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[SCSI] zfcp: Cleanup qdio code
[linux-2.6/kvm.git] / drivers / s390 / scsi / zfcp_dbf.c
blobc47c23a01c7f1c4482e18c7768c8faa5d3874e9b
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 void zfcp_dbf_tag(char **p, const char *label, const char *tag)
66 {
67 int i;
68
69 *p += sprintf(*p, "%-24s", label);
70 for (i = 0; i < ZFCP_DBF_TAG_SIZE; i++)
71 *p += sprintf(*p, "%c", tag[i]);
72 *p += sprintf(*p, "\n");
73 }
74
75 static void zfcp_dbf_outs(char **buf, const char *s1, const char *s2)
76 {
77 *buf += sprintf(*buf, "%-24s%s\n", s1, s2);
78 }
79
80 static void zfcp_dbf_out(char **buf, const char *s, const char *format, ...)
81 {
82 va_list arg;
83
84 *buf += sprintf(*buf, "%-24s", s);
85 va_start(arg, format);
86 *buf += vsprintf(*buf, format, arg);
87 va_end(arg);
88 *buf += sprintf(*buf, "\n");
89 }
90
91 static void zfcp_dbf_outd(char **p, const char *label, char *buffer,
92 int buflen, int offset, int total_size)
93 {
94 if (!offset)
95 *p += sprintf(*p, "%-24s ", label);
96 while (buflen--) {
97 if (offset > 0) {
98 if ((offset % 32) == 0)
99 *p += sprintf(*p, "\n%-24c ", ' ');
100 else if ((offset % 4) == 0)
101 *p += sprintf(*p, " ");
102 }
103 *p += sprintf(*p, "%02x", *buffer++);
104 if (++offset == total_size) {
105 *p += sprintf(*p, "\n");
106 break;
107 }
108 }
109 if (!total_size)
110 *p += sprintf(*p, "\n");
111 }
112
113 static int zfcp_dbf_view_header(debug_info_t *id, struct debug_view *view,
114 int area, debug_entry_t *entry, char *out_buf)
115 {
116 struct zfcp_dbf_dump *dump = (struct zfcp_dbf_dump *)DEBUG_DATA(entry);
117 struct timespec t;
118 char *p = out_buf;
119
120 if (strncmp(dump->tag, "dump", ZFCP_DBF_TAG_SIZE) != 0) {
121 zfcp_dbf_timestamp(entry->id.stck, &t);
122 zfcp_dbf_out(&p, "timestamp", "%011lu:%06lu",
123 t.tv_sec, t.tv_nsec);
124 zfcp_dbf_out(&p, "cpu", "%02i", entry->id.fields.cpuid);
125 } else {
126 zfcp_dbf_outd(&p, NULL, dump->data, dump->size, dump->offset,
127 dump->total_size);
128 if ((dump->offset + dump->size) == dump->total_size)
129 p += sprintf(p, "\n");
130 }
131 return p - out_buf;
132 }
133
134 /**
135 * zfcp_hba_dbf_event_fsf_response - trace event for request completion
136 * @fsf_req: request that has been completed
137 */
138 void zfcp_hba_dbf_event_fsf_response(struct zfcp_fsf_req *fsf_req)
139 {
140 struct zfcp_adapter *adapter = fsf_req->adapter;
141 struct fsf_qtcb *qtcb = fsf_req->qtcb;
142 union fsf_prot_status_qual *prot_status_qual =
143 &qtcb->prefix.prot_status_qual;
144 union fsf_status_qual *fsf_status_qual = &qtcb->header.fsf_status_qual;
145 struct scsi_cmnd *scsi_cmnd;
146 struct zfcp_port *port;
147 struct zfcp_unit *unit;
148 struct zfcp_send_els *send_els;
149 struct zfcp_hba_dbf_record *rec = &adapter->hba_dbf_buf;
150 struct zfcp_hba_dbf_record_response *response = &rec->u.response;
151 int level;
152 unsigned long flags;
153
154 spin_lock_irqsave(&adapter->hba_dbf_lock, flags);
155 memset(rec, 0, sizeof(*rec));
156 strncpy(rec->tag, "resp", ZFCP_DBF_TAG_SIZE);
157
158 if ((qtcb->prefix.prot_status != FSF_PROT_GOOD) &&
159 (qtcb->prefix.prot_status != FSF_PROT_FSF_STATUS_PRESENTED)) {
160 strncpy(rec->tag2, "perr", ZFCP_DBF_TAG_SIZE);
161 level = 1;
162 } else if (qtcb->header.fsf_status != FSF_GOOD) {
163 strncpy(rec->tag2, "ferr", ZFCP_DBF_TAG_SIZE);
164 level = 1;
165 } else if ((fsf_req->fsf_command == FSF_QTCB_OPEN_PORT_WITH_DID) ||
166 (fsf_req->fsf_command == FSF_QTCB_OPEN_LUN)) {
167 strncpy(rec->tag2, "open", ZFCP_DBF_TAG_SIZE);
168 level = 4;
169 } else if (qtcb->header.log_length) {
170 strncpy(rec->tag2, "qtcb", ZFCP_DBF_TAG_SIZE);
171 level = 5;
172 } else {
173 strncpy(rec->tag2, "norm", ZFCP_DBF_TAG_SIZE);
174 level = 6;
175 }
176
177 response->fsf_command = fsf_req->fsf_command;
178 response->fsf_reqid = (unsigned long)fsf_req;
179 response->fsf_seqno = fsf_req->seq_no;
180 response->fsf_issued = fsf_req->issued;
181 response->fsf_prot_status = qtcb->prefix.prot_status;
182 response->fsf_status = qtcb->header.fsf_status;
183 memcpy(response->fsf_prot_status_qual,
184 prot_status_qual, FSF_PROT_STATUS_QUAL_SIZE);
185 memcpy(response->fsf_status_qual,
186 fsf_status_qual, FSF_STATUS_QUALIFIER_SIZE);
187 response->fsf_req_status = fsf_req->status;
188 response->sbal_first = fsf_req->sbal_first;
189 response->sbal_last = fsf_req->sbal_last;
190 response->sbal_response = fsf_req->sbal_response;
191 response->pool = fsf_req->pool != NULL;
192 response->erp_action = (unsigned long)fsf_req->erp_action;
193
194 switch (fsf_req->fsf_command) {
195 case FSF_QTCB_FCP_CMND:
196 if (fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
197 break;
198 scsi_cmnd = (struct scsi_cmnd *)fsf_req->data;
199 if (scsi_cmnd) {
200 response->u.fcp.cmnd = (unsigned long)scsi_cmnd;
201 response->u.fcp.serial = scsi_cmnd->serial_number;
202 }
203 break;
204
205 case FSF_QTCB_OPEN_PORT_WITH_DID:
206 case FSF_QTCB_CLOSE_PORT:
207 case FSF_QTCB_CLOSE_PHYSICAL_PORT:
208 port = (struct zfcp_port *)fsf_req->data;
209 response->u.port.wwpn = port->wwpn;
210 response->u.port.d_id = port->d_id;
211 response->u.port.port_handle = qtcb->header.port_handle;
212 break;
213
214 case FSF_QTCB_OPEN_LUN:
215 case FSF_QTCB_CLOSE_LUN:
216 unit = (struct zfcp_unit *)fsf_req->data;
217 port = unit->port;
218 response->u.unit.wwpn = port->wwpn;
219 response->u.unit.fcp_lun = unit->fcp_lun;
220 response->u.unit.port_handle = qtcb->header.port_handle;
221 response->u.unit.lun_handle = qtcb->header.lun_handle;
222 break;
223
224 case FSF_QTCB_SEND_ELS:
225 send_els = (struct zfcp_send_els *)fsf_req->data;
226 response->u.els.d_id = qtcb->bottom.support.d_id;
227 response->u.els.ls_code = send_els->ls_code >> 24;
228 break;
229
230 case FSF_QTCB_ABORT_FCP_CMND:
231 case FSF_QTCB_SEND_GENERIC:
232 case FSF_QTCB_EXCHANGE_CONFIG_DATA:
233 case FSF_QTCB_EXCHANGE_PORT_DATA:
