diff -r c6e92c923a9e -r 6cd8824bfe04 util/tlm/sc_mm.cc --- a/util/tlm/sc_mm.cc Wed Oct 26 17:51:32 2016 +0200 +++ b/util/tlm/sc_mm.cc Wed Nov 02 10:31:25 2016 +0100 @@ -40,6 +40,9 @@ using namespace std; +namespace Gem5SystemC +{ + MemoryManager::MemoryManager(): numberOfAllocations(0), numberOfFrees(0) { @@ -72,3 +75,5 @@ payload->reset(); //clears all extensions freePayloads.push_back(payload); } + +} diff -r c6e92c923a9e -r 6cd8824bfe04 util/tlm/sc_peq.hh --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/util/tlm/sc_peq.hh Wed Nov 02 10:31:25 2016 +0100 @@ -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 + +// gem5 includes +#include + +namespace Gem5SystemC { +/** + * A 'Fake Payload Event Queue', similar to the TLM PEQs. This helps the + * transactors to schedule events in gem5. + */ +template +class PayloadEvent : public Event +{ + public: + OWNER& port; + const std::string eventName; + void (OWNER::*handler)(PayloadEvent* 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* 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 diff -r c6e92c923a9e -r 6cd8824bfe04 util/tlm/sc_port.hh --- a/util/tlm/sc_port.hh Wed Oct 26 17:51:32 2016 +0200 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,174 +0,0 @@ -/* - * 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 - */ - -#ifndef __SIM_SC_TRANSACTOR_HH__ -#define __SIM_SC_TRANSACTOR_HH__ - -#include - -#include -#include -#include - -#include "mem/external_slave.hh" -#include "sc_mm.hh" -#include "sc_module.hh" - -namespace Gem5SystemC -{ -/** - * Test that gem5 is at the same time as SystemC - */ -#define CAUGHT_UP do { \ - assert(curTick() == sc_core::sc_time_stamp().value()); \ -} while (0) - - -class sc_transactor : public tlm::tlm_initiator_socket<>, - public tlm::tlm_bw_transport_if<>, - public ExternalSlave::Port -{ - public: - sc_transactor &iSocket; - - /** - * A 'Fake Payload Event Queue', similar to the TLM PEQs. This will help - * that gem5 behaves like a normal TLM Initiator - */ - template - class payloadEvent : public Event - { - public: - OWNER &port; - const std::string eventName; - void (OWNER::* handler)(payloadEvent * 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 * 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 alway 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); - } - }; - - /** One instance of pe and the related callback needed */ - //payloadEvent pe; - void pec(payloadEvent * pe, - tlm::tlm_generic_payload& trans, const tlm::tlm_phase& phase); - - /** - * A transaction after BEGIN_REQ has been sent but before END_REQ, which - * is blocking the request channel (Exlusion Rule, see IEEE1666) - */ - tlm::tlm_generic_payload *blockingRequest; - - /** - * Did another gem5 request arrive while currently blocked? - * This variable is needed when a retry should happen - */ - bool needToSendRequestRetry; - - /** - * A response which has been asked to retry by gem5 and so is blocking - * the response channel - */ - tlm::tlm_generic_payload *blockingResponse; - - protected: - /** The gem5 Port slave interface */ - Tick recvAtomic(PacketPtr packet); - void recvFunctional(PacketPtr packet); - bool recvTimingReq(PacketPtr packet); - bool recvTimingSnoopResp(PacketPtr packet); - void recvRespRetry(); - void recvFunctionalSnoop(PacketPtr packet); - - /** The TLM initiator interface */ - tlm::tlm_sync_enum nb_transport_bw(tlm::tlm_generic_payload& trans, - tlm::tlm_phase& phase, - sc_core::sc_time& t); - - void invalidate_direct_mem_ptr(sc_dt::uint64 start_range, - sc_dt::uint64 end_range); - - public: - sc_transactor(const std::string &name_, - const std::string &systemc_name, - ExternalSlave &owner_); -}; - -void registerPort(const std::string &name, Port &port); - -void registerSCPorts(); - -} - -#endif // __SIM_SC_PORT_HH__ diff -r c6e92c923a9e -r 6cd8824bfe04 util/tlm/sc_port.cc --- a/util/tlm/sc_port.cc Wed Oct 26 17:51:32 2016 +0200 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,372 +0,0 @@ -/* - * 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 - * Abdul Mutaal Ahmad - */ - -#include -#include -#include - -#include "debug/ExternalPort.hh" -#include "sc_ext.hh" -#include "sc_mm.hh" -#include "sc_port.hh" - -namespace Gem5SystemC -{ - -/** - * Instantiate