1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2007-2011 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
8 * This program is free software; you can redistribute it and/or *
9 * modify it under the terms of version 2 of the GNU General *
10 * Public License as published by the Free Software Foundation. *
11 * This program is distributed in the hope that it will be useful. *
12 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
13 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
14 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
15 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
16 * TO BE LEGALLY INVALID. See the GNU General Public License for *
17 * more details, a copy of which can be found in the file COPYING *
18 * included with this package. *
19 *******************************************************************/
21 #include <linux/blkdev.h>
22 #include <linux/delay.h>
23 #include <linux/dma-mapping.h>
24 #include <linux/idr.h>
25 #include <linux/interrupt.h>
26 #include <linux/kthread.h>
27 #include <linux/slab.h>
28 #include <linux/pci.h>
29 #include <linux/spinlock.h>
30 #include <linux/ctype.h>
32 #include <scsi/scsi.h>
33 #include <scsi/scsi_device.h>
34 #include <scsi/scsi_host.h>
35 #include <scsi/scsi_transport_fc.h>
40 #include "lpfc_sli4.h"
42 #include "lpfc_disc.h"
43 #include "lpfc_scsi.h"
45 #include "lpfc_logmsg.h"
46 #include "lpfc_crtn.h"
47 #include "lpfc_vport.h"
48 #include "lpfc_version.h"
49 #include "lpfc_compat.h"
50 #include "lpfc_debugfs.h"
52 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
56 * To access this interface the user should:
57 * # mount -t debugfs none /sys/kernel/debug
59 * The lpfc debugfs directory hierarchy is:
60 * /sys/kernel/debug/lpfc/fnX/vportY
61 * where X is the lpfc hba function unique_id
62 * where Y is the vport VPI on that hba
64 * Debugging services available per vport:
66 * This is an ACSII readable file that contains a trace of the last
67 * lpfc_debugfs_max_disc_trc events that happened on a specific vport.
68 * See lpfc_debugfs.h for different categories of discovery events.
69 * To enable the discovery trace, the following module parameters must be set:
70 * lpfc_debugfs_enable=1 Turns on lpfc debugfs filesystem support
71 * lpfc_debugfs_max_disc_trc=X Where X is the event trace depth for
72 * EACH vport. X MUST also be a power of 2.
73 * lpfc_debugfs_mask_disc_trc=Y Where Y is an event mask as defined in
77 * This is an ACSII readable file that contains a trace of the last
78 * lpfc_debugfs_max_slow_ring_trc events that happened on a specific HBA.
79 * To enable the slow ring trace, the following module parameters must be set:
80 * lpfc_debugfs_enable=1 Turns on lpfc debugfs filesystem support
81 * lpfc_debugfs_max_slow_ring_trc=X Where X is the event trace depth for
82 * the HBA. X MUST also be a power of 2.
84 static int lpfc_debugfs_enable = 1;
85 module_param(lpfc_debugfs_enable, int, S_IRUGO);
86 MODULE_PARM_DESC(lpfc_debugfs_enable, "Enable debugfs services");
88 /* This MUST be a power of 2 */
89 static int lpfc_debugfs_max_disc_trc;
90 module_param(lpfc_debugfs_max_disc_trc, int, S_IRUGO);
91 MODULE_PARM_DESC(lpfc_debugfs_max_disc_trc,
92 "Set debugfs discovery trace depth");
94 /* This MUST be a power of 2 */
95 static int lpfc_debugfs_max_slow_ring_trc;
96 module_param(lpfc_debugfs_max_slow_ring_trc, int, S_IRUGO);
97 MODULE_PARM_DESC(lpfc_debugfs_max_slow_ring_trc,
98 "Set debugfs slow ring trace depth");
100 static int lpfc_debugfs_mask_disc_trc;
101 module_param(lpfc_debugfs_mask_disc_trc, int, S_IRUGO);
102 MODULE_PARM_DESC(lpfc_debugfs_mask_disc_trc,
103 "Set debugfs discovery trace mask");
105 #include <linux/debugfs.h>
107 static atomic_t lpfc_debugfs_seq_trc_cnt = ATOMIC_INIT(0);
108 static unsigned long lpfc_debugfs_start_time = 0L;
111 static struct lpfc_idiag idiag;
114 * lpfc_debugfs_disc_trc_data - Dump discovery logging to a buffer
115 * @vport: The vport to gather the log info from.
116 * @buf: The buffer to dump log into.
117 * @size: The maximum amount of data to process.
120 * This routine gathers the lpfc discovery debugfs data from the @vport and
121 * dumps it to @buf up to @size number of bytes. It will start at the next entry
122 * in the log and process the log until the end of the buffer. Then it will
123 * gather from the beginning of the log and process until the current entry.
126 * Discovery logging will be disabled while while this routine dumps the log.
129 * This routine returns the amount of bytes that were dumped into @buf and will
133 lpfc_debugfs_disc_trc_data(struct lpfc_vport *vport, char *buf, int size)
135 int i, index, len, enable;
137 struct lpfc_debugfs_trc *dtp;
138 char buffer[LPFC_DEBUG_TRC_ENTRY_SIZE];
140 enable = lpfc_debugfs_enable;
141 lpfc_debugfs_enable = 0;
144 index = (atomic_read(&vport->disc_trc_cnt) + 1) &
145 (lpfc_debugfs_max_disc_trc - 1);
146 for (i = index; i < lpfc_debugfs_max_disc_trc; i++) {
147 dtp = vport->disc_trc + i;
150 ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
152 LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
153 dtp->seq_cnt, ms, dtp->fmt);
154 len += snprintf(buf+len, size-len, buffer,
155 dtp->data1, dtp->data2, dtp->data3);
157 for (i = 0; i < index; i++) {
158 dtp = vport->disc_trc + i;
161 ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
163 LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
164 dtp->seq_cnt, ms, dtp->fmt);
165 len += snprintf(buf+len, size-len, buffer,
166 dtp->data1, dtp->data2, dtp->data3);
169 lpfc_debugfs_enable = enable;
174 * lpfc_debugfs_slow_ring_trc_data - Dump slow ring logging to a buffer
175 * @phba: The HBA to gather the log info from.
176 * @buf: The buffer to dump log into.
177 * @size: The maximum amount of data to process.
180 * This routine gathers the lpfc slow ring debugfs data from the @phba and
181 * dumps it to @buf up to @size number of bytes. It will start at the next entry
182 * in the log and process the log until the end of the buffer. Then it will
183 * gather from the beginning of the log and process until the current entry.
186 * Slow ring logging will be disabled while while this routine dumps the log.
189 * This routine returns the amount of bytes that were dumped into @buf and will
193 lpfc_debugfs_slow_ring_trc_data(struct lpfc_hba *phba, char *buf, int size)
195 int i, index, len, enable;
197 struct lpfc_debugfs_trc *dtp;
198 char buffer[LPFC_DEBUG_TRC_ENTRY_SIZE];
201 enable = lpfc_debugfs_enable;
202 lpfc_debugfs_enable = 0;
205 index = (atomic_read(&phba->slow_ring_trc_cnt) + 1) &
206 (lpfc_debugfs_max_slow_ring_trc - 1);
207 for (i = index; i < lpfc_debugfs_max_slow_ring_trc; i++) {
208 dtp = phba->slow_ring_trc + i;
211 ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
213 LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
214 dtp->seq_cnt, ms, dtp->fmt);
215 len += snprintf(buf+len, size-len, buffer,
216 dtp->data1, dtp->data2, dtp->data3);
218 for (i = 0; i < index; i++) {
219 dtp = phba->slow_ring_trc + i;
222 ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
224 LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
225 dtp->seq_cnt, ms, dtp->fmt);
226 len += snprintf(buf+len, size-len, buffer,
227 dtp->data1, dtp->data2, dtp->data3);
230 lpfc_debugfs_enable = enable;
234 static int lpfc_debugfs_last_hbq = -1;
237 * lpfc_debugfs_hbqinfo_data - Dump host buffer queue info to a buffer
238 * @phba: The HBA to gather host buffer info from.
239 * @buf: The buffer to dump log into.
240 * @size: The maximum amount of data to process.
243 * This routine dumps the host buffer queue info from the @phba to @buf up to
244 * @size number of bytes. A header that describes the current hbq state will be
245 * dumped to @buf first and then info on each hbq entry will be dumped to @buf
246 * until @size bytes have been dumped or all the hbq info has been dumped.
249 * This routine will rotate through each configured HBQ each time called.
252 * This routine returns the amount of bytes that were dumped into @buf and will
256 lpfc_debugfs_hbqinfo_data(struct lpfc_hba *phba, char *buf, int size)
259 int cnt, i, j, found, posted, low;
260 uint32_t phys, raw_index, getidx;
261 struct lpfc_hbq_init *hip;
263 struct lpfc_hbq_entry *hbqe;
264 struct lpfc_dmabuf *d_buf;
265 struct hbq_dmabuf *hbq_buf;
267 if (phba->sli_rev != 3)
269 cnt = LPFC_HBQINFO_SIZE;
270 spin_lock_irq(&phba->hbalock);
272 /* toggle between multiple hbqs, if any */
273 i = lpfc_sli_hbq_count();
275 lpfc_debugfs_last_hbq++;
276 if (lpfc_debugfs_last_hbq >= i)
277 lpfc_debugfs_last_hbq = 0;
280 lpfc_debugfs_last_hbq = 0;
282 i = lpfc_debugfs_last_hbq;
284 len += snprintf(buf+len, size-len, "HBQ %d Info\n", i);
286 hbqs = &phba->hbqs[i];
288 list_for_each_entry(d_buf, &hbqs->hbq_buffer_list, list)
291 hip = lpfc_hbq_defs[i];
292 len += snprintf(buf+len, size-len,
293 "idx:%d prof:%d rn:%d bufcnt:%d icnt:%d acnt:%d posted %d\n",
294 hip->hbq_index, hip->profile, hip->rn,
295 hip->buffer_count, hip->init_count, hip->add_count, posted);
297 raw_index = phba->hbq_get[i];
298 getidx = le32_to_cpu(raw_index);
299 len += snprintf(buf+len, size-len,
300 "entrys:%d bufcnt:%d Put:%d nPut:%d localGet:%d hbaGet:%d\n",
301 hbqs->entry_count, hbqs->buffer_count, hbqs->hbqPutIdx,
302 hbqs->next_hbqPutIdx, hbqs->local_hbqGetIdx, getidx);
304 hbqe = (struct lpfc_hbq_entry *) phba->hbqs[i].hbq_virt;
305 for (j=0; j<hbqs->entry_count; j++) {
306 len += snprintf(buf+len, size-len,
307 "%03d: %08x %04x %05x ", j,
308 le32_to_cpu(hbqe->bde.addrLow),
309 le32_to_cpu(hbqe->bde.tus.w),
310 le32_to_cpu(hbqe->buffer_tag));
314 /* First calculate if slot has an associated posted buffer */
315 low = hbqs->hbqPutIdx - posted;
317 if ((j >= hbqs->hbqPutIdx) || (j < low)) {
318 len += snprintf(buf+len, size-len, "Unused\n");
323 if ((j >= hbqs->hbqPutIdx) &&
324 (j < (hbqs->entry_count+low))) {
325 len += snprintf(buf+len, size-len, "Unused\n");
330 /* Get the Buffer info for the posted buffer */
331 list_for_each_entry(d_buf, &hbqs->hbq_buffer_list, list) {
332 hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf);
333 phys = ((uint64_t)hbq_buf->dbuf.phys & 0xffffffff);
334 if (phys == le32_to_cpu(hbqe->bde.addrLow)) {
335 len += snprintf(buf+len, size-len,
336 "Buf%d: %p %06x\n", i,
337 hbq_buf->dbuf.virt, hbq_buf->tag);
344 len += snprintf(buf+len, size-len, "No DMAinfo?\n");
348 if (len > LPFC_HBQINFO_SIZE - 54)
351 spin_unlock_irq(&phba->hbalock);
355 static int lpfc_debugfs_last_hba_slim_off;
358 * lpfc_debugfs_dumpHBASlim_data - Dump HBA SLIM info to a buffer
359 * @phba: The HBA to gather SLIM info from.
