From patchwork Fri Mar 31 19:35:03 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jerin Jacob X-Patchwork-Id: 23078 X-Patchwork-Delegate: jerinj@marvell.com Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [IPv6:::1]) by dpdk.org (Postfix) with ESMTP id 039DC2BF2; Fri, 31 Mar 2017 21:41:56 +0200 (CEST) Received: from NAM02-BL2-obe.outbound.protection.outlook.com (mail-bl2nam02on0079.outbound.protection.outlook.com [104.47.38.79]) by dpdk.org (Postfix) with ESMTP id 844CE5424 for ; Fri, 31 Mar 2017 21:38:04 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=CAVIUMNETWORKS.onmicrosoft.com; s=selector1-cavium-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version; bh=OJtm91uYTY/6wJRh6GoLvsQ4NA2j+lfP7jLjYqQtXjQ=; b=XPlhD45u7o7YiYNY8Pn7UAPLBOphRhWrHkji9anEjXP57XHD8yzOGO3G3lEsN96WlqRoPlz0U6w1Gb9NGZyAZxf2MntBbo2z3EYRf1GYQDkfWUmwHlOFvpCEgKqXQ+ulIuloXV5xKfvqdMXjdxLCmMS35VKVLgEjVYSDpad0rc0= Authentication-Results: dpdk.org; 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BSD LICENSE + Copyright(c) 2017 Cavium networks. 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. + +Event Device Drivers +===================== + + +.. toctree:: + :maxdepth: 2 + :numbered: + + octeontx diff --git a/doc/guides/eventdevs/octeontx.rst b/doc/guides/eventdevs/octeontx.rst new file mode 100644 index 0000000..6d88192 --- /dev/null +++ b/doc/guides/eventdevs/octeontx.rst @@ -0,0 +1,151 @@ +.. 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. + +OCTEONTX SSOVF Eventdev Driver +============================== + +The OCTEONTX SSOVF PMD (**librte_pmd_octeontx_ssovf**) provides poll mode +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 +`_. + +Features +-------- + +Features of the OCTEONTX SSOVF PMD are: + +- 64 Event queues +- 32 Event ports +- HW event scheduler +- Supports 1M flows per event queue +- Flow based event pipelining +- Flow pinning support in flow based event pipelining +- Queue based event pipelining +- Supports ATOMIC,ORDERED,PARALLEL schedule types per flow +- Event scheduling QoS based on event queue priority +- Open system with configurable amount of outstanding events +- HW accelerated dequeue timeout support to enable power management +- SR-IOV VF + +Supported OCTEONTX SoCs +----------------------- +- CN83xx + +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 `_ + along with build, install and dpdk usage instructions. + +2. **ARM64 Tool Chain** + + For example, the *aarch64* Linaro Toolchain, which can be obtained from + `here `_. + +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 ``_. + + 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 `_. + +- Follow the DPDK :ref:`Getting Started Guide for Linux ` 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_OCTEONTX_SSOVF`` (default ``y``) + + 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 +~~~~~~~~~~~~~~~~~~ + +To compile the OCTEONTX SSOVF PMD for Linux arm64 gcc target, run the +following “make” command: + +.. code-block:: console + + cd + make config T=arm64-thunderx-linuxapp-gcc install + + +Initialization +-------------- + +The octeontx eventdev is exposed as a vdev device which consists of a set +of SSO group and work-slot PCIe VF devices. On EAL initialization, +SSO PCIe VF devices will be probed and then the vdev device can be created +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 + +* Using ``--vdev="event_octeontx"`` in the EAL options, which will call + rte_eal_vdev_init() internally + +Example: + +.. code-block:: console + + ./your_eventdev_application --vdev="event_octeontx" + +Limitations +----------- + +Burst mode support +~~~~~~~~~~~~~~~~~~ + +Burst mode is not supported. Dequeue and Enqueue functions accepts only single +event at a time. + diff --git a/doc/guides/index.rst b/doc/guides/index.rst index 82b00e9..63716b0 100644 --- a/doc/guides/index.rst +++ b/doc/guides/index.rst @@ -43,6 +43,7 @@ DPDK documentation testpmd_app_ug/index nics/index cryptodevs/index + eventdevs/index xen/index contributing/index rel_notes/index