NetBSD/sys/arch/prep/isa/joy_timer.c

76 lines
2.3 KiB
C

/* $NetBSD: joy_timer.c,v 1.1 2002/02/02 18:37:41 jdolecek Exp $ */
/*
* XXX This _really_ should be rewritten such that it doesn't
* XXX rely in the i386 timer!
*/
/*-
* Copyright (c) 1995 Jean-Marc Zucconi
* All rights reserved.
*
* Ported to NetBSD by Matthieu Herrb <matthieu@laas.fr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer
* in this position and unchanged.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/errno.h>
#include <machine/bus.h>
#include <machine/cpu.h>
#include <machine/pio.h>
#include <machine/joystick.h>
#include <machine/conf.h>
#include <dev/isa/isavar.h>
#include <dev/isa/isareg.h>
#include <dev/ic/i8253reg.h>
#include <dev/ic/joyvar.h>
int
joy_get_tick()
{
int low, high;
isa_outb(IO_TIMER1 + TIMER_MODE, TIMER_SEL0);
low = isa_inb(IO_TIMER1 + TIMER_CNTR0);
high = isa_inb(IO_TIMER1 + TIMER_CNTR0);
return (high << 8) | low;
}
int
joy_timer_freq()
{
return (TIMER_FREQ);
}