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[SCSI] lpfc 8.2.4 : Enhance debugfs use
[linux-2.6/x86.git] / drivers / scsi / lpfc / lpfc_debugfs.c
blob783d1eea13efdb4cfe01d9ca49429244b6d74912
1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2007 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
6 * www.emulex.com *
7 * *
8 * This program is free software; you can redistribute it and/or *
9 * modify it under the terms of version 2 of the GNU General *
10 * Public License as published by the Free Software Foundation. *
11 * This program is distributed in the hope that it will be useful. *
12 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
13 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
14 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
15 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
16 * TO BE LEGALLY INVALID. See the GNU General Public License for *
17 * more details, a copy of which can be found in the file COPYING *
18 * included with this package. *
19 *******************************************************************/
20
21 #include <linux/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/pci.h>
28 #include <linux/spinlock.h>
29 #include <linux/ctype.h>
30 #include <linux/version.h>
31
32 #include <scsi/scsi.h>
33 #include <scsi/scsi_device.h>
34 #include <scsi/scsi_host.h>
35 #include <scsi/scsi_transport_fc.h>
36
37 #include "lpfc_hw.h"
38 #include "lpfc_sli.h"
39 #include "lpfc_disc.h"
40 #include "lpfc_scsi.h"
41 #include "lpfc.h"
42 #include "lpfc_logmsg.h"
43 #include "lpfc_crtn.h"
44 #include "lpfc_vport.h"
45 #include "lpfc_version.h"
46 #include "lpfc_compat.h"
47 #include "lpfc_debugfs.h"
48
49 #ifdef CONFIG_LPFC_DEBUG_FS
50 /* debugfs interface
51 *
52 * To access this interface the user should:
53 * # mkdir /debug
54 * # mount -t debugfs none /debug
55 *
56 * The lpfc debugfs directory hierachy is:
57 * lpfc/lpfcX/vportY
58 * where X is the lpfc hba unique_id
59 * where Y is the vport VPI on that hba
60 *
61 * Debugging services available per vport:
62 * discovery_trace
63 * This is an ACSII readable file that contains a trace of the last
64 * lpfc_debugfs_max_disc_trc events that happened on a specific vport.
65 * See lpfc_debugfs.h for different categories of
66 * discovery events. To enable the discovery trace, the following
67 * module parameters must be set:
68 * lpfc_debugfs_enable=1 Turns on lpfc debugfs filesystem support
69 * lpfc_debugfs_max_disc_trc=X Where X is the event trace depth for
70 * EACH vport. X MUST also be a power of 2.
71 * lpfc_debugfs_mask_disc_trc=Y Where Y is an event mask as defined in
72 * lpfc_debugfs.h .
73 */
74 static int lpfc_debugfs_enable = 1;
75 module_param(lpfc_debugfs_enable, int, 0);
76 MODULE_PARM_DESC(lpfc_debugfs_enable, "Enable debugfs services");
77
78 /* This MUST be a power of 2 */
79 static int lpfc_debugfs_max_disc_trc;
80 module_param(lpfc_debugfs_max_disc_trc, int, 0);
81 MODULE_PARM_DESC(lpfc_debugfs_max_disc_trc,
82 "Set debugfs discovery trace depth");
83
84 /* This MUST be a power of 2 */
85 static int lpfc_debugfs_max_slow_ring_trc;
86 module_param(lpfc_debugfs_max_slow_ring_trc, int, 0);
87 MODULE_PARM_DESC(lpfc_debugfs_max_slow_ring_trc,
88 "Set debugfs slow ring trace depth");
89
90 int lpfc_debugfs_mask_disc_trc;
91 module_param(lpfc_debugfs_mask_disc_trc, int, 0);
92 MODULE_PARM_DESC(lpfc_debugfs_mask_disc_trc,
93 "Set debugfs discovery trace mask");
94
95 #include <linux/debugfs.h>
96
97 /* size of output line, for discovery_trace and slow_ring_trace */
98 #define LPFC_DEBUG_TRC_ENTRY_SIZE 100
99
100 /* nodelist output buffer size */
101 #define LPFC_NODELIST_SIZE 8192
102 #define LPFC_NODELIST_ENTRY_SIZE 120
103
104 /* dumpHBASlim output buffer size */
105 #define LPFC_DUMPHBASLIM_SIZE 4096
106
107 /* dumpHostSlim output buffer size */
108 #define LPFC_DUMPHOSTSLIM_SIZE 4096
109
110 /* hbqinfo output buffer size */
111 #define LPFC_HBQINFO_SIZE 8192
112
113 struct lpfc_debug {
