timing.cc revision 5894
12623SN/A/* 22623SN/A * Copyright (c) 2002-2005 The Regents of The University of Michigan 32623SN/A * All rights reserved. 42623SN/A * 52623SN/A * Redistribution and use in source and binary forms, with or without 62623SN/A * modification, are permitted provided that the following conditions are 72623SN/A * met: redistributions of source code must retain the above copyright 82623SN/A * notice, this list of conditions and the following disclaimer; 92623SN/A * redistributions in binary form must reproduce the above copyright 102623SN/A * notice, this list of conditions and the following disclaimer in the 112623SN/A * documentation and/or other materials provided with the distribution; 122623SN/A * neither the name of the copyright holders nor the names of its 132623SN/A * contributors may be used to endorse or promote products derived from 142623SN/A * this software without specific prior written permission. 152623SN/A * 162623SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 172623SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 182623SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 192623SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 202623SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 212623SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 222623SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 232623SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 242623SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 252623SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 262623SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 272665Ssaidi@eecs.umich.edu * 282665Ssaidi@eecs.umich.edu * Authors: Steve Reinhardt 292623SN/A */ 302623SN/A 313170Sstever@eecs.umich.edu#include "arch/locked_mem.hh" 325103Ssaidi@eecs.umich.edu#include "arch/mmaped_ipr.hh" 332623SN/A#include "arch/utility.hh" 344040Ssaidi@eecs.umich.edu#include "base/bigint.hh" 352623SN/A#include "cpu/exetrace.hh" 362623SN/A#include "cpu/simple/timing.hh" 373348Sbinkertn@umich.edu#include "mem/packet.hh" 383348Sbinkertn@umich.edu#include "mem/packet_access.hh" 394762Snate@binkert.org#include "params/TimingSimpleCPU.hh" 402901Ssaidi@eecs.umich.edu#include "sim/system.hh" 412623SN/A 422623SN/Ausing namespace std; 432623SN/Ausing namespace TheISA; 442623SN/A 452856Srdreslin@umich.eduPort * 462856Srdreslin@umich.eduTimingSimpleCPU::getPort(const std::string &if_name, int idx) 472856Srdreslin@umich.edu{ 482856Srdreslin@umich.edu if (if_name == "dcache_port") 492856Srdreslin@umich.edu return &dcachePort; 502856Srdreslin@umich.edu else if (if_name == "icache_port") 512856Srdreslin@umich.edu return &icachePort; 522856Srdreslin@umich.edu else 532856Srdreslin@umich.edu panic("No Such Port\n"); 542856Srdreslin@umich.edu} 552623SN/A 562623SN/Avoid 572623SN/ATimingSimpleCPU::init() 582623SN/A{ 592623SN/A BaseCPU::init(); 602623SN/A#if FULL_SYSTEM 612680Sktlim@umich.edu for (int i = 0; i < threadContexts.size(); ++i) { 622680Sktlim@umich.edu ThreadContext *tc = threadContexts[i]; 632623SN/A 642623SN/A // initialize CPU, including PC 655712Shsul@eecs.umich.edu TheISA::initCPU(tc, _cpuId); 662623SN/A } 672623SN/A#endif 682623SN/A} 692623SN/A 702623SN/ATick 713349Sbinkertn@umich.eduTimingSimpleCPU::CpuPort::recvAtomic(PacketPtr pkt) 722623SN/A{ 732623SN/A panic("TimingSimpleCPU doesn't expect recvAtomic callback!"); 742623SN/A return curTick; 752623SN/A} 762623SN/A 772623SN/Avoid 783349Sbinkertn@umich.eduTimingSimpleCPU::CpuPort::recvFunctional(PacketPtr pkt) 792623SN/A{ 803184Srdreslin@umich.edu //No internal storage to update, jusst return 813184Srdreslin@umich.edu return; 822623SN/A} 832623SN/A 842623SN/Avoid 852623SN/ATimingSimpleCPU::CpuPort::recvStatusChange(Status status) 862623SN/A{ 873647Srdreslin@umich.edu if (status == RangeChange) { 883647Srdreslin@umich.edu if (!snoopRangeSent) { 893647Srdreslin@umich.edu snoopRangeSent = true; 903647Srdreslin@umich.edu sendStatusChange(Port::RangeChange); 913647Srdreslin@umich.edu } 922631SN/A return; 933647Srdreslin@umich.edu } 942631SN/A 952623SN/A panic("TimingSimpleCPU doesn't expect recvStatusChange callback!"); 962623SN/A} 972623SN/A 982948Ssaidi@eecs.umich.edu 992948Ssaidi@eecs.umich.eduvoid 1003349Sbinkertn@umich.eduTimingSimpleCPU::CpuPort::TickEvent::schedule(PacketPtr _pkt, Tick t) 1012948Ssaidi@eecs.umich.edu{ 1022948Ssaidi@eecs.umich.edu pkt = _pkt; 1035606Snate@binkert.org cpu->schedule(this, t); 1042948Ssaidi@eecs.umich.edu} 1052948Ssaidi@eecs.umich.edu 1065529Snate@binkert.orgTimingSimpleCPU::TimingSimpleCPU(TimingSimpleCPUParams *p) 1075894Sgblack@eecs.umich.edu : BaseSimpleCPU(p), fetchTranslation(this), icachePort(this, p->clock), 1085894Sgblack@eecs.umich.edu dcachePort(this, p->clock), fetchEvent(this) 1092623SN/A{ 1102623SN/A _status = Idle; 1113647Srdreslin@umich.edu 1123647Srdreslin@umich.edu icachePort.snoopRangeSent = false; 1133647Srdreslin@umich.edu dcachePort.snoopRangeSent = false; 1143647Srdreslin@umich.edu 1152623SN/A ifetch_pkt = dcache_pkt = NULL; 1162839Sktlim@umich.edu drainEvent = NULL; 1173222Sktlim@umich.edu previousTick = 0; 1182901Ssaidi@eecs.umich.edu changeState(SimObject::Running); 1192623SN/A} 1202623SN/A 1212623SN/A 1222623SN/ATimingSimpleCPU::~TimingSimpleCPU() 1232623SN/A{ 1242623SN/A} 1252623SN/A 1262623SN/Avoid 1272623SN/ATimingSimpleCPU::serialize(ostream &os) 1282623SN/A{ 1292915Sktlim@umich.edu SimObject::State so_state = SimObject::getState(); 1302915Sktlim@umich.edu SERIALIZE_ENUM(so_state); 1312623SN/A BaseSimpleCPU::serialize(os); 1322623SN/A} 1332623SN/A 1342623SN/Avoid 1352623SN/ATimingSimpleCPU::unserialize(Checkpoint *cp, const string §ion) 1362623SN/A{ 1372915Sktlim@umich.edu SimObject::State so_state; 1382915Sktlim@umich.edu UNSERIALIZE_ENUM(so_state); 1392623SN/A BaseSimpleCPU::unserialize(cp, section); 1402798Sktlim@umich.edu} 1412798Sktlim@umich.edu 1422901Ssaidi@eecs.umich.eduunsigned int 1432839Sktlim@umich.eduTimingSimpleCPU::drain(Event *drain_event) 1442798Sktlim@umich.edu{ 1452839Sktlim@umich.edu // TimingSimpleCPU is ready to drain if it's not waiting for 1462798Sktlim@umich.edu // an access to complete. 