From: Honglei Huang <Honglei1.Huang@xxxxxxx>
This makes blob userptr resource available to guest userspace.
- Flag VIRTGPU_BLOB_FLAG_USE_USERPTR for guest userspace blob create,
enable this flag to indicate blob userptr resource create.
- Flag VIRTGPU_BLOB_FLAG_USERPTR_RDONLY used for read only userptr,
if not set then the userptr will be writeable.
- New parameter blob_userptr for bypass userspace memory address to
virtio GPU, like other userptr design, virtio GPU needs a userspace
memory for device access.
Used for userptr feature, in compute side, this feature is basic and
essential. Let device to access userspace memory directly instead of
copying.
Signed-off-by: Honglei Huang <Honglei1.Huang@xxxxxxx>
---
include/uapi/drm/virtgpu_drm.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/include/uapi/drm/virtgpu_drm.h b/include/uapi/drm/virtgpu_drm.h
index c2ce71987e9b..071f31752721 100644
--- a/include/uapi/drm/virtgpu_drm.h
+++ b/include/uapi/drm/virtgpu_drm.h
@@ -179,13 +179,14 @@ struct drm_virtgpu_resource_create_blob {
#define VIRTGPU_BLOB_FLAG_USE_MAPPABLE 0x0001
#define VIRTGPU_BLOB_FLAG_USE_SHAREABLE 0x0002
#define VIRTGPU_BLOB_FLAG_USE_CROSS_DEVICE 0x0004
+#define VIRTGPU_BLOB_FLAG_USE_USERPTR 0x0008
+#define VIRTGPU_BLOB_FLAG_USERPTR_RDONLY 0x0010
/* zero is invalid blob_mem */
__u32 blob_mem;
__u32 blob_flags;
__u32 bo_handle;
__u32 res_handle;
__u64 size;
-
/*
* for 3D contexts with VIRTGPU_BLOB_MEM_HOST3D_GUEST and
* VIRTGPU_BLOB_MEM_HOST3D otherwise, must be zero.
@@ -194,6 +195,7 @@ struct drm_virtgpu_resource_create_blob {
__u32 cmd_size;
__u64 cmd;
__u64 blob_id;
+ __u64 userptr;
};
#define VIRTGPU_CONTEXT_PARAM_CAPSET_ID 0x0001
--
2.34.1
