/**

   * \file drm_sarea.h

   * \brief SAREA definitions
   *

   * \author Michel Dänzer <michel@daenzer.net>

   */
  
  /*
   * Copyright 2002 Tungsten Graphics, Inc., Cedar Park, Texas.
   * 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, sublicense,
   * 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 NONINFRINGEMENT.  IN NO EVENT SHALL
   * TUNGSTEN GRAPHICS 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 _DRM_SAREA_H_
  #define _DRM_SAREA_H_
  
  #include "drm.h"
  
  /* SAREA area needs to be at least a page */
  #if defined(__alpha__)

  #define SAREA_MAX                       0x2000U

  #elif defined(__ia64__)

  #define SAREA_MAX                       0x10000U	/* 64kB */

  #else
  /* Intel 830M driver needs at least 8k SAREA */

  #define SAREA_MAX                       0x2000U

  #endif
  
  /** Maximum number of drawables in the SAREA */

  #define SAREA_MAX_DRAWABLES		256

  
  #define SAREA_DRAWABLE_CLAIMED_ENTRY    0x80000000
  
  /** SAREA drawable */

  struct drm_sarea_drawable {

  	unsigned int stamp;
  	unsigned int flags;

  };

  
  /** SAREA frame */

  struct drm_sarea_frame {

  	unsigned int x;
  	unsigned int y;
  	unsigned int width;
  	unsigned int height;
  	unsigned int fullscreen;

  };

  
  /** SAREA */

  struct drm_sarea {

      /** first thing is always the DRM locking structure */

  	struct drm_hw_lock lock;

      /** \todo Use readers/writer lock for drm_sarea::drawable_lock */

  	struct drm_hw_lock drawable_lock;

  	struct drm_sarea_drawable drawableTable[SAREA_MAX_DRAWABLES];	/**< drawables */
  	struct drm_sarea_frame frame;	/**< frame */

  	drm_context_t dummy_context;

  };
  
  #ifndef __KERNEL__
  typedef struct drm_sarea_drawable drm_sarea_drawable_t;
  typedef struct drm_sarea_frame drm_sarea_frame_t;
  typedef struct drm_sarea drm_sarea_t;
  #endif

  #endif				/* _DRM_SAREA_H_ */