275 lines
6.5 KiB
C++
275 lines
6.5 KiB
C++
/*
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* Copyright (c) 2012,2015 ARM Limited
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* All rights reserved
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*
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* The license below extends only to copyright in the software and shall
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* not be construed as granting a license to any other intellectual
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* property including but not limited to intellectual property relating
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* to a hardware implementation of the functionality of the software
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* licensed hereunder. You may use the software subject to the license
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* terms below provided that you ensure that this notice is replicated
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* unmodified and in its entirety in all distributions of the software,
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* modified or unmodified, in source code or in binary form.
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*
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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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* Andreas Hansson
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* William Wang
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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 "mem/port.hh"
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#include "base/trace.hh"
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#include "mem/mem_object.hh"
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Port::Port(const std::string &_name, MemObject& _owner, PortID _id)
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: portName(_name), id(_id), 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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BaseMasterPort::BaseMasterPort(const std::string& name, MemObject* owner,
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PortID _id)
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: Port(name, *owner, _id), _baseSlavePort(NULL)
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{
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}
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BaseMasterPort::~BaseMasterPort()
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{
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}
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BaseSlavePort&
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BaseMasterPort::getSlavePort() const
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{
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if (_baseSlavePort == NULL)
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panic("Cannot getSlavePort on master port %s that is not connected\n",
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name());
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return *_baseSlavePort;
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}
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bool
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BaseMasterPort::isConnected() const
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{
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return _baseSlavePort != NULL;
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}
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BaseSlavePort::BaseSlavePort(const std::string& name, MemObject* owner,
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PortID _id)
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: Port(name, *owner, _id), _baseMasterPort(NULL)
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{
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}
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BaseSlavePort::~BaseSlavePort()
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{
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}
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BaseMasterPort&
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BaseSlavePort::getMasterPort() const
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{
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if (_baseMasterPort == NULL)
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panic("Cannot getMasterPort on slave port %s that is not connected\n",
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name());
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return *_baseMasterPort;
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}
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bool
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BaseSlavePort::isConnected() const
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{
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return _baseMasterPort != NULL;
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}
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/**
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* Master port
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*/
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MasterPort::MasterPort(const std::string& name, MemObject* owner, PortID _id)
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: BaseMasterPort(name, owner, _id), _slavePort(NULL)
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{
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}
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MasterPort::~MasterPort()
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{
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}
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void
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MasterPort::bind(BaseSlavePort& slave_port)
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{
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// bind on the level of the base ports
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_baseSlavePort = &slave_port;
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// also attempt to base the slave to the appropriate type
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SlavePort* cast_slave_port = dynamic_cast<SlavePort*>(&slave_port);
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// if this port is compatible, then proceed with the binding
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if (cast_slave_port != NULL) {
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// master port keeps track of the slave port
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_slavePort = cast_slave_port;
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// slave port also keeps track of master port
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_slavePort->bind(*this);
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} else {
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fatal("Master port %s cannot bind to %s\n", name(),
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slave_port.name());
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}
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}
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void
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MasterPort::unbind()
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{
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if (_slavePort == NULL)
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panic("Attempting to unbind master port %s that is not connected\n",
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name());
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_slavePort->unbind();
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_slavePort = NULL;
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_baseSlavePort = NULL;
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}
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AddrRangeList
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MasterPort::getAddrRanges() const
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{
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return _slavePort->getAddrRanges();
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}
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Tick
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MasterPort::sendAtomic(PacketPtr pkt)
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{
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assert(pkt->isRequest());
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return _slavePort->recvAtomic(pkt);
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}
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void
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MasterPort::sendFunctional(PacketPtr pkt)
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{
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assert(pkt->isRequest());
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return _slavePort->recvFunctional(pkt);
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}
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bool
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MasterPort::sendTimingReq(PacketPtr pkt)
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{
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assert(pkt->isRequest());
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return _slavePort->recvTimingReq(pkt);
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}
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bool
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MasterPort::sendTimingSnoopResp(PacketPtr pkt)
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{
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assert(pkt->isResponse());
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return _slavePort->recvTimingSnoopResp(pkt);
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}
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void
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MasterPort::sendRetryResp()
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{
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_slavePort->recvRespRetry();
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}
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void
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MasterPort::printAddr(Addr a)
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{
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Request req(a, 1, 0, Request::funcMasterId);
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Packet pkt(&req, MemCmd::PrintReq);
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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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/**
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* Slave port
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*/
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SlavePort::SlavePort(const std::string& name, MemObject* owner, PortID id)
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: BaseSlavePort(name, owner, id), _masterPort(NULL)
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{
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}
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SlavePort::~SlavePort()
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{
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}
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void
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SlavePort::unbind()
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{
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_baseMasterPort = NULL;
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_masterPort = NULL;
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}
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void
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SlavePort::bind(MasterPort& master_port)
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{
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_baseMasterPort = &master_port;
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_masterPort = &master_port;
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}
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Tick
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SlavePort::sendAtomicSnoop(PacketPtr pkt)
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{
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assert(pkt->isRequest());
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return _masterPort->recvAtomicSnoop(pkt);
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}
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void
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SlavePort::sendFunctionalSnoop(PacketPtr pkt)
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{
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assert(pkt->isRequest());
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return _masterPort->recvFunctionalSnoop(pkt);
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}
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bool
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SlavePort::sendTimingResp(PacketPtr pkt)
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{
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assert(pkt->isResponse());
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return _masterPort->recvTimingResp(pkt);
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}
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void
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SlavePort::sendTimingSnoopReq(PacketPtr pkt)
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{
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assert(pkt->isRequest());
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_masterPort->recvTimingSnoopReq(pkt);
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}
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void
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SlavePort::sendRetryReq()
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{
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_masterPort->recvReqRetry();
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}
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void
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SlavePort::sendRetrySnoopResp()
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{
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_masterPort->recvRetrySnoopResp();
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}
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