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>
39 unsigned int drm_debug = 0; /* 1 to enable debug output */
40 EXPORT_SYMBOL(drm_debug);
42 MODULE_AUTHOR(CORE_AUTHOR);
43 MODULE_DESCRIPTION(CORE_DESC);
44 MODULE_LICENSE("GPL and additional rights");
45 MODULE_PARM_DESC(debug, "Enable debug output");
47 module_param_named(debug, drm_debug, int, 0600);
49 struct idr drm_minors_idr;
51 struct class *drm_class;
52 struct proc_dir_entry *drm_proc_root;
53 struct dentry *drm_debugfs_root;
54 void drm_ut_debug_printk(unsigned int request_level,
56 const char *function_name,
57 const char *format, ...)
61 if (drm_debug & request_level) {
63 printk(KERN_DEBUG "[%s:%s], ", prefix, function_name);
64 va_start(args, format);
65 vprintk(format, args);
69 EXPORT_SYMBOL(drm_ut_debug_printk);
70 static int drm_minor_get_id(struct drm_device *dev, int type)
74 int base = 0, limit = 63;
76 if (type == DRM_MINOR_CONTROL) {
79 } else if (type == DRM_MINOR_RENDER) {
85 if (idr_pre_get(&drm_minors_idr, GFP_KERNEL) == 0) {
86 DRM_ERROR("Out of memory expanding drawable idr\n");
89 mutex_lock(&dev->struct_mutex);
90 ret = idr_get_new_above(&drm_minors_idr, NULL,
92 mutex_unlock(&dev->struct_mutex);
99 if (new_id >= limit) {
100 idr_remove(&drm_minors_idr, new_id);
106 struct drm_master *drm_master_create(struct drm_minor *minor)
108 struct drm_master *master;
110 master = kzalloc(sizeof(*master), GFP_KERNEL);
114 kref_init(&master->refcount);
115 spin_lock_init(&master->lock.spinlock);
116 init_waitqueue_head(&master->lock.lock_queue);
117 drm_ht_create(&master->magiclist, DRM_MAGIC_HASH_ORDER);
118 INIT_LIST_HEAD(&master->magicfree);
119 master->minor = minor;
121 list_add_tail(&master->head, &minor->master_list);
126 struct drm_master *drm_master_get(struct drm_master *master)
128 kref_get(&master->refcount);
132 static void drm_master_destroy(struct kref *kref)
134 struct drm_master *master = container_of(kref, struct drm_master, refcount);
135 struct drm_magic_entry *pt, *next;
136 struct drm_device *dev = master->minor->dev;
137 struct drm_map_list *r_list, *list_temp;
139 list_del(&master->head);
141 if (dev->driver->master_destroy)
142 dev->driver->master_destroy(dev, master);
144 list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) {
145 if (r_list->master == master) {
146 drm_rmmap_locked(dev, r_list->map);
151 if (master->unique) {
152 kfree(master->unique);
153 master->unique = NULL;
154 master->unique_len = 0;
157 list_for_each_entry_safe(pt, next, &master->magicfree, head) {
159 drm_ht_remove_item(&master->magiclist, &pt->hash_item);
163 drm_ht_remove(&master->magiclist);
168 void drm_master_put(struct drm_master **master)
170 kref_put(&(*master)->refcount, drm_master_destroy);
174 int drm_setmaster_ioctl(struct drm_device *dev, void *data,
175 struct drm_file *file_priv)
177 if (file_priv->is_master)
180 if (file_priv->minor->master && file_priv->minor->master != file_priv->master)
183 if (!file_priv->master)
186 if (!file_priv->minor->master &&
187 file_priv->minor->master != file_priv->master) {
188 mutex_lock(&dev->struct_mutex);
189 file_priv->minor->master = drm_master_get(file_priv->master);
190 file_priv->is_master = 1;
191 mutex_unlock(&dev->struct_mutex);
197 int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
198 struct drm_file *file_priv)
200 if (!file_priv->is_master)
203 if (!file_priv->minor->master)
