Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /** |
b5e89ed5 | 2 | * \file drm_drv.c |
1da177e4 LT |
3 | * Generic driver template |
4 | * | |
5 | * \author Rickard E. (Rik) Faith <faith@valinux.com> | |
6 | * \author Gareth Hughes <gareth@valinux.com> | |
7 | * | |
8 | * To use this template, you must at least define the following (samples | |
9 | * given for the MGA driver): | |
10 | * | |
11 | * \code | |
12 | * #define DRIVER_AUTHOR "VA Linux Systems, Inc." | |
13 | * | |
14 | * #define DRIVER_NAME "mga" | |
15 | * #define DRIVER_DESC "Matrox G200/G400" | |
16 | * #define DRIVER_DATE "20001127" | |
17 | * | |
1da177e4 LT |
18 | * #define drm_x mga_##x |
19 | * \endcode | |
20 | */ | |
21 | ||
22 | /* | |
23 | * Created: Thu Nov 23 03:10:50 2000 by gareth@valinux.com | |
24 | * | |
25 | * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas. | |
26 | * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. | |
27 | * All Rights Reserved. | |
28 | * | |
29 | * Permission is hereby granted, free of charge, to any person obtaining a | |
30 | * copy of this software and associated documentation files (the "Software"), | |
31 | * to deal in the Software without restriction, including without limitation | |
32 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
33 | * and/or sell copies of the Software, and to permit persons to whom the | |
34 | * Software is furnished to do so, subject to the following conditions: | |
35 | * | |
36 | * The above copyright notice and this permission notice (including the next | |
37 | * paragraph) shall be included in all copies or substantial portions of the | |
38 | * Software. | |
39 | * | |
40 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
41 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
42 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
43 | * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
44 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
45 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
46 | * OTHER DEALINGS IN THE SOFTWARE. | |
47 | */ | |
48 | ||
955b12de | 49 | #include <linux/debugfs.h> |
5a0e3ad6 | 50 | #include <linux/slab.h> |
1da177e4 LT |
51 | #include "drmP.h" |
52 | #include "drm_core.h" | |
53 | ||
955b12de | 54 | |
c153f45f EA |
55 | static int drm_version(struct drm_device *dev, void *data, |
56 | struct drm_file *file_priv); | |
c94f7029 | 57 | |
1b2f1489 DA |
58 | #define DRM_IOCTL_DEF(ioctl, _func, _flags) \ |
59 | [DRM_IOCTL_NR(ioctl)] = {.cmd = ioctl, .func = _func, .flags = _flags, .cmd_drv = 0} | |
60 | ||
1da177e4 | 61 | /** Ioctl table */ |
c153f45f EA |
62 | static struct drm_ioctl_desc drm_ioctls[] = { |
63 | DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0), | |
64 | DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0), | |
65 | DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0), | |
66 | DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY), | |
67 | DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0), | |
68 | DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0), | |
69 | DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0), | |
453a7d46 | 70 | DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER), |
c153f45f EA |
71 | |
72 | DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
73 | DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
74 | DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
453a7d46 | 75 | DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER), |
c153f45f EA |
76 | |
77 | DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
78 | DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH), | |
79 | ||
80 | DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
81 | DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH), | |
