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/* SPDX-License-Identifier: MIT */
/**
* \file drm_sarea.h
* \brief SAREA definitions
*
* \author Michel Dänzer <michel@daenzer.net>
*/
/*
* Copyright 2002 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*/
#ifndef _DRM_SAREA_H_
#define _DRM_SAREA_H_
#include "drm.h"
#if defined(__cplusplus)
extern "C" {
#endif
/* 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
#if defined(__cplusplus)
}
#endif
#endif /* _DRM_SAREA_H_ */
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