tlb.hh revision 12140
14120Sgblack@eecs.umich.edu/* 24120Sgblack@eecs.umich.edu * Copyright (c) 2007 The Hewlett-Packard Development Company 34120Sgblack@eecs.umich.edu * All rights reserved. 44120Sgblack@eecs.umich.edu * 57087Snate@binkert.org * The license below extends only to copyright in the software and shall 67087Snate@binkert.org * not be construed as granting a license to any other intellectual 77087Snate@binkert.org * property including but not limited to intellectual property relating 87087Snate@binkert.org * to a hardware implementation of the functionality of the software 97087Snate@binkert.org * licensed hereunder. You may use the software subject to the license 107087Snate@binkert.org * terms below provided that you ensure that this notice is replicated 117087Snate@binkert.org * unmodified and in its entirety in all distributions of the software, 127087Snate@binkert.org * modified or unmodified, in source code or in binary form. 134120Sgblack@eecs.umich.edu * 147087Snate@binkert.org * Redistribution and use in source and binary forms, with or without 157087Snate@binkert.org * modification, are permitted provided that the following conditions are 167087Snate@binkert.org * met: redistributions of source code must retain the above copyright 177087Snate@binkert.org * notice, this list of conditions and the following disclaimer; 187087Snate@binkert.org * redistributions in binary form must reproduce the above copyright 197087Snate@binkert.org * notice, this list of conditions and the following disclaimer in the 207087Snate@binkert.org * documentation and/or other materials provided with the distribution; 217087Snate@binkert.org * neither the name of the copyright holders nor the names of its 224120Sgblack@eecs.umich.edu * contributors may be used to endorse or promote products derived from 237087Snate@binkert.org * this software without specific prior written permission. 244120Sgblack@eecs.umich.edu * 254120Sgblack@eecs.umich.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 264120Sgblack@eecs.umich.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 274120Sgblack@eecs.umich.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 284120Sgblack@eecs.umich.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 294120Sgblack@eecs.umich.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 304120Sgblack@eecs.umich.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 314120Sgblack@eecs.umich.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 324120Sgblack@eecs.umich.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 334120Sgblack@eecs.umich.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 344120Sgblack@eecs.umich.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 354120Sgblack@eecs.umich.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 364120Sgblack@eecs.umich.edu * 374120Sgblack@eecs.umich.edu * Authors: Gabe Black 384120Sgblack@eecs.umich.edu */ 394120Sgblack@eecs.umich.edu 404120Sgblack@eecs.umich.edu#ifndef __ARCH_X86_TLB_HH__ 414120Sgblack@eecs.umich.edu#define __ARCH_X86_TLB_HH__ 424120Sgblack@eecs.umich.edu 435124Sgblack@eecs.umich.edu#include <list> 445237Sgblack@eecs.umich.edu#include <vector> 455124Sgblack@eecs.umich.edu 4610687SAndreas.Sandberg@ARM.com#include "arch/generic/tlb.hh" 475124Sgblack@eecs.umich.edu#include "arch/x86/pagetable.hh" 488953Sgblack@eecs.umich.edu#include "base/trie.hh" 495086Sgblack@eecs.umich.edu#include "mem/request.hh" 506022Sgblack@eecs.umich.edu#include "params/X86TLB.hh" 515086Sgblack@eecs.umich.edu 525086Sgblack@eecs.umich.educlass ThreadContext; 535086Sgblack@eecs.umich.edu 545086Sgblack@eecs.umich.edunamespace X86ISA 555086Sgblack@eecs.umich.edu{ 565245Sgblack@eecs.umich.edu class Walker; 575245Sgblack@eecs.umich.edu 585358Sgblack@eecs.umich.edu class TLB : public BaseTLB 595086Sgblack@eecs.umich.edu { 605124Sgblack@eecs.umich.edu protected: 615895Sgblack@eecs.umich.edu friend class Walker; 625236Sgblack@eecs.umich.edu 635360Sgblack@eecs.umich.edu typedef std::list<TlbEntry *> EntryList; 645360Sgblack@eecs.umich.edu 655357Sgblack@eecs.umich.edu uint32_t configAddress; 665237Sgblack@eecs.umich.edu 675124Sgblack@eecs.umich.edu public: 685245Sgblack@eecs.umich.edu 695124Sgblack@eecs.umich.edu typedef X86TLBParams Params; 705124Sgblack@eecs.umich.edu TLB(const Params *p); 715086Sgblack@eecs.umich.edu 7211175Sandreas.hansson@arm.com void takeOverFrom(BaseTLB *otlb) override {} 7310194SGeoffrey.Blake@arm.com 745124Sgblack@eecs.umich.edu TlbEntry *lookup(Addr va, bool update_lru = true); 755124Sgblack@eecs.umich.edu 765357Sgblack@eecs.umich.edu void setConfigAddress(uint32_t addr); 775357Sgblack@eecs.umich.edu 785360Sgblack@eecs.umich.edu protected: 795360Sgblack@eecs.umich.edu 805360Sgblack@eecs.umich.edu EntryList::iterator lookupIt(Addr va, bool update_lru = true); 815360Sgblack@eecs.umich.edu 828752Sgblack@eecs.umich.edu Walker * walker; 