NetBSD/sys/arch/amiga/dev/clock.c

973 lines
21 KiB
C

/*
* Copyright (c) 1988 University of Utah.
* 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. 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
* $Id: clock.c,v 1.2 1994/05/09 06:38:37 chopps Exp $
*/
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <machine/psl.h>
#include <machine/cpu.h>
#include <amiga/amiga/device.h>
#include <amiga/amiga/custom.h>
#include <amiga/amiga/cia.h>
#include <amiga/dev/rtc.h>
#include <amiga/dev/ztwobusvar.h>
#if defined(PROF) && defined(PROFTIMER)
#include <sys/PROF.h>
#endif
/* the clocks run at NTSC: 715.909kHz or PAL: 709.379kHz.
We're using a 100 Hz clock. */
#define CLK_INTERVAL amiga_clk_interval
int amiga_clk_interval = (715909 / 100); /* XXX NTSC */
/*
* Machine-dependent clock routines.
*
* Startrtclock restarts the real-time clock, which provides
* hardclock interrupts to kern_clock.c.
*
* Inittodr initializes the time of day hardware which provides
* date functions.
*
* Resettodr restores the time of day hardware after a time change.
*
* A note on the real-time clock:
* We actually load the clock with CLK_INTERVAL-1 instead of CLK_INTERVAL.
* This is because the counter decrements to zero after N+1 enabled clock
* periods where N is the value loaded into the counter.
*/
int clockmatch __P((struct device *, struct cfdata *, void *));
void clockattach __P((struct device *, struct device *, void *));
struct cfdriver clockcd = {
NULL, "clock", clockmatch, clockattach,
DV_DULL, sizeof(struct device), NULL, 0 };
int
clockmatch(pdp, cfp, auxp)
struct device *pdp;
struct cfdata *cfp;
void *auxp;
{
if (matchname("clock", auxp))
return(1);
return(0);
}
/*
* Start the real-time clock.
*/
void
clockattach(pdp, dp, auxp)
struct device *pdp, *dp;
void *auxp;
{
unsigned short interval;
/* be more elaborate XXX, whats the speed */
printf("\n");
/*
* stop timer A
*/
ciab.cra = ciab.cra & 0xc0;
/*
* load interval into registers.
* the clocks run at NTSC: 715.909kHz or PAL: 709.379kHz
* supprort for PAL WHEN?!?! XXX
*/
interval = CLK_INTERVAL - 1;
/*
* order of setting is important !
*/
ciab.talo = interval & 0xff;
ciab.tahi = interval >> 8;
}
void
cpu_initclocks()
{
/*
* enable interrupts for timer A
*/
ciab.icr = (1<<7) | (1<<0);
/*
* start timer A in continuous shot mode
*/
ciab.cra = (ciab.cra & 0xc0) | 1;
/*
* and globally enable interrupts for ciab
*/
custom.intena = INTF_SETCLR | INTF_EXTER;
}
setstatclockrate(hz)
int hz;
{
}
/*
* Returns number of usec since last recorded clock "tick"
* (i.e. clock interrupt).
*/
clkread()
{
u_char hi, hi2, lo;
u_int interval;
hi = ciab.tahi;
lo = ciab.talo;
hi2 = ciab.tahi;
if (hi != hi2) {
lo = ciab.talo;
hi = hi2;
}
interval = (CLK_INTERVAL - 1) - ((hi<<8) | lo);
/*
* should read ICR and if there's an int pending, adjust interval.
* However, * since reading ICR clears the interrupt, we'd lose a
* hardclock int, and * this is not tolerable.
*/
return((interval * tick) / CLK_INTERVAL);
}
u_int micspertick;
/*
* we set up as much of the CIAa as possible
* as all access to chip memory are very slow.
*/
void
setmicspertick()
{
micspertick = (1000000ULL << 20) / 715909;
/*
* disable interrupts (just in case.)
*/
ciaa.icr = 0x3;
/*
* stop both timers if not already
*/
ciaa.cra &= ~1;
ciaa.crb &= ~1;
/*
* set timer B in "count timer A underflows" mode
* set tiemr A in one-shot mode
*/
ciaa.crb = (ciaa.crb & 0x80) | 0x48;
ciaa.cra = (ciaa.cra & 0xc0) | 0x08;
}
/*
* this function assumes that on any entry beyond the first
* the following condintions exist:
* Interrupts for Timers A and B are disabled.
* Timers A and B are stoped.