1475496Ssaidi@eecs.umich.edu if (_status == Idle || _status == Running || _status == SwitchedOut) { 1482901Ssaidi@eecs.umich.edu changeState(SimObject::Drained); 1492901Ssaidi@eecs.umich.edu return 0; 1502798Sktlim@umich.edu } else { 1512839Sktlim@umich.edu changeState(SimObject::Draining); 1522839Sktlim@umich.edu drainEvent = drain_event; 1532901Ssaidi@eecs.umich.edu return 1; 1542798Sktlim@umich.edu } 1552623SN/A} 1562623SN/A 1572623SN/Avoid 1582798Sktlim@umich.eduTimingSimpleCPU::resume() 1592623SN/A{ 1605221Ssaidi@eecs.umich.edu DPRINTF(SimpleCPU, "Resume\n"); 1612798Sktlim@umich.edu if (_status != SwitchedOut && _status != Idle) { 1624762Snate@binkert.org assert(system->getMemoryMode() == Enums::timing); 1633201Shsul@eecs.umich.edu 1645710Scws3k@cs.virginia.edu if (fetchEvent.scheduled()) 1655710Scws3k@cs.virginia.edu deschedule(fetchEvent); 1662915Sktlim@umich.edu 1675710Scws3k@cs.virginia.edu schedule(fetchEvent, nextCycle()); 1682623SN/A } 1692798Sktlim@umich.edu 1702901Ssaidi@eecs.umich.edu changeState(SimObject::Running); 1712798Sktlim@umich.edu} 1722798Sktlim@umich.edu 1732798Sktlim@umich.eduvoid 1742798Sktlim@umich.eduTimingSimpleCPU::switchOut() 1752798Sktlim@umich.edu{ 1765496Ssaidi@eecs.umich.edu assert(_status == Running || _status == Idle); 1772798Sktlim@umich.edu _status = SwitchedOut; 1785099Ssaidi@eecs.umich.edu numCycles += tickToCycles(curTick - previousTick); 1792867Sktlim@umich.edu 1802867Sktlim@umich.edu // If we've been scheduled to resume but are then told to switch out, 1812867Sktlim@umich.edu // we'll need to cancel it. 1825710Scws3k@cs.virginia.edu if (fetchEvent.scheduled()) 1835606Snate@binkert.org deschedule(fetchEvent); 1842623SN/A} 1852623SN/A 1862623SN/A 1872623SN/Avoid 1882623SN/ATimingSimpleCPU::takeOverFrom(BaseCPU *oldCPU) 1892623SN/A{ 1904192Sktlim@umich.edu BaseCPU::takeOverFrom(oldCPU, &icachePort, &dcachePort); 1912623SN/A 1922680Sktlim@umich.edu // if any of this CPU's ThreadContexts are active, mark the CPU as 1932623SN/A // running and schedule its tick event. 1942680Sktlim@umich.edu for (int i = 0; i < threadContexts.size(); ++i) { 1952680Sktlim@umich.edu ThreadContext *tc = threadContexts[i]; 1962680Sktlim@umich.edu if (tc->status() == ThreadContext::Active && _status != Running) { 1972623SN/A _status = Running; 1982623SN/A break; 1992623SN/A } 2002623SN/A } 2013201Shsul@eecs.umich.edu 2023201Shsul@eecs.umich.edu if (_status != Running) { 2033201Shsul@eecs.umich.edu _status = Idle; 2043201Shsul@eecs.umich.edu } 2055169Ssaidi@eecs.umich.edu assert(threadContexts.size() == 1); 2065101Ssaidi@eecs.umich.edu previousTick = curTick; 2072623SN/A} 2082623SN/A 2092623SN/A 2102623SN/Avoid 2112623SN/ATimingSimpleCPU::activateContext(int thread_num, int delay) 2122623SN/A{ 2135221Ssaidi@eecs.umich.edu DPRINTF(SimpleCPU, "ActivateContext %d (%d cycles)\n", thread_num, delay); 2145221Ssaidi@eecs.umich.edu 2152623SN/A assert(thread_num == 0); 2162683Sktlim@umich.edu assert(thread); 2172623SN/A 2182623SN/A assert(_status == Idle); 2192623SN/A 2202623SN/A notIdleFraction++; 2212623SN/A _status = Running; 2223686Sktlim@umich.edu 2232623SN/A // kick things off by initiating the fetch of the next instruction 2245606Snate@binkert.org schedule(fetchEvent, nextCycle(curTick + ticks(delay))); 2252623SN/A} 2262623SN/A 2272623SN/A 2282623SN/Avoid 2292623SN/ATimingSimpleCPU::suspendContext(int thread_num) 2302623SN/A{ 2315221Ssaidi@eecs.umich.edu DPRINTF(SimpleCPU, "SuspendContext %d\n", thread_num); 2325221Ssaidi@eecs.umich.edu 2332623SN/A assert(thread_num == 0); 2342683Sktlim@umich.edu assert(thread); 2352623SN/A 2362644Sstever@eecs.umich.edu assert(_status == Running); 2372623SN/A 2382644Sstever@eecs.umich.edu // just change status to Idle... if status != Running, 2392644Sstever@eecs.umich.edu // completeInst() will not initiate fetch of next instruction. 2402623SN/A 2412623SN/A notIdleFraction--; 2422623SN/A _status = Idle; 2432623SN/A} 2442623SN/A 2455728Sgblack@eecs.umich.edubool 2465728Sgblack@eecs.umich.eduTimingSimpleCPU::handleReadPacket(PacketPtr pkt) 2475728Sgblack@eecs.umich.edu{ 2485728Sgblack@eecs.umich.edu RequestPtr req = pkt->req; 2495728Sgblack@eecs.umich.edu if (req->isMmapedIpr()) { 2505728Sgblack@eecs.umich.edu Tick delay; 2515728Sgblack@eecs.umich.edu delay = TheISA::handleIprRead(thread->getTC(), pkt); 2525728Sgblack@eecs.umich.edu new IprEvent(pkt, this, nextCycle(curTick + delay)); 2535728Sgblack@eecs.umich.edu _status = DcacheWaitResponse; 2545728Sgblack@eecs.umich.edu dcache_pkt = NULL; 2555728Sgblack@eecs.umich.edu } else if (!dcachePort.sendTiming(pkt)) { 2565728Sgblack@eecs.umich.edu _status = DcacheRetry; 2575728Sgblack@eecs.umich.edu dcache_pkt = pkt; 2585728Sgblack@eecs.umich.edu } else { 2595728Sgblack@eecs.umich.edu _status = DcacheWaitResponse; 2605728Sgblack@eecs.umich.edu // memory system takes ownership of packet 2615728Sgblack@eecs.umich.edu dcache_pkt = NULL; 2625728Sgblack@eecs.umich.edu } 2635728Sgblack@eecs.umich.edu return dcache_pkt == NULL; 2645728Sgblack@eecs.umich.edu} 2652623SN/A 2665894Sgblack@eecs.umich.eduvoid 2675894Sgblack@eecs.umich.eduTimingSimpleCPU::sendData(Fault fault, RequestPtr req, 2685894Sgblack@eecs.umich.edu uint8_t *data, uint64_t *res, bool read) 2695744Sgblack@eecs.umich.edu{ 2705894Sgblack@eecs.umich.edu _status = Running; 2715894Sgblack@eecs.umich.edu if (fault != NoFault) { 2725894Sgblack@eecs.umich.edu delete data; 2735894Sgblack@eecs.umich.edu delete req; 2745744Sgblack@eecs.umich.edu 2755894Sgblack@eecs.umich.edu translationFault(fault); 2765894Sgblack@eecs.umich.edu return; 2775894Sgblack@eecs.umich.edu } 2785894Sgblack@eecs.umich.edu PacketPtr pkt; 2795894Sgblack@eecs.umich.edu buildPacket(pkt, req, read); 2805894Sgblack@eecs.umich.edu pkt->dataDynamic<uint8_t>(data); 2815894Sgblack@eecs.umich.edu if (req->getFlags().isSet(Request::NO_ACCESS)) { 2825894Sgblack@eecs.umich.edu assert(!dcache_pkt); 2835894Sgblack@eecs.umich.edu pkt->makeResponse(); 2845894Sgblack@eecs.umich.edu completeDataAccess(pkt); 2855894Sgblack@eecs.umich.edu } else if (read) { 2865894Sgblack@eecs.umich.edu handleReadPacket(pkt); 2875894Sgblack@eecs.umich.edu } else { 2885894Sgblack@eecs.umich.edu bool do_access = true; // flag to suppress cache access 2895894Sgblack@eecs.umich.edu 2905894Sgblack@eecs.umich.edu if (req->isLocked()) { 2915894Sgblack@eecs.umich.edu do_access = TheISA::handleLockedWrite(thread, req); 2925894Sgblack@eecs.umich.edu } else if (req->isCondSwap()) { 2935894Sgblack@eecs.umich.edu assert(res); 2945894Sgblack@eecs.umich.edu req->setExtraData(*res); 2955894Sgblack@eecs.umich.edu } 2965894Sgblack@eecs.umich.edu 2975894Sgblack@eecs.umich.edu if (do_access) { 2985894Sgblack@eecs.umich.edu dcache_pkt = pkt; 2995894Sgblack@eecs.umich.edu handleWritePacket(); 3005894Sgblack@eecs.umich.edu } else { 3015894Sgblack@eecs.umich.edu _status = DcacheWaitResponse; 3025894Sgblack@eecs.umich.edu completeDataAccess(pkt); 3035894Sgblack@eecs.umich.edu } 3045894Sgblack@eecs.umich.edu } 3055894Sgblack@eecs.umich.edu} 3065894Sgblack@eecs.umich.edu 3075894Sgblack@eecs.umich.eduvoid 3085894Sgblack@eecs.umich.eduTimingSimpleCPU::sendSplitData(Fault fault1, Fault fault2, 3095894Sgblack@eecs.umich.edu RequestPtr req1, RequestPtr req2, RequestPtr req, 3105894Sgblack@eecs.umich.edu uint8_t *data, bool read) 3115894Sgblack@eecs.umich.edu{ 3125894Sgblack@eecs.umich.edu _status = Running; 3135894Sgblack@eecs.umich.edu if (fault1 != NoFault || fault2 != NoFault) { 3145894Sgblack@eecs.umich.edu delete data; 3155890Sgblack@eecs.umich.edu delete req1; 3165894Sgblack@eecs.umich.edu delete req2; 3175894Sgblack@eecs.umich.edu if (fault1 != NoFault) 3185894Sgblack@eecs.umich.edu translationFault(fault1); 3195894Sgblack@eecs.umich.edu else if (fault2 != NoFault) 3205894Sgblack@eecs.umich.edu translationFault(fault2); 3215894Sgblack@eecs.umich.edu return; 3225894Sgblack@eecs.umich.edu } 3235894Sgblack@eecs.umich.edu PacketPtr pkt1, pkt2; 3245894Sgblack@eecs.umich.edu buildSplitPacket(pkt1, pkt2, req1, req2, req, data, read); 3255894Sgblack@eecs.umich.edu if (req->getFlags().isSet(Request::NO_ACCESS)) { 3265894Sgblack@eecs.umich.edu assert(!dcache_pkt); 3275894Sgblack@eecs.umich.edu pkt1->makeResponse(); 3285894Sgblack@eecs.umich.edu completeDataAccess(pkt1); 3295894Sgblack@eecs.umich.edu } else if (read) { 3305894Sgblack@eecs.umich.edu if (handleReadPacket(pkt1)) { 3315894Sgblack@eecs.umich.edu SplitFragmentSenderState * send_state = 3325894Sgblack@eecs.umich.edu dynamic_cast<SplitFragmentSenderState *>(pkt1->senderState); 3335894Sgblack@eecs.umich.edu send_state->clearFromParent(); 3345894Sgblack@eecs.umich.edu if (handleReadPacket(pkt2)) { 3355894Sgblack@eecs.umich.edu send_state = dynamic_cast<SplitFragmentSenderState *>( 3365894Sgblack@eecs.umich.edu pkt1->senderState); 3375894Sgblack@eecs.umich.edu send_state->clearFromParent(); 3385894Sgblack@eecs.umich.edu } 3395894Sgblack@eecs.umich.edu } 3405894Sgblack@eecs.umich.edu } else { 3415894Sgblack@eecs.umich.edu dcache_pkt = pkt1; 3425894Sgblack@eecs.umich.edu if (handleWritePacket()) { 3435894Sgblack@eecs.umich.edu SplitFragmentSenderState * send_state = 3445894Sgblack@eecs.umich.edu dynamic_cast<SplitFragmentSenderState *>(pkt1->senderState); 3455894Sgblack@eecs.umich.edu send_state->clearFromParent(); 3465894Sgblack@eecs.umich.edu dcache_pkt = pkt2; 3475894Sgblack@eecs.umich.edu if (handleWritePacket()) { 3485894Sgblack@eecs.umich.edu send_state = dynamic_cast<SplitFragmentSenderState *>( 3495894Sgblack@eecs.umich.edu pkt1->senderState); 3505894Sgblack@eecs.umich.edu send_state->clearFromParent(); 3515894Sgblack@eecs.umich.edu } 3525894Sgblack@eecs.umich.edu } 3535894Sgblack@eecs.umich.edu } 3545894Sgblack@eecs.umich.edu} 3555894Sgblack@eecs.umich.edu 3565894Sgblack@eecs.umich.eduvoid 3575894Sgblack@eecs.umich.eduTimingSimpleCPU::translationFault(Fault fault) 3585894Sgblack@eecs.umich.edu{ 3595894Sgblack@eecs.umich.edu numCycles += tickToCycles(curTick - previousTick); 3605894Sgblack@eecs.umich.edu previousTick = curTick; 3615894Sgblack@eecs.umich.edu 3625894Sgblack@eecs.umich.edu if (traceData) { 3635894Sgblack@eecs.umich.edu // Since there was a fault, we shouldn't trace this instruction. 3645894Sgblack@eecs.umich.edu delete traceData; 3655894Sgblack@eecs.umich.edu traceData = NULL; 3665744Sgblack@eecs.umich.edu } 3675744Sgblack@eecs.umich.edu 3685894Sgblack@eecs.umich.edu postExecute(); 3695894Sgblack@eecs.umich.edu 3705894Sgblack@eecs.umich.edu if (getState() == SimObject::Draining) { 3715894Sgblack@eecs.umich.edu advancePC(fault); 3725894Sgblack@eecs.umich.edu completeDrain(); 3735894Sgblack@eecs.umich.edu } else { 3745894Sgblack@eecs.umich.edu advanceInst(fault); 3755894Sgblack@eecs.umich.edu } 3765894Sgblack@eecs.umich.edu} 3775894Sgblack@eecs.umich.edu 3785894Sgblack@eecs.umich.eduvoid 3795894Sgblack@eecs.umich.eduTimingSimpleCPU::buildPacket(PacketPtr &pkt, RequestPtr req, bool read) 3805894Sgblack@eecs.umich.edu{ 3815894Sgblack@eecs.umich.edu MemCmd cmd; 3825894Sgblack@eecs.umich.edu if (read) { 3835894Sgblack@eecs.umich.edu cmd = MemCmd::ReadReq; 3845894Sgblack@eecs.umich.edu if (req->isLocked()) 3855894Sgblack@eecs.umich.edu cmd = MemCmd::LoadLockedReq; 3865894Sgblack@eecs.umich.edu } else { 3875894Sgblack@eecs.umich.edu cmd = MemCmd::WriteReq; 3885894Sgblack@eecs.umich.edu if (req->isLocked()) { 3895894Sgblack@eecs.umich.edu cmd = MemCmd::StoreCondReq; 3905894Sgblack@eecs.umich.edu } else if (req->isSwap()) { 3915894Sgblack@eecs.umich.edu cmd = MemCmd::SwapReq; 3925894Sgblack@eecs.umich.edu } 3935894Sgblack@eecs.umich.edu } 3945894Sgblack@eecs.umich.edu pkt = new Packet(req, cmd, Packet::Broadcast); 3955894Sgblack@eecs.umich.edu} 3965894Sgblack@eecs.umich.edu 3975894Sgblack@eecs.umich.eduvoid 3985894Sgblack@eecs.umich.eduTimingSimpleCPU::buildSplitPacket(PacketPtr &pkt1, PacketPtr &pkt2, 3995894Sgblack@eecs.umich.edu RequestPtr req1, RequestPtr req2, RequestPtr req, 4005894Sgblack@eecs.umich.edu uint8_t *data, bool read) 4015894Sgblack@eecs.umich.edu{ 4025894Sgblack@eecs.umich.edu pkt1 = pkt2 = NULL; 4035894Sgblack@eecs.umich.edu 4045744Sgblack@eecs.umich.edu assert(!req1->isMmapedIpr() && !req2->isMmapedIpr()); 