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+/*
+ * Copyright (c) 2008 Princeton University
+ * Copyright (c) 2016 Georgia Institute of Technology
+ * 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
+ * Tushar Krishna
+ */
+
+
+#ifndef __MEM_RUBY_NETWORK_GARNET_NETWORK_LINK_HH__
+#define __MEM_RUBY_NETWORK_GARNET_NETWORK_LINK_HH__
+
+#include <iostream>
+#include <vector>
+
+#include "mem/ruby/common/Consumer.hh"
+#include "mem/ruby/network/garnet2.0/CommonTypes.hh"
+#include "mem/ruby/network/garnet2.0/flitBuffer.hh"
+#include "params/NetworkLink.hh"
+#include "sim/clocked_object.hh"
+
+class GarnetNetwork;
+
+class NetworkLink : public ClockedObject, public Consumer
+{
+ public:
+ typedef NetworkLinkParams Params;
+ NetworkLink(const Params *p);
+ ~NetworkLink();
+
+ void setLinkConsumer(Consumer *consumer);
+ void setSourceQueue(flitBuffer *srcQueue);
+ void setType(link_type type) { m_type = type; }
+ link_type getType() { return m_type; }
+ void print(std::ostream& out) const {}
+ int get_id() const { return m_id; }
+ void wakeup();
+
+ unsigned int getLinkUtilization() const { return m_link_utilized; }
+ const std::vector<unsigned int> & getVcLoad() const { return m_vc_load; }
+
+ inline bool isReady(Cycles curTime)
+ { return linkBuffer->isReady(curTime); }
+
+ inline flit* peekLink() { return linkBuffer->peekTopFlit(); }
+ inline flit* consumeLink() { return linkBuffer->getTopFlit(); }
+
+ uint32_t functionalWrite(Packet *);
+
+ private:
+ const int m_id;
+ link_type m_type;
+ const Cycles m_latency;
+
+ flitBuffer *linkBuffer;
+ Consumer *link_consumer;
+ flitBuffer *link_srcQueue;
+
+ // Statistical variables
+ unsigned int m_link_utilized;
+ std::vector<unsigned int> m_vc_load;
+};
+
+#endif // __MEM_RUBY_NETWORK_GARNET_NETWORK_LINK_HH__