4 * Debug traces for zfcp.
6 * Copyright IBM Corp. 2002, 2017
9 #define KMSG_COMPONENT "zfcp"
10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
12 #include <linux/module.h>
13 #include <linux/ctype.h>
14 #include <linux/slab.h>
15 #include <asm/debug.h>
20 static u32 dbfsize = 4;
22 module_param(dbfsize, uint, 0400);
23 MODULE_PARM_DESC(dbfsize,
24 "number of pages for each debug feature area (default 4)");
26 static u32 dbflevel = 3;
28 module_param(dbflevel, uint, 0400);
29 MODULE_PARM_DESC(dbflevel,
30 "log level for each debug feature area "
31 "(default 3, range 0..6)");
33 static inline unsigned int zfcp_dbf_plen(unsigned int offset)
35 return sizeof(struct zfcp_dbf_pay) + offset - ZFCP_DBF_PAY_MAX_REC;
39 void zfcp_dbf_pl_write(struct zfcp_dbf *dbf, void *data, u16 length, char *area,
42 struct zfcp_dbf_pay *pl = &dbf->pay_buf;
43 u16 offset = 0, rec_length;
45 spin_lock(&dbf->pay_lock);
46 memset(pl, 0, sizeof(*pl));
47 pl->fsf_req_id = req_id;
48 memcpy(pl->area, area, ZFCP_DBF_TAG_LEN);
50 while (offset < length) {
51 rec_length = min((u16) ZFCP_DBF_PAY_MAX_REC,
52 (u16) (length - offset));
53 memcpy(pl->data, data + offset, rec_length);
54 debug_event(dbf->pay, 1, pl, zfcp_dbf_plen(rec_length));
60 spin_unlock(&dbf->pay_lock);
64 * zfcp_dbf_hba_fsf_res - trace event for fsf responses
65 * @tag: tag indicating which kind of unsolicited status has been received
66 * @req: request for which a response was received
68 void zfcp_dbf_hba_fsf_res(char *tag, int level, struct zfcp_fsf_req *req)
70 struct zfcp_dbf *dbf = req->adapter->dbf;
71 struct fsf_qtcb_prefix *q_pref = &req->qtcb->prefix;
72 struct fsf_qtcb_header *q_head = &req->qtcb->header;
73 struct zfcp_dbf_hba *rec = &dbf->hba_buf;
76 spin_lock_irqsave(&dbf->hba_lock, flags);
77 memset(rec, 0, sizeof(*rec));
79 memcpy(rec->tag, tag, ZFCP_DBF_TAG_LEN);
80 rec->id = ZFCP_DBF_HBA_RES;
81 rec->fsf_req_id = req->req_id;
82 rec->fsf_req_status = req->status;
83 rec->fsf_cmd = req->fsf_command;
84 rec->fsf_seq_no = req->seq_no;
85 rec->u.res.req_issued = req->issued;
86 rec->u.res.prot_status = q_pref->prot_status;
87 rec->u.res.fsf_status = q_head->fsf_status;
88 rec->u.res.port_handle = q_head->port_handle;
89 rec->u.res.lun_handle = q_head->lun_handle;
91 memcpy(rec->u.res.prot_status_qual, &q_pref->prot_status_qual,
92 FSF_PROT_STATUS_QUAL_SIZE);
93 memcpy(rec->u.res.fsf_status_qual, &q_head->fsf_status_qual,
94 FSF_STATUS_QUALIFIER_SIZE);
96 if (req->fsf_command != FSF_QTCB_FCP_CMND) {
97 rec->pl_len = q_head->log_length;
98 zfcp_dbf_pl_write(dbf, (char *)q_pref + q_head->log_start,
99 rec->pl_len, "fsf_res", req->req_id);
102 debug_event(dbf->hba, level, rec, sizeof(*rec));
103 spin_unlock_irqrestore(&dbf->hba_lock, flags);
107 * zfcp_dbf_hba_fsf_uss - trace event for an unsolicited status buffer
