8723b08dbf
Transaction Level Modeling (TLM2.0) is widely used in industry for creating virtual platforms (IEEE 1666 SystemC). This patch contains a standard compliant implementation of an external gem5 port, that enables the usage of gem5 as a TLM initiator component in SystemC based virtual platforms. Both TLM coding paradigms loosely timed (b_transport) and aproximately timed (nb_transport) are supported. Compared to the original patch a TLM memory manager was added. Furthermore, the transaction object was removed and for each TLM payload a PacketPointer that points to the original gem5 packet is added as an TLM extension. For event handling single events are now created. Committed by: Nilay Vaish <nilay@cs.wisc.edu>
101 lines
3.6 KiB
C++
101 lines
3.6 KiB
C++
/*
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* Copyright (c) 2015, University of Kaiserslautern
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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:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. 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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*
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* 3. Neither the name of the copyright holder 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 LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER
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* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Matthias Jung
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*/
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#ifndef __SIM_SC_TARGET_HH__
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#define __SIM_SC_TARGET_HH__
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#include <tlm_utils/peq_with_cb_and_phase.h>
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#include <tlm_utils/simple_target_socket.h>
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#include <iostream>
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#include <systemc>
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#include <tlm>
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using namespace sc_core;
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using namespace std;
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struct Target: sc_module
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{
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/** TLM interface socket: */
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tlm_utils::simple_target_socket<Target> socket;
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/** TLM related member variables: */
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tlm::tlm_generic_payload* transaction_in_progress;
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sc_event target_done_event;
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bool response_in_progress;
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bool debug;
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tlm::tlm_generic_payload* next_response_pending;
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tlm::tlm_generic_payload* end_req_pending;
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tlm_utils::peq_with_cb_and_phase<Target> m_peq;
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/** Storage, may be implemented with a map for large devices */
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unsigned char *mem;
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Target(sc_core::sc_module_name name,
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bool debug,
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unsigned long long int size,
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unsigned int offset);
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SC_HAS_PROCESS(Target);
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/** TLM interface functions */
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virtual void b_transport(tlm::tlm_generic_payload& trans,
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sc_time& delay);
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virtual unsigned int transport_dbg(tlm::tlm_generic_payload& trans);
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virtual tlm::tlm_sync_enum nb_transport_fw(
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tlm::tlm_generic_payload& trans,
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tlm::tlm_phase& phase,
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sc_time& delay);
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/** Callback of Payload Event Queue: */
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void peq_cb(tlm::tlm_generic_payload& trans,
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const tlm::tlm_phase& phase);
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/** Helping function common to b_transport and nb_transport */
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void execute_transaction(tlm::tlm_generic_payload& trans);
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/** Helping functions and processes: */
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void send_end_req(tlm::tlm_generic_payload& trans);
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void send_response(tlm::tlm_generic_payload& trans);
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/** Method process that runs on target_done_event */
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void execute_transaction_process();
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/** Helping Variables **/
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unsigned long long int size;
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unsigned offset;
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};
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#endif //__SIM_SC_TARGET_HH__
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