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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 | ||
7c1c2871 DA |
77 | DRM_IOCTL_DEF(DRM_IOCTL_SET_MASTER, drm_setmaster_ioctl, DRM_ROOT_ONLY), |
78 | DRM_IOCTL_DEF(DRM_IOCTL_DROP_MASTER, drm_dropmaster_ioctl, DRM_ROOT_ONLY), | |
79 | ||
c153f45f EA |
80 | DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY), |
81 | DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
82 | DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
83 | DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH), | |
84 | DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
85 | DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
86 | DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH), | |
87 | ||
88 | DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
89 | DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
90 | ||
91 | DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH), | |
92 | DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH), | |
93 | ||
94 | DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH), | |
95 | ||
96 | DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
97 | DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
98 | DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH), | |
99 | DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH), | |
100 | DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH), | |
1da177e4 | 101 | /* The DRM_IOCTL_DMA ioctl should be defined by the driver. */ |
c153f45f | 102 | DRM_IOCTL_DEF(DRM_IOCTL_DMA, NULL, DRM_AUTH), |
1da177e4 | 103 | |
c153f45f | 104 | DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
1da177e4 LT |
105 | |
106 | #if __OS_HAS_AGP | |
c153f45f EA |
107 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
108 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
109 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
110 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH), | |
111 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
112 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
113 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
114 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
1da177e4 LT |
115 | #endif |
116 | ||
c153f45f EA |
117 | DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
118 | DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
1da177e4 | 119 | |
c153f45f | 120 | DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, 0), |
bea5679f | 121 | |
0a3e67a4 JB |
122 | DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0), |
123 | ||
c153f45f | 124 | DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_update_drawable_info, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
673a394b EA |
125 | |
126 | DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, 0), | |
127 | DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK, drm_gem_flink_ioctl, DRM_AUTH), | |
128 | DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH), | |
1da177e4 LT |
129 | }; |
130 | ||
0515b93c | 131 | #define DRM_CORE_IOCTL_COUNT ARRAY_SIZE( drm_ioctls ) |
1da177e4 LT |
132 | |
133 | /** | |
134 | * Take down the DRM device. | |
135 | * | |
136 | * \param dev DRM device structure. | |
137 | * | |
138 | * Frees every resource in \p dev. | |
139 | * | |
aff138ab | 140 | * \sa drm_device |
1da177e4 | 141 | */ |
84b1fd10 | 142 | int drm_lastclose(struct drm_device * dev) |
1da177e4 | 143 | { |
8fc2fdf4 | 144 | struct drm_vma_entry *vma, *vma_temp; |
1da177e4 LT |
145 | int i; |
146 | ||
b5e89ed5 | 147 | DRM_DEBUG("\n"); |
1da177e4 | 148 | |
22eae947 DA |
