SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/s390/scsi/zfcp_dbf.c

   1 /*
   2  * This file is part of the zfcp device driver for
   3  * FCP adapters for IBM System z9 and zSeries.
   4  *
   5  * (C) Copyright IBM Corp. 2002, 2006
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2, or (at your option)
  10  * any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21
  22 #include <linux/ctype.h>
  23 #include <asm/debug.h>
  24 #include "zfcp_ext.h"
  25
  26 static u32 dbfsize = 4;
  27
  28 module_param(dbfsize, uint, 0400);
  29 MODULE_PARM_DESC(dbfsize,
  30                  "number of pages for each debug feature area (default 4)");
  31
  32 #define ZFCP_LOG_AREA                   ZFCP_LOG_AREA_OTHER
  33
  34 static void zfcp_dbf_hexdump(debug_info_t *dbf, void *to, int to_len,
  35                              int level, char *from, int from_len)
  36 {
  37         int offset;
  38         struct zfcp_dbf_dump *dump = to;
  39         int room = to_len - sizeof(*dump);
  40
  41         for (offset = 0; offset < from_len; offset += dump->size) {
  42                 memset(to, 0, to_len);
  43                 strncpy(dump->tag, "dump", ZFCP_DBF_TAG_SIZE);
  44                 dump->total_size = from_len;
  45                 dump->offset = offset;
  46                 dump->size = min(from_len - offset, room);
  47                 memcpy(dump->data, from + offset, dump->size);
  48                 debug_event(dbf, level, dump, dump->size);
  49         }
  50 }
  51
  52 static int
  53 zfcp_dbf_stck(char *out_buf, const char *label, unsigned long long stck)
  54 {
  55         unsigned long long sec;
  56         struct timespec dbftime;
  57         int len = 0;
  58
  59         stck -= 0x8126d60e46000000LL - (0x3c26700LL * 1000000 * 4096);
  60         sec = stck >> 12;
  61         do_div(sec, 1000000);
  62         dbftime.tv_sec = sec;
  63         stck -= (sec * 1000000) << 12;
  64         dbftime.tv_nsec = ((stck * 1000) >> 12);
  65         len += sprintf(out_buf + len, "%-24s%011lu:%06lu\n",
  66                        label, dbftime.tv_sec, dbftime.tv_nsec);
  67
  68         return len;
  69 }
  70
  71 static int zfcp_dbf_tag(char *out_buf, const char *label, const char *tag)
  72 {
  73         int len = 0, i;
  74
  75         len += sprintf(out_buf + len, "%-24s", label);
  76         for (i = 0; i < ZFCP_DBF_TAG_SIZE; i++)
  77                 len += sprintf(out_buf + len, "%c", tag[i]);
  78         len += sprintf(out_buf + len, "\n");
  79
  80         return len;
  81 }
  82
  83 static int
  84 zfcp_dbf_view(char *out_buf, const char *label, const char *format, ...)
  85 {
  86         va_list arg;
  87         int len = 0;
  88
  89         len += sprintf(out_buf + len, "%-24s", label);
  90         va_start(arg, format);
  91         len += vsprintf(out_buf + len, format, arg);
  92         va_end(arg);
  93         len += sprintf(out_buf + len, "\n");
  94
  95         return len;
  96 }
  97
  98 static void zfcp_dbf_outs(char **buf, const char *s1, const char *s2)
  99 {
 100         *buf += sprintf(*buf, "%-24s%s\n", s1, s2);
 101 }
 102
 103 static void zfcp_dbf_out(char **buf, const char *s, const char *format, ...)
 104 {
 105         va_list arg;
 106
 107         *buf += sprintf(*buf, "%-24s", s);
 108         va_start(arg, format);
 109         *buf += vsprintf(*buf, format, arg);
 110         va_end(arg);
 111         *buf += sprintf(*buf, "\n");
 112 }
 113
 114 static int
 115 zfcp_dbf_view_dump(char *out_buf, const char *label,
 116                    char *buffer, int buflen, int offset, int total_size)
 117 {
 118         int len = 0;
 119
 120         if (offset == 0)
 121                 len += sprintf(out_buf + len, "%-24s  ", label);
 122
 123         while (buflen--) {
 124                 if (offset > 0) {
 125                         if ((offset % 32) == 0)
 126                                 len += sprintf(out_buf + len, "\n%-24c  ", ' ');
 127                         else if ((offset % 4) == 0)
 128                                 len += sprintf(out_buf + len, " ");
 129                 }
 130                 len += sprintf(out_buf + len, "%02x", *buffer++);
 131                 if (++offset == total_size) {
 132                         len += sprintf(out_buf + len, "\n");
 133                         break;
 134                 }
 135         }
 136
 137         if (total_size == 0)
 138                 len += sprintf(out_buf + len, "\n");
 139
 140         return len;
 141 }
 142
 143 static int
 144 zfcp_dbf_view_header(debug_info_t * id, struct debug_view *view, int area,
 145                      debug_entry_t * entry, char *out_buf)
 146 {
 147         struct zfcp_dbf_dump *dump = (struct zfcp_dbf_dump *)DEBUG_DATA(entry);
 148         int len = 0;
 149
 150         if (strncmp(dump->tag, "dump", ZFCP_DBF_TAG_SIZE) != 0) {
 151                 len += zfcp_dbf_stck(out_buf + len, "timestamp",
 152                                      entry->id.stck);
 153                 len += zfcp_dbf_view(out_buf + len, "cpu", "%02i",
 154                                      entry->id.fields.cpuid);
 155         } else {
 156                 len += zfcp_dbf_view_dump(out_buf + len, NULL,
 157                                           dump->data,
 158                                           dump->size,
 159                                           dump->offset, dump->total_size);
 160                 if ((dump->offset + dump->size) == dump->total_size)
 161                         len += sprintf(out_buf + len, "\n");
 162         }
 163
 164         return len;
 165 }
 166
 167 void zfcp_hba_dbf_event_fsf_response(struct zfcp_fsf_req *fsf_req)
 168 {
 169         struct zfcp_adapter *adapter = fsf_req->adapter;
 170         struct fsf_qtcb *qtcb = fsf_req->qtcb;
 171         union fsf_prot_status_qual *prot_status_qual =
 172             &qtcb->prefix.prot_status_qual;
 173         union fsf_status_qual *fsf_status_qual = &qtcb->header.fsf_status_qual;
 174         struct scsi_cmnd *scsi_cmnd;
 175         struct zfcp_port *port;
 176         struct zfcp_unit *unit;
