112922Sgabeblack@google.com/*****************************************************************************
212922Sgabeblack@google.com
312922Sgabeblack@google.com  Licensed to Accellera Systems Initiative Inc. (Accellera) under one or
412922Sgabeblack@google.com  more contributor license agreements.  See the NOTICE file distributed
512922Sgabeblack@google.com  with this work for additional information regarding copyright ownership.
612922Sgabeblack@google.com  Accellera licenses this file to you under the Apache License, Version 2.0
712922Sgabeblack@google.com  (the "License"); you may not use this file except in compliance with the
812922Sgabeblack@google.com  License.  You may obtain a copy of the License at
912922Sgabeblack@google.com
1012922Sgabeblack@google.com    http://www.apache.org/licenses/LICENSE-2.0
1112922Sgabeblack@google.com
1212922Sgabeblack@google.com  Unless required by applicable law or agreed to in writing, software
1312922Sgabeblack@google.com  distributed under the License is distributed on an "AS IS" BASIS,
1412922Sgabeblack@google.com  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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1612922Sgabeblack@google.com  permissions and limitations under the License.
1712922Sgabeblack@google.com
1812922Sgabeblack@google.com *****************************************************************************/
1912922Sgabeblack@google.com
2012922Sgabeblack@google.com#ifndef __EXPLICIT_LT_TARGET_H__
2112922Sgabeblack@google.com#define __EXPLICIT_LT_TARGET_H__
2212922Sgabeblack@google.com
2312922Sgabeblack@google.com#include "tlm.h"
2412922Sgabeblack@google.com#include "tlm_utils/simple_target_socket.h"
2512922Sgabeblack@google.com//#include <systemc>
2612922Sgabeblack@google.com#include <cassert>
2712922Sgabeblack@google.com#include <vector>
2812922Sgabeblack@google.com#include <queue>
2912922Sgabeblack@google.com//#include <iostream>
3012922Sgabeblack@google.com
3112922Sgabeblack@google.comclass ExplicitLTTarget : public sc_core::sc_module
3212922Sgabeblack@google.com{
3312922Sgabeblack@google.compublic:
3412922Sgabeblack@google.com  typedef tlm::tlm_generic_payload                 transaction_type;
3512922Sgabeblack@google.com  typedef tlm::tlm_phase                           phase_type;
3612922Sgabeblack@google.com  typedef tlm::tlm_sync_enum                       sync_enum_type;
3712922Sgabeblack@google.com  typedef tlm_utils::simple_target_socket<ExplicitLTTarget>     target_socket_type;
3812922Sgabeblack@google.com
3912922Sgabeblack@google.compublic:
4012922Sgabeblack@google.com  target_socket_type socket;
4112922Sgabeblack@google.com
4212922Sgabeblack@google.compublic:
4312922Sgabeblack@google.com  SC_HAS_PROCESS(ExplicitLTTarget);
4412922Sgabeblack@google.com  ExplicitLTTarget(sc_core::sc_module_name name) :
4512922Sgabeblack@google.com    sc_core::sc_module(name),
4612922Sgabeblack@google.com    socket("socket")
4712922Sgabeblack@google.com  {
4812922Sgabeblack@google.com    // register nb_transport method
4912922Sgabeblack@google.com    socket.register_b_transport(this, &ExplicitLTTarget::myBTransport);
5012922Sgabeblack@google.com    socket.register_transport_dbg(this, &ExplicitLTTarget::transport_dbg);
5112922Sgabeblack@google.com  }
5212922Sgabeblack@google.com
5312922Sgabeblack@google.com  void myBTransport(transaction_type& trans, sc_core::sc_time& t)
5412922Sgabeblack@google.com  {
5512922Sgabeblack@google.com    sc_dt::uint64 address = trans.get_address();
5612922Sgabeblack@google.com    assert(address < 400);
5712922Sgabeblack@google.com
5812922Sgabeblack@google.com    unsigned int& data = *reinterpret_cast<unsigned int*>(trans.get_data_ptr());
5912922Sgabeblack@google.com    if (trans.get_command() == tlm::TLM_WRITE_COMMAND) {
6012922Sgabeblack@google.com      std::cout << name() << ": Received write request: A = 0x"
6112922Sgabeblack@google.com                << std::hex << (unsigned int)address << ", D = 0x" << data
6212922Sgabeblack@google.com                << std::dec << " @ " << sc_core::sc_time_stamp()
6312922Sgabeblack@google.com                << std::endl;
6412922Sgabeblack@google.com
6512922Sgabeblack@google.com      *reinterpret_cast<unsigned int*>(&mMem[address]) = data;
6612922Sgabeblack@google.com
6712922Sgabeblack@google.com      // Synchronization on demand (eg need to assert an interrupt)
6812922Sgabeblack@google.com      // Wait for passed timing annotation + wait for an extra 50 ns
6912922Sgabeblack@google.com      wait(t + sc_core::sc_time(50, sc_core::SC_NS));
7012922Sgabeblack@google.com      t = sc_core::SC_ZERO_TIME;
7112922Sgabeblack@google.com
7212922Sgabeblack@google.com      // We are synchronized, we can read/write sc_signals, wait,...
