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Linux 2.6.17.7
[linux/fpc-iii.git] / drivers / s390 / scsi / zfcp_dbf.c
bloba5f2ba9a8fdb57079f04d8074ed112b93c3d8209
1 /*
2 *
3 * linux/drivers/s390/scsi/zfcp_dbf.c
4 *
5 * FCP adapter driver for IBM eServer zSeries
6 *
7 * Debugging facilities
8 *
9 * (C) Copyright IBM Corp. 2005
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2, or (at your option)
14 * any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 */
25
26 #include <asm/debug.h>
27 #include <linux/ctype.h>
28 #include "zfcp_ext.h"
29
30 static u32 dbfsize = 4;
31
32 module_param(dbfsize, uint, 0400);
33 MODULE_PARM_DESC(dbfsize,
34 "number of pages for each debug feature area (default 4)");
35
36 #define ZFCP_LOG_AREA ZFCP_LOG_AREA_OTHER
37
38 static inline int
39 zfcp_dbf_stck(char *out_buf, const char *label, unsigned long long stck)
40 {
41 unsigned long long sec;
42 struct timespec xtime;
43 int len = 0;
44
45 stck -= 0x8126d60e46000000LL - (0x3c26700LL * 1000000 * 4096);
46 sec = stck >> 12;
47 do_div(sec, 1000000);
48 xtime.tv_sec = sec;
49 stck -= (sec * 1000000) << 12;
50 xtime.tv_nsec = ((stck * 1000) >> 12);
51 len += sprintf(out_buf + len, "%-24s%011lu:%06lu\n",
52 label, xtime.tv_sec, xtime.tv_nsec);
53
54 return len;
55 }
56
57 static int zfcp_dbf_tag(char *out_buf, const char *label, const char *tag)
58 {
59 int len = 0, i;
60
61 len += sprintf(out_buf + len, "%-24s", label);
62 for (i = 0; i < ZFCP_DBF_TAG_SIZE; i++)
63 len += sprintf(out_buf + len, "%c", tag[i]);
64 len += sprintf(out_buf + len, "\n");
65
66 return len;
67 }
68
69 static int
70 zfcp_dbf_view(char *out_buf, const char *label, const char *format, ...)
71 {
72 va_list arg;
73 int len = 0;
74
75 len += sprintf(out_buf + len, "%-24s", label);
76 va_start(arg, format);
77 len += vsprintf(out_buf + len, format, arg);
78 va_end(arg);
79 len += sprintf(out_buf + len, "\n");
80
81 return len;
82 }
83
84 static int
85 zfcp_dbf_view_dump(char *out_buf, const char *label,
86 char *buffer, int buflen, int offset, int total_size)
87 {
88 int len = 0;
89
90 if (offset == 0)
91 len += sprintf(out_buf + len, "%-24s ", label);
92
93 while (buflen--) {
94 if (offset > 0) {
95 if ((offset % 32) == 0)
96 len += sprintf(out_buf + len, "\n%-24c ", ' ');
97 else if ((offset % 4) == 0)
98 len += sprintf(out_buf + len, " ");
99 }
100 len += sprintf(out_buf + len, "%02x", *buffer++);
101 if (++offset == total_size) {
102 len += sprintf(out_buf + len, "\n");
103 break;
104 }
105 }
106
107 if (total_size == 0)
108 len += sprintf(out_buf + len, "\n");
109
110 return len;
111 }
112
113 static inline int
114 zfcp_dbf_view_header(debug_info_t * id, struct debug_view *view, int area,
115 debug_entry_t * entry, char *out_buf)
116 {
117 struct zfcp_dbf_dump *dump = (struct zfcp_dbf_dump *)DEBUG_DATA(entry);
118 int len = 0;
119
120 if (strncmp(dump->tag, "dump", ZFCP_DBF_TAG_SIZE) != 0) {
121 len += zfcp_dbf_stck(out_buf + len, "timestamp",
122 entry->id.stck);
123 len += zfcp_dbf_view(out_buf + len, "cpu", "%02i",
124 entry->id.fields.cpuid);
125 } else {
126 len += zfcp_dbf_view_dump(out_buf + len, NULL,
127 dump->data,
128 dump->size,
129 dump->offset, dump->total_size);
130 if ((dump->offset + dump->size) == dump->total_size)
131 len += sprintf(out_buf + len, "\n");
132 }
133
134 return len;
135 }
136
137 inline void zfcp_hba_dbf_event_fsf_response(struct zfcp_fsf_req *fsf_req)
138 {
139 struct zfcp_adapter *adapter = fsf_req->adapter;
140 struct fsf_qtcb *qtcb = fsf_req->qtcb;
141 union fsf_prot_status_qual *prot_status_qual =
142 &qtcb->prefix.prot_status_qual;
143 union fsf_status_qual *fsf_status_qual = &qtcb->header.fsf_status_qual;
144 struct scsi_cmnd *scsi_cmnd;
145 struct zfcp_port *port;
146 struct zfcp_unit *unit;
147 struct zfcp_send_els *send_els;
148 struct zfcp_hba_dbf_record *rec = &adapter->hba_dbf_buf;
149 struct zfcp_hba_dbf_record_response *response = &rec->type.response;
150 int level;
151 unsigned long flags;
152
153 spin_lock_irqsave(&adapter->hba_dbf_lock, flags);
154 memset(rec, 0, sizeof(struct zfcp_hba_dbf_record));
155 strncpy(rec->tag, "resp", ZFCP_DBF_TAG_SIZE);
156
157 if ((qtcb->prefix.prot_status != FSF_PROT_GOOD) &&
