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/*
* Copyright (c) 2013, 2018-2019 ARM Limited
* All rights reserved
*
* The license below extends only to copyright in the software and shall
* not be construed as granting a license to any other intellectual
* property including but not limited to intellectual property relating
* to a hardware implementation of the functionality of the software
* licensed hereunder. You may use the software subject to the license
* terms below provided that you ensure that this notice is replicated
* unmodified and in its entirety in all distributions of the software,
* modified or unmodified, in source code or in binary form.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Stan Czerniawski
*/
#ifndef __DEV_ARM_SMMU_V3_PTOPS_HH__
#define __DEV_ARM_SMMU_V3_PTOPS_HH__
#include <stdint.h>
#include "base/types.hh"
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;
};
#endif /* __DEV_ARM_SMMU_V3_PTOPS_HH__ */
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