5 * \author Rickard E. (Rik) Faith <faith@valinux.com>
9 * Created: Fri Jan 19 10:48:35 2001 by faith@acm.org
11 * Copyright 2001 VA Linux Systems, Inc., Sunnyvale, California.
12 * All Rights Reserved.
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:
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
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.
34 #include <linux/module.h>
35 #include <linux/moduleparam.h>
36 #include <linux/slab.h>
40 unsigned int drm_debug = 0; /* 1 to enable debug output */
41 EXPORT_SYMBOL(drm_debug);
43 unsigned int drm_vblank_offdelay = 5000; /* Default to 5000 msecs. */
44 EXPORT_SYMBOL(drm_vblank_offdelay);
46 unsigned int drm_timestamp_precision = 20; /* Default to 20 usecs. */
47 EXPORT_SYMBOL(drm_timestamp_precision);
49 MODULE_AUTHOR(CORE_AUTHOR);
50 MODULE_DESCRIPTION(CORE_DESC);
51 MODULE_LICENSE("GPL and additional rights");
52 MODULE_PARM_DESC(debug, "Enable debug output");
53 MODULE_PARM_DESC(vblankoffdelay, "Delay until vblank irq auto-disable [msecs]");
54 MODULE_PARM_DESC(timestamp_precision_usec, "Max. error on timestamps [usecs]");
56 module_param_named(debug, drm_debug, int, 0600);
57 module_param_named(vblankoffdelay, drm_vblank_offdelay, int, 0600);
58 module_param_named(timestamp_precision_usec, drm_timestamp_precision, int, 0600);
60 struct idr drm_minors_idr;
62 struct class *drm_class;
63 struct proc_dir_entry *drm_proc_root;
64 struct dentry *drm_debugfs_root;
66 int drm_err(const char *func, const char *format, ...)
72 va_start(args, format);
77 r = printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* %pV", func, &vaf);
83 EXPORT_SYMBOL(drm_err);
85 void drm_ut_debug_printk(unsigned int request_level,
87 const char *function_name,
88 const char *format, ...)
92 if (drm_debug & request_level) {
94 printk(KERN_DEBUG "[%s:%s], ", prefix, function_name);
95 va_start(args, format);
96 vprintk(format, args);
100 EXPORT_SYMBOL(drm_ut_debug_printk);
102 static int drm_minor_get_id(struct drm_device *dev, int type)
106 int base = 0, limit = 63;
108 if (type == DRM_MINOR_CONTROL) {
111 } else if (type == DRM_MINOR_RENDER) {
117 if (idr_pre_get(&drm_minors_idr, GFP_KERNEL) == 0) {
118 DRM_ERROR("Out of memory expanding drawable idr\n");
121 mutex_lock(&dev->struct_mutex);
122 ret = idr_get_new_above(&drm_minors_idr, NULL,
124 mutex_unlock(&dev->struct_mutex);
130 if (new_id >= limit) {
131 idr_remove(&drm_minors_idr, new_id);
137 struct drm_master *drm_master_create(struct drm_minor *minor)
139 struct drm_master *master;
141 master = kzalloc(sizeof(*master), GFP_KERNEL);
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;
152 list_add_tail(&master->head, &minor->master_list);
157 struct drm_master *drm_master_get(struct drm_master *master)
159 kref_get(&master->refcount);
162 EXPORT_SYMBOL(drm_master_get);
164 static void drm_master_destroy(struct kref *kref)
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;
169 struct drm_map_list *r_list, *list_temp;
171 list_del(&master->head);
173 if (dev->driver->master_destroy)
174 dev->driver->master_destroy(dev, master);
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);
183 if (master->unique) {
184 kfree(master->unique);
185 master->unique = NULL;
186 master->unique_len = 0;
192 list_for_each_entry_safe(pt, next, &master->magicfree, head) {
194 drm_ht_remove_item(&master->magiclist, &pt->hash_item);
198 drm_ht_remove(&master->magiclist);
203 void drm_master_put(struct drm_master **master)
205 kref_put(&(*master)->refcount, drm_master_destroy);
208 EXPORT_SYMBOL(drm_master_put);
210 int drm_setmaster_ioctl(struct drm_device *dev, void *data,
211 struct drm_file *file_priv)
215 if (file_priv->is_master)
218 if (file_priv->minor->master && file_priv->minor->master != file_priv->master)
221 if (!file_priv->master)
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);
228 file_priv->is_master = 1;
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);
236 mutex_unlock(&dev->struct_mutex);
242 int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
243 struct drm_file *file_priv)
245 if (!file_priv->is_master)
248 if (!file_priv->minor->master)
251 mutex_lock(&dev->struct_mutex);
252 if (dev->driver->master_drop)
253 dev->driver->master_drop(dev, file_priv, false);
254 drm_master_put(&file_priv->minor->master);
255 file_priv->is_master = 0;
256 mutex_unlock(&dev->struct_mutex);
260 int drm_fill_in_dev(struct drm_device *dev,
261 const struct pci_device_id *ent,
262 struct drm_driver *driver)
266 INIT_LIST_HEAD(&dev->filelist);
267 INIT_LIST_HEAD(&dev->ctxlist);
268 INIT_LIST_HEAD(&dev->vmalist);
269 INIT_LIST_HEAD(&dev->maplist);
270 INIT_LIST_HEAD(&dev->vblank_event_list);
272 spin_lock_init(&dev->count_lock);
273 spin_lock_init(&dev->event_lock);
274 mutex_init(&dev->struct_mutex);
275 mutex_init(&dev->ctxlist_mutex);
277 if (drm_ht_create(&dev->map_hash, 12)) {
281 /* the DRM has 6 basic counters */
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;
290 dev->driver = driver;
292 if (dev->driver->bus->agp_init) {
293 retcode = dev->driver->bus->agp_init(dev);
295 goto error_out_unreg;
300 retcode = drm_ctxbitmap_init(dev);
302 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
303 goto error_out_unreg;
306 if (driver->driver_features & DRIVER_GEM) {
307 retcode = drm_gem_init(dev);
309 DRM_ERROR("Cannot initialize graphics execution "
311 goto error_out_unreg;
321 EXPORT_SYMBOL(drm_fill_in_dev);
325 * Get a secondary minor number.
