7bc9b0175f
Enable a gem5 system to be an SST::Component.
This change includes,
- SST::gem5Component: responsible for,
- initializing the Python environment for gem5
- instantiating gem5 SimObjects
- connecting SST::SSTResponderSubComponent to
gem5::OutgoingRequestBridge
- hanlding the gem5 event queue (no thread-synchronization)
- handling executing gem5 events
- SST::SSTResponderSubComponent: responsible for,
- receiving gem5 requests and sending the requests to
memory.
- sending responses to the corresponding
gem5::OutgoingRequestBridge.
- SST::SSTResponder: owned by SSTResponderSubComponent, the
actual actor that sends gem5's requests to memory.
- gem5::OutgoingRequestBridge: receives the requests from
gem5 and sends them to SST. This SimObject allows the initialization
requests to be cached and the receiver could query the
initialization data later on.
- gem5::SSTResponderInterface: the interface specifying how SST
communicates with gem5.
- A working example of a gem5/SST setup.
More information is available at ext/sst/README.md.
For installation instructions, please refer to ext/sst/INSTALL.md.
Change-Id: I6b81260ef825415bcfe72b8a078854f4c94de782
Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/50468
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
75 lines
2.7 KiB
C++
75 lines
2.7 KiB
C++
// Copyright (c) 2021 The Regents of the University of California
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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: redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer;
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// 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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// neither the name of the copyright holders 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
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef __SST_RESPONDER_HH__
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#define __SST_RESPONDER_HH__
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#define TRACING_ON 0
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#include <string>
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#include <vector>
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#include <sst/core/sst_config.h>
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#include <sst/core/component.h>
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#include <sst/core/simulation.h>
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#include <sst/core/interfaces/stringEvent.h>
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#include <sst/core/interfaces/simpleMem.h>
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#include <sst/core/eli/elementinfo.h>
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#include <sst/core/link.h>
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#include <sst/elements/memHierarchy/memEvent.h>
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#include <sst/elements/memHierarchy/memTypes.h>
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#include <sst/elements/memHierarchy/util.h>
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// from gem5
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#include <sim/sim_object.hh>
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#include <sst/outgoing_request_bridge.hh>
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#include <sst/sst_responder_interface.hh>
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#include "sst_responder_subcomponent.hh"
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class SSTResponderSubComponent;
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class SSTResponder: public gem5::SSTResponderInterface
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{
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private:
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SSTResponderSubComponent* owner;
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SST::Output* output;
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public:
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SSTResponder(SSTResponderSubComponent* owner_);
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~SSTResponder() override;
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void setOutputStream(SST::Output* output_);
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bool handleRecvTimingReq(gem5::PacketPtr pkt) override;
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void handleRecvRespRetry() override;
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void handleRecvFunctional(gem5::PacketPtr pkt) override;
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};
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#endif // __SST_RESPONDER_HH__
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