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> | |
36 | #include "drmP.h" | |
37 | #include "drm_core.h" | |
38 | ||
b5e89ed5 | 39 | unsigned int drm_debug = 0; /* 1 to enable debug output */ |
1da177e4 LT |
40 | EXPORT_SYMBOL(drm_debug); |
41 | ||
b5e89ed5 DA |
42 | MODULE_AUTHOR(CORE_AUTHOR); |
43 | MODULE_DESCRIPTION(CORE_DESC); | |
1da177e4 | 44 | MODULE_LICENSE("GPL and additional rights"); |
1da177e4 LT |
45 | MODULE_PARM_DESC(debug, "Enable debug output"); |
46 | ||
c0758146 | 47 | module_param_named(debug, drm_debug, int, 0600); |
1da177e4 | 48 | |
2c14f28b DA |
49 | struct idr drm_minors_idr; |
50 | ||
0650fd58 | 51 | struct class *drm_class; |
1da177e4 | 52 | struct proc_dir_entry *drm_proc_root; |
955b12de | 53 | struct dentry *drm_debugfs_root; |
1da177e4 | 54 | |
2c14f28b DA |
55 | static int drm_minor_get_id(struct drm_device *dev, int type) |
56 | { | |
57 | int new_id; | |
58 | int ret; | |
59 | int base = 0, limit = 63; | |
60 | ||
f453ba04 DA |
61 | if (type == DRM_MINOR_CONTROL) { |
62 | base += 64; | |
63 | limit = base + 127; | |
64 | } else if (type == DRM_MINOR_RENDER) { | |
65 | base += 128; | |
66 | limit = base + 255; | |
67 | } | |
68 | ||
2c14f28b DA |
69 | again: |
70 | if (idr_pre_get(&drm_minors_idr, GFP_KERNEL) == 0) { | |
71 | DRM_ERROR("Out of memory expanding drawable idr\n"); | |
72 | return -ENOMEM; | |
73 | } | |
74 | mutex_lock(&dev->struct_mutex); | |
75 | ret = idr_get_new_above(&drm_minors_idr, NULL, | |
76 | base, &new_id); | |
77 | mutex_unlock(&dev->struct_mutex); | |
78 | if (ret == -EAGAIN) { | |
79 | goto again; | |
80 | } else if (ret) { | |
81 | return ret; | |
82 | } | |
83 | ||
84 | if (new_id >= limit) { | |
85 | idr_remove(&drm_minors_idr, new_id); | |
86 | return -EINVAL; | |
87 | } | |
88 | return new_id; | |
89 | } | |
90 | ||
7c1c2871 DA |
91 | struct drm_master *drm_master_create(struct drm_minor *minor) |
92 | { | |
93 | struct drm_master *master; | |
94 | ||
95 | master = drm_calloc(1, sizeof(*master), DRM_MEM_DRIVER); | |
96 | if (!master) | |
97 | return NULL; | |
98 | ||
99 | kref_init(&master->refcount); | |
100 | spin_lock_init(&master->lock.spinlock); | |
101 | init_waitqueue_head(&master->lock.lock_queue); | |
102 | drm_ht_create(&master->magiclist, DRM_MAGIC_HASH_ORDER); | |
103 | INIT_LIST_HEAD(&master->magicfree); | |
104 | master->minor = minor; | |
105 | ||
106 | list_add_tail(&master->head, &minor->master_list); | |
107 | ||
108 | return master; | |
109 | } | |
110 | ||
111 | struct drm_master *drm_master_get(struct drm_master *master) | |
112 | { | |
113 | kref_get(&master->refcount); | |
114 | return master; | |
115 | } | |
116 | ||
117 | static void drm_master_destroy(struct kref *kref) | |
118 | { | |
119 | struct drm_master *master = container_of(kref, struct drm_master, refcount); | |
120 | struct drm_magic_entry *pt, *next; | |
121 | struct drm_device *dev = master->minor->dev; | |
c1ff85d9 | 122 | struct drm_map_list *r_list, *list_temp; |
7c1c2871 DA |
123 | |
124 | list_del(&master->head); | |
125 | ||
126 | if (dev->driver->master_destroy) | |
127 | dev->driver->master_destroy(dev, master); | |
128 | ||
c1ff85d9 DA |
129 | list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) { |
130 | if (r_list->master == master) { | |
131 | drm_rmmap_locked(dev, r_list->map); | |
132 | r_list = NULL; | |
133 | } | |
134 | } | |
