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Diffstat (limited to 'host/lib/usrp/device3/device3_io_impl.cpp')
| -rw-r--r-- | host/lib/usrp/device3/device3_io_impl.cpp | 827 |
1 files changed, 0 insertions, 827 deletions
diff --git a/host/lib/usrp/device3/device3_io_impl.cpp b/host/lib/usrp/device3/device3_io_impl.cpp deleted file mode 100644 index 800d2f5a8..000000000 --- a/host/lib/usrp/device3/device3_io_impl.cpp +++ /dev/null @@ -1,827 +0,0 @@ -// -// Copyright 2014-2016 Ettus Research LLC -// Copyright 2018 Ettus Research, a National Instruments Company -// -// SPDX-License-Identifier: GPL-3.0-or-later -// - -// Provides streaming-related functions which are used by device3 objects. - -#include "device3_flow_ctrl.hpp" -#include "device3_impl.hpp" -#include <uhd/rfnoc/constants.hpp> -#include <uhd/rfnoc/radio_ctrl.hpp> -#include <uhd/rfnoc/rate_node_ctrl.hpp> -#include <uhd/rfnoc/sink_block_ctrl_base.hpp> -#include <uhd/rfnoc/source_block_ctrl_base.hpp> -#include <uhd/transport/zero_copy_flow_ctrl.hpp> -#include <uhd/utils/byteswap.hpp> -#include <uhd/utils/log.hpp> -#include <uhdlib/rfnoc/rx_stream_terminator.hpp> -#include <uhdlib/rfnoc/tx_stream_terminator.hpp> -#include <uhdlib/usrp/common/async_packet_handler.hpp> -#include <boost/atomic.hpp> - -#define UHD_TX_STREAMER_LOG() UHD_LOGGER_TRACE("STREAMER") -#define UHD_RX_STREAMER_LOG() UHD_LOGGER_TRACE("STREAMER") - -using namespace uhd; -using namespace uhd::usrp; -using namespace uhd::transport; - -/*********************************************************************** - * Helper functions for get_?x_stream() - **********************************************************************/ -static uhd::stream_args_t sanitize_stream_args(const uhd::stream_args_t& args_) -{ - uhd::stream_args_t args = args_; - if (args.channels.empty()) { - args.channels = std::vector<size_t>(1, 0); - } - - return args; -} - -static void check_stream_sig_compatible( - const rfnoc::stream_sig_t& stream_sig, stream_args_t& args, const std::string& tx_rx) -{ - if (args.otw_format.empty()) { - if (stream_sig.item_type.empty()) { - throw uhd::runtime_error( - str(boost::format("[%s Streamer] No otw_format defined!") % tx_rx)); - } else { - args.otw_format = stream_sig.item_type; - } - } else if (not stream_sig.item_type.empty() - and stream_sig.item_type != args.otw_format) { - throw uhd::runtime_error( - str(boost::format("[%s Streamer] Conflicting OTW types defined: " - "args.otw_format = '%s' <=> stream_sig.item_type = '%s'") - % tx_rx % args.otw_format % stream_sig.item_type)); - } - const size_t bpi = convert::get_bytes_per_item(args.otw_format); // bytes per item - if (stream_sig.packet_size) { - if (args.args.has_key("spp")) { - size_t args_spp = args.args.cast<size_t>("spp", 0); - if (args_spp * bpi != stream_sig.packet_size) { - throw uhd::runtime_error( - str(boost::format( - "[%s Streamer] Conflicting packet sizes defined: args yields " - "%d bytes but stream_sig.packet_size is %d bytes") - % tx_rx % (args_spp * bpi) % stream_sig.packet_size)); - } - } else { - args.args["spp"] = str(boost::format("%d") % (stream_sig.packet_size / bpi)); - } - } -} - -/*! \brief Returns a list of rx or tx channels for a streamer. - * - * If the given stream args contain instructions to set up channels, - * those are used. Otherwise, the current device's channel definition - * is consulted. - * - * \param args_ Stream args. - * \param[out] chan_list The list of channels in the correct order. - * \param[out] chan_args Channel args for every channel. `chan_args.size() == - * chan_list.size()` - */ -void generate_channel_list(const uhd::stream_args_t& args_, - std::vector<uhd::rfnoc::block_id_t>& chan_list, - std::vector<device_addr_t>& chan_args) -{ - uhd::stream_args_t args = args_; - std::vector<uhd::rfnoc::block_id_t> chan_list_(args.channels.size()); - std::vector<device_addr_t> chan_args_(args.channels.size()); - - for (size_t i = 0; i < args.channels.size(); i++) { - // Extract block ID - size_t chan_idx = args.channels[i]; - std::string key = str(boost::format("block_id%d") % chan_idx); - if (args.args.has_key(key)) { - chan_list_[i] = args.args.pop(key); - } else if (args.args.has_key("block_id")) { - chan_list_[i] = args.args["block_id"]; - } else { - throw uhd::runtime_error( - str(boost::format( - "Cannot create streamers: No block_id specified for channel %d.") - % chan_idx)); - } - - // Split off known channel specific args - key = str(boost::format("block_port%d") % chan_idx); - if (args.args.has_key(key)) { - chan_args_[i]["block_port"] = args.args.pop(key); - } - key = str(boost::format("radio_id%d") % chan_idx); - if (args.args.has_key(key)) { - chan_args_[i]["radio_id"] = args.args.pop(key); - } - key = str(boost::format("radio_port%d") % chan_idx); - if (args.args.has_key(key)) { - chan_args_[i]["radio_port"] = args.args.pop(key); - } - } - - // Add all remaining args to all channel args - for (device_addr_t& chan_arg : chan_args_) { - chan_arg = chan_arg.to_string() + "," + args.args.to_string(); - } - - chan_list = chan_list_; - chan_args = chan_args_; -} - - -/*********************************************************************** - * RX Flow Control Functions - **********************************************************************/ -/*! Determine the size of the flow control window in number of packets. - * - * This value depends on three things: - * - The packet size (in bytes), P - * - The size of the software buffer (in bytes), B - * - The desired buffer fullness, F - * - * The FC window size is thus X = floor(B*F/P). - * - * \param pkt_size The maximum packet size in bytes - * \param sw_buff_size Software buffer size in bytes - * \param rx_args If this has a key 'recv_buff_fullness', this value will - * be used for said fullness. Must be between 0.01 and 1. - * - * \returns The size of the flow control window in number of packets - */ -static size_t get_rx_flow_control_window( - size_t pkt_size, size_t sw_buff_size, const device_addr_t& rx_args) -{ - double fullness_factor = rx_args.cast<double>( - "recv_buff_fullness", uhd::rfnoc::DEFAULT_FC_RX_SW_BUFF_FULL_FACTOR); - - if (fullness_factor < 0.01 || fullness_factor > 1) { - throw uhd::value_error( - "recv_buff_fullness must be in [0.01, 1] inclusive (1% to 100%)"); - } - - size_t window_in_bytes = (static_cast<size_t>(fullness_factor * sw_buff_size)); - if (rx_args.has_key("max_recv_window")) { - window_in_bytes = std::min( - window_in_bytes, - pkt_size * rx_args.cast<size_t>("max_recv_window", 1) - ); - } - if (window_in_bytes < pkt_size) { - throw uhd::value_error("recv_buff_size must be larger than the recv_frame_size."); - } - UHD_ASSERT_THROW(size_t(sw_buff_size * fullness_factor) >= window_in_bytes); - return window_in_bytes; -} - - -/*********************************************************************** - * TX Async Message Functions - **********************************************************************/ -#define DEVICE3_ASYNC_EVENT_CODE_FLOW_CTRL 0 - -struct async_tx_info_t -{ - size_t stream_channel; - size_t device_channel; - boost::shared_ptr<device3_impl::async_md_type> async_queue; - boost::shared_ptr<device3_impl::async_md_type> old_async_queue; -}; - -/*! Handle incoming messages. - * Send them to the async message queue for the user to poll. - * - * This is run inside a uhd::task as long as this streamer lives. - */ -static void handle_tx_async_msgs(boost::shared_ptr<async_tx_info_t> async_info, - zero_copy_if::sptr xport, - uint32_t (*to_host)(uint32_t), - void (*unpack)(const uint32_t* packet_buff, vrt::if_packet_info_t&), - boost::function<double(void)> get_tick_rate) -{ - managed_recv_buffer::sptr buff = xport->get_recv_buff(); - if (not buff) { - return; - } - - // extract packet info - vrt::if_packet_info_t if_packet_info; - if_packet_info.num_packet_words32 = buff->size() / sizeof(uint32_t); - const uint32_t* packet_buff = buff->cast<const uint32_t*>(); - - // unpacking can fail - try { - unpack(packet_buff, if_packet_info); - } catch (const std::exception& ex) { - UHD_LOGGER_ERROR("STREAMER") - << "Error parsing