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author | rnoland <rnoland@FreeBSD.org> | 2010-01-31 14:25:29 +0000 |
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committer | rnoland <rnoland@FreeBSD.org> | 2010-01-31 14:25:29 +0000 |
commit | 04aaff5298149d2d2df6b4d11d782ff989614101 (patch) | |
tree | af15e53b9e0b6885d552ebd68a1fe78b560b474d /sys/dev/drm/drm_hashtab.h | |
parent | 23c4d0d9ded24602d1bba680bedba3b21d81cdc1 (diff) | |
download | FreeBSD-src-04aaff5298149d2d2df6b4d11d782ff989614101.zip FreeBSD-src-04aaff5298149d2d2df6b4d11d782ff989614101.tar.gz |
Import simple drm memory manager.
This is required for the VIA driver and at least some parts are needed
for GEM.
MFC after: 2 weeks
Diffstat (limited to 'sys/dev/drm/drm_hashtab.h')
-rw-r--r-- | sys/dev/drm/drm_hashtab.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/sys/dev/drm/drm_hashtab.h b/sys/dev/drm/drm_hashtab.h new file mode 100644 index 0000000..967022d --- /dev/null +++ b/sys/dev/drm/drm_hashtab.h @@ -0,0 +1,68 @@ +/************************************************************************** + * + * Copyright 2006 Tungsten Graphics, Inc., Bismack, ND. 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. + * + * + **************************************************************************/ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +/* + * Simple open hash tab implementation. + * + * Authors: + * Thomas Hellström <thomas-at-tungstengraphics-dot-com> + */ + +#ifndef DRM_HASHTAB_H +#define DRM_HASHTAB_H + +#define drm_hash_entry(_ptr, _type, _member) container_of(_ptr, _type, _member) + +struct drm_hash_item { + LIST_ENTRY(drm_hash_item) head; + unsigned long key; +}; + +struct drm_open_hash { + LIST_HEAD(drm_hash_item_list, drm_hash_item) *table; + unsigned int size; + unsigned int order; + unsigned long mask; +}; + +extern int drm_ht_create(struct drm_open_hash *ht, unsigned int order); +extern int drm_ht_insert_item(struct drm_open_hash *ht, struct drm_hash_item *item); +extern int drm_ht_just_insert_please(struct drm_open_hash *ht, struct drm_hash_item *item, + unsigned long seed, int bits, int shift, + unsigned long add); +extern int drm_ht_find_item(struct drm_open_hash *ht, unsigned long key, struct drm_hash_item **item); + +extern void drm_ht_verbose_list(struct drm_open_hash *ht, unsigned long key); +extern int drm_ht_remove_key(struct drm_open_hash *ht, unsigned long key); +extern int drm_ht_remove_item(struct drm_open_hash *ht, struct drm_hash_item *item); +extern void drm_ht_remove(struct drm_open_hash *ht); + +#endif |