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/*
* Copyright (c) 2006-2025 RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2022-11-09 RT-Thread The first version
*/
#ifndef __CACHE_H__
#define __CACHE_H__
#include <rtdef.h>
/**
* @brief These APIs may not be supported by a specified architecture
* But we have to include to all the cases to be 'general purpose'
*/
rt_always_inline void rt_hw_cpu_dcache_clean_local(void *addr, int size)
{
RT_UNUSED(addr);
RT_UNUSED(size);
}
rt_always_inline void rt_hw_cpu_dcache_invalidate_local(void *addr, int size)
{
RT_UNUSED(addr);
RT_UNUSED(size);
}
rt_always_inline void rt_hw_cpu_dcache_clean_and_invalidate_local(void *addr, int size)
{
RT_UNUSED(addr);
RT_UNUSED(size);
}
rt_always_inline void rt_hw_cpu_dcache_clean_all_local(void)
{
}
rt_always_inline void rt_hw_cpu_dcache_invalidate_all_local(void)
{
}
rt_always_inline void rt_hw_cpu_dcache_clean_and_invalidate_all_local(void)
{
}
/*use fence.i to invalidate all icache*/
rt_always_inline void rt_hw_cpu_icache_invalidate_local(void *addr, int size)
{
__asm__ __volatile__("fence.i" ::: "memory");
}
/*use fence.i to invalidate all icache*/
rt_always_inline void rt_hw_cpu_icache_invalidate_all_local(void)
{
__asm__ __volatile__("fence.i" ::: "memory");
}
/**
* @brief Multi-core
*/
#define rt_hw_cpu_dcache_clean rt_hw_cpu_dcache_clean_local
#define rt_hw_cpu_dcache_invalidate rt_hw_cpu_dcache_invalidate_local
#define rt_hw_cpu_dcache_clean_and_invalidate rt_hw_cpu_dcache_clean_and_invalidate_local
#define rt_hw_cpu_dcache_clean_all rt_hw_cpu_dcache_clean_all_local
#define rt_hw_cpu_dcache_invalidate_all rt_hw_cpu_dcache_invalidate_all_local
#define rt_hw_cpu_dcache_clean_and_invalidate_all rt_hw_cpu_dcache_clean_and_invalidate_all_local
#define rt_hw_cpu_icache_invalidate rt_hw_cpu_icache_invalidate_local
#define rt_hw_cpu_icache_invalidate_all rt_hw_cpu_icache_invalidate_all_local
#define rt_hw_icache_invalidate_all rt_hw_cpu_icache_invalidate_all
/** instruction barrier */
static inline void rt_hw_cpu_sync(void)
{
__asm__ __volatile__("fence.i" ::: "memory");
}
/**
* @brief local cpu icahce & dcache synchronization
*
* @param addr
* @param size
*/
void rt_hw_sync_cache_local(void *addr, int size);
#endif /* __CACHE_H__ */
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