mirror of
https://github.com/projectacrn/acrn-hypervisor.git
synced 2025-04-29 20:24:00 +00:00
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>
32 lines
550 B
C
32 lines
550 B
C
/*
|
|
* Copyright (C) 2021 Intel Corporation.
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*/
|
|
|
|
#include <common/ticks.h>
|
|
|
|
/* cpu_ticks() and cpu_tickrate() are provided in arch specific modules */
|
|
|
|
uint64_t us_to_ticks(uint32_t us)
|
|
{
|
|
return (((uint64_t)us * (uint64_t)cpu_tickrate()) / 1000UL);
|
|
}
|
|
|
|
uint64_t ticks_to_us(uint64_t ticks)
|
|
{
|
|
uint64_t us = 0UL;
|
|
uint64_t khz = cpu_tickrate();
|
|
|
|
if (khz != 0U) {
|
|
us = (ticks * 1000UL) / (uint64_t)khz;
|
|
}
|
|
|
|
return us;
|
|
}
|
|
|
|
uint64_t ticks_to_ms(uint64_t ticks)
|
|
{
|
|
return ticks / (uint64_t)cpu_tickrate();
|
|
}
|