diff options
Diffstat (limited to 'host/lib/usrp/x300/x300_io_impl.cpp')
| -rw-r--r-- | host/lib/usrp/x300/x300_io_impl.cpp | 647 |
1 files changed, 647 insertions, 0 deletions
diff --git a/host/lib/usrp/x300/x300_io_impl.cpp b/host/lib/usrp/x300/x300_io_impl.cpp new file mode 100644 index 000000000..85de34a54 --- /dev/null +++ b/host/lib/usrp/x300/x300_io_impl.cpp @@ -0,0 +1,647 @@ +// +// Copyright 2013-2014 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 "x300_regs.hpp" +#include "x300_impl.hpp" +#include "validate_subdev_spec.hpp" +#include "../../transport/super_recv_packet_handler.hpp" +#include "../../transport/super_send_packet_handler.hpp" +#include <uhd/transport/nirio_zero_copy.hpp> +#include "async_packet_handler.hpp" +#include <uhd/transport/bounded_buffer.hpp> +#include <boost/bind.hpp> +#include <uhd/utils/tasks.hpp> +#include <uhd/utils/log.hpp> +#include <boost/foreach.hpp> +#include <boost/make_shared.hpp> + +using namespace uhd; +using namespace uhd::usrp; +using namespace uhd::transport; + +/*********************************************************************** + * update streamer rates + **********************************************************************/ +void x300_impl::update_tick_rate(mboard_members_t &mb, const double rate) +{ + BOOST_FOREACH(const size_t &dspno, mb.rx_streamers.keys()) + { + boost::shared_ptr<sph::recv_packet_streamer> my_streamer = + boost::dynamic_pointer_cast<sph::recv_packet_streamer>(mb.rx_streamers[dspno].lock()); + if (my_streamer) my_streamer->set_tick_rate(rate); + } + BOOST_FOREACH(const size_t &dspno, mb.tx_streamers.keys()) + { + boost::shared_ptr<sph::send_packet_streamer> my_streamer = + boost::dynamic_pointer_cast<sph::send_packet_streamer>(mb.tx_streamers[dspno].lock()); + if (my_streamer) my_streamer->set_tick_rate(rate); + } +} + +void x300_impl::update_rx_samp_rate(mboard_members_t &mb, const size_t dspno, const double rate) +{ + if (not mb.rx_streamers.has_key(dspno)) return; + boost::shared_ptr<sph::recv_packet_streamer> my_streamer = + boost::dynamic_pointer_cast<sph::recv_packet_streamer>(mb.rx_streamers[dspno].lock()); + if (not my_streamer) return; + my_streamer->set_samp_rate(rate); + const double adj = mb.radio_perifs[dspno].ddc->get_scaling_adjustment(); + my_streamer->set_scale_factor(adj); +} + +void x300_impl::update_tx_samp_rate(mboard_members_t &mb, const size_t dspno, const double rate) +{ + if (not mb.tx_streamers.has_key(dspno)) return; + boost::shared_ptr<sph::send_packet_streamer> my_streamer = + boost::dynamic_pointer_cast<sph::send_packet_streamer>(mb.tx_streamers[dspno].lock()); + if (not my_streamer) return; + my_streamer->set_samp_rate(rate); + const double adj = mb.radio_perifs[dspno].duc->get_scaling_adjustment(); + my_streamer->set_scale_factor(adj); +} + +/*********************************************************************** + * Setup dboard muxing for IQ + **********************************************************************/ +void x300_impl::update_subdev_spec(const std::string &tx_rx, const size_t mb_i, const subdev_spec_t &spec) +{ + UHD_ASSERT_THROW(tx_rx == "tx" or tx_rx == "rx"); + UHD_ASSERT_THROW(mb_i < _mb.size()); + const std::string mb_name = boost::lexical_cast<std::string>(mb_i); + fs_path mb_root = "/mboards/" + mb_name; + + //sanity checking + validate_subdev_spec(_tree, spec, tx_rx, mb_name); + UHD_ASSERT_THROW(spec.size() <= 2); + if (spec.size() == 1) { + UHD_ASSERT_THROW(spec[0].db_name == "A" || spec[0].db_name == "B"); + } + else if (spec.size() == 