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 | */ | |
bea5679f | 43 | int drm_adddraw(DRM_IOCTL_ARGS) |
1da177e4 | 44 | { |
bea5679f MCA |
45 | DRM_DEVICE; |
46 | unsigned long irqflags; | |
c60ce623 | 47 | struct drm_draw draw; |
d4e2cbe9 DA |
48 | int new_id = 0; |
49 | int ret; | |
1da177e4 | 50 | |
d4e2cbe9 DA |
51 | again: |
52 | if (idr_pre_get(&dev->drw_idr, GFP_KERNEL) == 0) { | |
53 | DRM_ERROR("Out of memory expanding drawable idr\n"); | |
54 | return -ENOMEM; | |
bea5679f MCA |
55 | } |
56 | ||
b03ed6f2 | 57 | spin_lock_irqsave(&dev->drw_lock, irqflags); |
d4e2cbe9 DA |
58 | ret = idr_get_new_above(&dev->drw_idr, NULL, 1, &new_id); |
59 | if (ret == -EAGAIN) { | |
60 | spin_unlock_irqrestore(&dev->drw_lock, irqflags); | |
61 | goto again; | |
b03ed6f2 | 62 | } |
bea5679f MCA |
63 | |
64 | spin_unlock_irqrestore(&dev->drw_lock, irqflags); | |
65 | ||
d4e2cbe9 DA |
66 | draw.handle = new_id; |
67 | ||
68 | DRM_DEBUG("%d\n", draw.handle); | |
69 | ||
c60ce623 | 70 | DRM_COPY_TO_USER_IOCTL((struct drm_draw __user *)data, draw, sizeof(draw)); |
bea5679f | 71 | |
1da177e4 LT |
72 | return 0; |
73 | } | |
74 | ||
b03ed6f2 MCA |
75 | /** |
76 | * Free drawable ID and memory to store information about it. | |
77 | */ | |
bea5679f | 78 | int drm_rmdraw(DRM_IOCTL_ARGS) |
1da177e4 | 79 | { |
bea5679f | 80 | DRM_DEVICE; |
c60ce623 | 81 | struct drm_draw draw; |
bea5679f MCA |
82 | unsigned long irqflags; |
83 | ||
c60ce623 | 84 | DRM_COPY_FROM_USER_IOCTL(draw, (struct drm_draw __user *) data, |
bea5679f MCA |
85 | sizeof(draw)); |
86 | ||
b03ed6f2 MCA |
87 | spin_lock_irqsave(&dev->drw_lock, irqflags); |
88 | ||
d4e2cbe9 DA |
89 | drm_free(drm_get_drawable_info(dev, draw.handle), |
90 | sizeof(struct drm_drawable_info), DRM_MEM_BUFS); | |
b03ed6f2 | 91 | |
d4e2cbe9 | 92 | idr_remove(&dev->drw_idr, draw.handle); |
bea5679f | 93 | |
d4e2cbe9 | 94 | spin_unlock_irqrestore(&dev->drw_lock, irqflags); |
bea5679f MCA |
95 | DRM_DEBUG("%d\n", draw.handle); |
96 | return 0; | |
97 | } | |
98 | ||
d4e2cbe9 DA |
99 | int drm_update_drawable_info(DRM_IOCTL_ARGS) |
100 | { | |
bea5679f | 101 | DRM_DEVICE; |
c60ce623 | 102 | struct drm_update_draw update; |
d4e2cbe9 | 103 | unsigned long irqflags; |
c60ce623 | 104 | struct drm_clip_rect *rects; |
d4e2cbe9 | 105 | struct drm_drawable_info *info; |
b03ed6f2 | 106 | int err; |
bea5679f | 107 | |
c60ce623 | 108 | DRM_COPY_FROM_USER_IOCTL(update, (struct drm_update_draw __user *) data, |
bea5679f MCA |
109 | sizeof(update)); |
110 | ||
d4e2cbe9 | 111 | info = idr_find(&dev->drw_idr, update.handle); |
bea5679f | 112 | if (!info) { |
d4e2cbe9 DA |
113 | info = drm_calloc(1, sizeof(*info), DRM_MEM_BUFS); |
114 | if (!info) | |
115 | return -ENOMEM; | |
116 | if (IS_ERR(idr_replace(&dev->drw_idr, info, update.handle))) { | |
117 | DRM_ERROR("No such drawable %d\n", update.handle); | |
118 | drm_free(info, sizeof(*info), DRM_MEM_BUFS); | |
