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Merge git://git.infradead.org/~kmpark/onenand-mtd-2.6
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / s390 / scsi / zfcp_dbf.c
1 /*
2 * This file is part of the zfcp device driver for
3 * FCP adapters for IBM System z9 and zSeries.
4 *
5 * (C) Copyright IBM Corp. 2002, 2006
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2, or (at your option)
10 * any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 */
21
22 #include <linux/ctype.h>
23 #include <asm/debug.h>
24 #include "zfcp_ext.h"
25
26 static u32 dbfsize = 4;
27
28 module_param(dbfsize, uint, 0400);
29 MODULE_PARM_DESC(dbfsize,
30 "number of pages for each debug feature area (default 4)");
31
32 #define ZFCP_LOG_AREA ZFCP_LOG_AREA_OTHER
33
34 static int
35 zfcp_dbf_stck(char *out_buf, const char *label, unsigned long long stck)
36 {
37 unsigned long long sec;
38 struct timespec dbftime;
39 int len = 0;
40
41 stck -= 0x8126d60e46000000LL - (0x3c26700LL * 1000000 * 4096);
42 sec = stck >> 12;
43 do_div(sec, 1000000);
44 dbftime.tv_sec = sec;
45 stck -= (sec * 1000000) << 12;
46 dbftime.tv_nsec = ((stck * 1000) >> 12);
47 len += sprintf(out_buf + len, "%-24s%011lu:%06lu\n",
48 label, dbftime.tv_sec, dbftime.tv_nsec);
49
50 return len;
51 }
52
53 static int zfcp_dbf_tag(char *out_buf, const char *label, const char *tag)
54 {
55 int len = 0, i;
56
57 len += sprintf(out_buf + len, "%-24s", label);
58 for (i = 0; i < ZFCP_DBF_TAG_SIZE; i++)
59 len += sprintf(out_buf + len, "%c", tag[i]);
60 len += sprintf(out_buf + len, "\n");
61
62 return len;
63 }
64
65 static int
66 zfcp_dbf_view(char *out_buf, const char *label, const char *format, ...)
67 {
68 va_list arg;
69 int len = 0;
70
71 len += sprintf(out_buf + len, "%-24s", label);
72 va_start(arg, format);
73 len += vsprintf(out_buf + len, format, arg);
74 va_end(arg);
75 len += sprintf(out_buf + len, "\n");
76
77 return len;
78 }
79
80 static int
81 zfcp_dbf_view_dump(char *out_buf, const char *label,
82 char *buffer, int buflen, int offset, int total_size)
83 {
84 int len = 0;
85
86 if (offset == 0)
87 len += sprintf(out_buf + len, "%-24s ", label);
88
89 while (buflen--) {
90 if (offset > 0) {
91 if ((offset % 32) == 0)
92 len += sprintf(out_buf + len, "\n%-24c ", ' ');
93 else if ((offset % 4) == 0)
94 len += sprintf(out_buf + len, " ");
95 }
96 len += sprintf(out_buf + len, "%02x", *buffer++);
97 if (++offset == total_size) {
98 len += sprintf(out_buf + len, "\n");
99 break;
100 }
101 }
102
103 if (total_size == 0)
104 len += sprintf(out_buf + len, "\n");
105
106 return len;
107 }
108
109 static int
110 zfcp_dbf_view_header(debug_info_t * id, struct debug_view *view, int area,
111 debug_entry_t * entry, char *out_buf)
112 {
113 struct zfcp_dbf_dump *dump = (struct zfcp_dbf_dump *)DEBUG_DATA(entry);
114 int len = 0;
115
116 if (strncmp(dump->tag, "dump", ZFCP_DBF_TAG_SIZE) != 0) {
117 len += zfcp_dbf_stck(out_buf + len, "timestamp",
118 entry->id.stck);
119 len += zfcp_dbf_view(out_buf + len, "cpu", "%02i",
120 entry->id.fields.cpuid);
121 } else {
122 len += zfcp_dbf_view_dump(out_buf + len, NULL,
123 dump->data,
124 dump->size,
125 dump->offset, dump->total_size);
126 if ((dump->offset + dump->size) == dump->total_size)
127 len += sprintf(out_buf + len, "\n");
128 }
129
130 return len;
131 }
132
133 void zfcp_hba_dbf_event_fsf_response(struct zfcp_fsf_req *fsf_req)
134 {
135 struct zfcp_adapter *adapter = fsf_req->adapter;
136 struct fsf_qtcb *qtcb = fsf_req->qtcb;
137 union fsf_prot_status_qual *prot_status_qual =
138 &qtcb->prefix.prot_status_qual;
139 union fsf_status_qual *fsf_status_qual = &qtcb->header.fsf_status_qual;
140 struct scsi_cmnd *scsi_cmnd;
141 struct zfcp_port *port;
142 struct zfcp_unit *unit;
143 struct zfcp_send_els *send_els;
144 struct zfcp_hba_dbf_record *rec = &adapter->hba_dbf_buf;
145 struct zfcp_hba_dbf_record_response *response = &rec->type.response;
146 int level;
147 unsigned long flags;
148
149 spin_lock_irqsave(&adapter->hba_dbf_lock, flags);
150 memset(rec, 0, sizeof(struct zfcp_hba_dbf_record));
151 strncpy(rec->tag, "resp", ZFCP_DBF_TAG_SIZE);
152
