diff options
Diffstat (limited to 'doc/guides/bbdevs')
-rw-r--r-- | doc/guides/bbdevs/index.rst | 12 | ||||
-rw-r--r-- | doc/guides/bbdevs/null.rst | 49 | ||||
-rw-r--r-- | doc/guides/bbdevs/turbo_sw.rst | 147 |
3 files changed, 208 insertions, 0 deletions
diff --git a/doc/guides/bbdevs/index.rst b/doc/guides/bbdevs/index.rst new file mode 100644 index 00000000..93276edb --- /dev/null +++ b/doc/guides/bbdevs/index.rst @@ -0,0 +1,12 @@ +.. SPDX-License-Identifier: BSD-3-Clause + Copyright(c) 2017 Intel Corporation + +Baseband Device Drivers +======================= + +.. toctree:: + :maxdepth: 2 + :numbered: + + null + turbo_sw diff --git a/doc/guides/bbdevs/null.rst b/doc/guides/bbdevs/null.rst new file mode 100644 index 00000000..9baf2a99 --- /dev/null +++ b/doc/guides/bbdevs/null.rst @@ -0,0 +1,49 @@ +.. SPDX-License-Identifier: BSD-3-Clause + Copyright(c) 2017 Intel Corporation + +BBDEV null Poll Mode Driver +============================ + +The (**bbdev_null**) is a bbdev poll mode driver which provides a minimal +implementation of a software bbdev device. As a null device it does not modify +the data in the mbuf on which the bbdev operation is to operate and it only +works for operation type ``RTE_BBDEV_OP_NONE``. + +When a burst of mbufs is submitted to a *bbdev null PMD* for processing then +each mbuf in the burst will be enqueued in an internal buffer ring to be +collected on a dequeue call. + + +Limitations +----------- + +* In-place operations for Turbo encode and decode are not supported + +Installation +------------ + +The *bbdev null PMD* is enabled and built by default in both the Linux and +FreeBSD builds. + +Initialization +-------------- + +To use the PMD in an application, user must: + +- Call ``rte_vdev_init("bbdev_null")`` within the application. + +- Use ``--vdev="bbdev_null"`` in the EAL options, which will call ``rte_vdev_init()`` internally. + +The following parameters (all optional) can be provided in the previous two calls: + +* ``socket_id``: Specify the socket where the memory for the device is going to be allocated + (by default, *socket_id* will be the socket where the core that is creating the PMD is running on). + +* ``max_nb_queues``: Specify the maximum number of queues in the device (default is ``RTE_MAX_LCORE``). + +Example: +~~~~~~~~ + +.. code-block:: console + + ./test-bbdev.py -e="--vdev=bbdev_null,socket_id=0,max_nb_queues=8" diff --git a/doc/guides/bbdevs/turbo_sw.rst b/doc/guides/bbdevs/turbo_sw.rst new file mode 100644 index 00000000..b3fed163 --- /dev/null +++ b/doc/guides/bbdevs/turbo_sw.rst @@ -0,0 +1,147 @@ +.. SPDX-License-Identifier: BSD-3-Clause + Copyright(c) 2017 Intel Corporation + +SW Turbo Poll Mode Driver +========================= + +The SW Turbo PMD (**turbo_sw**) provides a poll mode bbdev driver that utilizes +Intel optimized libraries for LTE Layer 1 workloads acceleration. This PMD +supports the functions: Turbo FEC, Rate Matching and CRC functions. + +Features +-------- + +SW Turbo PMD has support for the following capabilities: + +For the encode operation: + +* ``RTE_BBDEV_TURBO_CRC_24A_ATTACH`` +* ``RTE_BBDEV_TURBO_CRC_24B_ATTACH`` +* ``RTE_BBDEV_TURBO_RATE_MATCH`` +* ``RTE_BBDEV_TURBO_RV_INDEX_BYPASS`` + +For the decode operation: + +* ``RTE_BBDEV_TURBO_SUBBLOCK_DEINTERLEAVE`` +* ``RTE_BBDEV_TURBO_CRC_TYPE_24B`` +* ``RTE_BBDEV_TURBO_POS_LLR_1_BIT_IN`` +* ``RTE_BBDEV_TURBO_NEG_LLR_1_BIT_IN`` + + +Limitations +----------- + +* In-place operations for Turbo encode and decode are not supported + +Installation +------------ + +FlexRAN SDK Download +~~~~~~~~~~~~~~~~~~~~ + +To build DPDK with the *turbo_sw* PMD the user is required to download +the export controlled ``FlexRAN SDK`` Libraries. An account at Intel Resource +Design Center needs to be registered from +`<https://www.intel.com/content/www/us/en/design/resource-design-center.html>`_. + +Once registered, the user needs to log in, and look for +*Intel SWA_SW_FlexRAN_Release_Package R1_3_0* and click for download. Or use +this direct download link `<https://cdrd.intel.com/v1/dl/getContent/575367>`_. + +After download is complete, the user needs to unpack and compile on their +system before building DPDK. + +FlexRAN SDK Installation +~~~~~~~~~~~~~~~~~~~~~~~~ + +The following are pre-requisites for building FlexRAN SDK Libraries: + (a) An AVX2 supporting machine + (b) Windriver TS 2 or CentOS 7 operating systems + (c) Intel ICC compiler installed + +The following instructions should be followed in this exact order: + +#. Set the environment variables: + + .. code-block:: console + + source <path-to-icc-compiler-install-folder>/linux/bin/compilervars.sh intel64 -platform linux + + +#. Extract the ``FlexRAN-1.3.0.tar.gz.zip`` package, then run the SDK extractor + script and accept the license: + + .. code-block:: console + + cd <path-to-workspace>/FlexRAN-1.3.0/ + ./SDK-R1.3.0.sh + +#. To allow ``FlexRAN SDK R1.3.0`` to work with bbdev properly, the following + hotfix is required. Change the return of function ``rate_matching_turbo_lte_avx2()`` + located in file + ``<path-to-workspace>/FlexRAN-1.3.0/SDK-R1.3.0/sdk/source/phy/lib_rate_matching/phy_rate_match_avx2.cpp`` + to return 0 instead of 1. + + .. code-block:: c + + - return 1; + + return 0; + +#. Generate makefiles based on system configuration: + + .. code-block:: console + + cd <path-to-workspace>/FlexRAN-1.3.0/SDK-R1.3.0/sdk/ + ./create-makefiles-linux.sh + +#. A build folder is generated in this form ``build-<ISA>-<CC>``, enter that + folder and install: + + .. code-block:: console + + cd build-avx2-icc/ + make install + + +Initialization +-------------- + +In order to enable this virtual bbdev PMD, the user must: + +* Build the ``FLEXRAN SDK`` libraries (explained in Installation section). + +* Export the environmental variables ``FLEXRAN_SDK`` to the path where the + FlexRAN SDK libraries were installed. And ``DIR_WIRELESS_SDK`` to the path + where the libraries were extracted. + +Example: + +.. code-block:: console + + export FLEXRAN_SDK=<path-to-workspace>/FlexRAN-1.3.0/SDK-R1.3.0/sdk/build-avx2-icc/install + export DIR_WIRELESS_SDK=<path-to-workspace>/FlexRAN-1.3.0/SDK-R1.3.0/sdk/ + + +* Set ``CONFIG_RTE_LIBRTE_PMD_BBDEV_TURBO_SW=y`` in DPDK common configuration + file ``config/common_base``. + +To use the PMD in an application, user must: + +- Call ``rte_vdev_init("turbo_sw")`` within the application. + +- Use ``--vdev="turbo_sw"`` in the EAL options, which will call ``rte_vdev_init()`` internally. + +The following parameters (all optional) can be provided in the previous two calls: + +* ``socket_id``: Specify the socket where the memory for the device is going to be allocated + (by default, *socket_id* will be the socket where the core that is creating the PMD is running on). + +* ``max_nb_queues``: Specify the maximum number of queues in the device (default is ``RTE_MAX_LCORE``). + +Example: +~~~~~~~~ + +.. code-block:: console + + ./test-bbdev.py -e="--vdev=turbo_sw,socket_id=0,max_nb_queues=8" \ + -c validation -v ./test_vectors/bbdev_vector_t?_default.data |