#ifndef HAL_APIC_H_
#define HAL_APIC_H_

#include <stdint.h>

#define IOAPIC_IOREGSEL   0x00
#define IOAPIC_IOWIN      0x10

#define IOAPIC_IOAPICID   0x00
#define IOAPIC_IOAPICVER  0x01
#define IOAPIC_IOAPICARB  0x02
#define IOAPIC_IOREDTBL   0x10

#define LAPIC_ID      0x0020
#define LAPIC_VER     0x0030
#define LAPIC_TPR     0x0080
#define LAPIC_APR     0x0090
#define LAPIC_PPR     0x00A0
#define LAPIC_EOI     0x00B0
#define LAPIC_RRD     0x00C0
#define LAPIC_LDR     0x00D0
#define LAPIC_DFR     0x00E0
#define LAPIC_SVR     0x00F0
#define LAPIC_ISR     0x0100
#define LAPIC_TMR     0x0180
#define LAPIC_IRR     0x0200
#define LAPIC_ESR     0x0280
#define LAPIC_ICRLO   0x0300
#define LAPIC_ICRHI   0x0310
#define LAPIC_TIMER   0x0320
#define LAPIC_THERMAL 0x0330
#define LAPIC_PERF    0x0340
#define LAPIC_LINT0   0x0350
#define LAPIC_LINT1   0x0360
#define LAPIC_ERROR   0x0370
#define LAPIC_TICR    0x0380
#define LAPIC_TCCR    0x0390
#define LAPIC_TDCR    0x03E0

#define ICR_FIXED         0x00000000
#define ICR_LOWEST        0x00000100
#define ICR_SMI           0x00000200
#define ICR_NMI           0x00000400
#define ICR_INIT          0x00000500
#define ICR_STARTUP       0x00000600
#define ICR_PHYS          0x00000000
#define ICR_LOGC          0x00000800
#define ICR_IDLE          0x00000000
#define ICR_SEND_PENDING  0x00001000
#define ICR_DEASSERT      0x00000000
#define ICR_ASSERT        0x00004000
#define ICR_EDGE          0x00000000
#define ICR_LEVEL         0x00008000
#define ICR_NO_SHORTHAND  0x00000000
#define ICR_SELF          0x00040000
#define ICR_ALL_INC_SELF  0x00080000
#define ICR_ALL_EXCL_SELF 0x000C0000

#define ICR_DEST_SHIFT 24

extern uint8_t *IOAPIC;

void apic_init(void);
void ioapic_setentry(uint8_t *base, uint8_t idx, uint64_t data);
uint32_t ioapic_read(uint8_t *base, uint8_t reg);
void ioapic_write(uint8_t *base, uint8_t reg, uint32_t data);
void lapic_write(uint32_t reg, uint32_t data);
uint32_t lapic_read(uint32_t reg);

#endif // HAL_APIC_H_