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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 | ||
49 | #include "drmP.h" | |
50 | #include "drm_core.h" | |
51 | ||
c153f45f EA |
52 | static int drm_version(struct drm_device *dev, void *data, |
53 | struct drm_file *file_priv); | |
c94f7029 | 54 | |
1da177e4 | 55 | /** Ioctl table */ |
c153f45f EA |
56 | static struct drm_ioctl_desc drm_ioctls[] = { |
57 | DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0), | |
58 | DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0), | |
59 | DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0), | |
60 | DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY), | |
61 | DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0), | |
62 | DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0), | |
63 | DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0), | |
64 | DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER|DRM_ROOT_ONLY), | |
65 | ||
66 | DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
67 | DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
68 | DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
69 | DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
70 | ||
71 | DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
72 | DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH), | |
73 | ||
74 | DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
75 | DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH), | |
76 | ||
77 | DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY), | |
78 | DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
79 | DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
80 | DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH), | |
81 | DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
82 | DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
83 | DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH), | |
84 | ||
85 | DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
86 | DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
87 | ||
88 | DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH), | |
89 | DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH), | |
90 | ||
91 | DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH), | |
92 | ||
93 | DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
94 | DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
95 | DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH), | |
96 | DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH), | |
97 | DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH), | |
1da177e4 | 98 | /* The DRM_IOCTL_DMA ioctl should be defined by the driver. */ |
c153f45f | 99 | DRM_IOCTL_DEF(DRM_IOCTL_DMA, NULL, DRM_AUTH), |
1da177e4 | 100 | |
c153f45f | 101 | DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
1da177e4 LT |
102 | |
103 | #if __OS_HAS_AGP | |
c153f45f EA |
104 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
105 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
106 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
107 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH), | |
108 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
109 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
110 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
