usr/src/uts/common/io/drm/drm_sarea.h

   1 /*
   2  * \file drm_sarea.h
   3  * \brief SAREA definitions
   4  *
   5  * \author Michel D�zer <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 /* BEGIN CSTYLED */
  32 #ifndef _DRM_SAREA_H
  33 #define _DRM_SAREA_H
  34
  35 #pragma ident   "%Z%%M% %I%     %E% SMI"
  36
  37 #include "drm.h"
  38
  39 /* SAREA area needs to be at least a page */
  40 #if defined(__alpha__)
  41 #define SAREA_MAX                       0x2000
  42 #elif defined(__ia64__)
  43 #define SAREA_MAX                       0x10000 /* 64kB */
  44 #else
  45 /* Intel 830M driver needs at least 8k SAREA */
  46 #define SAREA_MAX                       0x2000UL
  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 typedef struct drm_sarea_drawable {
  56         unsigned int stamp;
  57         unsigned int flags;
  58 } drm_sarea_drawable_t;
  59
  60 /** SAREA frame */
  61 typedef 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 } drm_sarea_frame_t;
  68
  69 /** SAREA */
  70 typedef struct drm_sarea {
  71     /** first thing is always the DRM locking structure */
  72         drm_hw_lock_t lock;
  73     /** \todo Use readers/writer lock for drm_sarea::drawable_lock */
  74         drm_hw_lock_t drawable_lock;
  75         drm_sarea_drawable_t drawableTable[SAREA_MAX_DRAWABLES];        /**< drawables */
  76         drm_sarea_frame_t frame;        /**< frame */
  77         drm_context_t dummy_context;
  78 } drm_sarea_t;
  79
  80 /* END CSTYLED */
  81 #endif /* _DRM_SAREA_H */