From 69f2911e04ffb1b19eef1fafb8c040af271f656e Mon Sep 17 00:00:00 2001
From: Tor Aamodt <aamodt@ece.ubc.ca>
Date: Thu, 15 Jul 2010 18:09:46 -0800
Subject: creating branch for adding support for CUDA 3.x and Fermi

[git-p4: depot-paths = "//depot/gpgpu_sim_research/fermi/distribution/": change = 6829]
---
 src/intersim/event_router.hpp | 151 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 151 insertions(+)
 create mode 100644 src/intersim/event_router.hpp

(limited to 'src/intersim/event_router.hpp')

diff --git a/src/intersim/event_router.hpp b/src/intersim/event_router.hpp
new file mode 100644
index 0000000..91bc005
--- /dev/null
+++ b/src/intersim/event_router.hpp
@@ -0,0 +1,151 @@
+#ifndef _EVENT_ROUTER_HPP_
+#define _EVENT_ROUTER_HPP_
+
+#include <string>
+#include <queue>
+
+#include "module.hpp"
+#include "router.hpp"
+#include "vc.hpp"
+#include "arbiter.hpp"
+#include "routefunc.hpp"
+#include "outputset.hpp"
+#include "pipefifo.hpp"
+
+class EventNextVCState : public Module {
+public:
+   enum eNextVCState {
+      idle, busy, tail_pending
+   };
+
+   struct tWaiting {
+      int  input;
+      int  vc;
+      int  id;
+      int  pres;
+      bool watch;
+   };
+
+private:
+   int _buf_size;
+   int _vcs;
+
+   int *_credits;
+   int *_presence;
+   int *_input;
+   int *_inputVC;
+
+   list<tWaiting *> *_waiting;
+
+   eNextVCState *_state;
+
+   void _Init( const Configuration& config );
+
+public:
+   EventNextVCState() : Module() {}
+   void init( const Configuration& config );
+   EventNextVCState( const Configuration& config, 
+                     Module *parent, const string& name );
+   ~EventNextVCState( );
+
+   eNextVCState GetState( int vc ) const;
+   int GetPresence( int vc ) const;
+   int GetCredits( int vc ) const;
+   int GetInput( int vc ) const;
+   int GetInputVC( int vc ) const;
+
+   bool IsWaiting( int vc ) const;
+   bool IsInputWaiting( int vc, int w_input, int w_vc ) const;
+
+   void PushWaiting( int vc, tWaiting *w );
+   void IncrWaiting( int vc, int w_input, int w_vc );
+   tWaiting *PopWaiting( int vc );
+
+   void SetState( int vc, eNextVCState state );
+   void SetCredits( int vc, int value );
+   void SetPresence( int vc, int value );
+   void SetInput( int vc, int input );
+   void SetInputVC( int vc, int in_vc );
+};
+
+class EventRouter : public Router {
+   int _vcs;
+   int _vc_size;
+
+   int _vct;
+
+   VC  **_vc;
+
+   tRoutingFunction   _rf;
+
+   EventNextVCState *_output_state;
+
+   PipelineFIFO<Flit>   *_crossbar_pipe;
+   PipelineFIFO<Credit> *_credit_pipe;
+
+   queue<Flit *> *_input_buffer;
+   queue<Flit *> *_output_buffer;
+
+   queue<Credit *> *_in_cred_buffer;
+   queue<Credit *> *_out_cred_buffer;
+
+   struct tArrivalEvent {
+      int  input;
+      int  output;
+      int  src_vc;
+      int  dst_vc;
+      bool head;
+      bool tail;
+
+      int  id;    // debug
+      bool watch; // debug
+   };
+
+   PipelineFIFO<tArrivalEvent> *_arrival_pipe;
+   queue<tArrivalEvent *>      *_arrival_queue;
+   PriorityArbiter             **_arrival_arbiter;
+
+   struct tTransportEvent {
+      int  input;
+      int  src_vc;
+      int  dst_vc;
+
+      int  id;    // debug
+      bool watch; // debug
+   };
+
+   queue<tTransportEvent *> *_transport_queue;
+   PriorityArbiter          **_transport_arbiter;
+
+   bool *_transport_free;
+   int  *_transport_match;
+
+   void _ReceiveFlits( );
+   void _ReceiveCredits( );
+
+   void _IncomingFlits( );
+   void _ArrivalRequests( int input );
+   void _ArrivalArb( int output );
+   void _SendTransport( int input, int output, tArrivalEvent *aevt );
+   void _ProcessWaiting( int output, int out_vc );
+   void _TransportRequests( int output );
+   void _TransportArb( int input );
+   void _OutputQueuing( );
+
+   void _SendFlits( );
+   void _SendCredits( );
+
+public:
+   EventRouter( const Configuration& config,
+                Module *parent, string name, int id,
+                int inputs, int outputs );
+   virtual ~EventRouter( );
+
+   virtual void ReadInputs( );
+   virtual void InternalStep( );
+   virtual void WriteOutputs( );
+
+   void Display( ) const;
+};
+
+#endif
-- 
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