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1408 | serge | 1 | /************************************************************************** |
2 | * |
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3 | * Copyright 2006-2008 Tungsten Graphics, Inc., Cedar Park, TX. USA. |
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4 | * All Rights Reserved. |
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5 | * |
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6 | * Permission is hereby granted, free of charge, to any person obtaining a |
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7 | * copy of this software and associated documentation files (the |
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8 | * "Software"), to deal in the Software without restriction, including |
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9 | * without limitation the rights to use, copy, modify, merge, publish, |
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10 | * distribute, sub license, and/or sell copies of the Software, and to |
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11 | * permit persons to whom the Software is furnished to do so, subject to |
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12 | * the following conditions: |
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13 | * |
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14 | * The above copyright notice and this permission notice (including the |
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15 | * next paragraph) shall be included in all copies or substantial portions |
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16 | * of the Software. |
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17 | * |
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18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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20 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
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21 | * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, |
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22 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
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23 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
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24 | * USE OR OTHER DEALINGS IN THE SOFTWARE. |
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25 | * |
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26 | * |
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27 | **************************************************************************/ |
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28 | /* |
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29 | * Authors: |
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30 | * Thomas Hellstrom |
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31 | */ |
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32 | |||
33 | #ifndef _DRM_MM_H_ |
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34 | #define _DRM_MM_H_ |
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35 | |||
36 | /* |
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37 | * Generic range manager structs |
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38 | */ |
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39 | #include |
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40 | #ifdef CONFIG_DEBUG_FS |
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41 | #include |
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42 | #endif |
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43 | |||
44 | struct drm_mm_node { |
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1964 | serge | 45 | struct list_head node_list; |
46 | struct list_head hole_stack; |
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47 | unsigned hole_follows : 1; |
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48 | unsigned scanned_block : 1; |
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49 | unsigned scanned_prev_free : 1; |
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50 | unsigned scanned_next_free : 1; |
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51 | unsigned scanned_preceeds_hole : 1; |
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52 | unsigned allocated : 1; |
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3031 | serge | 53 | unsigned long color; |
1408 | serge | 54 | unsigned long start; |
55 | unsigned long size; |
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56 | struct drm_mm *mm; |
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57 | }; |
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58 | |||
59 | struct drm_mm { |
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1964 | serge | 60 | /* List of all memory nodes that immediately precede a free hole. */ |
61 | struct list_head hole_stack; |
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62 | /* head_node.node_list is the list of all memory nodes, ordered |
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63 | * according to the (increasing) start address of the memory node. */ |
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64 | struct drm_mm_node head_node; |
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1408 | serge | 65 | struct list_head unused_nodes; |
66 | int num_unused; |
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1964 | serge | 67 | spinlock_t unused_lock; |
68 | unsigned int scan_check_range : 1; |
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69 | unsigned scan_alignment; |
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3031 | serge | 70 | unsigned long scan_color; |
1964 | serge | 71 | unsigned long scan_size; |
72 | unsigned long scan_hit_start; |
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3192 | Serge | 73 | unsigned long scan_hit_end; |
1964 | serge | 74 | unsigned scanned_blocks; |
75 | unsigned long scan_start; |
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76 | unsigned long scan_end; |
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77 | struct drm_mm_node *prev_scanned_node; |
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3031 | serge | 78 | |
79 | void (*color_adjust)(struct drm_mm_node *node, unsigned long color, |
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80 | unsigned long *start, unsigned long *end); |
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1408 | serge | 81 | }; |
82 | |||
1964 | serge | 83 | static inline bool drm_mm_node_allocated(struct drm_mm_node *node) |
84 | { |
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85 | return node->allocated; |
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86 | } |
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87 | |||
88 | static inline bool drm_mm_initialized(struct drm_mm *mm) |
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89 | { |
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90 | return mm->hole_stack.next; |
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91 | } |
