drivers/char/ftape/lowlevel/ftape-bsm.h

   1 #ifndef _FTAPE_BSM_H
   2 #define _FTAPE_BSM_H
   3
   4 /*
   5  * Copyright (C) 1994-1996 Bas Laarhoven,
   6  *           (C) 1996-1997 Claus-Justus Heine.
   7
   8  This program is free software; you can redistribute it and/or modify
   9  it under the terms of the GNU General Public License as published by
  10  the Free Software Foundation; either version 2, or (at your option)
  11  any later version.
  12
  13  This program is distributed in the hope that it will be useful,
  14  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  GNU General Public License for more details.
  17
  18  You should have received a copy of the GNU General Public License
  19  along with this program; see the file COPYING.  If not, write to
  20  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  21
  22  *
  23  * $Source: /homes/cvs/ftape-stacked/ftape/lowlevel/ftape-bsm.h,v $
  24  * $Revision: 1.2 $
  25  * $Date: 1997/10/05 19:18:07 $
  26  *
  27  *      This file contains definitions for the bad sector map handling
  28  *      routines for the QIC-117 floppy-tape driver for Linux.
  29  */
  30
  31 #include <linux/ftape.h>
  32 #include <linux/ftape-header-segment.h>
  33
  34 #define EMPTY_SEGMENT           (0xffffffff)
  35 #define FAKE_SEGMENT            (0xfffffffe)
  36
  37 /*  maximum (format code 4) bad sector map size (bytes).
  38  */
  39 #define BAD_SECTOR_MAP_SIZE     (29 * SECTOR_SIZE - 256)
  40
  41 /*  format code 4 bad sector entry, ftape uses this
  42  *  internally for all format codes
  43  */
  44 typedef __u32 SectorMap;
  45 /*  variable and 1100 ft bad sector map entry. These three bytes represent
  46  *  a single sector address measured from BOT.
  47  */
  48 typedef struct NewSectorMap {
  49         __u8 bytes[3];
  50 } SectorCount;
  51
  52
  53 /*
  54  *      ftape-bsm.c defined global vars.
  55  */
  56
  57 /*
  58  *      ftape-bsm.c defined global functions.
  59  */
  60 extern void update_bad_sector_map(__u8 * buffer);
  61 extern void ftape_extract_bad_sector_map(__u8 * buffer);
  62 extern SectorMap ftape_get_bad_sector_entry(int segment_id);
  63 extern __u8 *ftape_find_end_of_bsm_list(__u8 * address);
  64 extern void ftape_init_bsm(void);
  65
  66 #endif