async message packet: " << ex.what(); - return; - } - - double tick_rate = get_tick_rate(); - if (tick_rate == rfnoc::tick_node_ctrl::RATE_UNDEFINED) { - tick_rate = 1; - } - - // fill in the async metadata - async_metadata_t metadata; - load_metadata_from_buff(to_host, - metadata, - if_packet_info, - packet_buff, - tick_rate, - async_info->stream_channel); - - // Filter out any flow control messages and cache the rest - if (metadata.event_code == DEVICE3_ASYNC_EVENT_CODE_FLOW_CTRL) { - UHD_LOGGER_ERROR("TX ASYNC MSG") - << "Unexpected flow control message found in async message handling" - << std::endl; - } else { - async_info->async_queue->push_with_pop_on_full(metadata); - metadata.channel = async_info->device_channel; - async_info->old_async_queue->push_with_pop_on_full(metadata); - standard_async_msg_prints(metadata); - } -} - -bool device3_impl::recv_async_msg(async_metadata_t& async_metadata, double timeout) -{ - return _async_md->pop_with_timed_wait(async_metadata, timeout); -} - -/*********************************************************************** - * Receive streamer - **********************************************************************/ -void device3_impl::update_rx_streamers() -{ - for (const std::string& block_id : _rx_streamers.keys()) { - UHD_RX_STREAMER_LOG() << "updating RX streamer to " << block_id; - boost::shared_ptr<device3_recv_packet_streamer> my_streamer = - boost::dynamic_pointer_cast<device3_recv_packet_streamer>( - _rx_streamers[block_id].lock()); - if (my_streamer) { - double tick_rate = my_streamer->get_terminator()->get_tick_rate(); - if (tick_rate == rfnoc::tick_node_ctrl::RATE_UNDEFINED) { - tick_rate = 1.0; - } - double samp_rate = my_streamer->get_terminator()->get_output_samp_rate(); - if (samp_rate == rfnoc::rate_node_ctrl::RATE_UNDEFINED) { - samp_rate = 1.0; - } - double scaling = my_streamer->get_terminator()->get_output_scale_factor(); - if (scaling == rfnoc::scalar_node_ctrl::SCALE_UNDEFINED) { - scaling = 1 / 32767.; - } - UHD_RX_STREAMER_LOG() - << " New tick_rate == " << tick_rate - << " New samp_rate == " << samp_rate << " New scaling == " << scaling; - - my_streamer->set_tick_rate(tick_rate); - my_streamer->set_samp_rate(samp_rate); - my_streamer->set_scale_factor(scaling); - } - } -} - -rx_streamer::sptr device3_impl::get_rx_stream(const stream_args_t& args_) -{ - boost::mutex::scoped_lock lock(_transport_setup_mutex); - stream_args_t args = sanitize_stream_args(args_); - - // I. Generate the channel list - std::vector<uhd::rfnoc::block_id_t> chan_list; - std::vector<device_addr_t> chan_args; - generate_channel_list(args, chan_list, chan_args); - // Note: All 'args.args' are merged into chan_args now. - - // II. Iterate over all channels - boost::shared_ptr<device3_recv_packet_streamer> my_streamer; - // The terminator's lifetime is coupled to the streamer. - // There is only one terminator. If the streamer has multiple channels, - // it will be connected to each upstream block. - rfnoc::rx_stream_terminator::sptr recv_terminator = - rfnoc::rx_stream_terminator::make(); - for (size_t stream_i = 0; stream_i < chan_list.size(); stream_i++) { - // First, configure blocks and create transport - - // Get block ID and mb index - uhd::rfnoc::block_id_t block_id = chan_list[stream_i]; - UHD_RX_STREAMER_LOG() << "chan " << stream_i << " connecting to " << block_id; - // Update args so args.args is always valid for this particular channel: - args.args = chan_args[stream_i]; - size_t mb_index = block_id.get_device_no(); - size_t suggested_block_port = - args.args.cast<size_t>("block_port", rfnoc::ANY_PORT); - - // Access to this channel's block control - uhd::rfnoc::source_block_ctrl_base::sptr blk_ctrl = - boost::dynamic_pointer_cast<uhd::rfnoc::source_block_ctrl_base>( - get_block_ctrl(block_id)); - - // Connect the terminator with this channel's block. - size_t block_port = blk_ctrl->connect_downstream( - recv_terminator, suggested_block_port, args.args); - const size_t terminator_port = recv_terminator->connect_upstream(blk_ctrl); - blk_ctrl->set_downstream_port(block_port, terminator_port); - recv_terminator->set_upstream_port(terminator_port, block_port); - - // Check if the block connection is compatible (spp and item type) - check_stream_sig_compatible( - blk_ctrl->get_output_signature(block_port), args, "RX"); - - // Setup the DSP transport hints - device_addr_t rx_hints = get_rx_hints(mb_index); - - // Search the device and all nodes for lowest MTU - size_t mtu = std::min( - get_mtu(mb_index, uhd::direction_t::RX_DIRECTION), - blk_ctrl->get_mtu(block_port)); - UHD_RX_STREAMER_LOG() << "Maximum MTU supported by " - << blk_ctrl->unique_id() - << ": " << blk_ctrl->get_mtu(block_port); - std::vector<boost::shared_ptr<uhd::rfnoc::source_block_ctrl_base>> - upstream_source_nodes = - blk_ctrl->find_upstream_node<uhd::rfnoc::source_block_ctrl_base>(); - for (const boost::shared_ptr<uhd::rfnoc::source_block_ctrl_base>& node : - upstream_source_nodes) { - // Get MTU from Port 0 of the upstream nodes. This is okay for now as - // currently we use port 0 of a block in case of channel 1. - UHD_RX_STREAMER_LOG() << "Maximum MTU supported by " << node->unique_id() - << ": " << node->get_mtu(0); - mtu = std::min(mtu, node->get_mtu(0)); - } - rx_hints["mtu"] = std::to_string(mtu); - - // Make sure user supplied recv_frame_size is less than the MTU - if (rx_hints.cast<size_t>("recv_frame_size", mtu) > mtu) { - UHD_LOGGER_WARNING("STREAMER") - << "Requested recv_frame_size of " - << rx_hints["recv_frame_size"] - << " exceeds the maximum possible on this stream. Using " - << mtu; - rx_hints["recv_frame_size"] = std::to_string(mtu); - } - - // allocate sid and create transport - uhd::sid_t stream_address = blk_ctrl->get_address(block_port); - UHD_RX_STREAMER_LOG() << "creating rx stream " << rx_hints.to_string(); - both_xports_t xport = make_transport(stream_address, RX_DATA, rx_hints); - UHD_RX_STREAMER_LOG() << std::hex << "data_sid = " << xport.send_sid << std::dec - << " actual recv_buff_size = " << xport.recv_buff_size; - - // Configure the block - // Flow control setup - const size_t pkt_size = xport.recv->get_recv_frame_size(); - // Leave one pkt_size space for overrun packets - TODO make this obsolete - const size_t fc_window = - get_rx_flow_control_window(pkt_size, xport.recv_buff_size, rx_hints) - - pkt_size; - const size_t fc_handle_window = - std::max<size_t>(pkt_size, fc_window / stream_options.rx_fc_request_freq); - UHD_RX_STREAMER_LOG() << "Flow Control Window = " << (fc_window) - << ", Flow Control Handler Window = " << fc_handle_window; - blk_ctrl->configure_flow_control_out(true, - xport.lossless, - fc_window, - rx_hints.cast<size_t>("recv_pkt_limit", - 0), // On rfnoc-devel, update e300_impl::get_rx_hints() to set this to 32 - block_port); - - // Add flow control transport - boost::shared_ptr<rx_fc_cache_t> fc_cache(new rx_fc_cache_t()); - fc_cache->sid = xport.send_sid; - fc_cache->xport = xport.send; - fc_cache->interval = fc_handle_window; - if (xport.endianness == ENDIANNESS_BIG) { - fc_cache->to_host = uhd::ntohx<uint32_t>; - fc_cache->from_host = uhd::htonx<uint32_t>; - fc_cache->pack = vrt::chdr::if_hdr_pack_be; - fc_cache->unpack = vrt::chdr::if_hdr_unpack_be; - } else { - fc_cache->to_host = uhd::wtohx<uint32_t>; - fc_cache->from_host = uhd::htowx<uint32_t>; - fc_cache->pack = vrt::chdr::if_hdr_pack_le; - fc_cache->unpack = vrt::chdr::if_hdr_unpack_le; - } - xport.recv = zero_copy_flow_ctrl::make( - xport.recv, 0, [fc_cache](managed_buffer::sptr buff) { - return rx_flow_ctrl(fc_cache, buff); - }); - - // Configure the block - // Note: We need to set_destination() after writing to SR_CLEAR_TX_FC. - // See noc_shell.v, in the section called Stream Source for details. - // Setting SR_CLEAR_TX_FC will actually also clear the destination and - // other settings. - blk_ctrl->sr_write(uhd::rfnoc::SR_CLEAR_TX_FC, 0x1, block_port); - blk_ctrl->sr_write(uhd::rfnoc::SR_CLEAR_TX_FC, 0x0, block_port); - // Configure routing for data - blk_ctrl->set_destination(xport.send_sid.get_src(), block_port); - - // Configure