234 case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
235 case FSF_QTCB_UPLOAD_CONTROL_FILE:
236 break;
237 }
238
239 debug_event(adapter->hba_dbf, level, rec, sizeof(*rec));
240
241 /* have fcp channel microcode fixed to use as little as possible */
242 if (fsf_req->fsf_command != FSF_QTCB_FCP_CMND) {
243 /* adjust length skipping trailing zeros */
244 char *buf = (char *)qtcb + qtcb->header.log_start;
245 int len = qtcb->header.log_length;
246 for (; len && !buf[len - 1]; len--);
247 zfcp_dbf_hexdump(adapter->hba_dbf, rec, sizeof(*rec), level,
248 buf, len);
249 }
250
251 spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags);
252 }
253
254 /**
255 * zfcp_hba_dbf_event_fsf_unsol - trace event for an unsolicited status buffer
256 * @tag: tag indicating which kind of unsolicited status has been received
257 * @adapter: adapter that has issued the unsolicited status buffer
258 * @status_buffer: buffer containing payload of unsolicited status
259 */
260 void zfcp_hba_dbf_event_fsf_unsol(const char *tag, struct zfcp_adapter *adapter,
261 struct fsf_status_read_buffer *status_buffer)
262 {
263 struct zfcp_hba_dbf_record *rec = &adapter->hba_dbf_buf;
264 unsigned long flags;
265
266 spin_lock_irqsave(&adapter->hba_dbf_lock, flags);
267 memset(rec, 0, sizeof(*rec));
268 strncpy(rec->tag, "stat", ZFCP_DBF_TAG_SIZE);
269 strncpy(rec->tag2, tag, ZFCP_DBF_TAG_SIZE);
270
271 rec->u.status.failed = atomic_read(&adapter->stat_miss);
272 if (status_buffer != NULL) {
273 rec->u.status.status_type = status_buffer->status_type;
274 rec->u.status.status_subtype = status_buffer->status_subtype;
275 memcpy(&rec->u.status.queue_designator,
276 &status_buffer->queue_designator,
277 sizeof(struct fsf_queue_designator));
278
279 switch (status_buffer->status_type) {
280 case FSF_STATUS_READ_SENSE_DATA_AVAIL:
281 rec->u.status.payload_size =
282 ZFCP_DBF_UNSOL_PAYLOAD_SENSE_DATA_AVAIL;
283 break;
284
285 case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
286 rec->u.status.payload_size =
287 ZFCP_DBF_UNSOL_PAYLOAD_BIT_ERROR_THRESHOLD;
288 break;
289
290 case FSF_STATUS_READ_LINK_DOWN:
291 switch (status_buffer->status_subtype) {
292 case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
293 case FSF_STATUS_READ_SUB_FDISC_FAILED:
294 rec->u.status.payload_size =
295 sizeof(struct fsf_link_down_info);
296 }
297 break;
298
299 case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
300 rec->u.status.payload_size =
301 ZFCP_DBF_UNSOL_PAYLOAD_FEATURE_UPDATE_ALERT;
302 break;
303 }
304 memcpy(&rec->u.status.payload,
305 &status_buffer->payload, rec->u.status.payload_size);
306 }
307
308 debug_event(adapter->hba_dbf, 2, rec, sizeof(*rec));
309 spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags);
310 }
311
312 /**
313 * zfcp_hba_dbf_event_qdio - trace event for QDIO related failure
314 * @adapter: adapter affected by this QDIO related event
315 * @status: as passed by qdio module
316 * @qdio_error: as passed by qdio module
317 * @siga_error: as passed by qdio module
318 * @sbal_index: first buffer with error condition, as passed by qdio module
319 * @sbal_count: number of buffers affected, as passed by qdio module
320 */
321 void zfcp_hba_dbf_event_qdio(struct zfcp_adapter *adapter, unsigned int status,
322 unsigned int qdio_error, unsigned int siga_error,
323 int sbal_index, int sbal_count)
324 {
325 struct zfcp_hba_dbf_record *r = &adapter->hba_dbf_buf;
326 unsigned long flags;
327
328 spin_lock_irqsave(&adapter->hba_dbf_lock, flags);
329 memset(r, 0, sizeof(*r));
330 strncpy(r->tag, "qdio", ZFCP_DBF_TAG_SIZE);
331 r->u.qdio.status = status;
332 r->u.qdio.qdio_error = qdio_error;
333 r->u.qdio.siga_error = siga_error;
334 r->u.qdio.sbal_index = sbal_index;
335 r->u.qdio.sbal_count = sbal_count;
336 debug_event(adapter->hba_dbf, 0, r, sizeof(*r));
337 spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags);
338 }
339
340 static void zfcp_hba_dbf_view_response(char **p,
341 struct zfcp_hba_dbf_record_response *r)
342 {
343 struct timespec t;
344
345 zfcp_dbf_out(p, "fsf_command", "0x%08x", r->fsf_command);
346 zfcp_dbf_out(p, "fsf_reqid", "0x%0Lx", r->fsf_reqid);
347 zfcp_dbf_out(p, "fsf_seqno", "0x%08x", r->fsf_seqno);
348 zfcp_dbf_timestamp(r->fsf_issued, &t);
349 zfcp_dbf_out(p, "fsf_issued", "%011lu:%06lu", t.tv_sec, t.tv_nsec);
350 zfcp_dbf_out(p, "fsf_prot_status", "0x%08x", r->fsf_prot_status);
351 zfcp_dbf_out(p, "fsf_status", "0x%08x", r->fsf_status);
352 zfcp_dbf_outd(p, "fsf_prot_status_qual", r->fsf_prot_status_qual,
353 FSF_PROT_STATUS_QUAL_SIZE, 0, FSF_PROT_STATUS_QUAL_SIZE);
354 zfcp_dbf_outd(p, "fsf_status_qual", r->fsf_status_qual,
355 FSF_STATUS_QUALIFIER_SIZE, 0, FSF_STATUS_QUALIFIER_SIZE);
356 zfcp_dbf_out(p, "fsf_req_status", "0x%08x", r->fsf_req_status);
357 zfcp_dbf_out(p, "sbal_first", "0x%02x", r->sbal_first);
358 zfcp_dbf_out(p, "sbal_last", "0x%02x", r->sbal_last);
359 zfcp_dbf_out(p, "sbal_response", "0x%02x", r->sbal_response);
360 zfcp_dbf_out(p, "pool", "0x%02x", r->pool);
361
362 switch (r->fsf_command) {
363 case FSF_QTCB_FCP_CMND:
364 if (r->fsf_req_status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
365 break;
366 zfcp_dbf_out(p, "scsi_cmnd", "0x%0Lx", r->u.fcp.cmnd);
367 zfcp_dbf_out(p, "scsi_serial", "0x%016Lx", r->u.fcp.serial);
368 break;
369
370 case FSF_QTCB_OPEN_PORT_WITH_DID:
371 case FSF_QTCB_CLOSE_PORT:
372 case FSF_QTCB_CLOSE_PHYSICAL_PORT:
373 zfcp_dbf_out(p, "wwpn", "0x%016Lx", r->u.port.wwpn);
374 zfcp_dbf_out(p, "d_id", "0x%06x", r->u.port.d_id);
375 zfcp_dbf_out(p, "port_handle", "0x%08x", r->u.port.port_handle);
376 break;
377
378 case FSF_QTCB_OPEN_LUN:
379 case FSF_QTCB_CLOSE_LUN:
380 zfcp_dbf_out(p, "wwpn", "0x%016Lx", r->u.unit.wwpn);
381 zfcp_dbf_out(p, "fcp_lun", "0x%016Lx", r->u.unit.fcp_lun);
382 zfcp_dbf_out(p, "port_handle", "0x%08x", r->u.unit.port_handle);