82 | ||
7c1c2871 DA |
83 | DRM_IOCTL_DEF(DRM_IOCTL_SET_MASTER, drm_setmaster_ioctl, DRM_ROOT_ONLY), |
84 | DRM_IOCTL_DEF(DRM_IOCTL_DROP_MASTER, drm_dropmaster_ioctl, DRM_ROOT_ONLY), | |
85 | ||
c153f45f EA |
86 | DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY), |
87 | DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
88 | DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
89 | DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH), | |
90 | DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
91 | DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
92 | DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH), | |
93 | ||
8f879194 DV |
94 | DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
95 | DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
c153f45f EA |
96 | |
97 | DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH), | |
98 | DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH), | |
99 | ||
100 | DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH), | |
101 | ||
102 | DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
103 | DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
104 | DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH), | |
105 | DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH), | |
106 | DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH), | |
1da177e4 | 107 | /* The DRM_IOCTL_DMA ioctl should be defined by the driver. */ |
c153f45f | 108 | DRM_IOCTL_DEF(DRM_IOCTL_DMA, NULL, DRM_AUTH), |
1da177e4 | 109 | |
c153f45f | 110 | DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
1da177e4 LT |
111 | |
112 | #if __OS_HAS_AGP | |
c153f45f EA |
113 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
114 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
115 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
116 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH), | |
117 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
118 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
119 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
120 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
1da177e4 LT |
121 | #endif |
122 | ||
c153f45f EA |
123 | DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
124 | DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
1da177e4 | 125 | |
c153f45f | 126 | DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, 0), |
bea5679f | 127 | |
0a3e67a4 JB |
128 | DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0), |
129 | ||
8f879194 | 130 | DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
673a394b | 131 | |
9a1420d1 DA |
132 | DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, DRM_UNLOCKED), |
133 | DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK, drm_gem_flink_ioctl, DRM_AUTH|DRM_UNLOCKED), | |
134 | DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH|DRM_UNLOCKED), | |
135 | ||
136 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETRESOURCES, drm_mode_getresources, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), | |
137 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCRTC, drm_mode_getcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), | |
138 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETCRTC, drm_mode_setcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), | |
139 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR, drm_mode_cursor_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), | |
140 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETGAMMA, drm_mode_gamma_get_ioctl, DRM_MASTER|DRM_UNLOCKED), | |
141 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETGAMMA, drm_mode_gamma_set_ioctl, DRM_MASTER|DRM_UNLOCKED), | |
