tlb.hh revision 5242
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 * 54120Sgblack@eecs.umich.edu * Redistribution and use of this software in source and binary forms, 64120Sgblack@eecs.umich.edu * with or without modification, are permitted provided that the 74120Sgblack@eecs.umich.edu * following conditions are met: 84120Sgblack@eecs.umich.edu * 94120Sgblack@eecs.umich.edu * The software must be used only for Non-Commercial Use which means any 104120Sgblack@eecs.umich.edu * use which is NOT directed to receiving any direct monetary 114120Sgblack@eecs.umich.edu * compensation for, or commercial advantage from such use. Illustrative 124120Sgblack@eecs.umich.edu * examples of non-commercial use are academic research, personal study, 134120Sgblack@eecs.umich.edu * teaching, education and corporate research & development. 144120Sgblack@eecs.umich.edu * Illustrative examples of commercial use are distributing products for 154120Sgblack@eecs.umich.edu * commercial advantage and providing services using the software for 164120Sgblack@eecs.umich.edu * commercial advantage. 174120Sgblack@eecs.umich.edu * 184120Sgblack@eecs.umich.edu * If you wish to use this software or functionality therein that may be 194120Sgblack@eecs.umich.edu * covered by patents for commercial use, please contact: 204120Sgblack@eecs.umich.edu * Director of Intellectual Property Licensing 214120Sgblack@eecs.umich.edu * Office of Strategy and Technology 224120Sgblack@eecs.umich.edu * Hewlett-Packard Company 234120Sgblack@eecs.umich.edu * 1501 Page Mill Road 244120Sgblack@eecs.umich.edu * Palo Alto, California 94304 254120Sgblack@eecs.umich.edu * 264120Sgblack@eecs.umich.edu * Redistributions of source code must retain the above copyright notice, 274120Sgblack@eecs.umich.edu * this list of conditions and the following disclaimer. Redistributions 284120Sgblack@eecs.umich.edu * in binary form must reproduce the above copyright notice, this list of 294120Sgblack@eecs.umich.edu * conditions and the following disclaimer in the documentation and/or 304120Sgblack@eecs.umich.edu * other materials provided with the distribution. Neither the name of 314120Sgblack@eecs.umich.edu * the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its 324120Sgblack@eecs.umich.edu * contributors may be used to endorse or promote products derived from 334120Sgblack@eecs.umich.edu * this software without specific prior written permission. No right of 344120Sgblack@eecs.umich.edu * sublicense is granted herewith. Derivatives of the software and 354120Sgblack@eecs.umich.edu * output created using the software may be prepared, but only for 364120Sgblack@eecs.umich.edu * Non-Commercial Uses. Derivatives of the software may be shared with 374120Sgblack@eecs.umich.edu * others provided: (i) the others agree to abide by the list of 384120Sgblack@eecs.umich.edu * conditions herein which includes the Non-Commercial Use restrictions; 394120Sgblack@eecs.umich.edu * and (ii) such Derivatives of the software include the above copyright 404120Sgblack@eecs.umich.edu * notice to acknowledge the contribution from this software where 414120Sgblack@eecs.umich.edu * applicable, this list of conditions and the disclaimer below. 424120Sgblack@eecs.umich.edu * 434120Sgblack@eecs.umich.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 444120Sgblack@eecs.umich.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 454120Sgblack@eecs.umich.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 464120Sgblack@eecs.umich.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 474120Sgblack@eecs.umich.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 484120Sgblack@eecs.umich.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 494120Sgblack@eecs.umich.