383 zfcp_dbf_out(p, "lun_handle", "0x%08x", r->u.unit.lun_handle);
384 break;
385
386 case FSF_QTCB_SEND_ELS:
387 zfcp_dbf_out(p, "d_id", "0x%06x", r->u.els.d_id);
388 zfcp_dbf_out(p, "ls_code", "0x%02x", r->u.els.ls_code);
389 break;
390
391 case FSF_QTCB_ABORT_FCP_CMND:
392 case FSF_QTCB_SEND_GENERIC:
393 case FSF_QTCB_EXCHANGE_CONFIG_DATA:
394 case FSF_QTCB_EXCHANGE_PORT_DATA:
395 case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
396 case FSF_QTCB_UPLOAD_CONTROL_FILE:
397 break;
398 }
399 }
400
401 static void zfcp_hba_dbf_view_status(char **p,
402 struct zfcp_hba_dbf_record_status *r)
403 {
404 zfcp_dbf_out(p, "failed", "0x%02x", r->failed);
405 zfcp_dbf_out(p, "status_type", "0x%08x", r->status_type);
406 zfcp_dbf_out(p, "status_subtype", "0x%08x", r->status_subtype);
407 zfcp_dbf_outd(p, "queue_designator", (char *)&r->queue_designator,
408 sizeof(struct fsf_queue_designator), 0,
409 sizeof(struct fsf_queue_designator));
410 zfcp_dbf_outd(p, "payload", (char *)&r->payload, r->payload_size, 0,
411 r->payload_size);
412 }
413
414 static void zfcp_hba_dbf_view_qdio(char **p, struct zfcp_hba_dbf_record_qdio *r)
415 {
416 zfcp_dbf_out(p, "status", "0x%08x", r->status);
417 zfcp_dbf_out(p, "qdio_error", "0x%08x", r->qdio_error);
418 zfcp_dbf_out(p, "siga_error", "0x%08x", r->siga_error);
419 zfcp_dbf_out(p, "sbal_index", "0x%02x", r->sbal_index);
420 zfcp_dbf_out(p, "sbal_count", "0x%02x", r->sbal_count);
421 }
422
423 static int zfcp_hba_dbf_view_format(debug_info_t *id, struct debug_view *view,
424 char *out_buf, const char *in_buf)
425 {
426 struct zfcp_hba_dbf_record *r = (struct zfcp_hba_dbf_record *)in_buf;
427 char *p = out_buf;
428
429 if (strncmp(r->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
430 return 0;
431
432 zfcp_dbf_tag(&p, "tag", r->tag);
433 if (isalpha(r->tag2[0]))
434 zfcp_dbf_tag(&p, "tag2", r->tag2);
435
436 if (strncmp(r->tag, "resp", ZFCP_DBF_TAG_SIZE) == 0)
437 zfcp_hba_dbf_view_response(&p, &r->u.response);
438 else if (strncmp(r->tag, "stat", ZFCP_DBF_TAG_SIZE) == 0)
439 zfcp_hba_dbf_view_status(&p, &r->u.status);
440 else if (strncmp(r->tag, "qdio", ZFCP_DBF_TAG_SIZE) == 0)
441 zfcp_hba_dbf_view_qdio(&p, &r->u.qdio);
442
443 p += sprintf(p, "\n");
444 return p - out_buf;
445 }
446
447 static struct debug_view zfcp_hba_dbf_view = {
448 "structured",
449 NULL,
450 &zfcp_dbf_view_header,
451 &zfcp_hba_dbf_view_format,
452 NULL,
453 NULL
454 };
455
456 static const char *zfcp_rec_dbf_tags[] = {
457 [ZFCP_REC_DBF_ID_THREAD] = "thread",
458 [ZFCP_REC_DBF_ID_TARGET] = "target",
459 [ZFCP_REC_DBF_ID_TRIGGER] = "trigger",
460 [ZFCP_REC_DBF_ID_ACTION] = "action",
461 };
462
463 static const char *zfcp_rec_dbf_ids[] = {
464 [1] = "new",
465 [2] = "ready",
466 [3] = "kill",
467 [4] = "down sleep",
468 [5] = "down wakeup",
469 [6] = "down sleep ecd",
470 [7] = "down wakeup ecd",
471 [8] = "down sleep epd",
472 [9] = "down wakeup epd",
473 [10] = "online",
474 [11] = "operational",
475 [12] = "scsi slave destroy",
476 [13] = "propagate failed adapter",
477 [14] = "propagate failed port",
478 [15] = "block adapter",
479 [16] = "unblock adapter",
480 [17] = "block port",
481 [18] = "unblock port",
482 [19] = "block unit",
483 [20] = "unblock unit",
484 [21] = "unit recovery failed",
485 [22] = "port recovery failed",
486 [23] = "adapter recovery failed",
487 [24] = "qdio queues down",
488 [25] = "p2p failed",
489 [26] = "nameserver lookup failed",
490 [27] = "nameserver port failed",
491 [28] = "link up",
492 [29] = "link down",
493 [30] = "link up status read",
494 [31] = "open port failed",
495 [32] = "open port failed",
496 [33] = "close port",
497 [34] = "open unit failed",
498 [35] = "exclusive open unit failed",
499 [36] = "shared open unit failed",
500 [37] = "link down",
501 [38] = "link down status read no link",
502 [39] = "link down status read fdisc login",
503 [40] = "link down status read firmware update",
504 [41] = "link down status read unknown reason",
505 [42] = "link down ecd incomplete",
506 [43] = "link down epd incomplete",
507 [44] = "sysfs adapter recovery",
508 [45] = "sysfs port recovery",
509 [46] = "sysfs unit recovery",
510 [47] = "port boxed abort",
511 [48] = "unit boxed abort",
512 [49] = "port boxed ct",
513 [50] = "port boxed close physical",
514 [51] = "port boxed open unit",
515 [52] = "port boxed close unit",
516 [53] = "port boxed fcp",
517 [54] = "unit boxed fcp",
518 [55] = "port access denied ct",
519 [56] = "port access denied els",
520 [57] = "port access denied open port",
521 [58] = "port access denied close physical",
522 [59] = "unit access denied open unit",
523 [60] = "shared unit access denied open unit",
524 [61] = "unit access denied fcp",
525 [62] = "request timeout",
526 [63] = "adisc link test reject or timeout",
527 [64] = "adisc link test d_id changed",
528 [65] = "adisc link test failed",
529 [66] = "recovery out of memory",
530 [67] = "adapter recovery repeated after state change",
531 [68] = "port recovery repeated after state change",
532 [69] = "unit recovery repeated after state change",
533 [70] = "port recovery follow-up after successful adapter recovery",
534 [71] = "adapter recovery escalation after failed adapter recovery",
535 [72] = "port recovery follow-up after successful physical port "
536 "recovery",
537 [73] = "adapter recovery escalation after failed physical port "
538 "recovery",
539 [74] = "unit recovery follow-up after successful port recovery",
540 [75] = "physical port recovery escalation after failed port "
541 "recovery",
542 [76] = "port recovery escalation after failed unit recovery",
543 [77] = "recovery opening nameserver port",
544 [78] = "duplicate request id",
545 [79] = "link down",
546 [80] = "exclusive read-only unit access unsupported",
547 [81] = "shared read-write unit access unsupported",
548 [82] = "incoming rscn",
549 [83] = "incoming wwpn",
