58 lines
1.1 KiB
C
58 lines
1.1 KiB
C
/*
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* Copyright (C) 2021 Intel Corporation.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef COMMON_TICKS_H
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#define COMMON_TICKS_H
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#include <types.h>
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#define TICKS_PER_MS us_to_ticks(1000U)
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/**
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* @brief Read current CPU tick count.
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*
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* @remark On x86, this is the Time Stamp Counter (TSC) value of the current logical CPU.
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*
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* @return CPU ticks
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*/
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uint64_t cpu_ticks(void);
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/**
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* @brief Get CPU tick frequency in KHz.
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*
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* @remark On x86, this is the Time Stamp Counter (TSC) frequency of the current logical CPU.
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*
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* @return CPU frequency (KHz)
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*/
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uint32_t cpu_tickrate(void);
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/**
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* @brief Convert micro seconds to CPU ticks.
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*
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* @param[in] us micro seconds to convert
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* @return CPU ticks
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*/
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uint64_t us_to_ticks(uint32_t us);
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/**
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* @brief Convert CPU cycles to micro seconds.
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*
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* @param[in] ticks CPU ticks to convert
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* @return microsecond
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*/
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uint64_t ticks_to_us(uint64_t ticks);
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/**
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* @brief Convert CPU cycles to milli seconds.
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*
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* @param[in] ticks CPU ticks to convert
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* @return millisecond
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*/
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uint64_t ticks_to_ms(uint64_t ticks);
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#endif /* COMMON_TICKS_H */
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