From aa95e53a91fa52b61b6796fcfc811251b20dcb73 Mon Sep 17 00:00:00 2001 From: Josh Blum Date: Sat, 28 Jan 2012 16:08:17 -0800 Subject: dsp rework: work on scaling and args parsing on RX and TX dsp This simplified some copy pasta in the io_impl.cpp files, and adds a place for sc8 tx mode in the tx dsp core code. --- host/lib/usrp/b100/io_impl.cpp | 13 ++++------- host/lib/usrp/cores/rx_dsp_core_200.cpp | 12 ++++++----- host/lib/usrp/cores/rx_dsp_core_200.hpp | 3 ++- host/lib/usrp/cores/tx_dsp_core_200.cpp | 38 ++++++++++++++++++++++++++++++--- host/lib/usrp/cores/tx_dsp_core_200.hpp | 6 ++++-- host/lib/usrp/e100/io_impl.cpp | 13 ++++------- host/lib/usrp/usrp2/io_impl.cpp | 13 ++++------- 7 files changed, 60 insertions(+), 38 deletions(-) (limited to 'host') diff --git a/host/lib/usrp/b100/io_impl.cpp b/host/lib/usrp/b100/io_impl.cpp index c98f71754..6e9e017aa 100644 --- a/host/lib/usrp/b100/io_impl.cpp +++ b/host/lib/usrp/b100/io_impl.cpp @@ -154,6 +154,8 @@ void b100_impl::update_tx_samp_rate(const size_t dspno, const double rate){ 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){ @@ -202,7 +204,6 @@ rx_streamer::sptr b100_impl::get_rx_stream(const uhd::stream_args_t &args_){ //setup defaults for unspecified values args.otw_format = args.otw_format.empty()? "sc16" : args.otw_format; args.channels = args.channels.empty()? std::vector(1, 0) : args.channels; - const unsigned sc8_scalar = unsigned(args.args.cast("scalar", 1)); //calculate packet size static const size_t hdr_size = 0 @@ -233,8 +234,7 @@ rx_streamer::sptr b100_impl::get_rx_stream(const uhd::stream_args_t &args_){ 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 - if (not args.args.has_key("noclear")) _rx_dsps[dsp]->clear(); - _rx_dsps[dsp]->set_format(args.otw_format, sc8_scalar); + _rx_dsps[dsp]->setup(args); my_streamer->set_xport_chan_get_buff(chan_i, boost::bind( &recv_packet_demuxer::get_recv_buff, _io_impl->demuxer, dsp, _1 ), true /*flush*/); @@ -260,10 +260,6 @@ tx_streamer::sptr b100_impl::get_tx_stream(const uhd::stream_args_t &args_){ args.otw_format = args.otw_format.empty()? "sc16" : args.otw_format; args.channels = args.channels.empty()? std::vector(1, 0) : args.channels; - if (args.otw_format != "sc16"){ - throw uhd::value_error("USRP TX cannot handle requested wire format: " + args.otw_format); - } - //calculate packet size static const size_t hdr_size = 0 + vrt::max_if_hdr_words32*sizeof(boost::uint32_t) @@ -291,8 +287,7 @@ tx_streamer::sptr b100_impl::get_tx_stream(const uhd::stream_args_t &args_){ 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 - if (not args.args.has_key("noclear")) _tx_dsp->clear(); - if (args.args.has_key("underflow_policy")) _tx_dsp->set_underflow_policy(args.args["underflow_policy"]); + _tx_dsp->setup(args); my_streamer->set_xport_chan_get_buff(chan_i, boost::bind( &zero_copy_if::get_send_buff, _data_transport, _1 )); diff --git a/host/lib/usrp/cores/rx_dsp_core_200.cpp b/host/lib/usrp/cores/rx_dsp_core_200.cpp index cbc732c9c..b2bf934bc 100644 --- a/host/lib/usrp/cores/rx_dsp_core_200.cpp +++ b/host/lib/usrp/cores/rx_dsp_core_200.cpp @@ -224,17 +224,19 @@ public: if (_continuous_streaming) issue_stream_command(stream_cmd_t::STREAM_MODE_START_CONTINUOUS); } - void set_format(const std::string &format, const unsigned scale){ + void setup(const uhd::stream_args_t &stream_args){ + if (not stream_args.args.has_key("noclear")) this->clear(); + unsigned format_word = 0; - if (format == "sc16"){ + if (stream_args.otw_format == "sc16"){ format_word = 0; _extra_scaling = 1.0; } - else if (format == "sc8"){ + else if (stream_args.otw_format == "sc8"){ format_word = (1 << 0); - _extra_scaling = scale; + _extra_scaling = stream_args.args.cast("scalar", 1.0); } - else throw uhd::value_error("USRP RX cannot handle requested wire format: " + format); + else throw uhd::value_error("USRP RX cannot handle requested wire format: " + stream_args.otw_format); this->update_scalar(); diff --git a/host/lib/usrp/cores/rx_dsp_core_200.hpp b/host/lib/usrp/cores/rx_dsp_core_200.hpp index 58be51eee..b01f751e9 100644 --- a/host/lib/usrp/cores/rx_dsp_core_200.hpp +++ b/host/lib/usrp/cores/rx_dsp_core_200.hpp @@ -19,6 +19,7 @@ #define INCLUDED_LIBUHD_USRP_RX_DSP_CORE_200_HPP #include +#include #include #include #include @@ -60,7 +61,7 @@ public: virtual void handle_overflow(void) = 0; - virtual void set_format(const std::string &format, const unsigned scale) = 0; + virtual void setup(const uhd::stream_args_t &stream_args) = 0; }; #endif /* INCLUDED_LIBUHD_USRP_RX_DSP_CORE_200_HPP */ diff --git a/host/lib/usrp/cores/tx_dsp_core_200.cpp b/host/lib/usrp/cores/tx_dsp_core_200.cpp index f4c303d05..2c5b86bfc 100644 --- a/host/lib/usrp/cores/tx_dsp_core_200.cpp +++ b/host/lib/usrp/cores/tx_dsp_core_200.cpp @@ -58,6 +58,11 @@ public: ): _iface(iface), _dsp_base(dsp_base), _ctrl_base(ctrl_base), _sid(sid) { + //init to something so update method has reasonable defaults + _scaling_adjustment = 1.0; + _extra_scaling = 1.0; + _fxpt_scalar_correction = 1.0; + //init the tx control registers this->clear(); this->set_underflow_policy("next_packet"); @@ -121,13 +126,24 @@ public: // Calculate CIC interpolation (i.e., without halfband interpolators) // Calculate closest multiplier constant to reverse gain absent scale multipliers - double rate_cubed = std::pow(double(interp & 0xff), 3); - const boost::int32_t scale = boost::math::iround((4096*std::pow(2, ceil_log2(rate_cubed)))/(1.65*rate_cubed)); - _iface->poke32(REG_DSP_TX_SCALE_IQ, scale); + const double rate_pow = std::pow(double(interp & 0xff), 3); + _scaling_adjustment = std::pow(2, ceil_log2(rate_pow))/(1.65*rate_pow); + this->update_scalar(); return _tick_rate/interp_rate; } + void update_scalar(void){ + const double target_scalar = (1 << 17)*_scaling_adjustment/_extra_scaling; + const boost::int32_t actual_scalar = boost::math::iround(target_scalar); + _fxpt_scalar_correction = target_scalar/actual_scalar; //should be small + _iface->poke32(REG_DSP_TX_SCALE_IQ, actual_scalar); + } + + double get_scaling_adjustment(void){ + return _fxpt_scalar_correction*_extra_scaling*32767.; + } + double set_freq(const double freq_){ //correct for outside of rate (wrap around) double freq = std::fmod(freq_, _tick_rate); @@ -156,10 +172,26 @@ public: _iface->poke32(REG_TX_CTRL_PACKETS_PER_UP, (packets_per_up == 0)? 