apic_timer.c File Reference

#include <hal/cpu/core.h>
#include "hal/cpu/cpuid.h"
#include "hal/cpu/interrupt.h"
#include "hal/cpu/msr.h"
#include "hal/timer/timer.h"
#include "init/init.h"
#include "libk/io.h"
#include "libk/serial.h"
#include <hal/acpi/hpet.h>
#include <hal/apic/apic.h>

Go to the source code of this file.

Macros
#define	APIC_TIMER_MASKED   (1 << 16)
#define	APIC_TIMER_MIN_VECTOR   0x20

Functions
void	vxInitializeAPICTimer ()
static uint64_t	vxAPICReadTSC ()
bool	vxTSChasInvariant (void)
static void	vxAPICTimerCalibrationUsingHPET ()
void	vxAPICCreateTimer (uint32_t type, uint64_t interval_us, uint16_t vector)
void	vxAPICCreateDeadlineTimer (const uint8_t vector, const uint64_t freq_us)

Variables
static uint64_t	calibrated_ticks_1ns = 0
static uint64_t	calibrated_tsmc_freq_1ms = 0
uint8_t	x2_apic_supported

Macro Definition Documentation

APIC_TIMER_MASKED

#define APIC_TIMER_MASKED   (1 << 16)

Definition at line 158 of file apic_timer.c.

Referenced by vxAPICCreateTimer().

APIC_TIMER_MIN_VECTOR

#define APIC_TIMER_MIN_VECTOR   0x20

Definition at line 160 of file apic_timer.c.

Function Documentation

vxAPICCreateDeadlineTimer()

void vxAPICCreateDeadlineTimer	(	const uint8_t	vector,
		const uint64_t	freq_us )

Definition at line 202 of file apic_timer.c.

References APIC_TIMER_DEADLINE, apic_write(), calibrated_tsmc_freq_1ms, LVT_TIMER, vector, vxAPICReadTSC(), and vxWRSR().

vxAPICCreateTimer()

void vxAPICCreateTimer	(	uint32_t	type,
		uint64_t	interval_us,
		uint16_t	vector )

Definition at line 162 of file apic_timer.c.

References apic_read(), APIC_TIMER_MASKED, APIC_TIMER_ONE_SHOT, APIC_TIMER_PERIOD, apic_write(), calibrated_ticks_1ns, count, LOG_ERROR, LOG_WARN, LVT_TIMER, TIMER_DIVIDE_CONFIG, TIMER_INITIAL_COUNT, type, and vector.

Referenced by __attribute__(), usleep(), and vxStartScheduler().

vxAPICReadTSC()

static uint64_t vxAPICReadTSC ( )

static

Definition at line 19 of file apic_timer.c.

Referenced by vxAPICCreateDeadlineTimer().

vxAPICTimerCalibrationUsingHPET()

static void vxAPICTimerCalibrationUsingHPET ( )

static

Definition at line 41 of file apic_timer.c.

References apic_read(), APIC_TIMER_ONE_SHOT, apic_write(), calibrated_ticks_1ns, get_current_core_data(), get_timer_counter_count(), get_timer_counter_count_ns(), hpet_disable(), hpet_enable(), init_timer_counter(), LOG2_DEBUG, LVT_TIMER, TIMER_CURRENT_COUNT, TIMER_DIVIDE_CONFIG, and TIMER_INITIAL_COUNT.

Referenced by vxInitializeAPICTimer().

vxInitializeAPICTimer()

void vxInitializeAPICTimer

(

)

Definition at line 148 of file apic_timer.c.

References calibrated_ticks_1ns, get_current_core_cpuid(), and vxAPICTimerCalibrationUsingHPET().

Referenced by __attribute__(), and INIT().

vxTSChasInvariant()

bool vxTSChasInvariant

(

void

)

Definition at line 35 of file apic_timer.c.

References cpuid().

Variable Documentation

calibrated_ticks_1ns

uint64_t calibrated_ticks_1ns = 0

static

Definition at line 14 of file apic_timer.c.

Referenced by vxAPICCreateTimer(), vxAPICTimerCalibrationUsingHPET(), and vxInitializeAPICTimer().

calibrated_tsmc_freq_1ms

uint64_t calibrated_tsmc_freq_1ms = 0

static

Definition at line 15 of file apic_timer.c.

Referenced by vxAPICCreateDeadlineTimer().

x2_apic_supported

uint8_t x2_apic_supported

extern

Definition at line 16 of file apic.c.