2 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
3 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
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:
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
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.
26 * Rickard E. (Rik) Faith <faith@valinux.com>
27 * Gareth Hughes <gareth@valinux.com>
29 * $FreeBSD: src/sys/dev/drm2/drm_drawable.c,v 1.1 2012/05/22 11:07:44 kib Exp $
32 /** @file drm_drawable.c
33 * This file implements ioctls to store information along with DRM drawables,
34 * such as the current set of cliprects for vblank-synced buffer swaps.
39 struct bsd_drm_drawable_info {
40 struct drm_drawable_info info;
42 RB_ENTRY(bsd_drm_drawable_info) tree;
46 drm_drawable_compare(struct bsd_drm_drawable_info *a,
47 struct bsd_drm_drawable_info *b)
49 if (a->handle > b->handle)
51 if (a->handle < b->handle)
56 RB_PROTOTYPE_STATIC(drawable_tree, bsd_drm_drawable_info, tree,
57 drm_drawable_compare);
58 RB_GENERATE_STATIC(drawable_tree, bsd_drm_drawable_info, tree,
59 drm_drawable_compare);
61 struct drm_drawable_info *
62 drm_get_drawable_info(struct drm_device *dev, int handle)
64 struct bsd_drm_drawable_info find, *result;
67 result = RB_FIND(drawable_tree, &dev->drw_head, &find);
72 int drm_adddraw(struct drm_device *dev, void *data, struct drm_file *file_priv)
74 struct drm_draw *draw = data;
75 struct bsd_drm_drawable_info *info;
77 info = kmalloc(sizeof(struct bsd_drm_drawable_info), DRM_MEM_DRAWABLE,
82 info->handle = alloc_unr(dev->drw_unrhdr);
83 spin_lock(&dev->drw_lock);
84 RB_INSERT(drawable_tree, &dev->drw_head, info);
85 draw->handle = info->handle;
86 spin_unlock(&dev->drw_lock);
88 DRM_DEBUG("%d\n", draw->handle);
93 int drm_rmdraw(struct drm_device *dev, void *data, struct drm_file *file_priv)
95 struct drm_draw *draw = (struct drm_draw *)data;
96 struct drm_drawable_info *info;
98 spin_lock(&dev->drw_lock);
99 info = drm_get_drawable_info(dev, draw->handle);
101 RB_REMOVE(drawable_tree, &dev->drw_head,
102 (struct bsd_drm_drawable_info *)info);
103 spin_unlock(&dev->drw_lock);
104 free_unr(dev->drw_unrhdr, draw->handle);
105 drm_free(info->rects, DRM_MEM_DRAWABLE);
106 drm_free(info, DRM_MEM_DRAWABLE);
109 spin_unlock(&dev->drw_lock);
114 int drm_update_draw(struct drm_device *dev, void *data,
115 struct drm_file *file_priv)
117 struct drm_drawable_info *info;
118 struct drm_update_draw *update = (struct drm_update_draw *)data;
121 info = drm_get_drawable_info(dev, update->handle);
125 switch (update->type) {
126 case DRM_DRAWABLE_CLIPRECTS:
127 spin_lock(&dev->drw_lock);
128 if (update->num != info->num_rects) {
129 drm_free(info->rects, DRM_MEM_DRAWABLE);
133 if (update->num == 0) {
134 spin_unlock(&dev->drw_lock);
137 if (info->rects == NULL) {
138 info->rects = kmalloc(sizeof(*info->rects) *
139 update->num, DRM_MEM_DRAWABLE, M_NOWAIT);
140 if (info->rects == NULL) {
141 spin_unlock(&dev->drw_lock);
144 info->num_rects = update->num;
146 /* For some reason the pointer arg is unsigned long long. */
147 ret = copyin((void *)(intptr_t)update->data, info->rects,
148 sizeof(*info->rects) * info->num_rects);
149 spin_unlock(&dev->drw_lock);
156 void drm_drawable_free_all(struct drm_device *dev)
158 struct bsd_drm_drawable_info *info, *next;
160 spin_lock(&dev->drw_lock);
161 for (info = RB_MIN(drawable_tree, &dev->drw_head);
162 info != NULL ; info = next) {
163 next = RB_NEXT(drawable_tree, &dev->drw_head, info);
164 RB_REMOVE(drawable_tree, &dev->drw_head,
165 (struct bsd_drm_drawable_info *)info);
166 spin_unlock(&dev->drw_lock);
167 free_unr(dev->drw_unrhdr, info->handle);
168 drm_free(info->info.rects, DRM_MEM_DRAWABLE);
169 drm_free(info, DRM_MEM_DRAWABLE);
170 spin_lock(&dev->drw_lock);
172 spin_unlock(&dev->drw_lock);