drm/ttm: add gem base object (8eb8833e) · Commits · 戴 / test

include/drm/ttm/ttm_bo_api.h

+23 −0

Original line number	Diff line number	Diff line
		@@ -31,6 +31,7 @@
		#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>
		@@ -127,6 +128,7 @@ struct ttm_tt;
		/**
		* 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.
		@@ -169,6 +171,8 @@ struct ttm_tt;
		*/

		struct ttm_buffer_object {
		struct drm_gem_object base;

		/**
		* Members constant at init.
		*/
		@@ -768,4 +772,23 @@ int ttm_bo_swapout(struct ttm_bo_global *glob,
		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