timer.h

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/*
 * Copyright (c) 2024 Tenstorrent AI ULC
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef TIMER_H
#define TIMER_H
 
#include <stdint.h>
 
#define NS_PER_REFCLK 20
#define REFCLK_F_MHZ  50
#define WAIT_1US      50                /* For 50 MHZ REFCLK (20 ns period) */
#define WAIT_100NS    5                 /* For 50 MHZ REFCLK (20 ns period) */
#define WAIT_1MS      (1000 * WAIT_1US) /* For 50MHz REFCLK (20ns period) */
#define WAIT_20NS     1                 /* For 50 MHz REFCLK */
 
uint64_t TimerTimestamp(void); /* Get current reflck timestamp */
void Wait(uint32_t cycles);
 
static inline uint32_t TimerGetCyclesForNsTime(uint32_t ns)
{
        return (ns + NS_PER_REFCLK - 1) / NS_PER_REFCLK;
}
 
static inline void WaitNs(uint32_t ns)
{
        uint32_t cycles = TimerGetCyclesForNsTime(ns);
 
        Wait(cycles);
}
 
static inline void WaitUs(uint32_t us)
{
        uint32_t cycles = TimerGetCyclesForNsTime(us * 1000);
 
        Wait(cycles);
}
 
static inline void WaitMs(uint32_t ms)
{
        uint32_t cycles = TimerGetCyclesForNsTime(ms * 1000000);
 
        Wait(cycles);
}
#endif