* Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
* Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
* @defgroup los_tick
* @ingroup kernel
*/
#ifndef _LOS_TICK_H
#define _LOS_TICK_H
#include "los_error.h"
#include "los_timer.h"
#ifdef __cplusplus
#if __cplusplus
extern "C" {
#endif
#endif
* @ingroup los_tick
* Tick error code: The Tick configuration is incorrect.
*
* Value: 0x02000400
*
* Solution: Change values of the OS_SYS_CLOCK and LOSCFG_BASE_CORE_TICK_PER_SECOND
* system time configuration modules in Los_config.h.
*/
#define LOS_ERRNO_TICK_CFG_INVALID LOS_ERRNO_OS_ERROR(LOS_MOD_TICK, 0x00)
* @ingroup los_tick
* Tick error code: The system tick timer uninitialized.
*
* Value: 0x02000401
*
* Solution: None.
*/
#define LOS_ERRNO_TICK_NO_HWTIMER LOS_ERRNO_OS_ERROR(LOS_MOD_TICK, 0x01)
* @ingroup los_tick
* Tick error code: The number of Ticks is too small.
*
* Value: 0x02000402
*
* Solution: Change values of the OS_SYS_CLOCK and LOSCFG_BASE_CORE_TICK_PER_SECOND
* system time configuration modules according to the SysTick_Config function.
*/
#define LOS_ERRNO_TICK_PER_SEC_TOO_SMALL LOS_ERRNO_OS_ERROR(LOS_MOD_TICK, 0x02)
* @ingroup los_tick
* @brief: System timer cycles get function.
*
* @par Description:
* This API is used to get system timer cycles.
*
* @attention:
* <ul><li>None.</li></ul>
*
* @param: None.
*
* @retval: current system cycles.
*
* @par Dependency:
* <ul><li>los_tick.h: the header file that contains the API declaration.</li></ul>
* @see None.
*
* */
extern UINT64 LOS_SysCycleGet(VOID);
* @ingroup los_tick
* Number of milliseconds in one second.
*/
#define OS_SYS_MS_PER_SECOND 1000
* @ingroup los_tick
* Ticks per second
*/
extern UINT32 g_ticksPerSec;
* @ingroup los_tick
* Cycles per Second
*/
extern UINT32 g_uwCyclePerSec;
* @ingroup los_tick
* Cycles per Tick
*/
extern UINT32 g_cyclesPerTick;
* @ingroup los_tick
* System Clock
*/
extern UINT32 g_sysClock;
* @ingroup los_tick
* Number of microseconds in one second.
*/
#define OS_SYS_US_PER_SECOND 1000000
#define OS_SYS_NS_PER_SECOND 1000000000
#define OS_SYS_NS_PER_MS 1000000
#define OS_SYS_NS_PER_US 1000
#define OS_CYCLE_PER_TICK (g_sysClock / LOSCFG_BASE_CORE_TICK_PER_SECOND)
#define OS_NS_PER_CYCLE (OS_SYS_NS_PER_SECOND / g_sysClock)
#define OS_MS_PER_TICK (OS_SYS_MS_PER_SECOND / LOSCFG_BASE_CORE_TICK_PER_SECOND)
#define OS_US_PER_TICK (OS_SYS_US_PER_SECOND / LOSCFG_BASE_CORE_TICK_PER_SECOND)
#define OS_NS_PER_TICK (OS_SYS_NS_PER_SECOND / LOSCFG_BASE_CORE_TICK_PER_SECOND)
#define OS_SYS_CYCLE_TO_NS(cycle, freq) ((cycle) / (freq)) * OS_SYS_NS_PER_SECOND + \
((cycle) % (freq) * OS_SYS_NS_PER_SECOND / (freq))
#define OS_SYS_NS_TO_CYCLE(time, freq) (((time) / OS_SYS_NS_PER_SECOND) * (freq) + \
((time) % OS_SYS_NS_PER_SECOND) * (freq) / OS_SYS_NS_PER_SECOND)
#define OS_SYS_TICK_TO_CYCLE(ticks) (((UINT64)(ticks) * g_sysClock) / LOSCFG_BASE_CORE_TICK_PER_SECOND)
#define OS_SYS_CYCLE_TO_TICK(cycle) ((((UINT64)(cycle)) * LOSCFG_BASE_CORE_TICK_PER_SECOND) / g_sysClock)
* @ingroup los_tick
* System time basic function error code: Null pointer.
*
* Value: 0x02000010
*
* Solution: Check whether the input parameter is null.