108 * @tag: tag indicating which kind of unsolicited status has been received
109 * @req: request providing the unsolicited status
111 void zfcp_dbf_hba_fsf_uss(char *tag, struct zfcp_fsf_req *req)
113 struct zfcp_dbf *dbf = req->adapter->dbf;
114 struct fsf_status_read_buffer *srb = req->data;
115 struct zfcp_dbf_hba *rec = &dbf->hba_buf;
118 spin_lock_irqsave(&dbf->hba_lock, flags);
119 memset(rec, 0, sizeof(*rec));
121 memcpy(rec->tag, tag, ZFCP_DBF_TAG_LEN);
122 rec->id = ZFCP_DBF_HBA_USS;
123 rec->fsf_req_id = req->req_id;
124 rec->fsf_req_status = req->status;
125 rec->fsf_cmd = req->fsf_command;
130 rec->u.uss.status_type = srb->status_type;
131 rec->u.uss.status_subtype = srb->status_subtype;
132 rec->u.uss.d_id = ntoh24(srb->d_id);
133 rec->u.uss.lun = srb->fcp_lun;
134 memcpy(&rec->u.uss.queue_designator, &srb->queue_designator,
135 sizeof(rec->u.uss.queue_designator));
137 /* status read buffer payload length */
138 rec->pl_len = (!srb->length) ? 0 : srb->length -
139 offsetof(struct fsf_status_read_buffer, payload);
142 zfcp_dbf_pl_write(dbf, srb->payload.data, rec->pl_len,
143 "fsf_uss", req->req_id);
145 debug_event(dbf->hba, 2, rec, sizeof(*rec));
146 spin_unlock_irqrestore(&dbf->hba_lock, flags);
150 * zfcp_dbf_hba_bit_err - trace event for bit error conditions
151 * @tag: tag indicating which kind of unsolicited status has been received
152 * @req: request which caused the bit_error condition
154 void zfcp_dbf_hba_bit_err(char *tag, struct zfcp_fsf_req *req)
156 struct zfcp_dbf *dbf = req->adapter->dbf;
157 struct zfcp_dbf_hba *rec = &dbf->hba_buf;
158 struct fsf_status_read_buffer *sr_buf = req->data;
161 spin_lock_irqsave(&dbf->hba_lock, flags);
162 memset(rec, 0, sizeof(*rec));
164 memcpy(rec->tag, tag, ZFCP_DBF_TAG_LEN);
165 rec->id = ZFCP_DBF_HBA_BIT;
166 rec->fsf_req_id = req->req_id;
167 rec->fsf_req_status = req->status;
168 rec->fsf_cmd = req->fsf_command;
169 memcpy(&rec->u.be, &sr_buf->payload.bit_error,
170 sizeof(struct fsf_bit_error_payload));
172 debug_event(dbf->hba, 1, rec, sizeof(*rec));
173 spin_unlock_irqrestore(&dbf->hba_lock, flags);
177 * zfcp_dbf_hba_def_err - trace event for deferred error messages
178 * @adapter: pointer to struct zfcp_adapter
179 * @req_id: request id which caused the deferred error message
180 * @scount: number of sbals incl. the signaling sbal
181 * @pl: array of all involved sbals
183 void zfcp_dbf_hba_def_err(struct zfcp_adapter *adapter, u64 req_id, u16 scount,
186 struct zfcp_dbf *dbf = adapter->dbf;
187 struct zfcp_dbf_pay *payload = &dbf->pay_buf;
194 spin_lock_irqsave(&dbf->pay_lock, flags);
195 memset(payload, 0, sizeof(*payload));
197 memcpy(payload->area, "def_err", 7);
198 payload->fsf_req_id = req_id;
199 payload->counter = 0;
200 length = min((u16)sizeof(struct qdio_buffer),
201 (u16)ZFCP_DBF_PAY_MAX_REC);
203 while (payload->counter < scount && (char *)pl[payload->counter]) {
