a309c2f343
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: * Add callbacks for the Gem5SimControl that are called at before and * after simulate() Reviewed at http://reviews.gem5.org/r/3799/ Signed-off-by: Jason Lowe-Power <jason@lowepower.com>
129 lines
4.6 KiB
C++
129 lines
4.6 KiB
C++
/*
|
|
* Copyright (c) 2015, University of Kaiserslautern
|
|
* 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: Matthias Jung
|
|
* Christian Menard
|
|
*/
|
|
|
|
#ifndef __SC_SIM_CONTROL_HH__
|
|
#define __SC_SIM_CONTROL_HH__
|
|
|
|
#include <tlm_utils/simple_target_socket.h>
|
|
|
|
#include <systemc>
|
|
#include <tlm>
|
|
|
|
#include "sc_logger.hh"
|
|
#include "sc_module.hh"
|
|
#include "sim/cxx_manager.hh"
|
|
#include "sim/system.hh"
|
|
#include "sim_control_if.hh"
|
|
|
|
namespace Gem5SystemC
|
|
{
|
|
|
|
/**
|
|
* This is the central SystemC module that orchestrates the gem5 simulation.
|
|
*
|
|
* The module is responsible for loading the configuration file, setting up and
|
|
* maintaining the event queues, as well as starting and ending the simulation.
|
|
* While it is mandatory to have one instance of this class for running a gem5
|
|
* simulation in SystemC, it is not allowed to have multiple instances!
|
|
*/
|
|
class Gem5SimControl : public Module, public Gem5SimControlInterface
|
|
{
|
|
protected:
|
|
CxxConfigManager* config_manager;
|
|
Gem5SystemC::Logger logger;
|
|
|
|
Tick simulationEnd;
|
|
|
|
/*
|
|
* Keep track of the slave and master ports that are created by gem5
|
|
* according to the config file.
|
|
*/
|
|
std::map<const std::string, SCSlavePort*> slavePorts;
|
|
std::map<const std::string, SCMasterPort*> masterPorts;
|
|
|
|
/// Pointer to a previously created instance.
|
|
static Gem5SimControl* instance;
|
|
|
|
/** A callback that is called from the run thread before gem5 simulation is
|
|
* started.
|
|
*
|
|
* A derived class may use this to perform any additional initializations
|
|
* prior simulation.
|
|
*/
|
|
virtual void beforeSimulate() {}
|
|
|
|
/** A callback that is called from the run thread after gem5 simulation
|
|
* completed.
|
|
*
|
|
* A derived class may use this to perform any additional tasks after gem5
|
|
* exits. For instance, a derived class could use this to call sc_stop().
|
|
*/
|
|
virtual void afterSimulate() {}
|
|
|
|
public:
|
|
SC_HAS_PROCESS(Gem5SimControl);
|
|
|
|
/**
|
|
* Constructor.
|
|
*
|
|
* This class has a public constructor although the class is actually a
|
|
* singleton. The public constructor is required to ensure compatibility
|
|
* to external SystemC based tools. For the same reason, the constructor
|
|
* parameters are basic types (int, string).
|
|
*
|
|
* @param configFile location of the gem5 configuration file
|
|
* @param simulationEnd number of ticks to simulate
|
|
* @param gem5DebugFlags a space separated list of gem5 debug flags to be
|
|
* set, a prepended '-' clears the flag
|
|
*/
|
|
Gem5SimControl(sc_core::sc_module_name name,
|
|
const std::string& configFile,
|
|
uint64_t simulationEnd,
|
|
const std::string& gem5DebugFlags);
|
|
|
|
void registerSlavePort(const std::string& name, SCSlavePort* port);
|
|
void registerMasterPort(const std::string& name, SCMasterPort* port);
|
|
SCSlavePort* getSlavePort(const std::string& name) override;
|
|
SCMasterPort* getMasterPort(const std::string& name) override;
|
|
|
|
void end_of_elaboration();
|
|
|
|
void run();
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|