122 lines
3.7 KiB
C
122 lines
3.7 KiB
C
/* $NetBSD: timekeeper.c,v 1.3 2002/02/23 17:18:54 scw Exp $ */
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/*-
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* Copyright (c) 2001 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Steve C. Woodford.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Attachment interface for the Time-Keeper RAMs on mvme boards.
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*
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* XXXSCW: Needs to be extended to allow read/write to NVRAM by
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* userland application.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/conf.h>
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#include <machine/cpu.h>
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#include <machine/bus.h>
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#include <dev/mvme/clockvar.h>
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#include <mvme68k/dev/mainbus.h>
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struct timekeeper_softc {
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struct device sc_dev;
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bus_space_tag_t sc_bust;
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bus_space_handle_t sc_bush;
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bus_size_t sc_size;
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};
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int timekeeper_match(struct device *, struct cfdata *, void *);
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void timekeeper_attach(struct device *, struct device *, void *);
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struct cfattach timekeeper_ca = {
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sizeof(struct timekeeper_softc), timekeeper_match, timekeeper_attach
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};
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extern struct cfdriver timekeeper_cd;
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int
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timekeeper_match(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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{
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struct mainbus_attach_args *ma = aux;
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if (strcmp(ma->ma_name, timekeeper_cd.cd_name))
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return (0);
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return (1);
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}
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void
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timekeeper_attach(parent, self, aux)
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struct device *parent;
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struct device *self;
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void *aux;
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{
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struct timekeeper_softc *sc = (struct timekeeper_softc *)self;
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struct mainbus_attach_args *ma = aux;
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todr_chip_handle_t todr;
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const char *model;
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sc->sc_bust = ma->ma_bust;
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if (machineid == MVME_147) {
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sc->sc_size = MK48T02_CLKSZ;
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model = "mk48t02";
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} else {
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sc->sc_size = MK48T08_CLKSZ;
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model = "mk48t08";
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}
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bus_space_map(ma->ma_bust, ma->ma_offset, sc->sc_size, 0, &sc->sc_bush);
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todr = mk48txx_attach(sc->sc_bust, sc->sc_bush, model, YEAR0,
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NULL, NULL);
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if (todr == NULL)
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panic("\ntimekeeper_attach");
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printf(" Time-Keeper RAM\n");
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printf("%s: %ld bytes NVRAM plus Realtime Clock\n",
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sc->sc_dev.dv_xname, sc->sc_size);
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clock_rtc_config(todr);
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}
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