mirror of
https://github.com/reactos/reactos.git
synced 2024-12-27 01:24:38 +00:00
94c25baf85
And why the ARM HAL uses KPCR::InterruptRoutine, a field only defined in *powerpc*/ketypes.h, is beyond me, but OK... See Timo vs. Alex discussion, explaining that KIPCR is a ReactOS-only thing: https://reactos.org/archives/public/ros-dev/2008-August/010549.html
149 lines
3.2 KiB
C
149 lines
3.2 KiB
C
/*
|
|
* PROJECT: ReactOS HAL
|
|
* LICENSE: BSD - See COPYING.ARM in the top level directory
|
|
* FILE: hal/halarm/generic/timer.c
|
|
* PURPOSE: Timer Routines
|
|
* PROGRAMMERS: ReactOS Portable Systems Group
|
|
*/
|
|
|
|
/* INCLUDES *******************************************************************/
|
|
|
|
#include <hal.h>
|
|
#define NDEBUG
|
|
#include <debug.h>
|
|
|
|
VOID
|
|
FASTCALL
|
|
KeUpdateSystemTime(
|
|
IN PKTRAP_FRAME TrapFrame,
|
|
IN ULONG Increment,
|
|
IN KIRQL OldIrql
|
|
);
|
|
|
|
/* GLOBALS ********************************************************************/
|
|
|
|
ULONG HalpCurrentTimeIncrement, HalpNextTimeIncrement, HalpNextIntervalCount;
|
|
|
|
/* PRIVATE FUNCTIONS **********************************************************/
|
|
|
|
VOID
|
|
HalpClockInterrupt(VOID)
|
|
{
|
|
/* Clear the interrupt */
|
|
ASSERT(KeGetCurrentIrql() == CLOCK2_LEVEL);
|
|
WRITE_REGISTER_ULONG(TIMER0_INT_CLEAR, 1);
|
|
|
|
/* FIXME: Update HAL Perf counters */
|
|
|
|
/* FIXME: Check if someone changed the clockrate */
|
|
|
|
/* Call the kernel */
|
|
KeUpdateSystemTime(KeGetCurrentThread()->TrapFrame,
|
|
HalpCurrentTimeIncrement,
|
|
CLOCK2_LEVEL);
|
|
}
|
|
|
|
VOID
|
|
HalpStallInterrupt(VOID)
|
|
{
|
|
/* Clear the interrupt */
|
|
WRITE_REGISTER_ULONG(TIMER0_INT_CLEAR, 1);
|
|
}
|
|
|
|
VOID
|
|
HalpInitializeClock(VOID)
|
|
{
|
|
PKPCR Pcr = KeGetPcr();
|
|
ULONG ClockInterval;
|
|
SP804_CONTROL_REGISTER ControlRegister;
|
|
|
|
/* Setup the clock and profile interrupt */
|
|
Pcr->InterruptRoutine[CLOCK2_LEVEL] = HalpStallInterrupt;
|
|
|
|
/*
|
|
* Configure the interval to 10ms
|
|
* (INTERVAL (10ms) * TIMCLKfreq (1MHz))
|
|
* --------------------------------------- == 10^4
|
|
* (TIMCLKENXdiv (1) * PRESCALEdiv (1))
|
|
*/
|
|
ClockInterval = 0x2710;
|
|
|
|
/* Configure the timer */
|
|
ControlRegister.AsUlong = 0;
|
|
ControlRegister.Wide = TRUE;
|
|
ControlRegister.Periodic = TRUE;
|
|
ControlRegister.Interrupt = TRUE;
|
|
ControlRegister.Enabled = TRUE;
|
|
|
|
/* Enable the timer */
|
|
WRITE_REGISTER_ULONG(TIMER0_LOAD, ClockInterval);
|
|
WRITE_REGISTER_ULONG(TIMER0_CONTROL, ControlRegister.AsUlong);
|
|
}
|
|
|
|
/* PUBLIC FUNCTIONS ***********************************************************/
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
VOID
|
|
NTAPI
|
|
HalCalibratePerformanceCounter(IN volatile PLONG Count,
|
|
IN ULONGLONG NewCount)
|
|
{
|
|
UNIMPLEMENTED;
|
|
while (TRUE);
|
|
}
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
ULONG
|
|
NTAPI
|
|
HalSetTimeIncrement(IN ULONG Increment)
|
|
{
|
|
UNIMPLEMENTED;
|
|
while (TRUE);
|
|
return Increment;
|
|
}
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
VOID
|
|
NTAPI
|
|
KeStallExecutionProcessor(IN ULONG Microseconds)
|
|
{
|
|
SP804_CONTROL_REGISTER ControlRegister;
|
|
|
|
/* Enable the timer */
|
|
WRITE_REGISTER_ULONG(TIMER1_LOAD, Microseconds);
|
|
|
|
/* Configure the timer */
|
|
ControlRegister.AsUlong = 0;
|
|
ControlRegister.OneShot = TRUE;
|
|
ControlRegister.Wide = TRUE;
|
|
ControlRegister.Periodic = TRUE;
|
|
ControlRegister.Enabled = TRUE;
|
|
WRITE_REGISTER_ULONG(TIMER1_CONTROL, ControlRegister.AsUlong);
|
|
|
|
/* Now we will loop until the timer reached 0 */
|
|
while (READ_REGISTER_ULONG(TIMER1_VALUE));
|
|
}
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
LARGE_INTEGER
|
|
NTAPI
|
|
KeQueryPerformanceCounter(IN PLARGE_INTEGER PerformanceFreq)
|
|
{
|
|
LARGE_INTEGER Value;
|
|
|
|
UNIMPLEMENTED;
|
|
while (TRUE);
|
|
|
|
Value.QuadPart = 0;
|
|
return Value;
|
|
}
|
|
|
|
/* EOF */
|