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#include <sys/cdefs.h> 30__FBSDID("$FreeBSD$"); 31 32/* 33 * Authors: 34 * Thomas Hellstrom <thomas-at-tungstengraphics-dot-com> 35 */ 36 37#ifndef _DRM_MM_H_ 38#define _DRM_MM_H_ 39 40#include "dev/drm/drm_linux_list.h" 41 42struct drm_mm_node { 43 struct list_head fl_entry; 44 struct list_head ml_entry; 45 int free; 46 unsigned long start; 47 unsigned long size; 48 struct drm_mm *mm; 49 void *private; 50}; 51 52struct drm_mm { 53 struct list_head fl_entry; 54 struct list_head ml_entry; 55 struct list_head unused_nodes; 56 int num_unused; 57 struct mtx unused_lock; 58}; 59 60/* 61 * Basic range manager support (drm_mm.c) 62 */ 63extern struct drm_mm_node *drm_mm_get_block_generic(struct drm_mm_node *node, 64 unsigned long size, 65 unsigned alignment, 66 int atomic); 67static inline struct drm_mm_node *drm_mm_get_block(struct drm_mm_node *parent, 68 unsigned long size, 69 unsigned alignment) 70{ 71 return drm_mm_get_block_generic(parent, size, alignment, 0); 72} 73static inline struct drm_mm_node *drm_mm_get_block_atomic(struct drm_mm_node *parent, 74 unsigned long size, 75 unsigned alignment) 76{ 77 return drm_mm_get_block_generic(parent, size, alignment, 1); 78} 79extern void drm_mm_put_block(struct drm_mm_node *cur); 80extern struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm, 81 unsigned long size, 82 unsigned alignment, 83 int best_match); 84extern int drm_mm_init(struct drm_mm *mm, unsigned long start, 85 unsigned long size); 86extern void drm_mm_takedown(struct drm_mm *mm); 87extern int drm_mm_clean(struct drm_mm *mm); 88extern unsigned long drm_mm_tail_space(struct drm_mm *mm); 89extern int drm_mm_remove_space_from_tail(struct drm_mm *mm, 90 unsigned long size); 91extern int drm_mm_add_space_to_tail(struct drm_mm *mm, 92 unsigned long size, int atomic); 93extern int drm_mm_pre_get(struct drm_mm *mm); 94 95static inline struct drm_mm *drm_get_mm(struct drm_mm_node *block) 96{ 97 return block->mm; 98} 99 100#endif 101