204 memcpy(payload->data, (char *)pl[payload->counter], length);
205 debug_event(dbf->pay, 1, payload, zfcp_dbf_plen(length));
209 spin_unlock_irqrestore(&dbf->pay_lock, flags);
213 * zfcp_dbf_hba_basic - trace event for basic adapter events
214 * @adapter: pointer to struct zfcp_adapter
216 void zfcp_dbf_hba_basic(char *tag, struct zfcp_adapter *adapter)
218 struct zfcp_dbf *dbf = adapter->dbf;
219 struct zfcp_dbf_hba *rec = &dbf->hba_buf;
222 spin_lock_irqsave(&dbf->hba_lock, flags);
223 memset(rec, 0, sizeof(*rec));
225 memcpy(rec->tag, tag, ZFCP_DBF_TAG_LEN);
226 rec->id = ZFCP_DBF_HBA_BASIC;
228 debug_event(dbf->hba, 1, rec, sizeof(*rec));
229 spin_unlock_irqrestore(&dbf->hba_lock, flags);
232 static void zfcp_dbf_set_common(struct zfcp_dbf_rec *rec,
233 struct zfcp_adapter *adapter,
234 struct zfcp_port *port,
235 struct scsi_device *sdev)
237 rec->adapter_status = atomic_read(&adapter->status);
239 rec->port_status = atomic_read(&port->status);
240 rec->wwpn = port->wwpn;
241 rec->d_id = port->d_id;
244 rec->lun_status = atomic_read(&sdev_to_zfcp(sdev)->status);
245 rec->lun = zfcp_scsi_dev_lun(sdev);
247 rec->lun = ZFCP_DBF_INVALID_LUN;
251 * zfcp_dbf_rec_trig - trace event related to triggered recovery
252 * @tag: identifier for event
253 * @adapter: adapter on which the erp_action should run
254 * @port: remote port involved in the erp_action
255 * @sdev: scsi device involved in the erp_action
256 * @want: wanted erp_action
257 * @need: required erp_action
259 * The adapter->erp_lock has to be held.
261 void zfcp_dbf_rec_trig(char *tag, struct zfcp_adapter *adapter,
262 struct zfcp_port *port, struct scsi_device *sdev,
265 struct zfcp_dbf *dbf = adapter->dbf;
266 struct zfcp_dbf_rec *rec = &dbf->rec_buf;
267 struct list_head *entry;
270 spin_lock_irqsave(&dbf->rec_lock, flags);
271 memset(rec, 0, sizeof(*rec));
273 rec->id = ZFCP_DBF_REC_TRIG;
274 memcpy(rec->tag, tag, ZFCP_DBF_TAG_LEN);
275 zfcp_dbf_set_common(rec, adapter, port, sdev);
277 list_for_each(entry, &adapter->erp_ready_head)
280 list_for_each(entry, &adapter->erp_running_head)
281 rec->u.trig.running++;
283 rec->u.trig.want = want;
284 rec->u.trig.need = need;
286 debug_event(dbf->rec, 1, rec, sizeof(*rec));
287 spin_unlock_irqrestore(&dbf->rec_lock, flags);
292 * zfcp_dbf_rec_run_lvl - trace event related to running recovery
293 * @level: trace level to be used for event
294 * @tag: identifier for event
295 * @erp: erp_action running
297 void zfcp_dbf_rec_run_lvl(int level, char *tag, struct zfcp_erp_action *erp)
299 struct zfcp_dbf *dbf = erp->adapter->dbf;
300 struct zfcp_dbf_rec *rec = &dbf->rec_buf;
303 spin_lock_irqsave(&dbf->rec_lock, flags);
304 memset(rec, 0, sizeof(*rec));
306 rec->id = ZFCP_DBF_REC_RUN;
307 memcpy(rec->tag, tag, ZFCP_DBF_TAG_LEN);
308 zfcp_dbf_set_common(rec, erp->adapter, erp->port, erp->sdev);