158 (qtcb->prefix.prot_status != FSF_PROT_FSF_STATUS_PRESENTED)) {
159 strncpy(rec->tag2, "perr", ZFCP_DBF_TAG_SIZE);
160 level = 1;
161 } else if (qtcb->header.fsf_status != FSF_GOOD) {
162 strncpy(rec->tag2, "ferr", ZFCP_DBF_TAG_SIZE);
163 level = 1;
164 } else if ((fsf_req->fsf_command == FSF_QTCB_OPEN_PORT_WITH_DID) ||
165 (fsf_req->fsf_command == FSF_QTCB_OPEN_LUN)) {
166 strncpy(rec->tag2, "open", ZFCP_DBF_TAG_SIZE);
167 level = 4;
168 } else if ((prot_status_qual->doubleword[0] != 0) ||
169 (prot_status_qual->doubleword[1] != 0) ||
170 (fsf_status_qual->doubleword[0] != 0) ||
171 (fsf_status_qual->doubleword[1] != 0)) {
172 strncpy(rec->tag2, "qual", ZFCP_DBF_TAG_SIZE);
173 level = 3;
174 } else {
175 strncpy(rec->tag2, "norm", ZFCP_DBF_TAG_SIZE);
176 level = 6;
177 }
178
179 response->fsf_command = fsf_req->fsf_command;
180 response->fsf_reqid = (unsigned long)fsf_req;
181 response->fsf_seqno = fsf_req->seq_no;
182 response->fsf_issued = fsf_req->issued;
183 response->fsf_prot_status = qtcb->prefix.prot_status;
184 response->fsf_status = qtcb->header.fsf_status;
185 memcpy(response->fsf_prot_status_qual,
186 prot_status_qual, FSF_PROT_STATUS_QUAL_SIZE);
187 memcpy(response->fsf_status_qual,
188 fsf_status_qual, FSF_STATUS_QUALIFIER_SIZE);
189 response->fsf_req_status = fsf_req->status;
190 response->sbal_first = fsf_req->sbal_first;
191 response->sbal_curr = fsf_req->sbal_curr;
192 response->sbal_last = fsf_req->sbal_last;
193 response->pool = fsf_req->pool != NULL;
194 response->erp_action = (unsigned long)fsf_req->erp_action;
195
196 switch (fsf_req->fsf_command) {
197 case FSF_QTCB_FCP_CMND:
198 if (fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
199 break;
200 scsi_cmnd = (struct scsi_cmnd *)fsf_req->data;
201 if (scsi_cmnd != NULL) {
202 response->data.send_fcp.scsi_cmnd
203 = (unsigned long)scsi_cmnd;
204 response->data.send_fcp.scsi_serial
205 = scsi_cmnd->serial_number;
206 }
207 break;
208
209 case FSF_QTCB_OPEN_PORT_WITH_DID:
210 case FSF_QTCB_CLOSE_PORT:
211 case FSF_QTCB_CLOSE_PHYSICAL_PORT:
212 port = (struct zfcp_port *)fsf_req->data;
213 response->data.port.wwpn = port->wwpn;
214 response->data.port.d_id = port->d_id;
215 response->data.port.port_handle = qtcb->header.port_handle;
216 break;
217
218 case FSF_QTCB_OPEN_LUN:
219 case FSF_QTCB_CLOSE_LUN:
220 unit = (struct zfcp_unit *)fsf_req->data;
221 port = unit->port;
222 response->data.unit.wwpn = port->wwpn;
223 response->data.unit.fcp_lun = unit->fcp_lun;
224 response->data.unit.port_handle = qtcb->header.port_handle;
225 response->data.unit.lun_handle = qtcb->header.lun_handle;
226 break;
227
228 case FSF_QTCB_SEND_ELS:
229 send_els = (struct zfcp_send_els *)fsf_req->data;
230 response->data.send_els.d_id = qtcb->bottom.support.d_id;
231 response->data.send_els.ls_code = send_els->ls_code >> 24;
232 break;
233
234 case FSF_QTCB_ABORT_FCP_CMND:
235 case FSF_QTCB_SEND_GENERIC:
236 case FSF_QTCB_EXCHANGE_CONFIG_DATA:
237 case FSF_QTCB_EXCHANGE_PORT_DATA:
238 case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
239 case FSF_QTCB_UPLOAD_CONTROL_FILE:
240 break;
241 }
242
243 debug_event(adapter->hba_dbf, level,
244 rec, sizeof(struct zfcp_hba_dbf_record));
245 spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags);
246 }
247
248 inline void
249 zfcp_hba_dbf_event_fsf_unsol(const char *tag, struct zfcp_adapter *adapter,
250 struct fsf_status_read_buffer *status_buffer)
251 {
252 struct zfcp_hba_dbf_record *rec = &adapter->hba_dbf_buf;
253 unsigned long flags;
254
255 spin_lock_irqsave(&adapter->hba_dbf_lock, flags);
256 memset(rec, 0, sizeof(struct zfcp_hba_dbf_record));
257 strncpy(rec->tag, "stat", ZFCP_DBF_TAG_SIZE);
258 strncpy(rec->tag2, tag, ZFCP_DBF_TAG_SIZE);
259
260 rec->type.status.failed = adapter->status_read_failed;
261 if (status_buffer != NULL) {
262 rec->type.status.status_type = status_buffer->status_type;
263 rec->type.status.status_subtype = status_buffer->status_subtype;
264 memcpy(&rec->type.status.queue_designator,
265 &status_buffer->queue_designator,
266 sizeof(struct fsf_queue_designator));
267
268 switch (status_buffer->status_type) {
269 case FSF_STATUS_READ_SENSE_DATA_AVAIL:
