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[SCSI] zfcp: Move debug data from zfcp_data to own data structure
[deliverable/linux.git] / drivers / s390 / scsi / zfcp_dbf.c
CommitLineData
8a36e453 1/*
553448f6 2 * zfcp device driver
8a36e453 3 *
553448f6 4 * Debug traces for zfcp.
8a36e453 5 *
d46f384a 6 * Copyright IBM Corporation 2002, 2009
8a36e453
MS		 7 */
8
ecf39d42
CS		 9#define KMSG_COMPONENT "zfcp"
10#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11
8a36e453 12#include <linux/ctype.h>
364c8558 13#include <asm/debug.h>
d46f384a 14#include "zfcp_dbf.h"
8a36e453
MS		 15#include "zfcp_ext.h"
16
17static u32 dbfsize = 4;
18
19module_param(dbfsize, uint, 0400);
20MODULE_PARM_DESC(dbfsize,
21 "number of pages for each debug feature area (default 4)");
22
c15450e3
MP		 23static 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);
d94ce6c6 37 debug_event(dbf, level, dump, dump->size + sizeof(*dump));
c15450e3
MP		 38 }
39}
40
8fc5af16
MP		 41/* FIXME: this duplicate this code in s390 debug feature */
42static void zfcp_dbf_timestamp(unsigned long long stck, struct timespec *time)
8a36e453
MS		 43{
44 unsigned long long sec;
8a36e453
MS		 45
46 stck -= 0x8126d60e46000000LL - (0x3c26700LL * 1000000 * 4096);
47 sec = stck >> 12;
48 do_div(sec, 1000000);
8fc5af16 49 time->tv_sec = sec;
8a36e453 50 stck -= (sec * 1000000) << 12;
8fc5af16 51 time->tv_nsec = ((stck * 1000) >> 12);
8a36e453
MS		 52}
53
a9c85775 54static void zfcp_dbf_tag(char **p, const char *label, const char *tag)
8a36e453 55{
a9c85775 56 int i;
8a36e453 57
a9c85775 58 *p += sprintf(*p, "%-24s", label);
8a36e453 59 for (i = 0; i < ZFCP_DBF_TAG_SIZE; i++)
a9c85775
MP		 60 *p += sprintf(*p, "%c", tag[i]);
61 *p += sprintf(*p, "\n");
8a36e453
MS		 62}
63
10223c60
MP		 64static void zfcp_dbf_outs(char **buf, const char *s1, const char *s2)
65{
66 *buf += sprintf(*buf, "%-24s%s\n", s1, s2);
67}
68
69static 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
df29f4ac
MP		 80static void zfcp_dbf_outd(char **p, const char *label, char *buffer,
81 int buflen, int offset, int total_size)
8a36e453 82{
df29f4ac
MP		 83 if (!offset)
84 *p += sprintf(*p, "%-24s ", label);
8a36e453
MS		 85 while (buflen--) {
86 if (offset > 0) {
87 if ((offset % 32) == 0)
df29f4ac 88 *p += sprintf(*p, "\n%-24c ", ' ');
8a36e453 89 else if ((offset % 4) == 0)
df29f4ac 90 *p += sprintf(*p, " ");
8a36e453 91 }
df29f4ac 92 *p += sprintf(*p, "%02x", *buffer++);
8a36e453 93 if (++offset == total_size) {
df29f4ac 94 *p += sprintf(*p, "\n");
8a36e453
MS		 95 break;
96 }
97 }
df29f4ac
MP		 98 if (!total_size)
99 *p += sprintf(*p, "\n");
8a36e453
MS		 100}
101
92c7a83f
MP		 102static int zfcp_dbf_view_header(debug_info_t *id, struct debug_view *view,
103 int area, debug_entry_t *entry, char *out_buf)
8a36e453
MS		 104{
105 struct zfcp_dbf_dump *dump = (struct zfcp_dbf_dump *)DEBUG_DATA(entry);
8fc5af16 106 struct timespec t;
b634fff7 107 char *p = out_buf;
8a36e453
MS		 108
109 if (strncmp(dump->tag, "dump", ZFCP_DBF_TAG_SIZE) != 0) {
8fc5af16 110 zfcp_dbf_timestamp(entry->id.stck, &t);
b634fff7
MP		 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 {
d94ce6c6 115 zfcp_dbf_outd(&p, "", dump->data, dump->size, dump->offset,
df29f4ac 116 dump->total_size);
8a36e453 117 if ((dump->offset + dump->size) == dump->total_size)
b634fff7 118 p += sprintf(p, "\n");
8a36e453 119 }
b634fff7 120 return p - out_buf;
8a36e453
MS		 121}
122
bfab1637
MP		 123/**
124 * zfcp_hba_dbf_event_fsf_response - trace event for request completion
125 * @fsf_req: request that has been completed
126 */
4d284cac 127void zfcp_hba_dbf_event_fsf_response(struct zfcp_fsf_req *fsf_req)
8a36e453
MS		 128{
129 struct zfcp_adapter *adapter = fsf_req->adapter;
d46f384a 130 struct zfcp_dbf *dbf = adapter->dbf;
8a36e453
MS		 131 struct fsf_qtcb *qtcb = fsf_req->qtcb;
132 union fsf_prot_status_qual *prot_status_qual =
92c7a83f 133 &qtcb->prefix.prot_status_qual;
8a36e453
MS		 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;
d46f384a 139 struct zfcp_hba_dbf_record *rec = &dbf->hba_dbf_buf;
6bc473dd 140 struct zfcp_hba_dbf_record_response *response = &rec->u.response;
8a36e453
MS		 141 int level;
142 unsigned long flags;
143
d46f384a 144 spin_lock_irqsave(&dbf->hba_dbf_lock, flags);
6bc473dd 145 memset(rec, 0, sizeof(*rec));
8a36e453
MS		 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;
b75db731
MP		 159 } else if (qtcb->header.log_length) {
160 strncpy(rec->tag2, "qtcb", ZFCP_DBF_TAG_SIZE);
161 level = 5;
8a36e453
MS		 162 } else {
163 strncpy(rec->tag2, "norm", ZFCP_DBF_TAG_SIZE);
164 level = 6;
165 }
166
167 response->fsf_command = fsf_req->fsf_command;
f0216ae9 168 response->fsf_reqid = fsf_req->req_id;
8a36e453
MS		 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;
e891bffe 179 response->sbal_last = fsf_req->sbal_last;
c3baa9a2 180 response->sbal_response = fsf_req->sbal_response;
8a36e453