114 char *buffer;
115 int len;
116 };
117
118 static atomic_t lpfc_debugfs_seq_trc_cnt = ATOMIC_INIT(0);
119 static unsigned long lpfc_debugfs_start_time = 0L;
120
121 static int
122 lpfc_debugfs_disc_trc_data(struct lpfc_vport *vport, char *buf, int size)
123 {
124 int i, index, len, enable;
125 uint32_t ms;
126 struct lpfc_debugfs_trc *dtp;
127 char buffer[LPFC_DEBUG_TRC_ENTRY_SIZE];
128
129
130 enable = lpfc_debugfs_enable;
131 lpfc_debugfs_enable = 0;
132
133 len = 0;
134 index = (atomic_read(&vport->disc_trc_cnt) + 1) &
135 (lpfc_debugfs_max_disc_trc - 1);
136 for (i = index; i < lpfc_debugfs_max_disc_trc; i++) {
137 dtp = vport->disc_trc + i;
138 if (!dtp->fmt)
139 continue;
140 ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
141 snprintf(buffer,
142 LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
143 dtp->seq_cnt, ms, dtp->fmt);
144 len += snprintf(buf+len, size-len, buffer,
145 dtp->data1, dtp->data2, dtp->data3);
146 }
147 for (i = 0; i < index; i++) {
148 dtp = vport->disc_trc + i;
149 if (!dtp->fmt)
150 continue;
151 ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
152 snprintf(buffer,
153 LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
154 dtp->seq_cnt, ms, dtp->fmt);
155 len += snprintf(buf+len, size-len, buffer,
156 dtp->data1, dtp->data2, dtp->data3);
157 }
158
159 lpfc_debugfs_enable = enable;
160 return len;
161 }
162
163 static int
164 lpfc_debugfs_slow_ring_trc_data(struct lpfc_hba *phba, char *buf, int size)
165 {
166 int i, index, len, enable;
167 uint32_t ms;
168 struct lpfc_debugfs_trc *dtp;
169 char buffer[LPFC_DEBUG_TRC_ENTRY_SIZE];
170
171
172 enable = lpfc_debugfs_enable;
173 lpfc_debugfs_enable = 0;
174
175 len = 0;
176 index = (atomic_read(&phba->slow_ring_trc_cnt) + 1) &
177 (lpfc_debugfs_max_slow_ring_trc - 1);
178 for (i = index; i < lpfc_debugfs_max_slow_ring_trc; i++) {
179 dtp = phba->slow_ring_trc + i;
180 if (!dtp->fmt)
181 continue;
182 ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
183 snprintf(buffer,
184 LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
185 dtp->seq_cnt, ms, dtp->fmt);
186 len += snprintf(buf+len, size-len, buffer,
187 dtp->data1, dtp->data2, dtp->data3);
188 }
189 for (i = 0; i < index; i++) {
190 dtp = phba->slow_ring_trc + i;
191 if (!dtp->fmt)
192 continue;
193 ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
194 snprintf(buffer,
195 LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
196 dtp->seq_cnt, ms, dtp->fmt);
197 len += snprintf(buf+len, size-len, buffer,
198 dtp->data1, dtp->data2, dtp->data3);
199 }
200
201 lpfc_debugfs_enable = enable;
202 return len;
203 }
204
205 static int lpfc_debugfs_last_hbq = -1;
206
207 static int
208 lpfc_debugfs_hbqinfo_data(struct lpfc_hba *phba, char *buf, int size)
209 {
210 int len = 0;
211 int cnt, i, j, found, posted, low;
212 uint32_t phys, raw_index, getidx;
213 struct lpfc_hbq_init *hip;
214 struct hbq_s *hbqs;
215 struct lpfc_hbq_entry *hbqe;
216 struct lpfc_dmabuf *d_buf;
217 struct hbq_dmabuf *hbq_buf;
218
219 cnt = LPFC_HBQINFO_SIZE;
220 spin_lock_irq(&phba->hbalock);
221
222 /* toggle between multiple hbqs, if any */
223 i = lpfc_sli_hbq_count();
224 if (i > 1) {
225 lpfc_debugfs_last_hbq++;
226 if (lpfc_debugfs_last_hbq >= i)
227 lpfc_debugfs_last_hbq = 0;
228 }
229 else
230 lpfc_debugfs_last_hbq = 0;
231
232 i = lpfc_debugfs_last_hbq;
233
234 len += snprintf(buf+len, size-len, "HBQ %d Info\n", i);
235
236 hbqs = &phba->hbqs[i];
237 posted = 0;
238 list_for_each_entry(d_buf, &hbqs->hbq_buffer_list, list)
239 posted++;
240
241 hip = lpfc_hbq_defs[i];
242 len += snprintf(buf+len, size-len,
243 "idx:%d prof:%d rn:%d bufcnt:%d icnt:%d acnt:%d posted %d\n",
244 hip->hbq_index, hip->profile, hip->rn,
245 hip->buffer_count, hip->init_count, hip->add_count, posted);
246
247 raw_index = phba->hbq_get[i];
248 getidx = le32_to_cpu(raw_index);
249 len += snprintf(buf+len, size-len,
250 "entrys:%d bufcnt:%d Put:%d nPut:%d localGet:%d hbaGet:%d\n",
