NetBSD/sys/arch/mipsco/obio/mkclock.c

168 lines
4.7 KiB
C

/* $NetBSD: mkclock.c,v 1.4 2002/10/02 05:38:11 thorpej Exp $ */
/*-
* Copyright (c) 2000 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Wayne Knowles
*
* 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 NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/systm.h>
#include <dev/clock_subr.h>
#include <machine/cpu.h>
#include <machine/mainboard.h>
#include <machine/autoconf.h>
#include <machine/sysconf.h>
#include <machine/bus.h>
#include <mipsco/obio/clockreg.h>
struct mkclock_softc {
struct device dev;
bus_space_tag_t sc_bst;
bus_space_handle_t sc_bsh;
};
static int mkclock_match (struct device *, struct cfdata *, void *);
static void mkclock_attach (struct device *, struct device *, void *);
CFATTACH_DECL(mkclock, sizeof(struct mkclock_softc),
mkclock_match, mkclock_attach, NULL, NULL);
static struct mkclock_softc *mk0;
void mkclock_read (struct clock_ymdhms *);
void mkclock_write (struct clock_ymdhms *);
static int mk_read (struct mkclock_softc *, int);
static void mk_write (struct mkclock_softc *, int, int);
int
mkclock_match(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
return 1;
}
void
mkclock_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct mkclock_softc *sc = (void *)self;
struct confargs *ca = aux;
sc->sc_bst = ca->ca_bustag;
if (bus_space_map(ca->ca_bustag, ca->ca_addr,
0x10000,
BUS_SPACE_MAP_LINEAR,
&sc->sc_bsh) != 0) {
printf(": cannot map registers\n");
return;
}
platform.write_todr = mkclock_write;
platform.read_todr = mkclock_read;
mk0 = sc;
printf("\n");
}
static int
mk_read(sc, reg)
struct mkclock_softc *sc;
int reg;
{
u_int8_t val;
val = bus_space_read_1(sc->sc_bst, sc->sc_bsh, DATA_PORT + reg*4);
return FROMBCD(val);
}
static void
mk_write(sc, reg, val)
struct mkclock_softc *sc;
int reg, val;
{
bus_space_write_1(sc->sc_bst, sc->sc_bsh,
DATA_PORT + reg*4, TOBCD(val));
}
void
mkclock_read(dt)
struct clock_ymdhms *dt;
{
struct mkclock_softc *sc = mk0;
int s = splclock();
bus_space_write_1(sc->sc_bst, sc->sc_bsh, RTC_PORT, READ_CLOCK);
dt->dt_sec = mk_read(sc, 0);
dt->dt_min = mk_read(sc, 1);
dt->dt_hour = mk_read(sc, 2);
dt->dt_wday = mk_read(sc, 3);
dt->dt_day = mk_read(sc, 4);
dt->dt_mon = mk_read(sc, 5);
dt->dt_year = mk_read(sc, 6);
bus_space_write_1(sc->sc_bst, sc->sc_bsh, RTC_PORT, 0);
splx(s);
dt->dt_year = dt->dt_year + (dt->dt_year >= 70 ? 1900 : 2000);
}
void
mkclock_write(dt)
struct clock_ymdhms *dt;
{
struct mkclock_softc *sc = mk0;
int year, s;
year = dt->dt_year % 100;
s = splclock();
bus_space_write_1(sc->sc_bst, sc->sc_bsh, RTC_PORT, SET_CLOCK);
mk_write(sc, 0, dt->dt_sec);
mk_write(sc, 1, dt->dt_min);
mk_write(sc, 2, dt->dt_hour);
/* week day not set */
mk_write(sc, 4, dt->dt_day);
mk_write(sc, 5, dt->dt_mon);
mk_write(sc, 6, year);
bus_space_write_1(sc->sc_bst, sc->sc_bsh, RTC_PORT, 0);
splx(s);
}