root/include/asm-x86/i8253.h

INCLUDED FROM

#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 */