82357f6d42
The only ones left in sys are beyond by sed script! (or in sys/dist or sys/external) Mostly they have function pointer parameters.
607 lines
16 KiB
C
607 lines
16 KiB
C
/* $NetBSD: clock.c,v 1.45 2009/03/14 21:04:06 dsl Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1982, 1990 The Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* the Systems Programming Group of the University of Utah Computer
|
|
* Science Department.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* from: Utah $Hdr: clock.c 1.18 91/01/21$
|
|
*
|
|
* @(#)clock.c 7.6 (Berkeley) 5/7/91
|
|
*/
|
|
/*
|
|
* Copyright (c) 1988 University of Utah.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* the Systems Programming Group of the University of Utah Computer
|
|
* Science Department.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* from: Utah $Hdr: clock.c 1.18 91/01/21$
|
|
*
|
|
* @(#)clock.c 7.6 (Berkeley) 5/7/91
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: clock.c,v 1.45 2009/03/14 21:04:06 dsl Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/device.h>
|
|
#include <sys/uio.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/event.h>
|
|
#include <sys/timetc.h>
|
|
|
|
#include <dev/clock_subr.h>
|
|
|
|
#include <machine/psl.h>
|
|
#include <machine/cpu.h>
|
|
#include <machine/iomap.h>
|
|
#include <machine/mfp.h>
|
|
#include <atari/dev/clockreg.h>
|
|
#include <atari/atari/device.h>
|
|
|
|
#if defined(GPROF) && defined(PROFTIMER)
|
|
#include <machine/profile.h>
|
|
#endif
|
|
|
|
static int atari_rtc_get(todr_chip_handle_t, struct clock_ymdhms *);
|
|
static int atari_rtc_set(todr_chip_handle_t, struct clock_ymdhms *);
|
|
|
|
/*
|
|
* The MFP clock runs at 2457600Hz. We use a {system,stat,prof}clock divider
|
|
* of 200. Therefore the timer runs at an effective rate of:
|
|
* 2457600/200 = 12288Hz.
|
|
*/
|
|
#define CLOCK_HZ 12288
|
|
|
|
static u_int clk_getcounter(struct timecounter *);
|
|
|
|
static struct timecounter clk_timecounter = {
|
|
clk_getcounter, /* get_timecount */
|
|
0, /* no poll_pps */
|
|
~0u, /* counter_mask */
|
|
CLOCK_HZ, /* frequency */
|
|
"clock", /* name, overriden later */
|
|
100, /* quality */
|
|
NULL, /* prev */
|
|
NULL, /* next */
|
|
};
|
|
|
|
/*
|
|
* Machine-dependent clock routines.
|
|
*
|
|
* Inittodr initializes the time of day hardware which provides
|
|
* date functions.
|
|
*
|
|
* Resettodr restores the time of day hardware after a time change.
|
|
*/
|
|
|
|
struct clock_softc {
|
|
struct device sc_dev;
|
|
int sc_flags;
|
|
};
|
|
|
|
/*
|
|
* 'sc_flags' state info. Only used by the rtc-device functions.
|
|
*/
|
|
#define RTC_OPEN 1
|
|
|
|
dev_type_open(rtcopen);
|
|
dev_type_close(rtcclose);
|
|
dev_type_read(rtcread);
|
|
dev_type_write(rtcwrite);
|
|
|
|
static void clockattach(struct device *, struct device *, void *);
|
|
static int clockmatch(struct device *, struct cfdata *, void *);
|
|
|
|
CFATTACH_DECL(clock, sizeof(struct clock_softc),
|
|
clockmatch, clockattach, NULL, NULL);
|
|
|
|
extern struct cfdriver clock_cd;
|
|
|
|
const struct cdevsw rtc_cdevsw = {
|
|
rtcopen, rtcclose, rtcread, rtcwrite, noioctl,
|
|
nostop, notty, nopoll, nommap, nokqfilter,
|
|
};
|
|
|
|
void statintr(struct clockframe);
|
|
|
|
static int twodigits(char *, int);
|
|
|
|
static int divisor; /* Systemclock divisor */
|
|
|
|
/*
|
|
* Statistics and profile clock intervals and variances. Variance must
|
|
* be a power of 2. Since this gives us an even number, not an odd number,
|
|
* we discard one case and compensate. That is, a variance of 64 would
|
|
* give us offsets in [0..63]. Instead, we take offsets in [1..63].
