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 free_stack; 46d1024ce9SDaniel Vetter struct list_head node_list; 47249d6048SJerome Glisse int free; 48249d6048SJerome Glisse unsigned long start; 49249d6048SJerome Glisse unsigned long size; 50249d6048SJerome Glisse struct drm_mm *mm; 51249d6048SJerome Glisse }; 52249d6048SJerome Glisse 53249d6048SJerome Glisse struct drm_mm { 54d1024ce9SDaniel Vetter /* List of free memory blocks, most recently freed ordered. */ 55d1024ce9SDaniel Vetter struct list_head free_stack; 56d1024ce9SDaniel Vetter /* List of all memory nodes, ordered according to the (increasing) start 57d1024ce9SDaniel Vetter * address of the memory node. */ 58d1024ce9SDaniel Vetter struct list_head node_list; 59249d6048SJerome Glisse struct list_head unused_nodes; 60249d6048SJerome Glisse int num_unused; 61249d6048SJerome Glisse spinlock_t unused_lock; 62249d6048SJerome Glisse }; 63249d6048SJerome Glisse 64249d6048SJerome Glisse /* 65249d6048SJerome Glisse * Basic range manager support (drm_mm.c) 66249d6048SJerome Glisse */ 6789579f77SThomas Hellstrom extern struct drm_mm_node *drm_mm_get_block_generic(struct drm_mm_node *node, 68249d6048SJerome Glisse unsigned long size, 6989579f77SThomas Hellstrom unsigned alignment, 7089579f77SThomas Hellstrom int atomic); 71a2e68e92SJerome Glisse extern struct drm_mm_node *drm_mm_get_block_range_generic( 72a2e68e92SJerome Glisse struct drm_mm_node *node, 73a2e68e92SJerome Glisse unsigned long size, 74a2e68e92SJerome Glisse unsigned alignment, 75a2e68e92SJerome Glisse unsigned long start, 76a2e68e92SJerome Glisse unsigned long end, 77a2e68e92SJerome Glisse int atomic); 7889579f77SThomas Hellstrom static inline struct drm_mm_node *drm_mm_get_block(struct drm_mm_node *parent, 79249d6048SJerome Glisse unsigned long size, 8089579f77SThomas Hellstrom unsigned alignment) 8189579f77SThomas Hellstrom { 8289579f77SThomas Hellstrom return drm_mm_get_block_generic(parent, size, alignment, 0); 8389579f77SThomas Hellstrom } 8489579f77SThomas Hellstrom static inline struct drm_mm_node *drm_mm_get_block_atomic(struct drm_mm_node *parent, 8589579f77SThomas Hellstrom unsigned long size, 8689579f77SThomas Hellstrom unsigned alignment) 8789579f77SThomas Hellstrom { 8889579f77SThomas Hellstrom return drm_mm_get_block_generic(parent, size, alignment, 1); 8989579f77SThomas Hellstrom } 90a2e68e92SJerome Glisse static inline struct drm_mm_node *drm_mm_get_block_range( 91a2e68e92SJerome Glisse struct drm_mm_node *parent, 92a2e68e92SJerome Glisse unsigned long size, 93a2e68e92SJerome Glisse unsigned alignment, 94a2e68e92SJerome Glisse unsigned long start, 95a2e68e92SJerome Glisse unsigned long end) 96a2e68e92SJerome Glisse { 97a2e68e92SJerome Glisse return drm_mm_get_block_range_generic(parent, size, alignment, 98a2e68e92SJerome Glisse start, end, 0); 99a2e68e92SJerome Glisse } 100a2e68e92SJerome Glisse static inline struct drm_mm_node *drm_mm_get_block_atomic_range( 101a2e68e92SJerome Glisse struct drm_mm_node *parent, 102a2e68e92SJerome Glisse unsigned long size, 103a2e68e92SJerome Glisse unsigned alignment, 104a2e68e92SJerome Glisse unsigned long start, 105a2e68e92SJerome Glisse unsigned long end) 106a2e68e92SJerome Glisse { 107a2e68e92SJerome Glisse return drm_mm_get_block_range_generic(parent, size, alignment, 108a2e68e92SJerome Glisse start, end, 1); 109a2e68e92SJerome Glisse } 110249d6048SJerome Glisse extern void drm_mm_put_block(struct drm_mm_node *cur); 111249d6048SJerome Glisse extern struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm, 112249d6048SJerome Glisse unsigned long size, 113249d6048SJerome Glisse unsigned alignment, 114249d6048SJerome Glisse int best_match); 115a2e68e92SJerome Glisse extern struct drm_mm_node *drm_mm_search_free_in_range( 116a2e68e92SJerome Glisse const struct drm_mm *mm, 117a2e68e92SJerome Glisse unsigned long size, 118a2e68e92SJerome Glisse unsigned alignment, 119a2e68e92SJerome Glisse unsigned long start, 120a2e68e92SJerome Glisse unsigned long end, 121a2e68e92SJerome Glisse int best_match); 122249d6048SJerome Glisse extern int drm_mm_init(struct drm_mm *mm, unsigned long start, 123249d6048SJerome Glisse unsigned long size); 124249d6048SJerome Glisse extern void drm_mm_takedown(struct drm_mm *mm); 125249d6048SJerome Glisse extern int drm_mm_clean(struct drm_mm *mm); 126249d6048SJerome Glisse extern unsigned long drm_mm_tail_space(struct drm_mm *mm); 127249d6048SJerome Glisse extern int drm_mm_remove_space_from_tail(struct drm_mm *mm, 128249d6048SJerome Glisse unsigned long size); 129249d6048SJerome Glisse extern int drm_mm_add_space_to_tail(struct drm_mm *mm, 130249d6048SJerome Glisse unsigned long size, int atomic); 131249d6048SJerome Glisse extern int drm_mm_pre_get(struct drm_mm *mm); 132249d6048SJerome Glisse 133249d6048SJerome Glisse static inline struct drm_mm *drm_get_mm(struct drm_mm_node *block) 134249d6048SJerome Glisse { 135249d6048SJerome Glisse return block->mm; 136249d6048SJerome Glisse } 137249d6048SJerome Glisse 13899d7e48eSJerome Glisse extern void drm_mm_debug_table(struct drm_mm *mm, const char *prefix); 139fa8a1238SDave Airlie #ifdef CONFIG_DEBUG_FS 140fa8a1238SDave Airlie int drm_mm_dump_table(struct seq_file *m, struct drm_mm *mm); 141fa8a1238SDave Airlie #endif 142fa8a1238SDave Airlie 143249d6048SJerome Glisse #endif 144