1 

18 #define LOW_PRIORITY 0x7FFFFFFF

19 

21 #define HIGH_PRIORITY 0x80000000

22 

24 #define NORMAL_PRIORITY 0

25 

29 extern void enable_interrupt(void);

30 

34 extern void disable_interrupt(void);

35 

44 extern int register_irq(int idx, int priority,

45  int (*handler)(void *), void *data);

46 

54 extern int unregister_irq(int idx, int (*handler)(void *), void *data);

55 

62 extern void irq_local_restore(unsigned long value);

63 

70 extern void irq_local_save(unsigned long *value);