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#include <types.h>
#ifndef CLOCK_H
#define CLOCK_H
struct clocksource {
uint32_t shift;
uint32_t mult;
uint64_t (*read)(void);
uint64_t cycle_last;
uint64_t mask;
};
static inline uint32_t cyc2ns(struct clocksource *cs, uint64_t cycles)
{
uint64_t ret = cycles;
ret = (ret * cs->mult) >> cs->shift;
return ret;
}
int init_clock(struct clocksource *);
uint64_t get_time_ns(void);
uint32_t clocksource_hz2mult(uint32_t hz, uint32_t shift_constant);
int is_timeout(uint64_t start_ns, uint64_t time_offset_ns);
// void udelay(unsigned long usecs);
void ndelay(unsigned long nsecs);
void mdelay(unsigned long msecs);
#define SECOND ((uint64_t)(1000 * 1000 * 1000))
#define MSECOND ((uint64_t)(1000 * 1000))
#define USECOND ((uint64_t)(1000))
#endif /* CLOCK_H */
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