linux/drivers/char/rio/riotime.h

64 lines
2.2 KiB
C

/****************************************************************************
******* *******
******* T I M E
******* *******
****************************************************************************
Author : Jeremy Rolls
Date :
*
* (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
Version : 0.01
Mods
----------------------------------------------------------------------------
Date By Description
----------------------------------------------------------------------------
***************************************************************************/
#ifndef _riotime_h
#define _riotime_h 1
#ifndef lint
#ifdef SCCS
static char *_rio_riotime_h_sccs = "@(#)riotime.h 1.1" ;
#endif
#endif
#define TWO_POWER_FIFTEEN (ushort)32768
#define RioTime() riotime
#define RioTimeAfter(time1,time2) ((ushort)time1 - (ushort)time2) < TWO_POWER_FIFTEEN
#define RioTimePlus(time1,time2) ((ushort)time1 + (ushort)time2)
/**************************************
* Convert a RIO tick (1/10th second)
* into transputer low priority ticks
*************************************/
#define RioTimeToLow(time) (time*(100000 / 64))
#define RioLowToTime(time) ((time*64)/100000)
#define RIOTENTHSECOND (ushort)1
#define RIOSECOND (ushort)(RIOTENTHSECOND * 10)
#endif
/*********** end of file ***********/