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[SCSI] zfcp: simplify zfcp_dbf_timestamp()
[linux-2.6/x86.git] / drivers / s390 / scsi / zfcp_dbf.c
blobedd93533db4091db2ecef82cc8fa60ced8efc300
1 /*
2 * This file is part of the zfcp device driver for
3 * FCP adapters for IBM System z9 and zSeries.
4 *
5 * (C) Copyright IBM Corp. 2002, 2006
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2, or (at your option)
10 * any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 */
21
22 #include <linux/ctype.h>
23 #include <asm/debug.h>
24 #include "zfcp_ext.h"
25
26 static u32 dbfsize = 4;
27
28 module_param(dbfsize, uint, 0400);
29 MODULE_PARM_DESC(dbfsize,
30 "number of pages for each debug feature area (default 4)");
31
32 #define ZFCP_LOG_AREA ZFCP_LOG_AREA_OTHER
33
34 static void zfcp_dbf_hexdump(debug_info_t *dbf, void *to, int to_len,
35 int level, char *from, int from_len)
36 {
37 int offset;
38 struct zfcp_dbf_dump *dump = to;
39 int room = to_len - sizeof(*dump);
40
41 for (offset = 0; offset < from_len; offset += dump->size) {
42 memset(to, 0, to_len);
43 strncpy(dump->tag, "dump", ZFCP_DBF_TAG_SIZE);
44 dump->total_size = from_len;
45 dump->offset = offset;
46 dump->size = min(from_len - offset, room);
47 memcpy(dump->data, from + offset, dump->size);
48 debug_event(dbf, level, dump, dump->size);
49 }
50 }
51
52 /* FIXME: this duplicate this code in s390 debug feature */
53 static void zfcp_dbf_timestamp(unsigned long long stck, struct timespec *time)
54 {
55 unsigned long long sec;
56
57 stck -= 0x8126d60e46000000LL - (0x3c26700LL * 1000000 * 4096);
58 sec = stck >> 12;
59 do_div(sec, 1000000);
60 time->tv_sec = sec;
61 stck -= (sec * 1000000) << 12;
62 time->tv_nsec = ((stck * 1000) >> 12);
63 }
64
65 static int zfcp_dbf_tag(char *out_buf, const char *label, const char *tag)
66 {
67 int len = 0, i;
68
69 len += sprintf(out_buf + len, "%-24s", label);
70 for (i = 0; i < ZFCP_DBF_TAG_SIZE; i++)
71 len += sprintf(out_buf + len, "%c", tag[i]);
72 len += sprintf(out_buf + len, "\n");
73
74 return len;
75 }
76
77 static int
78 zfcp_dbf_view(char *out_buf, const char *label, const char *format, ...)
79 {
80 va_list arg;
81 int len = 0;
82
83 len += sprintf(out_buf + len, "%-24s", label);
84 va_start(arg, format);
85 len += vsprintf(out_buf + len, format, arg);
86 va_end(arg);
87 len += sprintf(out_buf + len, "\n");
88
89 return len;
90 }
91
92 static void zfcp_dbf_outs(char **buf, const char *s1, const char *s2)
93 {
94 *buf += sprintf(*buf, "%-24s%s\n", s1, s2);
95 }
96
97 static void zfcp_dbf_out(char **buf, const char *s, const char *format, ...)
98 {
99 va_list arg;
100
101 *buf += sprintf(*buf, "%-24s", s);
102 va_start(arg, format);
103 *buf += vsprintf(*buf, format, arg);
104 va_end(arg);
105 *buf += sprintf(*buf, "\n");
106 }
107
108 static int
109 zfcp_dbf_view_dump(char *out_buf, const char *label,
110 char *buffer, int buflen, int offset, int total_size)
111 {
112 int len = 0;
113
114 if (offset == 0)
115 len += sprintf(out_buf + len, "%-24s ", label);
116
117 while (buflen--) {
118 if (offset > 0) {
119 if ((offset % 32) == 0)
120 len += sprintf(out_buf + len, "\n%-24c ", ' ');
121 else if ((offset % 4) == 0)
122 len += sprintf(out_buf + len, " ");
123 }
124 len += sprintf(out_buf + len, "%02x", *buffer++);
125 if (++offset == total_size) {
126 len += sprintf(out_buf + len, "\n");
127 break;
128 }
129 }
130
131 if (total_size == 0)
132 len += sprintf(out_buf + len, "\n");
133
134 return len;
135 }
136
137 static int
138 zfcp_dbf_view_header(debug_info_t * id, struct debug_view *view, int area,
139 debug_entry_t * entry, char *out_buf)
140 {
141 struct zfcp_dbf_dump *dump = (struct zfcp_dbf_dump *)DEBUG_DATA(entry);
142 int len = 0;
143 struct timespec t;
144
145 if (strncmp(dump->tag, "dump", ZFCP_DBF_TAG_SIZE) != 0) {
146 zfcp_dbf_timestamp(entry->id.stck, &t);
147 len += zfcp_dbf_view(out_buf + len, "timestamp", "%011lu:%06lu",
148 t.tv_sec, t.tv_nsec);
149 len += zfcp_dbf_view(out_buf + len, "cpu", "%02i",
150 entry->id.fields.cpuid);
151 } else {
152 len += zfcp_dbf_view_dump(out_buf + len, NULL,
153 dump->data,
154 dump->size,
155 dump->offset, dump->total_size);
156 if ((dump->offset + dump->size) == dump->total_size)
157 len += sprintf(out_buf + len, "\n");
158 }
159
160 return len;
161 }
162
163 void zfcp_hba_dbf_event_fsf_response(struct zfcp_fsf_req *fsf_req)
164 {
165 struct zfcp_adapter *adapter = fsf_req->adapter;
166 struct fsf_qtcb *qtcb = fsf_req->qtcb;
167 union fsf_prot_status_qual *prot_status_qual =
168 &qtcb->prefix.prot_status_qual;
169 union fsf_status_qual *fsf_status_qual = &qtcb->header.fsf_status_qual;
170 struct scsi_cmnd *scsi_cmnd;
171 struct zfcp_port *port;
172 struct zfcp_unit *unit;
173 struct zfcp_send_els *send_els;
174 struct zfcp_hba_dbf_record *rec = &adapter->hba_dbf_buf;
175 struct zfcp_hba_dbf_record_response *response = &rec->type.response;
176 int level;
177 unsigned long flags;
178
179 spin_lock_irqsave(&adapter->hba_dbf_lock, flags);
180 memset(rec, 0, sizeof(struct zfcp_hba_dbf_record));
181 strncpy(rec->tag, "resp", ZFCP_DBF_TAG_SIZE);
182
183 if ((qtcb->prefix.prot_status != FSF_PROT_GOOD) &&
184 (qtcb->prefix.prot_status != FSF_PROT_FSF_STATUS_PRESENTED)) {
185 strncpy(rec->tag2, "perr", ZFCP_DBF_TAG_SIZE);
186 level = 1;
187 } else if (qtcb->header.fsf_status != FSF_GOOD) {
188 strncpy(rec->tag2, "ferr", ZFCP_DBF_TAG_SIZE);
189 level = 1;
190 } else if ((fsf_req->fsf_command == FSF_QTCB_OPEN_PORT_WITH_DID) ||
191 (fsf_req->fsf_command == FSF_QTCB_OPEN_LUN)) {
192 strncpy(rec->tag2, "open", ZFCP_DBF_TAG_SIZE);
193 level = 4;
194 } else if (qtcb->header.log_length) {
195 strncpy(rec->tag2, "qtcb", ZFCP_DBF_TAG_SIZE);
196 level = 5;
197 } else {
198 strncpy(rec->tag2, "norm", ZFCP_DBF_TAG_SIZE);
199 level = 6;
200 }
201
202 response->fsf_command = fsf_req->fsf_command;
203 response->fsf_reqid = (unsigned long)fsf_req;
204 response->fsf_seqno = fsf_req->seq_no;
205 response->fsf_issued = fsf_req->issued;
206 response->fsf_prot_status = qtcb->prefix.prot_status;
