lt_dmi_target.h

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

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//=====================================================================
/// @file lt_dmi_target.h
//
/// @brief special target to illustrate dmi access to memory
//
//=====================================================================
//  Original Authors:
//   Jack Donovan, ESLX
//   Charles Wilson, ESLX
//=====================================================================

#ifndef __LT_DMI_TARGET_H__ 
#define __LT_DMI_TARGET_H__

#include "tlm.h"                                // TLM headers
#include "memory.h"
#include "tlm_utils/simple_target_socket.h"

class lt_dmi_target                      
:         public sc_core::sc_module           	/// inherit from SC module base clase
{
// Member Methods =====================================================
	
  public:	  
//=====================================================================
///	@fn lt_dmi_target
///
///	@brief Constructor for Single Phase AT target
///
///	@details
///		Generic Single Phase target used in several examples.
///		Constructor offers several parameters for customization	
///
//=====================================================================
  
  lt_dmi_target                          
  ( sc_core::sc_module_name   module_name           ///< SC module name
  , const unsigned int        ID                    ///< target ID
  , const char                *memory_socket        ///< socket name
  , sc_dt::uint64             memory_size           ///< memory size (bytes)
  , unsigned int              memory_width          ///< memory width (bytes)
  , const sc_core::sc_time    accept_delay          ///< accept delay (SC_TIME, SC_NS)
  , const sc_core::sc_time    read_response_delay   ///< read response delay (SC_TIME, SC_NS)
  , const sc_core::sc_time    write_response_delay  ///< write response delay (SC_TIME, SC_NS)
  , const sc_core::sc_time    start_dmi_delay = sc_core::sc_time(100,sc_core::SC_NS)
  , const sc_core::sc_time    dmi_duration    = sc_core::sc_time(1000,sc_core::SC_NS)
  );
 
   void toggle_dmi_method(void);

  private:
	    
//==============================================================================
// Methods not Implemented for this Example
  
/// b_transport() - Blocking Transport
  void                                                // returns nothing 
  custom_b_transport
  ( tlm::tlm_generic_payload  &payload                // ref to payload 
  , sc_core::sc_time          &delay_time             // delay time 
  );


/// Implemented for this example but required by interface
  bool                                              // success / failure
  get_direct_mem_ptr                       
  ( tlm::tlm_generic_payload   &payload,            // address + extensions
    tlm::tlm_dmi               &dmi_data            // DMI data
  );

// Member Variables ===================================================
  
  public:  
	  
  typedef tlm::tlm_generic_payload  *gp_ptr;		///< generic payload pointer
  
    tlm_utils::simple_target_socket<lt_dmi_target>  m_memory_socket; ///<  target socket

  private:
	  
  const unsigned int        m_ID;                   ///< target ID
        sc_dt::uint64       m_memory_size;          ///< memory size (bytes)
        unsigned int        m_memory_width;         ///< word size (bytes)
  const sc_core::sc_time    m_accept_delay;         ///< accept delay
  const sc_core::sc_time    m_read_response_delay;  ///< read response delay
  const sc_core::sc_time    m_write_response_delay; ///< write response delays
  
        bool                m_trans_dbg_prev_warning;
        
        bool                m_dmi_enabled;
  const sc_core::sc_time    m_start_dmi_delay;
  const sc_core::sc_time    m_dmi_duration;
        sc_dt::uint64       m_start_address;
        sc_dt::uint64       m_end_address;
         
        sc_core::sc_event   m_end_resp_rcvd_event;
        unsigned int        m_toggle_count;
  const unsigned int        m_max_dmi_toggle_count;
  
        memory              m_target_memory;
};


#endif /* __LT_DMI_TARGET_H__ */