This patch introduces a new bus operation to allow the vDPA bus driver
to associate an ASID to a virtqueue group.
Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx>
---
include/linux/vdpa.h | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h
index 1e1163daa352..e2394995a3cd 100644
--- a/include/linux/vdpa.h
+++ b/include/linux/vdpa.h
@@ -160,6 +160,12 @@ struct vdpa_device {
* @get_generation: Get device config generation (optional)
* @vdev: vdpa device
* Returns u32: device generation
+ * @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)
@@ -237,6 +243,10 @@ struct vdpa_config_ops {
u64 iova, u64 size, u64 pa, u32 perm);
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);
--
2.20.1
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