(10);
2223 }
2224 }
2225
2226 /* port resource registration setup for loopback diagnostic */
2227 if (!rc) {
2228 /* set up a none zero myDID for loopback test */
2229 phba->pport->fc_myDID = 1;
2230 rc = lpfc_sli4_diag_fcport_reg_setup(phba);
2231 } else
2232 goto loopback_mode_exit;
2233
2234 if (!rc) {
2235 /* wait for the port ready */
2236 msleep(100);
2237 i = 0;
2238 while (phba->link_state != LPFC_HBA_READY) {
2239 if (i++ > timeout) {
2240 rc = -ETIMEDOUT;
2241 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
2242 "3133 Timeout waiting for port "
2243 "loopback mode ready, timeout:%d ms\n",
2244 timeout * 10);
2245 break;
2246 }
2247 msleep(10);
2248 }
2249 }
2250
2251 loopback_mode_exit:
2252 /* clear loopback diagnostic mode */
2253 if (rc) {
2254 spin_lock_irq(&phba->hbalock);
2255 phba->link_flag &= ~LS_LOOPBACK_MODE;
2256 spin_unlock_irq(&phba->hbalock);
2257 }
2258 lpfc_bsg_diag_mode_exit(phba);
2259
2260 job_done:
2261 /* make error code available to userspace */
2262 bsg_reply->result = rc;
2263 /* complete the job back to userspace if no error */
2264 if (rc == 0)
2265 bsg_job_done(job, bsg_reply->result,
2266 bsg_reply->reply_payload_rcv_len);
2267 return rc;
2268 }
2269
2270 /**
2271 * lpfc_bsg_diag_loopback_mode - bsg vendor command for diag loopback mode
2272 * @job: LPFC_BSG_VENDOR_DIAG_MODE
2273 *
2274 * This function is responsible for responding to check and dispatch bsg diag
2275 * command from the user to proper driver action routines.
2276 */
2277 static int
lpfc_bsg_diag_loopback_mode(struct bsg_job * job)2278 lpfc_bsg_diag_loopback_mode(struct bsg_job *job)
2279 {
2280 struct Scsi_Host *shost;
2281 struct lpfc_vport *vport;
2282 struct lpfc_hba *phba;
2283 int rc;
2284
2285 shost = fc_bsg_to_shost(job);
2286 if (!shost)
2287 return -ENODEV;
2288 vport = shost_priv(shost);
2289 if (!vport)
2290 return -ENODEV;
2291 phba = vport->phba;
2292 if (!phba)
2293 return -ENODEV;
2294
2295 if (phba->sli_rev < LPFC_SLI_REV4)
2296 rc = lpfc_sli3_bsg_diag_loopback_mode(phba, job);
2297 else if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
2298 LPFC_SLI_INTF_IF_TYPE_2)
2299 rc = lpfc_sli4_bsg_diag_loopback_mode(phba, job);
2300 else
2301 rc = -ENODEV;
2302
2303 return rc;
2304 }
2305
2306 /**
2307 * lpfc_sli4_bsg_diag_mode_end - sli4 bsg vendor command for ending diag mode
2308 * @job: LPFC_BSG_VENDOR_DIAG_MODE_END
2309 *
2310 * This function is responsible for responding to check and dispatch bsg diag
2311 * command from the user to proper driver action routines.
2312 */
2313 static int
lpfc_sli4_bsg_diag_mode_end(struct bsg_job * job)2314 lpfc_sli4_bsg_diag_mode_end(struct bsg_job *job)
2315 {
2316 struct fc_bsg_request *bsg_request = job->request;
2317 struct fc_bsg_reply *bsg_reply = job->reply;
2318 struct Scsi_Host *shost;
2319 struct lpfc_vport *vport;
2320 struct lpfc_hba *phba;
2321 struct diag_mode_set *loopback_mode_end_cmd;
2322 uint32_t timeout;
2323 int rc, i;
2324
2325 shost = fc_bsg_to_shost(job);
2326 if (!shost)
2327 return -ENODEV;
2328 vport = shost_priv(shost);
2329 if (!vport)
2330 return -ENODEV;
2331 phba = vport->phba;
2332 if (!phba)
2333 return -ENODEV;
2334
2335 if (phba->sli_rev < LPFC_SLI_REV4)
2336 return -ENODEV;
2337 if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
2338 LPFC_SLI_INTF_IF_TYPE_2)
2339 return -ENODEV;
2340
2341 /* clear loopback diagnostic mode */
2342 spin_lock_irq(&phba->hbalock);
2343 phba->link_flag &= ~LS_LOOPBACK_MODE;
2344 spin_unlock_irq(&phba->hbalock);
2345 loopback_mode_end_cmd = (struct diag_mode_set *)
2346 bsg_request->rqst_data.h_vendor.vendor_cmd;
2347 timeout = loopback_mode_end_cmd->timeout * 100;
2348
2349 rc = lpfc_sli4_bsg_set_link_diag_state(phba, 0);
2350 if (rc) {
2351 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2352 "3139 Failed to bring link to diagnostic "
2353 "state, rc:x%x\n", rc);
2354 goto loopback_mode_end_exit;
2355 }
2356
2357 /* wait for link down before proceeding */
2358 i = 0;
2359 while (phba->link_state != LPFC_LINK_DOWN) {
2360 if (i++ > timeout) {
2361 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
2362 "3140 Timeout waiting for link to "
2363 "diagnostic mode_end, timeout:%d ms\n",
2364 timeout * 10);
2365 /* there is nothing much we can do here */
2366 break;
2367 }
2368 msleep(10);
2369 }
2370
2371 /* reset port resource registrations */
2372 rc = lpfc_selective_reset(phba);
2373 phba->pport->fc_myDID = 0;
2374
2375 loopback_mode_end_exit:
2376 /* make return code available to userspace */
2377 bsg_reply->result = rc;
2378 /* complete the job back to userspace if no error */
2379 if (rc == 0)
2380 bsg_job_done(job, bsg_reply->result,
2381 bsg_reply->reply_payload_rcv_len);
2382 return rc;
2383 }
2384
2385 /**
2386 * lpfc_sli4_bsg_link_diag_test - sli4 bsg vendor command for diag link test
2387 * @job: LPFC_BSG_VENDOR_DIAG_LINK_TEST
2388 *
2389 * This function is to perform SLI4 diag link test request from the user
2390 * applicaiton.
2391 */
2392 static int
lpfc_sli4_bsg_link_diag_test(struct bsg_job * job)2393 lpfc_sli4_bsg_link_diag_test(struct bsg_job *job)
2394 {
2395 struct fc_bsg_request *bsg_request = job->request;
2396 struct fc_bsg_reply *bsg_reply = job->reply;
2397 struct Scsi_Host *shost;
2398 struct lpfc_vport *vport;
2399 struct lpfc_hba *phba;
2400 LPFC_MBOXQ_t *pmboxq;
2401 struct sli4_link_diag *link_diag_test_cmd;
2402 uint32_t req_len, alloc_len;
2403 struct lpfc_mbx_run_link_diag_test *run_link_diag_test;
2404 union lpfc_sli4_cfg_shdr *shdr;
2405 uint32_t shdr_status, shdr_add_status;
2406 struct diag_status *diag_status_reply;
2407 int mbxstatus, rc = -ENODEV, rc1 = 0;
2408
2409 shost = fc_bsg_to_shost(job);
2410 if (!shost)
2411 goto job_error;
2412
2413 vport = shost_priv(shost);
2414 if (!vport)
2415 goto job_error;
2416
2417 phba = vport->phba;
2418 if (!phba)
2419 goto job_error;
2420
2421
2422 if (phba->sli_rev < LPFC_SLI_REV4)
2423 goto job_error;
2424
2425 if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
2426 LPFC_SLI_INTF_IF_TYPE_2)
2427 goto job_error;
2428
2429 if (job->request_len < sizeof(struct fc_bsg_request) +
2430 sizeof(struct sli4_link_diag)) {
2431 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2432 "3013 Received LINK DIAG TEST request "
2433 " size:%d below the minimum size:%d\n",
2434 job->request_len,
2435 (int)(sizeof(struct fc_bsg_request) +
2436 sizeof(struct sli4_link_diag)));
2437 rc = -EINVAL;
2438 goto job_error;
2439 }
2440
2441 rc = lpfc_bsg_diag_mode_enter(phba);
2442 if (rc)
2443 goto job_error;
2444
2445 link_diag_test_cmd = (struct sli4_link_diag *)
2446 bsg_request->rqst_data.h_vendor.vendor_cmd;
2447
2448 rc = lpfc_sli4_bsg_set_link_diag_state(phba, 1);
2449
2450 if (rc)
2451 goto job_error;
2452
2453 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2454 if (!pmboxq)
2455 goto link_diag_test_exit;
2456
2457 req_len = (sizeof(struct lpfc_mbx_set_link_diag_state) -
2458 sizeof(struct lpfc_sli4_cfg_mhdr));
2459 alloc_len = lpfc_sli4_config(phba, pmboxq, LPFC_MBOX_SUBSYSTEM_FCOE,
2460 LPFC_MBOX_OPCODE_FCOE_LINK_DIAG_STATE,
2461 req_len, LPFC_SLI4_MBX_EMBED);
2462 if (alloc_len != req_len) {
2463 rc = -ENOMEM;
2464 goto link_diag_test_exit;
2465 }
2466
2467 run_link_diag_test = &pmboxq->u.mqe.un.link_diag_test;
2468 bf_set(lpfc_mbx_run_diag_test_link_num, &run_link_diag_test->u.req,
2469 phba->sli4_hba.lnk_info.lnk_no);
2470 bf_set(lpfc_mbx_run_diag_test_link_type, &run_link_diag_test->u.req,
2471 phba->sli4_hba.lnk_info.lnk_tp);
2472 bf_set(lpfc_mbx_run_diag_test_test_id, &run_link_diag_test->u.req,
2473 link_diag_test_cmd->test_id);
2474 bf_set(lpfc_mbx_run_diag_test_loops, &run_link_diag_test->u.req,
2475 link_diag_test_cmd->loops);
2476 bf_set(lpfc_mbx_run_diag_test_test_ver, &run_link_diag_test->u.req,
2477 link_diag_test_cmd->test_version);
2478 bf_set(lpfc_mbx_run_diag_test_err_act, &run_link_diag_test->u.req,
2479 link_diag_test_cmd->error_action);
2480
2481 mbxstatus = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
2482
2483 shdr = (union lpfc_sli4_cfg_shdr *)
2484 &pmboxq->u.mqe.un.sli4_config.header.cfg_shdr;
2485 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
2486 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
2487 if (shdr_status || shdr_add_status || mbxstatus) {
2488 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
2489 "3010 Run link diag test mailbox failed with "
2490 "mbx_status x%x status x%x, add_status x%x\n",
2491 mbxstatus, shdr_status, shdr_add_status);
2492 }
2493
2494 diag_status_reply = (struct diag_status *)
2495 bsg_reply->reply_data.vendor_reply.vendor_rsp;
2496
2497 if (job->reply_len < sizeof(*bsg_reply) + sizeof(*diag_status_reply)) {
2498 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2499 "3012 Received Run link diag test reply "
2500 "below minimum size (%d): reply_len:%d\n",
2501 (int)(sizeof(*bsg_reply) +
2502 sizeof(*diag_status_reply)),
2503 job->reply_len);
2504 rc = -EINVAL;
2505 goto job_error;
2506 }
2507
2508 diag_status_reply->mbox_status = mbxstatus;
2509 diag_status_reply->shdr_status = shdr_status;
2510 diag_status_reply->shdr_add_status = shdr_add_status;
2511
2512 link_diag_test_exit:
2513 rc1 = lpfc_sli4_bsg_set_link_diag_state(phba, 0);
2514
2515 if (pmboxq)
2516 mempool_free(pmboxq, phba->mbox_mem_pool);
2517
2518 lpfc_bsg_diag_mode_exit(phba);
2519
2520 job_error:
2521 /* make error code available to userspace */
2522 if (rc1 && !rc)
2523 rc = rc1;
2524 bsg_reply->result = rc;
2525 /* complete the job back to userspace if no error */
2526 if (rc == 0)
2527 bsg_job_done(job, bsg_reply->result,
2528 bsg_reply->reply_payload_rcv_len);
2529 return rc;
2530 }
2531
2532 /**
2533 * lpfcdiag_loop_self_reg - obtains a remote port login id
2534 * @phba: Pointer to HBA context object
2535 * @rpi: Pointer to a remote port login id
2536 *
2537 * This function obtains a remote port login id so the diag loopback test
2538 * can send and receive its own unsolicited CT command.
2539 **/
lpfcdiag_loop_self_reg(struct lpfc_hba * phba,uint16_t * rpi)2540 static int lpfcdiag_loop_self_reg(struct lpfc_hba *phba, uint16_t *rpi)
2541 {
2542 LPFC_MBOXQ_t *mbox;
2543 struct lpfc_dmabuf *dmabuff;
2544 int status;
2545
2546 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2547 if (!mbox)
2548 return -ENOMEM;
2549
2550 if (phba->sli_rev < LPFC_SLI_REV4)
2551 status = lpfc_reg_rpi(phba, 0, phba->pport->fc_myDID,
2552 (uint8_t *)&phba->pport->fc_sparam,
2553 mbox, *rpi);
2554 else {
2555 *rpi = lpfc_sli4_alloc_rpi(phba);
2556 if (*rpi == LPFC_RPI_ALLOC_ERROR) {
2557 mempool_free(mbox, phba->mbox_mem_pool);
2558 return -EBUSY;
2559 }
2560 status = lpfc_reg_rpi(phba, phba->pport->vpi,
2561 phba->pport->fc_myDID,
2562 (uint8_t *)&phba->pport->fc_sparam,
2563 mbox, *rpi);
2564 }
2565
2566 if (status) {
2567 mempool_free(mbox, phba->mbox_mem_pool);
2568 if (phba->sli_rev == LPFC_SLI_REV4)
2569 lpfc_sli4_free_rpi(phba, *rpi);
2570 return -ENOMEM;
2571 }
2572
2573 dmabuff = (struct lpfc_dmabuf *)mbox->ctx_buf;
2574 mbox->ctx_buf = NULL;
2575 mbox->ctx_ndlp = NULL;
2576 status = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2577
2578 if ((status != MBX_SUCCESS) || (mbox->u.mb.mbxStatus)) {
2579 lpfc_mbuf_free(phba, dmabuff->virt, dmabuff->phys);
2580 kfree(dmabuff);
2581 if (status != MBX_TIMEOUT)
2582 mempool_free(mbox, phba->mbox_mem_pool);
2583 if (phba->sli_rev == LPFC_SLI_REV4)
2584 lpfc_sli4_free_rpi(phba, *rpi);
2585 return -ENODEV;
2586 }
2587
2588 if (phba->sli_rev < LPFC_SLI_REV4)
2589 *rpi = mbox->u.mb.un.varWords[0];
2590
2591 lpfc_mbuf_free(phba, dmabuff->virt, dmabuff->phys);
2592 kfree(dmabuff);
2593 mempool_free(mbox, phba->mbox_mem_pool);
2594 return 0;
2595 }
2596
2597 /**
2598 * lpfcdiag_loop_self_unreg - unregs from the rpi
2599 * @phba: Pointer to HBA context object
2600 * @rpi: Remote port login id
2601 *
2602 * This function unregisters the rpi obtained in lpfcdiag_loop_self_reg
2603 **/
lpfcdiag_loop_self_unreg(struct lpfc_hba * phba,uint16_t rpi)2604 static int lpfcdiag_loop_self_unreg(struct lpfc_hba *phba, uint16_t rpi)
2605 {
2606 LPFC_MBOXQ_t *mbox;
2607 int status;
2608
2609 /* Allocate mboxq structure */
2610 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2611 if (mbox == NULL)
2612 return -ENOMEM;
2613
2614 if (phba->sli_rev < LPFC_SLI_REV4)
2615 lpfc_unreg_login(phba, 0, rpi, mbox);
2616 else
2617 lpfc_unreg_login(phba, phba->pport->vpi,
2618 phba->sli4_hba.rpi_ids[rpi], mbox);
2619
2620 status = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2621
2622 if ((status != MBX_SUCCESS) || (mbox->u.mb.mbxStatus)) {
2623 if (status != MBX_TIMEOUT)
2624 mempool_free(mbox, phba->mbox_mem_pool);
2625 return -EIO;
2626 }
2627 mempool_free(mbox, phba->mbox_mem_pool);
2628 if (phba->sli_rev == LPFC_SLI_REV4)
2629 lpfc_sli4_free_rpi(phba, rpi);
2630 return 0;
2631 }
2632
2633 /**
2634 * lpfcdiag_loop_get_xri - obtains the transmit and receive ids
2635 * @phba: Pointer to HBA context object
2636 * @rpi: Remote port login id
2637 * @txxri: Pointer to transmit exchange id
2638 * @rxxri: Pointer to response exchabge id
2639 *
2640 * This function obtains the transmit and receive ids required to send
2641 * an unsolicited ct command with a payload. A special lpfc FsType and CmdRsp
2642 * flags are used to the unsolicted response handler is able to process
2643 * the ct command sent on the same port.
