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slub: record page flag overlays explicitly
[linux-2.6/mini2440.git] / drivers / s390 / scsi / zfcp_dbf.c
blobfca48b88fc53b662be4e85dce9aaec8a3038e293
1 /*
2 * zfcp device driver
3 *
4 * Debug traces for zfcp.
5 *
6 * Copyright IBM Corporation 2002, 2008
7 */
8
9 #include <linux/ctype.h>
10 #include <asm/debug.h>
11 #include "zfcp_ext.h"
12
13 static u32 dbfsize = 4;
14
15 module_param(dbfsize, uint, 0400);
16 MODULE_PARM_DESC(dbfsize,
17 "number of pages for each debug feature area (default 4)");
18
19 static void zfcp_dbf_hexdump(debug_info_t *dbf, void *to, int to_len,
20 int level, char *from, int from_len)
21 {
22 int offset;
23 struct zfcp_dbf_dump *dump = to;
24 int room = to_len - sizeof(*dump);
25
26 for (offset = 0; offset < from_len; offset += dump->size) {
27 memset(to, 0, to_len);
28 strncpy(dump->tag, "dump", ZFCP_DBF_TAG_SIZE);
29 dump->total_size = from_len;
30 dump->offset = offset;
31 dump->size = min(from_len - offset, room);
32 memcpy(dump->data, from + offset, dump->size);
33 debug_event(dbf, level, dump, dump->size);
34 }
35 }
36
37 /* FIXME: this duplicate this code in s390 debug feature */
38 static void zfcp_dbf_timestamp(unsigned long long stck, struct timespec *time)
39 {
40 unsigned long long sec;
41
42 stck -= 0x8126d60e46000000LL - (0x3c26700LL * 1000000 * 4096);
43 sec = stck >> 12;
44 do_div(sec, 1000000);
45 time->tv_sec = sec;
46 stck -= (sec * 1000000) << 12;
47 time->tv_nsec = ((stck * 1000) >> 12);
48 }
49
50 static void zfcp_dbf_tag(char **p, const char *label, const char *tag)
51 {
52 int i;
53
54 *p += sprintf(*p, "%-24s", label);
55 for (i = 0; i < ZFCP_DBF_TAG_SIZE; i++)
56 *p += sprintf(*p, "%c", tag[i]);
57 *p += sprintf(*p, "\n");
58 }
59
60 static void zfcp_dbf_outs(char **buf, const char *s1, const char *s2)
61 {
62 *buf += sprintf(*buf, "%-24s%s\n", s1, s2);
63 }
64
65 static void zfcp_dbf_out(char **buf, const char *s, const char *format, ...)
66 {
67 va_list arg;
68
69 *buf += sprintf(*buf, "%-24s", s);
70 va_start(arg, format);
71 *buf += vsprintf(*buf, format, arg);
72 va_end(arg);
73 *buf += sprintf(*buf, "\n");
74 }
75
76 static void zfcp_dbf_outd(char **p, const char *label, char *buffer,
77 int buflen, int offset, int total_size)
78 {
79 if (!offset)
80 *p += sprintf(*p, "%-24s ", label);
81 while (buflen--) {
82 if (offset > 0) {
83 if ((offset % 32) == 0)
84 *p += sprintf(*p, "\n%-24c ", ' ');
85 else if ((offset % 4) == 0)
86 *p += sprintf(*p, " ");
87 }
88 *p += sprintf(*p, "%02x", *buffer++);
89 if (++offset == total_size) {
90 *p += sprintf(*p, "\n");
91 break;
92 }
93 }
94 if (!total_size)
95 *p += sprintf(*p, "\n");
96 }
97
98 static int zfcp_dbf_view_header(debug_info_t *id, struct debug_view *view,
99 int area, debug_entry_t *entry, char *out_buf)
100 {
101 struct zfcp_dbf_dump *dump = (struct zfcp_dbf_dump *)DEBUG_DATA(entry);
102 struct timespec t;
103 char *p = out_buf;
104
105 if (strncmp(dump->tag, "dump", ZFCP_DBF_TAG_SIZE) != 0) {
106 zfcp_dbf_timestamp(entry->id.stck, &t);
107 zfcp_dbf_out(&p, "timestamp", "%011lu:%06lu",
108 t.tv_sec, t.tv_nsec);
109 zfcp_dbf_out(&p, "cpu", "%02i", entry->id.fields.cpuid);
110 } else {
111 zfcp_dbf_outd(&p, NULL, dump->data, dump->size, dump->offset,
112 dump->total_size);
113 if ((dump->offset + dump->size) == dump->total_size)
114 p += sprintf(p, "\n");
115 }
116 return p - out_buf;
117 }
118
119 /**
120 * zfcp_hba_dbf_event_fsf_response - trace event for request completion
121 * @fsf_req: request that has been completed
122 */
123 void zfcp_hba_dbf_event_fsf_response(struct zfcp_fsf_req *fsf_req)
124 {
125 struct zfcp_adapter *adapter = fsf_req->adapter;
126 struct fsf_qtcb *qtcb = fsf_req->qtcb;
127 union fsf_prot_status_qual *prot_status_qual =
128 &qtcb->prefix.prot_status_qual;
129 union fsf_status_qual *fsf_status_qual = &qtcb->header.fsf_status_qual;
130 struct scsi_cmnd *scsi_cmnd;
131 struct zfcp_port *port;
132 struct zfcp_unit *unit;
133 struct zfcp_send_els *send_els;
134 struct zfcp_hba_dbf_record *rec = &adapter->hba_dbf_buf;
135 struct zfcp_hba_dbf_record_response *response = &rec->u.response;
136 int level;
137 unsigned long flags;
138
139 spin_lock_irqsave(&adapter->hba_dbf_lock, flags);
140 memset(rec, 0, sizeof(*rec));
141 strncpy(rec->tag, "resp", ZFCP_DBF_TAG_SIZE);
142
143 if ((qtcb->prefix.prot_status != FSF_PROT_GOOD) &&
144 (qtcb->prefix.prot_status != FSF_PROT_FSF_STATUS_PRESENTED)) {
145 strncpy(rec->tag2, "perr", ZFCP_DBF_TAG_SIZE);
146 level = 1;
147 } else if (qtcb->header.fsf_status != FSF_GOOD) {
148 strncpy(rec->tag2, "ferr", ZFCP_DBF_TAG_SIZE);
149 level = 1;
150 } else if ((fsf_req->fsf_command == FSF_QTCB_OPEN_PORT_WITH_DID) ||
151 (fsf_req->fsf_command == FSF_QTCB_OPEN_LUN)) {
152 strncpy(rec->tag2, "open", ZFCP_DBF_TAG_SIZE);
153 level = 4;
154 } else if (qtcb->header.log_length) {
155 strncpy(rec->tag2, "qtcb", ZFCP_DBF_TAG_SIZE);
156 level = 5;
157 } else {
158 strncpy(rec->tag2, "norm", ZFCP_DBF_TAG_SIZE);
159 level = 6;
160 }
161
162 response->fsf_command = fsf_req->fsf_command;
163 response->fsf_reqid = (unsigned long)fsf_req;
164 response->fsf_seqno = fsf_req->seq_no;
165 response->fsf_issued = fsf_req->issued;
166 response->fsf_prot_status = qtcb->prefix.prot_status;
167 response->fsf_status = qtcb->header.fsf_status;
168 memcpy(response->fsf_prot_status_qual,
169 prot_status_qual, FSF_PROT_STATUS_QUAL_SIZE);
170 memcpy(response->fsf_status_qual,
171 fsf_status_qual, FSF_STATUS_QUALIFIER_SIZE);
172 response->fsf_req_status = fsf_req->status;
173 response->sbal_first = fsf_req->sbal_first;
174 response->sbal_last = fsf_req->sbal_last;
175 response->sbal_response = fsf_req->sbal_response;
176 response->pool = fsf_req->pool != NULL;
177 response->erp_action = (unsigned long)fsf_req->erp_action;
178
179 switch (fsf_req->fsf_command) {
