f635450d7c
背景：
当前Arch下tick timer的实现依赖于弱函数机制，三方适配时出错及限制较大，且tick
timer作为内核必须模块，未模块化，当前散落在tick和调度等模块中，且当前存在arch依赖
内核，内核也依赖arch的情况，为了解决上述问题，将tick timer模块化，通过提供tick
timer框架实现内核依赖Arch而Arch不依赖内核，并且可以减少对外暴漏的接口，使得三方
适配时更加明确需要实现的接口。
方案描述：
1.tick timer结构
在kernel_liteos_m/arch/include/los_timer.h，中定义结构：
typedef struct {
UINT32 freq;
INT32 irqNum;
UINT32 (*init)(HWI_PROC_FUNC tickHandler);
UINT64 (*getCycle)(UINT32 *period);
VOID (*reload)(UINT64 time);
VOID (*lock)(VOID);
VOID (*unlock)(VOID);
HWI_PROC_FUNC tickHandler;
} ArchTickTimer;
并声明对外获取tick timer的接口：
ArchTickTimer *ArchSysTickTimerGet(VOID)
define LOS_SysTickTimerGet ArchSysTickTimerGet
2.在每个架构下提供默认的tick timer操作：
STATIC ArchTickTimer g_archTickTimer = {
.freq = xxx, 必填
.irqNum = xxx, 必填
.init = xxx, 必填
.getCycle = xxx, 必填
.reload = xxx, 必填
.lock = xxx, 必填
.unlock = xxx, 必填
.tickHandler = NULL, 可选
}
并实现：ArchTickTimer *ArchSysTickTimerGet(VOID) 接口
3.内核los_tick.c中提供对外(其它模块)和公共的tick timer初始化操作函数，
如果用户不想启用系统默认的tick timer,则需要在 "内核初始化之前" 调用接口：
LOS_TickTimerRegister(const ArchTickTimer *timer, const HWI_PROC_FUNC tickHandler)
将用户自己的tick timer或中断处理函数 注册进去。
用户也可以注册自己的中断处理函数(用户不提供，默认使用系统提供的)。
BREAKING CHANGE:
原来版本中每个架构下提供的tick timer相关操作函数为弱函数：
WEAK UINT32 HalTickStart(OS_TICK_HANDLER handler);
WEAK VOID HalSysTickReload(UINT64 nextResponseTime);
WEAK UINT64 HalGetTickCycle(UINT32 *period);
WEAK VOID HalTickLock(VOID);
WEAK VOID HalTickUnlock(VOID);
用户如果需要启用自己的tick timer需要自己实现相关接口(强属性)，在 "内核初始化之前" 通过调用：
LOS_TickTimerRegister 接口替换系统默认提供的tick timer相关接口。
无论用户提供的tick timer 还是系统默认提供的，均在内核初始化时启动。
Close #I4N7XV:arch 重构
Signed-off-by: zhushengle <zhushengle@huawei.com>
Change-Id: I83ad0bdf303904f0e73f808b57b60183619fddcd
530 lines
14 KiB
C
530 lines
14 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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/**
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* @defgroup los_tick
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* @ingroup kernel
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*/
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#ifndef _LOS_TICK_H
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#define _LOS_TICK_H
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#include "los_error.h"
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#include "los_timer.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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/**
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* @ingroup los_tick
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* Tick error code: The Tick configuration is incorrect.
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*
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* Value: 0x02000400
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*
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* Solution: Change values of the OS_SYS_CLOCK and LOSCFG_BASE_CORE_TICK_PER_SECOND
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* system time configuration modules in Los_config.h.
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*/
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#define LOS_ERRNO_TICK_CFG_INVALID LOS_ERRNO_OS_ERROR(LOS_MOD_TICK, 0x00)
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/**
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* @ingroup los_tick
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* Tick error code: The system tick timer uninitialized.
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*
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* Value: 0x02000401
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*
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* Solution: None.
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*/
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#define LOS_ERRNO_TICK_NO_HWTIMER LOS_ERRNO_OS_ERROR(LOS_MOD_TICK, 0x01)
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/**
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* @ingroup los_tick
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* Tick error code: The number of Ticks is too small.
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*
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* Value: 0x02000402
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*
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* Solution: Change values of the OS_SYS_CLOCK and LOSCFG_BASE_CORE_TICK_PER_SECOND
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* system time configuration modules according to the SysTick_Config function.
