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01: /**
02:  * \file drm_sarea.h
03:  * \brief SAREA definitions
04:  *
05:  * \author Michel Dänzer <michel@daenzer.net>
06:  */
07: 
08: /*
09:  * 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(__ia64__)
41: #define SAREA_MAX                       0x10000U        /* 64kB */
42: #else
43: /* Intel 830M driver needs at least 8k SAREA */
44: #define SAREA_MAX                       0x2000U
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 */
53: struct drm_sarea_drawable {
54:         unsigned int stamp;
55:         unsigned int flags;
56: };
57: 
58: /** SAREA frame */
59: struct 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 */
68: struct 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: typedef struct drm_sarea_drawable drm_sarea_drawable_t;
79: typedef struct drm_sarea_frame drm_sarea_frame_t;
80: typedef struct drm_sarea drm_sarea_t;
81: 
82: #endif                          /* _DRM_SAREA_H_ */
83: 

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