1203287Srnoland/************************************************************************** 2203287Srnoland * 3203287Srnoland * Copyright 2006-2008 Tungsten Graphics, Inc., Cedar Park, TX. USA. 4203287Srnoland * All Rights Reserved. 5203287Srnoland * 6203287Srnoland * Permission is hereby granted, free of charge, to any person obtaining a 7203287Srnoland * copy of this software and associated documentation files (the 8203287Srnoland * "Software"), to deal in the Software without restriction, including 9203287Srnoland * without limitation the rights to use, copy, modify, merge, publish, 10203287Srnoland * distribute, sub license, and/or sell copies of the Software, and to 11203287Srnoland * permit persons to whom the Software is furnished to do so, subject to 12203287Srnoland * the following conditions: 13203287Srnoland * 14203287Srnoland * The above copyright notice and this permission notice (including the 15203287Srnoland * next paragraph) shall be included in all copies or substantial portions 16203287Srnoland * of the Software. 17203287Srnoland * 18203287Srnoland * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19203287Srnoland * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20203287Srnoland * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 21203287Srnoland * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, 22203287Srnoland * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 23203287Srnoland * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 24203287Srnoland * USE OR OTHER DEALINGS IN THE SOFTWARE. 25203287Srnoland * 26203287Srnoland * 27203287Srnoland **************************************************************************/ 28203287Srnoland 29203287Srnoland#include <sys/cdefs.h> 30203287Srnoland__FBSDID("$FreeBSD$"); 31203287Srnoland 32203287Srnoland/* 33203287Srnoland * Authors: 34203287Srnoland * Thomas Hellstrom <thomas-at-tungstengraphics-dot-com> 35203287Srnoland */ 36203287Srnoland 37203287Srnoland#ifndef _DRM_MM_H_ 38203287Srnoland#define _DRM_MM_H_ 39203287Srnoland 40203287Srnoland#include "dev/drm/drm_linux_list.h" 41203287Srnoland 42203287Srnolandstruct drm_mm_node { 43203287Srnoland struct list_head fl_entry; 44203287Srnoland struct list_head ml_entry; 45203287Srnoland int free; 46203287Srnoland unsigned long start; 47203287Srnoland unsigned long size; 48203287Srnoland struct drm_mm *mm; 49203287Srnoland void *private; 50203287Srnoland}; 51203287Srnoland 52203287Srnolandstruct drm_mm { 53203287Srnoland struct list_head fl_entry; 54203287Srnoland struct list_head ml_entry; 55203287Srnoland struct list_head unused_nodes; 56203287Srnoland int num_unused; 57203287Srnoland struct mtx unused_lock; 58203287Srnoland}; 59203287Srnoland 60203287Srnoland/* 61203287Srnoland * Basic range manager support (drm_mm.c) 62203287Srnoland */ 63203287Srnolandextern struct drm_mm_node *drm_mm_get_block_generic(struct drm_mm_node *node, 64203287Srnoland unsigned long size, 65203287Srnoland unsigned alignment, 66203287Srnoland int atomic); 67203287Srnolandstatic inline struct drm_mm_node *drm_mm_get_block(struct drm_mm_node *parent, 68203287Srnoland unsigned long size, 69203287Srnoland unsigned alignment) 70203287Srnoland{ 71203287Srnoland return drm_mm_get_block_generic(parent, size, alignment, 0); 72203287Srnoland} 73203287Srnolandstatic inline struct drm_mm_node *drm_mm_get_block_atomic(struct drm_mm_node *parent, 74203287Srnoland unsigned long size, 75203287Srnoland unsigned alignment) 76203287Srnoland{ 77203287Srnoland return drm_mm_get_block_generic(parent, size, alignment, 1); 78203287Srnoland} 79203287Srnolandextern void drm_mm_put_block(struct drm_mm_node *cur); 80203287Srnolandextern struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm, 81203287Srnoland unsigned long size, 82203287Srnoland unsigned alignment, 83203287Srnoland int best_match); 84203287Srnolandextern int drm_mm_init(struct drm_mm *mm, unsigned long start, 85203287Srnoland unsigned long size); 86203287Srnolandextern void drm_mm_takedown(struct drm_mm *mm); 87203287Srnolandextern int drm_mm_clean(struct drm_mm *mm); 88203287Srnolandextern unsigned long drm_mm_tail_space(struct drm_mm *mm); 89203287Srnolandextern int drm_mm_remove_space_from_tail(struct drm_mm *mm, 90203287Srnoland unsigned long size); 91203287Srnolandextern int drm_mm_add_space_to_tail(struct drm_mm *mm, 92203287Srnoland unsigned long size, int atomic); 93203287Srnolandextern int drm_mm_pre_get(struct drm_mm *mm); 94203287Srnoland 95203287Srnolandstatic inline struct drm_mm *drm_get_mm(struct drm_mm_node *block) 96203287Srnoland{ 97203287Srnoland return block->mm; 98203287Srnoland} 99203287Srnoland 100203287Srnoland#endif 101