360 * @buf: The buffer to dump log into.
361 * @size: The maximum amount of data to process.
364 * This routine dumps the current contents of HBA SLIM for the HBA associated
365 * with @phba to @buf up to @size bytes of data. This is the raw HBA SLIM data.
368 * This routine will only dump up to 1024 bytes of data each time called and
369 * should be called multiple times to dump the entire HBA SLIM.
372 * This routine returns the amount of bytes that were dumped into @buf and will
376 lpfc_debugfs_dumpHBASlim_data(struct lpfc_hba *phba, char *buf, int size)
384 spin_lock_irq(&phba->hbalock);
386 len += snprintf(buf+len, size-len, "HBA SLIM\n");
387 lpfc_memcpy_from_slim(buffer,
388 phba->MBslimaddr + lpfc_debugfs_last_hba_slim_off, 1024);
390 ptr = (uint32_t *)&buffer[0];
391 off = lpfc_debugfs_last_hba_slim_off;
393 /* Set it up for the next time */
394 lpfc_debugfs_last_hba_slim_off += 1024;
395 if (lpfc_debugfs_last_hba_slim_off >= 4096)
396 lpfc_debugfs_last_hba_slim_off = 0;
400 len += snprintf(buf+len, size-len,
401 "%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
402 off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4),
403 *(ptr+5), *(ptr+6), *(ptr+7));
405 i -= (8 * sizeof(uint32_t));
406 off += (8 * sizeof(uint32_t));
409 spin_unlock_irq(&phba->hbalock);
414 * lpfc_debugfs_dumpHostSlim_data - Dump host SLIM info to a buffer
415 * @phba: The HBA to gather Host SLIM info from.
416 * @buf: The buffer to dump log into.
417 * @size: The maximum amount of data to process.
420 * This routine dumps the current contents of host SLIM for the host associated
421 * with @phba to @buf up to @size bytes of data. The dump will contain the
422 * Mailbox, PCB, Rings, and Registers that are located in host memory.
425 * This routine returns the amount of bytes that were dumped into @buf and will
429 lpfc_debugfs_dumpHostSlim_data(struct lpfc_hba *phba, char *buf, int size)
433 uint32_t word0, word1, word2, word3;
435 struct lpfc_pgp *pgpp;
436 struct lpfc_sli *psli = &phba->sli;
437 struct lpfc_sli_ring *pring;
440 spin_lock_irq(&phba->hbalock);
442 len += snprintf(buf+len, size-len, "SLIM Mailbox\n");
443 ptr = (uint32_t *)phba->slim2p.virt;
444 i = sizeof(MAILBOX_t);
446 len += snprintf(buf+len, size-len,
447 "%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
448 off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4),
449 *(ptr+5), *(ptr+6), *(ptr+7));
451 i -= (8 * sizeof(uint32_t));
452 off += (8 * sizeof(uint32_t));
455 len += snprintf(buf+len, size-len, "SLIM PCB\n");
456 ptr = (uint32_t *)phba->pcb;
459 len += snprintf(buf+len, size-len,
460 "%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
461 off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4),
462 *(ptr+5), *(ptr+6), *(ptr+7));
464 i -= (8 * sizeof(uint32_t));
465 off += (8 * sizeof(uint32_t));
468 for (i = 0; i < 4; i++) {
469 pgpp = &phba->port_gp[i];
470 pring = &psli->ring[i];
471 len += snprintf(buf+len, size-len,
472 "Ring %d: CMD GetInx:%d (Max:%d Next:%d "
473 "Local:%d flg:x%x) RSP PutInx:%d Max:%d\n",
474 i, pgpp->cmdGetInx, pring->numCiocb,
475 pring->next_cmdidx, pring->local_getidx,
476 pring->flag, pgpp->rspPutInx, pring->numRiocb);
479 if (phba->sli_rev <= LPFC_SLI_REV3) {
480 word0 = readl(phba->HAregaddr);
481 word1 = readl(phba->CAregaddr);
482 word2 = readl(phba->HSregaddr);
483 word3 = readl(phba->HCregaddr);
484 len += snprintf(buf+len, size-len, "HA:%08x CA:%08x HS:%08x "
485 "HC:%08x\n", word0, word1, word2, word3);
487 spin_unlock_irq(&phba->hbalock);
492 * lpfc_debugfs_nodelist_data - Dump target node list to a buffer
493 * @vport: The vport to gather target node info from.
494 * @buf: The buffer to dump log into.
495 * @size: The maximum amount of data to process.
498 * This routine dumps the current target node list associated with @vport to
499 * @buf up to @size bytes of data. Each node entry in the dump will contain a
500 * node state, DID, WWPN, WWNN, RPI, flags, type, and other useful fields.
503 * This routine returns the amount of bytes that were dumped into @buf and will
507 lpfc_debugfs_nodelist_data(struct lpfc_vport *vport, char *buf, int size)
511 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
512 struct lpfc_nodelist *ndlp;
513 unsigned char *statep, *name;
515 cnt = (LPFC_NODELIST_SIZE / LPFC_NODELIST_ENTRY_SIZE);
517 spin_lock_irq(shost->host_lock);
518 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
520 len += snprintf(buf+len, size-len,
521 "Missing Nodelist Entries\n");
525 switch (ndlp->nlp_state) {
526 case NLP_STE_UNUSED_NODE:
529 case NLP_STE_PLOGI_ISSUE:
532 case NLP_STE_ADISC_ISSUE:
535 case NLP_STE_REG_LOGIN_ISSUE:
538 case NLP_STE_PRLI_ISSUE:
541 case NLP_STE_UNMAPPED_NODE:
544 case NLP_STE_MAPPED_NODE:
547 case NLP_STE_NPR_NODE:
553 len += snprintf(buf+len, size-len, "%s DID:x%06x ",
554 statep, ndlp->nlp_DID);
555 name = (unsigned char *)&ndlp->nlp_portname;
556 len += snprintf(buf+len, size-len,
557 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x ",
558 *name, *(name+1), *(name+2), *(name+3),
559 *(name+4), *(name+5), *(name+6), *(name+7));
560 name = (unsigned char *)&ndlp->nlp_nodename;
561 len += snprintf(buf+len, size-len,
562 "WWNN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x ",
563 *name, *(name+1), *(name+2), *(name+3),
564 *(name+4), *(name+5), *(name+6), *(name+7));
565 len += snprintf(buf+len, size-len, "RPI:%03d flag:x%08x ",
566 ndlp->nlp_rpi, ndlp->nlp_flag);
568 len += snprintf(buf+len, size-len, "UNKNOWN_TYPE ");
569 if (ndlp->nlp_type & NLP_FC_NODE)
570 len += snprintf(buf+len, size-len, "FC_NODE ");
571 if (ndlp->nlp_type & NLP_FABRIC)
572 len += snprintf(buf+len, size-len, "FABRIC ");
573 if (ndlp->nlp_type & NLP_FCP_TARGET)
574 len += snprintf(buf+len, size-len, "FCP_TGT sid:%d ",
576 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
577 len += snprintf(buf+len, size-len, "FCP_INITIATOR ");
578 len += snprintf(buf+len, size-len, "usgmap:%x ",
580 len += snprintf(buf+len, size-len, "refcnt:%x",
581 atomic_read(&ndlp->kref.refcount));
582 len += snprintf(buf+len, size-len, "\n");
584 spin_unlock_irq(shost->host_lock);
590 * lpfc_debugfs_disc_trc - Store discovery trace log
591 * @vport: The vport to associate this trace string with for retrieval.
592 * @mask: Log entry classification.
593 * @fmt: Format string to be displayed when dumping the log.
594 * @data1: 1st data parameter to be applied to @fmt.
595 * @data2: 2nd data parameter to be applied to @fmt.
596 * @data3: 3rd data parameter to be applied to @fmt.
599 * This routine is used by the driver code to add a debugfs log entry to the
600 * discovery trace buffer associated with @vport. Only entries with a @mask that
601 * match the current debugfs discovery mask will be saved. Entries that do not
602 * match will be thrown away. @fmt, @data1, @data2, and @data3 are used like
603 * printf when displaying the log.
606 lpfc_debugfs_disc_trc(struct lpfc_vport *vport, int mask, char *fmt,
607 uint32_t data1, uint32_t data2, uint32_t data3)
609 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
610 struct lpfc_debugfs_trc *dtp;
613 if (!(lpfc_debugfs_mask_disc_trc & mask))
616 if (!lpfc_debugfs_enable || !lpfc_debugfs_max_disc_trc ||
617 !vport || !vport->disc_trc)
620 index = atomic_inc_return(&vport->disc_trc_cnt) &
621 (lpfc_debugfs_max_disc_trc - 1);
622 dtp = vport->disc_trc + index;
627 dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt);
634 * lpfc_debugfs_slow_ring_trc - Store slow ring trace log
635 * @phba: The phba to associate this trace string with for retrieval.
636 * @fmt: Format string to be displayed when dumping the log.
637 * @data1: 1st data parameter to be applied to @fmt.
638 * @data2: 2nd data parameter to be applied to @fmt.
639 * @data3: 3rd data parameter to be applied to @fmt.
642 * This routine is used by the driver code to add a debugfs log entry to the
643 * discovery trace buffer associated with @vport. @fmt, @data1, @data2, and
644 * @data3 are used like printf when displaying the log.