|
|
* This is symmetric around the point 32, or statvar/2, and thus averages
|
|
* to that value (assuming uniform random numbers).
|
|
*/
|
|
#ifdef STATCLOCK
|
|
static int statvar = 32; /* {stat,prof}clock variance */
|
|
static int statmin; /* statclock divisor - variance/2 */
|
|
static int profmin; /* profclock divisor - variance/2 */
|
|
static int clk2min; /* current, from above choices */
|
|
#endif
|
|
|
|
int
|
|
clockmatch(struct device *pdp, struct cfdata *cfp, void *auxp)
|
|
{
|
|
if (!atari_realconfig) {
|
|
/*
|
|
* Initialize Timer-B in the ST-MFP. This timer is used by
|
|
* the 'delay' function below. This timer is setup to be
|
|
* continueously counting from 255 back to zero at a
|
|
* frequency of 614400Hz. We do this *early* in the
|
|
* initialisation process.
|
|
*/
|
|
MFP->mf_tbcr = 0; /* Stop timer */
|
|
MFP->mf_iera &= ~IA_TIMB; /* Disable timer interrupts */
|
|
MFP->mf_tbdr = 0;
|
|
MFP->mf_tbcr = T_Q004; /* Start timer */
|
|
|
|
return 0;
|
|
}
|
|
if(!strcmp("clock", auxp))
|
|
return(1);
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* Start the real-time clock.
|
|
*/
|
|
void clockattach(pdp, dp, auxp)
|
|
struct device *pdp, *dp;
|
|
void *auxp;
|
|
{
|
|
struct clock_softc *sc = (void *)dp;
|
|
static struct todr_chip_handle tch;
|
|
|
|
tch.todr_gettime_ymdhms = atari_rtc_get;
|
|
tch.todr_settime_ymdhms = atari_rtc_set;
|
|
tch.todr_setwen = NULL;
|
|
|
|
todr_attach(&tch);
|
|
|
|
sc->sc_flags = 0;
|
|
|
|
/*
|
|
* Initialize Timer-A in the ST-MFP. We use a divisor of 200.
|
|
* The MFP clock runs at 2457600Hz. Therefore the timer runs
|
|
* at an effective rate of: 2457600/200 = 12288Hz. The
|
|
* following expression works for 48, 64 or 96 hz.
|
|
*/
|
|
divisor = CLOCK_HZ/hz;
|
|
MFP->mf_tacr = 0; /* Stop timer */
|
|
MFP->mf_iera &= ~IA_TIMA; /* Disable timer interrupts */
|
|
MFP->mf_tadr = divisor; /* Set divisor */
|
|
|
|
clk_timecounter.tc_frequency = CLOCK_HZ;
|
|
|
|
if (hz != 48 && hz != 64 && hz != 96) { /* XXX */
|
|
printf (": illegal value %d for systemclock, reset to %d\n\t",
|
|
hz, 64);
|
|
hz = 64;
|
|
}
|
|
printf(": system hz %d timer-A divisor 200/%d\n", hz, divisor);
|
|
tc_init(&clk_timecounter);
|
|
|
|
#ifdef STATCLOCK
|
|
if ((stathz == 0) || (stathz > hz) || (CLOCK_HZ % stathz))
|
|
stathz = hz;
|
|
if ((profhz == 0) || (profhz > (hz << 1)) || (CLOCK_HZ % profhz))
|
|
profhz = hz << 1;
|
|
|
|
MFP->mf_tcdcr &= 0x7; /* Stop timer */
|
|
MFP->mf_ierb &= ~IB_TIMC; /* Disable timer inter. */
|
|
MFP->mf_tcdr = CLOCK_HZ/stathz; /* Set divisor */
|
|
|
|
statmin = (CLOCK_HZ/stathz) - (statvar >> 1);
|
|
profmin = (CLOCK_HZ/profhz) - (statvar >> 1);
|
|
clk2min = statmin;
|
|
#endif /* STATCLOCK */
|
|
|
|
}
|
|
|
|
void cpu_initclocks()
|
|
{
|
|
MFP->mf_tacr = T_Q200; /* Start timer */
|
|
MFP->mf_ipra = (u_int8_t)~IA_TIMA;/* Clear pending interrupts */
