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 | ||
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 | |
0a3e67a4 JB |
119 | DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0), |
120 | ||
c153f45f | 121 | DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_update_drawable_info, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
673a394b EA |
122 | |
123 | DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, 0), | |
124 | DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK, drm_gem_flink_ioctl, DRM_AUTH), | |
125 | DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH), | |
1da177e4 LT |
126 | }; |
127 | ||
0515b93c | 128 | #define DRM_CORE_IOCTL_COUNT ARRAY_SIZE( drm_ioctls ) |
1da177e4 LT |
129 | |
130 | /** | |
131 | * Take down the DRM device. | |
132 | * | |
133 | * \param dev DRM device structure. | |
134 | * | |
135 | * Frees every resource in \p dev. | |
136 | * | |
aff138ab | 137 | * \sa drm_device |
1da177e4 | 138 | */ |
84b1fd10 | 139 | int drm_lastclose(struct drm_device * dev) |
1da177e4 | 140 | { |
8fc2fdf4 | 141 | struct drm_magic_entry *pt, *next; |
55910517 | 142 | struct drm_map_list *r_list, *list_t; |
8fc2fdf4 | 143 | struct drm_vma_entry *vma, *vma_temp; |
1da177e4 LT |
144 | int i; |
145 | ||
b5e89ed5 | 146 | DRM_DEBUG("\n"); |
1da177e4 | 147 | |
22eae947 DA |
148 | if (dev->driver->lastclose) |
149 | dev->driver->lastclose(dev); | |
150 | DRM_DEBUG("driver lastclose completed\n"); | |
1da177e4 LT |
151 | |
152 | if (dev->unique) { | |
153 | drm_free(dev->unique, strlen(dev->unique) + 1, DRM_MEM_DRIVER); | |
154 | dev->unique = NULL; | |
155 | dev->unique_len = 0; | |
156 | } | |
157 | ||
b5e89ed5 DA |
158 | if (dev->irq_enabled) |
159 | drm_irq_uninstall(dev); | |
1da177e4 | 160 | |
30e2fb18 | 161 | mutex_lock(&dev->struct_mutex); |
d4e2cbe9 DA |
162 | |
163 | /* Free drawable information memory */ | |
164 | drm_drawable_free_all(dev); | |
b5e89ed5 | 165 | del_timer(&dev->timer); |
1da177e4 | 166 | |
b5e89ed5 | 167 | /* Clear pid list */ |
0a0c721d TH |
168 | if (dev->magicfree.next) { |
169 | list_for_each_entry_safe(pt, next, &dev->magicfree, head) { | |
170 | list_del(&pt->head); | |
171 | drm_ht_remove_item(&dev->magiclist, &pt->hash_item); | |
172 | drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC); | |
173 | } | |
1f4eccfd | 174 | drm_ht_remove(&dev->magiclist); |
1da177e4 LT |
175 | } |
176 | ||
b5e89ed5 | 177 | /* Clear AGP information */ |
1da177e4 | 178 | if (drm_core_has_AGP(dev) && dev->agp) { |
55910517 | 179 | struct drm_agp_mem *entry, *tempe; |
1da177e4 | 180 | |
b5e89ed5 DA |
181 | /* Remove AGP resources, but leave dev->agp |
182 | intact until drv_cleanup is called. */ | |
bd1b331f | 183 | list_for_each_entry_safe(entry, tempe, &dev->agp->memory, head) { |
b5e89ed5 DA |
184 | if (entry->bound) |
185 | drm_unbind_agp(entry->memory); | |
186 | drm_free_agp(entry->memory, entry->pages); | |
187 | drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS); | |
1da177e4 | 188 | } |
bd1b331f | 189 | INIT_LIST_HEAD(&dev->agp->memory); |
1da177e4 | 190 | |
7ab98401 | 191 | if (dev->agp->acquired) |
b5e89ed5 | 192 | drm_agp_release(dev); |
1da177e4 LT |
193 | |
194 | dev->agp->acquired = 0; | |
b5e89ed5 | 195 | dev->agp->enabled = 0; |
1da177e4 | 196 | } |
836cf046 DA |
197 | if (drm_core_check_feature(dev, DRIVER_SG) && dev->sg) { |
198 | drm_sg_cleanup(dev->sg); | |