111 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
1da177e4 LT |
112 | #endif |
113 | ||
c153f45f EA |
114 | DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
115 | DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
1da177e4 | 116 | |
c153f45f | 117 | DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, 0), |
bea5679f | 118 | |
c153f45f | 119 | DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_update_drawable_info, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
1da177e4 LT |
120 | }; |
121 | ||
0515b93c | 122 | #define DRM_CORE_IOCTL_COUNT ARRAY_SIZE( drm_ioctls ) |
1da177e4 LT |
123 | |
124 | /** | |
125 | * Take down the DRM device. | |
126 | * | |
127 | * \param dev DRM device structure. | |
128 | * | |
129 | * Frees every resource in \p dev. | |
130 | * | |
aff138ab | 131 | * \sa drm_device |
1da177e4 | 132 | */ |
84b1fd10 | 133 | int drm_lastclose(struct drm_device * dev) |
1da177e4 | 134 | { |
8fc2fdf4 | 135 | struct drm_magic_entry *pt, *next; |
55910517 | 136 | struct drm_map_list *r_list, *list_t; |
8fc2fdf4 | 137 | struct drm_vma_entry *vma, *vma_temp; |
1da177e4 LT |
138 | int i; |
139 | ||
b5e89ed5 | 140 | DRM_DEBUG("\n"); |
1da177e4 | 141 | |
22eae947 DA |
142 | if (dev->driver->lastclose) |
143 | dev->driver->lastclose(dev); | |
144 | DRM_DEBUG("driver lastclose completed\n"); | |
1da177e4 LT |
145 | |
146 | if (dev->unique) { | |
147 | drm_free(dev->unique, strlen(dev->unique) + 1, DRM_MEM_DRIVER); | |
148 | dev->unique = NULL; | |
149 | dev->unique_len = 0; | |
150 | } | |
151 | ||
b5e89ed5 DA |
152 | if (dev->irq_enabled) |
153 | drm_irq_uninstall(dev); | |
1da177e4 | 154 | |
30e2fb18 | 155 | mutex_lock(&dev->struct_mutex); |
d4e2cbe9 DA |
156 | |
157 | /* Free drawable information memory */ | |
158 | drm_drawable_free_all(dev); | |
b5e89ed5 | 159 | del_timer(&dev->timer); |
1da177e4 | 160 | |
b5e89ed5 | 161 | /* Clear pid list */ |
0a0c721d TH |
162 | if (dev->magicfree.next) { |
163 | list_for_each_entry_safe(pt, next, &dev->magicfree, head) { | |
164 | list_del(&pt->head); | |
165 | drm_ht_remove_item(&dev->magiclist, &pt->hash_item); | |
166 | drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC); | |
167 | } | |
1f4eccfd | 168 | drm_ht_remove(&dev->magiclist); |
1da177e4 LT |
169 | } |
170 | ||
b5e89ed5 | 171 | /* Clear AGP information */ |
1da177e4 | 172 | if (drm_core_has_AGP(dev) && dev->agp) { |
55910517 | 173 | struct drm_agp_mem *entry, *tempe; |
1da177e4 | 174 | |
b5e89ed5 DA |
175 | /* Remove AGP resources, but leave dev->agp |
176 | intact until drv_cleanup is called. */ | |
bd1b331f | 177 | list_for_each_entry_safe(entry, tempe, &dev->agp->memory, head) { |
b5e89ed5 DA |
178 | if (entry->bound) |
179 | drm_unbind_agp(entry->memory); | |
180 | drm_free_agp(entry->memory, entry->pages); | |
181 | drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS); | |
1da177e4 | 182 | } |
bd1b331f | 183 | INIT_LIST_HEAD(&dev->agp->memory); |
1da177e4 | 184 | |
7ab98401 | 185 | if (dev->agp->acquired) |
b5e89ed5 | 186 | drm_agp_release(dev); |
1da177e4 LT |
187 | |
188 | dev->agp->acquired = 0; | |
b5e89ed5 | 189 | dev->agp->enabled = 0; |
1da177e4 | 190 | } |
836cf046 DA |
191 | if (drm_core_check_feature(dev, DRIVER_SG) && dev->sg) { |
192 | drm_sg_cleanup(dev->sg); | |