647 lpfc_debugfs_slow_ring_trc(struct lpfc_hba *phba, char *fmt,
648 uint32_t data1, uint32_t data2, uint32_t data3)
650 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
651 struct lpfc_debugfs_trc *dtp;
654 if (!lpfc_debugfs_enable || !lpfc_debugfs_max_slow_ring_trc ||
655 !phba || !phba->slow_ring_trc)
658 index = atomic_inc_return(&phba->slow_ring_trc_cnt) &
659 (lpfc_debugfs_max_slow_ring_trc - 1);
660 dtp = phba->slow_ring_trc + index;
665 dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt);
671 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
673 * lpfc_debugfs_disc_trc_open - Open the discovery trace log
674 * @inode: The inode pointer that contains a vport pointer.
675 * @file: The file pointer to attach the log output.
678 * This routine is the entry point for the debugfs open file operation. It gets
679 * the vport from the i_private field in @inode, allocates the necessary buffer
680 * for the log, fills the buffer from the in-memory log for this vport, and then
681 * returns a pointer to that log in the private_data field in @file.
684 * This function returns zero if successful. On error it will return an negative
688 lpfc_debugfs_disc_trc_open(struct inode *inode, struct file *file)
690 struct lpfc_vport *vport = inode->i_private;
691 struct lpfc_debug *debug;
695 if (!lpfc_debugfs_max_disc_trc) {
700 debug = kmalloc(sizeof(*debug), GFP_KERNEL);
704 /* Round to page boundary */
705 size = (lpfc_debugfs_max_disc_trc * LPFC_DEBUG_TRC_ENTRY_SIZE);
706 size = PAGE_ALIGN(size);
708 debug->buffer = kmalloc(size, GFP_KERNEL);
709 if (!debug->buffer) {
714 debug->len = lpfc_debugfs_disc_trc_data(vport, debug->buffer, size);
715 file->private_data = debug;
723 * lpfc_debugfs_slow_ring_trc_open - Open the Slow Ring trace log
724 * @inode: The inode pointer that contains a vport pointer.
725 * @file: The file pointer to attach the log output.
728 * This routine is the entry point for the debugfs open file operation. It gets
729 * the vport from the i_private field in @inode, allocates the necessary buffer
730 * for the log, fills the buffer from the in-memory log for this vport, and then
731 * returns a pointer to that log in the private_data field in @file.
734 * This function returns zero if successful. On error it will return an negative
738 lpfc_debugfs_slow_ring_trc_open(struct inode *inode, struct file *file)
740 struct lpfc_hba *phba = inode->i_private;
741 struct lpfc_debug *debug;
745 if (!lpfc_debugfs_max_slow_ring_trc) {
750 debug = kmalloc(sizeof(*debug), GFP_KERNEL);
754 /* Round to page boundary */
755 size = (lpfc_debugfs_max_slow_ring_trc * LPFC_DEBUG_TRC_ENTRY_SIZE);
756 size = PAGE_ALIGN(size);
758 debug->buffer = kmalloc(size, GFP_KERNEL);
759 if (!debug->buffer) {
764 debug->len = lpfc_debugfs_slow_ring_trc_data(phba, debug->buffer, size);
765 file->private_data = debug;
773 * lpfc_debugfs_hbqinfo_open - Open the hbqinfo debugfs buffer
774 * @inode: The inode pointer that contains a vport pointer.
775 * @file: The file pointer to attach the log output.
778 * This routine is the entry point for the debugfs open file operation. It gets
779 * the vport from the i_private field in @inode, allocates the necessary buffer
780 * for the log, fills the buffer from the in-memory log for this vport, and then
781 * returns a pointer to that log in the private_data field in @file.
784 * This function returns zero if successful. On error it will return an negative
788 lpfc_debugfs_hbqinfo_open(struct inode *inode, struct file *file)
790 struct lpfc_hba *phba = inode->i_private;
791 struct lpfc_debug *debug;
794 debug = kmalloc(sizeof(*debug), GFP_KERNEL);
798 /* Round to page boundary */
799 debug->buffer = kmalloc(LPFC_HBQINFO_SIZE, GFP_KERNEL);
800 if (!debug->buffer) {
805 debug->len = lpfc_debugfs_hbqinfo_data(phba, debug->buffer,
807 file->private_data = debug;
815 * lpfc_debugfs_dumpHBASlim_open - Open the Dump HBA SLIM debugfs buffer
816 * @inode: The inode pointer that contains a vport pointer.
817 * @file: The file pointer to attach the log output.
820 * This routine is the entry point for the debugfs open file operation. It gets
821 * the vport from the i_private field in @inode, allocates the necessary buffer
822 * for the log, fills the buffer from the in-memory log for this vport, and then
823 * returns a pointer to that log in the private_data field in @file.
826 * This function returns zero if successful. On error it will return an negative
830 lpfc_debugfs_dumpHBASlim_open(struct inode *inode, struct file *file)
832 struct lpfc_hba *phba = inode->i_private;
833 struct lpfc_debug *debug;
836 debug = kmalloc(sizeof(*debug), GFP_KERNEL);
840 /* Round to page boundary */
841 debug->buffer = kmalloc(LPFC_DUMPHBASLIM_SIZE, GFP_KERNEL);
842 if (!debug->buffer) {
847 debug->len = lpfc_debugfs_dumpHBASlim_data(phba, debug->buffer,
848 LPFC_DUMPHBASLIM_SIZE);
849 file->private_data = debug;
857 * lpfc_debugfs_dumpHostSlim_open - Open the Dump Host SLIM debugfs buffer
858 * @inode: The inode pointer that contains a vport pointer.
859 * @file: The file pointer to attach the log output.
862 * This routine is the entry point for the debugfs open file operation. It gets
863 * the vport from the i_private field in @inode, allocates the necessary buffer
864 * for the log, fills the buffer from the in-memory log for this vport, and then
865 * returns a pointer to that log in the private_data field in @file.
868 * This function returns zero if successful. On error it will return an negative
872 lpfc_debugfs_dumpHostSlim_open(struct inode *inode, struct file *file)
874 struct lpfc_hba *phba = inode->i_private;
875 struct lpfc_debug *debug;
878 debug = kmalloc(sizeof(*debug), GFP_KERNEL);
882 /* Round to page boundary */
883 debug->buffer = kmalloc(LPFC_DUMPHOSTSLIM_SIZE, GFP_KERNEL);
884 if (!debug->buffer) {
889 debug->len = lpfc_debugfs_dumpHostSlim_data(phba, debug->buffer,
890 LPFC_DUMPHOSTSLIM_SIZE);
891 file->private_data = debug;
899 lpfc_debugfs_dumpData_open(struct inode *inode, struct file *file)
901 struct lpfc_debug *debug;
907 debug = kmalloc(sizeof(*debug), GFP_KERNEL);
911 /* Round to page boundary */
912 printk(KERN_ERR "9059 BLKGRD: %s: _dump_buf_data=0x%p\n",
913 __func__, _dump_buf_data);
914 debug->buffer = _dump_buf_data;
915 if (!debug->buffer) {
920 debug->len = (1 << _dump_buf_data_order) << PAGE_SHIFT;
921 file->private_data = debug;
929 lpfc_debugfs_dumpDif_open(struct inode *inode, struct file *file)
931 struct lpfc_debug *debug;
937 debug = kmalloc(sizeof(*debug), GFP_KERNEL);
941 /* Round to page boundary */
942 printk(KERN_ERR "9060 BLKGRD: %s: _dump_buf_dif=0x%p file=%s\n",
943 __func__, _dump_buf_dif, file->f_dentry->d_name.name);
944 debug->buffer = _dump_buf_dif;
945 if (!debug->buffer) {
950 debug->len = (1 << _dump_buf_dif_order) << PAGE_SHIFT;
951 file->private_data = debug;
959 lpfc_debugfs_dumpDataDif_write(struct file *file, const char __user *buf,
960 size_t nbytes, loff_t *ppos)
963 * The Data/DIF buffers only save one failing IO
964 * The write op is used as a reset mechanism after an IO has
965 * already been saved to the next one can be saved
967 spin_lock(&_dump_buf_lock);
969 memset((void *)_dump_buf_data, 0,
970 ((1 << PAGE_SHIFT) << _dump_buf_data_order));
971 memset((void *)_dump_buf_dif, 0,
972 ((1 << PAGE_SHIFT) << _dump_buf_dif_order));
976 spin_unlock(&_dump_buf_lock);
982 * lpfc_debugfs_nodelist_open - Open the nodelist debugfs file
983 * @inode: The inode pointer that contains a vport pointer.
984 * @file: The file pointer to attach the log output.
987 * This routine is the entry point for the debugfs open file operation. It gets
988 * the vport from the i_private field in @inode, allocates the necessary buffer
989 * for the log, fills the buffer from the in-memory log for this vport, and then
990 * returns a pointer to that log in the private_data field in @file.
993 * This function returns zero if successful. On error it will return an negative
997 lpfc_debugfs_nodelist_open(struct inode *inode, struct file *file)
999 struct lpfc_vport *vport = inode->i_private;
1000 struct lpfc_debug *debug;
1003 debug = kmalloc(sizeof(*debug), GFP_KERNEL);
1007 /* Round to page boundary */
1008 debug->buffer = kmalloc(LPFC_NODELIST_SIZE, GFP_KERNEL);
1009 if (!debug->buffer) {
1014 debug->len = lpfc_debugfs_nodelist_data(vport, debug->buffer,
1015 LPFC_NODELIST_SIZE);
1016 file->private_data = debug;
1024 * lpfc_debugfs_lseek - Seek through a debugfs file
1025 * @file: The file pointer to seek through.
1026 * @off: The offset to seek to or the amount to seek by.
1027 * @whence: Indicates how to seek.
1030 * This routine is the entry point for the debugfs lseek file operation. The
1031 * @whence parameter indicates whether @off is the offset to directly seek to,
1032 * or if it is a value to seek forward or reverse by. This function figures out
1033 * what the new offset of the debugfs file will be and assigns that value to the
1034 * f_pos field of @file.
1037 * This function returns the new offset if successful and returns a negative
1038 * error if unable to process the seek.
1041 lpfc_debugfs_lseek(struct file *file, loff_t off, int whence)
1043 struct lpfc_debug *debug;
1046 debug = file->private_data;
1053 pos = file->f_pos + off;
1056 pos = debug->len - off;
1058 return (pos < 0 || pos > debug->len) ? -EINVAL : (file->f_pos = pos);
1062 * lpfc_debugfs_read - Read a debugfs file
1063 * @file: The file pointer to read from.
1064 * @buf: The buffer to copy the data to.
1065 * @nbytes: The number of bytes to read.
1066 * @ppos: The position in the file to start reading from.
1069 * This routine reads data from from the buffer indicated in the private_data
1070 * field of @file. It will start reading at @ppos and copy up to @nbytes of
1074 * This function returns the amount of data that was read (this could be less
1075 * than @nbytes if the end of the file was reached) or a negative error value.
1078 lpfc_debugfs_read(struct file *file, char __user *buf,
1079 size_t nbytes, loff_t *ppos)
1081 struct lpfc_debug *debug = file->private_data;
1083 return simple_read_from_buffer(buf, nbytes, ppos, debug->buffer,
1088 * lpfc_debugfs_release - Release the buffer used to store debugfs file data
1089 * @inode: The inode pointer that contains a vport pointer. (unused)
1090 * @file: The file pointer that contains the buffer to release.
