genericVcAllocator.h

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/*
 * =====================================================================================
 *
 *       Filename:  genericVcAllocator.h
 *
 *    Description:  
 *
 *        Version:  1.0
 *        Created:  06/21/2010 03:22:20 PM
 *       Revision:  none
 *       Compiler:  gcc
 *
 *         Author:  Mitchelle Rasquinha (), mitchelle.rasquinha@gatech.edu
 *        Company:  Georgia Institute of Technology
 *
 * =====================================================================================
 */

#ifndef  _genericvcallocator_h_INC
#define  _genericvcallocator_h_INC

#include        "../interfaces/networkComponent.h"
#include        "../../../util/genericData.h"
#include        <algorithm>

using namespace std;

struct VCA_unit
{
    uint vc;
    uint out_port;
    uint in_port;
};
typedef struct VCA_unit VCA_unit;

class GenericVcAllocator
{
    public:
        /* ====================  LIFECYCLE     ======================================= */
        GenericVcAllocator ();                             /* \fn constructor */
        ~GenericVcAllocator ();                            /* \fn destructor */
        void setup(uint p, uint v);                        /* \fn Init. Set vcs and ports */
        bool request(uint out_port, uint out_vc, uint in_port, uint in_vc);            /* \fn Request output port allocation.
                                                            \param in_port: Requesting in_port
                                                            \param in_vc: Requesting in_vc.*/
        bool is_empty( void );                                   /* \fn Checks if the vca unit has requests */
        bool is_empty( uint i );                                   /* \fn Checks if the vca unit has requests for the ith row ( i=out_port*ports+out_vc) */
        void pick_winner( void );
        void set_request_matrix( void );
        void do_round_robin_arbitration ( void );
        void clear_winner( uint op, uint ovc, uint ip, uint ivc);                                   /* \fn Clear winner */
        void squash_requests( uint op, uint ovc, uint ip, uint ivc);
        string toString() const;        
        bool is_requested ( uint op, uint ovc, uint ip, uint ivc);
        vector < uint > current_winners;
        uint address;
        uint node_ip;

    private:
        uint ports;
        uint vcs;
        string name;
        vector < bool > done;
        vector < bool > locked;
        vector < uint > last_winner;
        vector < vector < bool > >requested;
        vector < vector < uint > >last_inport_winner;
        vector < vector < vector <short int > > > requestor_inport;

}; /* -----  end of class GenericVcAllocator  ----- */

#endif   /* ----- #ifndef _genericvcallocator_h_INC  ----- */