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[ARM] serial: s3c2410: platform_get_irq() may return signed unnoticed
[linux-2.6/openmoko-kernel/knife-kernel.git] / drivers / scsi / lpfc / lpfc_debugfs.c
blob90272e65957a74569ba1fe7a0df9665668357d1f
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, "usgmap:%x ",
507 ndlp->nlp_usg_map);
508 len += snprintf(buf+len, size-len, "refcnt:%x",
509 atomic_read(&ndlp->kref.refcount));
510 len += snprintf(buf+len, size-len, "\n");
511 }
512 spin_unlock_irq(shost->host_lock);
513 return len;
514 }
515 #endif
516
517
518 inline void
519 lpfc_debugfs_disc_trc(struct lpfc_vport *vport, int mask, char *fmt,
520 uint32_t data1, uint32_t data2, uint32_t data3)
521 {
522 #ifdef CONFIG_LPFC_DEBUG_FS
523 struct lpfc_debugfs_trc *dtp;
524 int index;
525
526 if (!(lpfc_debugfs_mask_disc_trc & mask))
527 return;
528
529 if (!lpfc_debugfs_enable || !lpfc_debugfs_max_disc_trc ||
530 !vport || !vport->disc_trc)
531 return;
532
533 index = atomic_inc_return(&vport->disc_trc_cnt) &
534 (lpfc_debugfs_max_disc_trc - 1);
535 dtp = vport->disc_trc + index;
536 dtp->fmt = fmt;
537 dtp->data1 = data1;
538 dtp->data2 = data2;
539 dtp->data3 = data3;
540 dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt);
541 dtp->jif = jiffies;
542 #endif
543 return;
544 }
545
546 inline void
547 lpfc_debugfs_slow_ring_trc(struct lpfc_hba *phba, char *fmt,
548 uint32_t data1, uint32_t data2, uint32_t data3)
549 {
550 #ifdef CONFIG_LPFC_DEBUG_FS
551 struct lpfc_debugfs_trc *dtp;
552 int index;
553
554 if (!lpfc_debugfs_enable || !lpfc_debugfs_max_slow_ring_trc ||
555 !phba || !phba->slow_ring_trc)
556 return;
557
558 index = atomic_inc_return(&phba->slow_ring_trc_cnt) &
559 (lpfc_debugfs_max_slow_ring_trc - 1);
560 dtp = phba->slow_ring_trc + index;
561 dtp->fmt = fmt;
562 dtp->data1 = data1;
563 dtp->data2 = data2;
564 dtp->data3 = data3;
565 dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt);
566 dtp->jif = jiffies;
567 #endif
568 return;
569 }
570
571 #ifdef CONFIG_LPFC_DEBUG_FS
572 static int
573 lpfc_debugfs_disc_trc_open(struct inode *inode, struct file *file)
574 {
575 struct lpfc_vport *vport = inode->i_private;
576 struct lpfc_debug *debug;
577 int size;
578 int rc = -ENOMEM;
579
580 if (!lpfc_debugfs_max_disc_trc) {
581 rc = -ENOSPC;
582 goto out;
583 }
584
585 debug = kmalloc(sizeof(*debug), GFP_KERNEL);
586 if (!debug)
587 goto out;
588
589 /* Round to page boundry */
590 size = (lpfc_debugfs_max_disc_trc * LPFC_DEBUG_TRC_ENTRY_SIZE);
591 size = PAGE_ALIGN(size);
592
593 debug->buffer = kmalloc(size, GFP_KERNEL);
594 if (!debug->buffer) {
595 kfree(debug);
596 goto out;
597 }
598
599 debug->len = lpfc_debugfs_disc_trc_data(vport, debug->buffer, size);
600 file->private_data = debug;
601
602 rc = 0;
603 out:
604 return rc;
605 }
606
607 static int
608 lpfc_debugfs_slow_ring_trc_open(struct inode *inode, struct file *file)
609 {
610 struct lpfc_hba *phba = inode->i_private;
611 struct lpfc_debug *debug;
612 int size;
613 int rc = -ENOMEM;
614
615 if (!lpfc_debugfs_max_slow_ring_trc) {
616 rc = -ENOSPC;
617 goto out;
618 }
619
620 debug = kmalloc(sizeof(*debug), GFP_KERNEL);
621 if (!debug)
622 goto out;
623
624 /* Round to page boundry */
625 size = (lpfc_debugfs_max_slow_ring_trc * LPFC_DEBUG_TRC_ENTRY_SIZE);
