Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /** |
2 | * \file drm_stub.h | |
3 | * Stub support | |
4 | * | |
5 | * \author Rickard E. (Rik) Faith <faith@valinux.com> | |
6 | */ | |
7 | ||
8 | /* | |
9 | * Created: Fri Jan 19 10:48:35 2001 by faith@acm.org | |
10 | * | |
11 | * Copyright 2001 VA Linux Systems, Inc., Sunnyvale, California. | |
12 | * All Rights Reserved. | |
13 | * | |
14 | * Permission is hereby granted, free of charge, to any person obtaining a | |
15 | * copy of this software and associated documentation files (the "Software"), | |
16 | * to deal in the Software without restriction, including without limitation | |
17 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
18 | * and/or sell copies of the Software, and to permit persons to whom the | |
19 | * Software is furnished to do so, subject to the following conditions: | |
20 | * | |
21 | * The above copyright notice and this permission notice (including the next | |
22 | * paragraph) shall be included in all copies or substantial portions of the | |
23 | * Software. | |
24 | * | |
25 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
26 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
27 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
28 | * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
29 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
30 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | |
31 | * DEALINGS IN THE SOFTWARE. | |
32 | */ | |
33 | ||
34 | #include <linux/module.h> | |
35 | #include <linux/moduleparam.h> | |
5a0e3ad6 | 36 | #include <linux/slab.h> |
760285e7 DH |
37 | #include <drm/drmP.h> |
38 | #include <drm/drm_core.h> | |
1da177e4 | 39 | |
b5e89ed5 | 40 | unsigned int drm_debug = 0; /* 1 to enable debug output */ |
1da177e4 LT |
41 | EXPORT_SYMBOL(drm_debug); |
42 | ||
1793126f DH |
43 | unsigned int drm_rnodes = 0; /* 1 to enable experimental render nodes API */ |
44 | EXPORT_SYMBOL(drm_rnodes); | |
45 | ||
27641c3f MK |
46 | unsigned int drm_vblank_offdelay = 5000; /* Default to 5000 msecs. */ |
47 | EXPORT_SYMBOL(drm_vblank_offdelay); | |
48 | ||
49 | unsigned int drm_timestamp_precision = 20; /* Default to 20 usecs. */ | |
50 | EXPORT_SYMBOL(drm_timestamp_precision); | |
51 | ||
c61eef72 ID |
52 | /* |
53 | * Default to use monotonic timestamps for wait-for-vblank and page-flip | |
54 | * complete events. | |
55 | */ | |
56 | unsigned int drm_timestamp_monotonic = 1; | |
57 | ||
b5e89ed5 DA |
58 | MODULE_AUTHOR(CORE_AUTHOR); |
59 | MODULE_DESCRIPTION(CORE_DESC); | |
1da177e4 | 60 | MODULE_LICENSE("GPL and additional rights"); |
1da177e4 | 61 | MODULE_PARM_DESC(debug, "Enable debug output"); |
1793126f | 62 | MODULE_PARM_DESC(rnodes, "Enable experimental render nodes API"); |
27641c3f MK |
63 | MODULE_PARM_DESC(vblankoffdelay, "Delay until vblank irq auto-disable [msecs]"); |
64 | MODULE_PARM_DESC(timestamp_precision_usec, "Max. error on timestamps [usecs]"); | |
c61eef72 | 65 | MODULE_PARM_DESC(timestamp_monotonic, "Use monotonic timestamps"); |
1da177e4 | 66 | |
c0758146 | 67 | module_param_named(debug, drm_debug, int, 0600); |