310 rec->u.run.fsf_req_id = erp->fsf_req_id;
311 rec->u.run.rec_status = erp->status;
312 rec->u.run.rec_step = erp->step;
313 rec->u.run.rec_action = erp->action;
316 rec->u.run.rec_count =
317 atomic_read(&sdev_to_zfcp(erp->sdev)->erp_counter);
319 rec->u.run.rec_count = atomic_read(&erp->port->erp_counter);
321 rec->u.run.rec_count = atomic_read(&erp->adapter->erp_counter);
323 debug_event(dbf->rec, level, rec, sizeof(*rec));
324 spin_unlock_irqrestore(&dbf->rec_lock, flags);
328 * zfcp_dbf_rec_run - trace event related to running recovery
329 * @tag: identifier for event
330 * @erp: erp_action running
332 void zfcp_dbf_rec_run(char *tag, struct zfcp_erp_action *erp)
334 zfcp_dbf_rec_run_lvl(1, tag, erp);
338 * zfcp_dbf_rec_run_wka - trace wka port event with info like running recovery
339 * @tag: identifier for event
340 * @wka_port: well known address port
341 * @req_id: request ID to correlate with potential HBA trace record
343 void zfcp_dbf_rec_run_wka(char *tag, struct zfcp_fc_wka_port *wka_port,
346 struct zfcp_dbf *dbf = wka_port->adapter->dbf;
347 struct zfcp_dbf_rec *rec = &dbf->rec_buf;
350 spin_lock_irqsave(&dbf->rec_lock, flags);
351 memset(rec, 0, sizeof(*rec));
353 rec->id = ZFCP_DBF_REC_RUN;
354 memcpy(rec->tag, tag, ZFCP_DBF_TAG_LEN);
355 rec->port_status = wka_port->status;
356 rec->d_id = wka_port->d_id;
357 rec->lun = ZFCP_DBF_INVALID_LUN;
359 rec->u.run.fsf_req_id = req_id;
360 rec->u.run.rec_status = ~0;
361 rec->u.run.rec_step = ~0;
362 rec->u.run.rec_action = ~0;
363 rec->u.run.rec_count = ~0;
365 debug_event(dbf->rec, 1, rec, sizeof(*rec));
366 spin_unlock_irqrestore(&dbf->rec_lock, flags);
370 void zfcp_dbf_san(char *tag, struct zfcp_dbf *dbf,
371 char *paytag, struct scatterlist *sg, u8 id, u16 len,
372 u64 req_id, u32 d_id, u16 cap_len)
374 struct zfcp_dbf_san *rec = &dbf->san_buf;
377 struct zfcp_dbf_pay *payload = &dbf->pay_buf;
380 spin_lock_irqsave(&dbf->san_lock, flags);
381 memset(rec, 0, sizeof(*rec));
384 rec->fsf_req_id = req_id;
386 memcpy(rec->tag, tag, ZFCP_DBF_TAG_LEN);
387 rec->pl_len = len; /* full length even if we cap pay below */
390 rec_len = min_t(unsigned int, sg->length, ZFCP_DBF_SAN_MAX_PAYLOAD);
391 memcpy(rec->payload, sg_virt(sg), rec_len); /* part of 1st sg entry */
393 goto out; /* skip pay record if full content in rec->payload */
395 /* if (len > rec_len):
396 * dump data up to cap_len ignoring small duplicate in rec->payload
398 spin_lock(&dbf->pay_lock);
399 memset(payload, 0, sizeof(*payload));
400 memcpy(payload->area, paytag, ZFCP_DBF_TAG_LEN);
401 payload->fsf_req_id = req_id;
402 payload->counter = 0;
403 for (; sg && pay_sum < cap_len; sg = sg_next(sg)) {
404 u16 pay_len, offset = 0;
406 while (offset < sg->length && pay_sum < cap_len) {
407 pay_len = min((u16)ZFCP_DBF_PAY_MAX_REC,