a tlm memory manager that takes care about all the - * tlm transactions in the system - */ -MemoryManager mm; - -/** - * Convert a gem5 packet to a TLM payload by copying all the relevant - * information to a previously allocated tlm payload - */ -void -packet2payload(PacketPtr packet, tlm::tlm_generic_payload &trans) -{ - trans.set_address(packet->getAddr()); - - /* Check if this transaction was allocated by mm */ - sc_assert(trans.has_mm()); - - unsigned int size = packet->getSize(); - unsigned char *data = packet->getPtr(); - - trans.set_data_length(size); - trans.set_streaming_width(size); - trans.set_data_ptr(data); - - if (packet->isRead()) { - trans.set_command(tlm::TLM_READ_COMMAND); - } - else if (packet->isInvalidate()) { - /* Do nothing */ - } else if (packet->isWrite()) { - trans.set_command(tlm::TLM_WRITE_COMMAND); - } else { - SC_REPORT_FATAL("transactor", "No R/W packet"); - } -} - -/** - * Similar to TLM's blocking transport (LT) - */ -Tick -sc_transactor::recvAtomic(PacketPtr packet) -{ - CAUGHT_UP; - SC_REPORT_INFO("transactor", "recvAtomic hasn't been tested much"); - - panic_if(packet->cacheResponding(), "Should not see packets where cache " - "is responding"); - - panic_if(!(packet->isRead() || packet->isWrite()), - "Should only see read and writes at TLM memory\n"); - - - sc_core::sc_time delay = sc_core::SC_ZERO_TIME; - - - /* Prepare the transaction */ - tlm::tlm_generic_payload * trans = mm.allocate(); - trans->acquire(); - packet2payload(packet, *trans); - - /* Attach the packet pointer to the TLM transaction to keep track */ - gem5Extension* extension = new gem5Extension(packet); - trans->set_auto_extension(extension); - - /* Execute b_transport: */ - if (packet->cmd == MemCmd::SwapReq) { - SC_REPORT_FATAL("transactor", "SwapReq not supported"); - } else if (packet->isRead()) { - iSocket->b_transport(*trans, delay); - } else if (packet->isInvalidate()) { - // do nothing - } else if (packet->isWrite()) { - iSocket->b_transport(*trans, delay); - } else { - SC_REPORT_FATAL("transactor", "Typo of request not supported"); - } - - if (packet->needsResponse()) { - packet->makeResponse(); - } - - trans->release(); - - return delay.value(); -} - -/** - * Similar to TLM's debug transport - */ -void -sc_transactor::recvFunctional(PacketPtr packet) -{ - /* Prepare the transaction */ - tlm::tlm_generic_payload * trans = mm.allocate(); - trans->acquire(); - packet2payload(packet, *trans); - - /* Attach the packet pointer to the TLM transaction to keep track */ - gem5Extension* extension = new gem5Extension(packet); - trans->set_auto_extension(extension); - - /* Execute Debug Transport: */ - unsigned int bytes = iSocket->transport_dbg(*trans); - if (bytes != trans->get_data_length()) { - SC_REPORT_FATAL("transactor","debug transport was not completed"); - } - - trans->release(); -} - -bool -sc_transactor::recvTimingSnoopResp(PacketPtr packet) -{ - /* Snooping should be implemented with tlm_dbg_transport */ - SC_REPORT_FATAL("transactor","unimplemented func.: recvTimingSnoopResp"); - return false; -} - -void -sc_transactor::recvFunctionalSnoop(PacketPtr packet) -{ - /* Snooping should be implemented with tlm_dbg_transport */ - SC_REPORT_FATAL("transactor","unimplemented func.: recvFunctionalSnoop"); -} - -/** - * Similar to TLM's non-blocking transport (AT) - */ -bool -sc_transactor::recvTimingReq(PacketPtr packet) -{ - CAUGHT_UP; - - panic_if(packet->cacheResponding(), "Should not see packets where cache " - "is responding"); - - panic_if(!(packet->isRead() || packet->isWrite()), - "Should only see read and writes at TLM memory\n"); - - - /* We should never get a second request after noting that a retry is - * required */ - sc_assert(!needToSendRequestRetry); - - /* Remember if a request comes in while we're blocked so that a retry - * can be sent to gem5 */ - if (blockingRequest) { - needToSendRequestRetry = true; - return false; - } - - /* NOTE: normal tlm is blocking here. But in our case we return false - * and tell gem5 when a retry can be done. This is the main difference - * in the protocol: - * if (requestInProgress) - * { - * wait(endRequestEvent); - * } - * requestInProgress = trans; - */ - - /* Prepare the transaction */ - tlm::tlm_generic_payload * trans = mm.allocate(); - trans->acquire(); - packet2payload(packet, *trans); - - /* Attach the packet pointer to the TLM transaction to keep track */ - gem5Extension* extension = new gem5Extension(packet); - trans->set_auto_extension(extension); - - /* Starting TLM non-blocking sequence (AT) Refer to IEEE1666-2011 SystemC - * Standard Page 507 for a visualisation of the procedure */ - sc_core::sc_time delay = sc_core::SC_ZERO_TIME; - tlm::tlm_phase phase = tlm::BEGIN_REQ; - tlm::tlm_sync_enum status; - status = iSocket->nb_transport_fw(*trans, phase, delay); - /* Check returned value: */ - if (status == tlm::TLM_ACCEPTED) { - sc_assert(phase == tlm::BEGIN_REQ); - /* Accepted but is now blocking until END_REQ (exclusion rule)*/ - blockingRequest = trans; - } else if (status == tlm::TLM_UPDATED) { - /* The Timing annotation must be honored: */ - sc_assert(phase == tlm::END_REQ || phase == tlm::BEGIN_RESP); - - payloadEvent * pe; - pe = new payloadEvent(*this, - &sc_transactor::pec, "PEQ"); - pe->notify(*trans, phase, delay); - } else if (status == tlm::TLM_COMPLETED) { - /* Transaction is over nothing has do be done. */ - sc_assert(phase == tlm::END_RESP); - trans->release(); - } - - return true; -} - -void -sc_transactor::pec( - sc_transactor::payloadEvent * pe, - tlm::tlm_generic_payload& trans, - const tlm::tlm_phase& phase) -{ - sc_time delay; - - if (phase == tlm::END_REQ || - &trans == blockingRequest && phase == tlm::BEGIN_RESP) { - sc_assert(&trans == blockingRequest); - blockingRequest = NULL; - - /* Did another request arrive while blocked, schedule a retry */ - if (needToSendRequestRetry) { - needToSendRequestRetry = false; - iSocket.sendRetryReq(); - } - } - else if (phase == tlm::BEGIN_RESP) - { - CAUGHT_UP; - - PacketPtr packet = gem5Extension::getExtension(trans).getPacket(); - - sc_assert(!blockingResponse); - - bool need_retry; - if (packet->needsResponse()) { - packet->makeResponse(); - need_retry = !iSocket.sendTimingResp(packet); - } else { - need_retry = false; - } - - if (need_retry) { - blockingResponse = &trans; - } else { - if (phase == tlm::BEGIN_RESP) { - /* Send END_RESP and we're finished: */ - tlm::tlm_phase fw_phase = tlm::END_RESP; - sc_time delay = SC_ZERO_TIME; - iSocket->nb_transport_fw(trans, fw_phase, delay); - /* Release the transaction with all the extensions */ - trans.release(); - } - } - } else { - SC_REPORT_FATAL("transactor", "Invalid protocol phase in pec"); - } - delete pe; -} - -void -sc_transactor::recvRespRetry() -{ - CAUGHT_UP; - - /* Retry a response */ - sc_assert(blockingResponse); - - tlm::tlm_generic_payload *trans = blockingResponse; - blockingResponse = NULL; - PacketPtr packet = gem5Extension::getExtension(trans).getPacket(); - - bool need_retry = !iSocket.sendTimingResp(packet); - - sc_assert(!need_retry); - - sc_core::sc_time delay = sc_core::SC_ZERO_TIME; - tlm::tlm_phase phase = tlm::END_RESP; - iSocket->nb_transport_fw(*trans, phase, delay); - // Release transaction with all the extensions - trans->release(); -} - -tlm::tlm_sync_enum -sc_transactor::nb_transport_bw(tlm::tlm_generic_payload& trans, - tlm::tlm_phase& phase, - sc_core::sc_time& delay) -{ - payloadEvent * pe; - pe = new payloadEvent(*this, &sc_transactor::pec, "PE"); - pe->notify(trans, phase, delay); - return tlm::TLM_ACCEPTED; -} - -void -sc_transactor::invalidate_direct_mem_ptr(sc_dt::uint64 start_range, - sc_dt::uint64 end_range) -{ - SC_REPORT_FATAL("transactor", "unimpl. func: invalidate_direct_mem_ptr"); -} - -sc_transactor::sc_transactor(const std::string &name_, - const std::string &systemc_name, - ExternalSlave &owner_) : - tlm::tlm_initiator_socket<>(systemc_name.c_str()), - ExternalSlave::Port(name_, owner_), - iSocket(*this), - blockingRequest(NULL), - needToSendRequestRetry(false), - blockingResponse(NULL) -{ - m_export.bind(*this); -} - -class sc_transactorHandler : public ExternalSlave::Handler -{ - public: - ExternalSlave::Port *getExternalPort(const std::string &name, - ExternalSlave &owner, - const std::string &port_data) - { - // This will make a new initiatiator port - return new sc_transactor(name, port_data, owner); - } -}; - -void -registerSCPorts() -{ - ExternalSlave::registerHandler("tlm", new sc_transactorHandler); -} - -} diff -r c6e92c923a9e -r 6cd8824bfe04 util/tlm/sc_slave_port.hh --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/util/tlm/sc_slave_port.hh Wed Nov 02 10:31:25 2016 +0100 @@ -0,0 +1,120 @@ +/* + * 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_SLAVE_PORT_HH__ +#define __SC_SLAVE_PORT_HH__ + +#include + +#include +#include +#include + +#include "mem/external_slave.hh" +#include "sc_mm.hh" +#include "sc_module.hh" +#include "sc_peq.hh" + +namespace Gem5SystemC +{ +/** + * Test that gem5 is at the same time as SystemC + */ +#define CAUGHT_UP do { \ + assert(curTick() == sc_core::sc_time_stamp().value()); \ +} while (0) + + +class SCSlavePort : public tlm::tlm_initiator_socket<>, + public tlm::tlm_bw_transport_if<>, + public ExternalSlave::Port +{ + public: + SCSlavePort &iSocket; + + /** One instance of pe and the related callback needed */ + //payloadEvent pe; + void pec(PayloadEvent * pe, + tlm::tlm_generic_payload& trans, const tlm::tlm_phase& phase); + + /** + * A transaction after BEGIN_REQ has been sent but before END_REQ, which + * is blocking the request channel (Exlusion Rule, see IEEE1666) + */ + tlm::tlm_generic_payload *blockingRequest; + + /** + * Did another gem5 request arrive while currently blocked? + * This variable is needed when a retry should happen + */ + bool needToSendRequestRetry; + + /** + * A response which has been asked to retry by gem5 and so is blocking + * the response channel + */ + tlm::tlm_generic_payload *blockingResponse; + + protected: + /** The gem5 Port slave interface */ + Tick recvAtomic(PacketPtr packet); + void recvFunctional(PacketPtr packet); + bool recvTimingReq(PacketPtr packet); + bool recvTimingSnoopResp(PacketPtr packet); + void recvRespRetry(); + void recvFunctionalSnoop(PacketPtr packet); + + /** The TLM initiator interface */ + tlm::tlm_sync_enum nb_transport_bw(tlm::tlm_generic_payload& trans, + tlm::tlm_phase& phase, + sc_core::sc_time& t); + + void invalidate_direct_mem_ptr(sc_dt::uint64 start_range, + sc_dt::uint64 end_range); + + public: + SCSlavePort(const std::string &name_, + const std::string &systemc_name, + ExternalSlave &owner_); + + static void registerPortHandler(); + + friend PayloadEvent; +}; + +} + +#endif // __SC_SLAVE_PORT_H__ diff -r c6e92c923a9e -r 6cd8824bfe04 util/tlm/sc_slave_port.cc --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/util/tlm/sc_slave_port.cc Wed Nov 02 10:31:25 2016 +0100 @@ -0,0 +1,374 @@ +/* + * 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 + * Abdul Mutaal Ahmad + * Christian Menard + */ + +#include +#include +#include + +#include "debug/ExternalPort.hh" +#include "sc_ext.hh" +#include "sc_mm.hh" +#include "sc_slave_port.hh" + +namespace Gem5SystemC +{ + +/** + * Instantiate a tlm memory manager that takes care about all the + * tlm transactions in the system + */ +MemoryManager mm; + +/** + * Convert a gem5 packet to a TLM payload by copying all the relevant + * information to a previously allocated tlm payload + */ +void +packet2payload(PacketPtr packet, tlm::tlm_generic_payload &trans) +{ + trans.set_address(packet->getAddr()); + + /* Check if this transaction was allocated by mm */ + sc_assert(trans.has_mm()); + + unsigned int size = packet->getSize(); + unsigned char *data = packet->getPtr(); + + trans.set_data_length(size); + trans.set_streaming_width(size); + trans.set_data_ptr(data); + + if (packet->isRead()) { + trans.set_command(tlm::TLM_READ_COMMAND); + } + else if (packet->isInvalidate()) { + /* Do nothing */ + } else if (packet->isWrite()) { + trans.set_command(tlm::TLM_WRITE_COMMAND); + } else { + SC_REPORT_FATAL("transactor", "No R/W packet"); + } +} + +/** + * Similar to TLM's blocking transport (LT) + */ +Tick +SCSlavePort::recvAtomic(PacketPtr packet) +{ + CAUGHT_UP; + SC_REPORT_INFO("transactor", "recvAtomic hasn't been tested much"); + + panic_if(packet->cacheResponding(), "Should not see packets where cache " + "is responding"); + + panic_if(!