1249d6048SJerome Glisse /************************************************************************** 2249d6048SJerome Glisse * 3249d6048SJerome Glisse * Copyright 2006-2008 Tungsten Graphics, Inc., Cedar Park, TX. USA. 4249d6048SJerome Glisse * All Rights Reserved. 5249d6048SJerome Glisse * 6249d6048SJerome Glisse * Permission is hereby granted, free of charge, to any person obtaining a 7249d6048SJerome Glisse * copy of this software and associated documentation files (the 8249d6048SJerome Glisse * "Software"), to deal in the Software without restriction, including 9249d6048SJerome Glisse * without limitation the rights to use, copy, modify, merge, publish, 10249d6048SJerome Glisse * distribute, sub license, and/or sell copies of the Software, and to 11249d6048SJerome Glisse * permit persons to whom the Software is furnished to do so, subject to 12249d6048SJerome Glisse * the following conditions: 13249d6048SJerome Glisse * 14249d6048SJerome Glisse * The above copyright notice and this permission notice (including the 15249d6048SJerome Glisse * next paragraph) shall be included in all copies or substantial portions 16249d6048SJerome Glisse * of the Software. 17249d6048SJerome Glisse * 18249d6048SJerome Glisse * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19249d6048SJerome Glisse * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20249d6048SJerome Glisse * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 21249d6048SJerome Glisse * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, 22249d6048SJerome Glisse * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 23249d6048SJerome Glisse * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 24249d6048SJerome Glisse * USE OR OTHER DEALINGS IN THE SOFTWARE. 25249d6048SJerome Glisse * 26249d6048SJerome Glisse * 27249d6048SJerome Glisse **************************************************************************/ 28249d6048SJerome Glisse /* 29249d6048SJerome Glisse * Authors: 30249d6048SJerome Glisse * Thomas Hellstrom <thomas-at-tungstengraphics-dot-com> 31249d6048SJerome Glisse */ 32249d6048SJerome Glisse 33249d6048SJerome Glisse #ifndef _DRM_MM_H_ 34249d6048SJerome Glisse #define _DRM_MM_H_ 35249d6048SJerome Glisse 36249d6048SJerome Glisse /* 37249d6048SJerome Glisse * Generic range manager structs 38249d6048SJerome Glisse */ 39249d6048SJerome Glisse #include <linux/list.h> 40f1938cd6SDave Airlie #ifdef CONFIG_DEBUG_FS 41f1938cd6SDave Airlie #include <linux/seq_file.h> 42f1938cd6SDave Airlie #endif 43249d6048SJerome Glisse 44249d6048SJerome Glisse struct drm_mm_node { 45d1024ce9SDaniel Vetter struct list_head node_list; 46ea7b1dd4SDaniel Vetter struct list_head hole_stack; 47ea7b1dd4SDaniel Vetter unsigned hole_follows : 1; 48709ea971SDaniel Vetter unsigned scanned_block : 1; 49709ea971SDaniel Vetter unsigned scanned_prev_free : 1; 50709ea971SDaniel Vetter unsigned scanned_next_free : 1; 51ea7b1dd4SDaniel Vetter unsigned scanned_preceeds_hole : 1; 52b0b7af18SDaniel Vetter unsigned allocated : 1; 536b9d89b4SChris Wilson unsigned long color; 54249d6048SJerome Glisse unsigned long start; 55249d6048SJerome Glisse unsigned long size; 56249d6048SJerome Glisse struct drm_mm *mm; 57249d6048SJerome Glisse }; 58249d6048SJerome Glisse 59249d6048SJerome Glisse struct drm_mm { 6025985edcSLucas De Marchi /* List of all memory nodes that immediately precede a free hole. */ 61ea7b1dd4SDaniel Vetter struct list_head hole_stack; 62ea7b1dd4SDaniel Vetter /* head_node.node_list is the list of all memory nodes, ordered 63ea7b1dd4SDaniel Vetter * according to the (increasing) start address of the memory node. */ 64ea7b1dd4SDaniel Vetter struct