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authorGerd Hoffmann <kraxel@redhat.com>2019-08-05 16:01:03 +0200
committerGerd Hoffmann <kraxel@redhat.com>2019-08-06 08:21:53 +0200
commit8eb8833e7ed362977c021116d2f34451a7009ca3 (patch)
tree2a82f703f978a4611e35955a83da4f5b04767b09 /include/drm
parente7642f35851da14b78be7a38b0bb0d4068254859 (diff)
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: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Christian König <christian.koenig@amd.com> Link: http://patchwork.freedesktop.org/patch/msgid/20190805140119.7337-2-kraxel@redhat.com
Diffstat (limited to 'include/drm')
-rw-r--r--include/drm/ttm/ttm_bo_api.h23
1 files changed, 23 insertions, 0 deletions
diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h
index 49d9cdfc58f2..082550cac92c 100644
--- a/include/drm/ttm/ttm_bo_api.h
+++ b/include/drm/ttm/ttm_bo_api.h
@@ -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