135 | ||
7c1c2871 | 136 | if (master->unique) { |
1147c9cd | 137 | drm_free(master->unique, master->unique_size, DRM_MEM_DRIVER); |
7c1c2871 DA |
138 | master->unique = NULL; |
139 | master->unique_len = 0; | |
140 | } | |
141 | ||
142 | list_for_each_entry_safe(pt, next, &master->magicfree, head) { | |
143 | list_del(&pt->head); | |
144 | drm_ht_remove_item(&master->magiclist, &pt->hash_item); | |
145 | drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC); | |
146 | } | |
147 | ||
148 | drm_ht_remove(&master->magiclist); | |
149 | ||
7c1c2871 DA |
150 | drm_free(master, sizeof(*master), DRM_MEM_DRIVER); |
151 | } | |
152 | ||
153 | void drm_master_put(struct drm_master **master) | |
154 | { | |
155 | kref_put(&(*master)->refcount, drm_master_destroy); | |
156 | *master = NULL; | |
157 | } | |
158 | ||
159 | int drm_setmaster_ioctl(struct drm_device *dev, void *data, | |
160 | struct drm_file *file_priv) | |
161 | { | |
6b008426 JB |
162 | if (file_priv->is_master) |
163 | return 0; | |
164 | ||
7c1c2871 DA |
165 | if (file_priv->minor->master && file_priv->minor->master != file_priv->master) |
166 | return -EINVAL; | |
167 | ||
168 | if (!file_priv->master) | |
169 | return -EINVAL; | |
170 | ||
171 | if (!file_priv->minor->master && | |
172 | file_priv->minor->master != file_priv->master) { | |
173 | mutex_lock(&dev->struct_mutex); | |
174 | file_priv->minor->master = drm_master_get(file_priv->master); | |
6b008426 | 175 | file_priv->is_master = 1; |
5ad8b7d1 | 176 | mutex_unlock(&dev->struct_mutex); |
7c1c2871 DA |
177 | } |
178 | ||
179 | return 0; | |
180 | } | |
181 | ||
182 | int drm_dropmaster_ioctl(struct drm_device *dev, void *data, | |
183 | struct drm_file *file_priv) | |
184 | { | |
6b008426 | 185 | if (!file_priv->is_master) |
7c1c2871 | 186 | return -EINVAL; |
6b008426 | 187 | |
7c1c2871 DA |
188 | mutex_lock(&dev->struct_mutex); |
189 | drm_master_put(&file_priv->minor->master); | |
6b008426 | 190 | file_priv->is_master = 0; |
7c1c2871 DA |
191 | mutex_unlock(&dev->struct_mutex); |
192 | return 0; | |
193 | } | |
194 | ||
84b1fd10 | 195 | static int drm_fill_in_dev(struct drm_device * dev, struct pci_dev *pdev, |
b5e89ed5 DA |
196 | const struct pci_device_id *ent, |
197 | struct drm_driver *driver) | |
1da177e4 LT |
198 | { |
199 | int retcode; | |
200 | ||
bd1b331f | 201 | INIT_LIST_HEAD(&dev->filelist); |
7c158ace DA |
202 | INIT_LIST_HEAD(&dev->ctxlist); |
203 | INIT_LIST_HEAD(&dev->vmalist); | |
204 | INIT_LIST_HEAD(&dev->maplist); | |
205 | ||
1da177e4 | 206 | spin_lock_init(&dev->count_lock); |
bea5679f | 207 | spin_lock_init(&dev->drw_lock); |
b5e89ed5 | 208 | init_timer(&dev->timer); |
30e2fb18 DA |
209 | mutex_init(&dev->struct_mutex); |
210 | mutex_init(&dev->ctxlist_mutex); | |
1da177e4 | 211 | |
45ea5dcd DA |
212 | idr_init(&dev->drw_idr); |
213 | ||
b5e89ed5 | 214 | dev->pdev = pdev; |
2f02cc3f EA |
215 | dev->pci_device = pdev->device; |
216 | dev->pci_vendor = pdev->vendor; | |
1da177e4 LT |
217 | |
218 | #ifdef __alpha__ | |
b5e89ed5 | 219 | dev->hose = pdev->sysdata; |
1da177e4 | 220 | #endif |
1da177e4 | 221 | |
8d153f71 | 222 | if (drm_ht_create(&dev->map_hash, 12)) { |
8d153f71 TH |
223 | return -ENOMEM; |
224 | } | |
836cf046 | 225 | |
1da177e4 LT |
226 | /* the DRM has 6 basic counters */ |
227 | dev->counters = 6; | |
b5e89ed5 DA |
228 | dev->types[0] = _DRM_STAT_LOCK; |
