ioapic.h

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#ifndef __IOAPIC_H__
#define __IOAPIC_H__
 
#include <stdint.h>
 
#define IOAPIC_REG_ID  0x00
#define IOAPIC_REG_VER 0x01
#define IOAPIC_REG_ARB 0x02
#define IOAPIC_REG_RED_TBL_BASE 0x10
 
/*
* IOAPICInitialise -- initialise ioapic
* @param address -- ioapic base address
*/
extern void IOAPICInitialise(void* address);
 
/*
* IOAPICMaskIRQ -- masks an irq
* @param irq -- Interrupt Request number
* @param value -- if true, then mask, if false unmask
*/
extern void IOAPICMaskIRQ(uint8_t irq, bool value);
 
/*
* IOAPICRegisterIRQ -- Maps an IOAPIC interrupt to a interrupt vector
* @param vector -- vector number
* @param fn -- function handler
* @param irq -- IRQ number
* @param level -- is this a level interrupt ?
*/
extern void IOAPICRegisterIRQ(size_t vector, void(*fn)(size_t, void*), uint8_t irq, bool level);
 
extern void IOAPICRedirect(uint8_t irq, uint32_t gsi, uint16_t flags, uint8_t apic);
 
#endif