include/clock.h

   1 #include <types.h>
   2
   3 #ifndef CLOCK_H
   4 #define CLOCK_H
   5
   6 struct clocksource {
   7         uint32_t        shift;
   8         uint32_t        mult;
   9         uint64_t        (*read)(void);
  10         uint64_t        cycle_last;
  11         uint64_t        mask;
  12
  13 };
  14
  15 static inline uint32_t cyc2ns(struct clocksource *cs, uint64_t cycles)
  16 {
  17         uint64_t ret = cycles;
  18         ret = (ret * cs->mult) >> cs->shift;
  19         return ret;
  20 }
  21
  22 int init_clock(struct clocksource *);
  23
  24 uint64_t get_time_ns(void);
  25
  26 uint32_t clocksource_hz2mult(uint32_t hz, uint32_t shift_constant);
  27
  28 int is_timeout(uint64_t start_ns, uint64_t time_offset_ns);
  29
  30 // void udelay(unsigned long usecs);
  31
  32 void ndelay(unsigned long nsecs);
  33 void mdelay(unsigned long msecs);
  34
  35 #define SECOND ((uint64_t)(1000 * 1000 * 1000))
  36 #define MSECOND ((uint64_t)(1000 * 1000))
  37 #define USECOND ((uint64_t)(1000))
  38
  39 #endif /* CLOCK_H */