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/*
* Copyright 2019 Google, Inc.
*
* 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,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* 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.
*
* Copyright (c) 2016, Dresden University of Technology (TU Dresden)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. 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.
*
* 3. Neither the name of the copyright holder 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 HOLDER
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 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.
*
* Authors: Gabe Black
* Christian Menard
*/
#ifndef __SYSTEMC_TLM_BRIDGE_TLM_TO_GEM5_HH__
#define __SYSTEMC_TLM_BRIDGE_TLM_TO_GEM5_HH__
#include "mem/port.hh"
#include "params/TlmToGem5BridgeBase.hh"
#include "systemc/ext/core/sc_module.hh"
#include "systemc/ext/core/sc_module_name.hh"
#include "systemc/ext/tlm_core/2/generic_payload/gp.hh"
#include "systemc/ext/tlm_utils/peq_with_cb_and_phase.h"
#include "systemc/ext/tlm_utils/simple_target_socket.h"
#include "systemc/tlm_bridge/sc_ext.hh"
#include "systemc/tlm_port_wrapper.hh"
namespace sc_gem5
{
class TlmToGem5BridgeBase : public sc_core::sc_module
{
protected:
using sc_core::sc_module::sc_module;
};
PacketPtr payload2packet(tlm::tlm_generic_payload &trans);
template <unsigned int BITWIDTH>
class TlmToGem5Bridge : public TlmToGem5BridgeBase
{
private:
struct TlmSenderState : public Packet::SenderState
{
tlm::tlm_generic_payload &trans;
TlmSenderState(tlm::tlm_generic_payload &trans) : trans(trans) {}
};
class BridgeMasterPort : public MasterPort
{
protected:
TlmToGem5Bridge<BITWIDTH> &bridge;
bool
recvTimingResp(PacketPtr pkt) override
{
return bridge.recvTimingResp(pkt);
}
void recvReqRetry() override { bridge.recvReqRetry(); }
void recvRangeChange() override { bridge.recvRangeChange(); }
public:
BridgeMasterPort(const std::string &name_,
TlmToGem5Bridge<BITWIDTH> &bridge_) :
MasterPort(name_, nullptr), bridge(bridge_)
{}
};
tlm_utils::peq_with_cb_and_phase<TlmToGem5Bridge<BITWIDTH>> peq;
bool waitForRetry;
tlm::tlm_generic_payload *pendingRequest;
PacketPtr pendingPacket;
bool needToSendRetry;
bool responseInProgress;
BridgeMasterPort bmp;
tlm_utils::simple_target_socket<
TlmToGem5Bridge<BITWIDTH>, BITWIDTH> socket;
sc_gem5::TlmTargetWrapper<BITWIDTH> wrapper;
System *system;
void sendEndReq(tlm::tlm_generic_payload &trans);
void sendBeginResp(tlm::tlm_generic_payload &trans,
sc_core::sc_time &delay);
void handleBeginReq(tlm::tlm_generic_payload &trans);
void handleEndResp(tlm::tlm_generic_payload &trans);
void destroyPacket(PacketPtr pkt);
void checkTransaction(tlm::tlm_generic_payload &trans);
void invalidateDmi(const ::MemBackdoor &backdoor);
protected:
// payload event call back
void peq_cb(tlm::tlm_generic_payload &trans, const tlm::tlm_phase &phase);
// The TLM target interface
tlm::tlm_sync_enum nb_transport_fw(tlm::tlm_generic_payload &trans,
tlm::tlm_phase &phase,
sc_core::sc_time &t);
void b_transport(tlm::tlm_generic_payload &trans, sc_core::sc_time &t);
unsigned int transport_dbg(tlm::tlm_generic_payload &trans);
bool get_direct_mem_ptr(tlm::tlm_generic_payload &trans,
tlm::tlm_dmi &dmi_data);
// Gem5 port interface.
bool recvTimingResp(PacketPtr pkt);
void recvReqRetry();
void recvRangeChange();
public:
::Port &gem5_getPort(const std::string &if_name, int idx=-1) override;
typedef TlmToGem5BridgeBaseParams Params;
TlmToGem5Bridge(Params *p, const sc_core::sc_module_name &mn);
tlm_utils::simple_target_socket<TlmToGem5Bridge<BITWIDTH>, BITWIDTH> &
getSocket()
{
return socket;
}
void before_end_of_elaboration() override;
const MasterID masterId;
};
} // namespace sc_gem5
#endif // __SYSTEMC_TLM_BRIDGE_TLM_TO_GEM5_HH__
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