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#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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