drm_mm_node head_node; 65249d6048SJerome Glisse struct list_head unused_nodes; 66249d6048SJerome Glisse int num_unused; 67249d6048SJerome Glisse spinlock_t unused_lock; 68d935cc61SDaniel Vetter unsigned int scan_check_range : 1; 69709ea971SDaniel Vetter unsigned scan_alignment; 706b9d89b4SChris Wilson unsigned long scan_color; 71709ea971SDaniel Vetter unsigned long scan_size; 72709ea971SDaniel Vetter unsigned long scan_hit_start; 73901593f2SChris Wilson unsigned long scan_hit_end; 74709ea971SDaniel Vetter unsigned scanned_blocks; 75d935cc61SDaniel Vetter unsigned long scan_start; 76d935cc61SDaniel Vetter unsigned long scan_end; 77ae0cec28SDaniel Vetter struct drm_mm_node *prev_scanned_node; 786b9d89b4SChris Wilson 796b9d89b4SChris Wilson void (*color_adjust)(struct drm_mm_node *node, unsigned long color, 806b9d89b4SChris Wilson unsigned long *start, unsigned long *end); 81249d6048SJerome Glisse }; 82249d6048SJerome Glisse 83b0b7af18SDaniel Vetter static inline bool drm_mm_node_allocated(struct drm_mm_node *node) 84b0b7af18SDaniel Vetter { 85b0b7af18SDaniel Vetter return node->allocated; 86b0b7af18SDaniel Vetter } 87b0b7af18SDaniel Vetter 8831a5b8ceSDaniel Vetter static inline bool drm_mm_initialized(struct drm_mm *mm) 8931a5b8ceSDaniel Vetter { 90ea7b1dd4SDaniel Vetter return mm->hole_stack.next; 9131a5b8ceSDaniel Vetter } 92ea7b1dd4SDaniel Vetter #define drm_mm_for_each_node(entry, mm) list_for_each_entry(entry, \ 93ea7b1dd4SDaniel Vetter &(mm)->head_node.node_list, \ 942bbd4492SDaniel Vetter node_list) 95ae0cec28SDaniel Vetter #define drm_mm_for_each_scanned_node_reverse(entry, n, mm) \ 96ae0cec28SDaniel Vetter for (entry = (mm)->prev_scanned_node, \ 97ae0cec28SDaniel Vetter next = entry ? list_entry(entry->node_list.next, \ 98ae0cec28SDaniel Vetter struct drm_mm_node, node_list) : NULL; \ 99ae0cec28SDaniel Vetter entry != NULL; entry = next, \ 100ae0cec28SDaniel Vetter next = entry ? list_entry(entry->node_list.next, \ 101ae0cec28SDaniel Vetter struct drm_mm_node, node_list) : NULL) \ 102249d6048SJerome Glisse /* 103249d6048SJerome Glisse * Basic range manager support (drm_mm.c) 104249d6048SJerome Glisse */ 10589579f77SThomas Hellstrom extern struct drm_mm_node *drm_mm_get_block_generic(struct drm_mm_node *node, 106249d6048SJerome Glisse unsigned long size, 10789579f77SThomas Hellstrom unsigned alignment, 1086b9d89b4SChris Wilson unsigned long color, 10989579f77SThomas Hellstrom int atomic); 110a2e68e92SJerome Glisse extern struct drm_mm_node *drm_mm_get_block_range_generic( 111a2e68e92SJerome Glisse struct drm_mm_node *node, 112a2e68e92SJerome Glisse unsigned long size, 113a2e68e92SJerome Glisse unsigned alignment, 1146b9d89b4SChris Wilson unsigned long color, 115a2e68e92SJerome Glisse unsigned long start, 116a2e68e92SJerome Glisse unsigned long end, 117a2e68e92SJerome Glisse int atomic); 11889579f77SThomas Hellstrom static inline struct drm_mm_node *drm_mm_get_block(struct drm_mm_node *parent, 119249d6048SJerome Glisse unsigned long size, 12089579f77SThomas Hellstrom unsigned alignment) 12189579f77SThomas Hellstrom { 1226b9d89b4SChris Wilson return drm_mm_get_block_generic(parent, size, alignment, 0, 0); 12389579f77SThomas Hellstrom } 12489579f77SThomas Hellstrom static inline struct drm_mm_node *drm_mm_get_block_atomic(struct drm_mm_node *parent, 12589579f77SThomas Hellstrom unsigned long size, 12689579f77SThomas Hellstrom unsigned alignment) 12789579f77SThomas Hellstrom { 1286b9d89b4SChris Wilson return drm_mm_get_block_generic(parent, size, alignment, 0, 1); 12989579f77SThomas Hellstrom } 130a2e68e92SJerome Glisse static inline struct drm_mm_node *drm_mm_get_block_range( 