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 | ||
27641c3f MK |
43 | unsigned int drm_vblank_offdelay = 5000; /* Default to 5000 msecs. */ |
44 | EXPORT_SYMBOL(drm_vblank_offdelay); | |
45 | ||
46 | unsigned int drm_timestamp_precision = 20; /* Default to 20 usecs. */ | |
47 | EXPORT_SYMBOL(drm_timestamp_precision); | |
48 | ||
b5e89ed5 DA |
49 | MODULE_AUTHOR(CORE_AUTHOR); |
50 | MODULE_DESCRIPTION(CORE_DESC); | |
1da177e4 | 51 | MODULE_LICENSE("GPL and additional rights"); |
1da177e4 | 52 | MODULE_PARM_DESC(debug, "Enable debug output"); |
27641c3f MK |
53 | MODULE_PARM_DESC(vblankoffdelay, "Delay until vblank irq auto-disable [msecs]"); |
54 | MODULE_PARM_DESC(timestamp_precision_usec, "Max. error on timestamps [usecs]"); | |
1da177e4 | 55 | |
c0758146 | 56 | module_param_named(debug, drm_debug, int, 0600); |
27641c3f MK |
57 | module_param_named(vblankoffdelay, drm_vblank_offdelay, int, 0600); |
58 | module_param_named(timestamp_precision_usec, drm_timestamp_precision, int, 0600); | |
1da177e4 | 59 | |
2c14f28b DA |
60 | struct idr drm_minors_idr; |
61 | ||
0650fd58 | 62 | struct class *drm_class; |
1da177e4 | 63 | struct proc_dir_entry *drm_proc_root; |
955b12de | 64 | struct dentry *drm_debugfs_root; |
5ad3d883 JP |
65 | |
66 | int drm_err(const char *func, const char *format, ...) | |
67 | { | |
68 | struct va_format vaf; | |
69 | va_list args; | |
70 | int r; | |
71 | ||
72 | va_start(args, format); | |
73 | ||
74 | vaf.fmt = format; | |
75 | vaf.va = &args; | |
76 | ||
77 | r = printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* %pV", func, &vaf); | |
78 | ||
79 | va_end(args); | |
80 | ||
81 | return r; | |
82 | } | |
83 | EXPORT_SYMBOL(drm_err); | |
84 | ||
4fefcb27 | 85 | void drm_ut_debug_printk(unsigned int request_level, |
86 | const char *prefix, | |
87 | const char *function_name, | |
88 | const char *format, ...) | |
89 | { | |
90 | va_list args; | |
1da177e4 | 91 | |
4fefcb27 | 92 | if (drm_debug & request_level) { |
93 | if (function_name) | |
94 | printk(KERN_DEBUG "[%s:%s], ", prefix, function_name); | |
95 | va_start(args, format); | |
96 | vprintk(format, args); | |
97 | va_end(args); | |
98 | } | |
99 | } | |
100 | EXPORT_SYMBOL(drm_ut_debug_printk); | |
5ad3d883 | 101 | |
2c14f28b DA |
102 | static int drm_minor_get_id(struct drm_device *dev, int type) |
103 | { | |
104 | int new_id; | |
105 | int ret; | |
106 | int base = 0, limit = 63; | |
107 | ||
f453ba04 DA |
108 | if (type == DRM_MINOR_CONTROL) { |
109 | base += 64; | |
110 | limit = base + 127; | |
111 | } else if (type == DRM_MINOR_RENDER) { | |
112 | base += 128; | |
113 | limit = base + 255; | |
114 | } | |
115 | ||
2c14f28b DA |
116 | again: |
117 | if (idr_pre_get(&drm_minors_idr, GFP_KERNEL) == 0) { | |
118 | DRM_ERROR("Out of memory expanding drawable idr\n"); | |
119 | return -ENOMEM; | |
120 | } | |
121 | mutex_lock(&dev->struct_mutex); | |
122 | ret = idr_get_new_above(&drm_minors_idr, NULL, | |
123 | base, &new_id); | |
124 | mutex_unlock(&dev->struct_mutex); | |
f1ae126c | 125 | if (ret == -EAGAIN) |
2c14f28b | 126 | goto again; |
f1ae126c | 127 | else if (ret) |
2c14f28b | 128 | return ret; |
2c14f28b DA |
129 | |
130 | if (new_id >= limit) { | |
131 | idr_remove(&drm_minors_idr, new_id); | |
132 | return -EINVAL; | |