550 [84] = "",
551 [85] = "online",
552 [86] = "offline",
553 [87] = "ccw device gone",
554 [88] = "ccw device no path",
555 [89] = "ccw device operational",
556 [90] = "ccw device shutdown",
557 [91] = "sysfs port addition",
558 [92] = "sysfs port removal",
559 [93] = "sysfs adapter recovery",
560 [94] = "sysfs unit addition",
561 [95] = "sysfs unit removal",
562 [96] = "sysfs port recovery",
563 [97] = "sysfs unit recovery",
564 [98] = "sequence number mismatch",
565 [99] = "link up",
566 [100] = "error state",
567 [101] = "status read physical port closed",
568 [102] = "link up status read",
569 [103] = "too many failed status read buffers",
570 [104] = "port handle not valid abort",
571 [105] = "lun handle not valid abort",
572 [106] = "port handle not valid ct",
573 [107] = "port handle not valid close port",
574 [108] = "port handle not valid close physical port",
575 [109] = "port handle not valid open unit",
576 [110] = "port handle not valid close unit",
577 [111] = "lun handle not valid close unit",
578 [112] = "port handle not valid fcp",
579 [113] = "lun handle not valid fcp",
580 [114] = "handle mismatch fcp",
581 [115] = "lun not valid fcp",
582 [116] = "qdio send failed",
583 [117] = "version mismatch",
584 [118] = "incompatible qtcb type",
585 [119] = "unknown protocol status",
586 [120] = "unknown fsf command",
587 [121] = "no recommendation for status qualifier",
588 [122] = "status read physical port closed in error",
589 [123] = "fc service class not supported ct",
590 [124] = "fc service class not supported els",
591 [125] = "need newer zfcp",
592 [126] = "need newer microcode",
593 [127] = "arbitrated loop not supported",
594 [128] = "unknown topology",
595 [129] = "qtcb size mismatch",
596 [130] = "unknown fsf status ecd",
597 [131] = "fcp request too big",
598 [132] = "fc service class not supported fcp",
599 [133] = "data direction not valid fcp",
600 [134] = "command length not valid fcp",
601 [135] = "status read act update",
602 [136] = "status read cfdc update",
603 [137] = "hbaapi port open",
604 [138] = "hbaapi unit open",
605 [139] = "hbaapi unit shutdown",
606 [140] = "qdio error outbound",
607 [141] = "scsi host reset",
608 [142] = "dismissing fsf request for recovery action",
609 [143] = "recovery action timed out",
610 [144] = "recovery action gone",
611 [145] = "recovery action being processed",
612 [146] = "recovery action ready for next step",
613 [147] = "qdio error inbound",
614 };
615
616 static int zfcp_rec_dbf_view_format(debug_info_t *id, struct debug_view *view,
617 char *buf, const char *_rec)
618 {
619 struct zfcp_rec_dbf_record *r = (struct zfcp_rec_dbf_record *)_rec;
620 char *p = buf;
621
622 zfcp_dbf_outs(&p, "tag", zfcp_rec_dbf_tags[r->id]);
623 zfcp_dbf_outs(&p, "hint", zfcp_rec_dbf_ids[r->id2]);
624 zfcp_dbf_out(&p, "id", "%d", r->id2);
625 switch (r->id) {
626 case ZFCP_REC_DBF_ID_THREAD:
627 zfcp_dbf_out(&p, "total", "%d", r->u.thread.total);
628 zfcp_dbf_out(&p, "ready", "%d", r->u.thread.ready);
629 zfcp_dbf_out(&p, "running", "%d", r->u.thread.running);
630 break;
631 case ZFCP_REC_DBF_ID_TARGET:
632 zfcp_dbf_out(&p, "reference", "0x%016Lx", r->u.target.ref);
633 zfcp_dbf_out(&p, "status", "0x%08x", r->u.target.status);
634 zfcp_dbf_out(&p, "erp_count", "%d", r->u.target.erp_count);
635 zfcp_dbf_out(&p, "d_id", "0x%06x", r->u.target.d_id);
636 zfcp_dbf_out(&p, "wwpn", "0x%016Lx", r->u.target.wwpn);
637 zfcp_dbf_out(&p, "fcp_lun", "0x%016Lx", r->u.target.fcp_lun);
638 break;
639 case ZFCP_REC_DBF_ID_TRIGGER:
640 zfcp_dbf_out(&p, "reference", "0x%016Lx", r->u.trigger.ref);
641 zfcp_dbf_out(&p, "erp_action", "0x%016Lx", r->u.trigger.action);
642 zfcp_dbf_out(&p, "requested", "%d", r->u.trigger.want);
643 zfcp_dbf_out(&p, "executed", "%d", r->u.trigger.need);
644 zfcp_dbf_out(&p, "wwpn", "0x%016Lx", r->u.trigger.wwpn);
645 zfcp_dbf_out(&p, "fcp_lun", "0x%016Lx", r->u.trigger.fcp_lun);
646 zfcp_dbf_out(&p, "adapter_status", "0x%08x", r->u.trigger.as);
647 zfcp_dbf_out(&p, "port_status", "0x%08x", r->u.trigger.ps);
648 zfcp_dbf_out(&p, "unit_status", "0x%08x", r->u.trigger.us);
649 break;
650 case ZFCP_REC_DBF_ID_ACTION:
651 zfcp_dbf_out(&p, "erp_action", "0x%016Lx", r->u.action.action);
652 zfcp_dbf_out(&p, "fsf_req", "0x%016Lx", r->u.action.fsf_req);
653 zfcp_dbf_out(&p, "status", "0x%08Lx", r->u.action.status);
654 zfcp_dbf_out(&p, "step", "0x%08Lx", r->u.action.step);
655 break;
656 }
657 p += sprintf(p, "\n");
658 return p - buf;
659 }
660
661 static struct debug_view zfcp_rec_dbf_view = {
662 "structured",
663 NULL,
664 &zfcp_dbf_view_header,
665 &zfcp_rec_dbf_view_format,
666 NULL,
667 NULL
668 };
669
670 /**
671 * zfcp_rec_dbf_event_thread - trace event related to recovery thread operation
672 * @id2: identifier for event
673 * @adapter: adapter
674 * This function assumes that the caller is holding erp_lock.
675 */
676 void zfcp_rec_dbf_event_thread(u8 id2, struct zfcp_adapter *adapter)
677 {
678 struct zfcp_rec_dbf_record *r = &adapter->rec_dbf_buf;
679 unsigned long flags = 0;
680 struct list_head *entry;
681 unsigned ready = 0, running = 0, total;
682
683 list_for_each(entry, &adapter->erp_ready_head)
684 ready++;
685 list_for_each(entry, &adapter->erp_running_head)
686 running++;
687 total = adapter->erp_total_count;
688
689 spin_lock_irqsave(&adapter->rec_dbf_lock, flags);
690 memset(r, 0, sizeof(*r));
691 r->id = ZFCP_REC_DBF_ID_THREAD;
692 r->id2 = id2;
693 r->u.thread.total = total;
694 r->u.thread.ready = ready;
695 r->u.thread.running = running;
696 debug_event(adapter->rec_dbf, 6, r, sizeof(*r));
697 spin_unlock_irqrestore(&adapter->rec_dbf_lock, flags);
698 }
699
700 /**
701 * zfcp_rec_dbf_event_thread - trace event related to recovery thread operation
702 * @id2: identifier for event
703 * @adapter: adapter
704 * This function assumes that the caller does not hold erp_lock.
