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