routing for responses - blk_ctrl->sr_write( - uhd::rfnoc::SR_RESP_OUT_DST_SID, xport.send_sid.get_src(), block_port); - UHD_RX_STREAMER_LOG() << "resp_out_dst_sid == " << xport.send_sid.get_src(); - - // Find all upstream radio nodes and set their response in SID to the host - std::vector<boost::shared_ptr<uhd::rfnoc::radio_ctrl>> upstream_radio_nodes = - blk_ctrl->find_upstream_node<uhd::rfnoc::radio_ctrl>(); - UHD_RX_STREAMER_LOG() << "Number of upstream radio nodes: " - << upstream_radio_nodes.size(); - for (const boost::shared_ptr<uhd::rfnoc::radio_ctrl>& node : - upstream_radio_nodes) { - node->sr_write( - uhd::rfnoc::SR_RESP_OUT_DST_SID, xport.send_sid.get_src(), block_port); - } - - // Second, configure the streamer - - // make the new streamer given the samples per packet - if (not my_streamer) { - // To calculate the max number of samples per packet, we assume the maximum - // header length to avoid fragmentation should the entire header be used. - const size_t bpp = - pkt_size - stream_options.rx_max_len_hdr; // bytes per packet - const size_t bpi = - convert::get_bytes_per_item(args.otw_format); // bytes per item - const size_t spp = std::min(args.args.cast<size_t>("spp", bpp / bpi), - bpp / bpi); // samples per packet - UHD_RX_STREAMER_LOG() << "bpp == " << bpp << ", bpi == " << bpi << ", spp == " << spp; - - my_streamer = boost::make_shared<device3_recv_packet_streamer>( - spp, recv_terminator, xport); - my_streamer->resize(chan_list.size()); - } - - // init some streamer stuff - std::string conv_endianness; - if (xport.endianness == ENDIANNESS_BIG) { - my_streamer->set_vrt_unpacker(&vrt::chdr::if_hdr_unpack_be); - conv_endianness = "be"; - } else { - my_streamer->set_vrt_unpacker(&vrt::chdr::if_hdr_unpack_le); - conv_endianness = "le"; - } - - // set the converter - uhd::convert::id_type id; - id.input_format = args.otw_format + "_item32_" + conv_endianness; - id.num_inputs = 1; - id.output_format = args.cpu_format; - id.num_outputs = 1; - my_streamer->set_converter(id); - - // Give the streamer a functor to handle flow control ACK messages - my_streamer->set_xport_handle_flowctrl_ack( - stream_i, [fc_cache](const uint32_t* payload) { - handle_rx_flowctrl_ack(fc_cache, payload); - }); - - // Give the streamer a functor to get the recv_buffer - my_streamer->set_xport_chan_get_buff(stream_i, - [xport](double timeout) { return xport.recv->get_recv_buff(timeout); }, - true /*flush*/ - ); - - // Give the streamer a functor to handle overruns - // bind requires a weak_ptr to break the a streamer->streamer circular dependency - // Using "this" is OK because we know that this device3_impl will outlive the - // streamer - boost::weak_ptr<uhd::rx_streamer> weak_ptr(my_streamer); - my_streamer->set_overflow_handler( - stream_i, [recv_terminator, weak_ptr, stream_i]() { - recv_terminator->handle_overrun(weak_ptr, stream_i); - }); - - // Give the streamer a functor issue stream cmd - my_streamer->set_issue_stream_cmd( - stream_i, [blk_ctrl, block_port](const stream_cmd_t& stream_cmd) { - blk_ctrl->issue_stream_cmd(stream_cmd, block_port); - }); - } - - // Notify all blocks in this chain that they are connected to an active streamer - recv_terminator->set_rx_streamer(true, 0); - - // Store a weak pointer to prevent a streamer->device3_impl->streamer circular - // dependency. Note that we store the streamer only once, and use its terminator's ID - // to do so. - _rx_streamers[recv_terminator->unique_id()] = - boost::weak_ptr<uhd::rx_streamer>(my_streamer); - - // Sets tick rate, samp rate and scaling on this streamer. - // A registered terminator is required to do this. - update_rx_streamers(); - - post_streamer_hooks(RX_DIRECTION); - return my_streamer; -} - -/*********************************************************************** - * Transmit streamer - **********************************************************************/ -void device3_impl::update_tx_streamers() -{ - for (const std::string& block_id : _tx_streamers.keys()) { - UHD_TX_STREAMER_LOG() << "updating