1093 * This routine frees the buffer that was allocated when the debugfs file was
1097 * This function returns zero.
1100 lpfc_debugfs_release(struct inode *inode, struct file *file)
1102 struct lpfc_debug *debug = file->private_data;
1104 kfree(debug->buffer);
1111 lpfc_debugfs_dumpDataDif_release(struct inode *inode, struct file *file)
1113 struct lpfc_debug *debug = file->private_data;
1115 debug->buffer = NULL;
1122 * ---------------------------------
1123 * iDiag debugfs file access methods
1124 * ---------------------------------
1126 * All access methods are through the proper SLI4 PCI function's debugfs
1129 * /sys/kernel/debug/lpfc/fn<#>/iDiag
1133 * lpfc_idiag_cmd_get - Get and parse idiag debugfs comands from user space
1134 * @buf: The pointer to the user space buffer.
1135 * @nbytes: The number of bytes in the user space buffer.
1136 * @idiag_cmd: pointer to the idiag command struct.
1138 * This routine reads data from debugfs user space buffer and parses the
1139 * buffer for getting the idiag command and arguments. The while space in
1140 * between the set of data is used as the parsing separator.
1142 * This routine returns 0 when successful, it returns proper error code
1143 * back to the user space in error conditions.
1145 static int lpfc_idiag_cmd_get(const char __user *buf, size_t nbytes,
1146 struct lpfc_idiag_cmd *idiag_cmd)
1149 char *pbuf, *step_str;
1153 /* Protect copy from user */
1154 if (!access_ok(VERIFY_READ, buf, nbytes))
1157 memset(mybuf, 0, sizeof(mybuf));
1158 memset(idiag_cmd, 0, sizeof(*idiag_cmd));
1159 bsize = min(nbytes, (sizeof(mybuf)-1));
1161 if (copy_from_user(mybuf, buf, bsize))
1164 step_str = strsep(&pbuf, "\t ");
1166 /* The opcode must present */
1170 idiag_cmd->opcode = simple_strtol(step_str, NULL, 0);
1171 if (idiag_cmd->opcode == 0)
1174 for (i = 0; i < LPFC_IDIAG_CMD_DATA_SIZE; i++) {
1175 step_str = strsep(&pbuf, "\t ");
1178 idiag_cmd->data[i] = simple_strtol(step_str, NULL, 0);
1184 * lpfc_idiag_open - idiag open debugfs
1185 * @inode: The inode pointer that contains a pointer to phba.
1186 * @file: The file pointer to attach the file operation.
1189 * This routine is the entry point for the debugfs open file operation. It
1190 * gets the reference to phba from the i_private field in @inode, it then
1191 * allocates buffer for the file operation, performs the necessary PCI config
1192 * space read into the allocated buffer according to the idiag user command
1193 * setup, and then returns a pointer to buffer in the private_data field in
1197 * This function returns zero if successful. On error it will return an
1198 * negative error value.
1201 lpfc_idiag_open(struct inode *inode, struct file *file)
1203 struct lpfc_debug *debug;
1205 debug = kmalloc(sizeof(*debug), GFP_KERNEL);
1209 debug->i_private = inode->i_private;
1210 debug->buffer = NULL;
1211 file->private_data = debug;
1217 * lpfc_idiag_release - Release idiag access file operation
1218 * @inode: The inode pointer that contains a vport pointer. (unused)
1219 * @file: The file pointer that contains the buffer to release.
1222 * This routine is the generic release routine for the idiag access file
1223 * operation, it frees the buffer that was allocated when the debugfs file
1227 * This function returns zero.
1230 lpfc_idiag_release(struct inode *inode, struct file *file)
1232 struct lpfc_debug *debug = file->private_data;
1234 /* Free the buffers to the file operation */
1235 kfree(debug->buffer);
1242 * lpfc_idiag_cmd_release - Release idiag cmd access file operation
1243 * @inode: The inode pointer that contains a vport pointer. (unused)
1244 * @file: The file pointer that contains the buffer to release.
1247 * This routine frees the buffer that was allocated when the debugfs file
1248 * was opened. It also reset the fields in the idiag command struct in the
1249 * case of command for write operation.
1252 * This function returns zero.
1255 lpfc_idiag_cmd_release(struct inode *inode, struct file *file)
1257 struct lpfc_debug *debug = file->private_data;
1259 if (debug->op == LPFC_IDIAG_OP_WR) {
1260 switch (idiag.cmd.opcode) {
1261 case LPFC_IDIAG_CMD_PCICFG_WR:
1262 case LPFC_IDIAG_CMD_PCICFG_ST:
1263 case LPFC_IDIAG_CMD_PCICFG_CL:
1264 case LPFC_IDIAG_CMD_QUEACC_WR:
1265 case LPFC_IDIAG_CMD_QUEACC_ST:
1266 case LPFC_IDIAG_CMD_QUEACC_CL:
1267 memset(&idiag, 0, sizeof(idiag));
1274 /* Free the buffers to the file operation */
1275 kfree(debug->buffer);
1282 * lpfc_idiag_pcicfg_read - idiag debugfs read pcicfg
1283 * @file: The file pointer to read from.
1284 * @buf: The buffer to copy the data to.
1285 * @nbytes: The number of bytes to read.
1286 * @ppos: The position in the file to start reading from.
1289 * This routine reads data from the @phba pci config space according to the
1290 * idiag command, and copies to user @buf. Depending on the PCI config space
1291 * read command setup, it does either a single register read of a byte
1292 * (8 bits), a word (16 bits), or a dword (32 bits) or browsing through all
1293 * registers from the 4K extended PCI config space.
1296 * This function returns the amount of data that was read (this could be less
1297 * than @nbytes if the end of the file was reached) or a negative error value.
1300 lpfc_idiag_pcicfg_read(struct file *file, char __user *buf, size_t nbytes,
1303 struct lpfc_debug *debug = file->private_data;
1304 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
1305 int offset_label, offset, len = 0, index = LPFC_PCI_CFG_RD_SIZE;
1308 struct pci_dev *pdev;
1313 pdev = phba->pcidev;
1317 /* This is a user read operation */
1318 debug->op = LPFC_IDIAG_OP_RD;
1321 debug->buffer = kmalloc(LPFC_PCI_CFG_SIZE, GFP_KERNEL);
1324 pbuffer = debug->buffer;
1329 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_RD) {
1330 where = idiag.cmd.data[0];
1331 count = idiag.cmd.data[1];
1335 /* Read single PCI config space register */
1337 case SIZE_U8: /* byte (8 bits) */
1338 pci_read_config_byte(pdev, where, &u8val);
1339 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
1340 "%03x: %02x\n", where, u8val);
1342 case SIZE_U16: /* word (16 bits) */
1343 pci_read_config_word(pdev, where, &u16val);
1344 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
1345 "%03x: %04x\n", where, u16val);
1347 case SIZE_U32: /* double word (32 bits) */
1348 pci_read_config_dword(pdev, where, &u32val);
1349 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
1350 "%03x: %08x\n", where, u32val);
1352 case LPFC_PCI_CFG_BROWSE: /* browse all */
1360 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
1364 /* Browse all PCI config space registers */
1365 offset_label = idiag.offset.last_rd;
1366 offset = offset_label;
1368 /* Read PCI config space */
1369 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
1370 "%03x: ", offset_label);
1372 pci_read_config_dword(pdev, offset, &u32val);
1373 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
1375 offset += sizeof(uint32_t);
1376 index -= sizeof(uint32_t);
1378 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
1380 else if (!(index % (8 * sizeof(uint32_t)))) {
1381 offset_label += (8 * sizeof(uint32_t));
1382 len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
1383 "\n%03x: ", offset_label);
1387 /* Set up the offset for next portion of pci cfg read */
1388 idiag.offset.last_rd += LPFC_PCI_CFG_RD_SIZE;
1389 if (idiag.offset.last_rd >= LPFC_PCI_CFG_SIZE)
1390 idiag.offset.last_rd = 0;
1392 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
1396 * lpfc_idiag_pcicfg_write - Syntax check and set up idiag pcicfg commands
1397 * @file: The file pointer to read from.
1398 * @buf: The buffer to copy the user data from.
1399 * @nbytes: The number of bytes to get.
1400 * @ppos: The position in the file to start reading from.
1402 * This routine get the debugfs idiag command struct from user space and
1403 * then perform the syntax check for PCI config space read or write command
1404 * accordingly. In the case of PCI config space read command, it sets up
1405 * the command in the idiag command struct for the debugfs read operation.
1406 * In the case of PCI config space write operation, it executes the write
1407 * operation into the PCI config space accordingly.
1409 * It returns the @nbytges passing in from debugfs user space when successful.
