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//
// Copyright 2013 Ettus Research LLC
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
#include <uhd/transport/nirio/niusrprio_session.h>
#include <uhd/transport/nirio/nirio_fifo.h>
#include <uhd/transport/nirio/status.h>
#include <boost/format.hpp>
#include <boost/algorithm/string.hpp>
#include <boost/lexical_cast.hpp>
#include <stdio.h>
#include <fstream>
//@TODO: Move the register defs required by the class to a common location
#include "../../usrp/x300/x300_regs.hpp"
namespace uhd { namespace niusrprio {
niusrprio_session::niusrprio_session(const std::string& resource_name, const std::string& rpc_port_name) :
_resource_name(resource_name),
_session_open(false),
_resource_manager(_riok_proxy),
_rpc_client("localhost", rpc_port_name)
{
}
niusrprio_session::~niusrprio_session()
{
close();
}
nirio_status niusrprio_session::enumerate(const std::string& rpc_port_name, device_info_vtr& device_info_vtr)
{
usrprio_rpc::usrprio_rpc_client temp_rpc_client("localhost", rpc_port_name);
nirio_status status = temp_rpc_client.get_ctor_status();
nirio_status_chain(temp_rpc_client.niusrprio_enumerate(device_info_vtr), status);
return status;
}
nirio_status niusrprio_session::open(
nifpga_lvbitx::sptr lvbitx,
bool force_download)
{
boost::unique_lock<boost::recursive_mutex> lock(_session_mutex);
_lvbitx = lvbitx;
nirio_status status = NiRio_Status_Success;
std::string bitfile_path(_lvbitx->get_bitfile_path());
std::string signature(_lvbitx->get_signature());
//Make sure that the RPC client connected to the server properly
nirio_status_chain(_rpc_client.get_ctor_status(), status);
//Get a handle to the kernel driver
nirio_status_chain(_rpc_client.niusrprio_get_interface_path(_resource_name, _interface_path), status);
nirio_status_chain(_riok_proxy.open(_interface_path), status);
if (nirio_status_not_fatal(status)) {
//Bitfile build for a particular LVFPGA interface will have the same signature
//because the API of the bitfile does not change. Two files with the same signature
//can however have different bitstreams because of non-LVFPGA code differences.
//That is why we need another identifier to qualify the signature. The BIN
//checksum is a good candidate.
std::string lvbitx_checksum(_lvbitx->get_bitstream_checksum());
boost::uint16_t download_fpga = (force_download || (_read_bitstream_checksum() != lvbitx_checksum)) ? 1 : 0;
nirio_status_chain(_rpc_client.niusrprio_open_session(
_resource_name, bitfile_path, signature, download_fpga), status);
_session_open = nirio_status_not_fatal(status);
if (nirio_status_not_fatal(status)) {
nirio_register_info_vtr reg_vtr;
nirio_fifo_info_vtr fifo_vtr;
_lvbitx->init_register_info(reg_vtr);
_lvbitx->init_fifo_info(fifo_vtr);
_resource_manager.initialize(reg_vtr, fifo_vtr);
nirio_status_chain(_verify_signature(), status);
nirio_status_chain(_write_bitstream_checksum(lvbitx_checksum), status);
}
}
return status;
}
void niusrprio_session::close(bool skip_reset)
{
boost::unique_lock<boost::recursive_mutex> lock(_session_mutex);
if (_session_open) {
nirio_status status = NiRio_Status_Success;
if (!skip_reset) reset();
nirio_status_chain(_rpc_client.niusrprio_close_session(_resource_name), status);
_session_open = false;
}
}
nirio_status niusrprio_session::reset()
{
boost::unique_lock<boost::recursive_mutex> lock(_session_mutex);
return _rpc_client.niusrprio_reset_device(_resource_name);
}
nirio_status niusrprio_session::download_bitstream_to_flash(const std::string& bitstream_path)
{
boost::unique_lock<boost::recursive_mutex> lock(_session_mutex);
return _rpc_client.niusrprio_download_fpga_to_flash(_resource_name, bitstream_path);
}
niriok_proxy::sptr niusrprio_session::create_kernel_proxy(
const std::string& resource_name,
const std::string& rpc_port_name)
{
usrprio_rpc::usrprio_rpc_client temp_rpc_client("localhost", rpc_port_name);
nirio_status status = temp_rpc_client.get_ctor_status();
std::string interface_path;
nirio_status_chain(temp_rpc_client.niusrprio_get_interface_path(resource_name, interface_path), status);
niriok_proxy::sptr proxy;
if (nirio_status_not_fatal(status)) {
proxy.reset(new niriok_proxy());
if (proxy) nirio_status_chain(proxy->open(interface_path), status);
}
return proxy;
}
nirio_status niusrprio_session::_verify_signature()
{
//Validate the signature using the kernel proxy
nirio_status status = NiRio_Status_Success;
boost::uint32_t sig_offset = 0;
nirio_status_chain(_riok_proxy.get_attribute(DEFAULT_FPGA_SIGNATURE_OFFSET, sig_offset), status);
niriok_scoped_addr_space(_riok_proxy, FPGA, status);
std::string signature;
for (boost::uint32_t i = 0; i < 8; i++) {
boost::uint32_t quarter_sig;
nirio_status_chain(_riok_proxy.peek(sig_offset, quarter_sig), status);
signature += boost::str(boost::format("%08x") % quarter_sig);
}
std::string expected_signature(_lvbitx->get_signature());
boost::to_upper(signature);
boost::to_upper(expected_signature);
if (signature.find(expected_signature) == std::string::npos) {
nirio_status_chain(NiRio_Status_SignatureMismatch, status);
}
return status;
}
std::string niusrprio_session::_read_bitstream_checksum()
{
nirio_status status = NiRio_Status_Success;
niriok_scoped_addr_space(_riok_proxy, BUS_INTERFACE, status);
std::string usr_signature;
for (boost::uint32_t i = 0; i < FPGA_USR_SIG_REG_SIZE; i+=4) {
boost::uint32_t quarter_sig;
nirio_status_chain(_riok_proxy.peek(FPGA_USR_SIG_REG_BASE + i, quarter_sig), status);
usr_signature += boost::str(boost::format("%08x") % quarter_sig);
}
boost::to_upper(usr_signature);
return usr_signature;
}
nirio_status niusrprio_session::_write_bitstream_checksum(const std::string& checksum)
{
nirio_status status = NiRio_Status_Success;
niriok_scoped_addr_space(_riok_proxy, BUS_INTERFACE, status);
for (boost::uint32_t i = 0; i < FPGA_USR_SIG_REG_SIZE; i+=4) {
boost::uint32_t quarter_sig;
try {
std::stringstream ss;
ss << std::hex << checksum.substr(i*2,8);
ss >> quarter_sig;
} catch (std::exception&) {
quarter_sig = 0;
}
nirio_status_chain(_riok_proxy.poke(FPGA_USR_SIG_REG_BASE + i, quarter_sig), status);
}
return status;
}
}}
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