2 * Machine specific IO port address definition for generic.
3 * Written by Osamu Tomita <tomita@cinet.co.jp>
8 /* i8253A PIT registers */
13 /* i8259A PIC registers */
14 #define PIC_MASTER_CMD 0x20
15 #define PIC_MASTER_IMR 0x21
16 #define PIC_MASTER_ISR PIC_MASTER_CMD
17 #define PIC_MASTER_POLL PIC_MASTER_ISR
18 #define PIC_MASTER_OCW3 PIC_MASTER_ISR
19 #define PIC_SLAVE_CMD 0xa0
20 #define PIC_SLAVE_IMR 0xa1
22 /* i8259A PIC related value */
23 #define PIC_CASCADE_IR 2
24 #define MASTER_ICW4_DEFAULT 0x01
25 #define SLAVE_ICW4_DEFAULT 0x01
26 #define PIC_ICW4_AEOI 2
28 extern void setup_pit_timer(void);
30 #endif /* __ASM_I8253_H */