149 | if (dev->driver->lastclose) |
150 | dev->driver->lastclose(dev); | |
151 | DRM_DEBUG("driver lastclose completed\n"); | |
1da177e4 | 152 | |
b5e89ed5 DA |
153 | if (dev->irq_enabled) |
154 | drm_irq_uninstall(dev); | |
1da177e4 | 155 | |
30e2fb18 | 156 | mutex_lock(&dev->struct_mutex); |
d4e2cbe9 DA |
157 | |
158 | /* Free drawable information memory */ | |
159 | drm_drawable_free_all(dev); | |
b5e89ed5 | 160 | del_timer(&dev->timer); |
1da177e4 | 161 | |
b5e89ed5 | 162 | /* Clear AGP information */ |
1da177e4 | 163 | if (drm_core_has_AGP(dev) && dev->agp) { |
55910517 | 164 | struct drm_agp_mem *entry, *tempe; |
1da177e4 | 165 | |
b5e89ed5 DA |
166 | /* Remove AGP resources, but leave dev->agp |
167 | intact until drv_cleanup is called. */ | |
bd1b331f | 168 | list_for_each_entry_safe(entry, tempe, &dev->agp->memory, head) { |
b5e89ed5 DA |
169 | if (entry->bound) |
170 | drm_unbind_agp(entry->memory); | |
171 | drm_free_agp(entry->memory, entry->pages); | |
172 | drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS); | |
1da177e4 | 173 | } |
bd1b331f | 174 | INIT_LIST_HEAD(&dev->agp->memory); |
1da177e4 | 175 | |
7ab98401 | 176 | if (dev->agp->acquired) |
b5e89ed5 | 177 | drm_agp_release(dev); |
1da177e4 LT |
178 | |
179 | dev->agp->acquired = 0; | |
b5e89ed5 | 180 | dev->agp->enabled = 0; |
1da177e4 | 181 | } |
836cf046 DA |
182 | if (drm_core_check_feature(dev, DRIVER_SG) && dev->sg) { |
183 | drm_sg_cleanup(dev->sg); | |
184 | dev->sg = NULL; | |
185 | } | |
1da177e4 | 186 | |
b5e89ed5 | 187 | /* Clear vma list (only built for debugging) */ |
bd1b331f DA |
188 | list_for_each_entry_safe(vma, vma_temp, &dev->vmalist, head) { |
189 | list_del(&vma->head); | |
190 | drm_free(vma, sizeof(*vma), DRM_MEM_VMAS); | |
1da177e4 LT |
191 | } |
192 | ||
b5e89ed5 DA |
193 | if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE) && dev->queuelist) { |
194 | for (i = 0; i < dev->queue_count; i++) { | |
195 | if (dev->queuelist[i]) { | |
196 | drm_free(dev->queuelist[i], | |
197 | sizeof(*dev->queuelist[0]), | |
198 | DRM_MEM_QUEUES); | |
1da177e4 LT |
199 | dev->queuelist[i] = NULL; |
200 | } | |
201 | } | |
b5e89ed5 DA |
202 | drm_free(dev->queuelist, |
203 | dev->queue_slots * sizeof(*dev->queuelist), | |
204 | DRM_MEM_QUEUES); | |
1da177e4 LT |
205 | dev->queuelist = NULL; |
206 | } | |
207 | dev->queue_count = 0; | |
208 | ||
209 | if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) | |
b5e89ed5 | 210 | drm_dma_takedown(dev); |
1da177e4 | 211 | |
a2c0a97b | 212 | dev->dev_mapping = NULL; |
30e2fb18 | 213 | mutex_unlock(&dev->struct_mutex); |
1da177e4 | 214 | |
22eae947 | 215 | DRM_DEBUG("lastclose completed\n"); |
1da177e4 LT |
216 | return 0; |
217 | } | |
218 | ||
1da177e4 LT |
219 | /** |
220 | * Module initialization. Called via init_module at module load time, or via | |
221 | * linux/init/main.c (this is not currently supported). | |
222 | * | |
223 | * \return zero on success or a negative number on failure. | |
224 | * | |
225 | * Initializes an array of drm_device structures, and attempts to | |
226 | * initialize all available devices, using consecutive minors, registering the | |
227 | * stubs and initializing the AGP device. | |
b5e89ed5 | 228 | * |
1da177e4 LT |
229 | * Expands the \c DRIVER_PREINIT and \c DRIVER_POST_INIT macros before and |
230 | * after the initialization for driver customization. | |
231 | */ | |
b5e89ed5 | 232 | int drm_init(struct drm_driver *driver) |
1da177e4 LT |
233 | { |
234 | struct pci_dev *pdev = NULL; | |
235 | struct pci_device_id *pid; | |
236 | int i; | |
237 | ||
