From mboxrd@z Thu Jan 1 00:00:00 1970 From: Santosh Shukla Subject: [PATCH v4 03/12] eal/pci: get iommu class Date: Tue, 18 Jul 2017 11:29:41 +0530 Message-ID: <20170718055950.10208-4-santosh.shukla@caviumnetworks.com> References: <20170711061631.5018-1-santosh.shukla@caviumnetworks.com> <20170718055950.10208-1-santosh.shukla@caviumnetworks.com> Mime-Version: 1.0 Content-Type: text/plain Cc: bruce.richardson@intel.com, jerin.jacob@caviumnetworks.com, hemant.agrawal@nxp.com, shreyansh.jain@nxp.com, gaetan.rivet@6wind.com, sergio.gonzalez.monroy@intel.com, anatoly.burakov@intel.com, stephen@networkplumber.org, maxime.coquelin@redhat.com, olivier.matz@6wind.com, Santosh Shukla To: thomas@monjalon.net, dev@dpdk.org Return-path: Received: from NAM01-BN3-obe.outbound.protection.outlook.com (mail-bn3nam01on0079.outbound.protection.outlook.com [104.47.33.79]) by dpdk.org (Postfix) with ESMTP id 1F52D7CA9 for ; Tue, 18 Jul 2017 08:00:49 +0200 (CEST) In-Reply-To: <20170718055950.10208-1-santosh.shukla@caviumnetworks.com> List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Introducing rte_pci_get_iommu_class API which helps to get iommu class of PCI device on the bus and returns preferred iova mapping mode for PCI bus. Signed-off-by: Santosh Shukla Signed-off-by: Jerin Jacob --- v3 --> v4: - Created a separate patch per suggestion from Maxime. Initially thought to squash patch into [01/12] but then [01/12] will have more context so decided to keep it as separate patch. lib/librte_eal/common/include/rte_bus.h | 10 ++++++++++ lib/librte_eal/common/include/rte_pci.h | 11 +++++++++++ 2 files changed, 21 insertions(+) diff --git a/lib/librte_eal/common/include/rte_bus.h b/lib/librte_eal/common/include/rte_bus.h index af9f0e13f..e06084253 100644 --- a/lib/librte_eal/common/include/rte_bus.h +++ b/lib/librte_eal/common/include/rte_bus.h @@ -55,6 +55,16 @@ extern "C" { /** Double linked list of buses */ TAILQ_HEAD(rte_bus_list, rte_bus); + +/** + * IOVA mapping mode. + */ +enum rte_iova_mode { + RTE_IOVA_DC = 0, /* Don't care mode */ + RTE_IOVA_PA = (1 << 0), + RTE_IOVA_VA = (1 << 1) +}; + /** * Bus specific scan for devices attached on the bus. * For each bus object, the scan would be responsible for finding devices and diff --git a/lib/librte_eal/common/include/rte_pci.h b/lib/librte_eal/common/include/rte_pci.h index 47f0532e4..a67d77f22 100644 --- a/lib/librte_eal/common/include/rte_pci.h +++ b/lib/librte_eal/common/include/rte_pci.h @@ -383,6 +383,17 @@ int rte_pci_match(const struct rte_pci_driver *pci_drv, const struct rte_pci_device *pci_dev); + +/** + * Get iommu class of PCI devices on the bus. + * And return their preferred iova mapping mode. + * + * @return + * - enum rte_iova_mode. + */ +enum rte_iova_mode +rte_pci_get_iommu_class(void); + /** * Map the PCI device resources in user space virtual memory address * -- 2.11.0