hetero_mem_ctrl.hh

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/*
 * Copyright (c) 2012-2020 ARM Limited
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 * property including but not limited to intellectual property relating
 * to a hardware implementation of the functionality of the software
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 * terms below provided that you ensure that this notice is replicated
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 * modified or unmodified, in source code or in binary form.
 *
 * Copyright (c) 2013 Amin Farmahini-Farahani
 * All rights reserved.
 *
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 * modification, are permitted provided that the following conditions are
 * met: redistributions of source code must retain the above copyright
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#ifndef __HETERO_MEM_CTRL_HH__
#define __HETERO_MEM_CTRL_HH__
 
#include "mem/mem_ctrl.hh"
#include "params/HeteroMemCtrl.hh"
 
namespace gem5
{
 
namespace memory
{
class HeteroMemCtrl : public MemCtrl
{
  private:

    NVMInterface* nvm;
    MemPacketQueue::iterator chooseNext(MemPacketQueue& queue,
                      Tick extra_col_delay, MemInterface* mem_int) override;
    virtual std::pair<MemPacketQueue::iterator, Tick>
    chooseNextFRFCFS(MemPacketQueue& queue, Tick extra_col_delay,
                    MemInterface* mem_intr) override;
    Tick doBurstAccess(MemPacket* mem_pkt, MemInterface* mem_int) override;
    Tick minReadToWriteDataGap() override;
    Tick minWriteToReadDataGap() override;
    AddrRangeList getAddrRanges() override;

    virtual Addr burstAlign(Addr addr, MemInterface* mem_intr) const override;

    virtual bool
    pktSizeCheck(MemPacket* mem_pkt, MemInterface* mem_intr) const override;
 
    virtual void processRespondEvent(MemInterface* mem_intr,
                        MemPacketQueue& queue,
                        EventFunctionWrapper& resp_event,
                        bool& retry_rd_req) override;

    virtual bool memBusy(MemInterface* mem_intr) override;

    virtual void nonDetermReads(MemInterface* mem_intr) override;

    virtual bool nvmWriteBlock(MemInterface* mem_intr) override;
 
  public:
 
    HeteroMemCtrl(const HeteroMemCtrlParams &p);
 
    bool allIntfDrained() const override;
    DrainState drain() override;
    void drainResume() override;
 
  protected:
 
    Tick recvAtomic(PacketPtr pkt) override;
    void recvFunctional(PacketPtr pkt) override;
    bool recvTimingReq(PacketPtr pkt) override;
 
};
 
} // namespace memory
} // namespace gem5
 
#endif //__HETERO_MEM_CTRL_HH__