b5e89ed5 | 238 | DRM_DEBUG("\n"); |
1da177e4 | 239 | |
e7f7ab45 DA |
240 | INIT_LIST_HEAD(&driver->device_list); |
241 | ||
b5e89ed5 | 242 | for (i = 0; driver->pci_driver.id_table[i].vendor != 0; i++) { |
1da177e4 | 243 | pid = (struct pci_device_id *)&driver->pci_driver.id_table[i]; |
b5e89ed5 | 244 | |
afa21e05 DA |
245 | /* Loop around setting up a DRM device for each PCI device |
246 | * matching our ID and device class. If we had the internal | |
247 | * function that pci_get_subsys and pci_get_class used, we'd | |
248 | * be able to just pass pid in instead of doing a two-stage | |
249 | * thing. | |
250 | */ | |
b5e89ed5 | 251 | pdev = NULL; |
b5e89ed5 DA |
252 | while ((pdev = |
253 | pci_get_subsys(pid->vendor, pid->device, pid->subvendor, | |
254 | pid->subdevice, pdev)) != NULL) { | |
afa21e05 DA |
255 | if ((pdev->class & pid->class_mask) != pid->class) |
256 | continue; | |
257 | ||
1da177e4 LT |
258 | /* stealth mode requires a manual probe */ |
259 | pci_dev_get(pdev); | |
260 | drm_get_dev(pdev, pid, driver); | |
261 | } | |
262 | } | |
263 | return 0; | |
264 | } | |
b5e89ed5 | 265 | |
1da177e4 LT |
266 | EXPORT_SYMBOL(drm_init); |
267 | ||
268 | /** | |
269 | * Called via cleanup_module() at module unload time. | |
270 | * | |
22eae947 | 271 | * Cleans up all DRM device, calling drm_lastclose(). |
b5e89ed5 | 272 | * |
aff138ab | 273 | * \sa drm_init |
1da177e4 | 274 | */ |
84b1fd10 | 275 | static void drm_cleanup(struct drm_device * dev) |
1da177e4 | 276 | { |
a2c0a97b JB |
277 | struct drm_driver *driver = dev->driver; |
278 | ||
b5e89ed5 | 279 | DRM_DEBUG("\n"); |
1da177e4 LT |
280 | |
281 | if (!dev) { | |
282 | DRM_ERROR("cleanup called no dev\n"); | |
283 | return; | |
284 | } | |
285 | ||
52440211 KP |
286 | drm_vblank_cleanup(dev); |
287 | ||
22eae947 | 288 | drm_lastclose(dev); |
1da177e4 | 289 | |
1da177e4 LT |
290 | if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) && |
291 | dev->agp && dev->agp->agp_mtrr >= 0) { | |
292 | int retval; | |
b5e89ed5 DA |
293 | retval = mtrr_del(dev->agp->agp_mtrr, |
294 | dev->agp->agp_info.aper_base, | |
295 | dev->agp->agp_info.aper_size * 1024 * 1024); | |
296 | DRM_DEBUG("mtrr_del=%d\n", retval); | |
1da177e4 | 297 | } |
b5e89ed5 DA |
298 | |
299 | if (drm_core_has_AGP(dev) && dev->agp) { | |
300 | drm_free(dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS); | |
1da177e4 LT |
301 | dev->agp = NULL; |
302 | } | |
303 | ||
22eae947 DA |
304 | if (dev->driver->unload) |
305 | dev->driver->unload(dev); | |
b5e89ed5 | 306 | |
e3236a11 DA |
307 | drm_ht_remove(&dev->map_hash); |
308 | drm_ctxbitmap_cleanup(dev); | |
a2c0a97b JB |
309 | |
310 | if (driver->driver_features & DRIVER_GEM) | |
311 | drm_gem_destroy(dev); | |
e3236a11 | 312 | |
2c14f28b | 313 | drm_put_minor(&dev->primary); |
b5e89ed5 DA |
314 | if (drm_put_dev(dev)) |
315 | DRM_ERROR("Cannot unload module\n"); | |
1da177e4 LT |
316 | } |
317 | ||
2c14f28b DA |
318 | void drm_exit(struct drm_driver *driver) |
319 | { | |
e7f7ab45 | 320 | struct drm_device *dev, *tmp; |
b5e89ed5 | 321 | DRM_DEBUG("\n"); |
1da177e4 | 322 | |
e7f7ab45 DA |
323 | list_for_each_entry_safe(dev, tmp, &driver->device_list, driver_item) |
324 | drm_cleanup(dev); | |
2c14f28b | 325 | |
b5e89ed5 | 326 | DRM_INFO("Module unloaded\n"); |
1da177e4 | 327 | } |
b5e89ed5 | 328 | |
1da177e4 LT |
329 | EXPORT_SYMBOL(drm_exit); |
330 | ||
331 | /** File operations structure */ | |
2b8693c0 | 332 | static const struct file_operations drm_stub_fops = { |
1da177e4 | 333 | .owner = THIS_MODULE, |
b5e89ed5 | 334 | .open = drm_stub_open |
1da177e4 LT |
335 | }; |