626 size = PAGE_ALIGN(size);
627
628 debug->buffer = kmalloc(size, GFP_KERNEL);
629 if (!debug->buffer) {
630 kfree(debug);
631 goto out;
632 }
633
634 debug->len = lpfc_debugfs_slow_ring_trc_data(phba, debug->buffer, size);
635 file->private_data = debug;
636
637 rc = 0;
638 out:
639 return rc;
640 }
641
642 static int
643 lpfc_debugfs_hbqinfo_open(struct inode *inode, struct file *file)
644 {
645 struct lpfc_hba *phba = inode->i_private;
646 struct lpfc_debug *debug;
647 int rc = -ENOMEM;
648
649 debug = kmalloc(sizeof(*debug), GFP_KERNEL);
650 if (!debug)
651 goto out;
652
653 /* Round to page boundry */
654 debug->buffer = kmalloc(LPFC_HBQINFO_SIZE, GFP_KERNEL);
655 if (!debug->buffer) {
656 kfree(debug);
657 goto out;
658 }
659
660 debug->len = lpfc_debugfs_hbqinfo_data(phba, debug->buffer,
661 LPFC_HBQINFO_SIZE);
662 file->private_data = debug;
663
664 rc = 0;
665 out:
666 return rc;
667 }
668
669 static int
670 lpfc_debugfs_dumpHBASlim_open(struct inode *inode, struct file *file)
671 {
672 struct lpfc_hba *phba = inode->i_private;
673 struct lpfc_debug *debug;
674 int rc = -ENOMEM;
675
676 debug = kmalloc(sizeof(*debug), GFP_KERNEL);
677 if (!debug)
678 goto out;
679
680 /* Round to page boundry */
681 debug->buffer = kmalloc(LPFC_DUMPHBASLIM_SIZE, GFP_KERNEL);
682 if (!debug->buffer) {
683 kfree(debug);
684 goto out;
685 }
686
687 debug->len = lpfc_debugfs_dumpHBASlim_data(phba, debug->buffer,
688 LPFC_DUMPHBASLIM_SIZE);
689 file->private_data = debug;
690
691 rc = 0;
692 out:
693 return rc;
694 }
695
696 static int
697 lpfc_debugfs_dumpHostSlim_open(struct inode *inode, struct file *file)
698 {
699 struct lpfc_hba *phba = inode->i_private;
700 struct lpfc_debug *debug;
701 int rc = -ENOMEM;
702
703 debug = kmalloc(sizeof(*debug), GFP_KERNEL);
704 if (!debug)
705 goto out;
706
707 /* Round to page boundry */
708 debug->buffer = kmalloc(LPFC_DUMPHOSTSLIM_SIZE, GFP_KERNEL);
709 if (!debug->buffer) {
710 kfree(debug);
711 goto out;
712 }
713
714 debug->len = lpfc_debugfs_dumpHostSlim_data(phba, debug->buffer,
715 LPFC_DUMPHOSTSLIM_SIZE);
716 file->private_data = debug;
717
718 rc = 0;
719 out:
720 return rc;
721 }
722
723 static int
724 lpfc_debugfs_nodelist_open(struct inode *inode, struct file *file)
725 {
726 struct lpfc_vport *vport = inode->i_private;
727 struct lpfc_debug *debug;
728 int rc = -ENOMEM;
729
730 debug = kmalloc(sizeof(*debug), GFP_KERNEL);
731 if (!debug)
732 goto out;
733
734 /* Round to page boundry */
735 debug->buffer = kmalloc(LPFC_NODELIST_SIZE, GFP_KERNEL);
736 if (!debug->buffer) {
737 kfree(debug);
738 goto out;
739 }
740
741 debug->len = lpfc_debugfs_nodelist_data(vport, debug->buffer,
742 LPFC_NODELIST_SIZE);
743 file->private_data = debug;
744
745 rc = 0;
746 out:
747 return rc;
748 }
749
750 static loff_t
751 lpfc_debugfs_lseek(struct file *file, loff_t off, int whence)
752 {
753 struct lpfc_debug *debug;
754 loff_t pos = -1;
755
756 debug = file->private_data;
757
758 switch (whence) {
759 case 0:
760 pos = off;
761 break;
762 case 1:
763 pos = file->f_pos + off;
764 break;
765 case 2:
766 pos = debug->len - off;
767 }
768 return (pos < 0 || pos > debug->len) ? -EINVAL : (file->f_pos = pos);
769 }
770
771 static ssize_t
772 lpfc_debugfs_read(struct file *file, char __user *buf,
