1 /**************************************************************************
3 * Copyright 2006-2008 Tungsten Graphics, Inc., Cedar Park, TX. USA.
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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.
27 **************************************************************************/
30 * Thomas Hellstrom <thomas-at-tungstengraphics-dot-com>
37 * Generic range manager structs
39 #include <linux/list.h>
42 struct list_head fl_entry;
43 struct list_head ml_entry;
52 struct list_head fl_entry;
53 struct list_head ml_entry;
54 struct list_head unused_nodes;
56 spinlock_t unused_lock;
60 * Basic range manager support (drm_mm.c)
63 extern struct drm_mm_node *drm_mm_get_block(struct drm_mm_node *parent,
66 extern struct drm_mm_node *drm_mm_get_block_atomic(struct drm_mm_node *parent,
69 extern void drm_mm_put_block(struct drm_mm_node *cur);
70 extern struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm,
74 extern int drm_mm_init(struct drm_mm *mm, unsigned long start,
76 extern void drm_mm_takedown(struct drm_mm *mm);
77 extern int drm_mm_clean(struct drm_mm *mm);
78 extern unsigned long drm_mm_tail_space(struct drm_mm *mm);
79 extern int drm_mm_remove_space_from_tail(struct drm_mm *mm,
81 extern int drm_mm_add_space_to_tail(struct drm_mm *mm,
82 unsigned long size, int atomic);
83 extern int drm_mm_pre_get(struct drm_mm *mm);
85 static inline struct drm_mm *drm_get_mm(struct drm_mm_node *block)