336 | ||
337 | static int __init drm_core_init(void) | |
338 | { | |
339 | int ret = -ENOMEM; | |
b5e89ed5 | 340 | |
2c14f28b | 341 | idr_init(&drm_minors_idr); |
b5e89ed5 | 342 | |
1da177e4 LT |
343 | if (register_chrdev(DRM_MAJOR, "drm", &drm_stub_fops)) |
344 | goto err_p1; | |
b5e89ed5 | 345 | |
1da177e4 LT |
346 | drm_class = drm_sysfs_create(THIS_MODULE, "drm"); |
347 | if (IS_ERR(drm_class)) { | |
b5e89ed5 | 348 | printk(KERN_ERR "DRM: Error creating drm class.\n"); |
1da177e4 LT |
349 | ret = PTR_ERR(drm_class); |
350 | goto err_p2; | |
351 | } | |
352 | ||
66600221 | 353 | drm_proc_root = proc_mkdir("dri", NULL); |
1da177e4 LT |
354 | if (!drm_proc_root) { |
355 | DRM_ERROR("Cannot create /proc/dri\n"); | |
356 | ret = -1; | |
357 | goto err_p3; | |
358 | } | |
b5e89ed5 | 359 | |
3260f9fd DA |
360 | drm_mem_init(); |
361 | ||
b5e89ed5 DA |
362 | DRM_INFO("Initialized %s %d.%d.%d %s\n", |
363 | CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE); | |
1da177e4 | 364 | return 0; |
e8b962b6 JB |
365 | err_p3: |
366 | drm_sysfs_destroy(); | |
367 | err_p2: | |
1da177e4 | 368 | unregister_chrdev(DRM_MAJOR, "drm"); |
2c14f28b DA |
369 | |
370 | idr_destroy(&drm_minors_idr); | |
e8b962b6 | 371 | err_p1: |
1da177e4 LT |
372 | return ret; |
373 | } | |
374 | ||
b5e89ed5 | 375 | static void __exit drm_core_exit(void) |
1da177e4 LT |
376 | { |
377 | remove_proc_entry("dri", NULL); | |
e8b962b6 | 378 | drm_sysfs_destroy(); |
1da177e4 LT |
379 | |
380 | unregister_chrdev(DRM_MAJOR, "drm"); | |
381 | ||
2c14f28b | 382 | idr_destroy(&drm_minors_idr); |
1da177e4 LT |
383 | } |
384 | ||
b5e89ed5 DA |
385 | module_init(drm_core_init); |
386 | module_exit(drm_core_exit); | |
1da177e4 LT |
387 | |
388 | /** | |
389 | * Get version information | |
390 | * | |
391 | * \param inode device inode. | |
392 | * \param filp file pointer. | |
393 | * \param cmd command. | |
394 | * \param arg user argument, pointing to a drm_version structure. | |
395 | * \return zero on success or negative number on failure. | |
396 | * | |
397 | * Fills in the version information in \p arg. | |
398 | */ | |
c153f45f EA |
399 | static int drm_version(struct drm_device *dev, void *data, |
400 | struct drm_file *file_priv) | |
1da177e4 | 401 | { |
c153f45f | 402 | struct drm_version *version = data; |
22eae947 | 403 | int len; |
1da177e4 | 404 | |
c153f45f EA |
405 | version->version_major = dev->driver->major; |
406 | version->version_minor = dev->driver->minor; | |
407 | version->version_patchlevel = dev->driver->patchlevel; | |
408 | DRM_COPY(version->name, dev->driver->name); | |
409 | DRM_COPY(version->date, dev->driver->date); | |
410 | DRM_COPY(version->desc, dev->driver->desc); | |
b5e89ed5 | 411 | |
1da177e4 LT |
412 | return 0; |
413 | } | |
414 | ||
b5e89ed5 | 415 | /** |
1da177e4 LT |
416 | * Called whenever a process performs an ioctl on /dev/drm. |
417 | * | |
418 | * \param inode device inode. | |
6c340eac | 419 | * \param file_priv DRM file private. |
1da177e4 LT |
420 | * \param cmd command. |
421 | * \param arg user argument. | |
422 | * \return zero on success or negative number on failure. | |
423 | * | |
424 | * Looks up the ioctl function in the ::ioctls table, checking for root | |
425 | * previleges if so required, and dispatches to the respective function. | |
426 | */ | |
b5e89ed5 DA |
427 | int drm_ioctl(struct inode *inode, struct file *filp, |
428 | unsigned int cmd, unsigned long arg) | |
1da177e4 | 429 | { |
6c340eac | 430 | struct drm_file *file_priv = filp->private_data; |
2c14f28b | 431 | struct drm_device *dev = file_priv->minor->dev; |
