1/* SPDX-License-Identifier: GPL-2.0 OR MIT */
2
3#include <drm/ttm/ttm_resource.h>
4#include <drm/ttm/ttm_device.h>
5#include <drm/ttm/ttm_placement.h>
6#include <linux/slab.h>
7
8#include "ttm_module.h"
9
10static int ttm_sys_man_alloc(struct ttm_resource_manager *man,
11 struct ttm_buffer_object *bo,
12 const struct ttm_place *place,
13 struct ttm_resource **res)
14{
15 *res = kzalloc(sizeof(**res), GFP_KERNEL);
16 if (!*res)
17 return -ENOMEM;
18
19 ttm_resource_init(bo, place, res: *res);
20 return 0;
21}
22
23static void ttm_sys_man_free(struct ttm_resource_manager *man,
24 struct ttm_resource *res)
25{
26 ttm_resource_fini(man, res);
27 kfree(objp: res);
28}
29
30static const struct ttm_resource_manager_func ttm_sys_manager_func = {
31 .alloc = ttm_sys_man_alloc,
32 .free = ttm_sys_man_free,
33};
34
35void ttm_sys_man_init(struct ttm_device *bdev)
36{
37 struct ttm_resource_manager *man = &bdev->sysman;
38
39 /*
40 * Initialize the system memory buffer type.
41 * Other types need to be driver / IOCTL initialized.
42 */
43 man->use_tt = true;
44 man->func = &ttm_sys_manager_func;
45
46 ttm_resource_manager_init(man, bdev, size: 0);
47 ttm_set_driver_manager(bdev, TTM_PL_SYSTEM, manager: man);
48 ttm_resource_manager_set_used(man, used: true);
49}
50

source code of linux/drivers/gpu/drm/ttm/ttm_sys_manager.c