drivers/char/rio/riotime.h

   1 /****************************************************************************
   2  *******                                                              *******
   3  *******            T I M E
   4  *******                                                              *******
   5  ****************************************************************************
   6
   7  Author  : Jeremy Rolls
   8  Date    :
   9
  10  *
  11  *  (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK.
  12  *
  13
  14  *      This program is free software; you can redistribute it and/or modify
  15  *      it under the terms of the GNU General Public License as published by
  16  *      the Free Software Foundation; either version 2 of the License, or
  17  *      (at your option) any later version.
  18  *
  19  *      This program is distributed in the hope that it will be useful,
  20  *      but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  *      GNU General Public License for more details.
  23  *
  24  *      You should have received a copy of the GNU General Public License
  25  *      along with this program; if not, write to the Free Software
  26  *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  27
  28  Version : 0.01
  29
  30
  31                             Mods
  32  ----------------------------------------------------------------------------
  33   Date     By                Description
  34  ----------------------------------------------------------------------------
  35
  36  ***************************************************************************/
  37
  38 #ifndef _riotime_h
  39 #define _riotime_h 1
  40
  41 #ifndef lint
  42 #ifdef SCCS
  43 static char *_rio_riotime_h_sccs = "@(#)riotime.h       1.1" ;
  44 #endif
  45 #endif
  46
  47 #define TWO_POWER_FIFTEEN (ushort)32768
  48 #define RioTime()    riotime
  49 #define RioTimeAfter(time1,time2) ((ushort)time1 - (ushort)time2) < TWO_POWER_FIFTEEN
  50 #define RioTimePlus(time1,time2) ((ushort)time1 + (ushort)time2)
  51
  52 /**************************************
  53  * Convert a RIO tick (1/10th second)
  54  * into transputer low priority ticks
  55  *************************************/
  56 #define RioTimeToLow(time) (time*(100000 / 64))
  57 #define RioLowToTime(time) ((time*64)/100000)
  58
  59 #define RIOTENTHSECOND (ushort)1
  60 #define RIOSECOND (ushort)(RIOTENTHSECOND * 10)
  61 #endif
  62
  63 /*********** end of file ***********/