121 lines
2.9 KiB
C
121 lines
2.9 KiB
C
|
/* $NetBSD: mcclock.c,v 1.1 2001/06/13 15:02:12 soda Exp $ */
|
||
|
|
/* NetBSD: mcclock.c,v 1.12 1999/01/15 23:29:55 thorpej Exp */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* Author: Chris G. Demetriou
|
||
|
|
*
|
||
|
|
* Permission to use, copy, modify and distribute this software and
|
||
|
|
* its documentation is hereby granted, provided that both the copyright
|
||
|
|
* notice and this permission notice appear in all copies of the
|
||
|
|
* software, derivative works or modified versions, and any portions
|
||
|
|
* thereof, and that both notices appear in supporting documentation.
|
||
|
|
*
|
||
|
|
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
|
||
|
|
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
|
||
|
|
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
|
||
|
|
*
|
||
|
|
* Carnegie Mellon requests users of this software to return to
|
||
|
|
*
|
||
|
|
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
|
||
|
|
* School of Computer Science
|
||
|
|
* Carnegie Mellon University
|
||
|
|
* Pittsburgh PA 15213-3890
|
||
|
|
*
|
||
|
|
* any improvements or extensions that they make and grant Carnegie the
|
||
|
|
* rights to redistribute these changes.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
|
||
|
|
|
||
|
|
__KERNEL_RCSID(0, "$NetBSD: mcclock.c,v 1.1 2001/06/13 15:02:12 soda Exp $");
|
||
|
|
|
||
|
|
#include <sys/param.h>
|
||
|
|
#include <sys/systm.h>
|
||
|
|
#include <sys/device.h>
|
||
|
|
|
||
|
|
#include <machine/bus.h>
|
||
|
|
|
||
|
|
#include <dev/ic/mc146818reg.h>
|
||
|
|
|
||
|
|
#include <arc/arc/todclockvar.h>
|
||
|
|
#include <arc/dev/mcclockvar.h>
|
||
|
|
|
||
|
|
void mcclock_get __P((struct device *, time_t, struct todclocktime *));
|
||
|
|
void mcclock_set __P((struct device *, struct todclocktime *));
|
||
|
|
|
||
|
|
const struct todclockfns mcclock_todclockfns = {
|
||
|
|
mcclock_get, mcclock_set,
|
||
|
|
};
|
||
|
|
|
||
|
|
void
|
||
|
|
mcclock_attach(sc, busfns, year_offset)
|
||
|
|
struct mcclock_softc *sc;
|
||
|
|
const struct mcclock_busfns *busfns;
|
||
|
|
int year_offset;
|
||
|
|
{
|
||
|
|
|
||
|
|
printf(": mc146818 or compatible\n");
|
||
|
|
|
||
|
|
sc->sc_busfns = busfns;
|
||
|
|
|
||
|
|
todclockattach(&sc->sc_dev, &mcclock_todclockfns, year_offset);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Get the time of day, based on the clock's value and/or the base value.
|
||
|
|
*/
|
||
|
|
void
|
||
|
|
mcclock_get(dev, base, ct)
|
||
|
|
struct device *dev;
|
||
|
|
time_t base;
|
||
|
|
struct todclocktime *ct;
|
||
|
|
{
|
||
|
|
struct mcclock_softc *sc = (struct mcclock_softc *)dev;
|
||
|
|
mc_todregs regs;
|
||
|
|
int s;
|
||
|
|
|
||
|
|
s = splclock();
|
||
|
|
MC146818_GETTOD(sc, ®s)
|
||
|
|
splx(s);
|
||
|
|
|
||
|
|
ct->sec = regs[MC_SEC];
|
||
|
|
ct->min = regs[MC_MIN];
|
||
|
|
ct->hour = regs[MC_HOUR];
|
||
|
|
ct->dow = regs[MC_DOW];
|
||
|
|
ct->day = regs[MC_DOM];
|
||
|
|
ct->mon = regs[MC_MONTH];
|
||
|
|
ct->year = regs[MC_YEAR];
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Reset the TODR based on the time value.
|
||
|
|
*/
|
||
|
|
void
|
||
|
|
mcclock_set(dev, ct)
|
||
|
|
struct device *dev;
|
||
|
|
struct todclocktime *ct;
|
||
|
|
{
|
||
|
|
struct mcclock_softc *sc = (struct mcclock_softc *)dev;
|
||
|
|
mc_todregs regs;
|
||
|
|
int s;
|
||
|
|
|
||
|
|
s = splclock();
|
||
|
|
MC146818_GETTOD(sc, ®s);
|
||
|
|
splx(s);
|
||
|
|
|
||
|
|
regs[MC_SEC] = ct->sec;
|
||
|
|
regs[MC_MIN] = ct->min;
|
||
|
|
regs[MC_HOUR] = ct->hour;
|
||
|
|
regs[MC_DOW] = ct->dow;
|
||
|
|
regs[MC_DOM] = ct->day;
|
||
|
|
regs[MC_MONTH] = ct->mon;
|
||
|
|
regs[MC_YEAR] = ct->year;
|
||
|
|
|
||
|
|
s = splclock();
|
||
|
|
MC146818_PUTTOD(sc, ®s);
|
||
|
|
splx(s);
|
||
|
|
}
|