207 response->fsf_status = qtcb->header.fsf_status;
208 memcpy(response->fsf_prot_status_qual,
209 prot_status_qual, FSF_PROT_STATUS_QUAL_SIZE);
210 memcpy(response->fsf_status_qual,
211 fsf_status_qual, FSF_STATUS_QUALIFIER_SIZE);
212 response->fsf_req_status = fsf_req->status;
213 response->sbal_first = fsf_req->sbal_first;
214 response->sbal_curr = fsf_req->sbal_curr;
215 response->sbal_last = fsf_req->sbal_last;
216 response->pool = fsf_req->pool != NULL;
217 response->erp_action = (unsigned long)fsf_req->erp_action;
218
219 switch (fsf_req->fsf_command) {
220 case FSF_QTCB_FCP_CMND:
221 if (fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
222 break;
223 scsi_cmnd = (struct scsi_cmnd *)fsf_req->data;
224 if (scsi_cmnd != NULL) {
225 response->data.send_fcp.scsi_cmnd
226 = (unsigned long)scsi_cmnd;
227 response->data.send_fcp.scsi_serial
228 = scsi_cmnd->serial_number;
229 }
230 break;
231
232 case FSF_QTCB_OPEN_PORT_WITH_DID:
233 case FSF_QTCB_CLOSE_PORT:
234 case FSF_QTCB_CLOSE_PHYSICAL_PORT:
235 port = (struct zfcp_port *)fsf_req->data;
236 response->data.port.wwpn = port->wwpn;
237 response->data.port.d_id = port->d_id;
238 response->data.port.port_handle = qtcb->header.port_handle;
239 break;
240
241 case FSF_QTCB_OPEN_LUN:
242 case FSF_QTCB_CLOSE_LUN:
243 unit = (struct zfcp_unit *)fsf_req->data;
244 port = unit->port;
245 response->data.unit.wwpn = port->wwpn;
246 response->data.unit.fcp_lun = unit->fcp_lun;
247 response->data.unit.port_handle = qtcb->header.port_handle;
248 response->data.unit.lun_handle = qtcb->header.lun_handle;
249 break;
250
251 case FSF_QTCB_SEND_ELS:
252 send_els = (struct zfcp_send_els *)fsf_req->data;
253 response->data.send_els.d_id = qtcb->bottom.support.d_id;
254 response->data.send_els.ls_code = send_els->ls_code >> 24;
255 break;
256
257 case FSF_QTCB_ABORT_FCP_CMND:
258 case FSF_QTCB_SEND_GENERIC:
259 case FSF_QTCB_EXCHANGE_CONFIG_DATA:
260 case FSF_QTCB_EXCHANGE_PORT_DATA:
261 case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
262 case FSF_QTCB_UPLOAD_CONTROL_FILE:
263 break;
264 }
265
266 debug_event(adapter->hba_dbf, level,
267 rec, sizeof(struct zfcp_hba_dbf_record));
268
269 /* have fcp channel microcode fixed to use as little as possible */
270 if (fsf_req->fsf_command != FSF_QTCB_FCP_CMND) {
271 /* adjust length skipping trailing zeros */
272 char *buf = (char *)qtcb + qtcb->header.log_start;
273 int len = qtcb->header.log_length;
274 for (; len && !buf[len - 1]; len--);
275 zfcp_dbf_hexdump(adapter->hba_dbf, rec, sizeof(*rec), level,
276 buf, len);
277 }
278
279 spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags);
280 }
281
282 void
283 zfcp_hba_dbf_event_fsf_unsol(const char *tag, struct zfcp_adapter *adapter,
284 struct fsf_status_read_buffer *status_buffer)
285 {
286 struct zfcp_hba_dbf_record *rec = &adapter->hba_dbf_buf;
287 unsigned long flags;
288
289 spin_lock_irqsave(&adapter->hba_dbf_lock, flags);
290 memset(rec, 0, sizeof(struct zfcp_hba_dbf_record));
291 strncpy(rec->tag, "stat", ZFCP_DBF_TAG_SIZE);
292 strncpy(rec->tag2, tag, ZFCP_DBF_TAG_SIZE);
293
294 rec->type.status.failed = adapter->status_read_failed;
295 if (status_buffer != NULL) {
296 rec->type.status.status_type = status_buffer->status_type;
297 rec->type.status.status_subtype = status_buffer->status_subtype;
298 memcpy(&rec->type.status.queue_designator,
299 &status_buffer->queue_designator,
300 sizeof(struct fsf_queue_designator));
301
302 switch (status_buffer->status_type) {
303 case FSF_STATUS_READ_SENSE_DATA_AVAIL:
304 rec->type.status.payload_size =
305 ZFCP_DBF_UNSOL_PAYLOAD_SENSE_DATA_AVAIL;
306 break;
307
308 case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
309 rec->type.status.payload_size =
310 ZFCP_DBF_UNSOL_PAYLOAD_BIT_ERROR_THRESHOLD;
311 break;
312
313 case FSF_STATUS_READ_LINK_DOWN:
314 switch (status_buffer->status_subtype) {
315 case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
316 case FSF_STATUS_READ_SUB_FDISC_FAILED:
317 rec->type.status.payload_size =
318 sizeof(struct fsf_link_down_info);
319 }
320 break;
321
322 case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
323 rec->type.status.payload_size =
324 ZFCP_DBF_UNSOL_PAYLOAD_FEATURE_UPDATE_ALERT;
325 break;
326 }
327 memcpy(&rec->type.status.payload,
328 &status_buffer->payload, rec->type.status.payload_size);
329 }
330
331 debug_event(adapter->hba_dbf, 2,
332 rec, sizeof(struct zfcp_hba_dbf_record));
333 spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags);
334 }
335
336 void
337 zfcp_hba_dbf_event_qdio(struct zfcp_adapter *adapter, unsigned int status,
338 unsigned int qdio_error, unsigned int siga_error,
339 int sbal_index, int sbal_count)
340 {
341 struct zfcp_hba_dbf_record *rec = &adapter->hba_dbf_buf;
342 unsigned long flags;
343
344 spin_lock_irqsave(&adapter->hba_dbf_lock, flags);
345 memset(rec, 0, sizeof(struct zfcp_hba_dbf_record));
346 strncpy(rec->tag, "qdio", ZFCP_DBF_TAG_SIZE);
347 rec->type.qdio.status = status;
348 rec->type.qdio.qdio_error = qdio_error;
349 rec->type.qdio.siga_error = siga_error;
350 rec->type.qdio.sbal_index = sbal_index;
351 rec->type.qdio.sbal_count = sbal_count;
352 debug_event(adapter->hba_dbf, 0,
353 rec, sizeof(struct zfcp_hba_dbf_record));
354 spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags);
355 }
356
357 static int
358 zfcp_hba_dbf_view_response(char *out_buf,
359 struct zfcp_hba_dbf_record_response *rec)
360 {
361 int len = 0;
362 struct timespec t;
363
364 len += zfcp_dbf_view(out_buf + len, "fsf_command", "0x%08x",
365 rec->fsf_command);
366 len += zfcp_dbf_view(out_buf + len, "fsf_reqid", "0x%0Lx",
367 rec->fsf_reqid);
368 len += zfcp_dbf_view(out_buf + len, "fsf_seqno", "0x%08x",
369 rec->fsf_seqno);
370 zfcp_dbf_timestamp(rec->fsf_issued, &t);
371 len += zfcp_dbf_view(out_buf + len, "fsf_issued", "%011lu:%06lu",
372 t.tv_sec, t.tv_nsec);
373 len += zfcp_dbf_view(out_buf + len, "fsf_prot_status", "0x%08x",
374 rec->fsf_prot_status);
375 len += zfcp_dbf_view(out_buf + len, "fsf_status", "0x%08x",
376 rec->fsf_status);
