b5045005de
The current TLM bridge only provides a Slave Port that allows the gem5 world to send request to the SystemC world. This patch series refractors and cleans up the existing code, and adds a Master Port that allows the SystemC world to send requests to the gem5 world. This patch: * Implement 'pipe through' for gem5 Packets (see explanation below) Basically, this patch ensures that all transactions that originated in the gem5 world are converted back to the original packet when entering the gem5 world. So far, this only worked for packets that are responded to by a SyctemC component (e.g. when a gem5 CPU sends a request to a SystemC memory). By implementing the 'pipe through' this patch ensures, that packets that are responded to by a gem5 component (e.g. when a gem5 CPU sends a request to a gem5 memory via a SystemC interconnect) are handled properly. Reviewed at http://reviews.gem5.org/r/3796/ Signed-off-by: Jason Lowe-Power <jason@lowepower.com>
75 lines
2.4 KiB
C++
75 lines
2.4 KiB
C++
/*
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* Copyright (c) 2015, University of Kaiserslautern
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* Copyright (c) 2016, Dresden University of Technology (TU Dresden)
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER
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* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors:
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* Matthias Jung
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* Christian Menard
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*/
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#ifndef __SC_EXT_HH__
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#define __SC_EXT_HH__
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#include <systemc.h>
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#include <tlm.h>
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#include <iostream>
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#include "mem/packet.hh"
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namespace Gem5SystemC
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{
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class Gem5Extension: public tlm::tlm_extension<Gem5Extension>
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{
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public:
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Gem5Extension(PacketPtr packet);
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virtual tlm_extension_base* clone() const;
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virtual void copy_from(const tlm_extension_base& ext);
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static Gem5Extension&
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getExtension(const tlm::tlm_generic_payload *payload);
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static Gem5Extension&
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getExtension(const tlm::tlm_generic_payload &payload);
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PacketPtr getPacket();
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bool isPipeThrough() const { return pipeThrough; }
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void setPipeThrough() { pipeThrough = true; }
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private:
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PacketPtr Packet;
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bool pipeThrough;
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};
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}
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#endif
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