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34#include <linux/module.h>
35#include <linux/moduleparam.h>
36#include <linux/slab.h>
37#include <drm/drmP.h>
38#include <drm/drm_core.h>
39
40unsigned int drm_debug = 0;
41EXPORT_SYMBOL(drm_debug);
42
43unsigned int drm_vblank_offdelay = 5000;
44EXPORT_SYMBOL(drm_vblank_offdelay);
45
46unsigned int drm_timestamp_precision = 20;
47EXPORT_SYMBOL(drm_timestamp_precision);
48
49
50
51
52
53unsigned int drm_timestamp_monotonic = 1;
54
55MODULE_AUTHOR(CORE_AUTHOR);
56MODULE_DESCRIPTION(CORE_DESC);
57MODULE_LICENSE("GPL and additional rights");
58MODULE_PARM_DESC(debug, "Enable debug output");
59MODULE_PARM_DESC(vblankoffdelay, "Delay until vblank irq auto-disable [msecs]");
60MODULE_PARM_DESC(timestamp_precision_usec, "Max. error on timestamps [usecs]");
61MODULE_PARM_DESC(timestamp_monotonic, "Use monotonic timestamps");
62
63module_param_named(debug, drm_debug, int, 0600);
64module_param_named(vblankoffdelay, drm_vblank_offdelay, int, 0600);
65module_param_named(timestamp_precision_usec, drm_timestamp_precision, int, 0600);
66module_param_named(timestamp_monotonic, drm_timestamp_monotonic, int, 0600);
67
68struct idr drm_minors_idr;
69
70struct class *drm_class;
71struct proc_dir_entry *drm_proc_root;
72struct dentry *drm_debugfs_root;
73
74int drm_err(const char *func, const char *format, ...)
75{
76 struct va_format vaf;
77 va_list args;
78 int r;
79
80 va_start(args, format);
81
82 vaf.fmt = format;
83 vaf.va = &args;
84
85 r = printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* %pV", func, &vaf);
86
87 va_end(args);
88
89 return r;
90}
91EXPORT_SYMBOL(drm_err);
92
93void drm_ut_debug_printk(unsigned int request_level,
94 const char *prefix,
95 const char *function_name,
96 const char *format, ...)
97{
98 va_list args;
99
100 if (drm_debug & request_level) {
101 if (function_name)
102 printk(KERN_DEBUG "[%s:%s], ", prefix, function_name);
103 va_start(args, format);
104 vprintk(format, args);
105 va_end(args);
106 }
107}
108EXPORT_SYMBOL(drm_ut_debug_printk);
109
110static int drm_minor_get_id(struct drm_device *dev, int type)
111{
112 int ret;
113 int base = 0, limit = 63;
114
115 if (type == DRM_MINOR_CONTROL) {
116 base += 64;
117 limit = base + 127;
118 } else if (type == DRM_MINOR_RENDER) {
119 base += 128;
120 limit = base + 255;
121 }
122
123 mutex_lock(&dev->struct_mutex);
124 ret = idr_alloc(&drm_minors_idr, NULL, base, limit, GFP_KERNEL);
125 mutex_unlock(&dev->struct_mutex);
126
127 return ret == -ENOSPC ? -EINVAL : ret;
128}
129
130struct drm_master *drm_master_create(struct drm_minor *minor)
131{
132 struct drm_master *master;
133
134 master = kzalloc(sizeof(*master), GFP_KERNEL);
135 if (!master)
136 return NULL;
137
138 kref_init(&master->refcount);
139 spin_lock_init(&master->lock.spinlock);
140 init_waitqueue_head(&master->lock.lock_queue);
141 drm_ht_create(&master->magiclist, DRM_MAGIC_HASH_ORDER);
142 INIT_LIST_HEAD(&master->magicfree);
143 master->minor = minor;
144
145 list_add_tail(&master->head, &minor->master_list);
146
147 return master;
148}
149
150struct drm_master *drm_master_get(struct drm_master *master)
151{
152 kref_get(&master->refcount);
153 return master;
154}
155EXPORT_SYMBOL(drm_master_get);
156
157static void drm_master_destroy(struct kref *kref)
158{
159 struct drm_master *master = container_of(kref, struct drm_master, refcount);
160 struct drm_magic_entry *pt, *next;
161 struct drm_device *dev = master->minor->dev;
162 struct drm_map_list *r_list, *list_temp;
163
164 list_del(&master->head);
165
166 if (dev->driver->master_destroy)
167 dev->driver->master_destroy(dev, master);
168
169 list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) {
170 if (r_list->master == master) {
