From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-f44.google.com (mail-wm0-f44.google.com [74.125.82.44]) by dpdk.org (Postfix) with ESMTP id 2C0F52BE1 for ; Tue, 27 Jun 2017 18:11:39 +0200 (CEST) Received: by mail-wm0-f44.google.com with SMTP id 62so29302285wmw.1 for ; Tue, 27 Jun 2017 09:11:39 -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=duxSWFTF9uoUShsoDmEW1Jo/+ZNBgpdn9QAkSCGx4BM=; b=Hl4xd6xKNqglfUHIOe+HXT7DpH3q32LKO1onaRgki0ecuLm3VzTEDMKamLJBYAM1Rd 8T1ji+KxcP0734HVR+uC2oa1myOMaphYY5cAI9GXDw4+LMpYOU9HirstHv1juq45eQZy 7lwvmBFFiNyjkjndiHS0BXGn6/FJWFpa2JakTHnSOWW4pEMpws4AuF5x+9qrNXBWZ3aH CkAIcYvDdNcwM76AmiK9CiMKuujLSorakRPcxV3JZ7Iynjd1fDAmjvwCp84Y1pZauW6z VQoNnFt8IqO2JL4x+2YTkq2kOPmMCjgDKwcDnjgfF9SHVcC4vYGoli7tFQH25ZNAl0Yw fmdw== 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=duxSWFTF9uoUShsoDmEW1Jo/+ZNBgpdn9QAkSCGx4BM=; b=IffYBKBuz2I/PyC4m2xijib1M3rGiU64u/TXSsLABNUftiTI9O6YMxBQrgMkL+6dr3 vMH5ESV60GpkciPWGz5ctZWokRCQrSxcDswtz/4/WKOHKeOWnapcOCqThQHCraAxNYqe Lrk1OcCqpObOOZyBLRPmeaOiT1gJk4Bv3DLb2C4/2AXL/lONg5pfutZ+mrLWxMOcZY8H 2AlQwgwaWlxG9xjV8L9ny+UXM6P78hNDL0slpjgxjBfrJ/hnNRld04aVvAhf3u6cJ/fn Apr5yEzMsJBiG1cioEkkH8cAL0OFp7NCzdXyUqfz9kwbJLIsP4BWA1EC5Rmn83vevwL0 9hjA== X-Gm-Message-State: AKS2vOzwuw9QydLA1r41OgsjqRTtuDk6EfcUPtv3CHNxcOYZ3SeOUoPZ 2nY2jnuylx4huui3Ud0= X-Received: by 10.28.88.3 with SMTP id m3mr4132679wmb.28.1498579898495; Tue, 27 Jun 2017 09:11:38 -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 v13sm4080465wmd.5.2017.06.27.09.11.37 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 27 Jun 2017 09:11:37 -0700 (PDT) From: Gaetan Rivet To: dev@dpdk.org Cc: Jan Blunck , Gaetan Rivet Date: Tue, 27 Jun 2017 18:11:12 +0200 Message-Id: X-Mailer: git-send-email 2.1.4 In-Reply-To: References: In-Reply-To: References: Subject: [dpdk-dev] [PATCH v6 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: Tue, 27 Jun 2017 16:11:39 -0000 From: Jan Blunck Signed-off-by: Jan Blunck Signed-off-by: Gaetan Rivet --- lib/librte_eal/common/eal_common_bus.c | 2 ++ lib/librte_eal/common/include/rte_bus.h | 31 +++++++++++++++++++++++++++++++ 2 files changed, 33 insertions(+) diff --git a/lib/librte_eal/common/eal_common_bus.c b/lib/librte_eal/common/eal_common_bus.c index dde6c83..83d9c07 100644 --- a/lib/librte_eal/common/eal_common_bus.c +++ b/lib/librte_eal/common/eal_common_bus.c @@ -50,6 +50,8 @@ rte_bus_register(struct rte_bus *bus) /* A bus should mandatorily have the scan implemented */ 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 9aa047d..8c2d19c 100644 --- a/lib/librte_eal/common/include/rte_bus.h +++ b/lib/librte_eal/common/include/rte_bus.h @@ -109,6 +109,35 @@ typedef struct rte_device * const struct rte_device *start); /** + * 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. + * + * @param da + * Device declaration. + * + * @return + * The pointer to a valid rte_device usable by the bus on success. + * NULL on error. rte_errno is then set. + */ +typedef struct rte_device * (*rte_bus_plug_t)(struct rte_devargs *da); + +/** + * Implementation specific remove function which is responsible for unlinking + * devices on that bus from assigned driver. + * + * @param dev + * Device pointer that was returned by a previous device plug call. + * + * @return + * 0 on success. + * !0 on error. rte_errno is then set. + */ +typedef int (*rte_bus_unplug_t)(struct rte_device *dev); + +/** * A structure describing a generic bus. */ struct rte_bus { @@ -117,6 +146,8 @@ 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 a device on the bus */ + rte_bus_plug_t plug; /**< Probe single device for drivers */ + rte_bus_unplug_t unplug; /**< Remove single device from driver */ }; /** -- 2.1.4