port.cc revision 13845
12405SN/A/* 212342Snikos.nikoleris@arm.com * Copyright (c) 2012,2015,2017 ARM Limited 38922Swilliam.wang@arm.com * All rights reserved 48922Swilliam.wang@arm.com * 58922Swilliam.wang@arm.com * The license below extends only to copyright in the software and shall 68922Swilliam.wang@arm.com * not be construed as granting a license to any other intellectual 78922Swilliam.wang@arm.com * property including but not limited to intellectual property relating 88922Swilliam.wang@arm.com * to a hardware implementation of the functionality of the software 98922Swilliam.wang@arm.com * licensed hereunder. You may use the software subject to the license 108922Swilliam.wang@arm.com * terms below provided that you ensure that this notice is replicated 118922Swilliam.wang@arm.com * unmodified and in its entirety in all distributions of the software, 128922Swilliam.wang@arm.com * modified or unmodified, in source code or in binary form. 138922Swilliam.wang@arm.com * 142405SN/A * Copyright (c) 2002-2005 The Regents of The University of Michigan 152405SN/A * All rights reserved. 162405SN/A * 172405SN/A * Redistribution and use in source and binary forms, with or without 182405SN/A * modification, are permitted provided that the following conditions are 192405SN/A * met: redistributions of source code must retain the above copyright 202405SN/A * notice, this list of conditions and the following disclaimer; 212405SN/A * redistributions in binary form must reproduce the above copyright 222405SN/A * notice, this list of conditions and the following disclaimer in the 232405SN/A * documentation and/or other materials provided with the distribution; 242405SN/A * neither the name of the copyright holders nor the names of its 252405SN/A * contributors may be used to endorse or promote products derived from 262405SN/A * this software without specific prior written permission. 272405SN/A * 282405SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 292405SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 302405SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 312405SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 322405SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 332405SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 342405SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 352405SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 362405SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 372405SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 382405SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 392665Ssaidi@eecs.umich.edu * 402665Ssaidi@eecs.umich.edu * Authors: Steve Reinhardt 418922Swilliam.wang@arm.com * Andreas Hansson 428922Swilliam.wang@arm.com * William Wang 432405SN/A */ 442405SN/A 452405SN/A/** 462982Sstever@eecs.umich.edu * @file 472982Sstever@eecs.umich.edu * Port object definitions. 482405SN/A */ 4911793Sbrandon.potter@amd.com#include "mem/port.hh" 5011793Sbrandon.potter@amd.com 512642Sstever@eecs.umich.edu#include "base/trace.hh" 524190Ssaidi@eecs.umich.edu#include "mem/mem_object.hh" 532405SN/A 5413769Sgabeblack@google.comBaseMasterPort::BaseMasterPort(const std::string &name, PortID _id) 5513769Sgabeblack@google.com : Port(name, _id), _baseSlavePort(NULL) 569294Sandreas.hansson@arm.com{ 579294Sandreas.hansson@arm.com} 589294Sandreas.hansson@arm.com 599294Sandreas.hansson@arm.comBaseMasterPort::~BaseMasterPort() 609294Sandreas.hansson@arm.com{ 