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Like EFA there is no support for revocation so we simply call the ib_umem_dmabuf_get_pinned() to obtain a umem instead of the normal ib_umem_get(). Everything else stays the same. Signed-off-by: Jason Gunthorpe --- drivers/infiniband/hw/mlx5/devx.c | 24 +++++++++++++++++++++--- include/uapi/rdma/mlx5_user_ioctl_cmds.h | 1 + 2 files changed, 22 insertions(+), 3 deletions(-) diff --git a/drivers/infiniband/hw/mlx5/devx.c b/drivers/infiniband/hw/mlx5/devx.c index 2a2a9e9afc9dad..291e73d7928276 100644 --- a/drivers/infiniband/hw/mlx5/devx.c +++ b/drivers/infiniband/hw/mlx5/devx.c @@ -2181,9 +2181,25 @@ static int devx_umem_get(struct mlx5_ib_dev *dev, struct ib_ucontext *ucontext, if (err) return err; - obj->umem = ib_umem_get(&dev->ib_dev, addr, size, access); - if (IS_ERR(obj->umem)) - return PTR_ERR(obj->umem); + if (uverbs_attr_is_valid(attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_DMABUF_FD)) { + struct ib_umem_dmabuf *umem_dmabuf; + int dmabuf_fd; + + err = uverbs_get_raw_fd(&dmabuf_fd, attrs, + MLX5_IB_ATTR_DEVX_UMEM_REG_DMABUF_FD); + if (err) + return -EFAULT; + + umem_dmabuf = ib_umem_dmabuf_get_pinned( + &dev->ib_dev, addr, size, dmabuf_fd, access); + if (IS_ERR(umem_dmabuf)) + return PTR_ERR(umem_dmabuf); + obj->umem = &umem_dmabuf->umem; + } else { + obj->umem = ib_umem_get(&dev->ib_dev, addr, size, access); + if (IS_ERR(obj->umem)) + return PTR_ERR(obj->umem); + } return 0; } @@ -2833,6 +2849,8 @@ DECLARE_UVERBS_NAMED_METHOD( UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_LEN, UVERBS_ATTR_TYPE(u64), UA_MANDATORY), + UVERBS_ATTR_RAW_FD(MLX5_IB_ATTR_DEVX_UMEM_REG_DMABUF_FD, + UA_OPTIONAL), UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_ACCESS, enum ib_access_flags), UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_PGSZ_BITMAP, diff --git a/include/uapi/rdma/mlx5_user_ioctl_cmds.h b/include/uapi/rdma/mlx5_user_ioctl_cmds.h index 3bee490eb5857f..595edad03dfe54 100644 --- a/include/uapi/rdma/mlx5_user_ioctl_cmds.h +++ b/include/uapi/rdma/mlx5_user_ioctl_cmds.h @@ -174,6 +174,7 @@ enum mlx5_ib_devx_umem_reg_attrs { MLX5_IB_ATTR_DEVX_UMEM_REG_ACCESS, MLX5_IB_ATTR_DEVX_UMEM_REG_OUT_ID, MLX5_IB_ATTR_DEVX_UMEM_REG_PGSZ_BITMAP, + MLX5_IB_ATTR_DEVX_UMEM_REG_DMABUF_FD, }; enum mlx5_ib_devx_umem_dereg_attrs { -- 2.37.2 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 06284C0502C for ; 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DIR:OUT; SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?x6dXc0wVw7ppooyxGAXnR90j/mLxcjgTVjGXGbcdGGtFC+IO+z2gucv3/kwP?