(packet->isRead() || packet->isWrite()), + "Should only see read and writes at TLM memory\n"); + + + sc_core::sc_time delay = sc_core::SC_ZERO_TIME; + + + /* Prepare the transaction */ + tlm::tlm_generic_payload * trans = mm.allocate(); + trans->acquire(); + packet2payload(packet, *trans); + + /* Attach the packet pointer to the TLM transaction to keep track */ + gem5Extension* extension = new gem5Extension(packet); + trans->set_auto_extension(extension); + + /* Execute b_transport: */ + if (packet->cmd == MemCmd::SwapReq) { + SC_REPORT_FATAL("transactor", "SwapReq not supported"); + } else if (packet->isRead()) { + iSocket->b_transport(*trans, delay); + } else if (packet->isInvalidate()) { + // do nothing + } else if (packet->isWrite()) { + iSocket->b_transport(*trans, delay); + } else { + SC_REPORT_FATAL("transactor", "Typo of request not supported"); + } + + if (packet->needsResponse()) { + packet->makeResponse(); + } + + trans->release(); + + return delay.value(); +} + +/** + * Similar to TLM's debug transport + */ +void +SCSlavePort::recvFunctional(PacketPtr packet) +{ + /* Prepare the transaction */ + tlm::tlm_generic_payload * trans = mm.allocate(); + trans->acquire(); + packet2payload(packet, *trans); + + /* Attach the packet pointer to the TLM transaction to keep track */ + gem5Extension* extension = new gem5Extension(packet); + trans->set_auto_extension(extension); + + /* Execute Debug Transport: */ + unsigned int bytes = iSocket->transport_dbg(*trans); + if (bytes != trans->get_data_length()) { + SC_REPORT_FATAL("transactor","debug transport was not completed"); + } + + trans->release(); +} + +bool +SCSlavePort::recvTimingSnoopResp(PacketPtr packet) +{ + /* Snooping should be implemented with tlm_dbg_transport */ + SC_REPORT_FATAL("transactor","unimplemented func.: recvTimingSnoopResp"); + return false; +} + +void +SCSlavePort::recvFunctionalSnoop(PacketPtr packet) +{ + /* Snooping should be implemented with tlm_dbg_transport */ + SC_REPORT_FATAL("transactor","unimplemented func.: recvFunctionalSnoop"); +} + +/** + * Similar to TLM's non-blocking transport (AT) + */ +bool +SCSlavePort::recvTimingReq(PacketPtr packet) +{ + CAUGHT_UP; + + panic_if(packet->cacheResponding(), "Should not see packets where cache " + "is responding"); + + panic_if(!(packet->isRead() || packet->isWrite()), + "Should only see read and writes at TLM memory\n"); + + + /* We should never get a second request after noting that a retry is + * required */ + sc_assert(!needToSendRequestRetry); + + /* Remember if a request comes in while we're blocked so that a retry + * can be sent to gem5 */ + if (blockingRequest) { + needToSendRequestRetry = true; + return false; + } + + /* NOTE: normal tlm is blocking here. But in our case we return false + * and tell gem5 when a retry can be done. This is the main difference + * in the protocol: + * if (requestInProgress) + * { + * wait(endRequestEvent); + * } + * requestInProgress = trans; + */ + + /* Prepare the transaction */ + tlm::tlm_generic_payload * trans = mm.allocate(); + trans->acquire(); + packet2payload(packet, *trans); + + /* Attach the packet pointer to the TLM transaction to keep track */ + gem5Extension* extension = new gem5Extension(packet); + trans->set_auto_extension(extension); + + /* Starting TLM non-blocking sequence (AT) Refer to IEEE1666-2011 SystemC + * Standard Page 507 for a visualisation of the procedure */ + sc_core::sc_time delay = sc_core::SC_ZERO_TIME; + tlm::tlm_phase phase = tlm::BEGIN_REQ; + tlm::tlm_sync_enum status; + status = iSocket->nb_transport_fw(*trans, phase, delay); + /* Check returned value: */ + if (status == tlm::TLM_ACCEPTED) { + sc_assert(phase == tlm::BEGIN_REQ); + /* Accepted but is now blocking until END_REQ (exclusion rule)*/ + blockingRequest = trans; + } else if (status == tlm::TLM_UPDATED) { + /* The Timing annotation must be honored: */ + sc_assert(phase == tlm::END_REQ || phase == tlm::BEGIN_RESP); + + PayloadEvent * pe; + pe = new PayloadEvent(*this, + &SCSlavePort::pec, "PEQ"); + pe->notify(*trans, phase, delay); + } else if (status == tlm::TLM_COMPLETED) { + /* Transaction is over nothing has do be done. */ + sc_assert(phase == tlm::END_RESP); + trans->release(); + } + + return true; +} + +void +SCSlavePort::pec( + PayloadEvent * pe, + tlm::tlm_generic_payload& trans, + const tlm::tlm_phase& phase) +{ + sc_time delay; + + if (phase == tlm::END_REQ || + &trans == blockingRequest && phase == tlm::BEGIN_RESP) { + sc_assert(&trans == blockingRequest); + blockingRequest = NULL; + + /* Did