text: /**
   * \file sarea.h
   * SAREA definitions.
   *
   * \author Kevin E. Martin <kevin@precisioninsight.com>
   * \author Jens Owen <jens@tungstengraphics.com>
   * \author Rickard E. (Rik) Faith <faith@valinux.com>
   */
  
  /*
   * Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
   * Copyright 2000 VA Linux Systems, Inc.
   * All Rights Reserved.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the
   * "Software"), to deal in the Software without restriction, including
   * without limitation the rights to use, copy, modify, merge, publish,
   * distribute, sub license, and/or sell copies of the Software, and to
   * permit persons to whom the Software is furnished to do so, subject to
   * the following conditions:
   *
   * The above copyright notice and this permission notice (including the
   * next paragraph) shall be included in all copies or substantial portions
   * of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
   * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
   * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
   * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
   * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   */
  
  #ifndef _SAREA_H_
  #define _SAREA_H_
  
  #include "xf86drm.h"
  
  /* SAREA area needs to be at least a page */
  #if defined(__alpha__)
  #define SAREA_MAX 			0x2000
  #elif defined(__ia64__)
  #define SAREA_MAX			0x10000 /* 64kB */
  #else
  /* Intel 830M driver needs at least 8k SAREA */
  #define SAREA_MAX			0x2000
  #endif
  
  #define SAREA_MAX_DRAWABLES 		256
  
  #define SAREA_DRAWABLE_CLAIMED_ENTRY	0x80000000
  
  /**
   * SAREA per drawable information.
   *
   * \sa _XF86DRISAREA.
   */
  typedef struct _XF86DRISAREADrawable {
      unsigned int stamp;
      unsigned int flags;
  } XF86DRISAREADrawableRec, *XF86DRISAREADrawablePtr;
  
  /**
   * SAREA frame information.
   *
   * \sa  _XF86DRISAREA.
   */
  typedef struct _XF86DRISAREAFrame {
      unsigned int x;
      unsigned int y;
      unsigned int width;
      unsigned int height;
      unsigned int fullscreen;
  } XF86DRISAREAFrameRec, *XF86DRISAREAFramePtr;
  
  /**
   * SAREA definition.
   */
  typedef struct _XF86DRISAREA {
      /** first thing is always the DRM locking structure */
      drmLock lock;
      /** \todo Use readers/writer lock for drawable_lock */
      drmLock drawable_lock;
      XF86DRISAREADrawableRec drawableTable[SAREA_MAX_DRAWABLES];
      XF86DRISAREAFrameRec frame;
      drm_context_t dummy_context;
  } XF86DRISAREARec, *XF86DRISAREAPtr;
  
  typedef struct _XF86DRILSAREA {
      drmLock lock;
      drmLock otherLocks[31];
  } XF86DRILSAREARec, *XF86DRILSAREAPtr;
  
  #endif
  