206 mutex_lock(&dev->struct_mutex);
207 drm_master_put(&file_priv->minor->master);
208 file_priv->is_master = 0;
209 mutex_unlock(&dev->struct_mutex);
213 static int drm_fill_in_dev(struct drm_device * dev, struct pci_dev *pdev,
214 const struct pci_device_id *ent,
215 struct drm_driver *driver)
219 INIT_LIST_HEAD(&dev->filelist);
220 INIT_LIST_HEAD(&dev->ctxlist);
221 INIT_LIST_HEAD(&dev->vmalist);
222 INIT_LIST_HEAD(&dev->maplist);
224 spin_lock_init(&dev->count_lock);
225 spin_lock_init(&dev->drw_lock);
226 init_timer(&dev->timer);
227 mutex_init(&dev->struct_mutex);
228 mutex_init(&dev->ctxlist_mutex);
230 idr_init(&dev->drw_idr);
233 dev->pci_device = pdev->device;
234 dev->pci_vendor = pdev->vendor;
237 dev->hose = pdev->sysdata;
240 if (drm_ht_create(&dev->map_hash, 12)) {
244 /* the DRM has 6 basic counters */
246 dev->types[0] = _DRM_STAT_LOCK;
247 dev->types[1] = _DRM_STAT_OPENS;
248 dev->types[2] = _DRM_STAT_CLOSES;
249 dev->types[3] = _DRM_STAT_IOCTLS;
250 dev->types[4] = _DRM_STAT_LOCKS;
251 dev->types[5] = _DRM_STAT_UNLOCKS;
253 dev->driver = driver;
255 if (drm_core_has_AGP(dev)) {
256 if (drm_device_is_agp(dev))
257 dev->agp = drm_agp_init(dev);
258 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP)
259 && (dev->agp == NULL)) {
260 DRM_ERROR("Cannot initialize the agpgart module.\n");
262 goto error_out_unreg;
264 if (drm_core_has_MTRR(dev)) {
267 mtrr_add(dev->agp->agp_info.aper_base,
268 dev->agp->agp_info.aper_size *
269 1024 * 1024, MTRR_TYPE_WRCOMB, 1);
274 retcode = drm_ctxbitmap_init(dev);
276 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
277 goto error_out_unreg;
280 if (driver->driver_features & DRIVER_GEM) {
281 retcode = drm_gem_init(dev);
283 DRM_ERROR("Cannot initialize graphics execution "
285 goto error_out_unreg;
298 * Get a secondary minor number.
300 * \param dev device data structure
301 * \param sec-minor structure to hold the assigned minor
302 * \return negative number on failure.
304 * Search an empty entry and initialize it to the given parameters, and
305 * create the proc init entry via proc_init(). This routines assigns
306 * minor numbers to secondary heads of multi-headed cards
308 static int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type)
310 struct drm_minor *new_minor;
316 minor_id = drm_minor_get_id(dev, type);
320 new_minor = kzalloc(sizeof(struct drm_minor), GFP_KERNEL);
326 new_minor->type = type;
327 new_minor->device = MKDEV(DRM_MAJOR, minor_id);
328 new_minor->dev = dev;
329 new_minor->index = minor_id;
330 INIT_LIST_HEAD(&new_minor->master_list);
332 idr_replace(&drm_minors_idr, new_minor, minor_id);
334 if (type == DRM_MINOR_LEGACY) {
335 ret = drm_proc_init(new_minor, minor_id, drm_proc_root);
337 DRM_ERROR("DRM: Failed to initialize /proc/dri.\n");
341 new_minor->proc_root = NULL;
343 #if defined(CONFIG_DEBUG_FS)
344 ret = drm_debugfs_init(new_minor, minor_id, drm_debugfs_root);
346 DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
351 ret = drm_sysfs_device_add(new_minor);
354 "DRM: Error sysfs_device_add.\n");
359 DRM_DEBUG("new minor assigned %d\n", minor_id);
364 if (new_minor->type == DRM_MINOR_LEGACY)
365 drm_proc_cleanup(new_minor, drm_proc_root);
369 idr_remove(&drm_minors_idr, minor_id);
377 * \param pdev - PCI device structure
378 * \param ent entry from the PCI ID table with device type flags
379 * \return zero on success or a negative number on failure.