131a2e68e92SJerome Glisse struct drm_mm_node *parent, 132a2e68e92SJerome Glisse unsigned long size, 133a2e68e92SJerome Glisse unsigned alignment, 134a2e68e92SJerome Glisse unsigned long start, 135a2e68e92SJerome Glisse unsigned long end) 136a2e68e92SJerome Glisse { 1376b9d89b4SChris Wilson return drm_mm_get_block_range_generic(parent, size, alignment, 0, 1386b9d89b4SChris Wilson start, end, 0); 1396b9d89b4SChris Wilson } 1406b9d89b4SChris Wilson static inline struct drm_mm_node *drm_mm_get_color_block_range( 1416b9d89b4SChris Wilson struct drm_mm_node *parent, 1426b9d89b4SChris Wilson unsigned long size, 1436b9d89b4SChris Wilson unsigned alignment, 1446b9d89b4SChris Wilson unsigned long color, 1456b9d89b4SChris Wilson unsigned long start, 1466b9d89b4SChris Wilson unsigned long end) 1476b9d89b4SChris Wilson { 1486b9d89b4SChris Wilson return drm_mm_get_block_range_generic(parent, size, alignment, color, 149a2e68e92SJerome Glisse start, end, 0); 150a2e68e92SJerome Glisse } 151a2e68e92SJerome Glisse static inline struct drm_mm_node *drm_mm_get_block_atomic_range( 152a2e68e92SJerome Glisse struct drm_mm_node *parent, 153a2e68e92SJerome Glisse unsigned long size, 154a2e68e92SJerome Glisse unsigned alignment, 155a2e68e92SJerome Glisse unsigned long start, 156a2e68e92SJerome Glisse unsigned long end) 157a2e68e92SJerome Glisse { 1586b9d89b4SChris Wilson return drm_mm_get_block_range_generic(parent, size, alignment, 0, 159a2e68e92SJerome Glisse start, end, 1); 160a2e68e92SJerome Glisse } 161b8103450SChris Wilson 162b8103450SChris Wilson extern int drm_mm_insert_node(struct drm_mm *mm, 163b8103450SChris Wilson struct drm_mm_node *node, 164b8103450SChris Wilson unsigned long size, 165b8103450SChris Wilson unsigned alignment); 166b0b7af18SDaniel Vetter extern int drm_mm_insert_node_in_range(struct drm_mm *mm, 167b0b7af18SDaniel Vetter struct drm_mm_node *node, 168b8103450SChris Wilson unsigned long size, 169b8103450SChris Wilson unsigned alignment, 170b8103450SChris Wilson unsigned long start, 171b8103450SChris Wilson unsigned long end); 172b8103450SChris Wilson extern int drm_mm_insert_node_generic(struct drm_mm *mm, 173b8103450SChris Wilson struct drm_mm_node *node, 174b8103450SChris Wilson unsigned long size, 175b8103450SChris Wilson unsigned alignment, 176b8103450SChris Wilson unsigned long color); 177b8103450SChris Wilson extern int drm_mm_insert_node_in_range_generic(struct drm_mm *mm, 178b8103450SChris Wilson struct drm_mm_node *node, 179b8103450SChris Wilson unsigned long size, 180b8103450SChris Wilson unsigned alignment, 181b8103450SChris Wilson unsigned long color, 182b8103450SChris Wilson unsigned long start, 183b8103450SChris Wilson unsigned long end); 184249d6048SJerome Glisse extern void drm_mm_put_block(struct drm_mm_node *cur); 185b0b7af18SDaniel Vetter extern void drm_mm_remove_node(struct drm_mm_node *node); 186b0b7af18SDaniel Vetter extern void drm_mm_replace_node(struct drm_mm_node *old, struct drm_mm_node *new); 1876b9d89b4SChris Wilson extern struct drm_mm_node *drm_mm_search_free_generic(const struct drm_mm *mm, 188249d6048SJerome Glisse unsigned long size, 189249d6048SJerome Glisse unsigned alignment, 1906b9d89b4SChris Wilson unsigned long color, 1916b9d89b4SChris Wilson bool best_match); 1926b9d89b4SChris Wilson extern struct drm_mm_node *drm_mm_search_free_in_range_generic( 1936b9d89b4SChris Wilson const struct drm_mm *mm, 1946b9d89b4SChris Wilson unsigned long size, 1956b9d89b4SChris Wilson unsigned alignment, 1966b9d89b4SChris Wilson unsigned long color, 1976b9d89b4SChris Wilson unsigned long start, 1986b9d89b4SChris Wilson unsigned long end, 1996b9d89b4SChris Wilson