|
|
MFP->mf_iera |= IA_TIMA; /* Enable timer interrupts */
|
|
MFP->mf_imra |= IA_TIMA; /* ..... */
|
|
|
|
#ifdef STATCLOCK
|
|
MFP->mf_tcdcr = (MFP->mf_tcdcr & 0x7) | (T_Q200<<4); /* Start */
|
|
MFP->mf_iprb = (u_int8_t)~IB_TIMC;/* Clear pending interrupts */
|
|
MFP->mf_ierb |= IB_TIMC; /* Enable timer interrupts */
|
|
MFP->mf_imrb |= IB_TIMC; /* ..... */
|
|
#endif /* STATCLOCK */
|
|
}
|
|
|
|
void
|
|
setstatclockrate(int newhz)
|
|
{
|
|
#ifdef STATCLOCK
|
|
if (newhz == stathz)
|
|
clk2min = statmin;
|
|
else clk2min = profmin;
|
|
#endif /* STATCLOCK */
|
|
}
|
|
|
|
#ifdef STATCLOCK
|
|
void
|
|
statintr(struct clockframe frame)
|
|
{
|
|
register int var, r;
|
|
|
|
var = statvar - 1;
|
|
do {
|
|
r = random() & var;
|
|
} while(r == 0);
|
|
|
|
/*
|
|
* Note that we are always lagging behind as the new divisor
|
|
* value will not be loaded until the next interrupt. This
|
|
* shouldn't disturb the median frequency (I think ;-) ) as
|
|
* only the value used when switching frequencies is used
|
|
* twice. This shouldn't happen very often.
|
|
*/
|
|
MFP->mf_tcdr = clk2min + r;
|
|
|
|
statclock(&frame);
|
|
}
|
|
#endif /* STATCLOCK */
|
|
|
|
static u_int
|
|
clk_getcounter(struct timecounter *tc)
|
|
{
|
|
u_int delta;
|
|
u_char ipra, tadr;
|
|
int s, cur_hardclock;
|
|
|
|
s = splhigh();
|
|
ipra = MFP->mf_ipra;
|
|
tadr = MFP->mf_tadr;
|
|
delta = divisor - tadr;
|
|
|
|
if (ipra & IA_TIMA)
|
|
delta += divisor;
|
|
cur_hardclock = hardclock_ticks;
|
|
splx(s);
|
|
|
|
return (divisor - tadr) + divisor * cur_hardclock;
|
|
}
|
|
|
|
#define TIMB_FREQ 614400
|
|
#define TIMB_LIMIT 256
|
|
|
|
/*
|
|
* Wait "n" microseconds.
|
|
* Relies on MFP-Timer B counting down from TIMB_LIMIT at TIMB_FREQ Hz.
|
|
* Note: timer had better have been programmed before this is first used!
|
|
*/
|
|
void
|
|
delay(unsigned int n)
|
|
{
|
|
int ticks, otick, remaining;
|
|
|
|
/*
|
|
* Read the counter first, so that the rest of the setup overhead is
|
|
* counted.
|
|
*/
|
|
otick = MFP->mf_tbdr;
|
|
|
|
if (n <= UINT_MAX / TIMB_FREQ) {
|
|
/*
|
|
* For unsigned arithmetic, division can be replaced with
|
|
* multiplication with the inverse and a shift.
|
|
*/
|
|
remaining = n * TIMB_FREQ / 1000000;
|
|
} else {
|
|
/* This is a very long delay.
|
|
* Being slow here doesn't matter.
|
|
*/
|
|
remaining = (unsigned long long) n * TIMB_FREQ / 1000000;
|
|
}
|
|
|
|
while(remaining > 0) {
|
|
ticks = MFP->mf_tbdr;
|
|
if(ticks > otick)
|
|
remaining -= TIMB_LIMIT - (ticks - otick);
|
|
else
|
|
remaining -= otick - ticks;
|
|
otick = ticks;
|
|
}
|
|
}
|
|
|
|
#ifdef GPROF
|
|
/*
|
|
* profclock() is expanded in line in lev6intr() unless profiling kernel.
|
|
* Assumes it is called with clock interrupts blocked.
|
|
*/
|
|
profclock(void *pc, int ps)
|
|
{
|
|
/*
|
|
* Came from user mode.
