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/*
* Copyright 2022 Google, LLC.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __MEM_THREAD_BRIDGE_HH__
#define __MEM_THREAD_BRIDGE_HH__
#include "mem/port.hh"
#include "params/ThreadBridge.hh"
#include "sim/sim_object.hh"
namespace gem5
{
class ThreadBridge : public SimObject
{
public:
explicit ThreadBridge(const ThreadBridgeParams &p);
Port &getPort(const std::string &if_name,
PortID idx = InvalidPortID) override;
private:
class IncomingPort : public ResponsePort
{
public:
IncomingPort(const std::string &name, ThreadBridge &device);
AddrRangeList getAddrRanges() const override;
// TimingResponseProtocol
bool recvTimingReq(PacketPtr pkt) override;
void recvRespRetry() override;
// AtomicResponseProtocol
Tick recvAtomic(PacketPtr pkt) override;
// FunctionalResponseProtocol
void recvFunctional(PacketPtr pkt) override;
private:
ThreadBridge &device_;
};
class OutgoingPort : public RequestPort
{
public:
OutgoingPort(const std::string &name, ThreadBridge &device);
void recvRangeChange() override;
// TimingRequestProtocol
bool recvTimingResp(PacketPtr pkt) override;
void recvReqRetry() override;
private:
ThreadBridge &device_;
};
IncomingPort in_port_;
OutgoingPort out_port_;
};
} // namespace gem5
#endif // __MEM_THREAD_BRIDGE_HH__