148 lines
4.1 KiB
C
148 lines
4.1 KiB
C
/* $NetBSD: clock_ap.c,v 1.4 2002/10/02 04:27:51 thorpej Exp $ */
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/*-
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* Copyright (C) 1999 Tsubai Masanari. All rights reserved.
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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. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <dev/clock_subr.h>
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#include <machine/adrsmap.h>
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#include <newsmips/apbus/apbusvar.h>
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#include <newsmips/newsmips/clockvar.h>
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#include <newsmips/newsmips/clockreg.h>
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struct clock_ap_softc {
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struct device sc_dev;
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u_int32_t *sc_addr;
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};
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int clock_ap_match __P((struct device *, struct cfdata *, void *));
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void clock_ap_attach __P((struct device *, struct device *, void *));
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CFATTACH_DECL(mkclock_ap, sizeof(struct clock_ap_softc),
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clock_ap_match, clock_ap_attach, NULL, NULL);
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static void clockinit __P((struct device *));
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static void clockget __P((struct device *, struct clock_ymdhms *));
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static void clockset __P((struct device *, struct clock_ymdhms *));
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struct clockfns clockfns_ap = {
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clockinit, clockget, clockset
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};
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int
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clock_ap_match(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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void *aux;
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{
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struct apbus_attach_args *apa = aux;
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if (strcmp("clock", apa->apa_name) != 0)
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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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clock_ap_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct clock_ap_softc *sc = (void *)self;
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struct apbus_attach_args *apa = aux;
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printf(" slot%d addr 0x%lx\n", apa->apa_slotno, apa->apa_hwbase);
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sc->sc_addr = (void *)apa->apa_hwbase;
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clockattach(&sc->sc_dev, &clockfns_ap);
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}
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/*
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* Enable the real-time clock.
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*/
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void
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clockinit(dev)
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struct device *dev;
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{
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*(volatile u_int *)NEWS5000_INTEN2 = NEWS5000_INT2_TIMER0;
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}
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void
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clockget(dev, dt)
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struct device *dev;
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struct clock_ymdhms *dt;
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{
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struct clock_ap_softc *sc = (void *)dev;
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volatile u_int *rtc_port = sc->sc_addr;
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volatile u_int *rtc_data = rtc_port + 1;
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u_int8_t x;
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int s;
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s = splclock();
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*rtc_port = READ_CLOCK;
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x = *rtc_data++; dt->dt_sec = FROMBCD(x);
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x = *rtc_data++; dt->dt_min = FROMBCD(x);
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x = *rtc_data++; dt->dt_hour = FROMBCD(x);
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x = *rtc_data++; dt->dt_wday = x - 1;
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x = *rtc_data++; dt->dt_day = FROMBCD(x);
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x = *rtc_data++; dt->dt_mon = FROMBCD(x);
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x = *rtc_data++; dt->dt_year = FROMBCD(x);
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*rtc_port = 0;
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splx(s);
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dt->dt_year = dt->dt_year + (dt->dt_year >= 70 ? 1900 : 2000);
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}
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void
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clockset(dev, dt)
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struct device *dev;
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struct clock_ymdhms *dt;
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{
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struct clock_ap_softc *sc = (void *)dev;
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volatile u_int *rtc_port = sc->sc_addr;
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volatile u_int *rtc_data = rtc_port + 1;
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int year, s;
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year = dt->dt_year % 100;
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s = splclock();
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*rtc_port = SET_CLOCK;
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*rtc_data++ = TOBCD(dt->dt_sec);
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*rtc_data++ = TOBCD(dt->dt_min);
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*rtc_data++ = TOBCD(dt->dt_hour);
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*rtc_data++ = dt->dt_wday + 1;
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*rtc_data++ = TOBCD(dt->dt_day);
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*rtc_data++ = TOBCD(dt->dt_mon);
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*rtc_data++ = TOBCD(year);
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*rtc_port = 0;
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splx(s);
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}
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