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Mon, 5 Jun 2023 08:26:35 -0500 From: Nipun Gupta To: , , , , , CC: , , , Nipun Gupta Subject: [PATCH v6 2/4] bus/cdx: add DMA map and unmap support Date: Mon, 5 Jun 2023 18:56:22 +0530 Message-ID: <20230605132624.8626-3-nipun.gupta@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230605132624.8626-1-nipun.gupta@amd.com> References: <20230124140746.594066-1-nipun.gupta@amd.com> <20230605132624.8626-1-nipun.gupta@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM6NAM11FT041:EE_|SA1PR12MB7174:EE_ X-MS-Office365-Filtering-Correlation-Id: e18b8b1d-4071-445b-2472-08db65c89622 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17; 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This change adds the callback support for map and unmap APIs as well as fetching the IOMMU class. Signed-off-by: Nipun Gupta Acked-by: Ferruh Yigit --- drivers/bus/cdx/cdx.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/drivers/bus/cdx/cdx.c b/drivers/bus/cdx/cdx.c index 9386cb7a0a..9ad8f73424 100644 --- a/drivers/bus/cdx/cdx.c +++ b/drivers/bus/cdx/cdx.c @@ -488,12 +488,42 @@ cdx_find_device(const struct rte_device *start, rte_dev_cmp_t cmp, return NULL; } +static int +cdx_dma_map(struct rte_device *dev, void *addr, uint64_t iova, size_t len) +{ + RTE_SET_USED(dev); + + return rte_vfio_container_dma_map(RTE_VFIO_DEFAULT_CONTAINER_FD, + (uintptr_t)addr, iova, len); +} + +static int +cdx_dma_unmap(struct rte_device *dev, void *addr, uint64_t iova, size_t len) +{ + RTE_SET_USED(dev); + + return rte_vfio_container_dma_unmap(RTE_VFIO_DEFAULT_CONTAINER_FD, + (uintptr_t)addr, iova, len); +} + +static enum rte_iova_mode +cdx_get_iommu_class(void) +{ + if (TAILQ_EMPTY(&rte_cdx_bus.device_list)) + return RTE_IOVA_DC; + + return RTE_IOVA_VA; +} + struct rte_cdx_bus rte_cdx_bus = { .bus = { .scan = cdx_scan, .probe = cdx_probe, .find_device = cdx_find_device, .parse = cdx_parse, + .dma_map = cdx_dma_map, + .dma_unmap = cdx_dma_unmap, + .get_iommu_class = cdx_get_iommu_class, }, .device_list = TAILQ_HEAD_INITIALIZER(rte_cdx_bus.device_list), .driver_list = TAILQ_HEAD_INITIALIZER(rte_cdx_bus.driver_list),