199 | dev->sg = NULL; | |
200 | } | |
1da177e4 | 201 | |
b5e89ed5 | 202 | /* Clear vma list (only built for debugging) */ |
bd1b331f DA |
203 | list_for_each_entry_safe(vma, vma_temp, &dev->vmalist, head) { |
204 | list_del(&vma->head); | |
205 | drm_free(vma, sizeof(*vma), DRM_MEM_VMAS); | |
1da177e4 LT |
206 | } |
207 | ||
bd1b331f | 208 | list_for_each_entry_safe(r_list, list_t, &dev->maplist, head) { |
e3236a11 DA |
209 | if (!(r_list->map->flags & _DRM_DRIVER)) { |
210 | drm_rmmap_locked(dev, r_list->map); | |
211 | r_list = NULL; | |
212 | } | |
b5e89ed5 DA |
213 | } |
214 | ||
215 | if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE) && dev->queuelist) { | |
216 | for (i = 0; i < dev->queue_count; i++) { | |
217 | if (dev->queuelist[i]) { | |
218 | drm_free(dev->queuelist[i], | |
219 | sizeof(*dev->queuelist[0]), | |
220 | DRM_MEM_QUEUES); | |
1da177e4 LT |
221 | dev->queuelist[i] = NULL; |
222 | } | |
223 | } | |
b5e89ed5 DA |
224 | drm_free(dev->queuelist, |
225 | dev->queue_slots * sizeof(*dev->queuelist), | |
226 | DRM_MEM_QUEUES); | |
1da177e4 LT |
227 | dev->queuelist = NULL; |
228 | } | |
229 | dev->queue_count = 0; | |
230 | ||
231 | if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) | |
b5e89ed5 | 232 | drm_dma_takedown(dev); |
1da177e4 | 233 | |
b5e89ed5 DA |
234 | if (dev->lock.hw_lock) { |
235 | dev->sigdata.lock = dev->lock.hw_lock = NULL; /* SHM removed */ | |
6c340eac | 236 | dev->lock.file_priv = NULL; |
b5e89ed5 | 237 | wake_up_interruptible(&dev->lock.lock_queue); |
1da177e4 | 238 | } |
30e2fb18 | 239 | mutex_unlock(&dev->struct_mutex); |
1da177e4 | 240 | |
22eae947 | 241 | DRM_DEBUG("lastclose completed\n"); |
1da177e4 LT |
242 | return 0; |
243 | } | |
244 | ||
1da177e4 LT |
245 | /** |
246 | * Module initialization. Called via init_module at module load time, or via | |
247 | * linux/init/main.c (this is not currently supported). | |
248 | * | |
249 | * \return zero on success or a negative number on failure. | |
250 | * | |
251 | * Initializes an array of drm_device structures, and attempts to | |
252 | * initialize all available devices, using consecutive minors, registering the | |
253 | * stubs and initializing the AGP device. | |
b5e89ed5 | 254 | * |
1da177e4 LT |
255 | * Expands the \c DRIVER_PREINIT and \c DRIVER_POST_INIT macros before and |
256 | * after the initialization for driver customization. | |
257 | */ | |
b5e89ed5 | 258 | int drm_init(struct drm_driver *driver) |
1da177e4 LT |
259 | { |
260 | struct pci_dev *pdev = NULL; | |
261 | struct pci_device_id *pid; | |
262 | int i; | |
263 | ||
b5e89ed5 | 264 | DRM_DEBUG("\n"); |
1da177e4 | 265 | |
b5e89ed5 | 266 | for (i = 0; driver->pci_driver.id_table[i].vendor != 0; i++) { |
1da177e4 | 267 | pid = (struct pci_device_id *)&driver->pci_driver.id_table[i]; |
b5e89ed5 | 268 | |
afa21e05 DA |
269 | /* Loop around setting up a DRM device for each PCI device |
270 | * matching our ID and device class. If we had the internal | |
271 | * function that pci_get_subsys and pci_get_class used, we'd | |
272 | * be able to just pass pid in instead of doing a two-stage | |
273 | * thing. | |
274 | */ | |
b5e89ed5 | 275 | pdev = NULL; |
b5e89ed5 DA |
276 | while ((pdev = |
277 | pci_get_subsys(pid->vendor, pid->device, pid->subvendor, | |
278 | pid->subdevice, pdev)) != NULL) { | |
afa21e05 DA |
279 | if ((pdev->class & pid->class_mask) != pid->class) |
