1/*
 2 * Copyright 2010 Red Hat Inc.
 3 *
 4 * Permission is hereby granted, free of charge, to any person obtaining a
 5 * copy of this software and associated documentation files (the "Software"),
 6 * to deal in the Software without restriction, including without limitation
 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 8 * and/or sell copies of the Software, and to permit persons to whom the
 9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Ben Skeggs
23 */
24
25#ifndef __NOUVEAU_RAMHT_H__
26#define __NOUVEAU_RAMHT_H__
27
28struct nouveau_ramht_entry {
29	struct list_head head;
30	struct nouveau_channel *channel;
31	struct nouveau_gpuobj *gpuobj;
32	u32 handle;
33};
34
35struct nouveau_ramht {
36	struct drm_device *dev;
37	struct kref refcount;
38	spinlock_t lock;
39	struct nouveau_gpuobj *gpuobj;
40	struct list_head entries;
41	int bits;
42};
43
44extern int  nouveau_ramht_new(struct drm_device *, struct nouveau_gpuobj *,
45			      struct nouveau_ramht **);
46extern void nouveau_ramht_ref(struct nouveau_ramht *, struct nouveau_ramht **,
47			      struct nouveau_channel *unref_channel);
48
49extern int  nouveau_ramht_insert(struct nouveau_channel *, u32 handle,
50				 struct nouveau_gpuobj *);
51extern int  nouveau_ramht_remove(struct nouveau_channel *, u32 handle);
52extern struct nouveau_gpuobj *
53nouveau_ramht_find(struct nouveau_channel *chan, u32 handle);
54
55#endif