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HID: split picolcd's operation_mode sysfs attribute
[mirror_ubuntu-bionic-kernel.git] / drivers / s390 / scsi / zfcp_dbf.c
1 /*
2 * zfcp device driver
3 *
4 * Debug traces for zfcp.
5 *
6 * Copyright IBM Corporation 2002, 2009
7 */
8
9 #define KMSG_COMPONENT "zfcp"
10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11
12 #include <linux/ctype.h>
13 #include <asm/debug.h>
14 #include "zfcp_dbf.h"
15 #include "zfcp_ext.h"
16 #include "zfcp_fc.h"
17
18 static u32 dbfsize = 4;
19
20 module_param(dbfsize, uint, 0400);
21 MODULE_PARM_DESC(dbfsize,
22 "number of pages for each debug feature area (default 4)");
23
24 static void zfcp_dbf_hexdump(debug_info_t *dbf, void *to, int to_len,
25 int level, char *from, int from_len)
26 {
27 int offset;
28 struct zfcp_dbf_dump *dump = to;
29 int room = to_len - sizeof(*dump);
30
31 for (offset = 0; offset < from_len; offset += dump->size) {
32 memset(to, 0, to_len);
33 strncpy(dump->tag, "dump", ZFCP_DBF_TAG_SIZE);
34 dump->total_size = from_len;
35 dump->offset = offset;
36 dump->size = min(from_len - offset, room);
37 memcpy(dump->data, from + offset, dump->size);
38 debug_event(dbf, level, dump, dump->size + sizeof(*dump));
39 }
40 }
41
42 static void zfcp_dbf_tag(char **p, const char *label, const char *tag)
43 {
44 int i;
45
46 *p += sprintf(*p, "%-24s", label);
47 for (i = 0; i < ZFCP_DBF_TAG_SIZE; i++)
48 *p += sprintf(*p, "%c", tag[i]);
49 *p += sprintf(*p, "\n");
50 }
51
52 static void zfcp_dbf_outs(char **buf, const char *s1, const char *s2)
53 {
54 *buf += sprintf(*buf, "%-24s%s\n", s1, s2);
55 }
56
57 static void zfcp_dbf_out(char **buf, const char *s, const char *format, ...)
58 {
59 va_list arg;
60
61 *buf += sprintf(*buf, "%-24s", s);
62 va_start(arg, format);
63 *buf += vsprintf(*buf, format, arg);
64 va_end(arg);
65 *buf += sprintf(*buf, "\n");
66 }
67
68 static void zfcp_dbf_outd(char **p, const char *label, char *buffer,
69 int buflen, int offset, int total_size)
70 {
71 if (!offset)
72 *p += sprintf(*p, "%-24s ", label);
73 while (buflen--) {
74 if (offset > 0) {
75 if ((offset % 32) == 0)
76 *p += sprintf(*p, "\n%-24c ", ' ');
77 else if ((offset % 4) == 0)
78 *p += sprintf(*p, " ");
79 }
80 *p += sprintf(*p, "%02x", *buffer++);
81 if (++offset == total_size) {
82 *p += sprintf(*p, "\n");
83 break;
84 }
85 }
86 if (!total_size)
87 *p += sprintf(*p, "\n");
88 }
89
90 static int zfcp_dbf_view_header(debug_info_t *id, struct debug_view *view,
91 int area, debug_entry_t *entry, char *out_buf)
92 {
93 struct zfcp_dbf_dump *dump = (struct zfcp_dbf_dump *)DEBUG_DATA(entry);
94 struct timespec t;
95 char *p = out_buf;
96
97 if (strncmp(dump->tag, "dump", ZFCP_DBF_TAG_SIZE) != 0) {
98 stck_to_timespec(entry->id.stck, &t);
99 zfcp_dbf_out(&p, "timestamp", "%011lu:%06lu",
100 t.tv_sec, t.tv_nsec);
101 zfcp_dbf_out(&p, "cpu", "%02i", entry->id.fields.cpuid);
102 } else {
103 zfcp_dbf_outd(&p, "", dump->data, dump->size, dump->offset,
104 dump->total_size);
105 if ((dump->offset + dump->size) == dump->total_size)
106 p += sprintf(p, "\n");
107 }
108 return p - out_buf;
109 }
110
111 void _zfcp_dbf_hba_fsf_response(const char *tag2, int level,
112 struct zfcp_fsf_req *fsf_req,
113 struct zfcp_dbf *dbf)
114 {
115 struct fsf_qtcb *qtcb = fsf_req->qtcb;
116 union fsf_prot_status_qual *prot_status_qual =
117 &qtcb->prefix.prot_status_qual;
118 union fsf_status_qual *fsf_status_qual = &qtcb->header.fsf_status_qual;
119 struct scsi_cmnd *scsi_cmnd;
120 struct zfcp_port *port;
121 struct zfcp_unit *unit;
122 struct zfcp_send_els *send_els;
123 struct zfcp_dbf_hba_record *rec = &dbf->hba_buf;
124 struct zfcp_dbf_hba_record_response *response = &rec->u.response;
125 unsigned long flags;
126
127 spin_lock_irqsave(&dbf->hba_lock, flags);
128 memset(rec, 0, sizeof(*rec));
129 strncpy(rec->tag, "resp", ZFCP_DBF_TAG_SIZE);
130 strncpy(rec->tag2, tag2, ZFCP_DBF_TAG_SIZE);
131
132 response->fsf_command = fsf_req->fsf_command;
133 response->fsf_reqid = fsf_req->req_id;
134 response->fsf_seqno = fsf_req->seq_no;
135 response->fsf_issued = fsf_req->issued;
136 response->fsf_prot_status = qtcb->prefix.prot_status;
137 response->fsf_status = qtcb->header.fsf_status;
138 memcpy(response->fsf_prot_status_qual,
139 prot_status_qual, FSF_PROT_STATUS_QUAL_SIZE);
140 memcpy(response->fsf_status_qual,
141 fsf_status_qual, FSF_STATUS_QUALIFIER_SIZE);
142 response->fsf_req_status = fsf_req->status;
143 response->sbal_first = fsf_req->qdio_req.sbal_first;
144 response->sbal_last = fsf_req->qdio_req.sbal_last;
145 response->sbal_response = fsf_req->qdio_req.sbal_response;
146 response->pool = fsf_req->pool != NULL;
147 response->erp_action = (unsigned long)fsf_req->erp_action;
148
149 switch (fsf_req->fsf_command) {
150 case FSF_QTCB_FCP_CMND:
