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 | ||
c61eef72 ID |
49 | /* |
50 | * Default to use monotonic timestamps for wait-for-vblank and page-flip | |
51 | * complete events. | |
52 | */ | |
53 | unsigned int drm_timestamp_monotonic = 1; | |
54 | ||
b5e89ed5 DA |
55 | MODULE_AUTHOR(CORE_AUTHOR); |
56 | MODULE_DESCRIPTION(CORE_DESC); | |
1da177e4 | 57 | MODULE_LICENSE("GPL and additional rights"); |
1da177e4 | 58 | MODULE_PARM_DESC(debug, "Enable debug output"); |
27641c3f MK |
59 | MODULE_PARM_DESC(vblankoffdelay, "Delay until vblank irq auto-disable [msecs]"); |
60 | MODULE_PARM_DESC(timestamp_precision_usec, "Max. error on timestamps [usecs]"); | |
c61eef72 | 61 | MODULE_PARM_DESC(timestamp_monotonic, "Use monotonic timestamps"); |
1da177e4 | 62 | |
c0758146 | 63 | module_param_named(debug, drm_debug, int, 0600); |
27641c3f MK |
64 | module_param_named(vblankoffdelay, drm_vblank_offdelay, int, 0600); |
65 | module_param_named(timestamp_precision_usec, drm_timestamp_precision, int, 0600); | |
c61eef72 | 66 | module_param_named(timestamp_monotonic, drm_timestamp_monotonic, int, 0600); |
1da177e4 | 67 | |
2c14f28b DA |
68 | struct idr drm_minors_idr; |
69 | ||
0650fd58 | 70 | struct class *drm_class; |
1da177e4 | 71 | struct proc_dir_entry *drm_proc_root; |
955b12de | 72 | struct dentry *drm_debugfs_root; |
5ad3d883 JP |
73 | |
74 | int 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 | } | |
91 | EXPORT_SYMBOL(drm_err); | |
92 | ||
4fefcb27 | 93 | void 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; | |
1da177e4 | 99 | |
4fefcb27 | 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 | } | |
108 | EXPORT_SYMBOL(drm_ut_debug_printk); | |
5ad3d883 | 109 | |
2c14f28b DA |
110 | static int drm_minor_get_id(struct drm_device *dev, int type) |
111 | { | |
2c14f28b DA |
112 | int ret; |
113 | int base = 0, limit = 63; | |
114 | ||
f453ba04 DA |
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 | ||
2c14f28b | 123 | mutex_lock(&dev->struct_mutex); |
2e928815 | 124 | ret = idr_alloc(&drm_minors_idr, NULL, base, limit, GFP_KERNEL); |
2c14f28b | 125 | mutex_unlock(&dev->struct_mutex); |
2e928815 TH |
126 | |
127 | return ret == -ENOSPC ? -EINVAL : ret; | |
2c14f28b DA |
128 | } |
129 | ||
7c1c2871 DA |
130 | struct drm_master *drm_master_create(struct drm_minor *minor) |
131 | { | |
132 | struct drm_master *master; | |
133 | ||
9a298b2a | 134 | master = kzalloc(sizeof(*master), GFP_KERNEL); |
7c1c2871 DA |
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 | ||
150 | struct drm_master *drm_master_get(struct drm_master *master) | |
151 | { | |
152 | kref_get(&master->refcount); | |
153 | return master; | |
154 | } | |
85bb0c37 | 155 | EXPORT_SYMBOL(drm_master_get); |
7c1c2871 DA |
156 | |
157 | static 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; | |
c1ff85d9 | 162 | struct drm_map_list *r_list, *list_temp; |
7c1c2871 DA |
163 | |
164 | list_del(&master->head); | |
165 | ||
166 | if (dev->driver->master_destroy) | |
167 | dev->driver->master_destroy(dev, master); | |
168 | ||
c1ff85d9 DA |
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 | ||