619294Sandreas.hansson@arm.com} 629294Sandreas.hansson@arm.com 639294Sandreas.hansson@arm.comBaseSlavePort& 649294Sandreas.hansson@arm.comBaseMasterPort::getSlavePort() const 659294Sandreas.hansson@arm.com{ 6611321Ssteve.reinhardt@amd.com if (_baseSlavePort == NULL) 679294Sandreas.hansson@arm.com panic("Cannot getSlavePort on master port %s that is not connected\n", 689294Sandreas.hansson@arm.com name()); 699294Sandreas.hansson@arm.com 709294Sandreas.hansson@arm.com return *_baseSlavePort; 719294Sandreas.hansson@arm.com} 729294Sandreas.hansson@arm.com 7313769Sgabeblack@google.comBaseSlavePort::BaseSlavePort(const std::string &name, PortID _id) 7413769Sgabeblack@google.com : Port(name, _id), _baseMasterPort(NULL) 759294Sandreas.hansson@arm.com{ 769294Sandreas.hansson@arm.com} 779294Sandreas.hansson@arm.com 789294Sandreas.hansson@arm.comBaseSlavePort::~BaseSlavePort() 799294Sandreas.hansson@arm.com{ 809294Sandreas.hansson@arm.com} 819294Sandreas.hansson@arm.com 829294Sandreas.hansson@arm.comBaseMasterPort& 839294Sandreas.hansson@arm.comBaseSlavePort::getMasterPort() const 849294Sandreas.hansson@arm.com{ 8511321Ssteve.reinhardt@amd.com if (_baseMasterPort == NULL) 869294Sandreas.hansson@arm.com panic("Cannot getMasterPort on slave port %s that is not connected\n", 879294Sandreas.hansson@arm.com name()); 889294Sandreas.hansson@arm.com 899294Sandreas.hansson@arm.com return *_baseMasterPort; 909294Sandreas.hansson@arm.com} 919294Sandreas.hansson@arm.com 928922Swilliam.wang@arm.com/** 938922Swilliam.wang@arm.com * Master port 948922Swilliam.wang@arm.com */ 9513769Sgabeblack@google.comMasterPort::MasterPort(const std::string& name, MemObject* _owner, PortID _id) 9613769Sgabeblack@google.com : BaseMasterPort(name, _id), _slavePort(NULL), owner(*_owner) 972642Sstever@eecs.umich.edu{ 988922Swilliam.wang@arm.com} 995476Snate@binkert.org 1008922Swilliam.wang@arm.comMasterPort::~MasterPort() 1018922Swilliam.wang@arm.com{ 1028922Swilliam.wang@arm.com} 1038922Swilliam.wang@arm.com 1049294Sandreas.hansson@arm.comvoid 10513782Sgabeblack@google.comMasterPort::bind(Port &peer) 1068922Swilliam.wang@arm.com{ 10713782Sgabeblack@google.com auto *slave_port = dynamic_cast<SlavePort *>(&peer); 10813782Sgabeblack@google.com if (!slave_port) { 10913782Sgabeblack@google.com fatal("Attempt to bind port %s to non-slave port %s.", 11013782Sgabeblack@google.com name(), peer.name()); 11113782Sgabeblack@google.com } 1129294Sandreas.hansson@arm.com // bind on the level of the base ports 11313782Sgabeblack@google.com _baseSlavePort = slave_port; 1148922Swilliam.wang@arm.com 11513782Sgabeblack@google.com // master port keeps track of the slave port 11613782Sgabeblack@google.com _slavePort = slave_port; 11713782Sgabeblack@google.com _connected = true; 11813782Sgabeblack@google.com // slave port also keeps track of master port 11913782Sgabeblack@google.com _slavePort->slaveBind(*this); 1202642Sstever@eecs.umich.edu} 1212642Sstever@eecs.umich.edu 1222642Sstever@eecs.umich.eduvoid 1239178Sandreas.hansson@arm.comMasterPort::unbind() 1249152Satgutier@umich.edu{ 1259178Sandreas.hansson@arm.com if (_slavePort == NULL) 1269178Sandreas.hansson@arm.com panic("Attempting to unbind master port %s that is not connected\n", 1279178Sandreas.hansson@arm.com name()); 12813782Sgabeblack@google.com _slavePort->slaveUnbind(); 1299152Satgutier@umich.edu _slavePort = NULL; 13013782Sgabeblack@google.com _connected = false; 1319294Sandreas.hansson@arm.com _baseSlavePort = NULL; 1328922Swilliam.wang@arm.com} 1338922Swilliam.wang@arm.com 1349089Sandreas.hansson@arm.comAddrRangeList 1359089Sandreas.hansson@arm.comMasterPort::getAddrRanges() const 1369089Sandreas.hansson@arm.com{ 1379089Sandreas.hansson@arm.com return _slavePort->getAddrRanges(); 1389089Sandreas.hansson@arm.com} 1399089Sandreas.hansson@arm.com 1408948Sandreas.hansson@arm.comTick 1418948Sandreas.hansson@arm.comMasterPort::sendAtomic(PacketPtr pkt) 1428948Sandreas.hansson@arm.com{ 1438975Sandreas.hansson@arm.com assert(pkt->isRequest()); 1448948Sandreas.hansson@arm.com return _slavePort->recvAtomic(pkt); 1458948Sandreas.hansson@arm.com} 1468948Sandreas.hansson@arm.com 14713845Sgabeblack@google.comTick 14813845Sgabeblack@google.comMasterPort::sendAtomicBackdoor(PacketPtr pkt, MemBackdoorPtr &backdoor) 14913845Sgabeblack@google.com{ 15013845Sgabeblack@google.com assert(pkt->isRequest()); 15113845Sgabeblack@google.com return _slavePort->recvAtomicBackdoor(pkt, backdoor); 15213845Sgabeblack@google.com} 15313845Sgabeblack@google.com 1548948Sandreas.hansson@arm.comvoid 1558948Sandreas.hansson@arm.comMasterPort::sendFunctional(PacketPtr pkt) 1568948Sandreas.hansson@arm.com{ 1578975Sandreas.hansson@arm.com assert(pkt->isRequest()); 1588948Sandreas.hansson@arm.com return _slavePort->recvFunctional(pkt); 1598948Sandreas.hansson@arm.com} 1608948Sandreas.hansson@arm.com 1618975Sandreas.hansson@arm.combool 1628975Sandreas.hansson@arm.comMasterPort::sendTimingReq(PacketPtr pkt) 1638975Sandreas.hansson@arm.com{ 1648975Sandreas.hansson@arm.com assert(pkt->isRequest()); 1658975Sandreas.hansson@arm.com return _slavePort->recvTimingReq(pkt); 1668975Sandreas.hansson@arm.com} 1678975Sandreas.hansson@arm.com 1688975Sandreas.hansson@arm.combool 16912342Snikos.nikoleris@arm.comMasterPort::tryTiming(PacketPtr pkt) const 17012342Snikos.nikoleris@arm.com{ 17112342Snikos.nikoleris@arm.com assert(pkt->isRequest()); 17212342Snikos.nikoleris@arm.com return _slavePort->tryTiming(pkt); 17312342Snikos.nikoleris@arm.com} 17412342Snikos.nikoleris@arm.com 17512342Snikos.nikoleris@arm.combool 1768975Sandreas.hansson@arm.comMasterPort::sendTimingSnoopResp(PacketPtr pkt) 1778975Sandreas.hansson@arm.com{ 1788975Sandreas.hansson@arm.com assert(pkt->isResponse()); 1798975Sandreas.hansson@arm.com return _slavePort->recvTimingSnoopResp(pkt); 1808975Sandreas.hansson@arm.com} 1818975Sandreas.hansson@arm.com 1828948Sandreas.hansson@arm.comvoid 18310713Sandreas.hansson@arm.comMasterPort::sendRetryResp() 1849087Sandreas.hansson@arm.com{ 18510713Sandreas.hansson@arm.com _slavePort->recvRespRetry(); 1869087Sandreas.hansson@arm.com} 1879087Sandreas.hansson@arm.com 1889087Sandreas.hansson@arm.comvoid 1898922Swilliam.wang@arm.comMasterPort::printAddr(Addr a) 1905314Sstever@gmail.com{ 19112749Sgiacomo.travaglini@arm.com auto req = std::make_shared<Request>( 19212749Sgiacomo.travaglini@arm.com a, 1, 0, Request::funcMasterId); 19312749Sgiacomo.travaglini@arm.com 19412749Sgiacomo.travaglini@arm.com Packet pkt(req, MemCmd::PrintReq); 1955314Sstever@gmail.com Packet::PrintReqState prs(std::cerr); 1965314Sstever@gmail.com pkt.senderState = &prs; 1975314Sstever@gmail.com 1985314Sstever@gmail.com sendFunctional(&pkt); 1995314Sstever@gmail.com} 2008922Swilliam.wang@arm.com 2018922Swilliam.wang@arm.com/** 2028922Swilliam.wang@arm.com * Slave port 2038922Swilliam.wang@arm.com */ 20413769Sgabeblack@google.comSlavePort::SlavePort(const std::string& name, MemObject* _owner, PortID