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Commit 8eb8833e authored by Gerd Hoffmann's avatar Gerd Hoffmann
Browse files

drm/ttm: add gem base object 



Add drm_gem_object struct to ttm_buffer_object, so ttm objects are a gdm
object superclass.  Add a function to check whenever a given bo actually
uses the embedded drm_gem_object.

Signed-off-by: default avatarGerd Hoffmann <kraxel@redhat.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20190805140119.7337-2-kraxel@redhat.com
parent e7642f35

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