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61776d490d13a0c618ad14293346f74ab34cb852
[deliverable/linux.git] / drivers / s390 / scsi / zfcp_dbf.c
1 /*
2 * zfcp device driver
3 *
4 * Debug traces for zfcp.
5 *
6 * Copyright IBM Corporation 2002, 2009
7 */
8
9 #define KMSG_COMPONENT "zfcp"
10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11
12 #include <linux/ctype.h>
13 #include <asm/debug.h>
14 #include "zfcp_dbf.h"
15 #include "zfcp_ext.h"
16
17 static u32 dbfsize = 4;
18
19 module_param(dbfsize, uint, 0400);
20 MODULE_PARM_DESC(dbfsize,
21 "number of pages for each debug feature area (default 4)");
22
23 static void zfcp_dbf_hexdump(debug_info_t *dbf, void *to, int to_len,
24 int level, char *from, int from_len)
25 {
26 int offset;
27 struct zfcp_dbf_dump *dump = to;
28 int room = to_len - sizeof(*dump);
29
30 for (offset = 0; offset < from_len; offset += dump->size) {
31 memset(to, 0, to_len);
32 strncpy(dump->tag, "dump", ZFCP_DBF_TAG_SIZE);
33 dump->total_size = from_len;
34 dump->offset = offset;
35 dump->size = min(from_len - offset, room);
36 memcpy(dump->data, from + offset, dump->size);
37 debug_event(dbf, level, dump, dump->size + sizeof(*dump));
38 }
39 }
40
41 /* FIXME: this duplicate this code in s390 debug feature */
42 static void zfcp_dbf_timestamp(unsigned long long stck, struct timespec *time)
43 {
44 unsigned long long sec;
45
46 stck -= 0x8126d60e46000000LL - (0x3c26700LL * 1000000 * 4096);
47 sec = stck >> 12;
48 do_div(sec, 1000000);
49 time->tv_sec = sec;
50 stck -= (sec * 1000000) << 12;
51 time->tv_nsec = ((stck * 1000) >> 12);
52 }
53
54 static void zfcp_dbf_tag(char **p, const char *label, const char *tag)
55 {
56 int i;
57
58 *p += sprintf(*p, "%-24s", label);
59 for (i = 0; i < ZFCP_DBF_TAG_SIZE; i++)
60 *p += sprintf(*p, "%c", tag[i]);
61 *p += sprintf(*p, "\n");
62 }
63
64 static void zfcp_dbf_outs(char **buf, const char *s1, const char *s2)
65 {
66 *buf += sprintf(*buf, "%-24s%s\n", s1, s2);
67 }
68
69 static void zfcp_dbf_out(char **buf, const char *s, const char *format, ...)
70 {
71 va_list arg;
72
73 *buf += sprintf(*buf, "%-24s", s);
74 va_start(arg, format);
75 *buf += vsprintf(*buf, format, arg);
76 va_end(arg);
77 *buf += sprintf(*buf, "\n");
78 }
79
80 static void zfcp_dbf_outd(char **p, const char *label, char *buffer,
81 int buflen, int offset, int total_size)
82 {
83 if (!offset)
84 *p += sprintf(*p, "%-24s ", label);
85 while (buflen--) {
86 if (offset > 0) {
87 if ((offset % 32) == 0)
88 *p += sprintf(*p, "\n%-24c ", ' ');
89 else if ((offset % 4) == 0)
90 *p += sprintf(*p, " ");
91 }
92 *p += sprintf(*p, "%02x", *buffer++);
93 if (++offset == total_size) {
94 *p += sprintf(*p, "\n");
95 break;
96 }
97 }
98 if (!total_size)
99 *p += sprintf(*p, "\n");
100 }
101
102 static int zfcp_dbf_view_header(debug_info_t *id, struct debug_view *view,
103 int area, debug_entry_t *entry, char *out_buf)
104 {
105 struct zfcp_dbf_dump *dump = (struct zfcp_dbf_dump *)DEBUG_DATA(entry);
106 struct timespec t;
107 char *p = out_buf;
108
109 if (strncmp(dump->tag, "dump", ZFCP_DBF_TAG_SIZE) != 0) {
110 zfcp_dbf_timestamp(entry->id.stck, &t);
111 zfcp_dbf_out(&p, "timestamp", "%011lu:%06lu",
112 t.tv_sec, t.tv_nsec);
113 zfcp_dbf_out(&p, "cpu", "%02i", entry->id.fields.cpuid);
114 } else {
115 zfcp_dbf_outd(&p, "", dump->data, dump->size, dump->offset,
116 dump->total_size);
117 if ((dump->offset + dump->size) == dump->total_size)
118 p += sprintf(p, "\n");
119 }
120 return p - out_buf;
121 }
122
123 /**
124 * zfcp_hba_dbf_event_fsf_response - trace event for request completion
125 * @fsf_req: request that has been completed
126 */
127 void zfcp_hba_dbf_event_fsf_response(struct zfcp_fsf_req *fsf_req)
128 {
129 struct zfcp_adapter *adapter = fsf_req->adapter;
130 struct zfcp_dbf *dbf = adapter->dbf;
131 struct fsf_qtcb *qtcb = fsf_req->qtcb;
132 union fsf_prot_status_qual *prot_status_qual =
133 &qtcb->prefix.prot_status_qual;
134 union fsf_status_qual *fsf_status_qual = &qtcb->header.fsf_status_qual;
135 struct scsi_cmnd *scsi_cmnd;
136 struct zfcp_port *port;
137 struct zfcp_unit *unit;
138 struct zfcp_send_els *send_els;
139 struct zfcp_hba_dbf_record *rec = &dbf->hba_dbf_buf;
140 struct zfcp_hba_dbf_record_response *response = &rec->u.response;
141 int level;
142 unsigned long flags;
143
144 spin_lock_irqsave(&dbf->hba_dbf_lock, flags);
145 memset(rec, 0, sizeof(*rec));
146 strncpy(rec->tag, "resp", ZFCP_DBF_TAG_SIZE);
147
148 if ((qtcb->prefix.prot_status != FSF_PROT_GOOD) &&
149 (qtcb->prefix.prot_status != FSF_PROT_FSF_STATUS_PRESENTED)) {
150 strncpy(rec->tag2, "perr", ZFCP_DBF_TAG_SIZE);
151 level = 1;
152 } else if (qtcb->header.fsf_status != FSF_GOOD) {
153 strncpy(rec->tag2, "ferr", ZFCP_DBF_TAG_SIZE);
154 level = 1;
155 } else if ((fsf_req->fsf_command == FSF_QTCB_OPEN_PORT_WITH_DID) ||
156 (fsf_req->fsf_command == FSF_QTCB_OPEN_LUN)) {
157 strncpy(rec->tag2, "open", ZFCP_DBF_TAG_SIZE);
158 level = 4;
159 } else if (qtcb->header.log_length) {
160 strncpy(rec->tag2, "qtcb", ZFCP_DBF_TAG_SIZE);
161 level = 5;
162 } else {
163 strncpy(rec->tag2, "norm", ZFCP_DBF_TAG_SIZE);
164 level = 6;
165 }
166
167 response->fsf_command = fsf_req->fsf_command;
168 response->fsf_reqid = fsf_req->req_id;
169 response->fsf_seqno = fsf_req->seq_no;