1410 * In case of error conditions, it returns proper error code back to the user
1414 lpfc_idiag_pcicfg_write(struct file *file, const char __user *buf,
1415 size_t nbytes, loff_t *ppos)
1417 struct lpfc_debug *debug = file->private_data;
1418 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
1419 uint32_t where, value, count;
1423 struct pci_dev *pdev;
1426 pdev = phba->pcidev;
1430 /* This is a user write operation */
1431 debug->op = LPFC_IDIAG_OP_WR;
1433 rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd);
1437 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_RD) {
1438 /* Sanity check on PCI config read command line arguments */
1439 if (rc != LPFC_PCI_CFG_RD_CMD_ARG)
1441 /* Read command from PCI config space, set up command fields */
1442 where = idiag.cmd.data[0];
1443 count = idiag.cmd.data[1];
1444 if (count == LPFC_PCI_CFG_BROWSE) {
1445 if (where % sizeof(uint32_t))
1447 /* Starting offset to browse */
1448 idiag.offset.last_rd = where;
1449 } else if ((count != sizeof(uint8_t)) &&
1450 (count != sizeof(uint16_t)) &&
1451 (count != sizeof(uint32_t)))
1453 if (count == sizeof(uint8_t)) {
1454 if (where > LPFC_PCI_CFG_SIZE - sizeof(uint8_t))
1456 if (where % sizeof(uint8_t))
1459 if (count == sizeof(uint16_t)) {
1460 if (where > LPFC_PCI_CFG_SIZE - sizeof(uint16_t))
1462 if (where % sizeof(uint16_t))
1465 if (count == sizeof(uint32_t)) {
1466 if (where > LPFC_PCI_CFG_SIZE - sizeof(uint32_t))
1468 if (where % sizeof(uint32_t))
1471 } else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR ||
1472 idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST ||
1473 idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) {
1474 /* Sanity check on PCI config write command line arguments */
1475 if (rc != LPFC_PCI_CFG_WR_CMD_ARG)
1477 /* Write command to PCI config space, read-modify-write */
1478 where = idiag.cmd.data[0];
1479 count = idiag.cmd.data[1];
1480 value = idiag.cmd.data[2];
1482 if ((count != sizeof(uint8_t)) &&
1483 (count != sizeof(uint16_t)) &&
1484 (count != sizeof(uint32_t)))
1486 if (count == sizeof(uint8_t)) {
1487 if (where > LPFC_PCI_CFG_SIZE - sizeof(uint8_t))
1489 if (where % sizeof(uint8_t))
1491 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR)
1492 pci_write_config_byte(pdev, where,
1494 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST) {
1495 rc = pci_read_config_byte(pdev, where, &u8val);
1497 u8val |= (uint8_t)value;
1498 pci_write_config_byte(pdev, where,
1502 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) {
1503 rc = pci_read_config_byte(pdev, where, &u8val);
1505 u8val &= (uint8_t)(~value);
1506 pci_write_config_byte(pdev, where,
1511 if (count == sizeof(uint16_t)) {
1512 if (where > LPFC_PCI_CFG_SIZE - sizeof(uint16_t))
1514 if (where % sizeof(uint16_t))
1516 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR)
1517 pci_write_config_word(pdev, where,
1519 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST) {
1520 rc = pci_read_config_word(pdev, where, &u16val);
1522 u16val |= (uint16_t)value;
1523 pci_write_config_word(pdev, where,
1527 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) {
1528 rc = pci_read_config_word(pdev, where, &u16val);
1530 u16val &= (uint16_t)(~value);
1531 pci_write_config_word(pdev, where,
1536 if (count == sizeof(uint32_t)) {
1537 if (where > LPFC_PCI_CFG_SIZE - sizeof(uint32_t))
1539 if (where % sizeof(uint32_t))
1541 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR)
1542 pci_write_config_dword(pdev, where, value);
1543 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST) {
1544 rc = pci_read_config_dword(pdev, where,
1548 pci_write_config_dword(pdev, where,
1552 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) {
1553 rc = pci_read_config_dword(pdev, where,
1557 pci_write_config_dword(pdev, where,
1563 /* All other opecodes are illegal for now */
1568 memset(&idiag, 0, sizeof(idiag));
1573 * lpfc_idiag_queinfo_read - idiag debugfs read queue information
1574 * @file: The file pointer to read from.
1575 * @buf: The buffer to copy the data to.
1576 * @nbytes: The number of bytes to read.
1577 * @ppos: The position in the file to start reading from.
1580 * This routine reads data from the @phba SLI4 PCI function queue information,
1581 * and copies to user @buf.
1584 * This function returns the amount of data that was read (this could be less
1585 * than @nbytes if the end of the file was reached) or a negative error value.
1588 lpfc_idiag_queinfo_read(struct file *file, char __user *buf, size_t nbytes,
1591 struct lpfc_debug *debug = file->private_data;
1592 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
1593 int len = 0, fcp_qidx;
1597 debug->buffer = kmalloc(LPFC_QUE_INFO_GET_BUF_SIZE, GFP_KERNEL);
1600 pbuffer = debug->buffer;
1605 /* Get slow-path event queue information */
1606 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
1607 "Slow-path EQ information:\n");
1608 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
1610 "QE-COUNT[%04d], QE-SIZE[%04d], "
1611 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n\n",
1612 phba->sli4_hba.sp_eq->queue_id,
1613 phba->sli4_hba.sp_eq->entry_count,
1614 phba->sli4_hba.sp_eq->entry_size,
1615 phba->sli4_hba.sp_eq->host_index,
1616 phba->sli4_hba.sp_eq->hba_index);
1618 /* Get fast-path event queue information */
1619 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
1620 "Fast-path EQ information:\n");
1621 for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_eq_count; fcp_qidx++) {
1622 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
1624 "QE-COUNT[%04d], QE-SIZE[%04d], "
1625 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n",
1626 phba->sli4_hba.fp_eq[fcp_qidx]->queue_id,
1627 phba->sli4_hba.fp_eq[fcp_qidx]->entry_count,
1628 phba->sli4_hba.fp_eq[fcp_qidx]->entry_size,
1629 phba->sli4_hba.fp_eq[fcp_qidx]->host_index,
1630 phba->sli4_hba.fp_eq[fcp_qidx]->hba_index);
1632 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n");
1634 /* Get mailbox complete queue information */
1635 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
1636 "Slow-path MBX CQ information:\n");
1637 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
1638 "Associated EQID[%02d]:\n",
1639 phba->sli4_hba.mbx_cq->assoc_qid);
1640 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
1642 "QE-COUNT[%04d], QE-SIZE[%04d], "
1643 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n\n",
1644 phba->sli4_hba.mbx_cq->queue_id,
1645 phba->sli4_hba.mbx_cq->entry_count,
1646 phba->sli4_hba.mbx_cq->entry_size,
1647 phba->sli4_hba.mbx_cq->host_index,
1648 phba->sli4_hba.mbx_cq->hba_index);
1650 /* Get slow-path complete queue information */
1651 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
1652 "Slow-path ELS CQ information:\n");
1653 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
1654 "Associated EQID[%02d]:\n",
1655 phba->sli4_hba.els_cq->assoc_qid);
1656 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
1658 "QE-COUNT[%04d], QE-SIZE[%04d], "
1659 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n\n",
1660 phba->sli4_hba.els_cq->queue_id,
1661 phba->sli4_hba.els_cq->entry_count,
1662 phba->sli4_hba.els_cq->entry_size,
1663 phba->sli4_hba.els_cq->host_index,
1664 phba->sli4_hba.els_cq->hba_index);
1666 /* Get fast-path complete queue information */
1667 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
1668 "Fast-path FCP CQ information:\n");
1671 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
1672 "Associated EQID[%02d]:\n",
1673 phba->sli4_hba.fcp_cq[fcp_qidx]->assoc_qid);
1674 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
1676 "QE-COUNT[%04d], QE-SIZE[%04d], "
1677 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n",
1678 phba->sli4_hba.fcp_cq[fcp_qidx]->queue_id,
1679 phba->sli4_hba.fcp_cq[fcp_qidx]->entry_count,
1680 phba->sli4_hba.fcp_cq[fcp_qidx]->entry_size,
1681 phba->sli4_hba.fcp_cq[fcp_qidx]->host_index,
1682 phba->sli4_hba.fcp_cq[fcp_qidx]->hba_index);
1683 } while (++fcp_qidx < phba->cfg_fcp_eq_count);
1684 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n");
1686 /* Get mailbox queue information */
1687 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
1688 "Slow-path MBX MQ information:\n");
1689 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
1690 "Associated CQID[%02d]:\n",
1691 phba->sli4_hba.mbx_wq->assoc_qid);
1692 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
1694 "QE-COUNT[%04d], QE-SIZE[%04d], "
1695 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n\n",
1696 phba->sli4_hba.mbx_wq->queue_id,
1697 phba->sli4_hba.mbx_wq->entry_count,
1698 phba->sli4_hba.mbx_wq->entry_size,
1699 phba->sli4_hba.mbx_wq->host_index,
1700 phba->sli4_hba.mbx_wq->hba_index);
1702 /* Get slow-path work queue information */
1703 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
1704 "Slow-path ELS WQ information:\n");
1705 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
1706 "Associated CQID[%02d]:\n",
1707 phba->sli4_hba.els_wq->assoc_qid);
1708 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
1710 "QE-COUNT[%04d], QE-SIZE[%04d], "
1711 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n\n",
1712 phba->sli4_hba.els_wq->queue_id,
1713 phba->sli4_hba.els_wq->entry_count,
1714 phba->sli4_hba.els_wq->entry_size,
1715 phba->sli4_hba.els_wq->host_index,
1716 phba->sli4_hba.els_wq->hba_index);
1718 /* Get fast-path work queue information */
1719 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
1720 "Fast-path FCP WQ information:\n");
1721 for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_wq_count; fcp_qidx++) {
1722 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
1723 "Associated CQID[%02d]:\n",
1724 phba->sli4_hba.fcp_wq[fcp_qidx]->assoc_qid);
1725 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
1727 "QE-COUNT[%04d], WQE-SIZE[%04d], "
1728 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n",
1729 phba->sli4_hba.fcp_wq[fcp_qidx]->queue_id,
1730 phba->sli4_hba.fcp_wq[fcp_qidx]->entry_count,
1731 phba->sli4_hba.fcp_wq[fcp_qidx]->entry_size,
1732 phba->sli4_hba.fcp_wq[fcp_qidx]->host_index,
1733 phba->sli4_hba.fcp_wq[fcp_qidx]->hba_index);
1735 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n");
1737 /* Get receive queue information */
1738 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
1739 "Slow-path RQ information:\n");
1740 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
1741 "Associated CQID[%02d]:\n",
1742 phba->sli4_hba.hdr_rq->assoc_qid);
1743 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
1745 "QE-COUNT[%04d], QE-SIZE[%04d], "
1746 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n",
1747 phba->sli4_hba.hdr_rq->queue_id,
1748 phba->sli4_hba.hdr_rq->entry_count,
1749 phba->sli4_hba.hdr_rq->entry_size,
1750 phba->sli4_hba.hdr_rq->host_index,
1751 phba->sli4_hba.hdr_rq->hba_index);
1752 len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
1754 "QE-COUNT[%04d], QE-SIZE[%04d], "
1755 "HOST-INDEX[%04d], PORT-INDEX[%04d]\n",
1756 phba->sli4_hba.dat_rq->queue_id,
1757 phba->sli4_hba.dat_rq->entry_count,
1758 phba->sli4_hba.dat_rq->entry_size,
1759 phba->sli4_hba.dat_rq->host_index,
1760 phba->sli4_hba.dat_rq->hba_index);
1762 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
1766 * lpfc_idiag_que_param_check - queue access command parameter sanity check
1767 * @q: The pointer to queue structure.
1768 * @index: The index into a queue entry.
1769 * @count: The number of queue entries to access.
1772 * The routine performs sanity check on device queue access method commands.
1775 * This function returns -EINVAL when fails the sanity check, otherwise, it
1779 lpfc_idiag_que_param_check(struct lpfc_queue *q, int index, int count)
1781 /* Only support single entry read or browsing */
1782 if ((count != 1) && (count != LPFC_QUE_ACC_BROWSE))
1784 if (index > q->entry_count - 1)
1790 * lpfc_idiag_queacc_read_qe - read a single entry from the given queue index
1791 * @pbuffer: The pointer to buffer to copy the read data into.
1792 * @pque: The pointer to the queue to be read.
1793 * @index: The index into the queue entry.
1796 * This routine reads out a single entry from the given queue's index location
1797 * and copies it into the buffer provided.
1800 * This function returns 0 when it fails, otherwise, it returns the length of
1801 * the data read into the buffer provided.
