1/* 2 * arch/i386/mach-generic/io_ports.h 3 * 4 * Machine specific IO port address definition for generic. 5 * Written by Osamu Tomita <tomita@cinet.co.jp> 6 */ 7#ifndef _MACH_IO_PORTS_H 8#define _MACH_IO_PORTS_H 9 10/* i8253A PIT registers */ 11#define PIT_MODE 0x43 12#define PIT_CH0 0x40 13#define PIT_CH2 0x42 14 15/* i8259A PIC registers */ 16#define PIC_MASTER_CMD 0x20 17#define PIC_MASTER_IMR 0x21 18#define PIC_MASTER_ISR PIC_MASTER_CMD 19#define PIC_MASTER_POLL PIC_MASTER_ISR 20#define PIC_MASTER_OCW3 PIC_MASTER_ISR 21#define PIC_SLAVE_CMD 0xa0 22#define PIC_SLAVE_IMR 0xa1 23 24/* i8259A PIC related value */ 25#define PIC_CASCADE_IR 2 26#define MASTER_ICW4_DEFAULT 0x01 27#define SLAVE_ICW4_DEFAULT 0x01 28#define PIC_ICW4_AEOI 2 29 30#endif /* !_MACH_IO_PORTS_H */ 31