diff options
Diffstat (limited to 'host')
| -rw-r--r-- | host/cmake/Modules/FindLIBERIO.cmake | 34 | ||||
| -rw-r--r-- | host/include/config.h.in | 1 | ||||
| -rw-r--r-- | host/lib/CMakeLists.txt | 2 | ||||
| -rw-r--r-- | host/lib/transport/CMakeLists.txt | 10 | ||||
| -rw-r--r-- | host/lib/transport/liberio_zero_copy.cpp | 258 | ||||
| -rw-r--r-- | host/lib/transport/liberio_zero_copy.hpp | 36 |
6 files changed, 341 insertions, 0 deletions
diff --git a/host/cmake/Modules/FindLIBERIO.cmake b/host/cmake/Modules/FindLIBERIO.cmake new file mode 100644 index 000000000..dc3a0031b --- /dev/null +++ b/host/cmake/Modules/FindLIBERIO.cmake @@ -0,0 +1,34 @@ +# +# Copyright 2017 Ettus Research +# +# SPDX-License-Identifier: GPL-3.0+ +# +# - Find liberio +# Find the liberio includes and client library +# This module defines +# LIBERIO_INCLUDE_DIR, where to find liberio/dma.h +# LIBERIO_LIBRARIES, the libraries needed by a liberio client. +# LIBERIO_FOUND, If false, do not try to use liberio. +# also defined, but not for general use are +# LIBERIO_LIBRARY, where to find the liberio library. + +FIND_PACKAGE(PkgConfig) +PKG_CHECK_MODULES(PC_LIBERIO QUIET liberio >= 0.3) + +FIND_PATH(LIBERIO_INCLUDE_DIR liberio/liberio.h + HINTS $ENV{LIBERIO_DIR}/include ${PC_LIBERIO_INCLUDE_DIR} + PATH_SUFFIXES liberio +) + +FIND_LIBRARY(LIBERIO_LIBRARY + NAMES erio liberio + HINTS $ENV{LIBERIO_DIR}/lib ${PC_LIBERIO_LIBDIR} ${PC_LIBERIO_LIBRARY_DIRS} +) + +include(FindPackageHandleStandardArgs) +FIND_PACKAGE_HANDLE_STANDARD_ARGS(LIBERIO DEFAULT_MSG LIBERIO_LIBRARY LIBERIO_INCLUDE_DIR) +MARK_AS_ADVANCED(LIBERIO_INCLUDE_DIR LIBERIO_LIBRARY) + +set(LIBERIO_LIBRARIES ${LIBERIO_LIBRARY}) +set(LIBERIO_INCLUDE_DIRS ${LIBERIO_INCLUDE_DIR}) + diff --git a/host/include/config.h.in b/host/include/config.h.in index 0e8982488..19fcf6b22 100644 --- a/host/include/config.h.in +++ b/host/include/config.h.in @@ -23,6 +23,7 @@ #cmakedefine UHD_VERSION_ABI ${UHD_VERSION_ABI} #cmakedefine UHD_VERSION_PATCH ${UHD_VERSION_PATCH} #cmakedefine ENABLE_USB +#cmakedefine ENABLE_LIBERIO #ifndef UHD_VERSION #cmakedefine UHD_VERSION @UHD_VERSION_ADDED@ #endif diff --git a/host/lib/CMakeLists.txt b/host/lib/CMakeLists.txt index fce1021c1..9e7b3042a 100644 --- a/host/lib/CMakeLists.txt +++ b/host/lib/CMakeLists.txt @@ -71,6 +71,7 @@ MESSAGE(STATUS "") # Dependencies FIND_PACKAGE(USB1) FIND_PACKAGE(GPSD) +FIND_PACKAGE(LIBERIO) LIBUHD_REGISTER_COMPONENT("USB" ENABLE_USB ON "ENABLE_LIBUHD;LIBUSB_FOUND" OFF OFF) LIBUHD_REGISTER_COMPONENT("GPSD" ENABLE_GPSD OFF "ENABLE_LIBUHD;ENABLE_GPSD;LIBGPS_FOUND" OFF OFF) # Devices @@ -82,6 +83,7 @@ LIBUHD_REGISTER_COMPONENT("USRP1" ENABLE_USRP1 ON "ENABLE_LIBUHD;ENABLE_USB" OFF LIBUHD_REGISTER_COMPONENT("USRP2" ENABLE_USRP2 ON "ENABLE_LIBUHD" OFF OFF) LIBUHD_REGISTER_COMPONENT("X300" ENABLE_X300 ON "ENABLE_LIBUHD" OFF