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.. SPDX-License-Identifier: BSD-3-Clause
Copyright 2017 NXP
NXP DPAA Eventdev Driver
=========================
The dpaa eventdev is an implementation of the eventdev API, that provides a
wide range of the eventdev features. The eventdev relies on a dpaa based
platform to perform event scheduling.
More information can be found at `NXP Official Website
<http://www.nxp.com/products/microcontrollers-and-processors/arm-processors/qoriq-arm-processors:QORIQ-ARM>`_.
Features
--------
The DPAA EVENTDEV implements many features in the eventdev API;
- Hardware based event scheduler
- 4 event ports
- 4 event queues
- Parallel flows
- Atomic flows
Supported DPAA SoCs
--------------------
- LS1046A/LS1026A
- LS1043A/LS1023A
Prerequisites
-------------
See :doc:`../platform/dpaa` for setup information
Currently supported by DPDK:
- NXP SDK **2.0+** or LSDK **18.09+**
- Supported architectures: **arm64 LE**.
- Follow the DPDK :ref:`Getting Started Guide for Linux <linux_gsg>` to setup the basic DPDK environment.
Pre-Installation Configuration
------------------------------
Config File Options
~~~~~~~~~~~~~~~~~~~
The following options can be modified in the ``config`` file.
Please note that enabling debugging options may affect system performance.
- ``CONFIG_RTE_LIBRTE_PMD_DPAA_EVENTDEV`` (default ``y``)
Toggle compilation of the ``librte_pmd_dpaa_event`` driver.
Driver Compilation
~~~~~~~~~~~~~~~~~~
To compile the DPAA EVENTDEV PMD for Linux arm64 gcc target, run the
following ``make`` command:
.. code-block:: console
cd <DPDK-source-directory>
make config T=arm64-dpaa-linux-gcc install
Initialization
--------------
The dpaa eventdev is exposed as a vdev device which consists of a set of channels
and queues. On EAL initialization, dpaa components will be
probed and then vdev device can be created from the application code by
* Invoking ``rte_vdev_init("event_dpaa1")`` from the application
* Using ``--vdev="event_dpaa1"`` in the EAL options, which will call
rte_vdev_init() internally
Example:
.. code-block:: console
./your_eventdev_application --vdev="event_dpaa1"
* Use dev arg option ``disable_intr=1`` to disable the interrupt mode
Limitations
-----------
1. DPAA eventdev can not work with DPAA PUSH mode queues configured for ethdev.
Please configure export DPAA_NUM_PUSH_QUEUES=0
Platform Requirement
~~~~~~~~~~~~~~~~~~~~
DPAA drivers for DPDK can only work on NXP SoCs as listed in the
``Supported DPAA SoCs``.
Port-core Binding
~~~~~~~~~~~~~~~~~
DPAA EVENTDEV driver requires event port 'x' to be used on core 'x'.
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