MS		 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;
6bc473dd
MP		 189 if (scsi_cmnd) {
190 response->u.fcp.cmnd = (unsigned long)scsi_cmnd;
191 response->u.fcp.serial = scsi_cmnd->serial_number;
8a36e453
MS		 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;
6bc473dd
MP		 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;
8a36e453
MS		 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;
6bc473dd
MP		 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;
8a36e453
MS		 212 break;
213
214 case FSF_QTCB_SEND_ELS:
215 send_els = (struct zfcp_send_els *)fsf_req->data;
6bc473dd
MP		 216 response->u.els.d_id = qtcb->bottom.support.d_id;
217 response->u.els.ls_code = send_els->ls_code >> 24;
8a36e453
MS		 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
d46f384a 229 debug_event(dbf->hba_dbf, level, rec, sizeof(*rec));
b75db731
MP		 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--);
d46f384a
CS		 237 zfcp_dbf_hexdump(dbf->hba_dbf, rec, sizeof(*rec), level, buf,
238 len);
b75db731
MP		 239 }
240
d46f384a 241 spin_unlock_irqrestore(&dbf->hba_dbf_lock, flags);
8a36e453
MS		 242}
243
bfab1637
MP		 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 */
92c7a83f
MP		 250void zfcp_hba_dbf_event_fsf_unsol(const char *tag, struct zfcp_adapter *adapter,
251 struct fsf_status_read_buffer *status_buffer)
8a36e453 252{
d46f384a
CS		 253 struct zfcp_dbf *dbf = adapter->dbf;
254 struct zfcp_hba_dbf_record *rec = &dbf->hba_dbf_buf;
8a36e453
MS		 255 unsigned long flags;
256
d46f384a 257 spin_lock_irqsave(&dbf->hba_dbf_lock, flags);
6bc473dd 258 memset(rec, 0, sizeof(*rec));
8a36e453
MS		 259 strncpy(rec->tag, "stat", ZFCP_DBF_TAG_SIZE);
260 strncpy(rec->tag2, tag, ZFCP_DBF_TAG_SIZE);
261
d26ab06e 262 rec->u.status.failed = atomic_read(&adapter->stat_miss);
8a36e453 263 if (status_buffer != NULL) {
6bc473dd
MP		 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,
8a36e453
MS		 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:
6bc473dd 272 rec->u.status.payload_size =
8a36e453
MS		 273 ZFCP_DBF_UNSOL_PAYLOAD_SENSE_DATA_AVAIL;
274 break;
275
276 case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
6bc473dd 277 rec->u.status.payload_size =
8a36e453
MS		 278 ZFCP_DBF_UNSOL_PAYLOAD_BIT_ERROR_THRESHOLD;
279 break;
280
281 case FSF_STATUS_READ_LINK_DOWN:
aef4a983
MS		 282 switch (status_buffer->status_subtype) {
283 case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
284 case FSF_STATUS_READ_SUB_FDISC_FAILED:
6bc473dd 285 rec->u.status.payload_size =
aef4a983
MS		 286 sizeof(struct fsf_link_down_info);
287 }
8a36e453
MS		 288 break;
289
aef4a983 290 case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
6bc473dd 291 rec->u.status.payload_size =
aef4a983
MS		 292 ZFCP_DBF_UNSOL_PAYLOAD_FEATURE_UPDATE_ALERT;
293 break;
8a36e453 294 }
6bc473dd
MP		 295 memcpy(&rec->u.status.payload,
296 &status_buffer->payload, rec->u.status.payload_size);
8a36e453
MS		 297 }
298
d46f384a
CS		 299 debug_event(dbf->hba_dbf, 2, rec, sizeof(*rec));
300 spin_unlock_irqrestore(&dbf->hba_dbf_lock, flags);
8a36e453
MS		 301}
302
bfab1637
MP		 303/**
304 * zfcp_hba_dbf_event_qdio - trace event for QDIO related failure
305 * @adapter: adapter affected by this QDIO related event
bfab1637 306 * @qdio_error: as passed by qdio module
bfab1637
MP		 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 */
779e6e1c
JG		 310void zfcp_hba_dbf_event_qdio(struct zfcp_adapter *adapter,
311 unsigned int qdio_error, int sbal_index,
312 int sbal_count)
8a36e453 313{
d46f384a
CS		 314 struct zfcp_dbf *dbf = adapter->dbf;
315 struct zfcp_hba_dbf_record *r = &dbf->hba_dbf_buf;
8a36e453
MS		 316 unsigned long flags;
317
d46f384a 318 spin_lock_irqsave(&dbf->hba_dbf_lock, flags);
6bc473dd
MP		 319 memset(r, 0, sizeof(*r));
320 strncpy(r->tag, "qdio", ZFCP_DBF_TAG_SIZE);
6bc473dd 321 r->u.qdio.qdio_error = qdio_error;
6bc473dd
MP		 322 r->u.qdio.sbal_index = sbal_index;
323 r->u.qdio.sbal_count = sbal_count;
d46f384a
CS		 324 debug_event(dbf->hba_dbf, 0, r, sizeof(*r));
325 spin_unlock_irqrestore(&dbf->hba_dbf_lock, flags);
8a36e453
MS		 326}
327
57069386
SS		 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 */
333void zfcp_hba_dbf_event_berr(struct zfcp_adapter *adapter,
334 struct zfcp_fsf_req *req)
335{
d46f384a
CS		 336 struct zfcp_dbf *dbf = adapter->dbf;
337 struct zfcp_hba_dbf_record *r = &dbf->hba_dbf_buf;
57069386
SS		 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
d46f384a 342 spin_lock_irqsave(&dbf->hba_dbf_lock, flags);
57069386
SS		 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));
d46f384a
CS		 346 debug_event(dbf->hba_dbf, 0, r, sizeof(*r));
347 spin_unlock_irqrestore(&dbf->hba_dbf_lock, flags);
57069386 348}
a9c85775
MP		 349static void zfcp_hba_dbf_view_response(char **p,
350 struct zfcp_hba_dbf_record_response *r)
8a36e453 351{
8fc5af16 352 struct timespec t;
8a36e453 353
a9c85775
MP		 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);