251 hbqs->entry_count, hbqs->buffer_count, hbqs->hbqPutIdx,
252 hbqs->next_hbqPutIdx, hbqs->local_hbqGetIdx, getidx);
253
254 hbqe = (struct lpfc_hbq_entry *) phba->hbqs[i].hbq_virt;
255 for (j=0; j<hbqs->entry_count; j++) {
256 len += snprintf(buf+len, size-len,
257 "%03d: %08x %04x %05x ", j,
258 le32_to_cpu(hbqe->bde.addrLow),
259 le32_to_cpu(hbqe->bde.tus.w),
260 le32_to_cpu(hbqe->buffer_tag));
261 i = 0;
262 found = 0;
263
264 /* First calculate if slot has an associated posted buffer */
265 low = hbqs->hbqPutIdx - posted;
266 if (low >= 0) {
267 if ((j >= hbqs->hbqPutIdx) || (j < low)) {
268 len += snprintf(buf+len, size-len, "Unused\n");
269 goto skipit;
270 }
271 }
272 else {
273 if ((j >= hbqs->hbqPutIdx) &&
274 (j < (hbqs->entry_count+low))) {
275 len += snprintf(buf+len, size-len, "Unused\n");
276 goto skipit;
277 }
278 }
279
280 /* Get the Buffer info for the posted buffer */
281 list_for_each_entry(d_buf, &hbqs->hbq_buffer_list, list) {
282 hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf);
283 phys = ((uint64_t)hbq_buf->dbuf.phys & 0xffffffff);
284 if (phys == le32_to_cpu(hbqe->bde.addrLow)) {
285 len += snprintf(buf+len, size-len,
286 "Buf%d: %p %06x\n", i,
287 hbq_buf->dbuf.virt, hbq_buf->tag);
288 found = 1;
289 break;
290 }
291 i++;
292 }
293 if (!found) {
294 len += snprintf(buf+len, size-len, "No DMAinfo?\n");
295 }
296 skipit:
297 hbqe++;
298 if (len > LPFC_HBQINFO_SIZE - 54)
299 break;
300 }
301 spin_unlock_irq(&phba->hbalock);
302 return len;
303 }
304
305 static int lpfc_debugfs_last_hba_slim_off;
306
307 static int
308 lpfc_debugfs_dumpHBASlim_data(struct lpfc_hba *phba, char *buf, int size)
309 {
310 int len = 0;
311 int i, off;
312 uint32_t *ptr;
313 char buffer[1024];
314
315 off = 0;
316 spin_lock_irq(&phba->hbalock);
317
318 len += snprintf(buf+len, size-len, "HBA SLIM\n");
319 lpfc_memcpy_from_slim(buffer,
320 ((uint8_t *)phba->MBslimaddr) + lpfc_debugfs_last_hba_slim_off,
321 1024);
322
323 ptr = (uint32_t *)&buffer[0];
324 off = lpfc_debugfs_last_hba_slim_off;
325
326 /* Set it up for the next time */
327 lpfc_debugfs_last_hba_slim_off += 1024;
328 if (lpfc_debugfs_last_hba_slim_off >= 4096)
329 lpfc_debugfs_last_hba_slim_off = 0;
330
331 i = 1024;
332 while (i > 0) {
333 len += snprintf(buf+len, size-len,
334 "%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
335 off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4),
336 *(ptr+5), *(ptr+6), *(ptr+7));
337 ptr += 8;
338 i -= (8 * sizeof(uint32_t));
339 off += (8 * sizeof(uint32_t));
340 }
341
342 spin_unlock_irq(&phba->hbalock);
343 return len;
344 }
345
346 static int
347 lpfc_debugfs_dumpHostSlim_data(struct lpfc_hba *phba, char *buf, int size)
348 {
349 int len = 0;
350 int i, off;
351 uint32_t word0, word1, word2, word3;
352 uint32_t *ptr;
353 struct lpfc_pgp *pgpp;
354 struct lpfc_sli *psli = &phba->sli;
355 struct lpfc_sli_ring *pring;
356
357 off = 0;
358 spin_lock_irq(&phba->hbalock);
359
360 len += snprintf(buf+len, size-len, "SLIM Mailbox\n");
361 ptr = (uint32_t *)phba->slim2p;
362 i = sizeof(MAILBOX_t);
363 while (i > 0) {
364 len += snprintf(buf+len, size-len,
365 "%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
366 off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4),
367 *(ptr+5), *(ptr+6), *(ptr+7));
368 ptr += 8;
369 i -= (8 * sizeof(uint32_t));
370 off += (8 * sizeof(uint32_t));
371 }
372
373 len += snprintf(buf+len, size-len, "SLIM PCB\n");
374 ptr = (uint32_t *)&phba->slim2p->pcb;
375 i = sizeof(PCB_t);
376 while (i > 0) {
377 len += snprintf(buf+len, size-len,
378 "%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
379 off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4),
380 *(ptr+5), *(ptr+6), *(ptr+7));
381 ptr += 8;
382 i -= (8 * sizeof(uint32_t));
383 off += (8 * sizeof(uint32_t));
384 }
385
386 pgpp = (struct lpfc_pgp *)&phba->slim2p->mbx.us.s3_pgp.port;
387 pring = &psli->ring[0];
388 len += snprintf(buf+len, size-len,