another request arrive while blocked, schedule a retry */ + if (needToSendRequestRetry) { + needToSendRequestRetry = false; + iSocket.sendRetryReq(); + } + } + else if (phase == tlm::BEGIN_RESP) + { + CAUGHT_UP; + + PacketPtr packet = gem5Extension::getExtension(trans).getPacket(); + + sc_assert(!blockingResponse); + + bool need_retry; + if (packet->needsResponse()) { + packet->makeResponse(); + need_retry = !iSocket.sendTimingResp(packet); + } else { + need_retry = false; + } + + if (need_retry) { + blockingResponse = &trans; + } else { + if (phase == tlm::BEGIN_RESP) { + /* Send END_RESP and we're finished: */ + tlm::tlm_phase fw_phase = tlm::END_RESP; + sc_time delay = SC_ZERO_TIME; + iSocket->nb_transport_fw(trans, fw_phase, delay); + /* Release the transaction with all the extensions */ + trans.release(); + } + } + } else { + SC_REPORT_FATAL("transactor", "Invalid protocol phase in pec"); + } + delete pe; +} + +void +SCSlavePort::recvRespRetry() +{ + CAUGHT_UP; + + /* Retry a response */ + sc_assert(blockingResponse); + + tlm::tlm_generic_payload *trans = blockingResponse; + blockingResponse = NULL; + PacketPtr packet = gem5Extension::getExtension(trans).getPacket(); + + bool need_retry = !iSocket.sendTimingResp(packet); + + sc_assert(!need_retry); + + sc_core::sc_time delay = sc_core::SC_ZERO_TIME; + tlm::tlm_phase phase = tlm::END_RESP; + iSocket->nb_transport_fw(*trans, phase, delay); + // Release transaction with all the extensions + trans->release(); +} + +tlm::tlm_sync_enum +SCSlavePort::nb_transport_bw(tlm::tlm_generic_payload& trans, + tlm::tlm_phase& phase, + sc_core::sc_time& delay) +{ + PayloadEvent * pe; + pe = new PayloadEvent(*this, &SCSlavePort::pec, "PE"); + pe->notify(trans, phase, delay); + return tlm::TLM_ACCEPTED; +} + +void +SCSlavePort::invalidate_direct_mem_ptr(sc_dt::uint64 start_range, + sc_dt::uint64 end_range) +{ + SC_REPORT_FATAL("transactor", "unimpl. func: invalidate_direct_mem_ptr"); +} + +SCSlavePort::SCSlavePort(const std::string &name_, + const std::string &systemc_name, + ExternalSlave &owner_) : + tlm::tlm_initiator_socket<>(systemc_name.c_str()), + ExternalSlave::Port(name_, owner_), + iSocket(*this), + blockingRequest(NULL), + needToSendRequestRetry(false), + blockingResponse(NULL) +{ + m_export.bind(*this); +} + +class SlavePortHandler : public ExternalSlave::Handler +{ + public: + ExternalSlave::Port *getExternalPort(const std::string &name, + ExternalSlave &owner, + const std::string &port_data) + { + // This will make a new initiatiator port + return new SCSlavePort(name, port_data, owner); + } +}; + +void +SCSlavePort::registerPortHandler() +{ + ExternalSlave::registerHandler("tlm_slave", new SlavePortHandler); +} + +} diff -r c6e92c923a9e -r 6cd8824bfe04 util/tlm/sc_target.hh --- a/util/tlm/sc_target.hh Wed Oct 26 17:51:32 2016 +0200 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,100 +0,0 @@ -/* - * 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 - */ - -#ifndef __SIM_SC_TARGET_HH__ -#define __SIM_SC_TARGET_HH__ - -#include -#include - -#include -#include -#include - -using namespace sc_core; -using namespace std; - -struct Target: sc_module -{ - /** TLM interface socket: */ - tlm_utils::simple_target_socket socket; - - /** TLM related member variables: */ - tlm::tlm_generic_payload* transaction_in_progress; - sc_event target_done_event; - bool response_in_progress; - bool debug; - tlm::tlm_generic_payload* next_response_pending; - tlm::tlm_generic_payload* end_req_pending; - tlm_utils::peq_with_cb_and_phase m_peq; - - /** Storage, may be implemented with a map for large devices */ - unsigned char *mem; - - Target(sc_core::sc_module_name name, - bool debug, - unsigned long long int size, - unsigned int offset); - SC_HAS_PROCESS(Target); - - /** TLM interface functions */ - virtual void b_transport(tlm::tlm_generic_payload& trans, - sc_time& delay); - virtual unsigned int transport_dbg(tlm::tlm_generic_payload& trans); - virtual tlm::tlm_sync_enum nb_transport_fw( - tlm::tlm_generic_payload& trans, - tlm::tlm_phase& phase, - sc_time& delay); - - /** Callback of Payload Event Queue: */ - void peq_cb(tlm::tlm_generic_payload& trans, - const tlm::tlm_phase& phase); - - /** Helping function common to b_transport