193 | dev->sg = NULL; | |
194 | } | |
1da177e4 | 195 | |
b5e89ed5 | 196 | /* Clear vma list (only built for debugging) */ |
bd1b331f DA |
197 | list_for_each_entry_safe(vma, vma_temp, &dev->vmalist, head) { |
198 | list_del(&vma->head); | |
199 | drm_free(vma, sizeof(*vma), DRM_MEM_VMAS); | |
1da177e4 LT |
200 | } |
201 | ||
bd1b331f | 202 | list_for_each_entry_safe(r_list, list_t, &dev->maplist, head) { |
e3236a11 DA |
203 | if (!(r_list->map->flags & _DRM_DRIVER)) { |
204 | drm_rmmap_locked(dev, r_list->map); | |
205 | r_list = NULL; | |
206 | } | |
b5e89ed5 DA |
207 | } |
208 | ||
209 | if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE) && dev->queuelist) { | |
210 | for (i = 0; i < dev->queue_count; i++) { | |
211 | if (dev->queuelist[i]) { | |
212 | drm_free(dev->queuelist[i], | |
213 | sizeof(*dev->queuelist[0]), | |
214 | DRM_MEM_QUEUES); | |
1da177e4 LT |
215 | dev->queuelist[i] = NULL; |
216 | } | |
217 | } | |
b5e89ed5 DA |
218 | drm_free(dev->queuelist, |
219 | dev->queue_slots * sizeof(*dev->queuelist), | |
220 | DRM_MEM_QUEUES); | |
1da177e4 LT |
221 | dev->queuelist = NULL; |
222 | } | |
223 | dev->queue_count = 0; | |
224 | ||
225 | if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) | |
b5e89ed5 | 226 | drm_dma_takedown(dev); |
1da177e4 | 227 | |
b5e89ed5 DA |
228 | if (dev->lock.hw_lock) { |
229 | dev->sigdata.lock = dev->lock.hw_lock = NULL; /* SHM removed */ | |
6c340eac | 230 | dev->lock.file_priv = NULL; |
b5e89ed5 | 231 | wake_up_interruptible(&dev->lock.lock_queue); |
1da177e4 | 232 | } |
30e2fb18 | 233 | mutex_unlock(&dev->struct_mutex); |
1da177e4 | 234 | |
22eae947 | 235 | DRM_DEBUG("lastclose completed\n"); |
1da177e4 LT |
236 | return 0; |
237 | } | |
238 | ||
1da177e4 LT |
239 | /** |
240 | * Module initialization. Called via init_module at module load time, or via | |
241 | * linux/init/main.c (this is not currently supported). | |
242 | * | |
243 | * \return zero on success or a negative number on failure. | |
244 | * | |
245 | * Initializes an array of drm_device structures, and attempts to | |
246 | * initialize all available devices, using consecutive minors, registering the | |
247 | * stubs and initializing the AGP device. | |
b5e89ed5 | 248 | * |
1da177e4 LT |
249 | * Expands the \c DRIVER_PREINIT and \c DRIVER_POST_INIT macros before and |
250 | * after the initialization for driver customization. | |
251 | */ | |
b5e89ed5 | 252 | int drm_init(struct drm_driver *driver) |
1da177e4 LT |
253 | { |
254 | struct pci_dev *pdev = NULL; | |
255 | struct pci_device_id *pid; | |
256 | int i; | |
257 | ||
b5e89ed5 | 258 | DRM_DEBUG("\n"); |
1da177e4 | 259 | |
b5e89ed5 | 260 | for (i = 0; driver->pci_driver.id_table[i].vendor != 0; i++) { |
1da177e4 | 261 | pid = (struct pci_device_id *)&driver->pci_driver.id_table[i]; |
b5e89ed5 DA |
262 | |
263 | pdev = NULL; | |
264 | /* pass back in pdev to account for multiple identical cards */ | |
265 | while ((pdev = | |
266 | pci_get_subsys(pid->vendor, pid->device, pid->subvendor, | |
267 | pid->subdevice, pdev)) != NULL) { | |
1da177e4 LT |
268 | /* stealth mode requires a manual probe */ |
269 | pci_dev_get(pdev); | |
270 | drm_get_dev(pdev, pid, driver); | |
271 | } | |
272 | } | |
273 | return 0; | |
274 | } | |
b5e89ed5 | 275 | |
1da177e4 LT |