389 "Ring 0: CMD GetInx:%d (Max:%d Next:%d Local:%d flg:x%x) "
390 "RSP PutInx:%d Max:%d\n",
391 pgpp->cmdGetInx, pring->numCiocb,
392 pring->next_cmdidx, pring->local_getidx, pring->flag,
393 pgpp->rspPutInx, pring->numRiocb);
394 pgpp++;
395
396 pring = &psli->ring[1];
397 len += snprintf(buf+len, size-len,
398 "Ring 1: CMD GetInx:%d (Max:%d Next:%d Local:%d flg:x%x) "
399 "RSP PutInx:%d Max:%d\n",
400 pgpp->cmdGetInx, pring->numCiocb,
401 pring->next_cmdidx, pring->local_getidx, pring->flag,
402 pgpp->rspPutInx, pring->numRiocb);
403 pgpp++;
404
405 pring = &psli->ring[2];
406 len += snprintf(buf+len, size-len,
407 "Ring 2: CMD GetInx:%d (Max:%d Next:%d Local:%d flg:x%x) "
408 "RSP PutInx:%d Max:%d\n",
409 pgpp->cmdGetInx, pring->numCiocb,
410 pring->next_cmdidx, pring->local_getidx, pring->flag,
411 pgpp->rspPutInx, pring->numRiocb);
412 pgpp++;
413
414 pring = &psli->ring[3];
415 len += snprintf(buf+len, size-len,
416 "Ring 3: CMD GetInx:%d (Max:%d Next:%d Local:%d flg:x%x) "
417 "RSP PutInx:%d Max:%d\n",
418 pgpp->cmdGetInx, pring->numCiocb,
419 pring->next_cmdidx, pring->local_getidx, pring->flag,
420 pgpp->rspPutInx, pring->numRiocb);
421
422
423 ptr = (uint32_t *)&phba->slim2p->mbx.us.s3_pgp.hbq_get;
424 word0 = readl(phba->HAregaddr);
425 word1 = readl(phba->CAregaddr);
426 word2 = readl(phba->HSregaddr);
427 word3 = readl(phba->HCregaddr);
428 len += snprintf(buf+len, size-len, "HA:%08x CA:%08x HS:%08x HC:%08x\n",
429 word0, word1, word2, word3);
430 spin_unlock_irq(&phba->hbalock);
431 return len;
432 }
433
434 static int
435 lpfc_debugfs_nodelist_data(struct lpfc_vport *vport, char *buf, int size)
436 {
437 int len = 0;
438 int cnt;
439 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
440 struct lpfc_nodelist *ndlp;
441 unsigned char *statep, *name;
442
443 cnt = (LPFC_NODELIST_SIZE / LPFC_NODELIST_ENTRY_SIZE);
444
445 spin_lock_irq(shost->host_lock);
446 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
447 if (!cnt) {
448 len += snprintf(buf+len, size-len,
449 "Missing Nodelist Entries\n");
450 break;
451 }
452 cnt--;
453 switch (ndlp->nlp_state) {
454 case NLP_STE_UNUSED_NODE:
455 statep = "UNUSED";
456 break;
457 case NLP_STE_PLOGI_ISSUE:
458 statep = "PLOGI ";
459 break;
460 case NLP_STE_ADISC_ISSUE:
461 statep = "ADISC ";
462 break;
463 case NLP_STE_REG_LOGIN_ISSUE:
464 statep = "REGLOG";
465 break;
466 case NLP_STE_PRLI_ISSUE:
467 statep = "PRLI ";
468 break;
469 case NLP_STE_UNMAPPED_NODE:
470 statep = "UNMAP ";
471 break;
472 case NLP_STE_MAPPED_NODE:
473 statep = "MAPPED";
474 break;
475 case NLP_STE_NPR_NODE:
476 statep = "NPR ";
477 break;
478 default:
479 statep = "UNKNOWN";
480 }
481 len += snprintf(buf+len, size-len, "%s DID:x%06x ",
482 statep, ndlp->nlp_DID);
483 name = (unsigned char *)&ndlp->nlp_portname;
484 len += snprintf(buf+len, size-len,
485 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x ",
486 *name, *(name+1), *(name+2), *(name+3),
487 *(name+4), *(name+5), *(name+6), *(name+7));
488 name = (unsigned char *)&ndlp->nlp_nodename;
489 len += snprintf(buf+len, size-len,
490 "WWNN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x ",
491 *name, *(name+1), *(name+2), *(name+3),
492 *(name+4), *(name+5), *(name+6), *(name+7));
493 len += snprintf(buf+len, size-len, "RPI:%03d flag:x%08x ",
494 ndlp->nlp_rpi, ndlp->nlp_flag);
495 if (!ndlp->nlp_type)
496 len += snprintf(buf+len, size-len, "UNKNOWN_TYPE ");
497 if (ndlp->nlp_type & NLP_FC_NODE)
498 len += snprintf(buf+len, size-len, "FC_NODE ");
499 if (ndlp->nlp_type & NLP_FABRIC)
500 len += snprintf(buf+len, size-len, "FABRIC ");
501 if (ndlp->nlp_type & NLP_FCP_TARGET)
502 len += snprintf(buf+len, size-len, "FCP_TGT sid:%d ",
503 ndlp->nlp_sid);
504 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
505 len += snprintf(buf+len, size-len, "FCP_INITIATOR ");
506 len += snprintf(buf+len, size-len, "refcnt:%x",
507 atomic_read(&ndlp->kref.refcount));
508 len += snprintf(buf+len, size-len, "\n");
509 }