280 | continue; | |
281 | ||
1da177e4 LT |
282 | /* stealth mode requires a manual probe */ |
283 | pci_dev_get(pdev); | |
284 | drm_get_dev(pdev, pid, driver); | |
285 | } | |
286 | } | |
287 | return 0; | |
288 | } | |
b5e89ed5 | 289 | |
1da177e4 LT |
290 | EXPORT_SYMBOL(drm_init); |
291 | ||
292 | /** | |
293 | * Called via cleanup_module() at module unload time. | |
294 | * | |
22eae947 | 295 | * Cleans up all DRM device, calling drm_lastclose(). |
b5e89ed5 | 296 | * |
aff138ab | 297 | * \sa drm_init |
1da177e4 | 298 | */ |
84b1fd10 | 299 | static void drm_cleanup(struct drm_device * dev) |
1da177e4 | 300 | { |
b5e89ed5 | 301 | DRM_DEBUG("\n"); |
1da177e4 LT |
302 | |
303 | if (!dev) { | |
304 | DRM_ERROR("cleanup called no dev\n"); | |
305 | return; | |
306 | } | |
307 | ||
52440211 KP |
308 | drm_vblank_cleanup(dev); |
309 | ||
22eae947 | 310 | drm_lastclose(dev); |
1da177e4 | 311 | |
1da177e4 LT |
312 | if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) && |
313 | dev->agp && dev->agp->agp_mtrr >= 0) { | |
314 | int retval; | |
b5e89ed5 DA |
315 | retval = mtrr_del(dev->agp->agp_mtrr, |
316 | dev->agp->agp_info.aper_base, | |
317 | dev->agp->agp_info.aper_size * 1024 * 1024); | |
318 | DRM_DEBUG("mtrr_del=%d\n", retval); | |
1da177e4 | 319 | } |
b5e89ed5 DA |
320 | |
321 | if (drm_core_has_AGP(dev) && dev->agp) { | |
322 | drm_free(dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS); | |
1da177e4 LT |
323 | dev->agp = NULL; |
324 | } | |
325 | ||
22eae947 DA |
326 | if (dev->driver->unload) |
327 | dev->driver->unload(dev); | |
b5e89ed5 | 328 | |
e3236a11 DA |
329 | drm_ht_remove(&dev->map_hash); |
330 | drm_ctxbitmap_cleanup(dev); | |
331 | ||
2c14f28b | 332 | drm_put_minor(&dev->primary); |
b5e89ed5 DA |
333 | if (drm_put_dev(dev)) |
334 | DRM_ERROR("Cannot unload module\n"); | |
1da177e4 LT |
335 | } |
336 | ||
0e1451da | 337 | static int drm_minors_cleanup(int id, void *ptr, void *data) |
1da177e4 | 338 | { |
2c14f28b DA |
339 | struct drm_minor *minor = ptr; |
340 | struct drm_device *dev; | |
341 | struct drm_driver *driver = data; | |
342 | ||
343 | dev = minor->dev; | |
344 | if (minor->dev->driver != driver) | |
345 | return 0; | |
346 | ||
347 | if (minor->type != DRM_MINOR_LEGACY) | |
348 | return 0; | |
b5e89ed5 | 349 | |
2c14f28b DA |
350 | if (dev) |
351 | pci_dev_put(dev->pdev); | |
352 | drm_cleanup(dev); | |
353 | return 1; | |
354 | } | |
355 | ||
356 | void drm_exit(struct drm_driver *driver) | |
357 | { | |
b5e89ed5 | 358 | DRM_DEBUG("\n"); |
1da177e4 | 359 | |
2c14f28b DA |
360 | idr_for_each(&drm_minors_idr, &drm_minors_cleanup, driver); |
361 | ||
b5e89ed5 | 362 | DRM_INFO("Module unloaded\n"); |
1da177e4 | 363 | } |
b5e89ed5 | 364 | |
1da177e4 LT |
365 | EXPORT_SYMBOL(drm_exit); |
366 | ||
367 | /** File operations structure */ | |
2b8693c0 | 368 | static const struct file_operations drm_stub_fops = { |
1da177e4 | 369 | .owner = THIS_MODULE, |
b5e89ed5 | 370 | .open = drm_stub_open |
1da177e4 LT |
371 | }; |
372 | ||
373 | static int __init drm_core_init(void) | |
374 | { | |
375 | int ret = -ENOMEM; | |
b5e89ed5 | 376 | |
2c14f28b | 377 | idr_init(&drm_minors_idr); |
b5e89ed5 | 378 | |
1da177e4 LT |
379 | if (register_chrdev(DRM_MAJOR, "drm", &drm_stub_fops)) |
380 | goto err_p1; | |
b5e89ed5 | 381 | |
1da177e4 LT |
382 | drm_class = drm_sysfs_create(THIS_MODULE, "drm"); |
383 | if (IS_ERR(drm_class)) { | |
