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