From dbe8892b761067c5c1e828f889a513ea085b044f Mon Sep 17 00:00:00 2001
From: Tushar Krishna <tushar@ece.gatech.edu>
Date: Thu, 6 Oct 2016 14:35:22 -0400
Subject: ruby: garnet2.0 Revamped version of garnet with more optimized
 single-cycle routers, more configurability, and cleaner code.

---
 src/mem/ruby/network/garnet2.0/NetworkInterface.hh | 108 +++++++++++++++++++++
 1 file changed, 108 insertions(+)
 create mode 100644 src/mem/ruby/network/garnet2.0/NetworkInterface.hh

(limited to 'src/mem/ruby/network/garnet2.0/NetworkInterface.hh')

diff --git a/src/mem/ruby/network/garnet2.0/NetworkInterface.hh b/src/mem/ruby/network/garnet2.0/NetworkInterface.hh
new file mode 100644
index 000000000..85e0145af
--- /dev/null
+++ b/src/mem/ruby/network/garnet2.0/NetworkInterface.hh
@@ -0,0 +1,108 @@
+/*
+ * 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_INTERFACE_HH__
+#define __MEM_RUBY_NETWORK_GARNET_NETWORK_INTERFACE_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/CreditLink.hh"
+#include "mem/ruby/network/garnet2.0/GarnetNetwork.hh"
+#include "mem/ruby/network/garnet2.0/NetworkLink.hh"
+#include "mem/ruby/network/garnet2.0/OutVcState.hh"
+#include "mem/ruby/slicc_interface/Message.hh"
+#include "params/GarnetNetworkInterface.hh"
+
+class MessageBuffer;
+class flitBuffer;
+
+class NetworkInterface : public ClockedObject, public Consumer
+{
+  public:
+    typedef GarnetNetworkInterfaceParams Params;
+    NetworkInterface(const Params *p);
+    ~NetworkInterface();
+
+    void init();
+
+    void addInPort(NetworkLink *in_link, CreditLink *credit_link);
+    void addOutPort(NetworkLink *out_link, CreditLink *credit_link,
+        SwitchID router_id);
+
+    void wakeup();
+    void addNode(std::vector<MessageBuffer *> &inNode,
+                 std::vector<MessageBuffer *> &outNode);
+
+    void print(std::ostream& out) const;
+    int get_vnet(int vc);
+    int get_router_id() { return m_router_id; }
+    void init_net_ptr(GarnetNetwork *net_ptr) { m_net_ptr = net_ptr; }
+
+    uint32_t functionalWrite(Packet *);
+
+  private:
+    GarnetNetwork *m_net_ptr;
+    const NodeID m_id;
+    const int m_virtual_networks, m_vc_per_vnet, m_num_vcs;
+    int m_router_id; // id of my router
+    std::vector<OutVcState *> m_out_vc_state;
+    std::vector<int> m_vc_allocator;
+    int m_vc_round_robin; // For round robin scheduling
+    flitBuffer *outFlitQueue; // For modeling link contention
+    flitBuffer *outCreditQueue;
+
+    NetworkLink *inNetLink;
+    NetworkLink *outNetLink;
+    CreditLink *inCreditLink;
+    CreditLink *outCreditLink;
+
+    // Input Flit Buffers
+    // The flit buffers which will serve the Consumer
+    std::vector<flitBuffer *>  m_ni_out_vcs;
+    std::vector<Cycles> m_ni_out_vcs_enqueue_time;
+
+    // The Message buffers that takes messages from the protocol
+    std::vector<MessageBuffer *> inNode_ptr;
+    // The Message buffers that provides messages to the protocol
+    std::vector<MessageBuffer *> outNode_ptr;
+
+    bool flitisizeMessage(MsgPtr msg_ptr, int vnet);
+    int calculateVC(int vnet);
+    void scheduleOutputLink();
+    void checkReschedule();
+};
+
+#endif // __MEM_RUBY_NETWORK_GARNET_NETWORK_INTERFACE_HH__
-- 
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