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1120 serge 1 
/**************************************************************************
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 *
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 * Copyright 2006-2008 Tungsten Graphics, Inc., Cedar Park, TX. USA.
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 * All Rights Reserved.
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a
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 * copy of this software and associated documentation files (the
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 * "Software"), to deal in the Software without restriction, including
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 * without limitation the rights to use, copy, modify, merge, publish,
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 * distribute, sub license, and/or sell copies of the Software, and to
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 * permit persons to whom the Software is furnished to do so, subject to
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 * the following conditions:
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 *
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 * The above copyright notice and this permission notice (including the
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 * next paragraph) shall be included in all copies or substantial portions
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 * of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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 * USE OR OTHER DEALINGS IN THE SOFTWARE.
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 *
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 *
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 **************************************************************************/
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/*
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 * Authors:
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 * Thomas Hellstrom
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 */
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#ifndef _DRM_MM_H_
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#define _DRM_MM_H_
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/*
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 * Generic range manager structs
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 */
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#include
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#include
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#include
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#define spin_lock_init(x)
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#define spin_lock(x)
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#define spin_unlock(x)
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struct drm_mm_node {
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	struct list_head fl_entry;
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	struct list_head ml_entry;
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	int free;
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	unsigned long start;
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	unsigned long size;
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	struct drm_mm *mm;
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	void *private;
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};
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struct drm_mm {
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	struct list_head fl_entry;
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	struct list_head ml_entry;
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	struct list_head unused_nodes;
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	int num_unused;
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//   spinlock_t unused_lock;
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};
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/*
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 * Basic range manager support (drm_mm.c)
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 */
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extern struct drm_mm_node *drm_mm_get_block_generic(struct drm_mm_node *node,
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						    unsigned long size,
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						    unsigned alignment,
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						    int atomic);
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static inline struct drm_mm_node *drm_mm_get_block(struct drm_mm_node *parent,
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						   unsigned long size,
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						   unsigned alignment)
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{
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	return drm_mm_get_block_generic(parent, size, alignment, 0);
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}
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static inline struct drm_mm_node *drm_mm_get_block_atomic(struct drm_mm_node *parent,
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							  unsigned long size,
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							  unsigned alignment)
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{
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	return drm_mm_get_block_generic(parent, size, alignment, 1);
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}
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extern void drm_mm_put_block(struct drm_mm_node *cur);
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extern struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm,
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					      unsigned long size,
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					      unsigned alignment,
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					      int best_match);
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extern int drm_mm_init(struct drm_mm *mm, unsigned long start,
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		       unsigned long size);
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extern void drm_mm_takedown(struct drm_mm *mm);
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extern int drm_mm_clean(struct drm_mm *mm);
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extern unsigned long drm_mm_tail_space(struct drm_mm *mm);
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extern int drm_mm_remove_space_from_tail(struct drm_mm *mm,
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					 unsigned long size);
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extern int drm_mm_add_space_to_tail(struct drm_mm *mm,
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				    unsigned long size, int atomic);
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extern int drm_mm_pre_get(struct drm_mm *mm);
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static inline struct drm_mm *drm_get_mm(struct drm_mm_node *block)
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{
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	return block->mm;
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}
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#endif