= =?us-ascii?Q?4WBt3RQZXOzeNBpdIxg6wY0KWQHt9gVkDVhB1EQMGnFuZbVXNdB1lWEmEv74?= =?us-ascii?Q?v/pN8qSPn/Cd4q2Ko60gTeaSTVgLVTx/Kabx/t3Xv7GgpRGhy1mG2rkUQLkN?= =?us-ascii?Q?1RpHTHQNeiPREKsbeUGDkDMkLwR1nUWx+wsCvm8r35yFldNeQD8FOEm5Lmi6?= =?us-ascii?Q?D2jwUCrcHiITwKcnqyEeIE5MgmpcO79ZSJDpIsPCzWleNdMF8fLOot4+xzxm?= =?us-ascii?Q?K2fEZb4/f/98hLA+v/gQgHJd49ATIrVkch3tq05BnFVi3JoKAWG1a0Hak60J?= =?us-ascii?Q?8ZewKgXPvGutRn0EFV7PVxCAeZWxHKCMhg7bIJpElHtdF5krPsB9G1XSq/gr?= =?us-ascii?Q?nOXCzM2xtr019N1HkGfmP0Cc1pkLka0duF9PzyFX6XxO0umiG4Lw9/708JrD?= =?us-ascii?Q?N2OoQcpDgZOege+CyYTnWsPEnANsgQZRuTNuItcAkMjJdFEi+aO/BY0SBY0J?= =?us-ascii?Q?A+mHdmPHnJCUkBf0dG5BUGCshCrsQUtl5XPH5u7PQuAuGT9T3Hbsw+DJBpxF?= =?us-ascii?Q?i97iwynXkdrvA/Ao7HpMy3NXxDi0z3ocY9PqMTNjRr0g8f1SpuUwaZgPh8wL?= =?us-ascii?Q?CtDqkXYRdwPqvBaNm5hq9/1B6EciJj91yTUENGIyLIl1gVOlMEpgAlaCvHvc?= =?us-ascii?Q?2vu0Deg/qopjsMpRsmdqbqnDGC2cI2M8FT2WHwaPq895SdkhyBtvDn7Wgpmc?= =?us-ascii?Q?BuTAbX4TYsulUf6dXxzv5TWBxpYO4EWdRFWGglbuntxjFKx5CU+sU+ABmgv+?= =?us-ascii?Q?I0Al8/7uogw9LeqFxEZ4qZC0TX2kA8KhcEKw9knrjxpVUxAo9m3pJtXcybHE?= =?us-ascii?Q?RaAWmLTPS82W5Y91lZyhc8UPuElV/Y4RxhB3V4dcmBVQMeCdti6lwcIRL0Nh?= =?us-ascii?Q?lbIlYu6yEevQYlqy9OLu91j55MpDJIEadc/zLT0rv6KnMo5yHgh3mt55rc/S?= =?us-ascii?Q?ikOF1puF8h8W6G3w32rBqdzQ5UUiokndEqFL/IrT0QRlCBkleEi+7DxMFmvQ?= =?us-ascii?Q?3l6z4g/DWTPop29Cw6nGdQnIpTqhtEQ8MApCqqlls+fJ6YbFpkNamAu1j3tz?= =?us-ascii?Q?eoIh9Jou6fXIEorR4L80jdWlPCZ2WcG9hd8/Co5IEuUchWDRTkRYbAMgto1V?= =?us-ascii?Q?SPlvk+fD4Ms2mpB3KBQ3FNX1O6x8v5xBGaMNOYbInoZpcW6yzmsDOTxVBL5P?= =?us-ascii?Q?VLNDa91Z8RNSAcquEsGvPIvejsMIJSTlGFqhddrRAcNqhYZCYLVGjs5BrRKc?= =?us-ascii?Q?y8BmbbR545J4aMuYQIiB5RrhVQK/1ioyOeLLm8QwLeuasLZE46wrB2VuQSw3?= =?us-ascii?Q?t+9pvkkKfgJ5sBsxiBvmjMsirGqCtyLoSucXuA6MSqtI3c/mxt2s1TDNHt4Q?= =?us-ascii?Q?fvGB+a+Ag7g6apsothD7PZGkctKYNV6nnq5XQBlLo+iMHUakASomSbQB257S?= =?us-ascii?Q?0QBQkUsAiJApsZkxdY/PMCIwGL8KIJ0vGsSa8mVE7H2QhVa5bfwhRDhJSUja?= =?us-ascii?Q?/yPF/tSUh+5ciYaeB0Ri1fxhhp/z9PJOLM8Vmf7/?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 147bd910-42ed-4492-60c5-08da8c25302a X-MS-Exchange-CrossTenant-AuthSource: MN2PR12MB4192.