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 | ||
dcdb1674 | 257 | int drm_fill_in_dev(struct drm_device *dev, |
b5e89ed5 DA |
258 | const struct pci_device_id *ent, |
259 | struct drm_driver *driver) | |
1da177e4 LT |
260 | { |
261 | int retcode; | |
262 | ||
bd1b331f | 263 | INIT_LIST_HEAD(&dev->filelist); |
7c158ace DA |
264 | INIT_LIST_HEAD(&dev->ctxlist); |
265 | INIT_LIST_HEAD(&dev->vmalist); | |
266 | INIT_LIST_HEAD(&dev->maplist); | |
c9a9c5e0 | 267 | INIT_LIST_HEAD(&dev->vblank_event_list); |
7c158ace | 268 | |
1da177e4 | 269 | spin_lock_init(&dev->count_lock); |
c9a9c5e0 | 270 | spin_lock_init(&dev->event_lock); |
30e2fb18 DA |
271 | mutex_init(&dev->struct_mutex); |
272 | mutex_init(&dev->ctxlist_mutex); | |
1da177e4 | 273 | |
8d153f71 | 274 | if (drm_ht_create(&dev->map_hash, 12)) { |
8d153f71 TH |
275 | return -ENOMEM; |
276 | } | |
836cf046 | 277 | |
1da177e4 LT |
278 | /* the DRM has 6 basic counters */ |
279 | dev->counters = 6; | |
b5e89ed5 DA |
280 | dev->types[0] = _DRM_STAT_LOCK; |
281 | dev->types[1] = _DRM_STAT_OPENS; | |
282 | dev->types[2] = _DRM_STAT_CLOSES; | |
283 | dev->types[3] = _DRM_STAT_IOCTLS; | |
284 | dev->types[4] = _DRM_STAT_LOCKS; | |
285 | dev->types[5] = _DRM_STAT_UNLOCKS; | |
1da177e4 LT |
286 | |
287 | dev->driver = driver; | |
b5e89ed5 | 288 | |
8410ea3b DA |
289 | if (dev->driver->bus->agp_init) { |
290 | retcode = dev->driver->bus->agp_init(dev); | |
291 | if (retcode) | |
1da177e4 | 292 | goto error_out_unreg; |
1da177e4 LT |
293 | } |
294 | ||
7c510133 | 295 | drm_legacy_ctxbitmap_init(dev); |
1da177e4 | 296 | |
673a394b EA |
297 | if (driver->driver_features & DRIVER_GEM) { |
298 | retcode = drm_gem_init(dev); | |
299 | if (retcode) { | |
300 | DRM_ERROR("Cannot initialize graphics execution " | |
301 | "manager (GEM)\n"); | |
302 | goto error_out_unreg; | |
303 | } | |
304 | } | |
305 | ||
1da177e4 | 306 | return 0; |
b5e89ed5 DA |
307 | |
308 | error_out_unreg: | |
22eae947 | 309 | drm_lastclose(dev); |
1da177e4 LT |
310 | return retcode; |
311 | } | |
9c1dfc55 | 312 | EXPORT_SYMBOL(drm_fill_in_dev); |
1da177e4 | 313 | |
1da177e4 | 314 | |
1da177e4 LT |
315 | /** |
316 | * Get a secondary minor number. | |
317 | * | |
318 | * \param dev device data structure | |
319 | * \param sec-minor structure to hold the assigned minor | |
320 | * \return negative number on failure. | |
321 | * | |
cb6458f9 DV |
322 | * Search an empty entry and initialize it to the given parameters. This |
323 | * routines assigns minor numbers to secondary heads of multi-headed cards | |
1da177e4 | 324 | */ |
dcdb1674 | 325 | int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type) |
1da177e4 | 326 | { |
2c14f28b | 327 | struct drm_minor *new_minor; |
1da177e4 | 328 | int ret; |
2c14f28b | 329 | int minor_id; |
1da177e4 LT |
330 | |
331 | DRM_DEBUG("\n"); | |
332 | ||
2c14f28b DA |
333 | minor_id = drm_minor_get_id(dev, type); |
334 | if (minor_id < 0) | |
335 | return minor_id; | |
336 | ||
337 | new_minor = kzalloc(sizeof(struct drm_minor), GFP_KERNEL); | |
338 | if (!new_minor) { | |
339 | ret = -ENOMEM; | |
340 | goto err_idr; | |
341 | } | |
342 | ||
343 | new_minor->type = type; | |
344 | new_minor->device = MKDEV(DRM_MAJOR, minor_id); | |
345 | new_minor->dev = dev; | |
346 | new_minor->index = minor_id; | |
7c1c2871 | 347 | INIT_LIST_HEAD(&new_minor->master_list); |
2c14f28b DA |
348 | |
349 | idr_replace(&drm_minors_idr, new_minor, minor_id); | |
350 | ||
955b12de BG |
351 | #if defined(CONFIG_DEBUG_FS) |
352 | ret = drm_debugfs_init(new_minor, minor_id, drm_debugfs_root); | |
353 | if (ret) { | |
156f5a78 | 354 | DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n"); |
cb6458f9 | 355 | goto err_mem; |
955b12de BG |
356 | } |
357 | #endif | |
2c14f28b DA |
358 | |
359 | ret = drm_sysfs_device_add(new_minor); | |
360 | if (ret) { | |
361 | printk(KERN_ERR | |
362 | "DRM: Error sysfs_device_add.\n"); | |
cb6458f9 | 363 | goto err_debugfs; |
1da177e4 | 364 | } |