|
|
* If this process is being profiled record the tick.
|
|
*/
|
|
if (USERMODE(ps)) {
|
|
if (p->p_stats.p_prof.pr_scale)
|
|
addupc(pc, &curproc->p_stats.p_prof, 1);
|
|
}
|
|
/*
|
|
* Came from kernel (supervisor) mode.
|
|
* If we are profiling the kernel, record the tick.
|
|
*/
|
|
else if (profiling < 2) {
|
|
register int s = pc - s_lowpc;
|
|
|
|
if (s < s_textsize)
|
|
kcount[s / (HISTFRACTION * sizeof (*kcount))]++;
|
|
}
|
|
/*
|
|
* Kernel profiling was on but has been disabled.
|
|
* Mark as no longer profiling kernel and if all profiling done,
|
|
* disable the clock.
|
|
*/
|
|
if (profiling && (profon & PRF_KERNEL)) {
|
|
profon &= ~PRF_KERNEL;
|
|
if (profon == PRF_NONE)
|
|
stopprofclock();
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/***********************************************************************
|
|
* Real Time Clock support *
|
|
***********************************************************************/
|
|
|
|
u_int mc146818_read(rtc, regno)
|
|
void *rtc;
|
|
u_int regno;
|
|
{
|
|
((struct rtc *)rtc)->rtc_regno = regno;
|
|
return(((struct rtc *)rtc)->rtc_data & 0377);
|
|
}
|
|
|
|
void mc146818_write(rtc, regno, value)
|
|
void *rtc;
|
|
u_int regno, value;
|
|
{
|
|
((struct rtc *)rtc)->rtc_regno = regno;
|
|
((struct rtc *)rtc)->rtc_data = value;
|
|
}
|
|
|
|
static int
|
|
atari_rtc_get(todr_chip_handle_t todr, struct clock_ymdhms *dtp)
|
|
{
|
|
int sps;
|
|
mc_todregs clkregs;
|
|
u_int regb;
|
|
|
|
sps = splhigh();
|
|
regb = mc146818_read(RTC, MC_REGB);
|
|
MC146818_GETTOD(RTC, &clkregs);
|
|
splx(sps);
|
|
|
|
regb &= MC_REGB_24HR|MC_REGB_BINARY;
|
|
if (regb != (MC_REGB_24HR|MC_REGB_BINARY)) {
|
|
printf("Error: Nonstandard RealTimeClock Configuration -"
|
|
" value ignored\n"
|
|
" A write to /dev/rtc will correct this.\n");
|
|
return(0);
|
|
}
|
|
if(clkregs[MC_SEC] > 59)
|
|
return -1;
|
|
if(clkregs[MC_MIN] > 59)
|
|
return -1;
|
|
if(clkregs[MC_HOUR] > 23)
|
|
return -1;
|
|
if(range_test(clkregs[MC_DOM], 1, 31))
|
|
return -1;
|
|
if (range_test(clkregs[MC_MONTH], 1, 12))
|
|
return -1;
|
|
if(clkregs[MC_YEAR] > 99)
|
|
return -1;
|
|
|
|
dtp->dt_year = clkregs[MC_YEAR] + GEMSTARTOFTIME;
|
|
dtp->dt_mon = clkregs[MC_MONTH];
|
|
dtp->dt_day = clkregs[MC_DOM];
|
|
dtp->dt_hour = clkregs[MC_HOUR];
|
|
dtp->dt_min = clkregs[MC_MIN];
|
|
dtp->dt_sec = clkregs[MC_SEC];
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
atari_rtc_set(todr_chip_handle_t todr, struct clock_ymdhms *dtp)
|
|
{
|
|
int s;
|
|
mc_todregs clkregs;
|
|
|
|
clkregs[MC_YEAR] = dtp->dt_year - GEMSTARTOFTIME;
|
|
clkregs[MC_MONTH] = dtp->dt_mon;
|
|
clkregs[MC_DOM] = dtp->dt_day;
|
|
clkregs[MC_HOUR] = dtp->dt_hour;
|
|
clkregs[MC_MIN] = dtp->dt_min;
|
|
clkregs[MC_SEC] = dtp->dt_sec;
|
|
|
|
s = splclock();
|
|
MC146818_PUTTOD(RTC, &clkregs);
|
|