180 case FSF_QTCB_FCP_CMND:
181 if (fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
182 break;
183 scsi_cmnd = (struct scsi_cmnd *)fsf_req->data;
184 if (scsi_cmnd) {
185 response->u.fcp.cmnd = (unsigned long)scsi_cmnd;
186 response->u.fcp.serial = scsi_cmnd->serial_number;
187 }
188 break;
189
190 case FSF_QTCB_OPEN_PORT_WITH_DID:
191 case FSF_QTCB_CLOSE_PORT:
192 case FSF_QTCB_CLOSE_PHYSICAL_PORT:
193 port = (struct zfcp_port *)fsf_req->data;
194 response->u.port.wwpn = port->wwpn;
195 response->u.port.d_id = port->d_id;
196 response->u.port.port_handle = qtcb->header.port_handle;
197 break;
198
199 case FSF_QTCB_OPEN_LUN:
200 case FSF_QTCB_CLOSE_LUN:
201 unit = (struct zfcp_unit *)fsf_req->data;
202 port = unit->port;
203 response->u.unit.wwpn = port->wwpn;
204 response->u.unit.fcp_lun = unit->fcp_lun;
205 response->u.unit.port_handle = qtcb->header.port_handle;
206 response->u.unit.lun_handle = qtcb->header.lun_handle;
207 break;
208
209 case FSF_QTCB_SEND_ELS:
210 send_els = (struct zfcp_send_els *)fsf_req->data;
211 response->u.els.d_id = qtcb->bottom.support.d_id;
212 response->u.els.ls_code = send_els->ls_code >> 24;
213 break;
214
215 case FSF_QTCB_ABORT_FCP_CMND:
216 case FSF_QTCB_SEND_GENERIC:
217 case FSF_QTCB_EXCHANGE_CONFIG_DATA:
218 case FSF_QTCB_EXCHANGE_PORT_DATA:
219 case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
220 case FSF_QTCB_UPLOAD_CONTROL_FILE:
221 break;
222 }
223
224 debug_event(adapter->hba_dbf, level, rec, sizeof(*rec));
225
226 /* have fcp channel microcode fixed to use as little as possible */
227 if (fsf_req->fsf_command != FSF_QTCB_FCP_CMND) {
228 /* adjust length skipping trailing zeros */
229 char *buf = (char *)qtcb + qtcb->header.log_start;
230 int len = qtcb->header.log_length;
231 for (; len && !buf[len - 1]; len--);
232 zfcp_dbf_hexdump(adapter->hba_dbf, rec, sizeof(*rec), level,
233 buf, len);
234 }
235
236 spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags);
237 }
238
239 /**
240 * zfcp_hba_dbf_event_fsf_unsol - trace event for an unsolicited status buffer
241 * @tag: tag indicating which kind of unsolicited status has been received
242 * @adapter: adapter that has issued the unsolicited status buffer
243 * @status_buffer: buffer containing payload of unsolicited status
244 */
245 void zfcp_hba_dbf_event_fsf_unsol(const char *tag, struct zfcp_adapter *adapter,
246 struct fsf_status_read_buffer *status_buffer)
247 {
248 struct zfcp_hba_dbf_record *rec = &adapter->hba_dbf_buf;
249 unsigned long flags;
250
251 spin_lock_irqsave(&adapter->hba_dbf_lock, flags);
252 memset(rec, 0, sizeof(*rec));
253 strncpy(rec->tag, "stat", ZFCP_DBF_TAG_SIZE);
254 strncpy(rec->tag2, tag, ZFCP_DBF_TAG_SIZE);
255
256 rec->u.status.failed = atomic_read(&adapter->stat_miss);
257 if (status_buffer != NULL) {
258 rec->u.status.status_type = status_buffer->status_type;
259 rec->u.status.status_subtype = status_buffer->status_subtype;
260 memcpy(&rec->u.status.queue_designator,
261 &status_buffer->queue_designator,
262 sizeof(struct fsf_queue_designator));
263
264 switch (status_buffer->status_type) {
265 case FSF_STATUS_READ_SENSE_DATA_AVAIL:
266 rec->u.status.payload_size =
267 ZFCP_DBF_UNSOL_PAYLOAD_SENSE_DATA_AVAIL;
268 break;
269
270 case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
271 rec->u.status.payload_size =
272 ZFCP_DBF_UNSOL_PAYLOAD_BIT_ERROR_THRESHOLD;
273 break;
274
275 case FSF_STATUS_READ_LINK_DOWN:
276 switch (status_buffer->status_subtype) {
277 case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
278 case FSF_STATUS_READ_SUB_FDISC_FAILED:
279 rec->u.status.payload_size =
280 sizeof(struct fsf_link_down_info);
281 }
282 break;
283
284 case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
285 rec->u.status.payload_size =
286 ZFCP_DBF_UNSOL_PAYLOAD_FEATURE_UPDATE_ALERT;
287 break;
288 }
289 memcpy(&rec->u.status.payload,
290 &status_buffer->payload, rec->u.status.payload_size);
291 }
292
293 debug_event(adapter->hba_dbf, 2, rec, sizeof(*rec));
294 spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags);
295 }
296
297 /**
298 * zfcp_hba_dbf_event_qdio - trace event for QDIO related failure
299 * @adapter: adapter affected by this QDIO related event
300 * @qdio_error: as passed by qdio module
301 * @sbal_index: first buffer with error condition, as passed by qdio module
302 * @sbal_count: number of buffers affected, as passed by qdio module
303 */
304 void zfcp_hba_dbf_event_qdio(struct zfcp_adapter *adapter,
305 unsigned int qdio_error, int sbal_index,
306 int sbal_count)
307 {
308 struct zfcp_hba_dbf_record *r = &adapter->hba_dbf_buf;
309 unsigned long flags;
310
311 spin_lock_irqsave(&adapter->hba_dbf_lock, flags);
312 memset(r, 0, sizeof(*r));
313 strncpy(r->tag, "qdio", ZFCP_DBF_TAG_SIZE);
314 r->u.qdio.qdio_error = qdio_error;
315 r->u.qdio.sbal_index = sbal_index;
316 r->u.qdio.sbal_count = sbal_count;
317 debug_event(adapter->hba_dbf, 0, r, sizeof(*r));
318 spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags);
319 }
320
321 static void zfcp_hba_dbf_view_response(char **p,
322 struct zfcp_hba_dbf_record_response *r)
323 {
324 struct timespec t;
325
326 zfcp_dbf_out(p, "fsf_command", "0x%08x", r->fsf_command);
327 zfcp_dbf_out(p, "fsf_reqid", "0x%0Lx", r->fsf_reqid);
328 zfcp_dbf_out(p, "fsf_seqno", "0x%08x", r->fsf_seqno);
329 zfcp_dbf_timestamp(r->fsf_issued, &t);
330 zfcp_dbf_out(p, "fsf_issued", "%011lu:%06lu", t.tv_sec, t.tv_nsec);
331 zfcp_dbf_out(p, "fsf_prot_status", "0x%08x", r->fsf_prot_status);
332 zfcp_dbf_out(p, "fsf_status", "0x%08x", r->fsf_status);
333 zfcp_dbf_outd(p, "fsf_prot_status_qual", r->fsf_prot_status_qual,
334 FSF_PROT_STATUS_QUAL_SIZE, 0, FSF_PROT_STATUS_QUAL_SIZE);
335 zfcp_dbf_outd(p, "fsf_status_qual", r->fsf_status_qual,
336 FSF_STATUS_QUALIFIER_SIZE, 0, FSF_STATUS_QUALIFIER_SIZE);