OFF) LIBUHD_REGISTER_COMPONENT("N230" ENABLE_N230 ON "ENABLE_LIBUHD" OFF OFF) +LIBUHD_REGISTER_COMPONENT("LIBERIO" ENABLE_LIBERIO ON "ENABLE_LIBUHD;LIBERIO_FOUND" OFF OFF) LIBUHD_REGISTER_COMPONENT("OctoClock" ENABLE_OCTOCLOCK ON "ENABLE_LIBUHD" OFF OFF) ######################################################################## diff --git a/host/lib/transport/CMakeLists.txt b/host/lib/transport/CMakeLists.txt index a6d84cc4a..c8fd16ef3 100644 --- a/host/lib/transport/CMakeLists.txt +++ b/host/lib/transport/CMakeLists.txt @@ -138,6 +138,16 @@ IF(ENABLE_X300) ) ENDIF(ENABLE_X300) +IF(ENABLE_LIBERIO) + MESSAGE(STATUS "") + MESSAGE(STATUS "liberio support enabled.") + INCLUDE_DIRECTORIES(${LIBERIO_INCLUDE_DIRS}) + LIBUHD_APPEND_LIBS(${LIBERIO_LIBRARIES}) + LIBUHD_APPEND_SOURCES( + ${CMAKE_CURRENT_SOURCE_DIR}/liberio_zero_copy.cpp + ) +ENDIF(ENABLE_LIBERIO) + # Verbose Debug output for send/recv SET( UHD_TXRX_DEBUG_PRINTS OFF CACHE BOOL "Use verbose debug output for send/recv" ) OPTION( UHD_TXRX_DEBUG_PRINTS "Use verbose debug output for send/recv" "" ) diff --git a/host/lib/transport/liberio_zero_copy.cpp b/host/lib/transport/liberio_zero_copy.cpp new file mode 100644 index 000000000..666872738 --- /dev/null +++ b/host/lib/transport/liberio_zero_copy.cpp @@ -0,0 +1,258 @@ +// +// Copyright 2017 Ettus Research +// +// SPDX-License-Identifier: GPL-3.0+ +// + +#include "liberio_zero_copy.hpp" +#include <uhd/config.hpp> +#include <uhd/utils/static.hpp> +#include <uhd/utils/log.hpp> +#include <liberio/liberio.h> +#include <boost/make_shared.hpp> +#include <sys/syslog.h> + +namespace uhd { namespace transport { + +static const uint64_t USEC = 1000000; + +static void liberio_log_cb(int severity, const char *msg, void *) +{ + switch (severity) { + case LOG_WARNING: + UHD_LOG_WARNING("LIBERIO", msg); + return; + case LOG_NOTICE: + case LOG_INFO: + UHD_LOG_INFO("LIBERIO", msg); + return; + default: + UHD_LOG_INFO("LIBERIO", msg); + }; +} + +class liberio_context_holder { +public: + liberio_context_holder(void) + { + _ctx = liberio_ctx_new(); + liberio_ctx_register_logger(_ctx, &liberio_log_cb, nullptr); + } + + ~liberio_context_holder(void) { liberio_ctx_put(_ctx); } + + liberio_ctx* get(void) + { + liberio_ctx_get(_ctx); + return _ctx; + } +private: + liberio_ctx *_ctx; +}; + +UHD_SINGLETON_FCN(liberio_context_holder, get_liberio_context_holder); + +class liberio_zero_copy_msb : public virtual managed_send_buffer { +public: + liberio_zero_copy_msb(liberio_chan *chan) : _chan(chan), _buf(nullptr) {} + ~liberio_zero_copy_msb(void) + { + liberio_chan_put(_chan); + } + + void release(void) + { + if (_buf) { + liberio_buf_set_payload(_buf, 0, _length); + liberio_chan_buf_enqueue(_chan, _buf); + } + } + + sptr get_new(int timeout, size_t &index) + { + _buf = liberio_chan_buf_dequeue(_chan, timeout * USEC); + if (!