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 01 Sep 2022 14:20:57.7046 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: MIZlG+iQqfBzkvtWFOLpWw6rQThS4EMk4hdwKJg7EO6Rp0EuZQbZjsyMaj6RmdLR X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY5PR12MB5000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mohammad Kabat , Kamal Heib Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" This is modeled after the similar EFA enablement in commit 66f4817b5712 ("RDMA/efa: Add support for dmabuf memory regions"). Like EFA there is no support for revocation so we simply call the ib_umem_dmabuf_get_pinned() to obtain a umem instead of the normal ib_umem_get(). Everything else stays the same. Signed-off-by: Jason Gunthorpe --- drivers/infiniband/hw/mlx5/devx.c | 24 +++++++++++++++++++++--- include/uapi/rdma/mlx5_user_ioctl_cmds.h | 1 + 2 files changed, 22 insertions(+), 3 deletions(-) diff --git a/drivers/infiniband/hw/mlx5/devx.c b/drivers/infiniband/hw/mlx5/devx.c index 2a2a9e9afc9dad..291e73d7928276 100644 --- a/drivers/infiniband/hw/mlx5/devx.c +++ b/drivers/infiniband/hw/mlx5/devx.c @@ -2181,9 +2181,25 @@ static int devx_umem_get(struct mlx5_ib_dev *dev, struct ib_ucontext *ucontext, if (err) return err; - obj->umem = ib_umem_get(&dev->ib_dev, addr, size, access); - if (IS_ERR(obj->umem)) - return PTR_ERR(obj->umem); + if (uverbs_attr_is_valid(attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_DMABUF_FD)) { + struct ib_umem_dmabuf *umem_dmabuf; + int dmabuf_fd; + + err = uverbs_get_raw_fd(&dmabuf_fd, attrs, + MLX5_IB_ATTR_DEVX_UMEM_REG_DMABUF_FD); + if (err) + return -EFAULT; + + umem_dmabuf = ib_umem_dmabuf_get_pinned( + &dev->ib_dev, addr, size, dmabuf_fd, access); + if (IS_ERR(umem_dmabuf)) + return PTR_ERR(umem_dmabuf); + obj->umem = &umem_dmabuf->umem; + } else { + obj->umem = ib_umem_get(&dev->ib_dev, addr, size, access); + if (IS_ERR(obj->umem)) + return PTR_ERR(obj->umem); + } return 0; } @@ -2833,6 +2849,8 @@ DECLARE_UVERBS_NAMED_METHOD( UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_LEN, UVERBS_ATTR_TYPE(u64), UA_MANDATORY), + UVERBS_ATTR_RAW_FD(MLX5_IB_ATTR_DEVX_UMEM_REG_DMABUF_FD, + UA_OPTIONAL), UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_ACCESS, enum ib_access_flags), UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_PGSZ_BITMAP, diff --git a/include/uapi/rdma/mlx5_user_ioctl_cmds.h b/include/uapi/rdma/mlx5_user_ioctl_cmds.h index 3bee490eb5857f..595edad03dfe54 100644 --- a/include/uapi/rdma/mlx5_user_ioctl_cmds.h +++ b/include/uapi/rdma/mlx5_user_ioctl_cmds.h @@ -174,6 +174,7 @@ enum mlx5_ib_devx_umem_reg_attrs { MLX5_IB_ATTR_DEVX_UMEM_REG_ACCESS, MLX5_IB_ATTR_DEVX_UMEM_REG_OUT_ID, MLX5_IB_ATTR_DEVX_UMEM_REG_PGSZ_BITMAP, + MLX5_IB_ATTR_DEVX_UMEM_REG_DMABUF_FD, }; enum mlx5_ib_devx_umem_dereg_attrs { -- 2.37.2