drivers/s390/net/ctcdbug.c

   1 /*
   2  *
   3  * linux/drivers/s390/net/ctcdbug.c
   4  *
   5  * CTC / ESCON network driver - s390 dbf exploit.
   6  *
   7  * Copyright 2000,2003 IBM Corporation
   8  *
   9  *    Author(s): Original Code written by
  10  *                        Peter Tiedemann (ptiedem@de.ibm.com)
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2, or (at your option)
  15  * any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  25  */
  26
  27 #include "ctcdbug.h"
  28
  29 /**
  30  * Debug Facility Stuff
  31  */
  32 debug_info_t *ctc_dbf_setup = NULL;
  33 debug_info_t *ctc_dbf_data = NULL;
  34 debug_info_t *ctc_dbf_trace = NULL;
  35
  36 DEFINE_PER_CPU(char[256], ctc_dbf_txt_buf);
  37
  38 void
  39 ctc_unregister_dbf_views(void)
  40 {
  41         if (ctc_dbf_setup)
  42                 debug_unregister(ctc_dbf_setup);
  43         if (ctc_dbf_data)
  44                 debug_unregister(ctc_dbf_data);
  45         if (ctc_dbf_trace)
  46                 debug_unregister(ctc_dbf_trace);
  47 }
  48 int
  49 ctc_register_dbf_views(void)
  50 {
  51         ctc_dbf_setup = debug_register(CTC_DBF_SETUP_NAME,
  52                                         CTC_DBF_SETUP_PAGES,
  53                                         CTC_DBF_SETUP_NR_AREAS,
  54                                         CTC_DBF_SETUP_LEN);
  55         ctc_dbf_data = debug_register(CTC_DBF_DATA_NAME,
  56                                        CTC_DBF_DATA_PAGES,
  57                                        CTC_DBF_DATA_NR_AREAS,
  58                                        CTC_DBF_DATA_LEN);
  59         ctc_dbf_trace = debug_register(CTC_DBF_TRACE_NAME,
  60                                         CTC_DBF_TRACE_PAGES,
  61                                         CTC_DBF_TRACE_NR_AREAS,
  62                                         CTC_DBF_TRACE_LEN);
  63
  64         if ((ctc_dbf_setup == NULL) || (ctc_dbf_data == NULL) ||
  65             (ctc_dbf_trace == NULL)) {
  66                 ctc_unregister_dbf_views();
  67                 return -ENOMEM;
  68         }
  69         debug_register_view(ctc_dbf_setup, &debug_hex_ascii_view);
  70         debug_set_level(ctc_dbf_setup, CTC_DBF_SETUP_LEVEL);
  71
  72         debug_register_view(ctc_dbf_data, &debug_hex_ascii_view);
  73         debug_set_level(ctc_dbf_data, CTC_DBF_DATA_LEVEL);
  74
  75         debug_register_view(ctc_dbf_trace, &debug_hex_ascii_view);
  76         debug_set_level(ctc_dbf_trace, CTC_DBF_TRACE_LEVEL);
  77
  78         return 0;
  79 }
  80