*/
#define LOS_ERRNO_SYS_PTR_NULL LOS_ERRNO_OS_ERROR(LOS_MOD_SYS, 0x10)
* @ingroup los_tick
* System time basic function error code: Invalid system clock configuration.
*
* Value: 0x02000011
*
* Solution: Configure a valid system clock in los_config.h.
*/
#define LOS_ERRNO_SYS_CLOCK_INVALID LOS_ERRNO_OS_ERROR(LOS_MOD_SYS, 0x11)
* @ingroup los_tick
* System time basic function error code: This error code is not in use temporarily.
*
* Value: 0x02000012
*
* Solution: None.
*/
#define LOS_ERRNO_SYS_MAXNUMOFCORES_IS_INVALID LOS_ERRNO_OS_ERROR(LOS_MOD_SYS, 0x12)
* @ingroup los_tick
* System time error code: This error code is not in use temporarily.
*
* Value: 0x02000013
*
* Solution: None.
*/
#define LOS_ERRNO_SYS_PERIERRCOREID_IS_INVALID LOS_ERRNO_OS_ERROR(LOS_MOD_SYS, 0x13)
* @ingroup los_tick
* System time error code: This error code is not in use temporarily.
*
* Value: 0x02000014
*
* Solution: None.
*/
#define LOS_ERRNO_SYS_HOOK_IS_FULL LOS_ERRNO_OS_ERROR(LOS_MOD_SYS, 0x14)
* @ingroup los_tick
* System time error code: The Tick Timer must be registered before kernel initialization.
*
* Value: 0x02000015
*
* Solution: None.
*/
#define LOS_ERRNO_SYS_TIMER_IS_RUNNING LOS_ERRNO_OS_ERROR(LOS_MOD_SYS, 0x15)
* @ingroup los_tick
* System time error code: The tick timer method is NULL.
*
* Value: 0x02000016
*
* Solution: None.
*/
#define LOS_ERRNO_SYS_HOOK_IS_NULL LOS_ERRNO_OS_ERROR(LOS_MOD_SYS, 0x16)
* @ingroup los_tick
* System time error code: The tick timer addr fault.
*
* Value: 0x02000017
*
* Solution: None.
*/
#define LOS_ERRNO_SYS_TIMER_ADDR_FAULT LOS_ERRNO_OS_ERROR(LOS_MOD_SYS, 0x16)
* @ingroup los_tick
* system time structure.
*/
typedef struct TagSysTime {
UINT16 uwYear;
UINT8 ucMonth;
UINT8 ucDay;
UINT8 ucHour;
UINT8 ucMinute;
UINT8 ucSecond;
UINT8 ucWeek;
} SYS_TIME_S;
UINT64 OsTickTimerReload(UINT64 period);
#if (LOSCFG_BASE_CORE_TICK_WTIMER == 0)
VOID OsTickTimerBaseReset(UINT64 currTime);
#endif
UINT32 OsTickTimerInit(VOID);
VOID OsTickSysTimerStartTimeSet(UINT64 currTime);
STATIC INLINE UINT64 OsTimeConvertFreq(UINT64 time, UINT32 oldFreq, UINT32 newFreq)
{
if (oldFreq >= newFreq) {
return (time / (oldFreq / newFreq));
}
return (time * (newFreq / oldFreq));
}
* @ingroup los_tick
* @brief Adjust the system tick timer clock frequency function hooks.
*
* @par Description:
* This API is used to adjust the system tick timer clock frequency.
* @attention
* <ul>
* <li>None</li>
* </ul>
*
* @param param [IN] Function parameters.
*
* @retval 0: Adjust the system tick timer clock frequency failed.
* @retval more than zero: Adjust after the system tick timer clock frequency.
* @par Dependency:
* <ul><li>los_tick.h: the header file that contains the API declaration.</li></ul>
* @see None
*/
typedef UINT32 (*SYS_TICK_FREQ_ADJUST_FUNC)(UINTPTR param);
* @ingroup los_tick
* @brief Adjust the system tick timer clock frequency.
*
* @par Description:
* This API is used to adjust the system tick timer clock frequency.
* @attention
* <ul>
* <li>This function needs to be invoked only when the clock frequency of the system tick timer adjust as a result of
* changing the CPU frequency.</li>
* </ul>
*
* @param handler [IN] Adjust the system tick timer clock frequency function hooks.
* @param param [IN] Function parameters.
*
* @retval LOS_OK or Error code.
