static long
rtctime(void)
{
struct RTCdev *dev;
Rtc rtc;
dev = nvr.rtc;
dev->control |= RTCREAD;
wbflush();
rtc.sec = bcd2dec(dev->sec) & 0x7F;
rtc.min = bcd2dec(dev->min & 0x7F);
rtc.hour = bcd2dec(dev->hour & 0x3F);
rtc.mday = bcd2dec(dev->mday & 0x3F);
rtc.mon = bcd2dec(dev->mon & 0x3F);
rtc.year = bcd2dec(dev->year);
dev->control &= ~RTCREAD;
wbflush();
if (rtc.mon < 1 || rtc.mon > 12)
return 0;
/*
* the world starts Jan 1 1970
*/
if(rtc.year < 70)
rtc.year += 2000;
else
rtc.year += 1900;
return rtc2sec(&rtc);
}
static long
_rtctime(void)
{
Rtc rtc;
int i;
/* don't do the read until the clock is no longer busy */
for(i = 0; i < 10000; i++){
outb(Paddr, Status);
if(inb(Pdata) & 0x80)
continue;
/* read clock values */
outb(Paddr, Seconds); rtc.sec = inb(Pdata);
outb(Paddr, Minutes); rtc.min = inb(Pdata);
outb(Paddr, Hours); rtc.hour = inb(Pdata);
outb(Paddr, Mday); rtc.mday = inb(Pdata);
outb(Paddr, Month); rtc.mon = inb(Pdata);
outb(Paddr, Year); rtc.year = inb(Pdata);
outb(Paddr, Status);
if((inb(Pdata) & 0x80) == 0)
break;
}
/*
* the world starts jan 1 1970
*/
if(rtc.year < 70)
rtc.year += 2000;
else
rtc.year += 1900;
return rtc2sec(&rtc);
}
static long
_rtctime(void)
{
uchar bcdclock[Nbcd];
Rtc rtc;
int i;
/* don't do the read until the clock is no longer busy */
for(i = 0; i < 10000; i++){
outb(Paddr, Status);
if(inb(Pdata) & 0x80)
continue;
/* read clock values */
outb(Paddr, Seconds); bcdclock[0] = inb(Pdata);
outb(Paddr, Minutes); bcdclock[1] = inb(Pdata);
outb(Paddr, Hours); bcdclock[2] = inb(Pdata);
outb(Paddr, Mday); bcdclock[3] = inb(Pdata);
outb(Paddr, Month); bcdclock[4] = inb(Pdata);
outb(Paddr, Year); bcdclock[5] = inb(Pdata);
outb(Paddr, Status);
if((inb(Pdata) & 0x80) == 0)
break;
}
/*
* convert from BCD
*/
rtc.sec = GETBCD(0);
rtc.min = GETBCD(1);
rtc.hour = GETBCD(2);
rtc.mday = GETBCD(3);
rtc.mon = GETBCD(4);
rtc.year = GETBCD(5);
/*
* the world starts jan 1 1970
*/
if(rtc.year < 70)
rtc.year += 2000;
else
rtc.year += 1900;
return rtc2sec(&rtc);
}
