diff options
Diffstat (limited to 'src/ioport.h')
| -rw-r--r-- | src/ioport.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/src/ioport.h b/src/ioport.h new file mode 100644 index 00000000..344803e4 --- /dev/null +++ b/src/ioport.h @@ -0,0 +1,56 @@ +// 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_CTRLB 0x0061 +#define PORT_CMOS_INDEX 0x0070 +#define PORT_CMOS_DATA 0x0071 +#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_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 |