2) { + UHD_ASSERT_THROW( + (spec[0].db_name == "A" && spec[1].db_name == "B") || + (spec[0].db_name == "B" && spec[1].db_name == "A") + ); + } + + std::vector<size_t> chan_to_dsp_map(spec.size(), 0); + // setup mux for this spec + for (size_t i = 0; i < spec.size(); i++) + { + const int radio_idx = _mb[mb_i].get_radio_index(spec[i].db_name); + chan_to_dsp_map[i] = radio_idx; + + //extract connection + const std::string conn = _tree->access<std::string>(mb_root / "dboards" / spec[i].db_name / (tx_rx + "_frontends") / spec[i].sd_name / "connection").get(); + + if (tx_rx == "tx") { + //swap condition + _mb[mb_i].radio_perifs[radio_idx].tx_fe->set_mux(conn); + } else { + //swap condition + const bool fe_swapped = (conn == "QI" or conn == "Q"); + _mb[mb_i].radio_perifs[radio_idx].ddc->set_mux(conn, fe_swapped); + //see usrp/io_impl.cpp if multiple DSPs share the frontend: + _mb[mb_i].radio_perifs[radio_idx].rx_fe->set_mux(fe_swapped); + } + } + + _tree->access<std::vector<size_t> >(mb_root / (tx_rx + "_chan_dsp_mapping")).set(chan_to_dsp_map); +} + + +/*********************************************************************** + * VITA stuff + **********************************************************************/ +static void x300_if_hdr_unpack_be( + const boost::uint32_t *packet_buff, + vrt::if_packet_info_t &if_packet_info +){ + if_packet_info.link_type = vrt::if_packet_info_t::LINK_TYPE_CHDR; + return vrt::if_hdr_unpack_be(packet_buff, if_packet_info); +} + +static void x300_if_hdr_pack_be( + boost::uint32_t *packet_buff, + vrt::if_packet_info_t &if_packet_info +){ + if_packet_info.link_type = vrt::if_packet_info_t::LINK_TYPE_CHDR; + return vrt::if_hdr_pack_be(packet_buff, if_packet_info); +} + +static void x300_if_hdr_unpack_le( + const boost::uint32_t *packet_buff, + vrt::if_packet_info_t &if_packet_info +){ + if_packet_info.link_type = vrt::if_packet_info_t::LINK_TYPE_CHDR; + return vrt::if_hdr_unpack_le(packet_buff, if_packet_info); +} + +static void x300_if_hdr_pack_le( + boost::uint32_t *packet_buff, + vrt::if_packet_info_t &if_packet_info +){ + if_packet_info.link_type = vrt::if_packet_info_t::LINK_TYPE_CHDR; + return vrt::if_hdr_pack_le(packet_buff, if_packet_info); +} + +/*********************************************************************** + * RX flow control handler + **********************************************************************/ +static size_t get_rx_flow_control_window(size_t frame_size, size_t sw_buff_size, const device_addr_t& rx_args) +{ + double fullness_factor = rx_args.cast<double>("recv_buff_fullness", X300_RX_SW_BUFF_FULL_FACTOR); + + if (fullness_factor < 0.01 || fullness_factor > 1) { + throw uhd::value_error("recv_buff_fullness must be between 0.01 and 1 inclusive (1% to 100%)"); + } + + size_t window_in_pkts = (static_cast<size_t>(sw_buff_size * fullness_factor) / frame_size); + if (window_in_pkts == 0) { + throw uhd::value_error("recv_buff_size must be larger than the recv_frame_size."); + } + return window_in_pkts; +} + +static void handle_rx_flowctrl(const boost::uint32_t sid, zero_copy_if::sptr xport, bool big_endian, boost::shared_ptr<boost::uint32_t> seq32_state, const size_t last_seq) +{ + managed_send_buffer::sptr buff = xport->get_send_buff(0.0); + if (not buff) + { + throw uhd::runtime_error("handle_rx_flowctrl timed out getting a send buffer"); + } + boost::uint32_t *pkt = buff->cast<boost::uint32_t *>(); + + //recover seq32 + boost::uint32_t &seq32 = *seq32_state; + const size_t seq12 = seq32 & 0xfff; + if (last_seq < seq12) seq32 += (1 << 12); + seq32 &= ~0xfff; + seq32 |= last_seq; + + //load packet info + vrt::if_packet_info_t packet_info; + packet_info.packet_type = vrt::if_packet_info_t::PACKET_TYPE_CONTEXT; + packet_info.num_payload_words32 = 2; + packet_info.num_payload_bytes = packet_info.num_payload_words32*sizeof(boost::uint32_t); + packet_info.packet_count = seq32; + packet_info.sob = false; + packet_info.eob = false; + packet_info.sid = sid; + packet_info.has_sid = true; + packet_info.has_cid = false; + packet_info.has_tsi = false; + packet_info.has_tsf = false; + packet_info.has_tlr = false; + + //load header + if (big_endian) + x300_if_hdr_pack_be(pkt, packet_info); + else + x300_if_hdr_pack_le(pkt, packet_info); + + //load payload + pkt[packet_info.num_header_words32+0] = uhd::htonx<boost::uint32_t>(0); + pkt[packet_info.num_header_words32+1] = uhd::htonx<boost::uint32_t>(seq32); + + //send the buffer over the interface + buff->commit(sizeof(boost::uint32_t)*(packet_info.num_packet_words32)); +} + + +/*********************************************************************** + * TX flow control handler + **********************************************************************/ +struct x300_tx_fc_guts_t +{ + x300_tx_fc_guts_t(void): + stream_channel(0), + device_channel(0), + last_seq_out(0), + last_seq_ack(0), + seq_queue(1){} + size_t stream_channel; + size_t device_channel; + size_t last_seq_out; + size_t last_seq_ack; + bounded_buffer<size_t> seq_queue; + boost::shared_ptr<x300_impl::async_md_type> async_queue; + boost::shared_ptr<x300_impl::async_md_type> old_async_queue; +}; + +static size_t get_tx_flow_control_window(size_t frame_size, const device_addr_t& tx_args) +{ + double hw_buff_size = tx_args.cast<double>("send_buff_size", X300_TX_HW_BUFF_SIZE); + size_t window_in_pkts = (static_cast<size_t>(hw_buff_size) / frame_size); + if (window_in_pkts == 0) { + throw uhd::value_error("send_buff_size must be larger than the send_frame_size."); + } + return window_in_pkts; +} + +static void handle_tx_async_msgs(boost::shared_ptr<x300_tx_fc_guts_t> guts, zero_copy_if::sptr xport, bool big_endian, x300_clock_ctrl::sptr clock) +{ + 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(boost::uint32_t); + const boost::uint32_t *packet_buff = buff->cast<const boost::uint32_t *>(); + + //unpacking can fail + uint32_t (*endian_conv)(uint32_t) = uhd::ntohx; + try + { + if (big_endian) + { + x300_if_hdr_unpack_be(packet_buff, if_packet_info); + endian_conv = uhd::ntohx; + } + else + { + x300_if_hdr_unpack_le(packet_buff, if_packet_info); + endian_conv = uhd::wtohx; + } + } + catch(const std::exception &ex) + { + UHD_MSG(error) << "Error parsing async message packet: " << ex.what() << std::endl; + return; + } + + //catch the flow control packets and react + if (endian_conv(packet_buff[if_packet_info.num_header_words32+0]) == 0) + { + const size_t seq = endian_conv(packet_buff[if_packet_info.num_header_words32+1]); + guts->seq_queue.push_with_haste(seq); + return; + } + + //fill in the async metadata + async_metadata_t metadata; + load_metadata_from_buff( + endian_conv, metadata, if_packet_info, packet_buff, + clock->get_master_clock_rate(), guts->stream_channel); + guts->async_queue->push_with_pop_on_full(metadata); + metadata.channel = guts->device_channel; + guts->old_async_queue->push_with_pop_on_full(metadata); + standard_async_msg_prints(metadata); +} + +static managed_send_buffer::sptr get_tx_buff_with_flowctrl( + task::sptr /*holds ref*/, + boost::shared_ptr<x300_tx_fc_guts_t> guts, + zero_copy_if::sptr