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/* ----------------------------------------------------------------------------
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* Copyright (c) Huawei Technologies Co., Ltd. 2018-2020. All rights reserved.
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* Description: Multi-Core Private HeadFile
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* Author: Huawei LiteOS Team
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* Create: 2018-07-11
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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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* 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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* 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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* 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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* 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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//定义了一些私有接口、数据结构和宏，主要涉及多处理器（MP）相关的功能。
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#ifndef _LOS_MP_PRI_H
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#define _LOS_MP_PRI_H
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#include "los_typedef.h"
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#include "los_toolchain.h"
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#include "los_config.h"
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#include "los_list.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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#define OS_MP_CPU_ALL LOSCFG_KERNEL_CPU_MASK
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#define OS_MP_GC_PERIOD 100 /* ticks */
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typedef enum {
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LOS_MP_IPI_WAKEUP,
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LOS_MP_IPI_SCHEDULE,
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LOS_MP_IPI_HALT,
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#ifdef LOSCFG_KERNEL_SMP_CALL
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LOS_MP_IPI_FUNC_CALL,
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#endif
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} MP_IPI_TYPE;
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typedef VOID (*SMP_FUNC_CALL)(VOID *args);
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#ifdef LOSCFG_KERNEL_SMP
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//定义了一个用于在多处理器系统中切换调度目标的函数。
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extern VOID LOS_MpSchedule(UINT32 target);
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//定义了一个用于处理多处理器唤醒事件的函数。
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extern VOID OsMpWakeHandler(VOID);
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//定义了一个用于处理多处理器调度事件的函数。
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extern VOID OsMpScheduleHandler(VOID);
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//定义了一个用于处理多处理器停机事件的函数。
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extern VOID OsMpHaltHandler(VOID);
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//定义了一个用于初始化多处理器相关功能的函数。
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extern UINT32 OsMpInit(VOID);
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#else
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STATIC INLINE VOID LOS_MpSchedule(UINT32 target)
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{
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(VOID)target;
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}
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#endif
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#ifdef LOSCFG_KERNEL_SMP_CALL
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//用于在目标 CPU 上调用函数
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typedef struct {
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LOS_DL_LIST node;
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SMP_FUNC_CALL func;
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VOID *args;
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} MpCallFunc;
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/**
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* It is used to call function on target cpus by send ipi, and the first param is target cpu mask value.
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*/
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extern VOID OsMpFuncCall(UINT32 target, SMP_FUNC_CALL func, VOID *args);
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extern VOID OsMpFuncCallHandler(VOID);
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#else
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//用于处理多处理器函数调用事件。
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STATIC INLINE VOID OsMpFuncCall(UINT32 target, SMP_FUNC_CALL func, VOID *args)
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{
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(VOID)target;
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if (func != NULL) {
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func(args);
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}
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}
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#endif /* LOSCFG_KERNEL_SMP_CALL */
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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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#endif /* _LOS_MP_PRI_H */
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