2 * Created: Fri Jan 19 10:48:35 2001 by faith@acm.org
4 * Copyright 2001 VA Linux Systems, Inc., Sunnyvale, California.
7 * Author Rickard E. (Rik) Faith <faith@valinux.com>
9 * Permission is hereby granted, free of charge, to any person obtaining a
10 * copy of this software and associated documentation files (the "Software"),
11 * to deal in the Software without restriction, including without limitation
12 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
13 * and/or sell copies of the Software, and to permit persons to whom the
14 * Software is furnished to do so, subject to the following conditions:
16 * The above copyright notice and this permission notice (including the next
17 * paragraph) shall be included in all copies or substantial portions of the
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
23 * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
24 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
25 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
26 * DEALINGS IN THE SOFTWARE.
29 #include <linux/module.h>
30 #include <linux/moduleparam.h>
32 #include <drm/drm_core.h>
33 #include "drm_legacy.h"
34 #include "drm_internal.h"
36 /* Provides three levels of debug: off, minimal, verbose */
38 #if DRM_DEBUG_DEFAULT_ON == 1
39 #define DRM_DEBUGBITS_ON (DRM_UT_CORE | DRM_UT_DRIVER | DRM_UT_KMS | \
40 DRM_UT_PRIME| DRM_UT_ATOMIC | DRM_UT_FIOCTL)
41 #elif DRM_DEBUG_DEFAULT_ON == 2
42 #define DRM_DEBUGBITS_ON (DRM_UT_CORE | DRM_UT_DRIVER | DRM_UT_KMS | \
43 DRM_UT_PRIME| DRM_UT_ATOMIC | DRM_UT_FIOCTL | \
44 DRM_UT_PID | DRM_UT_IOCTL | DRM_UT_VBLANK)
46 #define DRM_DEBUGBITS_ON (0x0)
48 unsigned int drm_debug = DRM_DEBUGBITS_ON; /* defaults to 0 */
50 unsigned int drm_debug = 0; /* 1 to enable debug output */
51 #endif /* __DragonFly__ */
52 EXPORT_SYMBOL(drm_debug);
54 MODULE_AUTHOR(CORE_AUTHOR);
55 MODULE_DESCRIPTION(CORE_DESC);
56 MODULE_PARM_DESC(debug, "Enable debug output");
57 MODULE_PARM_DESC(vblankoffdelay, "Delay until vblank irq auto-disable [msecs] (0: never disable, <0: disable immediately)");
58 MODULE_PARM_DESC(timestamp_precision_usec, "Max. error on timestamps [usecs]");
59 MODULE_PARM_DESC(timestamp_monotonic, "Use monotonic timestamps");
61 module_param_named(debug, drm_debug, int, 0600);
64 static DEFINE_SPINLOCK(drm_minor_lock);
65 static struct idr drm_minors_idr;
68 struct class *drm_class;
70 static struct dentry *drm_debugfs_root;
73 void drm_err(const char *func, const char *format, ...)
77 kprintf("error: [" DRM_NAME ":pid%d:%s] *ERROR* ", DRM_CURRENTPID, func);
79 __va_start(args, format);
80 kvprintf(format, args);
83 EXPORT_SYMBOL(drm_err);
85 void drm_ut_debug_printk(const char *function_name, const char *format, ...)
89 if (unlikely(drm_debug & DRM_UT_PID)) {
90 kprintf("[" DRM_NAME ":pid%d:%s] ",
91 DRM_CURRENTPID, function_name);
93 kprintf("[" DRM_NAME ":%s] ", function_name);
96 __va_start(args, format);
97 kvprintf(format, args);
100 EXPORT_SYMBOL(drm_ut_debug_printk);
103 struct drm_master *drm_master_create(struct drm_minor *minor)
105 struct drm_master *master;
107 master = kzalloc(sizeof(*master), GFP_KERNEL);
111 kref_init(&master->refcount);
112 spin_lock_init(&master->lock.spinlock);
113 init_waitqueue_head(&master->lock.lock_queue);
114 if (drm_ht_create(&master->magiclist, DRM_MAGIC_HASH_ORDER)) {
118 master->minor = minor;
123 struct drm_master *drm_master_get(struct drm_master *master)
125 kref_get(&master->refcount);
128 EXPORT_SYMBOL(drm_master_get);
130 static void drm_master_destroy(struct kref *kref)
132 struct drm_master *master = container_of(kref, struct drm_master, refcount);
133 struct drm_device *dev = master->minor->dev;
134 struct drm_map_list *r_list, *list_temp;
136 mutex_lock(&dev->struct_mutex);
137 if (dev->driver->master_destroy)
138 dev->driver->master_destroy(dev, master);
140 list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) {
141 if (r_list->master == master) {
142 drm_legacy_rmmap_locked(dev, r_list->map);
147 if (master->unique) {
148 kfree(master->unique);
149 master->unique = NULL;
150 master->unique_len = 0;
153 drm_ht_remove(&master->magiclist);
155 mutex_unlock(&dev->struct_mutex);
159 void drm_master_put(struct drm_master **master)
161 kref_put(&(*master)->refcount, drm_master_destroy);
164 EXPORT_SYMBOL(drm_master_put);
167 int drm_setmaster_ioctl(struct drm_device *dev, void *data,
168 struct drm_file *file_priv)
170 DRM_DEBUG("setmaster\n");
172 if (file_priv->master != 0)
178 int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
179 struct drm_file *file_priv)
181 DRM_DEBUG("dropmaster\n");
182 if (file_priv->master != 0)
190 * A DRM device can provide several char-dev interfaces on the DRM-Major. Each
191 * of them is represented by a drm_minor object. Depending on the capabilities
192 * of the device-driver, different interfaces are registered.