1793126f | 68 | module_param_named(rnodes, drm_rnodes, int, 0600); |
27641c3f MK |
69 | module_param_named(vblankoffdelay, drm_vblank_offdelay, int, 0600); |
70 | module_param_named(timestamp_precision_usec, drm_timestamp_precision, int, 0600); | |
c61eef72 | 71 | module_param_named(timestamp_monotonic, drm_timestamp_monotonic, int, 0600); |
1da177e4 | 72 | |
2c14f28b DA |
73 | struct idr drm_minors_idr; |
74 | ||
0650fd58 | 75 | struct class *drm_class; |
955b12de | 76 | struct dentry *drm_debugfs_root; |
5ad3d883 JP |
77 | |
78 | int drm_err(const char *func, const char *format, ...) | |
79 | { | |
80 | struct va_format vaf; | |
81 | va_list args; | |
82 | int r; | |
83 | ||
84 | va_start(args, format); | |
85 | ||
86 | vaf.fmt = format; | |
87 | vaf.va = &args; | |
88 | ||
89 | r = printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* %pV", func, &vaf); | |
90 | ||
91 | va_end(args); | |
92 | ||
93 | return r; | |
94 | } | |
95 | EXPORT_SYMBOL(drm_err); | |
96 | ||
4fefcb27 | 97 | void drm_ut_debug_printk(unsigned int request_level, |
98 | const char *prefix, | |
99 | const char *function_name, | |
100 | const char *format, ...) | |
101 | { | |
102 | va_list args; | |
1da177e4 | 103 | |
4fefcb27 | 104 | if (drm_debug & request_level) { |
105 | if (function_name) | |
106 | printk(KERN_DEBUG "[%s:%s], ", prefix, function_name); | |
107 | va_start(args, format); | |
108 | vprintk(format, args); | |
109 | va_end(args); | |
110 | } | |
111 | } | |
112 | EXPORT_SYMBOL(drm_ut_debug_printk); | |
5ad3d883 | 113 | |
2c14f28b DA |
114 | static int drm_minor_get_id(struct drm_device *dev, int type) |
115 | { | |
2c14f28b DA |
116 | int ret; |
117 | int base = 0, limit = 63; | |
118 | ||
f453ba04 | 119 | if (type == DRM_MINOR_CONTROL) { |
24f40032 KH |
120 | base += 64; |
121 | limit = base + 63; | |
122 | } else if (type == DRM_MINOR_RENDER) { | |
123 | base += 128; | |
124 | limit = base + 63; | |
125 | } | |
f453ba04 | 126 | |
2c14f28b | 127 | mutex_lock(&dev->struct_mutex); |
2e928815 | 128 | ret = idr_alloc(&drm_minors_idr, NULL, base, limit, GFP_KERNEL); |
2c14f28b | 129 | mutex_unlock(&dev->struct_mutex); |
2e928815 TH |
130 | |
131 | return ret == -ENOSPC ? -EINVAL : ret; | |
2c14f28b DA |
132 | } |
133 | ||
7c1c2871 DA |
134 | struct drm_master *drm_master_create(struct drm_minor *minor) |
135 | { | |
136 | struct drm_master *master; | |
137 | ||
9a298b2a | 138 | master = kzalloc(sizeof(*master), GFP_KERNEL); |
7c1c2871 DA |
139 | if (!master) |
140 | return NULL; | |
141 | ||
142 | kref_init(&master->refcount); | |
143 | spin_lock_init(&master->lock.spinlock); | |
144 | init_waitqueue_head(&master->lock.lock_queue); | |
145 | drm_ht_create(&master->magiclist, DRM_MAGIC_HASH_ORDER); | |
146 | INIT_LIST_HEAD(&master->magicfree); | |
147 | master->minor = minor; | |
148 | ||
149 | list_add_tail(&master->head, &minor->master_list); | |
150 | ||
151 | return master; | |
152 | } | |
153 | ||
154 | struct drm_master *drm_master_get(struct drm_master *master) | |
155 | { | |
156 | kref_get(&master->refcount); | |
157 | return master; | |
158 | } | |
85bb0c37 | 159 | EXPORT_SYMBOL(drm_master_get); |