7c1c2871 | 176 | if (master->unique) { |
9a298b2a | 177 | kfree(master->unique); |
7c1c2871 DA |
178 | master->unique = NULL; |
179 | master->unique_len = 0; | |
180 | } | |
181 | ||
6e35023f CW |
182 | kfree(dev->devname); |
183 | dev->devname = NULL; | |
184 | ||
7c1c2871 DA |
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); | |
9a298b2a | 188 | kfree(pt); |
7c1c2871 DA |
189 | } |
190 | ||
191 | drm_ht_remove(&master->magiclist); | |
192 | ||
9a298b2a | 193 | kfree(master); |
7c1c2871 DA |
194 | } |
195 | ||
196 | void drm_master_put(struct drm_master **master) | |
197 | { | |
198 | kref_put(&(*master)->refcount, drm_master_destroy); | |
199 | *master = NULL; | |
200 | } | |
85bb0c37 | 201 | EXPORT_SYMBOL(drm_master_put); |
7c1c2871 DA |
202 | |
203 | int drm_setmaster_ioctl(struct drm_device *dev, void *data, | |
204 | struct drm_file *file_priv) | |
205 | { | |
4a1b0714 | 206 | int ret; |
862302ff | 207 | |
6b008426 JB |
208 | if (file_priv->is_master) |
209 | return 0; | |
210 | ||
7c1c2871 DA |
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 | ||
08bec5b4 DH |
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); | |
862302ff | 228 | } |
7c1c2871 | 229 | } |
08bec5b4 | 230 | mutex_unlock(&dev->struct_mutex); |
7c1c2871 DA |
231 | |
232 | return 0; | |
233 | } | |
234 | ||
235 | int drm_dropmaster_ioctl(struct drm_device *dev, void *data, | |
236 | struct drm_file *file_priv) | |
237 | { | |
6b008426 | 238 | if (!file_priv->is_master) |
7c1c2871 | 239 | return -EINVAL; |
6b008426 | 240 | |
07f1c7a7 DA |
241 | if (!file_priv->minor->master) |
242 | return -EINVAL; | |
243 | ||
7c1c2871 | 244 | mutex_lock(&dev->struct_mutex); |
862302ff TH |
245 | if (dev->driver->master_drop) |
246 | dev->driver->master_drop(dev, file_priv, false); | |
7c1c2871 | 247 | drm_master_put(&file_priv->minor->master); |
6b008426 | 248 | file_priv->is_master = 0; |
7c1c2871 DA |
249 | mutex_unlock(&dev->struct_mutex); |
250 | return 0; | |
251 | } | |
252 | ||
dcdb1674 | 253 | int drm_fill_in_dev(struct drm_device *dev, |
b5e89ed5 DA |
254 | const struct pci_device_id *ent, |
255 | struct drm_driver *driver) | |
1da177e4 LT |
256 | { |
257 | int retcode; | |
258 | ||
bd1b331f | 259 | INIT_LIST_HEAD(&dev->filelist); |
7c158ace DA |
260 | INIT_LIST_HEAD(&dev->ctxlist); |
261 | INIT_LIST_HEAD(&dev->vmalist); | |
262 | INIT_LIST_HEAD(&dev->maplist); | |
c9a9c5e0 | 263 | INIT_LIST_HEAD(&dev->vblank_event_list); |
7c158ace | 264 | |
1da177e4 | 265 | spin_lock_init(&dev->count_lock); |
c9a9c5e0 | 266 | spin_lock_init(&dev->event_lock); |
30e2fb18 DA |
267 | mutex_init(&dev->struct_mutex); |
268 | mutex_init(&dev->ctxlist_mutex); | |
1da177e4 | 269 | |
8d153f71 | 270 | if (drm_ht_create(&dev->map_hash, 12)) { |
8d153f71 TH |
271 | return -ENOMEM; |
272 | } | |
836cf046 | 273 | |
1da177e4 LT |
274 | /* the DRM has 6 basic counters */ |
275 | dev->counters = 6; | |
b5e89ed5 DA |
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; | |
1da177e4 LT |
282 | |
283 | dev->driver = driver; | |
b5e89ed5 | 284 | |
8410ea3b DA |
285 | if (dev->driver->bus->agp_init) { |