 177         struct zfcp_send_els *send_els;
 178         struct zfcp_hba_dbf_record *rec = &adapter->hba_dbf_buf;
 179         struct zfcp_hba_dbf_record_response *response = &rec->type.response;
 180         int level;
 181         unsigned long flags;
 182
 183         spin_lock_irqsave(&adapter->hba_dbf_lock, flags);
 184         memset(rec, 0, sizeof(struct zfcp_hba_dbf_record));
 185         strncpy(rec->tag, "resp", ZFCP_DBF_TAG_SIZE);
 186
 187         if ((qtcb->prefix.prot_status != FSF_PROT_GOOD) &&
 188             (qtcb->prefix.prot_status != FSF_PROT_FSF_STATUS_PRESENTED)) {
 189                 strncpy(rec->tag2, "perr", ZFCP_DBF_TAG_SIZE);
 190                 level = 1;
 191         } else if (qtcb->header.fsf_status != FSF_GOOD) {
 192                 strncpy(rec->tag2, "ferr", ZFCP_DBF_TAG_SIZE);
 193                 level = 1;
 194         } else if ((fsf_req->fsf_command == FSF_QTCB_OPEN_PORT_WITH_DID) ||
 195                    (fsf_req->fsf_command == FSF_QTCB_OPEN_LUN)) {
 196                 strncpy(rec->tag2, "open", ZFCP_DBF_TAG_SIZE);
 197                 level = 4;
 198         } else if (qtcb->header.log_length) {
 199                 strncpy(rec->tag2, "qtcb", ZFCP_DBF_TAG_SIZE);
 200                 level = 5;
 201         } else {
 202                 strncpy(rec->tag2, "norm", ZFCP_DBF_TAG_SIZE);
 203                 level = 6;
 204         }
 205
 206         response->fsf_command = fsf_req->fsf_command;
 207         response->fsf_reqid = (unsigned long)fsf_req;
 208         response->fsf_seqno = fsf_req->seq_no;
 209         response->fsf_issued = fsf_req->issued;
 210         response->fsf_prot_status = qtcb->prefix.prot_status;
 211         response->fsf_status = qtcb->header.fsf_status;
 212         memcpy(response->fsf_prot_status_qual,
 213                prot_status_qual, FSF_PROT_STATUS_QUAL_SIZE);
 214         memcpy(response->fsf_status_qual,
 215                fsf_status_qual, FSF_STATUS_QUALIFIER_SIZE);
 216         response->fsf_req_status = fsf_req->status;
 217         response->sbal_first = fsf_req->sbal_first;
 218         response->sbal_curr = fsf_req->sbal_curr;
 219         response->sbal_last = fsf_req->sbal_last;
 220         response->pool = fsf_req->pool != NULL;
 221         response->erp_action = (unsigned long)fsf_req->erp_action;
 222
 223         switch (fsf_req->fsf_command) {
 224         case FSF_QTCB_FCP_CMND:
 225                 if (fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
 226                         break;
 227                 scsi_cmnd = (struct scsi_cmnd *)fsf_req->data;
 228                 if (scsi_cmnd != NULL) {
 229                         response->data.send_fcp.scsi_cmnd
 230                             = (unsigned long)scsi_cmnd;
 231                         response->data.send_fcp.scsi_serial
 232                             = scsi_cmnd->serial_number;
 233                 }
 234                 break;
 235
 236         case FSF_QTCB_OPEN_PORT_WITH_DID:
 237         case FSF_QTCB_CLOSE_PORT:
 238         case FSF_QTCB_CLOSE_PHYSICAL_PORT:
 239                 port = (struct zfcp_port *)fsf_req->data;
 240                 response->data.port.wwpn = port->wwpn;
 241                 response->data.port.d_id = port->d_id;
 242                 response->data.port.port_handle = qtcb->header.port_handle;
 243                 break;
 244
 245         case FSF_QTCB_OPEN_LUN:
 246         case FSF_QTCB_CLOSE_LUN:
 247                 unit = (struct zfcp_unit *)fsf_req->data;
 248                 port = unit->port;
 249                 response->data.unit.wwpn = port->wwpn;
 250                 response->data.unit.fcp_lun = unit->fcp_lun;
 251                 response->data.unit.port_handle = qtcb->header.port_handle;
 252                 response->data.unit.lun_handle = qtcb->header.lun_handle;
 253                 break;
 254
 255         case FSF_QTCB_SEND_ELS:
 256                 send_els = (struct zfcp_send_els *)fsf_req->data;
 257                 response->data.send_els.d_id = qtcb->bottom.support.d_id;
 258                 response->data.send_els.ls_code = send_els->ls_code >> 24;
 259                 break;
 260
 261         case FSF_QTCB_ABORT_FCP_CMND:
 262         case FSF_QTCB_SEND_GENERIC:
 263         case FSF_QTCB_EXCHANGE_CONFIG_DATA:
 264         case FSF_QTCB_EXCHANGE_PORT_DATA:
 265         case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
 266         case FSF_QTCB_UPLOAD_CONTROL_FILE:
 267                 break;
 268         }
 269
 270         debug_event(adapter->hba_dbf, level,
 271                     rec, sizeof(struct zfcp_hba_dbf_record));
 272
 273         /* have fcp channel microcode fixed to use as little as possible */
 274         if (fsf_req->fsf_command != FSF_QTCB_FCP_CMND) {
 275                 /* adjust length skipping trailing zeros */
 276                 char *buf = (char *)qtcb + qtcb->header.log_start;
 277                 int len = qtcb->header.log_length;
 278                 for (; len && !buf[len - 1]; len--);
 279                 zfcp_dbf_hexdump(adapter->hba_dbf, rec, sizeof(*rec), level,
 280                                  buf, len);
 281         }
 282
 283         spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags);
 284 }
 285
 286 void
 287 zfcp_hba_dbf_event_fsf_unsol(const char *tag, struct zfcp_adapter *adapter,
 288                              struct fsf_status_read_buffer *status_buffer)
 289 {
 290         struct zfcp_hba_dbf_record *rec = &adapter->hba_dbf_buf;
 291         unsigned long flags;
 292
 293         spin_lock_irqsave(&adapter->hba_dbf_lock, flags);
 294         memset(rec, 0, sizeof(struct zfcp_hba_dbf_record));
 295         strncpy(rec->tag, "stat", ZFCP_DBF_TAG_SIZE);
 296         strncpy(rec->tag2, tag, ZFCP_DBF_TAG_SIZE);
 297
 298         rec->type.status.failed = adapter->status_read_failed;
 299         if (status_buffer != NULL) {
 300                 rec->type.status.status_type = status_buffer->status_type;
 301                 rec->type.status.status_subtype = status_buffer->status_subtype;