276 | EXPORT_SYMBOL(drm_init); |
277 | ||
278 | /** | |
279 | * Called via cleanup_module() at module unload time. | |
280 | * | |
22eae947 | 281 | * Cleans up all DRM device, calling drm_lastclose(). |
b5e89ed5 | 282 | * |
aff138ab | 283 | * \sa drm_init |
1da177e4 | 284 | */ |
84b1fd10 | 285 | static void drm_cleanup(struct drm_device * dev) |
1da177e4 | 286 | { |
b5e89ed5 | 287 | DRM_DEBUG("\n"); |
1da177e4 LT |
288 | |
289 | if (!dev) { | |
290 | DRM_ERROR("cleanup called no dev\n"); | |
291 | return; | |
292 | } | |
293 | ||
22eae947 | 294 | drm_lastclose(dev); |
1da177e4 | 295 | |
1da177e4 LT |
296 | if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) && |
297 | dev->agp && dev->agp->agp_mtrr >= 0) { | |
298 | int retval; | |
b5e89ed5 DA |
299 | retval = mtrr_del(dev->agp->agp_mtrr, |
300 | dev->agp->agp_info.aper_base, | |
301 | dev->agp->agp_info.aper_size * 1024 * 1024); | |
302 | DRM_DEBUG("mtrr_del=%d\n", retval); | |
1da177e4 | 303 | } |
b5e89ed5 DA |
304 | |
305 | if (drm_core_has_AGP(dev) && dev->agp) { | |
306 | drm_free(dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS); | |
1da177e4 LT |
307 | dev->agp = NULL; |
308 | } | |
309 | ||
22eae947 DA |
310 | if (dev->driver->unload) |
311 | dev->driver->unload(dev); | |
b5e89ed5 | 312 | |
e3236a11 DA |
313 | drm_ht_remove(&dev->map_hash); |
314 | drm_ctxbitmap_cleanup(dev); | |
315 | ||
2c14f28b | 316 | drm_put_minor(&dev->primary); |
b5e89ed5 DA |
317 | if (drm_put_dev(dev)) |
318 | DRM_ERROR("Cannot unload module\n"); | |
1da177e4 LT |
319 | } |
320 | ||
0e1451da | 321 | static int drm_minors_cleanup(int id, void *ptr, void *data) |
1da177e4 | 322 | { |
2c14f28b DA |
323 | struct drm_minor *minor = ptr; |
324 | struct drm_device *dev; | |
325 | struct drm_driver *driver = data; | |
326 | ||
327 | dev = minor->dev; | |
328 | if (minor->dev->driver != driver) | |
329 | return 0; | |
330 | ||
331 | if (minor->type != DRM_MINOR_LEGACY) | |
332 | return 0; | |
b5e89ed5 | 333 | |
2c14f28b DA |
334 | if (dev) |
335 | pci_dev_put(dev->pdev); | |
336 | drm_cleanup(dev); | |
337 | return 1; | |
338 | } | |
339 | ||
340 | void drm_exit(struct drm_driver *driver) | |
341 | { | |
b5e89ed5 | 342 | DRM_DEBUG("\n"); |
1da177e4 | 343 | |
2c14f28b DA |
344 | idr_for_each(&drm_minors_idr, &drm_minors_cleanup, driver); |
345 | ||
b5e89ed5 | 346 | DRM_INFO("Module unloaded\n"); |
1da177e4 | 347 | } |
b5e89ed5 | 348 | |
1da177e4 LT |
349 | EXPORT_SYMBOL(drm_exit); |
350 | ||
351 | /** File operations structure */ | |
2b8693c0 | 352 | static const struct file_operations drm_stub_fops = { |
1da177e4 | 353 | .owner = THIS_MODULE, |
b5e89ed5 | 354 | .open = drm_stub_open |
1da177e4 LT |
355 | }; |
356 | ||
357 | static int __init drm_core_init(void) | |
358 | { | |
359 | int ret = -ENOMEM; | |
b5e89ed5 | 360 | |
2c14f28b | 361 | idr_init(&drm_minors_idr); |
b5e89ed5 | 362 | |
1da177e4 LT |
363 | if (register_chrdev(DRM_MAJOR, "drm", &drm_stub_fops)) |
364 | goto err_p1; | |
b5e89ed5 | 365 | |
1da177e4 LT |
366 | drm_class = drm_sysfs_create(THIS_MODULE, "drm"); |
367 | if (IS_ERR(drm_class)) { | |
b5e89ed5 | 368 | printk(KERN_ERR "DRM: Error creating drm class.\n"); |
1da177e4 LT |
369 | ret = PTR_ERR(drm_class); |
370 | goto err_p2; | |
371 | } | |
372 | ||
