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[SCSI] zfcp: Move workqueue to adapter struct
[linux-2.6-block.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
2e261af8
CS		 123void _zfcp_hba_dbf_event_fsf_response(const char *tag2, int level,
124 struct zfcp_fsf_req *fsf_req,
125 struct zfcp_dbf *dbf)
8a36e453 126{
8a36e453
MS		 127 struct fsf_qtcb *qtcb = fsf_req->qtcb;
128 union fsf_prot_status_qual *prot_status_qual =
92c7a83f 129 &qtcb->prefix.prot_status_qual;
8a36e453
MS		 130 union fsf_status_qual *fsf_status_qual = &qtcb->header.fsf_status_qual;
131 struct scsi_cmnd *scsi_cmnd;
132 struct zfcp_port *port;
133 struct zfcp_unit *unit;
134 struct zfcp_send_els *send_els;
d46f384a 135 struct zfcp_hba_dbf_record *rec = &dbf->hba_dbf_buf;
6bc473dd 136 struct zfcp_hba_dbf_record_response *response = &rec->u.response;
8a36e453
MS		 137 unsigned long flags;
138
d46f384a 139 spin_lock_irqsave(&dbf->hba_dbf_lock, flags);
6bc473dd 140 memset(rec, 0, sizeof(*rec));
8a36e453 141 strncpy(rec->tag, "resp", ZFCP_DBF_TAG_SIZE);
2e261af8 142 strncpy(rec->tag2, tag2, ZFCP_DBF_TAG_SIZE);
8a36e453
MS		 143
144 response->fsf_command = fsf_req->fsf_command;
f0216ae9 145 response->fsf_reqid = fsf_req->req_id;
8a36e453
MS		 146 response->fsf_seqno = fsf_req->seq_no;
147 response->fsf_issued = fsf_req->issued;
148 response->fsf_prot_status = qtcb->prefix.prot_status;
149 response->fsf_status = qtcb->header.fsf_status;
150 memcpy(response->fsf_prot_status_qual,
151 prot_status_qual, FSF_PROT_STATUS_QUAL_SIZE);
152 memcpy(response->fsf_status_qual,
153 fsf_status_qual, FSF_STATUS_QUALIFIER_SIZE);
154 response->fsf_req_status = fsf_req->status;
155 response->sbal_first = fsf_req->sbal_first;
e891bffe 156 response->sbal_last = fsf_req->sbal_last;
c3baa9a2 157 response->sbal_response = fsf_req->sbal_response;
8a36e453
MS		 158 response->pool = fsf_req->pool != NULL;
159 response->erp_action = (unsigned long)fsf_req->erp_action;
160
161 switch (fsf_req->fsf_command) {
162 case FSF_QTCB_FCP_CMND:
163 if (fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
164 break;
165 scsi_cmnd = (struct scsi_cmnd *)fsf_req->data;
6bc473dd
MP		 166 if (scsi_cmnd) {
167 response->u.fcp.cmnd = (unsigned long)scsi_cmnd;
168 response->u.fcp.serial = scsi_cmnd->serial_number;
8a36e453
MS		 169 }
170 break;
171
172 case FSF_QTCB_OPEN_PORT_WITH_DID:
173 case FSF_QTCB_CLOSE_PORT:
174 case FSF_QTCB_CLOSE_PHYSICAL_PORT:
175 port = (struct zfcp_port *)fsf_req->data;
6bc473dd
MP		 176 response->u.port.wwpn = port->wwpn;
177 response->u.port.d_id = port->d_id;
178 response->u.port.port_handle = qtcb->header.port_handle;
8a36e453
MS		 179 break;
180
181 case FSF_QTCB_OPEN_LUN:
182 case FSF_QTCB_CLOSE_LUN:
183 unit = (struct zfcp_unit *)fsf_req->data;
184 port = unit->port;
6bc473dd
MP		 185 response->u.unit.wwpn = port->wwpn;
186 response->u.unit.fcp_lun = unit->fcp_lun;
187 response->u.unit.port_handle = qtcb->header.port_handle;
188 response->u.unit.lun_handle = qtcb->header.lun_handle;
8a36e453
MS		 189 break;
190
191 case FSF_QTCB_SEND_ELS:
192 send_els = (struct zfcp_send_els *)fsf_req->data;
6bc473dd
MP		 193 response->u.els.d_id = qtcb->bottom.support.d_id;
194 response->u.els.ls_code = send_els->ls_code >> 24;
8a36e453
MS		 195 break;
196
197 case FSF_QTCB_ABORT_FCP_CMND:
198 case FSF_QTCB_SEND_GENERIC:
199 case FSF_QTCB_EXCHANGE_CONFIG_DATA:
200 case FSF_QTCB_EXCHANGE_PORT_DATA:
201 case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
202 case FSF_QTCB_UPLOAD_CONTROL_FILE:
203 break;
204 }
205
d46f384a 206 debug_event(dbf->hba_dbf, level, rec, sizeof(*rec));
b75db731
MP		 207
208 /* have fcp channel microcode fixed to use as little as possible */
209 if (fsf_req->fsf_command != FSF_QTCB_FCP_CMND) {
210 /* adjust length skipping trailing zeros */
211 char *buf = (char *)qtcb + qtcb->header.log_start;
212 int len = qtcb->header.log_length;
213 for (; len && !buf[len - 1]; len--);
d46f384a
CS		 214 zfcp_dbf_hexdump(dbf->hba_dbf, rec, sizeof(*rec), level, buf,
215 len);
b75db731
MP		 216 }
217
d46f384a 218 spin_unlock_irqrestore(&dbf->hba_dbf_lock, flags);
8a36e453
MS		 219}
220
2e261af8
CS		 221void _zfcp_hba_dbf_event_fsf_unsol(const char *tag, int level,
222 struct zfcp_adapter *adapter,
223 struct fsf_status_read_buffer *status_buffer)
8a36e453 224{
d46f384a
CS		 225 struct zfcp_dbf *dbf = adapter->dbf;
226 struct zfcp_hba_dbf_record *rec = &dbf->hba_dbf_buf;
8a36e453
MS		 227 unsigned long flags;
228
d46f384a 229 spin_lock_irqsave(&dbf->hba_dbf_lock, flags);
6bc473dd 230 memset(rec, 0, sizeof(*rec));
8a36e453
MS		 231 strncpy(rec->tag, "stat", ZFCP_DBF_TAG_SIZE);
232 strncpy(rec->tag2, tag, ZFCP_DBF_TAG_SIZE);
233
d26ab06e 234 rec->u.status.failed = atomic_read(&adapter->stat_miss);
8a36e453 235 if (status_buffer != NULL) {
6bc473dd
MP		 236 rec->u.status.status_type = status_buffer->status_type;
237 rec->u.status.status_subtype = status_buffer->status_subtype;
238 memcpy(&rec->u.status.queue_designator,
8a36e453
MS		 239 &status_buffer->queue_designator,
240 sizeof(struct fsf_queue_designator));
241
242 switch (status_buffer->status_type) {
243 case FSF_STATUS_READ_SENSE_DATA_AVAIL:
