58 lines
2.2 KiB
C
58 lines
2.2 KiB
C
/*
|
|
* Copyright (c) 2006-2021, RT-Thread Development Team
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
* 2021-01-30 lizhirui first version
|
|
*/
|
|
|
|
#ifndef __MMU_H__
|
|
#define __MMU_H__
|
|
|
|
#include "riscv.h"
|
|
#include "riscv_mmu.h"
|
|
struct mem_desc
|
|
{
|
|
rt_size_t vaddr_start;
|
|
rt_size_t vaddr_end;
|
|
rt_size_t paddr_start;
|
|
rt_size_t attr;
|
|
};
|
|
|
|
#define GET_PF_ID(addr) ((addr) >> PAGE_OFFSET_BIT)
|
|
#define GET_PF_OFFSET(addr) __MASKVALUE(addr,PAGE_OFFSET_MASK)
|
|
#define GET_L1(addr) __PARTBIT(addr,VPN2_SHIFT,VPN2_BIT)
|
|
#define GET_L2(addr) __PARTBIT(addr,VPN1_SHIFT,VPN1_BIT)
|
|
#define GET_L3(addr) __PARTBIT(addr,VPN0_SHIFT,VPN0_BIT)
|
|
#define GET_PPN(pte) (__PARTBIT(pte,PTE_PPN_SHIFT,PHYSICAL_ADDRESS_WIDTH_BITS - PTE_PPN_SHIFT))
|
|
#define GET_PADDR(pte) (GET_PPN(pte) << PAGE_OFFSET_BIT)
|
|
#define VPN_TO_PPN(vaddr,pv_off) (((rt_size_t)(vaddr)) + (pv_off))
|
|
#define PPN_TO_VPN(paddr,pv_off) (((rt_size_t)(paddr)) - (pv_off))
|
|
#define COMBINEVADDR(l1_off,l2_off,l3_off) (((l1_off) << VPN2_SHIFT) | ((l2_off) << VPN1_SHIFT) | ((l3_off) << VPN0_SHIFT))
|
|
#define COMBINEPTE(paddr,attr) ((((paddr) >> PAGE_OFFSET_BIT) << PTE_PPN_SHIFT) | (attr))
|
|
|
|
typedef struct
|
|
{
|
|
size_t *vtable;
|
|
size_t vstart;
|
|
size_t vend;
|
|
size_t pv_off;
|
|
}rt_mmu_info;
|
|
|
|
void *rt_hw_mmu_tbl_get();
|
|
void rt_hw_mmu_switch(void *mmu_table);
|
|
int rt_hw_mmu_map_init(rt_mmu_info *mmu_info,void *v_address,rt_size_t size,rt_size_t *vtable,rt_size_t pv_off);
|
|
void rt_hw_mmu_kernel_map_init(rt_mmu_info *mmu_info,rt_size_t vaddr_start,rt_size_t size);
|
|
void *_rt_hw_mmu_map(rt_mmu_info *mmu_info,void *v_addr,void *p_addr,rt_size_t size,rt_size_t attr);
|
|
void *_rt_hw_mmu_map_auto(rt_mmu_info *mmu_info,void *v_addr,rt_size_t size,rt_size_t attr);
|
|
void _rt_hw_mmu_unmap(rt_mmu_info *mmu_info,void *v_addr,rt_size_t size);
|
|
void *rt_hw_mmu_map(rt_mmu_info *mmu_info,void *v_addr,void *p_addr,rt_size_t size,rt_size_t attr);
|
|
void *rt_hw_mmu_map_auto(rt_mmu_info *mmu_info,void *v_addr,rt_size_t size,rt_size_t attr);
|
|
void rt_hw_mmu_unmap(rt_mmu_info *mmu_info,void *v_addr,rt_size_t size);
|
|
void *_rt_hw_mmu_v2p(rt_mmu_info *mmu_info,void *v_addr);
|
|
void *rt_hw_mmu_v2p(rt_mmu_info *mmu_info,void *v_addr);
|
|
|
|
#endif
|