Messages in this thread Patch in this message | ![/](/images/icornerl.gif) | | From | Jason Wang <> | Subject | [PATCH V2 2/5] vdpa: introduce get_vq_dma_device() | Date | Thu, 19 Jan 2023 14:15:22 +0800 |
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This patch introduces a new method to query the dma device that is use for a specific virtqueue.
Reviewed-by: Eli Cohen <elic@nvidia.com> Tested-by: Eli Cohen <elic@nvidia.com> Signed-off-by: Jason Wang <jasowang@redhat.com> --- include/linux/vdpa.h | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h index 6d0f5e4e82c2..3ec13aee35f5 100644 --- a/include/linux/vdpa.h +++ b/include/linux/vdpa.h @@ -282,6 +282,11 @@ struct vdpa_map_file { * @iova: iova to be unmapped * @size: size of the area * Returns integer: success (0) or error (< 0) + * @get_vq_dma_dev: Get the dma device for a specific + * virtqueue (optional) + * @vdev: vdpa device + * @idx: virtqueue index + * Returns pointer to structure device or error (NULL) * @free: Free resources that belongs to vDPA (optional) * @vdev: vdpa device */ @@ -341,6 +346,7 @@ struct vdpa_config_ops { u64 iova, u64 size); int (*set_group_asid)(struct vdpa_device *vdev, unsigned int group, unsigned int asid); + struct device *(*get_vq_dma_dev)(struct vdpa_device *vdev, u16 idx); /* Free device resources */ void (*free)(struct vdpa_device *vdev); -- 2.25.1
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