1/*
2 * Copyright 2007 Nouveau Project
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 AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
18 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
19 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
22
23#ifndef __NOUVEAU_CHANNEL_H__
24#define __NOUVEAU_CHANNEL_H__
25
26struct nouveau_subchannel {
27	struct nouveau_grobj *gr;
28	unsigned sequence;
29};
30
31struct nouveau_channel {
32	struct nouveau_device *device;
33	int id;
34
35	struct nouveau_pushbuf *pushbuf;
36
37	struct nouveau_grobj *nullobj;
38	struct nouveau_grobj *vram;
39	struct nouveau_grobj *gart;
40
41	void *user_private;
42	void (*hang_notify)(struct nouveau_channel *);
43	void (*flush_notify)(struct nouveau_channel *);
44
45	struct nouveau_subchannel subc[8];
46	unsigned subc_sequence;
47};
48
49int
50nouveau_channel_alloc(struct nouveau_device *, uint32_t fb, uint32_t tt,
51		      struct nouveau_channel **);
52
53void
54nouveau_channel_free(struct nouveau_channel **);
55
56#endif
57