229 | dev->types[1] = _DRM_STAT_OPENS; | |
230 | dev->types[2] = _DRM_STAT_CLOSES; | |
231 | dev->types[3] = _DRM_STAT_IOCTLS; | |
232 | dev->types[4] = _DRM_STAT_LOCKS; | |
233 | dev->types[5] = _DRM_STAT_UNLOCKS; | |
1da177e4 LT |
234 | |
235 | dev->driver = driver; | |
b5e89ed5 | 236 | |
1da177e4 | 237 | if (drm_core_has_AGP(dev)) { |
cda17380 DA |
238 | if (drm_device_is_agp(dev)) |
239 | dev->agp = drm_agp_init(dev); | |
b5e89ed5 DA |
240 | if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) |
241 | && (dev->agp == NULL)) { | |
242 | DRM_ERROR("Cannot initialize the agpgart module.\n"); | |
1da177e4 LT |
243 | retcode = -EINVAL; |
244 | goto error_out_unreg; | |
245 | } | |
246 | if (drm_core_has_MTRR(dev)) { | |
247 | if (dev->agp) | |
b5e89ed5 DA |
248 | dev->agp->agp_mtrr = |
249 | mtrr_add(dev->agp->agp_info.aper_base, | |
250 | dev->agp->agp_info.aper_size * | |
251 | 1024 * 1024, MTRR_TYPE_WRCOMB, 1); | |
1da177e4 LT |
252 | } |
253 | } | |
254 | ||
2716a02f | 255 | |
b5e89ed5 DA |
256 | retcode = drm_ctxbitmap_init(dev); |
257 | if (retcode) { | |
258 | DRM_ERROR("Cannot allocate memory for context bitmap.\n"); | |
1da177e4 LT |
259 | goto error_out_unreg; |
260 | } | |
261 | ||
673a394b EA |
262 | if (driver->driver_features & DRIVER_GEM) { |
263 | retcode = drm_gem_init(dev); | |
264 | if (retcode) { | |
265 | DRM_ERROR("Cannot initialize graphics execution " | |
266 | "manager (GEM)\n"); | |
267 | goto error_out_unreg; | |
268 | } | |
269 | } | |
270 | ||
1da177e4 | 271 | return 0; |
b5e89ed5 DA |
272 | |
273 | error_out_unreg: | |
22eae947 | 274 | drm_lastclose(dev); |
1da177e4 LT |
275 | return retcode; |
276 | } | |
277 | ||
1da177e4 | 278 | |
1da177e4 LT |
279 | /** |
280 | * Get a secondary minor number. | |
281 | * | |
282 | * \param dev device data structure | |
283 | * \param sec-minor structure to hold the assigned minor | |
284 | * \return negative number on failure. | |
285 | * | |
286 | * Search an empty entry and initialize it to the given parameters, and | |
287 | * create the proc init entry via proc_init(). This routines assigns | |
288 | * minor numbers to secondary heads of multi-headed cards | |
289 | */ | |
2c14f28b | 290 | static int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type) |
1da177e4 | 291 | { |
2c14f28b | 292 | struct drm_minor *new_minor; |
1da177e4 | 293 | int ret; |
2c14f28b | 294 | int minor_id; |
1da177e4 LT |
295 | |
296 | DRM_DEBUG("\n"); | |
297 | ||
2c14f28b DA |
298 | minor_id = drm_minor_get_id(dev, type); |
299 | if (minor_id < 0) | |
300 | return minor_id; | |
301 | ||
302 | new_minor = kzalloc(sizeof(struct drm_minor), GFP_KERNEL); | |
303 | if (!new_minor) { | |
304 | ret = -ENOMEM; | |
305 | goto err_idr; | |
306 | } | |
307 | ||
308 | new_minor->type = type; | |
309 | new_minor->device = MKDEV(DRM_MAJOR, minor_id); | |
310 | new_minor->dev = dev; | |
311 | new_minor->index = minor_id; | |
7c1c2871 | 312 | INIT_LIST_HEAD(&new_minor->master_list); |
2c14f28b DA |
313 | |
314 | idr_replace(&drm_minors_idr, new_minor, minor_id); | |
315 | ||
316 | if (type == DRM_MINOR_LEGACY) { | |
317 | ret = drm_proc_init(new_minor, minor_id, drm_proc_root); | |
318 | if (ret) { | |
319 | DRM_ERROR("DRM: Failed to initialize /proc/dri.\n"); | |
320 | goto err_mem; | |
1da177e4 | 321 | } |
2c14f28b | 322 | } else |
955b12de BG |
323 | new_minor->proc_root = NULL; |
