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Commit | Line | Data |
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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> |
1da177e4 LT |
50 | #include "drmP.h" |
51 | #include "drm_core.h" | |
52 | ||
955b12de | 53 | |
c153f45f EA |
54 | static int drm_version(struct drm_device *dev, void *data, |
55 | struct drm_file *file_priv); | |
c94f7029 | 56 | |
1da177e4 | 57 | /** Ioctl table */ |
c153f45f EA |
58 | static struct drm_ioctl_desc drm_ioctls[] = { |
59 | DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0), | |
60 | DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0), | |
61 | DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0), | |
62 | DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY), | |
63 | DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0), | |
64 | DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0), | |
65 | DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0), | |
453a7d46 | 66 | DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER), |
c153f45f EA |
67 | |
68 | DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
69 | DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
70 | DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
453a7d46 | 71 | DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER), |
c153f45f EA |
72 | |
73 | DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
74 | DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH), | |
75 | ||
76 | DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
77 | DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH), | |
78 | ||
7c1c2871 DA |
79 | DRM_IOCTL_DEF(DRM_IOCTL_SET_MASTER, drm_setmaster_ioctl, DRM_ROOT_ONLY), |
80 | DRM_IOCTL_DEF(DRM_IOCTL_DROP_MASTER, drm_dropmaster_ioctl, DRM_ROOT_ONLY), | |
81 | ||
c153f45f EA |
82 | DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY), |
83 | DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
84 | DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
85 | DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH), | |
86 | DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
87 | DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
88 | DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH), | |
89 | ||
90 | DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
91 | DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
92 | ||
93 | DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH), | |
94 | DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH), | |
95 | ||
96 | DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH), | |
97 | ||
98 | DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
99 | DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
100 | DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH), | |
101 | DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH), | |
102 | DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH), | |
1da177e4 | 103 | /* The DRM_IOCTL_DMA ioctl should be defined by the driver. */ |
c153f45f | 104 | DRM_IOCTL_DEF(DRM_IOCTL_DMA, NULL, DRM_AUTH), |
1da177e4 | 105 | |
c153f45f | 106 | DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
1da177e4 LT |
107 | |
108 | #if __OS_HAS_AGP | |
c153f45f EA |
109 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
110 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
111 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
112 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH), | |
113 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
