port.cc revision 8232
1/* 2 * Copyright (c) 2002-2005 The Regents of The University of Michigan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Authors: Steve Reinhardt 29 */ 30 31/** 32 * @file 33 * Port object definitions. 34 */ 35#include <cstring> 36 37#include "base/chunk_generator.hh" 38#include "base/trace.hh" 39#include "debug/Config.hh" 40#include "mem/mem_object.hh" 41#include "mem/port.hh" 42 43class DefaultPeerPort : public Port 44{ 45 protected: 46 void blowUp() const 47 { 48 fatal("%s: Unconnected port!", peer->name()); 49 } 50 51 public: 52 DefaultPeerPort() 53 : Port("default_port", NULL) 54 { } 55 56 bool recvTiming(PacketPtr) 57 { 58 blowUp(); 59 return false; 60 } 61 62 Tick recvAtomic(PacketPtr) 63 { 64 blowUp(); 65 return 0; 66 } 67 68 void recvFunctional(PacketPtr) 69 { 70 blowUp(); 71 } 72 73 void recvStatusChange(Status) 74 { 75 blowUp(); 76 } 77 78 unsigned 79 deviceBlockSize() const 80 { 81 blowUp(); 82 return 0; 83 } 84 85 void getDeviceAddressRanges(AddrRangeList &, bool &) 86 { 87 blowUp(); 88 } 89 90 bool isDefaultPort() const { return true; } 91}; 92 93DefaultPeerPort defaultPeerPort; 94 95Port::Port(const std::string &_name, MemObject *_owner) 96 : EventManager(_owner), portName(_name), peer(&defaultPeerPort), 97 owner(_owner) 98{ 99} 100 101Port::~Port() 102{ 103} 104 105void 106Port::setPeer(Port *port) 107{ 108 DPRINTF(Config, "setting peer to %s\n", port->name()); 109 110 peer = port; 111} 112 113void 114Port::setOwner(MemObject *_owner) 115{ 116 eventq = _owner->queue(); 117 owner = _owner; 118} 119 120void 121Port::removeConn() 122{ 123 if (peer->getOwner()) 124 peer->getOwner()->deletePortRefs(peer); 125 peer = NULL; 126} 127 128void 129Port::blobHelper(Addr addr, uint8_t *p, int size, MemCmd cmd) 130{ 131 Request req; 132 133 for (ChunkGenerator gen(addr, size, peerBlockSize()); 134 !gen.done(); gen.next()) { 135 req.setPhys(gen.addr(), gen.size(), 0); 136 Packet pkt(&req, cmd, Packet::Broadcast); 137 pkt.dataStatic(p); 138 sendFunctional(&pkt); 139 p += gen.size(); 140 } 141} 142 143void 144Port::writeBlob(Addr addr, uint8_t *p, int size) 145{ 146 blobHelper(addr, p, size, MemCmd::WriteReq); 147} 148 149void 150Port::readBlob(Addr addr, uint8_t *p, int size) 151{ 152 blobHelper(addr, p, size, MemCmd::ReadReq); 153} 154 155void 156Port::memsetBlob(Addr addr, uint8_t val, int size) 157{ 158 // quick and dirty... 159 uint8_t *buf = new uint8_t[size]; 160 161 std::memset(buf, val, size); 162 blobHelper(addr, buf, size, MemCmd::WriteReq); 163 164 delete [] buf; 165} 166 167 168void 169Port::printAddr(Addr a) 170{ 171 Request req(a, 1, 0); 172 Packet pkt(&req, MemCmd::PrintReq, Packet::Broadcast); 173 Packet::PrintReqState prs(std::cerr); 174 pkt.senderState = &prs; 175 176 sendFunctional(&pkt); 177} 178