From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id D94C1A04B5; Thu, 29 Oct 2020 15:56:35 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 7110ECF4D; Thu, 29 Oct 2020 15:56:14 +0100 (CET) Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by dpdk.org (Postfix) with ESMTP id 7B4E2CE77 for ; Thu, 29 Oct 2020 15:56:09 +0100 (CET) IronPort-SDR: dPCEdneu8deQRdSnmOxW/DGJmPG4gMlA1VBhun4E3CleC2cYfEbYJzlu7Cz7X/kM1b6KFEKQZN f+iTWvPJSRDA== X-IronPort-AV: E=McAfee;i="6000,8403,9788"; a="155414553" X-IronPort-AV: E=Sophos;i="5.77,430,1596524400"; d="scan'208";a="155414553" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Oct 2020 07:56:06 -0700 IronPort-SDR: zTX6/Md5XxAnFqW3T+jNTjTdGXGhVLZAWyuC6A8WEYvvaypq2MOFcqA/eJk6+YEmzzTDGksyLb ewIaWNA4aWKQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.77,430,1596524400"; d="scan'208";a="526760373" Received: from txasoft-yocto.an.intel.com ([10.123.72.192]) by fmsmga005.fm.intel.com with ESMTP; 29 Oct 2020 07:56:06 -0700 From: Timothy McDaniel To: Thomas Monjalon , Bruce Richardson , Ray Kinsella , Neil Horman Cc: dev@dpdk.org, erik.g.carrillo@intel.com, gage.eads@intel.com, harry.van.haaren@intel.com, jerinj@marvell.com Date: Thu, 29 Oct 2020 09:57:32 -0500 Message-Id: <1603983474-16354-2-git-send-email-timothy.mcdaniel@intel.com> X-Mailer: git-send-email 1.7.10 In-Reply-To: <1603983474-16354-1-git-send-email-timothy.mcdaniel@intel.com> References: <20200612212434.6852-2-timothy.mcdaniel@intel.com> <1603983474-16354-1-git-send-email-timothy.mcdaniel@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Subject: [dpdk-dev] =?utf-8?q?=5BPATCH_v7_01/23=5D_event/dlb=3A_add_docume?= =?utf-8?q?ntation_and_meson_infrastructure?= X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Increased RTE_EVENT_MAX_QUEUES_PER_DEV config option from 64 to 255. Note that config/rte_config.h contains several configuration switches, providing for fine control of the PMD's runtime behaviour. The meson infrastructure is expanded as additional files are added to this patchset. Signed-off-by: Timothy McDaniel --- MAINTAINERS | 6 +++++- config/rte_config.h | 6 ++++++ doc/guides/eventdevs/dlb.rst | 36 ++++++++++++++++++++++++++++++++++++ doc/guides/eventdevs/index.rst | 1 + drivers/event/dlb/meson.build | 13 +++++++++++++ drivers/event/dlb/version.map | 3 +++ drivers/event/meson.build | 2 +- 7 files changed, 65 insertions(+), 2 deletions(-) create mode 100644 doc/guides/eventdevs/dlb.rst create mode 100644 drivers/event/dlb/meson.build create mode 100644 drivers/event/dlb/version.map diff --git a/MAINTAINERS b/MAINTAINERS index a3d1927..b904132 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1162,6 +1162,11 @@ Cavium OCTEON TX timvf M: Pavan Nikhilesh F: drivers/event/octeontx/timvf_* +Intel DLB +M: Timothy McDaniel +F: drivers/event/dlb/ +F: doc/guides/eventdevs/dlb.rst + Marvell OCTEON TX2 M: Pavan Nikhilesh M: Jerin Jacob @@ -1198,7 +1203,6 @@ M: Peter Mccarthy F: drivers/event/opdl/ F: doc/guides/eventdevs/opdl.rst - Rawdev Drivers -------------- diff --git a/config/rte_config.h b/config/rte_config.h index b78c6aa..9ebe4cc 100644 --- a/config/rte_config.h +++ b/config/rte_config.h @@ -135,4 +135,10 @@ /* QEDE PMD defines */ #define RTE_LIBRTE_QEDE_FW "" +/* DLB PMD defines */ +#define