 302                 memcpy(&rec->type.status.queue_designator,
 303                        &status_buffer->queue_designator,
 304                        sizeof(struct fsf_queue_designator));
 305
 306                 switch (status_buffer->status_type) {
 307                 case FSF_STATUS_READ_SENSE_DATA_AVAIL:
 308                         rec->type.status.payload_size =
 309                             ZFCP_DBF_UNSOL_PAYLOAD_SENSE_DATA_AVAIL;
 310                         break;
 311
 312                 case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
 313                         rec->type.status.payload_size =
 314                             ZFCP_DBF_UNSOL_PAYLOAD_BIT_ERROR_THRESHOLD;
 315                         break;
 316
 317                 case FSF_STATUS_READ_LINK_DOWN:
 318                         switch (status_buffer->status_subtype) {
 319                         case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
 320                         case FSF_STATUS_READ_SUB_FDISC_FAILED:
 321                                 rec->type.status.payload_size =
 322                                         sizeof(struct fsf_link_down_info);
 323                         }
 324                         break;
 325
 326                 case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
 327                         rec->type.status.payload_size =
 328                             ZFCP_DBF_UNSOL_PAYLOAD_FEATURE_UPDATE_ALERT;
 329                         break;
 330                 }
 331                 memcpy(&rec->type.status.payload,
 332                        &status_buffer->payload, rec->type.status.payload_size);
 333         }
 334
 335         debug_event(adapter->hba_dbf, 2,
 336                     rec, sizeof(struct zfcp_hba_dbf_record));
 337         spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags);
 338 }
 339
 340 void
 341 zfcp_hba_dbf_event_qdio(struct zfcp_adapter *adapter, unsigned int status,
 342                         unsigned int qdio_error, unsigned int siga_error,
 343                         int sbal_index, int sbal_count)
 344 {
 345         struct zfcp_hba_dbf_record *rec = &adapter->hba_dbf_buf;
 346         unsigned long flags;
 347
 348         spin_lock_irqsave(&adapter->hba_dbf_lock, flags);
 349         memset(rec, 0, sizeof(struct zfcp_hba_dbf_record));
 350         strncpy(rec->tag, "qdio", ZFCP_DBF_TAG_SIZE);
 351         rec->type.qdio.status = status;
 352         rec->type.qdio.qdio_error = qdio_error;
 353         rec->type.qdio.siga_error = siga_error;
 354         rec->type.qdio.sbal_index = sbal_index;
 355         rec->type.qdio.sbal_count = sbal_count;
 356         debug_event(adapter->hba_dbf, 0,
 357                     rec, sizeof(struct zfcp_hba_dbf_record));
 358         spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags);
 359 }
 360
 361 static int
 362 zfcp_hba_dbf_view_response(char *out_buf,
 363                            struct zfcp_hba_dbf_record_response *rec)
 364 {
 365         int len = 0;
 366
 367         len += zfcp_dbf_view(out_buf + len, "fsf_command", "0x%08x",
 368                              rec->fsf_command);
 369         len += zfcp_dbf_view(out_buf + len, "fsf_reqid", "0x%0Lx",
 370                              rec->fsf_reqid);
 371         len += zfcp_dbf_view(out_buf + len, "fsf_seqno", "0x%08x",
 372                              rec->fsf_seqno);
 373         len += zfcp_dbf_stck(out_buf + len, "fsf_issued", rec->fsf_issued);
 374         len += zfcp_dbf_view(out_buf + len, "fsf_prot_status", "0x%08x",
 375                              rec->fsf_prot_status);
 376         len += zfcp_dbf_view(out_buf + len, "fsf_status", "0x%08x",
 377                              rec->fsf_status);
 378         len += zfcp_dbf_view_dump(out_buf + len, "fsf_prot_status_qual",
 379                                   rec->fsf_prot_status_qual,
 380                                   FSF_PROT_STATUS_QUAL_SIZE,
 381                                   0, FSF_PROT_STATUS_QUAL_SIZE);
 382         len += zfcp_dbf_view_dump(out_buf + len, "fsf_status_qual",
 383                                   rec->fsf_status_qual,
 384                                   FSF_STATUS_QUALIFIER_SIZE,
 385                                   0, FSF_STATUS_QUALIFIER_SIZE);
 386         len += zfcp_dbf_view(out_buf + len, "fsf_req_status", "0x%08x",
 387                              rec->fsf_req_status);
 388         len += zfcp_dbf_view(out_buf + len, "sbal_first", "0x%02x",
 389                              rec->sbal_first);
 390         len += zfcp_dbf_view(out_buf + len, "sbal_curr", "0x%02x",
 391                              rec->sbal_curr);
 392         len += zfcp_dbf_view(out_buf + len, "sbal_last", "0x%02x",
 393                              rec->sbal_last);
 394         len += zfcp_dbf_view(out_buf + len, "pool", "0x%02x", rec->pool);
 395
 396         switch (rec->fsf_command) {
 397         case FSF_QTCB_FCP_CMND:
 398                 if (rec->fsf_req_status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
 399                         break;
 400                 len += zfcp_dbf_view(out_buf + len, "scsi_cmnd", "0x%0Lx",
 401                                      rec->data.send_fcp.scsi_cmnd);
 402                 len += zfcp_dbf_view(out_buf + len, "scsi_serial", "0x%016Lx",
 403                                      rec->data.send_fcp.scsi_serial);
 404                 break;
 405
 406         case FSF_QTCB_OPEN_PORT_WITH_DID:
 407         case FSF_QTCB_CLOSE_PORT:
 408         case FSF_QTCB_CLOSE_PHYSICAL_PORT:
 409                 len += zfcp_dbf_view(out_buf + len, "wwpn", "0x%016Lx",
 410                                      rec->data.port.wwpn);
 411                 len += zfcp_dbf_view(out_buf + len, "d_id", "0x%06x",
 412                                      rec->data.port.d_id);
 413                 len += zfcp_dbf_view(out_buf + len, "port_handle", "0x%08x",
 414                                      rec->data.port.port_handle);
 415                 break;
 416
 417         case FSF_QTCB_OPEN_LUN:
 418         case FSF_QTCB_CLOSE_LUN:
 419                 len += zfcp_dbf_view(out_buf + len, "wwpn", "0x%016Lx",