7c1c2871 DA |
160 | |
161 | static void drm_master_destroy(struct kref *kref) | |
162 | { | |
163 | struct drm_master *master = container_of(kref, struct drm_master, refcount); | |
164 | struct drm_magic_entry *pt, *next; | |
165 | struct drm_device *dev = master->minor->dev; | |
c1ff85d9 | 166 | struct drm_map_list *r_list, *list_temp; |
7c1c2871 DA |
167 | |
168 | list_del(&master->head); | |
169 | ||
170 | if (dev->driver->master_destroy) | |
171 | dev->driver->master_destroy(dev, master); | |
172 | ||
c1ff85d9 DA |
173 | list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) { |
174 | if (r_list->master == master) { | |
175 | drm_rmmap_locked(dev, r_list->map); | |
176 | r_list = NULL; | |
177 | } | |
178 | } | |
179 | ||
7c1c2871 | 180 | if (master->unique) { |
9a298b2a | 181 | kfree(master->unique); |
7c1c2871 DA |
182 | master->unique = NULL; |
183 | master->unique_len = 0; | |
184 | } | |
185 | ||
6e35023f CW |
186 | kfree(dev->devname); |
187 | dev->devname = NULL; | |
188 | ||
7c1c2871 DA |
189 | list_for_each_entry_safe(pt, next, &master->magicfree, head) { |
190 | list_del(&pt->head); | |
191 | drm_ht_remove_item(&master->magiclist, &pt->hash_item); | |
9a298b2a | 192 | kfree(pt); |
7c1c2871 DA |
193 | } |
194 | ||
195 | drm_ht_remove(&master->magiclist); | |
196 | ||
9a298b2a | 197 | kfree(master); |
7c1c2871 DA |
198 | } |
199 | ||
200 | void drm_master_put(struct drm_master **master) | |
201 | { | |
202 | kref_put(&(*master)->refcount, drm_master_destroy); | |
203 | *master = NULL; | |
204 | } | |
85bb0c37 | 205 | EXPORT_SYMBOL(drm_master_put); |
7c1c2871 DA |
206 | |
207 | int drm_setmaster_ioctl(struct drm_device *dev, void *data, | |
208 | struct drm_file *file_priv) | |
209 | { | |
53ef1600 | 210 | int ret = 0; |
862302ff | 211 | |
6b008426 JB |
212 | if (file_priv->is_master) |
213 | return 0; | |
214 | ||
7c1c2871 DA |
215 | if (file_priv->minor->master && file_priv->minor->master != file_priv->master) |
216 | return -EINVAL; | |
217 | ||
218 | if (!file_priv->master) | |
219 | return -EINVAL; | |
220 | ||
08bec5b4 DH |
221 | if (file_priv->minor->master) |
222 | return -EINVAL; | |
223 | ||
224 | mutex_lock(&dev->struct_mutex); | |
225 | file_priv->minor->master = drm_master_get(file_priv->master); | |
226 | file_priv->is_master = 1; | |
227 | if (dev->driver->master_set) { | |
228 | ret = dev->driver->master_set(dev, file_priv, false); | |
229 | if (unlikely(ret != 0)) { | |
230 | file_priv->is_master = 0; | |
231 | drm_master_put(&file_priv->minor->master); | |
862302ff | 232 | } |
7c1c2871 | 233 | } |
08bec5b4 | 234 | mutex_unlock(&dev->struct_mutex); |
7c1c2871 | 235 | |
53ef1600 | 236 | return ret; |
7c1c2871 DA |
237 | } |
238 | ||
239 | int drm_dropmaster_ioctl(struct drm_device *dev, void *data, | |
240 | struct drm_file *file_priv) | |
241 | { | |
6b008426 | 242 | if (!file_priv->is_master) |
7c1c2871 | 243 | return -EINVAL; |
6b008426 | 244 | |
07f1c7a7 DA |
245 | if (!file_priv->minor->master) |
246 | return -EINVAL; | |
247 | ||
7c1c2871 | 248 | mutex_lock(&dev->struct_mutex); |
862302ff TH |
249 | if (dev->driver->master_drop) |