170 response->fsf_issued = fsf_req->issued;
171 response->fsf_prot_status = qtcb->prefix.prot_status;
172 response->fsf_status = qtcb->header.fsf_status;
173 memcpy(response->fsf_prot_status_qual,
174 prot_status_qual, FSF_PROT_STATUS_QUAL_SIZE);
175 memcpy(response->fsf_status_qual,
176 fsf_status_qual, FSF_STATUS_QUALIFIER_SIZE);
177 response->fsf_req_status = fsf_req->status;
178 response->sbal_first = fsf_req->sbal_first;
179 response->sbal_last = fsf_req->sbal_last;
180 response->sbal_response = fsf_req->sbal_response;
181 response->pool = fsf_req->pool != NULL;
182 response->erp_action = (unsigned long)fsf_req->erp_action;
183
184 switch (fsf_req->fsf_command) {
185 case FSF_QTCB_FCP_CMND:
186 if (fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
187 break;
188 scsi_cmnd = (struct scsi_cmnd *)fsf_req->data;
189 if (scsi_cmnd) {
190 response->u.fcp.cmnd = (unsigned long)scsi_cmnd;
191 response->u.fcp.serial = scsi_cmnd->serial_number;
192 }
193 break;
194
195 case FSF_QTCB_OPEN_PORT_WITH_DID:
196 case FSF_QTCB_CLOSE_PORT:
197 case FSF_QTCB_CLOSE_PHYSICAL_PORT:
198 port = (struct zfcp_port *)fsf_req->data;
199 response->u.port.wwpn = port->wwpn;
200 response->u.port.d_id = port->d_id;
201 response->u.port.port_handle = qtcb->header.port_handle;
202 break;
203
204 case FSF_QTCB_OPEN_LUN:
205 case FSF_QTCB_CLOSE_LUN:
206 unit = (struct zfcp_unit *)fsf_req->data;
207 port = unit->port;
208 response->u.unit.wwpn = port->wwpn;
209 response->u.unit.fcp_lun = unit->fcp_lun;
210 response->u.unit.port_handle = qtcb->header.port_handle;
211 response->u.unit.lun_handle = qtcb->header.lun_handle;
212 break;
213
214 case FSF_QTCB_SEND_ELS:
215 send_els = (struct zfcp_send_els *)fsf_req->data;
216 response->u.els.d_id = qtcb->bottom.support.d_id;
217 response->u.els.ls_code = send_els->ls_code >> 24;
218 break;
219
220 case FSF_QTCB_ABORT_FCP_CMND:
221 case FSF_QTCB_SEND_GENERIC:
222 case FSF_QTCB_EXCHANGE_CONFIG_DATA:
223 case FSF_QTCB_EXCHANGE_PORT_DATA:
224 case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
225 case FSF_QTCB_UPLOAD_CONTROL_FILE:
226 break;
227 }
228
229 debug_event(dbf->hba_dbf, level, rec, sizeof(*rec));
230
231 /* have fcp channel microcode fixed to use as little as possible */
232 if (fsf_req->fsf_command != FSF_QTCB_FCP_CMND) {
233 /* adjust length skipping trailing zeros */
234 char *buf = (char *)qtcb + qtcb->header.log_start;
235 int len = qtcb->header.log_length;
236 for (; len && !buf[len - 1]; len--);
237 zfcp_dbf_hexdump(dbf->hba_dbf, rec, sizeof(*rec), level, buf,
238 len);
239 }
240
241 spin_unlock_irqrestore(&dbf->hba_dbf_lock, flags);
242 }
243
244 /**
245 * zfcp_hba_dbf_event_fsf_unsol - trace event for an unsolicited status buffer
246 * @tag: tag indicating which kind of unsolicited status has been received
247 * @adapter: adapter that has issued the unsolicited status buffer
248 * @status_buffer: buffer containing payload of unsolicited status
249 */
250 void zfcp_hba_dbf_event_fsf_unsol(const char *tag, struct zfcp_adapter *adapter,
251 struct fsf_status_read_buffer *status_buffer)
252 {
253 struct zfcp_dbf *dbf = adapter->dbf;
254 struct zfcp_hba_dbf_record *rec = &dbf->hba_dbf_buf;
255 unsigned long flags;
256
257 spin_lock_irqsave(&dbf->hba_dbf_lock, flags);
258 memset(rec, 0, sizeof(*rec));
259 strncpy(rec->tag, "stat", ZFCP_DBF_TAG_SIZE);
260 strncpy(rec->tag2, tag, ZFCP_DBF_TAG_SIZE);
261
262 rec->u.status.failed = atomic_read(&adapter->stat_miss);
263 if (status_buffer != NULL) {
264 rec->u.status.status_type = status_buffer->status_type;
265 rec->u.status.status_subtype = status_buffer->status_subtype;
266 memcpy(&rec->u.status.queue_designator,
267 &status_buffer->queue_designator,
268 sizeof(struct fsf_queue_designator));
269
270 switch (status_buffer->status_type) {
271 case FSF_STATUS_READ_SENSE_DATA_AVAIL:
272 rec->u.status.payload_size =
273 ZFCP_DBF_UNSOL_PAYLOAD_SENSE_DATA_AVAIL;
274 break;
275
276 case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
277 rec->u.status.payload_size =
278 ZFCP_DBF_UNSOL_PAYLOAD_BIT_ERROR_THRESHOLD;
279 break;
280
281 case FSF_STATUS_READ_LINK_DOWN:
282 switch (status_buffer->status_subtype) {
283 case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
284 case FSF_STATUS_READ_SUB_FDISC_FAILED:
285 rec->u.status.payload_size =
286 sizeof(struct fsf_link_down_info);
287 }
288 break;
289
290 case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
291 rec->u.status.payload_size =
292 ZFCP_DBF_UNSOL_PAYLOAD_FEATURE_UPDATE_ALERT;
293 break;
294 }
295 memcpy(&rec->u.status.payload,
296 &status_buffer->payload, rec->u.status.payload_size);
297 }
298
299 debug_event(dbf->hba_dbf, 2, rec, sizeof(*rec));
300 spin_unlock_irqrestore(&dbf->hba_dbf_lock, flags);
301 }
302
303 /**
304 * zfcp_hba_dbf_event_qdio - trace event for QDIO related failure
305 * @adapter: adapter affected by this QDIO related event
306 * @qdio_error: as passed by qdio module
307 * @sbal_index: first buffer with error condition, as passed by qdio module
308 * @sbal_count: number of buffers affected, as passed by qdio module
309 */
310 void zfcp_hba_dbf_event_qdio(struct zfcp_adapter *adapter,
311 unsigned int qdio_error, int sbal_index,
312 int sbal_count)
313 {
314 struct zfcp_dbf *dbf = adapter->dbf;