408 (u16)(sg->length - offset));
409 /* cap_len <= pay_sum < cap_len+ZFCP_DBF_PAY_MAX_REC */
410 memcpy(payload->data, sg_virt(sg) + offset, pay_len);
411 debug_event(dbf->pay, 1, payload,
412 zfcp_dbf_plen(pay_len));
418 spin_unlock(&dbf->pay_lock);
421 debug_event(dbf->san, 1, rec, sizeof(*rec));
422 spin_unlock_irqrestore(&dbf->san_lock, flags);
426 * zfcp_dbf_san_req - trace event for issued SAN request
427 * @tag: identifier for event
428 * @fsf_req: request containing issued CT data
429 * d_id: destination ID
431 void zfcp_dbf_san_req(char *tag, struct zfcp_fsf_req *fsf, u32 d_id)
433 struct zfcp_dbf *dbf = fsf->adapter->dbf;
434 struct zfcp_fsf_ct_els *ct_els = fsf->data;
437 length = (u16)zfcp_qdio_real_bytes(ct_els->req);
438 zfcp_dbf_san(tag, dbf, "san_req", ct_els->req, ZFCP_DBF_SAN_REQ,
439 length, fsf->req_id, d_id, length);
442 static u16 zfcp_dbf_san_res_cap_len_if_gpn_ft(char *tag,
443 struct zfcp_fsf_req *fsf,
446 struct zfcp_fsf_ct_els *ct_els = fsf->data;
447 struct fc_ct_hdr *reqh = sg_virt(ct_els->req);
448 struct fc_ns_gid_ft *reqn = (struct fc_ns_gid_ft *)(reqh + 1);
449 struct scatterlist *resp_entry = ct_els->resp;
450 struct fc_ct_hdr *resph;
451 struct fc_gpn_ft_resp *acc;
452 int max_entries, x, last = 0;
454 if (!(memcmp(tag, "fsscth2", 7) == 0
455 && ct_els->d_id == FC_FID_DIR_SERV
456 && reqh->ct_rev == FC_CT_REV
457 && reqh->ct_in_id[0] == 0
458 && reqh->ct_in_id[1] == 0
459 && reqh->ct_in_id[2] == 0
460 && reqh->ct_fs_type == FC_FST_DIR
461 && reqh->ct_fs_subtype == FC_NS_SUBTYPE
462 && reqh->ct_options == 0
463 && reqh->_ct_resvd1 == 0
464 && reqh->ct_cmd == FC_NS_GPN_FT
465 /* reqh->ct_mr_size can vary so do not match but read below */
466 && reqh->_ct_resvd2 == 0
467 && reqh->ct_reason == 0
468 && reqh->ct_explan == 0
469 && reqh->ct_vendor == 0
470 && reqn->fn_resvd == 0
471 && reqn->fn_domain_id_scope == 0
472 && reqn->fn_area_id_scope == 0
473 && reqn->fn_fc4_type == FC_TYPE_FCP))
474 return len; /* not GPN_FT response so do not cap */
476 acc = sg_virt(resp_entry);
478 /* cap all but accept CT responses to at least the CT header */
479 resph = (struct fc_ct_hdr *)acc;
480 if ((ct_els->status) ||
481 (resph->ct_cmd != cpu_to_be16(FC_FS_ACC)))
482 return max(FC_CT_HDR_LEN, ZFCP_DBF_SAN_MAX_PAYLOAD);
484 max_entries = (reqh->ct_mr_size * 4 / sizeof(struct fc_gpn_ft_resp))
485 + 1 /* zfcp_fc_scan_ports: bytes correct, entries off-by-one
486 * to account for header as 1st pseudo "entry" */;
488 /* the basic CT_IU preamble is the same size as one entry in the GPN_FT
489 * response, allowing us to skip special handling for it - just skip it
491 for (x = 1; x < max_entries && !last; x++) {
492 if (x % (ZFCP_FC_GPN_FT_ENT_PAGE + 1))
495 acc = sg_virt(++resp_entry);
497 last = acc->fp_flags & FC_NS_FID_LAST;
499 len = min(len, (u16)(x * sizeof(struct fc_gpn_ft_resp)));
