pagetable.hh revision 7436:b578349f9371
16019Shines@cs.fsu.edu/* 210037SARM gem5 Developers * Copyright (c) 2010 ARM Limited 37158Sgblack@eecs.umich.edu * All rights reserved 47158Sgblack@eecs.umich.edu * 57158Sgblack@eecs.umich.edu * The license below extends only to copyright in the software and shall 67158Sgblack@eecs.umich.edu * not be construed as granting a license to any other intellectual 77158Sgblack@eecs.umich.edu * property including but not limited to intellectual property relating 87158Sgblack@eecs.umich.edu * to a hardware implementation of the functionality of the software 97158Sgblack@eecs.umich.edu * licensed hereunder. You may use the software subject to the license 107158Sgblack@eecs.umich.edu * terms below provided that you ensure that this notice is replicated 117158Sgblack@eecs.umich.edu * unmodified and in its entirety in all distributions of the software, 127158Sgblack@eecs.umich.edu * modified or unmodified, in source code or in binary form. 137158Sgblack@eecs.umich.edu * 146019Shines@cs.fsu.edu * Copyright (c) 2002-2005 The Regents of The University of Michigan 156019Shines@cs.fsu.edu * All rights reserved. 166019Shines@cs.fsu.edu * 176019Shines@cs.fsu.edu * Redistribution and use in source and binary forms, with or without 186019Shines@cs.fsu.edu * modification, are permitted provided that the following conditions are 196019Shines@cs.fsu.edu * met: redistributions of source code must retain the above copyright 206019Shines@cs.fsu.edu * notice, this list of conditions and the following disclaimer; 216019Shines@cs.fsu.edu * redistributions in binary form must reproduce the above copyright 226019Shines@cs.fsu.edu * notice, this list of conditions and the following disclaimer in the 236019Shines@cs.fsu.edu * documentation and/or other materials provided with the distribution; 246019Shines@cs.fsu.edu * neither the name of the copyright holders nor the names of its 256019Shines@cs.fsu.edu * contributors may be used to endorse or promote products derived from 266019Shines@cs.fsu.edu * this software without specific prior written permission. 276019Shines@cs.fsu.edu * 286019Shines@cs.fsu.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 296019Shines@cs.fsu.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 306019Shines@cs.fsu.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 316019Shines@cs.fsu.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 326019Shines@cs.fsu.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 336019Shines@cs.fsu.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 346019Shines@cs.fsu.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 356019Shines@cs.fsu.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 366019Shines@cs.fsu.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 376019Shines@cs.fsu.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 386019Shines@cs.fsu.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 396019Shines@cs.fsu.edu * 406019Shines@cs.fsu.edu * Authors: Ali Saidi 416019Shines@cs.fsu.edu */ 426019Shines@cs.fsu.edu 436019Shines@cs.fsu.edu#ifndef __ARCH_ARM_PAGETABLE_H__ 446019Shines@cs.fsu.edu#define __ARCH_ARM_PAGETABLE_H__ 456019Shines@cs.fsu.edu 466019Shines@cs.fsu.edu#include "arch/arm/isa_traits.hh" 476019Shines@cs.fsu.edu#include "arch/arm/utility.hh" 486019Shines@cs.fsu.edu#include "arch/arm/vtophys.hh" 496214Snate@binkert.org#include "config/full_system.hh" 508542Sgblack@eecs.umich.edu 516019Shines@cs.fsu.edunamespace ArmISA { 527811Ssteve.reinhardt@amd.com 536019Shines@cs.fsu.edustruct VAddr 546019Shines@cs.fsu.edu{ 556019Shines@cs.fsu.edu VAddr(Addr a) { panic("not implemented yet."); } 566019Shines@cs.fsu.edu}; 576019Shines@cs.fsu.edu 586019Shines@cs.fsu.edu 596019Shines@cs.fsu.edu// ITB/DTB page table entry 606019Shines@cs.fsu.edustruct PTE 616019Shines@cs.fsu.edu{ 626019Shines@cs.fsu.edu void serialize(std::ostream &os) 636019Shines@cs.fsu.edu { 646019Shines@cs.fsu.edu panic("Need to implement PTE serialization\n"); 656019Shines@cs.fsu.edu } 666019Shines@cs.fsu.edu 676019Shines@cs.fsu.edu void unserialize(Checkpoint *cp, const std::string §ion) 686019Shines@cs.fsu.edu { 696019Shines@cs.fsu.edu panic("Need to implement PTE serialization\n"); 706019Shines@cs.fsu.edu } 716019Shines@cs.fsu.edu 726019Shines@cs.fsu.edu}; 736019Shines@cs.fsu.edu 746019Shines@cs.fsu.edustruct TlbRange 756019Shines@cs.fsu.edu{ 766019Shines@cs.fsu.edu Addr va; 776019Shines@cs.fsu.edu Addr size; 786019Shines@cs.fsu.edu int contextId; 796019Shines@cs.fsu.edu bool global; 806019Shines@cs.fsu.edu 816019Shines@cs.fsu.edu inline bool 826019Shines@cs.fsu.edu operator<(const TlbRange &r2) const 836019Shines@cs.fsu.edu { 846019Shines@cs.fsu.edu if (!