port.cc revision 8708:7ccbdea0fa12
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 : portName(_name), peer(&defaultPeerPort), owner(_owner) 97{ 98} 99 100Port::~Port() 101{ 102} 103 104void 105Port::setPeer(Port *port) 106{ 107 DPRINTF(Config, "setting peer to %s\n", port->name()); 108 109 peer = port; 110} 111 112void 113Port::setOwner(MemObject *_owner) 114{ 115 owner = _owner; 116} 117 118void 119Port::removeConn() 120{ 121 if (peer->getOwner()) 122 peer->getOwner()->deletePortRefs(peer); 123 peer = NULL; 124} 125 126void 127Port::blobHelper(Addr addr, uint8_t *p, int size, MemCmd cmd) 128{ 129 Request req; 130 131 for (ChunkGenerator gen(addr, size, peerBlockSize()); 132 !gen.done(); gen.next()) { 133 req.setPhys(gen.addr(), gen.size(), 0); 134 Packet pkt(&req, cmd, Packet::Broadcast); 135 pkt.dataStatic(p); 136 sendFunctional(&pkt); 137 p += gen.size(); 138 } 139} 140 141void 142Port::writeBlob(Addr addr, uint8_t *p, int size) 143{ 144 blobHelper(addr, p, size, MemCmd::WriteReq); 145} 146 147void 148Port::readBlob(Addr addr, uint8_t *p, int size) 149{ 150 blobHelper(addr, p, size, MemCmd::ReadReq); 151} 152 153void 154Port::memsetBlob(Addr addr, uint8_t val, int size) 155{ 156 // quick and dirty... 157 uint8_t *buf = new uint8_t[size]; 158 159 std::memset(buf, val, size); 160 blobHelper(addr, buf, size, MemCmd::WriteReq); 161 162 delete [] buf; 163} 164 165 166void 167Port::printAddr(Addr a) 168{ 169 Request req(a, 1, 0); 170 Packet pkt(&req, MemCmd::PrintReq, Packet::Broadcast); 171 Packet::PrintReqState prs(std::cerr); 172 pkt.senderState = &prs; 173 174 sendFunctional(&pkt); 175} 176