and nb_transport */ - void execute_transaction(tlm::tlm_generic_payload& trans); - - /** Helping functions and processes: */ - void send_end_req(tlm::tlm_generic_payload& trans); - void send_response(tlm::tlm_generic_payload& trans); - - /** Method process that runs on target_done_event */ - void execute_transaction_process(); - - /** Helping Variables **/ - unsigned long long int size; - unsigned offset; -}; - -#endif //__SIM_SC_TARGET_HH__ - diff -r c6e92c923a9e -r 6cd8824bfe04 util/tlm/sc_target.cc --- a/util/tlm/sc_target.cc Wed Oct 26 17:51:32 2016 +0200 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,264 +0,0 @@ -/* - * 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_target.hh" - -using namespace sc_core; -using namespace std; - -Target::Target(sc_core::sc_module_name name, - bool debug, - unsigned long long int size, - unsigned int offset) : - socket("socket"), - transaction_in_progress(0), - response_in_progress(false), - next_response_pending(0), - end_req_pending(0), - m_peq(this, &Target::peq_cb), - debug(debug), - size(size), - offset(offset) -{ - /* Register tlm transport functions */ - socket.register_b_transport(this, &Target::b_transport); - socket.register_transport_dbg(this, &Target::transport_dbg); - socket.register_nb_transport_fw(this, &Target::nb_transport_fw); - - - /* allocate storage memory */ - mem = new unsigned char[size]; - - SC_METHOD(execute_transaction_process); - sensitive << target_done_event; - dont_initialize(); -} - -void -Target::b_transport(tlm::tlm_generic_payload& trans, sc_time& delay) -{ - /* Execute the read or write commands */ - execute_transaction(trans); -} - -unsigned int -Target::transport_dbg(tlm::tlm_generic_payload& trans) -{ - tlm::tlm_command cmd = trans.get_command(); - sc_dt::uint64 adr = trans.get_address() - offset; - unsigned char* ptr = trans.get_data_ptr(); - unsigned int len = trans.get_data_length(); - - unsigned char *mem_array_ptr = mem + adr; - - /* Load / Store the access: */ - if ( cmd == tlm::TLM_READ_COMMAND ) { - if (debug) { - SC_REPORT_INFO("target", "tlm::TLM_READ_COMMAND"); - } - std::memcpy(ptr, mem_array_ptr, len); - } else if ( cmd == tlm::TLM_WRITE_COMMAND ) { - if (debug) { - SC_REPORT_INFO("target", "tlm::TLM_WRITE_COMMAND"); - } - std::memcpy(mem_array_ptr, ptr, len); - } - - return len; -} - - -/* TLM-2 non-blocking transport method */ -tlm::tlm_sync_enum Target::nb_transport_fw(tlm::tlm_generic_payload& trans, - tlm::tlm_phase& phase, - sc_time& delay) -{ - /* Queue the transaction until the annotated time has elapsed */ - m_peq.notify(trans, phase, delay); - return tlm::TLM_ACCEPTED; -} - -void -Target::peq_cb(tlm::tlm_generic_payload& trans, - const tlm::tlm_phase& phase) -{ - sc_time delay; - - if (phase == tlm::BEGIN_REQ) { - if (debug) SC_REPORT_INFO("target", "tlm::BEGIN_REQ"); - - /* Increment the transaction reference count */ - trans.acquire(); - - if ( !transaction_in_progress ) { - send_end_req(trans); - } else { - /* Put back-pressure on initiator by deferring END_REQ until - * pipeline is clear */ - end_req_pending = &trans; - } - } else if (phase == tlm::END_RESP) { - /* On receiving END_RESP, the target can release the transaction and - * allow other pending transactions to proceed */ - if (!response_in_progress) { - SC_REPORT_FATAL("TLM-2", "Illegal transaction phase END_RESP" - "received by target"); - } - - transaction_in_progress = 0; - - /* Target itself is now clear to issue the next BEGIN_RESP */ - response_in_progress = false; - if (next_response_pending) { - send_response( *next_response_pending ); - next_response_pending = 0; - } - - /* ... and to unblock the initiator by issuing END_REQ */ - if (end_req_pending) { - send_end_req( *end_req_pending ); - end_req_pending = 0; - } - - } else /* tlm::END_REQ or tlm::BEGIN_RESP */ { - SC_REPORT_FATAL("TLM-2", "Illegal transaction phase received by" - "target"); - } -} - -void -Target::send_end_req(tlm::tlm_generic_payload& trans) -{ - tlm::tlm_phase bw_phase; - sc_time delay; - - /* Queue the acceptance and the response with the appropriate latency */ - bw_phase = tlm::END_REQ; - delay = sc_time(10, SC_NS); // Accept delay - - tlm::tlm_sync_enum status; - status = socket->nb_transport_bw(trans, bw_phase, delay); - - /* Ignore