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author | Jerome Glisse <glisse@freedesktop.org> | 2009-04-08 17:11:16 +0200 |
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committer | Dave Airlie <airlied@redhat.com> | 2009-06-12 15:56:31 +1000 |
commit | 249d6048ca98b5452105b0824abac1275661b8e3 (patch) | |
tree | 5e8e89288ec6f6a278fcb819ea49d0d9984576fd /include/drm/drm_mm.h | |
parent | 715cbb05c935e8a4306a730d14a72d5af881523e (diff) | |
download | linux-stable-249d6048ca98b5452105b0824abac1275661b8e3.tar.gz linux-stable-249d6048ca98b5452105b0824abac1275661b8e3.tar.bz2 linux-stable-249d6048ca98b5452105b0824abac1275661b8e3.zip |
drm: Split out the mm declarations in a separate header. Add atomic operations.
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 <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'include/drm/drm_mm.h')
-rw-r--r-- | include/drm/drm_mm.h | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/include/drm/drm_mm.h b/include/drm/drm_mm.h new file mode 100644 index 000000000000..5662f4278ef3 --- /dev/null +++ b/include/drm/drm_mm.h @@ -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 |