NetBSD/sys/arch/arc/jazz/timer_jazzio.c

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/* $NetBSD: timer_jazzio.c,v 1.1 2001/06/13 15:02:16 soda Exp $ */
/* $OpenBSD: clock.c,v 1.6 1998/10/15 21:30:15 imp Exp $ */
/*
* Copyright (c) 1997 Per Fogelstrom.
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department and Ralph Campbell.
*
* 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.
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
*
* from: Utah Hdr: clock.c 1.18 91/01/21
*
* from: @(#)clock.c 8.1 (Berkeley) 6/10/93
*/
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <machine/autoconf.h>
#include <machine/platform.h>
#include <dev/isa/isavar.h>
#include <arc/arc/timervar.h>
#include <arc/jazz/jazziovar.h>
#include <arc/jazz/timer_jazziovar.h>
struct timer_jazzio_softc {
struct device sc_dev;
};
/* Definition of the driver for autoconfig. */
int timer_jazzio_match __P((struct device *, struct cfdata *, void *));
void timer_jazzio_attach __P((struct device *, struct device *, void *));
struct cfattach timer_jazzio_ca = {
sizeof(struct timer_jazzio_softc),
timer_jazzio_match, timer_jazzio_attach
};
/* Jazz timer access code */
void timer_jazzio_init __P((struct device *sc));
struct timerfns timerfns_jazzio = {
timer_jazzio_init,
};
struct timer_jazzio_config *timer_jazzio_conf = NULL;
int timer_jazzio_found = 0;
int
timer_jazzio_match(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
struct jazzio_attach_args *ja = aux;
/* make sure that we're looking for this type of device. */
if (strcmp(ja->ja_name, "timer") != 0)
return (0);
if (timer_jazzio_found)
return (0);
return (1);
}
void
timer_jazzio_attach(parent, self, aux)
struct device *parent;
struct device *self;
void *aux;
{
struct timer_jazzio_softc *sc = (struct timer_jazzio_softc *)self;
if (timer_jazzio_conf == NULL)
panic("timer_jazzio_conf isn't initialized");
printf("\n");
(*platform->set_intr)(timer_jazzio_conf->tjc_intr_mask,
timer_jazzio_conf->tjc_intr, 1);
timerattach(&sc->sc_dev, &timerfns_jazzio);
timer_jazzio_found = 1;
}
void
timer_jazzio_init(sc)
struct device *sc;
{
(*timer_jazzio_conf->tjc_init)(1000 / hz);
}