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> |
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), | |
d91d8a3f | 148 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_PAGE_FLIP, drm_mode_page_flip_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW), |
1da177e4 LT |
149 | }; |
150 | ||
0515b93c | 151 | #define DRM_CORE_IOCTL_COUNT ARRAY_SIZE( drm_ioctls ) |
1da177e4 LT |
152 | |
153 | /** | |
154 | * Take down the DRM device. | |
155 | * | |
156 | * \param dev DRM device structure. | |
157 | * | |
158 | * Frees every resource in \p dev. | |
159 | * | |
aff138ab | 160 | * \sa drm_device |
1da177e4 | 161 | */ |
84b1fd10 | 162 | int drm_lastclose(struct drm_device * dev) |
1da177e4 | 163 | { |
8fc2fdf4 | 164 | struct drm_vma_entry *vma, *vma_temp; |
1da177e4 LT |
165 | int i; |
166 | ||
b5e89ed5 | 167 | DRM_DEBUG("\n"); |
1da177e4 | 168 | |
22eae947 DA |
169 | if (dev->driver->lastclose) |
170 | dev->driver->lastclose(dev); | |
171 | DRM_DEBUG("driver lastclose completed\n"); | |
1da177e4 | 172 | |
f453ba04 | 173 | if (dev->irq_enabled && !drm_core_check_feature(dev, DRIVER_MODESET)) |
b5e89ed5 | 174 | drm_irq_uninstall(dev); |
1da177e4 | 175 | |
30e2fb18 | 176 | mutex_lock(&dev->struct_mutex); |
d4e2cbe9 DA |
177 | |
178 | /* Free drawable information memory */ | |
179 | drm_drawable_free_all(dev); | |
b5e89ed5 | 180 | del_timer(&dev->timer); |
1da177e4 | 181 | |
b5e89ed5 | 182 | /* Clear AGP information */ |
f453ba04 | 183 | if (drm_core_has_AGP(dev) && dev->agp && |
955b12de | 184 | !drm_core_check_feature(dev, DRIVER_MODESET)) { |
55910517 | 185 | struct drm_agp_mem *entry, *tempe; |
1da177e4 | 186 | |
b5e89ed5 DA |
187 | /* Remove AGP resources, but leave dev->agp |
188 | intact until drv_cleanup is called. */ | |
bd1b331f | 189 | list_for_each_entry_safe(entry, tempe, &dev->agp->memory, head) { |
b5e89ed5 DA |
190 | if (entry->bound) |
191 | drm_unbind_agp(entry->memory); | |
192 | drm_free_agp(entry->memory, entry->pages); | |
9a298b2a | 193 | kfree(entry); |
1da177e4 | 194 | } |
bd1b331f | 195 | INIT_LIST_HEAD(&dev->agp->memory); |
1da177e4 | 196 | |
7ab98401 | 197 | if (dev->agp->acquired) |
b5e89ed5 | 198 | drm_agp_release(dev); |
1da177e4 LT |
199 | |
200 | dev->agp->acquired = 0; | |
b5e89ed5 | 201 | dev->agp->enabled = 0; |
1da177e4 | 202 | } |
f453ba04 DA |
203 | if (drm_core_check_feature(dev, DRIVER_SG) && dev->sg && |
204 | !drm_core_check_feature(dev, DRIVER_MODESET)) { | |
836cf046 DA |
205 | drm_sg_cleanup(dev->sg); |
206 | dev->sg = NULL; | |
207 | } | |
1da177e4 | 208 | |
b5e89ed5 | 209 | /* Clear vma list (only built for debugging) */ |
bd1b331f DA |
210 | list_for_each_entry_safe(vma, vma_temp, &dev->vmalist, head) { |
211 | list_del(&vma->head); | |
9a298b2a | 212 | kfree(vma); |
1da177e4 LT |
213 | } |
214 | ||
b5e89ed5 DA |
215 | if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE) && dev->queuelist) { |
216 | for (i = 0; i < dev->queue_count; i++) { | |
9a298b2a EA |
217 | kfree(dev->queuelist[i]); |
218 | dev->queuelist[i] = NULL; | |
1da177e4 | 219 | } |
