| /* |
| * Copyright (c) 2008 Princeton University |
| * 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: Niket Agarwal |
| */ |
| |
| #include "mem/ruby/network/garnet/flexible-pipeline/GarnetNetwork.hh" |
| #include "mem/ruby/network/garnet/flexible-pipeline/NetworkLink.hh" |
| |
| NetworkLink::NetworkLink(const Params *p) |
| : ClockedObject(p), FlexibleConsumer(this) |
| { |
| linkBuffer = new flitBuffer(); |
| m_in_port = 0; |
| m_out_port = 0; |
| m_link_utilized = 0; |
| m_latency = p->link_latency; |
| m_id = p->link_id; |
| |
| int num_net = p->virt_nets; |
| int num_vc = p->vcs_per_vnet; |
| m_vc_load.resize(num_net * num_vc); |
| |
| for (int i = 0; i < num_net * num_vc; i++) |
| m_vc_load[i] = 0; |
| } |
| |
| NetworkLink::~NetworkLink() |
| { |
| delete linkBuffer; |
| } |
| |
| void |
| NetworkLink::setLinkConsumer(FlexibleConsumer *consumer) |
| { |
| link_consumer = consumer; |
| } |
| |
| void |
| NetworkLink::setSourceQueue(flitBuffer *srcQueue) |
| { |
| link_srcQueue = srcQueue; |
| } |
| |
| void |
| NetworkLink::setSource(FlexibleConsumer *source) |
| { |
| link_source = source; |
| } |
| |
| void |
| NetworkLink::request_vc_link(int vc, NetDest destination, Cycles request_time) |
| { |
| link_consumer->request_vc(vc, m_in_port, destination, request_time); |
| } |
| |
| bool |
| NetworkLink::isBufferNotFull_link(int vc) |
| { |
| return link_consumer->isBufferNotFull(vc, m_in_port); |
| } |
| |
| void |
| NetworkLink::grant_vc_link(int vc, Cycles grant_time) |
| { |
| link_source->grant_vc(m_out_port, vc, grant_time); |
| } |
| |
| void |
| NetworkLink::release_vc_link(int vc, Cycles release_time) |
| { |
| link_source->release_vc(m_out_port, vc, release_time); |
| } |
| |
| bool |
| NetworkLink::isReady() |
| { |
| return linkBuffer->isReady(curCycle()); |
| } |
| |
| void |
| NetworkLink::setInPort(int port) |
| { |
| m_in_port = port; |
| } |
| |
| void |
| NetworkLink::setOutPort(int port) |
| { |
| m_out_port = port; |
| } |
| |
| void |
| NetworkLink::wakeup() |
| { |
| if (!link_srcQueue->isReady(curCycle())) |
| return; |
| |
| flit *t_flit = link_srcQueue->getTopFlit(); |
| t_flit->set_time(curCycle() + m_latency); |
| linkBuffer->insert(t_flit); |
| link_consumer->scheduleEventAbsolute(clockEdge(m_latency)); |
| |
| m_link_utilized++; |
| m_vc_load[t_flit->get_vc()]++; |
| } |
| |
| flit* |
| NetworkLink::peekLink() |
| { |
| return linkBuffer->peekTopFlit(); |
| } |
| |
| flit* |
| NetworkLink::consumeLink() |
| { |
| return linkBuffer->getTopFlit(); |
| } |
| |
| bool |
| NetworkLink::functionalRead(Packet *pkt) |
| { |
| return linkBuffer->functionalRead(pkt); |
| } |
| |
| uint32_t |
| NetworkLink::functionalWrite(Packet *pkt) |
| { |
| return linkBuffer->functionalWrite(pkt); |
| } |
| |
| NetworkLink * |
| NetworkLinkParams::create() |
| { |
| return new NetworkLink(this); |
| } |