4055744Sgblack@eecs.umich.edu 4065894Sgblack@eecs.umich.edu if (req->getFlags().isSet(Request::NO_ACCESS)) { 4075894Sgblack@eecs.umich.edu buildPacket(pkt1, req, read); 4085894Sgblack@eecs.umich.edu return; 4095894Sgblack@eecs.umich.edu } 4105894Sgblack@eecs.umich.edu 4115894Sgblack@eecs.umich.edu buildPacket(pkt1, req1, read); 4125894Sgblack@eecs.umich.edu buildPacket(pkt2, req2, read); 4135894Sgblack@eecs.umich.edu 4145744Sgblack@eecs.umich.edu req->setPhys(req1->getPaddr(), req->getSize(), req1->getFlags()); 4155744Sgblack@eecs.umich.edu PacketPtr pkt = new Packet(req, pkt1->cmd.responseCommand(), 4165744Sgblack@eecs.umich.edu Packet::Broadcast); 4175744Sgblack@eecs.umich.edu 4185744Sgblack@eecs.umich.edu pkt->dataDynamic<uint8_t>(data); 4195744Sgblack@eecs.umich.edu pkt1->dataStatic<uint8_t>(data); 4205744Sgblack@eecs.umich.edu pkt2->dataStatic<uint8_t>(data + req1->getSize()); 4215744Sgblack@eecs.umich.edu 4225744Sgblack@eecs.umich.edu SplitMainSenderState * main_send_state = new SplitMainSenderState; 4235744Sgblack@eecs.umich.edu pkt->senderState = main_send_state; 4245744Sgblack@eecs.umich.edu main_send_state->fragments[0] = pkt1; 4255744Sgblack@eecs.umich.edu main_send_state->fragments[1] = pkt2; 4265744Sgblack@eecs.umich.edu main_send_state->outstanding = 2; 4275744Sgblack@eecs.umich.edu pkt1->senderState = new SplitFragmentSenderState(pkt, 0); 4285744Sgblack@eecs.umich.edu pkt2->senderState = new SplitFragmentSenderState(pkt, 1); 4295744Sgblack@eecs.umich.edu} 4305744Sgblack@eecs.umich.edu 4312623SN/Atemplate <class T> 4322623SN/AFault 4332623SN/ATimingSimpleCPU::read(Addr addr, T &data, unsigned flags) 4342623SN/A{ 4355728Sgblack@eecs.umich.edu Fault fault; 4365728Sgblack@eecs.umich.edu const int asid = 0; 4375728Sgblack@eecs.umich.edu const int thread_id = 0; 4385728Sgblack@eecs.umich.edu const Addr pc = thread->readPC(); 4395728Sgblack@eecs.umich.edu int block_size = dcachePort.peerBlockSize(); 4405728Sgblack@eecs.umich.edu int data_size = sizeof(T); 4412623SN/A 4425744Sgblack@eecs.umich.edu RequestPtr req = new Request(asid, addr, data_size, 4435744Sgblack@eecs.umich.edu flags, pc, _cpuId, thread_id); 4445728Sgblack@eecs.umich.edu 4455744Sgblack@eecs.umich.edu Addr split_addr = roundDown(addr + data_size - 1, block_size); 4465744Sgblack@eecs.umich.edu assert(split_addr <= addr || split_addr - addr < block_size); 4475728Sgblack@eecs.umich.edu 4485894Sgblack@eecs.umich.edu 4495894Sgblack@eecs.umich.edu _status = DTBWaitResponse; 4505744Sgblack@eecs.umich.edu if (split_addr > addr) { 4515894Sgblack@eecs.umich.edu RequestPtr req1, req2; 4525894Sgblack@eecs.umich.edu assert(!req->isLocked() && !req->isSwap()); 4535894Sgblack@eecs.umich.edu req->splitOnVaddr(split_addr, req1, req2); 4545894Sgblack@eecs.umich.edu 4555894Sgblack@eecs.umich.edu typedef SplitDataTranslation::WholeTranslationState WholeState; 4565894Sgblack@eecs.umich.edu WholeState *state = new WholeState(req1, req2, req, 4575894Sgblack@eecs.umich.edu (uint8_t *)(new T), true); 4585894Sgblack@eecs.umich.edu thread->dtb->translateTiming(req1, tc, 4595894Sgblack@eecs.umich.edu new SplitDataTranslation(this, 0, state), false); 4605894Sgblack@eecs.umich.edu thread->dtb->translateTiming(req2, tc, 4615894Sgblack@eecs.umich.edu new SplitDataTranslation(this, 1, state), false); 4625744Sgblack@eecs.umich.edu } else { 4635894Sgblack@eecs.umich.edu thread->dtb->translateTiming(req, tc, 4645894Sgblack@eecs.umich.edu new DataTranslation(this, (uint8_t *)(new T), NULL, true), 4655894Sgblack@eecs.umich.edu false); 4662623SN/A } 4672623SN/A 4685408Sgblack@eecs.umich.edu if (traceData) { 4695408Sgblack@eecs.umich.edu traceData->setData(data); 4705728Sgblack@eecs.umich.edu traceData->setAddr(addr); 4715408Sgblack@eecs.umich.edu } 4725728Sgblack@eecs.umich.edu 4735728Sgblack@eecs.umich.edu // This will need a new way to tell if it has a dcache attached. 4745728Sgblack@eecs.umich.edu if (req->isUncacheable()) 4755728Sgblack@eecs.umich.edu recordEvent("Uncached Read"); 4765728Sgblack@eecs.umich.edu 4775728Sgblack@eecs.umich.edu return NoFault; 4782623SN/A} 4792623SN/A 4802623SN/A#ifndef DOXYGEN_SHOULD_SKIP_THIS 4812623SN/A 4822623SN/Atemplate 4832623SN/AFault 4844040Ssaidi@eecs.umich.eduTimingSimpleCPU::read(Addr addr, Twin64_t &data, unsigned flags); 4854040Ssaidi@eecs.umich.edu 4864040Ssaidi@eecs.umich.edutemplate 4874040Ssaidi@eecs.umich.eduFault 4884115Ssaidi@eecs.umich.eduTimingSimpleCPU::read(Addr addr, Twin32_t &data, unsigned flags); 4894115Ssaidi@eecs.umich.edu 4904115Ssaidi@eecs.umich.edutemplate 4914115Ssaidi@eecs.umich.eduFault 4922623SN/ATimingSimpleCPU::read(Addr addr, uint64_t &data, unsigned flags); 4932623SN/A 4942623SN/Atemplate 4952623SN/AFault 4962623SN/ATimingSimpleCPU::read(Addr addr, uint32_t &data, unsigned flags); 4972623SN/A 4982623SN/Atemplate 4992623SN/AFault 5002623SN/ATimingSimpleCPU::read(Addr addr, uint16_t &data, unsigned flags); 5012623SN/A 5022623SN/Atemplate 5032623SN/AFault 5042623SN/ATimingSimpleCPU::read(Addr addr, uint8_t &data, unsigned flags); 5052623SN/A 5062623SN/A#endif //DOXYGEN_SHOULD_SKIP_THIS 5072623SN/A 5082623SN/Atemplate<> 5092623SN/AFault 5102623SN/ATimingSimpleCPU::read(Addr addr, double &data, unsigned flags) 5112623SN/A{ 5122623SN/A return read(addr, *(uint64_t*)&data, flags); 5132623SN/A} 5142623SN/A 5152623SN/Atemplate<> 5162623SN/AFault 5172623SN/ATimingSimpleCPU::read(Addr addr, float &data, unsigned flags) 5182623SN/A{ 5192623SN/A return read(addr, *(uint32_t*)&data, flags); 5202623SN/A} 5212623SN/A 5222623SN/A 5232623SN/Atemplate<> 5242623SN/AFault 5252623SN/ATimingSimpleCPU::read(Addr addr, int32_t &data, unsigned flags) 5262623SN/A{ 5272623SN/A return read(addr, (uint32_t&)data, flags); 5282623SN/A} 5292623SN/A 5305728Sgblack@eecs.umich.edubool 5315728Sgblack@eecs.umich.eduTimingSimpleCPU::handleWritePacket() 5325728Sgblack@eecs.umich.edu{ 5335728Sgblack@eecs.umich.edu RequestPtr req = dcache_pkt->req; 5345728Sgblack@eecs.umich.edu if (req->isMmapedIpr()) { 5355728Sgblack@eecs.umich.edu Tick delay; 5365728Sgblack@eecs.umich.edu delay = TheISA::handleIprWrite(thread->getTC(), dcache_pkt); 5375728Sgblack@eecs.umich.edu new IprEvent(dcache_pkt, this, nextCycle(curTick + delay)); 5385728Sgblack@eecs.umich.edu _status = DcacheWaitResponse; 5395728Sgblack@eecs.umich.edu dcache_pkt = NULL; 5405728Sgblack@eecs.umich.edu } else if (!dcachePort.sendTiming(dcache_pkt)) { 5415728Sgblack@eecs.umich.edu _status = DcacheRetry; 5425728Sgblack@eecs.umich.edu } else { 5435728Sgblack@eecs.umich.edu _status = DcacheWaitResponse; 5445728Sgblack@eecs.umich.edu // memory system takes ownership of packet 5455728Sgblack@eecs.umich.edu dcache_pkt = NULL; 5465728Sgblack@eecs.umich.edu } 5475728Sgblack@eecs.umich.edu return dcache_pkt == NULL; 5485728Sgblack@eecs.umich.edu} 5492623SN/A 5502623SN/Atemplate <class T> 5512623SN/AFault 5522623SN/ATimingSimpleCPU::write(T data, Addr addr, unsigned flags, uint64_t *res) 5532623SN/A{ 5545728Sgblack@eecs.umich.edu const int asid = 0; 5555728Sgblack@eecs.umich.edu const int thread_id = 0; 5565728Sgblack@eecs.umich.edu const Addr pc = thread->readPC(); 5575728Sgblack@eecs.umich.edu int block_size = dcachePort.peerBlockSize(); 5585728Sgblack@eecs.umich.edu int data_size = sizeof(T); 5593169Sstever@eecs.umich.edu 5605744Sgblack@eecs.umich.edu RequestPtr req = new Request(asid, addr, data_size, 5615744Sgblack@eecs.umich.edu flags, pc, _cpuId, thread_id); 5625728Sgblack@eecs.umich.edu 5635744Sgblack@eecs.umich.edu Addr split_addr = roundDown(addr + data_size - 1, block_size); 5645744Sgblack@eecs.umich.edu assert(split_addr <= addr || split_addr - addr < block_size); 5655728Sgblack@eecs.umich.edu 5665894Sgblack@eecs.umich.edu T *dataP = new T; 5675894Sgblack@eecs.umich.edu *dataP = TheISA::gtoh(data); 5685894Sgblack@eecs.umich.edu _status = DTBWaitResponse; 5695744Sgblack@eecs.umich.edu if (split_addr > addr) { 5705894Sgblack@eecs.umich.edu RequestPtr req1, req2; 5715894Sgblack@eecs.umich.edu assert(!req->isLocked() && !req->isSwap()); 5725894Sgblack@eecs.umich.edu req->splitOnVaddr(split_addr, req1, req2); 5735894Sgblack@eecs.umich.edu 5745894Sgblack@eecs.umich.edu typedef SplitDataTranslation::WholeTranslationState WholeState; 5755894Sgblack@eecs.umich.edu WholeState *state = new WholeState(req1, req2, req, 5765894Sgblack@eecs.umich.edu (uint8_t *)dataP, false); 5775894Sgblack@eecs.umich.edu thread->dtb->translateTiming(req1, tc, 5785894Sgblack@eecs.umich.edu new SplitDataTranslation(this, 0, state), true); 5795894Sgblack@eecs.umich.edu thread->dtb->translateTiming(req2, tc, 5805894Sgblack@eecs.umich.edu new SplitDataTranslation(this, 1, state), true); 5815744Sgblack@eecs.umich.edu } else { 5825894Sgblack@eecs.umich.edu thread->dtb->translateTiming(req, tc, 5835894Sgblack@eecs.umich.edu new DataTranslation(this, (uint8_t *)dataP, res, false), 5845894Sgblack@eecs.umich.edu true); 5852623SN/A } 5862623SN/A 5875408Sgblack@eecs.umich.edu if (traceData) { 5885728Sgblack@eecs.umich.edu traceData->setAddr(req->getVaddr()); 5895408Sgblack@eecs.umich.edu traceData->setData(data); 5905408Sgblack@eecs.umich.edu } 5912623SN/A 5925728Sgblack@eecs.umich.edu // This will need a new way to tell if it's hooked up to a cache or not. 5935728Sgblack@eecs.umich.edu if (req->isUncacheable()) 5945728Sgblack@eecs.umich.edu recordEvent("Uncached Write"); 5955728Sgblack@eecs.umich.edu 5962623SN/A // If the write needs to have a fault on the access, consider calling 5972623SN/A // changeStatus() and changing it to "bad addr write" or something. 5985728Sgblack@eecs.umich.edu return NoFault; 5992623SN/A} 6002623SN/A 6012623SN/A 6022623SN/A#ifndef DOXYGEN_SHOULD_SKIP_THIS 6032623SN/Atemplate 6042623SN/AFault 6054224Sgblack@eecs.umich.eduTimingSimpleCPU::write(Twin32_t data, Addr addr, 6064224Sgblack@eecs.umich.edu unsigned flags, uint64_t *res); 6074224Sgblack@eecs.umich.edu 6084224Sgblack@eecs.umich.edutemplate 6094224Sgblack@eecs.umich.eduFault 6104224Sgblack@eecs.umich.eduTimingSimpleCPU::write(Twin64_t data, Addr addr, 6114224Sgblack@eecs.umich.edu unsigned flags, uint64_t *res); 6124224Sgblack@eecs.umich.edu 6134224Sgblack@eecs.umich.edutemplate 6144224Sgblack@eecs.umich.eduFault 6152623SN/ATimingSimpleCPU::write(uint64_t data, Addr addr, 6162623SN/A unsigned flags, uint64_t *res); 6172623SN/A 6182623SN/Atemplate 6192623SN/AFault 6202623SN/ATimingSimpleCPU::write(uint32_t data, Addr addr, 6212623SN/A unsigned flags, uint64_t *res); 6222623SN/A 6232623SN/Atemplate 6242623SN/AFault 6252623SN/ATimingSimpleCPU::write(uint16_t data, Addr addr, 6262623SN/A unsigned flags, uint64_t *res); 6272623SN/A 6282623SN/Atemplate 6292623SN/AFault 6302623SN/ATimingSimpleCPU::write(uint8_t data, Addr addr, 6312623SN/A unsigned flags, uint64_t *res); 6322623SN/A 6332623SN/A#endif //DOXYGEN_SHOULD_SKIP_THIS 6342623SN/A 6352623SN/Atemplate<> 6362623SN/AFault 6372623SN/ATimingSimpleCPU::write(double data, Addr addr, unsigned flags, uint64_t *res) 6382623SN/A{ 6392623SN/A return write(*(uint64_t*)&data, addr, flags, res); 6402623SN/A} 6412623SN/A 6422623SN/Atemplate<> 6432623SN/AFault 6442623SN/ATimingSimpleCPU::write(float data, Addr addr, unsigned flags, uint64_t *res) 6452623SN/A{ 6462623SN/A return write(*(uint32_t*)&data, addr, flags, res); 6472623SN/A} 6482623SN/A 6492623SN/A 6502623SN/Atemplate<> 6512623SN/AFault 6522623SN/ATimingSimpleCPU::write(int32_t data, Addr addr, unsigned flags, uint64_t *res) 6532623SN/A{ 6542623SN/A return write((uint32_t)data, addr, flags, res); 6552623SN/A} 6562623SN/A 6572623SN/A 6582623SN/Avoid 6592623SN/ATimingSimpleCPU::fetch() 6602623SN/A{ 6615221Ssaidi@eecs.umich.edu DPRINTF(SimpleCPU, "Fetch\n"); 6625221Ssaidi@eecs.umich.edu 6633387Sgblack@eecs.umich.edu if (!curStaticInst || !curStaticInst->isDelayedCommit()) 6643387Sgblack@eecs.umich.edu checkForInterrupts(); 6652631SN/A 6665348Ssaidi@eecs.umich.edu checkPcEventQueue(); 6675348Ssaidi@eecs.umich.edu 6685669Sgblack@eecs.umich.edu bool fromRom = isRomMicroPC(thread->readMicroPC()); 6692623SN/A 6705669Sgblack@eecs.umich.edu if (!fromRom) { 6715669Sgblack@eecs.umich.edu Request *ifetch_req = new Request(); 6725712Shsul@eecs.umich.edu ifetch_req->setThreadContext(_cpuId, /* thread