114 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
115 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
116 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
1da177e4 LT |
117 | #endif |
118 | ||
c153f45f EA |
119 | DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
120 | DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
1da177e4 | 121 | |
c153f45f | 122 | DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, 0), |
bea5679f | 123 | |
0a3e67a4 JB |
124 | DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0), |
125 | ||
c153f45f | 126 | DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_update_drawable_info, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
673a394b EA |
127 | |
128 | DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, 0), | |
129 | DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK, drm_gem_flink_ioctl, DRM_AUTH), | |
130 | DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH), | |
f453ba04 DA |
131 | |
132 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETRESOURCES, drm_mode_getresources, DRM_MASTER|DRM_CONTROL_ALLOW), | |
133 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCRTC, drm_mode_getcrtc, DRM_MASTER|DRM_CONTROL_ALLOW), | |
f453ba04 DA |
134 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETCRTC, drm_mode_setcrtc, DRM_MASTER|DRM_CONTROL_ALLOW), |
135 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR, drm_mode_cursor_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW), | |
e0c8463a JB |
136 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETGAMMA, drm_mode_gamma_get_ioctl, DRM_MASTER), |
137 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETGAMMA, drm_mode_gamma_set_ioctl, DRM_MASTER), | |
138 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETENCODER, drm_mode_getencoder, DRM_MASTER|DRM_CONTROL_ALLOW), | |
139 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCONNECTOR, drm_mode_getconnector, DRM_MASTER|DRM_CONTROL_ALLOW), | |
f453ba04 DA |
140 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATTACHMODE, drm_mode_attachmode_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW), |
141 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_DETACHMODE, drm_mode_detachmode_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW), | |
142 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPERTY, drm_mode_getproperty_ioctl, DRM_MASTER | DRM_CONTROL_ALLOW), | |
e0c8463a JB |
143 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPROPERTY, drm_mode_connector_property_set_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW), |
144 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPBLOB, drm_mode_getblob_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW), | |
145 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETFB, drm_mode_getfb, DRM_MASTER|DRM_CONTROL_ALLOW), | |
146 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB, drm_mode_addfb, DRM_MASTER|DRM_CONTROL_ALLOW), | |
147 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_RMFB, drm_mode_rmfb, DRM_MASTER|DRM_CONTROL_ALLOW), | |
1da177e4 LT |
148 | }; |
149 | ||
0515b93c | 150 | #define DRM_CORE_IOCTL_COUNT ARRAY_SIZE( drm_ioctls ) |
1da177e4 LT |
151 | |
152 | /** | |
153 | * Take down the DRM device. | |
154 | * | |
155 | * \param dev DRM device structure. | |
156 | * | |
157 | * Frees every resource in \p dev. | |
158 | * | |
aff138ab | 159 | * \sa drm_device |
1da177e4 | 160 | */ |
84b1fd10 | 161 | int drm_lastclose(struct drm_device * dev) |
1da177e4 | 162 | { |