773 size_t nbytes, loff_t *ppos)
774 {
775 struct lpfc_debug *debug = file->private_data;
776 return simple_read_from_buffer(buf, nbytes, ppos, debug->buffer,
777 debug->len);
778 }
779
780 static int
781 lpfc_debugfs_release(struct inode *inode, struct file *file)
782 {
783 struct lpfc_debug *debug = file->private_data;
784
785 kfree(debug->buffer);
786 kfree(debug);
787
788 return 0;
789 }
790
791 #undef lpfc_debugfs_op_disc_trc
792 static struct file_operations lpfc_debugfs_op_disc_trc = {
793 .owner = THIS_MODULE,
794 .open = lpfc_debugfs_disc_trc_open,
795 .llseek = lpfc_debugfs_lseek,
796 .read = lpfc_debugfs_read,
797 .release = lpfc_debugfs_release,
798 };
799
800 #undef lpfc_debugfs_op_nodelist
801 static struct file_operations lpfc_debugfs_op_nodelist = {
802 .owner = THIS_MODULE,
803 .open = lpfc_debugfs_nodelist_open,
804 .llseek = lpfc_debugfs_lseek,
805 .read = lpfc_debugfs_read,
806 .release = lpfc_debugfs_release,
807 };
808
809 #undef lpfc_debugfs_op_hbqinfo
810 static struct file_operations lpfc_debugfs_op_hbqinfo = {
811 .owner = THIS_MODULE,
812 .open = lpfc_debugfs_hbqinfo_open,
813 .llseek = lpfc_debugfs_lseek,
814 .read = lpfc_debugfs_read,
815 .release = lpfc_debugfs_release,
816 };
817
818 #undef lpfc_debugfs_op_dumpHBASlim
819 static struct file_operations lpfc_debugfs_op_dumpHBASlim = {
820 .owner = THIS_MODULE,
821 .open = lpfc_debugfs_dumpHBASlim_open,
822 .llseek = lpfc_debugfs_lseek,
823 .read = lpfc_debugfs_read,
824 .release = lpfc_debugfs_release,
825 };
826
827 #undef lpfc_debugfs_op_dumpHostSlim
828 static struct file_operations lpfc_debugfs_op_dumpHostSlim = {
829 .owner = THIS_MODULE,
830 .open = lpfc_debugfs_dumpHostSlim_open,
831 .llseek = lpfc_debugfs_lseek,
832 .read = lpfc_debugfs_read,
833 .release = lpfc_debugfs_release,
834 };
835
836 #undef lpfc_debugfs_op_slow_ring_trc
837 static struct file_operations lpfc_debugfs_op_slow_ring_trc = {
838 .owner = THIS_MODULE,
839 .open = lpfc_debugfs_slow_ring_trc_open,
840 .llseek = lpfc_debugfs_lseek,
841 .read = lpfc_debugfs_read,
842 .release = lpfc_debugfs_release,
843 };
844
845 static struct dentry *lpfc_debugfs_root = NULL;
846 static atomic_t lpfc_debugfs_hba_count;
847 #endif
848
849 inline void
850 lpfc_debugfs_initialize(struct lpfc_vport *vport)
851 {
852 #ifdef CONFIG_LPFC_DEBUG_FS
853 struct lpfc_hba *phba = vport->phba;
854 char name[64];
855 uint32_t num, i;
856
857 if (!lpfc_debugfs_enable)
858 return;
859
860 /* Setup lpfc root directory */
861 if (!lpfc_debugfs_root) {
862 lpfc_debugfs_root = debugfs_create_dir("lpfc", NULL);
863 atomic_set(&lpfc_debugfs_hba_count, 0);
864 if (!lpfc_debugfs_root) {
865 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
866 "0409 Cannot create debugfs root\n");
867 goto debug_failed;
868 }
869 }
870 if (!lpfc_debugfs_start_time)
871 lpfc_debugfs_start_time = jiffies;
872
873 /* Setup lpfcX directory for specific HBA */
874 snprintf(name, sizeof(name), "lpfc%d", phba->brd_no);
875 if (!phba->hba_debugfs_root) {
876 phba->hba_debugfs_root =
877 debugfs_create_dir(name, lpfc_debugfs_root);
878 if (!phba->hba_debugfs_root) {
879 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
880 "0409 Cannot create debugfs hba\n");
881 goto debug_failed;
882 }
883 atomic_inc(&lpfc_debugfs_hba_count);
