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virtio-gpu: add VIRTIO_GPU_F_EDID feature 

The feature allows the guest request an EDID blob (describing monitor
capabilities) for a given scanout (aka virtual monitor connector).

It brings a new command message, which has just a scanout field (beside
the standard virtio-gpu header) and a response message which carries the
EDID data.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20181030063206.19528-2-kraxel@redhat.com
This commit is contained in:
Gerd Hoffmann 2018-10-30 07:32:05 +01:00
parent 0081cdfe63
commit 610c0c2b28
1 changed files with 18 additions and 0 deletions
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18
include/uapi/linux/virtio_gpu.h
View File

@ -41,6 +41,7 @@
#include <linux/types.h>
#define VIRTIO_GPU_F_VIRGL 0
#define VIRTIO_GPU_F_EDID 1
enum virtio_gpu_ctrl_type {
VIRTIO_GPU_UNDEFINED = 0,
@ -56,6 +57,7 @@ enum virtio_gpu_ctrl_type {
VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING,
VIRTIO_GPU_CMD_GET_CAPSET_INFO,
VIRTIO_GPU_CMD_GET_CAPSET,
VIRTIO_GPU_CMD_GET_EDID,
/* 3d commands */
VIRTIO_GPU_CMD_CTX_CREATE = 0x0200,
@ -76,6 +78,7 @@ enum virtio_gpu_ctrl_type {
VIRTIO_GPU_RESP_OK_DISPLAY_INFO,
VIRTIO_GPU_RESP_OK_CAPSET_INFO,
VIRTIO_GPU_RESP_OK_CAPSET,
VIRTIO_GPU_RESP_OK_EDID,
/* error responses */
VIRTIO_GPU_RESP_ERR_UNSPEC = 0x1200,
@ -291,6 +294,21 @@ struct virtio_gpu_resp_capset {
__u8 capset_data[];
};
/* VIRTIO_GPU_CMD_GET_EDID */
struct virtio_gpu_cmd_get_edid {
struct virtio_gpu_ctrl_hdr hdr;
__le32 scanout;
__le32 padding;
};
/* VIRTIO_GPU_RESP_OK_EDID */
struct virtio_gpu_resp_edid {
struct virtio_gpu_ctrl_hdr hdr;
__le32 size;
__le32 padding;
__u8 edid[1024];
};
#define VIRTIO_GPU_EVENT_DISPLAY (1 << 0)
struct virtio_gpu_config {