-.. BSD LICENSE
- Copyright (C) Cavium networks Ltd. 2017.
- All rights reserved.
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
-
- * Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
- * Redistributions in binary form must reproduce the above copyright
- notice, this list of conditions and the following disclaimer in
- the documentation and/or other materials provided with the
- distribution.
- * Neither the name of Cavium networks nor the names of its
- contributors may be used to endorse or promote products derived
- from this software without specific prior written permission.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+.. SPDX-License-Identifier: BSD-3-Clause
+ Copyright(c) 2017 Cavium, Inc
OCTEONTX SSOVF Eventdev Driver
==============================
eventdev driver support for the inbuilt event device found in the **Cavium OCTEONTX**
SoC family as well as their virtual functions (VF) in SR-IOV context.
-More information can be found at `Cavium Networks Official Website
+More information can be found at `Cavium, Inc Official Website
<http://www.cavium.com/OCTEON-TX_ARM_Processors.html>`_.
Features
- Open system with configurable amount of outstanding events
- HW accelerated dequeue timeout support to enable power management
- SR-IOV VF
+- HW managed event timers support through TIMVF, with high precision and
+ time granularity of 1us.
+- Up to 64 event timer adapters.
Supported OCTEONTX SoCs
-----------------------
Prerequisites
-------------
-There are three main pre-perquisites for executing SSOVF PMD on a OCTEONTX
-compatible board:
-
-1. **OCTEONTX Linux kernel PF driver for Network acceleration HW blocks**
-
- The OCTEONTX Linux kernel drivers (including the required PF driver for the
- SSOVF) are available on Github at `octeontx-kmod <https://github.com/caviumnetworks/octeontx-kmod>`_
- along with build, install and dpdk usage instructions.
-
-2. **ARM64 Tool Chain**
-
- For example, the *aarch64* Linaro Toolchain, which can be obtained from
- `here <https://releases.linaro.org/components/toolchain/binaries/4.9-2017.01/aarch64-linux-gnu>`_.
-
-3. **Rootfile system**
-
- Any *aarch64* supporting filesystem can be used. For example,
- Ubuntu 15.10 (Wily) or 16.04 LTS (Xenial) userland which can be obtained
- from `<http://cdimage.ubuntu.com/ubuntu-base/releases/16.04/release/ubuntu-base-16.04.1-base-arm64.tar.gz>`_.
-
- As an alternative method, SSOVF PMD can also be executed using images provided
- as part of SDK from Cavium. The SDK includes all the above prerequisites necessary
- to bring up a OCTEONTX board.
-
- SDK and related information can be obtained from: `Cavium support site <https://support.cavium.com/>`_.
-
-- Follow the DPDK :ref:`Getting Started Guide for Linux <linux_gsg>` to setup the basic DPDK environment.
+See :doc:`../platform/octeontx` for setup information.
Pre-Installation Configuration
------------------------------
Toggle compilation of the ``librte_pmd_octeontx_ssovf`` driver.
-- ``CONFIG_RTE_LIBRTE_PMD_OCTEONTX_SSOVF_DEBUG`` (default ``n``)
-
- Toggle display of generic debugging messages
-
Driver Compilation
~~~~~~~~~~~~~~~~~~
from the application code, or from the EAL command line based on
the number of probed/bound SSO PCIe VF device to DPDK by
-* Invoking ``rte_eal_vdev_init("event_octeontx")`` from the application
+* Invoking ``rte_vdev_init("event_octeontx")`` from the application
* Using ``--vdev="event_octeontx"`` in the EAL options, which will call
- rte_eal_vdev_init() internally
+ rte_vdev_init() internally
Example:
./your_eventdev_application --vdev="event_octeontx"
+
+Selftest
+--------
+
+The functionality of octeontx eventdev can be verified using this option,
+various unit and functional tests are run to verify the sanity.
+The tests are run once the vdev creation is successfully complete.
+
+.. code-block:: console
+
+ --vdev="event_octeontx,self_test=1"
+
+
+Enable TIMvf stats
+------------------
+TIMvf stats can be enabled by using this option, by default the stats are
+disabled.
+
+.. code-block:: console
+
+ --vdev="event_octeontx,timvf_stats=1"
+
+
Limitations
-----------
Burst mode is not supported. Dequeue and Enqueue functions accepts only single
event at a time.
+Rx adapter support
+~~~~~~~~~~~~~~~~~~
+
+When eth_octeontx is used as Rx adapter event schedule type
+``RTE_SCHED_TYPE_PARALLEL`` is not supported.
+
+Event timer adapter support
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+When timvf is used as Event timer adapter the clock source mapping is as
+follows:
+
+.. code-block:: console
+
+ RTE_EVENT_TIMER_ADAPTER_CPU_CLK = TIM_CLK_SRC_SCLK
+ RTE_EVENT_TIMER_ADAPTER_EXT_CLK0 = TIM_CLK_SRC_GPIO
+ RTE_EVENT_TIMER_ADAPTER_EXT_CLK1 = TIM_CLK_SRC_GTI
+ RTE_EVENT_TIMER_ADAPTER_EXT_CLK2 = TIM_CLK_SRC_PTP
+
+When timvf is used as Event timer adapter event schedule type
+``RTE_SCHED_TYPE_PARALLEL`` is not supported.
git.droids-corp.org / dpdk.git / blobdiff