0 : (FLAG_TX_CTRL_UP_ENB | packets_per_up)); } + void setup(const uhd::stream_args_t &stream_args){ + if (not stream_args.args.has_key("noclear")) this->clear(); + + if (stream_args.otw_format == "sc16"){ + _extra_scaling = 1.0; + } + else throw uhd::value_error("USRP TX cannot handle requested wire format: " + stream_args.otw_format); + + this->update_scalar(); + + if (stream_args.args.has_key("underflow_policy")){ + this->set_underflow_policy(stream_args.args["underflow_policy"]); + } + } + private: wb_iface::sptr _iface; const size_t _dsp_base, _ctrl_base; double _tick_rate, _link_rate; + double _scaling_adjustment, _extra_scaling, _fxpt_scalar_correction; const boost::uint32_t _sid; }; diff --git a/host/lib/usrp/cores/tx_dsp_core_200.hpp b/host/lib/usrp/cores/tx_dsp_core_200.hpp index 4b39a5b07..0e1cfb6bc 100644 --- a/host/lib/usrp/cores/tx_dsp_core_200.hpp +++ b/host/lib/usrp/cores/tx_dsp_core_200.hpp @@ -19,6 +19,7 @@ #define INCLUDED_LIBUHD_USRP_TX_DSP_CORE_200_HPP #include +#include #include #include #include @@ -44,14 +45,15 @@ public: virtual uhd::meta_range_t get_host_rates(void) = 0; + virtual double get_scaling_adjustment(void) = 0; + virtual uhd::meta_range_t get_freq_range(void) = 0; virtual double set_freq(const double freq) = 0; virtual void set_updates(const size_t cycles_per_up, const size_t packets_per_up) = 0; - virtual void set_underflow_policy(const std::string &policy) = 0; - + virtual void setup(const uhd::stream_args_t &stream_args) = 0; }; #endif /* INCLUDED_LIBUHD_USRP_TX_DSP_CORE_200_HPP */ diff --git a/host/lib/usrp/e100/io_impl.cpp b/host/lib/usrp/e100/io_impl.cpp index 97f4db6f1..89a4ed00b 100644 --- a/host/lib/usrp/e100/io_impl.cpp +++ b/host/lib/usrp/e100/io_impl.cpp @@ -217,6 +217,8 @@ void e100_impl::update_tx_samp_rate(const size_t dspno, const double rate){ 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 e100_impl::update_rates(void){ @@ -278,7 +280,6 @@ rx_streamer::sptr e100_impl::get_rx_stream(const uhd::stream_args_t &args_){ //setup defaults for unspecified values args.otw_format = args.otw_format.empty()? "sc16" : args.otw_format; args.channels = args.channels.empty()? std::vector(1, 0) : args.channels; - const unsigned sc8_scalar = unsigned(args.args.cast("scalar", 1)); //calculate packet size static const size_t hdr_size = 0 @@ -309,8 +310,7 @@ rx_streamer::sptr e100_impl::get_rx_stream(const uhd::stream_args_t &args_){ 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 - if (not args.args.has_key("noclear")) _rx_dsps[dsp]->clear(); - _rx_dsps[dsp]->set_format(args.otw_format, sc8_scalar); + _rx_dsps[dsp]->setup(args); my_streamer->set_xport_chan_get_buff(chan_i, boost::bind( &recv_packet_demuxer::get_recv_buff, _io_impl->demuxer, dsp, _1 ), true /*flush*/); @@ -336,10 +336,6 @@ tx_streamer::sptr e100_impl::get_tx_stream(const uhd::stream_args_t &args_){ args.otw_format = args.otw_format.empty()? "sc16" : args.otw_format; args.channels = args.channels.empty()? std::vector(1, 0) : args.channels; - if (args.otw_format != "sc16"){ - throw uhd::value_error("USRP TX cannot handle requested wire format: " + args.otw_format); - } - //calculate packet size static const size_t hdr_size = 0 + vrt::max_if_hdr_words32*sizeof(boost::uint32_t) @@ -367,8 +363,7 @@ tx_streamer::sptr e100_impl::get_tx_stream(const uhd::stream_args_t &args_){ 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 - if (not args.args.has_key("noclear")) _tx_dsp->clear(); - if (args.args.has_key("underflow_policy")) _tx_dsp->set_underflow_policy(args.args["underflow_policy"]); + _tx_dsp->setup(args); my_streamer->set_xport_chan_get_buff(chan_i, boost::bind( &zero_copy_if::get_send_buff, _data_transport, _1 )); diff --git a/host/lib/usrp/usrp2/io_impl.cpp b/host/lib/usrp/usrp2/io_impl.cpp index 5f5369f7d..58a5df2a5 100644 --- a/host/lib/usrp/usrp2/io_impl.cpp +++ b/host/lib/usrp/usrp2/io_impl.cpp @@ -307,6 +307,8 @@ void usrp2_impl::update_tx_samp_rate(const std::string &mb, const size_t dsp, co if (my_streamer.get() == NULL) return; my_streamer->set_samp_rate(rate); + const double adj = _mbc[mb].tx_dsp->get_scaling_adjustment(); + my_streamer->set_scale_factor(adj); } void usrp2_impl::update_rates(void){ @@ -380,7 +382,6 @@ rx_streamer::sptr usrp2_impl::get_rx_stream(const uhd::stream_args_t &args_){ //setup defaults for unspecified values args.otw_format = args.otw_format.empty()? "sc16" : args.otw_format; args.channels = args.channels.empty()? std::vector(1, 0) : args.channels; - const unsigned sc8_scalar = unsigned(args.args.cast("scalar", 1)); //calculate packet size static const size_t hdr_size = 0 @@ -416,8 +417,7 @@ rx_streamer::sptr usrp2_impl::get_rx_stream(const uhd::stream_args_t &args_){ if (chan < num_chan_so_far){ const size_t dsp = chan + _mbc[mb].rx_chan_occ - num_chan_so_far; _mbc[mb].rx_dsps[dsp]->set_nsamps_per_packet(spp); //seems to be a good place to set this - if (not args.args.has_key("noclear")) _mbc[mb].rx_dsps[dsp]->clear(); - _mbc[mb].rx_dsps[dsp]->set_format(args.otw_format, sc8_scalar); + _mbc[mb].rx_dsps[dsp]->setup(args); my_streamer->set_xport_chan_get_buff(chan_i, boost::bind( &zero_copy_if::get_recv_buff, _mbc[mb].rx_dsp_xports[dsp], _1 ), true /*flush*/); @@ -447,10 +447,6 @@ tx_streamer::sptr usrp2_impl::get_tx_stream(const uhd::stream_args_t &args_){ args.otw_format = args.otw_format.empty()? "sc16" : args.otw_format; args.channels = args.channels.empty()? std::vector(1, 0) : args.channels; - if (args.otw_format != "sc16"){ - throw uhd::value_error("USRP TX cannot handle requested wire format: " + args.otw_format); - } - //calculate packet size static const size_t hdr_size = 0 + vrt::max_if_hdr_words32*sizeof(boost::uint32_t) @@ -485,10 +481,9 @@ tx_streamer::sptr usrp2_impl::get_tx_stream(const uhd::stream_args_t &args_){ if (chan < num_chan_so_far){ const size_t dsp = chan + _mbc[mb].tx_chan_occ - num_chan_so_far; if (not args.args.has_key("noclear")){ - _mbc[mb].tx_dsp->clear(); _io_impl->fc_mons[abs]->clear(); } - if (args.args.has_key("underflow_policy")) _mbc[mb].tx_dsp->set_underflow_policy(args.args["underflow_policy"]); + _mbc[mb].tx_dsp->setup(args); my_streamer->set_xport_chan_get_buff(chan_i, boost::bind( &usrp2_impl::io_impl::get_send_buff, _io_impl.get(), abs, _1 )); -- cgit v1.2.3