bool best_match); 2006b9d89b4SChris Wilson static inline struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm, 2016b9d89b4SChris Wilson unsigned long size, 2026b9d89b4SChris Wilson unsigned alignment, 2036b9d89b4SChris Wilson bool best_match) 2046b9d89b4SChris Wilson { 2056b9d89b4SChris Wilson return drm_mm_search_free_generic(mm,size, alignment, 0, best_match); 2066b9d89b4SChris Wilson } 2076b9d89b4SChris Wilson static inline struct drm_mm_node *drm_mm_search_free_in_range( 208a2e68e92SJerome Glisse const struct drm_mm *mm, 209a2e68e92SJerome Glisse unsigned long size, 210a2e68e92SJerome Glisse unsigned alignment, 211a2e68e92SJerome Glisse unsigned long start, 212a2e68e92SJerome Glisse unsigned long end, 2136b9d89b4SChris Wilson bool best_match) 2146b9d89b4SChris Wilson { 2156b9d89b4SChris Wilson return drm_mm_search_free_in_range_generic(mm, size, alignment, 0, 2166b9d89b4SChris Wilson start, end, best_match); 2176b9d89b4SChris Wilson } 2186b9d89b4SChris Wilson static inline struct drm_mm_node *drm_mm_search_free_color(const struct drm_mm *mm, 2196b9d89b4SChris Wilson unsigned long size, 2206b9d89b4SChris Wilson unsigned alignment, 2216b9d89b4SChris Wilson unsigned long color, 2226b9d89b4SChris Wilson bool best_match) 2236b9d89b4SChris Wilson { 2246b9d89b4SChris Wilson return drm_mm_search_free_generic(mm,size, alignment, color, best_match); 2256b9d89b4SChris Wilson } 2266b9d89b4SChris Wilson static inline struct drm_mm_node *drm_mm_search_free_in_range_color( 2276b9d89b4SChris Wilson const struct drm_mm *mm, 2286b9d89b4SChris Wilson unsigned long size, 2296b9d89b4SChris Wilson unsigned alignment, 2306b9d89b4SChris Wilson unsigned long color, 2316b9d89b4SChris Wilson unsigned long start, 2326b9d89b4SChris Wilson unsigned long end, 2336b9d89b4SChris Wilson bool best_match) 2346b9d89b4SChris Wilson { 2356b9d89b4SChris Wilson return drm_mm_search_free_in_range_generic(mm, size, alignment, color, 2366b9d89b4SChris Wilson start, end, best_match); 2376b9d89b4SChris Wilson } 2386b9d89b4SChris Wilson extern int drm_mm_init(struct drm_mm *mm, 2396b9d89b4SChris Wilson unsigned long start, 240249d6048SJerome Glisse unsigned long size); 241249d6048SJerome Glisse extern void drm_mm_takedown(struct drm_mm *mm); 242249d6048SJerome Glisse extern int drm_mm_clean(struct drm_mm *mm); 243249d6048SJerome Glisse extern int drm_mm_pre_get(struct drm_mm *mm); 244249d6048SJerome Glisse 245249d6048SJerome Glisse static inline struct drm_mm *drm_get_mm(struct drm_mm_node *block) 246249d6048SJerome Glisse { 247249d6048SJerome Glisse return block->mm; 248249d6048SJerome Glisse } 249249d6048SJerome Glisse 2506b9d89b4SChris Wilson void drm_mm_init_scan(struct drm_mm *mm, 2516b9d89b4SChris Wilson unsigned long size, 252d935cc61SDaniel Vetter unsigned alignment, 2536b9d89b4SChris Wilson unsigned long color); 2546b9d89b4SChris Wilson void drm_mm_init_scan_with_range(struct drm_mm *mm, 2556b9d89b4SChris Wilson unsigned long size, 2566b9d89b4SChris Wilson unsigned alignment, 2576b9d89b4SChris Wilson unsigned long color, 258d935cc61SDaniel Vetter unsigned long start, 259d935cc61SDaniel Vetter unsigned long end); 260709ea971SDaniel Vetter int drm_mm_scan_add_block(struct drm_mm_node *node); 261709ea971SDaniel Vetter int drm_mm_scan_remove_block(struct drm_mm_node *node); 262709ea971SDaniel Vetter 26399d7e48eSJerome Glisse extern void drm_mm_debug_table(struct drm_mm *mm, const char *prefix); 264fa8a1238SDave Airlie #ifdef CONFIG_DEBUG_FS 265fa8a1238SDave Airlie int drm_mm_dump_table(struct seq_file *m, struct drm_mm *mm); 266fa8a1238SDave Airlie #endif 267fa8a1238SDave Airlie 268249d6048SJerome Glisse #endif 269