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      1 /**
      2  * \file dri_sarea.h
      3  * SAREA definitions.
      4  *
      5  * \author Kevin E. Martin <kevin (at) precisioninsight.com>
      6  * \author Jens Owen <jowen (at) vmware.com>
      7  * \author Rickard E. (Rik) Faith <faith (at) valinux.com>
      8  */
      9 
     10 /*
     11  * Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
     12  * Copyright 2000 VA Linux Systems, Inc.
     13  * All Rights Reserved.
     14  *
     15  * Permission is hereby granted, free of charge, to any person obtaining a
     16  * copy of this software and associated documentation files (the
     17  * "Software"), to deal in the Software without restriction, including
     18  * without limitation the rights to use, copy, modify, merge, publish,
     19  * distribute, sub license, and/or sell copies of the Software, and to
     20  * permit persons to whom the Software is furnished to do so, subject to
     21  * the following conditions:
     22  *
     23  * The above copyright notice and this permission notice (including the
     24  * next paragraph) shall be included in all copies or substantial portions
     25  * of the Software.
     26  *
     27  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
     28  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     29  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
     30  * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
     31  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
     32  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
     33  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     34  */
     35 
     36 
     37 #ifndef _SAREA_H_
     38 #define _SAREA_H_
     39 
     40 #include "xf86drm.h"
     41 
     42 /* SAREA area needs to be at least a page */
     43 #if defined(__alpha__)
     44 #define SAREA_MAX 			0x2000
     45 #elif defined(__ia64__)
     46 #define SAREA_MAX			0x10000		/* 64kB */
     47 #else
     48 /* Intel 830M driver needs at least 8k SAREA */
     49 #define SAREA_MAX			0x2000
     50 #endif
     51 
     52 #define SAREA_MAX_DRAWABLES 		256
     53 
     54 #define SAREA_DRAWABLE_CLAIMED_ENTRY	0x80000000
     55 
     56 /**
     57  * SAREA per drawable information.
     58  *
     59  * \sa _XF86DRISAREA.
     60  */
     61 typedef struct _XF86DRISAREADrawable {
     62     unsigned int	stamp;
     63     unsigned int	flags;
     64 } XF86DRISAREADrawableRec, *XF86DRISAREADrawablePtr;
     65 
     66 /**
     67  * SAREA frame information.
     68  *
     69  * \sa  _XF86DRISAREA.
     70  */
     71 typedef struct _XF86DRISAREAFrame {
     72     unsigned int        x;
     73     unsigned int        y;
     74     unsigned int        width;
     75     unsigned int        height;
     76     unsigned int        fullscreen;
     77 } XF86DRISAREAFrameRec, *XF86DRISAREAFramePtr;
     78 
     79 /**
     80  * SAREA definition.
     81  */
     82 typedef struct _XF86DRISAREA {
     83     /** first thing is always the DRM locking structure */
     84     drmLock			lock;
     85     /** \todo Use readers/writer lock for drawable_lock */
     86     drmLock			drawable_lock;
     87     XF86DRISAREADrawableRec	drawableTable[SAREA_MAX_DRAWABLES];
     88     XF86DRISAREAFrameRec        frame;
     89     drm_context_t			dummy_context;
     90 } XF86DRISAREARec, *XF86DRISAREAPtr;
     91 
     92 #endif
     93