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/interconnect_interface.hpp | 131 +++++++++++++++++++++++++++++++
 1 file changed, 131 insertions(+)
 create mode 100644 src/intersim2/interconnect_interface.hpp

(limited to 'src/intersim2/interconnect_interface.hpp')

diff --git a/src/intersim2/interconnect_interface.hpp b/src/intersim2/interconnect_interface.hpp
new file mode 100644
index 0000000..6ce4418
--- /dev/null
+++ b/src/intersim2/interconnect_interface.hpp
@@ -0,0 +1,131 @@
+// Copyright (c) 2009-2013, Tor M. Aamodt, Dongdong Li, Ali Bakhoda
+// The University of British Columbia
+// 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 University of British Columbia 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 HOLDER 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 _INTERCONNECT_INTERFACE_HPP_
+#define _INTERCONNECT_INTERFACE_HPP_
+
+#include <vector>
+#include <queue>
+#include <iostream>
+#include <map>
+using namespace std;
+
+
+// Do not use #include since it will not compile in icnt_wrapper or change the makefile to make it
+class Flit;
+class GPUTrafficManager;
+class IntersimConfig;
+class Network;
+class Stats;
+
+//TODO: fixed_lat_icnt, add class support? support for signle network
+
+class InterconnectInterface {
+public:
+  InterconnectInterface(const char* const config_file, unsigned int n_shader,  unsigned int n_mem);
+  virtual ~InterconnectInterface();
+  
+  //node side functions
+  void Init();
+  void Push(unsigned input_deviceID, unsigned output_deviceID, void* data, unsigned int size);
+  void* Pop(unsigned ouput_deviceID);
+  void Advance();
+  bool Busy() const;
+  bool HasBuffer(unsigned deviceID, unsigned int size) const;
+  void DisplayStats() const;
+  void DisplayOverallStats() const;
+  unsigned GetFlitSize() const;
+  
+  void DisplayState(FILE* fp) const;
+  
+  //booksim side functions
+  void WriteOutBuffer( int subnet, int output, Flit* flit );
+  void Transfer2BoundaryBuffer(int subnet, int output);
+  
+  int GetIcntTime() const;
+  
+  Stats* GetIcntStats(const string & name) const;
+  
+  Flit* GetEjectedFlit(int subnet, int node);
+  
+  
+private:
+  
+  class _BoundaryBufferItem {
+  public:
+    _BoundaryBufferItem():_packet_n(0) {}
+    inline unsigned Size(void) const { return _buffer.size(); }
+    inline bool HasPacket() const { return _packet_n; }
+    void* PopPacket();
+    void* TopPacket() const;
+    void PushFlitData(void* data,bool is_tail);
+    
+  private:
+    queue<void *> _buffer;
+    queue<bool> _tail_flag;
+    int _packet_n;
+  };
+  typedef queue<Flit*> _EjectionBufferItem;
+  
+  void _CreateBuffer( );
+  void _CreateNodeMap(int n_shader, int n_mem, int n_node, int use_map);
+  void _DisplayMap(int dim,int count);
+  
+  // size: [subnets][nodes][vcs]
+  vector<vector<vector<_BoundaryBufferItem> > > _boundary_buffer;
+  unsigned int _boundary_buffer_capacity;
+  // size: [subnets][nodes][vcs]
+  vector<vector<vector<_EjectionBufferItem> > > _ejection_buffer;
+  // size:[subnets][nodes]
+  vector<vector<queue<Flit* > > > _ejected_flit_queue;
+  
+  unsigned int _ejection_buffer_capacity;
+  unsigned int _input_buffer_capacity;
+  
+  vector<vector<int> > _round_robin_turn; //keep track of _boundary_buffer last used in icnt_pop
+  
+  GPUTrafficManager* _traffic_manager;
+  unsigned int _flit_size;
+  IntersimConfig* _icnt_config;
+  const int _n_shader, _n_mem;
+  vector<Network *> _net;
+  int _vcs;
+  int _subnets;
+  
+  //deviceID to icntID map
+  //deviceID : Starts from 0 for shaders and then continues until mem nodes
+  //which starts at location n_shader and then continues to n_shader+n_mem (last device)
+  map<int, int> _node_map;
+  
+  //icntID to deviceID map
+  map<int, int> _reverse_node_map;
+
+};
+
+#endif
+
+
-- 
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