315 struct zfcp_hba_dbf_record *r = &dbf->hba_dbf_buf;
316 unsigned long flags;
317
318 spin_lock_irqsave(&dbf->hba_dbf_lock, flags);
319 memset(r, 0, sizeof(*r));
320 strncpy(r->tag, "qdio", ZFCP_DBF_TAG_SIZE);
321 r->u.qdio.qdio_error = qdio_error;
322 r->u.qdio.sbal_index = sbal_index;
323 r->u.qdio.sbal_count = sbal_count;
324 debug_event(dbf->hba_dbf, 0, r, sizeof(*r));
325 spin_unlock_irqrestore(&dbf->hba_dbf_lock, flags);
326 }
327
328 /**
329 * zfcp_hba_dbf_event_berr - trace event for bit error threshold
330 * @adapter: adapter affected by this QDIO related event
331 * @req: fsf request
332 */
333 void zfcp_hba_dbf_event_berr(struct zfcp_adapter *adapter,
334 struct zfcp_fsf_req *req)
335 {
336 struct zfcp_dbf *dbf = adapter->dbf;
337 struct zfcp_hba_dbf_record *r = &dbf->hba_dbf_buf;
338 struct fsf_status_read_buffer *sr_buf = req->data;
339 struct fsf_bit_error_payload *err = &sr_buf->payload.bit_error;
340 unsigned long flags;
341
342 spin_lock_irqsave(&dbf->hba_dbf_lock, flags);
343 memset(r, 0, sizeof(*r));
344 strncpy(r->tag, "berr", ZFCP_DBF_TAG_SIZE);
345 memcpy(&r->u.berr, err, sizeof(struct fsf_bit_error_payload));
346 debug_event(dbf->hba_dbf, 0, r, sizeof(*r));
347 spin_unlock_irqrestore(&dbf->hba_dbf_lock, flags);
348 }
349 static void zfcp_hba_dbf_view_response(char **p,
350 struct zfcp_hba_dbf_record_response *r)
351 {
352 struct timespec t;
353
354 zfcp_dbf_out(p, "fsf_command", "0x%08x", r->fsf_command);
355 zfcp_dbf_out(p, "fsf_reqid", "0x%0Lx", r->fsf_reqid);
356 zfcp_dbf_out(p, "fsf_seqno", "0x%08x", r->fsf_seqno);
357 zfcp_dbf_timestamp(r->fsf_issued, &t);
358 zfcp_dbf_out(p, "fsf_issued", "%011lu:%06lu", t.tv_sec, t.tv_nsec);
359 zfcp_dbf_out(p, "fsf_prot_status", "0x%08x", r->fsf_prot_status);
360 zfcp_dbf_out(p, "fsf_status", "0x%08x", r->fsf_status);
361 zfcp_dbf_outd(p, "fsf_prot_status_qual", r->fsf_prot_status_qual,
362 FSF_PROT_STATUS_QUAL_SIZE, 0, FSF_PROT_STATUS_QUAL_SIZE);
363 zfcp_dbf_outd(p, "fsf_status_qual", r->fsf_status_qual,
364 FSF_STATUS_QUALIFIER_SIZE, 0, FSF_STATUS_QUALIFIER_SIZE);
365 zfcp_dbf_out(p, "fsf_req_status", "0x%08x", r->fsf_req_status);
366 zfcp_dbf_out(p, "sbal_first", "0x%02x", r->sbal_first);
367 zfcp_dbf_out(p, "sbal_last", "0x%02x", r->sbal_last);
368 zfcp_dbf_out(p, "sbal_response", "0x%02x", r->sbal_response);
369 zfcp_dbf_out(p, "pool", "0x%02x", r->pool);
370
371 switch (r->fsf_command) {
372 case FSF_QTCB_FCP_CMND:
373 if (r->fsf_req_status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
374 break;
375 zfcp_dbf_out(p, "scsi_cmnd", "0x%0Lx", r->u.fcp.cmnd);
376 zfcp_dbf_out(p, "scsi_serial", "0x%016Lx", r->u.fcp.serial);
377 p += sprintf(*p, "\n");
378 break;
379
380 case FSF_QTCB_OPEN_PORT_WITH_DID:
381 case FSF_QTCB_CLOSE_PORT:
382 case FSF_QTCB_CLOSE_PHYSICAL_PORT:
383 zfcp_dbf_out(p, "wwpn", "0x%016Lx", r->u.port.wwpn);
384 zfcp_dbf_out(p, "d_id", "0x%06x", r->u.port.d_id);
385 zfcp_dbf_out(p, "port_handle", "0x%08x", r->u.port.port_handle);
386 break;
387
388 case FSF_QTCB_OPEN_LUN:
389 case FSF_QTCB_CLOSE_LUN:
390 zfcp_dbf_out(p, "wwpn", "0x%016Lx", r->u.unit.wwpn);
391 zfcp_dbf_out(p, "fcp_lun", "0x%016Lx", r->u.unit.fcp_lun);
392 zfcp_dbf_out(p, "port_handle", "0x%08x", r->u.unit.port_handle);
393 zfcp_dbf_out(p, "lun_handle", "0x%08x", r->u.unit.lun_handle);
394 break;
395
396 case FSF_QTCB_SEND_ELS:
397 zfcp_dbf_out(p, "d_id", "0x%06x", r->u.els.d_id);
398 zfcp_dbf_out(p, "ls_code", "0x%02x", r->u.els.ls_code);
399 break;
400
401 case FSF_QTCB_ABORT_FCP_CMND:
402 case FSF_QTCB_SEND_GENERIC:
403 case FSF_QTCB_EXCHANGE_CONFIG_DATA:
404 case FSF_QTCB_EXCHANGE_PORT_DATA:
405 case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
406 case FSF_QTCB_UPLOAD_CONTROL_FILE:
407 break;
408 }
409 }
410
411 static void zfcp_hba_dbf_view_status(char **p,
412 struct zfcp_hba_dbf_record_status *r)
413 {
414 zfcp_dbf_out(p, "failed", "0x%02x", r->failed);
415 zfcp_dbf_out(p, "status_type", "0x%08x", r->status_type);
416 zfcp_dbf_out(p, "status_subtype", "0x%08x", r->status_subtype);
417 zfcp_dbf_outd(p, "queue_designator", (char *)&r->queue_designator,
418 sizeof(struct fsf_queue_designator), 0,
419 sizeof(struct fsf_queue_designator));
420 zfcp_dbf_outd(p, "payload", (char *)&r->payload, r->payload_size, 0,
421 r->payload_size);
422 }
423
424 static void zfcp_hba_dbf_view_qdio(char **p, struct zfcp_hba_dbf_record_qdio *r)
425 {
426 zfcp_dbf_out(p, "qdio_error", "0x%08x", r->qdio_error);
427 zfcp_dbf_out(p, "sbal_index", "0x%02x", r->sbal_index);
428 zfcp_dbf_out(p, "sbal_count", "0x%02x", r->sbal_count);
429 }
430
431 static void zfcp_hba_dbf_view_berr(char **p, struct fsf_bit_error_payload *r)
432 {
433 zfcp_dbf_out(p, "link_failures", "%d", r->link_failure_error_count);
434 zfcp_dbf_out(p, "loss_of_sync_err", "%d", r->loss_of_sync_error_count);
435 zfcp_dbf_out(p, "loss_of_sig_err", "%d", r->loss_of_signal_error_count);
436 zfcp_dbf_out(p, "prim_seq_err", "%d",
437 r->primitive_sequence_error_count);
438 zfcp_dbf_out(p, "inval_trans_word_err", "%d",
439 r->invalid_transmission_word_error_count);
440 zfcp_dbf_out(p, "CRC_errors", "%d", r->crc_error_count);
441 zfcp_dbf_out(p, "prim_seq_event_to", "%d",
442 r->primitive_sequence_event_timeout_count);
443 zfcp_dbf_out(p, "elast_buf_overrun_err", "%d",
