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 #if defined(__cplusplus) 38 extern "C" { 39 #endif 40 41 /* SAREA area needs to be at least a page */ 42 #if defined(__alpha__) 43 #define SAREA_MAX 0x2000U 44 #elif defined(__mips__) 45 #define SAREA_MAX 0x4000U 46 #elif defined(__ia64__) 47 #define SAREA_MAX 0x10000U /* 64kB */ 48 #else 49 /* Intel 830M driver needs at least 8k SAREA */ 50 #define SAREA_MAX 0x2000U 51 #endif 52 53 /** Maximum number of drawables in the SAREA */ 54 #define SAREA_MAX_DRAWABLES 256 55 56 #define SAREA_DRAWABLE_CLAIMED_ENTRY 0x80000000 57 58 /** SAREA drawable */ 59 struct drm_sarea_drawable { 60 unsigned int stamp; 61 unsigned int flags; 62 }; 63 64 /** SAREA frame */ 65 struct drm_sarea_frame { 66 unsigned int x; 67 unsigned int y; 68 unsigned int width; 69 unsigned int height; 70 unsigned int fullscreen; 71 }; 72 73 /** SAREA */ 74 struct drm_sarea { 75 /** first thing is always the DRM locking structure */ 76 struct drm_hw_lock lock; 77 /** \todo Use readers/writer lock for drm_sarea::drawable_lock */ 78 struct drm_hw_lock drawable_lock; 79 struct drm_sarea_drawable drawableTable[SAREA_MAX_DRAWABLES]; /**< drawables */ 80 struct drm_sarea_frame frame; /**< frame */ 81 drm_context_t dummy_context; 82 }; 83 84 typedef struct drm_sarea_drawable drm_sarea_drawable_t; 85 typedef struct drm_sarea_frame drm_sarea_frame_t; 86 typedef struct drm_sarea drm_sarea_t; 87 88 #if defined(__cplusplus) 89 } 90 #endif 91 92 #endif /* _DRM_SAREA_H_ */ 93