65 lines
1.3 KiB
C
65 lines
1.3 KiB
C
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#ifndef _MMU_H_
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#define _MMU_H_
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#include "types.h"
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#define MMU_TLB_BUCKET_SIZE 8
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#define MMU_TLB_BUCKET_NUM 32
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#define MMU_DISABLED_TTP 0xFFFFFFFFUL
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typedef Err (*ArmMmuReadF)(void* userData, UInt32* buf, UInt32 pa); //read a word
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#define errMmuTranslation (errMmu + 1)
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#define errMmuDomain (errMmu + 2)
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#define errMmuPermission (errMmu + 3)
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typedef struct {
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UInt32 pa, va;
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UInt32 sz;
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UInt32 ap:2;
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UInt32 domain:4;
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}ArmPrvTlb;
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typedef struct ArmMmu{
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UInt32 transTablPA;
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UInt8 S:1;
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UInt8 R:1;
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UInt8 readPos[MMU_TLB_BUCKET_NUM];
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UInt8 replPos[MMU_TLB_BUCKET_NUM];
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ArmPrvTlb tlb[MMU_TLB_BUCKET_NUM][MMU_TLB_BUCKET_SIZE];
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UInt32 domainCfg;
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ArmMmuReadF readF;
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void* userData;
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}ArmMmu;
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void mmuInit(ArmMmu* mmu, ArmMmuReadF readF, void* userData);
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void muDeinit(ArmMmu* mmu);
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Boolean mmuTranslate(ArmMmu* mmu, UInt32 va, Boolean priviledged, Boolean write, UInt32* paP, UInt8* fsrP);
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UInt32 mmuGetTTP(ArmMmu* mmu);
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void mmuSetTTP(ArmMmu* mmu, UInt32 ttp);
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void mmuSetS(ArmMmu* mmu, Boolean on);
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void mmuSetR(ArmMmu* mmu, Boolean on);
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Boolean mmuGetS(ArmMmu* mmu);
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Boolean mmuGetR(ArmMmu* mmu);
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UInt32 mmuGetDomainCfg(ArmMmu* mmu);
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void mmuSetDomainCfg(ArmMmu* mmu, UInt32 val);
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void mmuTlbFlush(ArmMmu* mmu);
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#endif
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