#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 */