2644 **/
lpfcdiag_loop_get_xri(struct lpfc_hba * phba,uint16_t rpi,uint16_t * txxri,uint16_t * rxxri)2645 static int lpfcdiag_loop_get_xri(struct lpfc_hba *phba, uint16_t rpi,
2646 uint16_t *txxri, uint16_t * rxxri)
2647 {
2648 struct lpfc_bsg_event *evt;
2649 struct lpfc_iocbq *cmdiocbq, *rspiocbq;
2650 IOCB_t *cmd, *rsp;
2651 struct lpfc_dmabuf *dmabuf;
2652 struct ulp_bde64 *bpl = NULL;
2653 struct lpfc_sli_ct_request *ctreq = NULL;
2654 int ret_val = 0;
2655 int time_left;
2656 int iocb_stat = IOCB_SUCCESS;
2657 unsigned long flags;
2658
2659 *txxri = 0;
2660 *rxxri = 0;
2661 evt = lpfc_bsg_event_new(FC_REG_CT_EVENT, current->pid,
2662 SLI_CT_ELX_LOOPBACK);
2663 if (!evt)
2664 return -ENOMEM;
2665
2666 spin_lock_irqsave(&phba->ct_ev_lock, flags);
2667 list_add(&evt->node, &phba->ct_ev_waiters);
2668 lpfc_bsg_event_ref(evt);
2669 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2670
2671 cmdiocbq = lpfc_sli_get_iocbq(phba);
2672 rspiocbq = lpfc_sli_get_iocbq(phba);
2673
2674 dmabuf = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2675 if (dmabuf) {
2676 dmabuf->virt = lpfc_mbuf_alloc(phba, 0, &dmabuf->phys);
2677 if (dmabuf->virt) {
2678 INIT_LIST_HEAD(&dmabuf->list);
2679 bpl = (struct ulp_bde64 *) dmabuf->virt;
2680 memset(bpl, 0, sizeof(*bpl));
2681 ctreq = (struct lpfc_sli_ct_request *)(bpl + 1);
2682 bpl->addrHigh =
2683 le32_to_cpu(putPaddrHigh(dmabuf->phys +
2684 sizeof(*bpl)));
2685 bpl->addrLow =
2686 le32_to_cpu(putPaddrLow(dmabuf->phys +
2687 sizeof(*bpl)));
2688 bpl->tus.f.bdeFlags = 0;
2689 bpl->tus.f.bdeSize = ELX_LOOPBACK_HEADER_SZ;
2690 bpl->tus.w = le32_to_cpu(bpl->tus.w);
2691 }
2692 }
2693
2694 if (cmdiocbq == NULL || rspiocbq == NULL ||
2695 dmabuf == NULL || bpl == NULL || ctreq == NULL ||
2696 dmabuf->virt == NULL) {
2697 ret_val = -ENOMEM;
2698 goto err_get_xri_exit;
2699 }
2700
2701 cmd = &cmdiocbq->iocb;
2702 rsp = &rspiocbq->iocb;
2703
2704 memset(ctreq, 0, ELX_LOOPBACK_HEADER_SZ);
2705
2706 ctreq->RevisionId.bits.Revision = SLI_CT_REVISION;
2707 ctreq->RevisionId.bits.InId = 0;
2708 ctreq->FsType = SLI_CT_ELX_LOOPBACK;
2709 ctreq->FsSubType = 0;
2710 ctreq->CommandResponse.bits.CmdRsp = ELX_LOOPBACK_XRI_SETUP;
2711 ctreq->CommandResponse.bits.Size = 0;
2712
2713
2714 cmd->un.xseq64.bdl.addrHigh = putPaddrHigh(dmabuf->phys);
2715 cmd->un.xseq64.bdl.addrLow = putPaddrLow(dmabuf->phys);
2716 cmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
2717 cmd->un.xseq64.bdl.bdeSize = sizeof(*bpl);
2718
2719 cmd->un.xseq64.w5.hcsw.Fctl = LA;
2720 cmd->un.xseq64.w5.hcsw.Dfctl = 0;
2721 cmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL;
2722 cmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT;
2723
2724 cmd->ulpCommand = CMD_XMIT_SEQUENCE64_CR;
2725 cmd->ulpBdeCount = 1;
2726 cmd->ulpLe = 1;
2727 cmd->ulpClass = CLASS3;
2728 cmd->ulpContext = rpi;
2729
2730 cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
2731 cmdiocbq->vport = phba->pport;
2732 cmdiocbq->iocb_cmpl = NULL;
2733
2734 iocb_stat = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq,
2735 rspiocbq,
2736 (phba->fc_ratov * 2)
2737 + LPFC_DRVR_TIMEOUT);
2738 if ((iocb_stat != IOCB_SUCCESS) || (rsp->ulpStatus != IOSTAT_SUCCESS)) {
2739 ret_val = -EIO;
2740 goto err_get_xri_exit;
2741 }
2742 *txxri = rsp->ulpContext;
2743
2744 evt->waiting = 1;
2745 evt->wait_time_stamp = jiffies;
2746 time_left = wait_event_interruptible_timeout(
2747 evt->wq, !list_empty(&evt->events_to_see),
2748 msecs_to_jiffies(1000 *
2749 ((phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT)));
2750 if (list_empty(&evt->events_to_see))
2751 ret_val = (time_left) ? -EINTR : -ETIMEDOUT;
2752 else {
2753 spin_lock_irqsave(&phba->ct_ev_lock, flags);
2754 list_move(evt->events_to_see.prev, &evt->events_to_get);
2755 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2756 *rxxri = (list_entry(evt->events_to_get.prev,
2757 typeof(struct event_data),
2758 node))->immed_dat;
2759 }
2760 evt->waiting = 0;
2761
2762 err_get_xri_exit:
2763 spin_lock_irqsave(&phba->ct_ev_lock, flags);
2764 lpfc_bsg_event_unref(evt); /* release ref */
2765 lpfc_bsg_event_unref(evt); /* delete */
2766 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2767
2768 if (dmabuf) {
2769 if (dmabuf->virt)
2770 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
2771 kfree(dmabuf);
2772 }
2773
2774 if (cmdiocbq && (iocb_stat != IOCB_TIMEDOUT))
2775 lpfc_sli_release_iocbq(phba, cmdiocbq);
2776 if (rspiocbq)
2777 lpfc_sli_release_iocbq(phba, rspiocbq);
2778 return ret_val;
2779 }
2780
2781 /**
2782 * lpfc_bsg_dma_page_alloc - allocate a bsg mbox page sized dma buffers
2783 * @phba: Pointer to HBA context object
2784 *
2785 * This function allocates BSG_MBOX_SIZE (4KB) page size dma buffer and
2786 * returns the pointer to the buffer.
2787 **/
2788 static struct lpfc_dmabuf *
lpfc_bsg_dma_page_alloc(struct lpfc_hba * phba)2789 lpfc_bsg_dma_page_alloc(struct lpfc_hba *phba)
2790 {
2791 struct lpfc_dmabuf *dmabuf;
2792 struct pci_dev *pcidev = phba->pcidev;
2793
2794 /* allocate dma buffer struct */
2795 dmabuf = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2796 if (!dmabuf)
2797 return NULL;
2798
2799 INIT_LIST_HEAD(&dmabuf->list);
2800
2801 /* now, allocate dma buffer */
2802 dmabuf->virt = dma_alloc_coherent(&pcidev->dev, BSG_MBOX_SIZE,
2803 &(dmabuf->phys), GFP_KERNEL);
2804
2805 if (!dmabuf->virt) {
2806 kfree(dmabuf);
2807 return NULL;
2808 }
2809
2810 return dmabuf;
2811 }
2812
2813 /**
2814 * lpfc_bsg_dma_page_free - free a bsg mbox page sized dma buffer
2815 * @phba: Pointer to HBA context object.
2816 * @dmabuf: Pointer to the bsg mbox page sized dma buffer descriptor.
2817 *
2818 * This routine just simply frees a dma buffer and its associated buffer
2819 * descriptor referred by @dmabuf.
2820 **/
2821 static void
lpfc_bsg_dma_page_free(struct lpfc_hba * phba,struct lpfc_dmabuf * dmabuf)2822 lpfc_bsg_dma_page_free(struct lpfc_hba *phba, struct lpfc_dmabuf *dmabuf)
2823 {
2824 struct pci_dev *pcidev = phba->pcidev;
2825
2826 if (!dmabuf)
2827 return;
2828
2829 if (dmabuf->virt)
2830 dma_free_coherent(&pcidev->dev, BSG_MBOX_SIZE,
2831 dmabuf->virt, dmabuf->phys);
2832 kfree(dmabuf);
2833 return;
2834 }
2835
2836 /**
2837 * lpfc_bsg_dma_page_list_free - free a list of bsg mbox page sized dma buffers
2838 * @phba: Pointer to HBA context object.
2839 * @dmabuf_list: Pointer to a list of bsg mbox page sized dma buffer descs.
2840 *
2841 * This routine just simply frees all dma buffers and their associated buffer
2842 * descriptors referred by @dmabuf_list.
2843 **/
2844 static void
lpfc_bsg_dma_page_list_free(struct lpfc_hba * phba,struct list_head * dmabuf_list)2845 lpfc_bsg_dma_page_list_free(struct lpfc_hba *phba,
2846 struct list_head *dmabuf_list)
2847 {
2848 struct lpfc_dmabuf *dmabuf, *next_dmabuf;
2849
2850 if (list_empty(dmabuf_list))
2851 return;
2852
2853 list_for_each_entry_safe(dmabuf, next_dmabuf, dmabuf_list, list) {
2854 list_del_init(&dmabuf->list);
2855 lpfc_bsg_dma_page_free(phba, dmabuf);
2856 }
2857 return;
2858 }
2859
2860 /**
2861 * diag_cmd_data_alloc - fills in a bde struct with dma buffers
2862 * @phba: Pointer to HBA context object
2863 * @bpl: Pointer to 64 bit bde structure
2864 * @size: Number of bytes to process
2865 * @nocopydata: Flag to copy user data into the allocated buffer
2866 *
2867 * This function allocates page size buffers and populates an lpfc_dmabufext.
2868 * If allowed the user data pointed to with indataptr is copied into the kernel
2869 * memory. The chained list of page size buffers is returned.
2870 **/
2871 static struct lpfc_dmabufext *
diag_cmd_data_alloc(struct lpfc_hba * phba,struct ulp_bde64 * bpl,uint32_t size,int nocopydata)2872 diag_cmd_data_alloc(struct lpfc_hba *phba,
2873 struct ulp_bde64 *bpl, uint32_t size,
2874 int nocopydata)
2875 {
2876 struct lpfc_dmabufext *mlist = NULL;
2877 struct lpfc_dmabufext *dmp;
2878 int cnt, offset = 0, i = 0;
2879 struct pci_dev *pcidev;
2880
2881 pcidev = phba->pcidev;
2882
2883 while (size) {
2884 /* We get chunks of 4K */
2885 if (size > BUF_SZ_4K)
2886 cnt = BUF_SZ_4K;
2887 else
2888 cnt = size;
2889
2890 /* allocate struct lpfc_dmabufext buffer header */
2891 dmp = kmalloc(sizeof(struct lpfc_dmabufext), GFP_KERNEL);
2892 if (!dmp)
2893 goto out;
2894
2895 INIT_LIST_HEAD(&dmp->dma.list);
2896
2897 /* Queue it to a linked list */
2898 if (mlist)
2899 list_add_tail(&dmp->dma.list, &mlist->dma.list);
2900 else
2901 mlist = dmp;
2902
2903 /* allocate buffer */
2904 dmp->dma.virt = dma_alloc_coherent(&pcidev->dev,
2905 cnt,
2906 &(dmp->dma.phys),
2907 GFP_KERNEL);
2908
2909 if (!dmp->dma.virt)
2910 goto out;
2911
2912 dmp->size = cnt;
2913
2914 if (nocopydata) {
2915 bpl->tus.f.bdeFlags = 0;
2916 } else {
2917 memset((uint8_t *)dmp->dma.virt, 0, cnt);
2918 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
2919 }
2920
2921 /* build buffer ptr list for IOCB */
2922 bpl->addrLow = le32_to_cpu(putPaddrLow(dmp->dma.phys));
2923 bpl->addrHigh = le32_to_cpu(putPaddrHigh(dmp->dma.phys));
2924 bpl->tus.f.bdeSize = (ushort) cnt;
2925 bpl->tus.w = le32_to_cpu(bpl->tus.w);
2926 bpl++;
2927
2928 i++;
2929 offset += cnt;
2930 size -= cnt;
2931 }
2932
2933 if (mlist) {
2934 mlist->flag = i;
2935 return mlist;
2936 }
2937 out:
2938 diag_cmd_data_free(phba, mlist);
2939 return NULL;
2940 }
2941
2942 /**
2943 * lpfcdiag_loop_post_rxbufs - post the receive buffers for an unsol CT cmd
2944 * @phba: Pointer to HBA context object
2945 * @rxxri: Receive exchange id
2946 * @len: Number of data bytes
2947 *
2948 * This function allocates and posts a data buffer of sufficient size to receive
2949 * an unsolicted CT command.
2950 **/
lpfcdiag_loop_post_rxbufs(struct lpfc_hba * phba,uint16_t rxxri,size_t len)2951 static int lpfcdiag_loop_post_rxbufs(struct lpfc_hba *phba, uint16_t rxxri,
2952 size_t len)
2953 {
2954 struct lpfc_sli_ring *pring;
2955 struct lpfc_iocbq *cmdiocbq;
2956 IOCB_t *cmd = NULL;
2957 struct list_head head, *curr, *next;
2958 struct lpfc_dmabuf *rxbmp;
2959 struct lpfc_dmabuf *dmp;
2960 struct lpfc_dmabuf *mp[2] = {NULL, NULL};
2961 struct ulp_bde64 *rxbpl = NULL;
2962 uint32_t num_bde;
2963 struct lpfc_dmabufext *rxbuffer = NULL;
2964 int ret_val = 0;
2965 int iocb_stat;
2966 int i = 0;
2967
2968 pring = lpfc_phba_elsring(phba);
2969
2970 cmdiocbq = lpfc_sli_get_iocbq(phba);
2971 rxbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2972 if (rxbmp != NULL) {
2973 rxbmp->virt = lpfc_mbuf_alloc(phba, 0, &rxbmp->phys);
2974 if (rxbmp->virt) {
2975 INIT_LIST_HEAD(&rxbmp->list);
2976 rxbpl = (struct ulp_bde64 *) rxbmp->virt;
2977 rxbuffer = diag_cmd_data_alloc(phba, rxbpl, len, 0);
2978 }
2979 }
2980
2981 if (!cmdiocbq || !rxbmp || !rxbpl || !rxbuffer || !pring) {
2982 ret_val = -ENOMEM;
2983 goto err_post_rxbufs_exit;
2984 }
2985
2986 /* Queue buffers for the receive exchange */
2987 num_bde = (uint32_t)rxbuffer->flag;
2988 dmp = &rxbuffer->dma;
2989
2990 cmd = &cmdiocbq->iocb;
2991 i = 0;
2992
2993 INIT_LIST_HEAD(&head);
2994 list_add_tail(&head, &dmp->list);
2995 list_for_each_safe(curr, next, &head) {
2996 mp[i] = list_entry(curr, struct lpfc_dmabuf, list);
2997 list_del(curr);
2998
2999 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
3000 mp[i]->buffer_tag = lpfc_sli_get_buffer_tag(phba);
3001 cmd->un.quexri64cx.buff.bde.addrHigh =
3002 putPaddrHigh(mp[i]->phys);
3003 cmd->un.quexri64cx.buff.bde.addrLow =
3004 putPaddrLow(mp[i]->phys);
3005 cmd->un.quexri64cx.buff.bde.tus.f.bdeSize =
3006 ((struct lpfc_dmabufext *)mp[i])->size;
3007 cmd->un.quexri64cx.buff.buffer_tag = mp[i]->buffer_tag;
3008 cmd->ulpCommand = CMD_QUE_XRI64_CX;
3009 cmd->ulpPU = 0;
3010 cmd->ulpLe = 1;
3011 cmd->ulpBdeCount = 1;
3012 cmd->unsli3.que_xri64cx_ext_words.ebde_count = 0;
3013
3014 } else {
3015 cmd->un.cont64[i].addrHigh = putPaddrHigh(mp[i]->phys);
3016 cmd->un.cont64[i].addrLow = putPaddrLow(mp[i]->phys);
3017 cmd->un.cont64[i].tus.f.bdeSize =
3018 ((struct lpfc_dmabufext *)mp[i])->size;
3019 cmd->ulpBdeCount = ++i;
3020
3021 if ((--num_bde > 0) && (i < 2))
3022 continue;
3023
3024 cmd->ulpCommand = CMD_QUE_XRI_BUF64_CX;
3025 cmd->ulpLe = 1;
3026 }
3027
3028 cmd->ulpClass = CLASS3;
3029 cmd->ulpContext = rxxri;
3030
3031 iocb_stat = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq,
3032 0);
3033 if (iocb_stat == IOCB_ERROR) {
3034 diag_cmd_data_free(phba,
3035 (struct lpfc_dmabufext *)mp[0]);
3036 if (mp[1])
3037 diag_cmd_data_free(phba,
3038 (struct lpfc_dmabufext *)mp[1]);
3039 dmp = list_entry(next, struct lpfc_dmabuf, list);
3040 ret_val = -EIO;
3041 goto err_post_rxbufs_exit;
3042 }
3043
3044 lpfc_sli_ringpostbuf_put(phba, pring, mp[0]);
3045 if (mp[1]) {
3046 lpfc_sli_ringpostbuf_put(phba, pring, mp[1]);
3047 mp[1] = NULL;
3048 }
3049
3050 /* The iocb was freed by lpfc_sli_issue_iocb */
3051 cmdiocbq = lpfc_sli_get_iocbq(phba);
3052 if (!cmdiocbq) {
3053 dmp = list_entry(next, struct lpfc_dmabuf, list);
3054 ret_val = -EIO;
3055 goto err_post_rxbufs_exit;
3056 }
3057
3058 cmd = &cmdiocbq->iocb;
3059 i = 0;
3060 }
3061 list_del(&head);
3062
3063 err_post_rxbufs_exit:
3064
3065 if (rxbmp) {
3066 if (rxbmp->virt)
3067 lpfc_mbuf_free(phba, rxbmp->virt, rxbmp->phys);
3068 kfree(rxbmp);
3069 }
3070
3071 if (cmdiocbq)
3072 lpfc_sli_release_iocbq(phba, cmdiocbq);
3073 return ret_val;
3074 }
3075
3076 /**
3077 * lpfc_bsg_diag_loopback_run - run loopback on a port by issue ct cmd to itself
3078 * @job: LPFC_BSG_VENDOR_DIAG_TEST fc_bsg_job
3079 *
3080 * This function receives a user data buffer to be transmitted and received on
3081 * the same port, the link must be up and in loopback mode prior
3082 * to being called.
3083 * 1. A kernel buffer is allocated to copy the user data into.
3084 * 2. The port registers with "itself".
3085 * 3. The transmit and receive exchange ids are obtained.
3086 * 4. The receive exchange id is posted.
3087 * 5. A new els loopback event is created.
3088 * 6. The command and response iocbs are allocated.
3089 * 7. The cmd iocb FsType is set to elx loopback and the CmdRsp to looppback.
3090 *
3091 * This function is meant to be called n times while the port is in loopback
3092 * so it is the apps responsibility to issue a reset to take the port out
3093 * of loopback mode.
3094 **/
3095 static int
lpfc_bsg_diag_loopback_run(struct bsg_job * job)3096 lpfc_bsg_diag_loopback_run(struct bsg_job *job)
3097 {
3098 struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
3099 struct fc_bsg_reply *bsg_reply = job->reply;
3100 struct lpfc_hba *phba = vport->phba;
3101 struct lpfc_bsg_event *evt;
3102 struct event_data *evdat;
3103 struct lpfc_sli *psli = &phba->sli;
3104 uint32_t size;
3105 uint32_t full_size;
3106 size_t segment_len = 0, segment_offset = 0, current_offset = 0;
3107 uint16_t rpi = 0;
3108 struct lpfc_iocbq *cmdiocbq, *rspiocbq = NULL;
3109 IOCB_t *cmd, *rsp = NULL;
3110 struct lpfc_sli_ct_request *ctreq;
3111 struct lpfc_dmabuf *txbmp;
3112 struct ulp_bde64 *txbpl = NULL;
3113 struct lpfc_dmabufext *txbuffer = NULL;
3114 struct list_head head;
3115 struct lpfc_dmabuf *curr;
3116 uint16_t txxri = 0, rxxri;
3117 uint32_t num_bde;
3118 uint8_t *ptr = NULL, *rx_databuf = NULL;
3119 int rc = 0;
3120 int time_left;
3121 int iocb_stat = IOCB_SUCCESS;
3122 unsigned long flags;
3123 void *dataout = NULL;
3124 uint32_t total_mem;
3125
3126 /* in case no data is returned return just the return code */
3127 bsg_reply->reply_payload_rcv_len = 0;
3128
3129 if (job->request_len <
3130 sizeof(struct fc_bsg_request) + sizeof(struct diag_mode_test)) {
3131 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3132 "2739 Received DIAG TEST request below minimum "
3133 "size\n");
3134 rc = -EINVAL;
3135 goto loopback_test_exit;
3136 }
3137
3138 if (job->request_payload.payload_len !=
3139 job->reply_payload.payload_len) {
3140 rc = -EINVAL;
3141 goto loopback_test_exit;
3142 }
3143
3144 if ((phba->link_state == LPFC_HBA_ERROR) ||
3145 (psli->sli_flag & LPFC_BLOCK_MGMT_IO) ||
3146 (!(psli->sli_flag & LPFC_SLI_ACTIVE))) {
3147 rc = -EACCES;
3148 goto loopback_test_exit;
3149 }
3150
3151 if (!lpfc_is_link_up(phba) || !(phba->link_flag & LS_LOOPBACK_MODE)) {
3152 rc = -EACCES;
3153 goto loopback_test_exit;
3154 }
3155
3156 size = job->request_payload.payload_len;
3157 full_size = size + ELX_LOOPBACK_HEADER_SZ; /* plus the header */
3158
3159 if ((size == 0) || (size > 80 * BUF_SZ_4K)) {
3160 rc = -ERANGE;
3161 goto loopback_test_exit;
3162 }
3163
3164 if (full_size >= BUF_SZ_4K) {
3165 /*
3166 * Allocate memory for ioctl data. If buffer is bigger than 64k,
3167 * then we allocate 64k and re-use that buffer over and over to
3168 * xfer the whole block. This is because Linux kernel has a
3169 * problem allocating more than 120k of kernel space memory. Saw
3170 * problem with GET_FCPTARGETMAPPING...