133 | } | |
134 | return new_id; | |
135 | } | |
136 | ||
7c1c2871 DA |
137 | struct drm_master *drm_master_create(struct drm_minor *minor) |
138 | { | |
139 | struct drm_master *master; | |
140 | ||
9a298b2a | 141 | master = kzalloc(sizeof(*master), GFP_KERNEL); |
7c1c2871 DA |
142 | if (!master) |
143 | return NULL; | |
144 | ||
145 | kref_init(&master->refcount); | |
146 | spin_lock_init(&master->lock.spinlock); | |
147 | init_waitqueue_head(&master->lock.lock_queue); | |
148 | drm_ht_create(&master->magiclist, DRM_MAGIC_HASH_ORDER); | |
149 | INIT_LIST_HEAD(&master->magicfree); | |
150 | master->minor = minor; | |
151 | ||
152 | list_add_tail(&master->head, &minor->master_list); | |
153 | ||
154 | return master; | |
155 | } | |
156 | ||
157 | struct drm_master *drm_master_get(struct drm_master *master) | |
158 | { | |
159 | kref_get(&master->refcount); | |
160 | return master; | |
161 | } | |
85bb0c37 | 162 | EXPORT_SYMBOL(drm_master_get); |
7c1c2871 DA |
163 | |
164 | static void drm_master_destroy(struct kref *kref) | |
165 | { | |
166 | struct drm_master *master = container_of(kref, struct drm_master, refcount); | |
167 | struct drm_magic_entry *pt, *next; | |
168 | struct drm_device *dev = master->minor->dev; | |
c1ff85d9 | 169 | struct drm_map_list *r_list, *list_temp; |
7c1c2871 DA |
170 | |
171 | list_del(&master->head); | |
172 | ||
173 | if (dev->driver->master_destroy) | |
174 | dev->driver->master_destroy(dev, master); | |
175 | ||
c1ff85d9 DA |
176 | list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) { |
177 | if (r_list->master == master) { | |
178 | drm_rmmap_locked(dev, r_list->map); | |
179 | r_list = NULL; | |
180 | } | |
181 | } | |
182 | ||
7c1c2871 | 183 | if (master->unique) { |
9a298b2a | 184 | kfree(master->unique); |
7c1c2871 DA |
185 | master->unique = NULL; |
186 | master->unique_len = 0; | |
187 | } | |
188 | ||
6e35023f CW |
189 | kfree(dev->devname); |
190 | dev->devname = NULL; | |
191 | ||
7c1c2871 DA |
192 | list_for_each_entry_safe(pt, next, &master->magicfree, head) { |
193 | list_del(&pt->head); | |
194 | drm_ht_remove_item(&master->magiclist, &pt->hash_item); | |
9a298b2a | 195 | kfree(pt); |
7c1c2871 DA |
196 | } |
197 | ||
198 | drm_ht_remove(&master->magiclist); | |
199 | ||
9a298b2a | 200 | kfree(master); |
7c1c2871 DA |
201 | } |
202 | ||
203 | void drm_master_put(struct drm_master **master) | |
204 | { | |
205 | kref_put(&(*master)->refcount, drm_master_destroy); | |
206 | *master = NULL; | |
207 | } | |
85bb0c37 | 208 | EXPORT_SYMBOL(drm_master_put); |
7c1c2871 DA |
209 | |
210 | int drm_setmaster_ioctl(struct drm_device *dev, void *data, | |
211 | struct drm_file *file_priv) | |
212 | { | |
4a1b0714 | 213 | int ret; |
862302ff | 214 | |
6b008426 JB |
215 | if (file_priv->is_master) |
216 | return 0; | |
217 | ||
7c1c2871 DA |
218 | if (file_priv->minor->master && file_priv->minor->master != file_priv->master) |
219 | return -EINVAL; | |
220 | ||
221 | if (!file_priv->master) | |
222 | return -EINVAL; | |
223 | ||
224 | if (!file_priv->minor->master && | |
225 | file_priv->minor->master != file_priv->master) { | |
226 | mutex_lock(&dev->struct_mutex); | |
227 | file_priv->minor->master = drm_master_get(file_priv->master); | |
6b008426 | 228 | file_priv->is_master = 1; |
862302ff TH |