c153f45f | 432 | struct drm_ioctl_desc *ioctl; |
1da177e4 LT |
433 | drm_ioctl_t *func; |
434 | unsigned int nr = DRM_IOCTL_NR(cmd); | |
435 | int retcode = -EINVAL; | |
c153f45f | 436 | char *kdata = NULL; |
1da177e4 | 437 | |
b5e89ed5 DA |
438 | atomic_inc(&dev->ioctl_count); |
439 | atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); | |
6c340eac | 440 | ++file_priv->ioctl_count; |
1da177e4 | 441 | |
b5e89ed5 | 442 | DRM_DEBUG("pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%lx, auth=%d\n", |
ba25f9dc | 443 | task_pid_nr(current), cmd, nr, |
2c14f28b | 444 | (long)old_encode_dev(file_priv->minor->device), |
6c340eac | 445 | file_priv->authenticated); |
b5e89ed5 | 446 | |
0515b93c | 447 | if ((nr >= DRM_CORE_IOCTL_COUNT) && |
99da6d86 TH |
448 | ((nr < DRM_COMMAND_BASE) || (nr >= DRM_COMMAND_END))) |
449 | goto err_i1; | |
0515b93c DA |
450 | if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END) && |
451 | (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) | |
1da177e4 | 452 | ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE]; |
858a3685 | 453 | else if ((nr >= DRM_COMMAND_END) || (nr < DRM_COMMAND_BASE)) { |
99da6d86 | 454 | ioctl = &drm_ioctls[nr]; |
858a3685 DA |
455 | cmd = ioctl->cmd; |
456 | } else | |
1da177e4 | 457 | goto err_i1; |
b5e89ed5 | 458 | |
41ee2ff4 | 459 | /* Do not trust userspace, use our own definition */ |
1da177e4 LT |
460 | func = ioctl->func; |
461 | /* is there a local override? */ | |
462 | if ((nr == DRM_IOCTL_NR(DRM_IOCTL_DMA)) && dev->driver->dma_ioctl) | |
463 | func = dev->driver->dma_ioctl; | |
b5e89ed5 DA |
464 | |
465 | if (!func) { | |
466 | DRM_DEBUG("no function\n"); | |
1da177e4 | 467 | retcode = -EINVAL; |
a7a2cc31 | 468 | } else if (((ioctl->flags & DRM_ROOT_ONLY) && !capable(CAP_SYS_ADMIN)) || |
6c340eac EA |
469 | ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) || |
470 | ((ioctl->flags & DRM_MASTER) && !file_priv->master)) { | |
1da177e4 LT |
471 | retcode = -EACCES; |
472 | } else { | |
c153f45f EA |
473 | if (cmd & (IOC_IN | IOC_OUT)) { |
474 | kdata = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL); | |
9d5b3ffc DA |
475 | if (!kdata) { |
476 | retcode = -ENOMEM; | |
477 | goto err_i1; | |
478 | } | |
c153f45f EA |
479 | } |
480 | ||
481 | if (cmd & IOC_IN) { | |
482 | if (copy_from_user(kdata, (void __user *)arg, | |
483 | _IOC_SIZE(cmd)) != 0) { | |
9d5b3ffc | 484 | retcode = -EFAULT; |
c153f45f EA |
485 | goto err_i1; |
486 | } | |
487 | } | |
488 | retcode = func(dev, kdata, file_priv); | |
489 | ||
9d5b3ffc | 490 | if ((retcode == 0) && (cmd & IOC_OUT)) { |
c153f45f EA |
491 | if (copy_to_user((void __user *)arg, kdata, |
492 | _IOC_SIZE(cmd)) != 0) | |
9d5b3ffc | 493 | retcode = -EFAULT; |
c153f45f | 494 | } |
1da177e4 | 495 | } |
b5e89ed5 DA |
496 | |
497 | err_i1: | |
c153f45f EA |
498 | if (kdata) |
499 | kfree(kdata); | |
b5e89ed5 DA |
500 | atomic_dec(&dev->ioctl_count); |
501 | if (retcode) | |
502 | DRM_DEBUG("ret = %x\n", retcode); | |
1da177e4 LT |
503 | return retcode; |
504 | } | |
1da177e4 | 505 | |
b5e89ed5 | 506 | EXPORT_SYMBOL(drm_ioctl); |
da509d7a DA |
507 | |
508 | drm_local_map_t *drm_getsarea(struct drm_device *dev) | |
509 | { | |
55910517 | 510 | struct drm_map_list *entry; |
da509d7a | 511 | |
6f710105 | 512 | list_for_each_entry(entry, &dev->maplist, head) { |
da509d7a DA |
513 | if (entry->map && entry->map->type == _DRM_SHM && |
514 | (entry->map->flags & _DRM_CONTAINS_LOCK)) { | |
515 | return entry->map; | |
516 | } | |
517 | } | |
518 | return NULL; | |
519 | } | |
520 | EXPORT_SYMBOL(drm_getsarea); |