171 drm_rmmap_locked(dev, r_list->map);
172 r_list = NULL;
173 }
174 }
175
176 if (master->unique) {
177 kfree(master->unique);
178 master->unique = NULL;
179 master->unique_len = 0;
180 }
181
182 kfree(dev->devname);
183 dev->devname = NULL;
184
185 list_for_each_entry_safe(pt, next, &master->magicfree, head) {
186 list_del(&pt->head);
187 drm_ht_remove_item(&master->magiclist, &pt->hash_item);
188 kfree(pt);
189 }
190
191 drm_ht_remove(&master->magiclist);
192
193 kfree(master);
194}
195
196void drm_master_put(struct drm_master **master)
197{
198 kref_put(&(*master)->refcount, drm_master_destroy);
199 *master = NULL;
200}
201EXPORT_SYMBOL(drm_master_put);
202
203int drm_setmaster_ioctl(struct drm_device *dev, void *data,
204 struct drm_file *file_priv)
205{
206 int ret;
207
208 if (file_priv->is_master)
209 return 0;
210
211 if (file_priv->minor->master && file_priv->minor->master != file_priv->master)
212 return -EINVAL;
213
214 if (!file_priv->master)
215 return -EINVAL;
216
217 if (file_priv->minor->master)
218 return -EINVAL;
219
220 mutex_lock(&dev->struct_mutex);
221 file_priv->minor->master = drm_master_get(file_priv->master);
222 file_priv->is_master = 1;
223 if (dev->driver->master_set) {
224 ret = dev->driver->master_set(dev, file_priv, false);
225 if (unlikely(ret != 0)) {
226 file_priv->is_master = 0;
227 drm_master_put(&file_priv->minor->master);
228 }
229 }
230 mutex_unlock(&dev->struct_mutex);
231
232 return 0;
233}
234
235int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
236 struct drm_file *file_priv)
237{
238 if (!file_priv->is_master)
239 return -EINVAL;
240
241 if (!file_priv->minor->master)
242 return -EINVAL;
243
244 mutex_lock(&dev->struct_mutex);
245 if (dev->driver->master_drop)
246 dev->driver->master_drop(dev, file_priv, false);
247 drm_master_put(&file_priv->minor->master);
248 file_priv->is_master = 0;
249 mutex_unlock(&dev->struct_mutex);
250 return 0;
251}
252
253int drm_fill_in_dev(struct drm_device *dev,
254 const struct pci_device_id *ent,
255 struct drm_driver *driver)
256{
257 int retcode;
258
259 INIT_LIST_HEAD(&dev->filelist);
260 INIT_LIST_HEAD(&dev->ctxlist);
261 INIT_LIST_HEAD(&dev->vmalist);
262 INIT_LIST_HEAD(&dev->maplist);
263 INIT_LIST_HEAD(&dev->vblank_event_list);
264
265 spin_lock_init(&dev->count_lock);
266 spin_lock_init(&dev->event_lock);
267 mutex_init(&dev->struct_mutex);
268 mutex_init(&dev->ctxlist_mutex);
269
270 if (drm_ht_create(&dev->map_hash, 12)) {
271 return -ENOMEM;
272 }
273
274
275 dev->counters = 6;
276 dev->types[0] = _DRM_STAT_LOCK;
277 dev->types[1] = _DRM_STAT_OPENS;
278 dev->types[2] = _DRM_STAT_CLOSES;
279 dev->types[3] = _DRM_STAT_IOCTLS;
280 dev->types[4] = _DRM_STAT_LOCKS;
281 dev->types[5] = _DRM_STAT_UNLOCKS;
282
283 dev->driver = driver;
284
285 if (dev->driver->bus->agp_init) {
286 retcode = dev->driver->bus->agp_init(dev);
287 if (retcode)
288 goto error_out_unreg;
289 }
290
291
292
293 retcode = drm_ctxbitmap_init(dev);
294 if (retcode) {
295 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
296 goto error_out_unreg;
297 }
298
299 if (driver->driver_features & DRIVER_GEM) {
300 retcode = drm_gem_init(dev);
301 if (retcode) {
302 DRM_ERROR("Cannot initialize graphics execution "
303 "manager (GEM)\n");
304 goto error_out_unreg;
305 }
306 }
307
308 return 0;
309
310 error_out_unreg:
311 drm_lastclose(dev);
312 return retcode;
313}
314EXPORT_SYMBOL(drm_fill_in_dev);
315
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323
324
325
326
327
328int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type)
329{
330 struct drm_minor *new_minor;
331 int ret;
332 int minor_id;
333
334 DRM_DEBUG("\n");
335
336 minor_id = drm_minor_get_id(dev, type);
337 if (minor_id < 0)
338 return minor_id;
339