151 if (fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
152 break;
153 scsi_cmnd = (struct scsi_cmnd *)fsf_req->data;
154 if (scsi_cmnd) {
155 response->u.fcp.cmnd = (unsigned long)scsi_cmnd;
156 response->u.fcp.serial = scsi_cmnd->serial_number;
157 }
158 break;
159
160 case FSF_QTCB_OPEN_PORT_WITH_DID:
161 case FSF_QTCB_CLOSE_PORT:
162 case FSF_QTCB_CLOSE_PHYSICAL_PORT:
163 port = (struct zfcp_port *)fsf_req->data;
164 response->u.port.wwpn = port->wwpn;
165 response->u.port.d_id = port->d_id;
166 response->u.port.port_handle = qtcb->header.port_handle;
167 break;
168
169 case FSF_QTCB_OPEN_LUN:
170 case FSF_QTCB_CLOSE_LUN:
171 unit = (struct zfcp_unit *)fsf_req->data;
172 port = unit->port;
173 response->u.unit.wwpn = port->wwpn;
174 response->u.unit.fcp_lun = unit->fcp_lun;
175 response->u.unit.port_handle = qtcb->header.port_handle;
176 response->u.unit.lun_handle = qtcb->header.lun_handle;
177 break;
178
179 case FSF_QTCB_SEND_ELS:
180 send_els = (struct zfcp_send_els *)fsf_req->data;
181 response->u.els.d_id = ntoh24(qtcb->bottom.support.d_id);
182 break;
183
184 case FSF_QTCB_ABORT_FCP_CMND:
185 case FSF_QTCB_SEND_GENERIC:
186 case FSF_QTCB_EXCHANGE_CONFIG_DATA:
187 case FSF_QTCB_EXCHANGE_PORT_DATA:
188 case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
189 case FSF_QTCB_UPLOAD_CONTROL_FILE:
190 break;
191 }
192
193 debug_event(dbf->hba, level, rec, sizeof(*rec));
194
195 /* have fcp channel microcode fixed to use as little as possible */
196 if (fsf_req->fsf_command != FSF_QTCB_FCP_CMND) {
197 /* adjust length skipping trailing zeros */
198 char *buf = (char *)qtcb + qtcb->header.log_start;
199 int len = qtcb->header.log_length;
200 for (; len && !buf[len - 1]; len--);
201 zfcp_dbf_hexdump(dbf->hba, rec, sizeof(*rec), level, buf,
202 len);
203 }
204
205 spin_unlock_irqrestore(&dbf->hba_lock, flags);
206 }
207
208 void _zfcp_dbf_hba_fsf_unsol(const char *tag, int level, struct zfcp_dbf *dbf,
209 struct fsf_status_read_buffer *status_buffer)
210 {
211 struct zfcp_dbf_hba_record *rec = &dbf->hba_buf;
212 unsigned long flags;
213
214 spin_lock_irqsave(&dbf->hba_lock, flags);
215 memset(rec, 0, sizeof(*rec));
216 strncpy(rec->tag, "stat", ZFCP_DBF_TAG_SIZE);
217 strncpy(rec->tag2, tag, ZFCP_DBF_TAG_SIZE);
218
219 rec->u.status.failed = atomic_read(&dbf->adapter->stat_miss);
220 if (status_buffer != NULL) {
221 rec->u.status.status_type = status_buffer->status_type;
222 rec->u.status.status_subtype = status_buffer->status_subtype;
223 memcpy(&rec->u.status.queue_designator,
224 &status_buffer->queue_designator,
225 sizeof(struct fsf_queue_designator));
226
227 switch (status_buffer->status_type) {
228 case FSF_STATUS_READ_SENSE_DATA_AVAIL:
229 rec->u.status.payload_size =
230 ZFCP_DBF_UNSOL_PAYLOAD_SENSE_DATA_AVAIL;
231 break;
232
233 case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
234 rec->u.status.payload_size =
235 ZFCP_DBF_UNSOL_PAYLOAD_BIT_ERROR_THRESHOLD;
236 break;
237
238 case FSF_STATUS_READ_LINK_DOWN:
239 switch (status_buffer->status_subtype) {
240 case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
241 case FSF_STATUS_READ_SUB_FDISC_FAILED:
242 rec->u.status.payload_size =
243 sizeof(struct fsf_link_down_info);
244 }
245 break;
246
247 case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
248 rec->u.status.payload_size =
249 ZFCP_DBF_UNSOL_PAYLOAD_FEATURE_UPDATE_ALERT;
250 break;
251 }
252 memcpy(&rec->u.status.payload,
253 &status_buffer->payload, rec->u.status.payload_size);
254 }
255
256 debug_event(dbf->hba, level, rec, sizeof(*rec));
257 spin_unlock_irqrestore(&dbf->hba_lock, flags);
258 }
259
260 /**
261 * zfcp_dbf_hba_qdio - trace event for QDIO related failure
262 * @qdio: qdio structure affected by this QDIO related event
263 * @qdio_error: as passed by qdio module
264 * @sbal_index: first buffer with error condition, as passed by qdio module
265 * @sbal_count: number of buffers affected, as passed by qdio module
266 */
267 void zfcp_dbf_hba_qdio(struct zfcp_dbf *dbf, unsigned int qdio_error,
268 int sbal_index, int sbal_count)
269 {
270 struct zfcp_dbf_hba_record *r = &dbf->hba_buf;
271 unsigned long flags;
272
273 spin_lock_irqsave(&dbf->hba_lock, flags);
274 memset(r, 0, sizeof(*r));
275 strncpy(r->tag, "qdio", ZFCP_DBF_TAG_SIZE);
276 r->u.qdio.qdio_error = qdio_error;
277 r->u.qdio.sbal_index = sbal_index;
278 r->u.qdio.sbal_count = sbal_count;
279 debug_event(dbf->hba, 0, r, sizeof(*r));
280 spin_unlock_irqrestore(&dbf->hba_lock, flags);
281 }
282
283 /**
284 * zfcp_dbf_hba_berr - trace event for bit error threshold
285 * @dbf: dbf structure affected by this QDIO related event
286 * @req: fsf request
287 */
288 void zfcp_dbf_hba_berr(struct zfcp_dbf *dbf, struct zfcp_fsf_req *req)
289 {
290 struct zfcp_dbf_hba_record *r = &dbf->hba_buf;
291 struct fsf_status_read_buffer *sr_buf = req->data;