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*/
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#define LOS_ERRNO_TICK_PER_SEC_TOO_SMALL LOS_ERRNO_OS_ERROR(LOS_MOD_TICK, 0x02)
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/**
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* @ingroup los_tick
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* @brief: System timer cycles get function.
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*
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* @par Description:
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* This API is used to get system timer cycles.
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*
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* @attention:
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* <ul><li>None.</li></ul>
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*
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* @param: None.
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*
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* @retval: current system cycles.
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*
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* @par Dependency:
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* <ul><li>los_tick.h: the header file that contains the API declaration.</li></ul>
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* @see None.
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*
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* */
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extern UINT64 LOS_SysCycleGet(VOID);
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/**
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* @ingroup los_tick
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* Number of milliseconds in one second.
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*/
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#define OS_SYS_MS_PER_SECOND 1000
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/**
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* @ingroup los_tick
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* Number of microseconds in one second.
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*/
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#define OS_SYS_US_PER_SECOND 1000000
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#define OS_SYS_NS_PER_SECOND 1000000000
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#define OS_SYS_NS_PER_US 1000
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#define OS_CYCLE_PER_TICK (OS_SYS_CLOCK / LOSCFG_BASE_CORE_TICK_PER_SECOND)
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#define OS_NS_PER_CYCLE (OS_SYS_NS_PER_SECOND / OS_SYS_CLOCK)
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#define OS_MS_PER_TICK (OS_SYS_MS_PER_SECOND / LOSCFG_BASE_CORE_TICK_PER_SECOND)
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#define OS_US_PER_TICK (OS_SYS_US_PER_SECOND / LOSCFG_BASE_CORE_TICK_PER_SECOND)
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#define OS_NS_PER_TICK (OS_SYS_NS_PER_SECOND / LOSCFG_BASE_CORE_TICK_PER_SECOND)
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#define OS_SYS_CYCLE_TO_NS(cycle, freq) (((cycle) / (freq)) * OS_SYS_NS_PER_SECOND + \
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((cycle) % OS_SYS_CLOCK) * OS_SYS_NS_PER_SECOND / (freq))
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#define OS_SYS_NS_TO_CYCLE(time, freq) (((time) / OS_SYS_NS_PER_SECOND) * (freq) + \
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((time) % OS_SYS_NS_PER_SECOND) * (freq) / OS_SYS_NS_PER_SECOND)
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/**
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* @ingroup los_tick
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* System time basic function error code: Null pointer.
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*
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* Value: 0x02000010
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*
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* Solution: Check whether the input parameter is null.
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*/
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#define LOS_ERRNO_SYS_PTR_NULL LOS_ERRNO_OS_ERROR(LOS_MOD_SYS, 0x10)
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/**
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* @ingroup los_tick
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* System time basic function error code: Invalid system clock configuration.
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*
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* Value: 0x02000011
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*
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* Solution: Configure a valid system clock in los_config.h.
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*/
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#define LOS_ERRNO_SYS_CLOCK_INVALID LOS_ERRNO_OS_ERROR(LOS_MOD_SYS, 0x11)
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/**
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* @ingroup los_tick
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* System time basic function error code: This error code is not in use temporarily.
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*
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* Value: 0x02000012
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*
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* Solution: None.
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*/
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#define LOS_ERRNO_SYS_MAXNUMOFCORES_IS_INVALID LOS_ERRNO_OS_ERROR(LOS_MOD_SYS, 0x12)
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/**
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* @ingroup los_tick
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* System time error code: This error code is not in use temporarily.
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*
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* Value: 0x02000013
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*
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* Solution: None.
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*/
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#define LOS_ERRNO_SYS_PERIERRCOREID_IS_INVALID LOS_ERRNO_OS_ERROR(LOS_MOD_SYS, 0x13)
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/**
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* @ingroup los_tick
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* System time error code: This error code is not in use temporarily.
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*
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* Value: 0x02000014
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*
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* Solution: None.
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*/
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#define LOS_ERRNO_SYS_HOOK_IS_FULL LOS_ERRNO_OS_ERROR(LOS_MOD_SYS, 0x14)
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/**
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* @ingroup los_tick
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* System time error code: The Tick Timer must be registered before kernel initialization.
