107 lines
3.4 KiB
C
107 lines
3.4 KiB
C
/**************************************************************************
|
|
*
|
|
* 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 <thomas-at-tungstengraphics-dot-com>
|
|
*/
|
|
|
|
#ifndef _DRM_MM_H_
|
|
#define _DRM_MM_H_
|
|
|
|
/*
|
|
* Generic range manager structs
|
|
*/
|
|
#include <linux/list.h>
|
|
#ifdef CONFIG_DEBUG_FS
|
|
#include <linux/seq_file.h>
|
|
#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
|