b634fff7 357 zfcp_dbf_timestamp(r->fsf_issued, &t);
a9c85775
MP		 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,
df29f4ac 362 FSF_PROT_STATUS_QUAL_SIZE, 0, FSF_PROT_STATUS_QUAL_SIZE);
a9c85775 363 zfcp_dbf_outd(p, "fsf_status_qual", r->fsf_status_qual,
df29f4ac 364 FSF_STATUS_QUALIFIER_SIZE, 0, FSF_STATUS_QUALIFIER_SIZE);
a9c85775
MP		 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);
e891bffe 367 zfcp_dbf_out(p, "sbal_last", "0x%02x", r->sbal_last);
c3baa9a2 368 zfcp_dbf_out(p, "sbal_response", "0x%02x", r->sbal_response);
a9c85775 369 zfcp_dbf_out(p, "pool", "0x%02x", r->pool);
b634fff7
MP		 370
371 switch (r->fsf_command) {
8a36e453 372 case FSF_QTCB_FCP_CMND:
b634fff7 373 if (r->fsf_req_status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
8a36e453 374 break;
6bc473dd
MP		 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);
d94ce6c6 377 p += sprintf(*p, "\n");
8a36e453
MS		 378 break;
379
380 case FSF_QTCB_OPEN_PORT_WITH_DID:
381 case FSF_QTCB_CLOSE_PORT:
382 case FSF_QTCB_CLOSE_PHYSICAL_PORT:
6bc473dd
MP		 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);
8a36e453
MS		 386 break;
387
388 case FSF_QTCB_OPEN_LUN:
389 case FSF_QTCB_CLOSE_LUN:
6bc473dd
MP		 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);
8a36e453
MS		 394 break;
395
396 case FSF_QTCB_SEND_ELS:
6bc473dd
MP		 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);
8a36e453
MS		 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 }
8a36e453
MS		 409}
410
a9c85775
MP		 411static void zfcp_hba_dbf_view_status(char **p,
412 struct zfcp_hba_dbf_record_status *r)
8a36e453 413{
a9c85775
MP		 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,
df29f4ac
MP		 418 sizeof(struct fsf_queue_designator), 0,
419 sizeof(struct fsf_queue_designator));
a9c85775 420 zfcp_dbf_outd(p, "payload", (char *)&r->payload, r->payload_size, 0,
df29f4ac 421 r->payload_size);
8a36e453
MS		 422}
423
a9c85775 424static void zfcp_hba_dbf_view_qdio(char **p, struct zfcp_hba_dbf_record_qdio *r)
8a36e453 425{
a9c85775 426 zfcp_dbf_out(p, "qdio_error", "0x%08x", r->qdio_error);
a9c85775
MP		 427 zfcp_dbf_out(p, "sbal_index", "0x%02x", r->sbal_index);
428 zfcp_dbf_out(p, "sbal_count", "0x%02x", r->sbal_count);
8a36e453
MS		 429}
430
57069386
SS		 431static 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
a9c85775
MP		 455static int zfcp_hba_dbf_view_format(debug_info_t *id, struct debug_view *view,
456 char *out_buf, const char *in_buf)
8a36e453 457{
a9c85775
MP		 458 struct zfcp_hba_dbf_record *r = (struct zfcp_hba_dbf_record *)in_buf;
459 char *p = out_buf;
8a36e453 460
a9c85775 461 if (strncmp(r->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
8a36e453
MS		 462 return 0;
463
a9c85775
MP		 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)
6bc473dd 469 zfcp_hba_dbf_view_response(&p, &r->u.response);
a9c85775 470 else if (strncmp(r->tag, "stat", ZFCP_DBF_TAG_SIZE) == 0)
6bc473dd 471 zfcp_hba_dbf_view_status(&p, &r->u.status);
a9c85775 472 else if (strncmp(r->tag, "qdio", ZFCP_DBF_TAG_SIZE) == 0)
6bc473dd 473 zfcp_hba_dbf_view_qdio(&p, &r->u.qdio);
57069386
SS		 474 else if (strncmp(r->tag, "berr", ZFCP_DBF_TAG_SIZE) == 0)
475 zfcp_hba_dbf_view_berr(&p, &r->u.berr);
a9c85775 476
d94ce6c6
CS		 477 if (strncmp(r->tag, "resp", ZFCP_DBF_TAG_SIZE) != 0)
478 p += sprintf(p, "\n");
a9c85775 479 return p - out_buf;
8a36e453
MS		 480}
481
2b67fc46 482static struct debug_view zfcp_hba_dbf_view = {
8a36e453
MS		 483 "structured",
484 NULL,
485 &zfcp_dbf_view_header,
486 &zfcp_hba_dbf_view_format,
487 NULL,
488 NULL
489};
490
d79a83db 491static const char *zfcp_rec_dbf_tags[] = {
348447e8 492 [ZFCP_REC_DBF_ID_THREAD] = "thread",
698ec016 493 [ZFCP_REC_DBF_ID_TARGET] = "target",
9467a9b3 494 [ZFCP_REC_DBF_ID_TRIGGER] = "trigger",
6f4f365e 495 [ZFCP_REC_DBF_ID_ACTION] = "action",
d79a83db
MP		 496};
497
d79a83db
MP		 498static 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;
5ffd51a5 503 char hint[ZFCP_DBF_ID_SIZE + 1];
d79a83db 504
5ffd51a5
SS		 505 memcpy(hint, r->id2, ZFCP_DBF_ID_SIZE);
506 hint[ZFCP_DBF_ID_SIZE] = 0;
d79a83db 507 zfcp_dbf_outs(&p, "tag", zfcp_rec_dbf_tags[r->id]);
5ffd51a5 508 zfcp_dbf_outs(&p, "hint", hint);
d79a83db 509 switch (r->id) {
348447e8 510 case ZFCP_REC_DBF_ID_THREAD:
348447e8
MP		 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;
698ec016
MP		 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;
9467a9b3
MP		 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;
6f4f365e
MP		 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;
d79a83db 540 }
b634fff7
MP		 541 p += sprintf(p, "\n");
542 return p - buf;
d79a83db
MP		 543}
544
545static 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
348447e8
MP		 554/**
555 * zfcp_rec_dbf_event_thread - trace event related to recovery thread operation
556 * @id2: identifier for event
557 * @adapter: adapter
aa0fec62 558 * This function assumes that the caller is holding erp_lock.
