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/* $NetBSD: mcclock_ioasic.c,v 1.2 1996/04/17 22:22:58 cgd Exp $ */
/*
* Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <alpha/alpha/clockvar.h>
#include <alpha/alpha/mcclockvar.h>
#include <dev/ic/mc146818reg.h>
#include <dev/tc/tcreg.h>
#include <dev/tc/tcvar.h>
#include <dev/tc/ioasicvar.h> /* XXX */
struct mcclock_ioasic_clockdatum {
u_char datum;
char pad[3];
};
struct mcclock_ioasic_softc {
struct mcclock_softc sc_mcclock;
struct mcclock_ioasic_clockdatum *sc_dp;
};
int mcclock_ioasic_match __P((struct device *, void *, void *));
void mcclock_ioasic_attach __P((struct device *, struct device *, void *));
struct cfattach mcclock_ioasic_ca = {
sizeof (struct mcclock_ioasic_softc), mcclock_ioasic_match,
mcclock_ioasic_attach,
};
void mcclock_ioasic_write __P((struct mcclock_softc *, u_int, u_int));
u_int mcclock_ioasic_read __P((struct mcclock_softc *, u_int));
const struct mcclock_busfns mcclock_ioasic_busfns = {
mcclock_ioasic_write, mcclock_ioasic_read,
};
int
mcclock_ioasic_match(parent, match, aux)
struct device *parent;
void *match, *aux;
{
struct ioasicdev_attach_args *d = aux;
if (strncmp("TOY_RTC ", d->iada_modname, TC_ROM_LLEN))
return (0);
return (1);
}
void
mcclock_ioasic_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct ioasicdev_attach_args *ioasicdev = aux;
struct mcclock_ioasic_softc *sc = (struct mcclock_ioasic_softc *)self;
sc->sc_dp = (struct mcclock_ioasic_clockdatum *)ioasicdev->iada_addr;
mcclock_attach(&sc->sc_mcclock, &mcclock_ioasic_busfns);
}
void
mcclock_ioasic_write(dev, reg, datum)
struct mcclock_softc *dev;
u_int reg, datum;
{
struct mcclock_ioasic_softc *sc = (struct mcclock_ioasic_softc *)dev;
sc->sc_dp[reg].datum = datum;
}
u_int
mcclock_ioasic_read(dev, reg)
struct mcclock_softc *dev;
u_int reg;
{
struct mcclock_ioasic_softc *sc = (struct mcclock_ioasic_softc *)dev;
return (sc->sc_dp[reg].datum);
}
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