drm/apple: Align buffers to 16K page size

hoshinolina · marcan · commit 4bfb704293f8 · 2023-09-20T21:52:21.000+09:00
Signed-off-by: Asahi Lina &lt;lina@asahilina.net&gt;
diff --git a/drivers/gpu/drm/apple/apple_drv.c b/drivers/gpu/drm/apple/apple_drv.c
@@ -49,12 +49,14 @@ struct apple_drm_private {
 
 DEFINE_DRM_GEM_DMA_FOPS(apple_fops);
 
+#define DART_PAGE_SIZE 16384
+
 static int apple_drm_gem_dumb_create(struct drm_file *file_priv,
                             struct drm_device *drm,
                             struct drm_mode_create_dumb *args)
 {
         args->pitch = ALIGN(DIV_ROUND_UP(args->width * args->bpp, 8), 64);
-        args->size = args->pitch * args->height;
+        args->size = round_up(args->pitch * args->height, DART_PAGE_SIZE);
 
 	return drm_gem_dma_dumb_create_internal(file_priv, drm, args);
 }

Original file line number	Diff line number	Diff line change
`@@ -49,12 +49,14 @@ struct apple_drm_private {`
`49`	`49`
`50`	`50`	`DEFINE_DRM_GEM_DMA_FOPS(apple_fops);`
`51`	`51`
	`52`	`+#define DART_PAGE_SIZE 16384`
	`53`	`+`
`52`	`54`	`static int apple_drm_gem_dumb_create(struct drm_file *file_priv,`
`53`	`55`	`struct drm_device *drm,`
`54`	`56`	`struct drm_mode_create_dumb *args)`
`55`	`57`	`{`
`56`	`58`	`args->pitch = ALIGN(DIV_ROUND_UP(args->width * args->bpp, 8), 64);`
`57`		`- args->size = args->pitch * args->height;`
	`59`	`+ args->size = round_up(args->pitch * args->height, DART_PAGE_SIZE);`
`58`	`60`
`59`	`61`	`return drm_gem_dma_dumb_create_internal(file_priv, drm, args);`
`60`	`62`	`}`