02d42f344c
The entity (device) has a locking SAREA and a master file descriptor that optionally isn't closed between server generation. The locking SAREA contains the device hardware lock. Each DRI screen creates an new SAREA containing the drawable lock, drawable-and private info, the drawable SAREA. The first screen optionally shares its drawable SAREA with the device SAREA. Default is to close the master descriptor between server generations, and to share the drawable SAREA of the first screen with the device locking SAREA. Thus we should (hopefully) have full backwards compatibility. Mesa changes to support single-device multiple screens are pending.
98 lines
2.9 KiB
C
98 lines
2.9 KiB
C
/**
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* \file sarea.h
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* SAREA definitions.
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*
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* \author Kevin E. Martin <kevin@precisioninsight.com>
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* \author Jens Owen <jens@tungstengraphics.com>
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* \author Rickard E. (Rik) Faith <faith@valinux.com>
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*/
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/*
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* Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
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* Copyright 2000 VA Linux Systems, Inc.
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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
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef _SAREA_H_
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#define _SAREA_H_
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#include "xf86drm.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 0x2000
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#elif defined(__ia64__)
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#define SAREA_MAX 0x10000 /* 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 0x2000
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#endif
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#define SAREA_MAX_DRAWABLES 256
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#define SAREA_DRAWABLE_CLAIMED_ENTRY 0x80000000
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/**
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* SAREA per drawable information.
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*
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* \sa _XF86DRISAREA.
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*/
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typedef struct _XF86DRISAREADrawable {
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unsigned int stamp;
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unsigned int flags;
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} XF86DRISAREADrawableRec, *XF86DRISAREADrawablePtr;
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/**
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* SAREA frame information.
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*
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* \sa _XF86DRISAREA.
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*/
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typedef struct _XF86DRISAREAFrame {
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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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} XF86DRISAREAFrameRec, *XF86DRISAREAFramePtr;
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/**
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* SAREA definition.
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*/
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typedef struct _XF86DRISAREA {
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/** first thing is always the DRM locking structure */
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drmLock lock;
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/** \todo Use readers/writer lock for drawable_lock */
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drmLock drawable_lock;
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XF86DRISAREADrawableRec drawableTable[SAREA_MAX_DRAWABLES];
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XF86DRISAREAFrameRec frame;
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drm_context_t dummy_context;
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} XF86DRISAREARec, *XF86DRISAREAPtr;
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typedef struct _XF86DRILSAREA {
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drmLock lock;
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drmLock otherLocks[31];
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} XF86DRILSAREARec, *XF86DRILSAREAPtr;
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#endif
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