119 | return -EINVAL; | |
bea5679f | 120 | } |
bea5679f MCA |
121 | } |
122 | ||
123 | switch (update.type) { | |
124 | case DRM_DRAWABLE_CLIPRECTS: | |
125 | if (update.num != info->num_rects) { | |
c60ce623 | 126 | rects = drm_alloc(update.num * sizeof(struct drm_clip_rect), |
b03ed6f2 MCA |
127 | DRM_MEM_BUFS); |
128 | } else | |
129 | rects = info->rects; | |
130 | ||
131 | if (update.num && !rects) { | |
132 | DRM_ERROR("Failed to allocate cliprect memory\n"); | |
20caafa6 | 133 | err = -ENOMEM; |
b03ed6f2 | 134 | goto error; |
bea5679f MCA |
135 | } |
136 | ||
b03ed6f2 | 137 | if (update.num && DRM_COPY_FROM_USER(rects, |
c60ce623 | 138 | (struct drm_clip_rect __user *) |
b03ed6f2 MCA |
139 | (unsigned long)update.data, |
140 | update.num * | |
141 | sizeof(*rects))) { | |
142 | DRM_ERROR("Failed to copy cliprects from userspace\n"); | |
20caafa6 | 143 | err = -EFAULT; |
b03ed6f2 | 144 | goto error; |
bea5679f MCA |
145 | } |
146 | ||
b03ed6f2 MCA |
147 | spin_lock_irqsave(&dev->drw_lock, irqflags); |
148 | ||
149 | if (rects != info->rects) { | |
bea5679f | 150 | drm_free(info->rects, info->num_rects * |
c60ce623 | 151 | sizeof(struct drm_clip_rect), DRM_MEM_BUFS); |
bea5679f MCA |
152 | } |
153 | ||
b03ed6f2 MCA |
154 | info->rects = rects; |
155 | info->num_rects = update.num; | |
b03ed6f2 MCA |
156 | |
157 | spin_unlock_irqrestore(&dev->drw_lock, irqflags); | |
158 | ||
bea5679f | 159 | DRM_DEBUG("Updated %d cliprects for drawable %d\n", |
d4e2cbe9 | 160 | info->num_rects, update.handle); |
bea5679f MCA |
161 | break; |
162 | default: | |
163 | DRM_ERROR("Invalid update type %d\n", update.type); | |
20caafa6 | 164 | return -EINVAL; |
bea5679f MCA |
165 | } |
166 | ||
bea5679f | 167 | return 0; |
b03ed6f2 MCA |
168 | |
169 | error: | |
d4e2cbe9 DA |
170 | if (rects != info->rects) |
171 | drm_free(rects, update.num * sizeof(struct drm_clip_rect), | |
172 | DRM_MEM_BUFS); | |
b03ed6f2 MCA |
173 | |
174 | return err; | |
bea5679f MCA |
175 | } |
176 | ||
177 | /** | |
178 | * Caller must hold the drawable spinlock! | |
179 | */ | |
d4e2cbe9 DA |
180 | struct drm_drawable_info *drm_get_drawable_info(struct drm_device *dev, drm_drawable_t id) |
181 | { | |
182 | return idr_find(&dev->drw_idr, id); | |
183 | } | |
184 | EXPORT_SYMBOL(drm_get_drawable_info); | |
185 | ||
186 | static int drm_drawable_free(int idr, void *p, void *data) | |
187 | { | |
188 | struct drm_drawable_info *info = p; | |
189 | ||
190 | if (info) { | |
191 | drm_free(info->rects, info->num_rects * | |
192 | sizeof(struct drm_clip_rect), DRM_MEM_BUFS); | |
193 | drm_free(info, sizeof(*info), DRM_MEM_BUFS); | |
bea5679f MCA |
194 | } |
195 | ||
d4e2cbe9 DA |
196 | return 0; |
197 | } | |
198 | ||
199 | void drm_drawable_free_all(struct drm_device *dev) | |
200 | { | |
201 | idr_for_each(&dev->drw_idr, drm_drawable_free, NULL); | |
202 | idr_remove_all(&dev->drw_idr); | |
1da177e4 | 203 | } |