270 rec->type.status.payload_size =
271 ZFCP_DBF_UNSOL_PAYLOAD_SENSE_DATA_AVAIL;
272 break;
273
274 case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
275 rec->type.status.payload_size =
276 ZFCP_DBF_UNSOL_PAYLOAD_BIT_ERROR_THRESHOLD;
277 break;
278
279 case FSF_STATUS_READ_LINK_DOWN:
280 switch (status_buffer->status_subtype) {
281 case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
282 case FSF_STATUS_READ_SUB_FDISC_FAILED:
283 rec->type.status.payload_size =
284 sizeof(struct fsf_link_down_info);
285 }
286 break;
287
288 case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
289 rec->type.status.payload_size =
290 ZFCP_DBF_UNSOL_PAYLOAD_FEATURE_UPDATE_ALERT;
291 break;
292 }
293 memcpy(&rec->type.status.payload,
294 &status_buffer->payload, rec->type.status.payload_size);
295 }
296
297 debug_event(adapter->hba_dbf, 2,
298 rec, sizeof(struct zfcp_hba_dbf_record));
299 spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags);
300 }
301
302 inline void
303 zfcp_hba_dbf_event_qdio(struct zfcp_adapter *adapter, unsigned int status,
304 unsigned int qdio_error, unsigned int siga_error,
305 int sbal_index, int sbal_count)
306 {
307 struct zfcp_hba_dbf_record *rec = &adapter->hba_dbf_buf;
308 unsigned long flags;
309
310 spin_lock_irqsave(&adapter->hba_dbf_lock, flags);
311 memset(rec, 0, sizeof(struct zfcp_hba_dbf_record));
312 strncpy(rec->tag, "qdio", ZFCP_DBF_TAG_SIZE);
313 rec->type.qdio.status = status;
314 rec->type.qdio.qdio_error = qdio_error;
315 rec->type.qdio.siga_error = siga_error;
316 rec->type.qdio.sbal_index = sbal_index;
317 rec->type.qdio.sbal_count = sbal_count;
318 debug_event(adapter->hba_dbf, 0,
319 rec, sizeof(struct zfcp_hba_dbf_record));
320 spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags);
321 }
322
323 static inline int
324 zfcp_hba_dbf_view_response(char *out_buf,
325 struct zfcp_hba_dbf_record_response *rec)
326 {
327 int len = 0;
328
329 len += zfcp_dbf_view(out_buf + len, "fsf_command", "0x%08x",
330 rec->fsf_command);
331 len += zfcp_dbf_view(out_buf + len, "fsf_reqid", "0x%0Lx",
332 rec->fsf_reqid);
333 len += zfcp_dbf_view(out_buf + len, "fsf_seqno", "0x%08x",
334 rec->fsf_seqno);
335 len += zfcp_dbf_stck(out_buf + len, "fsf_issued", rec->fsf_issued);
336 len += zfcp_dbf_view(out_buf + len, "fsf_prot_status", "0x%08x",
337 rec->fsf_prot_status);
338 len += zfcp_dbf_view(out_buf + len, "fsf_status", "0x%08x",
339 rec->fsf_status);
340 len += zfcp_dbf_view_dump(out_buf + len, "fsf_prot_status_qual",
341 rec->fsf_prot_status_qual,
342 FSF_PROT_STATUS_QUAL_SIZE,
343 0, FSF_PROT_STATUS_QUAL_SIZE);
344 len += zfcp_dbf_view_dump(out_buf + len, "fsf_status_qual",
345 rec->fsf_status_qual,
346 FSF_STATUS_QUALIFIER_SIZE,
347 0, FSF_STATUS_QUALIFIER_SIZE);
348 len += zfcp_dbf_view(out_buf + len, "fsf_req_status", "0x%08x",
349 rec->fsf_req_status);
350 len += zfcp_dbf_view(out_buf + len, "sbal_first", "0x%02x",
351 rec->sbal_first);
352 len += zfcp_dbf_view(out_buf + len, "sbal_curr", "0x%02x",
353 rec->sbal_curr);
354 len += zfcp_dbf_view(out_buf + len, "sbal_last", "0x%02x",
355 rec->sbal_last);
356 len += zfcp_dbf_view(out_buf + len, "pool", "0x%02x", rec->pool);
357
358 switch (rec->fsf_command) {
359 case FSF_QTCB_FCP_CMND:
360 if (rec->fsf_req_status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
361 break;
362 len += zfcp_dbf_view(out_buf + len, "scsi_cmnd", "0x%0Lx",
363 rec->data.send_fcp.scsi_cmnd);
364 len += zfcp_dbf_view(out_buf + len, "scsi_serial", "0x%016Lx",
365 rec->data.send_fcp.scsi_serial);
366 break;
367
368 case FSF_QTCB_OPEN_PORT_WITH_DID:
369 case FSF_QTCB_CLOSE_PORT:
370 case FSF_QTCB_CLOSE_PHYSICAL_PORT:
371 len += zfcp_dbf_view(out_buf + len, "wwpn", "0x%016Lx",
372 rec->data.port.wwpn);
373 len += zfcp_dbf_view(out_buf + len, "d_id", "0x%06x",
374 rec->data.port.d_id);
375 len += zfcp_dbf_view(out_buf + len, "port_handle", "0x%08x",
376 rec->data.port.port_handle);
377 break;
378
379 case FSF_QTCB_OPEN_LUN:
380 case FSF_QTCB_CLOSE_LUN:
381 len += zfcp_dbf_view(out_buf + len, "wwpn", "0x%016Lx",
382 rec->data.unit.wwpn);
383 len += zfcp_dbf_view(out_buf + len, "fcp_lun", "0x%016Lx",
384 rec->data.unit.fcp_lun);
385 len += zfcp_dbf_view(out_buf + len, "port_handle", "0x%08x",
