SimpleLTInitiator1.h

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//====================================================================
//  Nov 06, 2008
//
//  Updated by:
//    Xiaopeng Qiu, JEDA Technologies, Inc
//    Email:  qiuxp@jedatechnologies.net
//
//  To fix violations of TLM2.0 rules, which are detected by JEDA 
//  TLM2.0 checker.
//
//====================================================================

#ifndef __SIMPLE_LT_INITIATOR1_H__
#define __SIMPLE_LT_INITIATOR1_H__

#include "tlm.h"     
#include <cassert>   

class SimpleLTInitiator1 :
  public sc_core::sc_module,
  public virtual tlm::tlm_bw_transport_if<>
{
public:
  typedef tlm::tlm_generic_payload        transaction_type;
  typedef tlm::tlm_phase                  phase_type;
  typedef tlm::tlm_sync_enum              sync_enum_type;
  typedef tlm::tlm_fw_transport_if<>      fw_interface_type;
  typedef tlm::tlm_bw_transport_if<>      bw_interface_type;
  typedef tlm::tlm_initiator_socket<32>   initiator_socket_type;

public:
  initiator_socket_type socket;

public:
  SC_HAS_PROCESS(SimpleLTInitiator1);
  SimpleLTInitiator1(sc_core::sc_module_name name,
                  unsigned int nrOfTransactions = 0x5,
                  unsigned int baseAddress = 0x0) :
    sc_core::sc_module(name),
    socket("socket"),
    mNrOfTransactions(nrOfTransactions),
    mBaseAddress(baseAddress),
    mTransactionCount(0)
  {
    // Bind this initiator's interface to the initiator socket
    socket(*this);

    // Initiator thread
    SC_THREAD(run);
  }

  bool initTransaction(transaction_type& trans)
  {
    if (mTransactionCount < mNrOfTransactions) {
      trans.set_address(mBaseAddress + 4*mTransactionCount);
      mData = mTransactionCount;
      trans.set_command(tlm::TLM_WRITE_COMMAND);

    } else if (mTransactionCount < 2 * mNrOfTransactions) {
      trans.set_address(mBaseAddress + 4*(mTransactionCount - mNrOfTransactions));
      mData = 0;
      trans.set_command(tlm::TLM_READ_COMMAND);

    } else {
      return false;
    }

    trans.set_data_ptr(reinterpret_cast<unsigned char*>(&mData));
    trans.set_data_length(4);
    trans.set_streaming_width(4);
    trans.set_dmi_allowed(false);
    trans.set_response_status(tlm::TLM_INCOMPLETE_RESPONSE);

    ++mTransactionCount;
    return true;
  }

  void logStartTransation(transaction_type& trans)
  {
    if (trans.get_command() == tlm::TLM_WRITE_COMMAND) {
      std::cout << name() << ": Send write request: A = 0x"
                << std::hex << (unsigned int)trans.get_address()
                << ", D = 0x" << mData << std::dec
                << " @ " << sc_core::sc_time_stamp() << std::endl;

    } else {
      std::cout << name() << ": Send read request: A = 0x"
                << std::hex << (unsigned int)trans.get_address() << std::dec
                << " @ " << sc_core::sc_time_stamp() << std::endl;
    }
  }

  void logEndTransaction(transaction_type& trans)
  {
    if (trans.get_response_status() != tlm::TLM_OK_RESPONSE) {
      std::cout << name() << ": Received error response @ "
                << sc_core::sc_time_stamp() << std::endl;

    } else {
      std::cout << name() <<  ": Received ok response";
      if (trans.get_command() == tlm::TLM_READ_COMMAND) {
        std::cout << ": D = 0x" << std::hex << mData << std::dec;
      }
      std::cout << " @ " << sc_core::sc_time_stamp() << std::endl;
    }
  }

  void run()
  {
    transaction_type trans;
    sc_core::sc_time t(sc_core::SC_ZERO_TIME);
    while (initTransaction(trans)) {
      logStartTransation(trans);
      socket->b_transport(trans, t);
      wait(t);
      logEndTransaction(trans);
      t = sc_core::SC_ZERO_TIME;
    }
    wait();

  }

  tlm::tlm_sync_enum nb_transport_bw(transaction_type &,phase_type &,sc_core::sc_time & )
  {
    assert(0);  // should never happen
    return tlm::TLM_COMPLETED;
  }

  void invalidate_direct_mem_ptr(sc_dt::uint64 start_range,
                                 sc_dt::uint64 end_range)
  {
    // No DMI support: ignore
  }

private:
  sc_core::sc_event mEndEvent;
  unsigned int mNrOfTransactions;
  unsigned int mBaseAddress;
  unsigned int mTransactionCount;
  unsigned int mData;
};

#endif