From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga03.intel.com (mga03.intel.com [143.182.124.21]) by dpdk.org (Postfix) with ESMTP id CFB14AFCD for ; Tue, 10 Jun 2014 13:11:13 +0200 (CEST) Received: from azsmga001.ch.intel.com ([10.2.17.19]) by azsmga101.ch.intel.com with ESMTP; 10 Jun 2014 04:11:27 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.98,1008,1392192000"; d="scan'208";a="443766831" Received: from irvmail001.ir.intel.com ([163.33.26.43]) by azsmga001.ch.intel.com with ESMTP; 10 Jun 2014 04:11:25 -0700 Received: from sivswdev01.ir.intel.com (sivswdev01.ir.intel.com [10.237.217.45]) by irvmail001.ir.intel.com (8.14.3/8.13.6/MailSET/Hub) with ESMTP id s5ABBOXw000716; Tue, 10 Jun 2014 12:11:24 +0100 Received: from sivswdev01.ir.intel.com (localhost [127.0.0.1]) by sivswdev01.ir.intel.com with ESMTP id s5ABBOLC011549; Tue, 10 Jun 2014 12:11:24 +0100 Received: (from aburakov@localhost) by sivswdev01.ir.intel.com with id s5ABBO9V011544; Tue, 10 Jun 2014 12:11:24 +0100 From: Anatoly Burakov To: dev@dpdk.org Date: Tue, 10 Jun 2014 12:11:16 +0100 Message-Id: X-Mailer: git-send-email 1.7.0.7 In-Reply-To: References: In-Reply-To: References: Subject: [dpdk-dev] [PATCH v5 14/20] pci: enable VFIO device binding X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 10 Jun 2014 11:11:16 -0000 Add support for binding VFIO devices if RTE_PCI_DRV_NEED_MAPPING is set for this driver. Try VFIO first, if not mapped then try IGB_UIO too. Signed-off-by: Anatoly Burakov --- lib/librte_eal/linuxapp/eal/eal_pci.c | 42 ++++++++++++++++++++++++++++++++--- 1 file changed, 39 insertions(+), 3 deletions(-) diff --git a/lib/librte_eal/linuxapp/eal/eal_pci.c b/lib/librte_eal/linuxapp/eal/eal_pci.c index a0abec8..8a9cbf9 100644 --- a/lib/librte_eal/linuxapp/eal/eal_pci.c +++ b/lib/librte_eal/linuxapp/eal/eal_pci.c @@ -393,6 +393,27 @@ error: return -1; } +static int +pci_map_device(struct rte_pci_device *dev) +{ + int ret, mapped = 0; + + /* try mapping the NIC resources using VFIO if it exists */ +#ifdef VFIO_PRESENT + if (pci_vfio_is_enabled()) { + if ((ret = pci_vfio_map_resource(dev)) == 0) + mapped = 1; + else if (ret < 0) + return ret; + } +#endif + /* map resources for devices that use igb_uio */ + if (!mapped && (ret = pci_uio_map_resource(dev)) != 0) + return ret; + + return 0; +} + /* * If vendor/device ID match, call the devinit() function of the * driver. @@ -400,8 +421,8 @@ error: int rte_eal_pci_probe_one_driver(struct rte_pci_driver *dr, struct rte_pci_device *dev) { + int ret; struct rte_pci_id *id_table; - int ret = 0; for (id_table = dr->id_table ; id_table->vendor_id != 0; id_table++) { @@ -436,8 +457,7 @@ rte_eal_pci_probe_one_driver(struct rte_pci_driver *dr, struct rte_pci_device *d } if (dr->drv_flags & RTE_PCI_DRV_NEED_MAPPING) { - /* map resources for devices that use igb_uio */ - if ((ret = pci_uio_map_resource(dev)) != 0) + if ((ret = pci_map_device(dev)) != 0) return ret; } else if (dr->drv_flags & RTE_PCI_DRV_FORCE_UNBIND && rte_eal_process_type() == RTE_PROC_PRIMARY) { @@ -473,5 +493,21 @@ rte_eal_pci_init(void) RTE_LOG(ERR, EAL, "%s(): Cannot scan PCI bus\n", __func__); return -1; } +#ifdef VFIO_PRESENT + pci_vfio_enable(); + + if (pci_vfio_is_enabled()) { + + /* if we are primary process, create a thread to communicate with + * secondary processes. the thread will use a socket to wait for + * requests from secondary process to send open file descriptors, + * because VFIO does not allow multiple open descriptors on a group or + * VFIO container. + */ + if (internal_config.process_type == RTE_PROC_PRIMARY && + pci_vfio_mp_sync_setup() < 0) + return -1; + } +#endif return 0; } -- 1.8.1.4