3171 */
3172 if (size <= (64 * 1024))
3173 total_mem = full_size;
3174 else
3175 total_mem = 64 * 1024;
3176 } else
3177 /* Allocate memory for ioctl data */
3178 total_mem = BUF_SZ_4K;
3179
3180 dataout = kmalloc(total_mem, GFP_KERNEL);
3181 if (dataout == NULL) {
3182 rc = -ENOMEM;
3183 goto loopback_test_exit;
3184 }
3185
3186 ptr = dataout;
3187 ptr += ELX_LOOPBACK_HEADER_SZ;
3188 sg_copy_to_buffer(job->request_payload.sg_list,
3189 job->request_payload.sg_cnt,
3190 ptr, size);
3191 rc = lpfcdiag_loop_self_reg(phba, &rpi);
3192 if (rc)
3193 goto loopback_test_exit;
3194
3195 if (phba->sli_rev < LPFC_SLI_REV4) {
3196 rc = lpfcdiag_loop_get_xri(phba, rpi, &txxri, &rxxri);
3197 if (rc) {
3198 lpfcdiag_loop_self_unreg(phba, rpi);
3199 goto loopback_test_exit;
3200 }
3201
3202 rc = lpfcdiag_loop_post_rxbufs(phba, rxxri, full_size);
3203 if (rc) {
3204 lpfcdiag_loop_self_unreg(phba, rpi);
3205 goto loopback_test_exit;
3206 }
3207 }
3208 evt = lpfc_bsg_event_new(FC_REG_CT_EVENT, current->pid,
3209 SLI_CT_ELX_LOOPBACK);
3210 if (!evt) {
3211 lpfcdiag_loop_self_unreg(phba, rpi);
3212 rc = -ENOMEM;
3213 goto loopback_test_exit;
3214 }
3215
3216 spin_lock_irqsave(&phba->ct_ev_lock, flags);
3217 list_add(&evt->node, &phba->ct_ev_waiters);
3218 lpfc_bsg_event_ref(evt);
3219 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3220
3221 cmdiocbq = lpfc_sli_get_iocbq(phba);
3222 if (phba->sli_rev < LPFC_SLI_REV4)
3223 rspiocbq = lpfc_sli_get_iocbq(phba);
3224 txbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
3225
3226 if (txbmp) {
3227 txbmp->virt = lpfc_mbuf_alloc(phba, 0, &txbmp->phys);
3228 if (txbmp->virt) {
3229 INIT_LIST_HEAD(&txbmp->list);
3230 txbpl = (struct ulp_bde64 *) txbmp->virt;
3231 txbuffer = diag_cmd_data_alloc(phba,
3232 txbpl, full_size, 0);
3233 }
3234 }
3235
3236 if (!cmdiocbq || !txbmp || !txbpl || !txbuffer || !txbmp->virt) {
3237 rc = -ENOMEM;
3238 goto err_loopback_test_exit;
3239 }
3240 if ((phba->sli_rev < LPFC_SLI_REV4) && !rspiocbq) {
3241 rc = -ENOMEM;
3242 goto err_loopback_test_exit;
3243 }
3244
3245 cmd = &cmdiocbq->iocb;
3246 if (phba->sli_rev < LPFC_SLI_REV4)
3247 rsp = &rspiocbq->iocb;
3248
3249 INIT_LIST_HEAD(&head);
3250 list_add_tail(&head, &txbuffer->dma.list);
3251 list_for_each_entry(curr, &head, list) {
3252 segment_len = ((struct lpfc_dmabufext *)curr)->size;
3253 if (current_offset == 0) {
3254 ctreq = curr->virt;
3255 memset(ctreq, 0, ELX_LOOPBACK_HEADER_SZ);
3256 ctreq->RevisionId.bits.Revision = SLI_CT_REVISION;
3257 ctreq->RevisionId.bits.InId = 0;
3258 ctreq->FsType = SLI_CT_ELX_LOOPBACK;
3259 ctreq->FsSubType = 0;
3260 ctreq->CommandResponse.bits.CmdRsp = ELX_LOOPBACK_DATA;
3261 ctreq->CommandResponse.bits.Size = size;
3262 segment_offset = ELX_LOOPBACK_HEADER_SZ;
3263 } else
3264 segment_offset = 0;
3265
3266 BUG_ON(segment_offset >= segment_len);
3267 memcpy(curr->virt + segment_offset,
3268 ptr + current_offset,
3269 segment_len - segment_offset);
3270
3271 current_offset += segment_len - segment_offset;
3272 BUG_ON(current_offset > size);
3273 }
3274 list_del(&head);
3275
3276 /* Build the XMIT_SEQUENCE iocb */
3277 num_bde = (uint32_t)txbuffer->flag;
3278
3279 cmd->un.xseq64.bdl.addrHigh = putPaddrHigh(txbmp->phys);
3280 cmd->un.xseq64.bdl.addrLow = putPaddrLow(txbmp->phys);
3281 cmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
3282 cmd->un.xseq64.bdl.bdeSize = (num_bde * sizeof(struct ulp_bde64));
3283
3284 cmd->un.xseq64.w5.hcsw.Fctl = (LS | LA);
3285 cmd->un.xseq64.w5.hcsw.Dfctl = 0;
3286 cmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL;
3287 cmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT;
3288
3289 cmd->ulpCommand = CMD_XMIT_SEQUENCE64_CX;
3290 cmd->ulpBdeCount = 1;
3291 cmd->ulpLe = 1;
3292 cmd->ulpClass = CLASS3;
3293
3294 if (phba->sli_rev < LPFC_SLI_REV4) {
3295 cmd->ulpContext = txxri;
3296 } else {
3297 cmd->un.xseq64.bdl.ulpIoTag32 = 0;
3298 cmd->un.ulpWord[3] = phba->sli4_hba.rpi_ids[rpi];
3299 cmdiocbq->context3 = txbmp;
3300 cmdiocbq->sli4_xritag = NO_XRI;
3301 cmd->unsli3.rcvsli3.ox_id = 0xffff;
3302 }
3303 cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
3304 cmdiocbq->iocb_flag |= LPFC_IO_LOOPBACK;
3305 cmdiocbq->vport = phba->pport;
3306 cmdiocbq->iocb_cmpl = NULL;
3307 iocb_stat = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq,
3308 rspiocbq, (phba->fc_ratov * 2) +
3309 LPFC_DRVR_TIMEOUT);
3310
3311 if ((iocb_stat != IOCB_SUCCESS) ||
3312 ((phba->sli_rev < LPFC_SLI_REV4) &&
3313 (rsp->ulpStatus != IOSTAT_SUCCESS))) {
3314 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3315 "3126 Failed loopback test issue iocb: "
3316 "iocb_stat:x%x\n", iocb_stat);
3317 rc = -EIO;
3318 goto err_loopback_test_exit;
3319 }
3320
3321 evt->waiting = 1;
3322 time_left = wait_event_interruptible_timeout(
3323 evt->wq, !list_empty(&evt->events_to_see),
3324 msecs_to_jiffies(1000 *
3325 ((phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT)));
3326 evt->waiting = 0;
3327 if (list_empty(&evt->events_to_see)) {
3328 rc = (time_left) ? -EINTR : -ETIMEDOUT;
3329 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3330 "3125 Not receiving unsolicited event, "
3331 "rc:x%x\n", rc);
3332 } else {
3333 spin_lock_irqsave(&phba->ct_ev_lock, flags);
3334 list_move(evt->events_to_see.prev, &evt->events_to_get);
3335 evdat = list_entry(evt->events_to_get.prev,
3336 typeof(*evdat), node);
3337 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3338 rx_databuf = evdat->data;
3339 if (evdat->len != full_size) {
3340 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3341 "1603 Loopback test did not receive expected "
3342 "data length. actual length 0x%x expected "
3343 "length 0x%x\n",
3344 evdat->len, full_size);
3345 rc = -EIO;
3346 } else if (rx_databuf == NULL)
3347 rc = -EIO;
3348 else {
3349 rc = IOCB_SUCCESS;
3350 /* skip over elx loopback header */
3351 rx_databuf += ELX_LOOPBACK_HEADER_SZ;
3352 bsg_reply->reply_payload_rcv_len =
3353 sg_copy_from_buffer(job->reply_payload.sg_list,
3354 job->reply_payload.sg_cnt,
3355 rx_databuf, size);
3356 bsg_reply->reply_payload_rcv_len = size;
3357 }
3358 }
3359
3360 err_loopback_test_exit:
3361 lpfcdiag_loop_self_unreg(phba, rpi);
3362
3363 spin_lock_irqsave(&phba->ct_ev_lock, flags);
3364 lpfc_bsg_event_unref(evt); /* release ref */
3365 lpfc_bsg_event_unref(evt); /* delete */
3366 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3367
3368 if ((cmdiocbq != NULL) && (iocb_stat != IOCB_TIMEDOUT))
3369 lpfc_sli_release_iocbq(phba, cmdiocbq);
3370
3371 if (rspiocbq != NULL)
3372 lpfc_sli_release_iocbq(phba, rspiocbq);
3373
3374 if (txbmp != NULL) {
3375 if (txbpl != NULL) {
3376 if (txbuffer != NULL)
3377 diag_cmd_data_free(phba, txbuffer);
3378 lpfc_mbuf_free(phba, txbmp->virt, txbmp->phys);
3379 }
3380 kfree(txbmp);
3381 }
3382
3383 loopback_test_exit:
3384 kfree(dataout);
3385 /* make error code available to userspace */
3386 bsg_reply->result = rc;
3387 job->dd_data = NULL;
3388 /* complete the job back to userspace if no error */
3389 if (rc == IOCB_SUCCESS)
3390 bsg_job_done(job, bsg_reply->result,
3391 bsg_reply->reply_payload_rcv_len);
3392 return rc;
3393 }
3394
3395 /**
3396 * lpfc_bsg_get_dfc_rev - process a GET_DFC_REV bsg vendor command
3397 * @job: GET_DFC_REV fc_bsg_job
3398 **/
3399 static int
lpfc_bsg_get_dfc_rev(struct bsg_job * job)3400 lpfc_bsg_get_dfc_rev(struct bsg_job *job)
3401 {
3402 struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
3403 struct fc_bsg_reply *bsg_reply = job->reply;
3404 struct lpfc_hba *phba = vport->phba;
3405 struct get_mgmt_rev_reply *event_reply;
3406 int rc = 0;
3407
3408 if (job->request_len <
3409 sizeof(struct fc_bsg_request) + sizeof(struct get_mgmt_rev)) {
3410 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3411 "2740 Received GET_DFC_REV request below "
3412 "minimum size\n");
3413 rc = -EINVAL;
3414 goto job_error;
3415 }
3416
3417 event_reply = (struct get_mgmt_rev_reply *)
3418 bsg_reply->reply_data.vendor_reply.vendor_rsp;
3419
3420 if (job->reply_len < sizeof(*bsg_reply) + sizeof(*event_reply)) {
3421 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3422 "2741 Received GET_DFC_REV reply below "
3423 "minimum size\n");
3424 rc = -EINVAL;
3425 goto job_error;
3426 }
3427
3428 event_reply->info.a_Major = MANAGEMENT_MAJOR_REV;
3429 event_reply->info.a_Minor = MANAGEMENT_MINOR_REV;
3430 job_error:
3431 bsg_reply->result = rc;
3432 if (rc == 0)
3433 bsg_job_done(job, bsg_reply->result,
3434 bsg_reply->reply_payload_rcv_len);
3435 return rc;
3436 }
3437
3438 /**
3439 * lpfc_bsg_issue_mbox_cmpl - lpfc_bsg_issue_mbox mbox completion handler
3440 * @phba: Pointer to HBA context object.
3441 * @pmboxq: Pointer to mailbox command.
3442 *
3443 * This is completion handler function for mailbox commands issued from
3444 * lpfc_bsg_issue_mbox function. This function is called by the
3445 * mailbox event handler function with no lock held. This function
3446 * will wake up thread waiting on the wait queue pointed by context1
3447 * of the mailbox.
3448 **/
3449 static void
lpfc_bsg_issue_mbox_cmpl(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmboxq)3450 lpfc_bsg_issue_mbox_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
3451 {
3452 struct bsg_job_data *dd_data;
3453 struct fc_bsg_reply *bsg_reply;
3454 struct bsg_job *job;
3455 uint32_t size;
3456 unsigned long flags;
3457 uint8_t *pmb, *pmb_buf;
3458
3459 dd_data = pmboxq->ctx_ndlp;
3460
3461 /*
3462 * The outgoing buffer is readily referred from the dma buffer,
3463 * just need to get header part from mailboxq structure.
3464 */
3465 pmb = (uint8_t *)&pmboxq->u.mb;
3466 pmb_buf = (uint8_t *)dd_data->context_un.mbox.mb;
3467 memcpy(pmb_buf, pmb, sizeof(MAILBOX_t));
3468
3469 /* Determine if job has been aborted */
3470
3471 spin_lock_irqsave(&phba->ct_ev_lock, flags);
3472 job = dd_data->set_job;
3473 if (job) {
3474 /* Prevent timeout handling from trying to abort job */
3475 job->dd_data = NULL;
3476 }
3477 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3478
3479 /* Copy the mailbox data to the job if it is still active */
3480
3481 if (job) {
3482 bsg_reply = job->reply;
3483 size = job->reply_payload.payload_len;
3484 bsg_reply->reply_payload_rcv_len =
3485 sg_copy_from_buffer(job->reply_payload.sg_list,
3486 job->reply_payload.sg_cnt,
3487 pmb_buf, size);
3488 }
3489
3490 dd_data->set_job = NULL;
3491 mempool_free(dd_data->context_un.mbox.pmboxq, phba->mbox_mem_pool);
3492 lpfc_bsg_dma_page_free(phba, dd_data->context_un.mbox.dmabuffers);
3493 kfree(dd_data);
3494
3495 /* Complete the job if the job is still active */
3496
3497 if (job) {
3498 bsg_reply->result = 0;
3499 bsg_job_done(job, bsg_reply->result,
3500 bsg_reply->reply_payload_rcv_len);
3501 }
3502 return;
3503 }
3504
3505 /**
3506 * lpfc_bsg_check_cmd_access - test for a supported mailbox command
3507 * @phba: Pointer to HBA context object.
3508 * @mb: Pointer to a mailbox object.
3509 * @vport: Pointer to a vport object.
3510 *
3511 * Some commands require the port to be offline, some may not be called from
3512 * the application.
3513 **/
lpfc_bsg_check_cmd_access(struct lpfc_hba * phba,MAILBOX_t * mb,struct lpfc_vport * vport)3514 static int lpfc_bsg_check_cmd_access(struct lpfc_hba *phba,
3515 MAILBOX_t *mb, struct lpfc_vport *vport)
3516 {
3517 /* return negative error values for bsg job */
3518 switch (mb->mbxCommand) {
3519 /* Offline only */
3520 case MBX_INIT_LINK:
3521 case MBX_DOWN_LINK:
3522 case MBX_CONFIG_LINK:
3523 case MBX_CONFIG_RING:
3524 case MBX_RESET_RING:
3525 case MBX_UNREG_LOGIN:
3526 case MBX_CLEAR_LA:
3527 case MBX_DUMP_CONTEXT:
3528 case MBX_RUN_DIAGS:
3529 case MBX_RESTART:
3530 case MBX_SET_MASK:
3531 if (!(vport->fc_flag & FC_OFFLINE_MODE)) {
3532 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3533 "2743 Command 0x%x is illegal in on-line "
3534 "state\n",
3535 mb->mbxCommand);
3536 return -EPERM;
3537 }
3538 case MBX_WRITE_NV:
3539 case MBX_WRITE_VPARMS:
3540 case MBX_LOAD_SM:
3541 case MBX_READ_NV:
3542 case MBX_READ_CONFIG:
3543 case MBX_READ_RCONFIG:
3544 case MBX_READ_STATUS:
3545 case MBX_READ_XRI:
3546 case MBX_READ_REV:
3547 case MBX_READ_LNK_STAT:
3548 case MBX_DUMP_MEMORY:
3549 case MBX_DOWN_LOAD:
3550 case MBX_UPDATE_CFG:
3551 case MBX_KILL_BOARD:
3552 case MBX_READ_TOPOLOGY:
3553 case MBX_LOAD_AREA:
3554 case MBX_LOAD_EXP_ROM:
3555 case MBX_BEACON:
3556 case MBX_DEL_LD_ENTRY:
3557 case MBX_SET_DEBUG:
3558 case MBX_WRITE_WWN:
3559 case MBX_SLI4_CONFIG:
3560 case MBX_READ_EVENT_LOG:
3561 case MBX_READ_EVENT_LOG_STATUS:
3562 case MBX_WRITE_EVENT_LOG:
3563 case MBX_PORT_CAPABILITIES:
3564 case MBX_PORT_IOV_CONTROL:
3565 case MBX_RUN_BIU_DIAG64:
3566 break;
3567 case MBX_SET_VARIABLE:
3568 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3569 "1226 mbox: set_variable 0x%x, 0x%x\n",
3570 mb->un.varWords[0],
3571 mb->un.varWords[1]);
3572 if ((mb->un.varWords[0] == SETVAR_MLOMNT)
3573 && (mb->un.varWords[1] == 1)) {
3574 phba->wait_4_mlo_maint_flg = 1;
3575 } else if (mb->un.varWords[0] == SETVAR_MLORST) {
3576 spin_lock_irq(&phba->hbalock);
3577 phba->link_flag &= ~LS_LOOPBACK_MODE;
3578 spin_unlock_irq(&phba->hbalock);
3579 phba->fc_topology = LPFC_TOPOLOGY_PT_PT;
3580 }
3581 break;
3582 case MBX_READ_SPARM64:
3583 case MBX_REG_LOGIN:
3584 case MBX_REG_LOGIN64:
3585 case MBX_CONFIG_PORT:
3586 case MBX_RUN_BIU_DIAG:
3587 default:
3588 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3589 "2742 Unknown Command 0x%x\n",
3590 mb->mbxCommand);
3591 return -EPERM;
3592 }
3593
3594 return 0; /* ok */
3595 }
3596
3597 /**
3598 * lpfc_bsg_mbox_ext_cleanup - clean up context of multi-buffer mbox session
3599 * @phba: Pointer to HBA context object.
3600 *
3601 * This is routine clean up and reset BSG handling of multi-buffer mbox
3602 * command session.
3603 **/
3604 static void
lpfc_bsg_mbox_ext_session_reset(struct lpfc_hba * phba)3605 lpfc_bsg_mbox_ext_session_reset(struct lpfc_hba *phba)
3606 {
3607 if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_IDLE)
3608 return;
3609
3610 /* free all memory, including dma buffers */
3611 lpfc_bsg_dma_page_list_free(phba,
3612 &phba->mbox_ext_buf_ctx.ext_dmabuf_list);
3613 lpfc_bsg_dma_page_free(phba, phba->mbox_ext_buf_ctx.mbx_dmabuf);
3614 /* multi-buffer write mailbox command pass-through complete */
3615 memset((char *)&phba->mbox_ext_buf_ctx, 0,
3616 sizeof(struct lpfc_mbox_ext_buf_ctx));
3617 INIT_LIST_HEAD(&phba->mbox_ext_buf_ctx.ext_dmabuf_list);
3618
3619 return;
3620 }
3621
3622 /**
3623 * lpfc_bsg_issue_mbox_ext_handle_job - job handler for multi-buffer mbox cmpl
3624 * @phba: Pointer to HBA context object.
3625 * @pmboxq: Pointer to mailbox command.
3626 *
3627 * This is routine handles BSG job for mailbox commands completions with
3628 * multiple external buffers.
3629 **/
3630 static struct bsg_job *
lpfc_bsg_issue_mbox_ext_handle_job(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmboxq)3631 lpfc_bsg_issue_mbox_ext_handle_job(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
3632 {
3633 struct bsg_job_data *dd_data;
3634 struct bsg_job *job;
3635 struct fc_bsg_reply *bsg_reply;
3636 uint8_t *pmb, *pmb_buf;
3637 unsigned long flags;
3638 uint32_t size;
3639 int rc = 0;
3640 struct lpfc_dmabuf *dmabuf;
3641 struct lpfc_sli_config_mbox *sli_cfg_mbx;
3642 uint8_t *pmbx;
3643
3644 dd_data = pmboxq->ctx_buf;
3645
3646 /* Determine if job has been aborted */
3647 spin_lock_irqsave(&phba->ct_ev_lock, flags);
3648 job = dd_data->set_job;
3649 if (job) {
3650 bsg_reply = job->reply;
3651 /* Prevent timeout handling from trying to abort job */
3652 job->dd_data = NULL;
3653 }
3654 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3655
3656 /*
3657 * The outgoing buffer is readily referred from the dma buffer,
3658 * just need to get header part from mailboxq structure.
