198 lines
6.5 KiB
C
198 lines
6.5 KiB
C
/*
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* Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
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* Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "los_tick.h"
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#include "los_task.h"
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#include "los_swtmr.h"
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#include "los_config.h"
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#ifdef __cplusplus
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#if __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#endif /* __cplusplus */
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LITE_OS_SEC_BSS UINT64 g_ullTickCount;
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LITE_OS_SEC_BSS UINT32 g_ticksPerSec;
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LITE_OS_SEC_BSS UINT32 g_uwCyclePerSec;
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LITE_OS_SEC_BSS UINT32 g_cyclesPerTick;
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LITE_OS_SEC_BSS UINT32 g_sysClock;
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#if (LOSCFG_BASE_CORE_TICK_HW_TIME == 1)
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extern VOID platform_tick_handler(VOID);
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#endif
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LITE_OS_SEC_TEXT VOID OsTickHandler(VOID)
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{
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#if (LOSCFG_BASE_CORE_TICK_HW_TIME == 1)
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platform_tick_handler();
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#endif
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g_ullTickCount++;
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#if (LOSCFG_BASE_CORE_TIMESLICE == 1)
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OsTimesliceCheck();
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#endif
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OsTaskScan(); // task timeout scan
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#if (LOSCFG_BASE_CORE_SWTMR == 1)
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(VOID)OsSwtmrScan();
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#endif
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}
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UINT32 LOS_SysClockGet(VOID)
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{
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return g_sysClock;
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}
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/*****************************************************************************
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Function : LOS_TickCountGet
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Description : get current tick
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Input : None
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Output : None
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Return : current tick
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*****************************************************************************/
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LITE_OS_SEC_TEXT_MINOR UINT64 LOS_TickCountGet(VOID)
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{
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return g_ullTickCount;
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}
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/*****************************************************************************
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Function : LOS_CyclePerTickGet
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Description : Get System cycle number corresponding to each tick
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Input : None
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Output : None
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Return : cycle number corresponding to each tick
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*****************************************************************************/
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LITE_OS_SEC_TEXT_MINOR UINT32 LOS_CyclePerTickGet(VOID)
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{
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return g_cyclesPerTick;
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}
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/*****************************************************************************
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Function : LOS_MS2Tick
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Description : milliseconds convert to Tick
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Input : millisec ---------- milliseconds
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Output : None
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Return : Tick
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*****************************************************************************/
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LITE_OS_SEC_TEXT_MINOR UINT32 LOS_MS2Tick(UINT32 millisec)
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{
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if (millisec == OS_NULL_INT) {
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return OS_NULL_INT;
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}
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return ((UINT64)millisec * LOSCFG_BASE_CORE_TICK_PER_SECOND) / OS_SYS_MS_PER_SECOND;
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}
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/*****************************************************************************
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Function : LOS_Tick2MS
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Description : Tick convert to milliseconds
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Input : ticks ---------- ticks
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Output : None
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Return : milliseconds
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*****************************************************************************/
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LITE_OS_SEC_TEXT_MINOR UINT32 LOS_Tick2MS(UINT32 ticks)
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{
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return ((UINT64)ticks * OS_SYS_MS_PER_SECOND) / LOSCFG_BASE_CORE_TICK_PER_SECOND;
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}
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/*****************************************************************************
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Function : OsCpuTick2MS
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Description : cycle convert to milliseconds
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Input : cpuTick ---------- cycle
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Output : msHi ---------- High 32 milliseconds
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msLo ---------- Low 32 milliseconds
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Return : LOS_OK on success ,or error code on failure
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*****************************************************************************/
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LITE_OS_SEC_TEXT_INIT UINT32 OsCpuTick2MS(CpuTick *cpuTick, UINT32 *msHi, UINT32 *msLo)
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{
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UINT64 tmpCpuTick;
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DOUBLE temp;
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if ((cpuTick == NULL) || (msHi == NULL) || (msLo == NULL)) {
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return LOS_ERRNO_SYS_PTR_NULL;
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}
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if (g_sysClock == 0) {
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return LOS_ERRNO_SYS_CLOCK_INVALID;
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}
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tmpCpuTick = ((UINT64)cpuTick->cntHi << OS_SYS_MV_32_BIT) | cpuTick->cntLo;
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temp = tmpCpuTick / ((DOUBLE)g_sysClock / OS_SYS_MS_PER_SECOND);
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tmpCpuTick = (UINT64)temp;
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*msLo = (UINT32)tmpCpuTick;
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*msHi = (UINT32)(tmpCpuTick >> OS_SYS_MV_32_BIT);
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return LOS_OK;
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}
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/*****************************************************************************
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Function : OsCpuTick2US
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Description : cycle convert to Microsecond
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Input : cpuTick ---------- cycle
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Output : usHi ---------- High 32 Microsecond
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usLo ---------- Low 32 Microsecond
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Return : LOS_OK on success ,or error code on failure
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*****************************************************************************/
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LITE_OS_SEC_TEXT_INIT UINT32 OsCpuTick2US(CpuTick *cpuTick, UINT32 *usHi, UINT32 *usLo)
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{
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UINT64 tmpCpuTick;
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DOUBLE temp;
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if ((cpuTick == NULL) || (usHi == NULL) || (usLo == NULL)) {
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return LOS_ERRNO_SYS_PTR_NULL;
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}
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if (g_sysClock == 0) {
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return LOS_ERRNO_SYS_CLOCK_INVALID;
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}
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tmpCpuTick = ((UINT64)cpuTick->cntHi << OS_SYS_MV_32_BIT) | cpuTick->cntLo;
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temp = tmpCpuTick / ((DOUBLE)g_sysClock / OS_SYS_US_PER_SECOND);
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tmpCpuTick = (UINT64)temp;
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*usLo = (UINT32)tmpCpuTick;
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*usHi = (UINT32)(tmpCpuTick >> OS_SYS_MV_32_BIT);
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return LOS_OK;
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}
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#ifdef __cplusplus
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#if __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __cplusplus */
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