From 7f49fe9feb174d34efc2a011bad79b38522a360b Mon Sep 17 00:00:00 2001
From: Dongdong Li <qqlddg@gmail.com>
Date: Thu, 8 Aug 2013 00:15:58 -0800
Subject: Intesim2 Integration Details: See Review 80001
 https://gpgpu-sim-code-review.appspot.com/80001/

[git-p4: depot-paths = "//depot/gpgpu_sim_research/fermi/distribution/": change = 16747]
---
 src/intersim2/routers/chaos_router.hpp | 132 +++++++++++++++++++++++++++++++++
 1 file changed, 132 insertions(+)
 create mode 100644 src/intersim2/routers/chaos_router.hpp

(limited to 'src/intersim2/routers/chaos_router.hpp')

diff --git a/src/intersim2/routers/chaos_router.hpp b/src/intersim2/routers/chaos_router.hpp
new file mode 100644
index 0000000..df843ff
--- /dev/null
+++ b/src/intersim2/routers/chaos_router.hpp
@@ -0,0 +1,132 @@
+// $Id: chaos_router.hpp 5188 2012-08-30 00:31:31Z dub $
+
+/*
+ Copyright (c) 2007-2012, Trustees of The Leland Stanford Junior 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.
+
+ 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.
+*/
+
+#ifndef _CHAOS_ROUTER_HPP_
+#define _CHAOS_ROUTER_HPP_
+
+#include <string>
+#include <queue>
+#include <vector>
+
+#include "module.hpp"
+#include "router.hpp"
+#include "allocator.hpp"
+#include "routefunc.hpp"
+#include "outputset.hpp"
+#include "buffer_state.hpp"
+#include "pipefifo.hpp"
+#include "vc.hpp"
+
+class ChaosRouter : public Router {
+
+  tRoutingFunction   _rf;
+
+  vector<OutputSet*> _input_route;
+  vector<OutputSet*> _mq_route;
+
+  enum eQState {
+    empty,         //            input avail
+    filling,       //    >**H    ready to send
+    full,          //  T****H    ready to send
+    leaving,       //    T***>   input avail
+    cut_through,   //    >***>
+    shared         // >**HT**>
+  };
+
+  PipelineFIFO<Flit>   *_crossbar_pipe;
+
+  int _multi_queue_size;
+  int _buffer_size;
+
+  vector<queue<Flit *> > _input_frame;
+  vector<queue<Flit *> > _output_frame;
+  vector<queue<Flit *> > _multi_queue;
+
+  vector<int> _next_queue_cnt;
+
+  vector<queue<Credit *> > _credit_queue;
+
+  vector<eQState> _input_state;
+  vector<eQState> _multi_state;
+
+  vector<int> _input_output_match;
+  vector<int> _input_mq_match;
+  vector<int> _multi_match;
+
+  vector<int> _mq_age;
+
+  vector<bool> _output_matched;
+  vector<bool> _mq_matched;
+
+  int _cur_channel;
+  int _read_stall;
+
+  bool _IsInjectionChan( int chan ) const;
+  bool _IsEjectionChan( int chan ) const;
+
+  bool _InputReady( int input ) const;
+  bool _OutputFull( int out ) const;
+  bool _OutputAvail( int out ) const;
+  bool _MultiQueueFull( int mq ) const;
+
+  int  _InputForOutput( int output ) const;
+  int  _MultiQueueForOutput( int output ) const;
+  int  _FindAvailMultiQueue( ) const;
+
+  void _NextInterestingChannel( );
+  void _OutputAdvance( );
+  void _SendFlits( );
+  void _SendCredits( );
+
+  virtual void _InternalStep( );
+
+public:
+  ChaosRouter( const Configuration& config,
+	    Module *parent, const string & name, int id,
+	    int inputs, int outputs );
+
+  virtual ~ChaosRouter( );
+
+  virtual void ReadInputs( );
+  virtual void WriteOutputs( );
+
+  virtual int GetUsedCredit(int out) const {return 0;}
+  virtual int GetBufferOccupancy(int i) const {return 0;}
+
+#ifdef TRACK_BUFFERS
+  virtual int GetUsedCreditForClass(int output, int cl) const {return 0;}
+  virtual int GetBufferOccupancyForClass(int input, int cl) const {return 0;}
+#endif
+
+  virtual vector<int> UsedCredits() const { return vector<int>(); }
+  virtual vector<int> FreeCredits() const { return vector<int>(); }
+  virtual vector<int> MaxCredits() const { return vector<int>(); }
+
+  void Display( ostream & os = cout ) const;
+};
+
+#endif
-- 
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