705 */
706 void zfcp_rec_dbf_event_thread_lock(u8 id2, struct zfcp_adapter *adapter)
707 {
708 unsigned long flags;
709
710 read_lock_irqsave(&adapter->erp_lock, flags);
711 zfcp_rec_dbf_event_thread(id2, adapter);
712 read_unlock_irqrestore(&adapter->erp_lock, flags);
713 }
714
715 static void zfcp_rec_dbf_event_target(u8 id2, void *ref,
716 struct zfcp_adapter *adapter,
717 atomic_t *status, atomic_t *erp_count,
718 u64 wwpn, u32 d_id, u64 fcp_lun)
719 {
720 struct zfcp_rec_dbf_record *r = &adapter->rec_dbf_buf;
721 unsigned long flags;
722
723 spin_lock_irqsave(&adapter->rec_dbf_lock, flags);
724 memset(r, 0, sizeof(*r));
725 r->id = ZFCP_REC_DBF_ID_TARGET;
726 r->id2 = id2;
727 r->u.target.ref = (unsigned long)ref;
728 r->u.target.status = atomic_read(status);
729 r->u.target.wwpn = wwpn;
730 r->u.target.d_id = d_id;
731 r->u.target.fcp_lun = fcp_lun;
732 r->u.target.erp_count = atomic_read(erp_count);
733 debug_event(adapter->rec_dbf, 3, r, sizeof(*r));
734 spin_unlock_irqrestore(&adapter->rec_dbf_lock, flags);
735 }
736
737 /**
738 * zfcp_rec_dbf_event_adapter - trace event for adapter state change
739 * @id: identifier for trigger of state change
740 * @ref: additional reference (e.g. request)
741 * @adapter: adapter
742 */
743 void zfcp_rec_dbf_event_adapter(u8 id, void *ref, struct zfcp_adapter *adapter)
744 {
745 zfcp_rec_dbf_event_target(id, ref, adapter, &adapter->status,
746 &adapter->erp_counter, 0, 0, 0);
747 }
748
749 /**
750 * zfcp_rec_dbf_event_port - trace event for port state change
751 * @id: identifier for trigger of state change
752 * @ref: additional reference (e.g. request)
753 * @port: port
754 */
755 void zfcp_rec_dbf_event_port(u8 id, void *ref, struct zfcp_port *port)
756 {
757 struct zfcp_adapter *adapter = port->adapter;
758
759 zfcp_rec_dbf_event_target(id, ref, adapter, &port->status,
760 &port->erp_counter, port->wwpn, port->d_id,
761 0);
762 }
763
764 /**
765 * zfcp_rec_dbf_event_unit - trace event for unit state change
766 * @id: identifier for trigger of state change
767 * @ref: additional reference (e.g. request)
768 * @unit: unit
769 */
770 void zfcp_rec_dbf_event_unit(u8 id, void *ref, struct zfcp_unit *unit)
771 {
772 struct zfcp_port *port = unit->port;
773 struct zfcp_adapter *adapter = port->adapter;
774
775 zfcp_rec_dbf_event_target(id, ref, adapter, &unit->status,
776 &unit->erp_counter, port->wwpn, port->d_id,
777 unit->fcp_lun);
778 }
779
780 /**
781 * zfcp_rec_dbf_event_trigger - trace event for triggered error recovery
782 * @id2: identifier for error recovery trigger
783 * @ref: additional reference (e.g. request)
784 * @want: originally requested error recovery action
785 * @need: error recovery action actually initiated
786 * @action: address of error recovery action struct
787 * @adapter: adapter
788 * @port: port
789 * @unit: unit
790 */
791 void zfcp_rec_dbf_event_trigger(u8 id2, void *ref, u8 want, u8 need,
792 void *action, struct zfcp_adapter *adapter,
793 struct zfcp_port *port, struct zfcp_unit *unit)
794 {
795 struct zfcp_rec_dbf_record *r = &adapter->rec_dbf_buf;
796 unsigned long flags;
797
798 spin_lock_irqsave(&adapter->rec_dbf_lock, flags);
799 memset(r, 0, sizeof(*r));
800 r->id = ZFCP_REC_DBF_ID_TRIGGER;
801 r->id2 = id2;
802 r->u.trigger.ref = (unsigned long)ref;
803 r->u.trigger.want = want;
804 r->u.trigger.need = need;
805 r->u.trigger.action = (unsigned long)action;
806 r->u.trigger.as = atomic_read(&adapter->status);
807 if (port) {
808 r->u.trigger.ps = atomic_read(&port->status);
809 r->u.trigger.wwpn = port->wwpn;
810 }
811 if (unit) {
812 r->u.trigger.us = atomic_read(&unit->status);
813 r->u.trigger.fcp_lun = unit->fcp_lun;
814 }
815 debug_event(adapter->rec_dbf, action ? 1 : 4, r, sizeof(*r));
816 spin_unlock_irqrestore(&adapter->rec_dbf_lock, flags);
817 }
818
819 /**
820 * zfcp_rec_dbf_event_action - trace event showing progress of recovery action
821 * @id2: identifier
822 * @erp_action: error recovery action struct pointer
823 */
824 void zfcp_rec_dbf_event_action(u8 id2, struct zfcp_erp_action *erp_action)
825 {
826 struct zfcp_adapter *adapter = erp_action->adapter;
827 struct zfcp_rec_dbf_record *r = &adapter->rec_dbf_buf;
828 unsigned long flags;
829
830 spin_lock_irqsave(&adapter->rec_dbf_lock, flags);
831 memset(r, 0, sizeof(*r));
832 r->id = ZFCP_REC_DBF_ID_ACTION;
833 r->id2 = id2;
834 r->u.action.action = (unsigned long)erp_action;
835 r->u.action.status = erp_action->status;
836 r->u.action.step = erp_action->step;
837 r->u.action.fsf_req = (unsigned long)erp_action->fsf_req;
838 debug_event(adapter->rec_dbf, 5, r, sizeof(*r));
839 spin_unlock_irqrestore(&adapter->rec_dbf_lock, flags);
840 }
841
842 /**
843 * zfcp_san_dbf_event_ct_request - trace event for issued CT request
844 * @fsf_req: request containing issued CT data
845 */
846 void zfcp_san_dbf_event_ct_request(struct zfcp_fsf_req *fsf_req)
847 {
848 struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data;
849 struct zfcp_port *port = ct->port;
850 struct zfcp_adapter *adapter = port->adapter;
851 struct ct_hdr *hdr = zfcp_sg_to_address(ct->req);
852 struct zfcp_san_dbf_record *r = &adapter->san_dbf_buf;
853 struct zfcp_san_dbf_record_ct_request *oct = &r->u.ct_req;
854 unsigned long flags;
855
856 spin_lock_irqsave(&adapter->san_dbf_lock, flags);
857 memset(r, 0, sizeof(*r));
858 strncpy(r->tag, "octc", ZFCP_DBF_TAG_SIZE);
859 r->fsf_reqid = (unsigned long)fsf_req;
860 r->fsf_seqno = fsf_req->seq_no;
861 r->s_id = fc_host_port_id(adapter->scsi_host);
862 r->d_id = port->d_id;
863 oct->cmd_req_code = hdr->cmd_rsp_code;