b5e89ed5 | 384 | printk(KERN_ERR "DRM: Error creating drm class.\n"); |
1da177e4 LT |
385 | ret = PTR_ERR(drm_class); |
386 | goto err_p2; | |
387 | } | |
388 | ||
66600221 | 389 | drm_proc_root = proc_mkdir("dri", NULL); |
1da177e4 LT |
390 | if (!drm_proc_root) { |
391 | DRM_ERROR("Cannot create /proc/dri\n"); | |
392 | ret = -1; | |
393 | goto err_p3; | |
394 | } | |
b5e89ed5 | 395 | |
3260f9fd DA |
396 | drm_mem_init(); |
397 | ||
b5e89ed5 DA |
398 | DRM_INFO("Initialized %s %d.%d.%d %s\n", |
399 | CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE); | |
1da177e4 | 400 | return 0; |
e8b962b6 JB |
401 | err_p3: |
402 | drm_sysfs_destroy(); | |
403 | err_p2: | |
1da177e4 | 404 | unregister_chrdev(DRM_MAJOR, "drm"); |
2c14f28b DA |
405 | |
406 | idr_destroy(&drm_minors_idr); | |
e8b962b6 | 407 | err_p1: |
1da177e4 LT |
408 | return ret; |
409 | } | |
410 | ||
b5e89ed5 | 411 | static void __exit drm_core_exit(void) |
1da177e4 LT |
412 | { |
413 | remove_proc_entry("dri", NULL); | |
e8b962b6 | 414 | drm_sysfs_destroy(); |
1da177e4 LT |
415 | |
416 | unregister_chrdev(DRM_MAJOR, "drm"); | |
417 | ||
2c14f28b | 418 | idr_destroy(&drm_minors_idr); |
1da177e4 LT |
419 | } |
420 | ||
b5e89ed5 DA |
421 | module_init(drm_core_init); |
422 | module_exit(drm_core_exit); | |
1da177e4 LT |
423 | |
424 | /** | |
425 | * Get version information | |
426 | * | |
427 | * \param inode device inode. | |
428 | * \param filp file pointer. | |
429 | * \param cmd command. | |
430 | * \param arg user argument, pointing to a drm_version structure. | |
431 | * \return zero on success or negative number on failure. | |
432 | * | |
433 | * Fills in the version information in \p arg. | |
434 | */ | |
c153f45f EA |
435 | static int drm_version(struct drm_device *dev, void *data, |
436 | struct drm_file *file_priv) | |
1da177e4 | 437 | { |
c153f45f | 438 | struct drm_version *version = data; |
22eae947 | 439 | int len; |
1da177e4 | 440 | |
c153f45f EA |
441 | version->version_major = dev->driver->major; |
442 | version->version_minor = dev->driver->minor; | |
443 | version->version_patchlevel = dev->driver->patchlevel; | |
444 | DRM_COPY(version->name, dev->driver->name); | |
445 | DRM_COPY(version->date, dev->driver->date); | |
446 | DRM_COPY(version->desc, dev->driver->desc); | |
b5e89ed5 | 447 | |
1da177e4 LT |
448 | return 0; |
449 | } | |
450 | ||
b5e89ed5 | 451 | /** |
1da177e4 LT |
452 | * Called whenever a process performs an ioctl on /dev/drm. |
453 | * | |
454 | * \param inode device inode. | |
6c340eac | 455 | * \param file_priv DRM file private. |
1da177e4 LT |
456 | * \param cmd command. |
457 | * \param arg user argument. | |
458 | * \return zero on success or negative number on failure. | |
459 | * | |
460 | * Looks up the ioctl function in the ::ioctls table, checking for root | |
461 | * previleges if so required, and dispatches to the respective function. | |
462 | */ | |
b5e89ed5 DA |
463 | int drm_ioctl(struct inode *inode, struct file *filp, |
464 | unsigned int cmd, unsigned long arg) | |
1da177e4 | 465 | { |
6c340eac | 466 | struct drm_file *file_priv = filp->private_data; |
2c14f28b | 467 | struct drm_device *dev = file_priv->minor->dev; |
c153f45f | 468 | struct drm_ioctl_desc *ioctl; |
1da177e4 LT |
469 | drm_ioctl_t *func; |
470 | unsigned int nr = DRM_IOCTL_NR(cmd); | |
471 | int retcode = -EINVAL; | |
c153f45f | 472 | char *kdata = NULL; |
