Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/lmb-2.6
[linux-2.6] / drivers / scsi / lpfc / lpfc_debugfs.c
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