drm/virtio: implement context init: advertise feature to userspace

This advertises the context init feature to userspace, along with
a mask of supported capabilities.

Signed-off-by: Gurchetan Singh <gurchetansingh@chromium.org>
Acked-by: Lingfeng Yang <lfy@google.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20210921232024.817-13-gurchetansingh@chromium.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
index fdaa7f3..5618a1d 100644 (file)
--- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c
+++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
@@ -286,6 +286,12 @@ static int virtio_gpu_getparam_ioctl(struct drm_device *dev, void *data,
        case VIRTGPU_PARAM_CROSS_DEVICE:
                value = vgdev->has_resource_assign_uuid ? 1 : 0;
                break;
+       case VIRTGPU_PARAM_CONTEXT_INIT:
+               value = vgdev->has_context_init ? 1 : 0;
+               break;
+       case VIRTGPU_PARAM_SUPPORTED_CAPSET_IDs:
+               value = vgdev->capset_id_mask;
+               break;
        default:
                return -EINVAL;
        }