/**
* \file drm_sarea.h
* \brief SAREA definitions
*
* \author Michel Dänzer <[email protected]>
*/

/*
* 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/drm.h>

/* SAREA area needs to be at least a page */
#if defined(__alpha__)
#define SAREA_MAX 0x2000U
#elif defined(__mips__)
#define SAREA_MAX 0x4000U
#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_ */