142 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETENCODER, drm_mode_getencoder, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), | |
143 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCONNECTOR, drm_mode_getconnector, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), | |
144 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATTACHMODE, drm_mode_attachmode_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), | |
145 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_DETACHMODE, drm_mode_detachmode_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), | |
146 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPERTY, drm_mode_getproperty_ioctl, DRM_MASTER | DRM_CONTROL_ALLOW|DRM_UNLOCKED), | |
147 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPROPERTY, drm_mode_connector_property_set_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), | |
148 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPBLOB, drm_mode_getblob_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), | |
149 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETFB, drm_mode_getfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), | |
150 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB, drm_mode_addfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), | |
151 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_RMFB, drm_mode_rmfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), | |
152 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_PAGE_FLIP, drm_mode_page_flip_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), | |
ff72145b DA |
153 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_DIRTYFB, drm_mode_dirtyfb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), |
154 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_CREATE_DUMB, drm_mode_create_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), | |
155 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_MAP_DUMB, drm_mode_mmap_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), | |
156 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_DESTROY_DUMB, drm_mode_destroy_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED) | |
1da177e4 LT |
157 | }; |
158 | ||
0515b93c | 159 | #define DRM_CORE_IOCTL_COUNT ARRAY_SIZE( drm_ioctls ) |
1da177e4 LT |
160 | |
161 | /** | |
162 | * Take down the DRM device. | |
163 | * | |
164 | * \param dev DRM device structure. | |
165 | * | |
166 | * Frees every resource in \p dev. | |
167 | * | |
aff138ab | 168 | * \sa drm_device |
1da177e4 | 169 | */ |
84b1fd10 | 170 | int drm_lastclose(struct drm_device * dev) |
1da177e4 | 171 | { |
8fc2fdf4 | 172 | struct drm_vma_entry *vma, *vma_temp; |
1da177e4 LT |
173 | int i; |
174 | ||
b5e89ed5 | 175 | DRM_DEBUG("\n"); |
1da177e4 | 176 | |
22eae947 DA |
177 | if (dev->driver->lastclose) |
178 | dev->driver->lastclose(dev); | |
179 | DRM_DEBUG("driver lastclose completed\n"); | |
1da177e4 | 180 | |
f453ba04 | 181 | if (dev->irq_enabled && !drm_core_check_feature(dev, DRIVER_MODESET)) |
b5e89ed5 | 182 | drm_irq_uninstall(dev); |
1da177e4 | 183 | |
30e2fb18 | 184 | mutex_lock(&dev->struct_mutex); |
d4e2cbe9 | 185 | |
b5e89ed5 | 186 | /* Clear AGP information */ |
f453ba04 | 187 | if (drm_core_has_AGP(dev) && dev->agp && |
955b12de | 188 | !drm_core_check_feature(dev, DRIVER_MODESET)) { |
55910517 | 189 | struct drm_agp_mem *entry, *tempe; |
1da177e4 | 190 | |
b5e89ed5 DA |
191 | /* Remove AGP resources, but leave dev->agp |
192 | intact until drv_cleanup is called. */ | |
bd1b331f | 193 | list_for_each_entry_safe(entry, tempe, &dev->agp->memory, head) { |
b5e89ed5 DA |
194 | if (entry->bound) |
195 | drm_unbind_agp(entry->memory); | |
196 | drm_free_agp(entry->memory, entry->pages); | |
9a298b2a | 197 | kfree(entry); |
1da177e4 | 198 | } |
