176 lines
4 KiB
C++
176 lines
4 KiB
C++
/*
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* Copyright (c) 2002-2005 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Steve Reinhardt
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*/
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/**
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* @file
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* Port object definitions.
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*/
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#include <cstring>
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#include "base/chunk_generator.hh"
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#include "base/trace.hh"
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#include "mem/mem_object.hh"
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#include "mem/port.hh"
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class DefaultPeerPort : public Port
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{
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protected:
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void blowUp() const
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{
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fatal("%s: Unconnected port!", peer->name());
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}
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public:
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DefaultPeerPort()
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: Port("default_port", NULL)
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{ }
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bool recvTiming(PacketPtr)
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{
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blowUp();
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return false;
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}
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Tick recvAtomic(PacketPtr)
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{
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blowUp();
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return 0;
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}
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void recvFunctional(PacketPtr)
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{
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blowUp();
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}
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void recvStatusChange(Status)
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{
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blowUp();
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}
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unsigned
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deviceBlockSize() const
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{
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blowUp();
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return 0;
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}
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void getDeviceAddressRanges(AddrRangeList &, bool &)
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{
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blowUp();
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}
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bool isDefaultPort() const { return true; }
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};
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DefaultPeerPort defaultPeerPort;
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Port::Port(const std::string &_name, MemObject *_owner)
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: EventManager(_owner), portName(_name), peer(&defaultPeerPort),
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owner(_owner)
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{
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}
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Port::~Port()
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{
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}
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void
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Port::setPeer(Port *port)
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{
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DPRINTF(Config, "setting peer to %s\n", port->name());
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peer = port;
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}
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void
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Port::setOwner(MemObject *_owner)
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{
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eventq = _owner->queue();
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owner = _owner;
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}
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void
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Port::removeConn()
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{
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if (peer->getOwner())
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peer->getOwner()->deletePortRefs(peer);
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peer = NULL;
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}
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void
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Port::blobHelper(Addr addr, uint8_t *p, int size, MemCmd cmd)
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{
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Request req;
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for (ChunkGenerator gen(addr, size, peerBlockSize());
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!gen.done(); gen.next()) {
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req.setPhys(gen.addr(), gen.size(), 0);
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Packet pkt(&req, cmd, Packet::Broadcast);
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pkt.dataStatic(p);
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sendFunctional(&pkt);
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p += gen.size();
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}
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}
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void
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Port::writeBlob(Addr addr, uint8_t *p, int size)
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{
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blobHelper(addr, p, size, MemCmd::WriteReq);
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}
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void
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Port::readBlob(Addr addr, uint8_t *p, int size)
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{
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blobHelper(addr, p, size, MemCmd::ReadReq);
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}
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void
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Port::memsetBlob(Addr addr, uint8_t val, int size)
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{
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// quick and dirty...
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uint8_t *buf = new uint8_t[size];
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std::memset(buf, val, size);
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blobHelper(addr, buf, size, MemCmd::WriteReq);
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delete [] buf;
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}
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void
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Port::printAddr(Addr a)
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{
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Request req(a, 1, 0);
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Packet pkt(&req, MemCmd::PrintReq, Packet::Broadcast);
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Packet::PrintReqState prs(std::cerr);
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pkt.senderState = &prs;
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sendFunctional(&pkt);
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}
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