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//
// Copyright 2019 Ettus Research, a National Instruments brand
//
// SPDX-License-Identifier: GPL-3.0-or-later
//
#include <uhd/config.hpp>
#include <uhd/utils/log.hpp>
#include <uhd/utils/static.hpp>
#include <uhdlib/transport/adapter.hpp>
#include <uhdlib/transport/liberio_link.hpp>
#include <sys/syslog.h>
#include <memory>
namespace uhd { namespace transport {
using liberio_ctx_sptr = std::shared_ptr<liberio_ctx>;
static const uint64_t USEC = 1000000;
static void liberio_log_cb(int severity, const char* msg, void*)
{
switch (severity) {
case LOG_WARNING:
UHD_LOG_WARNING("LIBERIO", msg);
return;
case LOG_NOTICE:
case LOG_INFO:
UHD_LOG_INFO("LIBERIO", msg);
return;
default:
UHD_LOG_INFO("LIBERIO", msg);
};
}
class liberio_context_holder
{
public:
UHD_SINGLETON_FCN(liberio_context_holder, get);
inline struct liberio_chan* alloc_tx_chan(const std::string& path)
{
return liberio_ctx_alloc_chan(_ctx, path.c_str(), TX, USRP_MEMORY_MMAP);
}
inline struct liberio_chan* alloc_rx_chan(const std::string& path)
{
return liberio_ctx_alloc_chan(_ctx, path.c_str(), RX, USRP_MEMORY_MMAP);
}
private:
liberio_context_holder(void)
{
_ctx = liberio_ctx_new();
liberio_ctx_register_logger(_ctx, &liberio_log_cb, nullptr);
}
~liberio_context_holder(void)
{
liberio_ctx_put(_ctx);
}
liberio_ctx* _ctx;
};
liberio_link::liberio_link(
const std::string& tx_path, const std::string& rx_path, const link_params_t& params)
: recv_link_base_t(params.num_recv_frames, params.recv_frame_size)
, send_link_base_t(params.num_send_frames, params.send_frame_size)
{
auto& ctx_holder = liberio_context_holder::get();
/* Allocate TX channel (begins with refcount of 1)
*/
_tx_chan = ctx_holder.alloc_tx_chan(tx_path);
UHD_ASSERT_THROW(_tx_chan);
/* Reset channel */
liberio_chan_stop_streaming(_tx_chan);
liberio_chan_request_buffers(_tx_chan, 0);
UHD_ASSERT_THROW(!liberio_chan_set_fixed_size(_tx_chan, 0, params.send_frame_size));
UHD_ASSERT_THROW(!liberio_chan_request_buffers(_tx_chan, params.num_send_frames));
/* TODO: Check params in factory and adjust them there instead of throwing exception
* here? */
UHD_ASSERT_THROW(params.num_send_frames == liberio_chan_get_num_bufs(_tx_chan));
for (size_t i = 0; i < params.num_send_frames; i++) {
_send_buffs.push_back(liberio_frame_buff(_tx_chan));
}
/* Allocate RX channel (begins with refcount of 1)
*/
_rx_chan = ctx_holder.alloc_rx_chan(rx_path);
UHD_ASSERT_THROW(_rx_chan);
/* stop the channel, free the buffers, set the size, allocate */
liberio_chan_stop_streaming(_rx_chan);
liberio_chan_request_buffers(_rx_chan, 0);
UHD_ASSERT_THROW(!liberio_chan_set_fixed_size(_rx_chan, 0, params.recv_frame_size));
UHD_ASSERT_THROW(!liberio_chan_request_buffers(_rx_chan, params.num_recv_frames));
/* TODO: Check params in factory and adjust them there instead of throwing exception
* here? */
UHD_ASSERT_THROW(params.num_recv_frames == liberio_chan_get_num_bufs(_rx_chan));
for (size_t i = 0; i < params.num_recv_frames; i++) {
_recv_buffs.push_back(liberio_frame_buff(_rx_chan));
}
UHD_ASSERT_THROW(!liberio_chan_enqueue_all(_rx_chan));
/* Start streaming on the devices */
liberio_chan_start_streaming(_rx_chan);
liberio_chan_start_streaming(_tx_chan);
/* Finally, preload the buffer pools in parent class */
for (auto& buff : _send_buffs) {
send_link_base_t::preload_free_buff(&buff);
}
for (auto& buff : _recv_buffs) {
recv_link_base_t::preload_free_buff(&buff);
}
auto info = liberio_adapter_info();
auto& adap_ctx = adapter_ctx::get();
_adapter_id = adap_ctx.register_adapter(info);
UHD_LOGGER_TRACE("LIBERIO")
<< boost::format("Created liberio link (tx:%s, rx:%s)") % tx_path % rx_path;
UHD_LOGGER_TRACE("LIBERIO")
<< boost::format("num_recv_frames=%d, recv_frame_size=%d, num_send_frames=%d, "
"send_frame_size=%d")
% params.num_recv_frames % params.recv_frame_size % params.num_send_frames
% params.send_frame_size;
}
liberio_link::~liberio_link()
{
liberio_chan_put(_tx_chan);
liberio_chan_put(_rx_chan);
}
liberio_link::sptr liberio_link::make(
const std::string& tx_path, const std::string& rx_path, const link_params_t& params)
{
UHD_ASSERT_THROW(params.recv_frame_size > 0);
UHD_ASSERT_THROW(params.send_frame_size > 0);
UHD_ASSERT_THROW(params.num_send_frames > 0);
UHD_ASSERT_THROW(params.num_recv_frames > 0);
return std::make_shared<liberio_link>(tx_path, rx_path, params);
}
}} // namespace uhd::transport
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