348447e8 559 */
5ffd51a5 560void zfcp_rec_dbf_event_thread(char *id2, struct zfcp_adapter *adapter)
348447e8 561{
d46f384a
CS		 562 struct zfcp_dbf *dbf = adapter->dbf;
563 struct zfcp_rec_dbf_record *r = &dbf->rec_dbf_buf;
348447e8
MP		 564 unsigned long flags = 0;
565 struct list_head *entry;
566 unsigned ready = 0, running = 0, total;
567
348447e8
MP		 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;
348447e8 573
d46f384a 574 spin_lock_irqsave(&dbf->rec_dbf_lock, flags);
348447e8
MP		 575 memset(r, 0, sizeof(*r));
576 r->id = ZFCP_REC_DBF_ID_THREAD;
5ffd51a5 577 memcpy(r->id2, id2, ZFCP_DBF_ID_SIZE);
348447e8
MP		 578 r->u.thread.total = total;
579 r->u.thread.ready = ready;
580 r->u.thread.running = running;
d46f384a
CS		 581 debug_event(dbf->rec_dbf, 6, r, sizeof(*r));
582 spin_unlock_irqrestore(&dbf->rec_dbf_lock, flags);
348447e8
MP		 583}
584
aa0fec62
CS		 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 */
5ffd51a5 591void zfcp_rec_dbf_event_thread_lock(char *id2, struct zfcp_adapter *adapter)
aa0fec62
CS		 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
5ffd51a5 600static void zfcp_rec_dbf_event_target(char *id2, void *ref,
698ec016
MP		 601 struct zfcp_adapter *adapter,
602 atomic_t *status, atomic_t *erp_count,
603 u64 wwpn, u32 d_id, u64 fcp_lun)
604{
d46f384a
CS		 605 struct zfcp_dbf *dbf = adapter->dbf;
606 struct zfcp_rec_dbf_record *r = &dbf->rec_dbf_buf;
698ec016
MP		 607 unsigned long flags;
608
d46f384a 609 spin_lock_irqsave(&dbf->rec_dbf_lock, flags);
698ec016
MP		 610 memset(r, 0, sizeof(*r));
611 r->id = ZFCP_REC_DBF_ID_TARGET;
5ffd51a5 612 memcpy(r->id2, id2, ZFCP_DBF_ID_SIZE);
1f6f7129 613 r->u.target.ref = (unsigned long)ref;
698ec016
MP		 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);
d46f384a
CS		 619 debug_event(dbf->rec_dbf, 3, r, sizeof(*r));
620 spin_unlock_irqrestore(&dbf->rec_dbf_lock, flags);
698ec016
MP		 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 */
5ffd51a5
SS		 629void zfcp_rec_dbf_event_adapter(char *id, void *ref,
630 struct zfcp_adapter *adapter)
698ec016
MP		 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 */
5ffd51a5 642void zfcp_rec_dbf_event_port(char *id, void *ref, struct zfcp_port *port)
698ec016
MP		 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 */
5ffd51a5 657void zfcp_rec_dbf_event_unit(char *id, void *ref, struct zfcp_unit *unit)
698ec016
MP		 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
9467a9b3
MP		 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 */
5ffd51a5 678void zfcp_rec_dbf_event_trigger(char *id2, void *ref, u8 want, u8 need,
1f6f7129 679 void *action, struct zfcp_adapter *adapter,
9467a9b3
MP		 680 struct zfcp_port *port, struct zfcp_unit *unit)
681{
d46f384a
CS		 682 struct zfcp_dbf *dbf = adapter->dbf;
683 struct zfcp_rec_dbf_record *r = &dbf->rec_dbf_buf;
9467a9b3
MP		 684 unsigned long flags;
685
d46f384a 686 spin_lock_irqsave(&dbf->rec_dbf_lock, flags);
9467a9b3
MP		 687 memset(r, 0, sizeof(*r));
688 r->id = ZFCP_REC_DBF_ID_TRIGGER;
5ffd51a5 689 memcpy(r->id2, id2, ZFCP_DBF_ID_SIZE);
1f6f7129 690 r->u.trigger.ref = (unsigned long)ref;
9467a9b3
MP		 691 r->u.trigger.want = want;
692 r->u.trigger.need = need;
1f6f7129 693 r->u.trigger.action = (unsigned long)action;
9467a9b3
MP		 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 }
d46f384a
CS		 703 debug_event(dbf->rec_dbf, action ? 1 : 4, r, sizeof(*r));
704 spin_unlock_irqrestore(&dbf->rec_dbf_lock, flags);
9467a9b3
MP		 705}
706
6f4f365e
MP		 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 */
5ffd51a5 712void zfcp_rec_dbf_event_action(char *id2, struct zfcp_erp_action *erp_action)
6f4f365e
MP		 713{
714 struct zfcp_adapter *adapter = erp_action->adapter;
d46f384a
CS		 715 struct zfcp_dbf *dbf = adapter->dbf;
716 struct zfcp_rec_dbf_record *r = &dbf->rec_dbf_buf;
6f4f365e
MP		 717 unsigned long flags;
718
d46f384a 719 spin_lock_irqsave(&dbf->rec_dbf_lock, flags);
6f4f365e
MP		 720 memset(r, 0, sizeof(*r));
721 r->id = ZFCP_REC_DBF_ID_ACTION;
5ffd51a5 722 memcpy(r->id2, id2, ZFCP_DBF_ID_SIZE);
1f6f7129 723 r->u.action.action = (unsigned long)erp_action;
6f4f365e
MP		 724 r->u.action.status = erp_action->status;
725 r->u.action.step = erp_action->step;
1f6f7129 726 r->u.action.fsf_req = (unsigned long)erp_action->fsf_req;
d46f384a
CS		 727 debug_event(dbf->rec_dbf, 5, r, sizeof(*r));
728 spin_unlock_irqrestore(&dbf->rec_dbf_lock, flags);
