1 files changed, 49 insertions, 0 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_sys_manager.c b/drivers/gpu/drm/ttm/ttm_sys_manager.c
new file mode 100644
index 000000000..2ced16951
--- /dev/null
+++ b/drivers/gpu/drm/ttm/ttm_sys_manager.c
@@ -0,0 +1,49 @@
+/* SPDX-License-Identifier: GPL-2.0 OR MIT */
+
+#include <drm/ttm/ttm_resource.h>
+#include <drm/ttm/ttm_device.h>
+#include <drm/ttm/ttm_placement.h>
+#include <linux/slab.h>
+
+#include "ttm_module.h"
+
+static int ttm_sys_man_alloc(struct ttm_resource_manager *man,
+			     struct ttm_buffer_object *bo,
+			     const struct ttm_place *place,
+			     struct ttm_resource **res)
+{
+	*res = kzalloc(sizeof(**res), GFP_KERNEL);
+	if (!*res)
+		return -ENOMEM;
+
+	ttm_resource_init(bo, place, *res);
+	return 0;
+}
+
+static void ttm_sys_man_free(struct ttm_resource_manager *man,
+			     struct ttm_resource *res)
+{
+	ttm_resource_fini(man, res);
+	kfree(res);
+}
+
+static const struct ttm_resource_manager_func ttm_sys_manager_func = {
+	.alloc = ttm_sys_man_alloc,
+	.free = ttm_sys_man_free,
+};
+
+void ttm_sys_man_init(struct ttm_device *bdev)
+{
+	struct ttm_resource_manager *man = &bdev->sysman;
+
+	/*
+	 * Initialize the system memory buffer type.
+	 * Other types need to be driver / IOCTL initialized.
+	 */
+	man->use_tt = true;
+	man->func = &ttm_sys_manager_func;
+
+	ttm_resource_manager_init(man, bdev, 0);
+	ttm_set_driver_manager(bdev, TTM_PL_SYSTEM, man);
+	ttm_resource_manager_set_used(man, true);
+}