/**************************************************************************
*
* Copyright 2006-2008 Tungsten Graphics, Inc., Cedar Park, TX. USA.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* «Software»), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED «AS IS», WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*
**************************************************************************/
/*
* Authors:
* Thomas Hellstrom */

#ifndef _DRM_MM_H_
#define _DRM_MM_H_

/*
* Generic range manager structs
*/
#include #ifdef CONFIG_DEBUG_FS
#include #endif

struct drm_mm_node {
struct list_head fl_entry;
struct list_head ml_entry;
int free;
unsigned long start;
unsigned long size;
struct drm_mm *mm;
void *private;
};

struct drm_mm {
struct list_head fl_entry;
struct list_head ml_entry;
struct list_head unused_nodes;
int num_unused;
spinlock_t unused_lock;
};

/*
* Basic range manager support (drm_mm.c)
*/
extern struct drm_mm_node *drm_mm_get_block_generic(struct drm_mm_node *node,
unsigned long size,
unsigned alignment,
int atomic);
static inline struct drm_mm_node *drm_mm_get_block(struct drm_mm_node *parent,
unsigned long size,
unsigned alignment)
{
return drm_mm_get_block_generic(parent, size, alignment, 0);
}
static inline struct drm_mm_node *drm_mm_get_block_atomic(struct drm_mm_node *parent,
unsigned long size,
unsigned alignment)
{
return drm_mm_get_block_generic(parent, size, alignment, 1);
}
extern void drm_mm_put_block(struct drm_mm_node *cur);
extern struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm,
unsigned long size,
unsigned alignment,
int best_match);
extern int drm_mm_init(struct drm_mm *mm, unsigned long start,
unsigned long size);
extern void drm_mm_takedown(struct drm_mm *mm);
extern int drm_mm_clean(struct drm_mm *mm);
extern unsigned long drm_mm_tail_space(struct drm_mm *mm);
extern int drm_mm_remove_space_from_tail(struct drm_mm *mm,
unsigned long size);
extern int drm_mm_add_space_to_tail(struct drm_mm *mm,
unsigned long size, int atomic);
extern int drm_mm_pre_get(struct drm_mm *mm);

static inline struct drm_mm *drm_get_mm(struct drm_mm_node *block)
{
return block->mm;
}

#ifdef CONFIG_DEBUG_FS
int drm_mm_dump_table(struct seq_file *m, struct drm_mm *mm);
#endif

#endif

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