381 * Attempt to gets inter module "drm" information. If we are first
382 * then register the character device and inter module information.
383 * Try and register, if we fail to register, backout previous work.
385 int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
386 struct drm_driver *driver)
388 struct drm_device *dev;
393 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
397 ret = pci_enable_device(pdev);
401 pci_set_master(pdev);
402 if ((ret = drm_fill_in_dev(dev, pdev, ent, driver))) {
403 printk(KERN_ERR "DRM: Fill_in_dev failed.\n");
407 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
408 pci_set_drvdata(pdev, dev);
409 ret = drm_get_minor(dev, &dev->control, DRM_MINOR_CONTROL);
414 if ((ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY)))
417 if (dev->driver->load) {
418 ret = dev->driver->load(dev, ent->driver_data);
423 /* setup the grouping for the legacy output */
424 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
425 ret = drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
430 list_add_tail(&dev->driver_item, &driver->device_list);
432 DRM_INFO("Initialized %s %d.%d.%d %s for %s on minor %d\n",
433 driver->name, driver->major, driver->minor, driver->patchlevel,
434 driver->date, pci_name(pdev), dev->primary->index);
439 drm_put_minor(&dev->primary);
441 if (drm_core_check_feature(dev, DRIVER_MODESET))
442 drm_put_minor(&dev->control);
444 pci_disable_device(pdev);
449 EXPORT_SYMBOL(drm_get_dev);
452 * Put a secondary minor number.
454 * \param sec_minor - structure to be released
455 * \return always zero
457 * Cleans up the proc resources. Not legal for this to be the
458 * last minor released.
461 int drm_put_minor(struct drm_minor **minor_p)
463 struct drm_minor *minor = *minor_p;
465 DRM_DEBUG("release secondary minor %d\n", minor->index);
467 if (minor->type == DRM_MINOR_LEGACY)
468 drm_proc_cleanup(minor, drm_proc_root);
469 #if defined(CONFIG_DEBUG_FS)
470 drm_debugfs_cleanup(minor);
473 drm_sysfs_device_remove(minor);
475 idr_remove(&drm_minors_idr, minor->index);
483 * Called via drm_exit() at module unload time or when pci device is
486 * Cleans up all DRM device, calling drm_lastclose().
490 void drm_put_dev(struct drm_device *dev)
492 struct drm_driver *driver = dev->driver;
493 struct drm_map_list *r_list, *list_temp;
498 DRM_ERROR("cleanup called no dev\n");
502 drm_vblank_cleanup(dev);
506 if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) &&
507 dev->agp && dev->agp->agp_mtrr >= 0) {
509 retval = mtrr_del(dev->agp->agp_mtrr,
510 dev->agp->agp_info.aper_base,
511 dev->agp->agp_info.aper_size * 1024 * 1024);
512 DRM_DEBUG("mtrr_del=%d\n", retval);
515 if (dev->driver->unload)
516 dev->driver->unload(dev);
518 if (drm_core_has_AGP(dev) && dev->agp) {
523 list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head)
524 drm_rmmap(dev, r_list->map);
525 drm_ht_remove(&dev->map_hash);
527 drm_ctxbitmap_cleanup(dev);
529 if (drm_core_check_feature(dev, DRIVER_MODESET))
530 drm_put_minor(&dev->control);
532 if (driver->driver_features & DRIVER_GEM)
533 drm_gem_destroy(dev);
535 drm_put_minor(&dev->primary);
543 EXPORT_SYMBOL(drm_put_dev);