1 files changed, 227 insertions, 0 deletions
diff --git a/host/lib/usrp/b100/io_impl.cpp b/host/lib/usrp/b100/io_impl.cpp
new file mode 100644
index 000000000..723756dcc
--- /dev/null
+++ b/host/lib/usrp/b100/io_impl.cpp
@@ -0,0 +1,227 @@
+//
+// Copyright 2011-2012 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 "validate_subdev_spec.hpp"
+#include "../../transport/super_recv_packet_handler.hpp"
+#include "../../transport/super_send_packet_handler.hpp"
+#include "b100_impl.hpp"
+#include <boost/bind.hpp>
+#include <boost/format.hpp>
+#include <boost/bind.hpp>
+#include <boost/thread.hpp>
+#include <uhd/utils/msg.hpp>
+#include <uhd/utils/log.hpp>
+#include <boost/make_shared.hpp>
+
+using namespace uhd;
+using namespace uhd::usrp;
+using namespace uhd::transport;
+
+void b100_impl::update_rates(void){
+    const fs_path mb_path = "/mboards/0";
+    _tree->access<double>(mb_path / "tick_rate").update();
+
+    //and now that the tick rate is set, init the host rates to something
+    BOOST_FOREACH(const std::string &name, _tree->list(mb_path / "rx_dsps")){
+        _tree->access<double>(mb_path / "rx_dsps" / name / "rate" / "value").update();
+    }
+    BOOST_FOREACH(const std::string &name, _tree->list(mb_path / "tx_dsps")){
+        _tree->access<double>(mb_path / "tx_dsps" / name / "rate" / "value").update();
+    }
+}
+
+void b100_impl::update_tick_rate(const double rate){
+
+    //update the tick rate on all existing streamers -> thread safe
+    for (size_t i = 0; i < _rx_streamers.size(); i++){
+        boost::shared_ptr<sph::recv_packet_streamer> my_streamer =
+            boost::dynamic_pointer_cast<sph::recv_packet_streamer>(_rx_streamers[i].lock());
+        if (my_streamer.get() == NULL) continue;
+        my_streamer->set_tick_rate(rate);
+    }
+    for (size_t i = 0; i < _tx_streamers.size(); i++){
+        boost::shared_ptr<sph::send_packet_streamer> my_streamer =
+            boost::dynamic_pointer_cast<sph::send_packet_streamer>(_tx_streamers[i].lock());
+        if (my_streamer.get() == NULL) continue;
+        my_streamer->set_tick_rate(rate);
+    }
+}
+
+void b100_impl::update_rx_samp_rate(const size_t dspno, const double rate){
+    boost::shared_ptr<sph::recv_packet_streamer> my_streamer =
+        boost::dynamic_pointer_cast<sph::recv_packet_streamer>(_rx_streamers[dspno].lock());
+    if (my_streamer.get() == NULL) return;
+
+    my_streamer->set_samp_rate(rate);
+    const double adj = _rx_dsps[dspno]->get_scaling_adjustment();
+    my_streamer->set_scale_factor(adj);
+}
+
+void b100_impl::update_tx_samp_rate(const size_t dspno, const double rate){
+    boost::shared_ptr<sph::send_packet_streamer> my_streamer =
+        boost::dynamic_pointer_cast<sph::send_packet_streamer>(_tx_streamers[dspno].lock());
+    if (my_streamer.get() == NULL) return;
+
+    my_streamer->set_samp_rate(rate);
+    const double adj = _tx_dsp->get_scaling_adjustment();
+    my_streamer->set_scale_factor(adj);
+}
+
+void b100_impl::update_rx_subdev_spec(const uhd::usrp::subdev_spec_t &spec){
+    fs_path root = "/mboards/0/dboards";
+
+    //sanity checking
+    validate_subdev_spec(_tree, spec, "rx");
+
+    //setup mux for this spec
+    bool fe_swapped = false;
+    for (size_t i = 0; i < spec.size(); i++){
+        const std::string conn = _tree->access<std::string>(root / spec[i].db_name / "rx_frontends" / spec[i].sd_name / "connection").get();
+        if (i == 0 and (conn == "QI" or conn == "Q")) fe_swapped = true;
+        _rx_dsps[i]->set_mux(conn, fe_swapped);
+    }
+    _rx_fe->set_mux(fe_swapped);
+}
+
+void b100_impl::update_tx_subdev_spec(const uhd::usrp::subdev_spec_t &spec){
+    fs_path root = "/mboards/0/dboards";
+
+    //sanity checking
+    validate_subdev_spec(_tree, spec, "tx");
+
+    //set the mux for this spec
+    const std::string conn = _tree->access<std::string>(root / spec[0].db_name / "tx_frontends" / spec[0].sd_name / "connection").get();
+    _tx_fe->set_mux(conn);
+}
+
+/***********************************************************************
+ * Async Data
+ **********************************************************************/