386 rec->data.unit.port_handle);
387 len += zfcp_dbf_view(out_buf + len, "lun_handle", "0x%08x",
388 rec->data.unit.lun_handle);
389 break;
390
391 case FSF_QTCB_SEND_ELS:
392 len += zfcp_dbf_view(out_buf + len, "d_id", "0x%06x",
393 rec->data.send_els.d_id);
394 len += zfcp_dbf_view(out_buf + len, "ls_code", "0x%02x",
395 rec->data.send_els.ls_code);
396 break;
397
398 case FSF_QTCB_ABORT_FCP_CMND:
399 case FSF_QTCB_SEND_GENERIC:
400 case FSF_QTCB_EXCHANGE_CONFIG_DATA:
401 case FSF_QTCB_EXCHANGE_PORT_DATA:
402 case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
403 case FSF_QTCB_UPLOAD_CONTROL_FILE:
404 break;
405 }
406
407 return len;
408 }
409
410 static inline int
411 zfcp_hba_dbf_view_status(char *out_buf, struct zfcp_hba_dbf_record_status *rec)
412 {
413 int len = 0;
414
415 len += zfcp_dbf_view(out_buf + len, "failed", "0x%02x", rec->failed);
416 len += zfcp_dbf_view(out_buf + len, "status_type", "0x%08x",
417 rec->status_type);
418 len += zfcp_dbf_view(out_buf + len, "status_subtype", "0x%08x",
419 rec->status_subtype);
420 len += zfcp_dbf_view_dump(out_buf + len, "queue_designator",
421 (char *)&rec->queue_designator,
422 sizeof(struct fsf_queue_designator),
423 0, sizeof(struct fsf_queue_designator));
424 len += zfcp_dbf_view_dump(out_buf + len, "payload",
425 (char *)&rec->payload,
426 rec->payload_size, 0, rec->payload_size);
427
428 return len;
429 }
430
431 static inline int
432 zfcp_hba_dbf_view_qdio(char *out_buf, struct zfcp_hba_dbf_record_qdio *rec)
433 {
434 int len = 0;
435
436 len += zfcp_dbf_view(out_buf + len, "status", "0x%08x", rec->status);
437 len += zfcp_dbf_view(out_buf + len, "qdio_error", "0x%08x",
438 rec->qdio_error);
439 len += zfcp_dbf_view(out_buf + len, "siga_error", "0x%08x",
440 rec->siga_error);
441 len += zfcp_dbf_view(out_buf + len, "sbal_index", "0x%02x",
442 rec->sbal_index);
443 len += zfcp_dbf_view(out_buf + len, "sbal_count", "0x%02x",
444 rec->sbal_count);
445
446 return len;
447 }
448
449 static int
450 zfcp_hba_dbf_view_format(debug_info_t * id, struct debug_view *view,
451 char *out_buf, const char *in_buf)
452 {
453 struct zfcp_hba_dbf_record *rec = (struct zfcp_hba_dbf_record *)in_buf;
454 int len = 0;
455
456 if (strncmp(rec->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
457 return 0;
458
459 len += zfcp_dbf_tag(out_buf + len, "tag", rec->tag);
460 if (isalpha(rec->tag2[0]))
461 len += zfcp_dbf_tag(out_buf + len, "tag2", rec->tag2);
462 if (strncmp(rec->tag, "resp", ZFCP_DBF_TAG_SIZE) == 0)
463 len += zfcp_hba_dbf_view_response(out_buf + len,
464 &rec->type.response);
465 else if (strncmp(rec->tag, "stat", ZFCP_DBF_TAG_SIZE) == 0)
466 len += zfcp_hba_dbf_view_status(out_buf + len,
467 &rec->type.status);
468 else if (strncmp(rec->tag, "qdio", ZFCP_DBF_TAG_SIZE) == 0)
469 len += zfcp_hba_dbf_view_qdio(out_buf + len, &rec->type.qdio);
470
471 len += sprintf(out_buf + len, "\n");
472
473 return len;
474 }
475
476 struct debug_view zfcp_hba_dbf_view = {
477 "structured",
478 NULL,
479 &zfcp_dbf_view_header,
480 &zfcp_hba_dbf_view_format,
481 NULL,
482 NULL
483 };
484
485 inline void
486 _zfcp_san_dbf_event_common_ct(const char *tag, struct zfcp_fsf_req *fsf_req,
487 u32 s_id, u32 d_id, void *buffer, int buflen)
488 {
489 struct zfcp_send_ct *send_ct = (struct zfcp_send_ct *)fsf_req->data;
490 struct zfcp_port *port = send_ct->port;
491 struct zfcp_adapter *adapter = port->adapter;
492 struct ct_hdr *header = (struct ct_hdr *)buffer;
493 struct zfcp_san_dbf_record *rec = &adapter->san_dbf_buf;
494 struct zfcp_san_dbf_record_ct *ct = &rec->type.ct;
495 unsigned long flags;
496
497 spin_lock_irqsave(&adapter->san_dbf_lock, flags);
498 memset(rec, 0, sizeof(struct zfcp_san_dbf_record));
499 strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
500 rec->fsf_reqid = (unsigned long)fsf_req;
501 rec->fsf_seqno = fsf_req->seq_no;
502 rec->s_id = s_id;
503 rec->d_id = d_id;
504 if (strncmp(tag, "octc", ZFCP_DBF_TAG_SIZE) == 0) {
505 ct->type.request.cmd_req_code = header->cmd_rsp_code;
506 ct->type.request.revision = header->revision;
507 ct->type.request.gs_type = header->gs_type;
508 ct->type.request.gs_subtype = header->gs_subtype;