337 zfcp_dbf_out(p, "fsf_req_status", "0x%08x", r->fsf_req_status);
338 zfcp_dbf_out(p, "sbal_first", "0x%02x", r->sbal_first);
339 zfcp_dbf_out(p, "sbal_last", "0x%02x", r->sbal_last);
340 zfcp_dbf_out(p, "sbal_response", "0x%02x", r->sbal_response);
341 zfcp_dbf_out(p, "pool", "0x%02x", r->pool);
342
343 switch (r->fsf_command) {
344 case FSF_QTCB_FCP_CMND:
345 if (r->fsf_req_status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
346 break;
347 zfcp_dbf_out(p, "scsi_cmnd", "0x%0Lx", r->u.fcp.cmnd);
348 zfcp_dbf_out(p, "scsi_serial", "0x%016Lx", r->u.fcp.serial);
349 break;
350
351 case FSF_QTCB_OPEN_PORT_WITH_DID:
352 case FSF_QTCB_CLOSE_PORT:
353 case FSF_QTCB_CLOSE_PHYSICAL_PORT:
354 zfcp_dbf_out(p, "wwpn", "0x%016Lx", r->u.port.wwpn);
355 zfcp_dbf_out(p, "d_id", "0x%06x", r->u.port.d_id);
356 zfcp_dbf_out(p, "port_handle", "0x%08x", r->u.port.port_handle);
357 break;
358
359 case FSF_QTCB_OPEN_LUN:
360 case FSF_QTCB_CLOSE_LUN:
361 zfcp_dbf_out(p, "wwpn", "0x%016Lx", r->u.unit.wwpn);
362 zfcp_dbf_out(p, "fcp_lun", "0x%016Lx", r->u.unit.fcp_lun);
363 zfcp_dbf_out(p, "port_handle", "0x%08x", r->u.unit.port_handle);
364 zfcp_dbf_out(p, "lun_handle", "0x%08x", r->u.unit.lun_handle);
365 break;
366
367 case FSF_QTCB_SEND_ELS:
368 zfcp_dbf_out(p, "d_id", "0x%06x", r->u.els.d_id);
369 zfcp_dbf_out(p, "ls_code", "0x%02x", r->u.els.ls_code);
370 break;
371
372 case FSF_QTCB_ABORT_FCP_CMND:
373 case FSF_QTCB_SEND_GENERIC:
374 case FSF_QTCB_EXCHANGE_CONFIG_DATA:
375 case FSF_QTCB_EXCHANGE_PORT_DATA:
376 case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
377 case FSF_QTCB_UPLOAD_CONTROL_FILE:
378 break;
379 }
380 }
381
382 static void zfcp_hba_dbf_view_status(char **p,
383 struct zfcp_hba_dbf_record_status *r)
384 {
385 zfcp_dbf_out(p, "failed", "0x%02x", r->failed);
386 zfcp_dbf_out(p, "status_type", "0x%08x", r->status_type);
387 zfcp_dbf_out(p, "status_subtype", "0x%08x", r->status_subtype);
388 zfcp_dbf_outd(p, "queue_designator", (char *)&r->queue_designator,
389 sizeof(struct fsf_queue_designator), 0,
390 sizeof(struct fsf_queue_designator));
391 zfcp_dbf_outd(p, "payload", (char *)&r->payload, r->payload_size, 0,
392 r->payload_size);
393 }
394
395 static void zfcp_hba_dbf_view_qdio(char **p, struct zfcp_hba_dbf_record_qdio *r)
396 {
397 zfcp_dbf_out(p, "qdio_error", "0x%08x", r->qdio_error);
398 zfcp_dbf_out(p, "sbal_index", "0x%02x", r->sbal_index);
399 zfcp_dbf_out(p, "sbal_count", "0x%02x", r->sbal_count);
400 }
401
402 static int zfcp_hba_dbf_view_format(debug_info_t *id, struct debug_view *view,
403 char *out_buf, const char *in_buf)
404 {
405 struct zfcp_hba_dbf_record *r = (struct zfcp_hba_dbf_record *)in_buf;
406 char *p = out_buf;
407
408 if (strncmp(r->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
409 return 0;
410
411 zfcp_dbf_tag(&p, "tag", r->tag);
412 if (isalpha(r->tag2[0]))
413 zfcp_dbf_tag(&p, "tag2", r->tag2);
414
415 if (strncmp(r->tag, "resp", ZFCP_DBF_TAG_SIZE) == 0)
416 zfcp_hba_dbf_view_response(&p, &r->u.response);
417 else if (strncmp(r->tag, "stat", ZFCP_DBF_TAG_SIZE) == 0)
418 zfcp_hba_dbf_view_status(&p, &r->u.status);
419 else if (strncmp(r->tag, "qdio", ZFCP_DBF_TAG_SIZE) == 0)
420 zfcp_hba_dbf_view_qdio(&p, &r->u.qdio);
421
422 p += sprintf(p, "\n");
423 return p - out_buf;
424 }
425
426 static struct debug_view zfcp_hba_dbf_view = {
427 "structured",
428 NULL,
429 &zfcp_dbf_view_header,
430 &zfcp_hba_dbf_view_format,
431 NULL,
432 NULL
433 };
434
435 static const char *zfcp_rec_dbf_tags[] = {
436 [ZFCP_REC_DBF_ID_THREAD] = "thread",
437 [ZFCP_REC_DBF_ID_TARGET] = "target",
438 [ZFCP_REC_DBF_ID_TRIGGER] = "trigger",
439 [ZFCP_REC_DBF_ID_ACTION] = "action",
440 };
441
442 static const char *zfcp_rec_dbf_ids[] = {
443 [1] = "new",
444 [2] = "ready",
445 [3] = "kill",
446 [4] = "down sleep",
447 [5] = "down wakeup",
448 [6] = "down sleep ecd",
449 [7] = "down wakeup ecd",
450 [8] = "down sleep epd",
451 [9] = "down wakeup epd",
452 [10] = "online",
453 [11] = "operational",
454 [12] = "scsi slave destroy",
455 [13] = "propagate failed adapter",
456 [14] = "propagate failed port",
457 [15] = "block adapter",
458 [16] = "unblock adapter",
459 [17] = "block port",
460 [18] = "unblock port",
461 [19] = "block unit",
462 [20] = "unblock unit",
463 [21] = "unit recovery failed",
464 [22] = "port recovery failed",
465 [23] = "adapter recovery failed",
466 [24] = "qdio queues down",
467 [25] = "p2p failed",
468 [26] = "nameserver lookup failed",
469 [27] = "nameserver port failed",
470 [28] = "link up",
471 [29] = "link down",
472 [30] = "link up status read",
473 [31] = "open port failed",
474 [32] = "open port failed",
475 [33] = "close port",
476 [34] = "open unit failed",
477 [35] = "exclusive open unit failed",
478 [36] = "shared open unit failed",
479 [37] = "link down",
480 [38] = "link down status read no link",
481 [39] = "link down status read fdisc login",
482 [40] = "link down status read firmware update",
483 [41] = "link down status read unknown reason",
484 [42] = "link down ecd incomplete",
485 [43] = "link down epd incomplete",
486 [44] = "sysfs adapter recovery",
487 [45] = "sysfs port recovery",
488 [46] = "sysfs unit recovery",
489 [47] = "port boxed abort",
490 [48] = "unit boxed abort",
491 [49] = "port boxed ct",
492 [50] = "port boxed close physical",
493 [51] = "port boxed open unit",
494 [52] = "port boxed close unit",
495 [53] = "port boxed fcp",
496 [54] = "unit boxed fcp",
497 [55] = "port access denied",
498 [56] = "",
499 [57] = "",
500 [58] = "",
501 [59] = "unit access denied",
502 [60] = "shared unit access denied open unit",
503 [61] = "",
504 [62] = "request timeout",
505 [63] = "adisc link test reject or timeout",
506 [64] = "adisc link test d_id changed",
507 [65] = "adisc link test failed",
508 [66] = "recovery out of memory",
509 [67] = "adapter recovery repeated after state change",