444 r->elastic_buffer_overrun_error_count);
445 zfcp_dbf_out(p, "adv_rec_buf2buf_cred", "%d",
446 r->advertised_receive_b2b_credit);
447 zfcp_dbf_out(p, "curr_rec_buf2buf_cred", "%d",
448 r->current_receive_b2b_credit);
449 zfcp_dbf_out(p, "adv_trans_buf2buf_cred", "%d",
450 r->advertised_transmit_b2b_credit);
451 zfcp_dbf_out(p, "curr_trans_buf2buf_cred", "%d",
452 r->current_transmit_b2b_credit);
453 }
454
455 static int zfcp_hba_dbf_view_format(debug_info_t *id, struct debug_view *view,
456 char *out_buf, const char *in_buf)
457 {
458 struct zfcp_hba_dbf_record *r = (struct zfcp_hba_dbf_record *)in_buf;
459 char *p = out_buf;
460
461 if (strncmp(r->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
462 return 0;
463
464 zfcp_dbf_tag(&p, "tag", r->tag);
465 if (isalpha(r->tag2[0]))
466 zfcp_dbf_tag(&p, "tag2", r->tag2);
467
468 if (strncmp(r->tag, "resp", ZFCP_DBF_TAG_SIZE) == 0)
469 zfcp_hba_dbf_view_response(&p, &r->u.response);
470 else if (strncmp(r->tag, "stat", ZFCP_DBF_TAG_SIZE) == 0)
471 zfcp_hba_dbf_view_status(&p, &r->u.status);
472 else if (strncmp(r->tag, "qdio", ZFCP_DBF_TAG_SIZE) == 0)
473 zfcp_hba_dbf_view_qdio(&p, &r->u.qdio);
474 else if (strncmp(r->tag, "berr", ZFCP_DBF_TAG_SIZE) == 0)
475 zfcp_hba_dbf_view_berr(&p, &r->u.berr);
476
477 if (strncmp(r->tag, "resp", ZFCP_DBF_TAG_SIZE) != 0)
478 p += sprintf(p, "\n");
479 return p - out_buf;
480 }
481
482 static struct debug_view zfcp_hba_dbf_view = {
483 "structured",
484 NULL,
485 &zfcp_dbf_view_header,
486 &zfcp_hba_dbf_view_format,
487 NULL,
488 NULL
489 };
490
491 static const char *zfcp_rec_dbf_tags[] = {
492 [ZFCP_REC_DBF_ID_THREAD] = "thread",
493 [ZFCP_REC_DBF_ID_TARGET] = "target",
494 [ZFCP_REC_DBF_ID_TRIGGER] = "trigger",
495 [ZFCP_REC_DBF_ID_ACTION] = "action",
496 };
497
498 static int zfcp_rec_dbf_view_format(debug_info_t *id, struct debug_view *view,
499 char *buf, const char *_rec)
500 {
501 struct zfcp_rec_dbf_record *r = (struct zfcp_rec_dbf_record *)_rec;
502 char *p = buf;
503 char hint[ZFCP_DBF_ID_SIZE + 1];
504
505 memcpy(hint, r->id2, ZFCP_DBF_ID_SIZE);
506 hint[ZFCP_DBF_ID_SIZE] = 0;
507 zfcp_dbf_outs(&p, "tag", zfcp_rec_dbf_tags[r->id]);
508 zfcp_dbf_outs(&p, "hint", hint);
509 switch (r->id) {
510 case ZFCP_REC_DBF_ID_THREAD:
511 zfcp_dbf_out(&p, "total", "%d", r->u.thread.total);
512 zfcp_dbf_out(&p, "ready", "%d", r->u.thread.ready);
513 zfcp_dbf_out(&p, "running", "%d", r->u.thread.running);
514 break;
515 case ZFCP_REC_DBF_ID_TARGET:
516 zfcp_dbf_out(&p, "reference", "0x%016Lx", r->u.target.ref);
517 zfcp_dbf_out(&p, "status", "0x%08x", r->u.target.status);
518 zfcp_dbf_out(&p, "erp_count", "%d", r->u.target.erp_count);
519 zfcp_dbf_out(&p, "d_id", "0x%06x", r->u.target.d_id);
520 zfcp_dbf_out(&p, "wwpn", "0x%016Lx", r->u.target.wwpn);
521 zfcp_dbf_out(&p, "fcp_lun", "0x%016Lx", r->u.target.fcp_lun);
522 break;
523 case ZFCP_REC_DBF_ID_TRIGGER:
524 zfcp_dbf_out(&p, "reference", "0x%016Lx", r->u.trigger.ref);
525 zfcp_dbf_out(&p, "erp_action", "0x%016Lx", r->u.trigger.action);
526 zfcp_dbf_out(&p, "requested", "%d", r->u.trigger.want);
527 zfcp_dbf_out(&p, "executed", "%d", r->u.trigger.need);
528 zfcp_dbf_out(&p, "wwpn", "0x%016Lx", r->u.trigger.wwpn);
529 zfcp_dbf_out(&p, "fcp_lun", "0x%016Lx", r->u.trigger.fcp_lun);
530 zfcp_dbf_out(&p, "adapter_status", "0x%08x", r->u.trigger.as);
531 zfcp_dbf_out(&p, "port_status", "0x%08x", r->u.trigger.ps);
532 zfcp_dbf_out(&p, "unit_status", "0x%08x", r->u.trigger.us);
533 break;
534 case ZFCP_REC_DBF_ID_ACTION:
535 zfcp_dbf_out(&p, "erp_action", "0x%016Lx", r->u.action.action);
536 zfcp_dbf_out(&p, "fsf_req", "0x%016Lx", r->u.action.fsf_req);
537 zfcp_dbf_out(&p, "status", "0x%08Lx", r->u.action.status);
538 zfcp_dbf_out(&p, "step", "0x%08Lx", r->u.action.step);
539 break;
540 }
541 p += sprintf(p, "\n");
542 return p - buf;
543 }
544
545 static struct debug_view zfcp_rec_dbf_view = {
546 "structured",
547 NULL,
548 &zfcp_dbf_view_header,
549 &zfcp_rec_dbf_view_format,
550 NULL,
551 NULL
552 };
553
554 /**
555 * zfcp_rec_dbf_event_thread - trace event related to recovery thread operation
556 * @id2: identifier for event
557 * @adapter: adapter
558 * This function assumes that the caller is holding erp_lock.
559 */
560 void zfcp_rec_dbf_event_thread(char *id2, struct zfcp_adapter *adapter)
561 {
562 struct zfcp_dbf *dbf = adapter->dbf;
563 struct zfcp_rec_dbf_record *r = &dbf->rec_dbf_buf;
564 unsigned long flags = 0;
565 struct list_head *entry;
566 unsigned ready = 0, running = 0, total;
567
568 list_for_each(entry, &adapter->erp_ready_head)
569 ready++;
570 list_for_each(entry, &adapter->erp_running_head)
571 running++;
572 total = adapter->erp_total_count;
573
574 spin_lock_irqsave(&dbf->rec_dbf_lock, flags);
575 memset(r, 0, sizeof(*r));
576 r->id = ZFCP_REC_DBF_ID_THREAD;
577 memcpy(r->id2, id2, ZFCP_DBF_ID_SIZE);
578 r->u.thread.total = total;
579 r->u.thread.ready = ready;
580 r->u.thread.running = running;
581 debug_event(dbf->rec_dbf, 6, r, sizeof(*r));
582 spin_unlock_irqrestore(&dbf->rec_dbf_lock, flags);
583 }
584
585 /**
586 * zfcp_rec_dbf_event_thread - trace event related to recovery thread operation
587 * @id2: identifier for event
588 * @adapter: adapter
589 * This function assumes that the caller does not hold erp_lock.
