smmu_v3_ptops.hh revision 14039:4991b2a345a1
1/* 2 * Copyright (c) 2013, 2018-2019 ARM Limited 3 * All rights reserved 4 * 5 * The license below extends only to copyright in the software and shall 6 * not be construed as granting a license to any other intellectual 7 * property including but not limited to intellectual property relating 8 * to a hardware implementation of the functionality of the software 9 * licensed hereunder. You may use the software subject to the license 10 * terms below provided that you ensure that this notice is replicated 11 * unmodified and in its entirety in all distributions of the software, 12 * modified or unmodified, in source code or in binary form. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions are 16 * met: redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer; 18 * redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution; 21 * neither the name of the copyright holders nor the names of its 22 * contributors may be used to endorse or promote products derived from 23 * this software without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 26 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 27 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 28 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 29 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 30 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 31 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 32 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 35 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 36 * 37 * Authors: Stan Czerniawski 38 */ 39 40#ifndef __DEV_ARM_SMMU_V3_PTOPS_HH__ 41#define __DEV_ARM_SMMU_V3_PTOPS_HH__ 42 43#include <stdint.h> 44 45#include "base/types.hh" 46 47struct PageTableOps 48{ 49 typedef int64_t pte_t; 50 51 virtual bool isValid(pte_t pte, unsigned level) const = 0; 52 virtual bool isLeaf(pte_t pte, unsigned level) const = 0; 53 virtual bool isWritable(pte_t pte, unsigned level, bool stage2) const = 0; 54 virtual Addr nextLevelPointer(pte_t pte, unsigned level) const = 0; 55 virtual Addr index(Addr va, unsigned level) const = 0; 56 virtual Addr pageMask(pte_t pte, unsigned level) const = 0; 57 virtual Addr walkMask(unsigned level) const = 0; 58 virtual unsigned firstLevel() const = 0; 59 virtual unsigned lastLevel() const = 0; 60}; 61 62struct V7LPageTableOps : public PageTableOps 63{ 64 virtual bool isValid(pte_t pte, unsigned level) const; 65 virtual bool isLeaf(pte_t pte, unsigned level) const; 66 virtual bool isWritable(pte_t pte, unsigned level, bool stage2) const; 67 virtual Addr nextLevelPointer(pte_t pte, unsigned level) const; 68 virtual Addr index(Addr va, unsigned level) const; 69 virtual Addr pageMask(pte_t pte, unsigned level) const; 70 virtual Addr walkMask(unsigned level) const; 71 virtual unsigned firstLevel() const; 72 virtual unsigned lastLevel() const; 73}; 74 75struct V8PageTableOps4k : public PageTableOps 76{ 77 virtual bool isValid(pte_t pte, unsigned level) const; 78 virtual bool isLeaf(pte_t pte, unsigned level) const; 79 virtual bool isWritable(pte_t pte, unsigned level, bool stage2) const; 80 virtual Addr nextLevelPointer(pte_t pte, unsigned level) const; 81 virtual Addr index(Addr va, unsigned level) const; 82 virtual Addr pageMask(pte_t pte, unsigned level) const; 83 virtual Addr walkMask(unsigned level) const; 84 virtual unsigned firstLevel() const; 85 virtual unsigned lastLevel() const; 86}; 87 88struct V8PageTableOps64k : public PageTableOps 89{ 90 virtual bool isValid(pte_t pte, unsigned level) const; 91 virtual bool isLeaf(pte_t pte, unsigned level) const; 92 virtual bool isWritable(pte_t pte, unsigned level, bool stage2) const; 93 virtual Addr nextLevelPointer(pte_t pte, unsigned level) const; 94 virtual Addr index(Addr va, unsigned level) const; 95 virtual Addr pageMask(pte_t pte, unsigned level) const; 96 virtual Addr walkMask(unsigned level) const; 97 virtual unsigned firstLevel() const; 98 virtual unsigned lastLevel() const; 99}; 100 101#endif /* __DEV_ARM_SMMU_V3_PTOPS_HH__ */ 102