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*
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* Value: 0x02000015
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*
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* Solution: None.
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*/
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#define LOS_ERRNO_SYS_TIMER_IS_RUNNING LOS_ERRNO_OS_ERROR(LOS_MOD_SYS, 0x15)
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/**
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* @ingroup los_tick
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* System time error code: The tick timer method is NULL.
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*
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* Value: 0x02000016
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*
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* Solution: None.
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*/
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#define LOS_ERRNO_SYS_HOOK_IS_NULL LOS_ERRNO_OS_ERROR(LOS_MOD_SYS, 0x16)
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/**
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* @ingroup los_tick
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* System time error code: The tick timer addr fault.
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*
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* Value: 0x02000017
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*
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* Solution: None.
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*/
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#define LOS_ERRNO_SYS_TIMER_ADDR_FAULT LOS_ERRNO_OS_ERROR(LOS_MOD_SYS, 0x16)
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/**
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* @ingroup los_tick
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* system time structure.
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*/
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typedef struct TagSysTime {
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UINT16 uwYear; /**< value 1970 ~ 2038 or 1970 ~ 2100 */
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UINT8 ucMonth; /**< value 1 - 12 */
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UINT8 ucDay; /**< value 1 - 31 */
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UINT8 ucHour; /**< value 0 - 23 */
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UINT8 ucMinute; /**< value 0 - 59 */
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UINT8 ucSecond; /**< value 0 - 59 */
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UINT8 ucWeek; /**< value 0 - 6 */
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} SYS_TIME_S;
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VOID OsTickTimerReload(UINT64 responseTime);
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#if (LOSCFG_BASE_CORE_TICK_WTIMER == 0)
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VOID OsTickTimerBaseReset(UINT64 currTime);
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#endif
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UINT32 OsTickTimerInit(VOID);
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/**
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* @ingroup los_tick
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* @brief Obtain the number of Ticks.
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*
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* @par Description:
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* This API is used to obtain the number of Ticks.
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* @attention
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* <ul>
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* <li>None</li>
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* </ul>
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*
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* @param None
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*
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* @retval UINT64 The number of Ticks.
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* @par Dependency:
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* <ul><li>los_tick.h: the header file that contains the API declaration.</li></ul>
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* @see None
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*/
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extern UINT64 LOS_TickCountGet(VOID);
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/**
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* @ingroup los_tick
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* @brief Obtain the number of cycles in one second.
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*
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* @par Description:
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* This API is used to obtain the number of cycles in one second.
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* @attention
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* <ul>
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* <li>None</li>
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* </ul>
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*
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* @param None
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*
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* @retval UINT32 Number of cycles obtained in one second.
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* @par Dependency:
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* <ul><li>los_tick.h: the header file that contains the API declaration.</li></ul>
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* @see None
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*/
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extern UINT32 LOS_CyclePerTickGet(VOID);
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/**
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* @ingroup los_tick
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* @brief Convert Ticks to milliseconds.
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*
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* @par Description:
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* This API is used to convert Ticks to milliseconds.
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* @attention
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* <ul>
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* <li>The number of milliseconds obtained through the conversion is 32-bit.</li>
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* </ul>
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*
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* @param ticks [IN] Number of Ticks. The value range is (0,OS_SYS_CLOCK).
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*
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* @retval UINT32 Number of milliseconds obtained through the conversion. Ticks are successfully converted to
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* milliseconds.
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* @par Dependency:
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* <ul><li>los_tick.h: the header file that contains the API declaration.</li></ul>
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* @see LOS_MS2Tick
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*/
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extern UINT32 LOS_Tick2MS(UINT32 ticks);
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/**
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* @ingroup los_tick
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* @brief Convert milliseconds to Ticks.
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*
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* @par Description:
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* This API is used to convert milliseconds to Ticks.
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* @attention
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* <ul>
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* <li>If the parameter passed in is equal to 0xFFFFFFFF, the retval is 0xFFFFFFFF. Pay attention to the value to be
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* converted because data possibly overflows.</li>
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* </ul>
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*
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* @param millisec [IN] Number of milliseconds.
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*
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* @retval UINT32 Number of Ticks obtained through the conversion.
