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//
// Copyright 2014-2015 Ettus Research LLC
// Copyright 2018 Ettus Research, a National Instruments Company
//
// SPDX-License-Identifier: GPL-3.0-or-later
//
// Declares the device3_impl class which is a layer between device3 and
// the different 3-rd gen device impls (e.g. x300_impl)
#ifndef INCLUDED_DEVICE3_IMPL_HPP
#define INCLUDED_DEVICE3_IMPL_HPP
#include <uhd/transport/bounded_buffer.hpp>
#include <uhd/transport/vrt_if_packet.hpp>
#include <uhd/transport/chdr.hpp>
#include <uhd/transport/zero_copy.hpp>
#include <uhd/types/sid.hpp>
#include <uhd/types/metadata.hpp>
#include <uhd/types/endianness.hpp>
#include <uhd/types/direction.hpp>
#include <uhd/utils/tasks.hpp>
#include <uhd/device3.hpp>
#include "../../transport/super_send_packet_handler.hpp"
#include "../../transport/super_recv_packet_handler.hpp"
#include <uhdlib/rfnoc/tx_stream_terminator.hpp>
#include <uhdlib/rfnoc/rx_stream_terminator.hpp>
#include <uhdlib/rfnoc/xports.hpp>
namespace uhd { namespace usrp {
/***********************************************************************
* Default settings (any device3 may override these)
**********************************************************************/
static const size_t DEVICE3_RX_FC_REQUEST_FREQ = 32; //per flow-control window
static const size_t DEVICE3_TX_FC_RESPONSE_FREQ = 8;
static const size_t DEVICE3_FC_PACKET_LEN_IN_WORDS32 = 2;
static const size_t DEVICE3_FC_PACKET_COUNT_OFFSET = 0;
static const size_t DEVICE3_FC_BYTE_COUNT_OFFSET = 1;
static const size_t DEVICE3_LINE_SIZE = 8;
static const size_t DEVICE3_TX_MAX_HDR_LEN = uhd::transport::vrt::chdr::max_if_hdr_words64 * sizeof(uint64_t); // Bytes
static const size_t DEVICE3_RX_MAX_HDR_LEN = uhd::transport::vrt::chdr::max_if_hdr_words64 * sizeof(uint64_t); // Bytes
// This class manages the lifetime of the TX async message handler task, transports, and terminator
class device3_send_packet_streamer : public uhd::transport::sph::send_packet_streamer
{
public:
device3_send_packet_streamer(
const size_t max_num_samps,
const uhd::rfnoc::tx_stream_terminator::sptr terminator,
const both_xports_t data_xport,
const both_xports_t async_msg_xport
) :
uhd::transport::sph::send_packet_streamer(max_num_samps),
_terminator(terminator),
_data_xport(data_xport),
_async_msg_xport(async_msg_xport)
{}
~device3_send_packet_streamer()
{
// Make sure the async task is destroyed before the transports
_tx_async_msg_tasks.clear();
}
uhd::rfnoc::tx_stream_terminator::sptr get_terminator()
{
return _terminator;
}
void add_async_msg_task(task::sptr task)
{
_tx_async_msg_tasks.push_back(task);
}
private:
uhd::rfnoc::tx_stream_terminator::sptr _terminator;
both_xports_t _data_xport;
both_xports_t _async_msg_xport;
std::vector<task::sptr> _tx_async_msg_tasks;
};
// This class manages the lifetime of the RX transports and terminator and provides access to both
class device3_recv_packet_streamer : public uhd::transport::sph::recv_packet_streamer
{
public:
device3_recv_packet_streamer(
const size_t max_num_samps,
const uhd::rfnoc::rx_stream_terminator::sptr terminator,
const both_xports_t xport
) :
uhd::transport::sph::recv_packet_streamer(max_num_samps),
_terminator(terminator),
_xport(xport) {}
~device3_recv_packet_streamer() {}
both_xports_t get_xport()
{
return _xport;
}
uhd::rfnoc::rx_stream_terminator::sptr get_terminator()
{
return _terminator;
}
private:
uhd::rfnoc::rx_stream_terminator::sptr _terminator;
both_xports_t _xport;
};
class device3_impl : public uhd::device3, public boost::enable_shared_from_this<device3_impl>
{
public:
/***********************************************************************
* device3-specific Types
**********************************************************************/
typedef uhd::transport::bounded_buffer<uhd::async_metadata_t> async_md_type;
//! The purpose of a transport
enum xport_type_t {
CTRL = 0,
ASYNC_MSG,
TX_DATA,
RX_DATA
};
enum xport_t {AXI, ETH, PCIE};
//! Stores all streaming-related options
struct stream_options_t
{
//! Max size of the header in bytes for TX
size_t tx_max_len_hdr;
//! Max size of the header in bytes for RX
size_t rx_max_len_hdr;
//! How often we send ACKs to the upstream block per one full FC window
size_t rx_fc_request_freq;
//! How often the downstream block should send ACKs per one full FC window