510 spin_unlock_irq(shost->host_lock);
511 return len;
512 }
513 #endif
514
515
516 inline void
517 lpfc_debugfs_disc_trc(struct lpfc_vport *vport, int mask, char *fmt,
518 uint32_t data1, uint32_t data2, uint32_t data3)
519 {
520 #ifdef CONFIG_LPFC_DEBUG_FS
521 struct lpfc_debugfs_trc *dtp;
522 int index;
523
524 if (!(lpfc_debugfs_mask_disc_trc & mask))
525 return;
526
527 if (!lpfc_debugfs_enable || !lpfc_debugfs_max_disc_trc ||
528 !vport || !vport->disc_trc)
529 return;
530
531 index = atomic_inc_return(&vport->disc_trc_cnt) &
532 (lpfc_debugfs_max_disc_trc - 1);
533 dtp = vport->disc_trc + index;
534 dtp->fmt = fmt;
535 dtp->data1 = data1;
536 dtp->data2 = data2;
537 dtp->data3 = data3;
538 dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt);
539 dtp->jif = jiffies;
540 #endif
541 return;
542 }
543
544 inline void
545 lpfc_debugfs_slow_ring_trc(struct lpfc_hba *phba, char *fmt,
546 uint32_t data1, uint32_t data2, uint32_t data3)
547 {
548 #ifdef CONFIG_LPFC_DEBUG_FS
549 struct lpfc_debugfs_trc *dtp;
550 int index;
551
552 if (!lpfc_debugfs_enable || !lpfc_debugfs_max_slow_ring_trc ||
553 !phba || !phba->slow_ring_trc)
554 return;
555
556 index = atomic_inc_return(&phba->slow_ring_trc_cnt) &
557 (lpfc_debugfs_max_slow_ring_trc - 1);
558 dtp = phba->slow_ring_trc + index;
559 dtp->fmt = fmt;
560 dtp->data1 = data1;
561 dtp->data2 = data2;
562 dtp->data3 = data3;
563 dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt);
564 dtp->jif = jiffies;
565 #endif
566 return;
567 }
568
569 #ifdef CONFIG_LPFC_DEBUG_FS
570 static int
571 lpfc_debugfs_disc_trc_open(struct inode *inode, struct file *file)
572 {
573 struct lpfc_vport *vport = inode->i_private;
574 struct lpfc_debug *debug;
575 int size;
576 int rc = -ENOMEM;
577
578 if (!lpfc_debugfs_max_disc_trc) {
579 rc = -ENOSPC;
580 goto out;
581 }
582
583 debug = kmalloc(sizeof(*debug), GFP_KERNEL);
584 if (!debug)
585 goto out;
586
587 /* Round to page boundry */
588 size = (lpfc_debugfs_max_disc_trc * LPFC_DEBUG_TRC_ENTRY_SIZE);
589 size = PAGE_ALIGN(size);
590
591 debug->buffer = kmalloc(size, GFP_KERNEL);
592 if (!debug->buffer) {
593 kfree(debug);
594 goto out;
595 }
596
597 debug->len = lpfc_debugfs_disc_trc_data(vport, debug->buffer, size);
598 file->private_data = debug;
599
600 rc = 0;
601 out:
602 return rc;
603 }
604
605 static int
606 lpfc_debugfs_slow_ring_trc_open(struct inode *inode, struct file *file)
607 {
608 struct lpfc_hba *phba = inode->i_private;
609 struct lpfc_debug *debug;
610 int size;
611 int rc = -ENOMEM;
612
613 if (!lpfc_debugfs_max_slow_ring_trc) {
614 rc = -ENOSPC;
615 goto out;
616 }
617
618 debug = kmalloc(sizeof(*debug), GFP_KERNEL);
619 if (!debug)
620 goto out;
621
622 /* Round to page boundry */
623 size = (lpfc_debugfs_max_slow_ring_trc * LPFC_DEBUG_TRC_ENTRY_SIZE);
624 size = PAGE_ALIGN(size);
625
626 debug->buffer = kmalloc(size, GFP_KERNEL);
627 if (!debug->buffer) {
628 kfree(debug);
629 goto out;
630 }
631
632 debug->len = lpfc_debugfs_slow_ring_trc_data(phba, debug->buffer, size);
633 file->private_data = debug;
634
635 rc = 0;
636 out:
637 return rc;
638 }
639
640 static int
641 lpfc_debugfs_hbqinfo_open(struct inode *inode, struct file *file)
642 {
643 struct lpfc_hba *phba = inode->i_private;
644 struct lpfc_debug *debug;
645 int rc = -ENOMEM;
646
647 debug = kmalloc(sizeof(*debug), GFP_KERNEL);
648 if (!debug)
649 goto out;
650
651 /* Round to page boundry */
652 debug->buffer = kmalloc(LPFC_HBQINFO_SIZE, GFP_KERNEL);
653 if (!debug->buffer) {
654 kfree(debug);
655 goto out;
656 }
657
658 debug->len = lpfc_debugfs_hbqinfo_data(phba, debug->buffer,
659 LPFC_HBQINFO_SIZE);
660 file->private_data = debug;
661
662 rc = 0;
663 out:
664 return rc;
665 }
666
667 static int
668 lpfc_debugfs_dumpHBASlim_open(struct inode *inode, struct file *file)
669 {
670 struct lpfc_hba *phba = inode->i_private;
671 struct lpfc_debug *debug;
672 int rc = -ENOMEM;
673
674 debug = kmalloc(sizeof(*debug), GFP_KERNEL);
675 if (!debug)