1804 lpfc_idiag_queacc_read_qe(char *pbuffer, int len, struct lpfc_queue *pque,
1810 if (!pbuffer || !pque)
1813 esize = pque->entry_size;
1814 len += snprintf(pbuffer+len, LPFC_QUE_ACC_BUF_SIZE-len,
1815 "QE-INDEX[%04d]:\n", index);
1818 pentry = pque->qe[index].address;
1820 len += snprintf(pbuffer+len, LPFC_QUE_ACC_BUF_SIZE-len,
1823 offset += sizeof(uint32_t);
1824 esize -= sizeof(uint32_t);
1825 if (esize > 0 && !(offset % (4 * sizeof(uint32_t))))
1826 len += snprintf(pbuffer+len,
1827 LPFC_QUE_ACC_BUF_SIZE-len, "\n");
1829 len += snprintf(pbuffer+len, LPFC_QUE_ACC_BUF_SIZE-len, "\n");
1835 * lpfc_idiag_queacc_read - idiag debugfs read port queue
1836 * @file: The file pointer to read from.
1837 * @buf: The buffer to copy the data to.
1838 * @nbytes: The number of bytes to read.
1839 * @ppos: The position in the file to start reading from.
1842 * This routine reads data from the @phba device queue memory according to the
1843 * idiag command, and copies to user @buf. Depending on the queue dump read
1844 * command setup, it does either a single queue entry read or browing through
1845 * all entries of the queue.
1848 * This function returns the amount of data that was read (this could be less
1849 * than @nbytes if the end of the file was reached) or a negative error value.
1852 lpfc_idiag_queacc_read(struct file *file, char __user *buf, size_t nbytes,
1855 struct lpfc_debug *debug = file->private_data;
1856 uint32_t last_index, index, count;
1857 struct lpfc_queue *pque = NULL;
1861 /* This is a user read operation */
1862 debug->op = LPFC_IDIAG_OP_RD;
1865 debug->buffer = kmalloc(LPFC_QUE_ACC_BUF_SIZE, GFP_KERNEL);
1868 pbuffer = debug->buffer;
1873 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_RD) {
1874 index = idiag.cmd.data[2];
1875 count = idiag.cmd.data[3];
1876 pque = (struct lpfc_queue *)idiag.ptr_private;
1880 /* Browse the queue starting from index */
1881 if (count == LPFC_QUE_ACC_BROWSE)
1884 /* Read a single entry from the queue */
1885 len = lpfc_idiag_queacc_read_qe(pbuffer, len, pque, index);
1887 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
1891 /* Browse all entries from the queue */
1892 last_index = idiag.offset.last_rd;
1895 while (len < LPFC_QUE_ACC_SIZE - pque->entry_size) {
1896 len = lpfc_idiag_queacc_read_qe(pbuffer, len, pque, index);
1898 if (index > pque->entry_count - 1)
1902 /* Set up the offset for next portion of pci cfg read */
1903 if (index > pque->entry_count - 1)
1905 idiag.offset.last_rd = index;
1907 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
1911 * lpfc_idiag_queacc_write - Syntax check and set up idiag queacc commands
1912 * @file: The file pointer to read from.
1913 * @buf: The buffer to copy the user data from.
1914 * @nbytes: The number of bytes to get.
1915 * @ppos: The position in the file to start reading from.
1917 * This routine get the debugfs idiag command struct from user space and then
1918 * perform the syntax check for port queue read (dump) or write (set) command
1919 * accordingly. In the case of port queue read command, it sets up the command
1920 * in the idiag command struct for the following debugfs read operation. In
1921 * the case of port queue write operation, it executes the write operation
1922 * into the port queue entry accordingly.
1924 * It returns the @nbytges passing in from debugfs user space when successful.
1925 * In case of error conditions, it returns proper error code back to the user
1929 lpfc_idiag_queacc_write(struct file *file, const char __user *buf,
1930 size_t nbytes, loff_t *ppos)
1932 struct lpfc_debug *debug = file->private_data;
1933 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
1934 uint32_t qidx, quetp, queid, index, count, offset, value;
1936 struct lpfc_queue *pque;
1939 /* This is a user write operation */
1940 debug->op = LPFC_IDIAG_OP_WR;
1942 rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd);
1946 /* Get and sanity check on command feilds */
1947 quetp = idiag.cmd.data[0];
1948 queid = idiag.cmd.data[1];
1949 index = idiag.cmd.data[2];
1950 count = idiag.cmd.data[3];
1951 offset = idiag.cmd.data[4];
1952 value = idiag.cmd.data[5];
1954 /* Sanity check on command line arguments */
1955 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_WR ||
1956 idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_ST ||
1957 idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_CL) {
1958 if (rc != LPFC_QUE_ACC_WR_CMD_ARG)
1962 } else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_RD) {
1963 if (rc != LPFC_QUE_ACC_RD_CMD_ARG)
1970 /* Slow-path event queue */
1971 if (phba->sli4_hba.sp_eq->queue_id == queid) {
1973 rc = lpfc_idiag_que_param_check(
1974 phba->sli4_hba.sp_eq, index, count);
1977 idiag.ptr_private = phba->sli4_hba.sp_eq;
1980 /* Fast-path event queue */
1981 for (qidx = 0; qidx < phba->cfg_fcp_eq_count; qidx++) {
1982 if (phba->sli4_hba.fp_eq[qidx]->queue_id == queid) {
1984 rc = lpfc_idiag_que_param_check(
1985 phba->sli4_hba.fp_eq[qidx],
1989 idiag.ptr_private = phba->sli4_hba.fp_eq[qidx];
1996 /* MBX complete queue */
1997 if (phba->sli4_hba.mbx_cq->queue_id == queid) {
1999 rc = lpfc_idiag_que_param_check(
2000 phba->sli4_hba.mbx_cq, index, count);
2003 idiag.ptr_private = phba->sli4_hba.mbx_cq;
2006 /* ELS complete queue */
2007 if (phba->sli4_hba.els_cq->queue_id == queid) {
2009 rc = lpfc_idiag_que_param_check(
2010 phba->sli4_hba.els_cq, index, count);
2013 idiag.ptr_private = phba->sli4_hba.els_cq;
2016 /* FCP complete queue */
2019 if (phba->sli4_hba.fcp_cq[qidx]->queue_id == queid) {
2021 rc = lpfc_idiag_que_param_check(
2022 phba->sli4_hba.fcp_cq[qidx],
2027 phba->sli4_hba.fcp_cq[qidx];
2030 } while (++qidx < phba->cfg_fcp_eq_count);
2034 /* MBX work queue */
2035 if (phba->sli4_hba.mbx_wq->queue_id == queid) {
2037 rc = lpfc_idiag_que_param_check(
2038 phba->sli4_hba.mbx_wq, index, count);
2041 idiag.ptr_private = phba->sli4_hba.mbx_wq;
2046 /* ELS work queue */
2047 if (phba->sli4_hba.els_wq->queue_id == queid) {
2049 rc = lpfc_idiag_que_param_check(
2050 phba->sli4_hba.els_wq, index, count);
2053 idiag.ptr_private = phba->sli4_hba.els_wq;
2056 /* FCP work queue */
2057 for (qidx = 0; qidx < phba->cfg_fcp_wq_count; qidx++) {
2058 if (phba->sli4_hba.fcp_wq[qidx]->queue_id == queid) {
2060 rc = lpfc_idiag_que_param_check(
2061 phba->sli4_hba.fcp_wq[qidx],
2066 phba->sli4_hba.fcp_wq[qidx];
2074 if (phba->sli4_hba.hdr_rq->queue_id == queid) {
2076 rc = lpfc_idiag_que_param_check(
2077 phba->sli4_hba.hdr_rq, index, count);
2080 idiag.ptr_private = phba->sli4_hba.hdr_rq;
2084 if (phba->sli4_hba.dat_rq->queue_id == queid) {
2086 rc = lpfc_idiag_que_param_check(
2087 phba->sli4_hba.dat_rq, index, count);
2090 idiag.ptr_private = phba->sli4_hba.dat_rq;
2102 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_RD) {
2103 if (count == LPFC_QUE_ACC_BROWSE)
2104 idiag.offset.last_rd = index;
2107 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_WR ||
2108 idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_ST ||
2109 idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_CL) {
2110 /* Additional sanity checks on write operation */
2111 pque = (struct lpfc_queue *)idiag.ptr_private;
2112 if (offset > pque->entry_size/sizeof(uint32_t) - 1)
2114 pentry = pque->qe[index].address;
2116 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_WR)
2118 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_ST)
2120 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_CL)
2126 /* Clean out command structure on command error out */
2127 memset(&idiag, 0, sizeof(idiag));
2132 * lpfc_idiag_drbacc_read_reg - idiag debugfs read a doorbell register
2133 * @phba: The pointer to hba structure.
2134 * @pbuffer: The pointer to the buffer to copy the data to.
2135 * @len: The lenght of bytes to copied.
2136 * @drbregid: The id to doorbell registers.
2139 * This routine reads a doorbell register and copies its content to the
2140 * user buffer pointed to by @pbuffer.
2143 * This function returns the amount of data that was copied into @pbuffer.
2146 lpfc_idiag_drbacc_read_reg(struct lpfc_hba *phba, char *pbuffer,
2147 int len, uint32_t drbregid)
2155 len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len,
2156 "EQCQ-DRB-REG: 0x%08x\n",
2157 readl(phba->sli4_hba.EQCQDBregaddr));
2160 len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len,
2161 "MQ-DRB-REG: 0x%08x\n",
2162 readl(phba->sli4_hba.MQDBregaddr));
2165 len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len,
2166 "WQ-DRB-REG: 0x%08x\n",
2167 readl(phba->sli4_hba.WQDBregaddr));
2170 len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len,
2171 "RQ-DRB-REG: 0x%08x\n",
2172 readl(phba->sli4_hba.RQDBregaddr));
2182 * lpfc_idiag_drbacc_read - idiag debugfs read port doorbell
2183 * @file: The file pointer to read from.
2184 * @buf: The buffer to copy the data to.
2185 * @nbytes: The number of bytes to read.
2186 * @ppos: The position in the file to start reading from.
2189 * This routine reads data from the @phba device doorbell register according
2190 * to the idiag command, and copies to user @buf. Depending on the doorbell
2191 * register read command setup, it does either a single doorbell register
2192 * read or dump all doorbell registers.
2195 * This function returns the amount of data that was read (this could be less
2196 * than @nbytes if the end of the file was reached) or a negative error value.
2199 lpfc_idiag_drbacc_read(struct file *file, char __user *buf, size_t nbytes,
2202 struct lpfc_debug *debug = file->private_data;
2203 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
2204 uint32_t drb_reg_id, i;
2208 /* This is a user read operation */
2209 debug->op = LPFC_IDIAG_OP_RD;
2212 debug->buffer = kmalloc(LPFC_DRB_ACC_BUF_SIZE, GFP_KERNEL);
2215 pbuffer = debug->buffer;
2220 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_RD)
2221 drb_reg_id = idiag.cmd.data[0];
2225 if (drb_reg_id == LPFC_DRB_ACC_ALL)
2226 for (i = 1; i <= LPFC_DRB_MAX; i++)
2227 len = lpfc_idiag_drbacc_read_reg(phba,
2230 len = lpfc_idiag_drbacc_read_reg(phba,
2231 pbuffer, len, drb_reg_id);
2233 return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
2237 * lpfc_idiag_drbacc_write - Syntax check and set up idiag drbacc commands
2238 * @file: The file pointer to read from.
