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drm: Split out the mm declarations in a separate header. Add atomic operations.

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this is a TTM preparation patch, it rearranges the mm and
add operations needed to do mm operations in atomic context.

Signed-off-by: Thomas Hellstrom <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
This commit is contained in:
Jerome Glisse 2009-04-08 17:11:16 +02:00 • committed by Dave Airlie
commit 249d6048ca
3 changed files with 228 additions and 64 deletions
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37
include/drm/drmP.h
View file

@ -86,6 +86,7 @@ struct drm_device;
#include "drm_os_linux.h"
#include "drm_hashtab.h"
#include "drm_mm.h"
#define DRM_UT_CORE 0x01
#define DRM_UT_DRIVER 0x02
@ -553,26 +554,6 @@ struct drm_sigdata {
};
/*
* Generic memory manager structs
*/
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;
};
/**
* Kernel side of a mapping
*/
@ -1436,22 +1417,6 @@ extern char *drm_get_connector_status_name(enum drm_connector_status status);
extern int drm_sysfs_connector_add(struct drm_connector *connector);
extern void drm_sysfs_connector_remove(struct drm_connector *connector);
/*
* Basic memory manager support (drm_mm.c)
*/
extern struct drm_mm_node *drm_mm_get_block(struct drm_mm_node * parent,
unsigned long size,
unsigned alignment);
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);
/* Graphics Execution Manager library functions (drm_gem.c) */
int drm_gem_init(struct drm_device *dev);
void drm_gem_destroy(struct drm_device *dev);

90
include/drm/drm_mm.h Normal file
View file

@ -0,0 +1,90 @@
/**************************************************************************
*
* 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>
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(struct drm_mm_node *parent,
unsigned long size,
unsigned alignment);
extern struct drm_mm_node *drm_mm_get_block_atomic(struct drm_mm_node *parent,
unsigned long size,
unsigned alignment);
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;
}
#endif