377 len += zfcp_dbf_view_dump(out_buf + len, "fsf_prot_status_qual",
378 rec->fsf_prot_status_qual,
379 FSF_PROT_STATUS_QUAL_SIZE,
380 0, FSF_PROT_STATUS_QUAL_SIZE);
381 len += zfcp_dbf_view_dump(out_buf + len, "fsf_status_qual",
382 rec->fsf_status_qual,
383 FSF_STATUS_QUALIFIER_SIZE,
384 0, FSF_STATUS_QUALIFIER_SIZE);
385 len += zfcp_dbf_view(out_buf + len, "fsf_req_status", "0x%08x",
386 rec->fsf_req_status);
387 len += zfcp_dbf_view(out_buf + len, "sbal_first", "0x%02x",
388 rec->sbal_first);
389 len += zfcp_dbf_view(out_buf + len, "sbal_curr", "0x%02x",
390 rec->sbal_curr);
391 len += zfcp_dbf_view(out_buf + len, "sbal_last", "0x%02x",
392 rec->sbal_last);
393 len += zfcp_dbf_view(out_buf + len, "pool", "0x%02x", rec->pool);
394
395 switch (rec->fsf_command) {
396 case FSF_QTCB_FCP_CMND:
397 if (rec->fsf_req_status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
398 break;
399 len += zfcp_dbf_view(out_buf + len, "scsi_cmnd", "0x%0Lx",
400 rec->data.send_fcp.scsi_cmnd);
401 len += zfcp_dbf_view(out_buf + len, "scsi_serial", "0x%016Lx",
402 rec->data.send_fcp.scsi_serial);
403 break;
404
405 case FSF_QTCB_OPEN_PORT_WITH_DID:
406 case FSF_QTCB_CLOSE_PORT:
407 case FSF_QTCB_CLOSE_PHYSICAL_PORT:
408 len += zfcp_dbf_view(out_buf + len, "wwpn", "0x%016Lx",
409 rec->data.port.wwpn);
410 len += zfcp_dbf_view(out_buf + len, "d_id", "0x%06x",
411 rec->data.port.d_id);
412 len += zfcp_dbf_view(out_buf + len, "port_handle", "0x%08x",
413 rec->data.port.port_handle);
414 break;
415
416 case FSF_QTCB_OPEN_LUN:
417 case FSF_QTCB_CLOSE_LUN:
418 len += zfcp_dbf_view(out_buf + len, "wwpn", "0x%016Lx",
419 rec->data.unit.wwpn);
420 len += zfcp_dbf_view(out_buf + len, "fcp_lun", "0x%016Lx",
421 rec->data.unit.fcp_lun);
422 len += zfcp_dbf_view(out_buf + len, "port_handle", "0x%08x",
423 rec->data.unit.port_handle);
424 len += zfcp_dbf_view(out_buf + len, "lun_handle", "0x%08x",
425 rec->data.unit.lun_handle);
426 break;
427
428 case FSF_QTCB_SEND_ELS:
429 len += zfcp_dbf_view(out_buf + len, "d_id", "0x%06x",
430 rec->data.send_els.d_id);
431 len += zfcp_dbf_view(out_buf + len, "ls_code", "0x%02x",
432 rec->data.send_els.ls_code);
433 break;
434
435 case FSF_QTCB_ABORT_FCP_CMND:
436 case FSF_QTCB_SEND_GENERIC:
437 case FSF_QTCB_EXCHANGE_CONFIG_DATA:
438 case FSF_QTCB_EXCHANGE_PORT_DATA:
439 case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
440 case FSF_QTCB_UPLOAD_CONTROL_FILE:
441 break;
442 }
443
444 return len;
445 }
446
447 static int
448 zfcp_hba_dbf_view_status(char *out_buf, struct zfcp_hba_dbf_record_status *rec)
449 {
450 int len = 0;
451
452 len += zfcp_dbf_view(out_buf + len, "failed", "0x%02x", rec->failed);
453 len += zfcp_dbf_view(out_buf + len, "status_type", "0x%08x",
454 rec->status_type);
455 len += zfcp_dbf_view(out_buf + len, "status_subtype", "0x%08x",
456 rec->status_subtype);
457 len += zfcp_dbf_view_dump(out_buf + len, "queue_designator",
458 (char *)&rec->queue_designator,
459 sizeof(struct fsf_queue_designator),
460 0, sizeof(struct fsf_queue_designator));
461 len += zfcp_dbf_view_dump(out_buf + len, "payload",
462 (char *)&rec->payload,
463 rec->payload_size, 0, rec->payload_size);
464
465 return len;
466 }
467
468 static int
469 zfcp_hba_dbf_view_qdio(char *out_buf, struct zfcp_hba_dbf_record_qdio *rec)
470 {
471 int len = 0;
472
473 len += zfcp_dbf_view(out_buf + len, "status", "0x%08x", rec->status);
474 len += zfcp_dbf_view(out_buf + len, "qdio_error", "0x%08x",
475 rec->qdio_error);
476 len += zfcp_dbf_view(out_buf + len, "siga_error", "0x%08x",
477 rec->siga_error);
478 len += zfcp_dbf_view(out_buf + len, "sbal_index", "0x%02x",
479 rec->sbal_index);
480 len += zfcp_dbf_view(out_buf + len, "sbal_count", "0x%02x",
481 rec->sbal_count);
482
483 return len;
484 }
485
486 static int
487 zfcp_hba_dbf_view_format(debug_info_t * id, struct debug_view *view,
488 char *out_buf, const char *in_buf)
489 {
490 struct zfcp_hba_dbf_record *rec = (struct zfcp_hba_dbf_record *)in_buf;
491 int len = 0;
492
493 if (strncmp(rec->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
494 return 0;
495
496 len += zfcp_dbf_tag(out_buf + len, "tag", rec->tag);
497 if (isalpha(rec->tag2[0]))
498 len += zfcp_dbf_tag(out_buf + len, "tag2", rec->tag2);
499 if (strncmp(rec->tag, "resp", ZFCP_DBF_TAG_SIZE) == 0)
500 len += zfcp_hba_dbf_view_response(out_buf + len,
501 &rec->type.response);
502 else if (strncmp(rec->tag, "stat", ZFCP_DBF_TAG_SIZE) == 0)
503 len += zfcp_hba_dbf_view_status(out_buf + len,
504 &rec->type.status);
505 else if (strncmp(rec->tag, "qdio", ZFCP_DBF_TAG_SIZE) == 0)
506 len += zfcp_hba_dbf_view_qdio(out_buf + len, &rec->type.qdio);
507
508 len += sprintf(out_buf + len, "\n");
509
510 return len;
511 }
512
513 static struct debug_view zfcp_hba_dbf_view = {
514 "structured",
515 NULL,
516 &zfcp_dbf_view_header,
517 &zfcp_hba_dbf_view_format,
518 NULL,
519 NULL
520 };
521
522 static const char *zfcp_rec_dbf_tags[] = {
523 [ZFCP_REC_DBF_ID_THREAD] = "thread",
524 [ZFCP_REC_DBF_ID_TARGET] = "target",
525 [ZFCP_REC_DBF_ID_TRIGGER] = "trigger",
526 [ZFCP_REC_DBF_ID_ACTION] = "action",
527 };
528
529 static const char *zfcp_rec_dbf_ids[] = {
530 [1] = "new",
531 [2] = "ready",
532 [3] = "kill",
533 [4] = "down sleep",
534 [5] = "down wakeup",
535 [6] = "down sleep ecd",
536 [7] = "down wakeup ecd",
537 [8] = "down sleep epd",
538 [9] = "down wakeup epd",
539 [10] = "online",
540 [11] = "operational",
541 [12] = "scsi slave destroy",
542 [13] = "propagate failed adapter",
543 [14] = "propagate failed port",
544 [15] = "block adapter",
545 [16] = "unblock adapter",
546 [17] = "block port",
547 [18] = "unblock port",
548 [19] = "block unit",
549 [20] = "unblock unit",
550 [21] = "unit recovery failed",
551 [22] = "port recovery failed",
552 [23] = "adapter recovery failed",
553 [24] = "qdio queues down",
554 [25] = "p2p failed",
555 [26] = "nameserver lookup failed",
556 [27] = "nameserver port failed",
557 [28] = "link up",
558 [29] = "link down",
559 [30] = "link up status read",
560 [31] = "open port failed",