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92 | #define drm_mm_for_each_node(entry, mm) list_for_each_entry(entry, \ |
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93 | &(mm)->head_node.node_list, \ |
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94 | node_list) |
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95 | #define drm_mm_for_each_scanned_node_reverse(entry, n, mm) \ |
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96 | for (entry = (mm)->prev_scanned_node, \ |
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97 | next = entry ? list_entry(entry->node_list.next, \ |
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98 | struct drm_mm_node, node_list) : NULL; \ |
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99 | entry != NULL; entry = next, \ |
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100 | next = entry ? list_entry(entry->node_list.next, \ |
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101 | struct drm_mm_node, node_list) : NULL) \ |
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1408 | serge | 102 | /* |
103 | * Basic range manager support (drm_mm.c) |
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104 | */ |
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105 | extern struct drm_mm_node *drm_mm_get_block_generic(struct drm_mm_node *node, |
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106 | unsigned long size, |
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107 | unsigned alignment, |
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3031 | serge | 108 | unsigned long color, |
1408 | serge | 109 | int atomic); |
110 | extern struct drm_mm_node *drm_mm_get_block_range_generic( |
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111 | struct drm_mm_node *node, |
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112 | unsigned long size, |
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113 | unsigned alignment, |
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3031 | serge | 114 | unsigned long color, |
1408 | serge | 115 | unsigned long start, |
116 | unsigned long end, |
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117 | int atomic); |
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118 | static inline struct drm_mm_node *drm_mm_get_block(struct drm_mm_node *parent, |
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119 | unsigned long size, |
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120 | unsigned alignment) |
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121 | { |
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3031 | serge | 122 | return drm_mm_get_block_generic(parent, size, alignment, 0, 0); |
1408 | serge | 123 | } |
124 | static inline struct drm_mm_node *drm_mm_get_block_atomic(struct drm_mm_node *parent, |
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125 | unsigned long size, |
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126 | unsigned alignment) |
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127 | { |
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3031 | serge | 128 | return drm_mm_get_block_generic(parent, size, alignment, 0, 1); |
1408 | serge | 129 | } |
130 | static inline struct drm_mm_node *drm_mm_get_block_range( |
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131 | struct drm_mm_node *parent, |
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132 | unsigned long size, |
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133 | unsigned alignment, |
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134 | unsigned long start, |
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135 | unsigned long end) |
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136 | { |
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3031 | serge | 137 | return drm_mm_get_block_range_generic(parent, size, alignment, 0, |
138 | start, end, 0); |
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139 | } |
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140 | static inline struct drm_mm_node *drm_mm_get_color_block_range( |
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141 | struct drm_mm_node *parent, |
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142 | unsigned long size, |
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143 | unsigned alignment, |
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144 | unsigned long color, |
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145 | unsigned long start, |
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146 | unsigned long end) |
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147 | { |
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148 | return drm_mm_get_block_range_generic(parent, size, alignment, color, |
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1408 | serge | 149 | start, end, 0); |
150 | } |
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151 | static inline struct drm_mm_node *drm_mm_get_block_atomic_range( |
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152 | struct drm_mm_node *parent, |
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153 | unsigned long size, |
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154 | unsigned alignment, |
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155 | unsigned long start, |
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156 | unsigned long end) |
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157 | { |
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3031 | serge | 158 | return drm_mm_get_block_range_generic(parent, size, alignment, 0, |
1408 | serge | 159 | start, end, 1); |
160 | } |
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3192 | Serge | 161 | |
162 | extern int drm_mm_insert_node(struct drm_mm *mm, |
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163 | struct drm_mm_node *node, |
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164 | unsigned long size, |
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165 | unsigned alignment); |
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1964 | serge | 166 | extern int drm_mm_insert_node_in_range(struct drm_mm *mm, |
167 | struct drm_mm_node *node, |
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3192 | Serge | 168 | unsigned long size, |
169 | unsigned alignment, |
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170 | unsigned long start, |
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171 | unsigned long end); |
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172 | extern int drm_mm_insert_node_generic(struct drm_mm *mm, |
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173 | struct drm_mm_node *node, |
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174 | unsigned long size, |
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175 | unsigned alignment, |
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176 | unsigned long color); |
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177 | extern int drm_mm_insert_node_in_range_generic(struct drm_mm *mm, |
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178 | struct drm_mm_node *node, |
