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5a2b89b0a4
Generalize and split basic cpu cycle/tick routines from x86/timer: - Instead of rdstc(), use cpu_ticks() in generic code. - Instead of get_tsc_khz(), use cpu_tickrate() in generic code. - Include "common/ticks.h" instead of "x86/timer.h" in generic code. - CYCLES_PER_MS is renamed to TICKS_PER_MS. The x86 specific API rdstc() and get_tsc_khz(), as well as TSC_PER_MS are still available in arch/x86/tsc.h but only for x86 specific usage. Tracked-On: #5920 Signed-off-by: Rong Liu <rong2.liu@intel.com> Signed-off-by: Yi Liang <yi.liang@intel.com>
54 lines
920 B
C
54 lines
920 B
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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* @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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* @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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