xref: /gem5/src/systemc/tests/include/CoreDecouplingLTInitiator.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 __CORE_DECOUPLING_LT_INITIATOR_H__
#define __CORE_DECOUPLING_LT_INITIATOR_H__

#include "tlm.h"
#include "tlm_utils/simple_initiator_socket.h"
#include "tlm_utils/tlm_quantumkeeper.h"
//#include <systemc>
#include <cassert>
//#include <iostream>

class CoreDecouplingLTInitiator : public sc_core::sc_module
{
public:
  typedef tlm::tlm_generic_payload                         transaction_type;
  typedef tlm_utils::simple_initiator_socket<CoreDecouplingLTInitiator> initiator_socket_type;

public:
  initiator_socket_type socket;

public:
  SC_HAS_PROCESS(CoreDecouplingLTInitiator);
  CoreDecouplingLTInitiator(sc_core::sc_module_name name,
                            unsigned int nrOfTransactions = 0x5,
                            unsigned int baseAddress = 0) :
    sc_core::sc_module(name),
    socket("socket"),
    mNrOfTransactions(nrOfTransactions),
    mBaseAddress(baseAddress),
    mTransactionCount(0)
  {
    tlm_utils::tlm_quantumkeeper::set_global_quantum(sc_core::sc_time(500, sc_core::SC_NS));
    mQuantumKeeper.reset();

    // 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_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
                << " @ " << mQuantumKeeper.get_current_time()
                << " (" << sc_core::sc_time_stamp() << " + "
                << mQuantumKeeper.get_local_time() << ")"
                << std::endl;

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

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

  void run()
  {
    transaction_type trans;

    while (initTransaction(trans)) {
      logStartTransation(trans);

      // exec instr
      sc_core::sc_time t = mQuantumKeeper.get_local_time();
      socket->b_transport(trans, t);
      mQuantumKeeper.set(t);
      // Target may have added a delay to the quantum -> sync if needed
      if (mQuantumKeeper.need_sync()) {
        std::cout << "Sync'ing..." << std::endl;
        mQuantumKeeper.sync();
      }

      logEndTransaction(trans);
    }
    wait();
  }

private:
  unsigned int mNrOfTransactions;
  unsigned int mBaseAddress;
  unsigned int mTransactionCount;
  unsigned int mData;
  tlm_utils::tlm_quantumkeeper mQuantumKeeper;
};

#endif