5 * \author Rickard E. (Rik) Faith <faith@valinux.com>
6 * \author Gareth Hughes <gareth@valinux.com>
7 * \author Michel Dänzer <michel@tungstengraphics.com>
11 * Created: Tue Feb 2 08:37:54 1999 by faith@valinux.com
13 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
14 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
15 * Copyright 2006 Tungsten Graphics, Inc., Bismarck, North Dakota.
16 * All Rights Reserved.
18 * Permission is hereby granted, free of charge, to any person obtaining a
19 * copy of this software and associated documentation files (the "Software"),
20 * to deal in the Software without restriction, including without limitation
21 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
22 * and/or sell copies of the Software, and to permit persons to whom the
23 * Software is furnished to do so, subject to the following conditions:
25 * The above copyright notice and this permission notice (including the next
26 * paragraph) shall be included in all copies or substantial portions of the
29 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
30 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
31 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
32 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
33 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
34 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
35 * OTHER DEALINGS IN THE SOFTWARE.
41 * Allocate drawable ID and memory to store information about it.
43 int drm_adddraw(struct drm_device *dev, void *data, struct drm_file *file_priv)
45 unsigned long irqflags;
46 struct drm_draw *draw = data;
51 if (idr_pre_get(&dev->drw_idr, GFP_KERNEL) == 0) {
52 DRM_ERROR("Out of memory expanding drawable idr\n");
56 spin_lock_irqsave(&dev->drw_lock, irqflags);
57 ret = idr_get_new_above(&dev->drw_idr, NULL, 1, &new_id);
59 spin_unlock_irqrestore(&dev->drw_lock, irqflags);
63 spin_unlock_irqrestore(&dev->drw_lock, irqflags);
65 draw->handle = new_id;
67 DRM_DEBUG("%d\n", draw->handle);
73 * Free drawable ID and memory to store information about it.
75 int drm_rmdraw(struct drm_device *dev, void *data, struct drm_file *file_priv)
77 struct drm_draw *draw = data;
78 unsigned long irqflags;
80 spin_lock_irqsave(&dev->drw_lock, irqflags);
82 drm_free(drm_get_drawable_info(dev, draw->handle),
83 sizeof(struct drm_drawable_info), DRM_MEM_BUFS);
85 idr_remove(&dev->drw_idr, draw->handle);
87 spin_unlock_irqrestore(&dev->drw_lock, irqflags);
88 DRM_DEBUG("%d\n", draw->handle);
92 int drm_update_drawable_info(struct drm_device *dev, void *data, struct drm_file *file_priv)
94 struct drm_update_draw *update = data;
95 unsigned long irqflags;
96 struct drm_clip_rect *rects;
97 struct drm_drawable_info *info;
100 info = idr_find(&dev->drw_idr, update->handle);
102 info = drm_calloc(1, sizeof(*info), DRM_MEM_BUFS);
105 if (IS_ERR(idr_replace(&dev->drw_idr, info, update->handle))) {
106 DRM_ERROR("No such drawable %d\n", update->handle);
107 drm_free(info, sizeof(*info), DRM_MEM_BUFS);
112 switch (update->type) {
113 case DRM_DRAWABLE_CLIPRECTS:
114 if (update->num == 0)
116 else if (update->num != info->num_rects) {
117 rects = drm_alloc(update->num * sizeof(struct drm_clip_rect),
122 if (update->num && !rects) {
123 DRM_ERROR("Failed to allocate cliprect memory\n");
128 if (update->num && DRM_COPY_FROM_USER(rects,
129 (struct drm_clip_rect __user *)
130 (unsigned long)update->data,
133 DRM_ERROR("Failed to copy cliprects from userspace\n");
138 spin_lock_irqsave(&dev->drw_lock, irqflags);
140 if (rects != info->rects) {
141 drm_free(info->rects, info->num_rects *
142 sizeof(struct drm_clip_rect), DRM_MEM_BUFS);
146 info->num_rects = update->num;
148 spin_unlock_irqrestore(&dev->drw_lock, irqflags);
150 DRM_DEBUG("Updated %d cliprects for drawable %d\n",
151 info->num_rects, update->handle);
154 DRM_ERROR("Invalid update type %d\n", update->type);
161 if (rects != info->rects)
162 drm_free(rects, update->num * sizeof(struct drm_clip_rect),
169 * Caller must hold the drawable spinlock!
171 struct drm_drawable_info *drm_get_drawable_info(struct drm_device *dev, drm_drawable_t id)
173 return idr_find(&dev->drw_idr, id);
175 EXPORT_SYMBOL(drm_get_drawable_info);
177 static int drm_drawable_free(int idr, void *p, void *data)
179 struct drm_drawable_info *info = p;
182 drm_free(info->rects, info->num_rects *
183 sizeof(struct drm_clip_rect), DRM_MEM_BUFS);
184 drm_free(info, sizeof(*info), DRM_MEM_BUFS);
190 void drm_drawable_free_all(struct drm_device *dev)
192 idr_for_each(&dev->drw_idr, drm_drawable_free, NULL);
193 idr_remove_all(&dev->drw_idr);