590 */
591 void zfcp_rec_dbf_event_thread_lock(char *id2, struct zfcp_adapter *adapter)
592 {
593 unsigned long flags;
594
595 read_lock_irqsave(&adapter->erp_lock, flags);
596 zfcp_rec_dbf_event_thread(id2, adapter);
597 read_unlock_irqrestore(&adapter->erp_lock, flags);
598 }
599
600 static void zfcp_rec_dbf_event_target(char *id2, void *ref,
601 struct zfcp_adapter *adapter,
602 atomic_t *status, atomic_t *erp_count,
603 u64 wwpn, u32 d_id, u64 fcp_lun)
604 {
605 struct zfcp_dbf *dbf = adapter->dbf;
606 struct zfcp_rec_dbf_record *r = &dbf->rec_dbf_buf;
607 unsigned long flags;
608
609 spin_lock_irqsave(&dbf->rec_dbf_lock, flags);
610 memset(r, 0, sizeof(*r));
611 r->id = ZFCP_REC_DBF_ID_TARGET;
612 memcpy(r->id2, id2, ZFCP_DBF_ID_SIZE);
613 r->u.target.ref = (unsigned long)ref;
614 r->u.target.status = atomic_read(status);
615 r->u.target.wwpn = wwpn;
616 r->u.target.d_id = d_id;
617 r->u.target.fcp_lun = fcp_lun;
618 r->u.target.erp_count = atomic_read(erp_count);
619 debug_event(dbf->rec_dbf, 3, r, sizeof(*r));
620 spin_unlock_irqrestore(&dbf->rec_dbf_lock, flags);
621 }
622
623 /**
624 * zfcp_rec_dbf_event_adapter - trace event for adapter state change
625 * @id: identifier for trigger of state change
626 * @ref: additional reference (e.g. request)
627 * @adapter: adapter
628 */
629 void zfcp_rec_dbf_event_adapter(char *id, void *ref,
630 struct zfcp_adapter *adapter)
631 {
632 zfcp_rec_dbf_event_target(id, ref, adapter, &adapter->status,
633 &adapter->erp_counter, 0, 0, 0);
634 }
635
636 /**
637 * zfcp_rec_dbf_event_port - trace event for port state change
638 * @id: identifier for trigger of state change
639 * @ref: additional reference (e.g. request)
640 * @port: port
641 */
642 void zfcp_rec_dbf_event_port(char *id, void *ref, struct zfcp_port *port)
643 {
644 struct zfcp_adapter *adapter = port->adapter;
645
646 zfcp_rec_dbf_event_target(id, ref, adapter, &port->status,
647 &port->erp_counter, port->wwpn, port->d_id,
648 0);
649 }
650
651 /**
652 * zfcp_rec_dbf_event_unit - trace event for unit state change
653 * @id: identifier for trigger of state change
654 * @ref: additional reference (e.g. request)
655 * @unit: unit
656 */
657 void zfcp_rec_dbf_event_unit(char *id, void *ref, struct zfcp_unit *unit)
658 {
659 struct zfcp_port *port = unit->port;
660 struct zfcp_adapter *adapter = port->adapter;
661
662 zfcp_rec_dbf_event_target(id, ref, adapter, &unit->status,
663 &unit->erp_counter, port->wwpn, port->d_id,
664 unit->fcp_lun);
665 }
666
667 /**
668 * zfcp_rec_dbf_event_trigger - trace event for triggered error recovery
669 * @id2: identifier for error recovery trigger
670 * @ref: additional reference (e.g. request)
671 * @want: originally requested error recovery action
672 * @need: error recovery action actually initiated
673 * @action: address of error recovery action struct
674 * @adapter: adapter
675 * @port: port
676 * @unit: unit
677 */
678 void zfcp_rec_dbf_event_trigger(char *id2, void *ref, u8 want, u8 need,
679 void *action, struct zfcp_adapter *adapter,
680 struct zfcp_port *port, struct zfcp_unit *unit)
681 {
682 struct zfcp_dbf *dbf = adapter->dbf;
683 struct zfcp_rec_dbf_record *r = &dbf->rec_dbf_buf;
684 unsigned long flags;
685
686 spin_lock_irqsave(&dbf->rec_dbf_lock, flags);
687 memset(r, 0, sizeof(*r));
688 r->id = ZFCP_REC_DBF_ID_TRIGGER;
689 memcpy(r->id2, id2, ZFCP_DBF_ID_SIZE);
690 r->u.trigger.ref = (unsigned long)ref;
691 r->u.trigger.want = want;
692 r->u.trigger.need = need;
693 r->u.trigger.action = (unsigned long)action;
694 r->u.trigger.as = atomic_read(&adapter->status);
695 if (port) {
696 r->u.trigger.ps = atomic_read(&port->status);
697 r->u.trigger.wwpn = port->wwpn;
698 }
699 if (unit) {
700 r->u.trigger.us = atomic_read(&unit->status);
701 r->u.trigger.fcp_lun = unit->fcp_lun;
702 }
703 debug_event(dbf->rec_dbf, action ? 1 : 4, r, sizeof(*r));
704 spin_unlock_irqrestore(&dbf->rec_dbf_lock, flags);
705 }
706
707 /**
708 * zfcp_rec_dbf_event_action - trace event showing progress of recovery action
709 * @id2: identifier
710 * @erp_action: error recovery action struct pointer
711 */
712 void zfcp_rec_dbf_event_action(char *id2, struct zfcp_erp_action *erp_action)
713 {
714 struct zfcp_adapter *adapter = erp_action->adapter;
715 struct zfcp_dbf *dbf = adapter->dbf;
716 struct zfcp_rec_dbf_record *r = &dbf->rec_dbf_buf;
717 unsigned long flags;
718
719 spin_lock_irqsave(&dbf->rec_dbf_lock, flags);
720 memset(r, 0, sizeof(*r));
721 r->id = ZFCP_REC_DBF_ID_ACTION;
722 memcpy(r->id2, id2, ZFCP_DBF_ID_SIZE);
723 r->u.action.action = (unsigned long)erp_action;
724 r->u.action.status = erp_action->status;
725 r->u.action.step = erp_action->step;
726 r->u.action.fsf_req = (unsigned long)erp_action->fsf_req;
727 debug_event(dbf->rec_dbf, 5, r, sizeof(*r));
728 spin_unlock_irqrestore(&dbf->rec_dbf_lock, flags);
729 }
730
731 /**
732 * zfcp_san_dbf_event_ct_request - trace event for issued CT request
733 * @fsf_req: request containing issued CT data
734 */
735 void zfcp_san_dbf_event_ct_request(struct zfcp_fsf_req *fsf_req)
