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//
// Copyright 2010 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 "../../transport/super_recv_packet_handler.hpp"
#include "../../transport/super_send_packet_handler.hpp"
#include "usrp_commands.h"
#include "b100_impl.hpp"
#include "b100_regs.hpp"
#include <uhd/usrp/dsp_utils.hpp>
#include <uhd/usrp/dsp_props.hpp>
#include <uhd/utils/thread_priority.hpp>
#include <uhd/transport/bounded_buffer.hpp>
#include <boost/bind.hpp>
#include <boost/format.hpp>
#include <boost/asio.hpp>
#include <boost/bind.hpp>
#include <boost/thread.hpp>
#include <uhd/utils/msg.hpp>
#include <uhd/utils/log.hpp>
#include <iostream>
using namespace uhd;
using namespace uhd::usrp;
using namespace uhd::transport;
namespace asio = boost::asio;
/***********************************************************************
* IO Implementation Details
**********************************************************************/
struct b100_impl::io_impl{
io_impl(zero_copy_if::sptr data_transport):
data_transport(data_transport)
{
/* NOP */
}
~io_impl(void){
//drain the rx buffs
//while(data_transport->get_recv_buff().get() != NULL){
/* NOP */
//}
}
zero_copy_if::sptr &data_transport;
sph::recv_packet_handler recv_handler;
sph::send_packet_handler send_handler;
bool continuous_streaming;
};
/***********************************************************************
* Initialize internals within this file
**********************************************************************/
void b100_impl::io_init(void){
_recv_otw_type.width = 16;
_recv_otw_type.shift = 0;
_recv_otw_type.byteorder = otw_type_t::BO_LITTLE_ENDIAN;
_send_otw_type.width = 16;
_send_otw_type.shift = 0;
_send_otw_type.byteorder = otw_type_t::BO_LITTLE_ENDIAN;
_iface->reset_gpif(6);
//reset state machines
_iface->poke32(B100_REG_CTRL_TX_CLEAR_UNDERRUN, 0);
_iface->poke32(B100_REG_CTRL_RX_CLEAR_OVERRUN, 0);
_io_impl = UHD_PIMPL_MAKE(io_impl, (_data_transport));
//setup rx data path
_iface->poke32(B100_REG_CTRL_RX_NSAMPS_PER_PKT, get_max_recv_samps_per_packet());
UHD_LOGV(always) << "IO: Using " << get_max_recv_samps_per_packet() << " samples per packet" << std::endl;
_iface->poke32(B100_REG_CTRL_RX_NCHANNELS, 1);
_iface->poke32(B100_REG_CTRL_RX_VRT_HEADER, 0
| (0x1 << 28) //if data with stream id
| (0x1 << 26) //has trailer
| (0x3 << 22) //integer time other
| (0x1 << 20) //fractional time sample count
);
_iface->poke32(B100_REG_CTRL_RX_VRT_TRAILER, 0);
//set the streamid to reset the seq num
_iface->poke32(B100_REG_CTRL_TX_REPORT_SID, 0);
//setup the tx policy
_iface->poke32(B100_REG_CTRL_TX_POLICY, B100_FLAG_CTRL_TX_POLICY_NEXT_PACKET);
//set the expected packet size in USB frames
_iface->poke32(B100_REG_MISC_RX_LEN, 4);
update_transport_channel_mapping();
}
void b100_impl::update_transport_channel_mapping(void){
if (_io_impl.get() == NULL) return; //not inited yet
//set all of the relevant properties on the handler
boost::mutex::scoped_lock recv_lock = _io_impl->recv_handler.get_scoped_lock();
_io_impl->recv_handler.resize(_rx_subdev_spec.size());
_io_impl->recv_handler.set_vrt_unpacker(&vrt::if_hdr_unpack_le);
_io_impl->recv_handler.set_tick_rate(_clock_ctrl->get_fpga_clock_rate());
_io_impl->recv_handler.set_samp_rate(_rx_ddc_proxy->get_link()[DSP_PROP_HOST_RATE].as<double>());
for (size_t chan = 0; chan < _io_impl->recv_handler.size(); chan++){
