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- #ifndef ASM_X86__I8253_H
- #define ASM_X86__I8253_H
- /* i8253A PIT registers */
- #define PIT_MODE 0x43
- #define PIT_CH0 0x40
- #define PIT_CH2 0x42
- extern spinlock_t i8253_lock;
- extern struct clock_event_device *global_clock_event;
- extern void setup_pit_timer(void);
- #define inb_pit inb_p
- #define outb_pit outb_p
- #endif /* ASM_X86__I8253_H */
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