561 [32] = "open port failed",
562 [33] = "close port",
563 [34] = "open unit failed",
564 [35] = "exclusive open unit failed",
565 [36] = "shared open unit failed",
566 [37] = "link down",
567 [38] = "link down status read no link",
568 [39] = "link down status read fdisc login",
569 [40] = "link down status read firmware update",
570 [41] = "link down status read unknown reason",
571 [42] = "link down ecd incomplete",
572 [43] = "link down epd incomplete",
573 [44] = "sysfs adapter recovery",
574 [45] = "sysfs port recovery",
575 [46] = "sysfs unit recovery",
576 [47] = "port boxed abort",
577 [48] = "unit boxed abort",
578 [49] = "port boxed ct",
579 [50] = "port boxed close physical",
580 [51] = "port boxed open unit",
581 [52] = "port boxed close unit",
582 [53] = "port boxed fcp",
583 [54] = "unit boxed fcp",
584 [55] = "port access denied ct",
585 [56] = "port access denied els",
586 [57] = "port access denied open port",
587 [58] = "port access denied close physical",
588 [59] = "unit access denied open unit",
589 [60] = "shared unit access denied open unit",
590 [61] = "unit access denied fcp",
591 [62] = "request timeout",
592 [63] = "adisc link test reject or timeout",
593 [64] = "adisc link test d_id changed",
594 [65] = "adisc link test failed",
595 [66] = "recovery out of memory",
596 [67] = "adapter recovery repeated after state change",
597 [68] = "port recovery repeated after state change",
598 [69] = "unit recovery repeated after state change",
599 [70] = "port recovery follow-up after successful adapter recovery",
600 [71] = "adapter recovery escalation after failed adapter recovery",
601 [72] = "port recovery follow-up after successful physical port "
602 "recovery",
603 [73] = "adapter recovery escalation after failed physical port "
604 "recovery",
605 [74] = "unit recovery follow-up after successful port recovery",
606 [75] = "physical port recovery escalation after failed port "
607 "recovery",
608 [76] = "port recovery escalation after failed unit recovery",
609 [77] = "recovery opening nameserver port",
610 [78] = "duplicate request id",
611 [79] = "link down",
612 [80] = "exclusive read-only unit access unsupported",
613 [81] = "shared read-write unit access unsupported",
614 [82] = "incoming rscn",
615 [83] = "incoming plogi",
616 [84] = "incoming logo",
617 [85] = "online",
618 [86] = "offline",
619 [87] = "ccw device gone",
620 [88] = "ccw device no path",
621 [89] = "ccw device operational",
622 [90] = "ccw device shutdown",
623 [91] = "sysfs port addition",
624 [92] = "sysfs port removal",
625 [93] = "sysfs adapter recovery",
626 [94] = "sysfs unit addition",
627 [95] = "sysfs unit removal",
628 [96] = "sysfs port recovery",
629 [97] = "sysfs unit recovery",
630 [98] = "sequence number mismatch",
631 [99] = "link up",
632 [100] = "error state",
633 [101] = "status read physical port closed",
634 [102] = "link up status read",
635 [103] = "too many failed status read buffers",
636 [104] = "port handle not valid abort",
637 [105] = "lun handle not valid abort",
638 [106] = "port handle not valid ct",
639 [107] = "port handle not valid close port",
640 [108] = "port handle not valid close physical port",
641 [109] = "port handle not valid open unit",
642 [110] = "port handle not valid close unit",
643 [111] = "lun handle not valid close unit",
644 [112] = "port handle not valid fcp",
645 [113] = "lun handle not valid fcp",
646 [114] = "handle mismatch fcp",
647 [115] = "lun not valid fcp",
648 [116] = "qdio send failed",
649 [117] = "version mismatch",
650 [118] = "incompatible qtcb type",
651 [119] = "unknown protocol status",
652 [120] = "unknown fsf command",
653 [121] = "no recommendation for status qualifier",
654 [122] = "status read physical port closed in error",
655 [123] = "fc service class not supported ct",
656 [124] = "fc service class not supported els",
657 [125] = "need newer zfcp",
658 [126] = "need newer microcode",
659 [127] = "arbitrated loop not supported",
660 [128] = "unknown topology",
661 [129] = "qtcb size mismatch",
662 [130] = "unknown fsf status ecd",
663 [131] = "fcp request too big",
664 [132] = "fc service class not supported fcp",
665 [133] = "data direction not valid fcp",
666 [134] = "command length not valid fcp",
667 [135] = "status read act update",
668 [136] = "status read cfdc update",
669 [137] = "hbaapi port open",
670 [138] = "hbaapi unit open",
671 [139] = "hbaapi unit shutdown",
672 [140] = "qdio error",
673 [141] = "scsi host reset",
674 [142] = "dismissing fsf request for recovery action",
675 [143] = "recovery action timed out",
676 [144] = "recovery action gone",
677 [145] = "recovery action being processed",
678 [146] = "recovery action ready for next step",
679 };
680
681 static int zfcp_rec_dbf_view_format(debug_info_t *id, struct debug_view *view,
682 char *buf, const char *_rec)
683 {
684 struct zfcp_rec_dbf_record *r = (struct zfcp_rec_dbf_record *)_rec;
685 char *p = buf;
686
687 zfcp_dbf_outs(&p, "tag", zfcp_rec_dbf_tags[r->id]);
688 zfcp_dbf_outs(&p, "hint", zfcp_rec_dbf_ids[r->id2]);
689 zfcp_dbf_out(&p, "id", "%d", r->id2);
690 switch (r->id) {
691 case ZFCP_REC_DBF_ID_THREAD:
692 zfcp_dbf_out(&p, "sema", "%d", r->u.thread.sema);
693 zfcp_dbf_out(&p, "total", "%d", r->u.thread.total);
694 zfcp_dbf_out(&p, "ready", "%d", r->u.thread.ready);
695 zfcp_dbf_out(&p, "running", "%d", r->u.thread.running);
696 break;
697 case ZFCP_REC_DBF_ID_TARGET:
698 zfcp_dbf_out(&p, "reference", "0x%016Lx", r->u.target.ref);
699 zfcp_dbf_out(&p, "status", "0x%08x", r->u.target.status);
700 zfcp_dbf_out(&p, "erp_count", "%d", r->u.target.erp_count);
701 zfcp_dbf_out(&p, "d_id", "0x%06x", r->u.target.d_id);
702 zfcp_dbf_out(&p, "wwpn", "0x%016Lx", r->u.target.wwpn);
703 zfcp_dbf_out(&p, "fcp_lun", "0x%016Lx", r->u.target.fcp_lun);
704 break;
705 case ZFCP_REC_DBF_ID_TRIGGER:
706 zfcp_dbf_out(&p, "reference", "0x%016Lx", r->u.trigger.ref);
707 zfcp_dbf_out(&p, "erp_action", "0x%016Lx", r->u.trigger.action);
708 zfcp_dbf_out(&p, "requested", "%d", r->u.trigger.want);