676 goto out;
677
678 /* Round to page boundry */
679 debug->buffer = kmalloc(LPFC_DUMPHBASLIM_SIZE, GFP_KERNEL);
680 if (!debug->buffer) {
681 kfree(debug);
682 goto out;
683 }
684
685 debug->len = lpfc_debugfs_dumpHBASlim_data(phba, debug->buffer,
686 LPFC_DUMPHBASLIM_SIZE);
687 file->private_data = debug;
688
689 rc = 0;
690 out:
691 return rc;
692 }
693
694 static int
695 lpfc_debugfs_dumpHostSlim_open(struct inode *inode, struct file *file)
696 {
697 struct lpfc_hba *phba = inode->i_private;
698 struct lpfc_debug *debug;
699 int rc = -ENOMEM;
700
701 debug = kmalloc(sizeof(*debug), GFP_KERNEL);
702 if (!debug)
703 goto out;
704
705 /* Round to page boundry */
706 debug->buffer = kmalloc(LPFC_DUMPHOSTSLIM_SIZE, GFP_KERNEL);
707 if (!debug->buffer) {
708 kfree(debug);
709 goto out;
710 }
711
712 debug->len = lpfc_debugfs_dumpHostSlim_data(phba, debug->buffer,
713 LPFC_DUMPHOSTSLIM_SIZE);
714 file->private_data = debug;
715
716 rc = 0;
717 out:
718 return rc;
719 }
720
721 static int
722 lpfc_debugfs_nodelist_open(struct inode *inode, struct file *file)
723 {
724 struct lpfc_vport *vport = inode->i_private;
725 struct lpfc_debug *debug;
726 int rc = -ENOMEM;
727
728 debug = kmalloc(sizeof(*debug), GFP_KERNEL);
729 if (!debug)
730 goto out;
731
732 /* Round to page boundry */
733 debug->buffer = kmalloc(LPFC_NODELIST_SIZE, GFP_KERNEL);
734 if (!debug->buffer) {
735 kfree(debug);
736 goto out;
737 }
738
739 debug->len = lpfc_debugfs_nodelist_data(vport, debug->buffer,
740 LPFC_NODELIST_SIZE);
741 file->private_data = debug;
742
743 rc = 0;
744 out:
745 return rc;
746 }
747
748 static loff_t
749 lpfc_debugfs_lseek(struct file *file, loff_t off, int whence)
750 {
751 struct lpfc_debug *debug;
752 loff_t pos = -1;
753
754 debug = file->private_data;
755
756 switch (whence) {
757 case 0:
758 pos = off;
759 break;
760 case 1:
761 pos = file->f_pos + off;
762 break;
763 case 2:
764 pos = debug->len - off;
765 }
766 return (pos < 0 || pos > debug->len) ? -EINVAL : (file->f_pos = pos);
767 }
768
769 static ssize_t
770 lpfc_debugfs_read(struct file *file, char __user *buf,
771 size_t nbytes, loff_t *ppos)
772 {
773 struct lpfc_debug *debug = file->private_data;
774 return simple_read_from_buffer(buf, nbytes, ppos, debug->buffer,
775 debug->len);
776 }
777
778 static int
779 lpfc_debugfs_release(struct inode *inode, struct file *file)
780 {
781 struct lpfc_debug *debug = file->private_data;
782
783 kfree(debug->buffer);
784 kfree(debug);
785
786 return 0;
787 }
788
789 #undef lpfc_debugfs_op_disc_trc
790 static struct file_operations lpfc_debugfs_op_disc_trc = {
791 .owner = THIS_MODULE,
792 .open = lpfc_debugfs_disc_trc_open,
793 .llseek = lpfc_debugfs_lseek,
794 .read = lpfc_debugfs_read,
795 .release = lpfc_debugfs_release,
796 };
797
798 #undef lpfc_debugfs_op_nodelist
799 static struct file_operations lpfc_debugfs_op_nodelist = {
800 .owner = THIS_MODULE,
801 .open = lpfc_debugfs_nodelist_open,
802 .llseek = lpfc_debugfs_lseek,
803 .read = lpfc_debugfs_read,
804 .release = lpfc_debugfs_release,
805 };
806
807 #undef lpfc_debugfs_op_hbqinfo
808 static struct file_operations lpfc_debugfs_op_hbqinfo = {
809 .owner = THIS_MODULE,
810 .open = lpfc_debugfs_hbqinfo_open,
811 .llseek = lpfc_debugfs_lseek,
812 .read = lpfc_debugfs_read,
813 .release = lpfc_debugfs_release,
814 };
815
816 #undef lpfc_debugfs_op_dumpHBASlim
817 static struct file_operations lpfc_debugfs_op_dumpHBASlim = {
818 .owner = THIS_MODULE,
819 .open = lpfc_debugfs_dumpHBASlim_open,
820 .llseek = lpfc_debugfs_lseek,
821 .read = lpfc_debugfs_read,
822 .release = lpfc_debugfs_release,
823 };
824
825 #undef lpfc_debugfs_op_dumpHostSlim
826 static struct file_operations lpfc_debugfs_op_dumpHostSlim = {
827 .owner = THIS_MODULE,
828 .open = lpfc_debugfs_dumpHostSlim_open,
829 .llseek = lpfc_debugfs_lseek,
830 .read = lpfc_debugfs_read,
831 .release = lpfc_debugfs_release,
832 };
833
834 #undef lpfc_debugfs_op_slow_ring_trc
