This patch introduces a new method to query the dma device that is use
for a specific virtqueue.
Reviewed-by: Eli Cohen <elic@xxxxxxxxxx>
Tested-by: Eli Cohen <elic@xxxxxxxxxx>
Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx>
---
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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