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> 40249d6048SJerome Glisse 41249d6048SJerome Glisse struct drm_mm_node { 42249d6048SJerome Glisse struct list_head fl_entry; 43249d6048SJerome Glisse struct list_head ml_entry; 44249d6048SJerome Glisse int free; 45249d6048SJerome Glisse unsigned long start; 46249d6048SJerome Glisse unsigned long size; 47249d6048SJerome Glisse struct drm_mm *mm; 48249d6048SJerome Glisse void *private; 49249d6048SJerome Glisse }; 50249d6048SJerome Glisse 51249d6048SJerome Glisse struct drm_mm { 52249d6048SJerome Glisse struct list_head fl_entry; 53249d6048SJerome Glisse struct list_head ml_entry; 54249d6048SJerome Glisse struct list_head unused_nodes; 55249d6048SJerome Glisse int num_unused; 56249d6048SJerome Glisse spinlock_t unused_lock; 57249d6048SJerome Glisse }; 58249d6048SJerome Glisse 59249d6048SJerome Glisse /* 60249d6048SJerome Glisse * Basic range manager support (drm_mm.c) 61249d6048SJerome Glisse */ 6289579f77SThomas Hellstrom extern struct drm_mm_node *drm_mm_get_block_generic(struct drm_mm_node *node, 63249d6048SJerome Glisse unsigned long size, 6489579f77SThomas Hellstrom unsigned alignment, 6589579f77SThomas Hellstrom int atomic); 6689579f77SThomas Hellstrom static inline struct drm_mm_node *drm_mm_get_block(struct drm_mm_node *parent, 67249d6048SJerome Glisse unsigned long size, 6889579f77SThomas Hellstrom unsigned alignment) 6989579f77SThomas Hellstrom { 7089579f77SThomas Hellstrom return drm_mm_get_block_generic(parent, size, alignment, 0); 7189579f77SThomas Hellstrom } 7289579f77SThomas Hellstrom static inline struct drm_mm_node *drm_mm_get_block_atomic(struct drm_mm_node *parent, 7389579f77SThomas Hellstrom unsigned long size, 7489579f77SThomas Hellstrom unsigned alignment) 7589579f77SThomas Hellstrom { 7689579f77SThomas Hellstrom return drm_mm_get_block_generic(parent, size, alignment, 1); 7789579f77SThomas Hellstrom } 78249d6048SJerome Glisse extern void drm_mm_put_block(struct drm_mm_node *cur); 79249d6048SJerome Glisse extern struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm, 80249d6048SJerome Glisse unsigned long size, 81249d6048SJerome Glisse unsigned alignment, 82249d6048SJerome Glisse int best_match); 83249d6048SJerome Glisse extern int drm_mm_init(struct drm_mm *mm, unsigned long start, 84249d6048SJerome Glisse unsigned long size); 85249d6048SJerome Glisse extern void drm_mm_takedown(struct drm_mm *mm); 86249d6048SJerome Glisse extern int drm_mm_clean(struct drm_mm *mm); 87249d6048SJerome Glisse extern unsigned long drm_mm_tail_space(struct drm_mm *mm); 88249d6048SJerome Glisse extern int drm_mm_remove_space_from_tail(struct drm_mm *mm, 89249d6048SJerome Glisse unsigned long size); 90249d6048SJerome Glisse extern int drm_mm_add_space_to_tail(struct drm_mm *mm, 91249d6048SJerome Glisse unsigned long size, int atomic); 92249d6048SJerome Glisse extern int drm_mm_pre_get(struct drm_mm *mm); 93249d6048SJerome Glisse 94249d6048SJerome Glisse static inline struct drm_mm *drm_get_mm(struct drm_mm_node *block) 95249d6048SJerome Glisse { 96249d6048SJerome Glisse return block->mm; 97249d6048SJerome Glisse } 98249d6048SJerome Glisse 99fa8a1238SDave Airlie #ifdef CONFIG_DEBUG_FS 100fa8a1238SDave Airlie int drm_mm_dump_table(struct seq_file *m, struct drm_mm *mm); 101fa8a1238SDave Airlie #endif 102fa8a1238SDave Airlie 103249d6048SJerome Glisse #endif 104