7312922Sgabeblack@google.com
7412922Sgabeblack@google.com      *reinterpret_cast<unsigned int*>(trans.get_data_ptr()) =
7512922Sgabeblack@google.com        *reinterpret_cast<unsigned int*>(&mMem[address]);
7612922Sgabeblack@google.com
7712922Sgabeblack@google.com    } else {
7812922Sgabeblack@google.com      std::cout << name() << ": Received read request: A = 0x"
7912922Sgabeblack@google.com                << std::hex << (unsigned int)address
8012922Sgabeblack@google.com                << std::dec << " @ " << sc_core::sc_time_stamp()
8112922Sgabeblack@google.com                << std::endl;
8212922Sgabeblack@google.com
8312922Sgabeblack@google.com      data = *reinterpret_cast<unsigned int*>(&mMem[address]);
8412922Sgabeblack@google.com
8512922Sgabeblack@google.com      // Finish transaction (use timing annotation)
8612922Sgabeblack@google.com      t += sc_core::sc_time(100, sc_core::SC_NS);
8712922Sgabeblack@google.com    }
8812922Sgabeblack@google.com
8912922Sgabeblack@google.com    trans.set_response_status(tlm::TLM_OK_RESPONSE);
9012922Sgabeblack@google.com  }
9112922Sgabeblack@google.com
9212922Sgabeblack@google.com  unsigned int transport_dbg(transaction_type& r)
9312922Sgabeblack@google.com  {
9412922Sgabeblack@google.com    if (r.get_address() >= 400) return 0;
9512922Sgabeblack@google.com
9612922Sgabeblack@google.com    unsigned int tmp = (int)r.get_address();
9712922Sgabeblack@google.com    unsigned int num_bytes;
9812922Sgabeblack@google.com    if (tmp + r.get_data_length() >= 400) {
9912922Sgabeblack@google.com      num_bytes = 400 - tmp;
10012922Sgabeblack@google.com
10112922Sgabeblack@google.com    } else {
10212922Sgabeblack@google.com      num_bytes = r.get_data_length();
10312922Sgabeblack@google.com    }
10412922Sgabeblack@google.com    if (!r.is_read() && !r.is_write()) {
10512922Sgabeblack@google.com      return 0;
10612922Sgabeblack@google.com	}
10712922Sgabeblack@google.com    if (r.is_read()) {
10812922Sgabeblack@google.com      for (unsigned int i = 0; i < num_bytes; ++i) {
10912922Sgabeblack@google.com        r.get_data_ptr()[i] = mMem[i + tmp];
11012922Sgabeblack@google.com      }
11112922Sgabeblack@google.com
11212922Sgabeblack@google.com    } else {
11312922Sgabeblack@google.com      for (unsigned int i = 0; i < num_bytes; ++i) {
11412922Sgabeblack@google.com        mMem[i + tmp] = r.get_data_ptr()[i];
11512922Sgabeblack@google.com      }
11612922Sgabeblack@google.com    }
11712922Sgabeblack@google.com    return num_bytes;
11812922Sgabeblack@google.com  }
11912922Sgabeblack@google.com
12012922Sgabeblack@google.comprivate:
12112922Sgabeblack@google.com  unsigned char mMem[400];
12212922Sgabeblack@google.com};
12312922Sgabeblack@google.com
12412922Sgabeblack@google.com#endif
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