gma500: allow the creation of 'stolen' memory objects (7d7b7adf) · Commits · 戴 / test

drivers/staging/gma500/gem.c

+24 −0

Original line number	Diff line number	Diff line
		@@ -251,6 +251,21 @@ fail:
		}
		}

		static int psb_gem_create_stolen(struct drm_file file, struct drm_device dev,
		int size, u32 *handle)
		{
		struct gtt_range *gtt = psb_gtt_alloc_range(dev, size, "gem", 1);
		if (gtt == NULL)
		return -ENOMEM;
		if (drm_gem_private_object_init(dev, &gtt->gem, size) != 0)
		goto free_gtt;
		if (drm_gem_handle_create(file, &gtt->gem, handle) == 0)
		return 0;
		free_gtt:
		psb_gtt_free_range(dev, gtt);
		return -ENOMEM;
		}

		/*
		* GEM interfaces for our specific client
		*/
		@@ -258,6 +273,15 @@ int psb_gem_create_ioctl(struct drm_device dev, void data,
		struct drm_file *file)
		{
		struct drm_psb_gem_create *args = data;
		int ret;
		if (args->flags & PSB_GEM_CREATE_STOLEN) {
		ret = psb_gem_create_stolen(file, dev, args->size,
		&args->handle);
		if (ret == 0)
		return 0;
		/* Fall throguh */
		args->flags &= ~PSB_GEM_CREATE_STOLEN;
		}
		return psb_gem_create(file, dev, args->size, &args->handle);
		}

+2 −1

Original line number	Diff line number	Diff line
		@@ -189,7 +189,8 @@ struct psb_drm_dpu_rect {
		struct drm_psb_gem_create {
		__u64 size;
		__u32 handle;
		__u32 pad;
		__u32 flags;
		#define PSB_GEM_CREATE_STOLEN 1 /* Stolen memory can be used */
		};

		#define PSB_2D_OP_BUFLEN 16