* Timers A and B are in one-shot mode with B counting timer A underflows
*
*/
void
delay(mic)
int mic;
{
u_int temp;
int s;
if (micspertick == 0)
setmicspertick();
if (mic <= 1)
return;
/*
* basically this is going to do an integer
* usec / (1000000 / 715909) with no loss of
* precision
*/
temp = mic >> 12;
asm("divul %3,%1:%0" : "=d" (temp) : "d" (mic >> 12), "0" (mic << 20),
"d" (micspertick));
if ((temp & 0xffff0000) > 0x10000) {
mic = (temp >> 16) - 1;
temp &= 0xffff;
/*
* set timer A in continous mode
*/
ciaa.cra = (ciaa.cra & 0xc0) | 0x00;
/*
* latch/load/start "counts of timer A underflows" in B
*/
ciaa.tblo = mic & 0xff;
ciaa.tbhi = mic >> 8;
/*
* timer A latches 0xffff
* and start it.
*/
ciaa.talo = 0xff;
ciaa.tahi = 0xff;
ciaa.cra |= 1;
while (ciaa.crb & 1)
;
/*
* stop timer A
*/
ciaa.cra &= ~1;
/*
* set timer A in one shot mode
*/
ciaa.cra = (ciaa.cra & 0xc0) | 0x08;
} else if ((temp & 0xffff0000) == 0x10000) {
temp &= 0xffff;
/*
* timer A is in one shot latch/load/start 1 full turn
*/
ciaa.talo = 0xff;
ciaa.tahi = 0xff;
while (ciaa.cra & 1)
;
}
if (temp < 1)
return;
/*
* temp is now residual ammount, latch/load/start it.
*/
ciaa.talo = temp & 0xff;
ciaa.tahi = temp >> 8;
while (ciaa.cra & 1)
;
}
/*
* Needs to be calibrated for use, its way off most of the time
*/
void
DELAY(mic)
int mic;
{
u_long n;
short hpos;
/*
* this function uses HSync pulses as base units. The custom chips
* display only deals with 31.6kHz/2 refresh, this gives us a
* resolution of 1/15800 s, which is ~63us (add some fuzz so we really
* wait awhile, even if using small timeouts)
*/
n = mic/63 + 2;
do {
hpos = custom.vhposr & 0xff00;
while (hpos == (custom.vhposr & 0xff00))
;
} while (n--);
}
#if notyet
/* implement this later. I'd suggest using both timers in CIA-A, they're
not yet used. */
#include "clock.h"
#if NCLOCK > 0
/*
* /dev/clock: mappable high resolution timer.
*
* This code implements a 32-bit recycling counter (with a 4 usec period)
* using timers 2 & 3 on the 6840 clock chip. The counter can be mapped
* RO into a user's address space to achieve low overhead (no system calls),
* high-precision timing.
*
* Note that timer 3 is also used for the high precision profiling timer
* (PROFTIMER code above). Care should be taken when both uses are
* configured as only a token effort is made to avoid conflicting use.
*/
#include <sys/proc.h>
#include <sys/resourcevar.h>
#include <sys/ioctl.h>
#include <sys/malloc.h>
#include <vm/vm.h>
#include <amiga/amiga/clockioctl.h>
#include <sys/specdev.h>
#include <sys/vnode.h>
#include <sys/mman.h>
int clockon = 0; /* non-zero if high-res timer enabled */
#ifdef PROFTIMER
int profprocs = 0; /* # of procs using profiling timer */
#endif
#ifdef DEBUG
int clockdebug = 0;
#endif
/*ARGSUSED*/
clockopen(dev, flags)
dev_t dev;
{
#ifdef PROFTIMER
#ifdef PROF
/*
* Kernel profiling enabled, give up.
*/
if (profiling)
return(EBUSY);
#endif
/*
* If any user processes are profiling, give up.