709 zfcp_dbf_out(&p, "executed", "%d", r->u.trigger.need);
710 zfcp_dbf_out(&p, "wwpn", "0x%016Lx", r->u.trigger.wwpn);
711 zfcp_dbf_out(&p, "fcp_lun", "0x%016Lx", r->u.trigger.fcp_lun);
712 zfcp_dbf_out(&p, "adapter_status", "0x%08x", r->u.trigger.as);
713 zfcp_dbf_out(&p, "port_status", "0x%08x", r->u.trigger.ps);
714 zfcp_dbf_out(&p, "unit_status", "0x%08x", r->u.trigger.us);
715 break;
716 case ZFCP_REC_DBF_ID_ACTION:
717 zfcp_dbf_out(&p, "erp_action", "0x%016Lx", r->u.action.action);
718 zfcp_dbf_out(&p, "fsf_req", "0x%016Lx", r->u.action.fsf_req);
719 zfcp_dbf_out(&p, "status", "0x%08Lx", r->u.action.status);
720 zfcp_dbf_out(&p, "step", "0x%08Lx", r->u.action.step);
721 break;
722 }
723 sprintf(p, "\n");
724 return (p - buf) + 1;
725 }
726
727 static struct debug_view zfcp_rec_dbf_view = {
728 "structured",
729 NULL,
730 &zfcp_dbf_view_header,
731 &zfcp_rec_dbf_view_format,
732 NULL,
733 NULL
734 };
735
736 /**
737 * zfcp_rec_dbf_event_thread - trace event related to recovery thread operation
738 * @id2: identifier for event
739 * @adapter: adapter
740 * @lock: non-zero value indicates that erp_lock has not yet been acquired
741 */
742 void zfcp_rec_dbf_event_thread(u8 id2, struct zfcp_adapter *adapter, int lock)
743 {
744 struct zfcp_rec_dbf_record *r = &adapter->rec_dbf_buf;
745 unsigned long flags = 0;
746 struct list_head *entry;
747 unsigned ready = 0, running = 0, total;
748
749 if (lock)
750 read_lock_irqsave(&adapter->erp_lock, flags);
751 list_for_each(entry, &adapter->erp_ready_head)
752 ready++;
753 list_for_each(entry, &adapter->erp_running_head)
754 running++;
755 total = adapter->erp_total_count;
756 if (lock)
757 read_unlock_irqrestore(&adapter->erp_lock, flags);
758
759 spin_lock_irqsave(&adapter->rec_dbf_lock, flags);
760 memset(r, 0, sizeof(*r));
761 r->id = ZFCP_REC_DBF_ID_THREAD;
762 r->id2 = id2;
763 r->u.thread.sema = atomic_read(&adapter->erp_ready_sem.count);
764 r->u.thread.total = total;
765 r->u.thread.ready = ready;
766 r->u.thread.running = running;
767 debug_event(adapter->rec_dbf, 5, r, sizeof(*r));
768 spin_unlock_irqrestore(&adapter->rec_dbf_lock, flags);
769 }
770
771 static void zfcp_rec_dbf_event_target(u8 id2, u64 ref,
772 struct zfcp_adapter *adapter,
773 atomic_t *status, atomic_t *erp_count,
774 u64 wwpn, u32 d_id, u64 fcp_lun)
775 {
776 struct zfcp_rec_dbf_record *r = &adapter->rec_dbf_buf;
777 unsigned long flags;
778
779 spin_lock_irqsave(&adapter->rec_dbf_lock, flags);
780 memset(r, 0, sizeof(*r));
781 r->id = ZFCP_REC_DBF_ID_TARGET;
782 r->id2 = id2;
783 r->u.target.ref = ref;
784 r->u.target.status = atomic_read(status);
785 r->u.target.wwpn = wwpn;
786 r->u.target.d_id = d_id;
787 r->u.target.fcp_lun = fcp_lun;
788 r->u.target.erp_count = atomic_read(erp_count);
789 debug_event(adapter->rec_dbf, 3, r, sizeof(*r));
790 spin_unlock_irqrestore(&adapter->rec_dbf_lock, flags);
791 }
792
793 /**
794 * zfcp_rec_dbf_event_adapter - trace event for adapter state change
795 * @id: identifier for trigger of state change
796 * @ref: additional reference (e.g. request)
797 * @adapter: adapter
798 */
799 void zfcp_rec_dbf_event_adapter(u8 id, u64 ref, struct zfcp_adapter *adapter)
800 {
801 zfcp_rec_dbf_event_target(id, ref, adapter, &adapter->status,
802 &adapter->erp_counter, 0, 0, 0);
803 }
804
805 /**
806 * zfcp_rec_dbf_event_port - trace event for port state change
807 * @id: identifier for trigger of state change
808 * @ref: additional reference (e.g. request)
809 * @port: port
810 */
811 void zfcp_rec_dbf_event_port(u8 id, u64 ref, struct zfcp_port *port)
812 {
813 struct zfcp_adapter *adapter = port->adapter;
814
815 zfcp_rec_dbf_event_target(id, ref, adapter, &port->status,
816 &port->erp_counter, port->wwpn, port->d_id,
817 0);
818 }
819
820 /**
821 * zfcp_rec_dbf_event_unit - trace event for unit state change
822 * @id: identifier for trigger of state change
823 * @ref: additional reference (e.g. request)
824 * @unit: unit
825 */
826 void zfcp_rec_dbf_event_unit(u8 id, u64 ref, struct zfcp_unit *unit)
827 {
828 struct zfcp_port *port = unit->port;
829 struct zfcp_adapter *adapter = port->adapter;
830
831 zfcp_rec_dbf_event_target(id, ref, adapter, &unit->status,
832 &unit->erp_counter, port->wwpn, port->d_id,
833 unit->fcp_lun);
834 }
835
836 /**
837 * zfcp_rec_dbf_event_trigger - trace event for triggered error recovery
838 * @id2: identifier for error recovery trigger
839 * @ref: additional reference (e.g. request)
840 * @want: originally requested error recovery action
841 * @need: error recovery action actually initiated
842 * @action: address of error recovery action struct
843 * @adapter: adapter
844 * @port: port
845 * @unit: unit
846 */
847 void zfcp_rec_dbf_event_trigger(u8 id2, u64 ref, u8 want, u8 need, u64 action,
848 struct zfcp_adapter *adapter,
849 struct zfcp_port *port, struct zfcp_unit *unit)
850 {
851 struct zfcp_rec_dbf_record *r = &adapter->rec_dbf_buf;
852 unsigned long flags;
853
854 spin_lock_irqsave(&adapter->rec_dbf_lock, flags);
855 memset(r, 0, sizeof(*r));
856 r->id = ZFCP_REC_DBF_ID_TRIGGER;
857 r->id2 = id2;
858 r->u.trigger.ref = ref;
859 r->u.trigger.want = want;
860 r->u.trigger.need = need;
861 r->u.trigger.action = action;
862 r->u.trigger.as = atomic_read(&adapter->status);
863 if (port) {
864 r->u.trigger.ps = atomic_read(&port->status);
865 r->u.trigger.wwpn = port->wwpn;
866 }
867 if (unit) {
868 r->u.trigger.us = atomic_read(&unit->status);
869 r->u.trigger.fcp_lun = unit->fcp_lun;
870 }
871 debug_event(adapter->rec_dbf, action ? 1 : 4, r, sizeof(*r));
872 spin_unlock_irqrestore(&adapter->rec_dbf_lock, flags);
873 }
874
875 /**
876 * zfcp_rec_dbf_event_action - trace event showing progress of recovery action
877 * @id2: identifier
878 * @erp_action: error recovery action struct pointer
879 */
880 void zfcp_rec_dbf_event_action(u8 id2, struct zfcp_erp_action *erp_action)
881 {
882 struct zfcp_adapter *adapter = erp_action->adapter;
883 struct zfcp_rec_dbf_record *r = &adapter->rec_dbf_buf;
884 unsigned long flags;