736 {
737 struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data;
738 struct zfcp_wka_port *wka_port = ct->wka_port;
739 struct zfcp_adapter *adapter = wka_port->adapter;
740 struct zfcp_dbf *dbf = adapter->dbf;
741 struct ct_hdr *hdr = sg_virt(ct->req);
742 struct zfcp_san_dbf_record *r = &dbf->san_dbf_buf;
743 struct zfcp_san_dbf_record_ct_request *oct = &r->u.ct_req;
744 int level = 3;
745 unsigned long flags;
746
747 spin_lock_irqsave(&dbf->san_dbf_lock, flags);
748 memset(r, 0, sizeof(*r));
749 strncpy(r->tag, "octc", ZFCP_DBF_TAG_SIZE);
750 r->fsf_reqid = fsf_req->req_id;
751 r->fsf_seqno = fsf_req->seq_no;
752 r->s_id = fc_host_port_id(adapter->scsi_host);
753 r->d_id = wka_port->d_id;
754 oct->cmd_req_code = hdr->cmd_rsp_code;
755 oct->revision = hdr->revision;
756 oct->gs_type = hdr->gs_type;
757 oct->gs_subtype = hdr->gs_subtype;
758 oct->options = hdr->options;
759 oct->max_res_size = hdr->max_res_size;
760 oct->len = min((int)ct->req->length - (int)sizeof(struct ct_hdr),
761 ZFCP_DBF_SAN_MAX_PAYLOAD);
762 debug_event(dbf->san_dbf, level, r, sizeof(*r));
763 zfcp_dbf_hexdump(dbf->san_dbf, r, sizeof(*r), level,
764 (void *)hdr + sizeof(struct ct_hdr), oct->len);
765 spin_unlock_irqrestore(&dbf->san_dbf_lock, flags);
766 }
767
768 /**
769 * zfcp_san_dbf_event_ct_response - trace event for completion of CT request
770 * @fsf_req: request containing CT response
771 */
772 void zfcp_san_dbf_event_ct_response(struct zfcp_fsf_req *fsf_req)
773 {
774 struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data;
775 struct zfcp_wka_port *wka_port = ct->wka_port;
776 struct zfcp_adapter *adapter = wka_port->adapter;
777 struct ct_hdr *hdr = sg_virt(ct->resp);
778 struct zfcp_dbf *dbf = adapter->dbf;
779 struct zfcp_san_dbf_record *r = &dbf->san_dbf_buf;
780 struct zfcp_san_dbf_record_ct_response *rct = &r->u.ct_resp;
781 int level = 3;
782 unsigned long flags;
783
784 spin_lock_irqsave(&dbf->san_dbf_lock, flags);
785 memset(r, 0, sizeof(*r));
786 strncpy(r->tag, "rctc", ZFCP_DBF_TAG_SIZE);
787 r->fsf_reqid = fsf_req->req_id;
788 r->fsf_seqno = fsf_req->seq_no;
789 r->s_id = wka_port->d_id;
790 r->d_id = fc_host_port_id(adapter->scsi_host);
791 rct->cmd_rsp_code = hdr->cmd_rsp_code;
792 rct->revision = hdr->revision;
793 rct->reason_code = hdr->reason_code;
794 rct->expl = hdr->reason_code_expl;
795 rct->vendor_unique = hdr->vendor_unique;
796 rct->max_res_size = hdr->max_res_size;
797 rct->len = min((int)ct->resp->length - (int)sizeof(struct ct_hdr),
798 ZFCP_DBF_SAN_MAX_PAYLOAD);
799 debug_event(dbf->san_dbf, level, r, sizeof(*r));
800 zfcp_dbf_hexdump(dbf->san_dbf, r, sizeof(*r), level,
801 (void *)hdr + sizeof(struct ct_hdr), rct->len);
802 spin_unlock_irqrestore(&dbf->san_dbf_lock, flags);
803 }
804
805 static void zfcp_san_dbf_event_els(const char *tag, int level,
806 struct zfcp_fsf_req *fsf_req, u32 s_id,
807 u32 d_id, u8 ls_code, void *buffer,
808 int buflen)
809 {
810 struct zfcp_adapter *adapter = fsf_req->adapter;
811 struct zfcp_dbf *dbf = adapter->dbf;
812 struct zfcp_san_dbf_record *rec = &dbf->san_dbf_buf;
813 unsigned long flags;
814
815 spin_lock_irqsave(&dbf->san_dbf_lock, flags);
816 memset(rec, 0, sizeof(*rec));
817 strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
818 rec->fsf_reqid = fsf_req->req_id;
819 rec->fsf_seqno = fsf_req->seq_no;
820 rec->s_id = s_id;
821 rec->d_id = d_id;
822 rec->u.els.ls_code = ls_code;
823 debug_event(dbf->san_dbf, level, rec, sizeof(*rec));
824 zfcp_dbf_hexdump(dbf->san_dbf, rec, sizeof(*rec), level,
825 buffer, min(buflen, ZFCP_DBF_SAN_MAX_PAYLOAD));
826 spin_unlock_irqrestore(&dbf->san_dbf_lock, flags);
827 }
828
829 /**
830 * zfcp_san_dbf_event_els_request - trace event for issued ELS
831 * @fsf_req: request containing issued ELS
832 */
833 void zfcp_san_dbf_event_els_request(struct zfcp_fsf_req *fsf_req)
834 {
835 struct zfcp_send_els *els = (struct zfcp_send_els *)fsf_req->data;
836
837 zfcp_san_dbf_event_els("oels", 2, fsf_req,
838 fc_host_port_id(els->adapter->scsi_host),
839 els->d_id, *(u8 *) sg_virt(els->req),
840 sg_virt(els->req), els->req->length);
841 }
842
843 /**
844 * zfcp_san_dbf_event_els_response - trace event for completed ELS
845 * @fsf_req: request containing ELS response
846 */
847 void zfcp_san_dbf_event_els_response(struct zfcp_fsf_req *fsf_req)
848 {
849 struct zfcp_send_els *els = (struct zfcp_send_els *)fsf_req->data;
850
851 zfcp_san_dbf_event_els("rels", 2, fsf_req, els->d_id,
852 fc_host_port_id(els->adapter->scsi_host),
853 *(u8 *)sg_virt(els->req), sg_virt(els->resp),
854 els->resp->length);
855 }
856
857 /**
858 * zfcp_san_dbf_event_incoming_els - trace event for incomig ELS
859 * @fsf_req: request containing unsolicited status buffer with incoming ELS
860 */
861 void zfcp_san_dbf_event_incoming_els(struct zfcp_fsf_req *fsf_req)
862 {
863 struct zfcp_adapter *adapter = fsf_req->adapter;
864 struct fsf_status_read_buffer *buf =
865 (struct fsf_status_read_buffer *)fsf_req->data;
866 int length = (int)buf->length -
867 (int)((void *)&buf->payload - (void *)buf);