*/
if (profprocs)
return(EBUSY);
#endif
if (!clockon) {
startclock();
clockon++;
}
return(0);
}
/*ARGSUSED*/
clockclose(dev, flags)
dev_t dev;
{
(void) clockunmmap(dev, (caddr_t)0, curproc); /* XXX */
stopclock();
clockon = 0;
return(0);
}
/*ARGSUSED*/
clockioctl(dev, cmd, data, flag, p)
dev_t dev;
caddr_t data;
struct proc *p;
{
int error = 0;
switch (cmd) {
case CLOCKMAP:
error = clockmmap(dev, (caddr_t *)data, p);
break;
case CLOCKUNMAP:
error = clockunmmap(dev, *(caddr_t *)data, p);
break;
case CLOCKGETRES:
*(int *)data = CLK_RESOLUTION;
break;
default:
error = EINVAL;
break;
}
return(error);
}
/*ARGSUSED*/
clockmap(dev, off, prot)
dev_t dev;
{
return((off + (INTIOBASE+CLKBASE+CLKSR-1)) >> PGSHIFT);
}
clockmmap(dev, addrp, p)
dev_t dev;
caddr_t *addrp;
struct proc *p;
{
int error;
struct vnode vn;
struct specinfo si;
int flags;
flags = MAP_FILE|MAP_SHARED;
if (*addrp)
flags |= MAP_FIXED;
else
*addrp = (caddr_t)0x1000000; /* XXX */
vn.v_type = VCHR; /* XXX */
vn.v_specinfo = &si; /* XXX */
vn.v_rdev = dev; /* XXX */
error = vm_mmap(&p->p_vmspace->vm_map, (vm_offset_t *)addrp,
PAGE_SIZE, VM_PROT_ALL, flags, (caddr_t)&vn, 0);
return(error);
}
clockunmmap(dev, addr, p)
dev_t dev;
caddr_t addr;
struct proc *p;
{
int rv;
if (addr == 0)
return(EINVAL); /* XXX: how do we deal with this? */
rv = vm_deallocate(p->p_vmspace->vm_map, (vm_offset_t)addr, PAGE_SIZE);
return(rv == KERN_SUCCESS ? 0 : EINVAL);
}
startclock()
{
register struct clkreg *clk = (struct clkreg *)clkstd[0];
clk->clk_msb2 = -1; clk->clk_lsb2 = -1;
clk->clk_msb3 = -1; clk->clk_lsb3 = -1;
clk->clk_cr2 = CLK_CR3;
clk->clk_cr3 = CLK_OENAB|CLK_8BIT;
clk->clk_cr2 = CLK_CR1;
clk->clk_cr1 = CLK_IENAB;
}
stopclock()
{
register struct clkreg *clk = (struct clkreg *)clkstd[0];
clk->clk_cr2 = CLK_CR3;
clk->clk_cr3 = 0;
clk->clk_cr2 = CLK_CR1;
clk->clk_cr1 = CLK_IENAB;
}
#endif
#endif
#ifdef PROFTIMER
/*
* This code allows the amiga kernel to use one of the extra timers on
* the clock chip for profiling, instead of the regular system timer.
* The advantage of this is that the profiling timer can be turned up to
* a higher interrupt rate, giving finer resolution timing. The profclock
* routine is called from the lev6intr in locore, and is a specialized
* routine that calls addupc. The overhead then is far less than if
* hardclock/softclock was called. Further, the context switch code in
* locore has been changed to turn the profile clock on/off when switching
* into/out of a process that is profiling (startprofclock/stopprofclock).
* This reduces the impact of the profiling clock on other users, and might
* possibly increase the accuracy of the profiling.
*/
int profint = PRF_INTERVAL; /* Clock ticks between interrupts */
int profscale = 0; /* Scale factor from sys clock to prof clock */
char profon = 0; /* Is profiling clock on? */
/* profon values - do not change, locore.s assumes these values */
#define PRF_NONE 0x00
#define PRF_USER 0x01
#define PRF_KERNEL 0x80
initprofclock()
{
#if NCLOCK > 0
struct proc *p = curproc; /* XXX */
/*
* If the high-res timer is running, force profiling off.
* Unfortunately, this gets reflected back to the user not as
* an error but as a lack of results.
*/
if (clockon) {
p->p_stats->p_prof.pr_scale = 0;
return;
}
/*
* Keep track of the number of user processes that are profiling
* by checking the scale value.
*
* XXX: this all assumes that the profiling code is well behaved;
* i.e. profil() is called once per process with pcscale non-zero
* to turn it on, and once with pcscale zero to turn it off.
* Also assumes you don't do any forks or execs. Oh well, there
* is always adb...
*/
if (p->p_stats->p_prof.pr_scale)
profprocs++;
else
profprocs--;
#endif
/*
* The profile interrupt interval must be an even divisor
* of the CLK_INTERVAL so that scaling from a system clock
* tick to a profile clock tick is possible using integer math.