510 [68] = "port recovery repeated after state change",
511 [69] = "unit recovery repeated after state change",
512 [70] = "port recovery follow-up after successful adapter recovery",
513 [71] = "adapter recovery escalation after failed adapter recovery",
514 [72] = "port recovery follow-up after successful physical port "
515 "recovery",
516 [73] = "adapter recovery escalation after failed physical port "
517 "recovery",
518 [74] = "unit recovery follow-up after successful port recovery",
519 [75] = "physical port recovery escalation after failed port "
520 "recovery",
521 [76] = "port recovery escalation after failed unit recovery",
522 [77] = "recovery opening nameserver port",
523 [78] = "duplicate request id",
524 [79] = "link down",
525 [80] = "exclusive read-only unit access unsupported",
526 [81] = "shared read-write unit access unsupported",
527 [82] = "incoming rscn",
528 [83] = "incoming wwpn",
529 [84] = "",
530 [85] = "online",
531 [86] = "offline",
532 [87] = "ccw device gone",
533 [88] = "ccw device no path",
534 [89] = "ccw device operational",
535 [90] = "ccw device shutdown",
536 [91] = "sysfs port addition",
537 [92] = "sysfs port removal",
538 [93] = "sysfs adapter recovery",
539 [94] = "sysfs unit addition",
540 [95] = "sysfs unit removal",
541 [96] = "sysfs port recovery",
542 [97] = "sysfs unit recovery",
543 [98] = "sequence number mismatch",
544 [99] = "link up",
545 [100] = "error state",
546 [101] = "status read physical port closed",
547 [102] = "link up status read",
548 [103] = "too many failed status read buffers",
549 [104] = "port handle not valid abort",
550 [105] = "lun handle not valid abort",
551 [106] = "port handle not valid ct",
552 [107] = "port handle not valid close port",
553 [108] = "port handle not valid close physical port",
554 [109] = "port handle not valid open unit",
555 [110] = "port handle not valid close unit",
556 [111] = "lun handle not valid close unit",
557 [112] = "port handle not valid fcp",
558 [113] = "lun handle not valid fcp",
559 [114] = "handle mismatch fcp",
560 [115] = "lun not valid fcp",
561 [116] = "qdio send failed",
562 [117] = "version mismatch",
563 [118] = "incompatible qtcb type",
564 [119] = "unknown protocol status",
565 [120] = "unknown fsf command",
566 [121] = "no recommendation for status qualifier",
567 [122] = "status read physical port closed in error",
568 [123] = "fc service class not supported",
569 [124] = "",
570 [125] = "need newer zfcp",
571 [126] = "need newer microcode",
572 [127] = "arbitrated loop not supported",
573 [128] = "unknown topology",
574 [129] = "qtcb size mismatch",
575 [130] = "unknown fsf status ecd",
576 [131] = "fcp request too big",
577 [132] = "",
578 [133] = "data direction not valid fcp",
579 [134] = "command length not valid fcp",
580 [135] = "status read act update",
581 [136] = "status read cfdc update",
582 [137] = "hbaapi port open",
583 [138] = "hbaapi unit open",
584 [139] = "hbaapi unit shutdown",
585 [140] = "qdio error outbound",
586 [141] = "scsi host reset",
587 [142] = "dismissing fsf request for recovery action",
588 [143] = "recovery action timed out",
589 [144] = "recovery action gone",
590 [145] = "recovery action being processed",
591 [146] = "recovery action ready for next step",
592 [147] = "qdio error inbound",
593 [148] = "nameserver needed for port scan",
594 [149] = "port scan",
595 [150] = "ptp attach",
596 [151] = "port validation failed",
597 };
598
599 static int zfcp_rec_dbf_view_format(debug_info_t *id, struct debug_view *view,
600 char *buf, const char *_rec)
601 {
602 struct zfcp_rec_dbf_record *r = (struct zfcp_rec_dbf_record *)_rec;
603 char *p = buf;
604
605 zfcp_dbf_outs(&p, "tag", zfcp_rec_dbf_tags[r->id]);
606 zfcp_dbf_outs(&p, "hint", zfcp_rec_dbf_ids[r->id2]);
607 zfcp_dbf_out(&p, "id", "%d", r->id2);
608 switch (r->id) {
609 case ZFCP_REC_DBF_ID_THREAD:
610 zfcp_dbf_out(&p, "total", "%d", r->u.thread.total);
611 zfcp_dbf_out(&p, "ready", "%d", r->u.thread.ready);
612 zfcp_dbf_out(&p, "running", "%d", r->u.thread.running);
613 break;
614 case ZFCP_REC_DBF_ID_TARGET:
615 zfcp_dbf_out(&p, "reference", "0x%016Lx", r->u.target.ref);
616 zfcp_dbf_out(&p, "status", "0x%08x", r->u.target.status);
617 zfcp_dbf_out(&p, "erp_count", "%d", r->u.target.erp_count);
618 zfcp_dbf_out(&p, "d_id", "0x%06x", r->u.target.d_id);
619 zfcp_dbf_out(&p, "wwpn", "0x%016Lx", r->u.target.wwpn);
620 zfcp_dbf_out(&p, "fcp_lun", "0x%016Lx", r->u.target.fcp_lun);
621 break;
622 case ZFCP_REC_DBF_ID_TRIGGER:
623 zfcp_dbf_out(&p, "reference", "0x%016Lx", r->u.trigger.ref);
624 zfcp_dbf_out(&p, "erp_action", "0x%016Lx", r->u.trigger.action);
625 zfcp_dbf_out(&p, "requested", "%d", r->u.trigger.want);
626 zfcp_dbf_out(&p, "executed", "%d", r->u.trigger.need);
627 zfcp_dbf_out(&p, "wwpn", "0x%016Lx", r->u.trigger.wwpn);
628 zfcp_dbf_out(&p, "fcp_lun", "0x%016Lx", r->u.trigger.fcp_lun);
629 zfcp_dbf_out(&p, "adapter_status", "0x%08x", r->u.trigger.as);
630 zfcp_dbf_out(&p, "port_status", "0x%08x", r->u.trigger.ps);
631 zfcp_dbf_out(&p, "unit_status", "0x%08x", r->u.trigger.us);
632 break;
633 case ZFCP_REC_DBF_ID_ACTION:
634 zfcp_dbf_out(&p, "erp_action", "0x%016Lx", r->u.action.action);
635 zfcp_dbf_out(&p, "fsf_req", "0x%016Lx", r->u.action.fsf_req);
636 zfcp_dbf_out(&p, "status", "0x%08Lx", r->u.action.status);
637 zfcp_dbf_out(&p, "step", "0x%08Lx", r->u.action.step);
638 break;
639 }
640 p += sprintf(p, "\n");
641 return p - buf;
642 }
643
644 static struct debug_view zfcp_rec_dbf_view = {
645 "structured",
646 NULL,
647 &zfcp_dbf_view_header,
648 &zfcp_rec_dbf_view_format,
649 NULL,
650 NULL
651 };
652
653 /**
654 * zfcp_rec_dbf_event_thread - trace event related to recovery thread operation
655 * @id2: identifier for event
656 * @adapter: adapter
657 * This function assumes that the caller is holding erp_lock.