864 oct->revision = hdr->revision;
865 oct->gs_type = hdr->gs_type;
866 oct->gs_subtype = hdr->gs_subtype;
867 oct->options = hdr->options;
868 oct->max_res_size = hdr->max_res_size;
869 oct->len = min((int)ct->req->length - (int)sizeof(struct ct_hdr),
870 ZFCP_DBF_CT_PAYLOAD);
871 memcpy(oct->payload, (void *)hdr + sizeof(struct ct_hdr), oct->len);
872 debug_event(adapter->san_dbf, 3, r, sizeof(*r));
873 spin_unlock_irqrestore(&adapter->san_dbf_lock, flags);
874 }
875
876 /**
877 * zfcp_san_dbf_event_ct_response - trace event for completion of CT request
878 * @fsf_req: request containing CT response
879 */
880 void zfcp_san_dbf_event_ct_response(struct zfcp_fsf_req *fsf_req)
881 {
882 struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data;
883 struct zfcp_port *port = ct->port;
884 struct zfcp_adapter *adapter = port->adapter;
885 struct ct_hdr *hdr = zfcp_sg_to_address(ct->resp);
886 struct zfcp_san_dbf_record *r = &adapter->san_dbf_buf;
887 struct zfcp_san_dbf_record_ct_response *rct = &r->u.ct_resp;
888 unsigned long flags;
889
890 spin_lock_irqsave(&adapter->san_dbf_lock, flags);
891 memset(r, 0, sizeof(*r));
892 strncpy(r->tag, "rctc", ZFCP_DBF_TAG_SIZE);
893 r->fsf_reqid = (unsigned long)fsf_req;
894 r->fsf_seqno = fsf_req->seq_no;
895 r->s_id = port->d_id;
896 r->d_id = fc_host_port_id(adapter->scsi_host);
897 rct->cmd_rsp_code = hdr->cmd_rsp_code;
898 rct->revision = hdr->revision;
899 rct->reason_code = hdr->reason_code;
900 rct->expl = hdr->reason_code_expl;
901 rct->vendor_unique = hdr->vendor_unique;
902 rct->len = min((int)ct->resp->length - (int)sizeof(struct ct_hdr),
903 ZFCP_DBF_CT_PAYLOAD);
904 memcpy(rct->payload, (void *)hdr + sizeof(struct ct_hdr), rct->len);
905 debug_event(adapter->san_dbf, 3, r, sizeof(*r));
906 spin_unlock_irqrestore(&adapter->san_dbf_lock, flags);
907 }
908
909 static void zfcp_san_dbf_event_els(const char *tag, int level,
910 struct zfcp_fsf_req *fsf_req, u32 s_id,
911 u32 d_id, u8 ls_code, void *buffer,
912 int buflen)
913 {
914 struct zfcp_adapter *adapter = fsf_req->adapter;
915 struct zfcp_san_dbf_record *rec = &adapter->san_dbf_buf;
916 unsigned long flags;
917
918 spin_lock_irqsave(&adapter->san_dbf_lock, flags);
919 memset(rec, 0, sizeof(*rec));
920 strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
921 rec->fsf_reqid = (unsigned long)fsf_req;
922 rec->fsf_seqno = fsf_req->seq_no;
923 rec->s_id = s_id;
924 rec->d_id = d_id;
925 rec->u.els.ls_code = ls_code;
926 debug_event(adapter->san_dbf, level, rec, sizeof(*rec));
927 zfcp_dbf_hexdump(adapter->san_dbf, rec, sizeof(*rec), level,
928 buffer, min(buflen, ZFCP_DBF_ELS_MAX_PAYLOAD));
929 spin_unlock_irqrestore(&adapter->san_dbf_lock, flags);
930 }
931
932 /**
933 * zfcp_san_dbf_event_els_request - trace event for issued ELS
934 * @fsf_req: request containing issued ELS
935 */
936 void zfcp_san_dbf_event_els_request(struct zfcp_fsf_req *fsf_req)
937 {
938 struct zfcp_send_els *els = (struct zfcp_send_els *)fsf_req->data;
939
940 zfcp_san_dbf_event_els("oels", 2, fsf_req,
941 fc_host_port_id(els->adapter->scsi_host),
942 els->d_id, *(u8 *) zfcp_sg_to_address(els->req),
943 zfcp_sg_to_address(els->req), els->req->length);
944 }
945
946 /**
947 * zfcp_san_dbf_event_els_response - trace event for completed ELS
948 * @fsf_req: request containing ELS response
949 */
950 void zfcp_san_dbf_event_els_response(struct zfcp_fsf_req *fsf_req)
951 {
952 struct zfcp_send_els *els = (struct zfcp_send_els *)fsf_req->data;
953
954 zfcp_san_dbf_event_els("rels", 2, fsf_req, els->d_id,
955 fc_host_port_id(els->adapter->scsi_host),
956 *(u8 *)zfcp_sg_to_address(els->req),
957 zfcp_sg_to_address(els->resp),
958 els->resp->length);
959 }
960
961 /**
962 * zfcp_san_dbf_event_incoming_els - trace event for incomig ELS
963 * @fsf_req: request containing unsolicited status buffer with incoming ELS
964 */
965 void zfcp_san_dbf_event_incoming_els(struct zfcp_fsf_req *fsf_req)
966 {
967 struct zfcp_adapter *adapter = fsf_req->adapter;
968 struct fsf_status_read_buffer *buf =
969 (struct fsf_status_read_buffer *)fsf_req->data;
970 int length = (int)buf->length -
971 (int)((void *)&buf->payload - (void *)buf);
972
973 zfcp_san_dbf_event_els("iels", 1, fsf_req, buf->d_id,
974 fc_host_port_id(adapter->scsi_host),
975 *(u8 *)buf->payload, (void *)buf->payload,
976 length);
977 }
978
979 static int zfcp_san_dbf_view_format(debug_info_t *id, struct debug_view *view,
980 char *out_buf, const char *in_buf)
981 {
982 struct zfcp_san_dbf_record *r = (struct zfcp_san_dbf_record *)in_buf;
983 char *buffer = NULL;
984 int buflen = 0, total = 0;
985 char *p = out_buf;
986
987 if (strncmp(r->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
988 return 0;
989
990 zfcp_dbf_tag(&p, "tag", r->tag);
991 zfcp_dbf_out(&p, "fsf_reqid", "0x%0Lx", r->fsf_reqid);
992 zfcp_dbf_out(&p, "fsf_seqno", "0x%08x", r->fsf_seqno);
993 zfcp_dbf_out(&p, "s_id", "0x%06x", r->s_id);
994 zfcp_dbf_out(&p, "d_id", "0x%06x", r->d_id);
995
996 if (strncmp(r->tag, "octc", ZFCP_DBF_TAG_SIZE) == 0) {
997 struct zfcp_san_dbf_record_ct_request *ct = &r->u.ct_req;
998 zfcp_dbf_out(&p, "cmd_req_code", "0x%04x", ct->cmd_req_code);
999 zfcp_dbf_out(&p, "revision", "0x%02x", ct->revision);
1000 zfcp_dbf_out(&p, "gs_type", "0x%02x", ct->gs_type);
1001 zfcp_dbf_out(&p, "gs_subtype", "0x%02x", ct->gs_subtype);
1002 zfcp_dbf_out(&p, "options", "0x%02x", ct->options);
1003 zfcp_dbf_out(&p, "max_res_size", "0x%04x", ct->max_res_size);
1004 total = ct->len;
1005 buffer = ct->payload;
1006 buflen = min(total, ZFCP_DBF_CT_PAYLOAD);
