#ifndef _ASMi386_TIMER_H#define _ASMi386_TIMER_H#include <linux/init.h>#include <linux/pm.h> /** * struct timer_ops - used to define a timer source * * @name: name of the timer. * @init: Probes and initializes the timer. Takes clock= override  *        string as an argument. Returns 0 on success, anything else *        on failure. * @mark_offset: called by the timer interrupt. * @get_offset:  called by gettimeofday(). Returns the number of microseconds *               since the last timer interupt. * @monotonic_clock: returns the number of nanoseconds since the init of the *                   timer. * @delay: delays this many clock cycles. */struct timer_opts {	char* name;	void (*mark_offset)(void);	unsigned long (*get_offset)(void);	unsigned long long (*monotonic_clock)(void);	void (*delay)(unsigned long);	unsigned long (*read_timer)(void);	int (*suspend)(pm_message_t state);	int (*resume)(void);}; struct init_timer_opts {	int (*init)(char *override);	struct timer_opts *opts;}; #define TICK_SIZE (tick_nsec / 1000) extern struct timer_opts* __init select_timer(void);extern void clock_fallback(void);void setup_pit_timer(void); /* Modifiers for buggy PIT handling */ extern int pit_latch_buggy; extern struct timer_opts *cur_timer;extern int timer_ack; /* list of externed timers */extern struct timer_opts timer_none;extern struct timer_opts timer_pit;extern struct init_timer_opts timer_pit_init;extern struct init_timer_opts timer_tsc_init;#ifdef CONFIG_X86_CYCLONE_TIMERextern struct init_timer_opts timer_cyclone_init;#endif extern unsigned long calibrate_tsc(void);extern unsigned long read_timer_tsc(void);extern void init_cpu_khz(void);extern int recalibrate_cpu_khz(void);#ifdef CONFIG_HPET_TIMERextern struct init_timer_opts timer_hpet_init;extern unsigned long calibrate_tsc_hpet(unsigned long *tsc_hpet_quotient_ptr);#endif #ifdef CONFIG_X86_PM_TIMERextern struct init_timer_opts timer_pmtmr_init;#endif#endif