835236Sgblack@eecs.umich.edu 847912Shestness@cs.utexas.edu public: 857912Shestness@cs.utexas.edu Walker *getWalker(); 865236Sgblack@eecs.umich.edu 8711175Sandreas.hansson@arm.com void flushAll() override; 885242Sgblack@eecs.umich.edu 899423SAndreas.Sandberg@arm.com void flushNonGlobal(); 905242Sgblack@eecs.umich.edu 9111175Sandreas.hansson@arm.com void demapPage(Addr va, uint64_t asn) override; 925242Sgblack@eecs.umich.edu 935124Sgblack@eecs.umich.edu protected: 949818Snilay@cs.wisc.edu uint32_t size; 955124Sgblack@eecs.umich.edu 9610905Sandreas.sandberg@arm.com std::vector<TlbEntry> tlb; 975124Sgblack@eecs.umich.edu 985124Sgblack@eecs.umich.edu EntryList freeList; 995124Sgblack@eecs.umich.edu 1008953Sgblack@eecs.umich.edu TlbEntryTrie trie; 1018953Sgblack@eecs.umich.edu uint64_t lruSeq; 1028953Sgblack@eecs.umich.edu 10312140Sswapnilster@gmail.com // Statistics 10412140Sswapnilster@gmail.com Stats::Scalar rdAccesses; 10512140Sswapnilster@gmail.com Stats::Scalar wrAccesses; 10612140Sswapnilster@gmail.com Stats::Scalar rdMisses; 10712140Sswapnilster@gmail.com Stats::Scalar wrMisses; 10812140Sswapnilster@gmail.com 1096141Sgblack@eecs.umich.edu Fault translateInt(RequestPtr req, ThreadContext *tc); 1106141Sgblack@eecs.umich.edu 1115895Sgblack@eecs.umich.edu Fault translate(RequestPtr req, ThreadContext *tc, 1126023Snate@binkert.org Translation *translation, Mode mode, 1135895Sgblack@eecs.umich.edu bool &delayedResponse, bool timing); 1145140Sgblack@eecs.umich.edu 1155124Sgblack@eecs.umich.edu public: 1165245Sgblack@eecs.umich.edu 1178953Sgblack@eecs.umich.edu void evictLRU(); 1188953Sgblack@eecs.umich.edu 1198953Sgblack@eecs.umich.edu uint64_t 1208953Sgblack@eecs.umich.edu nextSeq() 1218953Sgblack@eecs.umich.edu { 1228953Sgblack@eecs.umich.edu return ++lruSeq; 1238953Sgblack@eecs.umich.edu } 1248953Sgblack@eecs.umich.edu 1256023Snate@binkert.org Fault translateAtomic(RequestPtr req, ThreadContext *tc, Mode mode); 1266022Sgblack@eecs.umich.edu void translateTiming(RequestPtr req, ThreadContext *tc, 1276023Snate@binkert.org Translation *translation, Mode mode); 1288888Sgeoffrey.blake@arm.com /** Stub function for compilation support of CheckerCPU. x86 ISA does 1298888Sgeoffrey.blake@arm.com * not support Checker model at the moment 1308888Sgeoffrey.blake@arm.com */ 1318888Sgeoffrey.blake@arm.com Fault translateFunctional(RequestPtr req, ThreadContext *tc, Mode mode); 1325245Sgblack@eecs.umich.edu 1339738Sandreas@sandberg.pp.se /** 1349738Sandreas@sandberg.pp.se * Do post-translation physical address finalization. 1359738Sandreas@sandberg.pp.se * 1369738Sandreas@sandberg.pp.se * Some addresses, for example requests going to the APIC, 1379738Sandreas@sandberg.pp.se * need post-translation updates. Such physical addresses are 1389738Sandreas@sandberg.pp.se * remapped into a "magic" part of the physical address space 1399738Sandreas@sandberg.pp.se * by this method. 1409738Sandreas@sandberg.pp.se * 1419738Sandreas@sandberg.pp.se * @param req Request to updated in-place. 1429738Sandreas@sandberg.pp.se * @param tc Thread context that created the request. 1439738Sandreas@sandberg.pp.se * @param mode Request type (read/write/execute). 1449738Sandreas@sandberg.pp.se * @return A fault on failure, NoFault otherwise. 1459738Sandreas@sandberg.pp.se */ 1469738Sandreas@sandberg.pp.se Fault finalizePhysical(RequestPtr req, ThreadContext *tc, 1479738Sandreas@sandberg.pp.se Mode mode) const; 1489738Sandreas@sandberg.pp.se 1496022Sgblack@eecs.umich.edu TlbEntry * insert(Addr vpn, TlbEntry &entry); 1506022Sgblack@eecs.umich.edu 15112140Sswapnilster@gmail.com /* 15212140Sswapnilster@gmail.com * Function to register Stats 15312140Sswapnilster@gmail.com */ 15412140Sswapnilster@gmail.com void regStats(); 15512140Sswapnilster@gmail.com 1565124Sgblack@eecs.umich.edu // Checkpointing 15711168Sandreas.hansson@arm.com void serialize(CheckpointOut &cp) const override; 15811168Sandreas.hansson@arm.com void unserialize(CheckpointIn &cp) override; 1598864Snilay@cs.wisc.edu 1608922Swilliam.wang@arm.com /** 1618922Swilliam.wang@arm.com * Get the table walker master port. This is used for 1628922Swilliam.wang@arm.com * migrating port connections during a CPU takeOverFrom() 1638922Swilliam.wang@arm.com * call. For architectures that do not have a table walker, 1648922Swilliam.wang@arm.com * NULL is returned, hence the use of a pointer rather than a 1658922Swilliam.wang@arm.com * reference. For X86 this method will always return a valid 1668922Swilliam.wang@arm.com * port pointer. 1678922Swilliam.wang@arm.com * 1688922Swilliam.wang@arm.com * @return A pointer to the walker master port 1698922Swilliam.wang@arm.com */ 17011175Sandreas.hansson@arm.com BaseMasterPort *getMasterPort() override; 1715124Sgblack@eecs.umich.edu }; 1725086Sgblack@eecs.umich.edu} 1735086Sgblack@eecs.umich.edu 1744120Sgblack@eecs.umich.edu#endif // __ARCH_X86_TLB_HH__ 175