bd1b331f | 199 | INIT_LIST_HEAD(&dev->agp->memory); |
1da177e4 | 200 | |
7ab98401 | 201 | if (dev->agp->acquired) |
b5e89ed5 | 202 | drm_agp_release(dev); |
1da177e4 LT |
203 | |
204 | dev->agp->acquired = 0; | |
b5e89ed5 | 205 | dev->agp->enabled = 0; |
1da177e4 | 206 | } |
f453ba04 DA |
207 | if (drm_core_check_feature(dev, DRIVER_SG) && dev->sg && |
208 | !drm_core_check_feature(dev, DRIVER_MODESET)) { | |
836cf046 DA |
209 | drm_sg_cleanup(dev->sg); |
210 | dev->sg = NULL; | |
211 | } | |
1da177e4 | 212 | |
b5e89ed5 | 213 | /* Clear vma list (only built for debugging) */ |
bd1b331f DA |
214 | list_for_each_entry_safe(vma, vma_temp, &dev->vmalist, head) { |
215 | list_del(&vma->head); | |
9a298b2a | 216 | kfree(vma); |
1da177e4 LT |
217 | } |
218 | ||
b5e89ed5 DA |
219 | if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE) && dev->queuelist) { |
220 | for (i = 0; i < dev->queue_count; i++) { | |
9a298b2a EA |
221 | kfree(dev->queuelist[i]); |
222 | dev->queuelist[i] = NULL; | |
1da177e4 | 223 | } |
9a298b2a | 224 | kfree(dev->queuelist); |
1da177e4 LT |
225 | dev->queuelist = NULL; |
226 | } | |
227 | dev->queue_count = 0; | |
228 | ||
f453ba04 DA |
229 | if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) && |
230 | !drm_core_check_feature(dev, DRIVER_MODESET)) | |
b5e89ed5 | 231 | drm_dma_takedown(dev); |
1da177e4 | 232 | |
a2c0a97b | 233 | dev->dev_mapping = NULL; |
30e2fb18 | 234 | mutex_unlock(&dev->struct_mutex); |
1da177e4 | 235 | |
22eae947 | 236 | DRM_DEBUG("lastclose completed\n"); |
1da177e4 LT |
237 | return 0; |
238 | } | |
239 | ||
1da177e4 | 240 | /** File operations structure */ |
2b8693c0 | 241 | static const struct file_operations drm_stub_fops = { |
1da177e4 | 242 | .owner = THIS_MODULE, |
6038f373 AB |
243 | .open = drm_stub_open, |
244 | .llseek = noop_llseek, | |
1da177e4 LT |
245 | }; |
246 | ||
247 | static int __init drm_core_init(void) | |
248 | { | |
249 | int ret = -ENOMEM; | |
b5e89ed5 | 250 | |
ba4420c2 | 251 | drm_global_init(); |
2c14f28b | 252 | idr_init(&drm_minors_idr); |
b5e89ed5 | 253 | |
1da177e4 LT |
254 | if (register_chrdev(DRM_MAJOR, "drm", &drm_stub_fops)) |
255 | goto err_p1; | |
b5e89ed5 | 256 | |
1da177e4 LT |
257 | drm_class = drm_sysfs_create(THIS_MODULE, "drm"); |
258 | if (IS_ERR(drm_class)) { | |
b5e89ed5 | 259 | printk(KERN_ERR "DRM: Error creating drm class.\n"); |
1da177e4 LT |
260 | ret = PTR_ERR(drm_class); |
261 | goto err_p2; | |
262 | } | |
263 | ||
66600221 | 264 | drm_proc_root = proc_mkdir("dri", NULL); |
1da177e4 LT |
265 | if (!drm_proc_root) { |
266 | DRM_ERROR("Cannot create /proc/dri\n"); | |
267 | ret = -1; | |
268 | goto err_p3; | |
269 | } | |
b5e89ed5 | 270 | |
955b12de BG |
271 | drm_debugfs_root = debugfs_create_dir("dri", NULL); |
272 | if (!drm_debugfs_root) { | |
156f5a78 | 273 | DRM_ERROR("Cannot create /sys/kernel/debug/dri\n"); |
955b12de BG |
274 | ret = -1; |
275 | goto err_p3; | |
276 | } | |
277 | ||
b5e89ed5 DA |
278 | DRM_INFO("Initialized %s %d.%d.%d %s\n", |
279 | CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE); | |
1da177e4 | 280 | return 0; |
e8b962b6 JB |
281 | err_p3: |
282 | drm_sysfs_destroy(); | |
283 | err_p2: | |
1da177e4 | 284 | unregister_chrdev(DRM_MAJOR, "drm"); |
2c14f28b DA |
285 | |
286 | idr_destroy(&drm_minors_idr); | |
e8b962b6 | 287 | err_p1: |
1da177e4 LT |
288 | return ret; |
289 | } | |
290 | ||
b5e89ed5 | 291 | static void __exit drm_core_exit(void) |
1da177e4 LT |
292 | { |
293 | remove_proc_entry("dri", NULL); | |
955b12de | 294 | debugfs_remove(drm_debugfs_root); |
e8b962b6 | 295 | drm_sysfs_destroy(); |
1da177e4 LT |
296 | |
297 | unregister_chrdev(DRM_MAJOR, "drm"); | |
298 | ||
ddd3d069 | 299 | idr_remove_all(&drm_minors_idr); |
2c14f28b | 300 | idr_destroy(&drm_minors_idr); |
