include/uapi/drm/drm_sarea.h

   1 /**
   2  * \file drm_sarea.h
   3  * \brief SAREA definitions
   4  *
   5  * \author Michel Dänzer <michel@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 #ifndef __KERNEL__
  81 typedef struct drm_sarea_drawable drm_sarea_drawable_t;
  82 typedef struct drm_sarea_frame drm_sarea_frame_t;
  83 typedef struct drm_sarea drm_sarea_t;
  84 #endif
  85
  86 #endif                          /* _DRM_SAREA_H_ */