xport, + size_t fc_pkt_window, + const double timeout +){ + while (true) + { + const size_t delta = (guts->last_seq_out & 0xfff) - (guts->last_seq_ack & 0xfff); + if ((delta & 0xfff) <= fc_pkt_window) break; + + const bool ok = guts->seq_queue.pop_with_timed_wait(guts->last_seq_ack, timeout); + if (not ok) return managed_send_buffer::sptr(); //timeout waiting for flow control + } + + managed_send_buffer::sptr buff = xport->get_send_buff(timeout); + if (buff) guts->last_seq_out++; //update seq, this will actually be a send + return buff; +} + +/*********************************************************************** + * Async Data + **********************************************************************/ +bool x300_impl::recv_async_msg( + async_metadata_t &async_metadata, double timeout +){ + return _async_md->pop_with_timed_wait(async_metadata, timeout); +} + +/*********************************************************************** + * Receive streamer + **********************************************************************/ +rx_streamer::sptr x300_impl::get_rx_stream(const uhd::stream_args_t &args_) +{ + boost::mutex::scoped_lock lock(_transport_setup_mutex); + stream_args_t args = args_; + + //setup defaults for unspecified values + if (not args.otw_format.empty() and args.otw_format != "sc16") + { + throw uhd::value_error("x300_impl::get_rx_stream only supports otw_format sc16"); + } + args.otw_format = "sc16"; + args.channels = args.channels.empty()? std::vector<size_t>(1, 0) : args.channels; + + boost::shared_ptr<sph::recv_packet_streamer> my_streamer; + for (size_t stream_i = 0; stream_i < args.channels.size(); stream_i++) + { + // Find the mainboard and subdev that corresponds to channel args.channels[stream_i] + const size_t chan = args.channels[stream_i]; + size_t mb_chan = chan, mb_index; + for (mb_index = 0; mb_index < _mb.size(); mb_index++) { + const subdev_spec_t &curr_subdev_spec = + _tree->access<subdev_spec_t>("/mboards/" + boost::lexical_cast<std::string>(mb_index) / "rx_subdev_spec").get(); + if (mb_chan < curr_subdev_spec.size()) { + break; + } else { + mb_chan -= curr_subdev_spec.size(); + } + } + + // Find the DSP that corresponds to this mainboard and subdev + UHD_ASSERT_THROW(mb_index < _mb.size()); + mboard_members_t &mb = _mb[mb_index]; + const std::vector<size_t> dsp_map = _tree->access<std::vector<size_t> >("/mboards/" + boost::lexical_cast<std::string>(mb_index) / "rx_chan_dsp_mapping") + .get(); //.at(mb_chan); + UHD_ASSERT_THROW(mb_chan < dsp_map.size()); + const size_t radio_index = dsp_map[mb_chan]; + UHD_ASSERT_THROW(radio_index < 2); + radio_perifs_t &perif = mb.radio_perifs[radio_index]; + + //setup the dsp transport hints (default to a large recv buff) + device_addr_t device_addr = mb.recv_args; + if (not device_addr.has_key("recv_buff_size")) + { + if (mb.xport_path != "nirio") { + //For the ethernet transport, the buffer has to be set before creating + //the transport because it is independent of the frame size and # frames + //For nirio, the buffer size is not configurable by the user + #if defined(UHD_PLATFORM_MACOS) || defined(UHD_PLATFORM_BSD) + //limit buffer resize on macos or it will error + device_addr["recv_buff_size"] = boost::lexical_cast<std::string>(X300_RX_SW_BUFF_SIZE_ETH_MACOS); + #elif defined(UHD_PLATFORM_LINUX) || defined(UHD_PLATFORM_WIN32) + //set to half-a-second of buffering at max rate + device_addr["recv_buff_size"] = boost::lexical_cast<std::string>(X300_RX_SW_BUFF_SIZE_ETH); + #endif + } + } + + //allocate sid and create transport + uint8_t dest = (radio_index == 0)? X300_XB_DST_R0 : X300_XB_DST_R1; + boost::uint32_t data_sid; + UHD_LOG << "creating rx stream " << device_addr.to_string() << std::endl; + both_xports_t xport = this->make_transport(mb_index, dest, X300_RADIO_DEST_PREFIX_RX, device_addr, data_sid); + UHD_LOG << boost::format("data_sid = 0x%08x, actual recv_buff_size = %d\n") % data_sid % xport.recv_buff_size << std::endl; + + //calculate packet size + static const size_t hdr_size = 0 + + vrt::num_vrl_words32*sizeof(boost::uint32_t) + + vrt::max_if_hdr_words32*sizeof(boost::uint32_t) + + sizeof(vrt::if_packet_info_t().tlr) //forced to have trailer + - sizeof(vrt::if_packet_info_t().cid) //no class id ever used + - sizeof(vrt::if_packet_info_t().tsi) //no int time ever used + ; + const size_t bpp = xport.recv->get_recv_frame_size() - hdr_size; // bytes per packet + const size_t bpi = convert::get_bytes_per_item(args.otw_format); // bytes per item + const size_t spp = unsigned(args.args.cast<double>("spp", bpp/bpi)); // samples per packet + + //make the new streamer given the samples per packet + if (not my_streamer) my_streamer = boost::make_shared<sph::recv_packet_streamer>(spp); + my_streamer->resize(args.channels.size()); + + //init some streamer stuff + std::string conv_endianness; + if (mb.if_pkt_is_big_endian) { + my_streamer->set_vrt_unpacker(&x300_if_hdr_unpack_be); + conv_endianness = "be"; + } else { + my_streamer->set_vrt_unpacker(&x300_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); + + perif.framer->clear(); + perif.framer->set_nsamps_per_packet(spp); //seems to be a good place to set this + perif.framer->set_sid((data_sid << 16) | (data_sid >> 16)); + perif.framer->setup(args); + perif.ddc->setup(args); + + //flow control setup + const size_t fc_window = get_rx_flow_control_window(xport.recv->get_recv_frame_size(), xport.recv_buff_size, device_addr); + const size_t fc_handle_window = std::max<size_t>(1, fc_window / X300_RX_FC_REQUEST_FREQ); + + UHD_LOG << "RX Flow Control Window = " << fc_window << ", RX Flow Control Handler Window = " << fc_handle_window << std::endl; + + perif.framer->configure_flow_control(fc_window); + + boost::shared_ptr<boost::uint32_t> seq32(new boost::uint32_t(0)); + //Give the streamer a functor to get the recv_buffer + //bind requires a zero_copy_if::sptr to add a streamer->xport lifetime dependency + my_streamer->set_xport_chan_get_buff( + stream_i, + boost::bind(&zero_copy_if::get_recv_buff, xport.recv, _1), + true /*flush*/ + ); + //Give the streamer a functor to handle overflows + //bind requires a weak_ptr to break the a streamer->streamer circular dependency + //Using "this" is OK because we know that x300_impl will outlive the streamer + my_streamer->set_overflow_handler( + stream_i, + boost::bind(&x300_impl::handle_overflow, this, boost::ref(perif), boost::weak_ptr<uhd::rx_streamer>(my_streamer)) + ); + //Give the streamer a functor to send flow control messages + //handle_rx_flowctrl is static and has no lifetime issues + my_streamer->set_xport_handle_flowctrl( + stream_i, boost::bind(&handle_rx_flowctrl, data_sid, xport.send, mb.if_pkt_is_big_endian, seq32, _1), + fc_handle_window, + true/*init*/ + ); + //Give the streamer a functor issue stream cmd + //bind requires a rx_vita_core_3000::sptr to add a streamer->framer lifetime dependency + my_streamer->set_issue_stream_cmd( + stream_i, boost::bind(&rx_vita_core_3000::issue_stream_command, perif.framer, _1) + ); + + //Store a weak pointer to