65 lines
1.8 KiB
C
65 lines
1.8 KiB
C
|
#ifndef _ASMi386_TIMER_H
|
||
|
|
#define _ASMi386_TIMER_H
|
||
|
|
#include <linux/init.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);
|
||
|
|
};
|
||
|
|
|
||
|
|
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_TIMER
|
||
|
|
extern struct init_timer_opts timer_cyclone_init;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
extern unsigned long calibrate_tsc(void);
|
||
|
|
extern void init_cpu_khz(void);
|
||
|
|
#ifdef CONFIG_HPET_TIMER
|
||
|
|
extern struct init_timer_opts timer_hpet_init;
|
||
|
|
extern unsigned long calibrate_tsc_hpet(unsigned long *tsc_hpet_quotient_ptr);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef CONFIG_X86_PM_TIMER
|
||
|
|
extern struct init_timer_opts timer_pmtmr_init;
|
||
|
|
#endif
|
||
|
|
#endif
|