 420                                      rec->data.unit.wwpn);
 421                 len += zfcp_dbf_view(out_buf + len, "fcp_lun", "0x%016Lx",
 422                                      rec->data.unit.fcp_lun);
 423                 len += zfcp_dbf_view(out_buf + len, "port_handle", "0x%08x",
 424                                      rec->data.unit.port_handle);
 425                 len += zfcp_dbf_view(out_buf + len, "lun_handle", "0x%08x",
 426                                      rec->data.unit.lun_handle);
 427                 break;
 428
 429         case FSF_QTCB_SEND_ELS:
 430                 len += zfcp_dbf_view(out_buf + len, "d_id", "0x%06x",
 431                                      rec->data.send_els.d_id);
 432                 len += zfcp_dbf_view(out_buf + len, "ls_code", "0x%02x",
 433                                      rec->data.send_els.ls_code);
 434                 break;
 435
 436         case FSF_QTCB_ABORT_FCP_CMND:
 437         case FSF_QTCB_SEND_GENERIC:
 438         case FSF_QTCB_EXCHANGE_CONFIG_DATA:
 439         case FSF_QTCB_EXCHANGE_PORT_DATA:
 440         case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
 441         case FSF_QTCB_UPLOAD_CONTROL_FILE:
 442                 break;
 443         }
 444
 445         return len;
 446 }
 447
 448 static int
 449 zfcp_hba_dbf_view_status(char *out_buf, struct zfcp_hba_dbf_record_status *rec)
 450 {
 451         int len = 0;
 452
 453         len += zfcp_dbf_view(out_buf + len, "failed", "0x%02x", rec->failed);
 454         len += zfcp_dbf_view(out_buf + len, "status_type", "0x%08x",
 455                              rec->status_type);
 456         len += zfcp_dbf_view(out_buf + len, "status_subtype", "0x%08x",
 457                              rec->status_subtype);
 458         len += zfcp_dbf_view_dump(out_buf + len, "queue_designator",
 459                                   (char *)&rec->queue_designator,
 460                                   sizeof(struct fsf_queue_designator),
 461                                   0, sizeof(struct fsf_queue_designator));
 462         len += zfcp_dbf_view_dump(out_buf + len, "payload",
 463                                   (char *)&rec->payload,
 464                                   rec->payload_size, 0, rec->payload_size);
 465
 466         return len;
 467 }
 468
 469 static int
 470 zfcp_hba_dbf_view_qdio(char *out_buf, struct zfcp_hba_dbf_record_qdio *rec)
 471 {
 472         int len = 0;
 473
 474         len += zfcp_dbf_view(out_buf + len, "status", "0x%08x", rec->status);
 475         len += zfcp_dbf_view(out_buf + len, "qdio_error", "0x%08x",
 476                              rec->qdio_error);
 477         len += zfcp_dbf_view(out_buf + len, "siga_error", "0x%08x",
 478                              rec->siga_error);
 479         len += zfcp_dbf_view(out_buf + len, "sbal_index", "0x%02x",
 480                              rec->sbal_index);
 481         len += zfcp_dbf_view(out_buf + len, "sbal_count", "0x%02x",
 482                              rec->sbal_count);
 483
 484         return len;
 485 }
 486
 487 static int
 488 zfcp_hba_dbf_view_format(debug_info_t * id, struct debug_view *view,
 489                          char *out_buf, const char *in_buf)
 490 {
 491         struct zfcp_hba_dbf_record *rec = (struct zfcp_hba_dbf_record *)in_buf;
 492         int len = 0;
 493
 494         if (strncmp(rec->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
 495                 return 0;
 496
 497         len += zfcp_dbf_tag(out_buf + len, "tag", rec->tag);
 498         if (isalpha(rec->tag2[0]))
 499                 len += zfcp_dbf_tag(out_buf + len, "tag2", rec->tag2);
 500         if (strncmp(rec->tag, "resp", ZFCP_DBF_TAG_SIZE) == 0)
 501                 len += zfcp_hba_dbf_view_response(out_buf + len,
 502                                                   &rec->type.response);
 503         else if (strncmp(rec->tag, "stat", ZFCP_DBF_TAG_SIZE) == 0)
 504                 len += zfcp_hba_dbf_view_status(out_buf + len,
 505                                                 &rec->type.status);
 506         else if (strncmp(rec->tag, "qdio", ZFCP_DBF_TAG_SIZE) == 0)
 507                 len += zfcp_hba_dbf_view_qdio(out_buf + len, &rec->type.qdio);
 508
 509         len += sprintf(out_buf + len, "\n");
 510
 511         return len;
 512 }
 513
 514 static struct debug_view zfcp_hba_dbf_view = {
 515         "structured",
 516         NULL,
 517         &zfcp_dbf_view_header,
 518         &zfcp_hba_dbf_view_format,
 519         NULL,
 520         NULL
 521 };
 522
 523 static const char *zfcp_rec_dbf_tags[] = {
 524 };
 525
 526 static const char *zfcp_rec_dbf_ids[] = {
 527 };
 528
 529 static int zfcp_rec_dbf_view_format(debug_info_t *id, struct debug_view *view,
 530                                     char *buf, const char *_rec)
 531 {
 532         struct zfcp_rec_dbf_record *r = (struct zfcp_rec_dbf_record *)_rec;
 533         char *p = buf;
 534
 535         zfcp_dbf_outs(&p, "tag", zfcp_rec_dbf_tags[r->id]);
 536         zfcp_dbf_outs(&p, "hint", zfcp_rec_dbf_ids[r->id2]);
 537         zfcp_dbf_out(&p, "id", "%d", r->id2);
 538         switch (r->id) {
 539         }
 540         sprintf(p, "\n");
 541         return (p - buf) + 1;
 542 }
 543
 544 static struct debug_view zfcp_rec_dbf_view = {
 545         "structured",
 546         NULL,
 547         &zfcp_dbf_view_header,
 548         &zfcp_rec_dbf_view_format,
 549         NULL,
 550         NULL
 551 };
 552
 553 static void
 554 _zfcp_san_dbf_event_common_ct(const char *tag, struct zfcp_fsf_req *fsf_req,
 555                               u32 s_id, u32 d_id, void *buffer, int buflen)
 556 {
 557         struct zfcp_send_ct *send_ct = (struct zfcp_send_ct *)fsf_req->data;
 558         struct zfcp_port *port = send_ct->port;
 559         struct zfcp_adapter *adapter = port->adapter;
 560         struct ct_hdr *header = (struct ct_hdr *)buffer;
 561         struct zfcp_san_dbf_record *rec = &adapter->san_dbf_buf;
 562         struct zfcp_san_dbf_record_ct *ct = &rec->type.ct;
 563         unsigned long flags;