324 | ||
325 | #if defined(CONFIG_DEBUG_FS) | |
326 | ret = drm_debugfs_init(new_minor, minor_id, drm_debugfs_root); | |
327 | if (ret) { | |
328 | DRM_ERROR("DRM: Failed to initialize /debugfs/dri.\n"); | |
329 | goto err_g2; | |
330 | } | |
331 | #endif | |
2c14f28b DA |
332 | |
333 | ret = drm_sysfs_device_add(new_minor); | |
334 | if (ret) { | |
335 | printk(KERN_ERR | |
336 | "DRM: Error sysfs_device_add.\n"); | |
337 | goto err_g2; | |
1da177e4 | 338 | } |
2c14f28b DA |
339 | *minor = new_minor; |
340 | ||
341 | DRM_DEBUG("new minor assigned %d\n", minor_id); | |
342 | return 0; | |
343 | ||
344 | ||
345 | err_g2: | |
346 | if (new_minor->type == DRM_MINOR_LEGACY) | |
347 | drm_proc_cleanup(new_minor, drm_proc_root); | |
348 | err_mem: | |
349 | kfree(new_minor); | |
350 | err_idr: | |
351 | idr_remove(&drm_minors_idr, minor_id); | |
352 | *minor = NULL; | |
1da177e4 LT |
353 | return ret; |
354 | } | |
b5e89ed5 | 355 | |
c94f7029 DA |
356 | /** |
357 | * Register. | |
358 | * | |
359 | * \param pdev - PCI device structure | |
360 | * \param ent entry from the PCI ID table with device type flags | |
361 | * \return zero on success or a negative number on failure. | |
362 | * | |
363 | * Attempt to gets inter module "drm" information. If we are first | |
364 | * then register the character device and inter module information. | |
365 | * Try and register, if we fail to register, backout previous work. | |
366 | */ | |
367 | int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent, | |
b5e89ed5 | 368 | struct drm_driver *driver) |
c94f7029 | 369 | { |
84b1fd10 | 370 | struct drm_device *dev; |
c94f7029 DA |
371 | int ret; |
372 | ||
373 | DRM_DEBUG("\n"); | |
374 | ||
375 | dev = drm_calloc(1, sizeof(*dev), DRM_MEM_STUB); | |
376 | if (!dev) | |
377 | return -ENOMEM; | |
378 | ||
2c3f0edd JG |
379 | ret = pci_enable_device(pdev); |
380 | if (ret) | |
381 | goto err_g1; | |
c94f7029 | 382 | |
19a8f59a | 383 | pci_set_master(pdev); |
c94f7029 DA |
384 | if ((ret = drm_fill_in_dev(dev, pdev, ent, driver))) { |
385 | printk(KERN_ERR "DRM: Fill_in_dev failed.\n"); | |
2c3f0edd | 386 | goto err_g2; |
c94f7029 | 387 | } |
f453ba04 DA |
388 | |
389 | if (drm_core_check_feature(dev, DRIVER_MODESET)) { | |
112b715e | 390 | pci_set_drvdata(pdev, dev); |
f453ba04 DA |
391 | ret = drm_get_minor(dev, &dev->control, DRM_MINOR_CONTROL); |
392 | if (ret) | |
393 | goto err_g2; | |
394 | } | |
395 | ||
2c14f28b | 396 | if ((ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY))) |
f453ba04 | 397 | goto err_g3; |
bc5f4523 | 398 | |
f453ba04 DA |
399 | if (dev->driver->load) { |
400 | ret = dev->driver->load(dev, ent->driver_data); | |
401 | if (ret) | |
a9d51a5a | 402 | goto err_g3; |
f453ba04 DA |
403 | } |
404 | ||
405 | /* setup the grouping for the legacy output */ | |
406 | if (drm_core_check_feature(dev, DRIVER_MODESET)) { | |
407 | ret = drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group); | |
408 | if (ret) | |
409 | goto err_g3; | |
410 | } | |
a9d51a5a | 411 | |
e7f7ab45 DA |
412 | list_add_tail(&dev->driver_item, &driver->device_list); |
413 | ||
cd00f95a | 414 | DRM_INFO("Initialized %s %d.%d.%d %s for %s on minor %d\n", |
22eae947 | 415 | driver->name, driver->major, driver->minor, driver->patchlevel, |
cd00f95a | 416 | driver->date, pci_name(pdev), dev->primary->index); |
c94f7029 DA |
