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Date: Thu, 18 Oct 2018 08:39:46 +0200 From: Gerd Hoffmann <kraxel@...hat.com> To: "Michael S. Tsirkin" <mst@...hat.com> Cc: dri-devel@...ts.freedesktop.org, virtio-dev@...ts.oasis-open.org, Gerd Hoffmann <kraxel@...hat.com>, David Airlie <airlied@...ux.ie>, Jason Wang <jasowang@...hat.com>, virtualization@...ts.linux-foundation.org (open list:VIRTIO GPU DRIVER), linux-kernel@...r.kernel.org (open list) Subject: [PATCH v3] 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@...hat.com> Reviewed-by: Dave Airlie <airlied@...hat.com> --- include/uapi/linux/virtio_gpu.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/include/uapi/linux/virtio_gpu.h b/include/uapi/linux/virtio_gpu.h index f43c3c6171..68198691a6 100644 --- a/include/uapi/linux/virtio_gpu.h +++ b/include/uapi/linux/virtio_gpu.h @@ -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 +294,19 @@ 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; +}; + +/* VIRTIO_GPU_RESP_OK_EDID */ +struct virtio_gpu_resp_edid { + struct virtio_gpu_ctrl_hdr hdr; + __le32 size; + __u8 edid[1024]; +}; + #define VIRTIO_GPU_EVENT_DISPLAY (1 << 0) struct virtio_gpu_config { -- 2.9.3
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