1 /* SPDX-License-Identifier: GPL-2.0 OR MIT */
2
3 #ifndef _TTM_RANGE_MANAGER_H_
4 #define _TTM_RANGE_MANAGER_H_
5
6 #include <drm/ttm/ttm_resource.h>
7 #include <drm/ttm/ttm_device.h>
8 #include <drm/drm_mm.h>
9
10 /**
11 * struct ttm_range_mgr_node
12 *
13 * @base: base clase we extend
14 * @mm_nodes: MM nodes, usually 1
15 *
16 * Extending the ttm_resource object to manage an address space allocation with
17 * one or more drm_mm_nodes.
18 */
19 struct ttm_range_mgr_node {
20 struct ttm_resource base;
21 struct drm_mm_node mm_nodes[];
22 };
23
24 /**
25 * to_ttm_range_mgr_node
26 *
27 * @res: the resource to upcast
28 *
29 * Upcast the ttm_resource object into a ttm_range_mgr_node object.
30 */
31 static inline struct ttm_range_mgr_node *
32 to_ttm_range_mgr_node(struct ttm_resource *res)
33 {
34 return container_of(res, struct ttm_range_mgr_node, base);
35 }
36
37 int ttm_range_man_init_nocheck(struct ttm_device *bdev,
38 unsigned type, bool use_tt,
39 unsigned long p_size);
40 int ttm_range_man_fini_nocheck(struct ttm_device *bdev,
41 unsigned type);
42 static __always_inline int ttm_range_man_init(struct ttm_device *bdev,
43 unsigned int type, bool use_tt,
44 unsigned long p_size)
45 {
46 BUILD_BUG_ON(__builtin_constant_p(type) && type >= TTM_NUM_MEM_TYPES);
47 return ttm_range_man_init_nocheck(bdev, type, use_tt, p_size);
48 }
49
50 static __always_inline int ttm_range_man_fini(struct ttm_device *bdev,
51 unsigned int type)
52 {
53 BUILD_BUG_ON(__builtin_constant_p(type) && type >= TTM_NUM_MEM_TYPES);
54 return ttm_range_man_fini_nocheck(bdev, type);
55 }
56 #endif
57
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