C++ tlm_generic_payload::set_dmi_allowed方法代码示例

void ram::custom_b_transport( tlm::tlm_generic_payload &payload, sc_core::sc_time &delay_time)
{
    sc_core::sc_time  mem_op_time;
    payload.set_dmi_allowed(m_dmi_on);
    m_target_memory.operation(payload, mem_op_time);
    return;
}

    //Method used for receiving acknowledgements of interrupts; the ack consists of
    //uninteresting data and the address corresponds to the interrupt signal to
    //be lowered
    //As a response, I lower the interrupt by sending a NULL pointer on the init_socket
    void b_transport(tlm::tlm_generic_payload& trans, sc_time& delay) {
        if(this->lastIrq < 0) {
            THROW_EXCEPTION("Error, lowering an interrupt which hasn't been raised yet!!");
        }
        tlm::tlm_command cmd = trans.get_command();
        sc_dt::uint64    adr = trans.get_address();
        unsigned char*   ptr = trans.get_data_ptr();
        if(trans.get_command() == tlm::TLM_READ_COMMAND) {
            THROW_EXCEPTION("Error, the read request is not currently supported by external PINs");
        }
        else if(cmd == tlm::TLM_WRITE_COMMAND) {
            if(this->lastIrq != adr) {
                THROW_EXCEPTION("Error, lowering interrupt " << std::hex << std::showbase << (unsigned)adr << " while " << std::hex << std::showbase << this->lastIrq << " was raised");
            }
            else {
                //finally I can really lower the interrupt: I send 0 on
                //the initSocked
                unsigned char data = 0;
                trans.set_data_ptr(&data);
                trans.set_dmi_allowed(false);
                trans.set_response_status( tlm::TLM_INCOMPLETE_RESPONSE );
                sc_time delay;
                this->init_socket->b_transport(trans, delay);
                if(trans.is_response_error()) {
                    std::string errorStr("Error in b_transport of PIN, response status = " + trans.get_response_string());
                    SC_REPORT_ERROR("TLM-2", errorStr.c_str());
                }

                this->lastIrq = -1;
            }
        }

        trans.set_response_status(tlm::TLM_OK_RESPONSE);
    }

  virtual void b_transport( tlm::tlm_generic_payload& trans, sc_time& delay )
  {
    tlm::tlm_command cmd = trans.get_command();
    unsigned char*   ptr = trans.get_data_ptr();
    unsigned int     len = trans.get_data_length();
    unsigned char*   byt = trans.get_byte_enable_ptr();
    unsigned int     bel = trans.get_byte_enable_length();

    my_extension* ext;
    trans.get_extension(ext);
    assert( ext );

    assert( len == ext->len );
    assert( bel == ext->bel );
    for (unsigned int i = 0; i < bel; i++)
      assert( byt[i] == ext->byt[i] );
    for (unsigned int i = 0; i < len; i++)
      assert( ptr[i] == ext->ptr[i] );

    if (cmd == tlm::TLM_READ_COMMAND)
    {
      for (unsigned int i = 0; i < len; i++)
      {
        data[i] = rand() % 256;
        ptr[i]  = data[i];
      }
      ext->ptr = data;
    }

    trans.set_dmi_allowed( true );
    trans.set_response_status( tlm::TLM_OK_RESPONSE );
  }

  // TLM-2 blocking transport method
  virtual void b_transport( tlm::tlm_generic_payload& trans, sc_time& delay )
  {
    tlm::tlm_command cmd = trans.get_command();
    sc_dt::uint64    adr = trans.get_address() / 4;
    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();

    // Obliged to check address range and check for unsupported features,
    //   i.e. byte enables, streaming, and bursts
    // Can ignore extensions

    // *********************************************
    // Generate the appropriate error response
    // *********************************************

    if (adr >= sc_dt::uint64(SIZE)) {
      trans.set_response_status( tlm::TLM_ADDRESS_ERROR_RESPONSE );
      return;
    }
    if (byt != 0) {
      trans.set_response_status( tlm::TLM_BYTE_ENABLE_ERROR_RESPONSE );
      return;
    }
    if (len > 4 || wid < len) {
      trans.set_response_status( tlm::TLM_BURST_ERROR_RESPONSE );
      return;
    }

    // Obliged to implement read and write commands
    if ( cmd == tlm::TLM_READ_COMMAND )
      memcpy(ptr, &mem[adr], len);
    else if ( cmd == tlm::TLM_WRITE_COMMAND )
      memcpy(&mem[adr], ptr, len);

    // Illustrates that b_transport may block
    wait(delay);

    // Reset timing annotation after waiting
    delay = SC_ZERO_TIME;

    // *********************************************
    // Set DMI hint to indicated that DMI is supported
    // *********************************************

    trans.set_dmi_allowed(true);

    // Obliged to set response status to indicate successful completion
    trans.set_response_status( tlm::TLM_OK_RESPONSE );
  }

//==============================================================================
//  b_transport implementation calls from initiators 
//
//=============================================================================
void                                        
lt_dmi_target::custom_b_transport
( tlm::tlm_generic_payload  &payload                // ref to  Generic Payload 
, sc_core::sc_time          &delay_time             // delay time 
)
{
  sc_core::sc_time      mem_op_time;
  std::ostringstream    msg;
  
  msg.str("");   

  m_target_memory.operation(payload, mem_op_time);

  if(m_dmi_enabled)
  {
    payload.set_dmi_allowed(true);
    msg << "Target: " << m_ID
        << " has set dmi_allowed " 
        << endl << "      ";
  }
  else
  {
    payload.set_dmi_allowed(false);
  }

  msg << "Target: " << m_ID
      << " returned delay of " << delay_time
      << " + " << m_accept_delay << " + " << mem_op_time;

  delay_time = delay_time + m_accept_delay + mem_op_time;

  msg << " = " << delay_time;
  REPORT_INFO(filename,  __FUNCTION__, msg.str());
  
  return;
}

bool ram::get_direct_mem_ptr(tlm::tlm_generic_payload &trans, tlm::tlm_dmi &dmi_data)
{
    sc_dt::uint64 address = trans.get_address();
    if (address > m_high_address) {
        // should not happen
        cerr << "ram::get_direct_mem_ptr: address overflow";
        return false;
    }

    // if (m_invalidate) m_invalidate_dmi_event.notify(m_invalidate_dmi_time);
    dmi_data.allow_read_write();
    dmi_data.set_start_address(0x0);
    dmi_data.set_end_address(m_high_address);

    unsigned char *ptr = m_target_memory.get_mem_ptr();
    trans.set_dmi_allowed(m_dmi_on);
    dmi_data.set_dmi_ptr(ptr);
    return true;
}

unsigned int  ram::debug_transport (tlm::tlm_generic_payload &payload)
{
    sc_core::sc_time  mem_op_time;
    payload.set_dmi_allowed(m_dmi_on);
    return m_target_memory.debug(payload, mem_op_time);
}