3659 */
3660
3661 pmb = (uint8_t *)&pmboxq->u.mb;
3662 pmb_buf = (uint8_t *)dd_data->context_un.mbox.mb;
3663 /* Copy the byte swapped response mailbox back to the user */
3664 memcpy(pmb_buf, pmb, sizeof(MAILBOX_t));
3665 /* if there is any non-embedded extended data copy that too */
3666 dmabuf = phba->mbox_ext_buf_ctx.mbx_dmabuf;
3667 sli_cfg_mbx = (struct lpfc_sli_config_mbox *)dmabuf->virt;
3668 if (!bsg_bf_get(lpfc_mbox_hdr_emb,
3669 &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr)) {
3670 pmbx = (uint8_t *)dmabuf->virt;
3671 /* byte swap the extended data following the mailbox command */
3672 lpfc_sli_pcimem_bcopy(&pmbx[sizeof(MAILBOX_t)],
3673 &pmbx[sizeof(MAILBOX_t)],
3674 sli_cfg_mbx->un.sli_config_emb0_subsys.mse[0].buf_len);
3675 }
3676
3677 /* Complete the job if the job is still active */
3678
3679 if (job) {
3680 size = job->reply_payload.payload_len;
3681 bsg_reply->reply_payload_rcv_len =
3682 sg_copy_from_buffer(job->reply_payload.sg_list,
3683 job->reply_payload.sg_cnt,
3684 pmb_buf, size);
3685
3686 /* result for successful */
3687 bsg_reply->result = 0;
3688
3689 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3690 "2937 SLI_CONFIG ext-buffer mailbox command "
3691 "(x%x/x%x) complete bsg job done, bsize:%d\n",
3692 phba->mbox_ext_buf_ctx.nembType,
3693 phba->mbox_ext_buf_ctx.mboxType, size);
3694 lpfc_idiag_mbxacc_dump_bsg_mbox(phba,
3695 phba->mbox_ext_buf_ctx.nembType,
3696 phba->mbox_ext_buf_ctx.mboxType,
3697 dma_ebuf, sta_pos_addr,
3698 phba->mbox_ext_buf_ctx.mbx_dmabuf, 0);
3699 } else {
3700 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3701 "2938 SLI_CONFIG ext-buffer mailbox "
3702 "command (x%x/x%x) failure, rc:x%x\n",
3703 phba->mbox_ext_buf_ctx.nembType,
3704 phba->mbox_ext_buf_ctx.mboxType, rc);
3705 }
3706
3707
3708 /* state change */
3709 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_DONE;
3710 kfree(dd_data);
3711 return job;
3712 }
3713
3714 /**
3715 * lpfc_bsg_issue_read_mbox_ext_cmpl - compl handler for multi-buffer read mbox
3716 * @phba: Pointer to HBA context object.
3717 * @pmboxq: Pointer to mailbox command.
3718 *
3719 * This is completion handler function for mailbox read commands with multiple
3720 * external buffers.
3721 **/
3722 static void
lpfc_bsg_issue_read_mbox_ext_cmpl(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmboxq)3723 lpfc_bsg_issue_read_mbox_ext_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
3724 {
3725 struct bsg_job *job;
3726 struct fc_bsg_reply *bsg_reply;
3727
3728 job = lpfc_bsg_issue_mbox_ext_handle_job(phba, pmboxq);
3729
3730 /* handle the BSG job with mailbox command */
3731 if (!job)
3732 pmboxq->u.mb.mbxStatus = MBXERR_ERROR;
3733
3734 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3735 "2939 SLI_CONFIG ext-buffer rd mailbox command "
3736 "complete, ctxState:x%x, mbxStatus:x%x\n",
3737 phba->mbox_ext_buf_ctx.state, pmboxq->u.mb.mbxStatus);
3738
3739 if (pmboxq->u.mb.mbxStatus || phba->mbox_ext_buf_ctx.numBuf == 1)
3740 lpfc_bsg_mbox_ext_session_reset(phba);
3741
3742 /* free base driver mailbox structure memory */
3743 mempool_free(pmboxq, phba->mbox_mem_pool);
3744
3745 /* if the job is still active, call job done */
3746 if (job) {
3747 bsg_reply = job->reply;
3748 bsg_job_done(job, bsg_reply->result,
3749 bsg_reply->reply_payload_rcv_len);
3750 }
3751 return;
3752 }
3753
3754 /**
3755 * lpfc_bsg_issue_write_mbox_ext_cmpl - cmpl handler for multi-buffer write mbox
3756 * @phba: Pointer to HBA context object.
3757 * @pmboxq: Pointer to mailbox command.
3758 *
3759 * This is completion handler function for mailbox write commands with multiple
3760 * external buffers.
3761 **/
3762 static void
lpfc_bsg_issue_write_mbox_ext_cmpl(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmboxq)3763 lpfc_bsg_issue_write_mbox_ext_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
3764 {
3765 struct bsg_job *job;
3766 struct fc_bsg_reply *bsg_reply;
3767
3768 job = lpfc_bsg_issue_mbox_ext_handle_job(phba, pmboxq);
3769
3770 /* handle the BSG job with the mailbox command */
3771 if (!job)
3772 pmboxq->u.mb.mbxStatus = MBXERR_ERROR;
3773
3774 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3775 "2940 SLI_CONFIG ext-buffer wr mailbox command "
3776 "complete, ctxState:x%x, mbxStatus:x%x\n",
3777 phba->mbox_ext_buf_ctx.state, pmboxq->u.mb.mbxStatus);
3778
3779 /* free all memory, including dma buffers */
3780 mempool_free(pmboxq, phba->mbox_mem_pool);
3781 lpfc_bsg_mbox_ext_session_reset(phba);
3782
3783 /* if the job is still active, call job done */
3784 if (job) {
3785 bsg_reply = job->reply;
3786 bsg_job_done(job, bsg_reply->result,
3787 bsg_reply->reply_payload_rcv_len);
3788 }
3789
3790 return;
3791 }
3792
3793 static void
lpfc_bsg_sli_cfg_dma_desc_setup(struct lpfc_hba * phba,enum nemb_type nemb_tp,uint32_t index,struct lpfc_dmabuf * mbx_dmabuf,struct lpfc_dmabuf * ext_dmabuf)3794 lpfc_bsg_sli_cfg_dma_desc_setup(struct lpfc_hba *phba, enum nemb_type nemb_tp,
3795 uint32_t index, struct lpfc_dmabuf *mbx_dmabuf,
3796 struct lpfc_dmabuf *ext_dmabuf)
3797 {
3798 struct lpfc_sli_config_mbox *sli_cfg_mbx;
3799
3800 /* pointer to the start of mailbox command */
3801 sli_cfg_mbx = (struct lpfc_sli_config_mbox *)mbx_dmabuf->virt;
3802
3803 if (nemb_tp == nemb_mse) {
3804 if (index == 0) {
3805 sli_cfg_mbx->un.sli_config_emb0_subsys.
3806 mse[index].pa_hi =
3807 putPaddrHigh(mbx_dmabuf->phys +
3808 sizeof(MAILBOX_t));
3809 sli_cfg_mbx->un.sli_config_emb0_subsys.
3810 mse[index].pa_lo =
3811 putPaddrLow(mbx_dmabuf->phys +
3812 sizeof(MAILBOX_t));
3813 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3814 "2943 SLI_CONFIG(mse)[%d], "
3815 "bufLen:%d, addrHi:x%x, addrLo:x%x\n",
3816 index,
3817 sli_cfg_mbx->un.sli_config_emb0_subsys.
3818 mse[index].buf_len,
3819 sli_cfg_mbx->un.sli_config_emb0_subsys.
3820 mse[index].pa_hi,
3821 sli_cfg_mbx->un.sli_config_emb0_subsys.
3822 mse[index].pa_lo);
3823 } else {
3824 sli_cfg_mbx->un.sli_config_emb0_subsys.
3825 mse[index].pa_hi =
3826 putPaddrHigh(ext_dmabuf->phys);
3827 sli_cfg_mbx->un.sli_config_emb0_subsys.
3828 mse[index].pa_lo =
3829 putPaddrLow(ext_dmabuf->phys);
3830 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3831 "2944 SLI_CONFIG(mse)[%d], "
3832 "bufLen:%d, addrHi:x%x, addrLo:x%x\n",
3833 index,
3834 sli_cfg_mbx->un.sli_config_emb0_subsys.
3835 mse[index].buf_len,
3836 sli_cfg_mbx->un.sli_config_emb0_subsys.
3837 mse[index].pa_hi,
3838 sli_cfg_mbx->un.sli_config_emb0_subsys.
3839 mse[index].pa_lo);
3840 }
3841 } else {
3842 if (index == 0) {
3843 sli_cfg_mbx->un.sli_config_emb1_subsys.
3844 hbd[index].pa_hi =
3845 putPaddrHigh(mbx_dmabuf->phys +
3846 sizeof(MAILBOX_t));
3847 sli_cfg_mbx->un.sli_config_emb1_subsys.
3848 hbd[index].pa_lo =
3849 putPaddrLow(mbx_dmabuf->phys +
3850 sizeof(MAILBOX_t));
3851 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3852 "3007 SLI_CONFIG(hbd)[%d], "
3853 "bufLen:%d, addrHi:x%x, addrLo:x%x\n",
3854 index,
3855 bsg_bf_get(lpfc_mbox_sli_config_ecmn_hbd_len,
3856 &sli_cfg_mbx->un.
3857 sli_config_emb1_subsys.hbd[index]),
3858 sli_cfg_mbx->un.sli_config_emb1_subsys.
3859 hbd[index].pa_hi,
3860 sli_cfg_mbx->un.sli_config_emb1_subsys.
3861 hbd[index].pa_lo);
3862
3863 } else {
3864 sli_cfg_mbx->un.sli_config_emb1_subsys.
3865 hbd[index].pa_hi =
3866 putPaddrHigh(ext_dmabuf->phys);
3867 sli_cfg_mbx->un.sli_config_emb1_subsys.
3868 hbd[index].pa_lo =
3869 putPaddrLow(ext_dmabuf->phys);
3870 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3871 "3008 SLI_CONFIG(hbd)[%d], "
3872 "bufLen:%d, addrHi:x%x, addrLo:x%x\n",
3873 index,
3874 bsg_bf_get(lpfc_mbox_sli_config_ecmn_hbd_len,
3875 &sli_cfg_mbx->un.
3876 sli_config_emb1_subsys.hbd[index]),
3877 sli_cfg_mbx->un.sli_config_emb1_subsys.
3878 hbd[index].pa_hi,
3879 sli_cfg_mbx->un.sli_config_emb1_subsys.
3880 hbd[index].pa_lo);
3881 }
3882 }
3883 return;
3884 }
3885
3886 /**
3887 * lpfc_bsg_sli_cfg_mse_read_cmd_ext - sli_config non-embedded mailbox cmd read
3888 * @phba: Pointer to HBA context object.
3889 * @mb: Pointer to a BSG mailbox object.
3890 * @nemb_tp: Enumerate of non-embedded mailbox command type.
3891 * @dmabuff: Pointer to a DMA buffer descriptor.
3892 *
3893 * This routine performs SLI_CONFIG (0x9B) read mailbox command operation with
3894 * non-embedded external bufffers.
3895 **/
3896 static int
lpfc_bsg_sli_cfg_read_cmd_ext(struct lpfc_hba * phba,struct bsg_job * job,enum nemb_type nemb_tp,struct lpfc_dmabuf * dmabuf)3897 lpfc_bsg_sli_cfg_read_cmd_ext(struct lpfc_hba *phba, struct bsg_job *job,
3898 enum nemb_type nemb_tp,
3899 struct lpfc_dmabuf *dmabuf)
3900 {
3901 struct fc_bsg_request *bsg_request = job->request;
3902 struct lpfc_sli_config_mbox *sli_cfg_mbx;
3903 struct dfc_mbox_req *mbox_req;
3904 struct lpfc_dmabuf *curr_dmabuf, *next_dmabuf;
3905 uint32_t ext_buf_cnt, ext_buf_index;
3906 struct lpfc_dmabuf *ext_dmabuf = NULL;
3907 struct bsg_job_data *dd_data = NULL;
3908 LPFC_MBOXQ_t *pmboxq = NULL;
3909 MAILBOX_t *pmb;
3910 uint8_t *pmbx;
3911 int rc, i;
3912
3913 mbox_req =
3914 (struct dfc_mbox_req *)bsg_request->rqst_data.h_vendor.vendor_cmd;
3915
3916 /* pointer to the start of mailbox command */
3917 sli_cfg_mbx = (struct lpfc_sli_config_mbox *)dmabuf->virt;
3918
3919 if (nemb_tp == nemb_mse) {
3920 ext_buf_cnt = bsg_bf_get(lpfc_mbox_hdr_mse_cnt,
3921 &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr);
3922 if (ext_buf_cnt > LPFC_MBX_SLI_CONFIG_MAX_MSE) {
3923 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3924 "2945 Handled SLI_CONFIG(mse) rd, "
3925 "ext_buf_cnt(%d) out of range(%d)\n",
3926 ext_buf_cnt,
3927 LPFC_MBX_SLI_CONFIG_MAX_MSE);
3928 rc = -ERANGE;
3929 goto job_error;
3930 }
3931 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3932 "2941 Handled SLI_CONFIG(mse) rd, "
3933 "ext_buf_cnt:%d\n", ext_buf_cnt);
3934 } else {
3935 /* sanity check on interface type for support */
3936 if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
3937 LPFC_SLI_INTF_IF_TYPE_2) {
3938 rc = -ENODEV;
3939 goto job_error;
3940 }
3941 /* nemb_tp == nemb_hbd */
3942 ext_buf_cnt = sli_cfg_mbx->un.sli_config_emb1_subsys.hbd_count;
3943 if (ext_buf_cnt > LPFC_MBX_SLI_CONFIG_MAX_HBD) {
3944 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3945 "2946 Handled SLI_CONFIG(hbd) rd, "
3946 "ext_buf_cnt(%d) out of range(%d)\n",
3947 ext_buf_cnt,
3948 LPFC_MBX_SLI_CONFIG_MAX_HBD);
3949 rc = -ERANGE;
3950 goto job_error;
3951 }
3952 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3953 "2942 Handled SLI_CONFIG(hbd) rd, "
3954 "ext_buf_cnt:%d\n", ext_buf_cnt);
3955 }
3956
3957 /* before dma descriptor setup */
3958 lpfc_idiag_mbxacc_dump_bsg_mbox(phba, nemb_tp, mbox_rd, dma_mbox,
3959 sta_pre_addr, dmabuf, ext_buf_cnt);
3960
3961 /* reject non-embedded mailbox command with none external buffer */
3962 if (ext_buf_cnt == 0) {
3963 rc = -EPERM;
3964 goto job_error;
3965 } else if (ext_buf_cnt > 1) {
3966 /* additional external read buffers */
3967 for (i = 1; i < ext_buf_cnt; i++) {
3968 ext_dmabuf = lpfc_bsg_dma_page_alloc(phba);
3969 if (!ext_dmabuf) {
3970 rc = -ENOMEM;
3971 goto job_error;
3972 }
3973 list_add_tail(&ext_dmabuf->list,
3974 &phba->mbox_ext_buf_ctx.ext_dmabuf_list);
3975 }
3976 }
3977
3978 /* bsg tracking structure */
3979 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
3980 if (!dd_data) {
3981 rc = -ENOMEM;
3982 goto job_error;
3983 }
3984
3985 /* mailbox command structure for base driver */
3986 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3987 if (!pmboxq) {
3988 rc = -ENOMEM;
3989 goto job_error;
3990 }
3991 memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
3992
3993 /* for the first external buffer */
3994 lpfc_bsg_sli_cfg_dma_desc_setup(phba, nemb_tp, 0, dmabuf, dmabuf);
3995
3996 /* for the rest of external buffer descriptors if any */
3997 if (ext_buf_cnt > 1) {
3998 ext_buf_index = 1;
3999 list_for_each_entry_safe(curr_dmabuf, next_dmabuf,
4000 &phba->mbox_ext_buf_ctx.ext_dmabuf_list, list) {
4001 lpfc_bsg_sli_cfg_dma_desc_setup(phba, nemb_tp,
4002 ext_buf_index, dmabuf,
4003 curr_dmabuf);
4004 ext_buf_index++;
4005 }
4006 }
4007
4008 /* after dma descriptor setup */
4009 lpfc_idiag_mbxacc_dump_bsg_mbox(phba, nemb_tp, mbox_rd, dma_mbox,
4010 sta_pos_addr, dmabuf, ext_buf_cnt);
4011
4012 /* construct base driver mbox command */
4013 pmb = &pmboxq->u.mb;
4014 pmbx = (uint8_t *)dmabuf->virt;
4015 memcpy(pmb, pmbx, sizeof(*pmb));
4016 pmb->mbxOwner = OWN_HOST;
4017 pmboxq->vport = phba->pport;
4018
4019 /* multi-buffer handling context */
4020 phba->mbox_ext_buf_ctx.nembType = nemb_tp;
4021 phba->mbox_ext_buf_ctx.mboxType = mbox_rd;
4022 phba->mbox_ext_buf_ctx.numBuf = ext_buf_cnt;
4023 phba->mbox_ext_buf_ctx.mbxTag = mbox_req->extMboxTag;
4024 phba->mbox_ext_buf_ctx.seqNum = mbox_req->extSeqNum;
4025 phba->mbox_ext_buf_ctx.mbx_dmabuf = dmabuf;
4026
4027 /* callback for multi-buffer read mailbox command */
4028 pmboxq->mbox_cmpl = lpfc_bsg_issue_read_mbox_ext_cmpl;
4029
4030 /* context fields to callback function */
4031 pmboxq->ctx_buf = dd_data;
4032 dd_data->type = TYPE_MBOX;
4033 dd_data->set_job = job;
4034 dd_data->context_un.mbox.pmboxq = pmboxq;
4035 dd_data->context_un.mbox.mb = (MAILBOX_t *)pmbx;
4036 job->dd_data = dd_data;
4037
4038 /* state change */
4039 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_PORT;
4040
4041 /*
4042 * Non-embedded mailbox subcommand data gets byte swapped here because
4043 * the lower level driver code only does the first 64 mailbox words.
4044 */
4045 if ((!bsg_bf_get(lpfc_mbox_hdr_emb,
4046 &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr)) &&
4047 (nemb_tp == nemb_mse))
4048 lpfc_sli_pcimem_bcopy(&pmbx[sizeof(MAILBOX_t)],
4049 &pmbx[sizeof(MAILBOX_t)],
4050 sli_cfg_mbx->un.sli_config_emb0_subsys.
4051 mse[0].buf_len);
4052
4053 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
4054 if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY)) {
4055 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4056 "2947 Issued SLI_CONFIG ext-buffer "
4057 "mailbox command, rc:x%x\n", rc);
4058 return SLI_CONFIG_HANDLED;
4059 }
4060 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4061 "2948 Failed to issue SLI_CONFIG ext-buffer "
4062 "mailbox command, rc:x%x\n", rc);
4063 rc = -EPIPE;
4064
4065 job_error:
4066 if (pmboxq)
4067 mempool_free(pmboxq, phba->mbox_mem_pool);
4068 lpfc_bsg_dma_page_list_free(phba,
4069 &phba->mbox_ext_buf_ctx.ext_dmabuf_list);
4070 kfree(dd_data);
4071 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_IDLE;
4072 return rc;
4073 }
4074
4075 /**
4076 * lpfc_bsg_sli_cfg_write_cmd_ext - sli_config non-embedded mailbox cmd write
4077 * @phba: Pointer to HBA context object.
4078 * @mb: Pointer to a BSG mailbox object.
4079 * @dmabuff: Pointer to a DMA buffer descriptor.
4080 *
4081 * This routine performs SLI_CONFIG (0x9B) write mailbox command operation with
4082 * non-embedded external bufffers.