* @par Dependency:
* <ul><li>los_tick.h: the header file that contains the API declaration.</li></ul>
* @see None
*/
extern UINT32 LOS_SysTickClockFreqAdjust(const SYS_TICK_FREQ_ADJUST_FUNC handler, UINTPTR param);
* @ingroup los_tick
* @brief Obtain the number of Ticks.
*
* @par Description:
* This API is used to obtain the number of Ticks.
* @attention
* <ul>
* <li>None</li>
* </ul>
*
* @param None
*
* @retval UINT64 The number of Ticks.
* @par Dependency:
* <ul><li>los_tick.h: the header file that contains the API declaration.</li></ul>
* @see None
*/
extern UINT64 LOS_TickCountGet(VOID);
* @ingroup los_tick
* @brief Obtain the number of cycles in one second.
*
* @par Description:
* This API is used to obtain the number of cycles in one second.
* @attention
* <ul>
* <li>None</li>
* </ul>
*
* @param None
*
* @retval UINT32 Number of cycles obtained in one second.
* @par Dependency:
* <ul><li>los_tick.h: the header file that contains the API declaration.</li></ul>
* @see None
*/
extern UINT32 LOS_CyclePerTickGet(VOID);
* @ingroup los_tick
* @brief Convert Ticks to milliseconds.
*
* @par Description:
* This API is used to convert Ticks to milliseconds.
* @attention
* <ul>
* <li>The number of milliseconds obtained through the conversion is 32-bit.</li>
* </ul>
*
* @param ticks [IN] Number of Ticks. The value range is (0,OS_SYS_CLOCK).
*
* @retval UINT32 Number of milliseconds obtained through the conversion. Ticks are successfully converted to
* milliseconds.
* @par Dependency:
* <ul><li>los_tick.h: the header file that contains the API declaration.</li></ul>
* @see LOS_MS2Tick
*/
extern UINT32 LOS_Tick2MS(UINT32 ticks);
* @ingroup los_tick
* @brief Convert milliseconds to Ticks.
*
* @par Description:
* This API is used to convert milliseconds to Ticks.
* @attention
* <ul>
* <li>If the parameter passed in is equal to 0xFFFFFFFF, the retval is 0xFFFFFFFF. Pay attention to the value to be
* converted because data possibly overflows.</li>
* </ul>
*
* @param millisec [IN] Number of milliseconds.
*
* @retval UINT32 Number of Ticks obtained through the conversion.
* @par Dependency:
* <ul><li>los_tick.h: the header file that contains the API declaration.</li></ul>
* @see LOS_Tick2MS
*/
extern UINT32 LOS_MS2Tick(UINT32 millisec);
* @ingroup los_tick
* @brief Re-initializes the system tick timer.
*
* @par Description:
* This API is used to re-initialize the system Tick timer.
* @attention
*
* @param timer [IN] Specify the tick timer.
* @param tickHandler [IN] Tick Interrupts the execution of the hook function.
*
* @retval LOS_OK or Error code.
* @par Dependency:
* <ul><li>los_tick.h: the header file that contains the API declaration.</li></ul>
* @see
*/
extern UINT32 LOS_TickTimerRegister(const ArchTickTimer *timer, const HWI_PROC_FUNC tickHandler);
* @ingroup los_task
* @brief: cpu delay.
*
* @par Description:
* This API is used to cpu delay, no task switching.
*
* @attention:
* <ul><li>None.</li></ul>
*
* @param UINT64 [IN] delay times, microseconds.
*
* @retval: None.
* @par Dependency:
* <ul><li>los_task.h: the header file that contains the API declaration.</li></ul>
* @see None.
*/
extern VOID LOS_UDelay(UINT64 microseconds);
* @ingroup los_task
* @brief: cpu delay.
*
* @par Description:
* This API is used to cpu delay, no task switching.
*
* @attention:
* <ul><li>None.</li></ul>
*
* @param UINT32 [IN] delay times, millisecond.
*
* @retval: None.
* @par Dependency:
* <ul><li>los_task.h: the header file that contains the API declaration.</li></ul>
* @see None.
*/
extern VOID LOS_MDelay(UINT32 millisec);
* @ingroup los_task
* @brief: cpu nanosecond get.
*
* @par Description:
* This API is used to get the current number of nanoseconds.
*
* @attention:
* <ul><li>None.</li></ul>
*
* @param none.
*
* @retval: None.
* @par Dependency:
* <ul><li>los_task.h: the header file that contains the API declaration.</li></ul>
* @see None.
*/
extern UINT64 LOS_CurrNanosec(VOID);
* @ingroup los_tick
* @brief Handle the system tick timeout.
*
* @par Description:
* This API is called when the system tick timeout and triggers the interrupt.