 564
 565         spin_lock_irqsave(&adapter->san_dbf_lock, flags);
 566         memset(rec, 0, sizeof(struct zfcp_san_dbf_record));
 567         strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
 568         rec->fsf_reqid = (unsigned long)fsf_req;
 569         rec->fsf_seqno = fsf_req->seq_no;
 570         rec->s_id = s_id;
 571         rec->d_id = d_id;
 572         if (strncmp(tag, "octc", ZFCP_DBF_TAG_SIZE) == 0) {
 573                 ct->type.request.cmd_req_code = header->cmd_rsp_code;
 574                 ct->type.request.revision = header->revision;
 575                 ct->type.request.gs_type = header->gs_type;
 576                 ct->type.request.gs_subtype = header->gs_subtype;
 577                 ct->type.request.options = header->options;
 578                 ct->type.request.max_res_size = header->max_res_size;
 579         } else if (strncmp(tag, "rctc", ZFCP_DBF_TAG_SIZE) == 0) {
 580                 ct->type.response.cmd_rsp_code = header->cmd_rsp_code;
 581                 ct->type.response.revision = header->revision;
 582                 ct->type.response.reason_code = header->reason_code;
 583                 ct->type.response.reason_code_expl = header->reason_code_expl;
 584                 ct->type.response.vendor_unique = header->vendor_unique;
 585         }
 586         ct->payload_size =
 587             min(buflen - (int)sizeof(struct ct_hdr), ZFCP_DBF_CT_PAYLOAD);
 588         memcpy(ct->payload, buffer + sizeof(struct ct_hdr), ct->payload_size);
 589         debug_event(adapter->san_dbf, 3,
 590                     rec, sizeof(struct zfcp_san_dbf_record));
 591         spin_unlock_irqrestore(&adapter->san_dbf_lock, flags);
 592 }
 593
 594 void zfcp_san_dbf_event_ct_request(struct zfcp_fsf_req *fsf_req)
 595 {
 596         struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data;
 597         struct zfcp_port *port = ct->port;
 598         struct zfcp_adapter *adapter = port->adapter;
 599
 600         _zfcp_san_dbf_event_common_ct("octc", fsf_req,
 601                                       fc_host_port_id(adapter->scsi_host),
 602                                       port->d_id, zfcp_sg_to_address(ct->req),
 603                                       ct->req->length);
 604 }
 605
 606 void zfcp_san_dbf_event_ct_response(struct zfcp_fsf_req *fsf_req)
 607 {
 608         struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data;
 609         struct zfcp_port *port = ct->port;
 610         struct zfcp_adapter *adapter = port->adapter;
 611
 612         _zfcp_san_dbf_event_common_ct("rctc", fsf_req, port->d_id,
 613                                       fc_host_port_id(adapter->scsi_host),
 614                                       zfcp_sg_to_address(ct->resp),
 615                                       ct->resp->length);
 616 }
 617
 618 static void
 619 _zfcp_san_dbf_event_common_els(const char *tag, int level,
 620                                struct zfcp_fsf_req *fsf_req, u32 s_id,
 621                                u32 d_id, u8 ls_code, void *buffer, int buflen)
 622 {
 623         struct zfcp_adapter *adapter = fsf_req->adapter;
 624         struct zfcp_san_dbf_record *rec = &adapter->san_dbf_buf;
 625         unsigned long flags;
 626
 627         spin_lock_irqsave(&adapter->san_dbf_lock, flags);
 628         memset(rec, 0, sizeof(struct zfcp_san_dbf_record));
 629         strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
 630         rec->fsf_reqid = (unsigned long)fsf_req;
 631         rec->fsf_seqno = fsf_req->seq_no;
 632         rec->s_id = s_id;
 633         rec->d_id = d_id;
 634         rec->type.els.ls_code = ls_code;
 635         debug_event(adapter->san_dbf, level, rec, sizeof(*rec));
 636         zfcp_dbf_hexdump(adapter->san_dbf, rec, sizeof(*rec), level,
 637                          buffer, min(buflen, ZFCP_DBF_ELS_MAX_PAYLOAD));
 638         spin_unlock_irqrestore(&adapter->san_dbf_lock, flags);
 639 }
 640
 641 void zfcp_san_dbf_event_els_request(struct zfcp_fsf_req *fsf_req)
 642 {
 643         struct zfcp_send_els *els = (struct zfcp_send_els *)fsf_req->data;
 644
 645         _zfcp_san_dbf_event_common_els("oels", 2, fsf_req,
 646                                        fc_host_port_id(els->adapter->scsi_host),
 647                                        els->d_id,
 648                                        *(u8 *) zfcp_sg_to_address(els->req),
 649                                        zfcp_sg_to_address(els->req),
 650                                        els->req->length);
 651 }
 652
 653 void zfcp_san_dbf_event_els_response(struct zfcp_fsf_req *fsf_req)
 654 {
 655         struct zfcp_send_els *els = (struct zfcp_send_els *)fsf_req->data;
 656
 657         _zfcp_san_dbf_event_common_els("rels", 2, fsf_req, els->d_id,
 658                                        fc_host_port_id(els->adapter->scsi_host),
 659                                        *(u8 *) zfcp_sg_to_address(els->req),
 660                                        zfcp_sg_to_address(els->resp),
 661                                        els->resp->length);
 662 }
 663
 664 void zfcp_san_dbf_event_incoming_els(struct zfcp_fsf_req *fsf_req)
 665 {
 666         struct zfcp_adapter *adapter = fsf_req->adapter;
 667         struct fsf_status_read_buffer *status_buffer =
 668             (struct fsf_status_read_buffer *)fsf_req->data;
 669         int length = (int)status_buffer->length -
 670             (int)((void *)&status_buffer->payload - (void *)status_buffer);
 671
 672         _zfcp_san_dbf_event_common_els("iels", 1, fsf_req, status_buffer->d_id,
 673                                        fc_host_port_id(adapter->scsi_host),
 674                                        *(u8 *) status_buffer->payload,
 675                                        (void *)status_buffer->payload, length);
 676 }
 677
 678 static int
 679 zfcp_san_dbf_view_format(debug_info_t * id, struct debug_view *view,
 680                          char *out_buf, const char *in_buf)
 681 {
 682         struct zfcp_san_dbf_record *rec = (struct zfcp_san_dbf_record *)in_buf;
 683         char *buffer = NULL;