6bc473dd 244 rec->u.status.payload_size =
8a36e453
MS		 245 ZFCP_DBF_UNSOL_PAYLOAD_SENSE_DATA_AVAIL;
246 break;
247
248 case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
6bc473dd 249 rec->u.status.payload_size =
8a36e453
MS		 250 ZFCP_DBF_UNSOL_PAYLOAD_BIT_ERROR_THRESHOLD;
251 break;
252
253 case FSF_STATUS_READ_LINK_DOWN:
aef4a983
MS		 254 switch (status_buffer->status_subtype) {
255 case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
256 case FSF_STATUS_READ_SUB_FDISC_FAILED:
6bc473dd 257 rec->u.status.payload_size =
aef4a983
MS		 258 sizeof(struct fsf_link_down_info);
259 }
8a36e453
MS		 260 break;
261
aef4a983 262 case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
6bc473dd 263 rec->u.status.payload_size =
aef4a983
MS		 264 ZFCP_DBF_UNSOL_PAYLOAD_FEATURE_UPDATE_ALERT;
265 break;
8a36e453 266 }
6bc473dd
MP		 267 memcpy(&rec->u.status.payload,
268 &status_buffer->payload, rec->u.status.payload_size);
8a36e453
MS		 269 }
270
2e261af8 271 debug_event(dbf->hba_dbf, level, rec, sizeof(*rec));
d46f384a 272 spin_unlock_irqrestore(&dbf->hba_dbf_lock, flags);
8a36e453
MS		 273}
274
bfab1637
MP		 275/**
276 * zfcp_hba_dbf_event_qdio - trace event for QDIO related failure
277 * @adapter: adapter affected by this QDIO related event
bfab1637 278 * @qdio_error: as passed by qdio module
bfab1637
MP		 279 * @sbal_index: first buffer with error condition, as passed by qdio module
280 * @sbal_count: number of buffers affected, as passed by qdio module
281 */
779e6e1c
JG		 282void zfcp_hba_dbf_event_qdio(struct zfcp_adapter *adapter,
283 unsigned int qdio_error, int sbal_index,
284 int sbal_count)
8a36e453 285{
d46f384a
CS		 286 struct zfcp_dbf *dbf = adapter->dbf;
287 struct zfcp_hba_dbf_record *r = &dbf->hba_dbf_buf;
8a36e453
MS		 288 unsigned long flags;
289
d46f384a 290 spin_lock_irqsave(&dbf->hba_dbf_lock, flags);
6bc473dd
MP		 291 memset(r, 0, sizeof(*r));
292 strncpy(r->tag, "qdio", ZFCP_DBF_TAG_SIZE);
6bc473dd 293 r->u.qdio.qdio_error = qdio_error;
6bc473dd
MP		 294 r->u.qdio.sbal_index = sbal_index;
295 r->u.qdio.sbal_count = sbal_count;
d46f384a
CS		 296 debug_event(dbf->hba_dbf, 0, r, sizeof(*r));
297 spin_unlock_irqrestore(&dbf->hba_dbf_lock, flags);
8a36e453
MS		 298}
299
57069386
SS		 300/**
301 * zfcp_hba_dbf_event_berr - trace event for bit error threshold
302 * @adapter: adapter affected by this QDIO related event
303 * @req: fsf request
304 */
305void zfcp_hba_dbf_event_berr(struct zfcp_adapter *adapter,
306 struct zfcp_fsf_req *req)
307{
d46f384a
CS		 308 struct zfcp_dbf *dbf = adapter->dbf;
309 struct zfcp_hba_dbf_record *r = &dbf->hba_dbf_buf;
57069386
SS		 310 struct fsf_status_read_buffer *sr_buf = req->data;
311 struct fsf_bit_error_payload *err = &sr_buf->payload.bit_error;
312 unsigned long flags;
313
d46f384a 314 spin_lock_irqsave(&dbf->hba_dbf_lock, flags);
57069386
SS		 315 memset(r, 0, sizeof(*r));
316 strncpy(r->tag, "berr", ZFCP_DBF_TAG_SIZE);
317 memcpy(&r->u.berr, err, sizeof(struct fsf_bit_error_payload));
d46f384a
CS		 318 debug_event(dbf->hba_dbf, 0, r, sizeof(*r));
319 spin_unlock_irqrestore(&dbf->hba_dbf_lock, flags);
57069386 320}
a9c85775
MP		 321static void zfcp_hba_dbf_view_response(char **p,
322 struct zfcp_hba_dbf_record_response *r)
8a36e453 323{
8fc5af16 324 struct timespec t;
8a36e453 325
a9c85775
MP		 326 zfcp_dbf_out(p, "fsf_command", "0x%08x", r->fsf_command);
327 zfcp_dbf_out(p, "fsf_reqid", "0x%0Lx", r->fsf_reqid);
328 zfcp_dbf_out(p, "fsf_seqno", "0x%08x", r->fsf_seqno);
b634fff7 329 zfcp_dbf_timestamp(r->fsf_issued, &t);
a9c85775
MP		 330 zfcp_dbf_out(p, "fsf_issued", "%011lu:%06lu", t.tv_sec, t.tv_nsec);
331 zfcp_dbf_out(p, "fsf_prot_status", "0x%08x", r->fsf_prot_status);
332 zfcp_dbf_out(p, "fsf_status", "0x%08x", r->fsf_status);
333 zfcp_dbf_outd(p, "fsf_prot_status_qual", r->fsf_prot_status_qual,
df29f4ac 334 FSF_PROT_STATUS_QUAL_SIZE, 0, FSF_PROT_STATUS_QUAL_SIZE);
a9c85775 335 zfcp_dbf_outd(p, "fsf_status_qual", r->fsf_status_qual,
df29f4ac 336 FSF_STATUS_QUALIFIER_SIZE, 0, FSF_STATUS_QUALIFIER_SIZE);
a9c85775
MP		 337 zfcp_dbf_out(p, "fsf_req_status", "0x%08x", r->fsf_req_status);
338 zfcp_dbf_out(p, "sbal_first", "0x%02x", r->sbal_first);
e891bffe 339 zfcp_dbf_out(p, "sbal_last", "0x%02x", r->sbal_last);
c3baa9a2 340 zfcp_dbf_out(p, "sbal_response", "0x%02x", r->sbal_response);
a9c85775 341 zfcp_dbf_out(p, "pool", "0x%02x", r->pool);
b634fff7
MP		 342
343 switch (r->fsf_command) {
8a36e453 344 case FSF_QTCB_FCP_CMND:
b634fff7 345 if (r->fsf_req_status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
8a36e453 346 break;
6bc473dd
MP		 347 zfcp_dbf_out(p, "scsi_cmnd", "0x%0Lx", r->u.fcp.cmnd);
348 zfcp_dbf_out(p, "scsi_serial", "0x%016Lx", r->u.fcp.serial);
d94ce6c6 349 p += sprintf(*p, "\n");
8a36e453
MS		 350 break;
351
352 case FSF_QTCB_OPEN_PORT_WITH_DID:
353 case FSF_QTCB_CLOSE_PORT:
354 case FSF_QTCB_CLOSE_PHYSICAL_PORT:
6bc473dd
MP		 355 zfcp_dbf_out(p, "wwpn", "0x%016Lx", r->u.port.wwpn);
356 zfcp_dbf_out(p, "d_id", "0x%06x", r->u.port.d_id);
357 zfcp_dbf_out(p, "port_handle", "0x%08x", r->u.port.port_handle);
8a36e453
MS		 358 break;
359
360 case FSF_QTCB_OPEN_LUN:
361 case FSF_QTCB_CLOSE_LUN:
