timing.hh

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 * Authors: Ron Dreslinski
 *          Andreas Hansson
 *          William Wang
 */

#ifndef __MEM_GEM5_PROTOCOL_TIMING_HH__
#define __MEM_GEM5_PROTOCOL_TIMING_HH__

#include "mem/packet.hh"

class TimingResponseProtocol;

class TimingRequestProtocol
{
    friend class TimingResponseProtocol;

  protected:
    bool sendReq(TimingResponseProtocol *peer, PacketPtr pkt);

    bool trySend(TimingResponseProtocol *peer, PacketPtr pkt) const;

    bool sendSnoopResp(TimingResponseProtocol *peer, PacketPtr pkt);

    void sendRetryResp(TimingResponseProtocol *peer);

    virtual bool recvTimingResp(PacketPtr pkt) = 0;

    virtual void recvTimingSnoopReq(PacketPtr pkt) = 0;

    virtual void recvReqRetry() = 0;

    virtual void recvRetrySnoopResp() = 0;
};

class TimingResponseProtocol
{
    friend class TimingRequestProtocol;

  protected:
    bool sendResp(TimingRequestProtocol *peer, PacketPtr pkt);

    void sendSnoopReq(TimingRequestProtocol *peer, PacketPtr pkt);

    void sendRetryReq(TimingRequestProtocol *peer);

    void sendRetrySnoopResp(TimingRequestProtocol *peer);

    virtual bool recvTimingReq(PacketPtr pkt) = 0;

    virtual bool tryTiming(PacketPtr pkt) = 0;

    virtual bool recvTimingSnoopResp(PacketPtr pkt) = 0;

    virtual void recvRespRetry() = 0;
};

#endif //__MEM_GEM5_PROTOCOL_TIMING_HH__