9a298b2a | 220 | kfree(dev->queuelist); |
1da177e4 LT |
221 | dev->queuelist = NULL; |
222 | } | |
223 | dev->queue_count = 0; | |
224 | ||
f453ba04 DA |
225 | if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) && |
226 | !drm_core_check_feature(dev, DRIVER_MODESET)) | |
b5e89ed5 | 227 | drm_dma_takedown(dev); |
1da177e4 | 228 | |
a2c0a97b | 229 | dev->dev_mapping = NULL; |
30e2fb18 | 230 | mutex_unlock(&dev->struct_mutex); |
1da177e4 | 231 | |
22eae947 | 232 | DRM_DEBUG("lastclose completed\n"); |
1da177e4 LT |
233 | return 0; |
234 | } | |
235 | ||
1da177e4 LT |
236 | /** |
237 | * Module initialization. Called via init_module at module load time, or via | |
238 | * linux/init/main.c (this is not currently supported). | |
239 | * | |
240 | * \return zero on success or a negative number on failure. | |
241 | * | |
242 | * Initializes an array of drm_device structures, and attempts to | |
243 | * initialize all available devices, using consecutive minors, registering the | |
244 | * stubs and initializing the AGP device. | |
b5e89ed5 | 245 | * |
1da177e4 LT |
246 | * Expands the \c DRIVER_PREINIT and \c DRIVER_POST_INIT macros before and |
247 | * after the initialization for driver customization. | |
248 | */ | |
b5e89ed5 | 249 | int drm_init(struct drm_driver *driver) |
1da177e4 LT |
250 | { |
251 | struct pci_dev *pdev = NULL; | |
112b715e | 252 | const struct pci_device_id *pid; |
1da177e4 LT |
253 | int i; |
254 | ||
b5e89ed5 | 255 | DRM_DEBUG("\n"); |
1da177e4 | 256 | |
e7f7ab45 DA |
257 | INIT_LIST_HEAD(&driver->device_list); |
258 | ||
112b715e KH |
259 | if (driver->driver_features & DRIVER_MODESET) |
260 | return pci_register_driver(&driver->pci_driver); | |
261 | ||
262 | /* If not using KMS, fall back to stealth mode manual scanning. */ | |
b5e89ed5 | 263 | for (i = 0; driver->pci_driver.id_table[i].vendor != 0; i++) { |
112b715e | 264 | pid = &driver->pci_driver.id_table[i]; |
b5e89ed5 | 265 | |
afa21e05 DA |
266 | /* Loop around setting up a DRM device for each PCI device |
267 | * matching our ID and device class. If we had the internal | |
268 | * function that pci_get_subsys and pci_get_class used, we'd | |
269 | * be able to just pass pid in instead of doing a two-stage | |
270 | * thing. | |
271 | */ | |
b5e89ed5 | 272 | pdev = NULL; |
b5e89ed5 DA |
273 | while ((pdev = |
274 | pci_get_subsys(pid->vendor, pid->device, pid->subvendor, | |
275 | pid->subdevice, pdev)) != NULL) { | |
afa21e05 DA |
276 | if ((pdev->class & pid->class_mask) != pid->class) |
277 | continue; | |
278 | ||
1da177e4 LT |
279 | /* stealth mode requires a manual probe */ |
280 | pci_dev_get(pdev); | |
281 | drm_get_dev(pdev, pid, driver); | |
282 | } | |
283 | } | |
284 | return 0; | |
285 | } | |
b5e89ed5 | 286 | |
1da177e4 LT |
287 | EXPORT_SYMBOL(drm_init); |
288 | ||
2c14f28b DA |
289 | void drm_exit(struct drm_driver *driver) |
290 | { | |
e7f7ab45 | 291 | struct drm_device *dev, *tmp; |
b5e89ed5 | 292 | DRM_DEBUG("\n"); |
1da177e4 | 293 | |
112b715e KH |
294 | if (driver->driver_features & DRIVER_MODESET) { |