292 struct fsf_bit_error_payload *err = &sr_buf->payload.bit_error;
293 unsigned long flags;
294
295 spin_lock_irqsave(&dbf->hba_lock, flags);
296 memset(r, 0, sizeof(*r));
297 strncpy(r->tag, "berr", ZFCP_DBF_TAG_SIZE);
298 memcpy(&r->u.berr, err, sizeof(struct fsf_bit_error_payload));
299 debug_event(dbf->hba, 0, r, sizeof(*r));
300 spin_unlock_irqrestore(&dbf->hba_lock, flags);
301 }
302 static void zfcp_dbf_hba_view_response(char **p,
303 struct zfcp_dbf_hba_record_response *r)
304 {
305 struct timespec t;
306
307 zfcp_dbf_out(p, "fsf_command", "0x%08x", r->fsf_command);
308 zfcp_dbf_out(p, "fsf_reqid", "0x%0Lx", r->fsf_reqid);
309 zfcp_dbf_out(p, "fsf_seqno", "0x%08x", r->fsf_seqno);
310 stck_to_timespec(r->fsf_issued, &t);
311 zfcp_dbf_out(p, "fsf_issued", "%011lu:%06lu", t.tv_sec, t.tv_nsec);
312 zfcp_dbf_out(p, "fsf_prot_status", "0x%08x", r->fsf_prot_status);
313 zfcp_dbf_out(p, "fsf_status", "0x%08x", r->fsf_status);
314 zfcp_dbf_outd(p, "fsf_prot_status_qual", r->fsf_prot_status_qual,
315 FSF_PROT_STATUS_QUAL_SIZE, 0, FSF_PROT_STATUS_QUAL_SIZE);
316 zfcp_dbf_outd(p, "fsf_status_qual", r->fsf_status_qual,
317 FSF_STATUS_QUALIFIER_SIZE, 0, FSF_STATUS_QUALIFIER_SIZE);
318 zfcp_dbf_out(p, "fsf_req_status", "0x%08x", r->fsf_req_status);
319 zfcp_dbf_out(p, "sbal_first", "0x%02x", r->sbal_first);
320 zfcp_dbf_out(p, "sbal_last", "0x%02x", r->sbal_last);
321 zfcp_dbf_out(p, "sbal_response", "0x%02x", r->sbal_response);
322 zfcp_dbf_out(p, "pool", "0x%02x", r->pool);
323
324 switch (r->fsf_command) {
325 case FSF_QTCB_FCP_CMND:
326 if (r->fsf_req_status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
327 break;
328 zfcp_dbf_out(p, "scsi_cmnd", "0x%0Lx", r->u.fcp.cmnd);
329 zfcp_dbf_out(p, "scsi_serial", "0x%016Lx", r->u.fcp.serial);
330 *p += sprintf(*p, "\n");
331 break;
332
333 case FSF_QTCB_OPEN_PORT_WITH_DID:
334 case FSF_QTCB_CLOSE_PORT:
335 case FSF_QTCB_CLOSE_PHYSICAL_PORT:
336 zfcp_dbf_out(p, "wwpn", "0x%016Lx", r->u.port.wwpn);
337 zfcp_dbf_out(p, "d_id", "0x%06x", r->u.port.d_id);
338 zfcp_dbf_out(p, "port_handle", "0x%08x", r->u.port.port_handle);
339 break;
340
341 case FSF_QTCB_OPEN_LUN:
342 case FSF_QTCB_CLOSE_LUN:
343 zfcp_dbf_out(p, "wwpn", "0x%016Lx", r->u.unit.wwpn);
344 zfcp_dbf_out(p, "fcp_lun", "0x%016Lx", r->u.unit.fcp_lun);
345 zfcp_dbf_out(p, "port_handle", "0x%08x", r->u.unit.port_handle);
346 zfcp_dbf_out(p, "lun_handle", "0x%08x", r->u.unit.lun_handle);
347 break;
348
349 case FSF_QTCB_SEND_ELS:
350 zfcp_dbf_out(p, "d_id", "0x%06x", r->u.els.d_id);
351 break;
352
353 case FSF_QTCB_ABORT_FCP_CMND:
354 case FSF_QTCB_SEND_GENERIC:
355 case FSF_QTCB_EXCHANGE_CONFIG_DATA:
356 case FSF_QTCB_EXCHANGE_PORT_DATA:
357 case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
358 case FSF_QTCB_UPLOAD_CONTROL_FILE:
359 break;
360 }
361 }
362
363 static void zfcp_dbf_hba_view_status(char **p,
364 struct zfcp_dbf_hba_record_status *r)
365 {
366 zfcp_dbf_out(p, "failed", "0x%02x", r->failed);
367 zfcp_dbf_out(p, "status_type", "0x%08x", r->status_type);
368 zfcp_dbf_out(p, "status_subtype", "0x%08x", r->status_subtype);
369 zfcp_dbf_outd(p, "queue_designator", (char *)&r->queue_designator,
370 sizeof(struct fsf_queue_designator), 0,
371 sizeof(struct fsf_queue_designator));
372 zfcp_dbf_outd(p, "payload", (char *)&r->payload, r->payload_size, 0,
373 r->payload_size);
374 }
375
376 static void zfcp_dbf_hba_view_qdio(char **p, struct zfcp_dbf_hba_record_qdio *r)
377 {
378 zfcp_dbf_out(p, "qdio_error", "0x%08x", r->qdio_error);
379 zfcp_dbf_out(p, "sbal_index", "0x%02x", r->sbal_index);
380 zfcp_dbf_out(p, "sbal_count", "0x%02x", r->sbal_count);
381 }
382
383 static void zfcp_dbf_hba_view_berr(char **p, struct fsf_bit_error_payload *r)
384 {
385 zfcp_dbf_out(p, "link_failures", "%d", r->link_failure_error_count);
386 zfcp_dbf_out(p, "loss_of_sync_err", "%d", r->loss_of_sync_error_count);
387 zfcp_dbf_out(p, "loss_of_sig_err", "%d", r->loss_of_signal_error_count);
388 zfcp_dbf_out(p, "prim_seq_err", "%d",
389 r->primitive_sequence_error_count);
390 zfcp_dbf_out(p, "inval_trans_word_err", "%d",
391 r->invalid_transmission_word_error_count);
392 zfcp_dbf_out(p, "CRC_errors", "%d", r->crc_error_count);
393 zfcp_dbf_out(p, "prim_seq_event_to", "%d",
394 r->primitive_sequence_event_timeout_count);
395 zfcp_dbf_out(p, "elast_buf_overrun_err", "%d",
396 r->elastic_buffer_overrun_error_count);
397 zfcp_dbf_out(p, "adv_rec_buf2buf_cred", "%d",
398 r->advertised_receive_b2b_credit);
399 zfcp_dbf_out(p, "curr_rec_buf2buf_cred", "%d",
400 r->current_receive_b2b_credit);
401 zfcp_dbf_out(p, "adv_trans_buf2buf_cred", "%d",
402 r->advertised_transmit_b2b_credit);
403 zfcp_dbf_out(p, "curr_trans_buf2buf_cred", "%d",
404 r->current_transmit_b2b_credit);
405 }
406
407 static int zfcp_dbf_hba_view_format(debug_info_t *id, struct debug_view *view,