splx(s);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* RTC-device support *
|
|
***********************************************************************/
|
|
int
|
|
rtcopen(dev_t dev, int flag, int mode, struct lwp *l)
|
|
{
|
|
int unit = minor(dev);
|
|
struct clock_softc *sc;
|
|
|
|
sc = device_lookup_private(&clock_cd, unit);
|
|
if (sc == NULL)
|
|
return ENXIO;
|
|
if (sc->sc_flags & RTC_OPEN)
|
|
return EBUSY;
|
|
|
|
sc->sc_flags = RTC_OPEN;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
rtcclose(dev_t dev, int flag, int mode, struct lwp *l)
|
|
{
|
|
int unit = minor(dev);
|
|
struct clock_softc *sc = device_lookup_private(&clock_cd, unit);
|
|
|
|
sc->sc_flags = 0;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
rtcread(dev_t dev, struct uio *uio, int flags)
|
|
{
|
|
struct clock_softc *sc;
|
|
mc_todregs clkregs;
|
|
int s, length;
|
|
char buffer[16];
|
|
|
|
sc = device_lookup_private(&clock_cd, minor(dev));
|
|
|
|
s = splhigh();
|
|
MC146818_GETTOD(RTC, &clkregs);
|
|
splx(s);
|
|
|
|
sprintf(buffer, "%4d%02d%02d%02d%02d.%02d\n",
|
|
clkregs[MC_YEAR] + GEMSTARTOFTIME,
|
|
clkregs[MC_MONTH], clkregs[MC_DOM],
|
|
clkregs[MC_HOUR], clkregs[MC_MIN], clkregs[MC_SEC]);
|
|
|
|
if (uio->uio_offset > strlen(buffer))
|
|
return 0;
|
|
|
|
length = strlen(buffer) - uio->uio_offset;
|
|
if (length > uio->uio_resid)
|
|
length = uio->uio_resid;
|
|
|
|
return(uiomove((void *)buffer, length, uio));
|
|
}
|
|
|
|
static int
|
|
twodigits(char *buffer, int pos)
|
|
{
|
|
int result = 0;
|
|
|
|
if (buffer[pos] >= '0' && buffer[pos] <= '9')
|
|
result = (buffer[pos] - '0') * 10;
|
|
if (buffer[pos+1] >= '0' && buffer[pos+1] <= '9')
|
|
result += (buffer[pos+1] - '0');
|
|
return(result);
|
|
}
|
|
|
|
int
|
|
rtcwrite(dev_t dev, struct uio *uio, int flags)
|
|
{
|
|
mc_todregs clkregs;
|
|
int s, length, error;
|
|
char buffer[16];
|
|
|
|
/*
|
|
* We require atomic updates!
|
|
*/
|
|
length = uio->uio_resid;
|
|
if (uio->uio_offset || (length != sizeof(buffer)
|
|
&& length != sizeof(buffer - 1)))
|
|
return(EINVAL);
|
|
|
|
if ((error = uiomove((void *)buffer, sizeof(buffer), uio)))
|
|
return(error);
|
|
|
|
if (length == sizeof(buffer) && buffer[sizeof(buffer) - 1] != '\n')
|
|
return(EINVAL);
|
|
|
|
s = splclock();
|
|
mc146818_write(RTC, MC_REGB,
|
|
mc146818_read(RTC, MC_REGB) | MC_REGB_24HR | MC_REGB_BINARY);
|
|
MC146818_GETTOD(RTC, &clkregs);
|
|
splx(s);
|
|
|
|
clkregs[MC_SEC] = twodigits(buffer, 13);
|
|
clkregs[MC_MIN] = twodigits(buffer, 10);
|
|
clkregs[MC_HOUR] = twodigits(buffer, 8);
|
|
clkregs[MC_DOM] = twodigits(buffer, 6);
|
|
clkregs[MC_MONTH] = twodigits(buffer, 4);
|
|
s = twodigits(buffer, 0) * 100 + twodigits(buffer, 2);
|
|
clkregs[MC_YEAR] = s - GEMSTARTOFTIME;
|
|
|
|
s = splclock();
|
|
MC146818_PUTTOD(RTC, &clkregs);
|
|
splx(s);
|
|
|
|
return(0);
|
|
}
|