250 | dev->driver->master_drop(dev, file_priv, false); | |
7c1c2871 | 251 | drm_master_put(&file_priv->minor->master); |
6b008426 | 252 | file_priv->is_master = 0; |
7c1c2871 DA |
253 | mutex_unlock(&dev->struct_mutex); |
254 | return 0; | |
255 | } | |
256 | ||
1da177e4 | 257 | /** |
a99ee459 DH |
258 | * drm_get_minor - Allocate and register new DRM minor |
259 | * @dev: DRM device | |
260 | * @minor: Pointer to where new minor is stored | |
261 | * @type: Type of minor | |
1da177e4 | 262 | * |
a99ee459 DH |
263 | * Allocate a new minor of the given type and register it. A pointer to the new |
264 | * minor is returned in @minor. | |
265 | * Caller must hold the global DRM mutex. | |
1da177e4 | 266 | * |
a99ee459 DH |
267 | * RETURNS: |
268 | * 0 on success, negative error code on failure. | |
1da177e4 | 269 | */ |
a99ee459 DH |
270 | static int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, |
271 | int type) | |
1da177e4 | 272 | { |
2c14f28b | 273 | struct drm_minor *new_minor; |
1da177e4 | 274 | int ret; |
2c14f28b | 275 | int minor_id; |
1da177e4 LT |
276 | |
277 | DRM_DEBUG("\n"); | |
278 | ||
2c14f28b DA |
279 | minor_id = drm_minor_get_id(dev, type); |
280 | if (minor_id < 0) | |
281 | return minor_id; | |
282 | ||
283 | new_minor = kzalloc(sizeof(struct drm_minor), GFP_KERNEL); | |
284 | if (!new_minor) { | |
285 | ret = -ENOMEM; | |
286 | goto err_idr; | |
287 | } | |
288 | ||
289 | new_minor->type = type; | |
290 | new_minor->device = MKDEV(DRM_MAJOR, minor_id); | |
291 | new_minor->dev = dev; | |
292 | new_minor->index = minor_id; | |
7c1c2871 | 293 | INIT_LIST_HEAD(&new_minor->master_list); |
2c14f28b DA |
294 | |
295 | idr_replace(&drm_minors_idr, new_minor, minor_id); | |
296 | ||
955b12de BG |
297 | #if defined(CONFIG_DEBUG_FS) |
298 | ret = drm_debugfs_init(new_minor, minor_id, drm_debugfs_root); | |
299 | if (ret) { | |
156f5a78 | 300 | DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n"); |
cb6458f9 | 301 | goto err_mem; |
955b12de BG |
302 | } |
303 | #endif | |
2c14f28b DA |
304 | |
305 | ret = drm_sysfs_device_add(new_minor); | |
306 | if (ret) { | |
307 | printk(KERN_ERR | |
308 | "DRM: Error sysfs_device_add.\n"); | |
cb6458f9 | 309 | goto err_debugfs; |
1da177e4 | 310 | } |
2c14f28b DA |
311 | *minor = new_minor; |
312 | ||
313 | DRM_DEBUG("new minor assigned %d\n", minor_id); | |
314 | return 0; | |
315 | ||
316 | ||
cb6458f9 DV |
317 | err_debugfs: |
318 | #if defined(CONFIG_DEBUG_FS) | |
319 | drm_debugfs_cleanup(new_minor); | |
2c14f28b | 320 | err_mem: |
cb6458f9 | 321 | #endif |
2c14f28b DA |
322 | kfree(new_minor); |
323 | err_idr: | |
324 | idr_remove(&drm_minors_idr, minor_id); | |
325 | *minor = NULL; | |
1da177e4 LT |
326 | return ret; |
327 | } | |
b5e89ed5 | 328 | |
1da177e4 | 329 | /** |
f73aca50 DH |
330 | * drm_unplug_minor - Unplug DRM minor |
331 | * @minor: Minor to unplug | |
1da177e4 | 332 | * |
f73aca50 DH |
333 | * Unplugs the given DRM minor but keeps the object. So after this returns, |
334 | * minor->dev is still valid so existing open-files can still access it to get | |