6bc473dd
MP		 362 zfcp_dbf_out(p, "wwpn", "0x%016Lx", r->u.unit.wwpn);
363 zfcp_dbf_out(p, "fcp_lun", "0x%016Lx", r->u.unit.fcp_lun);
364 zfcp_dbf_out(p, "port_handle", "0x%08x", r->u.unit.port_handle);
365 zfcp_dbf_out(p, "lun_handle", "0x%08x", r->u.unit.lun_handle);
8a36e453
MS		 366 break;
367
368 case FSF_QTCB_SEND_ELS:
6bc473dd
MP		 369 zfcp_dbf_out(p, "d_id", "0x%06x", r->u.els.d_id);
370 zfcp_dbf_out(p, "ls_code", "0x%02x", r->u.els.ls_code);
8a36e453
MS		 371 break;
372
373 case FSF_QTCB_ABORT_FCP_CMND:
374 case FSF_QTCB_SEND_GENERIC:
375 case FSF_QTCB_EXCHANGE_CONFIG_DATA:
376 case FSF_QTCB_EXCHANGE_PORT_DATA:
377 case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
378 case FSF_QTCB_UPLOAD_CONTROL_FILE:
379 break;
380 }
8a36e453
MS		 381}
382
a9c85775
MP		 383static void zfcp_hba_dbf_view_status(char **p,
384 struct zfcp_hba_dbf_record_status *r)
8a36e453 385{
a9c85775
MP		 386 zfcp_dbf_out(p, "failed", "0x%02x", r->failed);
387 zfcp_dbf_out(p, "status_type", "0x%08x", r->status_type);
388 zfcp_dbf_out(p, "status_subtype", "0x%08x", r->status_subtype);
389 zfcp_dbf_outd(p, "queue_designator", (char *)&r->queue_designator,
df29f4ac
MP		 390 sizeof(struct fsf_queue_designator), 0,
391 sizeof(struct fsf_queue_designator));
a9c85775 392 zfcp_dbf_outd(p, "payload", (char *)&r->payload, r->payload_size, 0,
df29f4ac 393 r->payload_size);
8a36e453
MS		 394}
395
a9c85775 396static void zfcp_hba_dbf_view_qdio(char **p, struct zfcp_hba_dbf_record_qdio *r)
8a36e453 397{
a9c85775 398 zfcp_dbf_out(p, "qdio_error", "0x%08x", r->qdio_error);
a9c85775
MP		 399 zfcp_dbf_out(p, "sbal_index", "0x%02x", r->sbal_index);
400 zfcp_dbf_out(p, "sbal_count", "0x%02x", r->sbal_count);
8a36e453
MS		 401}
402
57069386
SS		 403static void zfcp_hba_dbf_view_berr(char **p, struct fsf_bit_error_payload *r)
404{
405 zfcp_dbf_out(p, "link_failures", "%d", r->link_failure_error_count);
406 zfcp_dbf_out(p, "loss_of_sync_err", "%d", r->loss_of_sync_error_count);
407 zfcp_dbf_out(p, "loss_of_sig_err", "%d", r->loss_of_signal_error_count);
408 zfcp_dbf_out(p, "prim_seq_err", "%d",
409 r->primitive_sequence_error_count);
410 zfcp_dbf_out(p, "inval_trans_word_err", "%d",
411 r->invalid_transmission_word_error_count);
412 zfcp_dbf_out(p, "CRC_errors", "%d", r->crc_error_count);
413 zfcp_dbf_out(p, "prim_seq_event_to", "%d",
414 r->primitive_sequence_event_timeout_count);
415 zfcp_dbf_out(p, "elast_buf_overrun_err", "%d",
416 r->elastic_buffer_overrun_error_count);
417 zfcp_dbf_out(p, "adv_rec_buf2buf_cred", "%d",
418 r->advertised_receive_b2b_credit);
419 zfcp_dbf_out(p, "curr_rec_buf2buf_cred", "%d",
420 r->current_receive_b2b_credit);
421 zfcp_dbf_out(p, "adv_trans_buf2buf_cred", "%d",
422 r->advertised_transmit_b2b_credit);
423 zfcp_dbf_out(p, "curr_trans_buf2buf_cred", "%d",
424 r->current_transmit_b2b_credit);
425}
426
a9c85775
MP		 427static int zfcp_hba_dbf_view_format(debug_info_t *id, struct debug_view *view,
428 char *out_buf, const char *in_buf)
8a36e453 429{
a9c85775
MP		 430 struct zfcp_hba_dbf_record *r = (struct zfcp_hba_dbf_record *)in_buf;
431 char *p = out_buf;
8a36e453 432
a9c85775 433 if (strncmp(r->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
8a36e453
MS		 434 return 0;
435
a9c85775
MP		 436 zfcp_dbf_tag(&p, "tag", r->tag);
437 if (isalpha(r->tag2[0]))
438 zfcp_dbf_tag(&p, "tag2", r->tag2);
439
440 if (strncmp(r->tag, "resp", ZFCP_DBF_TAG_SIZE) == 0)
6bc473dd 441 zfcp_hba_dbf_view_response(&p, &r->u.response);
a9c85775 442 else if (strncmp(r->tag, "stat", ZFCP_DBF_TAG_SIZE) == 0)
6bc473dd 443 zfcp_hba_dbf_view_status(&p, &r->u.status);
a9c85775 444 else if (strncmp(r->tag, "qdio", ZFCP_DBF_TAG_SIZE) == 0)
6bc473dd 445 zfcp_hba_dbf_view_qdio(&p, &r->u.qdio);
57069386
SS		 446 else if (strncmp(r->tag, "berr", ZFCP_DBF_TAG_SIZE) == 0)
447 zfcp_hba_dbf_view_berr(&p, &r->u.berr);
a9c85775 448
d94ce6c6
CS		 449 if (strncmp(r->tag, "resp", ZFCP_DBF_TAG_SIZE) != 0)
450 p += sprintf(p, "\n");
a9c85775 451 return p - out_buf;
8a36e453
MS		 452}
453
2b67fc46 454static struct debug_view zfcp_hba_dbf_view = {
8a36e453
MS		 455 "structured",
456 NULL,
457 &zfcp_dbf_view_header,
458 &zfcp_hba_dbf_view_format,
459 NULL,
460 NULL
461};
462
d79a83db 463static const char *zfcp_rec_dbf_tags[] = {
348447e8 464 [ZFCP_REC_DBF_ID_THREAD] = "thread",
698ec016 465 [ZFCP_REC_DBF_ID_TARGET] = "target",
9467a9b3 466 [ZFCP_REC_DBF_ID_TRIGGER] = "trigger",
6f4f365e 467 [ZFCP_REC_DBF_ID_ACTION] = "action",
d79a83db
MP		 468};
469
d79a83db
MP		 470static int zfcp_rec_dbf_view_format(debug_info_t *id, struct debug_view *view,
471 char *buf, const char *_rec)
472{
473 struct zfcp_rec_dbf_record *r = (struct zfcp_rec_dbf_record *)_rec;
474 char *p = buf;
5ffd51a5 475 char hint[ZFCP_DBF_ID_SIZE + 1];
d79a83db 476
5ffd51a5
SS		 477 memcpy(hint, r->id2, ZFCP_DBF_ID_SIZE);
478 hint[ZFCP_DBF_ID_SIZE] = 0;
d79a83db 479 zfcp_dbf_outs(&p, "tag", zfcp_rec_dbf_tags[r->id]);
5ffd51a5 480 zfcp_dbf_outs(&p, "hint", hint);
d79a83db 481 switch (r->id) {
348447e8 482 case ZFCP_REC_DBF_ID_THREAD:
348447e8
MP		 483 zfcp_dbf_out(&p, "total", "%d", r->u.thread.total);
484 zfcp_dbf_out(&p, "ready", "%d", r->u.thread.ready);
