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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 { | |
d1024ce9 | 45 | struct list_head node_list; |
ea7b1dd4 DV |
46 | struct list_head hole_stack; |
47 | unsigned hole_follows : 1; | |
709ea971 DV |
48 | unsigned scanned_block : 1; |
49 | unsigned scanned_prev_free : 1; | |
50 | unsigned scanned_next_free : 1; | |
ea7b1dd4 | 51 | unsigned scanned_preceeds_hole : 1; |
b0b7af18 | 52 | unsigned allocated : 1; |
6b9d89b4 | 53 | unsigned long color; |
249d6048 JG |
54 | unsigned long start; |
55 | unsigned long size; | |
56 | struct drm_mm *mm; | |
249d6048 JG |
57 | }; |
58 | ||
59 | struct drm_mm { | |
25985edc | 60 | /* List of all memory nodes that immediately precede a free hole. */ |
ea7b1dd4 DV |
61 | struct list_head hole_stack; |
62 | /* head_node.node_list is the list of all memory nodes, ordered | |
63 | * according to the (increasing) start address of the memory node. */ | |
64 | struct drm_mm_node head_node; | |
249d6048 JG |
65 | struct list_head unused_nodes; |
66 | int num_unused; | |
67 | spinlock_t unused_lock; | |
d935cc61 | 68 | unsigned int scan_check_range : 1; |
709ea971 | 69 | unsigned scan_alignment; |
6b9d89b4 | 70 | unsigned long scan_color; |
709ea971 DV |
71 | unsigned long scan_size; |
72 | unsigned long scan_hit_start; | |
901593f2 | 73 | unsigned long scan_hit_end; |
709ea971 | 74 | unsigned scanned_blocks; |
d935cc61 DV |
75 | unsigned long scan_start; |
76 | unsigned long scan_end; | |
ae0cec28 | 77 | struct drm_mm_node *prev_scanned_node; |
6b9d89b4 CW |
78 | |
79 | void (*color_adjust)(struct drm_mm_node *node, unsigned long color, | |
80 | unsigned long *start, unsigned long *end); | |
249d6048 JG |
81 | }; |
82 | ||
b0b7af18 DV |
83 | static inline bool drm_mm_node_allocated(struct drm_mm_node *node) |
84 | { | |
85 | return node->allocated; | |
86 | } | |
87 | ||
31a5b8ce DV |
88 | static inline bool drm_mm_initialized(struct drm_mm *mm) |
89 | { | |
ea7b1dd4 | 90 | return mm->hole_stack.next; |
31a5b8ce | 91 | } |
ea7b1dd4 DV |
92 | #define drm_mm_for_each_node(entry, mm) list_for_each_entry(entry, \ |
93 | &(mm)->head_node.node_list, \ | |
2bbd4492 | 94 | node_list) |
ae0cec28 DV |
95 | #define drm_mm_for_each_scanned_node_reverse(entry, n, mm) \ |
96 | for (entry = (mm)->prev_scanned_node, \ | |
97 | next = entry ? list_entry(entry->node_list.next, \ | |
98 | struct drm_mm_node, node_list) : NULL; \ | |
99 | entry != NULL; entry = next, \ | |
100 | next = entry ? list_entry(entry->node_list.next, \ | |
101 | struct drm_mm_node, node_list) : NULL) \ | |
249d6048 JG |
102 | /* |
103 | * Basic range manager support (drm_mm.c) | |
104 | */ | |
89579f77 TH |
105 | extern struct drm_mm_node *drm_mm_get_block_generic(struct drm_mm_node *node, |
106 | unsigned long size, | |
107 | unsigned alignment, | |
6b9d89b4 | 108 | unsigned long color, |
89579f77 | 109 | int atomic); |
a2e68e92 JG |
110 | extern struct drm_mm_node *drm_mm_get_block_range_generic( |
111 | struct drm_mm_node *node, | |
112 | unsigned long size, | |
113 | unsigned alignment, | |
6b9d89b4 | 114 | unsigned long color, |
a2e68e92 JG |
115 | unsigned long start, |
116 | unsigned long end, | |
117 | int atomic); | |
89579f77 | 118 | static inline struct drm_mm_node *drm_mm_get_block(struct drm_mm_node *parent, |
249d6048 | 119 | unsigned long size, |
89579f77 TH |
120 | unsigned alignment) |
121 | { | |
6b9d89b4 | 122 | return drm_mm_get_block_generic(parent, size, alignment, 0, 0); |
89579f77 TH |
123 | } |
124 | static inline struct drm_mm_node *drm_mm_get_block_atomic(struct drm_mm_node *parent, | |
125 | unsigned long size, | |
126 | unsigned alignment) | |
127 | { | |
6b9d89b4 | 128 | return drm_mm_get_block_generic(parent, size, alignment, 0, 1); |
89579f77 | 129 | } |
a2e68e92 JG |
130 | static inline struct drm_mm_node *drm_mm_get_block_range( |
131 | struct drm_mm_node *parent, | |
132 | unsigned long size, | |
133 | unsigned alignment, | |
134 | unsigned long start, | |
135 | unsigned long end) | |
136 | { | |
6b9d89b4 CW |
137 | return drm_mm_get_block_range_generic(parent, size, alignment, 0, |
138 | start, end, 0); | |
139 | } | |
140 | static inline struct drm_mm_node *drm_mm_get_color_block_range( | |
141 | struct drm_mm_node *parent, | |
142 | unsigned long size, | |
143 | unsigned alignment, | |
144 | unsigned long color, | |
145 | unsigned long start, | |
146 | unsigned long end) | |
147 | { | |
148 | return drm_mm_get_block_range_generic(parent, size, alignment, color, | |
149 | start, end, 0); | |
a2e68e92 JG |
150 | } |
151 | static inline struct drm_mm_node *drm_mm_get_block_atomic_range( | |