509 ct->type.request.options = header->options;
510 ct->type.request.max_res_size = header->max_res_size;
511 } else if (strncmp(tag, "rctc", ZFCP_DBF_TAG_SIZE) == 0) {
512 ct->type.response.cmd_rsp_code = header->cmd_rsp_code;
513 ct->type.response.revision = header->revision;
514 ct->type.response.reason_code = header->reason_code;
515 ct->type.response.reason_code_expl = header->reason_code_expl;
516 ct->type.response.vendor_unique = header->vendor_unique;
517 }
518 ct->payload_size =
519 min(buflen - (int)sizeof(struct ct_hdr), ZFCP_DBF_CT_PAYLOAD);
520 memcpy(ct->payload, buffer + sizeof(struct ct_hdr), ct->payload_size);
521 debug_event(adapter->san_dbf, 3,
522 rec, sizeof(struct zfcp_san_dbf_record));
523 spin_unlock_irqrestore(&adapter->san_dbf_lock, flags);
524 }
525
526 inline void zfcp_san_dbf_event_ct_request(struct zfcp_fsf_req *fsf_req)
527 {
528 struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data;
529 struct zfcp_port *port = ct->port;
530 struct zfcp_adapter *adapter = port->adapter;
531
532 _zfcp_san_dbf_event_common_ct("octc", fsf_req,
533 fc_host_port_id(adapter->scsi_host),
534 port->d_id, zfcp_sg_to_address(ct->req),
535 ct->req->length);
536 }
537
538 inline void zfcp_san_dbf_event_ct_response(struct zfcp_fsf_req *fsf_req)
539 {
540 struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data;
541 struct zfcp_port *port = ct->port;
542 struct zfcp_adapter *adapter = port->adapter;
543
544 _zfcp_san_dbf_event_common_ct("rctc", fsf_req, port->d_id,
545 fc_host_port_id(adapter->scsi_host),
546 zfcp_sg_to_address(ct->resp),
547 ct->resp->length);
548 }
549
550 static inline void
551 _zfcp_san_dbf_event_common_els(const char *tag, int level,
552 struct zfcp_fsf_req *fsf_req, u32 s_id,
553 u32 d_id, u8 ls_code, void *buffer, int buflen)
554 {
555 struct zfcp_adapter *adapter = fsf_req->adapter;
556 struct zfcp_san_dbf_record *rec = &adapter->san_dbf_buf;
557 struct zfcp_dbf_dump *dump = (struct zfcp_dbf_dump *)rec;
558 unsigned long flags;
559 int offset = 0;
560
561 spin_lock_irqsave(&adapter->san_dbf_lock, flags);
562 do {
563 memset(rec, 0, sizeof(struct zfcp_san_dbf_record));
564 if (offset == 0) {
565 strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
566 rec->fsf_reqid = (unsigned long)fsf_req;
567 rec->fsf_seqno = fsf_req->seq_no;
568 rec->s_id = s_id;
569 rec->d_id = d_id;
570 rec->type.els.ls_code = ls_code;
571 buflen = min(buflen, ZFCP_DBF_ELS_MAX_PAYLOAD);
572 rec->type.els.payload_size = buflen;
573 memcpy(rec->type.els.payload,
574 buffer, min(buflen, ZFCP_DBF_ELS_PAYLOAD));
575 offset += min(buflen, ZFCP_DBF_ELS_PAYLOAD);
576 } else {
577 strncpy(dump->tag, "dump", ZFCP_DBF_TAG_SIZE);
578 dump->total_size = buflen;
579 dump->offset = offset;
580 dump->size = min(buflen - offset,
581 (int)sizeof(struct zfcp_san_dbf_record)
582 - (int)sizeof(struct zfcp_dbf_dump));
583 memcpy(dump->data, buffer + offset, dump->size);
584 offset += dump->size;
585 }
586 debug_event(adapter->san_dbf, level,
587 rec, sizeof(struct zfcp_san_dbf_record));
588 } while (offset < buflen);
589 spin_unlock_irqrestore(&adapter->san_dbf_lock, flags);
590 }
591
592 inline void zfcp_san_dbf_event_els_request(struct zfcp_fsf_req *fsf_req)
593 {
594 struct zfcp_send_els *els = (struct zfcp_send_els *)fsf_req->data;
595
596 _zfcp_san_dbf_event_common_els("oels", 2, fsf_req,
597 fc_host_port_id(els->adapter->scsi_host),
598 els->d_id,
599 *(u8 *) zfcp_sg_to_address(els->req),
600 zfcp_sg_to_address(els->req),
601 els->req->length);
602 }
603
604 inline void zfcp_san_dbf_event_els_response(struct zfcp_fsf_req *fsf_req)
605 {
606 struct zfcp_send_els *els = (struct zfcp_send_els *)fsf_req->data;
607
608 _zfcp_san_dbf_event_common_els("rels", 2, fsf_req, els->d_id,
609 fc_host_port_id(els->adapter->scsi_host),
610 *(u8 *) zfcp_sg_to_address(els->req),
611 zfcp_sg_to_address(els->resp),
612 els->resp->length);
613 }
614
615 inline void zfcp_san_dbf_event_incoming_els(struct zfcp_fsf_req *fsf_req)
616 {
617 struct zfcp_adapter *adapter = fsf_req->adapter;
618 struct fsf_status_read_buffer *status_buffer =
619 (struct fsf_status_read_buffer *)fsf_req->data;
620 int length = (int)status_buffer->length -