295 | pci_unregister_driver(&driver->pci_driver); | |
296 | } else { | |
297 | list_for_each_entry_safe(dev, tmp, &driver->device_list, driver_item) | |
298 | drm_put_dev(dev); | |
299 | } | |
2c14f28b | 300 | |
b5e89ed5 | 301 | DRM_INFO("Module unloaded\n"); |
1da177e4 | 302 | } |
b5e89ed5 | 303 | |
1da177e4 LT |
304 | EXPORT_SYMBOL(drm_exit); |
305 | ||
306 | /** File operations structure */ | |
2b8693c0 | 307 | static const struct file_operations drm_stub_fops = { |
1da177e4 | 308 | .owner = THIS_MODULE, |
b5e89ed5 | 309 | .open = drm_stub_open |
1da177e4 LT |
310 | }; |
311 | ||
312 | static int __init drm_core_init(void) | |
313 | { | |
314 | int ret = -ENOMEM; | |
b5e89ed5 | 315 | |
2c14f28b | 316 | idr_init(&drm_minors_idr); |
b5e89ed5 | 317 | |
1da177e4 LT |
318 | if (register_chrdev(DRM_MAJOR, "drm", &drm_stub_fops)) |
319 | goto err_p1; | |
b5e89ed5 | 320 | |
1da177e4 LT |
321 | drm_class = drm_sysfs_create(THIS_MODULE, "drm"); |
322 | if (IS_ERR(drm_class)) { | |
b5e89ed5 | 323 | printk(KERN_ERR "DRM: Error creating drm class.\n"); |
1da177e4 LT |
324 | ret = PTR_ERR(drm_class); |
325 | goto err_p2; | |
326 | } | |
327 | ||
66600221 | 328 | drm_proc_root = proc_mkdir("dri", NULL); |
1da177e4 LT |
329 | if (!drm_proc_root) { |
330 | DRM_ERROR("Cannot create /proc/dri\n"); | |
331 | ret = -1; | |
332 | goto err_p3; | |
333 | } | |
b5e89ed5 | 334 | |
955b12de BG |
335 | drm_debugfs_root = debugfs_create_dir("dri", NULL); |
336 | if (!drm_debugfs_root) { | |
156f5a78 | 337 | DRM_ERROR("Cannot create /sys/kernel/debug/dri\n"); |
955b12de BG |
338 | ret = -1; |
339 | goto err_p3; | |
340 | } | |
341 | ||
b5e89ed5 DA |
342 | DRM_INFO("Initialized %s %d.%d.%d %s\n", |
343 | CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE); | |
1da177e4 | 344 | return 0; |
e8b962b6 JB |
345 | err_p3: |
346 | drm_sysfs_destroy(); | |
347 | err_p2: | |
1da177e4 | 348 | unregister_chrdev(DRM_MAJOR, "drm"); |
2c14f28b DA |
349 | |
350 | idr_destroy(&drm_minors_idr); | |
e8b962b6 | 351 | err_p1: |
1da177e4 LT |
352 | return ret; |
353 | } | |
354 | ||
b5e89ed5 | 355 | static void __exit drm_core_exit(void) |
1da177e4 LT |
356 | { |
357 | remove_proc_entry("dri", NULL); | |
955b12de | 358 | debugfs_remove(drm_debugfs_root); |
e8b962b6 | 359 | drm_sysfs_destroy(); |
1da177e4 LT |
360 | |
361 | unregister_chrdev(DRM_MAJOR, "drm"); | |
362 | ||
2c14f28b | 363 | idr_destroy(&drm_minors_idr); |
1da177e4 LT |
364 | } |
365 | ||
b5e89ed5 DA |
366 | module_init(drm_core_init); |
367 | module_exit(drm_core_exit); | |
1da177e4 | 368 | |
156822f7 AS |
369 | /** |
370 | * Copy and IOCTL return string to user space | |
371 | */ | |
140a45fc AS |
372 | static int drm_copy_field(char *buf, size_t *buf_len, const char *value) |
373 | { | |
374 | int len; | |
375 | ||
376 | /* don't overflow userbuf */ | |
377 | len = strlen(value); | |
378 | if (len > *buf_len) | |
379 | len = *buf_len; | |
380 | ||
381 | /* let userspace know exact length of driver value (which could be | |
382 | * larger than the userspace-supplied buffer) */ | |
383 | *buf_len = strlen(value); | |
384 | ||