6f4f365e
MP		 729}
730
bfab1637
MP		 731/**
732 * zfcp_san_dbf_event_ct_request - trace event for issued CT request
733 * @fsf_req: request containing issued CT data
734 */
4d284cac 735void zfcp_san_dbf_event_ct_request(struct zfcp_fsf_req *fsf_req)
8a36e453
MS		 736{
737 struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data;
5ab944f9
SS		 738 struct zfcp_wka_port *wka_port = ct->wka_port;
739 struct zfcp_adapter *adapter = wka_port->adapter;
d46f384a 740 struct zfcp_dbf *dbf = adapter->dbf;
44cc76f2 741 struct ct_hdr *hdr = sg_virt(ct->req);
d46f384a 742 struct zfcp_san_dbf_record *r = &dbf->san_dbf_buf;
6bc473dd 743 struct zfcp_san_dbf_record_ct_request *oct = &r->u.ct_req;
d94ce6c6 744 int level = 3;
6bc473dd 745 unsigned long flags;
8a36e453 746
d46f384a 747 spin_lock_irqsave(&dbf->san_dbf_lock, flags);
6bc473dd
MP		 748 memset(r, 0, sizeof(*r));
749 strncpy(r->tag, "octc", ZFCP_DBF_TAG_SIZE);
f0216ae9 750 r->fsf_reqid = fsf_req->req_id;
6bc473dd
MP		 751 r->fsf_seqno = fsf_req->seq_no;
752 r->s_id = fc_host_port_id(adapter->scsi_host);
5ab944f9 753 r->d_id = wka_port->d_id;
6bc473dd
MP		 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),
d94ce6c6 761 ZFCP_DBF_SAN_MAX_PAYLOAD);
d46f384a
CS		 762 debug_event(dbf->san_dbf, level, r, sizeof(*r));
763 zfcp_dbf_hexdump(dbf->san_dbf, r, sizeof(*r), level,
d94ce6c6 764 (void *)hdr + sizeof(struct ct_hdr), oct->len);
d46f384a 765 spin_unlock_irqrestore(&dbf->san_dbf_lock, flags);
8a36e453
MS		 766}
767
bfab1637
MP		 768/**
769 * zfcp_san_dbf_event_ct_response - trace event for completion of CT request
770 * @fsf_req: request containing CT response
771 */
4d284cac 772void zfcp_san_dbf_event_ct_response(struct zfcp_fsf_req *fsf_req)
8a36e453
MS		 773{
774 struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data;
5ab944f9
SS		 775 struct zfcp_wka_port *wka_port = ct->wka_port;
776 struct zfcp_adapter *adapter = wka_port->adapter;
44cc76f2 777 struct ct_hdr *hdr = sg_virt(ct->resp);
d46f384a
CS		 778 struct zfcp_dbf *dbf = adapter->dbf;
779 struct zfcp_san_dbf_record *r = &dbf->san_dbf_buf;
6bc473dd 780 struct zfcp_san_dbf_record_ct_response *rct = &r->u.ct_resp;
d94ce6c6 781 int level = 3;
6bc473dd 782 unsigned long flags;
8a36e453 783
d46f384a 784 spin_lock_irqsave(&dbf->san_dbf_lock, flags);
6bc473dd
MP		 785 memset(r, 0, sizeof(*r));
786 strncpy(r->tag, "rctc", ZFCP_DBF_TAG_SIZE);
f0216ae9 787 r->fsf_reqid = fsf_req->req_id;
6bc473dd 788 r->fsf_seqno = fsf_req->seq_no;
5ab944f9 789 r->s_id = wka_port->d_id;
6bc473dd
MP		 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;
39eb7e9a 796 rct->max_res_size = hdr->max_res_size;
6bc473dd 797 rct->len = min((int)ct->resp->length - (int)sizeof(struct ct_hdr),
d94ce6c6 798 ZFCP_DBF_SAN_MAX_PAYLOAD);
d46f384a
CS		 799 debug_event(dbf->san_dbf, level, r, sizeof(*r));
800 zfcp_dbf_hexdump(dbf->san_dbf, r, sizeof(*r), level,
d94ce6c6 801 (void *)hdr + sizeof(struct ct_hdr), rct->len);
d46f384a 802 spin_unlock_irqrestore(&dbf->san_dbf_lock, flags);
8a36e453
MS		 803}
804
92c7a83f
MP		 805static 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)
8a36e453
MS		 809{
810 struct zfcp_adapter *adapter = fsf_req->adapter;
d46f384a
CS		 811 struct zfcp_dbf *dbf = adapter->dbf;
812 struct zfcp_san_dbf_record *rec = &dbf->san_dbf_buf;
8a36e453 813 unsigned long flags;
8a36e453 814
d46f384a 815 spin_lock_irqsave(&dbf->san_dbf_lock, flags);
6bc473dd 816 memset(rec, 0, sizeof(*rec));
0f65e951 817 strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
f0216ae9 818 rec->fsf_reqid = fsf_req->req_id;
0f65e951
MP		 819 rec->fsf_seqno = fsf_req->seq_no;
820 rec->s_id = s_id;
821 rec->d_id = d_id;
6bc473dd 822 rec->u.els.ls_code = ls_code;
d46f384a
CS		 823 debug_event(dbf->san_dbf, level, rec, sizeof(*rec));
824 zfcp_dbf_hexdump(dbf->san_dbf, rec, sizeof(*rec), level,
d94ce6c6 825 buffer, min(buflen, ZFCP_DBF_SAN_MAX_PAYLOAD));
d46f384a 826 spin_unlock_irqrestore(&dbf->san_dbf_lock, flags);
8a36e453
MS		 827}
828
bfab1637
MP		 829/**
830 * zfcp_san_dbf_event_els_request - trace event for issued ELS
831 * @fsf_req: request containing issued ELS
832 */
4d284cac 833void zfcp_san_dbf_event_els_request(struct zfcp_fsf_req *fsf_req)
8a36e453
MS		 834{
835 struct zfcp_send_els *els = (struct zfcp_send_els *)fsf_req->data;
836
92c7a83f
MP		 837 zfcp_san_dbf_event_els("oels", 2, fsf_req,
838 fc_host_port_id(els->adapter->scsi_host),
44cc76f2