621 (int)((void *)&status_buffer->payload - (void *)status_buffer);
622
623 _zfcp_san_dbf_event_common_els("iels", 1, fsf_req, status_buffer->d_id,
624 fc_host_port_id(adapter->scsi_host),
625 *(u8 *) status_buffer->payload,
626 (void *)status_buffer->payload, length);
627 }
628
629 static int
630 zfcp_san_dbf_view_format(debug_info_t * id, struct debug_view *view,
631 char *out_buf, const char *in_buf)
632 {
633 struct zfcp_san_dbf_record *rec = (struct zfcp_san_dbf_record *)in_buf;
634 char *buffer = NULL;
635 int buflen = 0, total = 0;
636 int len = 0;
637
638 if (strncmp(rec->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
639 return 0;
640
641 len += zfcp_dbf_tag(out_buf + len, "tag", rec->tag);
642 len += zfcp_dbf_view(out_buf + len, "fsf_reqid", "0x%0Lx",
643 rec->fsf_reqid);
644 len += zfcp_dbf_view(out_buf + len, "fsf_seqno", "0x%08x",
645 rec->fsf_seqno);
646 len += zfcp_dbf_view(out_buf + len, "s_id", "0x%06x", rec->s_id);
647 len += zfcp_dbf_view(out_buf + len, "d_id", "0x%06x", rec->d_id);
648
649 if (strncmp(rec->tag, "octc", ZFCP_DBF_TAG_SIZE) == 0) {
650 len += zfcp_dbf_view(out_buf + len, "cmd_req_code", "0x%04x",
651 rec->type.ct.type.request.cmd_req_code);
652 len += zfcp_dbf_view(out_buf + len, "revision", "0x%02x",
653 rec->type.ct.type.request.revision);
654 len += zfcp_dbf_view(out_buf + len, "gs_type", "0x%02x",
655 rec->type.ct.type.request.gs_type);
656 len += zfcp_dbf_view(out_buf + len, "gs_subtype", "0x%02x",
657 rec->type.ct.type.request.gs_subtype);
658 len += zfcp_dbf_view(out_buf + len, "options", "0x%02x",
659 rec->type.ct.type.request.options);
660 len += zfcp_dbf_view(out_buf + len, "max_res_size", "0x%04x",
661 rec->type.ct.type.request.max_res_size);
662 total = rec->type.ct.payload_size;
663 buffer = rec->type.ct.payload;
664 buflen = min(total, ZFCP_DBF_CT_PAYLOAD);
665 } else if (strncmp(rec->tag, "rctc", ZFCP_DBF_TAG_SIZE) == 0) {
666 len += zfcp_dbf_view(out_buf + len, "cmd_rsp_code", "0x%04x",
667 rec->type.ct.type.response.cmd_rsp_code);
668 len += zfcp_dbf_view(out_buf + len, "revision", "0x%02x",
669 rec->type.ct.type.response.revision);
670 len += zfcp_dbf_view(out_buf + len, "reason_code", "0x%02x",
671 rec->type.ct.type.response.reason_code);
672 len +=
673 zfcp_dbf_view(out_buf + len, "reason_code_expl", "0x%02x",
674 rec->type.ct.type.response.reason_code_expl);
675 len +=
676 zfcp_dbf_view(out_buf + len, "vendor_unique", "0x%02x",
677 rec->type.ct.type.response.vendor_unique);
678 total = rec->type.ct.payload_size;
679 buffer = rec->type.ct.payload;
680 buflen = min(total, ZFCP_DBF_CT_PAYLOAD);
681 } else if (strncmp(rec->tag, "oels", ZFCP_DBF_TAG_SIZE) == 0 ||
682 strncmp(rec->tag, "rels", ZFCP_DBF_TAG_SIZE) == 0 ||
683 strncmp(rec->tag, "iels", ZFCP_DBF_TAG_SIZE) == 0) {
684 len += zfcp_dbf_view(out_buf + len, "ls_code", "0x%02x",
685 rec->type.els.ls_code);
686 total = rec->type.els.payload_size;
687 buffer = rec->type.els.payload;
688 buflen = min(total, ZFCP_DBF_ELS_PAYLOAD);
689 }
690
691 len += zfcp_dbf_view_dump(out_buf + len, "payload",
692 buffer, buflen, 0, total);
693
694 if (buflen == total)
695 len += sprintf(out_buf + len, "\n");
696
697 return len;
698 }
699
700 struct debug_view zfcp_san_dbf_view = {
701 "structured",
702 NULL,
703 &zfcp_dbf_view_header,
704 &zfcp_san_dbf_view_format,
705 NULL,
706 NULL
707 };
708
709 static inline void
710 _zfcp_scsi_dbf_event_common(const char *tag, const char *tag2, int level,
711 struct zfcp_adapter *adapter,
712 struct scsi_cmnd *scsi_cmnd,
713 struct zfcp_fsf_req *fsf_req,
714 struct zfcp_fsf_req *old_fsf_req)
715 {
716 struct zfcp_scsi_dbf_record *rec = &adapter->scsi_dbf_buf;
717 struct zfcp_dbf_dump *dump = (struct zfcp_dbf_dump *)rec;
718 unsigned long flags;
719 struct fcp_rsp_iu *fcp_rsp;
720 char *fcp_rsp_info = NULL, *fcp_sns_info = NULL;
721 int offset = 0, buflen = 0;
722
723 spin_lock_irqsave(&adapter->scsi_dbf_lock, flags);
724 do {
725 memset(rec, 0, sizeof(struct zfcp_scsi_dbf_record));
726 if (offset == 0) {
727 strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
728 strncpy(rec->tag2, tag2, ZFCP_DBF_TAG_SIZE);
729 if (scsi_cmnd != NULL) {
730 if (scsi_cmnd->device) {
