drivers/net/skfp/can.c

   1 /******************************************************************************
   2  *
   3  *      (C)Copyright 1998,1999 SysKonnect,
   4  *      a business unit of Schneider & Koch & Co. Datensysteme GmbH.
   5  *
   6  *      See the file "skfddi.c" for further information.
   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 of the License, or
  11  *      (at your option) any later version.
  12  *
  13  *      The information in this file is provided "AS IS" without warranty.
  14  *
  15  ******************************************************************************/
  16
  17 #ifndef lint
  18 static const char xID_sccs[] = "@(#)can.c       1.5 97/04/07 (C) SK " ;
  19 #endif
  20
  21 /*
  22  * canonical bit order
  23  */
  24 const u_char canonical[256] = {
  25         0x00,0x80,0x40,0xc0,0x20,0xa0,0x60,0xe0,
  26         0x10,0x90,0x50,0xd0,0x30,0xb0,0x70,0xf0,
  27         0x08,0x88,0x48,0xc8,0x28,0xa8,0x68,0xe8,
  28         0x18,0x98,0x58,0xd8,0x38,0xb8,0x78,0xf8,
  29         0x04,0x84,0x44,0xc4,0x24,0xa4,0x64,0xe4,
  30         0x14,0x94,0x54,0xd4,0x34,0xb4,0x74,0xf4,
  31         0x0c,0x8c,0x4c,0xcc,0x2c,0xac,0x6c,0xec,
  32         0x1c,0x9c,0x5c,0xdc,0x3c,0xbc,0x7c,0xfc,
  33         0x02,0x82,0x42,0xc2,0x22,0xa2,0x62,0xe2,
  34         0x12,0x92,0x52,0xd2,0x32,0xb2,0x72,0xf2,
  35         0x0a,0x8a,0x4a,0xca,0x2a,0xaa,0x6a,0xea,
  36         0x1a,0x9a,0x5a,0xda,0x3a,0xba,0x7a,0xfa,
  37         0x06,0x86,0x46,0xc6,0x26,0xa6,0x66,0xe6,
  38         0x16,0x96,0x56,0xd6,0x36,0xb6,0x76,0xf6,
  39         0x0e,0x8e,0x4e,0xce,0x2e,0xae,0x6e,0xee,
  40         0x1e,0x9e,0x5e,0xde,0x3e,0xbe,0x7e,0xfe,
  41         0x01,0x81,0x41,0xc1,0x21,0xa1,0x61,0xe1,
  42         0x11,0x91,0x51,0xd1,0x31,0xb1,0x71,0xf1,
  43         0x09,0x89,0x49,0xc9,0x29,0xa9,0x69,0xe9,
  44         0x19,0x99,0x59,0xd9,0x39,0xb9,0x79,0xf9,
  45         0x05,0x85,0x45,0xc5,0x25,0xa5,0x65,0xe5,
  46         0x15,0x95,0x55,0xd5,0x35,0xb5,0x75,0xf5,
  47         0x0d,0x8d,0x4d,0xcd,0x2d,0xad,0x6d,0xed,
  48         0x1d,0x9d,0x5d,0xdd,0x3d,0xbd,0x7d,0xfd,
  49         0x03,0x83,0x43,0xc3,0x23,0xa3,0x63,0xe3,
  50         0x13,0x93,0x53,0xd3,0x33,0xb3,0x73,0xf3,
  51         0x0b,0x8b,0x4b,0xcb,0x2b,0xab,0x6b,0xeb,
  52         0x1b,0x9b,0x5b,0xdb,0x3b,0xbb,0x7b,0xfb,
  53         0x07,0x87,0x47,0xc7,0x27,0xa7,0x67,0xe7,
  54         0x17,0x97,0x57,0xd7,0x37,0xb7,0x77,0xf7,
  55         0x0f,0x8f,0x4f,0xcf,0x2f,0xaf,0x6f,0xef,
  56         0x1f,0x9f,0x5f,0xdf,0x3f,0xbf,0x7f,0xff
  57 } ;
  58
  59 #ifdef  MAKE_TABLE
  60 int byte_reverse(x)
  61 int x ;
  62 {
  63         int     y = 0 ;
  64
  65         if (x & 0x01)
  66                 y |= 0x80 ;
  67         if (x & 0x02)
  68                 y |= 0x40 ;
  69         if (x & 0x04)
  70                 y |= 0x20 ;
  71         if (x & 0x08)
  72                 y |= 0x10 ;
  73         if (x & 0x10)
  74                 y |= 0x08 ;
  75         if (x & 0x20)
  76                 y |= 0x04 ;
  77         if (x & 0x40)
  78                 y |= 0x02 ;
  79         if (x & 0x80)
  80                 y |= 0x01 ;
  81         return(y) ;
  82 }
  83 #endif