417 | |
418 | return 0; | |
419 | ||
a9d51a5a DA |
420 | err_g3: |
421 | drm_put_minor(&dev->primary); | |
2c3f0edd JG |
422 | err_g2: |
423 | pci_disable_device(pdev); | |
424 | err_g1: | |
c94f7029 DA |
425 | drm_free(dev, sizeof(*dev), DRM_MEM_STUB); |
426 | return ret; | |
427 | } | |
112b715e | 428 | EXPORT_SYMBOL(drm_get_dev); |
1da177e4 LT |
429 | |
430 | /** | |
431 | * Put a secondary minor number. | |
432 | * | |
433 | * \param sec_minor - structure to be released | |
434 | * \return always zero | |
435 | * | |
436 | * Cleans up the proc resources. Not legal for this to be the | |
437 | * last minor released. | |
438 | * | |
439 | */ | |
2c14f28b | 440 | int drm_put_minor(struct drm_minor **minor_p) |
1da177e4 | 441 | { |
2c14f28b | 442 | struct drm_minor *minor = *minor_p; |
673a394b | 443 | |
2c14f28b | 444 | DRM_DEBUG("release secondary minor %d\n", minor->index); |
b5e89ed5 | 445 | |
2c14f28b DA |
446 | if (minor->type == DRM_MINOR_LEGACY) |
447 | drm_proc_cleanup(minor, drm_proc_root); | |
955b12de BG |
448 | #if defined(CONFIG_DEBUG_FS) |
449 | drm_debugfs_cleanup(minor); | |
450 | #endif | |
451 | ||
2c14f28b | 452 | drm_sysfs_device_remove(minor); |
1da177e4 | 453 | |
2c14f28b | 454 | idr_remove(&drm_minors_idr, minor->index); |
b5e89ed5 | 455 | |
2c14f28b DA |
456 | kfree(minor); |
457 | *minor_p = NULL; | |
1da177e4 LT |
458 | return 0; |
459 | } | |
112b715e KH |
460 | |
461 | /** | |
462 | * Called via drm_exit() at module unload time or when pci device is | |
463 | * unplugged. | |
464 | * | |
465 | * Cleans up all DRM device, calling drm_lastclose(). | |
466 | * | |
467 | * \sa drm_init | |
468 | */ | |
469 | void drm_put_dev(struct drm_device *dev) | |
470 | { | |
471 | struct drm_driver *driver = dev->driver; | |
472 | struct drm_map_list *r_list, *list_temp; | |
473 | ||
474 | DRM_DEBUG("\n"); | |
475 | ||
476 | if (!dev) { | |
477 | DRM_ERROR("cleanup called no dev\n"); | |
478 | return; | |
479 | } | |
480 | ||
481 | drm_vblank_cleanup(dev); | |
482 | ||
483 | drm_lastclose(dev); | |
484 | ||
485 | if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) && | |
486 | dev->agp && dev->agp->agp_mtrr >= 0) { | |
487 | int retval; | |
488 | retval = mtrr_del(dev->agp->agp_mtrr, | |
489 | dev->agp->agp_info.aper_base, | |
490 | dev->agp->agp_info.aper_size * 1024 * 1024); | |
491 | DRM_DEBUG("mtrr_del=%d\n", retval); | |
492 | } | |
493 | ||
494 | if (dev->driver->unload) | |
495 | dev->driver->unload(dev); | |
496 | ||
497 | if (drm_core_has_AGP(dev) && dev->agp) { | |
498 | drm_free(dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS); | |
499 | dev->agp = NULL; | |
500 | } | |
501 | ||
502 | drm_ht_remove(&dev->map_hash); | |
503 | drm_ctxbitmap_cleanup(dev); | |
504 | ||
505 | list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) | |
506 | drm_rmmap(dev, r_list->map); | |
507 | ||
508 | if (drm_core_check_feature(dev, DRIVER_MODESET)) | |
509 | drm_put_minor(&dev->control); | |
510 | ||
511 | if (driver->driver_features & DRIVER_GEM) | |
512 | drm_gem_destroy(dev); | |
513 | ||
514 | drm_put_minor(&dev->primary); | |
515 | ||
516 | if (dev->devname) { | |
517 | drm_free(dev->devname, strlen(dev->devname) + 1, | |
518 | DRM_MEM_DRIVER); | |
519 | dev->devname = NULL; | |
520 | } | |
521 | drm_free(dev, sizeof(*dev), DRM_MEM_STUB); | |
522 | } | |
523 | EXPORT_SYMBOL(drm_put_dev); |