0,0 → 1,141 |
/************************************************************************** |
* |
* 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); |
extern struct drm_mm_node *drm_mm_get_block_range_generic( |
struct drm_mm_node *node, |
unsigned long size, |
unsigned alignment, |
unsigned long start, |
unsigned long end, |
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); |
} |
static inline struct drm_mm_node *drm_mm_get_block_range( |
struct drm_mm_node *parent, |
unsigned long size, |
unsigned alignment, |
unsigned long start, |
unsigned long end) |
{ |
return drm_mm_get_block_range_generic(parent, size, alignment, |
start, end, 0); |
} |
static inline struct drm_mm_node *drm_mm_get_block_atomic_range( |
struct drm_mm_node *parent, |
unsigned long size, |
unsigned alignment, |
unsigned long start, |
unsigned long end) |
{ |
return drm_mm_get_block_range_generic(parent, size, alignment, |
start, end, 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 struct drm_mm_node *drm_mm_search_free_in_range( |
const struct drm_mm *mm, |
unsigned long size, |
unsigned alignment, |
unsigned long start, |
unsigned long end, |
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; |
} |
|
extern void drm_mm_debug_table(struct drm_mm *mm, const char *prefix); |
#ifdef CONFIG_DEBUG_FS |
int drm_mm_dump_table(struct seq_file *m, struct drm_mm *mm); |
#endif |
|
#endif |