/* * Machine specific IO port address definition for generic. * Written by Osamu Tomita <tomita@cinet.co.jp> */
#ifndef __ASM_I8253_H #define __ASM_I8253_H
/* i8253A PIT registers */ #define PIT_MODE 0x43 #define PIT_CH0 0x40 #define PIT_CH2 0x42 /* 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 extern void setup_pit_timer(void);
#endif /* __ASM_I8253_H */
