b22c0183cf
This change adds the source code for the PortTerminator SimObject. It could be used to connect request/response ports in the system that can not be connected to any other ports. This will prevent errors caused by orphan ports in the system. As an example if you have set up a cache hierarchy and do not want to test its performance in full system mode and want to use PyTrafficGen instead, your system will end up with an icache or walker ports that are not connected to anything. In this case, you can use a PortTerminator to connect the orphan ports in your system. Change-Id: I5e19cdd3ce064638ffabf29d29225eda77ffc146 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/51609 Tested-by: kokoro <noreply+kokoro@google.com> Reviewed-by: Jason Lowe-Power <power.jg@gmail.com> Maintainer: Jason Lowe-Power <power.jg@gmail.com>
57 lines
2.4 KiB
C++
57 lines
2.4 KiB
C++
/*
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* Copyright (c) 2021 The Regents of the University of California.
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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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#include "mem/port_terminator.hh"
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namespace gem5 {
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PortTerminator::PortTerminator(const PortTerminatorParams ¶ms):
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SimObject(params)
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{
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for (int i = 0; i < params.port_req_ports_connection_count; ++i) {
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reqPorts.emplace_back(name() + ".req_ports" + std::to_string(i), this);
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}
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for (int j = 0; j < params.port_resp_ports_connection_count; ++j) {
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reqPorts.emplace_back(name() + ".resp_ports" +
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std::to_string(j), this);
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}
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}
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Port &
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PortTerminator::getPort(const std::string &if_name, PortID idx)
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{
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if (if_name == "req_ports" && idx < reqPorts.size()) {
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return reqPorts[idx];
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} else if (if_name == "resp_ports" && idx < respPorts.size()) {
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return respPorts[idx];
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} else {
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return SimObject::getPort(if_name, idx);
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}
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}
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} |