408 char *out_buf, const char *in_buf)
409 {
410 struct zfcp_dbf_hba_record *r = (struct zfcp_dbf_hba_record *)in_buf;
411 char *p = out_buf;
412
413 if (strncmp(r->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
414 return 0;
415
416 zfcp_dbf_tag(&p, "tag", r->tag);
417 if (isalpha(r->tag2[0]))
418 zfcp_dbf_tag(&p, "tag2", r->tag2);
419
420 if (strncmp(r->tag, "resp", ZFCP_DBF_TAG_SIZE) == 0)
421 zfcp_dbf_hba_view_response(&p, &r->u.response);
422 else if (strncmp(r->tag, "stat", ZFCP_DBF_TAG_SIZE) == 0)
423 zfcp_dbf_hba_view_status(&p, &r->u.status);
424 else if (strncmp(r->tag, "qdio", ZFCP_DBF_TAG_SIZE) == 0)
425 zfcp_dbf_hba_view_qdio(&p, &r->u.qdio);
426 else if (strncmp(r->tag, "berr", ZFCP_DBF_TAG_SIZE) == 0)
427 zfcp_dbf_hba_view_berr(&p, &r->u.berr);
428
429 if (strncmp(r->tag, "resp", ZFCP_DBF_TAG_SIZE) != 0)
430 p += sprintf(p, "\n");
431 return p - out_buf;
432 }
433
434 static struct debug_view zfcp_dbf_hba_view = {
435 .name = "structured",
436 .header_proc = zfcp_dbf_view_header,
437 .format_proc = zfcp_dbf_hba_view_format,
438 };
439
440 static const char *zfcp_dbf_rec_tags[] = {
441 [ZFCP_REC_DBF_ID_THREAD] = "thread",
442 [ZFCP_REC_DBF_ID_TARGET] = "target",
443 [ZFCP_REC_DBF_ID_TRIGGER] = "trigger",
444 [ZFCP_REC_DBF_ID_ACTION] = "action",
445 };
446
447 static int zfcp_dbf_rec_view_format(debug_info_t *id, struct debug_view *view,
448 char *buf, const char *_rec)
449 {
450 struct zfcp_dbf_rec_record *r = (struct zfcp_dbf_rec_record *)_rec;
451 char *p = buf;
452 char hint[ZFCP_DBF_ID_SIZE + 1];
453
454 memcpy(hint, r->id2, ZFCP_DBF_ID_SIZE);
455 hint[ZFCP_DBF_ID_SIZE] = 0;
456 zfcp_dbf_outs(&p, "tag", zfcp_dbf_rec_tags[r->id]);
457 zfcp_dbf_outs(&p, "hint", hint);
458 switch (r->id) {
459 case ZFCP_REC_DBF_ID_THREAD:
460 zfcp_dbf_out(&p, "total", "%d", r->u.thread.total);
461 zfcp_dbf_out(&p, "ready", "%d", r->u.thread.ready);
462 zfcp_dbf_out(&p, "running", "%d", r->u.thread.running);
463 break;
464 case ZFCP_REC_DBF_ID_TARGET:
465 zfcp_dbf_out(&p, "reference", "0x%016Lx", r->u.target.ref);
466 zfcp_dbf_out(&p, "status", "0x%08x", r->u.target.status);
467 zfcp_dbf_out(&p, "erp_count", "%d", r->u.target.erp_count);
468 zfcp_dbf_out(&p, "d_id", "0x%06x", r->u.target.d_id);
469 zfcp_dbf_out(&p, "wwpn", "0x%016Lx", r->u.target.wwpn);
470 zfcp_dbf_out(&p, "fcp_lun", "0x%016Lx", r->u.target.fcp_lun);
471 break;
472 case ZFCP_REC_DBF_ID_TRIGGER:
473 zfcp_dbf_out(&p, "reference", "0x%016Lx", r->u.trigger.ref);
474 zfcp_dbf_out(&p, "erp_action", "0x%016Lx", r->u.trigger.action);
475 zfcp_dbf_out(&p, "requested", "%d", r->u.trigger.want);
476 zfcp_dbf_out(&p, "executed", "%d", r->u.trigger.need);
477 zfcp_dbf_out(&p, "wwpn", "0x%016Lx", r->u.trigger.wwpn);
478 zfcp_dbf_out(&p, "fcp_lun", "0x%016Lx", r->u.trigger.fcp_lun);
479 zfcp_dbf_out(&p, "adapter_status", "0x%08x", r->u.trigger.as);
480 zfcp_dbf_out(&p, "port_status", "0x%08x", r->u.trigger.ps);
481 zfcp_dbf_out(&p, "unit_status", "0x%08x", r->u.trigger.us);
482 break;
483 case ZFCP_REC_DBF_ID_ACTION:
484 zfcp_dbf_out(&p, "erp_action", "0x%016Lx", r->u.action.action);
485 zfcp_dbf_out(&p, "fsf_req", "0x%016Lx", r->u.action.fsf_req);
486 zfcp_dbf_out(&p, "status", "0x%08Lx", r->u.action.status);
487 zfcp_dbf_out(&p, "step", "0x%08Lx", r->u.action.step);
488 break;
489 }
490 p += sprintf(p, "\n");
491 return p - buf;
492 }
493
494 static struct debug_view zfcp_dbf_rec_view = {
495 .name = "structured",
496 .header_proc = zfcp_dbf_view_header,
497 .format_proc = zfcp_dbf_rec_view_format,
498 };
499
500 /**
501 * zfcp_dbf_rec_thread - trace event related to recovery thread operation
502 * @id2: identifier for event
503 * @dbf: reference to dbf structure
504 * This function assumes that the caller is holding erp_lock.
505 */
506 void zfcp_dbf_rec_thread(char *id2, struct zfcp_dbf *dbf)
507 {
508 struct zfcp_adapter *adapter = dbf->adapter;
509 struct zfcp_dbf_rec_record *r = &dbf->rec_buf;
510 unsigned long flags = 0;
511 struct list_head *entry;
512 unsigned ready = 0, running = 0, total;
513
514 list_for_each(entry, &adapter->erp_ready_head)
515 ready++;
516 list_for_each(entry, &adapter->erp_running_head)
517 running++;
518 total = adapter->erp_total_count;
519
520 spin_lock_irqsave(&dbf->rec_lock, flags);
521 memset(r, 0, sizeof(*r));
522 r->id = ZFCP_REC_DBF_ID_THREAD;
523 memcpy(r->id2, id2, ZFCP_DBF_ID_SIZE);
524 r->u.thread.total = total;
525 r->u.thread.ready = ready;
526 r->u.thread.running = running;
527 debug_event(dbf->rec, 6, r, sizeof(*r));
528 spin_unlock_irqrestore(&dbf->rec_lock, flags);
529 }
530
531 /**
532 * zfcp_dbf_rec_thread - trace event related to recovery thread operation
533 * @id2: identifier for event
534 * @adapter: adapter
535 * This function assumes that the caller does not hold erp_lock.