229 | if (dev->driver->master_set) { |
230 | ret = dev->driver->master_set(dev, file_priv, false); | |
231 | if (unlikely(ret != 0)) { | |
232 | file_priv->is_master = 0; | |
233 | drm_master_put(&file_priv->minor->master); | |
234 | } | |
235 | } | |
5ad8b7d1 | 236 | mutex_unlock(&dev->struct_mutex); |
7c1c2871 DA |
237 | } |
238 | ||
239 | return 0; | |
240 | } | |
241 | ||
242 | int drm_dropmaster_ioctl(struct drm_device *dev, void *data, | |
243 | struct drm_file *file_priv) | |
244 | { | |
6b008426 | 245 | if (!file_priv->is_master) |
7c1c2871 | 246 | return -EINVAL; |
6b008426 | 247 | |
07f1c7a7 DA |
248 | if (!file_priv->minor->master) |
249 | return -EINVAL; | |
250 | ||
7c1c2871 | 251 | mutex_lock(&dev->struct_mutex); |
862302ff TH |
252 | if (dev->driver->master_drop) |
253 | dev->driver->master_drop(dev, file_priv, false); | |
7c1c2871 | 254 | drm_master_put(&file_priv->minor->master); |
6b008426 | 255 | file_priv->is_master = 0; |
7c1c2871 DA |
256 | mutex_unlock(&dev->struct_mutex); |
257 | return 0; | |
258 | } | |
259 | ||
dcdb1674 | 260 | int drm_fill_in_dev(struct drm_device *dev, |
b5e89ed5 DA |
261 | const struct pci_device_id *ent, |
262 | struct drm_driver *driver) | |
1da177e4 LT |
263 | { |
264 | int retcode; | |
265 | ||
bd1b331f | 266 | INIT_LIST_HEAD(&dev->filelist); |
7c158ace DA |
267 | INIT_LIST_HEAD(&dev->ctxlist); |
268 | INIT_LIST_HEAD(&dev->vmalist); | |
269 | INIT_LIST_HEAD(&dev->maplist); | |
c9a9c5e0 | 270 | INIT_LIST_HEAD(&dev->vblank_event_list); |
7c158ace | 271 | |
1da177e4 | 272 | spin_lock_init(&dev->count_lock); |
c9a9c5e0 | 273 | spin_lock_init(&dev->event_lock); |
30e2fb18 DA |
274 | mutex_init(&dev->struct_mutex); |
275 | mutex_init(&dev->ctxlist_mutex); | |
1da177e4 | 276 | |
8d153f71 | 277 | if (drm_ht_create(&dev->map_hash, 12)) { |
8d153f71 TH |
278 | return -ENOMEM; |
279 | } | |
836cf046 | 280 | |
1da177e4 LT |
281 | /* the DRM has 6 basic counters */ |
282 | dev->counters = 6; | |
b5e89ed5 DA |
283 | dev->types[0] = _DRM_STAT_LOCK; |
284 | dev->types[1] = _DRM_STAT_OPENS; | |
285 | dev->types[2] = _DRM_STAT_CLOSES; | |
286 | dev->types[3] = _DRM_STAT_IOCTLS; | |
287 | dev->types[4] = _DRM_STAT_LOCKS; | |
288 | dev->types[5] = _DRM_STAT_UNLOCKS; | |
1da177e4 LT |
289 | |
290 | dev->driver = driver; | |
b5e89ed5 | 291 | |
8410ea3b DA |
292 | if (dev->driver->bus->agp_init) { |
293 | retcode = dev->driver->bus->agp_init(dev); | |
294 | if (retcode) | |
1da177e4 | 295 | goto error_out_unreg; |
1da177e4 LT |
296 | } |
297 | ||
2716a02f | 298 | |
8410ea3b | 299 | |
b5e89ed5 DA |
300 | retcode = drm_ctxbitmap_init(dev); |
301 | if (retcode) { | |
302 | DRM_ERROR("Cannot allocate memory for context bitmap.\n"); | |
1da177e4 LT |
303 | goto error_out_unreg; |
304 | } | |
305 | ||
673a394b EA |
306 | if (driver->driver_features & DRIVER_GEM) { |
307 | retcode = drm_gem_init(dev); | |
308 | if (retcode) { | |
309 | DRM_ERROR("Cannot initialize graphics execution " | |
310 | "manager (GEM)\n"); | |
311 | goto error_out_unreg; | |
312 | } | |
313 | } | |
314 | ||
1da177e4 | 315 | return 0; |
b5e89ed5 DA |
316 | |
317 | error_out_unreg: | |
22eae947 | 318 | drm_lastclose(dev); |
1da177e4 LT |
319 | return retcode; |
320 | } | |
9c1dfc55 | 321 | EXPORT_SYMBOL(drm_fill_in_dev); |
1da177e4 | 322 | |