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179 | unsigned long size, |
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180 | unsigned alignment, |
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181 | unsigned long color, |
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182 | unsigned long start, |
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183 | unsigned long end); |
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1408 | serge | 184 | extern void drm_mm_put_block(struct drm_mm_node *cur); |
1964 | serge | 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); |
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3031 | serge | 187 | extern struct drm_mm_node *drm_mm_search_free_generic(const struct drm_mm *mm, |
1408 | serge | 188 | unsigned long size, |
189 | unsigned alignment, |
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3031 | serge | 190 | unsigned long color, |
191 | bool best_match); |
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192 | extern struct drm_mm_node *drm_mm_search_free_in_range_generic( |
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1408 | serge | 193 | const struct drm_mm *mm, |
194 | unsigned long size, |
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195 | unsigned alignment, |
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3031 | serge | 196 | unsigned long color, |
1408 | serge | 197 | unsigned long start, |
198 | unsigned long end, |
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3031 | serge | 199 | bool best_match); |
200 | static inline struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm, |
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201 | unsigned long size, |
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202 | unsigned alignment, |
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203 | bool best_match) |
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204 | { |
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205 | return drm_mm_search_free_generic(mm,size, alignment, 0, best_match); |
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206 | } |
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207 | static inline struct drm_mm_node *drm_mm_search_free_in_range( |
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208 | const struct drm_mm *mm, |
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209 | unsigned long size, |
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210 | unsigned alignment, |
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211 | unsigned long start, |
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212 | unsigned long end, |
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213 | bool best_match) |
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214 | { |
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215 | return drm_mm_search_free_in_range_generic(mm, size, alignment, 0, |
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216 | start, end, best_match); |
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217 | } |
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218 | static inline struct drm_mm_node *drm_mm_search_free_color(const struct drm_mm *mm, |
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219 | unsigned long size, |
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220 | unsigned alignment, |
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221 | unsigned long color, |
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222 | bool best_match) |
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223 | { |
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224 | return drm_mm_search_free_generic(mm,size, alignment, color, best_match); |
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225 | } |
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226 | static inline struct drm_mm_node *drm_mm_search_free_in_range_color( |
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227 | const struct drm_mm *mm, |
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228 | unsigned long size, |
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229 | unsigned alignment, |
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230 | unsigned long color, |
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231 | unsigned long start, |
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232 | unsigned long end, |
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233 | bool best_match) |
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234 | { |
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235 | return drm_mm_search_free_in_range_generic(mm, size, alignment, color, |
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236 | start, end, best_match); |
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237 | } |
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238 | extern int drm_mm_init(struct drm_mm *mm, |
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239 | unsigned long start, |
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1408 | serge | 240 | unsigned long size); |
241 | extern void drm_mm_takedown(struct drm_mm *mm); |
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242 | extern int drm_mm_clean(struct drm_mm *mm); |
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243 | extern int drm_mm_pre_get(struct drm_mm *mm); |
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244 | |||
245 | static inline struct drm_mm *drm_get_mm(struct drm_mm_node *block) |
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246 | { |
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247 | return block->mm; |
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248 | } |
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249 | |||
3031 | serge | 250 | void drm_mm_init_scan(struct drm_mm *mm, |
251 | unsigned long size, |
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1964 | serge | 252 | unsigned alignment, |
3031 | serge | 253 | unsigned long color); |
254 | void drm_mm_init_scan_with_range(struct drm_mm *mm, |
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255 | unsigned long size, |
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256 | unsigned alignment, |
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257 | unsigned long color, |
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1964 | serge | 258 | unsigned long start, |
259 | unsigned long end); |
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260 | int drm_mm_scan_add_block(struct drm_mm_node *node); |
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261 | int drm_mm_scan_remove_block(struct drm_mm_node *node); |
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262 | |||
1408 | serge | 263 | extern void drm_mm_debug_table(struct drm_mm *mm, const char *prefix); |
264 | #ifdef CONFIG_DEBUG_FS |
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265 | int drm_mm_dump_table(struct seq_file *m, struct drm_mm *mm); |
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266 | #endif |
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267 | |||
268 | #endif |