#ifndef _PIC_H
#define _PIC_H

#include <stdint.h>
#include <stddef.h>

#define PIC1            0x20		/* IO base address for master PIC */
#define PIC2            0xA0		/* IO base address for slave PIC */
#define PIC1_COMMAND    PIC1
#define PIC1_DATA       (PIC1+1)
#define PIC2_COMMAND    PIC2
#define PIC2_DATA       (PIC2+1)
#define PIC_EOI         0x20		/* End-of-interrupt command code */
#define ICW1_ICW4       0x01		/* ICW4 (not) needed */
#define ICW1_SINGLE     0x02		/* Single (cascade) mode */
#define ICW1_INTERVAL4  0x04		/* Call address interval 4 (8) */
#define ICW1_LEVEL      0x08		/* Level triggered (edge) mode */
#define ICW1_INIT       0x10		/* Initialization - required! */
 
#define ICW4_8086       0x01		/* 8086/88 (MCS-80/85) mode */
#define ICW4_AUTO       0x02		/* Auto (normal) EOI */
#define ICW4_BUF_SLAVE  0x08		/* Buffered mode/slave */
#define ICW4_BUF_MASTER 0x0C		/* Buffered mode/master */
#define ICW4_SFNM       0x10		/* Special fully nested (not) */

void pic_send_eoi(uint8_t irq);
void pic_remap(uint8_t offset1, uint8_t offset2);
void pic_irq_set_mask(uint8_t IRQline);
void pic_irq_clear_mask(uint8_t IRQline);

#endif