src/glx/mini/sarea.h

   1 /**
   2  * \file sarea.h
   3  * \brief SAREA definitions.
   4  *
   5  * The SAREA is a memory region is shared by the DRM device, the X server and
   6  * the clients.
   7  *
   8  * This file defines its layout in user space.
   9  *
  10  * \author Kevin E. Martin <kevin@precisioninsight.com>
  11  * \author Jens Owen <jens@tungstengraphics.com>
  12  * \author Rickard E. (Rik) Faith <faith@valinux.com>
  13  */
  14
  15 /*
  16  * Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
  17  * Copyright 2000 VA Linux Systems, Inc.
  18  * All Rights Reserved.
  19  *
  20  * Permission is hereby granted, free of charge, to any person obtaining a
  21  * copy of this software and associated documentation files (the
  22  * "Software"), to deal in the Software without restriction, including
  23  * without limitation the rights to use, copy, modify, merge, publish,
  24  * distribute, sub license, and/or sell copies of the Software, and to
  25  * permit persons to whom the Software is furnished to do so, subject to
  26  * the following conditions:
  27  *
  28  * The above copyright notice and this permission notice (including the
  29  * next paragraph) shall be included in all copies or substantial portions
  30  * of the Software.
  31  *
  32  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  33  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  34  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  35  * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
  36  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  37  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  38  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  39  */
  40
  41 #ifndef _SAREA_H_
  42 #define _SAREA_H_
  43
  44 #include "xf86drm.h"
  45
  46 /* SAREA area needs to be at least a page */
  47 #if defined(__alpha__)
  48 #define SAREA_MAX                       0x2000
  49 #elif defined(__ia64__)
  50 #define SAREA_MAX                       0x10000         /* 64kB */
  51 #else
  52 /* Intel 830M driver needs at least 8k SAREA */
  53 #define SAREA_MAX                       0x2000
  54 #endif
  55
  56 #define SAREA_MAX_DRAWABLES             256
  57
  58 #define SAREA_DRAWABLE_CLAIMED_ENTRY    0x80000000
  59
  60 /**
  61  * \brief SAREA per drawable information.
  62  *
  63  * \sa _XF86DRISAREA.
  64  */
  65 typedef struct _XF86DRISAREADrawable {
  66     unsigned int        stamp;
  67     unsigned int        flags;
  68 } XF86DRISAREADrawableRec, *XF86DRISAREADrawablePtr;
  69
  70 /**
  71  * \brief SAREA frame information.
  72  *
  73  * \sa  _XF86DRISAREA.
  74  */
  75 typedef struct _XF86DRISAREAFrame {
  76     unsigned int        x;
  77     unsigned int        y;
  78     unsigned int        width;
  79     unsigned int        height;
  80     unsigned int        fullscreen;
  81 } XF86DRISAREAFrameRec, *XF86DRISAREAFramePtr;
  82
  83 /**
  84  * \brief SAREA definition.
  85  */
  86 typedef struct _XF86DRISAREA {
  87     /** first thing is always the DRM locking structure */
  88     drmLock                     lock;
  89     /** \todo Use readers/writer lock for drawable_lock */
  90     drmLock                     drawable_lock;
  91     XF86DRISAREADrawableRec     drawableTable[SAREA_MAX_DRAWABLES];
  92     XF86DRISAREAFrameRec        frame;
  93     drmContext                  dummy_context;
  94 } XF86DRISAREARec, *XF86DRISAREAPtr;
  95
  96 #endif