500 return len; /* cap after last entry */
504 * zfcp_dbf_san_res - trace event for received SAN request
505 * @tag: identifier for event
506 * @fsf_req: request containing issued CT data
508 void zfcp_dbf_san_res(char *tag, struct zfcp_fsf_req *fsf)
510 struct zfcp_dbf *dbf = fsf->adapter->dbf;
511 struct zfcp_fsf_ct_els *ct_els = fsf->data;
514 length = (u16)zfcp_qdio_real_bytes(ct_els->resp);
515 zfcp_dbf_san(tag, dbf, "san_res", ct_els->resp, ZFCP_DBF_SAN_RES,
516 length, fsf->req_id, ct_els->d_id,
517 zfcp_dbf_san_res_cap_len_if_gpn_ft(tag, fsf, length));
521 * zfcp_dbf_san_in_els - trace event for incoming ELS
522 * @tag: identifier for event
523 * @fsf_req: request containing issued CT data
525 void zfcp_dbf_san_in_els(char *tag, struct zfcp_fsf_req *fsf)
527 struct zfcp_dbf *dbf = fsf->adapter->dbf;
528 struct fsf_status_read_buffer *srb =
529 (struct fsf_status_read_buffer *) fsf->data;
531 struct scatterlist sg;
533 length = (u16)(srb->length -
534 offsetof(struct fsf_status_read_buffer, payload));
535 sg_init_one(&sg, srb->payload.data, length);
536 zfcp_dbf_san(tag, dbf, "san_els", &sg, ZFCP_DBF_SAN_ELS, length,
537 fsf->req_id, ntoh24(srb->d_id), length);
541 * zfcp_dbf_scsi - trace event for scsi commands
542 * @tag: identifier for event
543 * @sc: pointer to struct scsi_cmnd
544 * @fsf: pointer to struct zfcp_fsf_req
546 void zfcp_dbf_scsi(char *tag, int level, struct scsi_cmnd *sc,
547 struct zfcp_fsf_req *fsf)
549 struct zfcp_adapter *adapter =
550 (struct zfcp_adapter *) sc->device->host->hostdata[0];
551 struct zfcp_dbf *dbf = adapter->dbf;
552 struct zfcp_dbf_scsi *rec = &dbf->scsi_buf;
553 struct fcp_resp_with_ext *fcp_rsp;
554 struct fcp_resp_rsp_info *fcp_rsp_info;
557 spin_lock_irqsave(&dbf->scsi_lock, flags);
558 memset(rec, 0, sizeof(*rec));
560 memcpy(rec->tag, tag, ZFCP_DBF_TAG_LEN);
561 rec->id = ZFCP_DBF_SCSI_CMND;
562 rec->scsi_result = sc->result;
563 rec->scsi_retries = sc->retries;
564 rec->scsi_allowed = sc->allowed;
565 rec->scsi_id = sc->device->id;
566 rec->scsi_lun = (u32)sc->device->lun;
567 rec->scsi_lun_64_hi = (u32)(sc->device->lun >> 32);
568 rec->host_scribble = (unsigned long)sc->host_scribble;
570 memcpy(rec->scsi_opcode, sc->cmnd,
571 min((int)sc->cmd_len, ZFCP_DBF_SCSI_OPCODE));
574 rec->fsf_req_id = fsf->req_id;
575 rec->pl_len = FCP_RESP_WITH_EXT;
576 fcp_rsp = (struct fcp_resp_with_ext *)
577 &(fsf->qtcb->bottom.io.fcp_rsp);
578 /* mandatory parts of FCP_RSP IU in this SCSI record */
579 memcpy(&rec->fcp_rsp, fcp_rsp, FCP_RESP_WITH_EXT);
580 if (fcp_rsp->resp.fr_flags & FCP_RSP_LEN_VAL) {
581 fcp_rsp_info = (struct fcp_resp_rsp_info *) &fcp_rsp[1];
582 rec->fcp_rsp_info = fcp_rsp_info->rsp_code;
583 rec->pl_len += be32_to_cpu(fcp_rsp->ext.fr_rsp_len);
585 if (fcp_rsp->resp.fr_flags & FCP_SNS_LEN_VAL) {
586 rec->pl_len += be32_to_cpu(fcp_rsp->ext.fr_sns_len);