 684         int buflen = 0, total = 0;
 685         int len = 0;
 686
 687         if (strncmp(rec->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
 688                 return 0;
 689
 690         len += zfcp_dbf_tag(out_buf + len, "tag", rec->tag);
 691         len += zfcp_dbf_view(out_buf + len, "fsf_reqid", "0x%0Lx",
 692                              rec->fsf_reqid);
 693         len += zfcp_dbf_view(out_buf + len, "fsf_seqno", "0x%08x",
 694                              rec->fsf_seqno);
 695         len += zfcp_dbf_view(out_buf + len, "s_id", "0x%06x", rec->s_id);
 696         len += zfcp_dbf_view(out_buf + len, "d_id", "0x%06x", rec->d_id);
 697
 698         if (strncmp(rec->tag, "octc", ZFCP_DBF_TAG_SIZE) == 0) {
 699                 len += zfcp_dbf_view(out_buf + len, "cmd_req_code", "0x%04x",
 700                                      rec->type.ct.type.request.cmd_req_code);
 701                 len += zfcp_dbf_view(out_buf + len, "revision", "0x%02x",
 702                                      rec->type.ct.type.request.revision);
 703                 len += zfcp_dbf_view(out_buf + len, "gs_type", "0x%02x",
 704                                      rec->type.ct.type.request.gs_type);
 705                 len += zfcp_dbf_view(out_buf + len, "gs_subtype", "0x%02x",
 706                                      rec->type.ct.type.request.gs_subtype);
 707                 len += zfcp_dbf_view(out_buf + len, "options", "0x%02x",
 708                                      rec->type.ct.type.request.options);
 709                 len += zfcp_dbf_view(out_buf + len, "max_res_size", "0x%04x",
 710                                      rec->type.ct.type.request.max_res_size);
 711                 total = rec->type.ct.payload_size;
 712                 buffer = rec->type.ct.payload;
 713                 buflen = min(total, ZFCP_DBF_CT_PAYLOAD);
 714         } else if (strncmp(rec->tag, "rctc", ZFCP_DBF_TAG_SIZE) == 0) {
 715                 len += zfcp_dbf_view(out_buf + len, "cmd_rsp_code", "0x%04x",
 716                                      rec->type.ct.type.response.cmd_rsp_code);
 717                 len += zfcp_dbf_view(out_buf + len, "revision", "0x%02x",
 718                                      rec->type.ct.type.response.revision);
 719                 len += zfcp_dbf_view(out_buf + len, "reason_code", "0x%02x",
 720                                      rec->type.ct.type.response.reason_code);
 721                 len +=
 722                     zfcp_dbf_view(out_buf + len, "reason_code_expl", "0x%02x",
 723                                   rec->type.ct.type.response.reason_code_expl);
 724                 len +=
 725                     zfcp_dbf_view(out_buf + len, "vendor_unique", "0x%02x",
 726                                   rec->type.ct.type.response.vendor_unique);
 727                 total = rec->type.ct.payload_size;
 728                 buffer = rec->type.ct.payload;
 729                 buflen = min(total, ZFCP_DBF_CT_PAYLOAD);
 730         } else if (strncmp(rec->tag, "oels", ZFCP_DBF_TAG_SIZE) == 0 ||
 731                    strncmp(rec->tag, "rels", ZFCP_DBF_TAG_SIZE) == 0 ||
 732                    strncmp(rec->tag, "iels", ZFCP_DBF_TAG_SIZE) == 0) {
 733                 len += zfcp_dbf_view(out_buf + len, "ls_code", "0x%02x",
 734                                      rec->type.els.ls_code);
 735                 total = rec->type.els.payload_size;
 736                 buffer = rec->type.els.payload;
 737                 buflen = min(total, ZFCP_DBF_ELS_PAYLOAD);
 738         }
 739
 740         len += zfcp_dbf_view_dump(out_buf + len, "payload",
 741                                   buffer, buflen, 0, total);
 742
 743         if (buflen == total)
 744                 len += sprintf(out_buf + len, "\n");
 745
 746         return len;
 747 }
 748
 749 static struct debug_view zfcp_san_dbf_view = {
 750         "structured",
 751         NULL,
 752         &zfcp_dbf_view_header,
 753         &zfcp_san_dbf_view_format,
 754         NULL,
 755         NULL
 756 };
 757
 758 static void
 759 _zfcp_scsi_dbf_event_common(const char *tag, const char *tag2, int level,
 760                             struct zfcp_adapter *adapter,
 761                             struct scsi_cmnd *scsi_cmnd,
 762                             struct zfcp_fsf_req *fsf_req,
 763                             unsigned long old_req_id)
 764 {
 765         struct zfcp_scsi_dbf_record *rec = &adapter->scsi_dbf_buf;
 766         struct zfcp_dbf_dump *dump = (struct zfcp_dbf_dump *)rec;
 767         unsigned long flags;
 768         struct fcp_rsp_iu *fcp_rsp;
 769         char *fcp_rsp_info = NULL, *fcp_sns_info = NULL;
 770         int offset = 0, buflen = 0;
 771
 772         spin_lock_irqsave(&adapter->scsi_dbf_lock, flags);
 773         do {
 774                 memset(rec, 0, sizeof(struct zfcp_scsi_dbf_record));
 775                 if (offset == 0) {
 776                         strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
 777                         strncpy(rec->tag2, tag2, ZFCP_DBF_TAG_SIZE);
 778                         if (scsi_cmnd != NULL) {
 779                                 if (scsi_cmnd->device) {
 780                                         rec->scsi_id = scsi_cmnd->device->id;
 781                                         rec->scsi_lun = scsi_cmnd->device->lun;
 782                                 }
 783                                 rec->scsi_result = scsi_cmnd->result;
 784                                 rec->scsi_cmnd = (unsigned long)scsi_cmnd;
 785                                 rec->scsi_serial = scsi_cmnd->serial_number;
 786                                 memcpy(rec->scsi_opcode, &scsi_cmnd->cmnd,
 787                                         min((int)scsi_cmnd->cmd_len,
 788                                                 ZFCP_DBF_SCSI_OPCODE));
 789                                 rec->scsi_retries = scsi_cmnd->retries;
 790                                 rec->scsi_allowed = scsi_cmnd->allowed;
 791                         }
 792                         if (fsf_req != NULL) {