868
869 zfcp_san_dbf_event_els("iels", 1, fsf_req, buf->d_id,
870 fc_host_port_id(adapter->scsi_host),
871 buf->payload.data[0], (void *)buf->payload.data,
872 length);
873 }
874
875 static int zfcp_san_dbf_view_format(debug_info_t *id, struct debug_view *view,
876 char *out_buf, const char *in_buf)
877 {
878 struct zfcp_san_dbf_record *r = (struct zfcp_san_dbf_record *)in_buf;
879 char *p = out_buf;
880
881 if (strncmp(r->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
882 return 0;
883
884 zfcp_dbf_tag(&p, "tag", r->tag);
885 zfcp_dbf_out(&p, "fsf_reqid", "0x%0Lx", r->fsf_reqid);
886 zfcp_dbf_out(&p, "fsf_seqno", "0x%08x", r->fsf_seqno);
887 zfcp_dbf_out(&p, "s_id", "0x%06x", r->s_id);
888 zfcp_dbf_out(&p, "d_id", "0x%06x", r->d_id);
889
890 if (strncmp(r->tag, "octc", ZFCP_DBF_TAG_SIZE) == 0) {
891 struct zfcp_san_dbf_record_ct_request *ct = &r->u.ct_req;
892 zfcp_dbf_out(&p, "cmd_req_code", "0x%04x", ct->cmd_req_code);
893 zfcp_dbf_out(&p, "revision", "0x%02x", ct->revision);
894 zfcp_dbf_out(&p, "gs_type", "0x%02x", ct->gs_type);
895 zfcp_dbf_out(&p, "gs_subtype", "0x%02x", ct->gs_subtype);
896 zfcp_dbf_out(&p, "options", "0x%02x", ct->options);
897 zfcp_dbf_out(&p, "max_res_size", "0x%04x", ct->max_res_size);
898 } else if (strncmp(r->tag, "rctc", ZFCP_DBF_TAG_SIZE) == 0) {
899 struct zfcp_san_dbf_record_ct_response *ct = &r->u.ct_resp;
900 zfcp_dbf_out(&p, "cmd_rsp_code", "0x%04x", ct->cmd_rsp_code);
901 zfcp_dbf_out(&p, "revision", "0x%02x", ct->revision);
902 zfcp_dbf_out(&p, "reason_code", "0x%02x", ct->reason_code);
903 zfcp_dbf_out(&p, "reason_code_expl", "0x%02x", ct->expl);
904 zfcp_dbf_out(&p, "vendor_unique", "0x%02x", ct->vendor_unique);
905 zfcp_dbf_out(&p, "max_res_size", "0x%04x", ct->max_res_size);
906 } else if (strncmp(r->tag, "oels", ZFCP_DBF_TAG_SIZE) == 0 ||
907 strncmp(r->tag, "rels", ZFCP_DBF_TAG_SIZE) == 0 ||
908 strncmp(r->tag, "iels", ZFCP_DBF_TAG_SIZE) == 0) {
909 struct zfcp_san_dbf_record_els *els = &r->u.els;
910 zfcp_dbf_out(&p, "ls_code", "0x%02x", els->ls_code);
911 }
912 return p - out_buf;
913 }
914
915 static struct debug_view zfcp_san_dbf_view = {
916 "structured",
917 NULL,
918 &zfcp_dbf_view_header,
919 &zfcp_san_dbf_view_format,
920 NULL,
921 NULL
922 };
923
924 void _zfcp_scsi_dbf_event(const char *tag, const char *tag2, int level,
925 struct zfcp_dbf *dbf, struct scsi_cmnd *scsi_cmnd,
926 struct zfcp_fsf_req *fsf_req,
927 unsigned long old_req_id)
928 {
929 struct zfcp_scsi_dbf_record *rec = &dbf->scsi_dbf_buf;
930 struct zfcp_dbf_dump *dump = (struct zfcp_dbf_dump *)rec;
931 unsigned long flags;
932 struct fcp_rsp_iu *fcp_rsp;
933 char *fcp_rsp_info = NULL, *fcp_sns_info = NULL;
934 int offset = 0, buflen = 0;
935
936 spin_lock_irqsave(&dbf->scsi_dbf_lock, flags);
937 do {
938 memset(rec, 0, sizeof(*rec));
939 if (offset == 0) {
940 strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
941 strncpy(rec->tag2, tag2, ZFCP_DBF_TAG_SIZE);
942 if (scsi_cmnd != NULL) {
943 if (scsi_cmnd->device) {
944 rec->scsi_id = scsi_cmnd->device->id;
945 rec->scsi_lun = scsi_cmnd->device->lun;
946 }
947 rec->scsi_result = scsi_cmnd->result;
948 rec->scsi_cmnd = (unsigned long)scsi_cmnd;
949 rec->scsi_serial = scsi_cmnd->serial_number;
950 memcpy(rec->scsi_opcode, scsi_cmnd->cmnd,
951 min((int)scsi_cmnd->cmd_len,
952 ZFCP_DBF_SCSI_OPCODE));
953 rec->scsi_retries = scsi_cmnd->retries;
954 rec->scsi_allowed = scsi_cmnd->allowed;
955 }
956 if (fsf_req != NULL) {
957 fcp_rsp = (struct fcp_rsp_iu *)
958 &(fsf_req->qtcb->bottom.io.fcp_rsp);
959 fcp_rsp_info = (unsigned char *) &fcp_rsp[1];
960 fcp_sns_info =
961 zfcp_get_fcp_sns_info_ptr(fcp_rsp);
962
963 rec->rsp_validity = fcp_rsp->validity.value;
964 rec->rsp_scsi_status = fcp_rsp->scsi_status;
965 rec->rsp_resid = fcp_rsp->fcp_resid;
966 if (fcp_rsp->validity.bits.fcp_rsp_len_valid)
967 rec->rsp_code = *(fcp_rsp_info + 3);
968 if (fcp_rsp->validity.bits.fcp_sns_len_valid) {
969 buflen = min((int)fcp_rsp->fcp_sns_len,
970 ZFCP_DBF_SCSI_MAX_FCP_SNS_INFO);
971 rec->sns_info_len = buflen;
972 memcpy(rec->sns_info, fcp_sns_info,
973 min(buflen,
974 ZFCP_DBF_SCSI_FCP_SNS_INFO));
975 offset += min(buflen,
976 ZFCP_DBF_SCSI_FCP_SNS_INFO);
977 }
978
979 rec->fsf_reqid = fsf_req->req_id;
980 rec->fsf_seqno = fsf_req->seq_no;
981 rec->fsf_issued = fsf_req->issued;
982 }
983 rec->old_fsf_reqid = old_req_id;
984 } else {
985 strncpy(dump->tag, "dump", ZFCP_DBF_TAG_SIZE);
986 dump->total_size = buflen;
987 dump->offset = offset;
988 dump->size = min(buflen - offset,
989 (int)sizeof(struct
990 zfcp_scsi_dbf_record) -
991 (int)sizeof(struct zfcp_dbf_dump));
992 memcpy(dump->data, fcp_sns_info + offset, dump->size);
993 offset += dump->size;
994 }
995 debug_event(dbf->scsi_dbf, level, rec, sizeof(*rec));
996 } while (offset < buflen);
997 spin_unlock_irqrestore(&dbf->scsi_dbf_lock, flags);
998 }
999
1000 static int zfcp_scsi_dbf_view_format(debug_info_t *id, struct debug_view *view,
1001 char *out_buf, const char *in_buf)
1002 {
1003 struct zfcp_scsi_dbf_record *r = (struct zfcp_scsi_dbf_record *)in_buf;