536 */
537 void zfcp_dbf_rec_thread_lock(char *id2, struct zfcp_dbf *dbf)
538 {
539 struct zfcp_adapter *adapter = dbf->adapter;
540 unsigned long flags;
541
542 read_lock_irqsave(&adapter->erp_lock, flags);
543 zfcp_dbf_rec_thread(id2, dbf);
544 read_unlock_irqrestore(&adapter->erp_lock, flags);
545 }
546
547 static void zfcp_dbf_rec_target(char *id2, void *ref, struct zfcp_dbf *dbf,
548 atomic_t *status, atomic_t *erp_count, u64 wwpn,
549 u32 d_id, u64 fcp_lun)
550 {
551 struct zfcp_dbf_rec_record *r = &dbf->rec_buf;
552 unsigned long flags;
553
554 spin_lock_irqsave(&dbf->rec_lock, flags);
555 memset(r, 0, sizeof(*r));
556 r->id = ZFCP_REC_DBF_ID_TARGET;
557 memcpy(r->id2, id2, ZFCP_DBF_ID_SIZE);
558 r->u.target.ref = (unsigned long)ref;
559 r->u.target.status = atomic_read(status);
560 r->u.target.wwpn = wwpn;
561 r->u.target.d_id = d_id;
562 r->u.target.fcp_lun = fcp_lun;
563 r->u.target.erp_count = atomic_read(erp_count);
564 debug_event(dbf->rec, 3, r, sizeof(*r));
565 spin_unlock_irqrestore(&dbf->rec_lock, flags);
566 }
567
568 /**
569 * zfcp_dbf_rec_adapter - trace event for adapter state change
570 * @id: identifier for trigger of state change
571 * @ref: additional reference (e.g. request)
572 * @dbf: reference to dbf structure
573 */
574 void zfcp_dbf_rec_adapter(char *id, void *ref, struct zfcp_dbf *dbf)
575 {
576 struct zfcp_adapter *adapter = dbf->adapter;
577
578 zfcp_dbf_rec_target(id, ref, dbf, &adapter->status,
579 &adapter->erp_counter, 0, 0,
580 ZFCP_DBF_INVALID_LUN);
581 }
582
583 /**
584 * zfcp_dbf_rec_port - trace event for port state change
585 * @id: identifier for trigger of state change
586 * @ref: additional reference (e.g. request)
587 * @port: port
588 */
589 void zfcp_dbf_rec_port(char *id, void *ref, struct zfcp_port *port)
590 {
591 struct zfcp_dbf *dbf = port->adapter->dbf;
592
593 zfcp_dbf_rec_target(id, ref, dbf, &port->status,
594 &port->erp_counter, port->wwpn, port->d_id,
595 ZFCP_DBF_INVALID_LUN);
596 }
597
598 /**
599 * zfcp_dbf_rec_unit - trace event for unit state change
600 * @id: identifier for trigger of state change
601 * @ref: additional reference (e.g. request)
602 * @unit: unit
603 */
604 void zfcp_dbf_rec_unit(char *id, void *ref, struct zfcp_unit *unit)
605 {
606 struct zfcp_port *port = unit->port;
607 struct zfcp_dbf *dbf = port->adapter->dbf;
608
609 zfcp_dbf_rec_target(id, ref, dbf, &unit->status,
610 &unit->erp_counter, port->wwpn, port->d_id,
611 unit->fcp_lun);
612 }
613
614 /**
615 * zfcp_dbf_rec_trigger - trace event for triggered error recovery
616 * @id2: identifier for error recovery trigger
617 * @ref: additional reference (e.g. request)
618 * @want: originally requested error recovery action
619 * @need: error recovery action actually initiated
620 * @action: address of error recovery action struct
621 * @adapter: adapter
622 * @port: port
623 * @unit: unit
624 */
625 void zfcp_dbf_rec_trigger(char *id2, void *ref, u8 want, u8 need, void *action,
626 struct zfcp_adapter *adapter, struct zfcp_port *port,
627 struct zfcp_unit *unit)
628 {
629 struct zfcp_dbf *dbf = adapter->dbf;
630 struct zfcp_dbf_rec_record *r = &dbf->rec_buf;
631 unsigned long flags;
632
633 spin_lock_irqsave(&dbf->rec_lock, flags);
634 memset(r, 0, sizeof(*r));
635 r->id = ZFCP_REC_DBF_ID_TRIGGER;
636 memcpy(r->id2, id2, ZFCP_DBF_ID_SIZE);
637 r->u.trigger.ref = (unsigned long)ref;
638 r->u.trigger.want = want;
639 r->u.trigger.need = need;
640 r->u.trigger.action = (unsigned long)action;
641 r->u.trigger.as = atomic_read(&adapter->status);
642 if (port) {
643 r->u.trigger.ps = atomic_read(&port->status);
644 r->u.trigger.wwpn = port->wwpn;
645 }
646 if (unit)
647 r->u.trigger.us = atomic_read(&unit->status);
648 r->u.trigger.fcp_lun = unit ? unit->fcp_lun : ZFCP_DBF_INVALID_LUN;
649 debug_event(dbf->rec, action ? 1 : 4, r, sizeof(*r));
650 spin_unlock_irqrestore(&dbf->rec_lock, flags);
651 }
652
653 /**
654 * zfcp_dbf_rec_action - trace event showing progress of recovery action
655 * @id2: identifier
656 * @erp_action: error recovery action struct pointer
657 */
658 void zfcp_dbf_rec_action(char *id2, struct zfcp_erp_action *erp_action)
659 {
660 struct zfcp_dbf *dbf = erp_action->adapter->dbf;
661 struct zfcp_dbf_rec_record *r = &dbf->rec_buf;
662 unsigned long flags;
663
664 spin_lock_irqsave(&dbf->rec_lock, flags);
665 memset(r, 0, sizeof(*r));
666 r->id = ZFCP_REC_DBF_ID_ACTION;
667 memcpy(r->id2, id2, ZFCP_DBF_ID_SIZE);
668 r->u.action.action = (unsigned long)erp_action;
669 r->u.action.status = erp_action->status;
670 r->u.action.step = erp_action->step;
671 r->u.action.fsf_req = erp_action->fsf_req_id;
672 debug_event(dbf->rec, 5, r, sizeof(*r));
673 spin_unlock_irqrestore(&dbf->rec_lock, flags);
674 }
675
676 /**
677 * zfcp_dbf_san_ct_request - trace event for issued CT request
678 * @fsf_req: request containing issued CT data