335 | * device information from their drm_file ojects. | |
336 | * If the minor is already unplugged or if @minor is NULL, nothing is done. | |
337 | * The global DRM mutex must be held by the caller. | |
338 | */ | |
339 | static void drm_unplug_minor(struct drm_minor *minor) | |
340 | { | |
a3483353 | 341 | if (!minor || !minor->kdev) |
f73aca50 DH |
342 | return; |
343 | ||
865fb47f DH |
344 | #if defined(CONFIG_DEBUG_FS) |
345 | drm_debugfs_cleanup(minor); | |
346 | #endif | |
347 | ||
f73aca50 | 348 | drm_sysfs_device_remove(minor); |
f67e946b | 349 | idr_remove(&drm_minors_idr, minor->index); |
f73aca50 DH |
350 | } |
351 | ||
352 | /** | |
353 | * drm_put_minor - Destroy DRM minor | |
4ac387f5 | 354 | * @minor: Minor to destroy |
f73aca50 | 355 | * |
4ac387f5 DH |
356 | * This calls drm_unplug_minor() on the given minor and then frees it. Nothing |
357 | * is done if @minor is NULL. It is fine to call this on already unplugged | |
358 | * minors. | |
f73aca50 | 359 | * The global DRM mutex must be held by the caller. |
1da177e4 | 360 | */ |
4ac387f5 | 361 | static void drm_put_minor(struct drm_minor *minor) |
1da177e4 | 362 | { |
4ac387f5 DH |
363 | if (!minor) |
364 | return; | |
673a394b | 365 | |
2c14f28b | 366 | DRM_DEBUG("release secondary minor %d\n", minor->index); |
b5e89ed5 | 367 | |
f73aca50 | 368 | drm_unplug_minor(minor); |
2c14f28b | 369 | kfree(minor); |
1da177e4 | 370 | } |
112b715e KH |
371 | |
372 | /** | |
373 | * Called via drm_exit() at module unload time or when pci device is | |
374 | * unplugged. | |
375 | * | |
376 | * Cleans up all DRM device, calling drm_lastclose(). | |
377 | * | |
112b715e KH |
378 | */ |
379 | void drm_put_dev(struct drm_device *dev) | |
380 | { | |
112b715e KH |
381 | DRM_DEBUG("\n"); |
382 | ||
383 | if (!dev) { | |
384 | DRM_ERROR("cleanup called no dev\n"); | |
385 | return; | |
386 | } | |
387 | ||
c3a49737 | 388 | drm_dev_unregister(dev); |
0dc8fe59 | 389 | drm_dev_free(dev); |
112b715e KH |
390 | } |
391 | EXPORT_SYMBOL(drm_put_dev); | |
2c07a21d DA |
392 | |
393 | void drm_unplug_dev(struct drm_device *dev) | |
394 | { | |
395 | /* for a USB device */ | |
396 | if (drm_core_check_feature(dev, DRIVER_MODESET)) | |
397 | drm_unplug_minor(dev->control); | |
1793126f DH |
398 | if (dev->render) |
399 | drm_unplug_minor(dev->render); | |
2c07a21d DA |
400 | drm_unplug_minor(dev->primary); |
401 | ||
402 | mutex_lock(&drm_global_mutex); | |
403 | ||
404 | drm_device_set_unplugged(dev); | |
405 | ||
406 | if (dev->open_count == 0) { | |
407 | drm_put_dev(dev); | |
408 | } | |
409 | mutex_unlock(&drm_global_mutex); | |
410 | } | |
411 | EXPORT_SYMBOL(drm_unplug_dev); | |
1bb72532 DH |
412 | |
413 | /** | |
414 | * drm_dev_alloc - Allocate new drm device | |
415 | * @driver: DRM driver to allocate device for | |
416 | * @parent: Parent device object | |
417 | * | |
418 | * Allocate and initialize a new DRM device. No device registration is done. | |
c22f0ace DH |
419 | * Call drm_dev_register() to advertice the device to user space and register it |
420 | * with other core subsystems. | |
1bb72532 DH |
421 | * |
422 | * RETURNS: | |
