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https://github.com/RT-Thread/rt-thread.git
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7450ef6c4d
synchronize virtual memory system works. adding kernel virtual memory management layer for page-based MMU enabled architecture porting libcpu MMU codes porting lwp memory related codes
62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
/*
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* Copyright (c) 2006-2022, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2022-11-28 WangXiaoyao the first version
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*/
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#ifndef __TLB_H__
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#define __TLB_H__
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#include "mm_aspace.h"
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#include "riscv_mmu.h"
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#include "rtdbg.h"
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#include "rtthread.h"
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#include <sbi.h>
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#include <stddef.h>
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#include <stdint.h>
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#define HANDLE_FAULT(ret) \
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if (__builtin_expect((ret) != SBI_SUCCESS, 0)) \
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LOG_W("%s failed", __FUNCTION__);
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static inline void rt_hw_tlb_invalidate_all(void)
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{
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uintptr_t mask = -1ul;
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HANDLE_FAULT(sbi_remote_sfence_vma(&mask, -1ul, 0, mask));
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}
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static inline void rt_hw_tlb_invalidate_all_local(void)
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{
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__asm__ volatile("sfence.vma" ::: "memory");
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}
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static inline void rt_hw_tlb_invalidate_aspace(rt_aspace_t aspace)
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{
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// TODO ASID
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rt_hw_tlb_invalidate_all_local();
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}
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static inline void rt_hw_tlb_invalidate_page(rt_aspace_t aspace, void *start)
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{
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__asm__ volatile("sfence.vma %0, zero" ::"r"(start) : "memory");
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}
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static inline void rt_hw_tlb_invalidate_range(rt_aspace_t aspace, void *start,
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size_t size, size_t stride)
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{
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// huge page is taking as normal page
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if (size <= ARCH_PAGE_SIZE)
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{
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rt_hw_tlb_invalidate_page(aspace, start);
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}
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else
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{
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rt_hw_tlb_invalidate_aspace(aspace);
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}
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}
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#endif /* __TLB_H__ */
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