885
886 spin_lock_irqsave(&adapter->rec_dbf_lock, flags);
887 memset(r, 0, sizeof(*r));
888 r->id = ZFCP_REC_DBF_ID_ACTION;
889 r->id2 = id2;
890 r->u.action.action = (u64)erp_action;
891 r->u.action.status = erp_action->status;
892 r->u.action.step = erp_action->step;
893 r->u.action.fsf_req = (u64)erp_action->fsf_req;
894 debug_event(adapter->rec_dbf, 4, r, sizeof(*r));
895 spin_unlock_irqrestore(&adapter->rec_dbf_lock, flags);
896 }
897
898 static void
899 _zfcp_san_dbf_event_common_ct(const char *tag, struct zfcp_fsf_req *fsf_req,
900 u32 s_id, u32 d_id, void *buffer, int buflen)
901 {
902 struct zfcp_send_ct *send_ct = (struct zfcp_send_ct *)fsf_req->data;
903 struct zfcp_port *port = send_ct->port;
904 struct zfcp_adapter *adapter = port->adapter;
905 struct ct_hdr *header = (struct ct_hdr *)buffer;
906 struct zfcp_san_dbf_record *rec = &adapter->san_dbf_buf;
907 struct zfcp_san_dbf_record_ct *ct = &rec->type.ct;
908 unsigned long flags;
909
910 spin_lock_irqsave(&adapter->san_dbf_lock, flags);
911 memset(rec, 0, sizeof(struct zfcp_san_dbf_record));
912 strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
913 rec->fsf_reqid = (unsigned long)fsf_req;
914 rec->fsf_seqno = fsf_req->seq_no;
915 rec->s_id = s_id;
916 rec->d_id = d_id;
917 if (strncmp(tag, "octc", ZFCP_DBF_TAG_SIZE) == 0) {
918 ct->type.request.cmd_req_code = header->cmd_rsp_code;
919 ct->type.request.revision = header->revision;
920 ct->type.request.gs_type = header->gs_type;
921 ct->type.request.gs_subtype = header->gs_subtype;
922 ct->type.request.options = header->options;
923 ct->type.request.max_res_size = header->max_res_size;
924 } else if (strncmp(tag, "rctc", ZFCP_DBF_TAG_SIZE) == 0) {
925 ct->type.response.cmd_rsp_code = header->cmd_rsp_code;
926 ct->type.response.revision = header->revision;
927 ct->type.response.reason_code = header->reason_code;
928 ct->type.response.reason_code_expl = header->reason_code_expl;
929 ct->type.response.vendor_unique = header->vendor_unique;
930 }
931 ct->payload_size =
932 min(buflen - (int)sizeof(struct ct_hdr), ZFCP_DBF_CT_PAYLOAD);
933 memcpy(ct->payload, buffer + sizeof(struct ct_hdr), ct->payload_size);
934 debug_event(adapter->san_dbf, 3,
935 rec, sizeof(struct zfcp_san_dbf_record));
936 spin_unlock_irqrestore(&adapter->san_dbf_lock, flags);
937 }
938
939 void zfcp_san_dbf_event_ct_request(struct zfcp_fsf_req *fsf_req)
940 {
941 struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data;
942 struct zfcp_port *port = ct->port;
943 struct zfcp_adapter *adapter = port->adapter;
944
945 _zfcp_san_dbf_event_common_ct("octc", fsf_req,
946 fc_host_port_id(adapter->scsi_host),
947 port->d_id, zfcp_sg_to_address(ct->req),
948 ct->req->length);
949 }
950
951 void zfcp_san_dbf_event_ct_response(struct zfcp_fsf_req *fsf_req)
952 {
953 struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data;
954 struct zfcp_port *port = ct->port;
955 struct zfcp_adapter *adapter = port->adapter;
956
957 _zfcp_san_dbf_event_common_ct("rctc", fsf_req, port->d_id,
958 fc_host_port_id(adapter->scsi_host),
959 zfcp_sg_to_address(ct->resp),
960 ct->resp->length);
961 }
962
963 static void
964 _zfcp_san_dbf_event_common_els(const char *tag, int level,
965 struct zfcp_fsf_req *fsf_req, u32 s_id,
966 u32 d_id, u8 ls_code, void *buffer, int buflen)
967 {
968 struct zfcp_adapter *adapter = fsf_req->adapter;
969 struct zfcp_san_dbf_record *rec = &adapter->san_dbf_buf;
970 unsigned long flags;
971
972 spin_lock_irqsave(&adapter->san_dbf_lock, flags);
973 memset(rec, 0, sizeof(struct zfcp_san_dbf_record));
974 strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
975 rec->fsf_reqid = (unsigned long)fsf_req;
976 rec->fsf_seqno = fsf_req->seq_no;
977 rec->s_id = s_id;
978 rec->d_id = d_id;
979 rec->type.els.ls_code = ls_code;
980 debug_event(adapter->san_dbf, level, rec, sizeof(*rec));
981 zfcp_dbf_hexdump(adapter->san_dbf, rec, sizeof(*rec), level,
982 buffer, min(buflen, ZFCP_DBF_ELS_MAX_PAYLOAD));
983 spin_unlock_irqrestore(&adapter->san_dbf_lock, flags);
984 }
985
986 void zfcp_san_dbf_event_els_request(struct zfcp_fsf_req *fsf_req)
987 {
988 struct zfcp_send_els *els = (struct zfcp_send_els *)fsf_req->data;
989
990 _zfcp_san_dbf_event_common_els("oels", 2, fsf_req,
991 fc_host_port_id(els->adapter->scsi_host),
992 els->d_id,
993 *(u8 *) zfcp_sg_to_address(els->req),
994 zfcp_sg_to_address(els->req),
995 els->req->length);
996 }
997
998 void zfcp_san_dbf_event_els_response(struct zfcp_fsf_req *fsf_req)
999 {
1000 struct zfcp_send_els *els = (struct zfcp_send_els *)fsf_req->data;
1001
1002 _zfcp_san_dbf_event_common_els("rels", 2, fsf_req, els->d_id,
1003 fc_host_port_id(els->adapter->scsi_host),
1004 *(u8 *) zfcp_sg_to_address(els->req),
1005 zfcp_sg_to_address(els->resp),
1006 els->resp->length);
1007 }
1008
1009 void zfcp_san_dbf_event_incoming_els(struct zfcp_fsf_req *fsf_req)
1010 {
1011 struct zfcp_adapter *adapter = fsf_req->adapter;
1012 struct fsf_status_read_buffer *status_buffer =
1013 (struct fsf_status_read_buffer *)fsf_req->data;
1014 int length = (int)status_buffer->length -
1015 (int)((void *)&status_buffer->payload - (void *)status_buffer);
1016
1017 _zfcp_san_dbf_event_common_els("iels", 1, fsf_req, status_buffer->d_id,
1018 fc_host_port_id(adapter->scsi_host),
1019 *(u8 *) status_buffer->payload,
1020 (void *)status_buffer->payload, length);
1021 }
1022
1023 static int
1024 zfcp_san_dbf_view_format(debug_info_t * id, struct debug_view *view,
1025 char *out_buf, const char *in_buf)
1026 {
1027 struct zfcp_san_dbf_record *rec = (struct zfcp_san_dbf_record *)in_buf;
1028 char *buffer = NULL;
1029 int buflen = 0, total = 0;
1030 int len = 0;
1031
1032 if (strncmp(rec->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
1033 return 0;
1034
1035 len += zfcp_dbf_tag(out_buf + len, "tag", rec->tag);
1036 len += zfcp_dbf_view(out_buf + len, "fsf_reqid", "0x%0Lx",
1037 rec->fsf_reqid);
1038 len += zfcp_dbf_view(out_buf + len, "fsf_seqno", "0x%08x",
1039 rec->fsf_seqno);
1040 len += zfcp_dbf_view(out_buf + len, "s_id", "0x%06x", rec->s_id);
