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#ifndef __X86_TIME_H__
#define __X86_TIME_H__
#include <asm/msr.h>
/*
* PV TSC emulation modes:
* 0 = guest rdtsc/p executed natively when monotonicity can be guaranteed
* and emulated otherwise (with frequency scaled if necessary)
* 1 = guest rdtsc/p always emulated at 1GHz (kernel and user)
* 2 = guest rdtsc always executed natively (no monotonicity/frequency
* guarantees); guest rdtscp emulated at native frequency if
* unsupported by h/w, else executed natively
* 3 = Removed, was PVRDTSCP.
*/
#define TSC_MODE_DEFAULT 0
#define TSC_MODE_ALWAYS_EMULATE 1
#define TSC_MODE_NEVER_EMULATE 2
typedef u64 cycles_t;
extern bool disable_tsc_sync;
static inline cycles_t get_cycles(void)
{
return rdtsc_ordered();
}
unsigned long
mktime (unsigned int year, unsigned int mon,
unsigned int day, unsigned int hour,
unsigned int min, unsigned int sec);
int time_suspend(void);
int time_resume(void);
void init_percpu_time(void);
void time_latch_stamps(void);
struct ioreq;
int hwdom_pit_access(struct ioreq *ioreq);
int cpu_frequency_change(u64 freq);
void pit_broadcast_enter(void);
void pit_broadcast_exit(void);
int pit_broadcast_is_available(void);
uint64_t acpi_pm_tick_to_ns(uint64_t ticks);
uint64_t ns_to_acpi_pm_tick(uint64_t ns);
uint64_t tsc_ticks2ns(uint64_t ticks);
uint64_t pv_soft_rdtsc(const struct vcpu *v, const struct cpu_user_regs *regs);
u64 gtime_to_gtsc(struct domain *d, u64 time);
u64 gtsc_to_gtime(struct domain *d, u64 tsc);
int tsc_set_info(struct domain *d, uint32_t tsc_mode, uint64_t elapsed_nsec,
uint32_t gtsc_khz, uint32_t incarnation);
void tsc_get_info(struct domain *d, uint32_t *tsc_mode, uint64_t *elapsed_nsec,
uint32_t *gtsc_khz, uint32_t *incarnation);
void force_update_vcpu_system_time(struct vcpu *v);
bool clocksource_is_tsc(void);
int host_tsc_is_safe(void);
u64 stime2tsc(s_time_t stime);
struct time_scale;
void set_time_scale(struct time_scale *ts, u64 ticks_per_sec);
u64 scale_delta(u64 delta, const struct time_scale *scale);
#endif /* __X86_TIME_H__ */
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