1/**
2 * \file drm_sarea.h
3 * \brief SAREA definitions
4 *
5 * \author Michel D�zer <michel@daenzer.net>
6 */
7
8/*-
9 * Copyright 2002 Tungsten Graphics, Inc., Cedar Park, Texas.
10 * All Rights Reserved.
11 *
12 * Permission is hereby granted, free of charge, to any person obtaining a
13 * copy of this software and associated documentation files (the "Software"),
14 * to deal in the Software without restriction, including without limitation
15 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
16 * and/or sell copies of the Software, and to permit persons to whom the
17 * Software is furnished to do so, subject to the following conditions:
18 *
19 * The above copyright notice and this permission notice (including the next
20 * paragraph) shall be included in all copies or substantial portions of the
21 * Software.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
24 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
25 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
26 * TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
27 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
28 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
29 * OTHER DEALINGS IN THE SOFTWARE.
30 */
31
32#include <sys/cdefs.h>
33__FBSDID("$FreeBSD$");
34
35#ifndef _DRM_SAREA_H_
36#define _DRM_SAREA_H_
37
38#include "dev/drm/drm.h"
39
40/* SAREA area needs to be at least a page */
41#if defined(__alpha__)
42#define SAREA_MAX                       0x2000
43#elif defined(__ia64__)
44#define SAREA_MAX                       0x10000	/* 64kB */
45#else
46/* Intel 830M driver needs at least 8k SAREA */
47#define SAREA_MAX                       0x2000UL
48#endif
49
50/** Maximum number of drawables in the SAREA */
51#define SAREA_MAX_DRAWABLES		256
52
53#define SAREA_DRAWABLE_CLAIMED_ENTRY    0x80000000
54
55/** SAREA drawable */
56struct drm_sarea_drawable {
57	unsigned int stamp;
58	unsigned int flags;
59};
60
61/** SAREA frame */
62struct drm_sarea_frame {
63	unsigned int x;
64	unsigned int y;
65	unsigned int width;
66	unsigned int height;
67	unsigned int fullscreen;
68};
69
70/** SAREA */
71struct drm_sarea {
72    /** first thing is always the DRM locking structure */
73	struct drm_hw_lock lock;
74    /** \todo Use readers/writer lock for drm_sarea::drawable_lock */
75	struct drm_hw_lock drawable_lock;
76	struct drm_sarea_drawable drawableTable[SAREA_MAX_DRAWABLES];	/**< drawables */
77	struct drm_sarea_frame frame;	/**< frame */
78	drm_context_t dummy_context;
79};
80
81#ifndef __KERNEL__
82typedef struct drm_sarea_drawable drm_sarea_drawable_t;
83typedef struct drm_sarea_frame drm_sarea_frame_t;
84typedef struct drm_sarea drm_sarea_t;
85#endif
86
87#endif				/* _DRM_SAREA_H_ */
88