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Vegard Nossum77ef50a2008-06-18 17:08:48 +02001#ifndef ASM_X86__I8253_H
2#define ASM_X86__I8253_H
Thomas Gleixner0190dae2007-10-12 23:04:06 +02003
Thomas Gleixner0190dae2007-10-12 23:04:06 +02004/* i8253A PIT registers */
5#define PIT_MODE 0x43
6#define PIT_CH0 0x40
7#define PIT_CH2 0x42
8
9extern spinlock_t i8253_lock;
10
Thomas Gleixner0190dae2007-10-12 23:04:06 +020011extern struct clock_event_device *global_clock_event;
12
13extern void setup_pit_timer(void);
14
Alan Cox466eed22008-01-30 13:33:14 +010015#define inb_pit inb_p
16#define outb_pit outb_p
17
Vegard Nossum77ef50a2008-06-18 17:08:48 +020018#endif /* ASM_X86__I8253_H */