Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /** |
b5e89ed5 | 2 | * \file drm_drawable.c |
1da177e4 LT |
3 | * IOCTLs for drawables |
4 | * | |
5 | * \author Rickard E. (Rik) Faith <faith@valinux.com> | |
6 | * \author Gareth Hughes <gareth@valinux.com> | |
bea5679f | 7 | * \author Michel Dänzer <michel@tungstengraphics.com> |
1da177e4 LT |
8 | */ |
9 | ||
10 | /* | |
11 | * Created: Tue Feb 2 08:37:54 1999 by faith@valinux.com | |
12 | * | |
13 | * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. | |
14 | * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. | |
b03ed6f2 | 15 | * Copyright 2006 Tungsten Graphics, Inc., Bismarck, North Dakota. |
1da177e4 LT |
16 | * All Rights Reserved. |
17 | * | |
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: | |
24 | * | |
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 | |
27 | * Software. | |
28 | * | |
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. | |
36 | */ | |
37 | ||
38 | #include "drmP.h" | |
39 | ||
b03ed6f2 MCA |
40 | /** |
41 | * Allocate drawable ID and memory to store information about it. | |
42 | */ | |
c153f45f | 43 | int drm_adddraw(struct drm_device *dev, void *data, struct drm_file *file_priv) |
1da177e4 | 44 | { |
bea5679f | 45 | unsigned long irqflags; |
c153f45f | 46 | struct drm_draw *draw = data; |
d4e2cbe9 DA |
47 | int new_id = 0; |
48 | int ret; | |
1da177e4 | 49 | |
d4e2cbe9 DA |
50 | again: |
51 | if (idr_pre_get(&dev->drw_idr, GFP_KERNEL) == 0) { | |
52 | DRM_ERROR("Out of memory expanding drawable idr\n"); | |
53 | return -ENOMEM; | |
bea5679f MCA |
54 | } |
55 | ||
b03ed6f2 | 56 | spin_lock_irqsave(&dev->drw_lock, irqflags); |
d4e2cbe9 DA |
57 | ret = idr_get_new_above(&dev->drw_idr, NULL, 1, &new_id); |
58 | if (ret == -EAGAIN) { | |
59 | spin_unlock_irqrestore(&dev->drw_lock, irqflags); | |
60 | goto again; | |
b03ed6f2 | 61 | } |
bea5679f MCA |
62 | |
63 | spin_unlock_irqrestore(&dev->drw_lock, irqflags); | |
64 | ||
c153f45f | 65 | draw->handle = new_id; |
d4e2cbe9 | 66 | |
c153f45f | 67 | DRM_DEBUG("%d\n", draw->handle); |
bea5679f | 68 | |
1da177e4 LT |
69 | return 0; |
70 | } | |
71 | ||
b03ed6f2 MCA |
72 | /** |
73 | * Free drawable ID and memory to store information about it. | |
74 | */ | |
c153f45f | 75 | int drm_rmdraw(struct drm_device *dev, void *data, struct drm_file *file_priv) |
1da177e4 | 76 | { |
c153f45f | 77 | struct drm_draw *draw = data; |
bea5679f | 78 | unsigned long irqflags; |
786225eb | 79 | struct drm_drawable_info *info; |
bea5679f | 80 | |
b03ed6f2 MCA |
81 | spin_lock_irqsave(&dev->drw_lock, irqflags); |
82 | ||
786225eb | 83 | info = drm_get_drawable_info(dev, draw->handle); |
7e78f725 EA |
84 | if (info == NULL) { |
85 | spin_unlock_irqrestore(&dev->drw_lock, irqflags); | |
86 | return -EINVAL; | |
87 | } | |
9a298b2a EA |
88 | kfree(info->rects); |
89 | kfree(info); | |
b03ed6f2 | 90 | |
c153f45f | 91 | idr_remove(&dev->drw_idr, draw->handle); |
bea5679f | 92 | |
d4e2cbe9 | 93 | spin_unlock_irqrestore(&dev->drw_lock, irqflags); |
c153f45f | 94 | DRM_DEBUG("%d\n", draw->handle); |
bea5679f MCA |
95 | return 0; |
96 | } | |
97 | ||
c153f45f | 98 | int drm_update_drawable_info(struct drm_device *dev, void *data, struct drm_file *file_priv) |
d4e2cbe9 | 99 | { |
c153f45f | 100 | struct drm_update_draw *update = data; |
d4e2cbe9 | 101 | unsigned long irqflags; |