286 | retcode = dev->driver->bus->agp_init(dev); | |
287 | if (retcode) | |
1da177e4 | 288 | goto error_out_unreg; |
1da177e4 LT |
289 | } |
290 | ||
2716a02f | 291 | |
8410ea3b | 292 | |
b5e89ed5 DA |
293 | retcode = drm_ctxbitmap_init(dev); |
294 | if (retcode) { | |
295 | DRM_ERROR("Cannot allocate memory for context bitmap.\n"); | |
1da177e4 LT |
296 | goto error_out_unreg; |
297 | } | |
298 | ||
673a394b EA |
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 | ||
1da177e4 | 308 | return 0; |
b5e89ed5 DA |
309 | |
310 | error_out_unreg: | |
22eae947 | 311 | drm_lastclose(dev); |
1da177e4 LT |
312 | return retcode; |
313 | } | |
9c1dfc55 | 314 | EXPORT_SYMBOL(drm_fill_in_dev); |
1da177e4 | 315 | |
1da177e4 | 316 | |
1da177e4 LT |
317 | /** |
318 | * Get a secondary minor number. | |
319 | * | |
320 | * \param dev device data structure | |
321 | * \param sec-minor structure to hold the assigned minor | |
322 | * \return negative number on failure. | |
323 | * | |
324 | * Search an empty entry and initialize it to the given parameters, and | |
325 | * create the proc init entry via proc_init(). This routines assigns | |
326 | * minor numbers to secondary heads of multi-headed cards | |
327 | */ | |
dcdb1674 | 328 | int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type) |
1da177e4 | 329 | { |
2c14f28b | 330 | struct drm_minor *new_minor; |
1da177e4 | 331 | int ret; |
2c14f28b | 332 | int minor_id; |
1da177e4 LT |
333 | |
334 | DRM_DEBUG("\n"); | |
335 | ||
2c14f28b DA |
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; | |
7c1c2871 | 350 | INIT_LIST_HEAD(&new_minor->master_list); |
2c14f28b DA |
351 | |
352 | idr_replace(&drm_minors_idr, new_minor, minor_id); | |
353 | ||
354 | if (type == DRM_MINOR_LEGACY) { | |
b63e6aa5 | 355 | ret = drm_proc_init(new_minor, drm_proc_root); |
2c14f28b DA |
356 | if (ret) { |
357 | DRM_ERROR("DRM: Failed to initialize /proc/dri.\n"); | |
358 | goto err_mem; | |
1da177e4 | 359 | } |
2c14f28b | 360 | } else |
955b12de BG |
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) { | |
156f5a78 | 366 | DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n"); |
955b12de BG |
367 | goto err_g2; |
368 | } | |
369 | #endif | |
2c14f28b DA |
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; | |
1da177e4 | 376 | } |
2c14f28b DA |
377 | *minor = new_minor; |
378 | ||
379 | DRM_DEBUG("new minor assigned %d\n", minor_id); | |
380 | return 0; | |
381 | ||
382 | ||
383 | err_g2: | |
384 | if (new_minor->type == DRM_MINOR_LEGACY) | |
385 | drm_proc_cleanup(new_minor, drm_proc_root); | |
386 | err_mem: | |
387 | kfree(new_minor); | |
388 | err_idr: | |
389 | idr_remove(&drm_minors_idr, minor_id); | |
390 | *minor = NULL; | |
1da177e4 LT |
391 | return ret; |
392 | } | |
9c1dfc55 | 393 | EXPORT_SYMBOL(drm_get_minor); |
b5e89ed5 | 394 | |
1da177e4 LT |
395 | /** |
396 | * Put a secondary minor number. | |
397 | * | |
398 | * \param sec_minor - structure to be released | |
399 | * \return always zero | |
400 | * | |
401 | * Cleans up the proc resources. Not legal for this to be the | |
402 | * last minor released. | |
403 | * | |
404 | */ | |