TX streamer: " << block_id; - boost::shared_ptr<device3_send_packet_streamer> my_streamer = - boost::dynamic_pointer_cast<device3_send_packet_streamer>( - _tx_streamers[block_id].lock()); - if (my_streamer) { - double tick_rate = my_streamer->get_terminator()->get_tick_rate(); - if (tick_rate == rfnoc::tick_node_ctrl::RATE_UNDEFINED) { - tick_rate = 1.0; - } - double samp_rate = my_streamer->get_terminator()->get_input_samp_rate(); - if (samp_rate == rfnoc::rate_node_ctrl::RATE_UNDEFINED) { - samp_rate = 1.0; - } - double scaling = my_streamer->get_terminator()->get_input_scale_factor(); - if (scaling == rfnoc::scalar_node_ctrl::SCALE_UNDEFINED) { - scaling = 32767.; - } - UHD_TX_STREAMER_LOG() - << "New tick_rate == " << tick_rate << " New samp_rate == " << samp_rate - << " New scaling == " << scaling; - my_streamer->set_tick_rate(tick_rate); - my_streamer->set_samp_rate(samp_rate); - my_streamer->set_scale_factor(scaling); - } - } -} - -tx_streamer::sptr device3_impl::get_tx_stream(const uhd::stream_args_t& args_) -{ - boost::mutex::scoped_lock lock(_transport_setup_mutex); - stream_args_t args = sanitize_stream_args(args_); - - // I. Generate the channel list - std::vector<uhd::rfnoc::block_id_t> chan_list; - std::vector<device_addr_t> chan_args; - generate_channel_list(args, chan_list, chan_args); - // Note: All 'args.args' are merged into chan_args now. - - // shared async queue for all channels in streamer - boost::shared_ptr<async_md_type> async_md(new async_md_type(1000 /*messages deep*/)); - - // II. Iterate over all channels - boost::shared_ptr<device3_send_packet_streamer> my_streamer; - // The terminator's lifetime is coupled to the streamer. - // There is only one terminator. If the streamer has multiple channels, - // it will be connected to each downstream block. - rfnoc::tx_stream_terminator::sptr send_terminator = - rfnoc::tx_stream_terminator::make(); - for (size_t stream_i = 0; stream_i < chan_list.size(); stream_i++) { - // First, configure the downstream blocks and create the transports - - // Get block ID and mb index - uhd::rfnoc::block_id_t block_id = chan_list[stream_i]; - // Update args so args.args is always valid for this particular channel: - args.args = chan_args[stream_i]; - size_t mb_index = block_id.get_device_no(); - size_t suggested_block_port = - args.args.cast<size_t>("block_port", rfnoc::ANY_PORT); - - // Access to this channel's block control - uhd::rfnoc::sink_block_ctrl_base::sptr blk_ctrl = - boost::dynamic_pointer_cast<uhd::rfnoc::sink_block_ctrl_base>( - get_block_ctrl(block_id)); - - // Connect the terminator with this channel's block. - // This will throw if the connection is not possible. - size_t block_port = - blk_ctrl->connect_upstream(send_terminator, suggested_block_port, args.args); - const size_t terminator_port = send_terminator->connect_downstream(blk_ctrl); - blk_ctrl->set_upstream_port(block_port, terminator_port); - send_terminator->set_downstream_port(terminator_port, block_port); - - // Check if the block connection is compatible (spp and item type) - check_stream_sig_compatible( - blk_ctrl->get_input_signature(block_port), args, "TX"); - - // Setup the dsp transport hints - device_addr_t tx_hints = get_tx_hints(mb_index); - - // Search the device and all nodes for lowest MTU - size_t mtu = std::min( - get_mtu(mb_index, uhd::direction_t::TX_DIRECTION), - blk_ctrl->get_mtu(block_port)); - UHD_TX_STREAMER_LOG() << "Maximum MTU supported by " - << blk_ctrl->unique_id() << ": " - << blk_ctrl->get_mtu(block_port); - std::vector<boost::shared_ptr<uhd::rfnoc::sink_block_ctrl_base>> - downstream_sink_nodes = - blk_ctrl->find_downstream_node<uhd::rfnoc::sink_block_ctrl_base>(); - for (const boost::shared_ptr<uhd::rfnoc::sink_block_ctrl_base>& node : - downstream_sink_nodes) { - // Get MTU from Port 0 of the downstream nodes. This is okay for now as - // currently we use port 0 of a block in case of channel 1. - UHD_TX_STREAMER_LOG() << "Maximum MTU supported by " - << node->unique_id() << ": " - << node->get_mtu(0); - mtu = std::min(mtu, node->get_mtu(0)); - } - tx_hints["mtu"] = std::to_string(mtu); - - // Make sure user supplied send_frame_size is less than the MTU - if (tx_hints.cast<size_t>("send_frame_size", mtu) > mtu) { - UHD_LOGGER_WARNING("STREAMER") - << "Requested send_frame_size of " - << tx_hints["send_frame_size"] - << " exceeds the maximum possible on this stream. Using " - << mtu; - tx_hints["send_frame_size"] = std::to_string(mtu); - } - - const size_t fifo_size = blk_ctrl->get_fifo_size(block_port); - // Allocate sid and create transport - uhd::sid_t stream_address = blk_ctrl->get_address(block_port); - UHD_TX_STREAMER_LOG() << "creating tx stream " << tx_hints.to_string(); - both_xports_t xport = make_transport(stream_address, TX_DATA, tx_hints); - both_xports_t async_xport = - make_transport(stream_address, ASYNC_MSG, device_addr_t("")); - UHD_TX_STREAMER_LOG() << std::hex << "data_sid = " << xport.send_sid << std::dec; - - // Configure flow control - // This disables the FC module's output, do this before configuring flow control - blk_ctrl->sr_write(uhd::rfnoc::SR_CLEAR_RX_FC, 0x1, block_port); - blk_ctrl->sr_write(uhd::rfnoc::SR_CLEAR_RX_FC, 0x0, block_port); - // Configure flow control on downstream block - const size_t pkt_size = xport.send->get_send_frame_size(); - const size_t fc_window = - std::min(tx_hints.cast<size_t>("send_buff_size", fifo_size), fifo_size); - const size_t fc_handle_window = - std::max<size_t>(pkt_size, fc_window / stream_options.tx_fc_response_freq); - UHD_TX_STREAMER_LOG() << "Flow Control Window = " << fc_window - << ", Flow Control Handler Window = " << fc_handle_window - << ", FIFO size = " << fifo_size; - blk_ctrl->configure_flow_control_in(fc_handle_window, /*bytes*/ - block_port); - // Add flow control transport - boost::shared_ptr<tx_fc_cache_t> fc_cache(new tx_fc_cache_t(fc_window)); - if (xport.endianness == ENDIANNESS_BIG) { - fc_cache->to_host = uhd::ntohx<uint32_t>; - fc_cache->from_host = uhd::htonx<uint32_t>; - fc_cache->pack = vrt::chdr::if_hdr_pack_be; - fc_cache->unpack = vrt::chdr::if_hdr_unpack_be; - } else { - fc_cache->to_host = uhd::wtohx<uint32_t>; - fc_cache->from_host = uhd::htowx<uint32_t>; - fc_cache->pack = vrt::chdr::if_hdr_pack_le; - fc_cache->unpack = vrt::chdr::if_hdr_unpack_le; - } - xport.send = zero_copy_flow_ctrl::make(xport.send, - [fc_cache, xport](managed_buffer::sptr buff) { - return tx_flow_ctrl(fc_cache, xport.recv, buff); - }, - 0); - - // Configure return path for async messages - blk_ctrl->sr_write( - uhd::rfnoc::SR_RESP_IN_DST_SID, async_xport.recv_sid.get_dst(), block_port); - UHD_TX_STREAMER_LOG() << "resp_in_dst_sid == " - << boost::format("0x%04X") % xport.recv_sid.get_dst(); - - // FIXME: Once there is a better way to map the radio block and port - // to the channel or another way to receive asynchronous messages that - // is not in-band, this should be removed. - if (args.args.has_key("radio_id") and args.args.has_key("radio_port")) { - // Find downstream radio node and set the response SID to the host - uhd::rfnoc::block_id_t radio_id(args.args["radio_id"]); - size_t radio_port = args.args.cast<size_t>("radio_port", 0); - std::vector<boost::shared_ptr<uhd::rfnoc::radio_ctrl>> - downstream_radio_nodes = - blk_ctrl->find_downstream_node<uhd::rfnoc::radio_ctrl>(); - UHD_TX_STREAMER_LOG() - << "Number of downstream radio nodes: " << downstream_radio_nodes.size(); - for (const boost::shared_ptr<uhd::rfnoc::radio_ctrl>& node : - downstream_radio_nodes) { - if (node->get_block_id() == radio_id) { - node->sr_write(uhd::rfnoc::SR_RESP_IN_DST_SID, - async_xport.recv_sid.get_dst(), - radio_port); - } - } - } else { - // FIXME: This block is preserved for legacy behavior where the - // radio_id and radio_port are not provided. It fails if more - // than one radio is visible downstream or the port on the radio - // is not the same as the block_port. It should be removed as - // soon as possible. - // Find all downstream radio nodes and set their response SID to the host - std::vector<boost::shared_ptr<uhd::rfnoc::radio_ctrl>> - downstream_radio_nodes = - blk_ctrl->find_downstream_node<uhd::rfnoc::radio_ctrl>(); - UHD_TX_STREAMER_LOG() - << "Number of downstream radio nodes: " << downstream_radio_nodes.size(); - for (const boost::shared_ptr<uhd::rfnoc::radio_ctrl>& node : - downstream_radio_nodes) { - node->sr_write(uhd::rfnoc::SR_RESP_IN_DST_SID, - async_xport.recv_sid.get_dst(), - block_port); - } - } - - // Second, configure the streamer now that the blocks and transports are - // configured - - // make the new streamer given the samples per packet - if (not my_streamer) { - // To calculate the max number of samples per packet, we assume the maximum - // header length to avoid fragmentation should the entire header be used. - const size_t bpp = - tx_hints.cast<size_t>("bpp", pkt_size) - - stream_options.tx_max_len_hdr; - const size_t bpi = - convert::get_bytes_per_item(args.otw_format); // bytes per item - const size_t spp = std::min(args.args.cast<size_t>("spp", bpp / bpi), - bpp / bpi); // samples per packet - UHD_TX_STREAMER_LOG() - << "bpp == " << bpp - << ", bpi == " << bpi - << ", spp == " << spp; - - my_streamer = boost::make_shared<device3_send_packet_streamer>( - spp, send_terminator, xport, async_xport); - my_streamer->resize(chan_list.size()); - } - - // init some streamer stuff - std::string conv_endianness; - if (xport.endianness == ENDIANNESS_BIG) { - my_streamer->set_vrt_packer(&vrt::chdr::if_hdr_pack_be); - conv_endianness = "be"; - } else { - my_streamer->set_vrt_packer(&vrt::chdr::if_hdr_pack_le); - conv_endianness = "le"; - } - - // set the converter - uhd::convert::id_type id; - id.input_format = args.cpu_format; - id.num_inputs = 1; - id.output_format = args.otw_format + "_item32_" + conv_endianness; - id.num_outputs = 1; - my_streamer->set_converter(id); - - boost::shared_ptr<async_tx_info_t> async_tx_info(new async_tx_info_t()); - async_tx_info->stream_channel = args.channels[stream_i]; - async_tx_info->device_channel = mb_index; - async_tx_info->async_queue = async_md; - async_tx_info->old_async_queue = _async_md; - - task::sptr async_task = - task::make([async_tx_info, async_xport, xport, send_terminator]() { - handle_tx_async_msgs(async_tx_info, - async_xport.recv, - xport.endianness == ENDIANNESS_BIG ? uhd::ntohx<uint32_t> - : uhd::wtohx<uint32_t>, - xport.endianness == ENDIANNESS_BIG ? vrt::chdr::if_hdr_unpack_be - : vrt::chdr::if_hdr_unpack_le, - [send_terminator]() { return send_terminator->get_tick_rate(); }); - }); - my_streamer->add_async_msg_task(async_task); - - // Give the streamer a functor to get the send buffer - my_streamer->set_xport_chan_get_buff(stream_i, - [xport](const double timeout) { return xport.send->get_send_buff(timeout); }); - // Give the streamer a functor handled received async messages - my_streamer->set_async_receiver( - [async_md](uhd::async_metadata_t& md, const double timeout) { - return async_md->pop_with_timed_wait(md, timeout); - }); - my_streamer->set_xport_chan_sid(stream_i, true, xport.send_sid); - // CHDR does not support trailers - my_streamer->set_enable_trailer(false); - - // Avoid sending FC ACKs if the transport is lossless or the user - // has explictly requested not to send them - if (not(xport.lossless or tx_hints.has_key("send_no_fc_acks"))) { - my_streamer->set_xport_chan_post_send_cb(stream_i, [fc_cache, xport]() { - tx_flow_ctrl_ack(fc_cache, xport.send, xport.send_sid); - }); - } - } - - // Notify all blocks in this chain that they are connected to an active streamer - send_terminator->set_tx_streamer(true, 0); - - // Store a weak pointer to prevent a streamer->device3_impl->streamer circular - // dependency. Note that we store the streamer only once, and use its terminator's ID - // to do so. - _tx_streamers[send_terminator->unique_id()] = - boost::weak_ptr<uhd::tx_streamer>(my_streamer); - - // Sets tick rate, samp rate and scaling on this streamer - // A registered terminator is required to do this. - update_tx_streamers(); - - post_streamer_hooks(TX_DIRECTION); - return my_streamer; -} |