327 * \param dev device data structure
328 * \param sec-minor structure to hold the assigned minor
329 * \return negative number on failure.
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
335 int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type)
337 struct drm_minor *new_minor;
343 minor_id = drm_minor_get_id(dev, type);
347 new_minor = kzalloc(sizeof(struct drm_minor), GFP_KERNEL);
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;
357 INIT_LIST_HEAD(&new_minor->master_list);
359 idr_replace(&drm_minors_idr, new_minor, minor_id);
361 if (type == DRM_MINOR_LEGACY) {
362 ret = drm_proc_init(new_minor, minor_id, drm_proc_root);
364 DRM_ERROR("DRM: Failed to initialize /proc/dri.\n");
368 new_minor->proc_root = NULL;
370 #if defined(CONFIG_DEBUG_FS)
371 ret = drm_debugfs_init(new_minor, minor_id, drm_debugfs_root);
373 DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
378 ret = drm_sysfs_device_add(new_minor);
381 "DRM: Error sysfs_device_add.\n");
386 DRM_DEBUG("new minor assigned %d\n", minor_id);
391 if (new_minor->type == DRM_MINOR_LEGACY)
392 drm_proc_cleanup(new_minor, drm_proc_root);
396 idr_remove(&drm_minors_idr, minor_id);
400 EXPORT_SYMBOL(drm_get_minor);
403 * Put a secondary minor number.
405 * \param sec_minor - structure to be released
406 * \return always zero
408 * Cleans up the proc resources. Not legal for this to be the
409 * last minor released.
412 int drm_put_minor(struct drm_minor **minor_p)
414 struct drm_minor *minor = *minor_p;
416 DRM_DEBUG("release secondary minor %d\n", minor->index);
418 if (minor->type == DRM_MINOR_LEGACY)
419 drm_proc_cleanup(minor, drm_proc_root);
420 #if defined(CONFIG_DEBUG_FS)
421 drm_debugfs_cleanup(minor);
424 drm_sysfs_device_remove(minor);
426 idr_remove(&drm_minors_idr, minor->index);
432 EXPORT_SYMBOL(drm_put_minor);
434 static void drm_unplug_minor(struct drm_minor *minor)
436 drm_sysfs_device_remove(minor);
440 * Called via drm_exit() at module unload time or when pci device is
443 * Cleans up all DRM device, calling drm_lastclose().
446 void drm_put_dev(struct drm_device *dev)
448 struct drm_driver *driver;
449 struct drm_map_list *r_list, *list_temp;
454 DRM_ERROR("cleanup called no dev\n");
457 driver = dev->driver;
461 if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) &&
462 dev->agp && dev->agp->agp_mtrr >= 0) {
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);
470 if (dev->driver->unload)
471 dev->driver->unload(dev);
473 if (drm_core_has_AGP(dev) && dev->agp) {
478 drm_vblank_cleanup(dev);
480 list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head)
481 drm_rmmap(dev, r_list->map);
482 drm_ht_remove(&dev->map_hash);
484 drm_ctxbitmap_cleanup(dev);
486 if (drm_core_check_feature(dev, DRIVER_MODESET))
487 drm_put_minor(&dev->control);
489 if (driver->driver_features & DRIVER_GEM)
490 drm_gem_destroy(dev);
492 drm_put_minor(&dev->primary);
494 list_del(&dev->driver_item);
501 EXPORT_SYMBOL(drm_put_dev);
503 void drm_unplug_dev(struct drm_device *dev)
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);
510 mutex_lock(&drm_global_mutex);
512 drm_device_set_unplugged(dev);
514 if (dev->open_count == 0) {
517 mutex_unlock(&drm_global_mutex);
519 EXPORT_SYMBOL(drm_unplug_dev);