8fc2fdf4 | 163 | struct drm_vma_entry *vma, *vma_temp; |
1da177e4 LT |
164 | int i; |
165 | ||
b5e89ed5 | 166 | DRM_DEBUG("\n"); |
1da177e4 | 167 | |
22eae947 DA |
168 | if (dev->driver->lastclose) |
169 | dev->driver->lastclose(dev); | |
170 | DRM_DEBUG("driver lastclose completed\n"); | |
1da177e4 | 171 | |
f453ba04 | 172 | if (dev->irq_enabled && !drm_core_check_feature(dev, DRIVER_MODESET)) |
b5e89ed5 | 173 | drm_irq_uninstall(dev); |
1da177e4 | 174 | |
30e2fb18 | 175 | mutex_lock(&dev->struct_mutex); |
d4e2cbe9 DA |
176 | |
177 | /* Free drawable information memory */ | |
178 | drm_drawable_free_all(dev); | |
b5e89ed5 | 179 | del_timer(&dev->timer); |
1da177e4 | 180 | |
b5e89ed5 | 181 | /* Clear AGP information */ |
f453ba04 | 182 | if (drm_core_has_AGP(dev) && dev->agp && |
955b12de | 183 | !drm_core_check_feature(dev, DRIVER_MODESET)) { |
55910517 | 184 | struct drm_agp_mem *entry, *tempe; |
1da177e4 | 185 | |
b5e89ed5 DA |
186 | /* Remove AGP resources, but leave dev->agp |
187 | intact until drv_cleanup is called. */ | |
bd1b331f | 188 | list_for_each_entry_safe(entry, tempe, &dev->agp->memory, head) { |
b5e89ed5 DA |
189 | if (entry->bound) |
190 | drm_unbind_agp(entry->memory); | |
191 | drm_free_agp(entry->memory, entry->pages); | |
9a298b2a | 192 | kfree(entry); |
1da177e4 | 193 | } |
bd1b331f | 194 | INIT_LIST_HEAD(&dev->agp->memory); |
1da177e4 | 195 | |
7ab98401 | 196 | if (dev->agp->acquired) |
b5e89ed5 | 197 | drm_agp_release(dev); |
1da177e4 LT |
198 | |
199 | dev->agp->acquired = 0; | |
b5e89ed5 | 200 | dev->agp->enabled = 0; |
1da177e4 | 201 | } |
f453ba04 DA |
202 | if (drm_core_check_feature(dev, DRIVER_SG) && dev->sg && |
203 | !drm_core_check_feature(dev, DRIVER_MODESET)) { | |
836cf046 DA |
204 | drm_sg_cleanup(dev->sg); |
205 | dev->sg = NULL; | |
206 | } | |
1da177e4 | 207 | |
b5e89ed5 | 208 | /* Clear vma list (only built for debugging) */ |
bd1b331f DA |
209 | list_for_each_entry_safe(vma, vma_temp, &dev->vmalist, head) { |
210 | list_del(&vma->head); | |
9a298b2a | 211 | kfree(vma); |
1da177e4 LT |
212 | } |
213 | ||
b5e89ed5 DA |
214 | if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE) && dev->queuelist) { |
215 | for (i = 0; i < dev->queue_count; i++) { | |
9a298b2a EA |
216 | kfree(dev->queuelist[i]); |
217 | dev->queuelist[i] = NULL; | |
1da177e4 | 218 | } |
9a298b2a | 219 | kfree(dev->queuelist); |
1da177e4 LT |
220 | dev->queuelist = NULL; |
221 | } | |
222 | dev->queue_count = 0; | |
223 | ||
f453ba04 DA |
224 | if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) && |
225 | !drm_core_check_feature(dev, DRIVER_MODESET)) | |
b5e89ed5 | 226 | drm_dma_takedown(dev); |
1da177e4 | 227 | |
a2c0a97b | 228 | dev->dev_mapping = NULL; |
30e2fb18 | 229 | mutex_unlock(&dev->struct_mutex); |
1da177e4 | 230 | |
22eae947 | 231 | DRM_DEBUG("lastclose completed\n"); |
1da177e4 LT |
232 | return 0; |
233 | } | |
234 | ||
1da177e4 LT |
235 | /** |
236 | * Module initialization. Called via init_module at module load time, or via | |
237 | * linux/init/main.c (this is not currently supported). | |
238 | * | |
239 | * \return zero on success or a negative number on failure. | |
240 | * | |
241 | * Initializes an array of drm_device structures, and attempts to | |
242 | * initialize all available devices, using consecutive minors, registering the | |
243 | * stubs and initializing the AGP device. | |
b5e89ed5 | 244 | * |
1da177e4 LT |
245 | * Expands the \c DRIVER_PREINIT and \c DRIVER_POST_INIT macros before and |
246 | * after the initialization for driver customization. | |