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 504120Sgblack@eecs.umich.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 514120Sgblack@eecs.umich.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 524120Sgblack@eecs.umich.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 534120Sgblack@eecs.umich.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 544120Sgblack@eecs.umich.edu * 554120Sgblack@eecs.umich.edu * Authors: Gabe Black 564120Sgblack@eecs.umich.edu */ 574120Sgblack@eecs.umich.edu 584120Sgblack@eecs.umich.edu#ifndef __ARCH_X86_TLB_HH__ 594120Sgblack@eecs.umich.edu#define __ARCH_X86_TLB_HH__ 604120Sgblack@eecs.umich.edu 615124Sgblack@eecs.umich.edu#include <list> 625237Sgblack@eecs.umich.edu#include <vector> 635236Sgblack@eecs.umich.edu#include <string> 645124Sgblack@eecs.umich.edu 655124Sgblack@eecs.umich.edu#include "arch/x86/pagetable.hh" 665124Sgblack@eecs.umich.edu#include "arch/x86/segmentregs.hh" 675086Sgblack@eecs.umich.edu#include "config/full_system.hh" 685236Sgblack@eecs.umich.edu#include "mem/mem_object.hh" 695086Sgblack@eecs.umich.edu#include "mem/request.hh" 705086Sgblack@eecs.umich.edu#include "params/X86DTB.hh" 715086Sgblack@eecs.umich.edu#include "params/X86ITB.hh" 725086Sgblack@eecs.umich.edu#include "sim/faults.hh" 735086Sgblack@eecs.umich.edu#include "sim/sim_object.hh" 745086Sgblack@eecs.umich.edu 755086Sgblack@eecs.umich.educlass ThreadContext; 765086Sgblack@eecs.umich.educlass Packet; 775086Sgblack@eecs.umich.edu 785086Sgblack@eecs.umich.edunamespace X86ISA 795086Sgblack@eecs.umich.edu{ 805118Sgblack@eecs.umich.edu static const unsigned StoreCheck = 1 << NUM_SEGMENTREGS; 815118Sgblack@eecs.umich.edu 825236Sgblack@eecs.umich.edu class TLB; 835236Sgblack@eecs.umich.edu 845236Sgblack@eecs.umich.edu class TLB : public MemObject 855086Sgblack@eecs.umich.edu { 865124Sgblack@eecs.umich.edu protected: 875124Sgblack@eecs.umich.edu friend class FakeITLBFault; 885124Sgblack@eecs.umich.edu friend class FakeDTLBFault; 895236Sgblack@eecs.umich.edu 905236Sgblack@eecs.umich.edu System * sys; 915236Sgblack@eecs.umich.edu 925237Sgblack@eecs.umich.edu bool allowNX; 935237Sgblack@eecs.umich.edu 945124Sgblack@eecs.umich.edu public: 955124Sgblack@eecs.umich.edu typedef X86TLBParams Params; 965124Sgblack@eecs.umich.edu TLB(const Params *p); 975086Sgblack@eecs.umich.edu 985124Sgblack@eecs.umich.edu void dumpAll(); 995124Sgblack@eecs.umich.edu 1005124Sgblack@eecs.umich.edu TlbEntry *lookup(Addr va, bool update_lru = true); 1015124Sgblack@eecs.umich.edu 1025236Sgblack@eecs.umich.edu#if FULL_SYSTEM 1035236Sgblack@eecs.umich.edu protected: 1045236Sgblack@eecs.umich.edu class Walker 1055236Sgblack@eecs.umich.edu { 1065236Sgblack@eecs.umich.edu public: 1075236Sgblack@eecs.umich.edu enum State { 1085236Sgblack@eecs.umich.edu Ready, 1095236Sgblack@eecs.umich.edu Waiting, 1105236Sgblack@eecs.umich.edu LongPML4, 1115236Sgblack@eecs.umich.edu LongPDP, 1125236Sgblack@eecs.umich.edu LongPD, 1135236Sgblack@eecs.umich.edu LongPTE, 1145236Sgblack@eecs.umich.edu PAEPDP, 1155236Sgblack@eecs.umich.edu PAEPD, 1165236Sgblack@eecs.umich.edu PAEPTE, 1175236Sgblack@eecs.umich.edu PSEPD, 1185236Sgblack@eecs.umich.edu PD, 1195236Sgblack@eecs.umich.edu PTE 1205236Sgblack@eecs.umich.edu }; 1215236Sgblack@eecs.umich.edu 1225237Sgblack@eecs.umich.edu // Act on the current state and determine what to do next. read 1235237Sgblack@eecs.umich.edu // should be the packet that just came back from a read and write 1245237Sgblack@eecs.umich.edu // should be NULL. When the function returns, read is either NULL 1255237Sgblack@eecs.umich.edu // if the machine is finished, or points to a packet to initiate 1265237Sgblack@eecs.umich.edu // the next read. If any write is required to update an "accessed" 1275237Sgblack@eecs.umich.edu // bit, write will point to a packet to do the write. Otherwise it 1285237Sgblack@eecs.umich.edu // will be NULL. 1295237Sgblack@eecs.umich.edu void doNext(PacketPtr &read, PacketPtr &write); 1305236Sgblack@eecs.umich.edu 1315236Sgblack@eecs.umich.edu // Kick off the state machine. 