smmu_v3_ptops.hh

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/*
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 * property including but not limited to intellectual property relating
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 * modified or unmodified, in source code or in binary form.
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 * met: redistributions of source code must retain the above copyright
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#ifndef __DEV_ARM_SMMU_V3_PTOPS_HH__
#define __DEV_ARM_SMMU_V3_PTOPS_HH__
 
#include <stdint.h>
 
#include "base/types.hh"
 
namespace gem5
{
 
struct PageTableOps
{
    typedef int64_t pte_t;
 
    virtual bool isValid(pte_t pte, unsigned level) const = 0;
    virtual bool isLeaf(pte_t pte, unsigned level) const = 0;
    virtual bool isWritable(pte_t pte, unsigned level, bool stage2) const = 0;
    virtual Addr nextLevelPointer(pte_t pte, unsigned level) const = 0;
    virtual Addr index(Addr va, unsigned level) const = 0;
    virtual Addr pageMask(pte_t pte, unsigned level) const = 0;
    virtual Addr walkMask(unsigned level) const = 0;
    virtual unsigned firstLevel(uint8_t tsz) const = 0;
    virtual unsigned lastLevel() const = 0;
};
 
struct V7LPageTableOps : public PageTableOps
{
    bool isValid(pte_t pte, unsigned level) const override;
    bool isLeaf(pte_t pte, unsigned level) const override;
    bool isWritable(pte_t pte, unsigned level, bool stage2) const override;
    Addr nextLevelPointer(pte_t pte, unsigned level) const override;
    Addr index(Addr va, unsigned level) const override;
    Addr pageMask(pte_t pte, unsigned level) const override;
    Addr walkMask(unsigned level) const override;
    unsigned firstLevel(uint8_t tsz) const override;
    unsigned lastLevel() const override;
};
 
struct V8PageTableOps4k : public PageTableOps
{
    bool isValid(pte_t pte, unsigned level) const override;
    bool isLeaf(pte_t pte, unsigned level) const override;
    bool isWritable(pte_t pte, unsigned level, bool stage2) const override;
    Addr nextLevelPointer(pte_t pte, unsigned level) const override;
    Addr index(Addr va, unsigned level) const override;
    Addr pageMask(pte_t pte, unsigned level) const override;
    Addr walkMask(unsigned level) const override;
    unsigned firstLevel(uint8_t tsz) const override;
    unsigned lastLevel() const override;
};
 
struct V8PageTableOps16k : public PageTableOps
{
    bool isValid(pte_t pte, unsigned level) const override;
    bool isLeaf(pte_t pte, unsigned level) const override;
    bool isWritable(pte_t pte, unsigned level, bool stage2) const override;
    Addr nextLevelPointer(pte_t pte, unsigned level) const override;
    Addr index(Addr va, unsigned level) const override;
    Addr pageMask(pte_t pte, unsigned level) const override;
    Addr walkMask(unsigned level) const override;
    unsigned firstLevel(uint8_t tsz) const override;
    unsigned lastLevel() const override;
};
 
struct V8PageTableOps64k : public PageTableOps
{
    bool isValid(pte_t pte, unsigned level) const override;
    bool isLeaf(pte_t pte, unsigned level) const override;
    bool isWritable(pte_t pte, unsigned level, bool stage2) const override;
    Addr nextLevelPointer(pte_t pte, unsigned level) const override;
    Addr index(Addr va, unsigned level) const override;
    Addr pageMask(pte_t pte, unsigned level) const override;
    Addr walkMask(unsigned level) const override;
    unsigned firstLevel(uint8_t tsz) const override;
    unsigned lastLevel() const override;
};
 
} // namespace gem5
 
#endif /* __DEV_ARM_SMMU_V3_PTOPS_HH__ */