153 if ((qtcb->prefix.prot_status != FSF_PROT_GOOD) &&
154 (qtcb->prefix.prot_status != FSF_PROT_FSF_STATUS_PRESENTED)) {
155 strncpy(rec->tag2, "perr", ZFCP_DBF_TAG_SIZE);
156 level = 1;
157 } else if (qtcb->header.fsf_status != FSF_GOOD) {
158 strncpy(rec->tag2, "ferr", ZFCP_DBF_TAG_SIZE);
159 level = 1;
160 } else if ((fsf_req->fsf_command == FSF_QTCB_OPEN_PORT_WITH_DID) ||
161 (fsf_req->fsf_command == FSF_QTCB_OPEN_LUN)) {
162 strncpy(rec->tag2, "open", ZFCP_DBF_TAG_SIZE);
163 level = 4;
164 } else {
165 strncpy(rec->tag2, "norm", ZFCP_DBF_TAG_SIZE);
166 level = 6;
167 }
168
169 response->fsf_command = fsf_req->fsf_command;
170 response->fsf_reqid = (unsigned long)fsf_req;
171 response->fsf_seqno = fsf_req->seq_no;
172 response->fsf_issued = fsf_req->issued;
173 response->fsf_prot_status = qtcb->prefix.prot_status;
174 response->fsf_status = qtcb->header.fsf_status;
175 memcpy(response->fsf_prot_status_qual,
176 prot_status_qual, FSF_PROT_STATUS_QUAL_SIZE);
177 memcpy(response->fsf_status_qual,
178 fsf_status_qual, FSF_STATUS_QUALIFIER_SIZE);
179 response->fsf_req_status = fsf_req->status;
180 response->sbal_first = fsf_req->sbal_first;
181 response->sbal_curr = fsf_req->sbal_curr;
182 response->sbal_last = fsf_req->sbal_last;
183 response->pool = fsf_req->pool != NULL;
184 response->erp_action = (unsigned long)fsf_req->erp_action;
185
186 switch (fsf_req->fsf_command) {
187 case FSF_QTCB_FCP_CMND:
188 if (fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
189 break;
190 scsi_cmnd = (struct scsi_cmnd *)fsf_req->data;
191 if (scsi_cmnd != NULL) {
192 response->data.send_fcp.scsi_cmnd
193 = (unsigned long)scsi_cmnd;
194 response->data.send_fcp.scsi_serial
195 = scsi_cmnd->serial_number;
196 }
197 break;
198
199 case FSF_QTCB_OPEN_PORT_WITH_DID:
200 case FSF_QTCB_CLOSE_PORT:
201 case FSF_QTCB_CLOSE_PHYSICAL_PORT:
202 port = (struct zfcp_port *)fsf_req->data;
203 response->data.port.wwpn = port->wwpn;
204 response->data.port.d_id = port->d_id;
205 response->data.port.port_handle = qtcb->header.port_handle;
206 break;
207
208 case FSF_QTCB_OPEN_LUN:
209 case FSF_QTCB_CLOSE_LUN:
210 unit = (struct zfcp_unit *)fsf_req->data;
211 port = unit->port;
212 response->data.unit.wwpn = port->wwpn;
213 response->data.unit.fcp_lun = unit->fcp_lun;
214 response->data.unit.port_handle = qtcb->header.port_handle;
215 response->data.unit.lun_handle = qtcb->header.lun_handle;
216 break;
217
218 case FSF_QTCB_SEND_ELS:
219 send_els = (struct zfcp_send_els *)fsf_req->data;
220 response->data.send_els.d_id = qtcb->bottom.support.d_id;
221 response->data.send_els.ls_code = send_els->ls_code >> 24;
222 break;
223
224 case FSF_QTCB_ABORT_FCP_CMND:
225 case FSF_QTCB_SEND_GENERIC:
226 case FSF_QTCB_EXCHANGE_CONFIG_DATA:
227 case FSF_QTCB_EXCHANGE_PORT_DATA:
228 case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
229 case FSF_QTCB_UPLOAD_CONTROL_FILE:
230 break;
231 }
232
233 debug_event(adapter->hba_dbf, level,
234 rec, sizeof(struct zfcp_hba_dbf_record));
235 spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags);
236 }
237
238 void
239 zfcp_hba_dbf_event_fsf_unsol(const char *tag, struct zfcp_adapter *adapter,
240 struct fsf_status_read_buffer *status_buffer)
241 {
242 struct zfcp_hba_dbf_record *rec = &adapter->hba_dbf_buf;
243 unsigned long flags;
244
245 spin_lock_irqsave(&adapter->hba_dbf_lock, flags);
246 memset(rec, 0, sizeof(struct zfcp_hba_dbf_record));
247 strncpy(rec->tag, "stat", ZFCP_DBF_TAG_SIZE);
248 strncpy(rec->tag2, tag, ZFCP_DBF_TAG_SIZE);
249
250 rec->type.status.failed = adapter->status_read_failed;
251 if (status_buffer != NULL) {
252 rec->type.status.status_type = status_buffer->status_type;
253 rec->type.status.status_subtype = status_buffer->status_subtype;
254 memcpy(&rec->type.status.queue_designator,
255 &status_buffer->queue_designator,
256 sizeof(struct fsf_queue_designator));
257
258 switch (status_buffer->status_type) {
259 case FSF_STATUS_READ_SENSE_DATA_AVAIL:
260 rec->type.status.payload_size =
261 ZFCP_DBF_UNSOL_PAYLOAD_SENSE_DATA_AVAIL;
262 break;
263
264 case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
265 rec->type.status.payload_size =
