Detailed Description

Advanced Programmable Interrupt Controller Timer.

Each local APIC is associated with a timer which can be used to generate interrupts at specific intervals, or as we use it, to generate a single interrupt after a specified time.

See also: ACPI Specification Version 6.6

Enumerations
enum	apic_timer_mode_t { APIC_TIMER_MASKED = 0x10000 , APIC_TIMER_PERIODIC = 0x20000 , APIC_TIMER_ONE_SHOT = 0x00000 }
	APIC Timer Modes. More...

enum	apic_timer_divider_t { APIC_TIMER_DIV_16 = 0x3 , APIC_TIMER_DIV_32 = 0x4 , APIC_TIMER_DIV_64 = 0x5 , APIC_TIMER_DIV_128 = 0x6 , APIC_TIMER_DIV_DEFAULT = APIC_TIMER_DIV_16 }
	APIC Timer Divider Values. More...

Functions
uint64_t	apic_timer_init (void)
	Initialize the APIC timer subsystem.

Enumeration Type Documentation

◆ apic_timer_mode_t

enum apic_timer_mode_t

APIC Timer Modes.

Enumerator
APIC_TIMER_MASKED	Timer is masked (disabled)
APIC_TIMER_PERIODIC
APIC_TIMER_ONE_SHOT

Definition at line 22 of file apic_timer.h.

◆ apic_timer_divider_t

enum apic_timer_divider_t

APIC Timer Divider Values.

Enumerator
APIC_TIMER_DIV_16
APIC_TIMER_DIV_32
APIC_TIMER_DIV_64
APIC_TIMER_DIV_128
APIC_TIMER_DIV_DEFAULT

Definition at line 33 of file apic_timer.h.

Function Documentation

◆ apic_timer_init()

uint64_t apic_timer_init ( void )

Initialize the APIC timer subsystem.

Returns: On success, 0. On failure, ERR.

Definition at line 86 of file apic_timer.c.

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