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