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#ifndef _DRM_SAREA_H_
33#define _DRM_SAREA_H_
34
35#include "drm.h"
36
37/* SAREA area needs to be at least a page */
38#if defined(__alpha__)
39#define SAREA_MAX                       0x2000
40#elif defined(__ia64__)
41#define SAREA_MAX                       0x10000	/* 64kB */
42#else
43/* Intel 830M driver needs at least 8k SAREA */
44#define SAREA_MAX                       0x2000UL
45#endif
46
47/** Maximum number of drawables in the SAREA */
48#define SAREA_MAX_DRAWABLES		256
49
50#define SAREA_DRAWABLE_CLAIMED_ENTRY    0x80000000
51
52/** SAREA drawable */
53struct drm_sarea_drawable {
54	unsigned int stamp;
55	unsigned int flags;
56};
57
58/** SAREA frame */
59struct drm_sarea_frame {
60	unsigned int x;
61	unsigned int y;
62	unsigned int width;
63	unsigned int height;
64	unsigned int fullscreen;
65};
66
67/** SAREA */
68struct drm_sarea {
69    /** first thing is always the DRM locking structure */
70	struct drm_hw_lock lock;
71    /** \todo Use readers/writer lock for drm_sarea::drawable_lock */
72	struct drm_hw_lock drawable_lock;
73	struct drm_sarea_drawable drawableTable[SAREA_MAX_DRAWABLES];	/**< drawables */
74	struct drm_sarea_frame frame;	/**< frame */
75	drm_context_t dummy_context;
76};
77
78#ifndef __KERNEL__
79typedef struct drm_sarea_drawable drm_sarea_drawable_t;
80typedef struct drm_sarea_frame drm_sarea_frame_t;
81typedef struct drm_sarea drm_sarea_t;
82#endif
83
84#endif				/* _DRM_SAREA_H_ */
85