194 * Minors can be accessed via dev->$minor_name. This pointer is either
195 * NULL or a valid drm_minor pointer and stays valid as long as the device is
196 * valid. This means, DRM minors have the same life-time as the underlying
197 * device. However, this doesn't mean that the minor is active. Minors are
198 * registered and unregistered dynamically according to device-state.
201 static struct drm_minor **drm_minor_get_slot(struct drm_device *dev,
205 case DRM_MINOR_LEGACY:
206 return &dev->primary;
207 case DRM_MINOR_RENDER:
209 case DRM_MINOR_CONTROL:
210 return &dev->control;
216 static int drm_minor_alloc(struct drm_device *dev, unsigned int type)
218 struct drm_minor *minor;
222 minor = kzalloc(sizeof(*minor), GFP_KERNEL);
229 idr_preload(GFP_KERNEL);
230 spin_lock_irqsave(&drm_minor_lock, flags);
231 r = idr_alloc(&drm_minors_idr,
236 spin_unlock_irqrestore(&drm_minor_lock, flags);
244 minor->kdev = drm_sysfs_minor_alloc(minor);
245 if (IS_ERR(minor->kdev)) {
246 r = PTR_ERR(minor->kdev);
250 *drm_minor_get_slot(dev, type) = minor;
254 spin_lock_irqsave(&drm_minor_lock, flags);
255 idr_remove(&drm_minors_idr, minor->index);
256 spin_unlock_irqrestore(&drm_minor_lock, flags);
262 static void drm_minor_free(struct drm_device *dev, unsigned int type)
264 struct drm_minor **slot, *minor;
267 slot = drm_minor_get_slot(dev, type);
272 put_device(minor->kdev);
274 spin_lock_irqsave(&drm_minor_lock, flags);
275 idr_remove(&drm_minors_idr, minor->index);
276 spin_unlock_irqrestore(&drm_minor_lock, flags);
282 static int drm_minor_register(struct drm_device *dev, unsigned int type)
284 struct drm_minor *minor;
290 minor = *drm_minor_get_slot(dev, type);
294 ret = drm_debugfs_init(minor, minor->index, drm_debugfs_root);
296 DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
300 ret = device_add(minor->kdev);
304 /* replace NULL with @minor so lookups will succeed from now on */
305 spin_lock_irqsave(&drm_minor_lock, flags);
306 idr_replace(&drm_minors_idr, minor, minor->index);
307 spin_unlock_irqrestore(&drm_minor_lock, flags);
309 DRM_DEBUG("new minor registered %d\n", minor->index);
313 drm_debugfs_cleanup(minor);
317 static void drm_minor_unregister(struct drm_device *dev, unsigned int type)
319 struct drm_minor *minor;
322 minor = *drm_minor_get_slot(dev, type);
323 if (!minor || !device_is_registered(minor->kdev))
326 /* replace @minor with NULL so lookups will fail from now on */
327 spin_lock_irqsave(&drm_minor_lock, flags);
328 idr_replace(&drm_minors_idr, NULL, minor->index);
329 spin_unlock_irqrestore(&drm_minor_lock, flags);
331 device_del(minor->kdev);
332 dev_set_drvdata(minor->kdev, NULL); /* safety belt */
333 drm_debugfs_cleanup(minor);
337 * drm_minor_acquire - Acquire a DRM minor
338 * @minor_id: Minor ID of the DRM-minor
340 * Looks up the given minor-ID and returns the respective DRM-minor object. The
341 * refence-count of the underlying device is increased so you must release this
342 * object with drm_minor_release().
344 * As long as you hold this minor, it is guaranteed that the object and the
345 * minor->dev pointer will stay valid! However, the device may get unplugged and
346 * unregistered while you hold the minor.