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* @par Dependency:
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* <ul><li>los_tick.h: the header file that contains the API declaration.</li></ul>
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* @see LOS_Tick2MS
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*/
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extern UINT32 LOS_MS2Tick(UINT32 millisec);
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/**
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* @ingroup los_tick
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* @brief Re-initializes the system tick timer.
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*
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* @par Description:
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* This API is used to re-initialize the system Tick timer.
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* @attention
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*
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* @param timer [IN] Specify the tick timer.
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* @param tickHandler [IN] Tick Interrupts the execution of the hook function.
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*
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* @retval LOS_OK or Error code.
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* @par Dependency:
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* <ul><li>los_tick.h: the header file that contains the API declaration.</li></ul>
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* @see
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*/
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extern UINT32 LOS_TickTimerRegister(const ArchTickTimer *timer, const HWI_PROC_FUNC tickHandler);
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/**
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* @ingroup los_tick
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* Ticks per second
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*/
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extern UINT32 g_ticksPerSec;
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/**
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* @ingroup los_tick
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* Cycles per Second
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*/
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extern UINT32 g_uwCyclePerSec;
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/**
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* @ingroup los_tick
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* Cycles per Tick
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*/
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extern UINT32 g_cyclesPerTick;
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/**
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* @ingroup los_tick
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* System Clock
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*/
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extern UINT32 g_sysClock;
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/**
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* @ingroup los_tick
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* @brief Handle the system tick timeout.
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*
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* @par Description:
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* This API is called when the system tick timeout and triggers the interrupt.
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*
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* @attention
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* <ul>
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* <li>None.</li>
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* </ul>
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*
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* @param none.
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*
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* @retval None.
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* @par Dependency:
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* <ul><li>los_tick.h: the header file that contains the API declaration.</li></ul>
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* @see None.
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*/
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extern VOID OsTickHandler(VOID);
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/**
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* @ingroup los_tick
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* Define the CPU Tick structure.
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*/
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typedef struct TagCpuTick {
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UINT32 cntHi; /* < Upper 32 bits of the tick value */
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UINT32 cntLo; /* < Lower 32 bits of the tick value */
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} CpuTick;
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/**
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* @ingroup los_tick
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* Number of operable bits of a 32-bit operand
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*/
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#define OS_SYS_MV_32_BIT 32
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/**
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* @ingroup los_tick
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* Number of milliseconds in one second.
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*/
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#define OS_SYS_MS_PER_SECOND 1000
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/**
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* @ingroup los_tick
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* Number of microseconds in one second.
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*/
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#define OS_SYS_US_PER_SECOND 1000000
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/**
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* @ingroup los_tick
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* The maximum length of name.
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*/
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#define OS_SYS_APPVER_NAME_MAX 64
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/**
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* @ingroup los_tick
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* The magic word.
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*/
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#define OS_SYS_MAGIC_WORD 0xAAAAAAAA
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/**
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* @ingroup los_tick
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* The initialization value of stack space.
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*/
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#define OS_SYS_EMPTY_STACK 0xCACACACA
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/**
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* @ingroup los_tick
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* @brief Convert cycles to milliseconds.
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*
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* @par Description:
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* This API is used to convert cycles to milliseconds.
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* @attention
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* <ul>
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* <li>None.</li>
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* </ul>
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*
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* @param cpuTick [IN] Number of CPU cycles.
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* @param msHi [OUT] Upper 32 bits of the number of milliseconds.
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* @param msLo [OUT] Lower 32 bits of the number of milliseconds.
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*
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* @retval #LOS_ERRNO_SYS_PTR_NULL 0x02000011: Invalid parameter.
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* @retval #LOS_OK 0: Cycles are successfully converted to microseconds.
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* @par Dependency:
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* <ul><li>los_tick.h: the header file that contains the API declaration.</li></ul>
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* @see None.
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*/
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extern UINT32 OsCpuTick2MS(CpuTick *cpuTick, UINT32 *msHi, UINT32 *msLo);
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/**
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* @ingroup los_tick
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* @brief Convert cycles to microseconds.
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*
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* @par Description:
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* This API is used to convert cycles to microseconds.
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* @attention
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* <ul>
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* <li>None.</li>
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* </ul>
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*
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* @param cpuTick [IN] Number of CPU cycles.
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* @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 /* __cplusplus */
|
|
#endif /* __cplusplus */
|
|
|
|
#endif /* _LOS_TICK_H */
|