SS		 839 els->d_id, *(u8 *) sg_virt(els->req),
840 sg_virt(els->req), els->req->length);
8a36e453
MS		 841}
842
bfab1637
MP		 843/**
844 * zfcp_san_dbf_event_els_response - trace event for completed ELS
845 * @fsf_req: request containing ELS response
846 */
4d284cac 847void zfcp_san_dbf_event_els_response(struct zfcp_fsf_req *fsf_req)
8a36e453
MS		 848{
849 struct zfcp_send_els *els = (struct zfcp_send_els *)fsf_req->data;
850
92c7a83f
MP		 851 zfcp_san_dbf_event_els("rels", 2, fsf_req, els->d_id,
852 fc_host_port_id(els->adapter->scsi_host),
44cc76f2 853 *(u8 *)sg_virt(els->req), sg_virt(els->resp),
92c7a83f 854 els->resp->length);
8a36e453
MS		 855}
856
bfab1637
MP		 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 */
4d284cac 861void zfcp_san_dbf_event_incoming_els(struct zfcp_fsf_req *fsf_req)
8a36e453
MS		 862{
863 struct zfcp_adapter *adapter = fsf_req->adapter;
92c7a83f
MP		 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),
c41f8cbd 871 buf->payload.data[0], (void *)buf->payload.data,
92c7a83f 872 length);
8a36e453
MS		 873}
874
92c7a83f
MP		 875static int zfcp_san_dbf_view_format(debug_info_t *id, struct debug_view *view,
876 char *out_buf, const char *in_buf)
8a36e453 877{
b634fff7 878 struct zfcp_san_dbf_record *r = (struct zfcp_san_dbf_record *)in_buf;
b634fff7 879 char *p = out_buf;
8a36e453 880
b634fff7 881 if (strncmp(r->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
8a36e453
MS		 882 return 0;
883
a9c85775 884 zfcp_dbf_tag(&p, "tag", r->tag);
b634fff7
MP		 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) {
6bc473dd
MP		 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);
b634fff7 898 } else if (strncmp(r->tag, "rctc", ZFCP_DBF_TAG_SIZE) == 0) {
6bc473dd
MP		 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);
39eb7e9a 905 zfcp_dbf_out(&p, "max_res_size", "0x%04x", ct->max_res_size);
b634fff7
MP		 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) {
6bc473dd
MP		 909 struct zfcp_san_dbf_record_els *els = &r->u.els;
910 zfcp_dbf_out(&p, "ls_code", "0x%02x", els->ls_code);
8a36e453 911 }
b634fff7 912 return p - out_buf;
8a36e453
MS		 913}
914
2b67fc46 915static struct debug_view zfcp_san_dbf_view = {
8a36e453
MS		 916 "structured",
917 NULL,
918 &zfcp_dbf_view_header,
919 &zfcp_san_dbf_view_format,
920 NULL,
921 NULL
922};
923
92c7a83f
MP		 924static void zfcp_scsi_dbf_event(const char *tag, const char *tag2, int level,
925 struct zfcp_adapter *adapter,
926 struct scsi_cmnd *scsi_cmnd,
927 struct zfcp_fsf_req *fsf_req,
928 unsigned long old_req_id)
8a36e453 929{
d46f384a
CS		 930 struct zfcp_dbf *dbf = adapter->dbf;
931 struct zfcp_scsi_dbf_record *rec = &dbf->scsi_dbf_buf;
8a36e453
MS		 932 struct zfcp_dbf_dump *dump = (struct zfcp_dbf_dump *)rec;
933 unsigned long flags;
934 struct fcp_rsp_iu *fcp_rsp;
935 char *fcp_rsp_info = NULL, *fcp_sns_info = NULL;
936 int offset = 0, buflen = 0;
937
d46f384a 938 spin_lock_irqsave(&dbf->scsi_dbf_lock, flags);
8a36e453 939 do {
6bc473dd 940 memset(rec, 0, sizeof(*rec));
8a36e453
MS		 941 if (offset == 0) {
942 strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
943 strncpy(rec->tag2, tag2, ZFCP_DBF_TAG_SIZE);
ed829ad6
MS		 944 if (scsi_cmnd != NULL) {
945 if (scsi_cmnd->device) {
946 rec->scsi_id = scsi_cmnd->device->id;
947 rec->scsi_lun = scsi_cmnd->device->lun;
948 }
949 rec->scsi_result = scsi_cmnd->result;
950 rec->scsi_cmnd = (unsigned long)scsi_cmnd;
951 rec->scsi_serial = scsi_cmnd->serial_number;
64a87b24 952 memcpy(rec->scsi_opcode, scsi_cmnd->cmnd,
ed829ad6
MS		 953 min((int)scsi_cmnd->cmd_len,
954 ZFCP_DBF_SCSI_OPCODE));
955 rec->scsi_retries = scsi_cmnd->retries;
956 rec->scsi_allowed = scsi_cmnd->allowed;
8a36e453 957 }
8a36e453
MS		 958 if (fsf_req != NULL) {
959 fcp_rsp = (struct fcp_rsp_iu *)
960 &(fsf_req->qtcb->bottom.io.fcp_rsp);
f76af7d7 961 fcp_rsp_info = (unsigned char *) &fcp_rsp[1];
8a36e453
MS		 962 fcp_sns_info =
963 zfcp_get_fcp_sns_info_ptr(fcp_rsp);
964
6bc473dd
MP		 965 rec->rsp_validity = fcp_rsp->validity.value;
966 rec->rsp_scsi_status = fcp_rsp->scsi_status;
967 rec->rsp_resid = fcp_rsp->fcp_resid;
8a36e453 968 if (fcp_rsp->validity.bits.fcp_rsp_len_valid)
6bc473dd 969 rec->rsp_code = *(fcp_rsp_info + 3);
8a36e453
MS		 970 if (fcp_rsp->validity.bits.fcp_sns_len_valid) {
971 buflen = min((int)fcp_rsp->fcp_sns_len,
972 ZFCP_DBF_SCSI_MAX_FCP_SNS_INFO);
6bc473dd
MP		 973 rec->sns_info_len = buflen;
