lt_dmi_top.cpp

SystemC Transaction Level Modelling. 是基于SystemC之上的总线互联协议

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//==============================================================================
/// @file lt_dmi_top.cpp
//
/// @brief Very Basic Loosley Timed (blocking) example with DMI
//
/// @details This class instantiates components that compose the lt_dmi 
///        example system. A demonstration of the blocking interface for
//         TLM 2.0. The same (or similar) block diagram is created 
///        for additional examples, but with different components
//
//==============================================================================
//
//  Authors:
//    Jack Donovan, ESLX
//    Charls Wilson, ESLX
//    Anna Keist, ESLX
//
//==============================================================================
#include "lt_dmi_top.h"           	// example system top header

//==============================================================================
///  @fn lt_dmi_top::lt_dmi_top
//
///  @brief Constructor for the top module for an LT example with DMI
///  @details
///    The construcor method 
///       1. initializes the instantiated components
///       2. calls the bind methods to connect the example components 
//
//==============================================================================

SC_HAS_PROCESS(lt_dmi_top);

lt_dmi_top::lt_dmi_top  
( sc_core::sc_module_name name             
)
  : sc_core::sc_module                      /// Init SC base
    ( name                                 
    )
  , m_bus                                   /// Init Simple Bus
    ( "m_bus"                              
    )
  , m_simulation_limit(1000000, sc_core::SC_NS) ///< simulation time limit
  , m_lt_dmi_target_1                       /// Init target with support for DMI
    ( "m_lt_dmi_target_1"                   // instance name
    , 201                                   // 1st Target ID is 201
    , "memory_socket_1"                     // socket name
    , 4*1024                                // memory size (bytes)
    , 4                                     // memory width (bytes)
    , sc_core::sc_time(20, sc_core::SC_NS)  // accept delay
    , sc_core::sc_time(20, sc_core::SC_NS)  // read response delay
    , sc_core::sc_time(15, sc_core::SC_NS)  // write response delay
    )
  , m_lt_dmi_target_2                       /// Init Target with support for DMI
    ( "m_lt_dmi_target_2"                   // instance name
    , 202                                   // 2nd Target ID is 202
    , "memory_socket_2"                     // socket name
    , 4*1024                                // memory size (bytes)
    , 4                                     // memory width (bytes)
    , sc_core::sc_time(20, sc_core::SC_NS)  // accept delay
    , sc_core::sc_time(50, sc_core::SC_NS)  // read response delay
    , sc_core::sc_time(30, sc_core::SC_NS)  // write response delay
    )
  , m_initiator_1                           /// LT instance with DMI
    ( "m_initiator_1"                       // instance name
    , 101                                   // 1st Initiator ID is 101
    , 0x0000000000000000                    // fitst base address
    , 0x0000000010000000                    // second base address                       
    )
  , m_initiator_2                           /// LT instance with DMI
    ( "m_initiator_2"                       // instance name
    , 102                                   // 2nd Initiator ID is 102
    , 0x0000000000000000                    // fitst base address
    , 0x0000000010000000                    // second base address
    )
{
  // register the time limiter
  SC_THREAD(limit_thread);

  /// bind TLM2 initiators to TLM2 target sockets on SimpleBus
  m_initiator_1.top_initiator_socket(m_bus.target_socket[0]);
  m_initiator_2.top_initiator_socket(m_bus.target_socket[1]);

  /// bind TLM2 targets to TLM2 initiator sockets on SimpleBus
  m_bus.initiator_socket[0](m_lt_dmi_target_1.m_memory_socket);
  m_bus.initiator_socket[1](m_lt_dmi_target_2.m_memory_socket);
}

void
lt_dmi_top::limit_thread                    ///< limit_thread
( void
)
{
  sc_core::wait ( sc_core::SC_ZERO_TIME );  // Only after simulation initialized
  
  sc_core::wait ( m_simulation_limit );     // Limit simulation time
  
  sc_core::sc_stop ();                      // Ensure end_of_simulation called
}