679 * @d_id: destination id where ct request is sent to
680 */
681 void zfcp_dbf_san_ct_request(struct zfcp_fsf_req *fsf_req, u32 d_id)
682 {
683 struct zfcp_fsf_ct_els *ct = (struct zfcp_fsf_ct_els *)fsf_req->data;
684 struct zfcp_adapter *adapter = fsf_req->adapter;
685 struct zfcp_dbf *dbf = adapter->dbf;
686 struct fc_ct_hdr *hdr = sg_virt(ct->req);
687 struct zfcp_dbf_san_record *r = &dbf->san_buf;
688 struct zfcp_dbf_san_record_ct_request *oct = &r->u.ct_req;
689 int level = 3;
690 unsigned long flags;
691
692 spin_lock_irqsave(&dbf->san_lock, flags);
693 memset(r, 0, sizeof(*r));
694 strncpy(r->tag, "octc", ZFCP_DBF_TAG_SIZE);
695 r->fsf_reqid = fsf_req->req_id;
696 r->fsf_seqno = fsf_req->seq_no;
697 oct->d_id = d_id;
698 oct->cmd_req_code = hdr->ct_cmd;
699 oct->revision = hdr->ct_rev;
700 oct->gs_type = hdr->ct_fs_type;
701 oct->gs_subtype = hdr->ct_fs_subtype;
702 oct->options = hdr->ct_options;
703 oct->max_res_size = hdr->ct_mr_size;
704 oct->len = min((int)ct->req->length - (int)sizeof(struct fc_ct_hdr),
705 ZFCP_DBF_SAN_MAX_PAYLOAD);
706 debug_event(dbf->san, level, r, sizeof(*r));
707 zfcp_dbf_hexdump(dbf->san, r, sizeof(*r), level,
708 (void *)hdr + sizeof(struct fc_ct_hdr), oct->len);
709 spin_unlock_irqrestore(&dbf->san_lock, flags);
710 }
711
712 /**
713 * zfcp_dbf_san_ct_response - trace event for completion of CT request
714 * @fsf_req: request containing CT response
715 */
716 void zfcp_dbf_san_ct_response(struct zfcp_fsf_req *fsf_req)
717 {
718 struct zfcp_fsf_ct_els *ct = (struct zfcp_fsf_ct_els *)fsf_req->data;
719 struct zfcp_adapter *adapter = fsf_req->adapter;
720 struct fc_ct_hdr *hdr = sg_virt(ct->resp);
721 struct zfcp_dbf *dbf = adapter->dbf;
722 struct zfcp_dbf_san_record *r = &dbf->san_buf;
723 struct zfcp_dbf_san_record_ct_response *rct = &r->u.ct_resp;
724 int level = 3;
725 unsigned long flags;
726
727 spin_lock_irqsave(&dbf->san_lock, flags);
728 memset(r, 0, sizeof(*r));
729 strncpy(r->tag, "rctc", ZFCP_DBF_TAG_SIZE);
730 r->fsf_reqid = fsf_req->req_id;
731 r->fsf_seqno = fsf_req->seq_no;
732 rct->cmd_rsp_code = hdr->ct_cmd;
733 rct->revision = hdr->ct_rev;
734 rct->reason_code = hdr->ct_reason;
735 rct->expl = hdr->ct_explan;
736 rct->vendor_unique = hdr->ct_vendor;
737 rct->max_res_size = hdr->ct_mr_size;
738 rct->len = min((int)ct->resp->length - (int)sizeof(struct fc_ct_hdr),
739 ZFCP_DBF_SAN_MAX_PAYLOAD);
740 debug_event(dbf->san, level, r, sizeof(*r));
741 zfcp_dbf_hexdump(dbf->san, r, sizeof(*r), level,
742 (void *)hdr + sizeof(struct fc_ct_hdr), rct->len);
743 spin_unlock_irqrestore(&dbf->san_lock, flags);
744 }
745
746 static void zfcp_dbf_san_els(const char *tag, int level,
747 struct zfcp_fsf_req *fsf_req, u32 d_id,
748 void *buffer, int buflen)
749 {
750 struct zfcp_adapter *adapter = fsf_req->adapter;
751 struct zfcp_dbf *dbf = adapter->dbf;
752 struct zfcp_dbf_san_record *rec = &dbf->san_buf;
753 unsigned long flags;
754
755 spin_lock_irqsave(&dbf->san_lock, flags);
756 memset(rec, 0, sizeof(*rec));
757 strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
758 rec->fsf_reqid = fsf_req->req_id;
759 rec->fsf_seqno = fsf_req->seq_no;
760 rec->u.els.d_id = d_id;
761 debug_event(dbf->san, level, rec, sizeof(*rec));
762 zfcp_dbf_hexdump(dbf->san, rec, sizeof(*rec), level,
763 buffer, min(buflen, ZFCP_DBF_SAN_MAX_PAYLOAD));
764 spin_unlock_irqrestore(&dbf->san_lock, flags);
765 }
766
767 /**
768 * zfcp_dbf_san_els_request - trace event for issued ELS
769 * @fsf_req: request containing issued ELS
770 */
771 void zfcp_dbf_san_els_request(struct zfcp_fsf_req *fsf_req)
772 {
773 struct zfcp_fsf_ct_els *els = (struct zfcp_fsf_ct_els *)fsf_req->data;
774 u32 d_id = ntoh24(fsf_req->qtcb->bottom.support.d_id);
775
776 zfcp_dbf_san_els("oels", 2, fsf_req, d_id,
777 sg_virt(els->req), els->req->length);
778 }
779
780 /**
781 * zfcp_dbf_san_els_response - trace event for completed ELS
782 * @fsf_req: request containing ELS response
783 */
784 void zfcp_dbf_san_els_response(struct zfcp_fsf_req *fsf_req)
785 {
786 struct zfcp_fsf_ct_els *els = (struct zfcp_fsf_ct_els *)fsf_req->data;
787 u32 d_id = ntoh24(fsf_req->qtcb->bottom.support.d_id);
788
789 zfcp_dbf_san_els("rels", 2, fsf_req, d_id,
790 sg_virt(els->resp), els->resp->length);
791 }
792
793 /**
794 * zfcp_dbf_san_incoming_els - trace event for incomig ELS
795 * @fsf_req: request containing unsolicited status buffer with incoming ELS
796 */
797 void zfcp_dbf_san_incoming_els(struct zfcp_fsf_req *fsf_req)
798 {
799 struct fsf_status_read_buffer *buf =
800 (struct fsf_status_read_buffer *)fsf_req->data;
801 int length = (int)buf->length -
802 (int)((void *)&buf->payload - (void *)buf);
803
804 zfcp_dbf_san_els("iels", 1, fsf_req, ntoh24(buf->d_id),
805 (void *)buf->payload.data, length);
806 }
807
