00cd307b13
Add a namespace encapsulating all garnet files. GarnetSyntheticTraffic, from cpu/testers/garnet_synthetic_traffic/GarnetSyntheticTraffic.hh has not been added to this namespace. Change-Id: I5304ad3130100ba325e35e20883ee9286f51a75a Issued-on: https://gem5.atlassian.net/browse/GEM5-987 Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br> Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/47306 Tested-by: kokoro <noreply+kokoro@google.com> Reviewed-by: Srikant Bharadwaj <srikant.bharadwaj@amd.com> Reviewed-by: Jason Lowe-Power <power.jg@gmail.com> Maintainer: Srikant Bharadwaj <srikant.bharadwaj@amd.com> Maintainer: Jason Lowe-Power <power.jg@gmail.com>
111 lines
3.5 KiB
C++
111 lines
3.5 KiB
C++
/*
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* Copyright (c) 2020 Inria
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* Copyright (c) 2016 Georgia Institute of Technology
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* Copyright (c) 2008 Princeton University
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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/ruby/network/garnet/CrossbarSwitch.hh"
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#include "debug/RubyNetwork.hh"
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#include "mem/ruby/network/garnet/OutputUnit.hh"
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#include "mem/ruby/network/garnet/Router.hh"
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namespace gem5
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{
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namespace garnet
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{
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CrossbarSwitch::CrossbarSwitch(Router *router)
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: Consumer(router), m_router(router), m_num_vcs(m_router->get_num_vcs()),
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m_crossbar_activity(0), switchBuffers(0)
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{
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}
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void
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CrossbarSwitch::init()
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{
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switchBuffers.resize(m_router->get_num_inports());
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}
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/*
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* The wakeup function of the CrossbarSwitch loops through all input ports,
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* and sends the winning flit (from SA) out of its output port on to the
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* output link. The output link is scheduled for wakeup in the next cycle.
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*/
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void
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CrossbarSwitch::wakeup()
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{
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DPRINTF(RubyNetwork, "CrossbarSwitch at Router %d woke up "
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"at time: %lld\n",
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m_router->get_id(), m_router->curCycle());
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for (auto& switch_buffer : switchBuffers) {
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if (!switch_buffer.isReady(curTick())) {
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continue;
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}
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flit *t_flit = switch_buffer.peekTopFlit();
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if (t_flit->is_stage(ST_, curTick())) {
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int outport = t_flit->get_outport();
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// flit performs LT_ in the next cycle
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t_flit->advance_stage(LT_, m_router->clockEdge(Cycles(1)));
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t_flit->set_time(m_router->clockEdge(Cycles(1)));
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// This will take care of waking up the Network Link
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// in the next cycle
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m_router->getOutputUnit(outport)->insert_flit(t_flit);
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switch_buffer.getTopFlit();
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m_crossbar_activity++;
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}
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}
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}
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uint32_t
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CrossbarSwitch::functionalWrite(Packet *pkt)
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{
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uint32_t num_functional_writes = 0;
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for (auto& switch_buffer : switchBuffers) {
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num_functional_writes += switch_buffer.functionalWrite(pkt);
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}
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return num_functional_writes;
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}
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void
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CrossbarSwitch::resetStats()
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{
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m_crossbar_activity = 0;
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}
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} // namespace garnet
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} // namespace gem5
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