tlm_target_socket.h

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#ifndef TLM_CORE_TLM_TARGET_SOCKET_H_INCLUDED_
#define TLM_CORE_TLM_TARGET_SOCKET_H_INCLUDED_

#include "tlm_core/tlm_2/tlm_sockets/tlm_base_socket_if.h"
#include "tlm_core/tlm_2/tlm_2_interfaces/tlm_fw_bw_ifs.h"


namespace tlm {

template <unsigned int BUSWIDTH = 32,
          typename FW_IF = tlm_fw_transport_if<>,
          typename BW_IF = tlm_bw_transport_if<> >
class tlm_base_target_socket_b
{
public:
  virtual ~tlm_base_target_socket_b() {}

  virtual sc_core::sc_port_b<BW_IF> & get_base_port() = 0;
  virtual sc_core::sc_export<FW_IF> & get_base_export() = 0;
  virtual                    FW_IF  & get_base_interface() = 0;
};

template <unsigned int BUSWIDTH,
          typename FW_IF,
          typename BW_IF> class tlm_base_initiator_socket_b;

template <unsigned int BUSWIDTH,
          typename FW_IF,
          typename BW_IF,
          int N,
          sc_core::sc_port_policy POL> class tlm_base_initiator_socket;

template <unsigned int BUSWIDTH = 32,
          typename FW_IF = tlm_fw_transport_if<>,
          typename BW_IF = tlm_bw_transport_if<>,
          int N = 1,
          sc_core::sc_port_policy POL = sc_core::SC_ONE_OR_MORE_BOUND>
class tlm_base_target_socket : public tlm_base_socket_if,
                               public tlm_base_target_socket_b<BUSWIDTH, FW_IF, BW_IF>,
                               public sc_core::sc_export<FW_IF>
{
public:
  typedef FW_IF fw_interface_type;
  typedef BW_IF bw_interface_type;
  typedef sc_core::sc_port<bw_interface_type, N , POL> port_type;

  typedef sc_core::sc_export<fw_interface_type> export_type;
  typedef tlm_base_initiator_socket_b<BUSWIDTH,
                                      fw_interface_type,
                                      bw_interface_type>  base_initiator_socket_type;

  typedef tlm_base_target_socket_b<BUSWIDTH,
                                   fw_interface_type,
                                   bw_interface_type> base_type;

  template <unsigned int, typename, typename, int, sc_core::sc_port_policy>
  friend class tlm_base_initiator_socket;

public:
  tlm_base_target_socket()
  : export_type(sc_core::sc_gen_unique_name("tlm_base_target_socket"))
  , m_port(sc_core::sc_gen_unique_name("tlm_base_target_socket_port"))
  {
  }

  explicit tlm_base_target_socket(const char* name)
  : export_type(name)
  , m_port(sc_core::sc_gen_unique_name((std::string(name) + "_port").c_str()))
  {
  }

  virtual const char* kind() const
  {
    return "tlm_base_target_socket";
  }

  //
  // Bind target socket to initiator socket
  // - Binds the port of the initiator socket to the export of the target
  //   socket
  // - Binds the port of the target socket to the export of the initiator
  //   socket
  //
  virtual void bind(base_initiator_socket_type& s)
  {
    // initiator.port -> target.export
    (s.get_base_port())(get_base_interface());
    // target.port -> initiator.export
    get_base_port()(s.get_base_interface());
  }

  void operator() (base_initiator_socket_type& s)
  {
    bind(s);
  }

  //
  // Bind target socket to target socket (hierarchical bind)
  // - Binds both the export and the port
  //
  virtual void bind(base_type& s)
  {
    // export
    (get_base_export())(s.get_base_export());
    // port
    (s.get_base_port())(get_base_port());
  }

  void operator() (base_type& s)
  {
    bind(s);
  }

  //
  // Bind interface to socket
  // - Binds the interface to the export
  //
  virtual void bind(fw_interface_type& ifs)
  {
    export_type* exp = &get_base_export();
    if( this == exp ) {
      export_type::bind( ifs ); // non-virtual function call
    } else {
      exp->bind( ifs );
    }
  }

  void operator() (fw_interface_type& s)
  {
    bind(s);
  }

  //
  // Forward to 'size()' of port class
  //
  int size() const
  {
    return m_port.size();
  }

  //
  // Forward to 'operator->()' of port class
  //
  bw_interface_type* operator->()
  {
    return m_port.operator->();
  }

  //
  // Forward to 'operator[]()' of port class
  //
  bw_interface_type* operator[](int i)
  {
    return m_port.operator[](i);
  }

  // Implementation of tlm_base_socket_if functions
  virtual sc_core::sc_port_base &         get_port_base()
    { return m_port; }
  virtual sc_core::sc_port_base const &   get_port_base() const
    { return m_port; }
  virtual sc_core::sc_export_base &       get_export_base()
    { return *this; }
  virtual sc_core::sc_export_base const & get_export_base() const
    { return *this; }
  virtual unsigned int                    get_bus_width() const
    { return BUSWIDTH; }
  virtual tlm_socket_category             get_socket_category() const
    { return TLM_TARGET_SOCKET; }

  // Implementation of tlm_base_target_socket_b functions
  virtual sc_core::sc_port_b<BW_IF> &       get_base_port()
    { return m_port; }
  virtual sc_core::sc_port_b<BW_IF> const & get_base_port() const
    { return m_port; }

  virtual                    FW_IF  &       get_base_interface()
    { return *this; }
  virtual                    FW_IF  const & get_base_interface() const
    { return *this; }

  virtual sc_core::sc_export<FW_IF> &       get_base_export()
    { return *this; }
  virtual sc_core::sc_export<FW_IF> const & get_base_export() const
    { return *this; }

protected:
  port_type m_port;
};


//
// Convenience blocking and non-blocking socket classes
//

template <unsigned int BUSWIDTH = 32,
          typename TYPES = tlm_base_protocol_types,
          int N = 1,
          sc_core::sc_port_policy POL = sc_core::SC_ONE_OR_MORE_BOUND>
class tlm_target_socket :
  public tlm_base_target_socket <BUSWIDTH,
                            tlm_fw_transport_if<TYPES>,
                            tlm_bw_transport_if<TYPES>,
                            N, POL>
{
public:
  tlm_target_socket() :
    tlm_base_target_socket<BUSWIDTH,
                      tlm_fw_transport_if<TYPES>,
                      tlm_bw_transport_if<TYPES>,
                      N, POL>()
  {
  }

  explicit tlm_target_socket(const char* name) :
    tlm_base_target_socket<BUSWIDTH,
                      tlm_fw_transport_if<TYPES>,
                      tlm_bw_transport_if<TYPES>,
                      N, POL>(name)
  {
  }

  virtual const char* kind() const
  {
    return "tlm_target_socket";
  }

  virtual sc_core::sc_type_index get_protocol_types() const
  {
    return typeid(TYPES);
  }
};

} // namespace tlm

#endif // TLM_CORE_TLM_TARGET_SOCKET_H_INCLUDED_