808 static int zfcp_dbf_san_view_format(debug_info_t *id, struct debug_view *view,
809 char *out_buf, const char *in_buf)
810 {
811 struct zfcp_dbf_san_record *r = (struct zfcp_dbf_san_record *)in_buf;
812 char *p = out_buf;
813
814 if (strncmp(r->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
815 return 0;
816
817 zfcp_dbf_tag(&p, "tag", r->tag);
818 zfcp_dbf_out(&p, "fsf_reqid", "0x%0Lx", r->fsf_reqid);
819 zfcp_dbf_out(&p, "fsf_seqno", "0x%08x", r->fsf_seqno);
820
821 if (strncmp(r->tag, "octc", ZFCP_DBF_TAG_SIZE) == 0) {
822 struct zfcp_dbf_san_record_ct_request *ct = &r->u.ct_req;
823 zfcp_dbf_out(&p, "d_id", "0x%06x", ct->d_id);
824 zfcp_dbf_out(&p, "cmd_req_code", "0x%04x", ct->cmd_req_code);
825 zfcp_dbf_out(&p, "revision", "0x%02x", ct->revision);
826 zfcp_dbf_out(&p, "gs_type", "0x%02x", ct->gs_type);
827 zfcp_dbf_out(&p, "gs_subtype", "0x%02x", ct->gs_subtype);
828 zfcp_dbf_out(&p, "options", "0x%02x", ct->options);
829 zfcp_dbf_out(&p, "max_res_size", "0x%04x", ct->max_res_size);
830 } else if (strncmp(r->tag, "rctc", ZFCP_DBF_TAG_SIZE) == 0) {
831 struct zfcp_dbf_san_record_ct_response *ct = &r->u.ct_resp;
832 zfcp_dbf_out(&p, "cmd_rsp_code", "0x%04x", ct->cmd_rsp_code);
833 zfcp_dbf_out(&p, "revision", "0x%02x", ct->revision);
834 zfcp_dbf_out(&p, "reason_code", "0x%02x", ct->reason_code);
835 zfcp_dbf_out(&p, "reason_code_expl", "0x%02x", ct->expl);
836 zfcp_dbf_out(&p, "vendor_unique", "0x%02x", ct->vendor_unique);
837 zfcp_dbf_out(&p, "max_res_size", "0x%04x", ct->max_res_size);
838 } else if (strncmp(r->tag, "oels", ZFCP_DBF_TAG_SIZE) == 0 ||
839 strncmp(r->tag, "rels", ZFCP_DBF_TAG_SIZE) == 0 ||
840 strncmp(r->tag, "iels", ZFCP_DBF_TAG_SIZE) == 0) {
841 struct zfcp_dbf_san_record_els *els = &r->u.els;
842 zfcp_dbf_out(&p, "d_id", "0x%06x", els->d_id);
843 }
844 return p - out_buf;
845 }
846
847 static struct debug_view zfcp_dbf_san_view = {
848 .name = "structured",
849 .header_proc = zfcp_dbf_view_header,
850 .format_proc = zfcp_dbf_san_view_format,
851 };
852
853 void _zfcp_dbf_scsi(const char *tag, const char *tag2, int level,
854 struct zfcp_dbf *dbf, struct scsi_cmnd *scsi_cmnd,
855 struct zfcp_fsf_req *fsf_req, unsigned long old_req_id)
856 {
857 struct zfcp_dbf_scsi_record *rec = &dbf->scsi_buf;
858 struct zfcp_dbf_dump *dump = (struct zfcp_dbf_dump *)rec;
859 unsigned long flags;
860 struct fcp_resp_with_ext *fcp_rsp;
861 struct fcp_resp_rsp_info *fcp_rsp_info = NULL;
862 char *fcp_sns_info = NULL;
863 int offset = 0, buflen = 0;
864
865 spin_lock_irqsave(&dbf->scsi_lock, flags);
866 do {
867 memset(rec, 0, sizeof(*rec));
868 if (offset == 0) {
869 strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
870 strncpy(rec->tag2, tag2, ZFCP_DBF_TAG_SIZE);
871 if (scsi_cmnd != NULL) {
872 if (scsi_cmnd->device) {
873 rec->scsi_id = scsi_cmnd->device->id;
874 rec->scsi_lun = scsi_cmnd->device->lun;
875 }
876 rec->scsi_result = scsi_cmnd->result;
877 rec->scsi_cmnd = (unsigned long)scsi_cmnd;
878 rec->scsi_serial = scsi_cmnd->serial_number;
879 memcpy(rec->scsi_opcode, scsi_cmnd->cmnd,
880 min((int)scsi_cmnd->cmd_len,
881 ZFCP_DBF_SCSI_OPCODE));
882 rec->scsi_retries = scsi_cmnd->retries;
883 rec->scsi_allowed = scsi_cmnd->allowed;
884 }
885 if (fsf_req != NULL) {
886 fcp_rsp = (struct fcp_resp_with_ext *)
887 &(fsf_req->qtcb->bottom.io.fcp_rsp);
888 fcp_rsp_info = (struct fcp_resp_rsp_info *)
889 &fcp_rsp[1];
890 fcp_sns_info = (char *) &fcp_rsp[1];
891 if (fcp_rsp->resp.fr_flags & FCP_RSP_LEN_VAL)
892 fcp_sns_info += fcp_rsp->ext.fr_sns_len;
893
894 rec->rsp_validity = fcp_rsp->resp.fr_flags;
895 rec->rsp_scsi_status = fcp_rsp->resp.fr_status;
896 rec->rsp_resid = fcp_rsp->ext.fr_resid;
897 if (fcp_rsp->resp.fr_flags & FCP_RSP_LEN_VAL)
898 rec->rsp_code = fcp_rsp_info->rsp_code;
899 if (fcp_rsp->resp.fr_flags & FCP_SNS_LEN_VAL) {
900 buflen = min(fcp_rsp->ext.fr_sns_len,
901 (u32)ZFCP_DBF_SCSI_MAX_FCP_SNS_INFO);
902 rec->sns_info_len = buflen;
903 memcpy(rec->sns_info, fcp_sns_info,
904 min(buflen,
905 ZFCP_DBF_SCSI_FCP_SNS_INFO));
906 offset += min(buflen,
907 ZFCP_DBF_SCSI_FCP_SNS_INFO);
908 }
909
910 rec->fsf_reqid = fsf_req->req_id;
911 rec->fsf_seqno = fsf_req->seq_no;
912 rec->fsf_issued = fsf_req->issued;
913 }
914 rec->old_fsf_reqid = old_req_id;
915 } else {
916 strncpy(dump->tag, "dump", ZFCP_DBF_TAG_SIZE);
917 dump->total_size = buflen;
918 dump->offset = offset;
919 dump->size = min(buflen - offset,
920 (int)sizeof(struct
921 zfcp_dbf_scsi_record) -
922 (int)sizeof(struct zfcp_dbf_dump));
923 memcpy(dump->data, fcp_sns_info + offset, dump->size);
924 offset += dump->size;
925 }
926 debug_event(dbf->scsi, level, rec, sizeof(*rec));
927 } while (offset < buflen);
928 spin_unlock_irqrestore(&dbf->scsi_lock, flags);
929 }
930
931 static int zfcp_dbf_scsi_view_format(debug_info_t *id, struct debug_view *view,
932 char *out_buf, const char *in_buf)