485 zfcp_dbf_out(&p, "running", "%d", r->u.thread.running);
486 break;
698ec016
MP		 487 case ZFCP_REC_DBF_ID_TARGET:
488 zfcp_dbf_out(&p, "reference", "0x%016Lx", r->u.target.ref);
489 zfcp_dbf_out(&p, "status", "0x%08x", r->u.target.status);
490 zfcp_dbf_out(&p, "erp_count", "%d", r->u.target.erp_count);
491 zfcp_dbf_out(&p, "d_id", "0x%06x", r->u.target.d_id);
492 zfcp_dbf_out(&p, "wwpn", "0x%016Lx", r->u.target.wwpn);
493 zfcp_dbf_out(&p, "fcp_lun", "0x%016Lx", r->u.target.fcp_lun);
494 break;
9467a9b3
MP		 495 case ZFCP_REC_DBF_ID_TRIGGER:
496 zfcp_dbf_out(&p, "reference", "0x%016Lx", r->u.trigger.ref);
497 zfcp_dbf_out(&p, "erp_action", "0x%016Lx", r->u.trigger.action);
498 zfcp_dbf_out(&p, "requested", "%d", r->u.trigger.want);
499 zfcp_dbf_out(&p, "executed", "%d", r->u.trigger.need);
500 zfcp_dbf_out(&p, "wwpn", "0x%016Lx", r->u.trigger.wwpn);
501 zfcp_dbf_out(&p, "fcp_lun", "0x%016Lx", r->u.trigger.fcp_lun);
502 zfcp_dbf_out(&p, "adapter_status", "0x%08x", r->u.trigger.as);
503 zfcp_dbf_out(&p, "port_status", "0x%08x", r->u.trigger.ps);
504 zfcp_dbf_out(&p, "unit_status", "0x%08x", r->u.trigger.us);
505 break;
6f4f365e
MP		 506 case ZFCP_REC_DBF_ID_ACTION:
507 zfcp_dbf_out(&p, "erp_action", "0x%016Lx", r->u.action.action);
508 zfcp_dbf_out(&p, "fsf_req", "0x%016Lx", r->u.action.fsf_req);
509 zfcp_dbf_out(&p, "status", "0x%08Lx", r->u.action.status);
510 zfcp_dbf_out(&p, "step", "0x%08Lx", r->u.action.step);
511 break;
d79a83db 512 }
b634fff7
MP		 513 p += sprintf(p, "\n");
514 return p - buf;
d79a83db
MP		 515}
516
517static struct debug_view zfcp_rec_dbf_view = {
518 "structured",
519 NULL,
520 &zfcp_dbf_view_header,
521 &zfcp_rec_dbf_view_format,
522 NULL,
523 NULL
524};
525
348447e8
MP		 526/**
527 * zfcp_rec_dbf_event_thread - trace event related to recovery thread operation
528 * @id2: identifier for event
529 * @adapter: adapter
aa0fec62 530 * This function assumes that the caller is holding erp_lock.
348447e8 531 */
5ffd51a5 532void zfcp_rec_dbf_event_thread(char *id2, struct zfcp_adapter *adapter)
348447e8 533{
d46f384a
CS		 534 struct zfcp_dbf *dbf = adapter->dbf;
535 struct zfcp_rec_dbf_record *r = &dbf->rec_dbf_buf;
348447e8
MP		 536 unsigned long flags = 0;
537 struct list_head *entry;
538 unsigned ready = 0, running = 0, total;
539
348447e8
MP		 540 list_for_each(entry, &adapter->erp_ready_head)
541 ready++;
542 list_for_each(entry, &adapter->erp_running_head)
543 running++;
544 total = adapter->erp_total_count;
348447e8 545
d46f384a 546 spin_lock_irqsave(&dbf->rec_dbf_lock, flags);
348447e8
MP		 547 memset(r, 0, sizeof(*r));
548 r->id = ZFCP_REC_DBF_ID_THREAD;
5ffd51a5 549 memcpy(r->id2, id2, ZFCP_DBF_ID_SIZE);
348447e8
MP		 550 r->u.thread.total = total;
551 r->u.thread.ready = ready;
552 r->u.thread.running = running;
d46f384a
CS		 553 debug_event(dbf->rec_dbf, 6, r, sizeof(*r));
554 spin_unlock_irqrestore(&dbf->rec_dbf_lock, flags);
348447e8
MP		 555}
556
aa0fec62
CS		 557/**
558 * zfcp_rec_dbf_event_thread - trace event related to recovery thread operation
559 * @id2: identifier for event
560 * @adapter: adapter
561 * This function assumes that the caller does not hold erp_lock.
562 */
5ffd51a5 563void zfcp_rec_dbf_event_thread_lock(char *id2, struct zfcp_adapter *adapter)
aa0fec62
CS		 564{
565 unsigned long flags;
566
567 read_lock_irqsave(&adapter->erp_lock, flags);
568 zfcp_rec_dbf_event_thread(id2, adapter);
569 read_unlock_irqrestore(&adapter->erp_lock, flags);
570}
571
5ffd51a5 572static void zfcp_rec_dbf_event_target(char *id2, void *ref,
698ec016
MP		 573 struct zfcp_adapter *adapter,
574 atomic_t *status, atomic_t *erp_count,
575 u64 wwpn, u32 d_id, u64 fcp_lun)
576{
d46f384a
CS		 577 struct zfcp_dbf *dbf = adapter->dbf;
578 struct zfcp_rec_dbf_record *r = &dbf->rec_dbf_buf;
698ec016
MP		 579 unsigned long flags;
580
d46f384a 581 spin_lock_irqsave(&dbf->rec_dbf_lock, flags);
698ec016
MP		 582 memset(r, 0, sizeof(*r));
583 r->id = ZFCP_REC_DBF_ID_TARGET;
5ffd51a5 584 memcpy(r->id2, id2, ZFCP_DBF_ID_SIZE);
1f6f7129 585 r->u.target.ref = (unsigned long)ref;
698ec016
MP		 586 r->u.target.status = atomic_read(status);
587 r->u.target.wwpn = wwpn;
588 r->u.target.d_id = d_id;
589 r->u.target.fcp_lun = fcp_lun;
590 r->u.target.erp_count = atomic_read(erp_count);
d46f384a
CS		 591 debug_event(dbf->rec_dbf, 3, r, sizeof(*r));
592 spin_unlock_irqrestore(&dbf->rec_dbf_lock, flags);
698ec016
MP		 593}
594
595/**
596 * zfcp_rec_dbf_event_adapter - trace event for adapter state change
597 * @id: identifier for trigger of state change
598 * @ref: additional reference (e.g. request)
599 * @adapter: adapter
600 */
5ffd51a5
SS		 601void zfcp_rec_dbf_event_adapter(char *id, void *ref,
602 struct zfcp_adapter *adapter)
698ec016
MP		 603{
604 zfcp_rec_dbf_event_target(id, ref, adapter, &adapter->status,
605 &adapter->erp_counter, 0, 0, 0);
606}
607
608/**
609 * zfcp_rec_dbf_event_port - trace event for port state change
610 * @id: identifier for trigger of state change
611 * @ref: additional reference (e.g. request)
612 * @port: port
613 */
5ffd51a5 614void zfcp_rec_dbf_event_port(char *id, void *ref, struct zfcp_port *port)
698ec016
