#include "drivers/pic/pic.h"

.code32
.global init_pic
init_pic:
    # init command
    mov $0x11, %al
    outb %al, $PIC1_COMMAND
    outb %al, $PIC2_COMMAND

    # vector offsets
    mov $0x20, %al
    outb %al, $PIC1_DATA
    mov $0x28, %al
    outb %al, $PIC2_DATA

    # cascade 
    mov $0x04, %al
    outb %al, $PIC1_DATA
    mov $0x02, %al
    outb %al, $PIC2_DATA 

    # env
    mov $0x01, %al
    outb %al, $PIC1_DATA
    outb %al, $PIC2_DATA 

    # mask all 
    mov $0xFC, %al
    outb %al, $PIC1_DATA
    mov $0xFF, %al
    outb %al, $PIC2_DATA 

    ret

.global io_wait
io_wait: 
    ret

.global send_eoi_master
send_eoi_master:
    mov $0x20, %al
    outb %al, $PIC1_COMMAND
    ret 

.global send_eoi_slave 
send_eoi_slave:
    mov $0x20, %al
    outb %al, $PIC2_COMMAND
    call send_eoi_master
    ret