1 /*- 2 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. 3 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the next 14 * paragraph) shall be included in all copies or substantial portions of the 15 * Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 23 * OTHER DEALINGS IN THE SOFTWARE. 24 * 25 * Authors: 26 * Rickard E. (Rik) Faith <faith (at) valinux.com> 27 * Gareth Hughes <gareth (at) valinux.com> 28 * 29 */ 30 31 /** @file drm_drawable.c 32 * This file implements ioctls to store information along with DRM drawables, 33 * such as the current set of cliprects for vblank-synced buffer swaps. 34 */ 35 36 #include "drmP.h" 37 38 struct bsd_drm_drawable_info { 39 struct drm_drawable_info info; 40 int handle; 41 RB_ENTRY(bsd_drm_drawable_info) tree; 42 }; 43 44 static int 45 drm_drawable_compare(struct bsd_drm_drawable_info *a, 46 struct bsd_drm_drawable_info *b) 47 { 48 if (a->handle > b->handle) 49 return 1; 50 if (a->handle < b->handle) 51 return -1; 52 return 0; 53 } 54 55 RB_GENERATE_STATIC(drawable_tree, bsd_drm_drawable_info, tree, 56 drm_drawable_compare); 57 58 struct drm_drawable_info * 59 drm_get_drawable_info(struct drm_device *dev, int handle) 60 { 61 struct bsd_drm_drawable_info find, *result; 62 63 find.handle = handle; 64 result = RB_FIND(drawable_tree, &dev->drw_head, &find); 65 66 return &result->info; 67 } 68 69 int drm_adddraw(struct drm_device *dev, void *data, struct drm_file *file_priv) 70 { 71 struct drm_draw *draw = data; 72 struct bsd_drm_drawable_info *info; 73 74 info = malloc(sizeof(struct bsd_drm_drawable_info), DRM_MEM_DRAWABLE, 75 M_NOWAIT | M_ZERO); 76 if (info == NULL) 77 return ENOMEM; 78 79 #if defined(__FreeBSD__) 80 info->handle = alloc_unr(dev->drw_unrhdr); 81 #endif 82 DRM_SPINLOCK(&dev->drw_lock); 83 #if defined(__NetBSD__) 84 info->handle = ++dev->drw_no; 85 #endif 86 RB_INSERT(drawable_tree, &dev->drw_head, info); 87 draw->handle = info->handle; 88 DRM_SPINUNLOCK(&dev->drw_lock); 89 90 DRM_DEBUG("%d\n", draw->handle); 91 92 return 0; 93 } 94 95 int drm_rmdraw(struct drm_device *dev, void *data, struct drm_file *file_priv) 96 { 97 struct drm_draw *draw = (struct drm_draw *)data; 98 struct drm_drawable_info *info; 99 100 DRM_SPINLOCK(&dev->drw_lock); 101 info = drm_get_drawable_info(dev, draw->handle); 102 if (info != NULL) { 103 RB_REMOVE(drawable_tree, &dev->drw_head, 104 (struct bsd_drm_drawable_info *)info); 105 DRM_SPINUNLOCK(&dev->drw_lock); 106 #if defined(__FreeBSD__) 107 free_unr(dev->drw_unrhdr, draw->handle); 108 #endif 109 if (info->rects) 110 free(info->rects, DRM_MEM_DRAWABLE); 111 free(info, DRM_MEM_DRAWABLE); 112 return 0; 113 } else { 114 DRM_SPINUNLOCK(&dev->drw_lock); 115 return EINVAL; 116 } 117 } 118 119 int drm_update_draw(struct drm_device *dev, void *data, 120 struct drm_file *file_priv) 121 { 122 struct drm_drawable_info *info; 123 struct drm_update_draw *update = (struct drm_update_draw *)data; 124 int ret; 125 126 info = drm_get_drawable_info(dev, update->handle); 127 if (info == NULL) 128 return EINVAL; 129 130 switch (update->type) { 131 case DRM_DRAWABLE_CLIPRECTS: 132 DRM_SPINLOCK(&dev->drw_lock); 133 if (update->num != info->num_rects) { 134 if (info->rects) 135 free(info->rects, DRM_MEM_DRAWABLE); 136 info->rects = NULL; 137 info->num_rects = 0; 138 } 139 if (update->num == 0) { 140 DRM_SPINUNLOCK(&dev->drw_lock); 141 return 0; 142 } 143 if (info->rects == NULL) { 144 info->rects = malloc(sizeof(*info->rects) * 145 update->num, DRM_MEM_DRAWABLE, M_NOWAIT); 146 if (info->rects == NULL) { 147 DRM_SPINUNLOCK(&dev->drw_lock); 148 return ENOMEM; 149 } 150 info->num_rects = update->num; 151 } 152 /* For some reason the pointer arg is unsigned long long. */ 153 ret = copyin((void *)(intptr_t)update->data, info->rects, 154 sizeof(*info->rects) * info->num_rects); 155 DRM_SPINUNLOCK(&dev->drw_lock); 156 return ret; 157 default: 158 return EINVAL; 159 } 160 } 161 162 void drm_drawable_free_all(struct drm_device *dev) 163 { 164 struct bsd_drm_drawable_info *info, *next; 165 166 DRM_SPINLOCK(&dev->drw_lock); 167 for (info = RB_MIN(drawable_tree, &dev->drw_head); 168 info != NULL ; info = next) { 169 next = RB_NEXT(drawable_tree, &dev->drw_head, info); 170 RB_REMOVE(drawable_tree, &dev->drw_head, 171 (struct bsd_drm_drawable_info *)info); 172 DRM_SPINUNLOCK(&dev->drw_lock); 173 #if defined(__FreeBSD__) 174 free_unr(dev->drw_unrhdr, info->handle); 175 #endif 176 if (info->info.rects) 177 free(info->info.rects, DRM_MEM_DRAWABLE); 178 free(info, DRM_MEM_DRAWABLE); 179 DRM_SPINLOCK(&dev->drw_lock); 180 } 181 DRM_SPINUNLOCK(&dev->drw_lock); 182 } 183
Indexes created Sun Sep 21 16:09:51 GMT 2025