385 | /* finally, try filling in the userbuf */ | |
386 | if (len && buf) | |
387 | if (copy_to_user(buf, value, len)) | |
388 | return -EFAULT; | |
389 | return 0; | |
390 | } | |
156822f7 | 391 | |
1da177e4 LT |
392 | /** |
393 | * Get version information | |
394 | * | |
395 | * \param inode device inode. | |
396 | * \param filp file pointer. | |
397 | * \param cmd command. | |
398 | * \param arg user argument, pointing to a drm_version structure. | |
399 | * \return zero on success or negative number on failure. | |
400 | * | |
401 | * Fills in the version information in \p arg. | |
402 | */ | |
c153f45f EA |
403 | static int drm_version(struct drm_device *dev, void *data, |
404 | struct drm_file *file_priv) | |
1da177e4 | 405 | { |
c153f45f | 406 | struct drm_version *version = data; |
dad07ca7 | 407 | int err; |
1da177e4 | 408 | |
c153f45f EA |
409 | version->version_major = dev->driver->major; |
410 | version->version_minor = dev->driver->minor; | |
411 | version->version_patchlevel = dev->driver->patchlevel; | |
dad07ca7 AS |
412 | err = drm_copy_field(version->name, &version->name_len, |
413 | dev->driver->name); | |
414 | if (!err) | |
415 | err = drm_copy_field(version->date, &version->date_len, | |
416 | dev->driver->date); | |
417 | if (!err) | |
418 | err = drm_copy_field(version->desc, &version->desc_len, | |
419 | dev->driver->desc); | |
420 | ||
421 | return err; | |
1da177e4 LT |
422 | } |
423 | ||
b5e89ed5 | 424 | /** |
1da177e4 LT |
425 | * Called whenever a process performs an ioctl on /dev/drm. |
426 | * | |
427 | * \param inode device inode. | |
6c340eac | 428 | * \param file_priv DRM file private. |
1da177e4 LT |
429 | * \param cmd command. |
430 | * \param arg user argument. | |
431 | * \return zero on success or negative number on failure. | |
432 | * | |
433 | * Looks up the ioctl function in the ::ioctls table, checking for root | |
434 | * previleges if so required, and dispatches to the respective function. | |
435 | */ | |
b5e89ed5 DA |
436 | int drm_ioctl(struct inode *inode, struct file *filp, |
437 | unsigned int cmd, unsigned long arg) | |
1da177e4 | 438 | { |
6c340eac | 439 | struct drm_file *file_priv = filp->private_data; |
2c14f28b | 440 | struct drm_device *dev = file_priv->minor->dev; |
c153f45f | 441 | struct drm_ioctl_desc *ioctl; |
1da177e4 LT |
442 | drm_ioctl_t *func; |
443 | unsigned int nr = DRM_IOCTL_NR(cmd); | |
444 | int retcode = -EINVAL; | |
955a23eb | 445 | char stack_kdata[128]; |
c153f45f | 446 | char *kdata = NULL; |
1da177e4 | 447 | |
b5e89ed5 DA |
448 | atomic_inc(&dev->ioctl_count); |
449 | atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); | |
6c340eac | 450 | ++file_priv->ioctl_count; |
1da177e4 | 451 | |
b5e89ed5 | 452 | DRM_DEBUG("pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%lx, auth=%d\n", |
ba25f9dc | 453 | task_pid_nr(current), cmd, nr, |
2c14f28b | 454 | (long)old_encode_dev(file_priv->minor->device), |
6c340eac | 455 | file_priv->authenticated); |
b5e89ed5 | 456 | |
0515b93c | 457 | if ((nr >= DRM_CORE_IOCTL_COUNT) && |
99da6d86 TH |