4083 **/
4084 static int
lpfc_bsg_sli_cfg_write_cmd_ext(struct lpfc_hba * phba,struct bsg_job * job,enum nemb_type nemb_tp,struct lpfc_dmabuf * dmabuf)4085 lpfc_bsg_sli_cfg_write_cmd_ext(struct lpfc_hba *phba, struct bsg_job *job,
4086 enum nemb_type nemb_tp,
4087 struct lpfc_dmabuf *dmabuf)
4088 {
4089 struct fc_bsg_request *bsg_request = job->request;
4090 struct fc_bsg_reply *bsg_reply = job->reply;
4091 struct dfc_mbox_req *mbox_req;
4092 struct lpfc_sli_config_mbox *sli_cfg_mbx;
4093 uint32_t ext_buf_cnt;
4094 struct bsg_job_data *dd_data = NULL;
4095 LPFC_MBOXQ_t *pmboxq = NULL;
4096 MAILBOX_t *pmb;
4097 uint8_t *mbx;
4098 int rc = SLI_CONFIG_NOT_HANDLED, i;
4099
4100 mbox_req =
4101 (struct dfc_mbox_req *)bsg_request->rqst_data.h_vendor.vendor_cmd;
4102
4103 /* pointer to the start of mailbox command */
4104 sli_cfg_mbx = (struct lpfc_sli_config_mbox *)dmabuf->virt;
4105
4106 if (nemb_tp == nemb_mse) {
4107 ext_buf_cnt = bsg_bf_get(lpfc_mbox_hdr_mse_cnt,
4108 &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr);
4109 if (ext_buf_cnt > LPFC_MBX_SLI_CONFIG_MAX_MSE) {
4110 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4111 "2953 Failed SLI_CONFIG(mse) wr, "
4112 "ext_buf_cnt(%d) out of range(%d)\n",
4113 ext_buf_cnt,
4114 LPFC_MBX_SLI_CONFIG_MAX_MSE);
4115 return -ERANGE;
4116 }
4117 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4118 "2949 Handled SLI_CONFIG(mse) wr, "
4119 "ext_buf_cnt:%d\n", ext_buf_cnt);
4120 } else {
4121 /* sanity check on interface type for support */
4122 if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
4123 LPFC_SLI_INTF_IF_TYPE_2)
4124 return -ENODEV;
4125 /* nemb_tp == nemb_hbd */
4126 ext_buf_cnt = sli_cfg_mbx->un.sli_config_emb1_subsys.hbd_count;
4127 if (ext_buf_cnt > LPFC_MBX_SLI_CONFIG_MAX_HBD) {
4128 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4129 "2954 Failed SLI_CONFIG(hbd) wr, "
4130 "ext_buf_cnt(%d) out of range(%d)\n",
4131 ext_buf_cnt,
4132 LPFC_MBX_SLI_CONFIG_MAX_HBD);
4133 return -ERANGE;
4134 }
4135 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4136 "2950 Handled SLI_CONFIG(hbd) wr, "
4137 "ext_buf_cnt:%d\n", ext_buf_cnt);
4138 }
4139
4140 /* before dma buffer descriptor setup */
4141 lpfc_idiag_mbxacc_dump_bsg_mbox(phba, nemb_tp, mbox_wr, dma_mbox,
4142 sta_pre_addr, dmabuf, ext_buf_cnt);
4143
4144 if (ext_buf_cnt == 0)
4145 return -EPERM;
4146
4147 /* for the first external buffer */
4148 lpfc_bsg_sli_cfg_dma_desc_setup(phba, nemb_tp, 0, dmabuf, dmabuf);
4149
4150 /* after dma descriptor setup */
4151 lpfc_idiag_mbxacc_dump_bsg_mbox(phba, nemb_tp, mbox_wr, dma_mbox,
4152 sta_pos_addr, dmabuf, ext_buf_cnt);
4153
4154 /* log for looking forward */
4155 for (i = 1; i < ext_buf_cnt; i++) {
4156 if (nemb_tp == nemb_mse)
4157 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4158 "2951 SLI_CONFIG(mse), buf[%d]-length:%d\n",
4159 i, sli_cfg_mbx->un.sli_config_emb0_subsys.
4160 mse[i].buf_len);
4161 else
4162 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4163 "2952 SLI_CONFIG(hbd), buf[%d]-length:%d\n",
4164 i, bsg_bf_get(lpfc_mbox_sli_config_ecmn_hbd_len,
4165 &sli_cfg_mbx->un.sli_config_emb1_subsys.
4166 hbd[i]));
4167 }
4168
4169 /* multi-buffer handling context */
4170 phba->mbox_ext_buf_ctx.nembType = nemb_tp;
4171 phba->mbox_ext_buf_ctx.mboxType = mbox_wr;
4172 phba->mbox_ext_buf_ctx.numBuf = ext_buf_cnt;
4173 phba->mbox_ext_buf_ctx.mbxTag = mbox_req->extMboxTag;
4174 phba->mbox_ext_buf_ctx.seqNum = mbox_req->extSeqNum;
4175 phba->mbox_ext_buf_ctx.mbx_dmabuf = dmabuf;
4176
4177 if (ext_buf_cnt == 1) {
4178 /* bsg tracking structure */
4179 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
4180 if (!dd_data) {
4181 rc = -ENOMEM;
4182 goto job_error;
4183 }
4184
4185 /* mailbox command structure for base driver */
4186 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4187 if (!pmboxq) {
4188 rc = -ENOMEM;
4189 goto job_error;
4190 }
4191 memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
4192 pmb = &pmboxq->u.mb;
4193 mbx = (uint8_t *)dmabuf->virt;
4194 memcpy(pmb, mbx, sizeof(*pmb));
4195 pmb->mbxOwner = OWN_HOST;
4196 pmboxq->vport = phba->pport;
4197
4198 /* callback for multi-buffer read mailbox command */
4199 pmboxq->mbox_cmpl = lpfc_bsg_issue_write_mbox_ext_cmpl;
4200
4201 /* context fields to callback function */
4202 pmboxq->ctx_buf = dd_data;
4203 dd_data->type = TYPE_MBOX;
4204 dd_data->set_job = job;
4205 dd_data->context_un.mbox.pmboxq = pmboxq;
4206 dd_data->context_un.mbox.mb = (MAILBOX_t *)mbx;
4207 job->dd_data = dd_data;
4208
4209 /* state change */
4210
4211 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_PORT;
4212 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
4213 if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY)) {
4214 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4215 "2955 Issued SLI_CONFIG ext-buffer "
4216 "mailbox command, rc:x%x\n", rc);
4217 return SLI_CONFIG_HANDLED;
4218 }
4219 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4220 "2956 Failed to issue SLI_CONFIG ext-buffer "
4221 "mailbox command, rc:x%x\n", rc);
4222 rc = -EPIPE;
4223 goto job_error;
4224 }
4225
4226 /* wait for additoinal external buffers */
4227
4228 bsg_reply->result = 0;
4229 bsg_job_done(job, bsg_reply->result,
4230 bsg_reply->reply_payload_rcv_len);
4231 return SLI_CONFIG_HANDLED;
4232
4233 job_error:
4234 if (pmboxq)
4235 mempool_free(pmboxq, phba->mbox_mem_pool);
4236 kfree(dd_data);
4237
4238 return rc;
4239 }
4240
4241 /**
4242 * lpfc_bsg_handle_sli_cfg_mbox - handle sli-cfg mailbox cmd with ext buffer
4243 * @phba: Pointer to HBA context object.
4244 * @mb: Pointer to a BSG mailbox object.
4245 * @dmabuff: Pointer to a DMA buffer descriptor.
4246 *
4247 * This routine handles SLI_CONFIG (0x9B) mailbox command with non-embedded
4248 * external bufffers, including both 0x9B with non-embedded MSEs and 0x9B
4249 * with embedded sussystem 0x1 and opcodes with external HBDs.
4250 **/
4251 static int
lpfc_bsg_handle_sli_cfg_mbox(struct lpfc_hba * phba,struct bsg_job * job,struct lpfc_dmabuf * dmabuf)4252 lpfc_bsg_handle_sli_cfg_mbox(struct lpfc_hba *phba, struct bsg_job *job,
4253 struct lpfc_dmabuf *dmabuf)
4254 {
4255 struct lpfc_sli_config_mbox *sli_cfg_mbx;
4256 uint32_t subsys;
4257 uint32_t opcode;
4258 int rc = SLI_CONFIG_NOT_HANDLED;
4259
4260 /* state change on new multi-buffer pass-through mailbox command */
4261 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_HOST;
4262
4263 sli_cfg_mbx = (struct lpfc_sli_config_mbox *)dmabuf->virt;
4264
4265 if (!bsg_bf_get(lpfc_mbox_hdr_emb,
4266 &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr)) {
4267 subsys = bsg_bf_get(lpfc_emb0_subcmnd_subsys,
4268 &sli_cfg_mbx->un.sli_config_emb0_subsys);
4269 opcode = bsg_bf_get(lpfc_emb0_subcmnd_opcode,
4270 &sli_cfg_mbx->un.sli_config_emb0_subsys);
4271 if (subsys == SLI_CONFIG_SUBSYS_FCOE) {
4272 switch (opcode) {
4273 case FCOE_OPCODE_READ_FCF:
4274 case FCOE_OPCODE_GET_DPORT_RESULTS:
4275 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4276 "2957 Handled SLI_CONFIG "
4277 "subsys_fcoe, opcode:x%x\n",
4278 opcode);
4279 rc = lpfc_bsg_sli_cfg_read_cmd_ext(phba, job,
4280 nemb_mse, dmabuf);
4281 break;
4282 case FCOE_OPCODE_ADD_FCF:
4283 case FCOE_OPCODE_SET_DPORT_MODE:
4284 case LPFC_MBOX_OPCODE_FCOE_LINK_DIAG_STATE:
4285 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4286 "2958 Handled SLI_CONFIG "
4287 "subsys_fcoe, opcode:x%x\n",
4288 opcode);
4289 rc = lpfc_bsg_sli_cfg_write_cmd_ext(phba, job,
4290 nemb_mse, dmabuf);
4291 break;
4292 default:
4293 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4294 "2959 Reject SLI_CONFIG "
4295 "subsys_fcoe, opcode:x%x\n",
4296 opcode);
4297 rc = -EPERM;
4298 break;
4299 }
4300 } else if (subsys == SLI_CONFIG_SUBSYS_COMN) {
4301 switch (opcode) {
4302 case COMN_OPCODE_GET_CNTL_ADDL_ATTRIBUTES:
4303 case COMN_OPCODE_GET_CNTL_ATTRIBUTES:
4304 case COMN_OPCODE_GET_PROFILE_CONFIG:
4305 case COMN_OPCODE_SET_FEATURES:
4306 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4307 "3106 Handled SLI_CONFIG "
4308 "subsys_comn, opcode:x%x\n",
4309 opcode);
4310 rc = lpfc_bsg_sli_cfg_read_cmd_ext(phba, job,
4311 nemb_mse, dmabuf);
4312 break;
4313 default:
4314 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4315 "3107 Reject SLI_CONFIG "
4316 "subsys_comn, opcode:x%x\n",
4317 opcode);
4318 rc = -EPERM;
4319 break;
4320 }
4321 } else {
4322 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4323 "2977 Reject SLI_CONFIG "
4324 "subsys:x%d, opcode:x%x\n",
4325 subsys, opcode);
4326 rc = -EPERM;
4327 }
4328 } else {
4329 subsys = bsg_bf_get(lpfc_emb1_subcmnd_subsys,
4330 &sli_cfg_mbx->un.sli_config_emb1_subsys);
4331 opcode = bsg_bf_get(lpfc_emb1_subcmnd_opcode,
4332 &sli_cfg_mbx->un.sli_config_emb1_subsys);
4333 if (subsys == SLI_CONFIG_SUBSYS_COMN) {
4334 switch (opcode) {
4335 case COMN_OPCODE_READ_OBJECT:
4336 case COMN_OPCODE_READ_OBJECT_LIST:
4337 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4338 "2960 Handled SLI_CONFIG "
4339 "subsys_comn, opcode:x%x\n",
4340 opcode);
4341 rc = lpfc_bsg_sli_cfg_read_cmd_ext(phba, job,
4342 nemb_hbd, dmabuf);
4343 break;
4344 case COMN_OPCODE_WRITE_OBJECT:
4345 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4346 "2961 Handled SLI_CONFIG "
4347 "subsys_comn, opcode:x%x\n",
4348 opcode);
4349 rc = lpfc_bsg_sli_cfg_write_cmd_ext(phba, job,
4350 nemb_hbd, dmabuf);
4351 break;
4352 default:
4353 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4354 "2962 Not handled SLI_CONFIG "
4355 "subsys_comn, opcode:x%x\n",
4356 opcode);
4357 rc = SLI_CONFIG_NOT_HANDLED;
4358 break;
4359 }
4360 } else {
4361 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4362 "2978 Not handled SLI_CONFIG "
4363 "subsys:x%d, opcode:x%x\n",
4364 subsys, opcode);
4365 rc = SLI_CONFIG_NOT_HANDLED;
4366 }
4367 }
4368
4369 /* state reset on not handled new multi-buffer mailbox command */
4370 if (rc != SLI_CONFIG_HANDLED)
4371 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_IDLE;
4372
4373 return rc;
4374 }
4375
4376 /**
4377 * lpfc_bsg_mbox_ext_abort_req - request to abort mbox command with ext buffers
4378 * @phba: Pointer to HBA context object.
4379 *
4380 * This routine is for requesting to abort a pass-through mailbox command with
4381 * multiple external buffers due to error condition.
4382 **/
4383 static void
lpfc_bsg_mbox_ext_abort(struct lpfc_hba * phba)4384 lpfc_bsg_mbox_ext_abort(struct lpfc_hba *phba)
4385 {
4386 if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_PORT)
4387 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_ABTS;
4388 else
4389 lpfc_bsg_mbox_ext_session_reset(phba);
4390 return;
4391 }
4392
4393 /**
4394 * lpfc_bsg_read_ebuf_get - get the next mailbox read external buffer
4395 * @phba: Pointer to HBA context object.
4396 * @dmabuf: Pointer to a DMA buffer descriptor.
4397 *
4398 * This routine extracts the next mailbox read external buffer back to
4399 * user space through BSG.
4400 **/
4401 static int
lpfc_bsg_read_ebuf_get(struct lpfc_hba * phba,struct bsg_job * job)4402 lpfc_bsg_read_ebuf_get(struct lpfc_hba *phba, struct bsg_job *job)
4403 {
4404 struct fc_bsg_reply *bsg_reply = job->reply;
4405 struct lpfc_sli_config_mbox *sli_cfg_mbx;
4406 struct lpfc_dmabuf *dmabuf;
4407 uint8_t *pbuf;
4408 uint32_t size;
4409 uint32_t index;
4410
4411 index = phba->mbox_ext_buf_ctx.seqNum;
4412 phba->mbox_ext_buf_ctx.seqNum++;
4413
4414 sli_cfg_mbx = (struct lpfc_sli_config_mbox *)
4415 phba->mbox_ext_buf_ctx.mbx_dmabuf->virt;
4416
4417 if (phba->mbox_ext_buf_ctx.nembType == nemb_mse) {
4418 size = bsg_bf_get(lpfc_mbox_sli_config_mse_len,
4419 &sli_cfg_mbx->un.sli_config_emb0_subsys.mse[index]);
4420 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4421 "2963 SLI_CONFIG (mse) ext-buffer rd get "
4422 "buffer[%d], size:%d\n", index, size);
4423 } else {
4424 size = bsg_bf_get(lpfc_mbox_sli_config_ecmn_hbd_len,
4425 &sli_cfg_mbx->un.sli_config_emb1_subsys.hbd[index]);
4426 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4427 "2964 SLI_CONFIG (hbd) ext-buffer rd get "
4428 "buffer[%d], size:%d\n", index, size);
4429 }
4430 if (list_empty(&phba->mbox_ext_buf_ctx.ext_dmabuf_list))
4431 return -EPIPE;
4432 dmabuf = list_first_entry(&phba->mbox_ext_buf_ctx.ext_dmabuf_list,
4433 struct lpfc_dmabuf, list);
4434 list_del_init(&dmabuf->list);
4435
4436 /* after dma buffer descriptor setup */
4437 lpfc_idiag_mbxacc_dump_bsg_mbox(phba, phba->mbox_ext_buf_ctx.nembType,
4438 mbox_rd, dma_ebuf, sta_pos_addr,
4439 dmabuf, index);
4440
4441 pbuf = (uint8_t *)dmabuf->virt;
4442 bsg_reply->reply_payload_rcv_len =
4443 sg_copy_from_buffer(job->reply_payload.sg_list,
4444 job->reply_payload.sg_cnt,
4445 pbuf, size);
4446
4447 lpfc_bsg_dma_page_free(phba, dmabuf);
4448
4449 if (phba->mbox_ext_buf_ctx.seqNum == phba->mbox_ext_buf_ctx.numBuf) {
4450 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4451 "2965 SLI_CONFIG (hbd) ext-buffer rd mbox "
4452 "command session done\n");
4453 lpfc_bsg_mbox_ext_session_reset(phba);
4454 }
4455
4456 bsg_reply->result = 0;
4457 bsg_job_done(job, bsg_reply->result,
4458 bsg_reply->reply_payload_rcv_len);
4459
4460 return SLI_CONFIG_HANDLED;
4461 }
4462
4463 /**
4464 * lpfc_bsg_write_ebuf_set - set the next mailbox write external buffer
4465 * @phba: Pointer to HBA context object.
4466 * @dmabuf: Pointer to a DMA buffer descriptor.
4467 *
4468 * This routine sets up the next mailbox read external buffer obtained
4469 * from user space through BSG.
4470 **/
4471 static int
lpfc_bsg_write_ebuf_set(struct lpfc_hba * phba,struct bsg_job * job,struct lpfc_dmabuf * dmabuf)4472 lpfc_bsg_write_ebuf_set(struct lpfc_hba *phba, struct bsg_job *job,
4473 struct lpfc_dmabuf *dmabuf)
4474 {
4475 struct fc_bsg_reply *bsg_reply = job->reply;
4476 struct bsg_job_data *dd_data = NULL;
4477 LPFC_MBOXQ_t *pmboxq = NULL;
4478 MAILBOX_t *pmb;
4479 enum nemb_type nemb_tp;
4480 uint8_t *pbuf;
4481 uint32_t size;
4482 uint32_t index;
4483 int rc;
4484
4485 index = phba->mbox_ext_buf_ctx.seqNum;
4486 phba->mbox_ext_buf_ctx.seqNum++;
4487 nemb_tp = phba->mbox_ext_buf_ctx.nembType;
4488
4489 pbuf = (uint8_t *)dmabuf->virt;
4490 size = job->request_payload.payload_len;
4491 sg_copy_to_buffer(job->request_payload.sg_list,
4492 job->request_payload.sg_cnt,
4493 pbuf, size);
4494
4495 if (phba->mbox_ext_buf_ctx.nembType == nemb_mse) {
4496 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4497 "2966 SLI_CONFIG (mse) ext-buffer wr set "
4498 "buffer[%d], size:%d\n",
4499 phba->mbox_ext_buf_ctx.seqNum, size);
4500
4501 } else {
4502 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4503 "2967 SLI_CONFIG (hbd) ext-buffer wr set "
4504 "buffer[%d], size:%d\n",
4505 phba->mbox_ext_buf_ctx.seqNum, size);
4506
4507 }
4508
4509 /* set up external buffer descriptor and add to external buffer list */
4510 lpfc_bsg_sli_cfg_dma_desc_setup(phba, nemb_tp, index,
4511 phba->mbox_ext_buf_ctx.mbx_dmabuf,
4512 dmabuf);
4513 list_add_tail(&dmabuf->list, &phba->mbox_ext_buf_ctx.ext_dmabuf_list);
4514
4515 /* after write dma buffer */
4516 lpfc_idiag_mbxacc_dump_bsg_mbox(phba, phba->mbox_ext_buf_ctx.nembType,
4517 mbox_wr, dma_ebuf, sta_pos_addr,
4518 dmabuf, index);
4519
4520 if (phba->mbox_ext_buf_ctx.seqNum == phba->mbox_ext_buf_ctx.numBuf) {
4521 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4522 "2968 SLI_CONFIG ext-buffer wr all %d "
4523 "ebuffers received\n",
4524 phba->mbox_ext_buf_ctx.numBuf);
4525
4526 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
4527 if (!dd_data) {
4528 rc = -ENOMEM;
4529 goto job_error;
4530 }
4531
4532 /* mailbox command structure for base driver */
4533 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4534 if (!pmboxq) {
4535 rc = -ENOMEM;
4536 goto job_error;
4537 }
4538 memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
4539 pbuf = (uint8_t *)phba->mbox_ext_buf_ctx.mbx_dmabuf->virt;
4540 pmb = &pmboxq->u.mb;
4541 memcpy(pmb, pbuf, sizeof(*pmb));
4542 pmb->mbxOwner = OWN_HOST;
4543 pmboxq->vport = phba->pport;
4544
4545 /* callback for multi-buffer write mailbox command */
4546 pmboxq->mbox_cmpl = lpfc_bsg_issue_write_mbox_ext_cmpl;
4547
4548 /* context fields to callback function */
4549 pmboxq->ctx_buf = dd_data;
4550 dd_data->type = TYPE_MBOX;
4551 dd_data->set_job = job;
4552 dd_data->context_un.mbox.pmboxq = pmboxq;
4553 dd_data->context_un.mbox.mb = (MAILBOX_t *)pbuf;
4554 job->dd_data = dd_data;
4555
4556 /* state change */
4557 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_PORT;
4558
4559 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
4560 if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY)) {
4561 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4562 "2969 Issued SLI_CONFIG ext-buffer "
4563 "mailbox command, rc:x%x\n", rc);
4564 return SLI_CONFIG_HANDLED;
4565 }
4566 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4567 "2970 Failed to issue SLI_CONFIG ext-buffer "
4568 "mailbox command, rc:x%x\n", rc);
4569 rc = -EPIPE;
4570 goto job_error;
4571 }
4572
4573 /* wait for additoinal external buffers */
4574 bsg_reply->result = 0;
4575 bsg_job_done(job, bsg_reply->result,
4576 bsg_reply->reply_payload_rcv_len);
4577 return SLI_CONFIG_HANDLED;
4578
4579 job_error:
4580 if (pmboxq)
4581 mempool_free(pmboxq, phba->mbox_mem_pool);
4582 lpfc_bsg_dma_page_free(phba, dmabuf);
4583 kfree(dd_data);
4584
4585 return rc;
4586 }
4587
4588 /**
4589 * lpfc_bsg_handle_sli_cfg_ebuf - handle ext buffer with sli-cfg mailbox cmd
4590 * @phba: Pointer to HBA context object.
