1 /**
2  * \file sarea.h
3  * SAREA definitions.
4  *
5  * \author Kevin E. Martin <kevin@precisioninsight.com>
6  * \author Jens Owen <jens@tungstengraphics.com>
7  * \author Rickard E. (Rik) Faith <faith@valinux.com>
8  */
9 
10 /*
11  * Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
12  * Copyright 2000 VA Linux Systems, Inc.
13  * All Rights Reserved.
14  *
15  * Permission is hereby granted, free of charge, to any person obtaining a
16  * copy of this software and associated documentation files (the
17  * "Software"), to deal in the Software without restriction, including
18  * without limitation the rights to use, copy, modify, merge, publish,
19  * distribute, sub license, and/or sell copies of the Software, and to
20  * permit persons to whom the Software is furnished to do so, subject to
21  * the following conditions:
22  *
23  * The above copyright notice and this permission notice (including the
24  * next paragraph) shall be included in all copies or substantial portions
25  * of the Software.
26  *
27  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
28  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
29  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
30  * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
31  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
32  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
33  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
34  */
35 
36 
37 #ifndef _SAREA_H_
38 #define _SAREA_H_
39 
40 #include "xf86drm.h"
41 
42 /* SAREA area needs to be at least a page */
43 #if defined(__alpha__)
44 #define SAREA_MAX 			0x2000
45 #elif defined(__ia64__)
46 #define SAREA_MAX			0x10000		/* 64kB */
47 #else
48 /* Intel 830M driver needs at least 8k SAREA */
49 #define SAREA_MAX			0x2000
50 #endif
51 
52 #define SAREA_MAX_DRAWABLES 		256
53 
54 #define SAREA_DRAWABLE_CLAIMED_ENTRY	0x80000000
55 
56 /**
57  * SAREA per drawable information.
58  *
59  * \sa _XF86DRISAREA.
60  */
61 typedef struct _XF86DRISAREADrawable {
62     unsigned int	stamp;
63     unsigned int	flags;
64 } XF86DRISAREADrawableRec, *XF86DRISAREADrawablePtr;
65 
66 /**
67  * SAREA frame information.
68  *
69  * \sa  _XF86DRISAREA.
70  */
71 typedef struct _XF86DRISAREAFrame {
72     unsigned int        x;
73     unsigned int        y;
74     unsigned int        width;
75     unsigned int        height;
76     unsigned int        fullscreen;
77 } XF86DRISAREAFrameRec, *XF86DRISAREAFramePtr;
78 
79 /**
80  * SAREA definition.
81  */
82 typedef struct _XF86DRISAREA {
83     /** first thing is always the DRM locking structure */
84     drmLock			lock;
85     /** \todo Use readers/writer lock for drawable_lock */
86     drmLock			drawable_lock;
87     XF86DRISAREADrawableRec	drawableTable[SAREA_MAX_DRAWABLES];
88     XF86DRISAREAFrameRec        frame;
89     drm_context_t			dummy_context;
90 } XF86DRISAREARec, *XF86DRISAREAPtr;
91 
92 #endif
93