NetworkBridge.hh

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 * Copyright (c) 2020 Advanced Micro Devices, Inc.
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#ifndef __MEM_RUBY_NETWORK_GARNET_0_NETWORK_BRIDGE_HH__
#define __MEM_RUBY_NETWORK_GARNET_0_NETWORK_BRIDGE_HH__
 
#include <iostream>
#include <queue>
#include <vector>
 
#include "mem/ruby/common/Consumer.hh"
#include "mem/ruby/network/garnet/CommonTypes.hh"
#include "mem/ruby/network/garnet/CreditLink.hh"
#include "mem/ruby/network/garnet/GarnetLink.hh"
#include "mem/ruby/network/garnet/NetworkLink.hh"
#include "mem/ruby/network/garnet/flitBuffer.hh"
#include "params/NetworkBridge.hh"
 
namespace gem5
{
 
namespace ruby
{
 
namespace garnet
{
 
class GarnetNetwork;
 
class NetworkBridge: public CreditLink
{
  public:
    typedef NetworkBridgeParams Params;
    NetworkBridge(const Params &p);
    ~NetworkBridge();
 
    void initBridge(NetworkBridge *coBrid, bool cdc_en, bool serdes_en);
 
    void wakeup();
    void neutralize(int vc, int eCredit);
 
    void scheduleFlit(flit *t_flit, Cycles latency);
    void flitisizeAndSend(flit *t_flit);
    void setVcsPerVnet(uint32_t consumerVcs);
 
  protected:
    // Pointer to co-existing bridge
    // CreditBridge for Network Bridge and vice versa
    NetworkBridge *coBridge;
 
    // Link connected toBridge
    // could be a source or destination
    // depending on mType
    NetworkLink *nLink;
 
    // CDC enable/disable
    bool enCdc;
    // SerDes enable/disable
    bool enSerDes;
 
    // Type of Bridge
    int mType;
 
    Cycles cdcLatency;
    Cycles serDesLatency;
 
    Tick lastScheduledAt;
 
    // Used by Credit Deserializer
    std::vector<int> lenBuffer;
    std::vector<int> sizeSent;
    std::vector<int> flitsSent;
    std::vector<std::queue<int>> extraCredit;
 
};
 
} // namespace garnet
} // namespace ruby
} // namespace gem5
 
#endif // __MEM_RUBY_NETWORK_GARNET_0_NETWORK_BRIDGE_HH__