66600221 | 373 | drm_proc_root = proc_mkdir("dri", NULL); |
1da177e4 LT |
374 | if (!drm_proc_root) { |
375 | DRM_ERROR("Cannot create /proc/dri\n"); | |
376 | ret = -1; | |
377 | goto err_p3; | |
378 | } | |
b5e89ed5 | 379 | |
3260f9fd DA |
380 | drm_mem_init(); |
381 | ||
b5e89ed5 DA |
382 | DRM_INFO("Initialized %s %d.%d.%d %s\n", |
383 | CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE); | |
1da177e4 | 384 | return 0; |
e8b962b6 JB |
385 | err_p3: |
386 | drm_sysfs_destroy(); | |
387 | err_p2: | |
1da177e4 | 388 | unregister_chrdev(DRM_MAJOR, "drm"); |
2c14f28b DA |
389 | |
390 | idr_destroy(&drm_minors_idr); | |
e8b962b6 | 391 | err_p1: |
1da177e4 LT |
392 | return ret; |
393 | } | |
394 | ||
b5e89ed5 | 395 | static void __exit drm_core_exit(void) |
1da177e4 LT |
396 | { |
397 | remove_proc_entry("dri", NULL); | |
e8b962b6 | 398 | drm_sysfs_destroy(); |
1da177e4 LT |
399 | |
400 | unregister_chrdev(DRM_MAJOR, "drm"); | |
401 | ||
2c14f28b | 402 | idr_destroy(&drm_minors_idr); |
1da177e4 LT |
403 | } |
404 | ||
b5e89ed5 DA |
405 | module_init(drm_core_init); |
406 | module_exit(drm_core_exit); | |
1da177e4 LT |
407 | |
408 | /** | |
409 | * Get version information | |
410 | * | |
411 | * \param inode device inode. | |
412 | * \param filp file pointer. | |
413 | * \param cmd command. | |
414 | * \param arg user argument, pointing to a drm_version structure. | |
415 | * \return zero on success or negative number on failure. | |
416 | * | |
417 | * Fills in the version information in \p arg. | |
418 | */ | |
c153f45f EA |
419 | static int drm_version(struct drm_device *dev, void *data, |
420 | struct drm_file *file_priv) | |
1da177e4 | 421 | { |
c153f45f | 422 | struct drm_version *version = data; |
22eae947 | 423 | int len; |
1da177e4 | 424 | |
c153f45f EA |
425 | version->version_major = dev->driver->major; |
426 | version->version_minor = dev->driver->minor; | |
427 | version->version_patchlevel = dev->driver->patchlevel; | |
428 | DRM_COPY(version->name, dev->driver->name); | |
429 | DRM_COPY(version->date, dev->driver->date); | |
430 | DRM_COPY(version->desc, dev->driver->desc); | |
b5e89ed5 | 431 | |
1da177e4 LT |
432 | return 0; |
433 | } | |
434 | ||
b5e89ed5 | 435 | /** |
1da177e4 LT |
436 | * Called whenever a process performs an ioctl on /dev/drm. |
437 | * | |
438 | * \param inode device inode. | |
6c340eac | 439 | * \param file_priv DRM file private. |
1da177e4 LT |
440 | * \param cmd command. |
441 | * \param arg user argument. | |
442 | * \return zero on success or negative number on failure. | |
443 | * | |
444 | * Looks up the ioctl function in the ::ioctls table, checking for root | |
445 | * previleges if so required, and dispatches to the respective function. | |
446 | */ | |
b5e89ed5 DA |
447 | int drm_ioctl(struct inode *inode, struct file *filp, |
448 | unsigned int cmd, unsigned long arg) | |
1da177e4 | 449 | { |
6c340eac | 450 | struct drm_file *file_priv = filp->private_data; |
2c14f28b | 451 | struct drm_device *dev = file_priv->minor->dev; |
c153f45f | 452 | struct drm_ioctl_desc *ioctl; |
1da177e4 LT |
453 | drm_ioctl_t *func; |
454 | unsigned int nr = DRM_IOCTL_NR(cmd); | |
455 | int retcode = -EINVAL; | |
c153f45f | 456 | char *kdata = NULL; |
1da177e4 | 457 | |
b5e89ed5 DA |
458 | atomic_inc(&dev->ioctl_count); |