+bool b100_impl::recv_async_msg(
+    async_metadata_t &async_metadata, double timeout
+){
+    return _fifo_ctrl->pop_async_msg(async_metadata, timeout);
+}
+
+/***********************************************************************
+ * Receive streamer
+ **********************************************************************/
+rx_streamer::sptr b100_impl::get_rx_stream(const uhd::stream_args_t &args_){
+    stream_args_t args = args_;
+
+    //setup defaults for unspecified values
+    args.otw_format = args.otw_format.empty()? "sc16" : args.otw_format;
+    args.channels = args.channels.empty()? std::vector<size_t>(1, 0) : args.channels;
+
+    //calculate packet size
+    static const size_t hdr_size = 0
+        + 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 = _data_transport->get_recv_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
+    boost::shared_ptr<sph::recv_packet_streamer> my_streamer = boost::make_shared<sph::recv_packet_streamer>(spp);
+
+    //init some streamer stuff
+    my_streamer->resize(args.channels.size());
+    my_streamer->set_vrt_unpacker(&vrt::if_hdr_unpack_le);
+
+    //set the converter
+    uhd::convert::id_type id;
+    id.input_format = args.otw_format + "_item32_le";
+    id.num_inputs = 1;
+    id.output_format = args.cpu_format;
+    id.num_outputs = 1;
+    my_streamer->set_converter(id);
+
+    //bind callbacks for the handler
+    for (size_t chan_i = 0; chan_i < args.channels.size(); chan_i++){
+        const size_t dsp = args.channels[chan_i];
+        _rx_dsps[dsp]->set_nsamps_per_packet(spp); //seems to be a good place to set this
+        _rx_dsps[dsp]->setup(args);
+        my_streamer->set_xport_chan_get_buff(chan_i, boost::bind(
+            &recv_packet_demuxer::get_recv_buff, _recv_demuxer, dsp, _1
+        ), true /*flush*/);
+        my_streamer->set_overflow_handler(chan_i, boost::bind(
+            &rx_dsp_core_200::handle_overflow, _rx_dsps[dsp]
+        ));
+        _rx_streamers[dsp] = my_streamer; //store weak pointer
+    }
+
+    //sets all tick and samp rates on this streamer
+    this->update_rates();
+
+    return my_streamer;
+}
+
+/***********************************************************************
+ * Transmit streamer
+ **********************************************************************/
+tx_streamer::sptr b100_impl::get_tx_stream(const uhd::stream_args_t &args_){
+    stream_args_t args = args_;
+
+    //setup defaults for unspecified values
+    args.otw_format = args.otw_format.empty()? "sc16" : args.otw_format;
+    args.channels = args.channels.empty()? std::vector<size_t>(1, 0) : args.channels;
+
+    //calculate packet size
+    static const size_t hdr_size = 0
+        + 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().sid) //no stream id ever used
+        - sizeof(vrt::if_packet_info_t().cid) //no class id ever used
+        - sizeof(vrt::if_packet_info_t().tsi) //no int time ever used
+    ;
+    static const size_t bpp = _data_transport->get_send_frame_size() - hdr_size;
+    const size_t spp = bpp/convert::get_bytes_per_item(args.otw_format);
+
+    //make the new streamer given the samples per packet
+    boost::shared_ptr<sph::send_packet_streamer> my_streamer = boost::make_shared<sph::send_packet_streamer>(spp);
+
+    //init some streamer stuff
+    my_streamer->resize(args.channels.size());
+    my_streamer->set_vrt_packer(&vrt::if_hdr_pack_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_le";
+    id.num_outputs = 1;
+    my_streamer->set_converter(id);
+
+    //bind callbacks for the handler
+    for (size_t chan_i = 0; chan_i < args.channels.size(); chan_i++){
+        const size_t dsp = args.channels[chan_i];
+        UHD_ASSERT_THROW(dsp == 0); //always 0
+        _tx_dsp->setup(args);
+        my_streamer->set_xport_chan_get_buff(chan_i, boost::bind(
+            &zero_copy_if::get_send_buff, _data_transport, _1
+        ));
+        _tx_streamers[dsp] = my_streamer; //store weak pointer
+    }
+
+    //sets all tick and samp rates on this streamer
+    this->update_rates();
+
+    return my_streamer;
+}