_buf) + return sptr(); + + index++; + + return make(this, liberio_buf_get_mem(_buf, 0), + liberio_buf_get_len(_buf, 0)); + } + +private: + liberio_chan *_chan; + liberio_buf *_buf; +}; + +class liberio_zero_copy_mrb : public virtual managed_recv_buffer { +public: + liberio_zero_copy_mrb(liberio_chan *chan) : _chan(chan), _buf(nullptr) {} + ~liberio_zero_copy_mrb(void) + { + liberio_chan_put(_chan); + } + + void release(void) + { + if (_buf) + liberio_chan_buf_enqueue(_chan, _buf); + } + + sptr get_new(int timeout, size_t &index) + { + _buf = liberio_chan_buf_dequeue(_chan, timeout * USEC); + if (!_buf) + return sptr(); + + index++; + + return make(this, liberio_buf_get_mem(_buf, 0), + liberio_buf_get_payload(_buf, 0)); + } + +private: + liberio_chan *_chan; + liberio_buf *_buf; +}; + +class liberio_zero_copy_impl : public liberio_zero_copy { +public: + + liberio_zero_copy_impl(const std::string &tx_path, + const std::string &rx_path, + const zero_copy_xport_params& xport_params) + : _tx_buf_size(xport_params.send_frame_size), + _rx_buf_size(xport_params.recv_frame_size), + _next_recv_buff_index(0), + _next_send_buff_index(0) + { + UHD_ASSERT_THROW(xport_params.recv_frame_size > 0); + UHD_ASSERT_THROW(xport_params.send_frame_size > 0); + UHD_ASSERT_THROW(xport_params.num_send_frames > 0); + UHD_ASSERT_THROW(xport_params.num_recv_frames > 0); + + liberio_ctx *ctx = get_liberio_context_holder().get(); + + /* we hold a reference, that we'd drop immediately after, + * so no requirement to get another one here ... + */ + _tx_chan = liberio_ctx_alloc_chan(ctx, tx_path.c_str(), TX, + USRP_MEMORY_MMAP); + + UHD_ASSERT_THROW(_tx_chan); + liberio_chan_stop_streaming(_tx_chan); + liberio_chan_request_buffers(_tx_chan, 0); + liberio_chan_set_fixed_size(_tx_chan, 0, + xport_params.send_frame_size); + UHD_ASSERT_THROW( + !liberio_chan_request_buffers( + _tx_chan, xport_params.num_send_frames + ) + ); + _num_send_bufs = liberio_chan_get_num_bufs(_tx_chan); + + for (size_t i = 0; i < xport_params.num_send_frames; i++) { + liberio_chan_get(_tx_chan); + _msb_pool.push_back( + boost::make_shared<liberio_zero_copy_msb>(_tx_chan)); + } + + /* we hold a reference, that we'd drop immediately after, + * so no requirement to get another one here ... + */ + _rx_chan = liberio_ctx_alloc_chan(ctx, rx_path.c_str(), + RX, USRP_MEMORY_MMAP); + UHD_ASSERT_THROW(_rx_chan); + + /* done with the local reference, the channel keeps its own */ + liberio_ctx_put(ctx); + + /* stop the channel, free the buffers, set the size, allocate */ + liberio_chan_stop_streaming(_rx_chan); + liberio_chan_request_buffers(_rx_chan, 0); + liberio_chan_set_fixed_size(_rx_chan, 0, + xport_params.recv_frame_size); + UHD_ASSERT_THROW(!liberio_chan_request_buffers( + _rx_chan, xport_params.num_recv_frames)); + _num_recv_bufs = liberio_chan_get_num_bufs(_rx_chan); + + for (size_t i = 0; i < xport_params.num_recv_frames; i++) { + liberio_chan_get(_rx_chan); + _mrb_pool.push_back( + boost::make_shared<liberio_zero_copy_mrb>(_rx_chan)); + } + + UHD_ASSERT_THROW(!liberio_chan_enqueue_all(_rx_chan)); + + liberio_chan_start_streaming(_rx_chan); + liberio_chan_start_streaming(_tx_chan); + } + + ~liberio_zero_copy_impl(void) + { + liberio_chan_put(_tx_chan); + liberio_chan_put(_rx_chan); + } + + managed_recv_buffer::sptr get_recv_buff(double timeout = 0.1) + { + if (_next_recv_buff_index == _num_recv_bufs) + _next_recv_buff_index = 0; + return _mrb_pool[_next_recv_buff_index]->get_new( + USEC * timeout, _next_recv_buff_index); + } + + size_t get_num_recv_frames(void) const + { + return liberio_chan_get_num_bufs(_rx_chan); + } + + size_t get_recv_frame_size(void) const + { + return _rx_buf_size; + } + + managed_send_buffer::sptr get_send_buff(double timeout = 0.1) + { + if (_next_send_buff_index == _num_send_bufs) + _next_send_buff_index = 0; + return _msb_pool[_next_send_buff_index]->get_new( + timeout, _next_send_buff_index); + } + + size_t get_num_send_frames(void) const + { + return liberio_chan_get_num_bufs(_tx_chan); + } + + size_t get_send_frame_size(void) const + { + return _tx_buf_size; + } + +private: + liberio_chan *_tx_chan; + const size_t _tx_buf_size; + size_t _num_send_bufs; + liberio_chan *_rx_chan; + const size_t _rx_buf_size; + size_t _num_recv_bufs; + + std::vector<boost::shared_ptr<liberio_zero_copy_mrb> > _mrb_pool; + size_t _next_recv_buff_index; + std::vector<boost::shared_ptr<liberio_zero_copy_msb> > _msb_pool; + size_t _next_send_buff_index; +}; + +liberio_zero_copy::sptr liberio_zero_copy::make( + const std::string &tx_path, + const std::string &rx_path, + const zero_copy_xport_params &default_buff_args) +{ + return liberio_zero_copy::sptr( + new liberio_zero_copy_impl(tx_path, rx_path, default_buff_args) + ); +} + +}} diff --git a/host/lib/transport/liberio_zero_copy.hpp b/host/lib/transport/liberio_zero_copy.hpp new file mode 100644 index 000000000..bf23b1321 --- /dev/null +++ b/host/lib/transport/liberio_zero_copy.hpp @@ -0,0 +1,36 @@ +// +// Copyright 2017 Ettus Research +// +// SPDX-License-Identifier: GPL-3.0+ +// + +#ifndef LIBERIO_HPP +#define LIBERIO_HPP + +#include <string> +#include <vector> + +#include <uhd/config.hpp> +#include <uhd/transport/zero_copy.hpp> +#include <uhd/types/device_addr.hpp> +#include <boost/shared_ptr.hpp> + +namespace uhd { namespace transport { + +/*! + * A zero copy transport interface to the liberio DMA library. + */ +class liberio_zero_copy : public virtual zero_copy_if { +public: + typedef boost::shared_ptr<liberio_zero_copy> sptr; + + static sptr make( + const std::string &tx_path, + const std::string &rx_path, + const zero_copy_xport_params &default_buff_args + ); +}; + +}} + +#endif /* LIBERIO_HPP */ |