974 memcpy(rec->sns_info, fcp_sns_info,
8a36e453
MS		 975 min(buflen,
976 ZFCP_DBF_SCSI_FCP_SNS_INFO));
977 offset += min(buflen,
978 ZFCP_DBF_SCSI_FCP_SNS_INFO);
979 }
980
f0216ae9 981 rec->fsf_reqid = fsf_req->req_id;
8a36e453
MS		 982 rec->fsf_seqno = fsf_req->seq_no;
983 rec->fsf_issued = fsf_req->issued;
984 }
6bc473dd 985 rec->old_fsf_reqid = old_req_id;
8a36e453
MS		 986 } else {
987 strncpy(dump->tag, "dump", ZFCP_DBF_TAG_SIZE);
988 dump->total_size = buflen;
989 dump->offset = offset;
990 dump->size = min(buflen - offset,
991 (int)sizeof(struct
992 zfcp_scsi_dbf_record) -
993 (int)sizeof(struct zfcp_dbf_dump));
994 memcpy(dump->data, fcp_sns_info + offset, dump->size);
995 offset += dump->size;
996 }
d46f384a 997 debug_event(dbf->scsi_dbf, level, rec, sizeof(*rec));
8a36e453 998 } while (offset < buflen);
d46f384a 999 spin_unlock_irqrestore(&dbf->scsi_dbf_lock, flags);
8a36e453
MS		 1000}
1001
bfab1637
MP		 1002/**
1003 * zfcp_scsi_dbf_event_result - trace event for SCSI command completion
1004 * @tag: tag indicating success or failure of SCSI command
1005 * @level: trace level applicable for this event
1006 * @adapter: adapter that has been used to issue the SCSI command
1007 * @scsi_cmnd: SCSI command pointer
1008 * @fsf_req: request used to issue SCSI command (might be NULL)
1009 */
92c7a83f
MP		 1010void zfcp_scsi_dbf_event_result(const char *tag, int level,
1011 struct zfcp_adapter *adapter,
1012 struct scsi_cmnd *scsi_cmnd,
1013 struct zfcp_fsf_req *fsf_req)
8a36e453 1014{
92c7a83f 1015 zfcp_scsi_dbf_event("rslt", tag, level, adapter, scsi_cmnd, fsf_req, 0);
8a36e453
MS		 1016}
1017
bfab1637
MP		 1018/**
1019 * zfcp_scsi_dbf_event_abort - trace event for SCSI command abort
1020 * @tag: tag indicating success or failure of abort operation
1021 * @adapter: adapter thas has been used to issue SCSI command to be aborted
1022 * @scsi_cmnd: SCSI command to be aborted
1023 * @new_fsf_req: request containing abort (might be NULL)
1024 * @old_req_id: identifier of request containg SCSI command to be aborted
1025 */
92c7a83f
MP		 1026void zfcp_scsi_dbf_event_abort(const char *tag, struct zfcp_adapter *adapter,
1027 struct scsi_cmnd *scsi_cmnd,
1028 struct zfcp_fsf_req *new_fsf_req,
1029 unsigned long old_req_id)
8a36e453 1030{
92c7a83f
MP		 1031 zfcp_scsi_dbf_event("abrt", tag, 1, adapter, scsi_cmnd, new_fsf_req,
1032 old_req_id);
8a36e453
MS		 1033}
1034
bfab1637
MP		 1035/**
1036 * zfcp_scsi_dbf_event_devreset - trace event for Logical Unit or Target Reset
1037 * @tag: tag indicating success or failure of reset operation
1038 * @flag: indicates type of reset (Target Reset, Logical Unit Reset)
1039 * @unit: unit that needs reset
1040 * @scsi_cmnd: SCSI command which caused this error recovery
1041 */
92c7a83f
MP		 1042void zfcp_scsi_dbf_event_devreset(const char *tag, u8 flag,
1043 struct zfcp_unit *unit,
1044 struct scsi_cmnd *scsi_cmnd)
8a36e453 1045{
92c7a83f
MP		 1046 zfcp_scsi_dbf_event(flag == FCP_TARGET_RESET ? "trst" : "lrst", tag, 1,
1047 unit->port->adapter, scsi_cmnd, NULL, 0);
8a36e453
MS		 1048}
1049
92c7a83f
MP		 1050static int zfcp_scsi_dbf_view_format(debug_info_t *id, struct debug_view *view,
1051 char *out_buf, const char *in_buf)
8a36e453 1052{
b634fff7 1053 struct zfcp_scsi_dbf_record *r = (struct zfcp_scsi_dbf_record *)in_buf;
8fc5af16 1054 struct timespec t;
b634fff7 1055 char *p = out_buf;
8a36e453 1056
b634fff7 1057 if (strncmp(r->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
8a36e453
MS		 1058 return 0;
1059
a9c85775
MP		 1060 zfcp_dbf_tag(&p, "tag", r->tag);
1061 zfcp_dbf_tag(&p, "tag2", r->tag2);
b634fff7
MP		 1062 zfcp_dbf_out(&p, "scsi_id", "0x%08x", r->scsi_id);
1063 zfcp_dbf_out(&p, "scsi_lun", "0x%08x", r->scsi_lun);
1064 zfcp_dbf_out(&p, "scsi_result", "0x%08x", r->scsi_result);
1065 zfcp_dbf_out(&p, "scsi_cmnd", "0x%0Lx", r->scsi_cmnd);
1066 zfcp_dbf_out(&p, "scsi_serial", "0x%016Lx", r->scsi_serial);
df29f4ac
MP		 1067 zfcp_dbf_outd(&p, "scsi_opcode", r->scsi_opcode, ZFCP_DBF_SCSI_OPCODE,
1068 0, ZFCP_DBF_SCSI_OPCODE);
b634fff7
MP		 1069 zfcp_dbf_out(&p, "scsi_retries", "0x%02x", r->scsi_retries);
1070 zfcp_dbf_out(&p, "scsi_allowed", "0x%02x", r->scsi_allowed);
1071 if (strncmp(r->tag, "abrt", ZFCP_DBF_TAG_SIZE) == 0)
6bc473dd 1072 zfcp_dbf_out(&p, "old_fsf_reqid", "0x%0Lx", r->old_fsf_reqid);
b634fff7
MP		 1073 zfcp_dbf_out(&p, "fsf_reqid", "0x%0Lx", r->fsf_reqid);