266 ZFCP_DBF_UNSOL_PAYLOAD_BIT_ERROR_THRESHOLD;
267 break;
268
269 case FSF_STATUS_READ_LINK_DOWN:
270 switch (status_buffer->status_subtype) {
271 case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
272 case FSF_STATUS_READ_SUB_FDISC_FAILED:
273 rec->type.status.payload_size =
274 sizeof(struct fsf_link_down_info);
275 }
276 break;
277
278 case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
279 rec->type.status.payload_size =
280 ZFCP_DBF_UNSOL_PAYLOAD_FEATURE_UPDATE_ALERT;
281 break;
282 }
283 memcpy(&rec->type.status.payload,
284 &status_buffer->payload, rec->type.status.payload_size);
285 }
286
287 debug_event(adapter->hba_dbf, 2,
288 rec, sizeof(struct zfcp_hba_dbf_record));
289 spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags);
290 }
291
292 void
293 zfcp_hba_dbf_event_qdio(struct zfcp_adapter *adapter, unsigned int status,
294 unsigned int qdio_error, unsigned int siga_error,
295 int sbal_index, int sbal_count)
296 {
297 struct zfcp_hba_dbf_record *rec = &adapter->hba_dbf_buf;
298 unsigned long flags;
299
300 spin_lock_irqsave(&adapter->hba_dbf_lock, flags);
301 memset(rec, 0, sizeof(struct zfcp_hba_dbf_record));
302 strncpy(rec->tag, "qdio", ZFCP_DBF_TAG_SIZE);
303 rec->type.qdio.status = status;
304 rec->type.qdio.qdio_error = qdio_error;
305 rec->type.qdio.siga_error = siga_error;
306 rec->type.qdio.sbal_index = sbal_index;
307 rec->type.qdio.sbal_count = sbal_count;
308 debug_event(adapter->hba_dbf, 0,
309 rec, sizeof(struct zfcp_hba_dbf_record));
310 spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags);
311 }
312
313 static int
314 zfcp_hba_dbf_view_response(char *out_buf,
315 struct zfcp_hba_dbf_record_response *rec)
316 {
317 int len = 0;
318
319 len += zfcp_dbf_view(out_buf + len, "fsf_command", "0x%08x",
320 rec->fsf_command);
321 len += zfcp_dbf_view(out_buf + len, "fsf_reqid", "0x%0Lx",
322 rec->fsf_reqid);
323 len += zfcp_dbf_view(out_buf + len, "fsf_seqno", "0x%08x",
324 rec->fsf_seqno);
325 len += zfcp_dbf_stck(out_buf + len, "fsf_issued", rec->fsf_issued);
326 len += zfcp_dbf_view(out_buf + len, "fsf_prot_status", "0x%08x",
327 rec->fsf_prot_status);
328 len += zfcp_dbf_view(out_buf + len, "fsf_status", "0x%08x",
329 rec->fsf_status);
330 len += zfcp_dbf_view_dump(out_buf + len, "fsf_prot_status_qual",
331 rec->fsf_prot_status_qual,
332 FSF_PROT_STATUS_QUAL_SIZE,
333 0, FSF_PROT_STATUS_QUAL_SIZE);
334 len += zfcp_dbf_view_dump(out_buf + len, "fsf_status_qual",
335 rec->fsf_status_qual,
336 FSF_STATUS_QUALIFIER_SIZE,
337 0, FSF_STATUS_QUALIFIER_SIZE);
338 len += zfcp_dbf_view(out_buf + len, "fsf_req_status", "0x%08x",
339 rec->fsf_req_status);
340 len += zfcp_dbf_view(out_buf + len, "sbal_first", "0x%02x",
341 rec->sbal_first);
342 len += zfcp_dbf_view(out_buf + len, "sbal_curr", "0x%02x",
343 rec->sbal_curr);
344 len += zfcp_dbf_view(out_buf + len, "sbal_last", "0x%02x",
345 rec->sbal_last);
346 len += zfcp_dbf_view(out_buf + len, "pool", "0x%02x", rec->pool);
347
348 switch (rec->fsf_command) {
349 case FSF_QTCB_FCP_CMND:
350 if (rec->fsf_req_status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
351 break;
352 len += zfcp_dbf_view(out_buf + len, "scsi_cmnd", "0x%0Lx",
353 rec->data.send_fcp.scsi_cmnd);
354 len += zfcp_dbf_view(out_buf + len, "scsi_serial", "0x%016Lx",
355 rec->data.send_fcp.scsi_serial);
356 break;
357
358 case FSF_QTCB_OPEN_PORT_WITH_DID:
359 case FSF_QTCB_CLOSE_PORT:
360 case FSF_QTCB_CLOSE_PHYSICAL_PORT:
361 len += zfcp_dbf_view(out_buf + len, "wwpn", "0x%016Lx",
362 rec->data.port.wwpn);
363 len += zfcp_dbf_view(out_buf + len, "d_id", "0x%06x",
364 rec->data.port.d_id);
365 len += zfcp_dbf_view(out_buf + len, "port_handle", "0x%08x",
366 rec->data.port.port_handle);
367 break;
368
369 case FSF_QTCB_OPEN_LUN:
370 case FSF_QTCB_CLOSE_LUN:
371 len += zfcp_dbf_view(out_buf + len, "wwpn", "0x%016Lx",
372 rec->data.unit.wwpn);
373 len += zfcp_dbf_view(out_buf + len, "fcp_lun", "0x%016Lx",
374 rec->data.unit.fcp_lun);
375 len += zfcp_dbf_view(out_buf + len, "port_handle", "0x%08x",
376 rec->data.unit.port_handle);
377 len += zfcp_dbf_view(out_buf + len, "lun_handle", "0x%08x",
378 rec->data.unit.lun_handle);