247 | */ | |
b5e89ed5 | 248 | int drm_init(struct drm_driver *driver) |
1da177e4 LT |
249 | { |
250 | struct pci_dev *pdev = NULL; | |
112b715e | 251 | const struct pci_device_id *pid; |
1da177e4 LT |
252 | int i; |
253 | ||
b5e89ed5 | 254 | DRM_DEBUG("\n"); |
1da177e4 | 255 | |
e7f7ab45 DA |
256 | INIT_LIST_HEAD(&driver->device_list); |
257 | ||
112b715e KH |
258 | if (driver->driver_features & DRIVER_MODESET) |
259 | return pci_register_driver(&driver->pci_driver); | |
260 | ||
261 | /* If not using KMS, fall back to stealth mode manual scanning. */ | |
b5e89ed5 | 262 | for (i = 0; driver->pci_driver.id_table[i].vendor != 0; i++) { |
112b715e | 263 | pid = &driver->pci_driver.id_table[i]; |
b5e89ed5 | 264 | |
afa21e05 DA |
265 | /* Loop around setting up a DRM device for each PCI device |
266 | * matching our ID and device class. If we had the internal | |
267 | * function that pci_get_subsys and pci_get_class used, we'd | |
268 | * be able to just pass pid in instead of doing a two-stage | |
269 | * thing. | |
270 | */ | |
b5e89ed5 | 271 | pdev = NULL; |
b5e89ed5 DA |
272 | while ((pdev = |
273 | pci_get_subsys(pid->vendor, pid->device, pid->subvendor, | |
274 | pid->subdevice, pdev)) != NULL) { | |
afa21e05 DA |
275 | if ((pdev->class & pid->class_mask) != pid->class) |
276 | continue; | |
277 | ||
1da177e4 LT |
278 | /* stealth mode requires a manual probe */ |
279 | pci_dev_get(pdev); | |
280 | drm_get_dev(pdev, pid, driver); | |
281 | } | |
282 | } | |
283 | return 0; | |
284 | } | |
b5e89ed5 | 285 | |
1da177e4 LT |
286 | EXPORT_SYMBOL(drm_init); |
287 | ||
2c14f28b DA |
288 | void drm_exit(struct drm_driver *driver) |
289 | { | |
e7f7ab45 | 290 | struct drm_device *dev, *tmp; |
b5e89ed5 | 291 | DRM_DEBUG("\n"); |
1da177e4 | 292 | |
112b715e KH |
293 | if (driver->driver_features & DRIVER_MODESET) { |
294 | pci_unregister_driver(&driver->pci_driver); | |
295 | } else { | |
296 | list_for_each_entry_safe(dev, tmp, &driver->device_list, driver_item) | |
297 | drm_put_dev(dev); | |
298 | } | |
2c14f28b | 299 | |
b5e89ed5 | 300 | DRM_INFO("Module unloaded\n"); |
1da177e4 | 301 | } |
b5e89ed5 | 302 | |
1da177e4 LT |
303 | EXPORT_SYMBOL(drm_exit); |
304 | ||
305 | /** File operations structure */ | |
2b8693c0 | 306 | static const struct file_operations drm_stub_fops = { |
1da177e4 | 307 | .owner = THIS_MODULE, |
b5e89ed5 | 308 | .open = drm_stub_open |
1da177e4 LT |
309 | }; |
310 | ||
311 | static int __init drm_core_init(void) | |
312 | { | |
313 | int ret = -ENOMEM; | |
b5e89ed5 | 314 | |
2c14f28b | 315 | idr_init(&drm_minors_idr); |
b5e89ed5 | 316 | |
1da177e4 LT |
317 | if (register_chrdev(DRM_MAJOR, "drm", &drm_stub_fops)) |
318 | goto err_p1; | |
b5e89ed5 | 319 | |
1da177e4 LT |
320 | drm_class = drm_sysfs_create(THIS_MODULE, "drm"); |
321 | if (IS_ERR(drm_class)) { | |
b5e89ed5 | 322 | printk(KERN_ERR "DRM: Error creating drm class.\n"); |
1da177e4 LT |
323 | ret = PTR_ERR(drm_class); |
324 | goto err_p2; | |
325 | } | |
326 | ||
66600221 | 327 | drm_proc_root = proc_mkdir("dri", NULL); |
1da177e4 LT |
328 | if (!drm_proc_root) { |
329 | DRM_ERROR("Cannot create /proc/dri\n"); | |
330 | ret = -1; | |
331 | goto err_p3; | |
332 | } | |
b5e89ed5 | 333 | |
955b12de BG |
334 | drm_debugfs_root = debugfs_create_dir("dri", NULL); |
335 | if (!drm_debugfs_root) { | |
156f5a78 | 336 | DRM_ERROR("Cannot create /sys/kernel/debug/dri\n"); |
955b12de BG |
337 | ret = -1; |
338 | goto err_p3; | |
339 | } | |
340 | ||
b5e89ed5 DA |