prevent a streamer->x300_impl->streamer circular dependency + mb.rx_streamers[radio_index] = boost::weak_ptr<sph::recv_packet_streamer>(my_streamer); + + //sets all tick and samp rates on this streamer + const fs_path mb_path = "/mboards/"+boost::lexical_cast<std::string>(mb_index); + _tree->access<double>(mb_path / "tick_rate").update(); + _tree->access<double>(mb_path / "rx_dsps" / boost::lexical_cast<std::string>(radio_index) / "rate" / "value").update(); + } + + return my_streamer; +} + +void x300_impl::handle_overflow(x300_impl::radio_perifs_t &perif, boost::weak_ptr<uhd::rx_streamer> streamer) +{ + boost::shared_ptr<sph::recv_packet_streamer> my_streamer = + boost::dynamic_pointer_cast<sph::recv_packet_streamer>(streamer.lock()); + if (not my_streamer) return; //If the rx_streamer has expired then overflow handling makes no sense. + + if (my_streamer->get_num_channels() == 1) + { + perif.framer->handle_overflow(); + return; + } + + ///////////////////////////////////////////////////////////// + // MIMO overflow recovery time + ///////////////////////////////////////////////////////////// + //find out if we were in continuous mode before stopping + const bool in_continuous_streaming_mode = perif.framer->in_continuous_streaming_mode(); + //stop streaming + my_streamer->issue_stream_cmd(stream_cmd_t::STREAM_MODE_STOP_CONTINUOUS); + //flush transports + my_streamer->flush_all(0.001); + //restart streaming + if (in_continuous_streaming_mode) + { + stream_cmd_t stream_cmd(stream_cmd_t::STREAM_MODE_START_CONTINUOUS); + stream_cmd.stream_now = false; + stream_cmd.time_spec = perif.time64->get_time_now() + time_spec_t(0.01); + my_streamer->issue_stream_cmd(stream_cmd); + } +} + +/*********************************************************************** + * Transmit streamer + **********************************************************************/ +tx_streamer::sptr x300_impl::get_tx_stream(const uhd::stream_args_t &args_) +{ + boost::mutex::scoped_lock lock(_transport_setup_mutex); + stream_args_t args = args_; + + //setup defaults for unspecified values + if (not args.otw_format.empty() and args.otw_format != "sc16") + { + throw uhd::value_error("x300_impl::get_rx_stream only supports otw_format sc16"); + } + args.otw_format = "sc16"; + args.channels = args.channels.empty()? std::vector<size_t>(1, 0) : args.channels; + + //shared async queue for all channels in streamer + boost::shared_ptr<async_md_type> async_md(new async_md_type(1000/*messages deep*/)); + + boost::shared_ptr<sph::send_packet_streamer> my_streamer; + for (size_t stream_i = 0; stream_i < args.channels.size(); stream_i++) + { + // Find the mainboard and subdev that corresponds to channel args.channels[stream_i] + const size_t chan = args.channels[stream_i]; + size_t mb_chan = chan, mb_index; + for (mb_index = 0; mb_index < _mb.size(); mb_index++) { + const subdev_spec_t &curr_subdev_spec = + _tree->access<subdev_spec_t>("/mboards/" + boost::lexical_cast<std::string>(mb_index) / "tx_subdev_spec").get(); + if (mb_chan < curr_subdev_spec.size()) { + break; + } else { + mb_chan -= curr_subdev_spec.size(); + } + } + // Find the DSP that corresponds to this mainboard and subdev + mboard_members_t &mb = _mb[mb_index]; + const size_t radio_index = _tree->access<std::vector<size_t> >("/mboards/" + boost::lexical_cast<std::string>(mb_index) / "tx_chan_dsp_mapping") + .get().at(mb_chan); + radio_perifs_t &perif = mb.radio_perifs[radio_index]; + + //setup the dsp transport hints (TODO) + device_addr_t device_addr = mb.send_args; + + //allocate sid and create transport + uint8_t dest = (radio_index == 0)? X300_XB_DST_R0 : X300_XB_DST_R1; + boost::uint32_t data_sid; + UHD_LOG << "creating tx stream " << device_addr.to_string() << std::endl; + both_xports_t xport = this->make_transport(mb_index, dest, X300_RADIO_DEST_PREFIX_TX, device_addr, data_sid); + UHD_LOG << boost::format("data_sid = 0x%08x\n") % data_sid << std::endl; + + //calculate packet size + static const size_t hdr_size = 0 + + vrt::num_vrl_words32*sizeof(boost::uint32_t) + + vrt::max_if_hdr_words32*sizeof(boost::uint32_t) + //+ sizeof(vrt::if_packet_info_t().tlr) //forced to have trailer + - sizeof(vrt::if_packet_info_t().cid) //no class id ever used + - sizeof(vrt::if_packet_info_t().tsi) //no int time ever used + ; + const size_t bpp = xport.send->get_send_frame_size() - hdr_size; + const size_t bpi = convert::get_bytes_per_item(args.otw_format); + const size_t spp = unsigned(args.args.cast<double>("spp", bpp/bpi)); + + //make the new streamer given the samples per packet + if (not my_streamer) my_streamer = boost::make_shared<sph::send_packet_streamer>(spp); + my_streamer->resize(args.channels.size()); + + std::string conv_endianness; + if (mb.if_pkt_is_big_endian) { + my_streamer->set_vrt_packer(&x300_if_hdr_pack_be); + conv_endianness = "be"; + } else { + my_streamer->set_vrt_packer(&x300_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); + + perif.deframer->clear(); + perif.deframer->setup(args); + perif.duc->setup(args); + + //flow control setup + size_t fc_window = get_tx_flow_control_window(xport.send->get_send_frame_size(), device_addr); //In packets + const size_t fc_handle_window = std::max<size_t>(1, fc_window/X300_TX_FC_RESPONSE_FREQ); + + UHD_LOG << "TX Flow Control Window = " << fc_window << ", TX Flow Control Handler Window = " << fc_handle_window << std::endl; + + perif.deframer->configure_flow_control(0/*cycs off*/, fc_handle_window); + boost::shared_ptr<x300_tx_fc_guts_t> guts(new x300_tx_fc_guts_t()); + guts->stream_channel = stream_i; + guts->device_channel = chan; + guts->async_queue = async_md; + guts->old_async_queue = _async_md; + task::sptr task = task::make(boost::bind(&handle_tx_async_msgs, guts, xport.recv, mb.if_pkt_is_big_endian, mb.clock)); + + //Give the streamer a functor to get the send buffer + //get_tx_buff_with_flowctrl is static so bind has no lifetime issues + //xport.send (sptr) is required to add streamer->data-transport lifetime dependency + //task (sptr) is required to add a streamer->async-handler lifetime dependency + my_streamer->set_xport_chan_get_buff( + stream_i, + boost::bind(&get_tx_buff_with_flowctrl, task, guts, xport.send, fc_window, _1) + ); + //Give the streamer a functor handled received async messages + my_streamer->set_async_receiver( + boost::bind(&async_md_type::pop_with_timed_wait, async_md, _1, _2) + ); + my_streamer->set_xport_chan_sid(stream_i, true, data_sid); + my_streamer->set_enable_trailer(false); //TODO not implemented trailer support yet + + //Store a weak pointer to prevent a streamer->x300_impl->streamer circular dependency + mb.tx_streamers[radio_index] = boost::weak_ptr<sph::send_packet_streamer>(my_streamer); + + //sets all tick and samp rates on this streamer + const fs_path mb_path = "/mboards/"+boost::lexical_cast<std::string>(mb_index); + _tree->access<double>(mb_path / "tick_rate").update(); + _tree->access<double>(mb_path / "tx_dsps" / boost::lexical_cast<std::string>(radio_index) / "rate" / "value").update(); + } + + return my_streamer; +} |