NetBSD/sys/arch/mvme68k/dev/timekeeper.c

122 lines
3.7 KiB
C

/* $NetBSD: timekeeper.c,v 1.3 2002/02/23 17:18:54 scw Exp $ */
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Steve C. Woodford.
*
* 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.
*/
/*
* Attachment interface for the Time-Keeper RAMs on mvme boards.
*
* XXXSCW: Needs to be extended to allow read/write to NVRAM by
* userland application.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/conf.h>
#include <machine/cpu.h>
#include <machine/bus.h>
#include <dev/mvme/clockvar.h>
#include <mvme68k/dev/mainbus.h>
struct timekeeper_softc {
struct device sc_dev;
bus_space_tag_t sc_bust;
bus_space_handle_t sc_bush;
bus_size_t sc_size;
};
int timekeeper_match(struct device *, struct cfdata *, void *);
void timekeeper_attach(struct device *, struct device *, void *);
struct cfattach timekeeper_ca = {
sizeof(struct timekeeper_softc), timekeeper_match, timekeeper_attach
};
extern struct cfdriver timekeeper_cd;
int
timekeeper_match(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct mainbus_attach_args *ma = aux;
if (strcmp(ma->ma_name, timekeeper_cd.cd_name))
return (0);
return (1);
}
void
timekeeper_attach(parent, self, aux)
struct device *parent;
struct device *self;
void *aux;
{
struct timekeeper_softc *sc = (struct timekeeper_softc *)self;
struct mainbus_attach_args *ma = aux;
todr_chip_handle_t todr;
const char *model;
sc->sc_bust = ma->ma_bust;
if (machineid == MVME_147) {
sc->sc_size = MK48T02_CLKSZ;
model = "mk48t02";
} else {
sc->sc_size = MK48T08_CLKSZ;
model = "mk48t08";
}
bus_space_map(ma->ma_bust, ma->ma_offset, sc->sc_size, 0, &sc->sc_bush);
todr = mk48txx_attach(sc->sc_bust, sc->sc_bush, model, YEAR0,
NULL, NULL);
if (todr == NULL)
panic("\ntimekeeper_attach");
printf(" Time-Keeper RAM\n");
printf("%s: %ld bytes NVRAM plus Realtime Clock\n",
sc->sc_dev.dv_xname, sc->sc_size);
clock_rtc_config(todr);
}