136 lines
4.0 KiB
C
136 lines
4.0 KiB
C
/* $NetBSD: aurtc.c,v 1.5 2002/10/02 15:52:24 thorpej Exp $ */
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/*
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* Copyright 2002 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Simon Burge for Wasabi Systems, Inc.
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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 for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* 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 WASABI SYSTEMS, INC
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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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#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 <dev/clock_subr.h>
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#include <evbmips/evbmips/clockvar.h>
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#include <mips/alchemy/include/aureg.h>
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#include <mips/alchemy/include/aubusvar.h>
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static int aurtc_match(struct device *, struct cfdata *, void *);
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static void aurtc_attach(struct device *, struct device *, void *);
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static void aurtc_init(struct device *);
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static void aurtc_get(struct device *, time_t, struct clocktime *);
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static void aurtc_set(struct device *, struct clocktime *);
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CFATTACH_DECL(aurtc, sizeof (struct device),
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aurtc_match, aurtc_attach, NULL, NULL);
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const struct clockfns aurtc_clockfns = {
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aurtc_init, aurtc_get, aurtc_set,
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};
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int
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aurtc_match(struct device *parent, struct cfdata *match, void *aux)
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{
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struct aubus_attach_args *aa = aux;
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if (strcmp(aa->aa_name, match->cf_name) == 0)
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return (1);
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return (0);
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}
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void
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aurtc_attach(struct device *parent, struct device *self, void *aux)
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{
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printf(": Au1X00 programmable clock"); /* \n in clockattach */
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clockattach(self, &aurtc_clockfns);
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}
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void
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aurtc_init(struct device *dev)
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{
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/* We don't use the aurtc for the hardclock interrupt. */
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}
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/*
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* Note the fake "aurtc" on the Alchemy pb1000 uses a different year base.
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*/
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#define PB1000_YEAR_OFFSET 100
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/*
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* Get the time of day, based on the clock's value and/or the base value.
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*/
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void
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aurtc_get(struct device *dev, time_t base, struct clocktime *ct)
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{
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struct clock_ymdhms ymdhms;
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time_t secs;
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secs = *(u_int32_t *)MIPS_PHYS_TO_KSEG1(PC_BASE + PC_COUNTER_READ_0);
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clock_secs_to_ymdhms(secs, &ymdhms);
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ct->sec = ymdhms.dt_sec;
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ct->min = ymdhms.dt_min;
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ct->hour = ymdhms.dt_hour;
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ct->dow = ymdhms.dt_wday;
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ct->day = ymdhms.dt_day;
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ct->mon = ymdhms.dt_mon;
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ct->year = ymdhms.dt_year - PB1000_YEAR_OFFSET;
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}
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/*
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* Reset the TODR based on the time value.
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*/
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void
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aurtc_set(struct device *dev, struct clocktime *ct)
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{
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struct clock_ymdhms ymdhms;
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time_t secs;
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ymdhms.dt_sec = ct->sec;
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ymdhms.dt_min = ct->min;
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ymdhms.dt_hour = ct->hour;
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ymdhms.dt_wday = ct->dow;
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ymdhms.dt_day = ct->day;
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ymdhms.dt_mon = ct->mon;
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ymdhms.dt_year = ct->year + PB1000_YEAR_OFFSET;
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secs = clock_ymdhms_to_secs(&ymdhms);
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*(u_int32_t *)MIPS_PHYS_TO_KSEG1(PC_BASE + PC_COUNTER_READ_0) = secs;
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}
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