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 19.03+.
MC Firmware version 10.14.0 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
(defaulty
)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-dpaa2-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 applicationUsing
--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
.