379 break;
380
381 case FSF_QTCB_SEND_ELS:
382 len += zfcp_dbf_view(out_buf + len, "d_id", "0x%06x",
383 rec->data.send_els.d_id);
384 len += zfcp_dbf_view(out_buf + len, "ls_code", "0x%02x",
385 rec->data.send_els.ls_code);
386 break;
387
388 case FSF_QTCB_ABORT_FCP_CMND:
389 case FSF_QTCB_SEND_GENERIC:
390 case FSF_QTCB_EXCHANGE_CONFIG_DATA:
391 case FSF_QTCB_EXCHANGE_PORT_DATA:
392 case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
393 case FSF_QTCB_UPLOAD_CONTROL_FILE:
394 break;
395 }
396
397 return len;
398 }
399
400 static int
401 zfcp_hba_dbf_view_status(char *out_buf, struct zfcp_hba_dbf_record_status *rec)
402 {
403 int len = 0;
404
405 len += zfcp_dbf_view(out_buf + len, "failed", "0x%02x", rec->failed);
406 len += zfcp_dbf_view(out_buf + len, "status_type", "0x%08x",
407 rec->status_type);
408 len += zfcp_dbf_view(out_buf + len, "status_subtype", "0x%08x",
409 rec->status_subtype);
410 len += zfcp_dbf_view_dump(out_buf + len, "queue_designator",
411 (char *)&rec->queue_designator,
412 sizeof(struct fsf_queue_designator),
413 0, sizeof(struct fsf_queue_designator));
414 len += zfcp_dbf_view_dump(out_buf + len, "payload",
415 (char *)&rec->payload,
416 rec->payload_size, 0, rec->payload_size);
417
418 return len;
419 }
420
421 static int
422 zfcp_hba_dbf_view_qdio(char *out_buf, struct zfcp_hba_dbf_record_qdio *rec)
423 {
424 int len = 0;
425
426 len += zfcp_dbf_view(out_buf + len, "status", "0x%08x", rec->status);
427 len += zfcp_dbf_view(out_buf + len, "qdio_error", "0x%08x",
428 rec->qdio_error);
429 len += zfcp_dbf_view(out_buf + len, "siga_error", "0x%08x",
430 rec->siga_error);
431 len += zfcp_dbf_view(out_buf + len, "sbal_index", "0x%02x",
432 rec->sbal_index);
433 len += zfcp_dbf_view(out_buf + len, "sbal_count", "0x%02x",
434 rec->sbal_count);
435
436 return len;
437 }
438
439 static int
440 zfcp_hba_dbf_view_format(debug_info_t * id, struct debug_view *view,
441 char *out_buf, const char *in_buf)
442 {
443 struct zfcp_hba_dbf_record *rec = (struct zfcp_hba_dbf_record *)in_buf;
444 int len = 0;
445
446 if (strncmp(rec->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
447 return 0;
448
449 len += zfcp_dbf_tag(out_buf + len, "tag", rec->tag);
450 if (isalpha(rec->tag2[0]))
451 len += zfcp_dbf_tag(out_buf + len, "tag2", rec->tag2);
452 if (strncmp(rec->tag, "resp", ZFCP_DBF_TAG_SIZE) == 0)
453 len += zfcp_hba_dbf_view_response(out_buf + len,
454 &rec->type.response);
455 else if (strncmp(rec->tag, "stat", ZFCP_DBF_TAG_SIZE) == 0)
456 len += zfcp_hba_dbf_view_status(out_buf + len,
457 &rec->type.status);
458 else if (strncmp(rec->tag, "qdio", ZFCP_DBF_TAG_SIZE) == 0)
459 len += zfcp_hba_dbf_view_qdio(out_buf + len, &rec->type.qdio);
460
461 len += sprintf(out_buf + len, "\n");
462
463 return len;
464 }
465
466 static struct debug_view zfcp_hba_dbf_view = {
467 "structured",
468 NULL,
469 &zfcp_dbf_view_header,
470 &zfcp_hba_dbf_view_format,
471 NULL,
472 NULL
473 };
474
475 static void
476 _zfcp_san_dbf_event_common_ct(const char *tag, struct zfcp_fsf_req *fsf_req,
477 u32 s_id, u32 d_id, void *buffer, int buflen)
478 {
479 struct zfcp_send_ct *send_ct = (struct zfcp_send_ct *)fsf_req->data;
480 struct zfcp_port *port = send_ct->port;
481 struct zfcp_adapter *adapter = port->adapter;
482 struct ct_hdr *header = (struct ct_hdr *)buffer;
483 struct zfcp_san_dbf_record *rec = &adapter->san_dbf_buf;
484 struct zfcp_san_dbf_record_ct *ct = &rec->type.ct;
485 unsigned long flags;
486
487 spin_lock_irqsave(&adapter->san_dbf_lock, flags);
488 memset(rec, 0, sizeof(struct zfcp_san_dbf_record));
489 strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
490 rec->fsf_reqid = (unsigned long)fsf_req;
491 rec->fsf_seqno = fsf_req->seq_no;
492 rec->s_id = s_id;
493 rec->d_id = d_id;
494 if (strncmp(tag, "octc", ZFCP_DBF_TAG_SIZE) == 0) {
495 ct->type.request.cmd_req_code = header->cmd_rsp_code;
496 ct->type.request.revision = header->revision;
497 ct->type.request.gs_type = header->gs_type;
498 ct->type.request.gs_subtype = header->gs_subtype;
499 ct->type.request.options = header->options;
500 ct->type.request.max_res_size = header->max_res_size;
