hpet.cc File Reference

#include "machine/hpet.h"
#include "machine/acpi.h"
#include "machine/core.h"
#include "debug/assert.h"
#include "debug/kernelpanic.h"
#include "debug/output.h"

Include dependency graph for hpet.cc:

Classes
struct	HPET::ConfigurationRegister.__unnamed38__

Namespaces
namespace	HPET
	Abstraction of the HPET existing in "modern" computers (since ~2005)

Typedefs
typedef uint64_t	HPET::InterruptStatusRegister
	Global state register for interrupts.

Enumerations
enum	HPET::RegisterOffset : uint16_t {   HPET::CAPABILITIES_AND_ID = 0x000 ,   HPET::CONFIGURATION = 0x010 ,   HPET::INTERRUPT_STATUS = 0x020 ,   HPET::MAIN_COUNTER = 0x0f0 }
	Register Offsets. More...

Functions
static uint64_t	HPET::read (RegisterOffset offset)
static void	HPET::write (RegisterOffset offset, uint64_t value)
static uint64_t	HPET::getTicks (uint64_t usecs)
bool	HPET::init ()
	Initializes the HPET system from ACPI Table.
void	HPET::delay (uint64_t usecs)
	Delays the caller's execution by approx.
bool	HPET::isEnabled ()
	Checks whether the HPET system is enabled.
void	HPET::reset ()
	Reset the global counter to zero.
uint64_t	HPET::get ()
void	HPET::enable ()
	Activate the HPET system.
void	HPET::disable ()
	Deactivate the HPET system.
size_t	HPET::countComparators ()
	Retrieve the number of HPET comparators.
Comparator *	HPET::getComparator (size_t n)
	Returns a pointer to the nth timer comparator.

Constants
uintptr_t	HPET::base_address = 0
static uint16_t	HPET::min_periodic_clock_tick

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Class Documentation

HPET::ConfigurationRegister.__unnamed38__

struct HPET::ConfigurationRegister.__unnamed38__

Class Members
uint64_t	enabled: 1	Enables/disables the HPET.
uint64_t	legacy_routing: 1	if 1, legacy routing is enabled
uint64_t	__pad0__: 62