835 static struct file_operations lpfc_debugfs_op_slow_ring_trc = {
836 .owner = THIS_MODULE,
837 .open = lpfc_debugfs_slow_ring_trc_open,
838 .llseek = lpfc_debugfs_lseek,
839 .read = lpfc_debugfs_read,
840 .release = lpfc_debugfs_release,
841 };
842
843 static struct dentry *lpfc_debugfs_root = NULL;
844 static atomic_t lpfc_debugfs_hba_count;
845 #endif
846
847 inline void
848 lpfc_debugfs_initialize(struct lpfc_vport *vport)
849 {
850 #ifdef CONFIG_LPFC_DEBUG_FS
851 struct lpfc_hba *phba = vport->phba;
852 char name[64];
853 uint32_t num, i;
854
855 if (!lpfc_debugfs_enable)
856 return;
857
858 /* Setup lpfc root directory */
859 if (!lpfc_debugfs_root) {
860 lpfc_debugfs_root = debugfs_create_dir("lpfc", NULL);
861 atomic_set(&lpfc_debugfs_hba_count, 0);
862 if (!lpfc_debugfs_root) {
863 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
864 "0409 Cannot create debugfs root\n");
865 goto debug_failed;
866 }
867 }
868 if (!lpfc_debugfs_start_time)
869 lpfc_debugfs_start_time = jiffies;
870
871 /* Setup lpfcX directory for specific HBA */
872 snprintf(name, sizeof(name), "lpfc%d", phba->brd_no);
873 if (!phba->hba_debugfs_root) {
874 phba->hba_debugfs_root =
875 debugfs_create_dir(name, lpfc_debugfs_root);
876 if (!phba->hba_debugfs_root) {
877 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
878 "0409 Cannot create debugfs hba\n");
879 goto debug_failed;
880 }
881 atomic_inc(&lpfc_debugfs_hba_count);
882 atomic_set(&phba->debugfs_vport_count, 0);
883
884 /* Setup hbqinfo */
885 snprintf(name, sizeof(name), "hbqinfo");
886 phba->debug_hbqinfo =
887 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
888 phba->hba_debugfs_root,
889 phba, &lpfc_debugfs_op_hbqinfo);
890 if (!phba->debug_hbqinfo) {
891 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
892 "0409 Cannot create debugfs hbqinfo\n");
893 goto debug_failed;
894 }
895
896 /* Setup dumpHBASlim */
897 snprintf(name, sizeof(name), "dumpHBASlim");
898 phba->debug_dumpHBASlim =
899 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
900 phba->hba_debugfs_root,
901 phba, &lpfc_debugfs_op_dumpHBASlim);
902 if (!phba->debug_dumpHBASlim) {
903 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
904 "0409 Cannot create debugfs dumpHBASlim\n");
905 goto debug_failed;
906 }
907
908 /* Setup dumpHostSlim */
909 snprintf(name, sizeof(name), "dumpHostSlim");
910 phba->debug_dumpHostSlim =
911 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
912 phba->hba_debugfs_root,
913 phba, &lpfc_debugfs_op_dumpHostSlim);
914 if (!phba->debug_dumpHostSlim) {
915 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
916 "0409 Cannot create debugfs dumpHostSlim\n");
917 goto debug_failed;
918 }
919
920 /* Setup slow ring trace */
921 if (lpfc_debugfs_max_slow_ring_trc) {
922 num = lpfc_debugfs_max_slow_ring_trc - 1;
923 if (num & lpfc_debugfs_max_slow_ring_trc) {
924 /* Change to be a power of 2 */
925 num = lpfc_debugfs_max_slow_ring_trc;
926 i = 0;
927 while (num > 1) {
928 num = num >> 1;
929 i++;
930 }
931 lpfc_debugfs_max_slow_ring_trc = (1 << i);
932 printk(KERN_ERR
933 "lpfc_debugfs_max_disc_trc changed to "
934 "%d\n", lpfc_debugfs_max_disc_trc);
935 }
936 }
937
938
939 snprintf(name, sizeof(name), "slow_ring_trace");
940 phba->debug_slow_ring_trc =
941 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
942 phba->hba_debugfs_root,
943 phba, &lpfc_debugfs_op_slow_ring_trc);
944 if (!phba->debug_slow_ring_trc) {
945 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
946 "0409 Cannot create debugfs "
947 "slow_ring_trace\n");
948 goto debug_failed;
949 }
950 if (!phba->slow_ring_trc) {
951 phba->slow_ring_trc = kmalloc(
952 (sizeof(struct lpfc_debugfs_trc) *
953 lpfc_debugfs_max_slow_ring_trc),
954 GFP_KERNEL);
955 if (!phba->slow_ring_trc) {
956 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
957 "0409 Cannot create debugfs "
958 "slow_ring buffer\n");
959 goto debug_failed;
960 }
961 atomic_set(&phba->slow_ring_trc_cnt, 0);
962 memset(phba->slow_ring_trc, 0,