1da177e4 | 323 | |
1da177e4 LT |
324 | /** |
325 | * Get a secondary minor number. | |
326 | * | |
327 | * \param dev device data structure | |
328 | * \param sec-minor structure to hold the assigned minor | |
329 | * \return negative number on failure. | |
330 | * | |
331 | * Search an empty entry and initialize it to the given parameters, and | |
332 | * create the proc init entry via proc_init(). This routines assigns | |
333 | * minor numbers to secondary heads of multi-headed cards | |
334 | */ | |
dcdb1674 | 335 | int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type) |
1da177e4 | 336 | { |
2c14f28b | 337 | struct drm_minor *new_minor; |
1da177e4 | 338 | int ret; |
2c14f28b | 339 | int minor_id; |
1da177e4 LT |
340 | |
341 | DRM_DEBUG("\n"); | |
342 | ||
2c14f28b DA |
343 | minor_id = drm_minor_get_id(dev, type); |
344 | if (minor_id < 0) | |
345 | return minor_id; | |
346 | ||
347 | new_minor = kzalloc(sizeof(struct drm_minor), GFP_KERNEL); | |
348 | if (!new_minor) { | |
349 | ret = -ENOMEM; | |
350 | goto err_idr; | |
351 | } | |
352 | ||
353 | new_minor->type = type; | |
354 | new_minor->device = MKDEV(DRM_MAJOR, minor_id); | |
355 | new_minor->dev = dev; | |
356 | new_minor->index = minor_id; | |
7c1c2871 | 357 | INIT_LIST_HEAD(&new_minor->master_list); |
2c14f28b DA |
358 | |
359 | idr_replace(&drm_minors_idr, new_minor, minor_id); | |
360 | ||
361 | if (type == DRM_MINOR_LEGACY) { | |
362 | ret = drm_proc_init(new_minor, minor_id, drm_proc_root); | |
363 | if (ret) { | |
364 | DRM_ERROR("DRM: Failed to initialize /proc/dri.\n"); | |
365 | goto err_mem; | |
1da177e4 | 366 | } |
2c14f28b | 367 | } else |
955b12de BG |
368 | new_minor->proc_root = NULL; |
369 | ||
370 | #if defined(CONFIG_DEBUG_FS) | |
371 | ret = drm_debugfs_init(new_minor, minor_id, drm_debugfs_root); | |
372 | if (ret) { | |
156f5a78 | 373 | DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n"); |
955b12de BG |
374 | goto err_g2; |
375 | } | |
376 | #endif | |
2c14f28b DA |
377 | |
378 | ret = drm_sysfs_device_add(new_minor); | |
379 | if (ret) { | |
380 | printk(KERN_ERR | |
381 | "DRM: Error sysfs_device_add.\n"); | |
382 | goto err_g2; | |
1da177e4 | 383 | } |
2c14f28b DA |
384 | *minor = new_minor; |
385 | ||
386 | DRM_DEBUG("new minor assigned %d\n", minor_id); | |
387 | return 0; | |
388 | ||
389 | ||
390 | err_g2: | |
391 | if (new_minor->type == DRM_MINOR_LEGACY) | |
392 | drm_proc_cleanup(new_minor, drm_proc_root); | |
393 | err_mem: | |
394 | kfree(new_minor); | |
395 | err_idr: | |
396 | idr_remove(&drm_minors_idr, minor_id); | |
397 | *minor = NULL; | |
1da177e4 LT |
398 | return ret; |
399 | } | |
9c1dfc55 | 400 | EXPORT_SYMBOL(drm_get_minor); |
b5e89ed5 | 401 | |
1da177e4 LT |
402 | /** |
403 | * Put a secondary minor number. | |
404 | * | |
405 | * \param sec_minor - structure to be released | |
406 | * \return always zero | |
407 | * | |
408 | * Cleans up the proc resources. Not legal for this to be the | |
409 | * last minor released. | |
410 | * | |
411 | */ | |
2c14f28b | 412 | int drm_put_minor(struct drm_minor **minor_p) |
1da177e4 | 413 | { |
2c14f28b | 414 | struct drm_minor *minor = *minor_p; |
673a394b | 415 | |
2c14f28b | 416 | DRM_DEBUG("release secondary minor %d\n", minor->index); |
b5e89ed5 | 417 | |
2c14f28b DA |