size_t tx_fc_response_freq;
stream_options_t(void)
: tx_max_len_hdr(DEVICE3_TX_MAX_HDR_LEN)
, rx_max_len_hdr(DEVICE3_RX_MAX_HDR_LEN)
, rx_fc_request_freq(DEVICE3_RX_FC_REQUEST_FREQ)
, tx_fc_response_freq(DEVICE3_TX_FC_RESPONSE_FREQ)
{}
};
/***********************************************************************
* I/O Interface
**********************************************************************/
uhd::tx_streamer::sptr get_tx_stream(const uhd::stream_args_t &);
uhd::rx_streamer::sptr get_rx_stream(const uhd::stream_args_t &);
bool recv_async_msg(uhd::async_metadata_t &async_metadata, double timeout);
/***********************************************************************
* Other public APIs
**********************************************************************/
rfnoc::graph::sptr create_graph(const std::string &name="");
protected:
/***********************************************************************
* Structors
**********************************************************************/
device3_impl();
virtual ~device3_impl() {}
/***********************************************************************
* Streaming-related
**********************************************************************/
// The 'rate' argument is so we can use these as subscribers to rate changes
public: // TODO make these protected again
void update_rx_streamers(double rate=-1.0);
void update_tx_streamers(double rate=-1.0);
protected:
/***********************************************************************
* Transport-related
**********************************************************************/
stream_options_t stream_options;
/*! \brief Create a transport to a given endpoint.
*
* \param address The endpoint address of the block we're creating a transport to.
* The source address in this value is not considered, only the
* destination address.
* \param xport_type Specify which kind of transport this is.
* \param args Additional arguments for the transport generation. See \ref page_transport
* for valid arguments.
*/
virtual uhd::both_xports_t make_transport(
const uhd::sid_t &address,
const xport_type_t xport_type,
const uhd::device_addr_t& args
) = 0;
virtual uhd::device_addr_t get_tx_hints(size_t) { return uhd::device_addr_t(); }
virtual uhd::device_addr_t get_rx_hints(size_t) { return uhd::device_addr_t(); }
//! Is called after a streamer is generated
virtual void post_streamer_hooks(uhd::direction_t) {}
/***********************************************************************
* Channel-related
**********************************************************************/
/*! Merge a list of channels into the existing channel definition.
*
* Intelligently merge the channels described in \p chan_ids
* into the current channel definition. If none of the channels in
* \p chan_ids is in the current definition, they simply get appended.
* Otherwise, they get overwritten in the order of \p chan_ids.
*
* \param chan_ids List of block IDs for the channels.
* \param chan_args New channel args. Must have same length as chan_ids.
*
*/
void merge_channel_defs(
const std::vector<rfnoc::block_id_t> &chan_ids,
const std::vector<uhd::device_addr_t> &chan_args,
const uhd::direction_t dir
);
/***********************************************************************
* RFNoC-Specific
**********************************************************************/
void enumerate_rfnoc_blocks(
size_t device_index,
size_t n_blocks,
size_t base_port,
const uhd::sid_t &base_sid,
uhd::device_addr_t transport_args
);
/***********************************************************************
* Members
**********************************************************************/
// TODO: Maybe move these to private
uhd::dict<std::string, boost::weak_ptr<uhd::rx_streamer> > _rx_streamers;
uhd::dict<std::string, boost::weak_ptr<uhd::tx_streamer> > _tx_streamers;
private:
/***********************************************************************
* Private Members
**********************************************************************/
//! Buffer for async metadata
boost::shared_ptr<async_md_type> _async_md;
//! This mutex locks the get_xx_stream() functions.
boost::mutex _transport_setup_mutex;
};
}} /* namespace uhd::usrp */
#endif /* INCLUDED_DEVICE3_IMPL_HPP */
// vim: sw=4 expandtab:
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