}
EXPORT_SYMBOL(drm_gem_vram_unpin);
-static int drm_gem_vram_kmap_locked(struct drm_gem_vram_object *gbo,
- struct iosys_map *map)
+/**
+ * drm_gem_vram_vmap() - Pins and maps a GEM VRAM object into kernel address
+ * space
+ * @gbo: The GEM VRAM object to map
+ * @map: Returns the kernel virtual address of the VRAM GEM object's backing
+ * store.
+ *
+ * The vmap function pins a GEM VRAM object to its current location, either
+ * system or video memory, and maps its buffer into kernel address space.
+ * As pinned object cannot be relocated, you should avoid pinning objects
+ * permanently. Call drm_gem_vram_vunmap() with the returned address to
+ * unmap and unpin the GEM VRAM object.
+ *
+ * Returns:
+ * 0 on success, or a negative error code otherwise.
+ */
+int drm_gem_vram_vmap(struct drm_gem_vram_object *gbo, struct iosys_map *map)
{
int ret;
+ dma_resv_assert_held(gbo->bo.base.resv);
+
if (gbo->vmap_use_count > 0)
goto out;
return 0;
}
+EXPORT_SYMBOL(drm_gem_vram_vmap);
-static void drm_gem_vram_kunmap_locked(struct drm_gem_vram_object *gbo,
- struct iosys_map *map)
+/**
+ * drm_gem_vram_vunmap() - Unmaps and unpins a GEM VRAM object
+ * @gbo: The GEM VRAM object to unmap
+ * @map: Kernel virtual address where the VRAM GEM object was mapped
+ *
+ * A call to drm_gem_vram_vunmap() unmaps and unpins a GEM VRAM buffer. See
+ * the documentation for drm_gem_vram_vmap() for more information.
+ */
+void drm_gem_vram_vunmap(struct drm_gem_vram_object *gbo,
+ struct iosys_map *map)
{
struct drm_device *dev = gbo->bo.base.dev;
+ dma_resv_assert_held(gbo->bo.base.resv);
+
if (drm_WARN_ON_ONCE(dev, !gbo->vmap_use_count))
return;
* from memory. See drm_gem_vram_bo_driver_move_notify().
*/
}
-
-/**
- * drm_gem_vram_vmap() - Pins and maps a GEM VRAM object into kernel address
- * space
- * @gbo: The GEM VRAM object to map
- * @map: Returns the kernel virtual address of the VRAM GEM object's backing
- * store.
- *
- * The vmap function pins a GEM VRAM object to its current location, either
- * system or video memory, and maps its buffer into kernel address space.
- * As pinned object cannot be relocated, you should avoid pinning objects
- * permanently. Call drm_gem_vram_vunmap() with the returned address to
- * unmap and unpin the GEM VRAM object.
- *
- * Returns:
- * 0 on success, or a negative error code otherwise.
- */
-int drm_gem_vram_vmap(struct drm_gem_vram_object *gbo, struct iosys_map *map)
-{
- int ret;
-
- dma_resv_assert_held(gbo->bo.base.resv);
-
- ret = drm_gem_vram_pin_locked(gbo, 0);
- if (ret)
- return ret;
- ret = drm_gem_vram_kmap_locked(gbo, map);
- if (ret)
- goto err_drm_gem_vram_unpin_locked;
-
- return 0;
-
-err_drm_gem_vram_unpin_locked:
- drm_gem_vram_unpin_locked(gbo);
- return ret;
-}
-EXPORT_SYMBOL(drm_gem_vram_vmap);
-
-/**
- * drm_gem_vram_vunmap() - Unmaps and unpins a GEM VRAM object
- * @gbo: The GEM VRAM object to unmap
- * @map: Kernel virtual address where the VRAM GEM object was mapped
- *
- * A call to drm_gem_vram_vunmap() unmaps and unpins a GEM VRAM buffer. See
- * the documentation for drm_gem_vram_vmap() for more information.
- */
-void drm_gem_vram_vunmap(struct drm_gem_vram_object *gbo,
- struct iosys_map *map)
-{
- dma_resv_assert_held(gbo->bo.base.resv);
-
- drm_gem_vram_kunmap_locked(gbo, map);
- drm_gem_vram_unpin_locked(gbo);
-}
EXPORT_SYMBOL(drm_gem_vram_vunmap);
/**