1 /* SPDX-License-Identifier: MIT */ 2 /** 3 * \file drm_sarea.h 4 * \brief SAREA definitions 5 * 6 * \author Michel Dänzer <michel@daenzer.net> 7 */ 8 9 /* 10 * Copyright 2002 Tungsten Graphics, Inc., Cedar Park, Texas. 11 * All Rights Reserved. 12 */ 13 14 #ifndef _DRM_SAREA_H_ 15 #define _DRM_SAREA_H_ 16 17 #include "drm.h" 18 19 #if defined(__cplusplus) 20 extern "C" { 21 #endif 22 23 /* SAREA area needs to be at least a page */ 24 #if defined(__alpha__) 25 #define SAREA_MAX 0x2000U 26 #elif defined(__mips__) 27 #define SAREA_MAX 0x4000U 28 #elif defined(__ia64__) 29 #define SAREA_MAX 0x10000U /* 64kB */ 30 #else 31 /* Intel 830M driver needs at least 8k SAREA */ 32 #define SAREA_MAX 0x2000U 33 #endif 34 35 /** Maximum number of drawables in the SAREA */ 36 #define SAREA_MAX_DRAWABLES 256 37 38 #define SAREA_DRAWABLE_CLAIMED_ENTRY 0x80000000 39 40 /** SAREA drawable */ 41 struct drm_sarea_drawable { 42 unsigned int stamp; 43 unsigned int flags; 44 }; 45 46 /** SAREA frame */ 47 struct drm_sarea_frame { 48 unsigned int x; 49 unsigned int y; 50 unsigned int width; 51 unsigned int height; 52 unsigned int fullscreen; 53 }; 54 55 /** SAREA */ 56 struct drm_sarea { 57 /** first thing is always the DRM locking structure */ 58 struct drm_hw_lock lock; 59 /** \todo Use readers/writer lock for drm_sarea::drawable_lock */ 60 struct drm_hw_lock drawable_lock; 61 struct drm_sarea_drawable drawableTable[SAREA_MAX_DRAWABLES]; /**< drawables */ 62 struct drm_sarea_frame frame; /**< frame */ 63 drm_context_t dummy_context; 64 }; 65 66 #ifndef __KERNEL__ 67 typedef struct drm_sarea_drawable drm_sarea_drawable_t; 68 typedef struct drm_sarea_frame drm_sarea_frame_t; 69 typedef struct drm_sarea drm_sarea_t; 70 #endif 71 72 #if defined(__cplusplus) 73 } 74 #endif 75 76 #endif /* _DRM_SAREA_H_ */ 77