1074 zfcp_dbf_out(&p, "fsf_seqno", "0x%08x", r->fsf_seqno);
1075 zfcp_dbf_timestamp(r->fsf_issued, &t);
1076 zfcp_dbf_out(&p, "fsf_issued", "%011lu:%06lu", t.tv_sec, t.tv_nsec);
1077
1078 if (strncmp(r->tag, "rslt", ZFCP_DBF_TAG_SIZE) == 0) {
6bc473dd
MP		 1079 zfcp_dbf_out(&p, "fcp_rsp_validity", "0x%02x", r->rsp_validity);
1080 zfcp_dbf_out(&p, "fcp_rsp_scsi_status", "0x%02x",
1081 r->rsp_scsi_status);
1082 zfcp_dbf_out(&p, "fcp_rsp_resid", "0x%08x", r->rsp_resid);
1083 zfcp_dbf_out(&p, "fcp_rsp_code", "0x%08x", r->rsp_code);
1084 zfcp_dbf_out(&p, "fcp_sns_info_len", "0x%08x", r->sns_info_len);
1085 zfcp_dbf_outd(&p, "fcp_sns_info", r->sns_info,
1086 min((int)r->sns_info_len,
df29f4ac 1087 ZFCP_DBF_SCSI_FCP_SNS_INFO), 0,
6bc473dd 1088 r->sns_info_len);
8a36e453 1089 }
b634fff7
MP		 1090 p += sprintf(p, "\n");
1091 return p - out_buf;
8a36e453
MS		 1092}
1093
2b67fc46 1094static struct debug_view zfcp_scsi_dbf_view = {
8a36e453
MS		 1095 "structured",
1096 NULL,
1097 &zfcp_dbf_view_header,
1098 &zfcp_scsi_dbf_view_format,
1099 NULL,
1100 NULL
1101};
1102
d46f384a
CS		 1103static debug_info_t *zfcp_dbf_reg(const char *name, int level,
1104 struct debug_view *view, int size)
1105{
1106 struct debug_info *d;
1107
1108 d = debug_register(name, dbfsize, level, size);
1109 if (!d)
1110 return NULL;
1111
1112 debug_register_view(d, &debug_hex_ascii_view);
1113 debug_register_view(d, view);
1114 debug_set_level(d, level);
1115
1116 return d;
1117}
1118
8a36e453
MS		 1119/**
1120 * zfcp_adapter_debug_register - registers debug feature for an adapter
1121 * @adapter: pointer to adapter for which debug features should be registered
1122 * return: -ENOMEM on error, 0 otherwise
1123 */
1124int zfcp_adapter_debug_register(struct zfcp_adapter *adapter)
1125{
1126 char dbf_name[DEBUG_MAX_NAME_LEN];
d46f384a
CS		 1127 struct zfcp_dbf *dbf;
1128
1129 dbf = kmalloc(sizeof(struct zfcp_dbf), GFP_KERNEL);
1130 if (!dbf)
1131 return -ENOMEM;
1132
1133 spin_lock_init(&dbf->hba_dbf_lock);
1134 spin_lock_init(&dbf->san_dbf_lock);
1135 spin_lock_init(&dbf->scsi_dbf_lock);
1136 spin_lock_init(&dbf->rec_dbf_lock);
8a36e453 1137
d79a83db 1138 /* debug feature area which records recovery activity */
b225cf9b 1139 sprintf(dbf_name, "zfcp_%s_rec", dev_name(&adapter->ccw_device->dev));
d46f384a
CS		 1140 dbf->rec_dbf = zfcp_dbf_reg(dbf_name, 3, &zfcp_rec_dbf_view,
1141 sizeof(struct zfcp_rec_dbf_record));
1142 if (!dbf->rec_dbf)
1143 goto fail_rec;
d79a83db 1144
8a36e453 1145 /* debug feature area which records HBA (FSF and QDIO) conditions */
b225cf9b 1146 sprintf(dbf_name, "zfcp_%s_hba", dev_name(&adapter->ccw_device->dev));
d46f384a
CS		 1147 dbf->hba_dbf = zfcp_dbf_reg(dbf_name, 3, &zfcp_hba_dbf_view,
1148 sizeof(struct zfcp_hba_dbf_record));
1149 if (!dbf->hba_dbf)
1150 goto fail_hba;
8a36e453
MS		 1151
1152 /* debug feature area which records SAN command failures and recovery */
b225cf9b 1153 sprintf(dbf_name, "zfcp_%s_san", dev_name(&adapter->ccw_device->dev));
d46f384a
CS		 1154 dbf->san_dbf = zfcp_dbf_reg(dbf_name, 6, &zfcp_san_dbf_view,
1155 sizeof(struct zfcp_san_dbf_record));
1156 if (!dbf->san_dbf)
1157 goto fail_san;
8a36e453
MS		 1158
1159 /* debug feature area which records SCSI command failures and recovery */
b225cf9b 1160 sprintf(dbf_name, "zfcp_%s_scsi", dev_name(&adapter->ccw_device->dev));
d46f384a
CS		 1161 dbf->scsi_dbf = zfcp_dbf_reg(dbf_name, 3, &zfcp_scsi_dbf_view,
1162 sizeof(struct zfcp_scsi_dbf_record));
1163 if (!dbf->scsi_dbf)
1164 goto fail_scsi;
8a36e453 1165
d46f384a 1166 adapter->dbf = dbf;
8a36e453
MS		 1167 return 0;
1168
d46f384a
CS		 1169fail_scsi:
1170 debug_unregister(dbf->san_dbf);
1171fail_san:
1172 debug_unregister(dbf->hba_dbf);
1173fail_hba:
1174 debug_unregister(dbf->rec_dbf);
1175fail_rec:
1176 kfree(dbf);
8a36e453
MS		 1177 return -ENOMEM;
1178}
1179
1180/**
1181 * zfcp_adapter_debug_unregister - unregisters debug feature for an adapter
1182 * @adapter: pointer to adapter for which debug features should be unregistered
1183 */
1184void zfcp_adapter_debug_unregister(struct zfcp_adapter *adapter)
1185{
d46f384a
CS		 1186 debug_unregister(adapter->dbf->scsi_dbf);
1187 debug_unregister(adapter->dbf->san_dbf);
1188 debug_unregister(adapter->dbf->hba_dbf);
1189 debug_unregister(adapter->dbf->rec_dbf);
1190 kfree(adapter->dbf);
1191 adapter->dbf = NULL;
8a36e453 1192}
Linux kernel - Deliverables
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