152 | struct drm_mm_node *parent, | |
153 | unsigned long size, | |
154 | unsigned alignment, | |
155 | unsigned long start, | |
156 | unsigned long end) | |
157 | { | |
6b9d89b4 | 158 | return drm_mm_get_block_range_generic(parent, size, alignment, 0, |
a2e68e92 JG |
159 | start, end, 1); |
160 | } | |
b8103450 CW |
161 | |
162 | extern int drm_mm_insert_node(struct drm_mm *mm, | |
163 | struct drm_mm_node *node, | |
164 | unsigned long size, | |
165 | unsigned alignment); | |
b0b7af18 DV |
166 | extern int drm_mm_insert_node_in_range(struct drm_mm *mm, |
167 | struct drm_mm_node *node, | |
b8103450 CW |
168 | unsigned long size, |
169 | unsigned alignment, | |
170 | unsigned long start, | |
171 | unsigned long end); | |
172 | extern int drm_mm_insert_node_generic(struct drm_mm *mm, | |
173 | struct drm_mm_node *node, | |
174 | unsigned long size, | |
175 | unsigned alignment, | |
176 | unsigned long color); | |
177 | extern int drm_mm_insert_node_in_range_generic(struct drm_mm *mm, | |
178 | struct drm_mm_node *node, | |
179 | unsigned long size, | |
180 | unsigned alignment, | |
181 | unsigned long color, | |
182 | unsigned long start, | |
183 | unsigned long end); | |
249d6048 | 184 | extern void drm_mm_put_block(struct drm_mm_node *cur); |
b0b7af18 DV |
185 | extern void drm_mm_remove_node(struct drm_mm_node *node); |
186 | extern void drm_mm_replace_node(struct drm_mm_node *old, struct drm_mm_node *new); | |
6b9d89b4 CW |
187 | extern struct drm_mm_node *drm_mm_search_free_generic(const struct drm_mm *mm, |
188 | unsigned long size, | |
189 | unsigned alignment, | |
190 | unsigned long color, | |
191 | bool best_match); | |
192 | extern struct drm_mm_node *drm_mm_search_free_in_range_generic( | |
193 | const struct drm_mm *mm, | |
194 | unsigned long size, | |
195 | unsigned alignment, | |
196 | unsigned long color, | |
197 | unsigned long start, | |
198 | unsigned long end, | |
199 | bool best_match); | |
200 | static inline struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm, | |
201 | unsigned long size, | |
202 | unsigned alignment, | |
203 | bool best_match) | |
204 | { | |
205 | return drm_mm_search_free_generic(mm,size, alignment, 0, best_match); | |
206 | } | |
207 | static inline struct drm_mm_node *drm_mm_search_free_in_range( | |
a2e68e92 JG |
208 | const struct drm_mm *mm, |
209 | unsigned long size, | |
210 | unsigned alignment, | |
211 | unsigned long start, | |
212 | unsigned long end, | |
6b9d89b4 CW |
213 | bool best_match) |
214 | { | |
215 | return drm_mm_search_free_in_range_generic(mm, size, alignment, 0, | |
216 | start, end, best_match); | |
217 | } | |
218 | static inline struct drm_mm_node *drm_mm_search_free_color(const struct drm_mm *mm, | |
219 | unsigned long size, | |
220 | unsigned alignment, | |
221 | unsigned long color, | |
222 | bool best_match) | |
223 | { | |
224 | return drm_mm_search_free_generic(mm,size, alignment, color, best_match); | |
225 | } | |
226 | static inline struct drm_mm_node *drm_mm_search_free_in_range_color( | |
227 | const struct drm_mm *mm, | |
228 | unsigned long size, | |
229 | unsigned alignment, | |
230 | unsigned long color, | |
231 | unsigned long start, | |
232 | unsigned long end, | |
233 | bool best_match) | |
234 | { | |
235 | return drm_mm_search_free_in_range_generic(mm, size, alignment, color, | |
236 | start, end, best_match); | |
237 | } | |
238 | extern int drm_mm_init(struct drm_mm *mm, | |
239 | unsigned long start, | |
249d6048 JG |
240 | unsigned long size); |
241 | extern void drm_mm_takedown(struct drm_mm *mm); | |
242 | extern int drm_mm_clean(struct drm_mm *mm); | |
249d6048 JG |
243 | extern int drm_mm_pre_get(struct drm_mm *mm); |
244 | ||
245 | static inline struct drm_mm *drm_get_mm(struct drm_mm_node *block) | |
246 | { | |
247 | return block->mm; | |
248 | } | |
249 | ||
6b9d89b4 CW |
250 | void drm_mm_init_scan(struct drm_mm *mm, |
251 | unsigned long size, | |
252 | unsigned alignment, | |
253 | unsigned long color); | |
254 | void drm_mm_init_scan_with_range(struct drm_mm *mm, | |
255 | unsigned long size, | |
d935cc61 | 256 | unsigned alignment, |
6b9d89b4 | 257 | unsigned long color, |
d935cc61 DV |
258 | unsigned long start, |
259 | unsigned long end); | |
709ea971 DV |
260 | int drm_mm_scan_add_block(struct drm_mm_node *node); |
261 | int drm_mm_scan_remove_block(struct drm_mm_node *node); | |
262 | ||
99d7e48e | 263 | extern void drm_mm_debug_table(struct drm_mm *mm, const char *prefix); |
fa8a1238 DA |
264 | #ifdef CONFIG_DEBUG_FS |
265 | int drm_mm_dump_table(struct seq_file *m, struct drm_mm *mm); | |
266 | #endif | |
267 | ||
249d6048 | 268 | #endif |