4591 * @mb: Pointer to a BSG mailbox object.
4592 * @dmabuff: Pointer to a DMA buffer descriptor.
4593 *
4594 * This routine handles the external buffer with SLI_CONFIG (0x9B) mailbox
4595 * command with multiple non-embedded external buffers.
4596 **/
4597 static int
lpfc_bsg_handle_sli_cfg_ebuf(struct lpfc_hba * phba,struct bsg_job * job,struct lpfc_dmabuf * dmabuf)4598 lpfc_bsg_handle_sli_cfg_ebuf(struct lpfc_hba *phba, struct bsg_job *job,
4599 struct lpfc_dmabuf *dmabuf)
4600 {
4601 int rc;
4602
4603 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4604 "2971 SLI_CONFIG buffer (type:x%x)\n",
4605 phba->mbox_ext_buf_ctx.mboxType);
4606
4607 if (phba->mbox_ext_buf_ctx.mboxType == mbox_rd) {
4608 if (phba->mbox_ext_buf_ctx.state != LPFC_BSG_MBOX_DONE) {
4609 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4610 "2972 SLI_CONFIG rd buffer state "
4611 "mismatch:x%x\n",
4612 phba->mbox_ext_buf_ctx.state);
4613 lpfc_bsg_mbox_ext_abort(phba);
4614 return -EPIPE;
4615 }
4616 rc = lpfc_bsg_read_ebuf_get(phba, job);
4617 if (rc == SLI_CONFIG_HANDLED)
4618 lpfc_bsg_dma_page_free(phba, dmabuf);
4619 } else { /* phba->mbox_ext_buf_ctx.mboxType == mbox_wr */
4620 if (phba->mbox_ext_buf_ctx.state != LPFC_BSG_MBOX_HOST) {
4621 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4622 "2973 SLI_CONFIG wr buffer state "
4623 "mismatch:x%x\n",
4624 phba->mbox_ext_buf_ctx.state);
4625 lpfc_bsg_mbox_ext_abort(phba);
4626 return -EPIPE;
4627 }
4628 rc = lpfc_bsg_write_ebuf_set(phba, job, dmabuf);
4629 }
4630 return rc;
4631 }
4632
4633 /**
4634 * lpfc_bsg_handle_sli_cfg_ext - handle sli-cfg mailbox with external buffer
4635 * @phba: Pointer to HBA context object.
4636 * @mb: Pointer to a BSG mailbox object.
4637 * @dmabuff: Pointer to a DMA buffer descriptor.
4638 *
4639 * This routine checkes and handles non-embedded multi-buffer SLI_CONFIG
4640 * (0x9B) mailbox commands and external buffers.
4641 **/
4642 static int
lpfc_bsg_handle_sli_cfg_ext(struct lpfc_hba * phba,struct bsg_job * job,struct lpfc_dmabuf * dmabuf)4643 lpfc_bsg_handle_sli_cfg_ext(struct lpfc_hba *phba, struct bsg_job *job,
4644 struct lpfc_dmabuf *dmabuf)
4645 {
4646 struct fc_bsg_request *bsg_request = job->request;
4647 struct dfc_mbox_req *mbox_req;
4648 int rc = SLI_CONFIG_NOT_HANDLED;
4649
4650 mbox_req =
4651 (struct dfc_mbox_req *)bsg_request->rqst_data.h_vendor.vendor_cmd;
4652
4653 /* mbox command with/without single external buffer */
4654 if (mbox_req->extMboxTag == 0 && mbox_req->extSeqNum == 0)
4655 return rc;
4656
4657 /* mbox command and first external buffer */
4658 if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_IDLE) {
4659 if (mbox_req->extSeqNum == 1) {
4660 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4661 "2974 SLI_CONFIG mailbox: tag:%d, "
4662 "seq:%d\n", mbox_req->extMboxTag,
4663 mbox_req->extSeqNum);
4664 rc = lpfc_bsg_handle_sli_cfg_mbox(phba, job, dmabuf);
4665 return rc;
4666 } else
4667 goto sli_cfg_ext_error;
4668 }
4669
4670 /*
4671 * handle additional external buffers
4672 */
4673
4674 /* check broken pipe conditions */
4675 if (mbox_req->extMboxTag != phba->mbox_ext_buf_ctx.mbxTag)
4676 goto sli_cfg_ext_error;
4677 if (mbox_req->extSeqNum > phba->mbox_ext_buf_ctx.numBuf)
4678 goto sli_cfg_ext_error;
4679 if (mbox_req->extSeqNum != phba->mbox_ext_buf_ctx.seqNum + 1)
4680 goto sli_cfg_ext_error;
4681
4682 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4683 "2975 SLI_CONFIG mailbox external buffer: "
4684 "extSta:x%x, tag:%d, seq:%d\n",
4685 phba->mbox_ext_buf_ctx.state, mbox_req->extMboxTag,
4686 mbox_req->extSeqNum);
4687 rc = lpfc_bsg_handle_sli_cfg_ebuf(phba, job, dmabuf);
4688 return rc;
4689
4690 sli_cfg_ext_error:
4691 /* all other cases, broken pipe */
4692 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4693 "2976 SLI_CONFIG mailbox broken pipe: "
4694 "ctxSta:x%x, ctxNumBuf:%d "
4695 "ctxTag:%d, ctxSeq:%d, tag:%d, seq:%d\n",
4696 phba->mbox_ext_buf_ctx.state,
4697 phba->mbox_ext_buf_ctx.numBuf,
4698 phba->mbox_ext_buf_ctx.mbxTag,
4699 phba->mbox_ext_buf_ctx.seqNum,
4700 mbox_req->extMboxTag, mbox_req->extSeqNum);
4701
4702 lpfc_bsg_mbox_ext_session_reset(phba);
4703
4704 return -EPIPE;
4705 }
4706
4707 /**
4708 * lpfc_bsg_issue_mbox - issues a mailbox command on behalf of an app
4709 * @phba: Pointer to HBA context object.
4710 * @mb: Pointer to a mailbox object.
4711 * @vport: Pointer to a vport object.
4712 *
4713 * Allocate a tracking object, mailbox command memory, get a mailbox
4714 * from the mailbox pool, copy the caller mailbox command.
4715 *
4716 * If offline and the sli is active we need to poll for the command (port is
4717 * being reset) and com-plete the job, otherwise issue the mailbox command and
4718 * let our completion handler finish the command.
4719 **/
4720 static int
lpfc_bsg_issue_mbox(struct lpfc_hba * phba,struct bsg_job * job,struct lpfc_vport * vport)4721 lpfc_bsg_issue_mbox(struct lpfc_hba *phba, struct bsg_job *job,
4722 struct lpfc_vport *vport)
4723 {
4724 struct fc_bsg_request *bsg_request = job->request;
4725 struct fc_bsg_reply *bsg_reply = job->reply;
4726 LPFC_MBOXQ_t *pmboxq = NULL; /* internal mailbox queue */
4727 MAILBOX_t *pmb; /* shortcut to the pmboxq mailbox */
4728 /* a 4k buffer to hold the mb and extended data from/to the bsg */
4729 uint8_t *pmbx = NULL;
4730 struct bsg_job_data *dd_data = NULL; /* bsg data tracking structure */
4731 struct lpfc_dmabuf *dmabuf = NULL;
4732 struct dfc_mbox_req *mbox_req;
4733 struct READ_EVENT_LOG_VAR *rdEventLog;
4734 uint32_t transmit_length, receive_length, mode;
4735 struct lpfc_mbx_sli4_config *sli4_config;
4736 struct lpfc_mbx_nembed_cmd *nembed_sge;
4737 struct ulp_bde64 *bde;
4738 uint8_t *ext = NULL;
4739 int rc = 0;
4740 uint8_t *from;
4741 uint32_t size;
4742
4743 /* in case no data is transferred */
4744 bsg_reply->reply_payload_rcv_len = 0;
4745
4746 /* sanity check to protect driver */
4747 if (job->reply_payload.payload_len > BSG_MBOX_SIZE ||
4748 job->request_payload.payload_len > BSG_MBOX_SIZE) {
4749 rc = -ERANGE;
4750 goto job_done;
4751 }
4752
4753 /*
4754 * Don't allow mailbox commands to be sent when blocked or when in
4755 * the middle of discovery
4756 */
4757 if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) {
4758 rc = -EAGAIN;
4759 goto job_done;
4760 }
4761
4762 mbox_req =
4763 (struct dfc_mbox_req *)bsg_request->rqst_data.h_vendor.vendor_cmd;
4764
4765 /* check if requested extended data lengths are valid */
4766 if ((mbox_req->inExtWLen > BSG_MBOX_SIZE/sizeof(uint32_t)) ||
4767 (mbox_req->outExtWLen > BSG_MBOX_SIZE/sizeof(uint32_t))) {
4768 rc = -ERANGE;
4769 goto job_done;
4770 }
4771
4772 dmabuf = lpfc_bsg_dma_page_alloc(phba);
4773 if (!dmabuf || !dmabuf->virt) {
4774 rc = -ENOMEM;
4775 goto job_done;
4776 }
4777
4778 /* Get the mailbox command or external buffer from BSG */
4779 pmbx = (uint8_t *)dmabuf->virt;
4780 size = job->request_payload.payload_len;
4781 sg_copy_to_buffer(job->request_payload.sg_list,
4782 job->request_payload.sg_cnt, pmbx, size);
4783
4784 /* Handle possible SLI_CONFIG with non-embedded payloads */
4785 if (phba->sli_rev == LPFC_SLI_REV4) {
4786 rc = lpfc_bsg_handle_sli_cfg_ext(phba, job, dmabuf);
4787 if (rc == SLI_CONFIG_HANDLED)
4788 goto job_cont;
4789 if (rc)
4790 goto job_done;
4791 /* SLI_CONFIG_NOT_HANDLED for other mailbox commands */
4792 }
4793
4794 rc = lpfc_bsg_check_cmd_access(phba, (MAILBOX_t *)pmbx, vport);
4795 if (rc != 0)
4796 goto job_done; /* must be negative */
4797
4798 /* allocate our bsg tracking structure */
4799 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
4800 if (!dd_data) {
4801 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
4802 "2727 Failed allocation of dd_data\n");
4803 rc = -ENOMEM;
4804 goto job_done;
4805 }
4806
4807 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4808 if (!pmboxq) {
4809 rc = -ENOMEM;
4810 goto job_done;
4811 }
4812 memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
4813
4814 pmb = &pmboxq->u.mb;
4815 memcpy(pmb, pmbx, sizeof(*pmb));
4816 pmb->mbxOwner = OWN_HOST;
4817 pmboxq->vport = vport;
4818
4819 /* If HBA encountered an error attention, allow only DUMP
4820 * or RESTART mailbox commands until the HBA is restarted.
4821 */
4822 if (phba->pport->stopped &&
4823 pmb->mbxCommand != MBX_DUMP_MEMORY &&
4824 pmb->mbxCommand != MBX_RESTART &&
4825 pmb->mbxCommand != MBX_WRITE_VPARMS &&
4826 pmb->mbxCommand != MBX_WRITE_WWN)
4827 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX,
4828 "2797 mbox: Issued mailbox cmd "
4829 "0x%x while in stopped state.\n",
4830 pmb->mbxCommand);
4831
4832 /* extended mailbox commands will need an extended buffer */
4833 if (mbox_req->inExtWLen || mbox_req->outExtWLen) {
4834 from = pmbx;
4835 ext = from + sizeof(MAILBOX_t);
4836 pmboxq->ctx_buf = ext;
4837 pmboxq->in_ext_byte_len =
4838 mbox_req->inExtWLen * sizeof(uint32_t);
4839 pmboxq->out_ext_byte_len =
4840 mbox_req->outExtWLen * sizeof(uint32_t);
4841 pmboxq->mbox_offset_word = mbox_req->mbOffset;
4842 }
4843
4844 /* biu diag will need a kernel buffer to transfer the data
4845 * allocate our own buffer and setup the mailbox command to
4846 * use ours
4847 */
4848 if (pmb->mbxCommand == MBX_RUN_BIU_DIAG64) {
4849 transmit_length = pmb->un.varWords[1];
4850 receive_length = pmb->un.varWords[4];
4851 /* transmit length cannot be greater than receive length or
4852 * mailbox extension size
4853 */
4854 if ((transmit_length > receive_length) ||
4855 (transmit_length > BSG_MBOX_SIZE - sizeof(MAILBOX_t))) {
4856 rc = -ERANGE;
4857 goto job_done;
4858 }
4859 pmb->un.varBIUdiag.un.s2.xmit_bde64.addrHigh =
4860 putPaddrHigh(dmabuf->phys + sizeof(MAILBOX_t));
4861 pmb->un.varBIUdiag.un.s2.xmit_bde64.addrLow =
4862 putPaddrLow(dmabuf->phys + sizeof(MAILBOX_t));
4863
4864 pmb->un.varBIUdiag.un.s2.rcv_bde64.addrHigh =
4865 putPaddrHigh(dmabuf->phys + sizeof(MAILBOX_t)
4866 + pmb->un.varBIUdiag.un.s2.xmit_bde64.tus.f.bdeSize);
4867 pmb->un.varBIUdiag.un.s2.rcv_bde64.addrLow =
4868 putPaddrLow(dmabuf->phys + sizeof(MAILBOX_t)
4869 + pmb->un.varBIUdiag.un.s2.xmit_bde64.tus.f.bdeSize);
4870 } else if (pmb->mbxCommand == MBX_READ_EVENT_LOG) {
4871 rdEventLog = &pmb->un.varRdEventLog;
4872 receive_length = rdEventLog->rcv_bde64.tus.f.bdeSize;
4873 mode = bf_get(lpfc_event_log, rdEventLog);
4874
4875 /* receive length cannot be greater than mailbox
4876 * extension size
4877 */
4878 if (receive_length > BSG_MBOX_SIZE - sizeof(MAILBOX_t)) {
4879 rc = -ERANGE;
4880 goto job_done;
4881 }
4882
4883 /* mode zero uses a bde like biu diags command */
4884 if (mode == 0) {
4885 pmb->un.varWords[3] = putPaddrLow(dmabuf->phys
4886 + sizeof(MAILBOX_t));
4887 pmb->un.varWords[4] = putPaddrHigh(dmabuf->phys
4888 + sizeof(MAILBOX_t));
4889 }
4890 } else if (phba->sli_rev == LPFC_SLI_REV4) {
4891 /* Let type 4 (well known data) through because the data is
4892 * returned in varwords[4-8]
4893 * otherwise check the recieve length and fetch the buffer addr
4894 */
4895 if ((pmb->mbxCommand == MBX_DUMP_MEMORY) &&
4896 (pmb->un.varDmp.type != DMP_WELL_KNOWN)) {
4897 /* rebuild the command for sli4 using our own buffers
4898 * like we do for biu diags
4899 */
4900 receive_length = pmb->un.varWords[2];
4901 /* receive length cannot be greater than mailbox
4902 * extension size
4903 */
4904 if (receive_length == 0) {
4905 rc = -ERANGE;
4906 goto job_done;
4907 }
4908 pmb->un.varWords[3] = putPaddrLow(dmabuf->phys
4909 + sizeof(MAILBOX_t));
4910 pmb->un.varWords[4] = putPaddrHigh(dmabuf->phys
4911 + sizeof(MAILBOX_t));
4912 } else if ((pmb->mbxCommand == MBX_UPDATE_CFG) &&
4913 pmb->un.varUpdateCfg.co) {
4914 bde = (struct ulp_bde64 *)&pmb->un.varWords[4];
4915
4916 /* bde size cannot be greater than mailbox ext size */
4917 if (bde->tus.f.bdeSize >
4918 BSG_MBOX_SIZE - sizeof(MAILBOX_t)) {
4919 rc = -ERANGE;
4920 goto job_done;
4921 }
4922 bde->addrHigh = putPaddrHigh(dmabuf->phys
4923 + sizeof(MAILBOX_t));
4924 bde->addrLow = putPaddrLow(dmabuf->phys
4925 + sizeof(MAILBOX_t));
4926 } else if (pmb->mbxCommand == MBX_SLI4_CONFIG) {
4927 /* Handling non-embedded SLI_CONFIG mailbox command */
4928 sli4_config = &pmboxq->u.mqe.un.sli4_config;
4929 if (!bf_get(lpfc_mbox_hdr_emb,
4930 &sli4_config->header.cfg_mhdr)) {
4931 /* rebuild the command for sli4 using our
4932 * own buffers like we do for biu diags
4933 */
4934 nembed_sge = (struct lpfc_mbx_nembed_cmd *)
4935 &pmb->un.varWords[0];
4936 receive_length = nembed_sge->sge[0].length;
4937
4938 /* receive length cannot be greater than
4939 * mailbox extension size
4940 */
4941 if ((receive_length == 0) ||
4942 (receive_length >
4943 BSG_MBOX_SIZE - sizeof(MAILBOX_t))) {
4944 rc = -ERANGE;
4945 goto job_done;
4946 }
4947
4948 nembed_sge->sge[0].pa_hi =
4949 putPaddrHigh(dmabuf->phys
4950 + sizeof(MAILBOX_t));
4951 nembed_sge->sge[0].pa_lo =
4952 putPaddrLow(dmabuf->phys
4953 + sizeof(MAILBOX_t));
4954 }
4955 }
4956 }
4957
4958 dd_data->context_un.mbox.dmabuffers = dmabuf;
4959
4960 /* setup wake call as IOCB callback */
4961 pmboxq->mbox_cmpl = lpfc_bsg_issue_mbox_cmpl;
4962
4963 /* setup context field to pass wait_queue pointer to wake function */
4964 pmboxq->ctx_ndlp = dd_data;
4965 dd_data->type = TYPE_MBOX;
4966 dd_data->set_job = job;
4967 dd_data->context_un.mbox.pmboxq = pmboxq;
4968 dd_data->context_un.mbox.mb = (MAILBOX_t *)pmbx;
4969 dd_data->context_un.mbox.ext = ext;
4970 dd_data->context_un.mbox.mbOffset = mbox_req->mbOffset;
4971 dd_data->context_un.mbox.inExtWLen = mbox_req->inExtWLen;
4972 dd_data->context_un.mbox.outExtWLen = mbox_req->outExtWLen;
4973 job->dd_data = dd_data;
4974
4975 if ((vport->fc_flag & FC_OFFLINE_MODE) ||
4976 (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE))) {
4977 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
4978 if (rc != MBX_SUCCESS) {
4979 rc = (rc == MBX_TIMEOUT) ? -ETIME : -ENODEV;
4980 goto job_done;
4981 }
4982
4983 /* job finished, copy the data */
4984 memcpy(pmbx, pmb, sizeof(*pmb));
4985 bsg_reply->reply_payload_rcv_len =
4986 sg_copy_from_buffer(job->reply_payload.sg_list,
4987 job->reply_payload.sg_cnt,
4988 pmbx, size);
4989 /* not waiting mbox already done */
4990 rc = 0;
4991 goto job_done;
4992 }
4993
4994 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
4995 if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY))
4996 return 1; /* job started */
4997
4998 job_done:
4999 /* common exit for error or job completed inline */
5000 if (pmboxq)
5001 mempool_free(pmboxq, phba->mbox_mem_pool);
5002 lpfc_bsg_dma_page_free(phba, dmabuf);
5003 kfree(dd_data);
5004
5005 job_cont:
5006 return rc;
5007 }
5008
5009 /**
5010 * lpfc_bsg_mbox_cmd - process an fc bsg LPFC_BSG_VENDOR_MBOX command
5011 * @job: MBOX fc_bsg_job for LPFC_BSG_VENDOR_MBOX.
