port.cc revision 9089:da918cb3462e
1/* 2 * Copyright (c) 2012 ARM Limited 3 * All rights reserved 4 * 5 * The license below extends only to copyright in the software and shall 6 * not be construed as granting a license to any other intellectual 7 * property including but not limited to intellectual property relating 8 * to a hardware implementation of the functionality of the software 9 * licensed hereunder. You may use the software subject to the license 10 * terms below provided that you ensure that this notice is replicated 11 * unmodified and in its entirety in all distributions of the software, 12 * modified or unmodified, in source code or in binary form. 13 * 14 * Copyright (c) 2002-2005 The Regents of The University of Michigan 15 * All rights reserved. 16 * 17 * Redistribution and use in source and binary forms, with or without 18 * modification, are permitted provided that the following conditions are 19 * met: redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer; 21 * redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution; 24 * neither the name of the copyright holders nor the names of its 25 * contributors may be used to endorse or promote products derived from 26 * this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 29 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 30 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 31 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 32 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 33 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 34 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 35 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 36 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 38 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 39 * 40 * Authors: Steve Reinhardt 41 * Andreas Hansson 42 * William Wang 43 */ 44 45/** 46 * @file 47 * Port object definitions. 48 */ 49#include "base/trace.hh" 50#include "mem/mem_object.hh" 51#include "mem/port.hh" 52 53Port::Port(const std::string &_name, MemObject& _owner, PortID _id) 54 : portName(_name), id(_id), owner(_owner) 55{ 56} 57 58Port::~Port() 59{ 60} 61 62/** 63 * Master port 64 */ 65MasterPort::MasterPort(const std::string& name, MemObject* owner, PortID _id) 66 : Port(name, *owner, _id), _slavePort(NULL) 67{ 68} 69 70MasterPort::~MasterPort() 71{ 72} 73 74SlavePort& 75MasterPort::getSlavePort() const 76{ 77 if(_slavePort == NULL) 78 panic("Cannot getSlavePort on master port %s that is not connected\n", 79 name()); 80 81 return *_slavePort; 82} 83 84void 85MasterPort::bind(SlavePort& slave_port) 86{ 87 // master port keeps track of the slave port 88 _slavePort = &slave_port; 89 90 // slave port also keeps track of master port 91 _slavePort->bind(*this); 92} 93 94bool 95MasterPort::isConnected() const 96{ 97 return _slavePort != NULL; 98} 99 100unsigned 101MasterPort::peerBlockSize() const 102{ 103 return _slavePort->deviceBlockSize(); 104} 105 106AddrRangeList 107MasterPort::getAddrRanges() const 108{ 109 return _slavePort->getAddrRanges(); 110} 111 112Tick 113MasterPort::sendAtomic(PacketPtr pkt) 114{ 115 assert(pkt->isRequest()); 116 return _slavePort->recvAtomic(pkt); 117} 118 119void 120MasterPort::sendFunctional(PacketPtr pkt) 121{ 122 assert(pkt->isRequest()); 123 return _slavePort->recvFunctional(pkt); 124} 125 126bool 127MasterPort::sendTimingReq(PacketPtr pkt) 128{ 129 assert(pkt->isRequest()); 130 return _slavePort->recvTimingReq(pkt); 131} 132 133bool 134MasterPort::sendTimingSnoopResp(PacketPtr pkt) 135{ 136 assert(pkt->isResponse()); 137 return _slavePort->recvTimingSnoopResp(pkt); 138} 139 140void 141MasterPort::sendRetry() 142{ 143 _slavePort->recvRetry(); 144} 145 146void 147MasterPort::printAddr(Addr a) 148{ 149 Request req(a, 1, 0, Request::funcMasterId); 150 Packet pkt(&req, MemCmd::PrintReq); 151 Packet::PrintReqState prs(std::cerr); 152 pkt.senderState = &prs; 153 154 sendFunctional(&pkt); 155} 156 157/** 158 * Slave port 159 */ 160SlavePort::SlavePort(const std::string& name, MemObject* owner, PortID id) 161 : Port(name, *owner, id), _masterPort(NULL) 162{ 163} 164 165SlavePort::~SlavePort() 166{ 167} 168 169void 170SlavePort::bind(MasterPort& master_port) 171{ 172 _masterPort = &master_port; 173} 174 175MasterPort& 176SlavePort::getMasterPort() const 177{ 178 if (_masterPort == NULL) 179 panic("Cannot getMasterPort on slave port %s that is not connected\n", 180 name()); 181 182 return *_masterPort; 183} 184 185unsigned 186SlavePort::peerBlockSize() const 187{ 188 return _masterPort->deviceBlockSize(); 189} 190 191bool 192SlavePort::isConnected() const 193{ 194 return _masterPort != NULL; 195} 196 197Tick 198SlavePort::sendAtomicSnoop(PacketPtr pkt) 199{ 200 assert(pkt->isRequest()); 201 return _masterPort->recvAtomicSnoop(pkt); 202} 203 204void 205SlavePort::sendFunctionalSnoop(PacketPtr pkt) 206{ 207 assert(pkt->isRequest()); 208 return _masterPort->recvFunctionalSnoop(pkt); 209} 210 211bool 212SlavePort::sendTimingResp(PacketPtr pkt) 213{ 214 assert(pkt->isResponse()); 215 return _masterPort->recvTimingResp(pkt); 216} 217 218void 219SlavePort::sendTimingSnoopReq(PacketPtr pkt) 220{ 221 assert(pkt->isRequest()); 222 _masterPort->recvTimingSnoopReq(pkt); 223} 224 225void 226SlavePort::sendRetry() 227{ 228 _masterPort->recvRetry(); 229} 230