#ifndef _TTM_BO_API_H_
#define _TTM_BO_API_H_
+#include <drm/drm_gem.h>
#include <drm/drm_hashtab.h>
#include <drm/drm_vma_manager.h>
#include <linux/kref.h>
/**
* struct ttm_buffer_object
*
+ * @base: drm_gem_object superclass data.
* @bdev: Pointer to the buffer object device structure.
* @type: The bo type.
* @destroy: Destruction function. If NULL, kfree is used.
*/
struct ttm_buffer_object {
+ struct drm_gem_object base;
+
/**
* Members constant at init.
*/
struct ttm_operation_ctx *ctx);
void ttm_bo_swapout_all(struct ttm_bo_device *bdev);
int ttm_bo_wait_unreserved(struct ttm_buffer_object *bo);
+
+/**
+ * ttm_bo_uses_embedded_gem_object - check if the given bo uses the
+ * embedded drm_gem_object.
+ *
+ * Most ttm drivers are using gem too, so the embedded
+ * ttm_buffer_object.base will be initialized by the driver (before
+ * calling ttm_bo_init). It is also possible to use ttm without gem
+ * though (vmwgfx does that).
+ *
+ * This helper will figure whenever a given ttm bo is a gem object too
+ * or not.
+ *
+ * @bo: The bo to check.
+ */
+static inline bool ttm_bo_uses_embedded_gem_object(struct ttm_buffer_object *bo)
+{
+ return bo->base.dev != NULL;
+}
#endif