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249d6048 JG |
1 | /************************************************************************** |
2 | * | |
3 | * Copyright 2006-2008 Tungsten Graphics, Inc., Cedar Park, TX. USA. | |
4 | * All Rights Reserved. | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a | |
7 | * copy of this software and associated documentation files (the | |
8 | * "Software"), to deal in the Software without restriction, including | |
9 | * without limitation the rights to use, copy, modify, merge, publish, | |
10 | * distribute, sub license, and/or sell copies of the Software, and to | |
11 | * permit persons to whom the Software is furnished to do so, subject to | |
12 | * the following conditions: | |
13 | * | |
14 | * The above copyright notice and this permission notice (including the | |
15 | * next paragraph) shall be included in all copies or substantial portions | |
16 | * of the Software. | |
17 | * | |
18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
20 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL | |
21 | * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, | |
22 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
23 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | |
24 | * USE OR OTHER DEALINGS IN THE SOFTWARE. | |
25 | * | |
26 | * | |
27 | **************************************************************************/ | |
28 | /* | |
29 | * Authors: | |
30 | * Thomas Hellstrom <thomas-at-tungstengraphics-dot-com> | |
31 | */ | |
32 | ||
33 | #ifndef _DRM_MM_H_ | |
34 | #define _DRM_MM_H_ | |
35 | ||
36 | /* | |
37 | * Generic range manager structs | |
38 | */ | |
39 | #include <linux/list.h> | |
f1938cd6 DA |
40 | #ifdef CONFIG_DEBUG_FS |
41 | #include <linux/seq_file.h> | |
42 | #endif | |
249d6048 JG |
43 | |
44 | struct drm_mm_node { | |
45 | struct list_head fl_entry; | |
46 | struct list_head ml_entry; | |
47 | int free; | |
48 | unsigned long start; | |
49 | unsigned long size; | |
50 | struct drm_mm *mm; | |
51 | void *private; | |
52 | }; | |
53 | ||
54 | struct drm_mm { | |
55 | struct list_head fl_entry; | |
56 | struct list_head ml_entry; | |
57 | struct list_head unused_nodes; | |
58 | int num_unused; | |
59 | spinlock_t unused_lock; | |
60 | }; | |
61 | ||
62 | /* | |
63 | * Basic range manager support (drm_mm.c) | |
64 | */ | |
89579f77 TH |
65 | extern struct drm_mm_node *drm_mm_get_block_generic(struct drm_mm_node *node, |
66 | unsigned long size, | |
67 | unsigned alignment, | |
68 | int atomic); | |
a2e68e92 JG |
69 | extern struct drm_mm_node *drm_mm_get_block_range_generic( |
70 | struct drm_mm_node *node, | |
71 | unsigned long size, | |
72 | unsigned alignment, | |
73 | unsigned long start, | |
74 | unsigned long end, | |
75 | int atomic); | |
89579f77 | 76 | static inline struct drm_mm_node *drm_mm_get_block(struct drm_mm_node *parent, |
249d6048 | 77 | unsigned long size, |
89579f77 TH |
78 | unsigned alignment) |
79 | { | |
80 | return drm_mm_get_block_generic(parent, size, alignment, 0); | |
81 | } | |
82 | static inline struct drm_mm_node *drm_mm_get_block_atomic(struct drm_mm_node *parent, | |
83 | unsigned long size, | |
84 | unsigned alignment) | |
85 | { | |
86 | return drm_mm_get_block_generic(parent, size, alignment, 1); | |
87 | } | |
a2e68e92 JG |
88 | static inline struct drm_mm_node *drm_mm_get_block_range( |
89 | struct drm_mm_node *parent, | |
90 | unsigned long size, | |
91 | unsigned alignment, | |
92 | unsigned long start, | |
93 | unsigned long end) | |
94 | { | |
95 | return drm_mm_get_block_range_generic(parent, size, alignment, | |
96 | start, end, 0); | |
97 | } | |
98 | static inline struct drm_mm_node *drm_mm_get_block_atomic_range( | |
99 | struct drm_mm_node *parent, | |
100 | unsigned long size, | |
101 | unsigned alignment, | |
102 | unsigned long start, | |
103 | unsigned long end) | |
104 | { | |
105 | return drm_mm_get_block_range_generic(parent, size, alignment, | |
106 | start, end, 1); | |
107 | } | |
249d6048 JG |
108 | extern void drm_mm_put_block(struct drm_mm_node *cur); |
109 | extern struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm, | |
110 | unsigned long size, | |
111 | unsigned alignment, | |
112 | int best_match); | |
a2e68e92 JG |
113 | extern struct drm_mm_node *drm_mm_search_free_in_range( |
114 | const struct drm_mm *mm, | |
115 | unsigned long size, | |
116 | unsigned alignment, | |
117 | unsigned long start, | |
118 | unsigned long end, | |
119 | int best_match); | |
249d6048 JG |
120 | extern int drm_mm_init(struct drm_mm *mm, unsigned long start, |
121 | unsigned long size); | |
122 | extern void drm_mm_takedown(struct drm_mm *mm); | |
123 | extern int drm_mm_clean(struct drm_mm *mm); | |
124 | extern unsigned long drm_mm_tail_space(struct drm_mm *mm); | |
125 | extern int drm_mm_remove_space_from_tail(struct drm_mm *mm, | |
126 | unsigned long size); | |
127 | extern int drm_mm_add_space_to_tail(struct drm_mm *mm, | |
128 | unsigned long size, int atomic); | |
129 | extern int drm_mm_pre_get(struct drm_mm *mm); | |
130 | ||
131 | static inline struct drm_mm *drm_get_mm(struct drm_mm_node *block) | |
132 | { | |
133 | return block->mm; | |
134 | } | |
135 | ||
99d7e48e | 136 | extern void drm_mm_debug_table(struct drm_mm *mm, const char *prefix); |
fa8a1238 DA |
137 | #ifdef CONFIG_DEBUG_FS |
138 | int drm_mm_dump_table(struct seq_file *m, struct drm_mm *mm); | |
139 | #endif | |
140 | ||
249d6048 | 141 | #endif |