MP		 615{
616 struct zfcp_adapter *adapter = port->adapter;
617
618 zfcp_rec_dbf_event_target(id, ref, adapter, &port->status,
619 &port->erp_counter, port->wwpn, port->d_id,
620 0);
621}
622
623/**
624 * zfcp_rec_dbf_event_unit - trace event for unit state change
625 * @id: identifier for trigger of state change
626 * @ref: additional reference (e.g. request)
627 * @unit: unit
628 */
5ffd51a5 629void zfcp_rec_dbf_event_unit(char *id, void *ref, struct zfcp_unit *unit)
698ec016
MP		 630{
631 struct zfcp_port *port = unit->port;
632 struct zfcp_adapter *adapter = port->adapter;
633
634 zfcp_rec_dbf_event_target(id, ref, adapter, &unit->status,
635 &unit->erp_counter, port->wwpn, port->d_id,
636 unit->fcp_lun);
637}
638
9467a9b3
MP		 639/**
640 * zfcp_rec_dbf_event_trigger - trace event for triggered error recovery
641 * @id2: identifier for error recovery trigger
642 * @ref: additional reference (e.g. request)
643 * @want: originally requested error recovery action
644 * @need: error recovery action actually initiated
645 * @action: address of error recovery action struct
646 * @adapter: adapter
647 * @port: port
648 * @unit: unit
649 */
5ffd51a5 650void zfcp_rec_dbf_event_trigger(char *id2, void *ref, u8 want, u8 need,
1f6f7129 651 void *action, struct zfcp_adapter *adapter,
9467a9b3
MP		 652 struct zfcp_port *port, struct zfcp_unit *unit)
653{
d46f384a
CS		 654 struct zfcp_dbf *dbf = adapter->dbf;
655 struct zfcp_rec_dbf_record *r = &dbf->rec_dbf_buf;
9467a9b3
MP		 656 unsigned long flags;
657
d46f384a 658 spin_lock_irqsave(&dbf->rec_dbf_lock, flags);
9467a9b3
MP		 659 memset(r, 0, sizeof(*r));
660 r->id = ZFCP_REC_DBF_ID_TRIGGER;
5ffd51a5 661 memcpy(r->id2, id2, ZFCP_DBF_ID_SIZE);
1f6f7129 662 r->u.trigger.ref = (unsigned long)ref;
9467a9b3
MP		 663 r->u.trigger.want = want;
664 r->u.trigger.need = need;
1f6f7129 665 r->u.trigger.action = (unsigned long)action;
9467a9b3
MP		 666 r->u.trigger.as = atomic_read(&adapter->status);
667 if (port) {
668 r->u.trigger.ps = atomic_read(&port->status);
669 r->u.trigger.wwpn = port->wwpn;
670 }
671 if (unit) {
672 r->u.trigger.us = atomic_read(&unit->status);
673 r->u.trigger.fcp_lun = unit->fcp_lun;
674 }
d46f384a
CS		 675 debug_event(dbf->rec_dbf, action ? 1 : 4, r, sizeof(*r));
676 spin_unlock_irqrestore(&dbf->rec_dbf_lock, flags);
9467a9b3
MP		 677}
678
6f4f365e
MP		 679/**
680 * zfcp_rec_dbf_event_action - trace event showing progress of recovery action
681 * @id2: identifier
682 * @erp_action: error recovery action struct pointer
683 */
5ffd51a5 684void zfcp_rec_dbf_event_action(char *id2, struct zfcp_erp_action *erp_action)
6f4f365e
MP		 685{
686 struct zfcp_adapter *adapter = erp_action->adapter;
d46f384a
CS		 687 struct zfcp_dbf *dbf = adapter->dbf;
688 struct zfcp_rec_dbf_record *r = &dbf->rec_dbf_buf;
6f4f365e
MP		 689 unsigned long flags;
690
d46f384a 691 spin_lock_irqsave(&dbf->rec_dbf_lock, flags);
6f4f365e
MP		 692 memset(r, 0, sizeof(*r));
693 r->id = ZFCP_REC_DBF_ID_ACTION;
5ffd51a5 694 memcpy(r->id2, id2, ZFCP_DBF_ID_SIZE);
1f6f7129 695 r->u.action.action = (unsigned long)erp_action;
6f4f365e
MP		 696 r->u.action.status = erp_action->status;
697 r->u.action.step = erp_action->step;
1f6f7129 698 r->u.action.fsf_req = (unsigned long)erp_action->fsf_req;
d46f384a
CS		 699 debug_event(dbf->rec_dbf, 5, r, sizeof(*r));
700 spin_unlock_irqrestore(&dbf->rec_dbf_lock, flags);
6f4f365e
MP		 701}
702
bfab1637
MP		 703/**
704 * zfcp_san_dbf_event_ct_request - trace event for issued CT request
705 * @fsf_req: request containing issued CT data
706 */
4d284cac 707void zfcp_san_dbf_event_ct_request(struct zfcp_fsf_req *fsf_req)
8a36e453
MS		 708{
709 struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data;
5ab944f9
SS		 710 struct zfcp_wka_port *wka_port = ct->wka_port;
711 struct zfcp_adapter *adapter = wka_port->adapter;
d46f384a 712 struct zfcp_dbf *dbf = adapter->dbf;
44cc76f2 713 struct ct_hdr *hdr = sg_virt(ct->req);
d46f384a 714 struct zfcp_san_dbf_record *r = &dbf->san_dbf_buf;
6bc473dd 715 struct zfcp_san_dbf_record_ct_request *oct = &r->u.ct_req;
d94ce6c6 716 int level = 3;
6bc473dd 717 unsigned long flags;
8a36e453 718
d46f384a 719 spin_lock_irqsave(&dbf->san_dbf_lock, flags);
6bc473dd
MP		 720 memset(r, 0, sizeof(*r));
721 strncpy(r->tag, "octc", ZFCP_DBF_TAG_SIZE);
f0216ae9 722 r->fsf_reqid = fsf_req->req_id;
6bc473dd
MP		 723 r->fsf_seqno = fsf_req->seq_no;
724 r->s_id = fc_host_port_id(adapter->scsi_host);
5ab944f9 725 r->d_id = wka_port->d_id;
6bc473dd
MP		 726 oct->cmd_req_code = hdr->cmd_rsp_code;
727 oct->revision = hdr->revision;
728 oct->gs_type = hdr->gs_type;
729 oct->gs_subtype = hdr->gs_subtype;
730 oct->options = hdr->options;
731 oct->max_res_size = hdr->max_res_size;
732 oct->len = min((int)ct->req->length - (int)sizeof(struct ct_hdr),
d94ce6c6 733 ZFCP_DBF_SAN_MAX_PAYLOAD);
d46f384a
CS		 734 debug_event(dbf->san_dbf, level, r, sizeof(*r));
735 zfcp_dbf_hexdump(dbf->san_dbf, r, sizeof(*r), level,
d94ce6c6 736 (void *)hdr + sizeof(struct ct_hdr), oct->len);
d46f384a 737 spin_unlock_irqrestore(&dbf->san_dbf_lock, flags);
8a36e453
MS		 738}
739
bfab1637
MP		 740/**
