virtio-gpu: add 3d/virgl support

Add the bits needed for opengl rendering support: query
capabilities, new virtio commands, drm ioctls.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

drivers/gpu/drm/virtio/virtgpu_drv.c

@@ -73,6 +73,14 @@ static struct virtio_device_id id_table[] = {
 };
 
 static unsigned int features[] = {
+#ifdef __LITTLE_ENDIAN
+	/*
+	 * Gallium command stream send by virgl is native endian.
+	 * Because of that we only support little endian guests on
+	 * little endian hosts.
+	 */
+	VIRTIO_GPU_F_VIRGL,
+#endif
 };
 static struct virtio_driver virtio_gpu_driver = {
 	.feature_table = features,
@@ -114,6 +122,8 @@ static struct drm_driver driver = {
 	.set_busid = drm_virtio_set_busid,
 	.load = virtio_gpu_driver_load,
 	.unload = virtio_gpu_driver_unload,
+	.open = virtio_gpu_driver_open,
+	.postclose = virtio_gpu_driver_postclose,
 
 	.dumb_create = virtio_gpu_mode_dumb_create,
 	.dumb_map_offset = virtio_gpu_mode_dumb_mmap,
@@ -125,8 +135,13 @@ static struct drm_driver driver = {
 #endif
 
 	.gem_free_object = virtio_gpu_gem_free_object,
+	.gem_open_object = virtio_gpu_gem_object_open,
+	.gem_close_object = virtio_gpu_gem_object_close,
 	.fops = &virtio_gpu_driver_fops,
 
+	.ioctls = virtio_gpu_ioctls,
+	.num_ioctls = DRM_VIRTIO_NUM_IOCTLS,
+
 	.name = DRIVER_NAME,
 	.desc = DRIVER_DESC,
 	.date = DRIVER_DATE,