658 */
659 void zfcp_rec_dbf_event_thread(u8 id2, struct zfcp_adapter *adapter)
660 {
661 struct zfcp_rec_dbf_record *r = &adapter->rec_dbf_buf;
662 unsigned long flags = 0;
663 struct list_head *entry;
664 unsigned ready = 0, running = 0, total;
665
666 list_for_each(entry, &adapter->erp_ready_head)
667 ready++;
668 list_for_each(entry, &adapter->erp_running_head)
669 running++;
670 total = adapter->erp_total_count;
671
672 spin_lock_irqsave(&adapter->rec_dbf_lock, flags);
673 memset(r, 0, sizeof(*r));
674 r->id = ZFCP_REC_DBF_ID_THREAD;
675 r->id2 = id2;
676 r->u.thread.total = total;
677 r->u.thread.ready = ready;
678 r->u.thread.running = running;
679 debug_event(adapter->rec_dbf, 6, r, sizeof(*r));
680 spin_unlock_irqrestore(&adapter->rec_dbf_lock, flags);
681 }
682
683 /**
684 * zfcp_rec_dbf_event_thread - trace event related to recovery thread operation
685 * @id2: identifier for event
686 * @adapter: adapter
687 * This function assumes that the caller does not hold erp_lock.
688 */
689 void zfcp_rec_dbf_event_thread_lock(u8 id2, struct zfcp_adapter *adapter)
690 {
691 unsigned long flags;
692
693 read_lock_irqsave(&adapter->erp_lock, flags);
694 zfcp_rec_dbf_event_thread(id2, adapter);
695 read_unlock_irqrestore(&adapter->erp_lock, flags);
696 }
697
698 static void zfcp_rec_dbf_event_target(u8 id2, void *ref,
699 struct zfcp_adapter *adapter,
700 atomic_t *status, atomic_t *erp_count,
701 u64 wwpn, u32 d_id, u64 fcp_lun)
702 {
703 struct zfcp_rec_dbf_record *r = &adapter->rec_dbf_buf;
704 unsigned long flags;
705
706 spin_lock_irqsave(&adapter->rec_dbf_lock, flags);
707 memset(r, 0, sizeof(*r));
708 r->id = ZFCP_REC_DBF_ID_TARGET;
709 r->id2 = id2;
710 r->u.target.ref = (unsigned long)ref;
711 r->u.target.status = atomic_read(status);
712 r->u.target.wwpn = wwpn;
713 r->u.target.d_id = d_id;
714 r->u.target.fcp_lun = fcp_lun;
715 r->u.target.erp_count = atomic_read(erp_count);
716 debug_event(adapter->rec_dbf, 3, r, sizeof(*r));
717 spin_unlock_irqrestore(&adapter->rec_dbf_lock, flags);
718 }
719
720 /**
721 * zfcp_rec_dbf_event_adapter - trace event for adapter state change
722 * @id: identifier for trigger of state change
723 * @ref: additional reference (e.g. request)
724 * @adapter: adapter
725 */
726 void zfcp_rec_dbf_event_adapter(u8 id, void *ref, struct zfcp_adapter *adapter)
727 {
728 zfcp_rec_dbf_event_target(id, ref, adapter, &adapter->status,
729 &adapter->erp_counter, 0, 0, 0);
730 }
731
732 /**
733 * zfcp_rec_dbf_event_port - trace event for port state change
734 * @id: identifier for trigger of state change
735 * @ref: additional reference (e.g. request)
736 * @port: port
737 */
738 void zfcp_rec_dbf_event_port(u8 id, void *ref, struct zfcp_port *port)
739 {
740 struct zfcp_adapter *adapter = port->adapter;
741
742 zfcp_rec_dbf_event_target(id, ref, adapter, &port->status,
743 &port->erp_counter, port->wwpn, port->d_id,
744 0);
745 }
746
747 /**
748 * zfcp_rec_dbf_event_unit - trace event for unit state change
749 * @id: identifier for trigger of state change
750 * @ref: additional reference (e.g. request)
751 * @unit: unit
752 */
753 void zfcp_rec_dbf_event_unit(u8 id, void *ref, struct zfcp_unit *unit)
754 {
755 struct zfcp_port *port = unit->port;
756 struct zfcp_adapter *adapter = port->adapter;
757
758 zfcp_rec_dbf_event_target(id, ref, adapter, &unit->status,
759 &unit->erp_counter, port->wwpn, port->d_id,
760 unit->fcp_lun);
761 }
762
763 /**
764 * zfcp_rec_dbf_event_trigger - trace event for triggered error recovery
765 * @id2: identifier for error recovery trigger
766 * @ref: additional reference (e.g. request)
767 * @want: originally requested error recovery action
768 * @need: error recovery action actually initiated
769 * @action: address of error recovery action struct
770 * @adapter: adapter
771 * @port: port
772 * @unit: unit
773 */
774 void zfcp_rec_dbf_event_trigger(u8 id2, void *ref, u8 want, u8 need,
775 void *action, struct zfcp_adapter *adapter,
776 struct zfcp_port *port, struct zfcp_unit *unit)
777 {
778 struct zfcp_rec_dbf_record *r = &adapter->rec_dbf_buf;
779 unsigned long flags;
780
781 spin_lock_irqsave(&adapter->rec_dbf_lock, flags);
782 memset(r, 0, sizeof(*r));
783 r->id = ZFCP_REC_DBF_ID_TRIGGER;
784 r->id2 = id2;
785 r->u.trigger.ref = (unsigned long)ref;
786 r->u.trigger.want = want;
787 r->u.trigger.need = need;
788 r->u.trigger.action = (unsigned long)action;
789 r->u.trigger.as = atomic_read(&adapter->status);
790 if (port) {
791 r->u.trigger.ps = atomic_read(&port->status);
792 r->u.trigger.wwpn = port->wwpn;
793 }
794 if (unit) {
795 r->u.trigger.us = atomic_read(&unit->status);
796 r->u.trigger.fcp_lun = unit->fcp_lun;
797 }
798 debug_event(adapter->rec_dbf, action ? 1 : 4, r, sizeof(*r));
799 spin_unlock_irqrestore(&adapter->rec_dbf_lock, flags);
800 }
801
802 /**
803 * zfcp_rec_dbf_event_action - trace event showing progress of recovery action
804 * @id2: identifier
805 * @erp_action: error recovery action struct pointer
806 */
807 void zfcp_rec_dbf_event_action(u8 id2, struct zfcp_erp_action *erp_action)
808 {
809 struct zfcp_adapter *adapter = erp_action->adapter;
810 struct zfcp_rec_dbf_record *r = &adapter->rec_dbf_buf;
811 unsigned long flags;
812
813 spin_lock_irqsave(&adapter->rec_dbf_lock, flags);
814 memset(r, 0, sizeof(*r));
815 r->id = ZFCP_REC_DBF_ID_ACTION;
816 r->id2 = id2;
817 r->u.action.action = (unsigned long)erp_action;
818 r->u.action.status = erp_action->status;
819 r->u.action.step = erp_action->step;
820 r->u.action.fsf_req = (unsigned long)erp_action->fsf_req;
821 debug_event(adapter->rec_dbf, 5, r, sizeof(*r));
822 spin_unlock_irqrestore(&adapter->rec_dbf_lock, flags);
823 }
824
825 /**
826 * zfcp_san_dbf_event_ct_request - trace event for issued CT request
827 * @fsf_req: request containing issued CT data
828 */
