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Fixed HalQueryRealTimeClock and HalSetRealTimeClock.

Browse source 
Thanks to Adam Polanski.

svn path=/trunk/; revision=841
This commit is contained in:
Eric Kohl 1999-12-09 08:16:26 +00:00
parent f09720f7d7
commit ec235d7468
1 changed files with 75 additions and 81 deletions
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144
reactos/ntoskrnl/hal/x86/time.c
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@ -7,16 +7,6 @@
/* INCLUDES *****************************************************************/
#include <ddk/ntddk.h>
#include <internal/stddef.h>
#include <internal/ntoskrnl.h>
#include <internal/ke.h>
#include <internal/bitops.h>
#include <internal/linkage.h>
#include <string.h>
#include <internal/string.h>
#include <internal/i386/segment.h>
#include <internal/halio.h>
#define NDEBUG
@ -34,50 +24,74 @@
#define RTC_REGISTER_A 0x0A
#define RTC_REG_A_UIP 0x80 /* Update In Progress bit */
#define RTC_REGISTER_CENTURY 0x32
/* FUNCTIONS *****************************************************************/
static BYTE
HalQueryCMOS (BYTE Reg)
{
BYTE Val;
Reg |= 0x80;
__asm__("cli\n"); // AP unsure as to whether to do this here
outb (0x70, Reg);
Val=inb (0x71);
outb (0x70, 0);
__asm__("sti\n"); // AP unsure about this too..
return(Val);
}
static VOID
HalSetCMOS (BYTE Reg, BYTE Val)
{
Reg |= 0x80;
__asm__("cli\n"); // AP unsure as to whether to do this here
outb (0x70, Reg);
outb (0x71, Val);
outb (0x70, 0);
__asm__("sti\n"); // AP unsure about this too..
}
VOID
HalQueryRealTimeClock (PTIME_FIELDS pTime)
{
//FIXME : wait RTC ok?
UCHAR uip; // Update In Progress
#if 0
do
{
outb(0x70,0);
pTime->Second=BCD_INT(inb(0x71));
} while(pTime->Second>60);
#endif
/* check 'Update In Progress' bit */
while (HalQueryCMOS (RTC_REGISTER_A) & RTC_REG_A_UIP)
;
do
{
outb(0x70, RTC_REGISTER_A);
uip = inb(0x71) & RTC_REG_A_UIP;
} while(uip);
pTime->Second = BCD_INT(HalQueryCMOS (0));
pTime->Minute = BCD_INT(HalQueryCMOS (2));
pTime->Hour = BCD_INT(HalQueryCMOS (4));
pTime->Weekday = BCD_INT(HalQueryCMOS (6));
pTime->Day = BCD_INT(HalQueryCMOS (7));
pTime->Month = BCD_INT(HalQueryCMOS (8));
pTime->Year = BCD_INT(HalQueryCMOS (9));
outb(0x70,0);
pTime->Second=BCD_INT(inb(0x71));
outb(0x70,2);
pTime->Minute=BCD_INT(inb(0x71));
outb(0x70,4);
pTime->Hour=BCD_INT(inb(0x71));
outb(0x70,6);
pTime->Weekday=BCD_INT(inb(0x71));
outb(0x70,7);
pTime->Day=BCD_INT(inb(0x71));
outb(0x70,8);
pTime->Month=BCD_INT(inb(0x71));
outb_p(0x70,9);
pTime->Year=BCD_INT(inb_p(0x71));
if(pTime->Year>80) pTime->Year +=1900;
else pTime->Year +=2000;
if (pTime->Year > 80)
pTime->Year += 1900;
else
pTime->Year += 2000;
#if 0
/* Century */
outb_p(0x70,0x32);
pTime->Year += BCD_INT(inb_p(0x71)) * 100;
pTime->Year += BCD_INT(HalQueryCMOS (RTC_REGISTER_CENTURY)) * 100;
#endif
#ifndef NDEBUG
DbgPrint ("HalQueryRealTimeClock() %d:%d:%d %d/%d/%d\n",
pTime->Hour,
pTime->Minute,
pTime->Second,
pTime->Day,
pTime->Month,
pTime->Year
);
#endif
pTime->Milliseconds = 0;
@ -87,40 +101,20 @@ HalQueryRealTimeClock(PTIME_FIELDS pTime)
VOID
HalSetRealTimeClock (PTIME_FIELDS pTime)
{
UCHAR uip; // Update In Progress
/* check 'Update In Progress' bit */
while (HalQueryCMOS (RTC_REGISTER_A) & RTC_REG_A_UIP)
;
do
{
outb(0x70,0xA);
uip = inb(0x71) & RTC_REG_A_UIP;
} while(uip);
HalSetCMOS (0, INT_BCD(pTime->Second));
HalSetCMOS (2, INT_BCD(pTime->Minute));
HalSetCMOS (4, INT_BCD(pTime->Hour));
HalSetCMOS (6, INT_BCD(pTime->Weekday));
HalSetCMOS (7, INT_BCD(pTime->Day));
HalSetCMOS (8, INT_BCD(pTime->Month));
HalSetCMOS (9, INT_BCD(pTime->Year % 100));
outb(0x70,0);
outb(0x71, INT_BCD(pTime->Second));
outb(0x70,2);
outb(0x71, INT_BCD(pTime->Minute));
outb(0x70,4);
outb(0x71, INT_BCD(pTime->Hour));
outb(0x70,6);
outb(0x71, INT_BCD(pTime->Weekday));
outb(0x70,7);
outb(0x71, INT_BCD(pTime->Day));
outb(0x70,8);
outb(0x71, INT_BCD(pTime->Month));
outb_p(0x70,9);
outb(0x71, INT_BCD(pTime->Year % 100));
/* Century */
#if 0
outb_p(0x70,0x32);
outb(0x71, INT_BCD(pTime->Year / 100));
/* Century */
HalSetCMOS (RTC_REGISTER_CENTURY, INT_BCD(pTime->Year / 100));
#endif
}