2239 * @buf: The buffer to copy the user data from.
2240 * @nbytes: The number of bytes to get.
2241 * @ppos: The position in the file to start reading from.
2243 * This routine get the debugfs idiag command struct from user space and then
2244 * perform the syntax check for port doorbell register read (dump) or write
2245 * (set) command accordingly. In the case of port queue read command, it sets
2246 * up the command in the idiag command struct for the following debugfs read
2247 * operation. In the case of port doorbell register write operation, it
2248 * executes the write operation into the port doorbell register accordingly.
2250 * It returns the @nbytges passing in from debugfs user space when successful.
2251 * In case of error conditions, it returns proper error code back to the user
2255 lpfc_idiag_drbacc_write(struct file *file, const char __user *buf,
2256 size_t nbytes, loff_t *ppos)
2258 struct lpfc_debug *debug = file->private_data;
2259 struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
2260 uint32_t drb_reg_id, value, reg_val;
2261 void __iomem *drb_reg;
2264 /* This is a user write operation */
2265 debug->op = LPFC_IDIAG_OP_WR;
2267 rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd);
2271 /* Sanity check on command line arguments */
2272 drb_reg_id = idiag.cmd.data[0];
2273 value = idiag.cmd.data[1];
2275 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_WR ||
2276 idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_ST ||
2277 idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_CL) {
2278 if (rc != LPFC_DRB_ACC_WR_CMD_ARG)
2280 if (drb_reg_id > LPFC_DRB_MAX)
2282 } else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_RD) {
2283 if (rc != LPFC_DRB_ACC_RD_CMD_ARG)
2285 if ((drb_reg_id > LPFC_DRB_MAX) &&
2286 (drb_reg_id != LPFC_DRB_ACC_ALL))
2291 /* Perform the write access operation */
2292 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_WR ||
2293 idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_ST ||
2294 idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_CL) {
2295 switch (drb_reg_id) {
2297 drb_reg = phba->sli4_hba.EQCQDBregaddr;
2300 drb_reg = phba->sli4_hba.MQDBregaddr;
2303 drb_reg = phba->sli4_hba.WQDBregaddr;
2306 drb_reg = phba->sli4_hba.RQDBregaddr;
2312 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_WR)
2314 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_ST) {
2315 reg_val = readl(drb_reg);
2318 if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_CL) {
2319 reg_val = readl(drb_reg);
2322 writel(reg_val, drb_reg);
2323 readl(drb_reg); /* flush */
2328 /* Clean out command structure on command error out */
2329 memset(&idiag, 0, sizeof(idiag));
2333 #undef lpfc_debugfs_op_disc_trc
2334 static const struct file_operations lpfc_debugfs_op_disc_trc = {
2335 .owner = THIS_MODULE,
2336 .open = lpfc_debugfs_disc_trc_open,
2337 .llseek = lpfc_debugfs_lseek,
2338 .read = lpfc_debugfs_read,
2339 .release = lpfc_debugfs_release,
2342 #undef lpfc_debugfs_op_nodelist
2343 static const struct file_operations lpfc_debugfs_op_nodelist = {
2344 .owner = THIS_MODULE,
2345 .open = lpfc_debugfs_nodelist_open,
2346 .llseek = lpfc_debugfs_lseek,
2347 .read = lpfc_debugfs_read,
2348 .release = lpfc_debugfs_release,
2351 #undef lpfc_debugfs_op_hbqinfo
2352 static const struct file_operations lpfc_debugfs_op_hbqinfo = {
2353 .owner = THIS_MODULE,
2354 .open = lpfc_debugfs_hbqinfo_open,
2355 .llseek = lpfc_debugfs_lseek,
2356 .read = lpfc_debugfs_read,
2357 .release = lpfc_debugfs_release,
2360 #undef lpfc_debugfs_op_dumpHBASlim
2361 static const struct file_operations lpfc_debugfs_op_dumpHBASlim = {
2362 .owner = THIS_MODULE,
2363 .open = lpfc_debugfs_dumpHBASlim_open,
2364 .llseek = lpfc_debugfs_lseek,
2365 .read = lpfc_debugfs_read,
2366 .release = lpfc_debugfs_release,
2369 #undef lpfc_debugfs_op_dumpHostSlim
2370 static const struct file_operations lpfc_debugfs_op_dumpHostSlim = {
2371 .owner = THIS_MODULE,
2372 .open = lpfc_debugfs_dumpHostSlim_open,
2373 .llseek = lpfc_debugfs_lseek,
2374 .read = lpfc_debugfs_read,
2375 .release = lpfc_debugfs_release,
2378 #undef lpfc_debugfs_op_dumpData
2379 static const struct file_operations lpfc_debugfs_op_dumpData = {
2380 .owner = THIS_MODULE,
2381 .open = lpfc_debugfs_dumpData_open,
2382 .llseek = lpfc_debugfs_lseek,
2383 .read = lpfc_debugfs_read,
2384 .write = lpfc_debugfs_dumpDataDif_write,
2385 .release = lpfc_debugfs_dumpDataDif_release,
2388 #undef lpfc_debugfs_op_dumpDif
2389 static const struct file_operations lpfc_debugfs_op_dumpDif = {
2390 .owner = THIS_MODULE,
2391 .open = lpfc_debugfs_dumpDif_open,
2392 .llseek = lpfc_debugfs_lseek,
2393 .read = lpfc_debugfs_read,
2394 .write = lpfc_debugfs_dumpDataDif_write,
2395 .release = lpfc_debugfs_dumpDataDif_release,
2398 #undef lpfc_debugfs_op_slow_ring_trc
2399 static const struct file_operations lpfc_debugfs_op_slow_ring_trc = {
2400 .owner = THIS_MODULE,
2401 .open = lpfc_debugfs_slow_ring_trc_open,
2402 .llseek = lpfc_debugfs_lseek,
2403 .read = lpfc_debugfs_read,
2404 .release = lpfc_debugfs_release,
2407 static struct dentry *lpfc_debugfs_root = NULL;
2408 static atomic_t lpfc_debugfs_hba_count;
2411 * File operations for the iDiag debugfs
2413 #undef lpfc_idiag_op_pciCfg
2414 static const struct file_operations lpfc_idiag_op_pciCfg = {
2415 .owner = THIS_MODULE,
2416 .open = lpfc_idiag_open,
2417 .llseek = lpfc_debugfs_lseek,
2418 .read = lpfc_idiag_pcicfg_read,
2419 .write = lpfc_idiag_pcicfg_write,
2420 .release = lpfc_idiag_cmd_release,
2423 #undef lpfc_idiag_op_queInfo
2424 static const struct file_operations lpfc_idiag_op_queInfo = {
2425 .owner = THIS_MODULE,
2426 .open = lpfc_idiag_open,
2427 .read = lpfc_idiag_queinfo_read,
2428 .release = lpfc_idiag_release,
2431 #undef lpfc_idiag_op_queacc
2432 static const struct file_operations lpfc_idiag_op_queAcc = {
2433 .owner = THIS_MODULE,
2434 .open = lpfc_idiag_open,
2435 .llseek = lpfc_debugfs_lseek,
2436 .read = lpfc_idiag_queacc_read,
2437 .write = lpfc_idiag_queacc_write,
2438 .release = lpfc_idiag_cmd_release,
2441 #undef lpfc_idiag_op_drbacc
2442 static const struct file_operations lpfc_idiag_op_drbAcc = {
2443 .owner = THIS_MODULE,
2444 .open = lpfc_idiag_open,
2445 .llseek = lpfc_debugfs_lseek,
2446 .read = lpfc_idiag_drbacc_read,
2447 .write = lpfc_idiag_drbacc_write,
2448 .release = lpfc_idiag_cmd_release,
2454 * lpfc_debugfs_initialize - Initialize debugfs for a vport
2455 * @vport: The vport pointer to initialize.
2458 * When Debugfs is configured this routine sets up the lpfc debugfs file system.
2459 * If not already created, this routine will create the lpfc directory, and
2460 * lpfcX directory (for this HBA), and vportX directory for this vport. It will
2461 * also create each file used to access lpfc specific debugfs information.
