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import RT-Thread@9217865c without bsp, libcpu and components/net

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This commit is contained in:
Zihao Yu 2023-05-20 16:23:33 +08:00
commit e2376a3709
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58
components/mm/mm_fault.h Normal file
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/*
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2022-12-06 WangXiaoyao the first version
*/
#ifndef __MM_FAULT_H__
#define __MM_FAULT_H__
#include <rtthread.h>
#include <stddef.h>
#include <stdint.h>
/* fast path fault handler, a page frame on kernel space is returned */
#define MM_FAULT_STATUS_OK 0
/* customized fault handler, done by using rt_varea_map_* */
#define MM_FAULT_STATUS_OK_MAPPED 1
#define MM_FAULT_STATUS_UNRECOVERABLE 4
struct rt_mm_fault_res
{
void *vaddr;
rt_size_t size;
int status;
};
enum rt_mm_fault_op
{
MM_FAULT_OP_READ = 1,
MM_FAULT_OP_WRITE,
MM_FAULT_OP_EXECUTE,
};
enum rt_mm_fault_type
{
MM_FAULT_TYPE_ACCESS_FAULT,
MM_FAULT_TYPE_PAGE_FAULT,
MM_FAULT_TYPE_BUS_ERROR,
MM_FAULT_TYPE_GENERIC,
};
struct rt_aspace_fault_msg
{
enum rt_mm_fault_op fault_op;
enum rt_mm_fault_type fault_type;
rt_size_t off;
void *fault_vaddr;
struct rt_mm_fault_res response;
};
/* MMU base page fault handler, return 1 is */
int rt_aspace_fault_try_fix(struct rt_aspace_fault_msg *msg);
#endif /* __MM_FAULT_H__ */