From 8723b08dbf254bc436eac2b2ddf86efa02fc4274 Mon Sep 17 00:00:00 2001 From: Matthias Jung Date: Mon, 3 Aug 2015 23:08:40 -0500 Subject: misc: Coupling gem5 with SystemC TLM2.0 Transaction Level Modeling (TLM2.0) is widely used in industry for creating virtual platforms (IEEE 1666 SystemC). This patch contains a standard compliant implementation of an external gem5 port, that enables the usage of gem5 as a TLM initiator component in SystemC based virtual platforms. Both TLM coding paradigms loosely timed (b_transport) and aproximately timed (nb_transport) are supported. Compared to the original patch a TLM memory manager was added. Furthermore, the transaction object was removed and for each TLM payload a PacketPointer that points to the original gem5 packet is added as an TLM extension. For event handling single events are now created. Committed by: Nilay Vaish --- util/tlm/sc_ext.cc | 72 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 util/tlm/sc_ext.cc (limited to 'util/tlm/sc_ext.cc') diff --git a/util/tlm/sc_ext.cc b/util/tlm/sc_ext.cc new file mode 100644 index 000000000..ce7417e49 --- /dev/null +++ b/util/tlm/sc_ext.cc @@ -0,0 +1,72 @@ +/* + * Copyright (c) 2015, University of Kaiserslautern + * 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: + * Matthias Jung + */ + +#include "sc_ext.hh" + +using namespace tlm; + +gem5Extension::gem5Extension(PacketPtr packet) +{ + Packet = packet; +} + +gem5Extension& gem5Extension::getExtension(const tlm_generic_payload *payload) +{ + gem5Extension *result = NULL; + payload->get_extension(result); + sc_assert(result!=NULL); + return *result; +} + +gem5Extension& gem5Extension::getExtension(const tlm_generic_payload &payload) +{ + return gem5Extension::getExtension(&payload); +} + +PacketPtr gem5Extension::getPacket() +{ + return Packet; +} + +tlm_extension_base* gem5Extension::clone() const +{ + return new gem5Extension(Packet); +} + +void gem5Extension::copy_from(const tlm_extension_base& ext) +{ + const gem5Extension& cpyFrom = static_cast(ext); + Packet = cpyFrom.Packet; +} -- cgit v1.2.3