741 * zfcp_san_dbf_event_ct_response - trace event for completion of CT request
742 * @fsf_req: request containing CT response
743 */
4d284cac 744void zfcp_san_dbf_event_ct_response(struct zfcp_fsf_req *fsf_req)
8a36e453
MS		 745{
746 struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data;
5ab944f9
SS		 747 struct zfcp_wka_port *wka_port = ct->wka_port;
748 struct zfcp_adapter *adapter = wka_port->adapter;
44cc76f2 749 struct ct_hdr *hdr = sg_virt(ct->resp);
d46f384a
CS		 750 struct zfcp_dbf *dbf = adapter->dbf;
751 struct zfcp_san_dbf_record *r = &dbf->san_dbf_buf;
6bc473dd 752 struct zfcp_san_dbf_record_ct_response *rct = &r->u.ct_resp;
d94ce6c6 753 int level = 3;
6bc473dd 754 unsigned long flags;
8a36e453 755
d46f384a 756 spin_lock_irqsave(&dbf->san_dbf_lock, flags);
6bc473dd
MP		 757 memset(r, 0, sizeof(*r));
758 strncpy(r->tag, "rctc", ZFCP_DBF_TAG_SIZE);
f0216ae9 759 r->fsf_reqid = fsf_req->req_id;
6bc473dd 760 r->fsf_seqno = fsf_req->seq_no;
5ab944f9 761 r->s_id = wka_port->d_id;
6bc473dd
MP		 762 r->d_id = fc_host_port_id(adapter->scsi_host);
763 rct->cmd_rsp_code = hdr->cmd_rsp_code;
764 rct->revision = hdr->revision;
765 rct->reason_code = hdr->reason_code;
766 rct->expl = hdr->reason_code_expl;
767 rct->vendor_unique = hdr->vendor_unique;
39eb7e9a 768 rct->max_res_size = hdr->max_res_size;
6bc473dd 769 rct->len = min((int)ct->resp->length - (int)sizeof(struct ct_hdr),
d94ce6c6 770 ZFCP_DBF_SAN_MAX_PAYLOAD);
d46f384a
CS		 771 debug_event(dbf->san_dbf, level, r, sizeof(*r));
772 zfcp_dbf_hexdump(dbf->san_dbf, r, sizeof(*r), level,
d94ce6c6 773 (void *)hdr + sizeof(struct ct_hdr), rct->len);
d46f384a 774 spin_unlock_irqrestore(&dbf->san_dbf_lock, flags);
8a36e453
MS		 775}
776
92c7a83f
MP		 777static void zfcp_san_dbf_event_els(const char *tag, int level,
778 struct zfcp_fsf_req *fsf_req, u32 s_id,
779 u32 d_id, u8 ls_code, void *buffer,
780 int buflen)
8a36e453
MS		 781{
782 struct zfcp_adapter *adapter = fsf_req->adapter;
d46f384a
CS		 783 struct zfcp_dbf *dbf = adapter->dbf;
784 struct zfcp_san_dbf_record *rec = &dbf->san_dbf_buf;
8a36e453 785 unsigned long flags;
8a36e453 786
d46f384a 787 spin_lock_irqsave(&dbf->san_dbf_lock, flags);
6bc473dd 788 memset(rec, 0, sizeof(*rec));
0f65e951 789 strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
f0216ae9 790 rec->fsf_reqid = fsf_req->req_id;
0f65e951
MP		 791 rec->fsf_seqno = fsf_req->seq_no;
792 rec->s_id = s_id;
793 rec->d_id = d_id;
6bc473dd 794 rec->u.els.ls_code = ls_code;
d46f384a
CS		 795 debug_event(dbf->san_dbf, level, rec, sizeof(*rec));
796 zfcp_dbf_hexdump(dbf->san_dbf, rec, sizeof(*rec), level,
d94ce6c6 797 buffer, min(buflen, ZFCP_DBF_SAN_MAX_PAYLOAD));
d46f384a 798 spin_unlock_irqrestore(&dbf->san_dbf_lock, flags);
8a36e453
MS		 799}
800
bfab1637
MP		 801/**
802 * zfcp_san_dbf_event_els_request - trace event for issued ELS
803 * @fsf_req: request containing issued ELS
804 */
4d284cac 805void zfcp_san_dbf_event_els_request(struct zfcp_fsf_req *fsf_req)
8a36e453
MS		 806{
807 struct zfcp_send_els *els = (struct zfcp_send_els *)fsf_req->data;
808
92c7a83f
MP		 809 zfcp_san_dbf_event_els("oels", 2, fsf_req,
810 fc_host_port_id(els->adapter->scsi_host),
44cc76f2
SS		 811 els->d_id, *(u8 *) sg_virt(els->req),
812 sg_virt(els->req), els->req->length);
8a36e453
MS		 813}
814
bfab1637
MP		 815/**
816 * zfcp_san_dbf_event_els_response - trace event for completed ELS
817 * @fsf_req: request containing ELS response
818 */
4d284cac 819void zfcp_san_dbf_event_els_response(struct zfcp_fsf_req *fsf_req)
8a36e453
MS		 820{
821 struct zfcp_send_els *els = (struct zfcp_send_els *)fsf_req->data;
822
92c7a83f
MP		 823 zfcp_san_dbf_event_els("rels", 2, fsf_req, els->d_id,
824 fc_host_port_id(els->adapter->scsi_host),
44cc76f2 825 *(u8 *)sg_virt(els->req), sg_virt(els->resp),
92c7a83f 826 els->resp->length);
8a36e453
MS		 827}
828
bfab1637
MP		 829/**
830 * zfcp_san_dbf_event_incoming_els - trace event for incomig ELS
831 * @fsf_req: request containing unsolicited status buffer with incoming ELS
832 */
4d284cac 833void zfcp_san_dbf_event_incoming_els(struct zfcp_fsf_req *fsf_req)
8a36e453
MS		 834{
835 struct zfcp_adapter *adapter = fsf_req->adapter;
92c7a83f
MP		 836 struct fsf_status_read_buffer *buf =
837 (struct fsf_status_read_buffer *)fsf_req->data;
838 int length = (int)buf->length -
839 (int)((void *)&buf->payload - (void *)buf);
840
841 zfcp_san_dbf_event_els("iels", 1, fsf_req, buf->d_id,
842 fc_host_port_id(adapter->scsi_host),
c41f8cbd 843 buf->payload.data[0], (void *)buf->payload.data,
92c7a83f 844 length);
8a36e453
MS		 845}
846
92c7a83f
MP		 847static int zfcp_san_dbf_view_format(debug_info_t *id, struct debug_view *view,
848 char *out_buf, const char *in_buf)
8a36e453 849{
b634fff7 850 struct zfcp_san_dbf_record *r = (struct zfcp_san_dbf_record *)in_buf;
b634fff7 851 char *p = out_buf;
8a36e453 852
b634fff7 853 if (strncmp(r->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
8a36e453
MS		 854 return 0;
855
a9c85775 856 zfcp_dbf_tag(&p, "tag", r->tag);
b634fff7
MP		 857 zfcp_dbf_out(&p, "fsf_reqid", "0x%0Lx", r->fsf_reqid);
858 zfcp_dbf_out(&p, "fsf_seqno", "0x%08x", r->fsf_seqno);
859 zfcp_dbf_out(&p, "s_id", "0x%06x", r->s_id);