*/
if (profint > CLK_INTERVAL || (CLK_INTERVAL % profint) != 0)
profint = CLK_INTERVAL;
profscale = CLK_INTERVAL / profint;
}
startprofclock()
{
unsigned short interval;
/* stop timer B */
ciab.crb = ciab.crb & 0xc0;
/* load interval into registers.
the clocks run at NTSC: 715.909kHz or PAL: 709.379kHz */
interval = profint - 1;
/* order of setting is important ! */
ciab.tblo = interval & 0xff;
ciab.tbhi = interval >> 8;
/* enable interrupts for timer B */
ciab.icr = (1<<7) | (1<<1);
/* start timer B in continuous shot mode */
ciab.crb = (ciab.crb & 0xc0) | 1;
}
stopprofclock()
{
/* stop timer B */
ciab.crb = ciab.crb & 0xc0;
}
#ifdef PROF
/*
* profclock() is expanded in line in lev6intr() unless profiling kernel.
* Assumes it is called with clock interrupts blocked.
*/
profclock(pc, ps)
caddr_t 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
#endif
/* this is a hook set by a clock driver for the configured realtime clock,
returning plain current unix-time */
long (*gettod) __P((void));
int (*settod) __P((long));
void *clockaddr;
long a3gettod __P((void));
long a2gettod __P((void));
int a3settod __P((long));
int a2settod __P((long));
int rtcinit __P((void));
/*
* Initialize the time of day register, based on the time base which is, e.g.
* from a filesystem.
*/
inittodr(base)
time_t base;
{
u_long timbuf = base; /* assume no battery clock exists */
if (gettod == NULL && rtcinit() == 0)
printf("WARNING: no battery clock\n");
else
timbuf = gettod();
if (timbuf < base) {
printf("WARNING: bad date in battery clock\n");
timbuf = base;
}
/* Battery clock does not store usec's, so forget about it. */
time.tv_sec = timbuf;
}
resettodr()
{
if (settod && settod(time.tv_sec) == 1)
return;
printf("Cannot set battery backed clock\n");
}
int
rtcinit()
{
clockaddr = (void *)ztwomap(0xdc0000);
if (is_a3000() || is_a4000()) {
if (a3gettod() == 0)
return(0);
gettod = a3gettod;
settod = a3settod;
} else {
if (a2gettod() == 0)
return(0);
gettod = a2gettod;
settod = a2settod;
}
return(1);
}
static int month_days[12] = {
31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
};
long
a3gettod()
{
struct rtclock3000 *rt;
int i, year, month, day, hour, min, sec;
u_long tmp;
rt = clockaddr;
/* hold clock */
rt->control1 = A3CONTROL1_HOLD_CLOCK;
/* read it */
sec = rt->second1 * 10 + rt->second2;
min = rt->minute1 * 10 + rt->minute2;
hour = rt->hour1 * 10 + rt->hour2;
day = rt->day1 * 10 + rt->day2;
month = rt->month1 * 10 + rt->month2;
year = rt->year1 * 10 + rt->year2 + 1900;
/* let it run again.. */
rt->control1 = A3CONTROL1_FREE_CLOCK;
if (range_test(hour, 0, 23))
return(0);
if (range_test(day, 1, 31))
return(0);
if (range_test(month, 1, 12))
return(0);
if (range_test(year, STARTOFTIME, 2000))
return(0);
tmp = 0;
for (i = STARTOFTIME; i < year; i++)
tmp += days_in_year(i);
if (leapyear(year) && month > FEBRUARY)
tmp++;
for (i = 1; i < month; i++)
tmp += days_in_month(i);
tmp += (day - 1);
tmp = ((tmp * 24 + hour) * 60 + min) * 60 + sec;
return(tmp);
}
int
a3settod(tim)
long tim;
{
register int i;
register long hms, day;
u_char sec1, sec2;
u_char min1, min2;
u_char hour1, hour2;
u_char day1, day2;
u_char mon1, mon2;
u_char year1, year2;
struct rtclock3000 *rt;
rt = clockaddr;
/*
* there seem to be problems with the bitfield addressing
* currently used..