731 rec->scsi_id = scsi_cmnd->device->id;
732 rec->scsi_lun = scsi_cmnd->device->lun;
733 }
734 rec->scsi_result = scsi_cmnd->result;
735 rec->scsi_cmnd = (unsigned long)scsi_cmnd;
736 rec->scsi_serial = scsi_cmnd->serial_number;
737 memcpy(rec->scsi_opcode, &scsi_cmnd->cmnd,
738 min((int)scsi_cmnd->cmd_len,
739 ZFCP_DBF_SCSI_OPCODE));
740 rec->scsi_retries = scsi_cmnd->retries;
741 rec->scsi_allowed = scsi_cmnd->allowed;
742 }
743 if (fsf_req != NULL) {
744 fcp_rsp = (struct fcp_rsp_iu *)
745 &(fsf_req->qtcb->bottom.io.fcp_rsp);
746 fcp_rsp_info =
747 zfcp_get_fcp_rsp_info_ptr(fcp_rsp);
748 fcp_sns_info =
749 zfcp_get_fcp_sns_info_ptr(fcp_rsp);
750
751 rec->type.fcp.rsp_validity =
752 fcp_rsp->validity.value;
753 rec->type.fcp.rsp_scsi_status =
754 fcp_rsp->scsi_status;
755 rec->type.fcp.rsp_resid = fcp_rsp->fcp_resid;
756 if (fcp_rsp->validity.bits.fcp_rsp_len_valid)
757 rec->type.fcp.rsp_code =
758 *(fcp_rsp_info + 3);
759 if (fcp_rsp->validity.bits.fcp_sns_len_valid) {
760 buflen = min((int)fcp_rsp->fcp_sns_len,
761 ZFCP_DBF_SCSI_MAX_FCP_SNS_INFO);
762 rec->type.fcp.sns_info_len = buflen;
763 memcpy(rec->type.fcp.sns_info,
764 fcp_sns_info,
765 min(buflen,
766 ZFCP_DBF_SCSI_FCP_SNS_INFO));
767 offset += min(buflen,
768 ZFCP_DBF_SCSI_FCP_SNS_INFO);
769 }
770
771 rec->fsf_reqid = (unsigned long)fsf_req;
772 rec->fsf_seqno = fsf_req->seq_no;
773 rec->fsf_issued = fsf_req->issued;
774 }
775 rec->type.old_fsf_reqid =
776 (unsigned long) old_fsf_req;
777 } else {
778 strncpy(dump->tag, "dump", ZFCP_DBF_TAG_SIZE);
779 dump->total_size = buflen;
780 dump->offset = offset;
781 dump->size = min(buflen - offset,
782 (int)sizeof(struct
783 zfcp_scsi_dbf_record) -
784 (int)sizeof(struct zfcp_dbf_dump));
785 memcpy(dump->data, fcp_sns_info + offset, dump->size);
786 offset += dump->size;
787 }
788 debug_event(adapter->scsi_dbf, level,
789 rec, sizeof(struct zfcp_scsi_dbf_record));
790 } while (offset < buflen);
791 spin_unlock_irqrestore(&adapter->scsi_dbf_lock, flags);
792 }
793
794 inline void
795 zfcp_scsi_dbf_event_result(const char *tag, int level,
796 struct zfcp_adapter *adapter,
797 struct scsi_cmnd *scsi_cmnd,
798 struct zfcp_fsf_req *fsf_req)
799 {
800 _zfcp_scsi_dbf_event_common("rslt", tag, level,
801 adapter, scsi_cmnd, fsf_req, NULL);
802 }
803
804 inline void
805 zfcp_scsi_dbf_event_abort(const char *tag, struct zfcp_adapter *adapter,
806 struct scsi_cmnd *scsi_cmnd,
807 struct zfcp_fsf_req *new_fsf_req,
808 struct zfcp_fsf_req *old_fsf_req)
809 {
810 _zfcp_scsi_dbf_event_common("abrt", tag, 1,
811 adapter, scsi_cmnd, new_fsf_req, old_fsf_req);
812 }
813
814 inline void
815 zfcp_scsi_dbf_event_devreset(const char *tag, u8 flag, struct zfcp_unit *unit,
816 struct scsi_cmnd *scsi_cmnd)
817 {
818 struct zfcp_adapter *adapter = unit->port->adapter;
819
820 _zfcp_scsi_dbf_event_common(flag == FCP_TARGET_RESET ? "trst" : "lrst",
821 tag, 1, adapter, scsi_cmnd, NULL, NULL);
822 }
823
824 static int
825 zfcp_scsi_dbf_view_format(debug_info_t * id, struct debug_view *view,
826 char *out_buf, const char *in_buf)
827 {
828 struct zfcp_scsi_dbf_record *rec =
829 (struct zfcp_scsi_dbf_record *)in_buf;
830 int len = 0;
831
832 if (strncmp(rec->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
833 return 0;
834
835 len += zfcp_dbf_tag(out_buf + len, "tag", rec->tag);
836 len += zfcp_dbf_tag(out_buf + len, "tag2", rec->tag2);
837 len += zfcp_dbf_view(out_buf + len, "scsi_id", "0x%08x", rec->scsi_id);
838 len += zfcp_dbf_view(out_buf + len, "scsi_lun", "0x%08x",
839 rec->scsi_lun);
840 len += zfcp_dbf_view(out_buf + len, "scsi_result", "0x%08x",
841 rec->scsi_result);
842 len += zfcp_dbf_view(out_buf + len, "scsi_cmnd", "0x%0Lx",
843 rec->scsi_cmnd);
844 len += zfcp_dbf_view(out_buf + len, "scsi_serial", "0x%016Lx",
845 rec->scsi_serial);
846 len += zfcp_dbf_view_dump(out_buf + len, "scsi_opcode",
847 rec->scsi_opcode,
848 ZFCP_DBF_SCSI_OPCODE,
849 0, ZFCP_DBF_SCSI_OPCODE);
850 len += zfcp_dbf_view(out_buf + len, "scsi_retries", "0x%02x",
851 rec->scsi_retries);
852 len += zfcp_dbf_view(out_buf + len, "scsi_allowed", "0x%02x",
853 rec->scsi_allowed);
854 if (strncmp(rec->tag, "abrt", ZFCP_DBF_TAG_SIZE) == 0) {