2464 lpfc_debugfs_initialize(struct lpfc_vport *vport)
2466 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
2467 struct lpfc_hba *phba = vport->phba;
2471 if (!lpfc_debugfs_enable)
2474 /* Setup lpfc root directory */
2475 if (!lpfc_debugfs_root) {
2476 lpfc_debugfs_root = debugfs_create_dir("lpfc", NULL);
2477 atomic_set(&lpfc_debugfs_hba_count, 0);
2478 if (!lpfc_debugfs_root) {
2479 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
2480 "0408 Cannot create debugfs root\n");
2484 if (!lpfc_debugfs_start_time)
2485 lpfc_debugfs_start_time = jiffies;
2487 /* Setup funcX directory for specific HBA PCI function */
2488 snprintf(name, sizeof(name), "fn%d", phba->brd_no);
2489 if (!phba->hba_debugfs_root) {
2490 phba->hba_debugfs_root =
2491 debugfs_create_dir(name, lpfc_debugfs_root);
2492 if (!phba->hba_debugfs_root) {
2493 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
2494 "0412 Cannot create debugfs hba\n");
2497 atomic_inc(&lpfc_debugfs_hba_count);
2498 atomic_set(&phba->debugfs_vport_count, 0);
2501 snprintf(name, sizeof(name), "hbqinfo");
2502 phba->debug_hbqinfo =
2503 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
2504 phba->hba_debugfs_root,
2505 phba, &lpfc_debugfs_op_hbqinfo);
2506 if (!phba->debug_hbqinfo) {
2507 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
2508 "0411 Cannot create debugfs hbqinfo\n");
2512 /* Setup dumpHBASlim */
2513 if (phba->sli_rev < LPFC_SLI_REV4) {
2514 snprintf(name, sizeof(name), "dumpHBASlim");
2515 phba->debug_dumpHBASlim =
2516 debugfs_create_file(name,
2517 S_IFREG|S_IRUGO|S_IWUSR,
2518 phba->hba_debugfs_root,
2519 phba, &lpfc_debugfs_op_dumpHBASlim);
2520 if (!phba->debug_dumpHBASlim) {
2521 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
2522 "0413 Cannot create debugfs "
2527 phba->debug_dumpHBASlim = NULL;
2529 /* Setup dumpHostSlim */
2530 if (phba->sli_rev < LPFC_SLI_REV4) {
2531 snprintf(name, sizeof(name), "dumpHostSlim");
2532 phba->debug_dumpHostSlim =
2533 debugfs_create_file(name,
2534 S_IFREG|S_IRUGO|S_IWUSR,
2535 phba->hba_debugfs_root,
2536 phba, &lpfc_debugfs_op_dumpHostSlim);
2537 if (!phba->debug_dumpHostSlim) {
2538 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
2539 "0414 Cannot create debugfs "
2544 phba->debug_dumpHBASlim = NULL;
2546 /* Setup dumpData */
2547 snprintf(name, sizeof(name), "dumpData");
2548 phba->debug_dumpData =
2549 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
2550 phba->hba_debugfs_root,
2551 phba, &lpfc_debugfs_op_dumpData);
2552 if (!phba->debug_dumpData) {
2553 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
2554 "0800 Cannot create debugfs dumpData\n");
2559 snprintf(name, sizeof(name), "dumpDif");
2560 phba->debug_dumpDif =
2561 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
2562 phba->hba_debugfs_root,
2563 phba, &lpfc_debugfs_op_dumpDif);
2564 if (!phba->debug_dumpDif) {
2565 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
2566 "0801 Cannot create debugfs dumpDif\n");
2570 /* Setup slow ring trace */
2571 if (lpfc_debugfs_max_slow_ring_trc) {
2572 num = lpfc_debugfs_max_slow_ring_trc - 1;
2573 if (num & lpfc_debugfs_max_slow_ring_trc) {
2574 /* Change to be a power of 2 */
2575 num = lpfc_debugfs_max_slow_ring_trc;
2581 lpfc_debugfs_max_slow_ring_trc = (1 << i);
2583 "lpfc_debugfs_max_disc_trc changed to "
2584 "%d\n", lpfc_debugfs_max_disc_trc);
2588 snprintf(name, sizeof(name), "slow_ring_trace");
2589 phba->debug_slow_ring_trc =
2590 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
2591 phba->hba_debugfs_root,
2592 phba, &lpfc_debugfs_op_slow_ring_trc);
2593 if (!phba->debug_slow_ring_trc) {
2594 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
2595 "0415 Cannot create debugfs "
2596 "slow_ring_trace\n");
2599 if (!phba->slow_ring_trc) {
2600 phba->slow_ring_trc = kmalloc(
2601 (sizeof(struct lpfc_debugfs_trc) *
2602 lpfc_debugfs_max_slow_ring_trc),
2604 if (!phba->slow_ring_trc) {
2605 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
2606 "0416 Cannot create debugfs "
2607 "slow_ring buffer\n");
2610 atomic_set(&phba->slow_ring_trc_cnt, 0);
2611 memset(phba->slow_ring_trc, 0,
2612 (sizeof(struct lpfc_debugfs_trc) *
2613 lpfc_debugfs_max_slow_ring_trc));
2617 snprintf(name, sizeof(name), "vport%d", vport->vpi);
2618 if (!vport->vport_debugfs_root) {
2619 vport->vport_debugfs_root =
2620 debugfs_create_dir(name, phba->hba_debugfs_root);
2621 if (!vport->vport_debugfs_root) {
2622 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
2623 "0417 Can't create debugfs\n");
2626 atomic_inc(&phba->debugfs_vport_count);
2629 if (lpfc_debugfs_max_disc_trc) {
2630 num = lpfc_debugfs_max_disc_trc - 1;
2631 if (num & lpfc_debugfs_max_disc_trc) {
2632 /* Change to be a power of 2 */
2633 num = lpfc_debugfs_max_disc_trc;
2639 lpfc_debugfs_max_disc_trc = (1 << i);
2641 "lpfc_debugfs_max_disc_trc changed to %d\n",
2642 lpfc_debugfs_max_disc_trc);
2646 vport->disc_trc = kzalloc(
2647 (sizeof(struct lpfc_debugfs_trc) * lpfc_debugfs_max_disc_trc),
2650 if (!vport->disc_trc) {
2651 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
2652 "0418 Cannot create debugfs disc trace "
2656 atomic_set(&vport->disc_trc_cnt, 0);
2658 snprintf(name, sizeof(name), "discovery_trace");
2659 vport->debug_disc_trc =
2660 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
2661 vport->vport_debugfs_root,
2662 vport, &lpfc_debugfs_op_disc_trc);
2663 if (!vport->debug_disc_trc) {
2664 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
2665 "0419 Cannot create debugfs "
2666 "discovery_trace\n");
2669 snprintf(name, sizeof(name), "nodelist");
2670 vport->debug_nodelist =
2671 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
2672 vport->vport_debugfs_root,
2673 vport, &lpfc_debugfs_op_nodelist);
2674 if (!vport->debug_nodelist) {
2675 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
2676 "0409 Can't create debugfs nodelist\n");
2681 * iDiag debugfs root entry points for SLI4 device only
2683 if (phba->sli_rev < LPFC_SLI_REV4)
2686 snprintf(name, sizeof(name), "iDiag");
2687 if (!phba->idiag_root) {
2689 debugfs_create_dir(name, phba->hba_debugfs_root);
2690 if (!phba->idiag_root) {
2691 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
2692 "2922 Can't create idiag debugfs\n");
2695 /* Initialize iDiag data structure */
2696 memset(&idiag, 0, sizeof(idiag));
2699 /* iDiag read PCI config space */
2700 snprintf(name, sizeof(name), "pciCfg");
2701 if (!phba->idiag_pci_cfg) {
2702 phba->idiag_pci_cfg =
2703 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
2704 phba->idiag_root, phba, &lpfc_idiag_op_pciCfg);
2705 if (!phba->idiag_pci_cfg) {
2706 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
2707 "2923 Can't create idiag debugfs\n");
2710 idiag.offset.last_rd = 0;
2713 /* iDiag get PCI function queue information */
2714 snprintf(name, sizeof(name), "queInfo");
2715 if (!phba->idiag_que_info) {
2716 phba->idiag_que_info =
2717 debugfs_create_file(name, S_IFREG|S_IRUGO,
2718 phba->idiag_root, phba, &lpfc_idiag_op_queInfo);
2719 if (!phba->idiag_que_info) {
2720 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
2721 "2924 Can't create idiag debugfs\n");
2726 /* iDiag access PCI function queue */
2727 snprintf(name, sizeof(name), "queAcc");
2728 if (!phba->idiag_que_acc) {
2729 phba->idiag_que_acc =
2730 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
2731 phba->idiag_root, phba, &lpfc_idiag_op_queAcc);
2732 if (!phba->idiag_que_acc) {
2733 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
2734 "2926 Can't create idiag debugfs\n");
2739 /* iDiag access PCI function doorbell registers */
2740 snprintf(name, sizeof(name), "drbAcc");
2741 if (!phba->idiag_drb_acc) {
2742 phba->idiag_drb_acc =
2743 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
2744 phba->idiag_root, phba, &lpfc_idiag_op_drbAcc);
2745 if (!phba->idiag_drb_acc) {
2746 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
2747 "2927 Can't create idiag debugfs\n");
2758 * lpfc_debugfs_terminate - Tear down debugfs infrastructure for this vport
2759 * @vport: The vport pointer to remove from debugfs.
2762 * When Debugfs is configured this routine removes debugfs file system elements
2763 * that are specific to this vport. It also checks to see if there are any
2764 * users left for the debugfs directories associated with the HBA and driver. If
2765 * this is the last user of the HBA directory or driver directory then it will
2766 * remove those from the debugfs infrastructure as well.
2769 lpfc_debugfs_terminate(struct lpfc_vport *vport)
2771 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
2772 struct lpfc_hba *phba = vport->phba;
2774 if (vport->disc_trc) {
2775 kfree(vport->disc_trc);
2776 vport->disc_trc = NULL;
2778 if (vport->debug_disc_trc) {
2779 debugfs_remove(vport->debug_disc_trc); /* discovery_trace */
2780 vport->debug_disc_trc = NULL;
2782 if (vport->debug_nodelist) {
2783 debugfs_remove(vport->debug_nodelist); /* nodelist */
2784 vport->debug_nodelist = NULL;
2787 if (vport->vport_debugfs_root) {
2788 debugfs_remove(vport->vport_debugfs_root); /* vportX */
2789 vport->vport_debugfs_root = NULL;
2790 atomic_dec(&phba->debugfs_vport_count);
2792 if (atomic_read(&phba->debugfs_vport_count) == 0) {
2794 if (phba->debug_hbqinfo) {
2795 debugfs_remove(phba->debug_hbqinfo); /* hbqinfo */
2796 phba->debug_hbqinfo = NULL;
2798 if (phba->debug_dumpHBASlim) {
2799 debugfs_remove(phba->debug_dumpHBASlim); /* HBASlim */
2800 phba->debug_dumpHBASlim = NULL;
2802 if (phba->debug_dumpHostSlim) {
2803 debugfs_remove(phba->debug_dumpHostSlim); /* HostSlim */
2804 phba->debug_dumpHostSlim = NULL;
2806 if (phba->debug_dumpData) {
2807 debugfs_remove(phba->debug_dumpData); /* dumpData */
2808 phba->debug_dumpData = NULL;
2811 if (phba->debug_dumpDif) {
2812 debugfs_remove(phba->debug_dumpDif); /* dumpDif */
2813 phba->debug_dumpDif = NULL;
2816 if (phba->slow_ring_trc) {
2817 kfree(phba->slow_ring_trc);
2818 phba->slow_ring_trc = NULL;
2820 if (phba->debug_slow_ring_trc) {
2821 /* slow_ring_trace */
2822 debugfs_remove(phba->debug_slow_ring_trc);
2823 phba->debug_slow_ring_trc = NULL;
2829 if (phba->sli_rev == LPFC_SLI_REV4) {
2830 if (phba->idiag_drb_acc) {
2832 debugfs_remove(phba->idiag_drb_acc);
2833 phba->idiag_drb_acc = NULL;
2835 if (phba->idiag_que_acc) {
2837 debugfs_remove(phba->idiag_que_acc);
2838 phba->idiag_que_acc = NULL;
2840 if (phba->idiag_que_info) {
2842 debugfs_remove(phba->idiag_que_info);
2843 phba->idiag_que_info = NULL;
2845 if (phba->idiag_pci_cfg) {
2847 debugfs_remove(phba->idiag_pci_cfg);
2848 phba->idiag_pci_cfg = NULL;
2851 /* Finally remove the iDiag debugfs root */
2852 if (phba->idiag_root) {
2854 debugfs_remove(phba->idiag_root);
2855 phba->idiag_root = NULL;
2859 if (phba->hba_debugfs_root) {
2860 debugfs_remove(phba->hba_debugfs_root); /* fnX */
2861 phba->hba_debugfs_root = NULL;
2862 atomic_dec(&lpfc_debugfs_hba_count);
2865 if (atomic_read(&lpfc_debugfs_hba_count) == 0) {
2866 debugfs_remove(lpfc_debugfs_root); /* lpfc */
2867 lpfc_debugfs_root = NULL;