From 03dd63c8fae4599439a30e0dde91061789260dbe Mon Sep 17 00:00:00 2001 From: Dragos Tatulea Date: Wed, 18 Oct 2023 20:14:53 +0300 Subject: vdpa/mlx5: Enable hw support for vq descriptor mapping MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Vq descriptor mappings are supported in hardware by filling in an additional mkey which contains the descriptor mappings to the hw vq. A previous patch in this series added support for hw mkey (mr) creation for ASID 1. This patch fills in both the vq data and vq descriptor mkeys based on group ASID mapping. The feature is signaled to the vdpa core through the presence of the .get_vq_desc_group op. Acked-by: Jason Wang Acked-by: Eugenio Pérez Signed-off-by: Dragos Tatulea Message-Id: <20231018171456.1624030-16-dtatulea@nvidia.com> Signed-off-by: Michael S. Tsirkin Reviewed-by: Si-Wei Liu Tested-by: Si-Wei Liu Tested-by: Lei Yang --- include/linux/mlx5/mlx5_ifc_vdpa.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'include/linux/mlx5') diff --git a/include/linux/mlx5/mlx5_ifc_vdpa.h b/include/linux/mlx5/mlx5_ifc_vdpa.h index 9becdc3fa503..b86d51a855f6 100644 --- a/include/linux/mlx5/mlx5_ifc_vdpa.h +++ b/include/linux/mlx5/mlx5_ifc_vdpa.h @@ -74,7 +74,11 @@ struct mlx5_ifc_virtio_q_bits { u8 reserved_at_320[0x8]; u8 pd[0x18]; - u8 reserved_at_340[0xc0]; + u8 reserved_at_340[0x20]; + + u8 desc_group_mkey[0x20]; + + u8 reserved_at_380[0x80]; }; struct mlx5_ifc_virtio_net_q_object_bits { @@ -141,6 +145,7 @@ enum { MLX5_VIRTQ_MODIFY_MASK_STATE = (u64)1 << 0, MLX5_VIRTQ_MODIFY_MASK_DIRTY_BITMAP_PARAMS = (u64)1 << 3, MLX5_VIRTQ_MODIFY_MASK_DIRTY_BITMAP_DUMP_ENABLE = (u64)1 << 4, + MLX5_VIRTQ_MODIFY_MASK_DESC_GROUP_MKEY = (u64)1 << 14, }; enum { -- cgit v1.2.3