tlbi_op.hh

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 *
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 * property including but not limited to intellectual property relating
 * to a hardware implementation of the functionality of the software
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#ifndef __ARCH_ARM_TLBI_HH__
#define __ARCH_ARM_TLBI_HH__
 
#include "arch/arm/system.hh"
#include "arch/arm/tlb.hh"
#include "cpu/thread_context.hh"
 
namespace gem5
{
 
namespace ArmISA {
 
class TLBIOp
{
  public:
    TLBIOp(ExceptionLevel _targetEL, bool _secure)
      : secureLookup(_secure), targetEL(_targetEL)
    {}
 
    virtual ~TLBIOp() {}
    virtual void operator()(ThreadContext* tc) {}
 
    void
    broadcast(ThreadContext *tc)
    {
        for (auto *oc: tc->getSystemPtr()->threads)
            (*this)(oc);
    }
 
    virtual bool
    stage1Flush() const
    {
        return true;
    }
 
    virtual bool
    stage2Flush() const
    {
        return false;
    }
 
    bool secureLookup;
    ExceptionLevel targetEL;
};
 
class TLBIALL : public TLBIOp
{
  public:
    TLBIALL(ExceptionLevel _targetEL, bool _secure)
      : TLBIOp(_targetEL, _secure), inHost(false), el2Enabled(false),
        currentEL(EL0)
    {}
 
    void operator()(ThreadContext* tc) override;
 
    bool
    stage2Flush() const override
    {
        // TLBIALL (AArch32) flushing stage2 entries if we're currently
        // in hyp mode
        return currentEL == EL2;
    }
 
    TLBIALL
    makeStage2() const
    {
        return TLBIALL(EL1, secureLookup);
    }
 
    bool inHost;
    bool el2Enabled;
    ExceptionLevel currentEL;
};
 
class ITLBIALL : public TLBIALL
{
  public:
    ITLBIALL(ExceptionLevel _targetEL, bool _secure)
      : TLBIALL(_targetEL, _secure)
    {}
 
    void broadcast(ThreadContext *tc) = delete;
 
    void operator()(ThreadContext* tc) override;
};
 
class DTLBIALL : public TLBIALL
{
  public:
    DTLBIALL(ExceptionLevel _targetEL, bool _secure)
      : TLBIALL(_targetEL, _secure)
    {}
 
    void broadcast(ThreadContext *tc) = delete;
 
    void operator()(ThreadContext* tc) override;
};
 
class TLBIALLEL : public TLBIOp
{
  public:
    TLBIALLEL(ExceptionLevel _targetEL, bool _secure)
      : TLBIOp(_targetEL, _secure), inHost(false)
    {}
 
    void operator()(ThreadContext* tc) override;
 
    bool
    stage2Flush() const override
    {
        // If we're targeting EL1 then flush stage2 as well
        return targetEL == EL1;
    }
 
    TLBIALLEL
    makeStage2() const
    {
        return TLBIALLEL(EL1, secureLookup);
    }
 
    bool inHost;
};
 
class TLBIVMALL : public TLBIOp
{
  public:
    TLBIVMALL(ExceptionLevel _targetEL, bool _secure, bool _stage2)
      : TLBIOp(_targetEL, _secure), inHost(false), el2Enabled(false),
        stage2(_stage2)
    {}
 
    void operator()(ThreadContext* tc) override;
 
    bool
    stage2Flush() const override
    {
        return stage2;
    }
 
    TLBIVMALL
    makeStage2() const
    {
        return TLBIVMALL(EL1, secureLookup, false);
    }
 
    bool inHost;
    bool el2Enabled;
    bool stage2;
};
 
class TLBIASID : public TLBIOp
{
  public:
    TLBIASID(ExceptionLevel _targetEL, bool _secure, uint16_t _asid)
      : TLBIOp(_targetEL, _secure), asid(_asid), inHost(false),
        el2Enabled(false)
    {}
 
    void operator()(ThreadContext* tc) override;
 
    uint16_t asid;
    bool inHost;
    bool el2Enabled;
};
 
class ITLBIASID : public TLBIASID
{
  public:
    ITLBIASID(ExceptionLevel _targetEL, bool _secure, uint16_t _asid)
      : TLBIASID(_targetEL, _secure, _asid)
    {}
 
    void broadcast(ThreadContext *tc) = delete;
 
    void operator()(ThreadContext* tc) override;
};
 
class DTLBIASID : public TLBIASID
{
  public:
    DTLBIASID(ExceptionLevel _targetEL, bool _secure, uint16_t _asid)
      : TLBIASID(_targetEL, _secure, _asid)
    {}
 
    void broadcast(ThreadContext *tc) = delete;
 
    void operator()(ThreadContext* tc) override;
};
 
class TLBIALLN : public TLBIOp
{
  public:
    TLBIALLN(ExceptionLevel _targetEL)
      : TLBIOp(_targetEL, false)
    {}
 
    void operator()(ThreadContext* tc) override;
 
    bool
    stage2Flush() const override
    {
        return targetEL != EL2;
    }
 
    TLBIALLN
    makeStage2() const
    {
        return TLBIALLN(EL1);
    }
};
 
class TLBIMVAA : public TLBIOp
{
  public:
    TLBIMVAA(ExceptionLevel _targetEL, bool _secure,
             Addr _addr)
      : TLBIOp(_targetEL, _secure), addr(_addr), inHost(false)
    {}
 
    void operator()(ThreadContext* tc) override;
 
    Addr addr;
    bool inHost;
};
 
class TLBIMVA : public TLBIOp
{
  public:
    TLBIMVA(ExceptionLevel _targetEL, bool _secure,
            Addr _addr, uint16_t _asid)
      : TLBIOp(_targetEL, _secure), addr(_addr), asid(_asid),
        inHost(false)
    {}
 
    void operator()(ThreadContext* tc) override;
 
    Addr addr;
    uint16_t asid;
    bool inHost;
};
 
class ITLBIMVA : public TLBIMVA
{
  public:
    ITLBIMVA(ExceptionLevel _targetEL, bool _secure,
             Addr _addr, uint16_t _asid)
      : TLBIMVA(_targetEL, _secure, _addr, _asid)
    {}
 
    void broadcast(ThreadContext *tc) = delete;
 
    void operator()(ThreadContext* tc) override;
};
 
class DTLBIMVA : public TLBIMVA
{
  public:
    DTLBIMVA(ExceptionLevel _targetEL, bool _secure,
             Addr _addr, uint16_t _asid)
      : TLBIMVA(_targetEL, _secure, _addr, _asid)
    {}
 
    void broadcast(ThreadContext *tc) = delete;
 
    void operator()(ThreadContext* tc) override;
};
 
class TLBIIPA : public TLBIOp
{
  public:
    TLBIIPA(ExceptionLevel _targetEL, bool _secure, Addr _addr)
      : TLBIOp(_targetEL, _secure), addr(_addr)
    {}
 
    void operator()(ThreadContext* tc) override;
 
    bool
    stage1Flush() const override
    {
        return false;
    }
 
    TLBIMVAA
    makeStage2() const
    {
        return TLBIMVAA(EL1, secureLookup, addr);
    }
 
    Addr addr;
};
 
} // namespace ArmISA
} // namespace gem5
 
#endif //__ARCH_ARM_TLBI_HH__