port.cc revision 9087:b5a084a6159b
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 106Tick 107MasterPort::sendAtomic(PacketPtr pkt) 108{ 109 assert(pkt->isRequest()); 110 return _slavePort->recvAtomic(pkt); 111} 112 113void 114MasterPort::sendFunctional(PacketPtr pkt) 115{ 116 assert(pkt->isRequest()); 117 return _slavePort->recvFunctional(pkt); 118} 119 120bool 121MasterPort::sendTimingReq(PacketPtr pkt) 122{ 123 assert(pkt->isRequest()); 124 return _slavePort->recvTimingReq(pkt); 125} 126 127bool 128MasterPort::sendTimingSnoopResp(PacketPtr pkt) 129{ 130 assert(pkt->isResponse()); 131 return _slavePort->recvTimingSnoopResp(pkt); 132} 133 134void 135MasterPort::sendRetry() 136{ 137 _slavePort->recvRetry(); 138} 139 140void 141MasterPort::printAddr(Addr a) 142{ 143 Request req(a, 1, 0, Request::funcMasterId); 144 Packet pkt(&req, MemCmd::PrintReq); 145 Packet::PrintReqState prs(std::cerr); 146 pkt.senderState = &prs; 147 148 sendFunctional(&pkt); 149} 150 151/** 152 * Slave port 153 */ 154SlavePort::SlavePort(const std::string& name, MemObject* owner, PortID id) 155 : Port(name, *owner, id), _masterPort(NULL) 156{ 157} 158 159SlavePort::~SlavePort() 160{ 161} 162 163void 164SlavePort::bind(MasterPort& master_port) 165{ 166 _masterPort = &master_port; 167} 168 169MasterPort& 170SlavePort::getMasterPort() const 171{ 172 if (_masterPort == NULL) 173 panic("Cannot getMasterPort on slave port %s that is not connected\n", 174 name()); 175 176 return *_masterPort; 177} 178 179unsigned 180SlavePort::peerBlockSize() const 181{ 182 return _masterPort->deviceBlockSize(); 183} 184 185bool 186SlavePort::isConnected() const 187{ 188 return _masterPort != NULL; 189} 190 191Tick 192SlavePort::sendAtomicSnoop(PacketPtr pkt) 193{ 194 assert(pkt->isRequest()); 195 return _masterPort->recvAtomicSnoop(pkt); 196} 197 198void 199SlavePort::sendFunctionalSnoop(PacketPtr pkt) 200{ 201 assert(pkt->isRequest()); 202 return _masterPort->recvFunctionalSnoop(pkt); 203} 204 205bool 206SlavePort::sendTimingResp(PacketPtr pkt) 207{ 208 assert(pkt->isResponse()); 209 return _masterPort->recvTimingResp(pkt); 210} 211 212void 213SlavePort::sendTimingSnoopReq(PacketPtr pkt) 214{ 215 assert(pkt->isRequest()); 216 _masterPort->recvTimingSnoopReq(pkt); 217} 218 219void 220SlavePort::sendRetry() 221{ 222 _masterPort->recvRetry(); 223} 224