(global || r2.global)) { 856019Shines@cs.fsu.edu if (contextId < r2.contextId) 866019Shines@cs.fsu.edu return true; 876019Shines@cs.fsu.edu else if (contextId > r2.contextId) 886019Shines@cs.fsu.edu return false; 896019Shines@cs.fsu.edu } 906019Shines@cs.fsu.edu 916019Shines@cs.fsu.edu if (va < r2.va) 926019Shines@cs.fsu.edu return true; 936019Shines@cs.fsu.edu return false; 946019Shines@cs.fsu.edu } 956019Shines@cs.fsu.edu 966019Shines@cs.fsu.edu inline bool 976019Shines@cs.fsu.edu operator==(const TlbRange &r2) const 9810037SARM gem5 Developers { 9910037SARM gem5 Developers return va == r2.va && 10010037SARM gem5 Developers size == r2.size && 1019057SAli.Saidi@ARM.com contextId == r2.contextId && 1029057SAli.Saidi@ARM.com global == r2.global; 1036019Shines@cs.fsu.edu } 1047799Sgblack@eecs.umich.edu}; 1056019Shines@cs.fsu.edu 1066019Shines@cs.fsu.edu 1077400SAli.Saidi@ARM.com// ITB/DTB table entry 1086019Shines@cs.fsu.edustruct TlbEntry 1096019Shines@cs.fsu.edu{ 1106019Shines@cs.fsu.edu public: 1116019Shines@cs.fsu.edu enum MemoryType { 1126019Shines@cs.fsu.edu StronglyOrdered, 1136019Shines@cs.fsu.edu Device, 1146735Sgblack@eecs.umich.edu Normal 1156735Sgblack@eecs.umich.edu }; 1166974Stjones1@inf.ed.ac.uk enum DomainType { 1176974Stjones1@inf.ed.ac.uk DomainNoAccess = 0, 1187654Sminkyu.jeong@arm.com DomainClient, 1197349SAli.Saidi@ARM.com DomainReserved, 1209329Sdam.sunwoo@arm.com DomainManager 1219329Sdam.sunwoo@arm.com }; 1229329Sdam.sunwoo@arm.com 1237400SAli.Saidi@ARM.com // Matching variables 1247400SAli.Saidi@ARM.com Addr pfn; 1257400SAli.Saidi@ARM.com Addr size; // Size of this entry, == Type of TLB Rec 1267400SAli.Saidi@ARM.com Addr vpn; // Virtual Page Number 1277400SAli.Saidi@ARM.com uint32_t asid; // Address Space Identifier 1287400SAli.Saidi@ARM.com uint8_t N; // Number of bits in pagesize 1298518Sgeoffrey.blake@arm.com bool global; 13010037SARM gem5 Developers bool valid; 13110037SARM gem5 Developers 1327400SAli.Saidi@ARM.com // Type of memory 1337400SAli.Saidi@ARM.com bool nonCacheable; // Can we wrap this in mtype? 1347811Ssteve.reinhardt@amd.com bool sNp; // Section descriptor 1356019Shines@cs.fsu.edu 1366019Shines@cs.fsu.edu // Memory Attributes 1376019Shines@cs.fsu.edu MemoryType mtype; 1386019Shines@cs.fsu.edu uint8_t innerAttrs; 139 uint8_t outerAttrs; 140 bool shareable; 141 uint32_t attributes; // Memory attributes formatted for PAR 142 143 144 // Access permissions 145 bool xn; // Execute Never 146 uint8_t ap:3; // Access permissions bits 147 uint8_t domain:4; // Access Domain 148 149 TlbRange range; // For fast TLB searching 150 151 //Construct an entry that maps to physical address addr for SE mode 152 TlbEntry(Addr _asn, Addr _vaddr, Addr _paddr) 153 { 154 pfn = _paddr >> PageShift; 155 size = PageBytes - 1; 156 asid = _asn; 157 global = false; 158 valid = true; 159 160 vpn = _vaddr >> PageShift; 161 162 nonCacheable = sNp = false; 163 164 xn = 0; 165 ap = 0; // ??? 166 domain = DomainClient; //??? 167 } 168 169 TlbEntry() 170 {} 171 172 void 173 updateVaddr(Addr new_vaddr) 174 { 175 vpn = new_vaddr >> PageShift; 176 } 177 178 Addr 179 pageStart() 180 { 181 return pfn << PageShift; 182 } 183 184 bool 185 match(Addr va, uint8_t cid) 186 { 187 Addr v = vpn << N; 188 if (valid && va >= v && va <= v + size && (global || cid == asid)) 189 return true; 190 return false; 191 } 192 193 Addr 194 pAddr(Addr va) 195 { 196 return (pfn << N) | (va & size); 197 } 198 199 void serialize(std::ostream &os) { panic("Need to Implement\n"); } 200 void unserialize(Checkpoint *cp, const std::string §ion) 201 { panic("Need to Implement\n");} 202}; 203 204 205 206}; 207#endif // __ARCH_ARM_PAGETABLE_H__ 208 209