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// Definitions for X86 IO port access.
//
// Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net>
//
// This file may be distributed under the terms of the GNU GPLv3 license.
#ifndef __IOPORT_H
#define __IOPORT_H
#include "types.h" // u8
#define PORT_DMA_ADDR_2 0x0004
#define PORT_DMA_CNT_2 0x0005
#define PORT_DMA1_MASK_REG 0x000a
#define PORT_DMA1_MODE_REG 0x000b
#define PORT_DMA1_CLEAR_FF_REG 0x000c
#define PORT_DMA1_MASTER_CLEAR 0x000d
#define PORT_PIC1 0x0020
#define PORT_PIC1_DATA 0x0021
#define PORT_PIT_COUNTER0 0x0040
#define PORT_PIT_COUNTER1 0x0041
#define PORT_PIT_COUNTER2 0x0042
#define PORT_PIT_MODE 0x0043
#define PORT_KBD_DATA 0x0060
#define PORT_KBD_CTRLB 0x0061
#define PORT_KBD_STATUS 0x0064
#define PORT_CMOS_INDEX 0x0070
#define PORT_CMOS_DATA 0x0071
#define PORT_DIAG 0x0080
#define PORT_DMA_PAGE_2 0x0081
#define PORT_A20 0x0092
#define PORT_PIC2 0x00a0
#define PORT_PIC2_DATA 0x00a1
#define PORT_DMA2_MASK_REG 0x00d4
#define PORT_DMA2_MODE_REG 0x00d6
#define PORT_DMA2_MASTER_CLEAR 0x00da
#define PORT_MATH_CLEAR 0x00f0
#define PORT_FD_DOR 0x03f2
#define PORT_FD_STATUS 0x03f4
#define PORT_FD_DATA 0x03f5
// PORT_PIC1 bitdefs
#define PIC1_IRQ5 (1<<5)
// PORT_PIC2 bitdefs
#define PIC2_IRQ8 (1<<0)
#define PIC2_IRQ13 (1<<5)
// PORT_KBD_CTRLB bitdefs
#define KBD_REFRESH (1<<4)
static inline void outb(u8 value, u16 port) {
__asm__ __volatile__("outb %b0, %w1" : : "a"(value), "Nd"(port));
}
static inline u8 inb(u16 port) {
u8 value;
__asm__ __volatile__("inb %w1, %b0" : "=a"(value) : "Nd"(port));
return value;
}
#endif // ioport.h
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