340 new_minor = kzalloc(sizeof(struct drm_minor), GFP_KERNEL);
341 if (!new_minor) {
342 ret = -ENOMEM;
343 goto err_idr;
344 }
345
346 new_minor->type = type;
347 new_minor->device = MKDEV(DRM_MAJOR, minor_id);
348 new_minor->dev = dev;
349 new_minor->index = minor_id;
350 INIT_LIST_HEAD(&new_minor->master_list);
351
352 idr_replace(&drm_minors_idr, new_minor, minor_id);
353
354 if (type == DRM_MINOR_LEGACY) {
355 ret = drm_proc_init(new_minor, minor_id, drm_proc_root);
356 if (ret) {
357 DRM_ERROR("DRM: Failed to initialize /proc/dri.\n");
358 goto err_mem;
359 }
360 } else
361 new_minor->proc_root = NULL;
362
363#if defined(CONFIG_DEBUG_FS)
364 ret = drm_debugfs_init(new_minor, minor_id, drm_debugfs_root);
365 if (ret) {
366 DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
367 goto err_g2;
368 }
369#endif
370
371 ret = drm_sysfs_device_add(new_minor);
372 if (ret) {
373 printk(KERN_ERR
374 "DRM: Error sysfs_device_add.\n");
375 goto err_g2;
376 }
377 *minor = new_minor;
378
379 DRM_DEBUG("new minor assigned %d\n", minor_id);
380 return 0;
381
382
383err_g2:
384 if (new_minor->type == DRM_MINOR_LEGACY)
385 drm_proc_cleanup(new_minor, drm_proc_root);
386err_mem:
387 kfree(new_minor);
388err_idr:
389 idr_remove(&drm_minors_idr, minor_id);
390 *minor = NULL;
391 return ret;
392}
393EXPORT_SYMBOL(drm_get_minor);
394
395
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397
398
399
400
401
402
403
404
405int drm_put_minor(struct drm_minor **minor_p)
406{
407 struct drm_minor *minor = *minor_p;
408
409 DRM_DEBUG("release secondary minor %d\n", minor->index);
410
411 if (minor->type == DRM_MINOR_LEGACY)
412 drm_proc_cleanup(minor, drm_proc_root);
413#if defined(CONFIG_DEBUG_FS)
414 drm_debugfs_cleanup(minor);
415#endif
416
417 drm_sysfs_device_remove(minor);
418
419 idr_remove(&drm_minors_idr, minor->index);
420
421 kfree(minor);
422 *minor_p = NULL;
423 return 0;
424}
425EXPORT_SYMBOL(drm_put_minor);
426
427static void drm_unplug_minor(struct drm_minor *minor)
428{
429 drm_sysfs_device_remove(minor);
430}
431
432
433
434
435
436
437
438
439void drm_put_dev(struct drm_device *dev)
440{
441 struct drm_driver *driver;
442 struct drm_map_list *r_list, *list_temp;
443
444 DRM_DEBUG("\n");
445
446 if (!dev) {
447 DRM_ERROR("cleanup called no dev\n");
448 return;
449 }
450 driver = dev->driver;
451
452 drm_lastclose(dev);
453
454 if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) &&
455 dev->agp && dev->agp->agp_mtrr >= 0) {
456 int retval;
457 retval = mtrr_del(dev->agp->agp_mtrr,
458 dev->agp->agp_info.aper_base,
459 dev->agp->agp_info.aper_size * 1024 * 1024);
460 DRM_DEBUG("mtrr_del=%d\n", retval);
461 }
462
463 if (dev->driver->unload)
464 dev->driver->unload(dev);
465
466 if (drm_core_has_AGP(dev) && dev->agp) {
467 kfree(dev->agp);
468 dev->agp = NULL;
469 }
470
471 drm_vblank_cleanup(dev);
472
473 list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head)
474 drm_rmmap(dev, r_list->map);
475 drm_ht_remove(&dev->map_hash);
476
477 drm_ctxbitmap_cleanup(dev);
478
479 if (drm_core_check_feature(dev, DRIVER_MODESET))
480 drm_put_minor(&dev->control);
481
482 if (driver->driver_features & DRIVER_GEM)
483 drm_gem_destroy(dev);
484
485 drm_put_minor(&dev->primary);
486
487 list_del(&dev->driver_item);
488 kfree(dev->devname);
489 kfree(dev);
490}
491EXPORT_SYMBOL(drm_put_dev);
492
493void drm_unplug_dev(struct drm_device *dev)
494{
495
496 if (drm_core_check_feature(dev, DRIVER_MODESET))
497 drm_unplug_minor(dev->control);
498 drm_unplug_minor(dev->primary);
499
500 mutex_lock(&drm_global_mutex);
501
502 drm_device_set_unplugged(dev);
503
504 if (dev->open_count == 0) {
505 drm_put_dev(dev);
506 }
507 mutex_unlock(&drm_global_mutex);
508}
509EXPORT_SYMBOL(drm_unplug_dev);
510