return value; - * initiator cannot terminate transaction at this point - * Queue internal event to mark beginning of response: */ - delay = delay + sc_time(40, SC_NS); // Latency - target_done_event.notify(delay); - - assert(transaction_in_progress == 0); - transaction_in_progress = &trans; -} - -void -Target::execute_transaction_process() -{ - /* Execute the read or write commands */ - execute_transaction( *transaction_in_progress ); - - /* Target must honor BEGIN_RESP/END_RESP exclusion rule; i.e. must not - * send BEGIN_RESP until receiving previous END_RESP or BEGIN_REQ */ - if (response_in_progress) { - /* Target allows only two transactions in-flight */ - if (next_response_pending) { - SC_REPORT_FATAL("TLM-2", "Attempt to have two pending responses" - "in target"); - } - next_response_pending = transaction_in_progress; - } else { - send_response( *transaction_in_progress ); - } -} - -void -Target::execute_transaction(tlm::tlm_generic_payload& trans) -{ - tlm::tlm_command cmd = trans.get_command(); - sc_dt::uint64 adr = trans.get_address() - offset; - unsigned char* ptr = trans.get_data_ptr(); - unsigned int len = trans.get_data_length(); - unsigned char* byt = trans.get_byte_enable_ptr(); - unsigned int wid = trans.get_streaming_width(); - - if ( byt != 0 ) { - cout << "Byte Error" << endl; - trans.set_response_status( tlm::TLM_BYTE_ENABLE_ERROR_RESPONSE ); - return; - } - - //if ( len > 4 || wid < len ) { - // cout << "Burst Error len=" << len << " wid=" << wid << endl; - // trans.set_response_status( tlm::TLM_BURST_ERROR_RESPONSE ); - // return; - //} - - unsigned char *mem_array_ptr = mem + adr; - - /* Load / Store the access: */ - if ( cmd == tlm::TLM_READ_COMMAND ) { - if (debug) { - SC_REPORT_INFO("target", "tlm::TLM_READ_COMMAND"); - } - std::memcpy(ptr, mem_array_ptr, len); - } else if ( cmd == tlm::TLM_WRITE_COMMAND ) { - if (debug) { - SC_REPORT_INFO("target", "tlm::TLM_WRITE_COMMAND"); - } - std::memcpy(mem_array_ptr, ptr, len); - } - - trans.set_response_status( tlm::TLM_OK_RESPONSE ); -} - -void -Target::send_response(tlm::tlm_generic_payload& trans) -{ - tlm::tlm_sync_enum status; - tlm::tlm_phase bw_phase; - sc_time delay; - - response_in_progress = true; - bw_phase = tlm::BEGIN_RESP; - delay = sc_time(10, SC_NS); - status = socket->nb_transport_bw( trans, bw_phase, delay ); - - if (status == tlm::TLM_UPDATED) { - /* The timing annotation must be honored */ - m_peq.notify(trans, bw_phase, delay); - } else if (status == tlm::TLM_COMPLETED) { - /* The initiator has terminated the transaction */ - transaction_in_progress = 0; - response_in_progress = false; - } - trans.release(); -} diff -r c6e92c923a9e -r 6cd8824bfe04 util/tlm/sim_control.hh --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/util/tlm/sim_control.hh Wed Nov 02 10:31:25 2016 +0100 @@ -0,0 +1,76 @@ +/* + * 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 + +#include +#include + +#include "sc_logger.hh" +#include "sc_module.hh" +#include "sim/cxx_manager.hh" +#include "sim/system.hh" + +class SimControl : public Gem5SystemC::Module +{ + protected: + int argc; + char** argv; + CxxConfigManager* config_manager; + Gem5SystemC::Logger logger; + + Tick sim_end; + bool debug; + unsigned int offset; + + public: + SC_HAS_PROCESS(SimControl); + + SimControl(sc_core::sc_module_name name, int argc_, char** argv_); + + void before_end_of_elaboration(); + + bool getDebugFlag() { return debug; } + + unsigned int getOffset() { return offset; } + + void run(); +}; + +#endif diff -r c6e92c923a9e -r 6cd8824bfe04 util/tlm/sim_control.cc --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/util/tlm/sim_control.cc Wed Nov 02 10:31:25 2016 +0100 @@ -0,0 +1,226 @@ +/* + * 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 + * Abdul Mutaal Ahmad + * Christian Menard + */ + +/** + * @file + * + * Example top level file for SystemC-TLM integration with C++-only + * instantiation. + * + */ + +#include +#include + +#include "sc_slave_port.hh" +#include "sim/cxx_config_ini.hh" +#include "sim/init_signals.hh" +#include "sim/stat_control.hh" +#include "sim_control.hh" +#include "stats.hh" + +void +usage(const std::string& prog_name) +{ + std::cerr + << "Usage: " << prog_name + << (" [