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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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C
12345678910111213141516171819202122232425262728293031/* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Machine specific IO port address definition for generic. * Written by Osamu Tomita <tomita@cinet.co.jp> */#ifndef __LINUX_I8253_H#define __LINUX_I8253_H
#include <linux/param.h>#include <linux/spinlock.h>#include <linux/timex.h>
/* i8253A PIT registers */#define PIT_MODE 0x43#define PIT_CH0 0x40#define PIT_CH2 0x42
#define PIT_LATCH ((PIT_TICK_RATE + HZ/2) / HZ)
extern raw_spinlock_t i8253_lock;extern struct clock_event_device i8253_clockevent;extern void clockevent_i8253_init(bool oneshot);extern void clockevent_i8253_disable(void);
extern void setup_pit_timer(void);
#endif /* __LINUX_I8253_H */