apic.h

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#ifndef __APIC_H__
#define __APIC_H__
 
#include <stdint.h>
#include <aurora.h>
 
#define IA32_APIC_BASE_MSR  0x1B
#define IA32_APIC_BASE_MSR_BSP  0x100
#define IA32_APIC_BASE_MSR_X2APIC 0x400
#define IA32_APIC_BASE_MSR_ENABLE 0x800
 
#define IA32_X2APIC_REGISTER_BASE_MSR 0x800
#define IA32_APIC_SVR_ENABLE 0x100
 
#define IA32_APIC_LVT_MAST  0x10000
 
#define LAPIC_SPURIOUS   0x00f0
#define LAPIC_LVT_TIMER  0x0320
#define LAPIC_LVT_LINT0  0x0350
#define LAPIC_LVT_LINT1  0x0360
 
#define LAPIC_TIMER_INIT  0x0380
#define LAPIC_TIMER_CUR   0x0390
#define LAPIC_TIMER_DIV   0x03e0
 
#define LAPIC_REGISTER_ID  0x2
#define LAPIC_REGISTER_EOI 0xB
#define LAPIC_REGISTER_SVR 0xF
#define LAPIC_REGISTER_ICR  0x30
#define LAPIC_REGISTER_LVT_TIMER  0x32
#define LAPIC_REGISTER_LVT_ERROR  0x37
 
#define LAPIC_REGISTER_TMRINITCNT  0x38
#define LAPIC_REGISTER_TMRCURRCNT  0x39
#define LAPIC_REGISTER_TMRDIV      0x3E
 
/*
 * ReadAPICRegister -- reads a register of apic
 * @param reg -- register to read
 */
extern uint64_t ReadAPICRegister(uint16_t reg);
 
/*
 * WriteAPICRegister -- writes a value to a register
 * of APIC
 * @param reg -- register to select
 * @param value -- value to write
 */
extern void WriteAPICRegister(uint16_t reg, uint64_t value);
/*
* AuAPICInitialise -- initialise the APIC
* @param bsp -- is this is initialised from bsp
* processor ?
*/
extern void AuAPICInitialise(bool bsp);
 
/*
* APICLocalEOI -- sends end_of_interrupt message
* to APIC
*/
extern void APICLocalEOI();
 
AU_EXTERN AU_EXPORT void APICTimerSleep(uint32_t ms);
 
/*
 * X2APICSupported -- is x2apic supported ?
 */
extern bool X2APICSupported();
 
/*
 *AuAPICGetInterruptPeriod -- returns the current interrupt
 * period timing in microsecond (us)
 */
extern uint64_t AuAPICGetInterruptPeriod();
 
#endif