From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-f53.google.com (mail-wm0-f53.google.com [74.125.82.53]) by dpdk.org (Postfix) with ESMTP id 84D771B53 for ; Wed, 31 May 2017 15:18:15 +0200 (CEST) Received: by mail-wm0-f53.google.com with SMTP id e127so19924275wmg.1 for ; Wed, 31 May 2017 06:18:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=6wind-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :in-reply-to:references; bh=pUpLPxT5tI+h1YtThNCcM5il2u3lWzXwPUuy13rub6U=; b=vNhE3XpcEq6+QoWMF0VR51vHEITn9J4loO9f2ZAERM6yvG8syGfH7PYwaRtRE/DrS6 Wu7hnsXjrV5UPbaYhVjyhpeFljugydNzv3M24j/DXm4vSMXQroIQxKXyp6LBzDy8E5sL dKo2UiBtF4OX0Omhy7FdW6wqltTaoHv5z1v6kJAcwGn4jOEI7LHBorW3O2waODAZ9P5f gCKEhb7HusZ0T3xuX7sjaCwO/cxWQXrO3PWfrmV2fkxzJSrittHnq2KblS6hj1gxHVDE 2B7yaJZhI2VWlyyW0ZNCUEN3K5ygwu+vgOLymYVyJFAcU0z5vIUV/tQ0w9j8ZggHL1e9 0+5A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:in-reply-to:references; bh=pUpLPxT5tI+h1YtThNCcM5il2u3lWzXwPUuy13rub6U=; b=tBwNSS43cHlkomwaB6ycleQjvtqDDvoUR5KMYbsdsG1gt9XG2kvk/S+Dhlnogx3QFo o2GxAgIRP8zAkId/IB4Kf/kuo0MiC/YsA9GL3bqUISAMeXmdL7ETutGhfbZ3A4ML2Twk ZDfe/4dfuRnsvlotFBwbPexFw+UxzorDYBA+2GvuE7vIIJGJOJvqgzlXka101kgfJf4y +FK0YJ6yl0GLmI/qVM6bMB3YIEmrpFuTsOuiJGamCGHS2ty6v8ZuLTej6RbipcguIrpQ G5QhgWW+udlxevMWADXedUvJGdKe8JyxungaAsla+pz2u+pnlYRjOTD9nzo2fzh+95CT WSlQ== X-Gm-Message-State: AODbwcDSrdBuxtQOXDs5Y1yogtrZZWj9NcwgdxEzPopVntDn7qANT7Zk 60jIAZYl0Jh0D6Rm7j0= X-Received: by 10.223.167.76 with SMTP id e12mr18140369wrd.177.1496236694899; Wed, 31 May 2017 06:18:14 -0700 (PDT) Received: from bidouze.dev.6wind.com (host.78.145.23.62.rev.coltfrance.com. [62.23.145.78]) by smtp.gmail.com with ESMTPSA id g77sm10045744wmd.19.2017.05.31.06.18.13 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 31 May 2017 06:18:13 -0700 (PDT) From: Gaetan Rivet To: dev@dpdk.org Cc: Jan Blunck , Gaetan Rivet Date: Wed, 31 May 2017 15:17:50 +0200 Message-Id: <1ed679ff10dac583512a74ae55698d40e5654bfe.1496235017.git.gaetan.rivet@6wind.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: References: In-Reply-To: References: Subject: [dpdk-dev] [PATCH v2 05/11] bus: introduce hotplug functionality 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: , X-List-Received-Date: Wed, 31 May 2017 13:18:15 -0000 From: Jan Blunck Signed-off-by: Jan Blunck Signed-off-by: Gaetan Rivet --- lib/librte_eal/common/eal_common_bus.c | 3 +++ lib/librte_eal/common/include/rte_bus.h | 20 ++++++++++++++++++++ 2 files changed, 23 insertions(+) diff --git a/lib/librte_eal/common/eal_common_bus.c b/lib/librte_eal/common/eal_common_bus.c index 632a6e7..4063897 100644 --- a/lib/librte_eal/common/eal_common_bus.c +++ b/lib/librte_eal/common/eal_common_bus.c @@ -51,6 +51,9 @@ rte_bus_register(struct rte_bus *bus) RTE_VERIFY(bus->scan); RTE_VERIFY(bus->probe); + /* Buses supporting hotplug also require unplug */ + RTE_VERIFY(!bus->plug || bus->unplug); + TAILQ_INSERT_TAIL(&rte_bus_list, bus, next); RTE_LOG(DEBUG, EAL, "Registered [%s] bus.\n", bus->name); } diff --git a/lib/librte_eal/common/include/rte_bus.h b/lib/librte_eal/common/include/rte_bus.h index b56018f..3c59fc2 100644 --- a/lib/librte_eal/common/include/rte_bus.h +++ b/lib/librte_eal/common/include/rte_bus.h @@ -88,6 +88,24 @@ typedef struct rte_device * (*rte_bus_find_device_t)(rte_dev_match_t match, const void *data); /** + * Implementation specific probe function which is responsible for linking + * devices on that bus with applicable drivers. + * The plugged device might already have been used previously by the bus, + * in which case some buses might prefer to detect and re-use the relevant + * information pertaining to this device. + */ +typedef int (*rte_bus_plug_t)(struct rte_devargs *da); + +/** + * Implementation specific remove function which is responsible for unlinking + * devices on that bus from assigned driver. + * Some buses will expect the same device to be plugged-back in eventually. + * The decision to release the associated meta-data (full-fledged bus-specific + * device representation) is left to the discretion of the bus. + */ +typedef int (*rte_bus_unplug_t)(struct rte_devargs *da); + +/** * A structure describing a generic bus. */ struct rte_bus { @@ -96,6 +114,8 @@ struct rte_bus { rte_bus_scan_t scan; /**< Scan for devices attached to bus */ rte_bus_probe_t probe; /**< Probe devices on bus */ rte_bus_find_device_t find_device; /**< Find device on bus */ + rte_bus_plug_t plug; /**< Probe single device for drivers */ + rte_bus_unplug_t unplug; /**< Remove single device from driver */ }; /** -- 2.1.4