829 void zfcp_san_dbf_event_ct_request(struct zfcp_fsf_req *fsf_req)
830 {
831 struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data;
832 struct zfcp_port *port = ct->port;
833 struct zfcp_adapter *adapter = port->adapter;
834 struct ct_hdr *hdr = zfcp_sg_to_address(ct->req);
835 struct zfcp_san_dbf_record *r = &adapter->san_dbf_buf;
836 struct zfcp_san_dbf_record_ct_request *oct = &r->u.ct_req;
837 unsigned long flags;
838
839 spin_lock_irqsave(&adapter->san_dbf_lock, flags);
840 memset(r, 0, sizeof(*r));
841 strncpy(r->tag, "octc", ZFCP_DBF_TAG_SIZE);
842 r->fsf_reqid = (unsigned long)fsf_req;
843 r->fsf_seqno = fsf_req->seq_no;
844 r->s_id = fc_host_port_id(adapter->scsi_host);
845 r->d_id = port->d_id;
846 oct->cmd_req_code = hdr->cmd_rsp_code;
847 oct->revision = hdr->revision;
848 oct->gs_type = hdr->gs_type;
849 oct->gs_subtype = hdr->gs_subtype;
850 oct->options = hdr->options;
851 oct->max_res_size = hdr->max_res_size;
852 oct->len = min((int)ct->req->length - (int)sizeof(struct ct_hdr),
853 ZFCP_DBF_CT_PAYLOAD);
854 memcpy(oct->payload, (void *)hdr + sizeof(struct ct_hdr), oct->len);
855 debug_event(adapter->san_dbf, 3, r, sizeof(*r));
856 spin_unlock_irqrestore(&adapter->san_dbf_lock, flags);
857 }
858
859 /**
860 * zfcp_san_dbf_event_ct_response - trace event for completion of CT request
861 * @fsf_req: request containing CT response
862 */
863 void zfcp_san_dbf_event_ct_response(struct zfcp_fsf_req *fsf_req)
864 {
865 struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data;
866 struct zfcp_port *port = ct->port;
867 struct zfcp_adapter *adapter = port->adapter;
868 struct ct_hdr *hdr = zfcp_sg_to_address(ct->resp);
869 struct zfcp_san_dbf_record *r = &adapter->san_dbf_buf;
870 struct zfcp_san_dbf_record_ct_response *rct = &r->u.ct_resp;
871 unsigned long flags;
872
873 spin_lock_irqsave(&adapter->san_dbf_lock, flags);
874 memset(r, 0, sizeof(*r));
875 strncpy(r->tag, "rctc", ZFCP_DBF_TAG_SIZE);
876 r->fsf_reqid = (unsigned long)fsf_req;
877 r->fsf_seqno = fsf_req->seq_no;
878 r->s_id = port->d_id;
879 r->d_id = fc_host_port_id(adapter->scsi_host);
880 rct->cmd_rsp_code = hdr->cmd_rsp_code;
881 rct->revision = hdr->revision;
882 rct->reason_code = hdr->reason_code;
883 rct->expl = hdr->reason_code_expl;
884 rct->vendor_unique = hdr->vendor_unique;
885 rct->len = min((int)ct->resp->length - (int)sizeof(struct ct_hdr),
886 ZFCP_DBF_CT_PAYLOAD);
887 memcpy(rct->payload, (void *)hdr + sizeof(struct ct_hdr), rct->len);
888 debug_event(adapter->san_dbf, 3, r, sizeof(*r));
889 spin_unlock_irqrestore(&adapter->san_dbf_lock, flags);
890 }
891
892 static void zfcp_san_dbf_event_els(const char *tag, int level,
893 struct zfcp_fsf_req *fsf_req, u32 s_id,
894 u32 d_id, u8 ls_code, void *buffer,
895 int buflen)
896 {
897 struct zfcp_adapter *adapter = fsf_req->adapter;
898 struct zfcp_san_dbf_record *rec = &adapter->san_dbf_buf;
899 unsigned long flags;
900
901 spin_lock_irqsave(&adapter->san_dbf_lock, flags);
902 memset(rec, 0, sizeof(*rec));
903 strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
904 rec->fsf_reqid = (unsigned long)fsf_req;
905 rec->fsf_seqno = fsf_req->seq_no;
906 rec->s_id = s_id;
907 rec->d_id = d_id;
908 rec->u.els.ls_code = ls_code;
909 debug_event(adapter->san_dbf, level, rec, sizeof(*rec));
910 zfcp_dbf_hexdump(adapter->san_dbf, rec, sizeof(*rec), level,
911 buffer, min(buflen, ZFCP_DBF_ELS_MAX_PAYLOAD));
912 spin_unlock_irqrestore(&adapter->san_dbf_lock, flags);
913 }
914
915 /**
916 * zfcp_san_dbf_event_els_request - trace event for issued ELS
917 * @fsf_req: request containing issued ELS
918 */
919 void zfcp_san_dbf_event_els_request(struct zfcp_fsf_req *fsf_req)
920 {
921 struct zfcp_send_els *els = (struct zfcp_send_els *)fsf_req->data;
922
923 zfcp_san_dbf_event_els("oels", 2, fsf_req,
924 fc_host_port_id(els->adapter->scsi_host),
925 els->d_id, *(u8 *) zfcp_sg_to_address(els->req),
926 zfcp_sg_to_address(els->req), els->req->length);
927 }
928
929 /**
930 * zfcp_san_dbf_event_els_response - trace event for completed ELS
931 * @fsf_req: request containing ELS response
932 */
933 void zfcp_san_dbf_event_els_response(struct zfcp_fsf_req *fsf_req)
934 {
935 struct zfcp_send_els *els = (struct zfcp_send_els *)fsf_req->data;
936
937 zfcp_san_dbf_event_els("rels", 2, fsf_req, els->d_id,
938 fc_host_port_id(els->adapter->scsi_host),
939 *(u8 *)zfcp_sg_to_address(els->req),
940 zfcp_sg_to_address(els->resp),
941 els->resp->length);
942 }
943
944 /**
945 * zfcp_san_dbf_event_incoming_els - trace event for incomig ELS
946 * @fsf_req: request containing unsolicited status buffer with incoming ELS
947 */
948 void zfcp_san_dbf_event_incoming_els(struct zfcp_fsf_req *fsf_req)
949 {
950 struct zfcp_adapter *adapter = fsf_req->adapter;
951 struct fsf_status_read_buffer *buf =
952 (struct fsf_status_read_buffer *)fsf_req->data;
953 int length = (int)buf->length -
954 (int)((void *)&buf->payload - (void *)buf);
955
956 zfcp_san_dbf_event_els("iels", 1, fsf_req, buf->d_id,
957 fc_host_port_id(adapter->scsi_host),
958 buf->payload.data[0], (void *)buf->payload.data,
959 length);
960 }
961
962 static int zfcp_san_dbf_view_format(debug_info_t *id, struct debug_view *view,
963 char *out_buf, const char *in_buf)
964 {
965 struct zfcp_san_dbf_record *r = (struct zfcp_san_dbf_record *)in_buf;
966 char *buffer = NULL;
967 int buflen = 0, total = 0;
968 char *p = out_buf;
969
970 if (strncmp(r->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
971 return 0;
972
973 zfcp_dbf_tag(&p, "tag", r->tag);
974 zfcp_dbf_out(&p, "fsf_reqid", "0x%0Lx", r->fsf_reqid);
975 zfcp_dbf_out(&p, "fsf_seqno", "0x%08x", r->fsf_seqno);
976 zfcp_dbf_out(&p, "s_id", "0x%06x", r->s_id);
977 zfcp_dbf_out(&p, "d_id", "0x%06x", r->d_id);
978
979 if (strncmp(r->tag, "octc", ZFCP_DBF_TAG_SIZE) == 0) {
