77 lines
1.7 KiB
C
77 lines
1.7 KiB
C
/* SPDX-License-Identifier: MIT */
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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 <michel@daenzer.net>
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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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#ifndef _DRM_SAREA_H_
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#define _DRM_SAREA_H_
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#include "drm.h"
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#if defined(__cplusplus)
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extern "C" {
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#endif
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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(__mips__)
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#define SAREA_MAX 0x4000U
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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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#if defined(__cplusplus)
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}
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#endif
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#endif /* _DRM_SAREA_H_ */
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