1007 } else if (strncmp(r->tag, "rctc", ZFCP_DBF_TAG_SIZE) == 0) {
1008 struct zfcp_san_dbf_record_ct_response *ct = &r->u.ct_resp;
1009 zfcp_dbf_out(&p, "cmd_rsp_code", "0x%04x", ct->cmd_rsp_code);
1010 zfcp_dbf_out(&p, "revision", "0x%02x", ct->revision);
1011 zfcp_dbf_out(&p, "reason_code", "0x%02x", ct->reason_code);
1012 zfcp_dbf_out(&p, "reason_code_expl", "0x%02x", ct->expl);
1013 zfcp_dbf_out(&p, "vendor_unique", "0x%02x", ct->vendor_unique);
1014 total = ct->len;
1015 buffer = ct->payload;
1016 buflen = min(total, ZFCP_DBF_CT_PAYLOAD);
1017 } else if (strncmp(r->tag, "oels", ZFCP_DBF_TAG_SIZE) == 0 ||
1018 strncmp(r->tag, "rels", ZFCP_DBF_TAG_SIZE) == 0 ||
1019 strncmp(r->tag, "iels", ZFCP_DBF_TAG_SIZE) == 0) {
1020 struct zfcp_san_dbf_record_els *els = &r->u.els;
1021 zfcp_dbf_out(&p, "ls_code", "0x%02x", els->ls_code);
1022 total = els->len;
1023 buffer = els->payload;
1024 buflen = min(total, ZFCP_DBF_ELS_PAYLOAD);
1025 }
1026
1027 zfcp_dbf_outd(&p, "payload", buffer, buflen, 0, total);
1028 if (buflen == total)
1029 p += sprintf(p, "\n");
1030
1031 return p - out_buf;
1032 }
1033
1034 static struct debug_view zfcp_san_dbf_view = {
1035 "structured",
1036 NULL,
1037 &zfcp_dbf_view_header,
1038 &zfcp_san_dbf_view_format,
1039 NULL,
1040 NULL
1041 };
1042
1043 static void zfcp_scsi_dbf_event(const char *tag, const char *tag2, int level,
1044 struct zfcp_adapter *adapter,
1045 struct scsi_cmnd *scsi_cmnd,
1046 struct zfcp_fsf_req *fsf_req,
1047 unsigned long old_req_id)
1048 {
1049 struct zfcp_scsi_dbf_record *rec = &adapter->scsi_dbf_buf;
1050 struct zfcp_dbf_dump *dump = (struct zfcp_dbf_dump *)rec;
1051 unsigned long flags;
1052 struct fcp_rsp_iu *fcp_rsp;
1053 char *fcp_rsp_info = NULL, *fcp_sns_info = NULL;
1054 int offset = 0, buflen = 0;
1055
1056 spin_lock_irqsave(&adapter->scsi_dbf_lock, flags);
1057 do {
1058 memset(rec, 0, sizeof(*rec));
1059 if (offset == 0) {
1060 strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
1061 strncpy(rec->tag2, tag2, ZFCP_DBF_TAG_SIZE);
1062 if (scsi_cmnd != NULL) {
1063 if (scsi_cmnd->device) {
1064 rec->scsi_id = scsi_cmnd->device->id;
1065 rec->scsi_lun = scsi_cmnd->device->lun;
1066 }
1067 rec->scsi_result = scsi_cmnd->result;
1068 rec->scsi_cmnd = (unsigned long)scsi_cmnd;
1069 rec->scsi_serial = scsi_cmnd->serial_number;
1070 memcpy(rec->scsi_opcode, scsi_cmnd->cmnd,
1071 min((int)scsi_cmnd->cmd_len,
1072 ZFCP_DBF_SCSI_OPCODE));
1073 rec->scsi_retries = scsi_cmnd->retries;
1074 rec->scsi_allowed = scsi_cmnd->allowed;
1075 }
1076 if (fsf_req != NULL) {
1077 fcp_rsp = (struct fcp_rsp_iu *)
1078 &(fsf_req->qtcb->bottom.io.fcp_rsp);
1079 fcp_rsp_info =
1080 zfcp_get_fcp_rsp_info_ptr(fcp_rsp);
1081 fcp_sns_info =
1082 zfcp_get_fcp_sns_info_ptr(fcp_rsp);
1083
1084 rec->rsp_validity = fcp_rsp->validity.value;
1085 rec->rsp_scsi_status = fcp_rsp->scsi_status;
1086 rec->rsp_resid = fcp_rsp->fcp_resid;
1087 if (fcp_rsp->validity.bits.fcp_rsp_len_valid)
1088 rec->rsp_code = *(fcp_rsp_info + 3);
1089 if (fcp_rsp->validity.bits.fcp_sns_len_valid) {
1090 buflen = min((int)fcp_rsp->fcp_sns_len,
1091 ZFCP_DBF_SCSI_MAX_FCP_SNS_INFO);
1092 rec->sns_info_len = buflen;
1093 memcpy(rec->sns_info, fcp_sns_info,
1094 min(buflen,
1095 ZFCP_DBF_SCSI_FCP_SNS_INFO));
1096 offset += min(buflen,
1097 ZFCP_DBF_SCSI_FCP_SNS_INFO);
1098 }
1099
1100 rec->fsf_reqid = (unsigned long)fsf_req;
1101 rec->fsf_seqno = fsf_req->seq_no;
1102 rec->fsf_issued = fsf_req->issued;
1103 }
1104 rec->old_fsf_reqid = old_req_id;
1105 } else {
1106 strncpy(dump->tag, "dump", ZFCP_DBF_TAG_SIZE);
1107 dump->total_size = buflen;
1108 dump->offset = offset;
1109 dump->size = min(buflen - offset,
1110 (int)sizeof(struct
1111 zfcp_scsi_dbf_record) -
1112 (int)sizeof(struct zfcp_dbf_dump));
1113 memcpy(dump->data, fcp_sns_info + offset, dump->size);
1114 offset += dump->size;
1115 }
1116 debug_event(adapter->scsi_dbf, level, rec, sizeof(*rec));
1117 } while (offset < buflen);
1118 spin_unlock_irqrestore(&adapter->scsi_dbf_lock, flags);
1119 }
1120
1121 /**
1122 * zfcp_scsi_dbf_event_result - trace event for SCSI command completion
1123 * @tag: tag indicating success or failure of SCSI command
1124 * @level: trace level applicable for this event
1125 * @adapter: adapter that has been used to issue the SCSI command
1126 * @scsi_cmnd: SCSI command pointer
1127 * @fsf_req: request used to issue SCSI command (might be NULL)
1128 */
1129 void zfcp_scsi_dbf_event_result(const char *tag, int level,
1130 struct zfcp_adapter *adapter,
1131 struct scsi_cmnd *scsi_cmnd,
1132 struct zfcp_fsf_req *fsf_req)
1133 {
1134 zfcp_scsi_dbf_event("rslt", tag, level, adapter, scsi_cmnd, fsf_req, 0);
1135 }
1136
1137 /**
1138 * zfcp_scsi_dbf_event_abort - trace event for SCSI command abort
1139 * @tag: tag indicating success or failure of abort operation
1140 * @adapter: adapter thas has been used to issue SCSI command to be aborted
1141 * @scsi_cmnd: SCSI command to be aborted
1142 * @new_fsf_req: request containing abort (might be NULL)
1143 * @old_req_id: identifier of request containg SCSI command to be aborted
1144 */
1145 void zfcp_scsi_dbf_event_abort(const char *tag, struct zfcp_adapter *adapter,
1146 struct scsi_cmnd *scsi_cmnd,
1147 struct zfcp_fsf_req *new_fsf_req,
1148 unsigned long old_req_id)
1149 {
1150 zfcp_scsi_dbf_event("abrt", tag, 1, adapter, scsi_cmnd, new_fsf_req,
1151 old_req_id);
1152 }
1153
1154 /**
1155 * zfcp_scsi_dbf_event_devreset - trace event for Logical Unit or Target Reset
1156 * @tag: tag indicating success or failure of reset operation
