Home | History | Annotate | Download | only in drm 
      1 /**
      2  * \file drm_sarea.h
      3  * \brief SAREA definitions
      4  *
      5  * \author Michel Dnzer <michel (at) daenzer.net>
      6  */
      7 
      8 /*
      9  * Copyright 2002 Tungsten Graphics, Inc., Cedar Park, Texas.
     10  * All Rights Reserved.
     11  *
     12  * Permission is hereby granted, free of charge, to any person obtaining a
     13  * copy of this software and associated documentation files (the "Software"),
     14  * to deal in the Software without restriction, including without limitation
     15  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     16  * and/or sell copies of the Software, and to permit persons to whom the
     17  * Software is furnished to do so, subject to the following conditions:
     18  *
     19  * The above copyright notice and this permission notice (including the next
     20  * paragraph) shall be included in all copies or substantial portions of the
     21  * Software.
     22  *
     23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     24  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     25  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     26  * TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
     27  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     28  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     29  * OTHER DEALINGS IN THE SOFTWARE.
     30  */
     31 
     32 #ifndef _DRM_SAREA_H_
     33 #define _DRM_SAREA_H_
     34 
     35 #include "drm.h"
     36 
     37 /* SAREA area needs to be at least a page */
     38 #if defined(__alpha__)
     39 #define SAREA_MAX                       0x2000U
     40 #elif defined(__mips__)
     41 #define SAREA_MAX                       0x4000U
     42 #elif defined(__ia64__)
     43 #define SAREA_MAX                       0x10000U	/* 64kB */
     44 #else
     45 /* Intel 830M driver needs at least 8k SAREA */
     46 #define SAREA_MAX                       0x2000U
     47 #endif
     48 
     49 /** Maximum number of drawables in the SAREA */
     50 #define SAREA_MAX_DRAWABLES		256
     51 
     52 #define SAREA_DRAWABLE_CLAIMED_ENTRY    0x80000000
     53 
     54 /** SAREA drawable */
     55 struct drm_sarea_drawable {
     56 	unsigned int stamp;
     57 	unsigned int flags;
     58 };
     59 
     60 /** SAREA frame */
     61 struct drm_sarea_frame {
     62 	unsigned int x;
     63 	unsigned int y;
     64 	unsigned int width;
     65 	unsigned int height;
     66 	unsigned int fullscreen;
     67 };
     68 
     69 /** SAREA */
     70 struct drm_sarea {
     71     /** first thing is always the DRM locking structure */
     72 	struct drm_hw_lock lock;
     73     /** \todo Use readers/writer lock for drm_sarea::drawable_lock */
     74 	struct drm_hw_lock drawable_lock;
     75 	struct drm_sarea_drawable drawableTable[SAREA_MAX_DRAWABLES];	/**< drawables */
     76 	struct drm_sarea_frame frame;	/**< frame */
     77 	drm_context_t dummy_context;
     78 };
     79 
     80 typedef struct drm_sarea_drawable drm_sarea_drawable_t;
     81 typedef struct drm_sarea_frame drm_sarea_frame_t;
     82 typedef struct drm_sarea drm_sarea_t;
     83 
     84 #endif				/* _DRM_SAREA_H_ */
     85