459 | atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); | |
6c340eac | 460 | ++file_priv->ioctl_count; |
1da177e4 | 461 | |
b5e89ed5 | 462 | DRM_DEBUG("pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%lx, auth=%d\n", |
ba25f9dc | 463 | task_pid_nr(current), cmd, nr, |
2c14f28b | 464 | (long)old_encode_dev(file_priv->minor->device), |
6c340eac | 465 | file_priv->authenticated); |
b5e89ed5 | 466 | |
0515b93c | 467 | if ((nr >= DRM_CORE_IOCTL_COUNT) && |
99da6d86 TH |
468 | ((nr < DRM_COMMAND_BASE) || (nr >= DRM_COMMAND_END))) |
469 | goto err_i1; | |
0515b93c DA |
470 | if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END) && |
471 | (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) | |
1da177e4 | 472 | ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE]; |
858a3685 | 473 | else if ((nr >= DRM_COMMAND_END) || (nr < DRM_COMMAND_BASE)) { |
99da6d86 | 474 | ioctl = &drm_ioctls[nr]; |
858a3685 DA |
475 | cmd = ioctl->cmd; |
476 | } else | |
1da177e4 | 477 | goto err_i1; |
b5e89ed5 | 478 | |
41ee2ff4 | 479 | /* Do not trust userspace, use our own definition */ |
1da177e4 LT |
480 | func = ioctl->func; |
481 | /* is there a local override? */ | |
482 | if ((nr == DRM_IOCTL_NR(DRM_IOCTL_DMA)) && dev->driver->dma_ioctl) | |
483 | func = dev->driver->dma_ioctl; | |
b5e89ed5 DA |
484 | |
485 | if (!func) { | |
486 | DRM_DEBUG("no function\n"); | |
1da177e4 | 487 | retcode = -EINVAL; |
a7a2cc31 | 488 | } else if (((ioctl->flags & DRM_ROOT_ONLY) && !capable(CAP_SYS_ADMIN)) || |
6c340eac EA |
489 | ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) || |
490 | ((ioctl->flags & DRM_MASTER) && !file_priv->master)) { | |
1da177e4 LT |
491 | retcode = -EACCES; |
492 | } else { | |
c153f45f EA |
493 | if (cmd & (IOC_IN | IOC_OUT)) { |
494 | kdata = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL); | |
9d5b3ffc DA |
495 | if (!kdata) { |
496 | retcode = -ENOMEM; | |
497 | goto err_i1; | |
498 | } | |
c153f45f EA |
499 | } |
500 | ||
501 | if (cmd & IOC_IN) { | |
502 | if (copy_from_user(kdata, (void __user *)arg, | |
503 | _IOC_SIZE(cmd)) != 0) { | |
9d5b3ffc | 504 | retcode = -EFAULT; |
c153f45f EA |
505 | goto err_i1; |
506 | } | |
507 | } | |
508 | retcode = func(dev, kdata, file_priv); | |
509 | ||
9d5b3ffc | 510 | if ((retcode == 0) && (cmd & IOC_OUT)) { |
c153f45f EA |
511 | if (copy_to_user((void __user *)arg, kdata, |
512 | _IOC_SIZE(cmd)) != 0) | |
9d5b3ffc | 513 | retcode = -EFAULT; |
c153f45f | 514 | } |
1da177e4 | 515 | } |
b5e89ed5 DA |
516 | |
517 | err_i1: | |
c153f45f EA |
518 | if (kdata) |
519 | kfree(kdata); | |
b5e89ed5 DA |
520 | atomic_dec(&dev->ioctl_count); |
521 | if (retcode) | |
522 | DRM_DEBUG("ret = %x\n", retcode); | |
1da177e4 LT |
523 | return retcode; |
524 | } | |
1da177e4 | 525 | |
b5e89ed5 | 526 | EXPORT_SYMBOL(drm_ioctl); |
da509d7a DA |
527 | |
528 | drm_local_map_t *drm_getsarea(struct drm_device *dev) | |
529 | { | |
55910517 | 530 | struct drm_map_list *entry; |
da509d7a | 531 | |
6f710105 | 532 | list_for_each_entry(entry, &dev->maplist, head) { |
da509d7a DA |
533 | if (entry->map && entry->map->type == _DRM_SHM && |
534 | (entry->map->flags & _DRM_CONTAINS_LOCK)) { | |
535 | return entry->map; | |
536 | } | |
537 | } | |
538 | return NULL; | |
539 | } | |
540 | EXPORT_SYMBOL(drm_getsarea); |