include/linux/ftape.h

   1 #ifndef _FTAPE_H
   2 #define _FTAPE_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/include/linux/ftape.h,v $
  24  * $Revision: 1.17.6.4 $
  25  * $Date: 1997/11/25 01:52:54 $
  26  *
  27  *      This file contains global definitions, typedefs and macro's
  28  *      for the QIC-40/80/3010/3020 floppy-tape driver for Linux.
  29  */
  30
  31 #define FTAPE_VERSION "ftape v3.04d 25/11/97"
  32
  33 #ifdef __KERNEL__
  34 #include <linux/interrupt.h>
  35 #include <linux/mm.h>
  36 #endif
  37 #include <linux/types.h>
  38 #include <linux/mtio.h>
  39
  40 #define FT_SECTOR(x)            (x+1)   /* sector offset into real sector */
  41 #define FT_SECTOR_SIZE          1024
  42 #define FT_SECTORS_PER_SEGMENT    32
  43 #define FT_ECC_SECTORS             3
  44 #define FT_SEGMENT_SIZE         ((FT_SECTORS_PER_SEGMENT - FT_ECC_SECTORS) * FT_SECTOR_SIZE)
  45 #define FT_BUFF_SIZE    (FT_SECTORS_PER_SEGMENT * FT_SECTOR_SIZE)
  46
  47 /*
  48  *   bits of the minor device number that define drive selection
  49  *   methods. Could be used one day to access multiple tape
  50  *   drives on the same controller.
  51  */
  52 #define FTAPE_SEL_A     0
  53 #define FTAPE_SEL_B     1
  54 #define FTAPE_SEL_C     2
  55 #define FTAPE_SEL_D     3
  56 #define FTAPE_SEL_MASK     3
  57 #define FTAPE_SEL(unit) ((unit) & FTAPE_SEL_MASK)
  58 #define FTAPE_NO_REWIND 4       /* mask for minor nr */
  59
  60 /* the following two may be reported when MTIOCGET is requested ... */
  61 typedef union {
  62         struct {
  63                 __u8 error;
  64                 __u8 command;
  65         } error;
  66         long space;
  67 } ft_drive_error;
  68 typedef union {
  69         struct {
  70                 __u8 drive_status;
  71                 __u8 drive_config;
  72                 __u8 tape_status;
  73         } status;
  74         long space;
  75 } ft_drive_status;
  76
  77 #ifdef __KERNEL__
  78
  79 #define FT_RQM_DELAY    12
  80 #define FT_MILLISECOND  1
  81 #define FT_SECOND       1000
  82 #define FT_FOREVER      -1
  83 #ifndef HZ
  84 #error "HZ undefined."
  85 #endif
  86 #define FT_USPT         (1000000/HZ) /* microseconds per tick */
  87
  88 /* This defines the number of retries that the driver will allow
  89  * before giving up (and letting a higher level handle the error).
  90  */
  91 #ifdef TESTING
  92 #define FT_SOFT_RETRIES 1          /* number of low level retries */
  93 #define FT_RETRIES_ON_ECC_ERROR 3  /* ecc error when correcting segment */
  94 #else
  95 #define FT_SOFT_RETRIES 6          /* number of low level retries (triple) */
  96 #define FT_RETRIES_ON_ECC_ERROR 3  /* ecc error when correcting segment */
  97 #endif
  98
  99 #ifndef THE_FTAPE_MAINTAINER
 100 #define THE_FTAPE_MAINTAINER "the ftape maintainer"
 101 #endif
 102
 103 /* Initialize missing configuration parameters.
 104  */
 105 #ifndef CONFIG_FT_NR_BUFFERS
 106 # define CONFIG_FT_NR_BUFFERS 3
 107 #endif
 108 #ifndef CONFIG_FT_FDC_THR
 109 # define CONFIG_FT_FDC_THR 8
 110 #endif
 111 #ifndef CONFIG_FT_FDC_MAX_RATE
 112 # define CONFIG_FT_FDC_MAX_RATE 2000
 113 #endif
 114 #ifndef CONFIG_FT_FDC_BASE
 115 # define CONFIG_FT_FDC_BASE 0
 116 #endif
 117 #ifndef CONFIG_FT_FDC_IRQ
 118 # define CONFIG_FT_FDC_IRQ  0
 119 #endif
 120 #ifndef CONFIG_FT_FDC_DMA
 121 # define CONFIG_FT_FDC_DMA  0
 122 #endif
 123
 124 /* Turn some booleans into numbers.