1004 struct timespec t;
1005 char *p = out_buf;
1006
1007 if (strncmp(r->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
1008 return 0;
1009
1010 zfcp_dbf_tag(&p, "tag", r->tag);
1011 zfcp_dbf_tag(&p, "tag2", r->tag2);
1012 zfcp_dbf_out(&p, "scsi_id", "0x%08x", r->scsi_id);
1013 zfcp_dbf_out(&p, "scsi_lun", "0x%08x", r->scsi_lun);
1014 zfcp_dbf_out(&p, "scsi_result", "0x%08x", r->scsi_result);
1015 zfcp_dbf_out(&p, "scsi_cmnd", "0x%0Lx", r->scsi_cmnd);
1016 zfcp_dbf_out(&p, "scsi_serial", "0x%016Lx", r->scsi_serial);
1017 zfcp_dbf_outd(&p, "scsi_opcode", r->scsi_opcode, ZFCP_DBF_SCSI_OPCODE,
1018 0, ZFCP_DBF_SCSI_OPCODE);
1019 zfcp_dbf_out(&p, "scsi_retries", "0x%02x", r->scsi_retries);
1020 zfcp_dbf_out(&p, "scsi_allowed", "0x%02x", r->scsi_allowed);
1021 if (strncmp(r->tag, "abrt", ZFCP_DBF_TAG_SIZE) == 0)
1022 zfcp_dbf_out(&p, "old_fsf_reqid", "0x%0Lx", r->old_fsf_reqid);
1023 zfcp_dbf_out(&p, "fsf_reqid", "0x%0Lx", r->fsf_reqid);
1024 zfcp_dbf_out(&p, "fsf_seqno", "0x%08x", r->fsf_seqno);
1025 zfcp_dbf_timestamp(r->fsf_issued, &t);
1026 zfcp_dbf_out(&p, "fsf_issued", "%011lu:%06lu", t.tv_sec, t.tv_nsec);
1027
1028 if (strncmp(r->tag, "rslt", ZFCP_DBF_TAG_SIZE) == 0) {
1029 zfcp_dbf_out(&p, "fcp_rsp_validity", "0x%02x", r->rsp_validity);
1030 zfcp_dbf_out(&p, "fcp_rsp_scsi_status", "0x%02x",
1031 r->rsp_scsi_status);
1032 zfcp_dbf_out(&p, "fcp_rsp_resid", "0x%08x", r->rsp_resid);
1033 zfcp_dbf_out(&p, "fcp_rsp_code", "0x%08x", r->rsp_code);
1034 zfcp_dbf_out(&p, "fcp_sns_info_len", "0x%08x", r->sns_info_len);
1035 zfcp_dbf_outd(&p, "fcp_sns_info", r->sns_info,
1036 min((int)r->sns_info_len,
1037 ZFCP_DBF_SCSI_FCP_SNS_INFO), 0,
1038 r->sns_info_len);
1039 }
1040 p += sprintf(p, "\n");
1041 return p - out_buf;
1042 }
1043
1044 static struct debug_view zfcp_scsi_dbf_view = {
1045 "structured",
1046 NULL,
1047 &zfcp_dbf_view_header,
1048 &zfcp_scsi_dbf_view_format,
1049 NULL,
1050 NULL
1051 };
1052
1053 static debug_info_t *zfcp_dbf_reg(const char *name, int level,
1054 struct debug_view *view, int size)
1055 {
1056 struct debug_info *d;
1057
1058 d = debug_register(name, dbfsize, level, size);
1059 if (!d)
1060 return NULL;
1061
1062 debug_register_view(d, &debug_hex_ascii_view);
1063 debug_register_view(d, view);
1064 debug_set_level(d, level);
1065
1066 return d;
1067 }
1068
1069 /**
1070 * zfcp_adapter_debug_register - registers debug feature for an adapter
1071 * @adapter: pointer to adapter for which debug features should be registered
1072 * return: -ENOMEM on error, 0 otherwise
1073 */
1074 int zfcp_adapter_debug_register(struct zfcp_adapter *adapter)
1075 {
1076 char dbf_name[DEBUG_MAX_NAME_LEN];
1077 struct zfcp_dbf *dbf;
1078
1079 dbf = kmalloc(sizeof(struct zfcp_dbf), GFP_KERNEL);
1080 if (!dbf)
1081 return -ENOMEM;
1082
1083 spin_lock_init(&dbf->hba_dbf_lock);
1084 spin_lock_init(&dbf->san_dbf_lock);
1085 spin_lock_init(&dbf->scsi_dbf_lock);
1086 spin_lock_init(&dbf->rec_dbf_lock);
1087
1088 /* debug feature area which records recovery activity */
1089 sprintf(dbf_name, "zfcp_%s_rec", dev_name(&adapter->ccw_device->dev));
1090 dbf->rec_dbf = zfcp_dbf_reg(dbf_name, 3, &zfcp_rec_dbf_view,
1091 sizeof(struct zfcp_rec_dbf_record));
1092 if (!dbf->rec_dbf)
1093 goto fail_rec;
1094
1095 /* debug feature area which records HBA (FSF and QDIO) conditions */
1096 sprintf(dbf_name, "zfcp_%s_hba", dev_name(&adapter->ccw_device->dev));
1097 dbf->hba_dbf = zfcp_dbf_reg(dbf_name, 3, &zfcp_hba_dbf_view,
1098 sizeof(struct zfcp_hba_dbf_record));
1099 if (!dbf->hba_dbf)
1100 goto fail_hba;
1101
1102 /* debug feature area which records SAN command failures and recovery */
1103 sprintf(dbf_name, "zfcp_%s_san", dev_name(&adapter->ccw_device->dev));
1104 dbf->san_dbf = zfcp_dbf_reg(dbf_name, 6, &zfcp_san_dbf_view,
1105 sizeof(struct zfcp_san_dbf_record));
1106 if (!dbf->san_dbf)
1107 goto fail_san;
1108
1109 /* debug feature area which records SCSI command failures and recovery */
1110 sprintf(dbf_name, "zfcp_%s_scsi", dev_name(&adapter->ccw_device->dev));
1111 dbf->scsi_dbf = zfcp_dbf_reg(dbf_name, 3, &zfcp_scsi_dbf_view,
1112 sizeof(struct zfcp_scsi_dbf_record));
1113 if (!dbf->scsi_dbf)
1114 goto fail_scsi;
1115
1116 adapter->dbf = dbf;
1117 return 0;
1118
1119 fail_scsi:
1120 debug_unregister(dbf->san_dbf);
1121 fail_san:
1122 debug_unregister(dbf->hba_dbf);
1123 fail_hba:
1124 debug_unregister(dbf->rec_dbf);
1125 fail_rec:
1126 kfree(dbf);
1127 return -ENOMEM;
1128 }
1129
1130 /**
1131 * zfcp_adapter_debug_unregister - unregisters debug feature for an adapter
1132 * @adapter: pointer to adapter for which debug features should be unregistered
1133 */
1134 void zfcp_adapter_debug_unregister(struct zfcp_adapter *adapter)
1135 {
1136 debug_unregister(adapter->dbf->scsi_dbf);
1137 debug_unregister(adapter->dbf->san_dbf);
1138 debug_unregister(adapter->dbf->hba_dbf);
1139 debug_unregister(adapter->dbf->rec_dbf);
1140 kfree(adapter->dbf);
1141 adapter->dbf = NULL;
1142 }
Linux kernel - Deliverables
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