1da177e4 LT |
301 | } |
302 | ||
b5e89ed5 DA |
303 | module_init(drm_core_init); |
304 | module_exit(drm_core_exit); | |
1da177e4 | 305 | |
156822f7 AS |
306 | /** |
307 | * Copy and IOCTL return string to user space | |
308 | */ | |
140a45fc AS |
309 | static int drm_copy_field(char *buf, size_t *buf_len, const char *value) |
310 | { | |
311 | int len; | |
312 | ||
313 | /* don't overflow userbuf */ | |
314 | len = strlen(value); | |
315 | if (len > *buf_len) | |
316 | len = *buf_len; | |
317 | ||
318 | /* let userspace know exact length of driver value (which could be | |
319 | * larger than the userspace-supplied buffer) */ | |
320 | *buf_len = strlen(value); | |
321 | ||
322 | /* finally, try filling in the userbuf */ | |
323 | if (len && buf) | |
324 | if (copy_to_user(buf, value, len)) | |
325 | return -EFAULT; | |
326 | return 0; | |
327 | } | |
156822f7 | 328 | |
1da177e4 LT |
329 | /** |
330 | * Get version information | |
331 | * | |
332 | * \param inode device inode. | |
333 | * \param filp file pointer. | |
334 | * \param cmd command. | |
335 | * \param arg user argument, pointing to a drm_version structure. | |
336 | * \return zero on success or negative number on failure. | |
337 | * | |
338 | * Fills in the version information in \p arg. | |
339 | */ | |
c153f45f EA |
340 | static int drm_version(struct drm_device *dev, void *data, |
341 | struct drm_file *file_priv) | |
1da177e4 | 342 | { |
c153f45f | 343 | struct drm_version *version = data; |
dad07ca7 | 344 | int err; |
1da177e4 | 345 | |
c153f45f EA |
346 | version->version_major = dev->driver->major; |
347 | version->version_minor = dev->driver->minor; | |
348 | version->version_patchlevel = dev->driver->patchlevel; | |
dad07ca7 AS |
349 | err = drm_copy_field(version->name, &version->name_len, |
350 | dev->driver->name); | |
351 | if (!err) | |
352 | err = drm_copy_field(version->date, &version->date_len, | |
353 | dev->driver->date); | |
354 | if (!err) | |
355 | err = drm_copy_field(version->desc, &version->desc_len, | |
356 | dev->driver->desc); | |
357 | ||
358 | return err; | |
1da177e4 LT |
359 | } |
360 | ||
b5e89ed5 | 361 | /** |
1da177e4 LT |
362 | * Called whenever a process performs an ioctl on /dev/drm. |
363 | * | |
364 | * \param inode device inode. | |
6c340eac | 365 | * \param file_priv DRM file private. |
1da177e4 LT |
366 | * \param cmd command. |
367 | * \param arg user argument. | |
368 | * \return zero on success or negative number on failure. | |
369 | * | |
370 | * Looks up the ioctl function in the ::ioctls table, checking for root | |
371 | * previleges if so required, and dispatches to the respective function. | |
372 | */ | |
ed8b6704 | 373 | long drm_ioctl(struct file *filp, |
b5e89ed5 | 374 | unsigned int cmd, unsigned long arg) |
1da177e4 | 375 | { |
6c340eac | 376 | struct drm_file *file_priv = filp->private_data; |
ed8b6704 | 377 | struct drm_device *dev; |
c153f45f | 378 | struct drm_ioctl_desc *ioctl; |
1da177e4 LT |
379 | drm_ioctl_t *func; |
380 | unsigned int nr = DRM_IOCTL_NR(cmd); | |
381 | int retcode = -EINVAL; | |
955a23eb | 382 | char stack_kdata[128]; |
c153f45f | 383 | char *kdata = NULL; |
1b2f1489 | 384 | unsigned int usize, asize; |
1da177e4 | 385 | |
ed8b6704 | 386 | dev = file_priv->minor->dev; |
b5e89ed5 DA |
387 | atomic_inc(&dev->ioctl_count); |
388 | atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); | |
6c340eac | 389 | ++file_priv->ioctl_count; |
1da177e4 | 390 | |
b5e89ed5 | 391 | DRM_DEBUG("pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%lx, auth=%d\n", |
ba25f9dc | 392 | task_pid_nr(current), cmd, nr, |
2c14f28b | 393 | (long)old_encode_dev(file_priv->minor->device), |
6c340eac | 394 | file_priv->authenticated); |
b5e89ed5 | 395 | |
