i8253.h 416 B

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  1. /*
  2. * Machine specific IO port address definition for generic.
  3. * Written by Osamu Tomita <tomita@cinet.co.jp>
  4. */
  5. #ifndef __ASM_I8253_H
  6. #define __ASM_I8253_H
  7. #include <linux/spinlock.h>
  8. /* i8253A PIT registers */
  9. #define PIT_MODE 0x43
  10. #define PIT_CH0 0x40
  11. #define PIT_CH2 0x42
  12. #define PIT_TICK_RATE 1193182UL
  13. extern spinlock_t i8253_lock;
  14. extern void setup_pit_timer(void);
  15. #endif /* __ASM_I8253_H */