1041 len += zfcp_dbf_view(out_buf + len, "d_id", "0x%06x", rec->d_id);
1042
1043 if (strncmp(rec->tag, "octc", ZFCP_DBF_TAG_SIZE) == 0) {
1044 len += zfcp_dbf_view(out_buf + len, "cmd_req_code", "0x%04x",
1045 rec->type.ct.type.request.cmd_req_code);
1046 len += zfcp_dbf_view(out_buf + len, "revision", "0x%02x",
1047 rec->type.ct.type.request.revision);
1048 len += zfcp_dbf_view(out_buf + len, "gs_type", "0x%02x",
1049 rec->type.ct.type.request.gs_type);
1050 len += zfcp_dbf_view(out_buf + len, "gs_subtype", "0x%02x",
1051 rec->type.ct.type.request.gs_subtype);
1052 len += zfcp_dbf_view(out_buf + len, "options", "0x%02x",
1053 rec->type.ct.type.request.options);
1054 len += zfcp_dbf_view(out_buf + len, "max_res_size", "0x%04x",
1055 rec->type.ct.type.request.max_res_size);
1056 total = rec->type.ct.payload_size;
1057 buffer = rec->type.ct.payload;
1058 buflen = min(total, ZFCP_DBF_CT_PAYLOAD);
1059 } else if (strncmp(rec->tag, "rctc", ZFCP_DBF_TAG_SIZE) == 0) {
1060 len += zfcp_dbf_view(out_buf + len, "cmd_rsp_code", "0x%04x",
1061 rec->type.ct.type.response.cmd_rsp_code);
1062 len += zfcp_dbf_view(out_buf + len, "revision", "0x%02x",
1063 rec->type.ct.type.response.revision);
1064 len += zfcp_dbf_view(out_buf + len, "reason_code", "0x%02x",
1065 rec->type.ct.type.response.reason_code);
1066 len +=
1067 zfcp_dbf_view(out_buf + len, "reason_code_expl", "0x%02x",
1068 rec->type.ct.type.response.reason_code_expl);
1069 len +=
1070 zfcp_dbf_view(out_buf + len, "vendor_unique", "0x%02x",
1071 rec->type.ct.type.response.vendor_unique);
1072 total = rec->type.ct.payload_size;
1073 buffer = rec->type.ct.payload;
1074 buflen = min(total, ZFCP_DBF_CT_PAYLOAD);
1075 } else if (strncmp(rec->tag, "oels", ZFCP_DBF_TAG_SIZE) == 0 ||
1076 strncmp(rec->tag, "rels", ZFCP_DBF_TAG_SIZE) == 0 ||
1077 strncmp(rec->tag, "iels", ZFCP_DBF_TAG_SIZE) == 0) {
1078 len += zfcp_dbf_view(out_buf + len, "ls_code", "0x%02x",
1079 rec->type.els.ls_code);
1080 total = rec->type.els.payload_size;
1081 buffer = rec->type.els.payload;
1082 buflen = min(total, ZFCP_DBF_ELS_PAYLOAD);
1083 }
1084
1085 len += zfcp_dbf_view_dump(out_buf + len, "payload",
1086 buffer, buflen, 0, total);
1087
1088 if (buflen == total)
1089 len += sprintf(out_buf + len, "\n");
1090
1091 return len;
1092 }
1093
1094 static struct debug_view zfcp_san_dbf_view = {
1095 "structured",
1096 NULL,
1097 &zfcp_dbf_view_header,
1098 &zfcp_san_dbf_view_format,
1099 NULL,
1100 NULL
1101 };
1102
1103 static void
1104 _zfcp_scsi_dbf_event_common(const char *tag, const char *tag2, int level,
1105 struct zfcp_adapter *adapter,
1106 struct scsi_cmnd *scsi_cmnd,
1107 struct zfcp_fsf_req *fsf_req,
1108 unsigned long old_req_id)
1109 {
1110 struct zfcp_scsi_dbf_record *rec = &adapter->scsi_dbf_buf;
1111 struct zfcp_dbf_dump *dump = (struct zfcp_dbf_dump *)rec;
1112 unsigned long flags;
1113 struct fcp_rsp_iu *fcp_rsp;
1114 char *fcp_rsp_info = NULL, *fcp_sns_info = NULL;
1115 int offset = 0, buflen = 0;
1116
1117 spin_lock_irqsave(&adapter->scsi_dbf_lock, flags);
1118 do {
1119 memset(rec, 0, sizeof(struct zfcp_scsi_dbf_record));
1120 if (offset == 0) {
1121 strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
1122 strncpy(rec->tag2, tag2, ZFCP_DBF_TAG_SIZE);
1123 if (scsi_cmnd != NULL) {
1124 if (scsi_cmnd->device) {
1125 rec->scsi_id = scsi_cmnd->device->id;
1126 rec->scsi_lun = scsi_cmnd->device->lun;
1127 }
1128 rec->scsi_result = scsi_cmnd->result;
1129 rec->scsi_cmnd = (unsigned long)scsi_cmnd;
1130 rec->scsi_serial = scsi_cmnd->serial_number;
1131 memcpy(rec->scsi_opcode, &scsi_cmnd->cmnd,
1132 min((int)scsi_cmnd->cmd_len,
1133 ZFCP_DBF_SCSI_OPCODE));
1134 rec->scsi_retries = scsi_cmnd->retries;
1135 rec->scsi_allowed = scsi_cmnd->allowed;
1136 }
1137 if (fsf_req != NULL) {
1138 fcp_rsp = (struct fcp_rsp_iu *)
1139 &(fsf_req->qtcb->bottom.io.fcp_rsp);
1140 fcp_rsp_info =
1141 zfcp_get_fcp_rsp_info_ptr(fcp_rsp);
1142 fcp_sns_info =
1143 zfcp_get_fcp_sns_info_ptr(fcp_rsp);
1144
1145 rec->type.fcp.rsp_validity =
1146 fcp_rsp->validity.value;
1147 rec->type.fcp.rsp_scsi_status =
1148 fcp_rsp->scsi_status;
1149 rec->type.fcp.rsp_resid = fcp_rsp->fcp_resid;
1150 if (fcp_rsp->validity.bits.fcp_rsp_len_valid)
1151 rec->type.fcp.rsp_code =
1152 *(fcp_rsp_info + 3);
1153 if (fcp_rsp->validity.bits.fcp_sns_len_valid) {
1154 buflen = min((int)fcp_rsp->fcp_sns_len,
1155 ZFCP_DBF_SCSI_MAX_FCP_SNS_INFO);
1156 rec->type.fcp.sns_info_len = buflen;
1157 memcpy(rec->type.fcp.sns_info,
1158 fcp_sns_info,
1159 min(buflen,
1160 ZFCP_DBF_SCSI_FCP_SNS_INFO));
1161 offset += min(buflen,
1162 ZFCP_DBF_SCSI_FCP_SNS_INFO);
1163 }
1164
1165 rec->fsf_reqid = (unsigned long)fsf_req;
1166 rec->fsf_seqno = fsf_req->seq_no;
1167 rec->fsf_issued = fsf_req->issued;
1168 }
1169 rec->type.old_fsf_reqid = old_req_id;
1170 } else {
1171 strncpy(dump->tag, "dump", ZFCP_DBF_TAG_SIZE);
1172 dump->total_size = buflen;
1173 dump->offset = offset;
1174 dump->size = min(buflen - offset,
1175 (int)sizeof(struct
1176 zfcp_scsi_dbf_record) -
1177 (int)sizeof(struct zfcp_dbf_dump));
1178 memcpy(dump->data, fcp_sns_info + offset, dump->size);
1179 offset += dump->size;
1180 }
1181 debug_event(adapter->scsi_dbf, level,
1182 rec, sizeof(struct zfcp_scsi_dbf_record));
1183 } while (offset < buflen);
1184 spin_unlock_irqrestore(&adapter->scsi_dbf_lock, flags);
1185 }
1186
1187 void
1188 zfcp_scsi_dbf_event_result(const char *tag, int level,
1189 struct zfcp_adapter *adapter,
1190 struct scsi_cmnd *scsi_cmnd,
1191 struct zfcp_fsf_req *fsf_req)
1192 {
1193 _zfcp_scsi_dbf_event_common("rslt", tag, level,
1194 adapter, scsi_cmnd, fsf_req, 0);
1195 }
1196
1197 void
1198 zfcp_scsi_dbf_event_abort(const char *tag, struct zfcp_adapter *adapter,
1199 struct scsi_cmnd *scsi_cmnd,
1200 struct zfcp_fsf_req *new_fsf_req,
1201 unsigned long old_req_id)
1202 {
1203 _zfcp_scsi_dbf_event_common("abrt", tag, 1,
1204 adapter, scsi_cmnd, new_fsf_req, old_req_id);
1205 }
1206
1207 void
1208 zfcp_scsi_dbf_event_devreset(const char *tag, u8 flag, struct zfcp_unit *unit,
