Commit 592d9fba authored by David Stevens's avatar David Stevens Committed by Gerd Hoffmann
Browse files

virtio-gpu: add VIRTIO_GPU_F_RESOURCE_UUID feature 



This feature allows the guest to request a UUID from the host for a
particular virtio_gpu resource. The UUID can then be shared with other
virtio devices, to allow the other host devices to access the
virtio_gpu's corresponding host resource.

Signed-off-by: default avatarDavid Stevens <stevensd@chromium.org>
Acked-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20200818071343.3461203-3-stevensd@chromium.org


Signed-off-by: default avatarGerd Hoffmann <kraxel@redhat.com>
parent a0308938

include/uapi/linux/virtio_gpu.h

+19 −0
Original line number Diff line number Diff line
@@ -50,6 +50,10 @@ 
 * VIRTIO_GPU_CMD_GET_EDID

 */

#define VIRTIO_GPU_F_EDID                1

/*

 * VIRTIO_GPU_CMD_RESOURCE_ASSIGN_UUID

 */

#define VIRTIO_GPU_F_RESOURCE_UUID       2



enum virtio_gpu_ctrl_type {

	VIRTIO_GPU_UNDEFINED = 0,
@@ -66,6 +70,7 @@ enum virtio_gpu_ctrl_type { 
	VIRTIO_GPU_CMD_GET_CAPSET_INFO,

	VIRTIO_GPU_CMD_GET_CAPSET,

	VIRTIO_GPU_CMD_GET_EDID,

	VIRTIO_GPU_CMD_RESOURCE_ASSIGN_UUID,



	/* 3d commands */

	VIRTIO_GPU_CMD_CTX_CREATE = 0x0200,
@@ -87,6 +92,7 @@ enum virtio_gpu_ctrl_type { 
	VIRTIO_GPU_RESP_OK_CAPSET_INFO,

	VIRTIO_GPU_RESP_OK_CAPSET,

	VIRTIO_GPU_RESP_OK_EDID,

	VIRTIO_GPU_RESP_OK_RESOURCE_UUID,



	/* error responses */

	VIRTIO_GPU_RESP_ERR_UNSPEC = 0x1200,
@@ -340,4 +346,17 @@ enum virtio_gpu_formats { 
	VIRTIO_GPU_FORMAT_R8G8B8X8_UNORM  = 134,

};



/* VIRTIO_GPU_CMD_RESOURCE_ASSIGN_UUID */

struct virtio_gpu_resource_assign_uuid {

	struct virtio_gpu_ctrl_hdr hdr;

	__le32 resource_id;

	__le32 padding;

};



/* VIRTIO_GPU_RESP_OK_RESOURCE_UUID */

struct virtio_gpu_resp_resource_uuid {

	struct virtio_gpu_ctrl_hdr hdr;

	__u8 uuid[16];

};



#endif