1. NXP DPAA2 CMDIF Driver

The DPAA2 CMDIF is an implementation of the rawdev API, that provides communication between the GPP and AIOP (Firmware). This is achieved via using the DPCI devices exposed by MC for GPP <–> AIOP interaction.

More information can be found at NXP Official Website.

1.1. Features

The DPAA2 CMDIF implements following features in the rawdev API;

  • Getting the object ID of the device (DPCI) using attributes
  • I/O to and from the AIOP device using DPCI

1.2. Supported DPAA2 SoCs

  • LS2084A/LS2044A
  • LS2088A/LS2048A
  • LS1088A/LS1048A

1.3. Prerequisites

See NXP QorIQ DPAA2 Board Support Package for setup information

Currently supported by DPDK:

  • NXP SDK 19.09+.
  • MC Firmware version 10.18.0 and higher.
  • Supported architectures: arm64 LE.
  • Follow the DPDK Getting Started Guide for Linux to setup the basic DPDK environment.

Note

Some part of fslmc bus code (mc flib - object library) routines are dual licensed (BSD & GPLv2).

1.4. Pre-Installation Configuration

1.4.1. Config File Options

The following options can be modified in the config file.

  • CONFIG_RTE_LIBRTE_PMD_DPAA2_CMDIF_RAWDEV (default y)

    Toggle compilation of the lrte_pmd_dpaa2_cmdif driver.

1.5. Enabling logs

For enabling logs, use the following EAL parameter:

./your_cmdif_application <EAL args> --log-level=pmd.raw.dpaa2.cmdif,<level>

Using pmd.raw.dpaa2.cmdif as log matching criteria, all Event PMD logs can be enabled which are lower than logging level.

1.5.1. Driver Compilation

To compile the DPAA2 CMDIF PMD for Linux arm64 gcc target, run the following make command:

cd <DPDK-source-directory>
make config T=arm64-dpaa-linux-gcc install

1.6. Initialization

The DPAA2 CMDIF is exposed as a vdev device which consists of dpci devices. On EAL initialization, dpci devices will be probed and then vdev device can be created from the application code by

  • Invoking rte_vdev_init("dpaa2_dpci") from the application
  • Using --vdev="dpaa2_dpci" in the EAL options, which will call rte_vdev_init() internally

Example:

./your_cmdif_application <EAL args> --vdev="dpaa2_dpci"

1.6.1. Platform Requirement

DPAA2 drivers for DPDK can only work on NXP SoCs as listed in the Supported DPAA2 SoCs.