1325237Sgblack@eecs.umich.edu void start(ThreadContext * _tc, Addr vaddr); 1335236Sgblack@eecs.umich.edu 1345236Sgblack@eecs.umich.edu protected: 1355236Sgblack@eecs.umich.edu friend class TLB; 1365236Sgblack@eecs.umich.edu 1375237Sgblack@eecs.umich.edu /* 1385237Sgblack@eecs.umich.edu * State having to do with sending packets. 1395237Sgblack@eecs.umich.edu */ 1405237Sgblack@eecs.umich.edu PacketPtr read; 1415237Sgblack@eecs.umich.edu std::vector<PacketPtr> writes; 1425237Sgblack@eecs.umich.edu 1435237Sgblack@eecs.umich.edu // How many memory operations are in flight. 1445237Sgblack@eecs.umich.edu unsigned inflight; 1455237Sgblack@eecs.umich.edu 1465237Sgblack@eecs.umich.edu bool retrying; 1475237Sgblack@eecs.umich.edu 1485237Sgblack@eecs.umich.edu /* 1495237Sgblack@eecs.umich.edu * Functions for dealing with packets. 1505237Sgblack@eecs.umich.edu */ 1515237Sgblack@eecs.umich.edu bool recvTiming(PacketPtr pkt); 1525237Sgblack@eecs.umich.edu void recvRetry(); 1535237Sgblack@eecs.umich.edu 1545237Sgblack@eecs.umich.edu void sendPackets(); 1555237Sgblack@eecs.umich.edu 1565237Sgblack@eecs.umich.edu /* 1575237Sgblack@eecs.umich.edu * Port for accessing memory 1585237Sgblack@eecs.umich.edu */ 1595236Sgblack@eecs.umich.edu class WalkerPort : public Port 1605236Sgblack@eecs.umich.edu { 1615236Sgblack@eecs.umich.edu public: 1625236Sgblack@eecs.umich.edu WalkerPort(const std::string &_name, Walker * _walker) : 1635236Sgblack@eecs.umich.edu Port(_name, _walker->tlb), walker(_walker), 1645237Sgblack@eecs.umich.edu snoopRangeSent(false) 1655236Sgblack@eecs.umich.edu {} 1665236Sgblack@eecs.umich.edu 1675236Sgblack@eecs.umich.edu protected: 1685236Sgblack@eecs.umich.edu Walker * walker; 1695236Sgblack@eecs.umich.edu 1705236Sgblack@eecs.umich.edu bool snoopRangeSent; 1715236Sgblack@eecs.umich.edu 1725236Sgblack@eecs.umich.edu bool recvTiming(PacketPtr pkt); 1735236Sgblack@eecs.umich.edu Tick recvAtomic(PacketPtr pkt); 1745236Sgblack@eecs.umich.edu void recvFunctional(PacketPtr pkt); 1755236Sgblack@eecs.umich.edu void recvStatusChange(Status status); 1765236Sgblack@eecs.umich.edu void recvRetry(); 1775236Sgblack@eecs.umich.edu void getDeviceAddressRanges(AddrRangeList &resp, 1785236Sgblack@eecs.umich.edu bool &snoop) 1795236Sgblack@eecs.umich.edu { 1805236Sgblack@eecs.umich.edu resp.clear(); 1815236Sgblack@eecs.umich.edu snoop = true; 1825236Sgblack@eecs.umich.edu } 1835236Sgblack@eecs.umich.edu }; 1845236Sgblack@eecs.umich.edu 1855236Sgblack@eecs.umich.edu friend class WalkerPort; 1865236Sgblack@eecs.umich.edu 1875236Sgblack@eecs.umich.edu WalkerPort port; 1885236Sgblack@eecs.umich.edu 1895237Sgblack@eecs.umich.edu // The TLB we're supposed to load. 1905236Sgblack@eecs.umich.edu TLB * tlb; 1915236Sgblack@eecs.umich.edu 1925237Sgblack@eecs.umich.edu /* 1935237Sgblack@eecs.umich.edu * State machine state. 