 793                                 fcp_rsp = (struct fcp_rsp_iu *)
 794                                     &(fsf_req->qtcb->bottom.io.fcp_rsp);
 795                                 fcp_rsp_info =
 796                                     zfcp_get_fcp_rsp_info_ptr(fcp_rsp);
 797                                 fcp_sns_info =
 798                                     zfcp_get_fcp_sns_info_ptr(fcp_rsp);
 799
 800                                 rec->type.fcp.rsp_validity =
 801                                     fcp_rsp->validity.value;
 802                                 rec->type.fcp.rsp_scsi_status =
 803                                     fcp_rsp->scsi_status;
 804                                 rec->type.fcp.rsp_resid = fcp_rsp->fcp_resid;
 805                                 if (fcp_rsp->validity.bits.fcp_rsp_len_valid)
 806                                         rec->type.fcp.rsp_code =
 807                                             *(fcp_rsp_info + 3);
 808                                 if (fcp_rsp->validity.bits.fcp_sns_len_valid) {
 809                                         buflen = min((int)fcp_rsp->fcp_sns_len,
 810                                                      ZFCP_DBF_SCSI_MAX_FCP_SNS_INFO);
 811                                         rec->type.fcp.sns_info_len = buflen;
 812                                         memcpy(rec->type.fcp.sns_info,
 813                                                fcp_sns_info,
 814                                                min(buflen,
 815                                                    ZFCP_DBF_SCSI_FCP_SNS_INFO));
 816                                         offset += min(buflen,
 817                                                       ZFCP_DBF_SCSI_FCP_SNS_INFO);
 818                                 }
 819
 820                                 rec->fsf_reqid = (unsigned long)fsf_req;
 821                                 rec->fsf_seqno = fsf_req->seq_no;
 822                                 rec->fsf_issued = fsf_req->issued;
 823                         }
 824                         rec->type.old_fsf_reqid = old_req_id;
 825                 } else {
 826                         strncpy(dump->tag, "dump", ZFCP_DBF_TAG_SIZE);
 827                         dump->total_size = buflen;
 828                         dump->offset = offset;
 829                         dump->size = min(buflen - offset,
 830                                          (int)sizeof(struct
 831                                                      zfcp_scsi_dbf_record) -
 832                                          (int)sizeof(struct zfcp_dbf_dump));
 833                         memcpy(dump->data, fcp_sns_info + offset, dump->size);
 834                         offset += dump->size;
 835                 }
 836                 debug_event(adapter->scsi_dbf, level,
 837                             rec, sizeof(struct zfcp_scsi_dbf_record));
 838         } while (offset < buflen);
 839         spin_unlock_irqrestore(&adapter->scsi_dbf_lock, flags);
 840 }
 841
 842 void
 843 zfcp_scsi_dbf_event_result(const char *tag, int level,
 844                            struct zfcp_adapter *adapter,
 845                            struct scsi_cmnd *scsi_cmnd,
 846                            struct zfcp_fsf_req *fsf_req)
 847 {
 848         _zfcp_scsi_dbf_event_common("rslt", tag, level,
 849                         adapter, scsi_cmnd, fsf_req, 0);
 850 }
 851
 852 void
 853 zfcp_scsi_dbf_event_abort(const char *tag, struct zfcp_adapter *adapter,
 854                           struct scsi_cmnd *scsi_cmnd,
 855                           struct zfcp_fsf_req *new_fsf_req,
 856                           unsigned long old_req_id)
 857 {
 858         _zfcp_scsi_dbf_event_common("abrt", tag, 1,
 859                         adapter, scsi_cmnd, new_fsf_req, old_req_id);
 860 }
 861
 862 void
 863 zfcp_scsi_dbf_event_devreset(const char *tag, u8 flag, struct zfcp_unit *unit,
 864                              struct scsi_cmnd *scsi_cmnd)
 865 {
 866         struct zfcp_adapter *adapter = unit->port->adapter;
 867
 868         _zfcp_scsi_dbf_event_common(flag == FCP_TARGET_RESET ? "trst" : "lrst",
 869                         tag, 1, adapter, scsi_cmnd, NULL, 0);
 870 }
 871
 872 static int
 873 zfcp_scsi_dbf_view_format(debug_info_t * id, struct debug_view *view,
 874                           char *out_buf, const char *in_buf)
 875 {
 876         struct zfcp_scsi_dbf_record *rec =
 877             (struct zfcp_scsi_dbf_record *)in_buf;
 878         int len = 0;
 879
 880         if (strncmp(rec->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
 881                 return 0;
 882
 883         len += zfcp_dbf_tag(out_buf + len, "tag", rec->tag);
 884         len += zfcp_dbf_tag(out_buf + len, "tag2", rec->tag2);
 885         len += zfcp_dbf_view(out_buf + len, "scsi_id", "0x%08x", rec->scsi_id);
 886         len += zfcp_dbf_view(out_buf + len, "scsi_lun", "0x%08x",
 887                              rec->scsi_lun);
 888         len += zfcp_dbf_view(out_buf + len, "scsi_result", "0x%08x",
 889                              rec->scsi_result);
 890         len += zfcp_dbf_view(out_buf + len, "scsi_cmnd", "0x%0Lx",
 891                              rec->scsi_cmnd);
 892         len += zfcp_dbf_view(out_buf + len, "scsi_serial", "0x%016Lx",
 893                              rec->scsi_serial);
 894         len += zfcp_dbf_view_dump(out_buf + len, "scsi_opcode",
 895                                   rec->scsi_opcode,
 896                                   ZFCP_DBF_SCSI_OPCODE,
 897                                   0, ZFCP_DBF_SCSI_OPCODE);
 898         len += zfcp_dbf_view(out_buf + len, "scsi_retries", "0x%02x",
 899                              rec->scsi_retries);
 900         len += zfcp_dbf_view(out_buf + len, "scsi_allowed", "0x%02x",
 901                              rec->scsi_allowed);
 902         if (strncmp(rec->tag, "abrt", ZFCP_DBF_TAG_SIZE) == 0) {
 903                 len += zfcp_dbf_view(out_buf + len, "old_fsf_reqid", "0x%0Lx",
 904                                      rec->type.old_fsf_reqid);
 905         }
