diff options
Diffstat (limited to 'util/tlm/src/sim_control.hh')
-rw-r--r-- | util/tlm/src/sim_control.hh | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/util/tlm/src/sim_control.hh b/util/tlm/src/sim_control.hh new file mode 100644 index 000000000..399372c7f --- /dev/null +++ b/util/tlm/src/sim_control.hh @@ -0,0 +1,129 @@ +/* + * 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 |