RTE_LIBRTE_PMD_DLB_POLL_INTERVAL 1000 +#define RTE_LIBRTE_PMD_DLB_UMWAIT_CTL_STATE 0 +#undef RTE_LIBRTE_PMD_DLB_QUELL_STATS +#define RTE_LIBRTE_PMD_DLB_SW_CREDIT_QUANTA 32 + #endif /* _RTE_CONFIG_H_ */ diff --git a/doc/guides/eventdevs/dlb.rst b/doc/guides/eventdevs/dlb.rst new file mode 100644 index 0000000..92341c0 --- /dev/null +++ b/doc/guides/eventdevs/dlb.rst @@ -0,0 +1,36 @@ +.. SPDX-License-Identifier: BSD-3-Clause + Copyright(c) 2020 Intel Corporation. + +Driver for the Intel® Dynamic Load Balancer (DLB) +================================================== + +The DPDK dlb poll mode driver supports the Intel® Dynamic Load Balancer. + +Prerequisites +------------- + +Follow the DPDK :ref:`Getting Started Guide for Linux ` to setup +the basic DPDK environment. + +Configuration +------------- + +The DLB PF PMD is a user-space PMD that uses VFIO to gain direct +device access. To use this operation mode, the PCIe PF device must be bound +to a DPDK-compatible VFIO driver, such as vfio-pci. + +Eventdev API Notes +------------------ + +The DLB provides the functions of a DPDK event device; specifically, it +supports atomic, ordered, and parallel scheduling events from queues to ports. +However, the DLB hardware is not a perfect match to the eventdev API. Some DLB +features are abstracted by the PMD (e.g. directed ports), some are only +accessible as vdev command-line parameters, and certain eventdev features are +not supported (e.g. the event flow ID is not maintained during scheduling). + +In general the dlb PMD is designed for ease-of-use and does not require a +detailed understanding of the hardware, but these details are important when +writing high-performance code. This section describes the places where the +eventdev API and DLB misalign. + diff --git a/doc/guides/eventdevs/index.rst b/doc/guides/eventdevs/index.rst index bb66a5e..4b915bf 100644 --- a/doc/guides/eventdevs/index.rst +++ b/doc/guides/eventdevs/index.rst @@ -11,6 +11,7 @@ application through the eventdev API. :maxdepth: 2 :numbered: + dlb dpaa dpaa2 dsw diff --git a/drivers/event/dlb/meson.build b/drivers/event/dlb/meson.build new file mode 100644 index 0000000..5324043 --- /dev/null +++ b/drivers/event/dlb/meson.build @@ -0,0 +1,13 @@ +# SPDX-License-Identifier: BSD-3-Clause +# Copyright(c) 2019-2020 Intel Corporation + +if not is_linux or not dpdk_conf.has('RTE_ARCH_X86_64') + build = false + reason = 'only supported on ARCH_X86_64 Linux' + subdir_done() +endif + +sources = files( +) + +deps += ['mbuf', 'mempool', 'ring', 'pci', 'bus_pci'] diff --git a/drivers/event/dlb/version.map b/drivers/event/dlb/version.map new file mode 100644 index 0000000..4a76d1d --- /dev/null +++ b/drivers/event/dlb/version.map @@ -0,0 +1,3 @@ +DPDK_21 { + local: *; +}; diff --git a/drivers/event/meson.build b/drivers/event/meson.build index a7dac99..6601e62 100644 --- a/drivers/event/meson.build +++ b/drivers/event/meson.build @@ -5,7 +5,7 @@ if is_windows subdir_done() endif -drivers = ['dpaa', 'dpaa2', 'octeontx2', 'opdl', 'skeleton', 'sw', 'dsw'] +drivers = ['dlb', 'dpaa', 'dpaa2', 'octeontx2', 'opdl', 'skeleton', 'sw', 'dsw'] if not (toolchain == 'gcc' and cc.version().version_compare('<4.8.6') and dpdk_conf.has('RTE_ARCH_ARM64')) drivers += 'octeontx' -- 2.6.4