IO APIC driver

Data Structures
struct	IOAPIC_Desc
struct	IOAPIC_InterruptMapEntry

Macros
#define	MAX_IOAPIC_COUNT   128
#define	IOAPIC_PIN_COUNT   24

Functions
uint8_t	IOAPIC_Initialize (uint32_t baseAddr, uint32_t global_int_base)
void	IOAPIC_MapIRQ (uint8_t global_irq, uint8_t apic_vector, uint64_t apic_id, uint8_t trigger_mode, uint8_t polarity, uint8_t delivery_mode)
void	IOAPIC_SetEnableMode (uint8_t vector, bool active)
uint8_t	IOAPIC_GetVector (uint8_t global_irq, uint8_t *vec)
void	IOAPIC_VirtualizeAll (void)
uint32_t	IOAPIC_Read (uint32_t *io_apic_baseAddr, uint32_t index)
	Read an IOAPIC configuration register. More...
void	IOAPIC_Write (uint32_t *io_apic_baseAddr, uint32_t index, uint32_t val)
	Write an IOAPIC configuration register. More...

Detailed Description

Macro Definition Documentation

#define IOAPIC_PIN_COUNT   24

#define MAX_IOAPIC_COUNT   128

Function Documentation

uint8_t IOAPIC_GetVector	(	uint8_t	global_irq,
		uint8_t *	vec
	)

uint8_t IOAPIC_Initialize	(	uint32_t	baseAddr,
		uint32_t	global_int_base
	)

void IOAPIC_MapIRQ	(	uint8_t	global_irq,
		uint8_t	apic_vector,
		uint64_t	apic_id,
		uint8_t	trigger_mode,
		uint8_t	polarity,
		uint8_t	delivery_mode
	)

uint32_t IOAPIC_Read	(	uint32_t *	io_apic_baseAddr,
		uint32_t	index
	)

Read an IOAPIC configuration register.

Parameters

io_apic_baseAddr	the base address of the IO APIC MMIO space
index	the register index to read

Returns

the value of the register

void IOAPIC_SetEnableMode	(	uint8_t	vector,
		bool	active
	)

void IOAPIC_VirtualizeAll

(

void

)

void IOAPIC_Write	(	uint32_t *	io_apic_baseAddr,
		uint32_t	index,
		uint32_t	val
	)

Write an IOAPIC configuration register.

Parameters

io_apic_baseAddr	the base address of the IO APIC MMIO space
index	the register index to read
val	the register value