855 len += zfcp_dbf_view(out_buf + len, "old_fsf_reqid", "0x%0Lx",
856 rec->type.old_fsf_reqid);
857 }
858 len += zfcp_dbf_view(out_buf + len, "fsf_reqid", "0x%0Lx",
859 rec->fsf_reqid);
860 len += zfcp_dbf_view(out_buf + len, "fsf_seqno", "0x%08x",
861 rec->fsf_seqno);
862 len += zfcp_dbf_stck(out_buf + len, "fsf_issued", rec->fsf_issued);
863 if (strncmp(rec->tag, "rslt", ZFCP_DBF_TAG_SIZE) == 0) {
864 len +=
865 zfcp_dbf_view(out_buf + len, "fcp_rsp_validity", "0x%02x",
866 rec->type.fcp.rsp_validity);
867 len +=
868 zfcp_dbf_view(out_buf + len, "fcp_rsp_scsi_status",
869 "0x%02x", rec->type.fcp.rsp_scsi_status);
870 len +=
871 zfcp_dbf_view(out_buf + len, "fcp_rsp_resid", "0x%08x",
872 rec->type.fcp.rsp_resid);
873 len +=
874 zfcp_dbf_view(out_buf + len, "fcp_rsp_code", "0x%08x",
875 rec->type.fcp.rsp_code);
876 len +=
877 zfcp_dbf_view(out_buf + len, "fcp_sns_info_len", "0x%08x",
878 rec->type.fcp.sns_info_len);
879 len +=
880 zfcp_dbf_view_dump(out_buf + len, "fcp_sns_info",
881 rec->type.fcp.sns_info,
882 min((int)rec->type.fcp.sns_info_len,
883 ZFCP_DBF_SCSI_FCP_SNS_INFO), 0,
884 rec->type.fcp.sns_info_len);
885 }
886
887 len += sprintf(out_buf + len, "\n");
888
889 return len;
890 }
891
892 struct debug_view zfcp_scsi_dbf_view = {
893 "structured",
894 NULL,
895 &zfcp_dbf_view_header,
896 &zfcp_scsi_dbf_view_format,
897 NULL,
898 NULL
899 };
900
901 /**
902 * zfcp_adapter_debug_register - registers debug feature for an adapter
903 * @adapter: pointer to adapter for which debug features should be registered
904 * return: -ENOMEM on error, 0 otherwise
905 */
906 int zfcp_adapter_debug_register(struct zfcp_adapter *adapter)
907 {
908 char dbf_name[DEBUG_MAX_NAME_LEN];
909
910 /* debug feature area which records recovery activity */
911 sprintf(dbf_name, "zfcp_%s_erp", zfcp_get_busid_by_adapter(adapter));
912 adapter->erp_dbf = debug_register(dbf_name, dbfsize, 2,
913 sizeof(struct zfcp_erp_dbf_record));
914 if (!adapter->erp_dbf)
915 goto failed;
916 debug_register_view(adapter->erp_dbf, &debug_hex_ascii_view);
917 debug_set_level(adapter->erp_dbf, 3);
918
919 /* debug feature area which records HBA (FSF and QDIO) conditions */
920 sprintf(dbf_name, "zfcp_%s_hba", zfcp_get_busid_by_adapter(adapter));
921 adapter->hba_dbf = debug_register(dbf_name, dbfsize, 1,
922 sizeof(struct zfcp_hba_dbf_record));
923 if (!adapter->hba_dbf)
924 goto failed;
925 debug_register_view(adapter->hba_dbf, &debug_hex_ascii_view);
926 debug_register_view(adapter->hba_dbf, &zfcp_hba_dbf_view);
927 debug_set_level(adapter->hba_dbf, 3);
928
929 /* debug feature area which records SAN command failures and recovery */
930 sprintf(dbf_name, "zfcp_%s_san", zfcp_get_busid_by_adapter(adapter));
931 adapter->san_dbf = debug_register(dbf_name, dbfsize, 1,
932 sizeof(struct zfcp_san_dbf_record));
933 if (!adapter->san_dbf)
934 goto failed;
935 debug_register_view(adapter->san_dbf, &debug_hex_ascii_view);
936 debug_register_view(adapter->san_dbf, &zfcp_san_dbf_view);
937 debug_set_level(adapter->san_dbf, 6);
938
939 /* debug feature area which records SCSI command failures and recovery */
940 sprintf(dbf_name, "zfcp_%s_scsi", zfcp_get_busid_by_adapter(adapter));
941 adapter->scsi_dbf = debug_register(dbf_name, dbfsize, 1,
942 sizeof(struct zfcp_scsi_dbf_record));
943 if (!adapter->scsi_dbf)
944 goto failed;
945 debug_register_view(adapter->scsi_dbf, &debug_hex_ascii_view);
946 debug_register_view(adapter->scsi_dbf, &zfcp_scsi_dbf_view);
947 debug_set_level(adapter->scsi_dbf, 3);
948
949 return 0;
950
951 failed:
952 zfcp_adapter_debug_unregister(adapter);
953
954 return -ENOMEM;
955 }
956
957 /**
958 * zfcp_adapter_debug_unregister - unregisters debug feature for an adapter
959 * @adapter: pointer to adapter for which debug features should be unregistered
960 */
961 void zfcp_adapter_debug_unregister(struct zfcp_adapter *adapter)
962 {
963 debug_unregister(adapter->scsi_dbf);
964 debug_unregister(adapter->san_dbf);
965 debug_unregister(adapter->hba_dbf);
966 debug_unregister(adapter->erp_dbf);
967 adapter->scsi_dbf = NULL;
968 adapter->san_dbf = NULL;
969 adapter->hba_dbf = NULL;
970 adapter->erp_dbf = NULL;
971 }
972
973 #undef ZFCP_LOG_AREA
Linux with added FPC-III support