501 } else if (strncmp(tag, "rctc", ZFCP_DBF_TAG_SIZE) == 0) {
502 ct->type.response.cmd_rsp_code = header->cmd_rsp_code;
503 ct->type.response.revision = header->revision;
504 ct->type.response.reason_code = header->reason_code;
505 ct->type.response.reason_code_expl = header->reason_code_expl;
506 ct->type.response.vendor_unique = header->vendor_unique;
507 }
508 ct->payload_size =
509 min(buflen - (int)sizeof(struct ct_hdr), ZFCP_DBF_CT_PAYLOAD);
510 memcpy(ct->payload, buffer + sizeof(struct ct_hdr), ct->payload_size);
511 debug_event(adapter->san_dbf, 3,
512 rec, sizeof(struct zfcp_san_dbf_record));
513 spin_unlock_irqrestore(&adapter->san_dbf_lock, flags);
514 }
515
516 void zfcp_san_dbf_event_ct_request(struct zfcp_fsf_req *fsf_req)
517 {
518 struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data;
519 struct zfcp_port *port = ct->port;
520 struct zfcp_adapter *adapter = port->adapter;
521
522 _zfcp_san_dbf_event_common_ct("octc", fsf_req,
523 fc_host_port_id(adapter->scsi_host),
524 port->d_id, zfcp_sg_to_address(ct->req),
525 ct->req->length);
526 }
527
528 void zfcp_san_dbf_event_ct_response(struct zfcp_fsf_req *fsf_req)
529 {
530 struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data;
531 struct zfcp_port *port = ct->port;
532 struct zfcp_adapter *adapter = port->adapter;
533
534 _zfcp_san_dbf_event_common_ct("rctc", fsf_req, port->d_id,
535 fc_host_port_id(adapter->scsi_host),
536 zfcp_sg_to_address(ct->resp),
537 ct->resp->length);
538 }
539
540 static void
541 _zfcp_san_dbf_event_common_els(const char *tag, int level,
542 struct zfcp_fsf_req *fsf_req, u32 s_id,
543 u32 d_id, u8 ls_code, void *buffer, int buflen)
544 {
545 struct zfcp_adapter *adapter = fsf_req->adapter;
546 struct zfcp_san_dbf_record *rec = &adapter->san_dbf_buf;
547 struct zfcp_dbf_dump *dump = (struct zfcp_dbf_dump *)rec;
548 unsigned long flags;
549 int offset = 0;
550
551 spin_lock_irqsave(&adapter->san_dbf_lock, flags);
552 do {
553 memset(rec, 0, sizeof(struct zfcp_san_dbf_record));
554 if (offset == 0) {
555 strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
556 rec->fsf_reqid = (unsigned long)fsf_req;
557 rec->fsf_seqno = fsf_req->seq_no;
558 rec->s_id = s_id;
559 rec->d_id = d_id;
560 rec->type.els.ls_code = ls_code;
561 buflen = min(buflen, ZFCP_DBF_ELS_MAX_PAYLOAD);
562 rec->type.els.payload_size = buflen;
563 memcpy(rec->type.els.payload,
564 buffer, min(buflen, ZFCP_DBF_ELS_PAYLOAD));
565 offset += min(buflen, ZFCP_DBF_ELS_PAYLOAD);
566 } else {
567 strncpy(dump->tag, "dump", ZFCP_DBF_TAG_SIZE);
568 dump->total_size = buflen;
569 dump->offset = offset;
570 dump->size = min(buflen - offset,
571 (int)sizeof(struct zfcp_san_dbf_record)
572 - (int)sizeof(struct zfcp_dbf_dump));
573 memcpy(dump->data, buffer + offset, dump->size);
574 offset += dump->size;
575 }
576 debug_event(adapter->san_dbf, level,
577 rec, sizeof(struct zfcp_san_dbf_record));
578 } while (offset < buflen);
579 spin_unlock_irqrestore(&adapter->san_dbf_lock, flags);
580 }
581
582 void zfcp_san_dbf_event_els_request(struct zfcp_fsf_req *fsf_req)
583 {
584 struct zfcp_send_els *els = (struct zfcp_send_els *)fsf_req->data;
585
586 _zfcp_san_dbf_event_common_els("oels", 2, fsf_req,
587 fc_host_port_id(els->adapter->scsi_host),
588 els->d_id,
589 *(u8 *) zfcp_sg_to_address(els->req),
590 zfcp_sg_to_address(els->req),
591 els->req->length);
592 }
593
594 void zfcp_san_dbf_event_els_response(struct zfcp_fsf_req *fsf_req)
595 {
596 struct zfcp_send_els *els = (struct zfcp_send_els *)fsf_req->data;
597
598 _zfcp_san_dbf_event_common_els("rels", 2, fsf_req, els->d_id,
599 fc_host_port_id(els->adapter->scsi_host),
600 *(u8 *) zfcp_sg_to_address(els->req),
601 zfcp_sg_to_address(els->resp),
602 els->resp->length);
603 }
604
605 void zfcp_san_dbf_event_incoming_els(struct zfcp_fsf_req *fsf_req)
606 {
607 struct zfcp_adapter *adapter = fsf_req->adapter;
608 struct fsf_status_read_buffer *status_buffer =
609 (struct fsf_status_read_buffer *)fsf_req->data;
610 int length = (int)status_buffer->length -
611 (int)((void *)&status_buffer->payload - (void *)status_buffer);
612
