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debugdev.cc
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debugdev.cc
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/*
* A demo/debug device.
*
* Copyright (c) 2013 Xilinx Inc.
* Written by Edgar E. Iglesias
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#define SC_INCLUDE_DYNAMIC_PROCESSES
#include <inttypes.h>
#include "tlm_utils/simple_initiator_socket.h"
#include "tlm_utils/simple_target_socket.h"
using namespace sc_core;
using namespace std;
#include "debugdev.h"
#include <sys/types.h>
#include <time.h>
debugdev::debugdev(sc_module_name name)
: sc_module(name), socket("socket")
{
socket.register_b_transport(this, &debugdev::b_transport);
socket.register_transport_dbg(this, &debugdev::transport_dbg);
}
void debugdev::b_transport(tlm::tlm_generic_payload& trans, sc_time& delay)
{
tlm::tlm_command cmd = trans.get_command();
sc_dt::uint64 addr = trans.get_address();
unsigned char *data = trans.get_data_ptr();
unsigned int len = trans.get_data_length();
unsigned char *byt = trans.get_byte_enable_ptr();
unsigned int wid = trans.get_streaming_width();
if (byt != 0) {
trans.set_response_status(tlm::TLM_BYTE_ENABLE_ERROR_RESPONSE);
return;
}
if (len > 4 || wid < len) {
trans.set_response_status(tlm::TLM_BURST_ERROR_RESPONSE);
return;
}
trans.set_response_status(tlm::TLM_OK_RESPONSE);
// Pretend this is slow!
delay += sc_time(1, SC_US);
if (trans.get_command() == tlm::TLM_READ_COMMAND) {
sc_time now = sc_time_stamp() + delay;
uint32_t v = 0;
switch (addr) {
case 0:
// cout << "read " << addr << " " << t << endl;
v = now.to_seconds() * 1000 * 1000 * 1000;
break;
case 0xc:
v = irq.read();
break;
case 0x10:
v = clock();
break;
case 0xf0:
trans.set_response_status(tlm::TLM_ADDRESS_ERROR_RESPONSE);
break;
case 0xf4:
trans.set_response_status(tlm::TLM_GENERIC_ERROR_RESPONSE);
break;
default:
break;
}
memcpy(data, &v, len);
} else if (cmd == tlm::TLM_WRITE_COMMAND) {
static sc_time old_ts = SC_ZERO_TIME, now, diff;
now = sc_time_stamp() + delay;
diff = now - old_ts;
switch (addr) {
case 0:
cout << "TRACE: " << " "
<< hex << * (uint32_t *) data
<< " " << now << " diff=" << diff << "\n";
break;
case 0x4:
putchar(* (uint32_t *) data);
break;
case 0x8:
cout << "STOP: " << " "
<< hex << * (uint32_t *) data
<< " " << now << "\n";
sc_stop();
exit(1);
break;
case 0xc:
irq.write(data[0] & 1);
break;
case 0xf0:
trans.set_response_status(tlm::TLM_ADDRESS_ERROR_RESPONSE);
break;
case 0xf4:
trans.set_response_status(tlm::TLM_GENERIC_ERROR_RESPONSE);
break;
default:
break;
}
old_ts = now;
}
}
unsigned int debugdev::transport_dbg(tlm::tlm_generic_payload& trans)
{
unsigned int len = trans.get_data_length();
return len;
}