0515b93c | 396 | if ((nr >= DRM_CORE_IOCTL_COUNT) && |
99da6d86 TH |
397 | ((nr < DRM_COMMAND_BASE) || (nr >= DRM_COMMAND_END))) |
398 | goto err_i1; | |
0515b93c | 399 | if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END) && |
1b2f1489 DA |
400 | (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) { |
401 | u32 drv_size; | |
1da177e4 | 402 | ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE]; |
1b2f1489 DA |
403 | drv_size = _IOC_SIZE(ioctl->cmd_drv); |
404 | usize = asize = _IOC_SIZE(cmd); | |
405 | if (drv_size > asize) | |
406 | asize = drv_size; | |
407 | } | |
858a3685 | 408 | else if ((nr >= DRM_COMMAND_END) || (nr < DRM_COMMAND_BASE)) { |
99da6d86 | 409 | ioctl = &drm_ioctls[nr]; |
858a3685 | 410 | cmd = ioctl->cmd; |
1b2f1489 | 411 | usize = asize = _IOC_SIZE(cmd); |
858a3685 | 412 | } else |
1da177e4 | 413 | goto err_i1; |
b5e89ed5 | 414 | |
41ee2ff4 | 415 | /* Do not trust userspace, use our own definition */ |
1da177e4 LT |
416 | func = ioctl->func; |
417 | /* is there a local override? */ | |
418 | if ((nr == DRM_IOCTL_NR(DRM_IOCTL_DMA)) && dev->driver->dma_ioctl) | |
419 | func = dev->driver->dma_ioctl; | |
b5e89ed5 DA |
420 | |
421 | if (!func) { | |
422 | DRM_DEBUG("no function\n"); | |
1da177e4 | 423 | retcode = -EINVAL; |
a7a2cc31 | 424 | } else if (((ioctl->flags & DRM_ROOT_ONLY) && !capable(CAP_SYS_ADMIN)) || |
6c340eac | 425 | ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) || |
59738d5c JB |
426 | ((ioctl->flags & DRM_MASTER) && !file_priv->is_master) || |
427 | (!(ioctl->flags & DRM_CONTROL_ALLOW) && (file_priv->minor->type == DRM_MINOR_CONTROL))) { | |
1da177e4 LT |
428 | retcode = -EACCES; |
429 | } else { | |
c153f45f | 430 | if (cmd & (IOC_IN | IOC_OUT)) { |
1b2f1489 | 431 | if (asize <= sizeof(stack_kdata)) { |
955a23eb EA |
432 | kdata = stack_kdata; |
433 | } else { | |
1b2f1489 | 434 | kdata = kmalloc(asize, GFP_KERNEL); |
955a23eb EA |
435 | if (!kdata) { |
436 | retcode = -ENOMEM; | |
437 | goto err_i1; | |
438 | } | |
9d5b3ffc | 439 | } |
c153f45f EA |
440 | } |
441 | ||
442 | if (cmd & IOC_IN) { | |
443 | if (copy_from_user(kdata, (void __user *)arg, | |
1b2f1489 | 444 | usize) != 0) { |
9d5b3ffc | 445 | retcode = -EFAULT; |
c153f45f EA |
446 | goto err_i1; |
447 | } | |
b9f0aee8 | 448 | } else |
1b2f1489 | 449 | memset(kdata, 0, usize); |
b9f0aee8 | 450 | |
ed8b6704 AB |
451 | if (ioctl->flags & DRM_UNLOCKED) |
452 | retcode = func(dev, kdata, file_priv); | |
453 | else { | |
58374713 | 454 | mutex_lock(&drm_global_mutex); |
ed8b6704 | 455 | retcode = func(dev, kdata, file_priv); |
58374713 | 456 | mutex_unlock(&drm_global_mutex); |
ed8b6704 | 457 | } |
c153f45f | 458 | |
9b6fe313 | 459 | if (cmd & IOC_OUT) { |
c153f45f | 460 | if (copy_to_user((void __user *)arg, kdata, |
1b2f1489 | 461 | usize) != 0) |
9d5b3ffc | 462 | retcode = -EFAULT; |
c153f45f | 463 | } |
1da177e4 | 464 | } |
b5e89ed5 DA |
465 | |
466 | err_i1: | |
955a23eb | 467 | if (kdata != stack_kdata) |
c153f45f | 468 | kfree(kdata); |
b5e89ed5 DA |
469 | atomic_dec(&dev->ioctl_count); |
470 | if (retcode) | |
471 | DRM_DEBUG("ret = %x\n", retcode); | |
1da177e4 LT |
472 | return retcode; |
473 | } | |
1da177e4 | 474 | |
b5e89ed5 | 475 | EXPORT_SYMBOL(drm_ioctl); |
da509d7a | 476 | |
f77d390c | 477 | struct drm_local_map *drm_getsarea(struct drm_device *dev) |
da509d7a | 478 | { |
55910517 | 479 | struct drm_map_list *entry; |
da509d7a | 480 | |
6f710105 | 481 | list_for_each_entry(entry, &dev->maplist, head) { |
da509d7a DA |
482 | if (entry->map && entry->map->type == _DRM_SHM && |
483 | (entry->map->flags & _DRM_CONTAINS_LOCK)) { | |
484 | return entry->map; | |
485 | } | |
486 | } | |
487 | return NULL; | |
488 | } | |
489 | EXPORT_SYMBOL(drm_getsarea); |