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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
#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_CMD 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_PS2_DATA 0x0060
#define PORT_PS2_CTRLB 0x0061
#define PORT_PS2_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_CMD 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
#define PORT_HD_DATA 0x03f6
#define PORT_FD_DIR 0x03f7
#define PORT_PCI_CMD 0x0cf8
#define PORT_PCI_DATA 0x0cfc
#define PORT_BIOS_DEBUG 0x0402
#define PORT_QEMU_CFG_CTL 0x0510
#define PORT_QEMU_CFG_DATA 0x0511
#define PORT_BIOS_APM 0x8900
// PORT_A20 bitdefs
#define A20_ENABLE_BIT 0x02
#ifndef __ASSEMBLY__
#include "types.h" // u8
static inline void outb(u8 value, u16 port) {
__asm__ __volatile__("outb %b0, %w1" : : "a"(value), "Nd"(port));
}
static inline void outw(u16 value, u16 port) {
__asm__ __volatile__("outw %w0, %w1" : : "a"(value), "Nd"(port));
}
static inline void outl(u32 value, u16 port) {
__asm__ __volatile__("outl %0, %w1" : : "a"(value), "Nd"(port));
}
static inline u8 inb(u16 port) {
u8 value;
__asm__ __volatile__("inb %w1, %b0" : "=a"(value) : "Nd"(port));
return value;
}
static inline u16 inw(u16 port) {
u16 value;
__asm__ __volatile__("inw %w1, %w0" : "=a"(value) : "Nd"(port));
return value;
}
static inline u32 inl(u16 port) {
u32 value;
__asm__ __volatile__("inl %w1, %0" : "=a"(value) : "Nd"(port));
return value;
}
static inline void insb(u16 port, u8 *data, u32 count) {
asm volatile("rep insb (%%dx), %%es:(%%di)"
: "+c"(count), "+D"(data) : "d"(port) : "memory");
}
static inline void insw(u16 port, u16 *data, u32 count) {
asm volatile("rep insw (%%dx), %%es:(%%di)"
: "+c"(count), "+D"(data) : "d"(port) : "memory");
}
static inline void insl(u16 port, u32 *data, u32 count) {
asm volatile("rep insl (%%dx), %%es:(%%di)"
: "+c"(count), "+D"(data) : "d"(port) : "memory");
}
// XXX - outs not limited to es segment
static inline void outsb(u16 port, u8 *data, u32 count) {
asm volatile("rep outsb %%es:(%%si), (%%dx)"
: "+c"(count), "+S"(data) : "d"(port) : "memory");
}
static inline void outsw(u16 port, u16 *data, u32 count) {
asm volatile("rep outsw %%es:(%%si), (%%dx)"
: "+c"(count), "+S"(data) : "d"(port) : "memory");
}
static inline void outsl(u16 port, u32 *data, u32 count) {
asm volatile("rep outsl %%es:(%%si), (%%dx)"
: "+c"(count), "+S"(data) : "d"(port) : "memory");
}
#endif // !__ASSEMBLY__
#endif // ioport.h