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Diffstat (limited to 'util/tlm/sc_peq.hh')
-rw-r--r-- | util/tlm/sc_peq.hh | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/util/tlm/sc_peq.hh b/util/tlm/sc_peq.hh new file mode 100644 index 000000000..386142b72 --- /dev/null +++ b/util/tlm/sc_peq.hh @@ -0,0 +1,102 @@ +/* + * 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 PAYLOAD_EVENT_H_ +#define PAYLOAD_EVENT_H_ + +// TLM includes +#include <tlm.h> + +// gem5 includes +#include <sim/eventq.hh> + +namespace Gem5SystemC { +/** + * A 'Fake Payload Event Queue', similar to the TLM PEQs. This helps the + * transactors to schedule events in gem5. + */ +template <typename OWNER> +class PayloadEvent : public Event +{ + public: + OWNER& port; + const std::string eventName; + void (OWNER::*handler)(PayloadEvent<OWNER>* pe, + tlm::tlm_generic_payload& trans, + const tlm::tlm_phase& phase); + + protected: + tlm::tlm_generic_payload* t; + tlm::tlm_phase p; + + void process() { (port.*handler)(this, *t, p); } + + public: + const std::string name() const { return eventName; } + + PayloadEvent(OWNER& port_, + void (OWNER::*handler_)(PayloadEvent<OWNER>* pe, + tlm::tlm_generic_payload& trans, + const tlm::tlm_phase& phase), + const std::string& event_name) + : port(port_) + , eventName(event_name) + , handler(handler_) + { + } + + /// Schedule an event into gem5 + void notify(tlm::tlm_generic_payload& trans, const tlm::tlm_phase& phase, + const sc_core::sc_time& delay) + { + assert(!scheduled()); + + t = &trans; + p = phase; + + /** + * Get time from SystemC as this will always be more up to date + * than gem5's + */ + Tick nextEventTick = sc_core::sc_time_stamp().value() + delay.value(); + + port.owner.wakeupEventQueue(nextEventTick); + port.owner.schedule(this, nextEventTick); + } +}; +} + +#endif |