ID */ 0); 6735894Sgblack@eecs.umich.edu setupFetchRequest(ifetch_req); 6745894Sgblack@eecs.umich.edu thread->itb->translateTiming(ifetch_req, tc, 6755894Sgblack@eecs.umich.edu &fetchTranslation); 6762623SN/A } else { 6775669Sgblack@eecs.umich.edu _status = IcacheWaitResponse; 6785669Sgblack@eecs.umich.edu completeIfetch(NULL); 6795894Sgblack@eecs.umich.edu 6805894Sgblack@eecs.umich.edu numCycles += tickToCycles(curTick - previousTick); 6815894Sgblack@eecs.umich.edu previousTick = curTick; 6825894Sgblack@eecs.umich.edu } 6835894Sgblack@eecs.umich.edu} 6845894Sgblack@eecs.umich.edu 6855894Sgblack@eecs.umich.edu 6865894Sgblack@eecs.umich.eduvoid 6875894Sgblack@eecs.umich.eduTimingSimpleCPU::sendFetch(Fault fault, RequestPtr req, ThreadContext *tc) 6885894Sgblack@eecs.umich.edu{ 6895894Sgblack@eecs.umich.edu if (fault == NoFault) { 6905894Sgblack@eecs.umich.edu ifetch_pkt = new Packet(req, MemCmd::ReadReq, Packet::Broadcast); 6915894Sgblack@eecs.umich.edu ifetch_pkt->dataStatic(&inst); 6925894Sgblack@eecs.umich.edu 6935894Sgblack@eecs.umich.edu if (!icachePort.sendTiming(ifetch_pkt)) { 6945894Sgblack@eecs.umich.edu // Need to wait for retry 6955894Sgblack@eecs.umich.edu _status = IcacheRetry; 6965894Sgblack@eecs.umich.edu } else { 6975894Sgblack@eecs.umich.edu // Need to wait for cache to respond 6985894Sgblack@eecs.umich.edu _status = IcacheWaitResponse; 6995894Sgblack@eecs.umich.edu // ownership of packet transferred to memory system 7005894Sgblack@eecs.umich.edu ifetch_pkt = NULL; 7015894Sgblack@eecs.umich.edu } 7025894Sgblack@eecs.umich.edu } else { 7035894Sgblack@eecs.umich.edu delete req; 7045894Sgblack@eecs.umich.edu // fetch fault: advance directly to next instruction (fault handler) 7055894Sgblack@eecs.umich.edu advanceInst(fault); 7062623SN/A } 7073222Sktlim@umich.edu 7085099Ssaidi@eecs.umich.edu numCycles += tickToCycles(curTick - previousTick); 7093222Sktlim@umich.edu previousTick = curTick; 7102623SN/A} 7112623SN/A 7122623SN/A 7132623SN/Avoid 7142644Sstever@eecs.umich.eduTimingSimpleCPU::advanceInst(Fault fault) 7152623SN/A{ 7165726Sgblack@eecs.umich.edu if (fault != NoFault || !stayAtPC) 7175726Sgblack@eecs.umich.edu advancePC(fault); 7182623SN/A 7192631SN/A if (_status == Running) { 7202631SN/A // kick off fetch of next instruction... callback from icache 7212631SN/A // response will cause that instruction to be executed, 7222631SN/A // keeping the CPU running. 7232631SN/A fetch(); 7242631SN/A } 7252623SN/A} 7262623SN/A 7272623SN/A 7282623SN/Avoid 7293349Sbinkertn@umich.eduTimingSimpleCPU::completeIfetch(PacketPtr pkt) 7302623SN/A{ 7315221Ssaidi@eecs.umich.edu DPRINTF(SimpleCPU, "Complete ICache Fetch\n"); 7325221Ssaidi@eecs.umich.edu 7332623SN/A // received a response from the icache: execute the received 7342623SN/A // instruction 7355669Sgblack@eecs.umich.edu 7365669Sgblack@eecs.umich.edu assert(!pkt || !pkt->isError()); 7372623SN/A assert(_status == IcacheWaitResponse); 7382798Sktlim@umich.edu 7392623SN/A _status = Running; 7402644Sstever@eecs.umich.edu 7415099Ssaidi@eecs.umich.edu numCycles += tickToCycles(curTick - previousTick); 7423222Sktlim@umich.edu previousTick = curTick; 7433222Sktlim@umich.edu 7442839Sktlim@umich.edu if (getState() == SimObject::Draining) { 7455669Sgblack@eecs.umich.edu if (pkt) { 7465669Sgblack@eecs.umich.edu delete pkt->req; 7475669Sgblack@eecs.umich.edu delete pkt; 7485669Sgblack@eecs.umich.edu } 7493658Sktlim@umich.edu 7502839Sktlim@umich.edu completeDrain(); 7512798Sktlim@umich.edu return; 7522798Sktlim@umich.edu } 7532798Sktlim@umich.edu 7542623SN/A preExecute(); 7555726Sgblack@eecs.umich.edu if (curStaticInst && 7565726Sgblack@eecs.umich.edu curStaticInst->isMemRef() && !curStaticInst->isDataPrefetch()) { 7572623SN/A // load or store: just send to dcache 7582623SN/A Fault fault = curStaticInst->initiateAcc(this, traceData); 7593170Sstever@eecs.umich.edu if (_status != Running) { 7603170Sstever@eecs.umich.edu // instruction will complete in dcache response callback 7615894Sgblack@eecs.umich.edu assert(_status == DcacheWaitResponse || 7625894Sgblack@eecs.umich.edu _status == DcacheRetry || DTBWaitResponse); 7633170Sstever@eecs.umich.edu assert(fault == NoFault); 7642644Sstever@eecs.umich.edu } else { 7655894Sgblack@eecs.umich.edu if (fault != NoFault && traceData) { 7665001Sgblack@eecs.umich.edu // If there was a fault, we shouldn't trace this instruction. 7675001Sgblack@eecs.umich.edu delete traceData; 7685001Sgblack@eecs.umich.edu traceData = NULL; 7693170Sstever@eecs.umich.edu } 7704998Sgblack@eecs.umich.edu 7712644Sstever@eecs.umich.edu postExecute(); 7725103Ssaidi@eecs.umich.edu // @todo remove me after debugging with legion done 7735103Ssaidi@eecs.umich.edu if (curStaticInst && (!curStaticInst->isMicroop() || 7745103Ssaidi@eecs.umich.edu curStaticInst->isFirstMicroop())) 7755103Ssaidi@eecs.umich.edu instCnt++; 7762644Sstever@eecs.umich.edu advanceInst(fault); 7772644Sstever@eecs.umich.edu } 7785726Sgblack@eecs.umich.edu } else if (curStaticInst) { 7792623SN/A // non-memory instruction: execute completely now 7802623SN/A Fault fault = curStaticInst->execute(this, traceData); 7814998Sgblack@eecs.umich.edu 7824998Sgblack@eecs.umich.edu // keep an instruction count 7834998Sgblack@eecs.umich.edu if (fault == NoFault) 7844998Sgblack@eecs.umich.edu countInst(); 7855001Sgblack@eecs.umich.edu else if (traceData) { 7865001Sgblack@eecs.umich.edu // If there was a fault, we shouldn't trace this instruction. 