*
* @attention
* <ul>
* <li>None.</li>
* </ul>
*
* @param none.
*
* @retval None.
* @par Dependency:
* <ul><li>los_tick.h: the header file that contains the API declaration.</li></ul>
* @see None.
*/
extern VOID OsTickHandler(VOID);
* @ingroup los_tick
* Define the CPU Tick structure.
*/
typedef struct TagCpuTick {
UINT32 cntHi;
UINT32 cntLo;
} CpuTick;
* @ingroup los_tick
* Number of operable bits of a 32-bit operand
*/
#define OS_SYS_MV_32_BIT 32
* @ingroup los_tick
* Number of milliseconds in one second.
*/
#define OS_SYS_MS_PER_SECOND 1000
* @ingroup los_tick
* Number of microseconds in one second.
*/
#define OS_SYS_US_PER_SECOND 1000000
#define OS_SYS_US_PER_MS 1000
* @ingroup los_tick
* The maximum length of name.
*/
#define OS_SYS_APPVER_NAME_MAX 64
* @ingroup los_tick
* The magic word.
*/
#define OS_SYS_MAGIC_WORD 0xAAAAAAAA
* @ingroup los_tick
* The initialization value of stack space.
*/
#define OS_SYS_EMPTY_STACK 0xCACACACA
* @ingroup los_tick
* @brief Convert cycles to milliseconds.
*
* @par Description:
* This API is used to convert cycles to milliseconds.
* @attention
* <ul>
* <li>None.</li>
* </ul>
*
* @param cpuTick [IN] Number of CPU cycles.
* @param msHi [OUT] Upper 32 bits of the number of milliseconds.
* @param msLo [OUT] Lower 32 bits of the number of milliseconds.
*
* @retval #LOS_ERRNO_SYS_PTR_NULL 0x02000011: Invalid parameter.
* @retval #LOS_OK 0: Cycles are successfully converted to microseconds.
* @par Dependency:
* <ul><li>los_tick.h: the header file that contains the API declaration.</li></ul>
* @see None.
*/
extern UINT32 OsCpuTick2MS(CpuTick *cpuTick, UINT32 *msHi, UINT32 *msLo);
* @ingroup los_tick
* @brief Convert cycles to microseconds.
*
* @par Description:
* This API is used to convert cycles to microseconds.
* @attention
* <ul>
* <li>None.</li>
* </ul>
*
* @param cpuTick [IN] Number of CPU cycles.
* @param usHi [OUT] Upper 32 bits of the number of microseconds.
* @param usLo [OUT] Lower 32 bits of the number of microseconds.
*
* @retval #LOS_ERRNO_SYS_PTR_NULL 0x02000011: Invalid parameter.
* @retval #LOS_OK 0: Cycles are successfully converted to microseconds.
* @par Dependency:
* <ul><li>los_tick.h: the header file that contains the API declaration.</li></ul>
* @see None.
*/
extern UINT32 OsCpuTick2US(CpuTick *cpuTick, UINT32 *usHi, UINT32 *usLo);
* @ingroup los_tick
* @brief Convert cycles to milliseconds.
*
* @par Description:
* This API is used to convert cycles to milliseconds.
* @attention
* <ul>
* <li>None.</li>
* </ul>
*
* @param cycle [IN] Number of cycles.
*
* @retval Number of milliseconds obtained through the conversion. Cycles are successfully converted to milliseconds.
* @par Dependency:
* <ul><li>los_tick.h: the header file that contains the API declaration.</li></ul>
* @see None.
*/
STATIC_INLINE UINT64 OsCycle2MS(UINT64 cycle)
{
return (UINT64)((cycle / (g_sysClock / OS_SYS_MS_PER_SECOND)));
}
* @ingroup los_tick
* @brief Convert cycles to microseconds.
*
* @par Description:
* This API is used to convert cycles to microseconds.
* @attention
* <ul>
* <li>None.</li>
* </ul>
*
* @param cycle [IN] Number of cycles.
*
* @retval Number of microseconds obtained through the conversion. Cycles are successfully converted to microseconds.
* @par Dependency:
* <ul><li>los_tick.h: the header file that contains the API declaration.</li></ul>
* @see None.
*/
STATIC_INLINE UINT64 OsCycle2US(UINT64 cycle)
{
UINT64 tmp = g_sysClock / OS_SYS_US_PER_SECOND;
if (tmp == 0) {
return 0;
}
return (UINT64)(cycle / tmp);
}
#ifdef __cplusplus
#if __cplusplus
}
#endif
#endif
#endif