1 files changed, 98 insertions, 0 deletions
diff --git a/src/mem/ruby/network/garnet-flexible-pipeline/Router.hh b/src/mem/ruby/network/garnet-flexible-pipeline/Router.hh
new file mode 100644
index 000000000..ce7dd4a8f
--- /dev/null
+++ b/src/mem/ruby/network/garnet-flexible-pipeline/Router.hh
@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
+ * 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.
+ */
+
+/*
+ * Router.h
+ *
+ * Niket Agarwal, Princeton University
+ *
+ * */
+
+#ifndef ROUTER_H
+#define ROUTER_H
+
+#include "mem/ruby/network/garnet-fixed-pipeline/NetworkHeader.hh"
+#include "mem/ruby/network/garnet-flexible-pipeline/GarnetNetwork.hh"
+#include "mem/ruby/network/garnet-flexible-pipeline/FlexibleConsumer.hh"
+#include "mem/gems_common/PrioHeap.hh"
+#include "mem/ruby/network/garnet-flexible-pipeline/NetworkLink.hh"
+#include "mem/ruby/common/NetDest.hh"
+#include "mem/ruby/network/garnet-flexible-pipeline/flitBuffer.hh"
+#include "mem/ruby/network/garnet-flexible-pipeline/InVcState.hh"
+#include "mem/ruby/network/garnet-flexible-pipeline/OutVcState.hh"
+
+class VCarbiter;
+
+class Router : public FlexibleConsumer {
+public:
+        Router(int id, GarnetNetwork *network_ptr);
+
+        ~Router();
+
+        void addInPort(NetworkLink *in_link);
+        void addOutPort(NetworkLink *out_link, const NetDest& routing_table_entry, int link_weight);
+        void wakeup();
+        void request_vc(int in_vc, int in_port, NetDest destination, Time request_time);
+        bool isBufferNotFull(int vc, int inport);
+        void grant_vc(int out_port, int vc, Time grant_time);
+        void release_vc(int out_port, int vc, Time release_time);
+        void vc_arbitrate();
+
+        void printConfig(ostream& out) const;
+        void print(ostream& out) const;
+
+private:
+/***************Data Members******************/
+        int m_id;
+        int m_virtual_networks, m_num_vcs, m_vc_per_vnet;
+        GarnetNetwork *m_net_ptr;
+        Vector<int > m_vc_round_robin; // For scheduling of out source queues
+        int m_round_robin_inport, m_round_robin_start; // for vc arbitration
+        Vector<int > m_round_robin_invc; // For every outport. for vc arbitration
+
+        Vector<Vector<flitBuffer *> > m_router_buffers; // These are essentially output buffers
+        Vector<flitBuffer *> m_out_src_queue; // These are source queues for the output link
+        Vector<NetworkLink *> m_in_link;
+        Vector<NetworkLink *> m_out_link;
+        Vector<Vector<InVcState * > > m_in_vc_state;
+        Vector<Vector<OutVcState * > > m_out_vc_state;
+        Vector<NetDest> m_routing_table;
+        Vector<int > m_link_weights;
+        VCarbiter *m_vc_arbiter;
+
+/*********** Private methods *************/
+        int getRoute(NetDest destination);
+        Vector<int > get_valid_vcs(int invc);
+        void routeCompute(flit *m_flit, int inport);
+        void checkReschedule();
+        void check_arbiter_reschedule();
+        void scheduleOutputLinks();
+};
+
+#endif
+