| /* |
| * Copyright (c) 2012,2015 ARM Limited |
| * All rights reserved |
| * |
| * The license below extends only to copyright in the software and shall |
| * not be construed as granting a license to any other intellectual |
| * property including but not limited to intellectual property relating |
| * to a hardware implementation of the functionality of the software |
| * licensed hereunder. You may use the software subject to the license |
| * terms below provided that you ensure that this notice is replicated |
| * unmodified and in its entirety in all distributions of the software, |
| * modified or unmodified, in source code or in binary form. |
| * |
| * Copyright (c) 2002-2005 The Regents of The University of Michigan |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer; |
| * redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution; |
| * neither the name of the copyright holders nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| * Authors: Steve Reinhardt |
| * Andreas Hansson |
| * William Wang |
| */ |
| |
| /** |
| * @file |
| * Port object definitions. |
| */ |
| #include "mem/port.hh" |
| |
| #include "base/trace.hh" |
| #include "mem/mem_object.hh" |
| |
| Port::Port(const std::string &_name, MemObject& _owner, PortID _id) |
| : portName(_name), id(_id), owner(_owner) |
| { |
| } |
| |
| Port::~Port() |
| { |
| } |
| |
| BaseMasterPort::BaseMasterPort(const std::string& name, MemObject* owner, |
| PortID _id) |
| : Port(name, *owner, _id), _baseSlavePort(NULL) |
| { |
| } |
| |
| BaseMasterPort::~BaseMasterPort() |
| { |
| } |
| |
| BaseSlavePort& |
| BaseMasterPort::getSlavePort() const |
| { |
| if (_baseSlavePort == NULL) |
| panic("Cannot getSlavePort on master port %s that is not connected\n", |
| name()); |
| |
| return *_baseSlavePort; |
| } |
| |
| bool |
| BaseMasterPort::isConnected() const |
| { |
| return _baseSlavePort != NULL; |
| } |
| |
| BaseSlavePort::BaseSlavePort(const std::string& name, MemObject* owner, |
| PortID _id) |
| : Port(name, *owner, _id), _baseMasterPort(NULL) |
| { |
| } |
| |
| BaseSlavePort::~BaseSlavePort() |
| { |
| } |
| |
| BaseMasterPort& |
| BaseSlavePort::getMasterPort() const |
| { |
| if (_baseMasterPort == NULL) |
| panic("Cannot getMasterPort on slave port %s that is not connected\n", |
| name()); |
| |
| return *_baseMasterPort; |
| } |
| |
| bool |
| BaseSlavePort::isConnected() const |
| { |
| return _baseMasterPort != NULL; |
| } |
| |
| /** |
| * Master port |
| */ |
| MasterPort::MasterPort(const std::string& name, MemObject* owner, PortID _id) |
| : BaseMasterPort(name, owner, _id), _slavePort(NULL) |
| { |
| } |
| |
| MasterPort::~MasterPort() |
| { |
| } |
| |
| void |
| MasterPort::bind(BaseSlavePort& slave_port) |
| { |
| // bind on the level of the base ports |
| _baseSlavePort = &slave_port; |
| |
| // also attempt to base the slave to the appropriate type |
| SlavePort* cast_slave_port = dynamic_cast<SlavePort*>(&slave_port); |
| |
| // if this port is compatible, then proceed with the binding |
| if (cast_slave_port != NULL) { |
| // master port keeps track of the slave port |
| _slavePort = cast_slave_port; |
| // slave port also keeps track of master port |
| _slavePort->bind(*this); |
| } else { |
| fatal("Master port %s cannot bind to %s\n", name(), |
| slave_port.name()); |
| } |
| } |
| |
| void |
| MasterPort::unbind() |
| { |
| if (_slavePort == NULL) |
| panic("Attempting to unbind master port %s that is not connected\n", |
| name()); |
| _slavePort->unbind(); |
| _slavePort = NULL; |
| _baseSlavePort = NULL; |
| } |
| |
| AddrRangeList |
| MasterPort::getAddrRanges() const |
| { |
| return _slavePort->getAddrRanges(); |
| } |
| |
| Tick |
| MasterPort::sendAtomic(PacketPtr pkt) |
| { |
| assert(pkt->isRequest()); |
| return _slavePort->recvAtomic(pkt); |
| } |
| |
| void |
| MasterPort::sendFunctional(PacketPtr pkt) |
| { |
| assert(pkt->isRequest()); |
| return _slavePort->recvFunctional(pkt); |
| } |
| |
| bool |
| MasterPort::sendTimingReq(PacketPtr pkt) |
| { |
| assert(pkt->isRequest()); |
| return _slavePort->recvTimingReq(pkt); |
| } |
| |
| bool |
| MasterPort::sendTimingSnoopResp(PacketPtr pkt) |
| { |
| assert(pkt->isResponse()); |
| return _slavePort->recvTimingSnoopResp(pkt); |
| } |
| |
| void |
| MasterPort::sendRetryResp() |
| { |
| _slavePort->recvRespRetry(); |
| } |
| |
| void |
| MasterPort::printAddr(Addr a) |
| { |
| Request req(a, 1, 0, Request::funcMasterId); |
| Packet pkt(&req, MemCmd::PrintReq); |
| Packet::PrintReqState prs(std::cerr); |
| pkt.senderState = &prs; |
| |
| sendFunctional(&pkt); |
| } |
| |
| /** |
| * Slave port |
| */ |
| SlavePort::SlavePort(const std::string& name, MemObject* owner, PortID id) |
| : BaseSlavePort(name, owner, id), _masterPort(NULL) |
| { |
| } |
| |
| SlavePort::~SlavePort() |
| { |
| } |
| |
| void |
| SlavePort::unbind() |
| { |
| _baseMasterPort = NULL; |
| _masterPort = NULL; |
| } |
| |
| void |
| SlavePort::bind(MasterPort& master_port) |
| { |
| _baseMasterPort = &master_port; |
| _masterPort = &master_port; |
| } |
| |
| Tick |
| SlavePort::sendAtomicSnoop(PacketPtr pkt) |
| { |
| assert(pkt->isRequest()); |
| return _masterPort->recvAtomicSnoop(pkt); |
| } |
| |
| void |
| SlavePort::sendFunctionalSnoop(PacketPtr pkt) |
| { |
| assert(pkt->isRequest()); |
| return _masterPort->recvFunctionalSnoop(pkt); |
| } |
| |
| bool |
| SlavePort::sendTimingResp(PacketPtr pkt) |
| { |
| assert(pkt->isResponse()); |
| return _masterPort->recvTimingResp(pkt); |
| } |
| |
| void |
| SlavePort::sendTimingSnoopReq(PacketPtr pkt) |
| { |
| assert(pkt->isRequest()); |
| _masterPort->recvTimingSnoopReq(pkt); |
| } |
| |
| void |
| SlavePort::sendRetryReq() |
| { |
| _masterPort->recvReqRetry(); |
| } |
| |
| void |
| SlavePort::sendRetrySnoopResp() |
| { |
| _masterPort->recvRetrySnoopResp(); |
| } |