613 _zfcp_san_dbf_event_common_els("iels", 1, fsf_req, status_buffer->d_id,
614 fc_host_port_id(adapter->scsi_host),
615 *(u8 *) status_buffer->payload,
616 (void *)status_buffer->payload, length);
617 }
618
619 static int
620 zfcp_san_dbf_view_format(debug_info_t * id, struct debug_view *view,
621 char *out_buf, const char *in_buf)
622 {
623 struct zfcp_san_dbf_record *rec = (struct zfcp_san_dbf_record *)in_buf;
624 char *buffer = NULL;
625 int buflen = 0, total = 0;
626 int len = 0;
627
628 if (strncmp(rec->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
629 return 0;
630
631 len += zfcp_dbf_tag(out_buf + len, "tag", rec->tag);
632 len += zfcp_dbf_view(out_buf + len, "fsf_reqid", "0x%0Lx",
633 rec->fsf_reqid);
634 len += zfcp_dbf_view(out_buf + len, "fsf_seqno", "0x%08x",
635 rec->fsf_seqno);
636 len += zfcp_dbf_view(out_buf + len, "s_id", "0x%06x", rec->s_id);
637 len += zfcp_dbf_view(out_buf + len, "d_id", "0x%06x", rec->d_id);
638
639 if (strncmp(rec->tag, "octc", ZFCP_DBF_TAG_SIZE) == 0) {
640 len += zfcp_dbf_view(out_buf + len, "cmd_req_code", "0x%04x",
641 rec->type.ct.type.request.cmd_req_code);
642 len += zfcp_dbf_view(out_buf + len, "revision", "0x%02x",
643 rec->type.ct.type.request.revision);
644 len += zfcp_dbf_view(out_buf + len, "gs_type", "0x%02x",
645 rec->type.ct.type.request.gs_type);
646 len += zfcp_dbf_view(out_buf + len, "gs_subtype", "0x%02x",
647 rec->type.ct.type.request.gs_subtype);
648 len += zfcp_dbf_view(out_buf + len, "options", "0x%02x",
649 rec->type.ct.type.request.options);
650 len += zfcp_dbf_view(out_buf + len, "max_res_size", "0x%04x",
651 rec->type.ct.type.request.max_res_size);
652 total = rec->type.ct.payload_size;
653 buffer = rec->type.ct.payload;
654 buflen = min(total, ZFCP_DBF_CT_PAYLOAD);
655 } else if (strncmp(rec->tag, "rctc", ZFCP_DBF_TAG_SIZE) == 0) {
656 len += zfcp_dbf_view(out_buf + len, "cmd_rsp_code", "0x%04x",
657 rec->type.ct.type.response.cmd_rsp_code);
658 len += zfcp_dbf_view(out_buf + len, "revision", "0x%02x",
659 rec->type.ct.type.response.revision);
660 len += zfcp_dbf_view(out_buf + len, "reason_code", "0x%02x",
661 rec->type.ct.type.response.reason_code);
662 len +=
663 zfcp_dbf_view(out_buf + len, "reason_code_expl", "0x%02x",
664 rec->type.ct.type.response.reason_code_expl);
665 len +=
666 zfcp_dbf_view(out_buf + len, "vendor_unique", "0x%02x",
667 rec->type.ct.type.response.vendor_unique);
668 total = rec->type.ct.payload_size;
669 buffer = rec->type.ct.payload;
670 buflen = min(total, ZFCP_DBF_CT_PAYLOAD);
671 } else if (strncmp(rec->tag, "oels", ZFCP_DBF_TAG_SIZE) == 0 ||
672 strncmp(rec->tag, "rels", ZFCP_DBF_TAG_SIZE) == 0 ||
673 strncmp(rec->tag, "iels", ZFCP_DBF_TAG_SIZE) == 0) {
674 len += zfcp_dbf_view(out_buf + len, "ls_code", "0x%02x",
675 rec->type.els.ls_code);
676 total = rec->type.els.payload_size;
677 buffer = rec->type.els.payload;
678 buflen = min(total, ZFCP_DBF_ELS_PAYLOAD);
679 }
680
681 len += zfcp_dbf_view_dump(out_buf + len, "payload",
682 buffer, buflen, 0, total);
683
684 if (buflen == total)
685 len += sprintf(out_buf + len, "\n");
686
687 return len;
688 }
689
690 static struct debug_view zfcp_san_dbf_view = {
691 "structured",
692 NULL,
693 &zfcp_dbf_view_header,
694 &zfcp_san_dbf_view_format,
695 NULL,
696 NULL
697 };
698
699 static void
700 _zfcp_scsi_dbf_event_common(const char *tag, const char *tag2, int level,
701 struct zfcp_adapter *adapter,
702 struct scsi_cmnd *scsi_cmnd,
703 struct zfcp_fsf_req *fsf_req,
704 unsigned long old_req_id)
705 {
706 struct zfcp_scsi_dbf_record *rec = &adapter->scsi_dbf_buf;
707 struct zfcp_dbf_dump *dump = (struct zfcp_dbf_dump *)rec;
708 unsigned long flags;
709 struct fcp_rsp_iu *fcp_rsp;
710 char *fcp_rsp_info = NULL, *fcp_sns_info = NULL;
711 int offset = 0, buflen = 0;
712
713 spin_lock_irqsave(&adapter->scsi_dbf_lock, flags);
714 do {
715 memset(rec, 0, sizeof(struct zfcp_scsi_dbf_record));
716 if (offset == 0) {
717 strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
718 strncpy(rec->tag2, tag2, ZFCP_DBF_TAG_SIZE);
719 if (scsi_cmnd != NULL) {
720 if (scsi_cmnd->device) {
721 rec->scsi_id = scsi_cmnd->device->id;
722 rec->scsi_lun = scsi_cmnd->device->lun;
