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C/C++ Source or Header  |  2008-12-24  |  348 b   |  19 lines
  1. #ifndef _ASM_X86_I8253_H
  2. #define _ASM_X86_I8253_H
  3.  
  4. /* i8253A PIT registers */
  5. #define PIT_MODE        0x43
  6. #define PIT_CH0            0x40
  7. #define PIT_CH2            0x42
  8.  
  9. extern spinlock_t i8253_lock;
  10.  
  11. extern struct clock_event_device *global_clock_event;
  12.  
  13. extern void setup_pit_timer(void);
  14.  
  15. #define inb_pit        inb_p
  16. #define outb_pit    outb_p
  17.  
  18. #endif /* _ASM_X86_I8253_H */
  19.