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  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.