723 }
724 rec->scsi_result = scsi_cmnd->result;
725 rec->scsi_cmnd = (unsigned long)scsi_cmnd;
726 rec->scsi_serial = scsi_cmnd->serial_number;
727 memcpy(rec->scsi_opcode, &scsi_cmnd->cmnd,
728 min((int)scsi_cmnd->cmd_len,
729 ZFCP_DBF_SCSI_OPCODE));
730 rec->scsi_retries = scsi_cmnd->retries;
731 rec->scsi_allowed = scsi_cmnd->allowed;
732 }
733 if (fsf_req != NULL) {
734 fcp_rsp = (struct fcp_rsp_iu *)
735 &(fsf_req->qtcb->bottom.io.fcp_rsp);
736 fcp_rsp_info =
737 zfcp_get_fcp_rsp_info_ptr(fcp_rsp);
738 fcp_sns_info =
739 zfcp_get_fcp_sns_info_ptr(fcp_rsp);
740
741 rec->type.fcp.rsp_validity =
742 fcp_rsp->validity.value;
743 rec->type.fcp.rsp_scsi_status =
744 fcp_rsp->scsi_status;
745 rec->type.fcp.rsp_resid = fcp_rsp->fcp_resid;
746 if (fcp_rsp->validity.bits.fcp_rsp_len_valid)
747 rec->type.fcp.rsp_code =
748 *(fcp_rsp_info + 3);
749 if (fcp_rsp->validity.bits.fcp_sns_len_valid) {
750 buflen = min((int)fcp_rsp->fcp_sns_len,
751 ZFCP_DBF_SCSI_MAX_FCP_SNS_INFO);
752 rec->type.fcp.sns_info_len = buflen;
753 memcpy(rec->type.fcp.sns_info,
754 fcp_sns_info,
755 min(buflen,
756 ZFCP_DBF_SCSI_FCP_SNS_INFO));
757 offset += min(buflen,
758 ZFCP_DBF_SCSI_FCP_SNS_INFO);
759 }
760
761 rec->fsf_reqid = (unsigned long)fsf_req;
762 rec->fsf_seqno = fsf_req->seq_no;
763 rec->fsf_issued = fsf_req->issued;
764 }
765 rec->type.old_fsf_reqid = old_req_id;
766 } else {
767 strncpy(dump->tag, "dump", ZFCP_DBF_TAG_SIZE);
768 dump->total_size = buflen;
769 dump->offset = offset;
770 dump->size = min(buflen - offset,
771 (int)sizeof(struct
772 zfcp_scsi_dbf_record) -
773 (int)sizeof(struct zfcp_dbf_dump));
774 memcpy(dump->data, fcp_sns_info + offset, dump->size);
775 offset += dump->size;
776 }
777 debug_event(adapter->scsi_dbf, level,
778 rec, sizeof(struct zfcp_scsi_dbf_record));
779 } while (offset < buflen);
780 spin_unlock_irqrestore(&adapter->scsi_dbf_lock, flags);
781 }
782
783 void
784 zfcp_scsi_dbf_event_result(const char *tag, int level,
785 struct zfcp_adapter *adapter,
786 struct scsi_cmnd *scsi_cmnd,
787 struct zfcp_fsf_req *fsf_req)
788 {
789 _zfcp_scsi_dbf_event_common("rslt", tag, level,
790 adapter, scsi_cmnd, fsf_req, 0);
791 }
792
793 void
794 zfcp_scsi_dbf_event_abort(const char *tag, struct zfcp_adapter *adapter,
795 struct scsi_cmnd *scsi_cmnd,
796 struct zfcp_fsf_req *new_fsf_req,
797 unsigned long old_req_id)
798 {
799 _zfcp_scsi_dbf_event_common("abrt", tag, 1,
800 adapter, scsi_cmnd, new_fsf_req, old_req_id);
801 }
802
803 void
804 zfcp_scsi_dbf_event_devreset(const char *tag, u8 flag, struct zfcp_unit *unit,
805 struct scsi_cmnd *scsi_cmnd)
806 {
807 struct zfcp_adapter *adapter = unit->port->adapter;
808
809 _zfcp_scsi_dbf_event_common(flag == FCP_TARGET_RESET ? "trst" : "lrst",
810 tag, 1, adapter, scsi_cmnd, NULL, 0);
811 }
812
813 static int
814 zfcp_scsi_dbf_view_format(debug_info_t * id, struct debug_view *view,
815 char *out_buf, const char *in_buf)
816 {
817 struct zfcp_scsi_dbf_record *rec =
818 (struct zfcp_scsi_dbf_record *)in_buf;
819 int len = 0;
820
821 if (strncmp(rec->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
822 return 0;
823
824 len += zfcp_dbf_tag(out_buf + len, "tag", rec->tag);
825 len += zfcp_dbf_tag(out_buf + len, "tag2", rec->tag2);
826 len += zfcp_dbf_view(out_buf + len, "scsi_id", "0x%08x", rec->scsi_id);
827 len += zfcp_dbf_view(out_buf + len, "scsi_lun", "0x%08x",
828 rec->scsi_lun);
829 len += zfcp_dbf_view(out_buf + len, "scsi_result", "0x%08x",
830 rec->scsi_result);
831 len += zfcp_dbf_view(out_buf + len, "scsi_cmnd", "0x%0Lx",
832 rec->scsi_cmnd);
833 len += zfcp_dbf_view(out_buf + len, "scsi_serial", "0x%016Lx",
834 rec->scsi_serial);
835 len += zfcp_dbf_view_dump(out_buf + len, "scsi_opcode",
836 rec->scsi_opcode,
837 ZFCP_DBF_SCSI_OPCODE,
838 0, ZFCP_DBF_SCSI_OPCODE);
839 len += zfcp_dbf_view(out_buf + len, "scsi_retries", "0x%02x",
840 rec->scsi_retries);
841 len += zfcp_dbf_view(out_buf + len, "scsi_allowed", "0x%02x",
842 rec->scsi_allowed);
843 if (strncmp(rec->tag, "abrt", ZFCP_DBF_TAG_SIZE) == 0) {
844 len += zfcp_dbf_view(out_buf + len, "old_fsf_reqid", "0x%0Lx",
845 rec->type.old_fsf_reqid);
846 }