id) 20513845Sgabeblack@google.com : BaseSlavePort(name, id), _masterPort(NULL), defaultBackdoorWarned(false), 20613845Sgabeblack@google.com owner(*_owner) 2078922Swilliam.wang@arm.com{ 2088922Swilliam.wang@arm.com} 2098922Swilliam.wang@arm.com 2108922Swilliam.wang@arm.comSlavePort::~SlavePort() 2118922Swilliam.wang@arm.com{ 2128922Swilliam.wang@arm.com} 2138922Swilliam.wang@arm.com 2148922Swilliam.wang@arm.comvoid 21513782Sgabeblack@google.comSlavePort::slaveUnbind() 2169152Satgutier@umich.edu{ 2179294Sandreas.hansson@arm.com _baseMasterPort = NULL; 2189152Satgutier@umich.edu _masterPort = NULL; 21913782Sgabeblack@google.com _connected = false; 2209152Satgutier@umich.edu} 2219152Satgutier@umich.edu 2229152Satgutier@umich.eduvoid 22313782Sgabeblack@google.comSlavePort::slaveBind(MasterPort& master_port) 2248922Swilliam.wang@arm.com{ 2259294Sandreas.hansson@arm.com _baseMasterPort = &master_port; 2268922Swilliam.wang@arm.com _masterPort = &master_port; 22713782Sgabeblack@google.com _connected = true; 2288922Swilliam.wang@arm.com} 2298922Swilliam.wang@arm.com 2308948Sandreas.hansson@arm.comTick 23113845Sgabeblack@google.comSlavePort::recvAtomicBackdoor(PacketPtr pkt, MemBackdoorPtr &backdoor) 23213845Sgabeblack@google.com{ 23313845Sgabeblack@google.com if (!defaultBackdoorWarned) { 23413845Sgabeblack@google.com warn("Port %s doesn't support requesting a back door.", name()); 23513845Sgabeblack@google.com defaultBackdoorWarned = true; 23613845Sgabeblack@google.com } 23713845Sgabeblack@google.com return recvAtomic(pkt); 23813845Sgabeblack@google.com} 23913845Sgabeblack@google.com 24013845Sgabeblack@google.comTick 2418948Sandreas.hansson@arm.comSlavePort::sendAtomicSnoop(PacketPtr pkt) 2428948Sandreas.hansson@arm.com{ 2438975Sandreas.hansson@arm.com assert(pkt->isRequest()); 2448948Sandreas.hansson@arm.com return _masterPort->recvAtomicSnoop(pkt); 2458948Sandreas.hansson@arm.com} 2468948Sandreas.hansson@arm.com 2478948Sandreas.hansson@arm.comvoid 2488948Sandreas.hansson@arm.comSlavePort::sendFunctionalSnoop(PacketPtr pkt) 2498948Sandreas.hansson@arm.com{ 2508975Sandreas.hansson@arm.com assert(pkt->isRequest()); 2518948Sandreas.hansson@arm.com return _masterPort->recvFunctionalSnoop(pkt); 2528948Sandreas.hansson@arm.com} 2538975Sandreas.hansson@arm.com 2548975Sandreas.hansson@arm.combool 2558975Sandreas.hansson@arm.comSlavePort::sendTimingResp(PacketPtr pkt) 2568975Sandreas.hansson@arm.com{ 2578975Sandreas.hansson@arm.com assert(pkt->isResponse()); 2588975Sandreas.hansson@arm.com return _masterPort->recvTimingResp(pkt); 2598975Sandreas.hansson@arm.com} 2608975Sandreas.hansson@arm.com 2618975Sandreas.hansson@arm.comvoid 2628975Sandreas.hansson@arm.comSlavePort::sendTimingSnoopReq(PacketPtr pkt) 2638975Sandreas.hansson@arm.com{ 2648975Sandreas.hansson@arm.com assert(pkt->isRequest()); 2658975Sandreas.hansson@arm.com _masterPort->recvTimingSnoopReq(pkt); 2668975Sandreas.hansson@arm.com} 2679087Sandreas.hansson@arm.com 2689087Sandreas.hansson@arm.comvoid 26910713Sandreas.hansson@arm.comSlavePort::sendRetryReq() 2709087Sandreas.hansson@arm.com{ 27110713Sandreas.hansson@arm.com _masterPort->recvReqRetry(); 2729087Sandreas.hansson@arm.com} 27310713Sandreas.hansson@arm.com 27410713Sandreas.hansson@arm.comvoid 27510713Sandreas.hansson@arm.comSlavePort::sendRetrySnoopResp() 27610713Sandreas.hansson@arm.com{ 27710713Sandreas.hansson@arm.com _masterPort->recvRetrySnoopResp(); 27810713Sandreas.hansson@arm.com} 279