884 atomic_set(&phba->debugfs_vport_count, 0);
885
886 /* Setup hbqinfo */
887 snprintf(name, sizeof(name), "hbqinfo");
888 phba->debug_hbqinfo =
889 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
890 phba->hba_debugfs_root,
891 phba, &lpfc_debugfs_op_hbqinfo);
892 if (!phba->debug_hbqinfo) {
893 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
894 "0409 Cannot create debugfs hbqinfo\n");
895 goto debug_failed;
896 }
897
898 /* Setup dumpHBASlim */
899 snprintf(name, sizeof(name), "dumpHBASlim");
900 phba->debug_dumpHBASlim =
901 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
902 phba->hba_debugfs_root,
903 phba, &lpfc_debugfs_op_dumpHBASlim);
904 if (!phba->debug_dumpHBASlim) {
905 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
906 "0409 Cannot create debugfs dumpHBASlim\n");
907 goto debug_failed;
908 }
909
910 /* Setup dumpHostSlim */
911 snprintf(name, sizeof(name), "dumpHostSlim");
912 phba->debug_dumpHostSlim =
913 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
914 phba->hba_debugfs_root,
915 phba, &lpfc_debugfs_op_dumpHostSlim);
916 if (!phba->debug_dumpHostSlim) {
917 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
918 "0409 Cannot create debugfs dumpHostSlim\n");
919 goto debug_failed;
920 }
921
922 /* Setup slow ring trace */
923 if (lpfc_debugfs_max_slow_ring_trc) {
924 num = lpfc_debugfs_max_slow_ring_trc - 1;
925 if (num & lpfc_debugfs_max_slow_ring_trc) {
926 /* Change to be a power of 2 */
927 num = lpfc_debugfs_max_slow_ring_trc;
928 i = 0;
929 while (num > 1) {
930 num = num >> 1;
931 i++;
932 }
933 lpfc_debugfs_max_slow_ring_trc = (1 << i);
934 printk(KERN_ERR
935 "lpfc_debugfs_max_disc_trc changed to "
936 "%d\n", lpfc_debugfs_max_disc_trc);
937 }
938 }
939
940
941 snprintf(name, sizeof(name), "slow_ring_trace");
942 phba->debug_slow_ring_trc =
943 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
944 phba->hba_debugfs_root,
945 phba, &lpfc_debugfs_op_slow_ring_trc);
946 if (!phba->debug_slow_ring_trc) {
947 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
948 "0409 Cannot create debugfs "
949 "slow_ring_trace\n");
950 goto debug_failed;
951 }
952 if (!phba->slow_ring_trc) {
953 phba->slow_ring_trc = kmalloc(
954 (sizeof(struct lpfc_debugfs_trc) *
955 lpfc_debugfs_max_slow_ring_trc),
956 GFP_KERNEL);
957 if (!phba->slow_ring_trc) {
958 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
959 "0409 Cannot create debugfs "
960 "slow_ring buffer\n");
961 goto debug_failed;
962 }
963 atomic_set(&phba->slow_ring_trc_cnt, 0);
964 memset(phba->slow_ring_trc, 0,
965 (sizeof(struct lpfc_debugfs_trc) *
966 lpfc_debugfs_max_slow_ring_trc));
967 }
968 }
969
970 snprintf(name, sizeof(name), "vport%d", vport->vpi);
971 if (!vport->vport_debugfs_root) {
972 vport->vport_debugfs_root =
973 debugfs_create_dir(name, phba->hba_debugfs_root);
974 if (!vport->vport_debugfs_root) {
975 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
976 "0409 Cant create debugfs");
977 goto debug_failed;
978 }
979 atomic_inc(&phba->debugfs_vport_count);
980 }
981
982 if (lpfc_debugfs_max_disc_trc) {
983 num = lpfc_debugfs_max_disc_trc - 1;
984 if (num & lpfc_debugfs_max_disc_trc) {
985 /* Change to be a power of 2 */
986 num = lpfc_debugfs_max_disc_trc;
987 i = 0;
988 while (num > 1) {