980 struct zfcp_san_dbf_record_ct_request *ct = &r->u.ct_req;
981 zfcp_dbf_out(&p, "cmd_req_code", "0x%04x", ct->cmd_req_code);
982 zfcp_dbf_out(&p, "revision", "0x%02x", ct->revision);
983 zfcp_dbf_out(&p, "gs_type", "0x%02x", ct->gs_type);
984 zfcp_dbf_out(&p, "gs_subtype", "0x%02x", ct->gs_subtype);
985 zfcp_dbf_out(&p, "options", "0x%02x", ct->options);
986 zfcp_dbf_out(&p, "max_res_size", "0x%04x", ct->max_res_size);
987 total = ct->len;
988 buffer = ct->payload;
989 buflen = min(total, ZFCP_DBF_CT_PAYLOAD);
990 } else if (strncmp(r->tag, "rctc", ZFCP_DBF_TAG_SIZE) == 0) {
991 struct zfcp_san_dbf_record_ct_response *ct = &r->u.ct_resp;
992 zfcp_dbf_out(&p, "cmd_rsp_code", "0x%04x", ct->cmd_rsp_code);
993 zfcp_dbf_out(&p, "revision", "0x%02x", ct->revision);
994 zfcp_dbf_out(&p, "reason_code", "0x%02x", ct->reason_code);
995 zfcp_dbf_out(&p, "reason_code_expl", "0x%02x", ct->expl);
996 zfcp_dbf_out(&p, "vendor_unique", "0x%02x", ct->vendor_unique);
997 total = ct->len;
998 buffer = ct->payload;
999 buflen = min(total, ZFCP_DBF_CT_PAYLOAD);
1000 } else if (strncmp(r->tag, "oels", ZFCP_DBF_TAG_SIZE) == 0 ||
1001 strncmp(r->tag, "rels", ZFCP_DBF_TAG_SIZE) == 0 ||
1002 strncmp(r->tag, "iels", ZFCP_DBF_TAG_SIZE) == 0) {
1003 struct zfcp_san_dbf_record_els *els = &r->u.els;
1004 zfcp_dbf_out(&p, "ls_code", "0x%02x", els->ls_code);
1005 total = els->len;
1006 buffer = els->payload;
1007 buflen = min(total, ZFCP_DBF_ELS_PAYLOAD);
1008 }
1009
1010 zfcp_dbf_outd(&p, "payload", buffer, buflen, 0, total);
1011 if (buflen == total)
1012 p += sprintf(p, "\n");
1013
1014 return p - out_buf;
1015 }
1016
1017 static struct debug_view zfcp_san_dbf_view = {
1018 "structured",
1019 NULL,
1020 &zfcp_dbf_view_header,
1021 &zfcp_san_dbf_view_format,
1022 NULL,
1023 NULL
1024 };
1025
1026 static void zfcp_scsi_dbf_event(const char *tag, const char *tag2, int level,
1027 struct zfcp_adapter *adapter,
1028 struct scsi_cmnd *scsi_cmnd,
1029 struct zfcp_fsf_req *fsf_req,
1030 unsigned long old_req_id)
1031 {
1032 struct zfcp_scsi_dbf_record *rec = &adapter->scsi_dbf_buf;
1033 struct zfcp_dbf_dump *dump = (struct zfcp_dbf_dump *)rec;
1034 unsigned long flags;
1035 struct fcp_rsp_iu *fcp_rsp;
1036 char *fcp_rsp_info = NULL, *fcp_sns_info = NULL;
1037 int offset = 0, buflen = 0;
1038
1039 spin_lock_irqsave(&adapter->scsi_dbf_lock, flags);
1040 do {
1041 memset(rec, 0, sizeof(*rec));
1042 if (offset == 0) {
1043 strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
1044 strncpy(rec->tag2, tag2, ZFCP_DBF_TAG_SIZE);
1045 if (scsi_cmnd != NULL) {
1046 if (scsi_cmnd->device) {
1047 rec->scsi_id = scsi_cmnd->device->id;
1048 rec->scsi_lun = scsi_cmnd->device->lun;
1049 }
1050 rec->scsi_result = scsi_cmnd->result;
1051 rec->scsi_cmnd = (unsigned long)scsi_cmnd;
1052 rec->scsi_serial = scsi_cmnd->serial_number;
1053 memcpy(rec->scsi_opcode, scsi_cmnd->cmnd,
1054 min((int)scsi_cmnd->cmd_len,
1055 ZFCP_DBF_SCSI_OPCODE));
1056 rec->scsi_retries = scsi_cmnd->retries;
1057 rec->scsi_allowed = scsi_cmnd->allowed;
1058 }
1059 if (fsf_req != NULL) {
1060 fcp_rsp = (struct fcp_rsp_iu *)
1061 &(fsf_req->qtcb->bottom.io.fcp_rsp);
1062 fcp_rsp_info = (unsigned char *) &fcp_rsp[1];
1063 fcp_sns_info =
1064 zfcp_get_fcp_sns_info_ptr(fcp_rsp);
1065
1066 rec->rsp_validity = fcp_rsp->validity.value;
1067 rec->rsp_scsi_status = fcp_rsp->scsi_status;
1068 rec->rsp_resid = fcp_rsp->fcp_resid;
1069 if (fcp_rsp->validity.bits.fcp_rsp_len_valid)
1070 rec->rsp_code = *(fcp_rsp_info + 3);
1071 if (fcp_rsp->validity.bits.fcp_sns_len_valid) {
1072 buflen = min((int)fcp_rsp->fcp_sns_len,
1073 ZFCP_DBF_SCSI_MAX_FCP_SNS_INFO);
1074 rec->sns_info_len = buflen;
1075 memcpy(rec->sns_info, fcp_sns_info,
1076 min(buflen,
1077 ZFCP_DBF_SCSI_FCP_SNS_INFO));
1078 offset += min(buflen,
1079 ZFCP_DBF_SCSI_FCP_SNS_INFO);
1080 }
1081
1082 rec->fsf_reqid = (unsigned long)fsf_req;
1083 rec->fsf_seqno = fsf_req->seq_no;
1084 rec->fsf_issued = fsf_req->issued;
1085 }
1086 rec->old_fsf_reqid = old_req_id;
1087 } else {
1088 strncpy(dump->tag, "dump", ZFCP_DBF_TAG_SIZE);
1089 dump->total_size = buflen;
1090 dump->offset = offset;
1091 dump->size = min(buflen - offset,
1092 (int)sizeof(struct
1093 zfcp_scsi_dbf_record) -
1094 (int)sizeof(struct zfcp_dbf_dump));
1095 memcpy(dump->data, fcp_sns_info + offset, dump->size);
1096 offset += dump->size;
1097 }
1098 debug_event(adapter->scsi_dbf, level, rec, sizeof(*rec));
1099 } while (offset < buflen);
1100 spin_unlock_irqrestore(&adapter->scsi_dbf_lock, flags);
1101 }
1102
1103 /**
1104 * zfcp_scsi_dbf_event_result - trace event for SCSI command completion
1105 * @tag: tag indicating success or failure of SCSI command
1106 * @level: trace level applicable for this event
1107 * @adapter: adapter that has been used to issue the SCSI command
1108 * @scsi_cmnd: SCSI command pointer
1109 * @fsf_req: request used to issue SCSI command (might be NULL)
1110 */
1111 void zfcp_scsi_dbf_event_result(const char *tag, int level,
1112 struct zfcp_adapter *adapter,
1113 struct scsi_cmnd *scsi_cmnd,
1114 struct zfcp_fsf_req *fsf_req)
1115 {
1116 zfcp_scsi_dbf_event("rslt", tag, level, adapter, scsi_cmnd, fsf_req, 0);
1117 }
1118
1119 /**
1120 * zfcp_scsi_dbf_event_abort - trace event for SCSI command abort
1121 * @tag: tag indicating success or failure of abort operation
1122 * @adapter: adapter thas has been used to issue SCSI command to be aborted
1123 * @scsi_cmnd: SCSI command to be aborted
1124 * @new_fsf_req: request containing abort (might be NULL)
1125 * @old_req_id: identifier of request containg SCSI command to be aborted
1126 */
1127 void zfcp_scsi_dbf_event_abort(const char *tag, struct zfcp_adapter *adapter,
1128 struct scsi_cmnd *scsi_cmnd,
1129 struct zfcp_fsf_req *new_fsf_req,
1130 unsigned long old_req_id)
1131 {
