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virtio-gpu: add VIRTIO_GPU_F_RESOURCE_UUID feature

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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: David Stevens <stevensd@chromium.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20200818071343.3461203-3-stevensd@chromium.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
David Stevens 2020-08-18 16:13:42 +09:00 committed by Gerd Hoffmann
parent a0308938ec
commit 592d9fba33
1 changed files with 19 additions and 0 deletions
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19
include/uapi/linux/virtio_gpu.h
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@ -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