458 | ((nr < DRM_COMMAND_BASE) || (nr >= DRM_COMMAND_END))) |
459 | goto err_i1; | |
0515b93c DA |
460 | if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END) && |
461 | (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) | |
1da177e4 | 462 | ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE]; |
858a3685 | 463 | else if ((nr >= DRM_COMMAND_END) || (nr < DRM_COMMAND_BASE)) { |
99da6d86 | 464 | ioctl = &drm_ioctls[nr]; |
858a3685 DA |
465 | cmd = ioctl->cmd; |
466 | } else | |
1da177e4 | 467 | goto err_i1; |
b5e89ed5 | 468 | |
41ee2ff4 | 469 | /* Do not trust userspace, use our own definition */ |
1da177e4 LT |
470 | func = ioctl->func; |
471 | /* is there a local override? */ | |
472 | if ((nr == DRM_IOCTL_NR(DRM_IOCTL_DMA)) && dev->driver->dma_ioctl) | |
473 | func = dev->driver->dma_ioctl; | |
b5e89ed5 DA |
474 | |
475 | if (!func) { | |
476 | DRM_DEBUG("no function\n"); | |
1da177e4 | 477 | retcode = -EINVAL; |
a7a2cc31 | 478 | } else if (((ioctl->flags & DRM_ROOT_ONLY) && !capable(CAP_SYS_ADMIN)) || |
6c340eac | 479 | ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) || |
59738d5c JB |
480 | ((ioctl->flags & DRM_MASTER) && !file_priv->is_master) || |
481 | (!(ioctl->flags & DRM_CONTROL_ALLOW) && (file_priv->minor->type == DRM_MINOR_CONTROL))) { | |
1da177e4 LT |
482 | retcode = -EACCES; |
483 | } else { | |
c153f45f | 484 | if (cmd & (IOC_IN | IOC_OUT)) { |
955a23eb EA |
485 | if (_IOC_SIZE(cmd) <= sizeof(stack_kdata)) { |
486 | kdata = stack_kdata; | |
487 | } else { | |
488 | kdata = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL); | |
489 | if (!kdata) { | |
490 | retcode = -ENOMEM; | |
491 | goto err_i1; | |
492 | } | |
9d5b3ffc | 493 | } |
c153f45f EA |
494 | } |
495 | ||
496 | if (cmd & IOC_IN) { | |
497 | if (copy_from_user(kdata, (void __user *)arg, | |
498 | _IOC_SIZE(cmd)) != 0) { | |
9d5b3ffc | 499 | retcode = -EFAULT; |
c153f45f EA |
500 | goto err_i1; |
501 | } | |
502 | } | |
503 | retcode = func(dev, kdata, file_priv); | |
504 | ||
9b6fe313 | 505 | if (cmd & IOC_OUT) { |
c153f45f EA |
506 | if (copy_to_user((void __user *)arg, kdata, |
507 | _IOC_SIZE(cmd)) != 0) | |
9d5b3ffc | 508 | retcode = -EFAULT; |
c153f45f | 509 | } |
1da177e4 | 510 | } |
b5e89ed5 DA |
511 | |
512 | err_i1: | |
955a23eb | 513 | if (kdata != stack_kdata) |
c153f45f | 514 | kfree(kdata); |
b5e89ed5 DA |
515 | atomic_dec(&dev->ioctl_count); |
516 | if (retcode) | |
517 | DRM_DEBUG("ret = %x\n", retcode); | |
1da177e4 LT |
518 | return retcode; |
519 | } | |
1da177e4 | 520 | |
b5e89ed5 | 521 | EXPORT_SYMBOL(drm_ioctl); |
da509d7a | 522 | |
f77d390c | 523 | struct drm_local_map *drm_getsarea(struct drm_device *dev) |
da509d7a | 524 | { |
55910517 | 525 | struct drm_map_list *entry; |
da509d7a | 526 | |
6f710105 | 527 | list_for_each_entry(entry, &dev->maplist, head) { |
da509d7a DA |
528 | if (entry->map && entry->map->type == _DRM_SHM && |
529 | (entry->map->flags & _DRM_CONTAINS_LOCK)) { | |
530 | return entry->map; | |
531 | } | |
532 | } | |
533 | return NULL; | |
534 | } | |
535 | EXPORT_SYMBOL(drm_getsarea); |