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//
// Copyright 2017 Ettus Research, a National Instruments Company
//
// SPDX-License-Identifier: GPL-3.0-or-later
//
#ifndef INCLUDED_MPMD_XPORT_CTRL_LIBERIO_HPP
#define INCLUDED_MPMD_XPORT_CTRL_LIBERIO_HPP
#include "mpmd_link_if_ctrl_base.hpp"
#include <uhd/types/device_addr.hpp>
namespace uhd { namespace mpmd { namespace xport {
/*! Liberio transport manager
*/
class mpmd_link_if_ctrl_liberio : public mpmd_link_if_ctrl_base
{
public:
/* For liberio, get_chdr_link_options returns information about DMA engines.
* We assume there is only ever one liberio link available
* first = tx path
* second = rx path
*/
using liberio_link_info_t = std::pair<std::string, std::string>;
mpmd_link_if_ctrl_liberio(const uhd::device_addr_t& mb_args,
const mpmd_link_if_mgr::xport_info_list_t& xport_info);
size_t get_num_links() const { return 1; }
uhd::transport::both_links_t get_link(
const size_t link_idx, const uhd::transport::link_type_t link_type,
const uhd::device_addr_t& link_args);
size_t get_mtu(const uhd::direction_t) const;
double get_link_rate(const size_t /*link_idx*/) const { return _link_rate; }
const uhd::rfnoc::chdr::chdr_packet_factory& get_packet_factory() const
{
return _pkt_factory;
}
private:
const uhd::device_addr_t _mb_args;
const uhd::dict<std::string, std::string> _recv_args;
const uhd::dict<std::string, std::string> _send_args;
//! A list of DMA channels we can use for links
std::vector<liberio_link_info_t> _dma_channels;
double _link_rate;
/*! An index representing the next DMA channel to use, for a simple
* allocation of channels. For get_link(), increment for each new link, and
* throw an exception if _next_channel > number of DMA channels.
*/
size_t _next_channel = 0;
static const uhd::rfnoc::chdr::chdr_packet_factory _pkt_factory;
};
}}} /* namespace uhd::mpmd::xport */
#endif /* INCLUDED_MPMD_XPORT_CTRL_LIBERIO_HPP */
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