860 zfcp_dbf_out(&p, "d_id", "0x%06x", r->d_id);
861
862 if (strncmp(r->tag, "octc", ZFCP_DBF_TAG_SIZE) == 0) {
6bc473dd
MP		 863 struct zfcp_san_dbf_record_ct_request *ct = &r->u.ct_req;
864 zfcp_dbf_out(&p, "cmd_req_code", "0x%04x", ct->cmd_req_code);
865 zfcp_dbf_out(&p, "revision", "0x%02x", ct->revision);
866 zfcp_dbf_out(&p, "gs_type", "0x%02x", ct->gs_type);
867 zfcp_dbf_out(&p, "gs_subtype", "0x%02x", ct->gs_subtype);
868 zfcp_dbf_out(&p, "options", "0x%02x", ct->options);
869 zfcp_dbf_out(&p, "max_res_size", "0x%04x", ct->max_res_size);
b634fff7 870 } else if (strncmp(r->tag, "rctc", ZFCP_DBF_TAG_SIZE) == 0) {
6bc473dd
MP		 871 struct zfcp_san_dbf_record_ct_response *ct = &r->u.ct_resp;
872 zfcp_dbf_out(&p, "cmd_rsp_code", "0x%04x", ct->cmd_rsp_code);
873 zfcp_dbf_out(&p, "revision", "0x%02x", ct->revision);
874 zfcp_dbf_out(&p, "reason_code", "0x%02x", ct->reason_code);
875 zfcp_dbf_out(&p, "reason_code_expl", "0x%02x", ct->expl);
876 zfcp_dbf_out(&p, "vendor_unique", "0x%02x", ct->vendor_unique);
39eb7e9a 877 zfcp_dbf_out(&p, "max_res_size", "0x%04x", ct->max_res_size);
b634fff7
MP		 878 } else if (strncmp(r->tag, "oels", ZFCP_DBF_TAG_SIZE) == 0 ||
879 strncmp(r->tag, "rels", ZFCP_DBF_TAG_SIZE) == 0 ||
880 strncmp(r->tag, "iels", ZFCP_DBF_TAG_SIZE) == 0) {
6bc473dd
MP		 881 struct zfcp_san_dbf_record_els *els = &r->u.els;
882 zfcp_dbf_out(&p, "ls_code", "0x%02x", els->ls_code);
8a36e453 883 }
b634fff7 884 return p - out_buf;
8a36e453
MS		 885}
886
2b67fc46 887static struct debug_view zfcp_san_dbf_view = {
8a36e453
MS		 888 "structured",
889 NULL,
890 &zfcp_dbf_view_header,
891 &zfcp_san_dbf_view_format,
892 NULL,
893 NULL
894};
895
dcd20e23
CS		 896void _zfcp_scsi_dbf_event(const char *tag, const char *tag2, int level,
897 struct zfcp_dbf *dbf, struct scsi_cmnd *scsi_cmnd,
898 struct zfcp_fsf_req *fsf_req,
899 unsigned long old_req_id)
8a36e453 900{
d46f384a 901 struct zfcp_scsi_dbf_record *rec = &dbf->scsi_dbf_buf;
8a36e453
MS		 902 struct zfcp_dbf_dump *dump = (struct zfcp_dbf_dump *)rec;
903 unsigned long flags;
904 struct fcp_rsp_iu *fcp_rsp;
905 char *fcp_rsp_info = NULL, *fcp_sns_info = NULL;
906 int offset = 0, buflen = 0;
907
d46f384a 908 spin_lock_irqsave(&dbf->scsi_dbf_lock, flags);
8a36e453 909 do {
6bc473dd 910 memset(rec, 0, sizeof(*rec));
8a36e453
MS		 911 if (offset == 0) {
912 strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
913 strncpy(rec->tag2, tag2, ZFCP_DBF_TAG_SIZE);
ed829ad6
MS		 914 if (scsi_cmnd != NULL) {
915 if (scsi_cmnd->device) {
916 rec->scsi_id = scsi_cmnd->device->id;
917 rec->scsi_lun = scsi_cmnd->device->lun;
918 }
919 rec->scsi_result = scsi_cmnd->result;
920 rec->scsi_cmnd = (unsigned long)scsi_cmnd;
921 rec->scsi_serial = scsi_cmnd->serial_number;
64a87b24 922 memcpy(rec->scsi_opcode, scsi_cmnd->cmnd,
ed829ad6
MS		 923 min((int)scsi_cmnd->cmd_len,
924 ZFCP_DBF_SCSI_OPCODE));
925 rec->scsi_retries = scsi_cmnd->retries;
926 rec->scsi_allowed = scsi_cmnd->allowed;
8a36e453 927 }
8a36e453
MS		 928 if (fsf_req != NULL) {
929 fcp_rsp = (struct fcp_rsp_iu *)
930 &(fsf_req->qtcb->bottom.io.fcp_rsp);
f76af7d7 931 fcp_rsp_info = (unsigned char *) &fcp_rsp[1];
8a36e453
MS		 932 fcp_sns_info =
933 zfcp_get_fcp_sns_info_ptr(fcp_rsp);
934
6bc473dd
MP		 935 rec->rsp_validity = fcp_rsp->validity.value;
936 rec->rsp_scsi_status = fcp_rsp->scsi_status;
937 rec->rsp_resid = fcp_rsp->fcp_resid;
8a36e453 938 if (fcp_rsp->validity.bits.fcp_rsp_len_valid)
6bc473dd 939 rec->rsp_code = *(fcp_rsp_info + 3);
8a36e453
MS		 940 if (fcp_rsp->validity.bits.fcp_sns_len_valid) {
941 buflen = min((int)fcp_rsp->fcp_sns_len,
942 ZFCP_DBF_SCSI_MAX_FCP_SNS_INFO);
6bc473dd
MP		 943 rec->sns_info_len = buflen;
944 memcpy(rec->sns_info, fcp_sns_info,
8a36e453
MS		 945 min(buflen,
946 ZFCP_DBF_SCSI_FCP_SNS_INFO));
947 offset += min(buflen,
948 ZFCP_DBF_SCSI_FCP_SNS_INFO);
949 }
950
f0216ae9 951 rec->fsf_reqid = fsf_req->req_id;
8a36e453
MS		 952 rec->fsf_seqno = fsf_req->seq_no;
953 rec->fsf_issued = fsf_req->issued;
954 }
6bc473dd 955 rec->old_fsf_reqid = old_req_id;
8a36e453
MS		 956 } else {
957 strncpy(dump->tag, "dump", ZFCP_DBF_TAG_SIZE);
958 dump->total_size = buflen;
959 dump->offset = offset;
960 dump->size = min(buflen - offset,
961 (int)sizeof(struct
962 zfcp_scsi_dbf_record) -
963 (int)sizeof(struct zfcp_dbf_dump));
964 memcpy(dump->data, fcp_sns_info + offset, dump->size);
965 offset += dump->size;
966 }
d46f384a 967 debug_event(dbf->scsi_dbf, level, rec, sizeof(*rec));
8a36e453 968 } while (offset < buflen);
d46f384a 969 spin_unlock_irqrestore(&dbf->scsi_dbf_lock, flags);
8a36e453
MS		 970}
971
92c7a83f
MP		 972static int zfcp_scsi_dbf_view_format(debug_info_t *id, struct debug_view *view,
973 char *out_buf, const char *in_buf)
8a36e453 974{
b634fff7 975 struct zfcp_scsi_dbf_record *r = (struct zfcp_scsi_dbf_record *)in_buf;
8fc5af16 976 struct timespec t;
b634fff7 977 char *p = out_buf;
8a36e453 978
b634fff7 979 if (strncmp(r->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
8a36e453
MS		 980 return 0;
981
a9c85775
MP		 982 zfcp_dbf_tag(&p, "tag", r->tag);
983 zfcp_dbf_tag(&p, "tag2", r->tag2);
b634fff7
