From mboxrd@z Thu Jan 1 00:00:00 1970 From: Santosh Shukla Subject: [PATCH v7 2/9] eal/pci: get iommu class Date: Thu, 31 Aug 2017 03:26:11 +0000 Message-ID: <20170831032618.7120-3-santosh.shukla@caviumnetworks.com> References: <20170814161059.6684-1-santosh.shukla@caviumnetworks.com> <20170831032618.7120-1-santosh.shukla@caviumnetworks.com> Mime-Version: 1.0 Content-Type: text/plain Cc: thomas@monjalon.net, jerin.jacob@caviumnetworks.com, hemant.agrawal@nxp.com, olivier.matz@6wind.com, maxime.coquelin@redhat.com, sergio.gonzalez.monroy@intel.com, bruce.richardson@intel.com, shreyansh.jain@nxp.com, gaetan.rivet@6wind.com, anatoly.burakov@intel.com, stephen@networkplumber.org, aconole@redhat.com, Santosh Shukla To: dev@dpdk.org Return-path: Received: from NAM02-SN1-obe.outbound.protection.outlook.com (mail-sn1nam02on0049.outbound.protection.outlook.com [104.47.36.49]) by dpdk.org (Postfix) with ESMTP id 1D06E2C00 for ; Thu, 31 Aug 2017 05:27:07 +0200 (CEST) In-Reply-To: <20170831032618.7120-1-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. Patch also add rte_pci_get_iommu_class definition for bsdapp, in bsdapp case - api returns default iova mode. Signed-off-by: Santosh Shukla Signed-off-by: Jerin Jacob Reviewed-by: Maxime Coquelin --- v6 --> v7: - squashed v6 series patch [02/12] & [03/12] (Aaron comment). lib/librte_eal/bsdapp/eal/eal_pci.c | 10 ++++++++++ lib/librte_eal/bsdapp/eal/rte_eal_version.map | 1 + lib/librte_eal/common/include/rte_bus.h | 10 ++++++++++ lib/librte_eal/common/include/rte_pci.h | 11 +++++++++++ 4 files changed, 32 insertions(+) diff --git a/lib/librte_eal/bsdapp/eal/eal_pci.c b/lib/librte_eal/bsdapp/eal/eal_pci.c index 04eacdcc7..e2c252320 100644 --- a/lib/librte_eal/bsdapp/eal/eal_pci.c +++ b/lib/librte_eal/bsdapp/eal/eal_pci.c @@ -403,6 +403,16 @@ rte_pci_scan(void) return -1; } +/* + * Get iommu class of pci devices on the bus. + */ +enum rte_iova_mode +rte_pci_get_iommu_class(void) +{ + /* Supports only RTE_KDRV_NIC_UIO */ + return RTE_IOVA_PA; +} + int pci_update_device(const struct rte_pci_addr *addr) { diff --git a/lib/librte_eal/bsdapp/eal/rte_eal_version.map b/lib/librte_eal/bsdapp/eal/rte_eal_version.map index c819e3084..1fdcfb460 100644 --- a/lib/librte_eal/bsdapp/eal/rte_eal_version.map +++ b/lib/librte_eal/bsdapp/eal/rte_eal_version.map @@ -242,5 +242,6 @@ DPDK_17.11 { global: rte_pci_match; + rte_pci_get_iommu_class; } DPDK_17.08; diff --git a/lib/librte_eal/common/include/rte_bus.h b/lib/librte_eal/common/include/rte_bus.h index c79368d3c..9e40687e5 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 eab84c7a4..0e36de093 100644 --- a/lib/librte_eal/common/include/rte_pci.h +++ b/lib/librte_eal/common/include/rte_pci.h @@ -381,6 +381,17 @@ 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 * -- 2.13.0