Commit 46d554b1 authored by Gautam Dawar's avatar Gautam Dawar Committed by Michael S. Tsirkin
Browse files

vdpa: introduce config operations for associating ASID to a virtqueue group 



This patch introduces a new bus operation to allow the vDPA bus driver
to associate an ASID to a virtqueue group.

Signed-off-by: default avatarJason Wang <jasowang@redhat.com>
Signed-off-by: default avatarGautam Dawar <gdawar@xilinx.com>
Message-Id: <20220330180436.24644-8-gdawar@xilinx.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent db9adcbf

include/linux/vdpa.h

+8 −0
Original line number Diff line number Diff line
@@ -240,6 +240,12 @@ struct vdpa_map_file { 
 *				@vdev: vdpa device

 *				Returns the iova range supported by

 *				the device.

 * @set_group_asid:		Set address space identifier for a

 *				virtqueue group

 *				@vdev: vdpa device

 *				@group: virtqueue group

 *				@asid: address space id for this group

 *				Returns integer: success (0) or error (< 0)

 * @set_map:			Set device memory mapping (optional)

 *				Needed for device that using device

 *				specific DMA translation (on-chip IOMMU)
@@ -325,6 +331,8 @@ struct vdpa_config_ops { 
		       u64 iova, u64 size, u64 pa, u32 perm, void *opaque);

	int (*dma_unmap)(struct vdpa_device *vdev, unsigned int asid,

			 u64 iova, u64 size);

	int (*set_group_asid)(struct vdpa_device *vdev, unsigned int group,

			      unsigned int asid);



	/* Free device resources */

	void (*free)(struct vdpa_device *vdev);