MP		 984 zfcp_dbf_out(&p, "scsi_id", "0x%08x", r->scsi_id);
985 zfcp_dbf_out(&p, "scsi_lun", "0x%08x", r->scsi_lun);
986 zfcp_dbf_out(&p, "scsi_result", "0x%08x", r->scsi_result);
987 zfcp_dbf_out(&p, "scsi_cmnd", "0x%0Lx", r->scsi_cmnd);
988 zfcp_dbf_out(&p, "scsi_serial", "0x%016Lx", r->scsi_serial);
df29f4ac
MP		 989 zfcp_dbf_outd(&p, "scsi_opcode", r->scsi_opcode, ZFCP_DBF_SCSI_OPCODE,
990 0, ZFCP_DBF_SCSI_OPCODE);
b634fff7
MP		 991 zfcp_dbf_out(&p, "scsi_retries", "0x%02x", r->scsi_retries);
992 zfcp_dbf_out(&p, "scsi_allowed", "0x%02x", r->scsi_allowed);
993 if (strncmp(r->tag, "abrt", ZFCP_DBF_TAG_SIZE) == 0)
6bc473dd 994 zfcp_dbf_out(&p, "old_fsf_reqid", "0x%0Lx", r->old_fsf_reqid);
b634fff7
MP		 995 zfcp_dbf_out(&p, "fsf_reqid", "0x%0Lx", r->fsf_reqid);
996 zfcp_dbf_out(&p, "fsf_seqno", "0x%08x", r->fsf_seqno);
997 zfcp_dbf_timestamp(r->fsf_issued, &t);
998 zfcp_dbf_out(&p, "fsf_issued", "%011lu:%06lu", t.tv_sec, t.tv_nsec);
999
1000 if (strncmp(r->tag, "rslt", ZFCP_DBF_TAG_SIZE) == 0) {
6bc473dd
MP		 1001 zfcp_dbf_out(&p, "fcp_rsp_validity", "0x%02x", r->rsp_validity);
1002 zfcp_dbf_out(&p, "fcp_rsp_scsi_status", "0x%02x",
1003 r->rsp_scsi_status);
1004 zfcp_dbf_out(&p, "fcp_rsp_resid", "0x%08x", r->rsp_resid);
1005 zfcp_dbf_out(&p, "fcp_rsp_code", "0x%08x", r->rsp_code);
1006 zfcp_dbf_out(&p, "fcp_sns_info_len", "0x%08x", r->sns_info_len);
1007 zfcp_dbf_outd(&p, "fcp_sns_info", r->sns_info,
1008 min((int)r->sns_info_len,
df29f4ac 1009 ZFCP_DBF_SCSI_FCP_SNS_INFO), 0,
6bc473dd 1010 r->sns_info_len);
8a36e453 1011 }
b634fff7
MP		 1012 p += sprintf(p, "\n");
1013 return p - out_buf;
8a36e453
MS		 1014}
1015
2b67fc46 1016static struct debug_view zfcp_scsi_dbf_view = {
8a36e453
MS		 1017 "structured",
1018 NULL,
1019 &zfcp_dbf_view_header,
1020 &zfcp_scsi_dbf_view_format,
1021 NULL,
1022 NULL
1023};
1024
d46f384a
CS		 1025static debug_info_t *zfcp_dbf_reg(const char *name, int level,
1026 struct debug_view *view, int size)
1027{
1028 struct debug_info *d;
1029
1030 d = debug_register(name, dbfsize, level, size);
1031 if (!d)
1032 return NULL;
1033
1034 debug_register_view(d, &debug_hex_ascii_view);
1035 debug_register_view(d, view);
1036 debug_set_level(d, level);
1037
1038 return d;
1039}
1040
8a36e453
MS		 1041/**
1042 * zfcp_adapter_debug_register - registers debug feature for an adapter
1043 * @adapter: pointer to adapter for which debug features should be registered
1044 * return: -ENOMEM on error, 0 otherwise
1045 */
1046int zfcp_adapter_debug_register(struct zfcp_adapter *adapter)
1047{
1048 char dbf_name[DEBUG_MAX_NAME_LEN];
d46f384a
CS		 1049 struct zfcp_dbf *dbf;
1050
1051 dbf = kmalloc(sizeof(struct zfcp_dbf), GFP_KERNEL);
1052 if (!dbf)
1053 return -ENOMEM;
1054
1055 spin_lock_init(&dbf->hba_dbf_lock);
1056 spin_lock_init(&dbf->san_dbf_lock);
1057 spin_lock_init(&dbf->scsi_dbf_lock);
1058 spin_lock_init(&dbf->rec_dbf_lock);
8a36e453 1059
d79a83db 1060 /* debug feature area which records recovery activity */
b225cf9b 1061 sprintf(dbf_name, "zfcp_%s_rec", dev_name(&adapter->ccw_device->dev));
d46f384a
CS		 1062 dbf->rec_dbf = zfcp_dbf_reg(dbf_name, 3, &zfcp_rec_dbf_view,
1063 sizeof(struct zfcp_rec_dbf_record));
1064 if (!dbf->rec_dbf)
1065 goto fail_rec;
d79a83db 1066
8a36e453 1067 /* debug feature area which records HBA (FSF and QDIO) conditions */
b225cf9b 1068 sprintf(dbf_name, "zfcp_%s_hba", dev_name(&adapter->ccw_device->dev));
d46f384a
CS		 1069 dbf->hba_dbf = zfcp_dbf_reg(dbf_name, 3, &zfcp_hba_dbf_view,
1070 sizeof(struct zfcp_hba_dbf_record));
1071 if (!dbf->hba_dbf)
1072 goto fail_hba;
8a36e453
MS		 1073
1074 /* debug feature area which records SAN command failures and recovery */
b225cf9b 1075 sprintf(dbf_name, "zfcp_%s_san", dev_name(&adapter->ccw_device->dev));
d46f384a
CS		 1076 dbf->san_dbf = zfcp_dbf_reg(dbf_name, 6, &zfcp_san_dbf_view,
1077 sizeof(struct zfcp_san_dbf_record));
1078 if (!dbf->san_dbf)
1079 goto fail_san;
8a36e453
MS		 1080
1081 /* debug feature area which records SCSI command failures and recovery */
b225cf9b 1082 sprintf(dbf_name, "zfcp_%s_scsi", dev_name(&adapter->ccw_device->dev));
d46f384a
CS		 1083 dbf->scsi_dbf = zfcp_dbf_reg(dbf_name, 3, &zfcp_scsi_dbf_view,
1084 sizeof(struct zfcp_scsi_dbf_record));
1085 if (!dbf->scsi_dbf)
1086 goto fail_scsi;
8a36e453 1087
d46f384a 1088 adapter->dbf = dbf;
8a36e453
MS		 1089 return 0;
1090
d46f384a
CS		 1091fail_scsi:
1092 debug_unregister(dbf->san_dbf);
1093fail_san:
1094 debug_unregister(dbf->hba_dbf);
1095fail_hba:
1096 debug_unregister(dbf->rec_dbf);
1097fail_rec:
1098 kfree(dbf);
8a36e453
MS		 1099 return -ENOMEM;
1100}
1101
1102/**
1103 * zfcp_adapter_debug_unregister - unregisters debug feature for an adapter
1104 * @adapter: pointer to adapter for which debug features should be unregistered
1105 */
1106void zfcp_adapter_debug_unregister(struct zfcp_adapter *adapter)
1107{
d46f384a
CS		 1108 debug_unregister(adapter->dbf->scsi_dbf);
1109 debug_unregister(adapter->dbf->san_dbf);
1110 debug_unregister(adapter->dbf->hba_dbf);
1111 debug_unregister(adapter->dbf->rec_dbf);
1112 kfree(adapter->dbf);
1113 adapter->dbf = NULL;
8a36e453 1114}
Linux 6.x block layer and io_uring tree(s)