2c14f28b | 405 | int drm_put_minor(struct drm_minor **minor_p) |
1da177e4 | 406 | { |
2c14f28b | 407 | struct drm_minor *minor = *minor_p; |
673a394b | 408 | |
2c14f28b | 409 | DRM_DEBUG("release secondary minor %d\n", minor->index); |
b5e89ed5 | 410 | |
2c14f28b DA |
411 | if (minor->type == DRM_MINOR_LEGACY) |
412 | drm_proc_cleanup(minor, drm_proc_root); | |
955b12de BG |
413 | #if defined(CONFIG_DEBUG_FS) |
414 | drm_debugfs_cleanup(minor); | |
415 | #endif | |
416 | ||
2c14f28b | 417 | drm_sysfs_device_remove(minor); |
1da177e4 | 418 | |
2c14f28b | 419 | idr_remove(&drm_minors_idr, minor->index); |
b5e89ed5 | 420 | |
2c14f28b DA |
421 | kfree(minor); |
422 | *minor_p = NULL; | |
1da177e4 LT |
423 | return 0; |
424 | } | |
9c1dfc55 | 425 | EXPORT_SYMBOL(drm_put_minor); |
112b715e | 426 | |
2c07a21d DA |
427 | static void drm_unplug_minor(struct drm_minor *minor) |
428 | { | |
429 | drm_sysfs_device_remove(minor); | |
430 | } | |
431 | ||
112b715e KH |
432 | /** |
433 | * Called via drm_exit() at module unload time or when pci device is | |
434 | * unplugged. | |
435 | * | |
436 | * Cleans up all DRM device, calling drm_lastclose(). | |
437 | * | |
112b715e KH |
438 | */ |
439 | void drm_put_dev(struct drm_device *dev) | |
440 | { | |
ecca0683 | 441 | struct drm_driver *driver; |
112b715e KH |
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 | } | |
ecca0683 | 450 | driver = dev->driver; |
112b715e | 451 | |
112b715e KH |
452 | drm_lastclose(dev); |
453 | ||
f435046d AL |
454 | if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) && dev->agp) |
455 | arch_phys_wc_del(dev->agp->agp_mtrr); | |
112b715e KH |
456 | |
457 | if (dev->driver->unload) | |
458 | dev->driver->unload(dev); | |
459 | ||
460 | if (drm_core_has_AGP(dev) && dev->agp) { | |
9a298b2a | 461 | kfree(dev->agp); |
112b715e KH |
462 | dev->agp = NULL; |
463 | } | |
464 | ||
b78315f0 JB |
465 | drm_vblank_cleanup(dev); |
466 | ||
112b715e KH |
467 | list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) |
468 | drm_rmmap(dev, r_list->map); | |
30ddbd94 BS |
469 | drm_ht_remove(&dev->map_hash); |
470 | ||
471 | drm_ctxbitmap_cleanup(dev); | |
112b715e KH |
472 | |
473 | if (drm_core_check_feature(dev, DRIVER_MODESET)) | |
474 | drm_put_minor(&dev->control); | |
475 | ||
476 | if (driver->driver_features & DRIVER_GEM) | |
477 | drm_gem_destroy(dev); | |
478 | ||
479 | drm_put_minor(&dev->primary); | |
480 | ||
a250b9fd | 481 | list_del(&dev->driver_item); |
66141d3d | 482 | kfree(dev->devname); |
9a298b2a | 483 | kfree(dev); |
112b715e KH |
484 | } |
485 | EXPORT_SYMBOL(drm_put_dev); | |
2c07a21d DA |
486 | |
487 | void drm_unplug_dev(struct drm_device *dev) | |
488 | { | |
489 | /* for a USB device */ | |
490 | if (drm_core_check_feature(dev, DRIVER_MODESET)) | |
491 | drm_unplug_minor(dev->control); | |
492 | drm_unplug_minor(dev->primary); | |
493 | ||
494 | mutex_lock(&drm_global_mutex); | |
495 | ||
496 | drm_device_set_unplugged(dev); | |
497 | ||
498 | if (dev->open_count == 0) { | |
499 | drm_put_dev(dev); | |
500 | } | |
501 | mutex_unlock(&drm_global_mutex); | |
502 | } | |
503 | EXPORT_SYMBOL(drm_unplug_dev); |