projects / mirror_ubuntu-zesty-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 249d6048 JG |
1 | /************************************************************************** |
| 2 | * | |
| 3 | * Copyright 2006-2008 Tungsten Graphics, Inc., Cedar Park, TX. USA. | |
| 4 | * All Rights Reserved. | |
| 5 | * | |
| 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: | |
| 13 | * | |
| 14 | * The above copyright notice and this permission notice (including the | |
| 15 | * next paragraph) shall be included in all copies or substantial portions | |
| 16 | * of the Software. | |
| 17 | * | |
| 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. | |
| 25 | * | |
| 26 | * | |
| 27 | **************************************************************************/ | |
| 28 | /* | |
| 29 | * Authors: | |
| 30 | * Thomas Hellstrom <thomas-at-tungstengraphics-dot-com> | |
| 31 | */ | |
| 32 | ||
| 33 | #ifndef _DRM_MM_H_ | |
| 34 | #define _DRM_MM_H_ | |
| 35 | ||
| 36 | /* | |
| 37 | * Generic range manager structs | |
| 38 | */ | |
| 39 | #include <linux/list.h> | |
| 40 | ||
| 41 | struct drm_mm_node { | |
| 42 | struct list_head fl_entry; | |
| 43 | struct list_head ml_entry; | |
| 44 | int free; | |
| 45 | unsigned long start; | |
| 46 | unsigned long size; | |
| 47 | struct drm_mm *mm; | |
| 48 | void *private; | |
| 49 | }; | |
| 50 | ||
| 51 | struct drm_mm { | |
| 52 | struct list_head fl_entry; | |
| 53 | struct list_head ml_entry; | |
| 54 | struct list_head unused_nodes; | |
| 55 | int num_unused; | |
| 56 | spinlock_t unused_lock; | |
| 57 | }; | |
| 58 | ||
| 59 | /* | |
| 60 | * Basic range manager support (drm_mm.c) | |
| 61 | */ | |
| 62 | ||
| 63 | extern struct drm_mm_node *drm_mm_get_block(struct drm_mm_node *parent, | |
| 64 | unsigned long size, | |
| 65 | unsigned alignment); | |
| 66 | extern struct drm_mm_node *drm_mm_get_block_atomic(struct drm_mm_node *parent, | |
| 67 | unsigned long size, | |
| 68 | unsigned alignment); | |
| 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, | |
| 71 | unsigned long size, | |
| 72 | unsigned alignment, | |
| 73 | int best_match); | |
| 74 | extern int drm_mm_init(struct drm_mm *mm, unsigned long start, | |
| 75 | unsigned long size); | |
| 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, | |
| 80 | unsigned long size); | |
| 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); | |
| 84 | ||
| 85 | static inline struct drm_mm *drm_get_mm(struct drm_mm_node *block) | |
| 86 | { | |
| 87 | return block->mm; | |
| 88 | } | |
| 89 | ||
| 90 | #endif |