xref: /titanic_41/usr/src/uts/common/io/drm/drm_sarea.h (revision e92e3a8694f157faf8a9e44096a70ada86c556bf)
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 /* BEGIN CSTYLED */
32 #ifndef _DRM_SAREA_H
33 #define _DRM_SAREA_H
34 
35 #pragma ident	"%Z%%M%	%I%	%E% SMI"
36 
37 #include "drm.h"
38 
39 /* SAREA area needs to be at least a page */
40 #if defined(__alpha__)
41 #define SAREA_MAX                       0x2000
42 #elif defined(__ia64__)
43 #define SAREA_MAX                       0x10000	/* 64kB */
44 #else
45 /* Intel 830M driver needs at least 8k SAREA */
46 #define SAREA_MAX                       0x2000UL
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 */
55 typedef struct drm_sarea_drawable {
56 	unsigned int stamp;
57 	unsigned int flags;
58 } drm_sarea_drawable_t;
59 
60 /** SAREA frame */
61 typedef struct drm_sarea_frame {
62 	unsigned int x;
63 	unsigned int y;
64 	unsigned int width;
65 	unsigned int height;
66 	unsigned int fullscreen;
67 } drm_sarea_frame_t;
68 
69 /** SAREA */
70 typedef struct drm_sarea {
71     /** first thing is always the DRM locking structure */
72 	drm_hw_lock_t lock;
73     /** \todo Use readers/writer lock for drm_sarea::drawable_lock */
74 	drm_hw_lock_t drawable_lock;
75 	drm_sarea_drawable_t drawableTable[SAREA_MAX_DRAWABLES];	/**< drawables */
76 	drm_sarea_frame_t frame;	/**< frame */
77 	drm_context_t dummy_context;
78 } drm_sarea_t;
79 
80 /* END CSTYLED */
81 #endif /* _DRM_SAREA_H */
82