989 num = num >> 1;
990 i++;
991 }
992 lpfc_debugfs_max_disc_trc = (1 << i);
993 printk(KERN_ERR
994 "lpfc_debugfs_max_disc_trc changed to %d\n",
995 lpfc_debugfs_max_disc_trc);
996 }
997 }
998
999 vport->disc_trc = kzalloc(
1000 (sizeof(struct lpfc_debugfs_trc) * lpfc_debugfs_max_disc_trc),
1001 GFP_KERNEL);
1002
1003 if (!vport->disc_trc) {
1004 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
1005 "0409 Cannot create debugfs disc trace "
1006 "buffer\n");
1007 goto debug_failed;
1008 }
1009 atomic_set(&vport->disc_trc_cnt, 0);
1010
1011 snprintf(name, sizeof(name), "discovery_trace");
1012 vport->debug_disc_trc =
1013 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
1014 vport->vport_debugfs_root,
1015 vport, &lpfc_debugfs_op_disc_trc);
1016 if (!vport->debug_disc_trc) {
1017 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
1018 "0409 Cannot create debugfs "
1019 "discovery_trace\n");
1020 goto debug_failed;
1021 }
1022 snprintf(name, sizeof(name), "nodelist");
1023 vport->debug_nodelist =
1024 debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
1025 vport->vport_debugfs_root,
1026 vport, &lpfc_debugfs_op_nodelist);
1027 if (!vport->debug_nodelist) {
1028 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
1029 "0409 Cant create debugfs nodelist");
1030 goto debug_failed;
1031 }
1032 debug_failed:
1033 return;
1034 #endif
1035 }
1036
1037
1038 inline void
1039 lpfc_debugfs_terminate(struct lpfc_vport *vport)
1040 {
1041 #ifdef CONFIG_LPFC_DEBUG_FS
1042 struct lpfc_hba *phba = vport->phba;
1043
1044 if (vport->disc_trc) {
1045 kfree(vport->disc_trc);
1046 vport->disc_trc = NULL;
1047 }
1048 if (vport->debug_disc_trc) {
1049 debugfs_remove(vport->debug_disc_trc); /* discovery_trace */
1050 vport->debug_disc_trc = NULL;
1051 }
1052 if (vport->debug_nodelist) {
1053 debugfs_remove(vport->debug_nodelist); /* nodelist */
1054 vport->debug_nodelist = NULL;
1055 }
1056
1057 if (vport->vport_debugfs_root) {
1058 debugfs_remove(vport->vport_debugfs_root); /* vportX */
1059 vport->vport_debugfs_root = NULL;
1060 atomic_dec(&phba->debugfs_vport_count);
1061 }
1062 if (atomic_read(&phba->debugfs_vport_count) == 0) {
1063
1064 if (phba->debug_hbqinfo) {
1065 debugfs_remove(phba->debug_hbqinfo); /* hbqinfo */
1066 phba->debug_hbqinfo = NULL;
1067 }
1068 if (phba->debug_dumpHBASlim) {
1069 debugfs_remove(phba->debug_dumpHBASlim); /* HBASlim */
1070 phba->debug_dumpHBASlim = NULL;
1071 }
1072 if (phba->debug_dumpHostSlim) {
1073 debugfs_remove(phba->debug_dumpHostSlim); /* HostSlim */
1074 phba->debug_dumpHostSlim = NULL;
1075 }
1076 if (phba->slow_ring_trc) {
1077 kfree(phba->slow_ring_trc);
1078 phba->slow_ring_trc = NULL;
1079 }
1080 if (phba->debug_slow_ring_trc) {
1081 /* slow_ring_trace */
1082 debugfs_remove(phba->debug_slow_ring_trc);
1083 phba->debug_slow_ring_trc = NULL;
1084 }
1085
1086 if (phba->hba_debugfs_root) {
1087 debugfs_remove(phba->hba_debugfs_root); /* lpfcX */
1088 phba->hba_debugfs_root = NULL;
1089 atomic_dec(&lpfc_debugfs_hba_count);
1090 }
1091
1092 if (atomic_read(&lpfc_debugfs_hba_count) == 0) {
1093 debugfs_remove(lpfc_debugfs_root); /* lpfc */
1094 lpfc_debugfs_root = NULL;
1095 }
1096 }
1097 #endif
1098 return;
1099 }
1100
1101
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