5012 **/
5013 static int
lpfc_bsg_mbox_cmd(struct bsg_job * job)5014 lpfc_bsg_mbox_cmd(struct bsg_job *job)
5015 {
5016 struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
5017 struct fc_bsg_request *bsg_request = job->request;
5018 struct fc_bsg_reply *bsg_reply = job->reply;
5019 struct lpfc_hba *phba = vport->phba;
5020 struct dfc_mbox_req *mbox_req;
5021 int rc = 0;
5022
5023 /* mix-and-match backward compatibility */
5024 bsg_reply->reply_payload_rcv_len = 0;
5025 if (job->request_len <
5026 sizeof(struct fc_bsg_request) + sizeof(struct dfc_mbox_req)) {
5027 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
5028 "2737 Mix-and-match backward compatibility "
5029 "between MBOX_REQ old size:%d and "
5030 "new request size:%d\n",
5031 (int)(job->request_len -
5032 sizeof(struct fc_bsg_request)),
5033 (int)sizeof(struct dfc_mbox_req));
5034 mbox_req = (struct dfc_mbox_req *)
5035 bsg_request->rqst_data.h_vendor.vendor_cmd;
5036 mbox_req->extMboxTag = 0;
5037 mbox_req->extSeqNum = 0;
5038 }
5039
5040 rc = lpfc_bsg_issue_mbox(phba, job, vport);
5041
5042 if (rc == 0) {
5043 /* job done */
5044 bsg_reply->result = 0;
5045 job->dd_data = NULL;
5046 bsg_job_done(job, bsg_reply->result,
5047 bsg_reply->reply_payload_rcv_len);
5048 } else if (rc == 1)
5049 /* job submitted, will complete later*/
5050 rc = 0; /* return zero, no error */
5051 else {
5052 /* some error occurred */
5053 bsg_reply->result = rc;
5054 job->dd_data = NULL;
5055 }
5056
5057 return rc;
5058 }
5059
5060 /**
5061 * lpfc_bsg_menlo_cmd_cmp - lpfc_menlo_cmd completion handler
5062 * @phba: Pointer to HBA context object.
5063 * @cmdiocbq: Pointer to command iocb.
5064 * @rspiocbq: Pointer to response iocb.
5065 *
5066 * This function is the completion handler for iocbs issued using
5067 * lpfc_menlo_cmd function. This function is called by the
5068 * ring event handler function without any lock held. This function
5069 * can be called from both worker thread context and interrupt
5070 * context. This function also can be called from another thread which
5071 * cleans up the SLI layer objects.
5072 * This function copies the contents of the response iocb to the
5073 * response iocb memory object provided by the caller of
5074 * lpfc_sli_issue_iocb_wait and then wakes up the thread which
5075 * sleeps for the iocb completion.
5076 **/
5077 static void
lpfc_bsg_menlo_cmd_cmp(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocbq,struct lpfc_iocbq * rspiocbq)5078 lpfc_bsg_menlo_cmd_cmp(struct lpfc_hba *phba,
5079 struct lpfc_iocbq *cmdiocbq,
5080 struct lpfc_iocbq *rspiocbq)
5081 {
5082 struct bsg_job_data *dd_data;
5083 struct bsg_job *job;
5084 struct fc_bsg_reply *bsg_reply;
5085 IOCB_t *rsp;
5086 struct lpfc_dmabuf *bmp, *cmp, *rmp;
5087 struct lpfc_bsg_menlo *menlo;
5088 unsigned long flags;
5089 struct menlo_response *menlo_resp;
5090 unsigned int rsp_size;
5091 int rc = 0;
5092
5093 dd_data = cmdiocbq->context1;
5094 cmp = cmdiocbq->context2;
5095 bmp = cmdiocbq->context3;
5096 menlo = &dd_data->context_un.menlo;
5097 rmp = menlo->rmp;
5098 rsp = &rspiocbq->iocb;
5099
5100 /* Determine if job has been aborted */
5101 spin_lock_irqsave(&phba->ct_ev_lock, flags);
5102 job = dd_data->set_job;
5103 if (job) {
5104 bsg_reply = job->reply;
5105 /* Prevent timeout handling from trying to abort job */
5106 job->dd_data = NULL;
5107 }
5108 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
5109
5110 /* Copy the job data or set the failing status for the job */
5111
5112 if (job) {
5113 /* always return the xri, this would be used in the case
5114 * of a menlo download to allow the data to be sent as a
5115 * continuation of the exchange.
5116 */
5117
5118 menlo_resp = (struct menlo_response *)
5119 bsg_reply->reply_data.vendor_reply.vendor_rsp;
5120 menlo_resp->xri = rsp->ulpContext;
5121 if (rsp->ulpStatus) {
5122 if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
5123 switch (rsp->un.ulpWord[4] & IOERR_PARAM_MASK) {
5124 case IOERR_SEQUENCE_TIMEOUT:
5125 rc = -ETIMEDOUT;
5126 break;
5127 case IOERR_INVALID_RPI:
5128 rc = -EFAULT;
5129 break;
5130 default:
5131 rc = -EACCES;
5132 break;
5133 }
5134 } else {
5135 rc = -EACCES;
5136 }
5137 } else {
5138 rsp_size = rsp->un.genreq64.bdl.bdeSize;
5139 bsg_reply->reply_payload_rcv_len =
5140 lpfc_bsg_copy_data(rmp, &job->reply_payload,
5141 rsp_size, 0);
5142 }
5143
5144 }
5145
5146 lpfc_sli_release_iocbq(phba, cmdiocbq);
5147 lpfc_free_bsg_buffers(phba, cmp);
5148 lpfc_free_bsg_buffers(phba, rmp);
5149 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
5150 kfree(bmp);
5151 kfree(dd_data);
5152
5153 /* Complete the job if active */
5154
5155 if (job) {
5156 bsg_reply->result = rc;
5157 bsg_job_done(job, bsg_reply->result,
5158 bsg_reply->reply_payload_rcv_len);
5159 }
5160
5161 return;
5162 }
5163
5164 /**
5165 * lpfc_menlo_cmd - send an ioctl for menlo hardware
5166 * @job: fc_bsg_job to handle
5167 *
5168 * This function issues a gen request 64 CR ioctl for all menlo cmd requests,
5169 * all the command completions will return the xri for the command.
5170 * For menlo data requests a gen request 64 CX is used to continue the exchange
5171 * supplied in the menlo request header xri field.
5172 **/
5173 static int
lpfc_menlo_cmd(struct bsg_job * job)5174 lpfc_menlo_cmd(struct bsg_job *job)
5175 {
5176 struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
5177 struct fc_bsg_request *bsg_request = job->request;
5178 struct fc_bsg_reply *bsg_reply = job->reply;
5179 struct lpfc_hba *phba = vport->phba;
5180 struct lpfc_iocbq *cmdiocbq;
5181 IOCB_t *cmd;
5182 int rc = 0;
5183 struct menlo_command *menlo_cmd;
5184 struct lpfc_dmabuf *bmp = NULL, *cmp = NULL, *rmp = NULL;
5185 int request_nseg;
5186 int reply_nseg;
5187 struct bsg_job_data *dd_data;
5188 struct ulp_bde64 *bpl = NULL;
5189
5190 /* in case no data is returned return just the return code */
5191 bsg_reply->reply_payload_rcv_len = 0;
5192
5193 if (job->request_len <
5194 sizeof(struct fc_bsg_request) +
5195 sizeof(struct menlo_command)) {
5196 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
5197 "2784 Received MENLO_CMD request below "
5198 "minimum size\n");
5199 rc = -ERANGE;
5200 goto no_dd_data;
5201 }
5202
5203 if (job->reply_len < sizeof(*bsg_reply) +
5204 sizeof(struct menlo_response)) {
5205 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
5206 "2785 Received MENLO_CMD reply below "
5207 "minimum size\n");
5208 rc = -ERANGE;
5209 goto no_dd_data;
5210 }
5211
5212 if (!(phba->menlo_flag & HBA_MENLO_SUPPORT)) {
5213 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
5214 "2786 Adapter does not support menlo "
5215 "commands\n");
5216 rc = -EPERM;
5217 goto no_dd_data;
5218 }
5219
5220 menlo_cmd = (struct menlo_command *)
5221 bsg_request->rqst_data.h_vendor.vendor_cmd;
5222
5223 /* allocate our bsg tracking structure */
5224 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
5225 if (!dd_data) {
5226 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
5227 "2787 Failed allocation of dd_data\n");
5228 rc = -ENOMEM;
5229 goto no_dd_data;
5230 }
5231
5232 bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
5233 if (!bmp) {
5234 rc = -ENOMEM;
5235 goto free_dd;
5236 }
5237
5238 bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys);
5239 if (!bmp->virt) {
5240 rc = -ENOMEM;
5241 goto free_bmp;
5242 }
5243
5244 INIT_LIST_HEAD(&bmp->list);
5245
5246 bpl = (struct ulp_bde64 *)bmp->virt;
5247 request_nseg = LPFC_BPL_SIZE/sizeof(struct ulp_bde64);
5248 cmp = lpfc_alloc_bsg_buffers(phba, job->request_payload.payload_len,
5249 1, bpl, &request_nseg);
5250 if (!cmp) {
5251 rc = -ENOMEM;
5252 goto free_bmp;
5253 }
5254 lpfc_bsg_copy_data(cmp, &job->request_payload,
5255 job->request_payload.payload_len, 1);
5256
5257 bpl += request_nseg;
5258 reply_nseg = LPFC_BPL_SIZE/sizeof(struct ulp_bde64) - request_nseg;
5259 rmp = lpfc_alloc_bsg_buffers(phba, job->reply_payload.payload_len, 0,
5260 bpl, &reply_nseg);
5261 if (!rmp) {
5262 rc = -ENOMEM;
5263 goto free_cmp;
5264 }
5265
5266 cmdiocbq = lpfc_sli_get_iocbq(phba);
5267 if (!cmdiocbq) {
5268 rc = -ENOMEM;
5269 goto free_rmp;
5270 }
5271
5272 cmd = &cmdiocbq->iocb;
5273 cmd->un.genreq64.bdl.ulpIoTag32 = 0;
5274 cmd->un.genreq64.bdl.addrHigh = putPaddrHigh(bmp->phys);
5275 cmd->un.genreq64.bdl.addrLow = putPaddrLow(bmp->phys);
5276 cmd->un.genreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
5277 cmd->un.genreq64.bdl.bdeSize =
5278 (request_nseg + reply_nseg) * sizeof(struct ulp_bde64);
5279 cmd->un.genreq64.w5.hcsw.Fctl = (SI | LA);
5280 cmd->un.genreq64.w5.hcsw.Dfctl = 0;
5281 cmd->un.genreq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CMD;
5282 cmd->un.genreq64.w5.hcsw.Type = MENLO_TRANSPORT_TYPE; /* 0xfe */
5283 cmd->ulpBdeCount = 1;
5284 cmd->ulpClass = CLASS3;
5285 cmd->ulpOwner = OWN_CHIP;
5286 cmd->ulpLe = 1; /* Limited Edition */
5287 cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
5288 cmdiocbq->vport = phba->pport;
5289 /* We want the firmware to timeout before we do */
5290 cmd->ulpTimeout = MENLO_TIMEOUT - 5;
5291 cmdiocbq->iocb_cmpl = lpfc_bsg_menlo_cmd_cmp;
5292 cmdiocbq->context1 = dd_data;
5293 cmdiocbq->context2 = cmp;
5294 cmdiocbq->context3 = bmp;
5295 if (menlo_cmd->cmd == LPFC_BSG_VENDOR_MENLO_CMD) {
5296 cmd->ulpCommand = CMD_GEN_REQUEST64_CR;
5297 cmd->ulpPU = MENLO_PU; /* 3 */
5298 cmd->un.ulpWord[4] = MENLO_DID; /* 0x0000FC0E */
5299 cmd->ulpContext = MENLO_CONTEXT; /* 0 */
5300 } else {
5301 cmd->ulpCommand = CMD_GEN_REQUEST64_CX;
5302 cmd->ulpPU = 1;
5303 cmd->un.ulpWord[4] = 0;
5304 cmd->ulpContext = menlo_cmd->xri;
5305 }
5306
5307 dd_data->type = TYPE_MENLO;
5308 dd_data->set_job = job;
5309 dd_data->context_un.menlo.cmdiocbq = cmdiocbq;
5310 dd_data->context_un.menlo.rmp = rmp;
5311 job->dd_data = dd_data;
5312
5313 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq,
5314 MENLO_TIMEOUT - 5);
5315 if (rc == IOCB_SUCCESS)
5316 return 0; /* done for now */
5317
5318 lpfc_sli_release_iocbq(phba, cmdiocbq);
5319
5320 free_rmp:
5321 lpfc_free_bsg_buffers(phba, rmp);
5322 free_cmp:
5323 lpfc_free_bsg_buffers(phba, cmp);
5324 free_bmp:
5325 if (bmp->virt)
5326 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
5327 kfree(bmp);
5328 free_dd:
5329 kfree(dd_data);
5330 no_dd_data:
5331 /* make error code available to userspace */
5332 bsg_reply->result = rc;
5333 job->dd_data = NULL;
5334 return rc;
5335 }
5336
5337 static int
lpfc_forced_link_speed(struct bsg_job * job)5338 lpfc_forced_link_speed(struct bsg_job *job)
5339 {
5340 struct Scsi_Host *shost = fc_bsg_to_shost(job);
5341 struct lpfc_vport *vport = shost_priv(shost);
5342 struct lpfc_hba *phba = vport->phba;
5343 struct fc_bsg_reply *bsg_reply = job->reply;
5344 struct forced_link_speed_support_reply *forced_reply;
5345 int rc = 0;
5346
5347 if (job->request_len <
5348 sizeof(struct fc_bsg_request) +
5349 sizeof(struct get_forced_link_speed_support)) {
5350 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
5351 "0048 Received FORCED_LINK_SPEED request "
5352 "below minimum size\n");
5353 rc = -EINVAL;
5354 goto job_error;
5355 }
5356
5357 forced_reply = (struct forced_link_speed_support_reply *)
5358 bsg_reply->reply_data.vendor_reply.vendor_rsp;
5359
5360 if (job->reply_len < sizeof(*bsg_reply) + sizeof(*forced_reply)) {
5361 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
5362 "0049 Received FORCED_LINK_SPEED reply below "
5363 "minimum size\n");
5364 rc = -EINVAL;
5365 goto job_error;
5366 }
5367
5368 forced_reply->supported = (phba->hba_flag & HBA_FORCED_LINK_SPEED)
5369 ? LPFC_FORCED_LINK_SPEED_SUPPORTED
5370 : LPFC_FORCED_LINK_SPEED_NOT_SUPPORTED;
5371 job_error:
5372 bsg_reply->result = rc;
5373 if (rc == 0)
5374 bsg_job_done(job, bsg_reply->result,
5375 bsg_reply->reply_payload_rcv_len);
5376 return rc;
5377 }
5378
5379 /**
5380 * lpfc_check_fwlog_support: Check FW log support on the adapter
5381 * @phba: Pointer to HBA context object.
5382 *
5383 * Check if FW Logging support by the adapter
5384 **/
5385 int
lpfc_check_fwlog_support(struct lpfc_hba * phba)5386 lpfc_check_fwlog_support(struct lpfc_hba *phba)
5387 {
5388 struct lpfc_ras_fwlog *ras_fwlog = NULL;
5389
5390 ras_fwlog = &phba->ras_fwlog;
5391
5392 if (ras_fwlog->ras_hwsupport == false)
5393 return -EACCES;
5394 else if (ras_fwlog->ras_enabled == false)
5395 return -EPERM;
5396 else
5397 return 0;
5398 }
5399
5400 /**
5401 * lpfc_bsg_get_ras_config: Get RAS configuration settings
5402 * @job: fc_bsg_job to handle
5403 *
5404 * Get RAS configuration values set.
5405 **/
5406 static int
lpfc_bsg_get_ras_config(struct bsg_job * job)5407 lpfc_bsg_get_ras_config(struct bsg_job *job)
5408 {
5409 struct Scsi_Host *shost = fc_bsg_to_shost(job);
5410 struct lpfc_vport *vport = shost_priv(shost);
5411 struct fc_bsg_reply *bsg_reply = job->reply;
5412 struct lpfc_hba *phba = vport->phba;
5413 struct lpfc_bsg_get_ras_config_reply *ras_reply;
5414 struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog;
5415 int rc = 0;
5416
5417 if (job->request_len <
5418 sizeof(struct fc_bsg_request) +
5419 sizeof(struct lpfc_bsg_ras_req)) {
5420 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
5421 "6192 FW_LOG request received "
5422 "below minimum size\n");
5423 rc = -EINVAL;
5424 goto ras_job_error;
5425 }
5426
5427 /* Check FW log status */
5428 rc = lpfc_check_fwlog_support(phba);
5429 if (rc)
5430 goto ras_job_error;
5431
5432 ras_reply = (struct lpfc_bsg_get_ras_config_reply *)
5433 bsg_reply->reply_data.vendor_reply.vendor_rsp;
5434
5435 /* Current logging state */
5436 spin_lock_irq(&phba->hbalock);
5437 if (ras_fwlog->state == ACTIVE)
5438 ras_reply->state = LPFC_RASLOG_STATE_RUNNING;
5439 else
5440 ras_reply->state = LPFC_RASLOG_STATE_STOPPED;
5441 spin_unlock_irq(&phba->hbalock);
5442
5443 ras_reply->log_level = phba->ras_fwlog.fw_loglevel;
5444 ras_reply->log_buff_sz = phba->cfg_ras_fwlog_buffsize;
5445
5446 ras_job_error:
5447 /* make error code available to userspace */
5448 bsg_reply->result = rc;
5449
5450 /* complete the job back to userspace */
5451 if (!rc)
5452 bsg_job_done(job, bsg_reply->result,
5453 bsg_reply->reply_payload_rcv_len);
5454 return rc;
5455 }
5456
5457 /**
5458 * lpfc_bsg_set_ras_config: Set FW logging parameters
5459 * @job: fc_bsg_job to handle
5460 *
5461 * Set log-level parameters for FW-logging in host memory
5462 **/
5463 static int
lpfc_bsg_set_ras_config(struct bsg_job * job)5464 lpfc_bsg_set_ras_config(struct bsg_job *job)
5465 {
5466 struct Scsi_Host *shost = fc_bsg_to_shost(job);
5467 struct lpfc_vport *vport = shost_priv(shost);
5468 struct lpfc_hba *phba = vport->phba;
5469 struct lpfc_bsg_set_ras_config_req *ras_req;
5470 struct fc_bsg_request *bsg_request = job->request;
5471 struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog;
5472 struct fc_bsg_reply *bsg_reply = job->reply;
5473 uint8_t action = 0, log_level = 0;
5474 int rc = 0, action_status = 0;
5475
5476 if (job->request_len <
5477 sizeof(struct fc_bsg_request) +
5478 sizeof(struct lpfc_bsg_set_ras_config_req)) {
5479 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
5480 "6182 Received RAS_LOG request "
5481 "below minimum size\n");
5482 rc = -EINVAL;
5483 goto ras_job_error;
5484 }
5485
5486 /* Check FW log status */
5487 rc = lpfc_check_fwlog_support(phba);
5488 if (rc)
5489 goto ras_job_error;
5490
5491 ras_req = (struct lpfc_bsg_set_ras_config_req *)
5492 bsg_request->rqst_data.h_vendor.vendor_cmd;
5493 action = ras_req->action;
5494 log_level = ras_req->log_level;
5495
5496 if (action == LPFC_RASACTION_STOP_LOGGING) {
5497 /* Check if already disabled */
5498 spin_lock_irq(&phba->hbalock);
5499 if (ras_fwlog->state != ACTIVE) {
5500 spin_unlock_irq(&phba->hbalock);
5501 rc = -ESRCH;
5502 goto ras_job_error;
5503 }
5504 spin_unlock_irq(&phba->hbalock);
5505
5506 /* Disable logging */
5507 lpfc_ras_stop_fwlog(phba);
5508 } else {
5509 /*action = LPFC_RASACTION_START_LOGGING*/
5510
5511 /* Even though FW-logging is active re-initialize
5512 * FW-logging with new log-level. Return status
5513 * "Logging already Running" to caller.