 125  */
 126 #ifdef CONFIG_FT_PROBE_FC10
 127 # undef CONFIG_FT_PROBE_FC10
 128 # define CONFIG_FT_PROBE_FC10 1
 129 #else
 130 # define CONFIG_FT_PROBE_FC10 0
 131 #endif
 132 #ifdef CONFIG_FT_MACH2
 133 # undef CONFIG_FT_MACH2
 134 # define CONFIG_FT_MACH2 1
 135 #else
 136 # define CONFIG_FT_MACH2 0
 137 #endif
 138
 139 /* Insert default settings
 140  */
 141 #if CONFIG_FT_PROBE_FC10 == 1
 142 # if CONFIG_FT_FDC_BASE == 0
 143 #  undef  CONFIG_FT_FDC_BASE
 144 #  define CONFIG_FT_FDC_BASE 0x180
 145 # endif
 146 # if CONFIG_FT_FDC_IRQ == 0
 147 #  undef  CONFIG_FT_FDC_IRQ
 148 #  define CONFIG_FT_FDC_IRQ 9
 149 # endif
 150 # if CONFIG_FT_FDC_DMA == 0
 151 #  undef  CONFIG_FT_FDC_DMA
 152 #  define CONFIG_FT_FDC_DMA 3
 153 # endif
 154 #elif CONFIG_FT_MACH2 == 1    /* CONFIG_FT_PROBE_FC10 == 1 */
 155 # if CONFIG_FT_FDC_BASE == 0
 156 #  undef  CONFIG_FT_FDC_BASE
 157 #  define CONFIG_FT_FDC_BASE 0x1E0
 158 # endif
 159 # if CONFIG_FT_FDC_IRQ == 0
 160 #  undef  CONFIG_FT_FDC_IRQ
 161 #  define CONFIG_FT_FDC_IRQ 6
 162 # endif
 163 # if CONFIG_FT_FDC_DMA == 0
 164 #  undef  CONFIG_FT_FDC_DMA
 165 #  define CONFIG_FT_FDC_DMA 2
 166 # endif
 167 #elif defined(CONFIG_FT_ALT_FDC)  /* CONFIG_FT_MACH2 */
 168 # if CONFIG_FT_FDC_BASE == 0
 169 #  undef  CONFIG_FT_FDC_BASE
 170 #  define CONFIG_FT_FDC_BASE 0x370
 171 # endif
 172 # if CONFIG_FT_FDC_IRQ == 0
 173 #  undef  CONFIG_FT_FDC_IRQ
 174 #  define CONFIG_FT_FDC_IRQ 6
 175 # endif
 176 # if CONFIG_FT_FDC_DMA == 0
 177 #  undef  CONFIG_FT_FDC_DMA
 178 #  define CONFIG_FT_FDC_DMA 2
 179 # endif
 180 #else                          /* CONFIG_FT_ALT_FDC */
 181 # if CONFIG_FT_FDC_BASE == 0
 182 #  undef  CONFIG_FT_FDC_BASE
 183 #  define CONFIG_FT_FDC_BASE 0x3f0
 184 # endif
 185 # if CONFIG_FT_FDC_IRQ == 0
 186 #  undef  CONFIG_FT_FDC_IRQ
 187 #  define CONFIG_FT_FDC_IRQ 6
 188 # endif
 189 # if CONFIG_FT_FDC_DMA == 0
 190 #  undef  CONFIG_FT_FDC_DMA
 191 #  define CONFIG_FT_FDC_DMA 2
 192 # endif
 193 #endif                         /* standard FDC */
 194
 195 /*      some useful macro's
 196  */
 197 #define NR_ITEMS(x)     (int)(sizeof(x)/ sizeof(*x))
 198
 199 #endif  /* __KERNEL__ */
 200
 201 #endif