 906         len += zfcp_dbf_view(out_buf + len, "fsf_reqid", "0x%0Lx",
 907                              rec->fsf_reqid);
 908         len += zfcp_dbf_view(out_buf + len, "fsf_seqno", "0x%08x",
 909                              rec->fsf_seqno);
 910         len += zfcp_dbf_stck(out_buf + len, "fsf_issued", rec->fsf_issued);
 911         if (strncmp(rec->tag, "rslt", ZFCP_DBF_TAG_SIZE) == 0) {
 912                 len +=
 913                     zfcp_dbf_view(out_buf + len, "fcp_rsp_validity", "0x%02x",
 914                                   rec->type.fcp.rsp_validity);
 915                 len +=
 916                     zfcp_dbf_view(out_buf + len, "fcp_rsp_scsi_status",
 917                                   "0x%02x", rec->type.fcp.rsp_scsi_status);
 918                 len +=
 919                     zfcp_dbf_view(out_buf + len, "fcp_rsp_resid", "0x%08x",
 920                                   rec->type.fcp.rsp_resid);
 921                 len +=
 922                     zfcp_dbf_view(out_buf + len, "fcp_rsp_code", "0x%08x",
 923                                   rec->type.fcp.rsp_code);
 924                 len +=
 925                     zfcp_dbf_view(out_buf + len, "fcp_sns_info_len", "0x%08x",
 926                                   rec->type.fcp.sns_info_len);
 927                 len +=
 928                     zfcp_dbf_view_dump(out_buf + len, "fcp_sns_info",
 929                                        rec->type.fcp.sns_info,
 930                                        min((int)rec->type.fcp.sns_info_len,
 931                                            ZFCP_DBF_SCSI_FCP_SNS_INFO), 0,
 932                                        rec->type.fcp.sns_info_len);
 933         }
 934
 935         len += sprintf(out_buf + len, "\n");
 936
 937         return len;
 938 }
 939
 940 static struct debug_view zfcp_scsi_dbf_view = {
 941         "structured",
 942         NULL,
 943         &zfcp_dbf_view_header,
 944         &zfcp_scsi_dbf_view_format,
 945         NULL,
 946         NULL
 947 };
 948
 949 /**
 950  * zfcp_adapter_debug_register - registers debug feature for an adapter
 951  * @adapter: pointer to adapter for which debug features should be registered
 952  * return: -ENOMEM on error, 0 otherwise
 953  */
 954 int zfcp_adapter_debug_register(struct zfcp_adapter *adapter)
 955 {
 956         char dbf_name[DEBUG_MAX_NAME_LEN];
 957
 958         /* debug feature area which records recovery activity */
 959         sprintf(dbf_name, "zfcp_%s_erp", zfcp_get_busid_by_adapter(adapter));
 960         adapter->erp_dbf = debug_register(dbf_name, dbfsize, 2,
 961                                           sizeof(struct zfcp_erp_dbf_record));
 962         if (!adapter->erp_dbf)
 963                 goto failed;
 964         debug_register_view(adapter->erp_dbf, &debug_hex_ascii_view);
 965         debug_set_level(adapter->erp_dbf, 3);
 966
 967         /* debug feature area which records recovery activity */
 968         sprintf(dbf_name, "zfcp_%s_rec", zfcp_get_busid_by_adapter(adapter));
 969         adapter->rec_dbf = debug_register(dbf_name, dbfsize, 1,
 970                                           sizeof(struct zfcp_rec_dbf_record));
 971         if (!adapter->rec_dbf)
 972                 goto failed;
 973         debug_register_view(adapter->rec_dbf, &debug_hex_ascii_view);
 974         debug_register_view(adapter->rec_dbf, &zfcp_rec_dbf_view);
 975         debug_set_level(adapter->rec_dbf, 3);
 976
 977         /* debug feature area which records HBA (FSF and QDIO) conditions */
 978         sprintf(dbf_name, "zfcp_%s_hba", zfcp_get_busid_by_adapter(adapter));
 979         adapter->hba_dbf = debug_register(dbf_name, dbfsize, 1,
 980                                           sizeof(struct zfcp_hba_dbf_record));
 981         if (!adapter->hba_dbf)
 982                 goto failed;
 983         debug_register_view(adapter->hba_dbf, &debug_hex_ascii_view);
 984         debug_register_view(adapter->hba_dbf, &zfcp_hba_dbf_view);
 985         debug_set_level(adapter->hba_dbf, 3);
 986
 987         /* debug feature area which records SAN command failures and recovery */
 988         sprintf(dbf_name, "zfcp_%s_san", zfcp_get_busid_by_adapter(adapter));
 989         adapter->san_dbf = debug_register(dbf_name, dbfsize, 1,
 990                                           sizeof(struct zfcp_san_dbf_record));
 991         if (!adapter->san_dbf)
 992                 goto failed;
 993         debug_register_view(adapter->san_dbf, &debug_hex_ascii_view);
 994         debug_register_view(adapter->san_dbf, &zfcp_san_dbf_view);
 995         debug_set_level(adapter->san_dbf, 6);
 996
 997         /* debug feature area which records SCSI command failures and recovery */
 998         sprintf(dbf_name, "zfcp_%s_scsi", zfcp_get_busid_by_adapter(adapter));
 999         adapter->scsi_dbf = debug_register(dbf_name, dbfsize, 1,
1000                                            sizeof(struct zfcp_scsi_dbf_record));
1001         if (!adapter->scsi_dbf)
1002                 goto failed;
1003         debug_register_view(adapter->scsi_dbf, &debug_hex_ascii_view);
1004         debug_register_view(adapter->scsi_dbf, &zfcp_scsi_dbf_view);
1005         debug_set_level(adapter->scsi_dbf, 3);
1006
1007         return 0;
1008
1009  failed:
1010         zfcp_adapter_debug_unregister(adapter);
1011
1012         return -ENOMEM;
1013 }
1014
1015 /**
1016  * zfcp_adapter_debug_unregister - unregisters debug feature for an adapter
1017  * @adapter: pointer to adapter for which debug features should be unregistered
1018  */
1019 void zfcp_adapter_debug_unregister(struct zfcp_adapter *adapter)
1020 {
1021         debug_unregister(adapter->scsi_dbf);
1022         debug_unregister(adapter->san_dbf);
1023         debug_unregister(adapter->hba_dbf);
1024         debug_unregister(adapter->rec_dbf);
1025         debug_unregister(adapter->erp_dbf);
1026         adapter->scsi_dbf = NULL;
1027         adapter->san_dbf = NULL;
1028         adapter->hba_dbf = NULL;
1029         adapter->rec_dbf = NULL;
1030         adapter->erp_dbf = NULL;
1031 }
1032
1033 #undef ZFCP_LOG_AREA