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/*****************************************************************************
Licensed to Accellera Systems Initiative Inc. (Accellera) under one or
more contributor license agreements. See the NOTICE file distributed
with this work for additional information regarding copyright ownership.
Accellera licenses this file to you under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with the
License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied. See the License for the specific language governing
permissions and limitations under the License.
*****************************************************************************/
#ifndef __SIMPLE_LT_TARGET1_H__
#define __SIMPLE_LT_TARGET1_H__
#include "tlm.h"
#include <cassert>
#include <vector>
class SimpleLTTarget1 :
public sc_core::sc_module,
public virtual tlm::tlm_fw_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_target_socket<32> target_socket_type;
public:
target_socket_type socket;
public:
SC_HAS_PROCESS(SimpleLTTarget1);
SimpleLTTarget1(sc_core::sc_module_name name, bool invalidate = false) :
sc_core::sc_module(name),
socket("socket"),
m_invalidate(invalidate)
{
// Bind this target's interface to the target socket
socket(*this);
if (invalidate)
{
SC_METHOD(invalidate_dmi_method);
sensitive << m_invalidate_dmi_event;
dont_initialize();
m_invalidate_dmi_time = sc_core::sc_time(25, sc_core::SC_NS);
}
}
sync_enum_type nb_transport_fw(transaction_type& trans, phase_type& phase, sc_core::sc_time& t)
{
//Target never calls wait, so we can do this
b_transport(trans, t);
return tlm::TLM_COMPLETED;
}
void b_transport(transaction_type& trans, sc_core::sc_time &t)
{
sc_dt::uint64 address = trans.get_address();
assert(address < 400);
unsigned int& data = *reinterpret_cast<unsigned int*>(trans.get_data_ptr());
if (trans.get_command() == tlm::TLM_WRITE_COMMAND) {
std::cout << name() << ": Received write request: A = 0x"
<< std::hex << (unsigned int)address
<< ", D = 0x" << data << std::dec
<< " @ " << sc_core::sc_time_stamp() << std::endl;
*reinterpret_cast<unsigned int*>(&mMem[address]) = data;
t+= sc_core::sc_time(10, sc_core::SC_NS);
} else {
std::cout << name() << ": Received read request: A = 0x"
<< std::hex << (unsigned int)address << std::dec
<< " @ " << sc_core::sc_time_stamp() << std::endl;
data = *reinterpret_cast<unsigned int*>(&mMem[address]);
t += sc_core::sc_time(100, sc_core::SC_NS);
}
trans.set_response_status(tlm::TLM_OK_RESPONSE);
trans.set_dmi_allowed(true);
}
unsigned int transport_dbg(transaction_type& r)
{
if (r.get_address() >= 400) return 0;
unsigned int tmp = (int)r.get_address();
unsigned int num_bytes;
if (tmp + r.get_data_length() >= 400) {
num_bytes = 400 - tmp;
} else {
num_bytes = r.get_data_length();
}
if (r.is_read()) {
for (unsigned int i = 0; i < num_bytes; ++i) {
r.get_data_ptr()[i] = mMem[i + tmp];
}
} else {
for (unsigned int i = 0; i < num_bytes; ++i) {
mMem[i + tmp] = r.get_data_ptr()[i];
}
}
return num_bytes;
}
bool get_direct_mem_ptr(transaction_type& trans,
tlm::tlm_dmi& dmi_data)
{
sc_dt::uint64 address = trans.get_address();
if (m_invalidate) m_invalidate_dmi_event.notify(m_invalidate_dmi_time);
if (address < 400) {
dmi_data.allow_read_write();
dmi_data.set_start_address(0x0);
dmi_data.set_end_address(399);
dmi_data.set_dmi_ptr(mMem);
dmi_data.set_read_latency(sc_core::sc_time(100, sc_core::SC_NS));
dmi_data.set_write_latency(sc_core::sc_time(10, sc_core::SC_NS));
return true;
} else {
// should not happen
dmi_data.set_start_address(trans.get_address());
dmi_data.set_end_address(trans.get_address());
return false;
}
}
void invalidate_dmi_method()
{
sc_dt::uint64 start_address = 0x0;
sc_dt::uint64 end_address = 399;
socket->invalidate_direct_mem_ptr(start_address, end_address);
}
private:
unsigned char mMem[400];
bool m_invalidate;
sc_core::sc_event m_invalidate_dmi_event;
sc_core::sc_time m_invalidate_dmi_time;
};
#endif
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