*/
return(0);
#if not_yet
if (rt)
return 0;
/* prepare values to be written to clock */
day = tim / SECDAY;
hms = tim % SECDAY;
hour2 = hms / 3600;
hour1 = hour2 / 10;
hour2 %= 10;
min2 = (hms % 3600) / 60;
min1 = min2 / 10;
min2 %= 10;
sec2 = (hms % 3600) % 60;
sec1 = sec2 / 10;
sec2 %= 10;
/* Number of years in days */
for (i = STARTOFTIME - 1900; day >= days_in_year(i); i++)
day -= days_in_year(i);
year1 = i / 10;
year2 = i % 10;
/* Number of months in days left */
if (leapyear(i))
days_in_month(FEBRUARY) = 29;
for (i = 1; day >= days_in_month(i); i++)
day -= days_in_month(i);
days_in_month(FEBRUARY) = 28;
mon1 = i / 10;
mon2 = i % 10;
/* Days are what is left over (+1) from all that. */
day ++;
day1 = day / 10;
day2 = day % 10;
rt->control1 = CONTROL1_HOLD_CLOCK;
rt->second1 = sec1;
rt->second2 = sec2;
rt->minute1 = min1;
rt->minute2 = min2;
rt->hour1 = hour1;
rt->hour2 = hour2;
rt->day1 = day1;
rt->day2 = day2;
rt->month1 = mon1;
rt->month2 = mon2;
rt->year1 = year1;
rt->year2 = year2;
rt->control2 = CONTROL1_FREE_CLOCK;
return 1;
#endif
}
long
a2gettod()
{
struct rtclock2000 *rt;
int i, year, month, day, hour, min, sec;
u_long tmp;
rt = clockaddr;
/*
* hold clock
*/
rt->control1 |= A2CONTROL1_HOLD;
while (rt->control1 & A2CONTROL1_BUSY)
;
/*
* read it
*/
sec = rt->second1 * 10 + rt->second2;
min = rt->minute1 * 10 + rt->minute2;
hour = (rt->hour1 & 3) * 10 + rt->hour2;
day = rt->day1 * 10 + rt->day2;
month = rt->month1 * 10 + rt->month2;
year = rt->year1 * 10 + rt->year2 + 1900;
if ((rt->control3 & A2CONTROL3_24HMODE) == 0) {
if ((rt->hour1 & A2HOUR1_PM) == 0 && hour == 12)
hour = 0;
else if ((rt->hour1 & A2HOUR1_PM) && hour != 12)
hour += 12;
}
/*
* release the clock
*/
rt->control1 &= ~A2CONTROL1_HOLD;
if (range_test(hour, 0, 23))
return(0);
if (range_test(day, 1, 31))
return(0);
if (range_test(month, 1, 12))
return(0);
if (range_test(year, STARTOFTIME, 2000))
return(0);
tmp = 0;
for (i = STARTOFTIME; i < year; i++)
tmp += days_in_year(i);
if (leapyear(year) && month > FEBRUARY)
tmp++;
for (i = 1; i < month; i++)
tmp += days_in_month(i);
tmp += (day - 1);
tmp = ((tmp * 24 + hour) * 60 + min) * 60 + sec;
return(tmp);
}
/*
* there is some question as to whether this works
* I guess
*/
int
a2settod(tim)
long tim;
{
int i;
long hms, day;
u_char sec1, sec2;
u_char min1, min2;
u_char hour1, hour2;
u_char day1, day2;
u_char mon1, mon2;
u_char year1, year2;
struct rtclock2000 *rt;
rt = clockaddr;
/*
* there seem to be problems with the bitfield addressing
* currently used..
*
* XXX Check out the above where we (hour1 & 3)
*/
return(0);
#if not_yet
if (! rt)
return 0;
/* prepare values to be written to clock */
day = tim / SECDAY;
hms = tim % SECDAY;
hour2 = hms / 3600;
hour1 = hour2 / 10;
hour2 %= 10;
min2 = (hms % 3600) / 60;
min1 = min2 / 10;
min2 %= 10;
sec2 = (hms % 3600) % 60;
sec1 = sec2 / 10;
sec2 %= 10;
/* Number of years in days */
for (i = STARTOFTIME - 1900; day >= days_in_year(i); i++)
day -= days_in_year(i);
year1 = i / 10;
year2 = i % 10;
/* Number of months in days left */
if (leapyear(i))
days_in_month(FEBRUARY) = 29;
for (i = 1; day >= days_in_month(i); i++)
day -= days_in_month(i);
days_in_month(FEBRUARY) = 28;
mon1 = i / 10;
mon2 = i % 10;
/* Days are what is left over (+1) from all that. */
day ++;
day1 = day / 10;
day2 = day % 10;
/*
* XXXX spin wait as with reading???
*/
rt->control1 = A2CONTROL1_HOLD_CLOCK;
rt->second1 = sec1;
rt->second2 = sec2;
rt->minute1 = min1;
rt->minute2 = min2;
rt->hour1 = hour1;
rt->hour2 = hour2;
rt->day1 = day1;
rt->day2 = day2;
rt->month1 = mon1;
rt->month2 = mon2;
rt->year1 = year1;
rt->year2 = year2;
rt->control2 = CONTROL1_FREE_CLOCK;
return 1;
#endif
}