text: /**
   * \file drm_sarea.h
   * \brief SAREA definitions
   *
   * \author Michel D�zer <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.
   */
  
  #include <sys/cdefs.h>
  __FBSDID("$FreeBSD: src/sys/dev/drm/drm_sarea.h,v 1.6 2005/11/28 23:13:52 anholt Exp $");
  
  #ifndef _DRM_SAREA_H_
  #define _DRM_SAREA_H_
  
  #include "dev/drm/drm.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
  
  /** Maximum number of drawables in the SAREA */
  #define SAREA_MAX_DRAWABLES 		256
  
  #define SAREA_DRAWABLE_CLAIMED_ENTRY    0x80000000
  
  /** SAREA drawable */
  typedef struct drm_sarea_drawable {
  	unsigned int stamp;
  	unsigned int flags;
  } drm_sarea_drawable_t;
  
  /** SAREA frame */
  typedef struct drm_sarea_frame {
  	unsigned int x;
  	unsigned int y;
  	unsigned int width;
  	unsigned int height;
  	unsigned int fullscreen;
  } drm_sarea_frame_t;
  
  /** SAREA */
  typedef struct drm_sarea {
      /** first thing is always the DRM locking structure */
  	drm_hw_lock_t lock;
      /** \todo Use readers/writer lock for drm_sarea::drawable_lock */
  	drm_hw_lock_t drawable_lock;
  	drm_sarea_drawable_t drawableTable[SAREA_MAX_DRAWABLES];	/**< drawables */
  	drm_sarea_frame_t frame;	/**< frame */
  	drm_context_t dummy_context;
  } drm_sarea_t;
  
  #endif				/* _DRM_SAREA_H_ */
  