drm_sarea.h revision 224b54f69543a5c0ec18f99bd717d2b724582eb6 
1/**
2 * \file drm_sarea.h
3 * \brief SAREA definitions
4 *
5 * \author Michel Dänzer <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/drm.h>
36
37/* SAREA area needs to be at least a page */
38#if defined(__alpha__)
39#define SAREA_MAX                       0x2000U
40#elif defined(__mips__)
41#define SAREA_MAX                       0x4000U
42#elif defined(__ia64__)
43#define SAREA_MAX                       0x10000U	/* 64kB */
44#else
45/* Intel 830M driver needs at least 8k SAREA */
46#define SAREA_MAX                       0x2000U
47#endif
48
49/** Maximum number of drawables in the SAREA */
50#define SAREA_MAX_DRAWABLES		256
51
52#define SAREA_DRAWABLE_CLAIMED_ENTRY    0x80000000
53
54/** SAREA drawable */
55struct drm_sarea_drawable {
56	unsigned int stamp;
57	unsigned int flags;
58};
59
60/** SAREA frame */
61struct drm_sarea_frame {
62	unsigned int x;
63	unsigned int y;
64	unsigned int width;
65	unsigned int height;
66	unsigned int fullscreen;
67};
68
69/** SAREA */
70struct drm_sarea {
71    /** first thing is always the DRM locking structure */
72	struct drm_hw_lock lock;
73    /** \todo Use readers/writer lock for drm_sarea::drawable_lock */
74	struct drm_hw_lock drawable_lock;
75	struct drm_sarea_drawable drawableTable[SAREA_MAX_DRAWABLES];	/**< drawables */
76	struct drm_sarea_frame frame;	/**< frame */
77	drm_context_t dummy_context;
78};
79
80#ifndef __KERNEL__
81typedef struct drm_sarea_drawable drm_sarea_drawable_t;
82typedef struct drm_sarea_frame drm_sarea_frame_t;
83typedef struct drm_sarea drm_sarea_t;
84#endif
85
86#endif				/* _DRM_SAREA_H_ */
87