847 len += zfcp_dbf_view(out_buf + len, "fsf_reqid", "0x%0Lx",
848 rec->fsf_reqid);
849 len += zfcp_dbf_view(out_buf + len, "fsf_seqno", "0x%08x",
850 rec->fsf_seqno);
851 len += zfcp_dbf_stck(out_buf + len, "fsf_issued", rec->fsf_issued);
852 if (strncmp(rec->tag, "rslt", ZFCP_DBF_TAG_SIZE) == 0) {
853 len +=
854 zfcp_dbf_view(out_buf + len, "fcp_rsp_validity", "0x%02x",
855 rec->type.fcp.rsp_validity);
856 len +=
857 zfcp_dbf_view(out_buf + len, "fcp_rsp_scsi_status",
858 "0x%02x", rec->type.fcp.rsp_scsi_status);
859 len +=
860 zfcp_dbf_view(out_buf + len, "fcp_rsp_resid", "0x%08x",
861 rec->type.fcp.rsp_resid);
862 len +=
863 zfcp_dbf_view(out_buf + len, "fcp_rsp_code", "0x%08x",
864 rec->type.fcp.rsp_code);
865 len +=
866 zfcp_dbf_view(out_buf + len, "fcp_sns_info_len", "0x%08x",
867 rec->type.fcp.sns_info_len);
868 len +=
869 zfcp_dbf_view_dump(out_buf + len, "fcp_sns_info",
870 rec->type.fcp.sns_info,
871 min((int)rec->type.fcp.sns_info_len,
872 ZFCP_DBF_SCSI_FCP_SNS_INFO), 0,
873 rec->type.fcp.sns_info_len);
874 }
875
876 len += sprintf(out_buf + len, "\n");
877
878 return len;
879 }
880
881 static struct debug_view zfcp_scsi_dbf_view = {
882 "structured",
883 NULL,
884 &zfcp_dbf_view_header,
885 &zfcp_scsi_dbf_view_format,
886 NULL,
887 NULL
888 };
889
890 /**
891 * zfcp_adapter_debug_register - registers debug feature for an adapter
892 * @adapter: pointer to adapter for which debug features should be registered
893 * return: -ENOMEM on error, 0 otherwise
894 */
895 int zfcp_adapter_debug_register(struct zfcp_adapter *adapter)
896 {
897 char dbf_name[DEBUG_MAX_NAME_LEN];
898
899 /* debug feature area which records recovery activity */
900 sprintf(dbf_name, "zfcp_%s_erp", zfcp_get_busid_by_adapter(adapter));
901 adapter->erp_dbf = debug_register(dbf_name, dbfsize, 2,
902 sizeof(struct zfcp_erp_dbf_record));
903 if (!adapter->erp_dbf)
904 goto failed;
905 debug_register_view(adapter->erp_dbf, &debug_hex_ascii_view);
906 debug_set_level(adapter->erp_dbf, 3);
907
908 /* debug feature area which records HBA (FSF and QDIO) conditions */
909 sprintf(dbf_name, "zfcp_%s_hba", zfcp_get_busid_by_adapter(adapter));
910 adapter->hba_dbf = debug_register(dbf_name, dbfsize, 1,
911 sizeof(struct zfcp_hba_dbf_record));
912 if (!adapter->hba_dbf)
913 goto failed;
914 debug_register_view(adapter->hba_dbf, &debug_hex_ascii_view);
915 debug_register_view(adapter->hba_dbf, &zfcp_hba_dbf_view);
916 debug_set_level(adapter->hba_dbf, 3);
917
918 /* debug feature area which records SAN command failures and recovery */
919 sprintf(dbf_name, "zfcp_%s_san", zfcp_get_busid_by_adapter(adapter));
920 adapter->san_dbf = debug_register(dbf_name, dbfsize, 1,
921 sizeof(struct zfcp_san_dbf_record));
922 if (!adapter->san_dbf)
923 goto failed;
924 debug_register_view(adapter->san_dbf, &debug_hex_ascii_view);
925 debug_register_view(adapter->san_dbf, &zfcp_san_dbf_view);
926 debug_set_level(adapter->san_dbf, 6);
927
928 /* debug feature area which records SCSI command failures and recovery */
929 sprintf(dbf_name, "zfcp_%s_scsi", zfcp_get_busid_by_adapter(adapter));
930 adapter->scsi_dbf = debug_register(dbf_name, dbfsize, 1,
931 sizeof(struct zfcp_scsi_dbf_record));
932 if (!adapter->scsi_dbf)
933 goto failed;
934 debug_register_view(adapter->scsi_dbf, &debug_hex_ascii_view);
935 debug_register_view(adapter->scsi_dbf, &zfcp_scsi_dbf_view);
936 debug_set_level(adapter->scsi_dbf, 3);
937
938 return 0;
939
940 failed:
941 zfcp_adapter_debug_unregister(adapter);
942
943 return -ENOMEM;
944 }
945
946 /**
947 * zfcp_adapter_debug_unregister - unregisters debug feature for an adapter
948 * @adapter: pointer to adapter for which debug features should be unregistered
949 */
950 void zfcp_adapter_debug_unregister(struct zfcp_adapter *adapter)
951 {
952 debug_unregister(adapter->scsi_dbf);
953 debug_unregister(adapter->san_dbf);
954 debug_unregister(adapter->hba_dbf);
955 debug_unregister(adapter->erp_dbf);
956 adapter->scsi_dbf = NULL;
957 adapter->san_dbf = NULL;
958 adapter->hba_dbf = NULL;
959 adapter->erp_dbf = NULL;
960 }
961
962 #undef ZFCP_LOG_AREA
kernel source for telekom puls (alcatel/mediatek)