933 {
934 struct zfcp_dbf_scsi_record *r = (struct zfcp_dbf_scsi_record *)in_buf;
935 struct timespec t;
936 char *p = out_buf;
937
938 if (strncmp(r->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
939 return 0;
940
941 zfcp_dbf_tag(&p, "tag", r->tag);
942 zfcp_dbf_tag(&p, "tag2", r->tag2);
943 zfcp_dbf_out(&p, "scsi_id", "0x%08x", r->scsi_id);
944 zfcp_dbf_out(&p, "scsi_lun", "0x%08x", r->scsi_lun);
945 zfcp_dbf_out(&p, "scsi_result", "0x%08x", r->scsi_result);
946 zfcp_dbf_out(&p, "scsi_cmnd", "0x%0Lx", r->scsi_cmnd);
947 zfcp_dbf_out(&p, "scsi_serial", "0x%016Lx", r->scsi_serial);
948 zfcp_dbf_outd(&p, "scsi_opcode", r->scsi_opcode, ZFCP_DBF_SCSI_OPCODE,
949 0, ZFCP_DBF_SCSI_OPCODE);
950 zfcp_dbf_out(&p, "scsi_retries", "0x%02x", r->scsi_retries);
951 zfcp_dbf_out(&p, "scsi_allowed", "0x%02x", r->scsi_allowed);
952 if (strncmp(r->tag, "abrt", ZFCP_DBF_TAG_SIZE) == 0)
953 zfcp_dbf_out(&p, "old_fsf_reqid", "0x%0Lx", r->old_fsf_reqid);
954 zfcp_dbf_out(&p, "fsf_reqid", "0x%0Lx", r->fsf_reqid);
955 zfcp_dbf_out(&p, "fsf_seqno", "0x%08x", r->fsf_seqno);
956 stck_to_timespec(r->fsf_issued, &t);
957 zfcp_dbf_out(&p, "fsf_issued", "%011lu:%06lu", t.tv_sec, t.tv_nsec);
958
959 if (strncmp(r->tag, "rslt", ZFCP_DBF_TAG_SIZE) == 0) {
960 zfcp_dbf_out(&p, "fcp_rsp_validity", "0x%02x", r->rsp_validity);
961 zfcp_dbf_out(&p, "fcp_rsp_scsi_status", "0x%02x",
962 r->rsp_scsi_status);
963 zfcp_dbf_out(&p, "fcp_rsp_resid", "0x%08x", r->rsp_resid);
964 zfcp_dbf_out(&p, "fcp_rsp_code", "0x%08x", r->rsp_code);
965 zfcp_dbf_out(&p, "fcp_sns_info_len", "0x%08x", r->sns_info_len);
966 zfcp_dbf_outd(&p, "fcp_sns_info", r->sns_info,
967 min((int)r->sns_info_len,
968 ZFCP_DBF_SCSI_FCP_SNS_INFO), 0,
969 r->sns_info_len);
970 }
971 p += sprintf(p, "\n");
972 return p - out_buf;
973 }
974
975 static struct debug_view zfcp_dbf_scsi_view = {
976 .name = "structured",
977 .header_proc = zfcp_dbf_view_header,
978 .format_proc = zfcp_dbf_scsi_view_format,
979 };
980
981 static debug_info_t *zfcp_dbf_reg(const char *name, int level,
982 struct debug_view *view, int size)
983 {
984 struct debug_info *d;
985
986 d = debug_register(name, dbfsize, level, size);
987 if (!d)
988 return NULL;
989
990 debug_register_view(d, &debug_hex_ascii_view);
991 debug_register_view(d, view);
992 debug_set_level(d, level);
993
994 return d;
995 }
996
997 /**
998 * zfcp_adapter_debug_register - registers debug feature for an adapter
999 * @adapter: pointer to adapter for which debug features should be registered
1000 * return: -ENOMEM on error, 0 otherwise
1001 */
1002 int zfcp_dbf_adapter_register(struct zfcp_adapter *adapter)
1003 {
1004 char dbf_name[DEBUG_MAX_NAME_LEN];
1005 struct zfcp_dbf *dbf;
1006
1007 dbf = kmalloc(sizeof(struct zfcp_dbf), GFP_KERNEL);
1008 if (!dbf)
1009 return -ENOMEM;
1010
1011 dbf->adapter = adapter;
1012
1013 spin_lock_init(&dbf->hba_lock);
1014 spin_lock_init(&dbf->san_lock);
1015 spin_lock_init(&dbf->scsi_lock);
1016 spin_lock_init(&dbf->rec_lock);
1017
1018 /* debug feature area which records recovery activity */
1019 sprintf(dbf_name, "zfcp_%s_rec", dev_name(&adapter->ccw_device->dev));
1020 dbf->rec = zfcp_dbf_reg(dbf_name, 3, &zfcp_dbf_rec_view,
1021 sizeof(struct zfcp_dbf_rec_record));
1022 if (!dbf->rec)
1023 goto err_out;
1024
1025 /* debug feature area which records HBA (FSF and QDIO) conditions */
1026 sprintf(dbf_name, "zfcp_%s_hba", dev_name(&adapter->ccw_device->dev));
1027 dbf->hba = zfcp_dbf_reg(dbf_name, 3, &zfcp_dbf_hba_view,
1028 sizeof(struct zfcp_dbf_hba_record));
1029 if (!dbf->hba)
1030 goto err_out;
1031
1032 /* debug feature area which records SAN command failures and recovery */
1033 sprintf(dbf_name, "zfcp_%s_san", dev_name(&adapter->ccw_device->dev));
1034 dbf->san = zfcp_dbf_reg(dbf_name, 6, &zfcp_dbf_san_view,
1035 sizeof(struct zfcp_dbf_san_record));
1036 if (!dbf->san)
1037 goto err_out;
1038
1039 /* debug feature area which records SCSI command failures and recovery */
1040 sprintf(dbf_name, "zfcp_%s_scsi", dev_name(&adapter->ccw_device->dev));
1041 dbf->scsi = zfcp_dbf_reg(dbf_name, 3, &zfcp_dbf_scsi_view,
1042 sizeof(struct zfcp_dbf_scsi_record));
1043 if (!dbf->scsi)
1044 goto err_out;
1045
1046 adapter->dbf = dbf;
1047 return 0;
1048
1049 err_out:
1050 zfcp_dbf_adapter_unregister(dbf);
1051 return -ENOMEM;
1052 }
1053
1054 /**
1055 * zfcp_adapter_debug_unregister - unregisters debug feature for an adapter
1056 * @dbf: pointer to dbf for which debug features should be unregistered
1057 */
1058 void zfcp_dbf_adapter_unregister(struct zfcp_dbf *dbf)
1059 {
1060 if (!dbf)
1061 return;
1062 debug_unregister(dbf->scsi);
1063 debug_unregister(dbf->san);
1064 debug_unregister(dbf->hba);
1065 debug_unregister(dbf->rec);
1066 dbf->adapter->dbf = NULL;
1067 kfree(dbf);
1068 }
1069
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