588 /* complete FCP_RSP IU in associated PAYload record
589 * but only if there are optional parts
591 if (fcp_rsp->resp.fr_flags != 0)
594 /* at least one full PAY record
595 * but not beyond hardware response field
597 min_t(u16, max_t(u16, rec->pl_len,
598 ZFCP_DBF_PAY_MAX_REC),
600 "fcp_riu", fsf->req_id);
603 debug_event(dbf->scsi, level, rec, sizeof(*rec));
604 spin_unlock_irqrestore(&dbf->scsi_lock, flags);
607 static debug_info_t *zfcp_dbf_reg(const char *name, int size, int rec_size)
609 struct debug_info *d;
611 d = debug_register(name, size, 1, rec_size);
615 debug_register_view(d, &debug_hex_ascii_view);
616 debug_set_level(d, dbflevel);
621 static void zfcp_dbf_unregister(struct zfcp_dbf *dbf)
626 debug_unregister(dbf->scsi);
627 debug_unregister(dbf->san);
628 debug_unregister(dbf->hba);
629 debug_unregister(dbf->pay);
630 debug_unregister(dbf->rec);
635 * zfcp_adapter_debug_register - registers debug feature for an adapter
636 * @adapter: pointer to adapter for which debug features should be registered
637 * return: -ENOMEM on error, 0 otherwise
639 int zfcp_dbf_adapter_register(struct zfcp_adapter *adapter)
641 char name[DEBUG_MAX_NAME_LEN];
642 struct zfcp_dbf *dbf;
644 dbf = kzalloc(sizeof(struct zfcp_dbf), GFP_KERNEL);
648 spin_lock_init(&dbf->pay_lock);
649 spin_lock_init(&dbf->hba_lock);
650 spin_lock_init(&dbf->san_lock);
651 spin_lock_init(&dbf->scsi_lock);
652 spin_lock_init(&dbf->rec_lock);
654 /* debug feature area which records recovery activity */
655 sprintf(name, "zfcp_%s_rec", dev_name(&adapter->ccw_device->dev));
656 dbf->rec = zfcp_dbf_reg(name, dbfsize, sizeof(struct zfcp_dbf_rec));
660 /* debug feature area which records HBA (FSF and QDIO) conditions */
661 sprintf(name, "zfcp_%s_hba", dev_name(&adapter->ccw_device->dev));
662 dbf->hba = zfcp_dbf_reg(name, dbfsize, sizeof(struct zfcp_dbf_hba));
666 /* debug feature area which records payload info */
667 sprintf(name, "zfcp_%s_pay", dev_name(&adapter->ccw_device->dev));
668 dbf->pay = zfcp_dbf_reg(name, dbfsize * 2, sizeof(struct zfcp_dbf_pay));
672 /* debug feature area which records SAN command failures and recovery */
673 sprintf(name, "zfcp_%s_san", dev_name(&adapter->ccw_device->dev));
674 dbf->san = zfcp_dbf_reg(name, dbfsize, sizeof(struct zfcp_dbf_san));
678 /* debug feature area which records SCSI command failures and recovery */
679 sprintf(name, "zfcp_%s_scsi", dev_name(&adapter->ccw_device->dev));
680 dbf->scsi = zfcp_dbf_reg(name, dbfsize, sizeof(struct zfcp_dbf_scsi));
688 zfcp_dbf_unregister(dbf);
693 * zfcp_adapter_debug_unregister - unregisters debug feature for an adapter
694 * @adapter: pointer to adapter for which debug features should be unregistered
696 void zfcp_dbf_adapter_unregister(struct zfcp_adapter *adapter)
698 struct zfcp_dbf *dbf = adapter->dbf;
701 zfcp_dbf_unregister(dbf);