210 lines
7.0 KiB
C
210 lines
7.0 KiB
C
/* $NetBSD: mcclock_mace.c,v 1.4 2002/01/14 16:26:44 pooka Exp $ */
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/*
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* Copyright (c) 2001 Antti Kantee. 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. 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. The name of the company nor the name of the author may be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY CAUASLITY LIMITED ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL CAUSALITY LIMITED OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1998 Mark Brinicombe.
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* Copyright (c) 1998 Causality Limited.
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* All rights reserved.
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*
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* Written by Mark Brinicombe, Causality Limited
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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 Mark Brinicombe
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* for the NetBSD Project.
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* 4. The name of the company nor the name of the author may be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY CAUASLITY LIMITED ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL CAUSALITY LIMITED OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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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 <machine/cpu.h>
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#include <machine/autoconf.h>
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#include <machine/bus.h>
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#include <machine/machtype.h>
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#include <dev/clock_subr.h>
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#include <dev/ic/mc146818reg.h>
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#include <sgimips/dev/macevar.h>
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#include <sgimips/sgimips/clockvar.h>
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/*
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* Following register acts different in MC146818A, that's why it's
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* not found in mc146818reg.h, and we must define it separately.
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*/
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#define MC_REGA_DV1 0x20
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struct mcclock_mace_softc {
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struct device sc_dev;
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bus_space_tag_t sc_st;
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bus_space_handle_t sc_sh;
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};
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static int mcclock_mace_match(struct device *, struct cfdata *, void *);
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static void mcclock_mace_attach(struct device*, struct device *, void *);
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static void mcclock_mace_init(struct device *);
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static void mcclock_mace_get(struct device *, struct clock_ymdhms *);
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static void mcclock_mace_set(struct device *, struct clock_ymdhms *);
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unsigned int mc146818_read(void *arg, unsigned int addr);
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void mc146818_write(void *arg, unsigned int addr, unsigned int data);
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const struct clockfns mcclock_mace_clockfns = {
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mcclock_mace_init, mcclock_mace_get, mcclock_mace_set
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};
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struct cfattach mcclock_mace_ca = {
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sizeof(struct mcclock_mace_softc),
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mcclock_mace_match,
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mcclock_mace_attach
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};
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static int
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mcclock_mace_match(struct device *parent, struct cfdata *match, void *aux)
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{
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return 1;
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}
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void
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mcclock_mace_attach(struct device *parent, struct device *self, void *aux)
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{
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struct mcclock_mace_softc *sc = (void *)self;
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struct mace_attach_args *maa = aux;
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sc->sc_st = maa->maa_st;
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sc->sc_sh = maa->maa_sh;
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mc146818_write(sc, MC_REGA, MC_REGA_DV1);
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mc146818_write(sc, MC_REGB, MC_REGB_BINARY | MC_REGB_24HR);
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if (!(mc146818_read(sc, MC_REGD) & MC_REGD_VRT))
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printf(": lithium cell is dead, RTC unreliable");
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printf("\n");
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clockattach(&sc->sc_dev, &mcclock_mace_clockfns);
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}
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/*
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* We need to use the following two functions from
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* MC146818_PUT/GETTOD(). Hence the names.
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*/
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unsigned int
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mc146818_read(void *arg, unsigned int addr)
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{
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struct mcclock_mace_softc *sc = (struct mcclock_mace_softc *)arg;
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return (bus_space_read_1(sc->sc_st, sc->sc_sh, addr));
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}
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void
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mc146818_write(void *arg, unsigned int addr, unsigned int data)
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{
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struct mcclock_mace_softc *sc = (struct mcclock_mace_softc *)arg;
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bus_space_write_1(sc->sc_st, sc->sc_sh, addr, data);
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}
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static void
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mcclock_mace_init(struct device *dev)
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{
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return;
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}
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static void
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mcclock_mace_get(struct device *dev, struct clock_ymdhms *dt)
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{
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struct mcclock_mace_softc *sc = (struct mcclock_mace_softc *)dev;
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mc_todregs regs;
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int s;
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s = splhigh();
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MC146818_GETTOD(sc, ®s);
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splx(s);
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dt->dt_sec = FROMBCD(regs[MC_SEC]);
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dt->dt_min = FROMBCD(regs[MC_MIN]);
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dt->dt_hour = FROMBCD(regs[MC_HOUR]);
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dt->dt_wday = FROMBCD(regs[MC_DOW]);
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dt->dt_day = FROMBCD(regs[MC_DOM]);
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dt->dt_mon = FROMBCD(regs[MC_MONTH]);
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dt->dt_year = FROM_IRIX_YEAR(FROMBCD(regs[MC_YEAR]));
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}
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static void
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mcclock_mace_set(struct device *dev, struct clock_ymdhms *dt)
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{
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struct mcclock_mace_softc *sc = (struct mcclock_mace_softc *)dev;
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mc_todregs regs;
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int s;
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memset(®s, 0, sizeof(regs));
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regs[MC_SEC] = TOBCD(dt->dt_sec);
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regs[MC_MIN] = TOBCD(dt->dt_min);
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regs[MC_HOUR] = TOBCD(dt->dt_hour);
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regs[MC_DOW] = TOBCD(dt->dt_wday);
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regs[MC_DOM] = TOBCD(dt->dt_day);
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regs[MC_MONTH] = TOBCD(dt->dt_mon);
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regs[MC_YEAR] = TOBCD(TO_IRIX_YEAR(dt->dt_year));
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s = splhigh();
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MC146818_PUTTOD(sc, ®s);
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splx(s);
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}
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