hpet.h File Reference

High Precision Event Timer (HPET) support. More...

#include <types.h>
#include <acpi.h>
#include <utils.h>

Classes
struct	hpet_address_t
	HPET address structure. More...
struct	hpet_table_t
	ACPI HPET table structure. More...
union	hpet_capabilities_t
	HPET capabilities register. More...
struct	hpet_congfiguration_t
	HPET configuration register. More...
struct	hpet_interrupt_status_t
	HPET interrupt status register. More...
union	hpet_timer_configuration_t
	HPET timer configuration register. More...
struct	hpet_t
	HPET structure. More...

Macros
#define	___HPET_H   0
#define	HPET_INTERRUPT_STATUS_OF(x, i)

Typedefs
typedef struct hpet_address_t	hpet_address_t
	HPET address structure.
typedef struct hpet_table_t	hpet_table_t
	ACPI HPET table structure.
typedef union hpet_capabilities_t	hpet_capabilities_t
	HPET capabilities register.
typedef struct hpet_congfiguration_t	hpet_configuration_t
	HPET configuration register.
typedef struct hpet_interrupt_status_t	hpet_interrupt_status_t
	HPET interrupt status register.
typedef union hpet_timer_configuration_t	hpet_timer_configuration_t
	HPET timer configuration register.
typedef struct hpet_t	hpet_t
	HPET structure.

Functions
int8_t	hpet_init (void)
	initializes hpet

Variables
boolean_t	hpet_enabled
	stores if hpet is enabled

Detailed Description

High Precision Event Timer (HPET) support.

This work is licensed under TURNSTONE OS Public License. Please read and understand latest version of Licence.

Macro Definition Documentation

___HPET_H

#define ___HPET_H   0

macro for avoiding multiple inclusion

HPET_INTERRUPT_STATUS_OF

#define HPET_INTERRUPT_STATUS_OF	(		x,
			i )

Value:

((x->interrupt_status.status >> i ) & 1)

macro for getting interrupt status of timer i of hpet x

Function Documentation

hpet_init()

int8_t hpet_init

(

void

)

initializes hpet

Returns

0 if hpet was initialized, -1 otherwise

Variable Documentation

hpet_enabled

boolean_t hpet_enabled

extern

stores if hpet is enabled

variable for hpet enabled flag