_io_impl->recv_handler.set_xport_chan_get_buff(chan, boost::bind(
&uhd::transport::zero_copy_if::get_recv_buff, _io_impl->data_transport, _1
));
_io_impl->recv_handler.set_overflow_handler(chan, boost::bind(
&b100_impl::handle_overrun, this, chan
));
}
_io_impl->recv_handler.set_converter(_recv_otw_type);
//set all of the relevant properties on the handler
boost::mutex::scoped_lock send_lock = _io_impl->send_handler.get_scoped_lock();
_io_impl->send_handler.resize(_tx_subdev_spec.size());
_io_impl->send_handler.set_vrt_packer(&vrt::if_hdr_pack_le);
_io_impl->send_handler.set_tick_rate(_clock_ctrl->get_fpga_clock_rate());
_io_impl->send_handler.set_samp_rate(_tx_duc_proxy->get_link()[DSP_PROP_HOST_RATE].as<double>());
for (size_t chan = 0; chan < _io_impl->send_handler.size(); chan++){
_io_impl->send_handler.set_xport_chan_get_buff(chan, boost::bind(
&uhd::transport::zero_copy_if::get_send_buff, _io_impl->data_transport, _1
));
}
_io_impl->send_handler.set_converter(_send_otw_type);
_io_impl->send_handler.set_max_samples_per_packet(get_max_send_samps_per_packet());
}
/***********************************************************************
* Data send + helper functions
**********************************************************************/
size_t b100_impl::get_max_send_samps_per_packet(void) const {
static const size_t hdr_size = 0
+ vrt::max_if_hdr_words32*sizeof(boost::uint32_t)
- sizeof(vrt::if_packet_info_t().cid) //no class id ever used
;
static const size_t bpp = 2048 - hdr_size;
return bpp / _send_otw_type.get_sample_size();
}
size_t b100_impl::send(
const send_buffs_type &buffs, size_t nsamps_per_buff,
const tx_metadata_t &metadata, const io_type_t &io_type,
send_mode_t send_mode, double timeout
){
return _io_impl->send_handler.send(
buffs, nsamps_per_buff,
metadata, io_type,
send_mode, timeout
);
}
/***********************************************************************
* Data recv + helper functions
**********************************************************************/
size_t b100_impl::get_max_recv_samps_per_packet(void) const {
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
;
size_t bpp = 2048 - hdr_size; //limited by FPGA pkt buffer size
return bpp/_recv_otw_type.get_sample_size();
}
size_t b100_impl::recv(
const recv_buffs_type &buffs, size_t nsamps_per_buff,
rx_metadata_t &metadata, const io_type_t &io_type,
recv_mode_t recv_mode, double timeout
){
return _io_impl->recv_handler.recv(
buffs, nsamps_per_buff,
metadata, io_type,
recv_mode, timeout
);
}
void b100_impl::issue_stream_cmd(const stream_cmd_t &stream_cmd)
{
_io_impl->continuous_streaming = (stream_cmd.stream_mode == stream_cmd_t::STREAM_MODE_START_CONTINUOUS);
_iface->poke32(B100_REG_CTRL_RX_STREAM_CMD, dsp_type1::calc_stream_cmd_word(stream_cmd));
_iface->poke32(B100_REG_CTRL_RX_TIME_SECS, boost::uint32_t(stream_cmd.time_spec.get_full_secs()));
_iface->poke32(B100_REG_CTRL_RX_TIME_TICKS, stream_cmd.time_spec.get_tick_count(_clock_ctrl->get_fpga_clock_rate()));
if (stream_cmd.stream_mode == stream_cmd_t::STREAM_MODE_STOP_CONTINUOUS) {
while(_io_impl->data_transport->get_recv_buff().get() != NULL){
/* NOP */
}
}
}
void b100_impl::handle_overrun(size_t){
if (_io_impl->continuous_streaming){
this->issue_stream_cmd(stream_cmd_t::STREAM_MODE_START_CONTINUOUS);
}
}
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