341 | DRM_INFO("Initialized %s %d.%d.%d %s\n", |
342 | CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE); | |
1da177e4 | 343 | return 0; |
e8b962b6 JB |
344 | err_p3: |
345 | drm_sysfs_destroy(); | |
346 | err_p2: | |
1da177e4 | 347 | unregister_chrdev(DRM_MAJOR, "drm"); |
2c14f28b DA |
348 | |
349 | idr_destroy(&drm_minors_idr); | |
e8b962b6 | 350 | err_p1: |
1da177e4 LT |
351 | return ret; |
352 | } | |
353 | ||
b5e89ed5 | 354 | static void __exit drm_core_exit(void) |
1da177e4 LT |
355 | { |
356 | remove_proc_entry("dri", NULL); | |
955b12de | 357 | debugfs_remove(drm_debugfs_root); |
e8b962b6 | 358 | drm_sysfs_destroy(); |
1da177e4 LT |
359 | |
360 | unregister_chrdev(DRM_MAJOR, "drm"); | |
361 | ||
2c14f28b | 362 | idr_destroy(&drm_minors_idr); |
1da177e4 LT |
363 | } |
364 | ||
b5e89ed5 DA |
365 | module_init(drm_core_init); |
366 | module_exit(drm_core_exit); | |
1da177e4 | 367 | |
156822f7 AS |
368 | /** |
369 | * Copy and IOCTL return string to user space | |
370 | */ | |
371 | #define DRM_COPY(name, value) \ | |
372 | len = strlen(value); \ | |
373 | if (len > name##_len) len = name##_len; \ | |
374 | name##_len = strlen(value); \ | |
375 | if (len && name) { \ | |
376 | if (copy_to_user(name, value, len)) \ | |
377 | return -EFAULT; \ | |
378 | } | |
379 | ||
1da177e4 LT |
380 | /** |
381 | * Get version information | |
382 | * | |
383 | * \param inode device inode. | |
384 | * \param filp file pointer. | |
385 | * \param cmd command. | |
386 | * \param arg user argument, pointing to a drm_version structure. | |
387 | * \return zero on success or negative number on failure. | |
388 | * | |
389 | * Fills in the version information in \p arg. | |
390 | */ | |
c153f45f EA |
391 | static int drm_version(struct drm_device *dev, void *data, |
392 | struct drm_file *file_priv) | |
1da177e4 | 393 | { |
c153f45f | 394 | struct drm_version *version = data; |
22eae947 | 395 | int len; |
1da177e4 | 396 | |
c153f45f EA |
397 | version->version_major = dev->driver->major; |
398 | version->version_minor = dev->driver->minor; | |
399 | version->version_patchlevel = dev->driver->patchlevel; | |
400 | DRM_COPY(version->name, dev->driver->name); | |
401 | DRM_COPY(version->date, dev->driver->date); | |
402 | DRM_COPY(version->desc, dev->driver->desc); | |
b5e89ed5 | 403 | |
1da177e4 LT |
404 | return 0; |
405 | } | |
406 | ||
b5e89ed5 | 407 | /** |
1da177e4 LT |
408 | * Called whenever a process performs an ioctl on /dev/drm. |
409 | * | |
410 | * \param inode device inode. | |
6c340eac | 411 | * \param file_priv DRM file private. |
1da177e4 LT |
412 | * \param cmd command. |
413 | * \param arg user argument. | |
414 | * \return zero on success or negative number on failure. | |
415 | * | |
416 | * Looks up the ioctl function in the ::ioctls table, checking for root | |
417 | * previleges if so required, and dispatches to the respective function. | |
418 | */ | |
b5e89ed5 DA |
419 | int drm_ioctl(struct inode *inode, struct file *filp, |
420 | unsigned int cmd, unsigned long arg) | |
1da177e4 | 421 | { |
6c340eac | 422 | struct drm_file *file_priv = filp->private_data; |
2c14f28b | 423 | struct drm_device *dev = file_priv->minor->dev; |
c153f45f | 424 | struct drm_ioctl_desc *ioctl; |
1da177e4 LT |
425 | drm_ioctl_t *func; |
426 | unsigned int nr = DRM_IOCTL_NR(cmd); | |
427 | int retcode = -EINVAL; | |
955a23eb | 428 | char stack_kdata[128]; |
c153f45f | 429 | char *kdata = NULL; |
1da177e4 | 430 | |
b5e89ed5 DA |
431 | atomic_inc(&dev->ioctl_count); |