963 (sizeof(struct lpfc_debugfs_trc) *
964 lpfc_debugfs_max_slow_ring_trc));
965 }
966 }
967
968 snprintf(name, sizeof(name), "vport%d", vport->vpi);
969 if (!vport->vport_debugfs_root) {
970 vport->vport_debugfs_root =
971 debugfs_create_dir(name, phba->hba_debugfs_root);
972 if (!vport->vport_debugfs_root) {
973 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
974 "0409 Cant create debugfs");
975 goto debug_failed;
976 }
977 atomic_inc(&phba->debugfs_vport_count);
978 }
979
980 if (lpfc_debugfs_max_disc_trc) {
981 num = lpfc_debugfs_max_disc_trc - 1;
982 if (num & lpfc_debugfs_max_disc_trc) {
983 /* Change to be a power of 2 */
984 num = lpfc_debugfs_max_disc_trc;
985 i = 0;
986 while (num > 1) {
987 num = num >> 1;
988 i++;
989 }
990 lpfc_debugfs_max_disc_trc = (1 << i);
991 printk(KERN_ERR
992 "lpfc_debugfs_max_disc_trc changed to %d\n",
993 lpfc_debugfs_max_disc_trc);
994 }
995 }
996
997 vport->disc_trc = kzalloc(
998 (sizeof(struct lpfc_debugfs_trc) * lpfc_debugfs_max_disc_trc),
999 GFP_KERNEL);
1000
1001 if (!vport->disc_trc) {
1002 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
1003 "0409 Cannot create debugfs disc trace "
1004 "buffer\n");
1005 goto debug_failed;
1006 }
1007 atomic_set(&vport->disc_trc_cnt, 0);
1008
1009 snprintf(name, sizeof(name), "discovery_trace");
1010 vport->debug_disc_trc =
1011 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
1012 vport->vport_debugfs_root,
1013 vport, &lpfc_debugfs_op_disc_trc);
1014 if (!vport->debug_disc_trc) {
1015 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
1016 "0409 Cannot create debugfs "
1017 "discovery_trace\n");
1018 goto debug_failed;
1019 }
1020 snprintf(name, sizeof(name), "nodelist");
1021 vport->debug_nodelist =
1022 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
1023 vport->vport_debugfs_root,
1024 vport, &lpfc_debugfs_op_nodelist);
1025 if (!vport->debug_nodelist) {
1026 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
1027 "0409 Cant create debugfs nodelist");
1028 goto debug_failed;
1029 }
1030 debug_failed:
1031 return;
1032 #endif
1033 }
1034
1035
1036 inline void
1037 lpfc_debugfs_terminate(struct lpfc_vport *vport)
1038 {
1039 #ifdef CONFIG_LPFC_DEBUG_FS
1040 struct lpfc_hba *phba = vport->phba;
1041
1042 if (vport->disc_trc) {
1043 kfree(vport->disc_trc);
1044 vport->disc_trc = NULL;
1045 }
1046 if (vport->debug_disc_trc) {
1047 debugfs_remove(vport->debug_disc_trc); /* discovery_trace */
1048 vport->debug_disc_trc = NULL;
1049 }
1050 if (vport->debug_nodelist) {
1051 debugfs_remove(vport->debug_nodelist); /* nodelist */
1052 vport->debug_nodelist = NULL;
1053 }
1054
1055 if (vport->vport_debugfs_root) {
1056 debugfs_remove(vport->vport_debugfs_root); /* vportX */
1057 vport->vport_debugfs_root = NULL;
1058 atomic_dec(&phba->debugfs_vport_count);
1059 }
1060 if (atomic_read(&phba->debugfs_vport_count) == 0) {
1061
1062 if (phba->debug_hbqinfo) {
1063 debugfs_remove(phba->debug_hbqinfo); /* hbqinfo */
1064 phba->debug_hbqinfo = NULL;
1065 }
1066 if (phba->debug_dumpHBASlim) {
1067 debugfs_remove(phba->debug_dumpHBASlim); /* HBASlim */
1068 phba->debug_dumpHBASlim = NULL;
1069 }
1070 if (phba->debug_dumpHostSlim) {
1071 debugfs_remove(phba->debug_dumpHostSlim); /* HostSlim */
1072 phba->debug_dumpHostSlim = NULL;
1073 }
1074 if (phba->slow_ring_trc) {
1075 kfree(phba->slow_ring_trc);
1076 phba->slow_ring_trc = NULL;
1077 }
1078 if (phba->debug_slow_ring_trc) {
1079 /* slow_ring_trace */
1080 debugfs_remove(phba->debug_slow_ring_trc);
1081 phba->debug_slow_ring_trc = NULL;
1082 }
1083
1084 if (phba->hba_debugfs_root) {
1085 debugfs_remove(phba->hba_debugfs_root); /* lpfcX */
1086 phba->hba_debugfs_root = NULL;
1087 atomic_dec(&lpfc_debugfs_hba_count);
1088 }
1089
1090 if (atomic_read(&lpfc_debugfs_hba_count) == 0) {
1091 debugfs_remove(lpfc_debugfs_root); /* lpfc */
1092 lpfc_debugfs_root = NULL;
1093 }
1094 }
1095 #endif
1096 return;
1097 }
1098
1099
x86 "subsystem" repository