1da177e4 | 473 | |
b5e89ed5 DA |
474 | atomic_inc(&dev->ioctl_count); |
475 | atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); | |
6c340eac | 476 | ++file_priv->ioctl_count; |
1da177e4 | 477 | |
b5e89ed5 | 478 | DRM_DEBUG("pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%lx, auth=%d\n", |
ba25f9dc | 479 | task_pid_nr(current), cmd, nr, |
2c14f28b | 480 | (long)old_encode_dev(file_priv->minor->device), |
6c340eac | 481 | file_priv->authenticated); |
b5e89ed5 | 482 | |
0515b93c | 483 | if ((nr >= DRM_CORE_IOCTL_COUNT) && |
99da6d86 TH |
484 | ((nr < DRM_COMMAND_BASE) || (nr >= DRM_COMMAND_END))) |
485 | goto err_i1; | |
0515b93c DA |
486 | if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END) && |
487 | (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) | |
1da177e4 | 488 | ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE]; |
858a3685 | 489 | else if ((nr >= DRM_COMMAND_END) || (nr < DRM_COMMAND_BASE)) { |
99da6d86 | 490 | ioctl = &drm_ioctls[nr]; |
858a3685 DA |
491 | cmd = ioctl->cmd; |
492 | } else | |
1da177e4 | 493 | goto err_i1; |
b5e89ed5 | 494 | |
41ee2ff4 | 495 | /* Do not trust userspace, use our own definition */ |
1da177e4 LT |
496 | func = ioctl->func; |
497 | /* is there a local override? */ | |
498 | if ((nr == DRM_IOCTL_NR(DRM_IOCTL_DMA)) && dev->driver->dma_ioctl) | |
499 | func = dev->driver->dma_ioctl; | |
b5e89ed5 DA |
500 | |
501 | if (!func) { | |
502 | DRM_DEBUG("no function\n"); | |
1da177e4 | 503 | retcode = -EINVAL; |
a7a2cc31 | 504 | } else if (((ioctl->flags & DRM_ROOT_ONLY) && !capable(CAP_SYS_ADMIN)) || |
6c340eac EA |
505 | ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) || |
506 | ((ioctl->flags & DRM_MASTER) && !file_priv->master)) { | |
1da177e4 LT |
507 | retcode = -EACCES; |
508 | } else { | |
c153f45f EA |
509 | if (cmd & (IOC_IN | IOC_OUT)) { |
510 | kdata = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL); | |
9d5b3ffc DA |
511 | if (!kdata) { |
512 | retcode = -ENOMEM; | |
513 | goto err_i1; | |
514 | } | |
c153f45f EA |
515 | } |
516 | ||
517 | if (cmd & IOC_IN) { | |
518 | if (copy_from_user(kdata, (void __user *)arg, | |
519 | _IOC_SIZE(cmd)) != 0) { | |
9d5b3ffc | 520 | retcode = -EFAULT; |
c153f45f EA |
521 | goto err_i1; |
522 | } | |
523 | } | |
524 | retcode = func(dev, kdata, file_priv); | |
525 | ||
9d5b3ffc | 526 | if ((retcode == 0) && (cmd & IOC_OUT)) { |
c153f45f EA |
527 | if (copy_to_user((void __user *)arg, kdata, |
528 | _IOC_SIZE(cmd)) != 0) | |
9d5b3ffc | 529 | retcode = -EFAULT; |
c153f45f | 530 | } |
1da177e4 | 531 | } |
b5e89ed5 DA |
532 | |
533 | err_i1: | |
c153f45f EA |
534 | if (kdata) |
535 | kfree(kdata); | |
b5e89ed5 DA |
536 | atomic_dec(&dev->ioctl_count); |
537 | if (retcode) | |
538 | DRM_DEBUG("ret = %x\n", retcode); | |
1da177e4 LT |
539 | return retcode; |
540 | } | |
1da177e4 | 541 | |
b5e89ed5 | 542 | EXPORT_SYMBOL(drm_ioctl); |
da509d7a DA |
543 | |
544 | drm_local_map_t *drm_getsarea(struct drm_device *dev) | |
545 | { | |
55910517 | 546 | struct drm_map_list *entry; |
da509d7a | 547 | |
6f710105 | 548 | list_for_each_entry(entry, &dev->maplist, head) { |
da509d7a DA |
549 | if (entry->map && entry->map->type == _DRM_SHM && |
550 | (entry->map->flags & _DRM_CONTAINS_LOCK)) { | |
551 | return entry->map; | |
552 | } | |
553 | } | |
554 | return NULL; | |
555 | } | |
556 | EXPORT_SYMBOL(drm_getsarea); |