432 | atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); | |
6c340eac | 433 | ++file_priv->ioctl_count; |
1da177e4 | 434 | |
b5e89ed5 | 435 | DRM_DEBUG("pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%lx, auth=%d\n", |
ba25f9dc | 436 | task_pid_nr(current), cmd, nr, |
2c14f28b | 437 | (long)old_encode_dev(file_priv->minor->device), |
6c340eac | 438 | file_priv->authenticated); |
b5e89ed5 | 439 | |
0515b93c | 440 | if ((nr >= DRM_CORE_IOCTL_COUNT) && |
99da6d86 TH |
441 | ((nr < DRM_COMMAND_BASE) || (nr >= DRM_COMMAND_END))) |
442 | goto err_i1; | |
0515b93c DA |
443 | if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END) && |
444 | (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) | |
1da177e4 | 445 | ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE]; |
858a3685 | 446 | else if ((nr >= DRM_COMMAND_END) || (nr < DRM_COMMAND_BASE)) { |
99da6d86 | 447 | ioctl = &drm_ioctls[nr]; |
858a3685 DA |
448 | cmd = ioctl->cmd; |
449 | } else | |
1da177e4 | 450 | goto err_i1; |
b5e89ed5 | 451 | |
41ee2ff4 | 452 | /* Do not trust userspace, use our own definition */ |
1da177e4 LT |
453 | func = ioctl->func; |
454 | /* is there a local override? */ | |
455 | if ((nr == DRM_IOCTL_NR(DRM_IOCTL_DMA)) && dev->driver->dma_ioctl) | |
456 | func = dev->driver->dma_ioctl; | |
b5e89ed5 DA |
457 | |
458 | if (!func) { | |
459 | DRM_DEBUG("no function\n"); | |
1da177e4 | 460 | retcode = -EINVAL; |
a7a2cc31 | 461 | } else if (((ioctl->flags & DRM_ROOT_ONLY) && !capable(CAP_SYS_ADMIN)) || |
6c340eac | 462 | ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) || |
59738d5c JB |
463 | ((ioctl->flags & DRM_MASTER) && !file_priv->is_master) || |
464 | (!(ioctl->flags & DRM_CONTROL_ALLOW) && (file_priv->minor->type == DRM_MINOR_CONTROL))) { | |
1da177e4 LT |
465 | retcode = -EACCES; |
466 | } else { | |
c153f45f | 467 | if (cmd & (IOC_IN | IOC_OUT)) { |
955a23eb EA |
468 | if (_IOC_SIZE(cmd) <= sizeof(stack_kdata)) { |
469 | kdata = stack_kdata; | |
470 | } else { | |
471 | kdata = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL); | |
472 | if (!kdata) { | |
473 | retcode = -ENOMEM; | |
474 | goto err_i1; | |
475 | } | |
9d5b3ffc | 476 | } |
c153f45f EA |
477 | } |
478 | ||
479 | if (cmd & IOC_IN) { | |
480 | if (copy_from_user(kdata, (void __user *)arg, | |
481 | _IOC_SIZE(cmd)) != 0) { | |
9d5b3ffc | 482 | retcode = -EFAULT; |
c153f45f EA |
483 | goto err_i1; |
484 | } | |
485 | } | |
486 | retcode = func(dev, kdata, file_priv); | |
487 | ||
9b6fe313 | 488 | if (cmd & IOC_OUT) { |
c153f45f EA |
489 | if (copy_to_user((void __user *)arg, kdata, |
490 | _IOC_SIZE(cmd)) != 0) | |
9d5b3ffc | 491 | retcode = -EFAULT; |
c153f45f | 492 | } |
1da177e4 | 493 | } |
b5e89ed5 DA |
494 | |
495 | err_i1: | |
955a23eb | 496 | if (kdata != stack_kdata) |
c153f45f | 497 | kfree(kdata); |
b5e89ed5 DA |
498 | atomic_dec(&dev->ioctl_count); |
499 | if (retcode) | |
500 | DRM_DEBUG("ret = %x\n", retcode); | |
1da177e4 LT |
501 | return retcode; |
502 | } | |
1da177e4 | 503 | |
b5e89ed5 | 504 | EXPORT_SYMBOL(drm_ioctl); |
da509d7a | 505 | |
f77d390c | 506 | struct drm_local_map *drm_getsarea(struct drm_device *dev) |
da509d7a | 507 | { |
55910517 | 508 | struct drm_map_list *entry; |
da509d7a | 509 | |
6f710105 | 510 | list_for_each_entry(entry, &dev->maplist, head) { |
da509d7a DA |
511 | if (entry->map && entry->map->type == _DRM_SHM && |
512 | (entry->map->flags & _DRM_CONTAINS_LOCK)) { | |
513 | return entry->map; | |
514 | } | |
515 | } | |
516 | return NULL; | |
517 | } | |
518 | EXPORT_SYMBOL(drm_getsarea); |