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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/include/drm/drm_sarea.h
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/**

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 * \file drm_sarea.h

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 * \brief SAREA definitions

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 *

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 * \author Michel Dänzer <[email protected]>

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 */

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/*

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 * Copyright 2002 Tungsten Graphics, Inc., Cedar Park, Texas.

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 * All Rights Reserved.

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 *

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 * Permission is hereby granted, free of charge, to any person obtaining a

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 * copy of this software and associated documentation files (the "Software"),

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 * to deal in the Software without restriction, including without limitation

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 * the rights to use, copy, modify, merge, publish, distribute, sublicense,

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 * and/or sell copies of the Software, and to permit persons to whom the

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 * Software is furnished to do so, subject to the following conditions:

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 *

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 * The above copyright notice and this permission notice (including the next

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 * paragraph) shall be included in all copies or substantial portions of the

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 * Software.

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 *

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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

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 * TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR

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 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,

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 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

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 * OTHER DEALINGS IN THE SOFTWARE.

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 */

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#ifndef _DRM_SAREA_H_

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#define _DRM_SAREA_H_

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#include "drm.h"

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/* SAREA area needs to be at least a page */

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#if defined(__alpha__)

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#define SAREA_MAX                       0x2000U

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#elif defined(__ia64__)

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#define SAREA_MAX                       0x10000U	/* 64kB */

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#else

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

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#define SAREA_MAX                       0x2000U

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#endif

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

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#define SAREA_MAX_DRAWABLES		256

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#define SAREA_DRAWABLE_CLAIMED_ENTRY    0x80000000

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/** SAREA drawable */

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struct drm_sarea_drawable {

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	unsigned int stamp;

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	unsigned int flags;

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};

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/** SAREA frame */

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struct drm_sarea_frame {

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	unsigned int x;

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	unsigned int y;

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	unsigned int width;

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	unsigned int height;

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	unsigned int fullscreen;

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};

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/** SAREA */

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struct drm_sarea {

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

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	struct drm_hw_lock lock;

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

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	struct drm_hw_lock drawable_lock;

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

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	struct drm_sarea_frame frame;	/**< frame */

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	drm_context_t dummy_context;

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};

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#ifndef __KERNEL__

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typedef struct drm_sarea_drawable drm_sarea_drawable_t;

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typedef struct drm_sarea_frame drm_sarea_frame_t;

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typedef struct drm_sarea drm_sarea_t;

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#endif

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#endif				/* _DRM_SAREA_H_ */

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