1157 * @flag: indicates type of reset (Target Reset, Logical Unit Reset)
1158 * @unit: unit that needs reset
1159 * @scsi_cmnd: SCSI command which caused this error recovery
1160 */
1161 void zfcp_scsi_dbf_event_devreset(const char *tag, u8 flag,
1162 struct zfcp_unit *unit,
1163 struct scsi_cmnd *scsi_cmnd)
1164 {
1165 zfcp_scsi_dbf_event(flag == FCP_TARGET_RESET ? "trst" : "lrst", tag, 1,
1166 unit->port->adapter, scsi_cmnd, NULL, 0);
1167 }
1168
1169 static int zfcp_scsi_dbf_view_format(debug_info_t *id, struct debug_view *view,
1170 char *out_buf, const char *in_buf)
1171 {
1172 struct zfcp_scsi_dbf_record *r = (struct zfcp_scsi_dbf_record *)in_buf;
1173 struct timespec t;
1174 char *p = out_buf;
1175
1176 if (strncmp(r->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
1177 return 0;
1178
1179 zfcp_dbf_tag(&p, "tag", r->tag);
1180 zfcp_dbf_tag(&p, "tag2", r->tag2);
1181 zfcp_dbf_out(&p, "scsi_id", "0x%08x", r->scsi_id);
1182 zfcp_dbf_out(&p, "scsi_lun", "0x%08x", r->scsi_lun);
1183 zfcp_dbf_out(&p, "scsi_result", "0x%08x", r->scsi_result);
1184 zfcp_dbf_out(&p, "scsi_cmnd", "0x%0Lx", r->scsi_cmnd);
1185 zfcp_dbf_out(&p, "scsi_serial", "0x%016Lx", r->scsi_serial);
1186 zfcp_dbf_outd(&p, "scsi_opcode", r->scsi_opcode, ZFCP_DBF_SCSI_OPCODE,
1187 0, ZFCP_DBF_SCSI_OPCODE);
1188 zfcp_dbf_out(&p, "scsi_retries", "0x%02x", r->scsi_retries);
1189 zfcp_dbf_out(&p, "scsi_allowed", "0x%02x", r->scsi_allowed);
1190 if (strncmp(r->tag, "abrt", ZFCP_DBF_TAG_SIZE) == 0)
1191 zfcp_dbf_out(&p, "old_fsf_reqid", "0x%0Lx", r->old_fsf_reqid);
1192 zfcp_dbf_out(&p, "fsf_reqid", "0x%0Lx", r->fsf_reqid);
1193 zfcp_dbf_out(&p, "fsf_seqno", "0x%08x", r->fsf_seqno);
1194 zfcp_dbf_timestamp(r->fsf_issued, &t);
1195 zfcp_dbf_out(&p, "fsf_issued", "%011lu:%06lu", t.tv_sec, t.tv_nsec);
1196
1197 if (strncmp(r->tag, "rslt", ZFCP_DBF_TAG_SIZE) == 0) {
1198 zfcp_dbf_out(&p, "fcp_rsp_validity", "0x%02x", r->rsp_validity);
1199 zfcp_dbf_out(&p, "fcp_rsp_scsi_status", "0x%02x",
1200 r->rsp_scsi_status);
1201 zfcp_dbf_out(&p, "fcp_rsp_resid", "0x%08x", r->rsp_resid);
1202 zfcp_dbf_out(&p, "fcp_rsp_code", "0x%08x", r->rsp_code);
1203 zfcp_dbf_out(&p, "fcp_sns_info_len", "0x%08x", r->sns_info_len);
1204 zfcp_dbf_outd(&p, "fcp_sns_info", r->sns_info,
1205 min((int)r->sns_info_len,
1206 ZFCP_DBF_SCSI_FCP_SNS_INFO), 0,
1207 r->sns_info_len);
1208 }
1209 p += sprintf(p, "\n");
1210 return p - out_buf;
1211 }
1212
1213 static struct debug_view zfcp_scsi_dbf_view = {
1214 "structured",
1215 NULL,
1216 &zfcp_dbf_view_header,
1217 &zfcp_scsi_dbf_view_format,
1218 NULL,
1219 NULL
1220 };
1221
1222 /**
1223 * zfcp_adapter_debug_register - registers debug feature for an adapter
1224 * @adapter: pointer to adapter for which debug features should be registered
1225 * return: -ENOMEM on error, 0 otherwise
1226 */
1227 int zfcp_adapter_debug_register(struct zfcp_adapter *adapter)
1228 {
1229 char dbf_name[DEBUG_MAX_NAME_LEN];
1230
1231 /* debug feature area which records recovery activity */
1232 sprintf(dbf_name, "zfcp_%s_rec", zfcp_get_busid_by_adapter(adapter));
1233 adapter->rec_dbf = debug_register(dbf_name, dbfsize, 1,
1234 sizeof(struct zfcp_rec_dbf_record));
1235 if (!adapter->rec_dbf)
1236 goto failed;
1237 debug_register_view(adapter->rec_dbf, &debug_hex_ascii_view);
1238 debug_register_view(adapter->rec_dbf, &zfcp_rec_dbf_view);
1239 debug_set_level(adapter->rec_dbf, 3);
1240
1241 /* debug feature area which records HBA (FSF and QDIO) conditions */
1242 sprintf(dbf_name, "zfcp_%s_hba", zfcp_get_busid_by_adapter(adapter));
1243 adapter->hba_dbf = debug_register(dbf_name, dbfsize, 1,
1244 sizeof(struct zfcp_hba_dbf_record));
1245 if (!adapter->hba_dbf)
1246 goto failed;
1247 debug_register_view(adapter->hba_dbf, &debug_hex_ascii_view);
1248 debug_register_view(adapter->hba_dbf, &zfcp_hba_dbf_view);
1249 debug_set_level(adapter->hba_dbf, 3);
1250
1251 /* debug feature area which records SAN command failures and recovery */
1252 sprintf(dbf_name, "zfcp_%s_san", zfcp_get_busid_by_adapter(adapter));
1253 adapter->san_dbf = debug_register(dbf_name, dbfsize, 1,
1254 sizeof(struct zfcp_san_dbf_record));
1255 if (!adapter->san_dbf)
1256 goto failed;
1257 debug_register_view(adapter->san_dbf, &debug_hex_ascii_view);
1258 debug_register_view(adapter->san_dbf, &zfcp_san_dbf_view);
1259 debug_set_level(adapter->san_dbf, 6);
1260
1261 /* debug feature area which records SCSI command failures and recovery */
1262 sprintf(dbf_name, "zfcp_%s_scsi", zfcp_get_busid_by_adapter(adapter));
1263 adapter->scsi_dbf = debug_register(dbf_name, dbfsize, 1,
1264 sizeof(struct zfcp_scsi_dbf_record));
1265 if (!adapter->scsi_dbf)
1266 goto failed;
1267 debug_register_view(adapter->scsi_dbf, &debug_hex_ascii_view);
1268 debug_register_view(adapter->scsi_dbf, &zfcp_scsi_dbf_view);
1269 debug_set_level(adapter->scsi_dbf, 3);
1270
1271 return 0;
1272
1273 failed:
1274 zfcp_adapter_debug_unregister(adapter);
1275
1276 return -ENOMEM;
1277 }
1278
1279 /**
1280 * zfcp_adapter_debug_unregister - unregisters debug feature for an adapter
1281 * @adapter: pointer to adapter for which debug features should be unregistered
1282 */
1283 void zfcp_adapter_debug_unregister(struct zfcp_adapter *adapter)
1284 {
1285 debug_unregister(adapter->scsi_dbf);
1286 debug_unregister(adapter->san_dbf);
1287 debug_unregister(adapter->hba_dbf);
1288 debug_unregister(adapter->rec_dbf);
1289 adapter->scsi_dbf = NULL;
1290 adapter->san_dbf = NULL;
1291 adapter->hba_dbf = NULL;
1292 adapter->rec_dbf = NULL;
1293 }
1294
1295 #undef ZFCP_LOG_AREA
kernel-based virtual machine