mirror of https://gitee.com/openkylin/linux.git
26 lines
649 B
C
26 lines
649 B
C
/*
|
|
* arch/i386/mach-generic/io_ports.h
|
|
*
|
|
* Machine specific IO port address definition for generic.
|
|
* Written by Osamu Tomita <tomita@cinet.co.jp>
|
|
*/
|
|
#ifndef _MACH_IO_PORTS_H
|
|
#define _MACH_IO_PORTS_H
|
|
|
|
/* i8259A PIC registers */
|
|
#define PIC_MASTER_CMD 0x20
|
|
#define PIC_MASTER_IMR 0x21
|
|
#define PIC_MASTER_ISR PIC_MASTER_CMD
|
|
#define PIC_MASTER_POLL PIC_MASTER_ISR
|
|
#define PIC_MASTER_OCW3 PIC_MASTER_ISR
|
|
#define PIC_SLAVE_CMD 0xa0
|
|
#define PIC_SLAVE_IMR 0xa1
|
|
|
|
/* i8259A PIC related value */
|
|
#define PIC_CASCADE_IR 2
|
|
#define MASTER_ICW4_DEFAULT 0x01
|
|
#define SLAVE_ICW4_DEFAULT 0x01
|
|
#define PIC_ICW4_AEOI 2
|
|
|
|
#endif /* !_MACH_IO_PORTS_H */
|