423 | * Pointer to new DRM device, or NULL if out of memory. | |
424 | */ | |
425 | struct drm_device *drm_dev_alloc(struct drm_driver *driver, | |
426 | struct device *parent) | |
427 | { | |
428 | struct drm_device *dev; | |
429 | int ret; | |
430 | ||
431 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); | |
432 | if (!dev) | |
433 | return NULL; | |
434 | ||
435 | dev->dev = parent; | |
436 | dev->driver = driver; | |
437 | ||
438 | INIT_LIST_HEAD(&dev->filelist); | |
439 | INIT_LIST_HEAD(&dev->ctxlist); | |
440 | INIT_LIST_HEAD(&dev->vmalist); | |
441 | INIT_LIST_HEAD(&dev->maplist); | |
442 | INIT_LIST_HEAD(&dev->vblank_event_list); | |
443 | ||
444 | spin_lock_init(&dev->count_lock); | |
445 | spin_lock_init(&dev->event_lock); | |
446 | mutex_init(&dev->struct_mutex); | |
447 | mutex_init(&dev->ctxlist_mutex); | |
448 | ||
1bb72532 DH |
449 | if (drm_ht_create(&dev->map_hash, 12)) |
450 | goto err_free; | |
451 | ||
452 | ret = drm_ctxbitmap_init(dev); | |
453 | if (ret) { | |
454 | DRM_ERROR("Cannot allocate memory for context bitmap.\n"); | |
455 | goto err_ht; | |
456 | } | |
457 | ||
458 | if (driver->driver_features & DRIVER_GEM) { | |
459 | ret = drm_gem_init(dev); | |
460 | if (ret) { | |
461 | DRM_ERROR("Cannot initialize graphics execution manager (GEM)\n"); | |
462 | goto err_ctxbitmap; | |
463 | } | |
464 | } | |
465 | ||
466 | return dev; | |
467 | ||
468 | err_ctxbitmap: | |
469 | drm_ctxbitmap_cleanup(dev); | |
470 | err_ht: | |
471 | drm_ht_remove(&dev->map_hash); | |
472 | err_free: | |
473 | kfree(dev); | |
474 | return NULL; | |
475 | } | |
476 | EXPORT_SYMBOL(drm_dev_alloc); | |
c22f0ace | 477 | |
0dc8fe59 DH |
478 | /** |
479 | * drm_dev_free - Free DRM device | |
480 | * @dev: DRM device to free | |
481 | * | |
482 | * Free a DRM device that has previously been allocated via drm_dev_alloc(). | |
483 | * You must not use kfree() instead or you will leak memory. | |
484 | * | |
485 | * This must not be called once the device got registered. Use drm_put_dev() | |
486 | * instead, which then calls drm_dev_free(). | |
487 | */ | |
488 | void drm_dev_free(struct drm_device *dev) | |
489 | { | |
8f6599da DH |
490 | drm_put_minor(dev->control); |
491 | drm_put_minor(dev->render); | |
492 | drm_put_minor(dev->primary); | |
493 | ||
0dc8fe59 DH |
494 | if (dev->driver->driver_features & DRIVER_GEM) |
495 | drm_gem_destroy(dev); | |
496 | ||
497 | drm_ctxbitmap_cleanup(dev); | |
498 | drm_ht_remove(&dev->map_hash); | |
499 | ||
500 | kfree(dev->devname); | |
501 | kfree(dev); | |
502 | } | |
503 | EXPORT_SYMBOL(drm_dev_free); | |
504 | ||
c22f0ace DH |
505 | /** |
506 | * drm_dev_register - Register DRM device | |
507 | * @dev: Device to register | |
508 | * | |
509 | * Register the DRM device @dev with the system, advertise device to user-space | |
510 | * and start normal device operation. @dev must be allocated via drm_dev_alloc() | |
511 | * previously. | |
512 | * | |
513 | * Never call this twice on any device! | |
514 | * | |
515 | * RETURNS: | |
516 | * 0 on success, negative error code on failure. | |
517 | */ | |
518 | int drm_dev_register(struct drm_device *dev, unsigned long flags) | |