2c14f28b DA |
365 | *minor = new_minor; |
366 | ||
367 | DRM_DEBUG("new minor assigned %d\n", minor_id); | |
368 | return 0; | |
369 | ||
370 | ||
cb6458f9 DV |
371 | err_debugfs: |
372 | #if defined(CONFIG_DEBUG_FS) | |
373 | drm_debugfs_cleanup(new_minor); | |
2c14f28b | 374 | err_mem: |
cb6458f9 | 375 | #endif |
2c14f28b DA |
376 | kfree(new_minor); |
377 | err_idr: | |
378 | idr_remove(&drm_minors_idr, minor_id); | |
379 | *minor = NULL; | |
1da177e4 LT |
380 | return ret; |
381 | } | |
9c1dfc55 | 382 | EXPORT_SYMBOL(drm_get_minor); |
b5e89ed5 | 383 | |
1da177e4 LT |
384 | /** |
385 | * Put a secondary minor number. | |
386 | * | |
387 | * \param sec_minor - structure to be released | |
388 | * \return always zero | |
1da177e4 | 389 | */ |
2c14f28b | 390 | int drm_put_minor(struct drm_minor **minor_p) |
1da177e4 | 391 | { |
2c14f28b | 392 | struct drm_minor *minor = *minor_p; |
673a394b | 393 | |
2c14f28b | 394 | DRM_DEBUG("release secondary minor %d\n", minor->index); |
b5e89ed5 | 395 | |
955b12de BG |
396 | #if defined(CONFIG_DEBUG_FS) |
397 | drm_debugfs_cleanup(minor); | |
398 | #endif | |
399 | ||
2c14f28b | 400 | drm_sysfs_device_remove(minor); |
1da177e4 | 401 | |
2c14f28b | 402 | idr_remove(&drm_minors_idr, minor->index); |
b5e89ed5 | 403 | |
2c14f28b DA |
404 | kfree(minor); |
405 | *minor_p = NULL; | |
1da177e4 LT |
406 | return 0; |
407 | } | |
9c1dfc55 | 408 | EXPORT_SYMBOL(drm_put_minor); |
112b715e | 409 | |
2c07a21d DA |
410 | static void drm_unplug_minor(struct drm_minor *minor) |
411 | { | |
412 | drm_sysfs_device_remove(minor); | |
413 | } | |
414 | ||
112b715e KH |
415 | /** |
416 | * Called via drm_exit() at module unload time or when pci device is | |
417 | * unplugged. | |
418 | * | |
419 | * Cleans up all DRM device, calling drm_lastclose(). | |
420 | * | |
112b715e KH |
421 | */ |
422 | void drm_put_dev(struct drm_device *dev) | |
423 | { | |
ecca0683 | 424 | struct drm_driver *driver; |
112b715e KH |
425 | struct drm_map_list *r_list, *list_temp; |
426 | ||
427 | DRM_DEBUG("\n"); | |
428 | ||
429 | if (!dev) { | |
430 | DRM_ERROR("cleanup called no dev\n"); | |
431 | return; | |
432 | } | |
ecca0683 | 433 | driver = dev->driver; |
112b715e | 434 | |
112b715e KH |
435 | drm_lastclose(dev); |
436 | ||
112b715e KH |
437 | if (dev->driver->unload) |
438 | dev->driver->unload(dev); | |
439 | ||
28ec711c DH |
440 | if (dev->driver->bus->agp_destroy) |
441 | dev->driver->bus->agp_destroy(dev); | |
112b715e | 442 | |
b78315f0 JB |
443 | drm_vblank_cleanup(dev); |
444 | ||
112b715e KH |
445 | list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) |
446 | drm_rmmap(dev, r_list->map); | |
30ddbd94 BS |
447 | drm_ht_remove(&dev->map_hash); |
448 | ||
7c510133 | 449 | drm_legacy_ctxbitmap_cleanup(dev); |
112b715e KH |
450 | |
451 | if (drm_core_check_feature(dev, DRIVER_MODESET)) | |
452 | drm_put_minor(&dev->control); | |
453 | ||
1793126f DH |
454 | if (dev->render) |
455 | drm_put_minor(&dev->render); | |
456 | ||
112b715e KH |
457 | if (driver->driver_features & DRIVER_GEM) |
458 | drm_gem_destroy(dev); | |
459 | ||
460 | drm_put_minor(&dev->primary); | |
461 | ||
a250b9fd | 462 | list_del(&dev->driver_item); |
66141d3d | 463 | kfree(dev->devname); |
9a298b2a | 464 | kfree(dev); |
112b715e KH |
465 | } |
466 | EXPORT_SYMBOL(drm_put_dev); | |
2c07a21d DA |
467 | |
468 | void drm_unplug_dev(struct drm_device *dev) | |
469 | { | |
470 | /* for a USB device */ | |
471 | if (drm_core_check_feature(dev, DRIVER_MODESET)) | |
472 | drm_unplug_minor(dev->control); | |
1793126f DH |
473 | if (dev->render) |
474 | drm_unplug_minor(dev->render); | |
2c07a21d DA |
475 | drm_unplug_minor(dev->primary); |
476 | ||
477 | mutex_lock(&drm_global_mutex); | |
478 | ||
479 | drm_device_set_unplugged(dev); | |
480 | ||
481 | if (dev->open_count == 0) { | |
482 | drm_put_dev(dev); | |
483 | } | |
484 | mutex_unlock(&drm_global_mutex); | |
485 | } | |
486 | EXPORT_SYMBOL(drm_unplug_dev); |