1209 struct scsi_cmnd *scsi_cmnd)
1210 {
1211 struct zfcp_adapter *adapter = unit->port->adapter;
1212
1213 _zfcp_scsi_dbf_event_common(flag == FCP_TARGET_RESET ? "trst" : "lrst",
1214 tag, 1, adapter, scsi_cmnd, NULL, 0);
1215 }
1216
1217 static int
1218 zfcp_scsi_dbf_view_format(debug_info_t * id, struct debug_view *view,
1219 char *out_buf, const char *in_buf)
1220 {
1221 struct zfcp_scsi_dbf_record *rec =
1222 (struct zfcp_scsi_dbf_record *)in_buf;
1223 int len = 0;
1224 struct timespec t;
1225
1226 if (strncmp(rec->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
1227 return 0;
1228
1229 len += zfcp_dbf_tag(out_buf + len, "tag", rec->tag);
1230 len += zfcp_dbf_tag(out_buf + len, "tag2", rec->tag2);
1231 len += zfcp_dbf_view(out_buf + len, "scsi_id", "0x%08x", rec->scsi_id);
1232 len += zfcp_dbf_view(out_buf + len, "scsi_lun", "0x%08x",
1233 rec->scsi_lun);
1234 len += zfcp_dbf_view(out_buf + len, "scsi_result", "0x%08x",
1235 rec->scsi_result);
1236 len += zfcp_dbf_view(out_buf + len, "scsi_cmnd", "0x%0Lx",
1237 rec->scsi_cmnd);
1238 len += zfcp_dbf_view(out_buf + len, "scsi_serial", "0x%016Lx",
1239 rec->scsi_serial);
1240 len += zfcp_dbf_view_dump(out_buf + len, "scsi_opcode",
1241 rec->scsi_opcode,
1242 ZFCP_DBF_SCSI_OPCODE,
1243 0, ZFCP_DBF_SCSI_OPCODE);
1244 len += zfcp_dbf_view(out_buf + len, "scsi_retries", "0x%02x",
1245 rec->scsi_retries);
1246 len += zfcp_dbf_view(out_buf + len, "scsi_allowed", "0x%02x",
1247 rec->scsi_allowed);
1248 if (strncmp(rec->tag, "abrt", ZFCP_DBF_TAG_SIZE) == 0) {
1249 len += zfcp_dbf_view(out_buf + len, "old_fsf_reqid", "0x%0Lx",
1250 rec->type.old_fsf_reqid);
1251 }
1252 len += zfcp_dbf_view(out_buf + len, "fsf_reqid", "0x%0Lx",
1253 rec->fsf_reqid);
1254 len += zfcp_dbf_view(out_buf + len, "fsf_seqno", "0x%08x",
1255 rec->fsf_seqno);
1256 zfcp_dbf_timestamp(rec->fsf_issued, &t);
1257 len += zfcp_dbf_view(out_buf + len, "fsf_issued", "%011lu:%06lu",
1258 t.tv_sec, t.tv_nsec);
1259 if (strncmp(rec->tag, "rslt", ZFCP_DBF_TAG_SIZE) == 0) {
1260 len +=
1261 zfcp_dbf_view(out_buf + len, "fcp_rsp_validity", "0x%02x",
1262 rec->type.fcp.rsp_validity);
1263 len +=
1264 zfcp_dbf_view(out_buf + len, "fcp_rsp_scsi_status",
1265 "0x%02x", rec->type.fcp.rsp_scsi_status);
1266 len +=
1267 zfcp_dbf_view(out_buf + len, "fcp_rsp_resid", "0x%08x",
1268 rec->type.fcp.rsp_resid);
1269 len +=
1270 zfcp_dbf_view(out_buf + len, "fcp_rsp_code", "0x%08x",
1271 rec->type.fcp.rsp_code);
1272 len +=
1273 zfcp_dbf_view(out_buf + len, "fcp_sns_info_len", "0x%08x",
1274 rec->type.fcp.sns_info_len);
1275 len +=
1276 zfcp_dbf_view_dump(out_buf + len, "fcp_sns_info",
1277 rec->type.fcp.sns_info,
1278 min((int)rec->type.fcp.sns_info_len,
1279 ZFCP_DBF_SCSI_FCP_SNS_INFO), 0,
1280 rec->type.fcp.sns_info_len);
1281 }
1282
1283 len += sprintf(out_buf + len, "\n");
1284
1285 return len;
1286 }
1287
1288 static struct debug_view zfcp_scsi_dbf_view = {
1289 "structured",
1290 NULL,
1291 &zfcp_dbf_view_header,
1292 &zfcp_scsi_dbf_view_format,
1293 NULL,
1294 NULL
1295 };
1296
1297 /**
1298 * zfcp_adapter_debug_register - registers debug feature for an adapter
1299 * @adapter: pointer to adapter for which debug features should be registered
1300 * return: -ENOMEM on error, 0 otherwise
1301 */
1302 int zfcp_adapter_debug_register(struct zfcp_adapter *adapter)
1303 {
1304 char dbf_name[DEBUG_MAX_NAME_LEN];
1305
1306 /* debug feature area which records recovery activity */
1307 sprintf(dbf_name, "zfcp_%s_rec", zfcp_get_busid_by_adapter(adapter));
1308 adapter->rec_dbf = debug_register(dbf_name, dbfsize, 1,
1309 sizeof(struct zfcp_rec_dbf_record));
1310 if (!adapter->rec_dbf)
1311 goto failed;
1312 debug_register_view(adapter->rec_dbf, &debug_hex_ascii_view);
1313 debug_register_view(adapter->rec_dbf, &zfcp_rec_dbf_view);
1314 debug_set_level(adapter->rec_dbf, 3);
1315
1316 /* debug feature area which records HBA (FSF and QDIO) conditions */
1317 sprintf(dbf_name, "zfcp_%s_hba", zfcp_get_busid_by_adapter(adapter));
1318 adapter->hba_dbf = debug_register(dbf_name, dbfsize, 1,
1319 sizeof(struct zfcp_hba_dbf_record));
1320 if (!adapter->hba_dbf)
1321 goto failed;
1322 debug_register_view(adapter->hba_dbf, &debug_hex_ascii_view);
1323 debug_register_view(adapter->hba_dbf, &zfcp_hba_dbf_view);
1324 debug_set_level(adapter->hba_dbf, 3);
1325
1326 /* debug feature area which records SAN command failures and recovery */
1327 sprintf(dbf_name, "zfcp_%s_san", zfcp_get_busid_by_adapter(adapter));
1328 adapter->san_dbf = debug_register(dbf_name, dbfsize, 1,
1329 sizeof(struct zfcp_san_dbf_record));
1330 if (!adapter->san_dbf)
1331 goto failed;
1332 debug_register_view(adapter->san_dbf, &debug_hex_ascii_view);
1333 debug_register_view(adapter->san_dbf, &zfcp_san_dbf_view);
1334 debug_set_level(adapter->san_dbf, 6);
1335
1336 /* debug feature area which records SCSI command failures and recovery */
1337 sprintf(dbf_name, "zfcp_%s_scsi", zfcp_get_busid_by_adapter(adapter));
1338 adapter->scsi_dbf = debug_register(dbf_name, dbfsize, 1,
1339 sizeof(struct zfcp_scsi_dbf_record));
1340 if (!adapter->scsi_dbf)
1341 goto failed;
1342 debug_register_view(adapter->scsi_dbf, &debug_hex_ascii_view);
1343 debug_register_view(adapter->scsi_dbf, &zfcp_scsi_dbf_view);
1344 debug_set_level(adapter->scsi_dbf, 3);
1345
1346 return 0;
1347
1348 failed:
1349 zfcp_adapter_debug_unregister(adapter);
1350
1351 return -ENOMEM;
1352 }
1353
1354 /**
1355 * zfcp_adapter_debug_unregister - unregisters debug feature for an adapter
1356 * @adapter: pointer to adapter for which debug features should be unregistered
1357 */
1358 void zfcp_adapter_debug_unregister(struct zfcp_adapter *adapter)
1359 {
1360 debug_unregister(adapter->scsi_dbf);
1361 debug_unregister(adapter->san_dbf);
1362 debug_unregister(adapter->hba_dbf);
1363 debug_unregister(adapter->rec_dbf);
1364 adapter->scsi_dbf = NULL;
1365 adapter->san_dbf = NULL;
1366 adapter->hba_dbf = NULL;
1367 adapter->rec_dbf = NULL;
1368 }
1369
1370 #undef ZFCP_LOG_AREA
x86 "subsystem" repository