5514 **/
5515 spin_lock_irq(&phba->hbalock);
5516 if (ras_fwlog->state != INACTIVE)
5517 action_status = -EINPROGRESS;
5518 spin_unlock_irq(&phba->hbalock);
5519
5520 /* Enable logging */
5521 rc = lpfc_sli4_ras_fwlog_init(phba, log_level,
5522 LPFC_RAS_ENABLE_LOGGING);
5523 if (rc) {
5524 rc = -EINVAL;
5525 goto ras_job_error;
5526 }
5527
5528 /* Check if FW-logging is re-initialized */
5529 if (action_status == -EINPROGRESS)
5530 rc = action_status;
5531 }
5532 ras_job_error:
5533 /* make error code available to userspace */
5534 bsg_reply->result = rc;
5535
5536 /* complete the job back to userspace */
5537 if (!rc)
5538 bsg_job_done(job, bsg_reply->result,
5539 bsg_reply->reply_payload_rcv_len);
5540
5541 return rc;
5542 }
5543
5544 /**
5545 * lpfc_bsg_get_ras_lwpd: Get log write position data
5546 * @job: fc_bsg_job to handle
5547 *
5548 * Get Offset/Wrap count of the log message written
5549 * in host memory
5550 **/
5551 static int
lpfc_bsg_get_ras_lwpd(struct bsg_job * job)5552 lpfc_bsg_get_ras_lwpd(struct bsg_job *job)
5553 {
5554 struct Scsi_Host *shost = fc_bsg_to_shost(job);
5555 struct lpfc_vport *vport = shost_priv(shost);
5556 struct lpfc_bsg_get_ras_lwpd *ras_reply;
5557 struct lpfc_hba *phba = vport->phba;
5558 struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog;
5559 struct fc_bsg_reply *bsg_reply = job->reply;
5560 u32 *lwpd_ptr = NULL;
5561 int rc = 0;
5562
5563 rc = lpfc_check_fwlog_support(phba);
5564 if (rc)
5565 goto ras_job_error;
5566
5567 if (job->request_len <
5568 sizeof(struct fc_bsg_request) +
5569 sizeof(struct lpfc_bsg_ras_req)) {
5570 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
5571 "6183 Received RAS_LOG request "
5572 "below minimum size\n");
5573 rc = -EINVAL;
5574 goto ras_job_error;
5575 }
5576
5577 ras_reply = (struct lpfc_bsg_get_ras_lwpd *)
5578 bsg_reply->reply_data.vendor_reply.vendor_rsp;
5579
5580 if (!ras_fwlog->lwpd.virt) {
5581 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
5582 "6193 Restart FW Logging\n");
5583 rc = -EINVAL;
5584 goto ras_job_error;
5585 }
5586
5587 /* Get lwpd offset */
5588 lwpd_ptr = (uint32_t *)(ras_fwlog->lwpd.virt);
5589 ras_reply->offset = be32_to_cpu(*lwpd_ptr & 0xffffffff);
5590
5591 /* Get wrap count */
5592 ras_reply->wrap_count = be32_to_cpu(*(++lwpd_ptr) & 0xffffffff);
5593
5594 ras_job_error:
5595 /* make error code available to userspace */
5596 bsg_reply->result = rc;
5597
5598 /* complete the job back to userspace */
5599 if (!rc)
5600 bsg_job_done(job, bsg_reply->result,
5601 bsg_reply->reply_payload_rcv_len);
5602
5603 return rc;
5604 }
5605
5606 /**
5607 * lpfc_bsg_get_ras_fwlog: Read FW log
5608 * @job: fc_bsg_job to handle
5609 *
5610 * Copy the FW log into the passed buffer.
5611 **/
5612 static int
lpfc_bsg_get_ras_fwlog(struct bsg_job * job)5613 lpfc_bsg_get_ras_fwlog(struct bsg_job *job)
5614 {
5615 struct Scsi_Host *shost = fc_bsg_to_shost(job);
5616 struct lpfc_vport *vport = shost_priv(shost);
5617 struct lpfc_hba *phba = vport->phba;
5618 struct fc_bsg_request *bsg_request = job->request;
5619 struct fc_bsg_reply *bsg_reply = job->reply;
5620 struct lpfc_bsg_get_fwlog_req *ras_req;
5621 u32 rd_offset, rd_index, offset;
5622 void *src, *fwlog_buff;
5623 struct lpfc_ras_fwlog *ras_fwlog = NULL;
5624 struct lpfc_dmabuf *dmabuf, *next;
5625 int rc = 0;
5626
5627 ras_fwlog = &phba->ras_fwlog;
5628
5629 rc = lpfc_check_fwlog_support(phba);
5630 if (rc)
5631 goto ras_job_error;
5632
5633 /* Logging to be stopped before reading */
5634 spin_lock_irq(&phba->hbalock);
5635 if (ras_fwlog->state == ACTIVE) {
5636 spin_unlock_irq(&phba->hbalock);
5637 rc = -EINPROGRESS;
5638 goto ras_job_error;
5639 }
5640 spin_unlock_irq(&phba->hbalock);
5641
5642 if (job->request_len <
5643 sizeof(struct fc_bsg_request) +
5644 sizeof(struct lpfc_bsg_get_fwlog_req)) {
5645 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
5646 "6184 Received RAS_LOG request "
5647 "below minimum size\n");
5648 rc = -EINVAL;
5649 goto ras_job_error;
5650 }
5651
5652 ras_req = (struct lpfc_bsg_get_fwlog_req *)
5653 bsg_request->rqst_data.h_vendor.vendor_cmd;
5654 rd_offset = ras_req->read_offset;
5655
5656 /* Allocate memory to read fw log*/
5657 fwlog_buff = vmalloc(ras_req->read_size);
5658 if (!fwlog_buff) {
5659 rc = -ENOMEM;
5660 goto ras_job_error;
5661 }
5662
5663 rd_index = (rd_offset / LPFC_RAS_MAX_ENTRY_SIZE);
5664 offset = (rd_offset % LPFC_RAS_MAX_ENTRY_SIZE);
5665
5666 list_for_each_entry_safe(dmabuf, next,
5667 &ras_fwlog->fwlog_buff_list, list) {
5668
5669 if (dmabuf->buffer_tag < rd_index)
5670 continue;
5671
5672 src = dmabuf->virt + offset;
5673 memcpy(fwlog_buff, src, ras_req->read_size);
5674 break;
5675 }
5676
5677 bsg_reply->reply_payload_rcv_len =
5678 sg_copy_from_buffer(job->reply_payload.sg_list,
5679 job->reply_payload.sg_cnt,
5680 fwlog_buff, ras_req->read_size);
5681
5682 vfree(fwlog_buff);
5683
5684 ras_job_error:
5685 bsg_reply->result = rc;
5686 if (!rc)
5687 bsg_job_done(job, bsg_reply->result,
5688 bsg_reply->reply_payload_rcv_len);
5689
5690 return rc;
5691 }
5692
5693 static int
lpfc_get_trunk_info(struct bsg_job * job)5694 lpfc_get_trunk_info(struct bsg_job *job)
5695 {
5696 struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
5697 struct lpfc_hba *phba = vport->phba;
5698 struct fc_bsg_reply *bsg_reply = job->reply;
5699 struct lpfc_trunk_info *event_reply;
5700 int rc = 0;
5701
5702 if (job->request_len <
5703 sizeof(struct fc_bsg_request) + sizeof(struct get_trunk_info_req)) {
5704 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
5705 "2744 Received GET TRUNK _INFO request below "
5706 "minimum size\n");
5707 rc = -EINVAL;
5708 goto job_error;
5709 }
5710
5711 event_reply = (struct lpfc_trunk_info *)
5712 bsg_reply->reply_data.vendor_reply.vendor_rsp;
5713
5714 if (job->reply_len < sizeof(*bsg_reply) + sizeof(*event_reply)) {
5715 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
5716 "2728 Received GET TRUNK _INFO reply below "
5717 "minimum size\n");
5718 rc = -EINVAL;
5719 goto job_error;
5720 }
5721 if (event_reply == NULL) {
5722 rc = -EINVAL;
5723 goto job_error;
5724 }
5725
5726 bsg_bf_set(lpfc_trunk_info_link_status, event_reply,
5727 (phba->link_state >= LPFC_LINK_UP) ? 1 : 0);
5728
5729 bsg_bf_set(lpfc_trunk_info_trunk_active0, event_reply,
5730 (phba->trunk_link.link0.state == LPFC_LINK_UP) ? 1 : 0);
5731
5732 bsg_bf_set(lpfc_trunk_info_trunk_active1, event_reply,
5733 (phba->trunk_link.link1.state == LPFC_LINK_UP) ? 1 : 0);
5734
5735 bsg_bf_set(lpfc_trunk_info_trunk_active2, event_reply,
5736 (phba->trunk_link.link2.state == LPFC_LINK_UP) ? 1 : 0);
5737
5738 bsg_bf_set(lpfc_trunk_info_trunk_active3, event_reply,
5739 (phba->trunk_link.link3.state == LPFC_LINK_UP) ? 1 : 0);
5740
5741 bsg_bf_set(lpfc_trunk_info_trunk_config0, event_reply,
5742 bf_get(lpfc_conf_trunk_port0, &phba->sli4_hba));
5743
5744 bsg_bf_set(lpfc_trunk_info_trunk_config1, event_reply,
5745 bf_get(lpfc_conf_trunk_port1, &phba->sli4_hba));
5746
5747 bsg_bf_set(lpfc_trunk_info_trunk_config2, event_reply,
5748 bf_get(lpfc_conf_trunk_port2, &phba->sli4_hba));
5749
5750 bsg_bf_set(lpfc_trunk_info_trunk_config3, event_reply,
5751 bf_get(lpfc_conf_trunk_port3, &phba->sli4_hba));
5752
5753 event_reply->port_speed = phba->sli4_hba.link_state.speed / 1000;
5754 event_reply->logical_speed =
5755 phba->sli4_hba.link_state.logical_speed / 1000;
5756 job_error:
5757 bsg_reply->result = rc;
5758 if (!rc)
5759 bsg_job_done(job, bsg_reply->result,
5760 bsg_reply->reply_payload_rcv_len);
5761 return rc;
5762
5763 }
5764
5765 /**
5766 * lpfc_bsg_hst_vendor - process a vendor-specific fc_bsg_job
5767 * @job: fc_bsg_job to handle
5768 **/
5769 static int
lpfc_bsg_hst_vendor(struct bsg_job * job)5770 lpfc_bsg_hst_vendor(struct bsg_job *job)
5771 {
5772 struct fc_bsg_request *bsg_request = job->request;
5773 struct fc_bsg_reply *bsg_reply = job->reply;
5774 int command = bsg_request->rqst_data.h_vendor.vendor_cmd[0];
5775 int rc;
5776
5777 switch (command) {
5778 case LPFC_BSG_VENDOR_SET_CT_EVENT:
5779 rc = lpfc_bsg_hba_set_event(job);
5780 break;
5781 case LPFC_BSG_VENDOR_GET_CT_EVENT:
5782 rc = lpfc_bsg_hba_get_event(job);
5783 break;
5784 case LPFC_BSG_VENDOR_SEND_MGMT_RESP:
5785 rc = lpfc_bsg_send_mgmt_rsp(job);
5786 break;
5787 case LPFC_BSG_VENDOR_DIAG_MODE:
5788 rc = lpfc_bsg_diag_loopback_mode(job);
5789 break;
5790 case LPFC_BSG_VENDOR_DIAG_MODE_END:
5791 rc = lpfc_sli4_bsg_diag_mode_end(job);
5792 break;
5793 case LPFC_BSG_VENDOR_DIAG_RUN_LOOPBACK:
5794 rc = lpfc_bsg_diag_loopback_run(job);
5795 break;
5796 case LPFC_BSG_VENDOR_LINK_DIAG_TEST:
5797 rc = lpfc_sli4_bsg_link_diag_test(job);
5798 break;
5799 case LPFC_BSG_VENDOR_GET_MGMT_REV:
5800 rc = lpfc_bsg_get_dfc_rev(job);
5801 break;
5802 case LPFC_BSG_VENDOR_MBOX:
5803 rc = lpfc_bsg_mbox_cmd(job);
5804 break;
5805 case LPFC_BSG_VENDOR_MENLO_CMD:
5806 case LPFC_BSG_VENDOR_MENLO_DATA:
5807 rc = lpfc_menlo_cmd(job);
5808 break;
5809 case LPFC_BSG_VENDOR_FORCED_LINK_SPEED:
5810 rc = lpfc_forced_link_speed(job);
5811 break;
5812 case LPFC_BSG_VENDOR_RAS_GET_LWPD:
5813 rc = lpfc_bsg_get_ras_lwpd(job);
5814 break;
5815 case LPFC_BSG_VENDOR_RAS_GET_FWLOG:
5816 rc = lpfc_bsg_get_ras_fwlog(job);
5817 break;
5818 case LPFC_BSG_VENDOR_RAS_GET_CONFIG:
5819 rc = lpfc_bsg_get_ras_config(job);
5820 break;
5821 case LPFC_BSG_VENDOR_RAS_SET_CONFIG:
5822 rc = lpfc_bsg_set_ras_config(job);
5823 break;
5824 case LPFC_BSG_VENDOR_GET_TRUNK_INFO:
5825 rc = lpfc_get_trunk_info(job);
5826 break;
5827 default:
5828 rc = -EINVAL;
5829 bsg_reply->reply_payload_rcv_len = 0;
5830 /* make error code available to userspace */
5831 bsg_reply->result = rc;
5832 break;
5833 }
5834
5835 return rc;
5836 }
5837
5838 /**
5839 * lpfc_bsg_request - handle a bsg request from the FC transport
5840 * @job: bsg_job to handle
5841 **/
5842 int
lpfc_bsg_request(struct bsg_job * job)5843 lpfc_bsg_request(struct bsg_job *job)
5844 {
5845 struct fc_bsg_request *bsg_request = job->request;
5846 struct fc_bsg_reply *bsg_reply = job->reply;
5847 uint32_t msgcode;
5848 int rc;
5849
5850 msgcode = bsg_request->msgcode;
5851 switch (msgcode) {
5852 case FC_BSG_HST_VENDOR:
5853 rc = lpfc_bsg_hst_vendor(job);
5854 break;
5855 case FC_BSG_RPT_ELS:
5856 rc = lpfc_bsg_rport_els(job);
5857 break;
5858 case FC_BSG_RPT_CT:
5859 rc = lpfc_bsg_send_mgmt_cmd(job);
5860 break;
5861 default:
5862 rc = -EINVAL;
5863 bsg_reply->reply_payload_rcv_len = 0;
5864 /* make error code available to userspace */
5865 bsg_reply->result = rc;
5866 break;
5867 }
5868
5869 return rc;
5870 }
5871
5872 /**
5873 * lpfc_bsg_timeout - handle timeout of a bsg request from the FC transport
5874 * @job: bsg_job that has timed out
5875 *
5876 * This function just aborts the job's IOCB. The aborted IOCB will return to
5877 * the waiting function which will handle passing the error back to userspace
5878 **/
5879 int
lpfc_bsg_timeout(struct bsg_job * job)5880 lpfc_bsg_timeout(struct bsg_job *job)
5881 {
5882 struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
5883 struct lpfc_hba *phba = vport->phba;
5884 struct lpfc_iocbq *cmdiocb;
5885 struct lpfc_sli_ring *pring;
5886 struct bsg_job_data *dd_data;
5887 unsigned long flags;
5888 int rc = 0;
5889 LIST_HEAD(completions);
5890 struct lpfc_iocbq *check_iocb, *next_iocb;
5891
5892 pring = lpfc_phba_elsring(phba);
5893 if (unlikely(!pring))
5894 return -EIO;
5895
5896 /* if job's driver data is NULL, the command completed or is in the
5897 * the process of completing. In this case, return status to request
5898 * so the timeout is retried. This avoids double completion issues
5899 * and the request will be pulled off the timer queue when the
5900 * command's completion handler executes. Otherwise, prevent the
5901 * command's completion handler from executing the job done callback
5902 * and continue processing to abort the outstanding the command.
5903 */
5904
5905 spin_lock_irqsave(&phba->ct_ev_lock, flags);
5906 dd_data = (struct bsg_job_data *)job->dd_data;
5907 if (dd_data) {
5908 dd_data->set_job = NULL;
5909 job->dd_data = NULL;
5910 } else {
5911 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
5912 return -EAGAIN;
5913 }
5914
5915 switch (dd_data->type) {
5916 case TYPE_IOCB:
5917 /* Check to see if IOCB was issued to the port or not. If not,
5918 * remove it from the txq queue and call cancel iocbs.
5919 * Otherwise, call abort iotag
5920 */
5921 cmdiocb = dd_data->context_un.iocb.cmdiocbq;
5922 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
5923
5924 spin_lock_irqsave(&phba->hbalock, flags);
5925 /* make sure the I/O abort window is still open */
5926 if (!(cmdiocb->iocb_flag & LPFC_IO_CMD_OUTSTANDING)) {
5927 spin_unlock_irqrestore(&phba->hbalock, flags);
5928 return -EAGAIN;
5929 }
5930 list_for_each_entry_safe(check_iocb, next_iocb, &pring->txq,
5931 list) {
5932 if (check_iocb == cmdiocb) {
5933 list_move_tail(&check_iocb->list, &completions);
5934 break;
5935 }
5936 }
5937 if (list_empty(&completions))
5938 lpfc_sli_issue_abort_iotag(phba, pring, cmdiocb);
5939 spin_unlock_irqrestore(&phba->hbalock, flags);
5940 if (!list_empty(&completions)) {
5941 lpfc_sli_cancel_iocbs(phba, &completions,
5942 IOSTAT_LOCAL_REJECT,
5943 IOERR_SLI_ABORTED);
5944 }
5945 break;
5946
5947 case TYPE_EVT:
5948 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
5949 break;
5950
5951 case TYPE_MBOX:
5952 /* Update the ext buf ctx state if needed */
5953
5954 if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_PORT)
5955 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_ABTS;
5956 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
5957 break;
5958 case TYPE_MENLO:
5959 /* Check to see if IOCB was issued to the port or not. If not,
5960 * remove it from the txq queue and call cancel iocbs.
5961 * Otherwise, call abort iotag.
5962 */
5963 cmdiocb = dd_data->context_un.menlo.cmdiocbq;
5964 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
5965
5966 spin_lock_irqsave(&phba->hbalock, flags);
5967 list_for_each_entry_safe(check_iocb, next_iocb, &pring->txq,
5968 list) {
5969 if (check_iocb == cmdiocb) {
5970 list_move_tail(&check_iocb->list, &completions);
5971 break;
5972 }
5973 }
5974 if (list_empty(&completions))
5975 lpfc_sli_issue_abort_iotag(phba, pring, cmdiocb);
5976 spin_unlock_irqrestore(&phba->hbalock, flags);
5977 if (!list_empty(&completions)) {
5978 lpfc_sli_cancel_iocbs(phba, &completions,
5979 IOSTAT_LOCAL_REJECT,
5980 IOERR_SLI_ABORTED);
5981 }
5982 break;
5983 default:
5984 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
5985 break;
5986 }
5987
5988 /* scsi transport fc fc_bsg_job_timeout expects a zero return code,
5989 * otherwise an error message will be displayed on the console
5990 * so always return success (zero)
5991 */
5992 return rc;
5993 }
5994