418 | if (minor->type == DRM_MINOR_LEGACY) |
419 | drm_proc_cleanup(minor, drm_proc_root); | |
955b12de BG |
420 | #if defined(CONFIG_DEBUG_FS) |
421 | drm_debugfs_cleanup(minor); | |
422 | #endif | |
423 | ||
2c14f28b | 424 | drm_sysfs_device_remove(minor); |
1da177e4 | 425 | |
2c14f28b | 426 | idr_remove(&drm_minors_idr, minor->index); |
b5e89ed5 | 427 | |
2c14f28b DA |
428 | kfree(minor); |
429 | *minor_p = NULL; | |
1da177e4 LT |
430 | return 0; |
431 | } | |
9c1dfc55 | 432 | EXPORT_SYMBOL(drm_put_minor); |
112b715e | 433 | |
2c07a21d DA |
434 | static void drm_unplug_minor(struct drm_minor *minor) |
435 | { | |
436 | drm_sysfs_device_remove(minor); | |
437 | } | |
438 | ||
112b715e KH |
439 | /** |
440 | * Called via drm_exit() at module unload time or when pci device is | |
441 | * unplugged. | |
442 | * | |
443 | * Cleans up all DRM device, calling drm_lastclose(). | |
444 | * | |
112b715e KH |
445 | */ |
446 | void drm_put_dev(struct drm_device *dev) | |
447 | { | |
ecca0683 | 448 | struct drm_driver *driver; |
112b715e KH |
449 | struct drm_map_list *r_list, *list_temp; |
450 | ||
451 | DRM_DEBUG("\n"); | |
452 | ||
453 | if (!dev) { | |
454 | DRM_ERROR("cleanup called no dev\n"); | |
455 | return; | |
456 | } | |
ecca0683 | 457 | driver = dev->driver; |
112b715e | 458 | |
112b715e KH |
459 | drm_lastclose(dev); |
460 | ||
461 | if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) && | |
462 | dev->agp && dev->agp->agp_mtrr >= 0) { | |
463 | int retval; | |
464 | retval = mtrr_del(dev->agp->agp_mtrr, | |
465 | dev->agp->agp_info.aper_base, | |
466 | dev->agp->agp_info.aper_size * 1024 * 1024); | |
467 | DRM_DEBUG("mtrr_del=%d\n", retval); | |
468 | } | |
469 | ||
470 | if (dev->driver->unload) | |
471 | dev->driver->unload(dev); | |
472 | ||
473 | if (drm_core_has_AGP(dev) && dev->agp) { | |
9a298b2a | 474 | kfree(dev->agp); |
112b715e KH |
475 | dev->agp = NULL; |
476 | } | |
477 | ||
b78315f0 JB |
478 | drm_vblank_cleanup(dev); |
479 | ||
112b715e KH |
480 | list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) |
481 | drm_rmmap(dev, r_list->map); | |
30ddbd94 BS |
482 | drm_ht_remove(&dev->map_hash); |
483 | ||
484 | drm_ctxbitmap_cleanup(dev); | |
112b715e KH |
485 | |
486 | if (drm_core_check_feature(dev, DRIVER_MODESET)) | |
487 | drm_put_minor(&dev->control); | |
488 | ||
489 | if (driver->driver_features & DRIVER_GEM) | |
490 | drm_gem_destroy(dev); | |
491 | ||
492 | drm_put_minor(&dev->primary); | |
493 | ||
a250b9fd | 494 | list_del(&dev->driver_item); |
112b715e | 495 | if (dev->devname) { |
9a298b2a | 496 | kfree(dev->devname); |
112b715e KH |
497 | dev->devname = NULL; |
498 | } | |
9a298b2a | 499 | kfree(dev); |
112b715e KH |
500 | } |
501 | EXPORT_SYMBOL(drm_put_dev); | |
2c07a21d DA |
502 | |
503 | void drm_unplug_dev(struct drm_device *dev) | |
504 | { | |
505 | /* for a USB device */ | |
506 | if (drm_core_check_feature(dev, DRIVER_MODESET)) | |
507 | drm_unplug_minor(dev->control); | |
508 | drm_unplug_minor(dev->primary); | |
509 | ||
510 | mutex_lock(&drm_global_mutex); | |
511 | ||
512 | drm_device_set_unplugged(dev); | |
513 | ||
514 | if (dev->open_count == 0) { | |
515 | drm_put_dev(dev); | |
516 | } | |
517 | mutex_unlock(&drm_global_mutex); | |
518 | } | |
519 | EXPORT_SYMBOL(drm_unplug_dev); |