xref: /gem5/ext/systemc/src/tlm_core/tlm_1/tlm_req_rsp/tlm_channels/tlm_req_rsp_channels/tlm_req_rsp_channels.h

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  Licensed to Accellera Systems Initiative Inc. (Accellera) under one or
  more contributor license agreements.  See the NOTICE file distributed
  with this work for additional information regarding copyright ownership.
  Accellera licenses this file to you under the Apache License, Version 2.0
  (the "License"); you may not use this file except in compliance with the
  License.  You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
  implied.  See the License for the specific language governing
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#ifndef __TLM_REQ_RSP_CHANNELS_H__
#define __TLM_REQ_RSP_CHANNELS_H__

#include "tlm_core/tlm_1/tlm_req_rsp/tlm_adapters/tlm_adapters.h"
#include "tlm_core/tlm_1/tlm_req_rsp/tlm_channels/tlm_fifo/tlm_fifo.h"
#include "tlm_core/tlm_1/tlm_req_rsp/tlm_channels/tlm_req_rsp_channels/tlm_put_get_imp.h"

namespace tlm {

template < typename REQ , typename RSP ,
     typename REQ_CHANNEL = tlm_fifo<REQ> ,
     typename RSP_CHANNEL = tlm_fifo<RSP> >

class tlm_req_rsp_channel : public sc_core::sc_module
{
public:
  // uni-directional slave interface

  sc_core::sc_export< tlm_fifo_get_if< REQ > > get_request_export;
  sc_core::sc_export< tlm_fifo_put_if< RSP > > put_response_export;

  // uni-directional master interface

  sc_core::sc_export< tlm_fifo_put_if< REQ > > put_request_export;
  sc_core::sc_export< tlm_fifo_get_if< RSP > > get_response_export;

  // master / slave interfaces

  sc_core::sc_export< tlm_master_if< REQ , RSP > > master_export;
  sc_core::sc_export< tlm_slave_if< REQ , RSP > > slave_export;


  tlm_req_rsp_channel( int req_size = 1 , int rsp_size = 1 ) :
    sc_core::sc_module( sc_core::sc_module_name( sc_core::sc_gen_unique_name("tlm_req_rsp_channel") ) ) ,
    request_fifo( req_size ) ,
    response_fifo( rsp_size ) ,
    master( request_fifo , response_fifo ) ,
    slave( request_fifo , response_fifo )
  {

    bind_exports();

  }

  tlm_req_rsp_channel( sc_core::sc_module_name module_name ,
           int req_size = 1 , int rsp_size = 1 ) :
    sc_core::sc_module( module_name  ) ,
    request_fifo( req_size ) ,
    response_fifo( rsp_size ) ,
    master( request_fifo , response_fifo ) ,
    slave( request_fifo , response_fifo )
  {

    bind_exports();

  }

private:
  void bind_exports() {

    put_request_export( request_fifo );
    get_request_export( request_fifo );

    put_response_export( response_fifo );
    get_response_export( response_fifo );

    master_export( master );
    slave_export( slave );

  }

protected:
  REQ_CHANNEL request_fifo;
  RSP_CHANNEL response_fifo;

  tlm_master_imp< REQ , RSP > master;
  tlm_slave_imp< REQ , RSP > slave;
};

template < typename REQ , typename RSP ,
     typename REQ_CHANNEL = tlm_fifo<REQ> ,
     typename RSP_CHANNEL = tlm_fifo<RSP> >
class tlm_transport_channel : public sc_core::sc_module
{
public:

  // master transport interface

  sc_core::sc_export< tlm_transport_if< REQ , RSP > > target_export;

  // slave interfaces

  sc_core::sc_export< tlm_fifo_get_if< REQ > > get_request_export;
  sc_core::sc_export< tlm_fifo_put_if< RSP > > put_response_export;

  sc_core::sc_export< tlm_slave_if< REQ , RSP > > slave_export;

  tlm_transport_channel() :
    sc_core::sc_module( sc_core::sc_module_name( sc_core::sc_gen_unique_name("transport_channel" ) ) ) ,
    target_export("target_export") ,
    req_rsp( "req_rsp" , 1 , 1 ) ,
    t2m("ts2m")
  {
    do_binding();
  }

  tlm_transport_channel( sc_core::sc_module_name nm ) :
    sc_core::sc_module( nm ) ,
    target_export("target_export") ,
    req_rsp( "req_rsp" , 1 , 1 ) ,
    t2m("tsm" )
  {
    do_binding();
  }

private:
  void do_binding() {

    target_export( t2m.target_export );

    t2m.master_port( req_rsp.master_export );

    get_request_export( req_rsp.get_request_export );
    put_response_export( req_rsp.put_response_export );
    slave_export( req_rsp.slave_export );

  }

  tlm_req_rsp_channel< REQ , RSP , REQ_CHANNEL , RSP_CHANNEL > req_rsp;
  tlm_transport_to_master< REQ , RSP > t2m;

};

} // namespace tlm

#endif