1132 zfcp_scsi_dbf_event("abrt", tag, 1, adapter, scsi_cmnd, new_fsf_req,
1133 old_req_id);
1134 }
1135
1136 /**
1137 * zfcp_scsi_dbf_event_devreset - trace event for Logical Unit or Target Reset
1138 * @tag: tag indicating success or failure of reset operation
1139 * @flag: indicates type of reset (Target Reset, Logical Unit Reset)
1140 * @unit: unit that needs reset
1141 * @scsi_cmnd: SCSI command which caused this error recovery
1142 */
1143 void zfcp_scsi_dbf_event_devreset(const char *tag, u8 flag,
1144 struct zfcp_unit *unit,
1145 struct scsi_cmnd *scsi_cmnd)
1146 {
1147 zfcp_scsi_dbf_event(flag == FCP_TARGET_RESET ? "trst" : "lrst", tag, 1,
1148 unit->port->adapter, scsi_cmnd, NULL, 0);
1149 }
1150
1151 static int zfcp_scsi_dbf_view_format(debug_info_t *id, struct debug_view *view,
1152 char *out_buf, const char *in_buf)
1153 {
1154 struct zfcp_scsi_dbf_record *r = (struct zfcp_scsi_dbf_record *)in_buf;
1155 struct timespec t;
1156 char *p = out_buf;
1157
1158 if (strncmp(r->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
1159 return 0;
1160
1161 zfcp_dbf_tag(&p, "tag", r->tag);
1162 zfcp_dbf_tag(&p, "tag2", r->tag2);
1163 zfcp_dbf_out(&p, "scsi_id", "0x%08x", r->scsi_id);
1164 zfcp_dbf_out(&p, "scsi_lun", "0x%08x", r->scsi_lun);
1165 zfcp_dbf_out(&p, "scsi_result", "0x%08x", r->scsi_result);
1166 zfcp_dbf_out(&p, "scsi_cmnd", "0x%0Lx", r->scsi_cmnd);
1167 zfcp_dbf_out(&p, "scsi_serial", "0x%016Lx", r->scsi_serial);
1168 zfcp_dbf_outd(&p, "scsi_opcode", r->scsi_opcode, ZFCP_DBF_SCSI_OPCODE,
1169 0, ZFCP_DBF_SCSI_OPCODE);
1170 zfcp_dbf_out(&p, "scsi_retries", "0x%02x", r->scsi_retries);
1171 zfcp_dbf_out(&p, "scsi_allowed", "0x%02x", r->scsi_allowed);
1172 if (strncmp(r->tag, "abrt", ZFCP_DBF_TAG_SIZE) == 0)
1173 zfcp_dbf_out(&p, "old_fsf_reqid", "0x%0Lx", r->old_fsf_reqid);
1174 zfcp_dbf_out(&p, "fsf_reqid", "0x%0Lx", r->fsf_reqid);
1175 zfcp_dbf_out(&p, "fsf_seqno", "0x%08x", r->fsf_seqno);
1176 zfcp_dbf_timestamp(r->fsf_issued, &t);
1177 zfcp_dbf_out(&p, "fsf_issued", "%011lu:%06lu", t.tv_sec, t.tv_nsec);
1178
1179 if (strncmp(r->tag, "rslt", ZFCP_DBF_TAG_SIZE) == 0) {
1180 zfcp_dbf_out(&p, "fcp_rsp_validity", "0x%02x", r->rsp_validity);
1181 zfcp_dbf_out(&p, "fcp_rsp_scsi_status", "0x%02x",
1182 r->rsp_scsi_status);
1183 zfcp_dbf_out(&p, "fcp_rsp_resid", "0x%08x", r->rsp_resid);
1184 zfcp_dbf_out(&p, "fcp_rsp_code", "0x%08x", r->rsp_code);
1185 zfcp_dbf_out(&p, "fcp_sns_info_len", "0x%08x", r->sns_info_len);
1186 zfcp_dbf_outd(&p, "fcp_sns_info", r->sns_info,
1187 min((int)r->sns_info_len,
1188 ZFCP_DBF_SCSI_FCP_SNS_INFO), 0,
1189 r->sns_info_len);
1190 }
1191 p += sprintf(p, "\n");
1192 return p - out_buf;
1193 }
1194
1195 static struct debug_view zfcp_scsi_dbf_view = {
1196 "structured",
1197 NULL,
1198 &zfcp_dbf_view_header,
1199 &zfcp_scsi_dbf_view_format,
1200 NULL,
1201 NULL
1202 };
1203
1204 /**
1205 * zfcp_adapter_debug_register - registers debug feature for an adapter
1206 * @adapter: pointer to adapter for which debug features should be registered
1207 * return: -ENOMEM on error, 0 otherwise
1208 */
1209 int zfcp_adapter_debug_register(struct zfcp_adapter *adapter)
1210 {
1211 char dbf_name[DEBUG_MAX_NAME_LEN];
1212
1213 /* debug feature area which records recovery activity */
1214 sprintf(dbf_name, "zfcp_%s_rec", zfcp_get_busid_by_adapter(adapter));
1215 adapter->rec_dbf = debug_register(dbf_name, dbfsize, 1,
1216 sizeof(struct zfcp_rec_dbf_record));
1217 if (!adapter->rec_dbf)
1218 goto failed;
1219 debug_register_view(adapter->rec_dbf, &debug_hex_ascii_view);
1220 debug_register_view(adapter->rec_dbf, &zfcp_rec_dbf_view);
1221 debug_set_level(adapter->rec_dbf, 3);
1222
1223 /* debug feature area which records HBA (FSF and QDIO) conditions */
1224 sprintf(dbf_name, "zfcp_%s_hba", zfcp_get_busid_by_adapter(adapter));
1225 adapter->hba_dbf = debug_register(dbf_name, dbfsize, 1,
1226 sizeof(struct zfcp_hba_dbf_record));
1227 if (!adapter->hba_dbf)
1228 goto failed;
1229 debug_register_view(adapter->hba_dbf, &debug_hex_ascii_view);
1230 debug_register_view(adapter->hba_dbf, &zfcp_hba_dbf_view);
1231 debug_set_level(adapter->hba_dbf, 3);
1232
1233 /* debug feature area which records SAN command failures and recovery */
1234 sprintf(dbf_name, "zfcp_%s_san", zfcp_get_busid_by_adapter(adapter));
1235 adapter->san_dbf = debug_register(dbf_name, dbfsize, 1,
1236 sizeof(struct zfcp_san_dbf_record));
1237 if (!adapter->san_dbf)
1238 goto failed;
1239 debug_register_view(adapter->san_dbf, &debug_hex_ascii_view);
1240 debug_register_view(adapter->san_dbf, &zfcp_san_dbf_view);
1241 debug_set_level(adapter->san_dbf, 6);
1242
1243 /* debug feature area which records SCSI command failures and recovery */
1244 sprintf(dbf_name, "zfcp_%s_scsi", zfcp_get_busid_by_adapter(adapter));
1245 adapter->scsi_dbf = debug_register(dbf_name, dbfsize, 1,
1246 sizeof(struct zfcp_scsi_dbf_record));
1247 if (!adapter->scsi_dbf)
1248 goto failed;
1249 debug_register_view(adapter->scsi_dbf, &debug_hex_ascii_view);
1250 debug_register_view(adapter->scsi_dbf, &zfcp_scsi_dbf_view);
1251 debug_set_level(adapter->scsi_dbf, 3);
1252
1253 return 0;
1254
1255 failed:
1256 zfcp_adapter_debug_unregister(adapter);
1257
1258 return -ENOMEM;
1259 }
1260
1261 /**
1262 * zfcp_adapter_debug_unregister - unregisters debug feature for an adapter
1263 * @adapter: pointer to adapter for which debug features should be unregistered
1264 */
1265 void zfcp_adapter_debug_unregister(struct zfcp_adapter *adapter)
1266 {
1267 debug_unregister(adapter->scsi_dbf);
1268 debug_unregister(adapter->san_dbf);
1269 debug_unregister(adapter->hba_dbf);
1270 debug_unregister(adapter->rec_dbf);
1271 adapter->scsi_dbf = NULL;
1272 adapter->san_dbf = NULL;
1273 adapter->hba_dbf = NULL;
1274 adapter->rec_dbf = NULL;
1275 }
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