c60ce623 | 102 | struct drm_clip_rect *rects; |
d4e2cbe9 | 103 | struct drm_drawable_info *info; |
b03ed6f2 | 104 | int err; |
bea5679f | 105 | |
c153f45f | 106 | info = idr_find(&dev->drw_idr, update->handle); |
bea5679f | 107 | if (!info) { |
9a298b2a | 108 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
d4e2cbe9 DA |
109 | if (!info) |
110 | return -ENOMEM; | |
c153f45f EA |
111 | if (IS_ERR(idr_replace(&dev->drw_idr, info, update->handle))) { |
112 | DRM_ERROR("No such drawable %d\n", update->handle); | |
9a298b2a | 113 | kfree(info); |
d4e2cbe9 | 114 | return -EINVAL; |
bea5679f | 115 | } |
bea5679f MCA |
116 | } |
117 | ||
c153f45f | 118 | switch (update->type) { |
bea5679f | 119 | case DRM_DRAWABLE_CLIPRECTS: |
86384273 ZW |
120 | if (update->num == 0) |
121 | rects = NULL; | |
122 | else if (update->num != info->num_rects) { | |
9a298b2a EA |
123 | rects = kmalloc(update->num * |
124 | sizeof(struct drm_clip_rect), | |
125 | GFP_KERNEL); | |
b03ed6f2 MCA |
126 | } else |
127 | rects = info->rects; | |
128 | ||
c153f45f | 129 | if (update->num && !rects) { |
b03ed6f2 | 130 | DRM_ERROR("Failed to allocate cliprect memory\n"); |
20caafa6 | 131 | err = -ENOMEM; |
b03ed6f2 | 132 | goto error; |
bea5679f MCA |
133 | } |
134 | ||
c153f45f | 135 | if (update->num && DRM_COPY_FROM_USER(rects, |
c60ce623 | 136 | (struct drm_clip_rect __user *) |
c153f45f EA |
137 | (unsigned long)update->data, |
138 | update->num * | |
b03ed6f2 MCA |
139 | sizeof(*rects))) { |
140 | DRM_ERROR("Failed to copy cliprects from userspace\n"); | |
20caafa6 | 141 | err = -EFAULT; |
b03ed6f2 | 142 | goto error; |
bea5679f MCA |
143 | } |
144 | ||
b03ed6f2 MCA |
145 | spin_lock_irqsave(&dev->drw_lock, irqflags); |
146 | ||
147 | if (rects != info->rects) { | |
9a298b2a | 148 | kfree(info->rects); |
bea5679f MCA |
149 | } |
150 | ||
b03ed6f2 | 151 | info->rects = rects; |
c153f45f | 152 | info->num_rects = update->num; |
b03ed6f2 MCA |
153 | |
154 | spin_unlock_irqrestore(&dev->drw_lock, irqflags); | |
155 | ||
bea5679f | 156 | DRM_DEBUG("Updated %d cliprects for drawable %d\n", |
c153f45f | 157 | info->num_rects, update->handle); |
bea5679f MCA |
158 | break; |
159 | default: | |
c153f45f | 160 | DRM_ERROR("Invalid update type %d\n", update->type); |
20caafa6 | 161 | return -EINVAL; |
bea5679f MCA |
162 | } |
163 | ||
bea5679f | 164 | return 0; |
b03ed6f2 MCA |
165 | |
166 | error: | |
d4e2cbe9 | 167 | if (rects != info->rects) |
9a298b2a | 168 | kfree(rects); |
b03ed6f2 MCA |
169 | |
170 | return err; | |
bea5679f MCA |
171 | } |
172 | ||
173 | /** | |
174 | * Caller must hold the drawable spinlock! | |
175 | */ | |
d4e2cbe9 DA |
176 | struct drm_drawable_info *drm_get_drawable_info(struct drm_device *dev, drm_drawable_t id) |
177 | { | |
178 | return idr_find(&dev->drw_idr, id); | |
179 | } | |
180 | EXPORT_SYMBOL(drm_get_drawable_info); | |
181 | ||
182 | static int drm_drawable_free(int idr, void *p, void *data) | |
183 | { | |
184 | struct drm_drawable_info *info = p; | |
185 | ||
186 | if (info) { | |
9a298b2a EA |
187 | kfree(info->rects); |
188 | kfree(info); | |
bea5679f MCA |
189 | } |
190 | ||
d4e2cbe9 DA |
191 | return 0; |
192 | } | |
193 | ||
194 | void drm_drawable_free_all(struct drm_device *dev) | |
195 | { | |
196 | idr_for_each(&dev->drw_idr, drm_drawable_free, NULL); | |
197 | idr_remove_all(&dev->drw_idr); | |
1da177e4 | 198 | } |