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.

Gerd Hoffmann committed 8 years ago

Commit 610c0c21 parent 0081cdf1 file · +18 −0Browse files

Showing the changes to include/uapi/linux (1 of 1 file). Show all

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include/uapi/linux/virtio_gpu.h+18−0

@@ -41,6 +41,7 @@ · 40 unmodified lines
41	41	#include <linux/types.h>
42	42
43	43	#define VIRTIO_GPU_F_VIRGL 0
	44	+#define VIRTIO_GPU_F_EDID 1
44	45
45	46	enum virtio_gpu_ctrl_type {
46	47	VIRTIO_GPU_UNDEFINED = 0,
@@ -56,6 +57,7 @@ enum virtio_gpu_ctrl_type { · 9 unmodified lines
56	57	VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING,
57	58	VIRTIO_GPU_CMD_GET_CAPSET_INFO,
58	59	VIRTIO_GPU_CMD_GET_CAPSET,
	60	+ VIRTIO_GPU_CMD_GET_EDID,
59	61
60	62	/* 3d commands */
61	63	VIRTIO_GPU_CMD_CTX_CREATE = 0x0200,
@@ -76,6 +78,7 @@ enum virtio_gpu_ctrl_type { · 14 unmodified lines
76	78	VIRTIO_GPU_RESP_OK_DISPLAY_INFO,
77	79	VIRTIO_GPU_RESP_OK_CAPSET_INFO,
78	80	VIRTIO_GPU_RESP_OK_CAPSET,
	81	+ VIRTIO_GPU_RESP_OK_EDID,
79	82
80	83	/* error responses */
81	84	VIRTIO_GPU_RESP_ERR_UNSPEC = 0x1200,
@@ -291,6 +294,21 @@ struct virtio_gpu_resp_capset { · 209 unmodified lines
291	294	__u8 capset_data[];
292	295	};
293	296
	297	+/* VIRTIO_GPU_CMD_GET_EDID */
	298	+struct virtio_gpu_cmd_get_edid {
	299	+ struct virtio_gpu_ctrl_hdr hdr;
	300	+ __le32 scanout;
	301	+ __le32 padding;
	302	+};
	303	+
	304	+/* VIRTIO_GPU_RESP_OK_EDID */
	305	+struct virtio_gpu_resp_edid {
	306	+ struct virtio_gpu_ctrl_hdr hdr;
	307	+ __le32 size;
	308	+ __le32 padding;
	309	+ __u8 edid[1024];
	310	+};
	311	+
294	312	#define VIRTIO_GPU_EVENT_DISPLAY (1 << 0)
295	313
296	314	struct virtio_gpu_config {