7875001Sgblack@eecs.umich.edu delete traceData; 7885001Sgblack@eecs.umich.edu traceData = NULL; 7895001Sgblack@eecs.umich.edu } 7904998Sgblack@eecs.umich.edu 7912644Sstever@eecs.umich.edu postExecute(); 7925103Ssaidi@eecs.umich.edu // @todo remove me after debugging with legion done 7935103Ssaidi@eecs.umich.edu if (curStaticInst && (!curStaticInst->isMicroop() || 7945103Ssaidi@eecs.umich.edu curStaticInst->isFirstMicroop())) 7955103Ssaidi@eecs.umich.edu instCnt++; 7962644Sstever@eecs.umich.edu advanceInst(fault); 7975726Sgblack@eecs.umich.edu } else { 7985726Sgblack@eecs.umich.edu advanceInst(NoFault); 7992623SN/A } 8003658Sktlim@umich.edu 8015669Sgblack@eecs.umich.edu if (pkt) { 8025669Sgblack@eecs.umich.edu delete pkt->req; 8035669Sgblack@eecs.umich.edu delete pkt; 8045669Sgblack@eecs.umich.edu } 8052623SN/A} 8062623SN/A 8072948Ssaidi@eecs.umich.eduvoid 8082948Ssaidi@eecs.umich.eduTimingSimpleCPU::IcachePort::ITickEvent::process() 8092948Ssaidi@eecs.umich.edu{ 8102948Ssaidi@eecs.umich.edu cpu->completeIfetch(pkt); 8112948Ssaidi@eecs.umich.edu} 8122623SN/A 8132623SN/Abool 8143349Sbinkertn@umich.eduTimingSimpleCPU::IcachePort::recvTiming(PacketPtr pkt) 8152623SN/A{ 8164986Ssaidi@eecs.umich.edu if (pkt->isResponse() && !pkt->wasNacked()) { 8173310Srdreslin@umich.edu // delay processing of returned data until next CPU clock edge 8184584Ssaidi@eecs.umich.edu Tick next_tick = cpu->nextCycle(curTick); 8192948Ssaidi@eecs.umich.edu 8203495Sktlim@umich.edu if (next_tick == curTick) 8213310Srdreslin@umich.edu cpu->completeIfetch(pkt); 8223310Srdreslin@umich.edu else 8233495Sktlim@umich.edu tickEvent.schedule(pkt, next_tick); 8242948Ssaidi@eecs.umich.edu 8253310Srdreslin@umich.edu return true; 8263310Srdreslin@umich.edu } 8274870Sstever@eecs.umich.edu else if (pkt->wasNacked()) { 8284433Ssaidi@eecs.umich.edu assert(cpu->_status == IcacheWaitResponse); 8294433Ssaidi@eecs.umich.edu pkt->reinitNacked(); 8304433Ssaidi@eecs.umich.edu if (!sendTiming(pkt)) { 8314433Ssaidi@eecs.umich.edu cpu->_status = IcacheRetry; 8324433Ssaidi@eecs.umich.edu cpu->ifetch_pkt = pkt; 8334433Ssaidi@eecs.umich.edu } 8343310Srdreslin@umich.edu } 8354433Ssaidi@eecs.umich.edu //Snooping a Coherence Request, do nothing 8364433Ssaidi@eecs.umich.edu return true; 8372623SN/A} 8382623SN/A 8392657Ssaidi@eecs.umich.eduvoid 8402623SN/ATimingSimpleCPU::IcachePort::recvRetry() 8412623SN/A{ 8422623SN/A // we shouldn't get a retry unless we have a packet that we're 8432623SN/A // waiting to transmit 8442623SN/A assert(cpu->ifetch_pkt != NULL); 8452623SN/A assert(cpu->_status == IcacheRetry); 8463349Sbinkertn@umich.edu PacketPtr tmp = cpu->ifetch_pkt; 8472657Ssaidi@eecs.umich.edu if (sendTiming(tmp)) { 8482657Ssaidi@eecs.umich.edu cpu->_status = IcacheWaitResponse; 8492657Ssaidi@eecs.umich.edu cpu->ifetch_pkt = NULL; 8502657Ssaidi@eecs.umich.edu } 8512623SN/A} 8522623SN/A 8532623SN/Avoid 8543349Sbinkertn@umich.eduTimingSimpleCPU::completeDataAccess(PacketPtr pkt) 8552623SN/A{ 8562623SN/A // received a response from the dcache: complete the load or store 8572623SN/A // instruction 8584870Sstever@eecs.umich.edu assert(!pkt->isError()); 8592623SN/A 8605099Ssaidi@eecs.umich.edu numCycles += tickToCycles(curTick - previousTick); 8613222Sktlim@umich.edu previousTick = curTick; 8623184Srdreslin@umich.edu 8635728Sgblack@eecs.umich.edu if (pkt->senderState) { 8645728Sgblack@eecs.umich.edu SplitFragmentSenderState * send_state = 8655728Sgblack@eecs.umich.edu dynamic_cast<SplitFragmentSenderState *>(pkt->senderState); 8665728Sgblack@eecs.umich.edu assert(send_state); 8675728Sgblack@eecs.umich.edu delete pkt->req; 8685728Sgblack@eecs.umich.edu delete pkt; 8695728Sgblack@eecs.umich.edu PacketPtr big_pkt = send_state->bigPkt; 8705728Sgblack@eecs.umich.edu delete send_state; 8715728Sgblack@eecs.umich.edu 8725728Sgblack@eecs.umich.edu SplitMainSenderState * main_send_state = 8735728Sgblack@eecs.umich.edu dynamic_cast<SplitMainSenderState *>(big_pkt->senderState); 8745728Sgblack@eecs.umich.edu assert(main_send_state); 8755728Sgblack@eecs.umich.edu // Record the fact that this packet is no longer outstanding. 8765728Sgblack@eecs.umich.edu assert(main_send_state->outstanding != 0); 8775728Sgblack@eecs.umich.edu main_send_state->outstanding--; 8785728Sgblack@eecs.umich.edu 8795728Sgblack@eecs.umich.edu if (main_send_state->outstanding) { 8805728Sgblack@eecs.umich.edu return; 8815728Sgblack@eecs.umich.edu } else { 8825728Sgblack@eecs.umich.edu delete main_send_state; 8835728Sgblack@eecs.umich.edu big_pkt->senderState = NULL; 8845728Sgblack@eecs.umich.edu pkt = big_pkt; 8855728Sgblack@eecs.umich.edu } 8865728Sgblack@eecs.umich.edu } 8875728Sgblack@eecs.umich.edu 8885894Sgblack@eecs.umich.edu assert(_status == DcacheWaitResponse || _status == DTBWaitResponse); 8895728Sgblack@eecs.umich.edu _status = Running; 8905728Sgblack@eecs.umich.edu 8912623SN/A Fault fault = curStaticInst->completeAcc(pkt, this, traceData); 8922623SN/A 8934998Sgblack@eecs.umich.edu // keep an instruction count 8944998Sgblack@eecs.umich.edu if (fault == NoFault) 8954998Sgblack@eecs.umich.edu countInst(); 8965001Sgblack@eecs.umich.edu else if (traceData) { 8975001Sgblack@eecs.umich.edu // If there was a fault, we shouldn't trace this instruction. 8985001Sgblack@eecs.umich.edu delete traceData; 8995001Sgblack@eecs.umich.edu traceData = NULL; 9005001Sgblack@eecs.umich.edu } 9014998Sgblack@eecs.umich.edu 9025507Sstever@gmail.com // the locked flag may be cleared on the response packet, so check 9035507Sstever@gmail.com // pkt->req and not pkt to see if it was a load-locked 9045507Sstever@gmail.com if (pkt->isRead() && pkt->req->isLocked()) { 9053170Sstever@eecs.umich.edu TheISA::handleLockedRead(thread, pkt->req); 9063170Sstever@eecs.umich.edu } 9073170Sstever@eecs.umich.edu 9082644Sstever@eecs.umich.edu delete pkt->req; 9092644Sstever@eecs.umich.edu delete pkt; 9102644Sstever@eecs.umich.edu 9113184Srdreslin@umich.edu postExecute(); 9123227Sktlim@umich.edu 9133201Shsul@eecs.umich.edu if (getState() == SimObject::Draining) { 9143201Shsul@eecs.umich.edu advancePC(fault); 9153201Shsul@eecs.umich.edu completeDrain(); 9163201Shsul@eecs.umich.edu 9173201Shsul@eecs.umich.edu return; 9183201Shsul@eecs.umich.edu } 9193201Shsul@eecs.umich.edu 9202644Sstever@eecs.umich.edu advanceInst(fault); 9212623SN/A} 9222623SN/A 9232623SN/A 9242798Sktlim@umich.eduvoid 9252839Sktlim@umich.eduTimingSimpleCPU::completeDrain() 9262798Sktlim@umich.edu{ 9272839Sktlim@umich.edu DPRINTF(Config, "Done draining\n"); 9282901Ssaidi@eecs.umich.edu changeState(SimObject::Drained); 9292839Sktlim@umich.edu drainEvent->process(); 9302798Sktlim@umich.edu} 9312623SN/A 9324192Sktlim@umich.eduvoid 9334192Sktlim@umich.eduTimingSimpleCPU::DcachePort::setPeer(Port *port) 9344192Sktlim@umich.edu{ 9354192Sktlim@umich.edu Port::setPeer(port); 9364192Sktlim@umich.edu 9374192Sktlim@umich.edu#if FULL_SYSTEM 9384192Sktlim@umich.edu // Update the ThreadContext's memory ports (Functional/Virtual 9394192Sktlim@umich.edu // Ports) 9405497Ssaidi@eecs.umich.edu cpu->tcBase()->connectMemPorts(cpu->tcBase()); 9414192Sktlim@umich.edu#endif 9424192Sktlim@umich.edu} 9434192Sktlim@umich.edu 9442623SN/Abool 9453349Sbinkertn@umich.eduTimingSimpleCPU::DcachePort::recvTiming(PacketPtr pkt) 9462623SN/A{ 9474986Ssaidi@eecs.umich.edu if (pkt->isResponse() && !pkt->wasNacked()) { 9483310Srdreslin@umich.edu // delay processing of returned data until next CPU clock edge 9494584Ssaidi@eecs.umich.edu Tick next_tick = cpu->nextCycle(curTick); 9502948Ssaidi@eecs.umich.edu 9515728Sgblack@eecs.umich.edu if (next_tick == curTick) { 9523310Srdreslin@umich.edu cpu->completeDataAccess(pkt); 9535728Sgblack@eecs.umich.edu } else { 9543495Sktlim@umich.edu tickEvent.schedule(pkt, next_tick); 9555728Sgblack@eecs.umich.edu } 9562948Ssaidi@eecs.umich.edu 9573310Srdreslin@umich.edu return true; 9583310Srdreslin@umich.edu } 9594870Sstever@eecs.umich.edu else if (pkt->wasNacked()) { 9604433Ssaidi@eecs.umich.edu assert(cpu->_status == DcacheWaitResponse); 9614433Ssaidi@eecs.umich.edu pkt->reinitNacked(); 9624433Ssaidi@eecs.umich.edu if (!sendTiming(pkt)) { 9634433Ssaidi@eecs.umich.edu cpu->_status = DcacheRetry; 9644433Ssaidi@eecs.umich.edu cpu->dcache_pkt = pkt; 9654433Ssaidi@eecs.umich.edu } 9663310Srdreslin@umich.edu } 9674433Ssaidi@eecs.umich.edu //Snooping a Coherence Request, do nothing 9684433Ssaidi@eecs.umich.edu return true; 9692948Ssaidi@eecs.umich.edu} 9702948Ssaidi@eecs.umich.edu 9712948Ssaidi@eecs.umich.eduvoid 9722948Ssaidi@eecs.umich.eduTimingSimpleCPU::DcachePort::DTickEvent::process() 9732948Ssaidi@eecs.umich.edu{ 9742630SN/A cpu->completeDataAccess(pkt); 9752623SN/A} 9762623SN/A 9772657Ssaidi@eecs.umich.eduvoid 9782623SN/ATimingSimpleCPU::DcachePort::recvRetry() 9792623SN/A{ 9802623SN/A // we shouldn't get a retry unless we have a packet that we're 9812623SN/A // waiting to transmit 9822623SN/A assert(cpu->dcache_pkt != NULL); 9832623SN/A assert(cpu->_status == DcacheRetry); 9843349Sbinkertn@umich.edu PacketPtr tmp = cpu->dcache_pkt; 9855728Sgblack@eecs.umich.edu if (tmp->senderState) { 9865728Sgblack@eecs.umich.edu // This is a packet from a split access. 9875728Sgblack@eecs.umich.edu SplitFragmentSenderState * send_state = 9885728Sgblack@eecs.umich.edu dynamic_cast<SplitFragmentSenderState *>(tmp->senderState); 9895728Sgblack@eecs.umich.edu assert(send_state); 9905728Sgblack@eecs.umich.edu PacketPtr big_pkt = send_state->bigPkt; 9915728Sgblack@eecs.umich.edu 9925728Sgblack@eecs.umich.edu SplitMainSenderState * main_send_state = 9935728Sgblack@eecs.umich.edu dynamic_cast<SplitMainSenderState *>(big_pkt->senderState); 9945728Sgblack@eecs.umich.edu assert(main_send_state); 9955728Sgblack@eecs.umich.edu 9965728Sgblack@eecs.umich.edu if (sendTiming(tmp)) { 9975728Sgblack@eecs.umich.edu // If we were able to send without retrying, record that fact 9985728Sgblack@eecs.umich.edu // and try sending the other fragment. 9995728Sgblack@eecs.umich.edu send_state->clearFromParent(); 10005728Sgblack@eecs.umich.edu int other_index = main_send_state->getPendingFragment(); 10015728Sgblack@eecs.umich.edu if (other_index > 0) { 10025728Sgblack@eecs.umich.edu tmp = main_send_state->fragments[other_index]; 10035728Sgblack@eecs.umich.edu cpu->dcache_pkt = tmp; 10045728Sgblack@eecs.umich.edu if ((big_pkt->isRead() && cpu->handleReadPacket(tmp)) || 10055728Sgblack@eecs.umich.edu (big_pkt->isWrite() && cpu->handleWritePacket())) { 10065728Sgblack@eecs.umich.edu main_send_state->fragments[other_index] = NULL; 10075728Sgblack@eecs.umich.edu } 10085728Sgblack@eecs.umich.edu } else { 10095728Sgblack@eecs.umich.edu cpu->_status = DcacheWaitResponse; 10105728Sgblack@eecs.umich.edu // memory system takes ownership of packet 10115728Sgblack@eecs.umich.edu cpu->dcache_pkt = NULL; 10125728Sgblack@eecs.umich.edu } 10135728Sgblack@eecs.umich.edu } 10145728Sgblack@eecs.umich.edu } else if (sendTiming(tmp)) { 10152657Ssaidi@eecs.umich.edu cpu->_status = DcacheWaitResponse; 10163170Sstever@eecs.umich.edu // memory system takes ownership of packet 10172657Ssaidi@eecs.umich.edu cpu->dcache_pkt = NULL; 10182657Ssaidi@eecs.umich.edu } 10192623SN/A} 10202623SN/A 10215606Snate@binkert.orgTimingSimpleCPU::IprEvent::IprEvent(Packet *_pkt, TimingSimpleCPU *_cpu, 10225606Snate@binkert.org Tick t) 10235606Snate@binkert.org : pkt(_pkt), cpu(_cpu) 10245103Ssaidi@eecs.umich.edu{ 10255606Snate@binkert.org cpu->schedule(this, t); 10265103Ssaidi@eecs.umich.edu} 10275103Ssaidi@eecs.umich.edu 10285103Ssaidi@eecs.umich.eduvoid 10295103Ssaidi@eecs.umich.eduTimingSimpleCPU::IprEvent::process() 10305103Ssaidi@eecs.umich.edu{ 10315103Ssaidi@eecs.umich.edu cpu->completeDataAccess(pkt); 10325103Ssaidi@eecs.umich.edu} 10335103Ssaidi@eecs.umich.edu 10345103Ssaidi@eecs.umich.educonst char * 10355336Shines@cs.fsu.eduTimingSimpleCPU::IprEvent::description() const 10365103Ssaidi@eecs.umich.edu{ 10375103Ssaidi@eecs.umich.edu return "Timing Simple CPU Delay IPR event"; 10385103Ssaidi@eecs.umich.edu} 10395103Ssaidi@eecs.umich.edu 10402623SN/A 10415315Sstever@gmail.comvoid 10425315Sstever@gmail.comTimingSimpleCPU::printAddr(Addr a) 10435315Sstever@gmail.com{ 10445315Sstever@gmail.com dcachePort.printAddr(a); 10455315Sstever@gmail.com} 10465315Sstever@gmail.com 10475315Sstever@gmail.com 10482623SN/A//////////////////////////////////////////////////////////////////////// 10492623SN/A// 10502623SN/A// TimingSimpleCPU Simulation Object 10512623SN/A// 10524762Snate@binkert.orgTimingSimpleCPU * 10534762Snate@binkert.orgTimingSimpleCPUParams::create() 10542623SN/A{ 10555529Snate@binkert.org numThreads = 1; 10565529Snate@binkert.org#if !FULL_SYSTEM 10574762Snate@binkert.org if (workload.size() != 1) 10584762Snate@binkert.org panic("only one workload allowed"); 10592623SN/A#endif 10605529Snate@binkert.org return new TimingSimpleCPU(this); 10612623SN/A} 1062