WebSVN – Kolibri OS – Blame – /drivers/include/drm/drm_mm.h

Rev	Author	Line No.	Line
1408	serge	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
		31	*/
		32
		33	#ifndef _DRM_MM_H_
		34	#define _DRM_MM_H_
		35
		36	/*
		37	* Generic range manager structs
		38	*/
		39	#include
		40	#ifdef CONFIG_DEBUG_FS
		41	#include
		42	#endif
		43
		44	struct drm_mm_node {
		45	struct list_head fl_entry;
		46	struct list_head ml_entry;
		47	int free;
		48	unsigned long start;
		49	unsigned long size;
		50	struct drm_mm *mm;
		51	void *private;
		52	};
		53
		54	struct drm_mm {
		55	struct list_head fl_entry;
		56	struct list_head ml_entry;
		57	struct list_head unused_nodes;
		58	int num_unused;
		59	spinlock_t unused_lock;
		60	};
		61
		62	/*
		63	* Basic range manager support (drm_mm.c)
		64	*/
		65	extern struct drm_mm_node drm_mm_get_block_generic(struct drm_mm_node node,
		66	unsigned long size,
		67	unsigned alignment,
		68	int atomic);
		69	extern struct drm_mm_node *drm_mm_get_block_range_generic(
		70	struct drm_mm_node *node,
		71	unsigned long size,
		72	unsigned alignment,
		73	unsigned long start,
		74	unsigned long end,
		75	int atomic);
		76	static inline struct drm_mm_node drm_mm_get_block(struct drm_mm_node parent,
		77	unsigned long size,
		78	unsigned alignment)
		79	{
		80	return drm_mm_get_block_generic(parent, size, alignment, 0);
		81	}
		82	static inline struct drm_mm_node drm_mm_get_block_atomic(struct drm_mm_node parent,
		83	unsigned long size,
		84	unsigned alignment)
		85	{
		86	return drm_mm_get_block_generic(parent, size, alignment, 1);
		87	}
		88	static inline struct drm_mm_node *drm_mm_get_block_range(
		89	struct drm_mm_node *parent,
		90	unsigned long size,
		91	unsigned alignment,
		92	unsigned long start,
		93	unsigned long end)
		94	{
		95	return drm_mm_get_block_range_generic(parent, size, alignment,
		96	start, end, 0);
		97	}
		98	static inline struct drm_mm_node *drm_mm_get_block_atomic_range(
		99	struct drm_mm_node *parent,
		100	unsigned long size,
		101	unsigned alignment,
		102	unsigned long start,
		103	unsigned long end)
		104	{
		105	return drm_mm_get_block_range_generic(parent, size, alignment,
		106	start, end, 1);
		107	}
		108	extern void drm_mm_put_block(struct drm_mm_node *cur);
		109	extern struct drm_mm_node drm_mm_search_free(const struct drm_mm mm,
		110	unsigned long size,
		111	unsigned alignment,
		112	int best_match);
		113	extern struct drm_mm_node *drm_mm_search_free_in_range(
		114	const struct drm_mm *mm,
		115	unsigned long size,
		116	unsigned alignment,
		117	unsigned long start,
		118	unsigned long end,
		119	int best_match);
		120	extern int drm_mm_init(struct drm_mm *mm, unsigned long start,
		121	unsigned long size);
		122	extern void drm_mm_takedown(struct drm_mm *mm);
		123	extern int drm_mm_clean(struct drm_mm *mm);
		124	extern unsigned long drm_mm_tail_space(struct drm_mm *mm);
		125	extern int drm_mm_remove_space_from_tail(struct drm_mm *mm,
		126	unsigned long size);
		127	extern int drm_mm_add_space_to_tail(struct drm_mm *mm,
		128	unsigned long size, int atomic);
		129	extern int drm_mm_pre_get(struct drm_mm *mm);
		130
		131	static inline struct drm_mm drm_get_mm(struct drm_mm_node block)
		132	{
		133	return block->mm;
		134	}
		135
		136	extern void drm_mm_debug_table(struct drm_mm mm, const char prefix);
		137	#ifdef CONFIG_DEBUG_FS
		138	int drm_mm_dump_table(struct seq_file m, struct drm_mm mm);
		139	#endif
		140
		141	#endif

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(root)/drivers/include/drm/drm_mm.h @ 3192 – Rev 1408