rt-thread-official/libcpu/mips/gs264/cache.c

71 lines
1.7 KiB
C

/*
* Copyright (c) 2006-2020, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2019-03-29 quanzhao the first version
* 2020-07-26 lizhirui porting to ls2k
*/
#include <rthw.h>
#include <rtdef.h>
rt_inline rt_uint64_t rt_cpu_icache_line_size(void)
{
rt_uint64_t ctr;
return 4 << (ctr & 0xF);
}
rt_inline rt_uint64_t rt_cpu_dcache_line_size(void)
{
rt_uint64_t ctr;
return 4 << ((ctr >> 16) & 0xF);
}
void rt_hw_cpu_icache_invalidate(void *addr, int size)
{
rt_uint64_t line_size = rt_cpu_icache_line_size();
rt_uint64_t start_addr = (rt_uint64_t)addr;
rt_uint64_t end_addr = (rt_uint64_t) addr + size + line_size - 1;
}
void rt_hw_cpu_dcache_invalidate(void *addr, int size)
{
rt_uint64_t line_size = rt_cpu_dcache_line_size();
rt_uint64_t start_addr = (rt_uint64_t)addr;
rt_uint64_t end_addr = (rt_uint64_t) addr + size + line_size - 1;
}
void rt_hw_cpu_dcache_clean(void *addr, int size)
{
rt_uint64_t line_size = rt_cpu_dcache_line_size();
rt_uint64_t start_addr = (rt_uint64_t)addr;
rt_uint64_t end_addr = (rt_uint64_t) addr + size + line_size - 1;
}
void rt_hw_cpu_icache_ops(int ops, void *addr, int size)
{
if (ops == RT_HW_CACHE_INVALIDATE)
rt_hw_cpu_icache_invalidate(addr, size);
}
void rt_hw_cpu_dcache_ops(int ops, void *addr, int size)
{
if (ops == RT_HW_CACHE_FLUSH)
rt_hw_cpu_dcache_clean(addr, size);
else if (ops == RT_HW_CACHE_INVALIDATE)
rt_hw_cpu_dcache_invalidate(addr, size);
}
rt_base_t rt_hw_cpu_icache_status(void)
{
return 0;
}
rt_base_t rt_hw_cpu_dcache_status(void)
{
return 0;
}