1945237Sgblack@eecs.umich.edu */ 1955237Sgblack@eecs.umich.edu ThreadContext * tc; 1965236Sgblack@eecs.umich.edu State state; 1975236Sgblack@eecs.umich.edu State nextState; 1985236Sgblack@eecs.umich.edu int size; 1995237Sgblack@eecs.umich.edu bool enableNX; 2005237Sgblack@eecs.umich.edu TlbEntry entry; 2015236Sgblack@eecs.umich.edu 2025236Sgblack@eecs.umich.edu public: 2035236Sgblack@eecs.umich.edu Walker(const std::string &_name, TLB * _tlb) : 2045237Sgblack@eecs.umich.edu read(NULL), inflight(0), retrying(false), 2055236Sgblack@eecs.umich.edu port(_name + "-walker_port", this), 2065237Sgblack@eecs.umich.edu tlb(_tlb), 2075237Sgblack@eecs.umich.edu tc(NULL), state(Ready), nextState(Ready) 2085236Sgblack@eecs.umich.edu { 2095236Sgblack@eecs.umich.edu } 2105236Sgblack@eecs.umich.edu }; 2115236Sgblack@eecs.umich.edu 2125236Sgblack@eecs.umich.edu Walker walker; 2135237Sgblack@eecs.umich.edu 2145236Sgblack@eecs.umich.edu#endif 2155236Sgblack@eecs.umich.edu 2165237Sgblack@eecs.umich.edu Port *getPort(const std::string &if_name, int idx = -1); 2175237Sgblack@eecs.umich.edu 2185242Sgblack@eecs.umich.edu public: 2195242Sgblack@eecs.umich.edu void invalidateAll(); 2205242Sgblack@eecs.umich.edu 2215242Sgblack@eecs.umich.edu void invalidateNonGlobal(); 2225242Sgblack@eecs.umich.edu 2235242Sgblack@eecs.umich.edu void demapPage(Addr va); 2245242Sgblack@eecs.umich.edu 2255124Sgblack@eecs.umich.edu protected: 2265124Sgblack@eecs.umich.edu int size; 2275124Sgblack@eecs.umich.edu 2285124Sgblack@eecs.umich.edu TlbEntry * tlb; 2295124Sgblack@eecs.umich.edu 2305124Sgblack@eecs.umich.edu typedef std::list<TlbEntry *> EntryList; 2315124Sgblack@eecs.umich.edu EntryList freeList; 2325124Sgblack@eecs.umich.edu EntryList entryList; 2335124Sgblack@eecs.umich.edu 2345124Sgblack@eecs.umich.edu void insert(Addr vpn, TlbEntry &entry); 2355124Sgblack@eecs.umich.edu 2365140Sgblack@eecs.umich.edu template<class TlbFault> 2375140Sgblack@eecs.umich.edu Fault translate(RequestPtr &req, ThreadContext *tc, 2385140Sgblack@eecs.umich.edu bool write, bool execute); 2395140Sgblack@eecs.umich.edu 2405124Sgblack@eecs.umich.edu public: 2415124Sgblack@eecs.umich.edu // Checkpointing 2425124Sgblack@eecs.umich.edu virtual void serialize(std::ostream &os); 2435124Sgblack@eecs.umich.edu virtual void unserialize(Checkpoint *cp, const std::string §ion); 2445086Sgblack@eecs.umich.edu }; 2455086Sgblack@eecs.umich.edu 2465124Sgblack@eecs.umich.edu class ITB : public TLB 2475124Sgblack@eecs.umich.edu { 2485124Sgblack@eecs.umich.edu public: 2495124Sgblack@eecs.umich.edu typedef X86ITBParams Params; 2505124Sgblack@eecs.umich.edu ITB(const Params *p) : TLB(p) 2515124Sgblack@eecs.umich.edu { 2525237Sgblack@eecs.umich.edu sys = p->system; 2535237Sgblack@eecs.umich.edu allowNX = false; 2545124Sgblack@eecs.umich.edu } 2555086Sgblack@eecs.umich.edu 2565124Sgblack@eecs.umich.edu Fault translate(RequestPtr &req, ThreadContext *tc); 2575086Sgblack@eecs.umich.edu 2585124Sgblack@eecs.umich.edu friend class DTB; 2595124Sgblack@eecs.umich.edu }; 2605086Sgblack@eecs.umich.edu 2615124Sgblack@eecs.umich.edu class DTB : public TLB 2625086Sgblack@eecs.umich.edu { 2635124Sgblack@eecs.umich.edu public: 2645124Sgblack@eecs.umich.edu typedef X86DTBParams Params; 2655124Sgblack@eecs.umich.edu DTB(const Params *p) : TLB(p) 2665124Sgblack@eecs.umich.edu { 2675237Sgblack@eecs.umich.edu sys = p->system; 2685237Sgblack@eecs.umich.edu allowNX = true; 2695124Sgblack@eecs.umich.edu } 2705124Sgblack@eecs.umich.edu Fault translate(RequestPtr &req, ThreadContext *tc, bool write); 2715086Sgblack@eecs.umich.edu#if FULL_SYSTEM 2725124Sgblack@eecs.umich.edu Tick doMmuRegRead(ThreadContext *tc, Packet *pkt); 2735124Sgblack@eecs.umich.edu Tick doMmuRegWrite(ThreadContext *tc, Packet *pkt); 2745086Sgblack@eecs.umich.edu#endif 2755086Sgblack@eecs.umich.edu 2765124Sgblack@eecs.umich.edu // Checkpointing 2775124Sgblack@eecs.umich.edu virtual void serialize(std::ostream &os); 2785124Sgblack@eecs.umich.edu virtual void unserialize(Checkpoint *cp, const std::string §ion); 2795124Sgblack@eecs.umich.edu }; 2805086Sgblack@eecs.umich.edu} 2815086Sgblack@eecs.umich.edu 2824120Sgblack@eecs.umich.edu#endif // __ARCH_X86_TLB_HH__ 283