519 | { | |
520 | int ret; | |
521 | ||
522 | mutex_lock(&drm_global_mutex); | |
523 | ||
524 | if (dev->driver->bus->agp_init) { | |
525 | ret = dev->driver->bus->agp_init(dev); | |
526 | if (ret) | |
527 | goto out_unlock; | |
528 | } | |
529 | ||
530 | if (drm_core_check_feature(dev, DRIVER_MODESET)) { | |
531 | ret = drm_get_minor(dev, &dev->control, DRM_MINOR_CONTROL); | |
532 | if (ret) | |
533 | goto err_agp; | |
534 | } | |
535 | ||
536 | if (drm_core_check_feature(dev, DRIVER_RENDER) && drm_rnodes) { | |
537 | ret = drm_get_minor(dev, &dev->render, DRM_MINOR_RENDER); | |
538 | if (ret) | |
539 | goto err_control_node; | |
540 | } | |
541 | ||
542 | ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY); | |
543 | if (ret) | |
544 | goto err_render_node; | |
545 | ||
546 | if (dev->driver->load) { | |
547 | ret = dev->driver->load(dev, flags); | |
548 | if (ret) | |
549 | goto err_primary_node; | |
550 | } | |
551 | ||
552 | /* setup grouping for legacy outputs */ | |
553 | if (drm_core_check_feature(dev, DRIVER_MODESET)) { | |
554 | ret = drm_mode_group_init_legacy_group(dev, | |
555 | &dev->primary->mode_group); | |
556 | if (ret) | |
557 | goto err_unload; | |
558 | } | |
559 | ||
560 | list_add_tail(&dev->driver_item, &dev->driver->device_list); | |
561 | ||
562 | ret = 0; | |
563 | goto out_unlock; | |
564 | ||
565 | err_unload: | |
566 | if (dev->driver->unload) | |
567 | dev->driver->unload(dev); | |
568 | err_primary_node: | |
0f58411d | 569 | drm_unplug_minor(dev->primary); |
c22f0ace | 570 | err_render_node: |
0f58411d | 571 | drm_unplug_minor(dev->render); |
c22f0ace | 572 | err_control_node: |
0f58411d | 573 | drm_unplug_minor(dev->control); |
c22f0ace DH |
574 | err_agp: |
575 | if (dev->driver->bus->agp_destroy) | |
576 | dev->driver->bus->agp_destroy(dev); | |
577 | out_unlock: | |
578 | mutex_unlock(&drm_global_mutex); | |
579 | return ret; | |
580 | } | |
581 | EXPORT_SYMBOL(drm_dev_register); | |
c3a49737 DH |
582 | |
583 | /** | |
584 | * drm_dev_unregister - Unregister DRM device | |
585 | * @dev: Device to unregister | |
586 | * | |
587 | * Unregister the DRM device from the system. This does the reverse of | |
588 | * drm_dev_register() but does not deallocate the device. The caller must call | |
589 | * drm_dev_free() to free all resources. | |
590 | */ | |
591 | void drm_dev_unregister(struct drm_device *dev) | |
592 | { | |
593 | struct drm_map_list *r_list, *list_temp; | |
594 | ||
595 | drm_lastclose(dev); | |
596 | ||
597 | if (dev->driver->unload) | |
598 | dev->driver->unload(dev); | |
599 | ||
600 | if (dev->driver->bus->agp_destroy) | |
601 | dev->driver->bus->agp_destroy(dev); | |
602 | ||
603 | drm_vblank_cleanup(dev); | |
604 | ||
605 | list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) | |
606 | drm_rmmap(dev, r_list->map); | |
607 | ||
8f6599da DH |
608 | drm_unplug_minor(dev->control); |
609 | drm_unplug_minor(dev->render); | |
610 | drm_unplug_minor(dev->primary); | |
c3a49737 DH |
611 | |
612 | list_del(&dev->driver_item); | |
613 | } | |
614 | EXPORT_SYMBOL(drm_dev_unregister); |