349 * Pointer to minor-object with increased device-refcount, or PTR_ERR on
352 struct drm_minor *drm_minor_acquire(unsigned int minor_id)
354 struct drm_minor *minor;
357 spin_lock_irqsave(&drm_minor_lock, flags);
358 minor = idr_find(&drm_minors_idr, minor_id);
360 drm_dev_ref(minor->dev);
361 spin_unlock_irqrestore(&drm_minor_lock, flags);
364 return ERR_PTR(-ENODEV);
365 } else if (drm_device_is_unplugged(minor->dev)) {
366 drm_dev_unref(minor->dev);
367 return ERR_PTR(-ENODEV);
374 * drm_minor_release - Release DRM minor
375 * @minor: Pointer to DRM minor object
377 * Release a minor that was previously acquired via drm_minor_acquire().
379 void drm_minor_release(struct drm_minor *minor)
381 drm_dev_unref(minor->dev);
385 * drm_put_dev - Unregister and release a DRM device
388 * Called at module unload time or when a PCI device is unplugged.
390 * Use of this function is discouraged. It will eventually go away completely.
391 * Please use drm_dev_unregister() and drm_dev_unref() explicitly instead.
393 * Cleans up all DRM device, calling drm_lastclose().
395 void drm_put_dev(struct drm_device *dev)
400 DRM_ERROR("cleanup called no dev\n");
404 drm_dev_unregister(dev);
407 EXPORT_SYMBOL(drm_put_dev);
409 void drm_unplug_dev(struct drm_device *dev)
411 /* for a USB device */
412 drm_minor_unregister(dev, DRM_MINOR_LEGACY);
413 drm_minor_unregister(dev, DRM_MINOR_RENDER);
414 drm_minor_unregister(dev, DRM_MINOR_CONTROL);
416 mutex_lock(&drm_global_mutex);
418 drm_device_set_unplugged(dev);
420 if (dev->open_count == 0) {
423 mutex_unlock(&drm_global_mutex);
425 EXPORT_SYMBOL(drm_unplug_dev);
429 * We want to be able to allocate our own "struct address_space" to control
430 * memory-mappings in VRAM (or stolen RAM, ...). However, core MM does not allow
431 * stand-alone address_space objects, so we need an underlying inode. As there
432 * is no way to allocate an independent inode easily, we need a fake internal
435 * The drm_fs_inode_new() function allocates a new inode, drm_fs_inode_free()
436 * frees it again. You are allowed to use iget() and iput() to get references to
437 * the inode. But each drm_fs_inode_new() call must be paired with exactly one
438 * drm_fs_inode_free() call (which does not have to be the last iput()).
439 * We use drm_fs_inode_*() to manage our internal VFS mount-point and share it
440 * between multiple inode-users. You could, technically, call
441 * iget() + drm_fs_inode_free() directly after alloc and sometime later do an
442 * iput(), but this way you'd end up with a new vfsmount for each inode.
445 static int drm_fs_cnt;
446 static struct vfsmount *drm_fs_mnt;
448 static const struct dentry_operations drm_fs_dops = {
449 .d_dname = simple_dname,
452 static const struct super_operations drm_fs_sops = {
453 .statfs = simple_statfs,
456 static struct dentry *drm_fs_mount(struct file_system_type *fs_type, int flags,
457 const char *dev_name, void *data)
459 return mount_pseudo(fs_type,
466 static struct file_system_type drm_fs_type = {
468 .owner = THIS_MODULE,
469 .mount = drm_fs_mount,
470 .kill_sb = kill_anon_super,
473 static struct inode *drm_fs_inode_new(void)
478 r = simple_pin_fs(&drm_fs_type, &drm_fs_mnt, &drm_fs_cnt);
480 DRM_ERROR("Cannot mount pseudo fs: %d\n", r);
484 inode = alloc_anon_inode(drm_fs_mnt->mnt_sb);
486 simple_release_fs(&drm_fs_mnt, &drm_fs_cnt);
491 static void drm_fs_inode_free(struct inode *inode)
495 simple_release_fs(&drm_fs_mnt, &drm_fs_cnt);
500 * drm_dev_alloc - Allocate new DRM device
501 * @driver: DRM driver to allocate device for
502 * @parent: Parent device object
504 * Allocate and initialize a new DRM device. No device registration is done.
505 * Call drm_dev_register() to advertice the device to user space and register it
506 * with other core subsystems.
508 * The initial ref-count of the object is 1. Use drm_dev_ref() and
509 * drm_dev_unref() to take and drop further ref-counts.
511 * Note that for purely virtual devices @parent can be NULL.
514 * Pointer to new DRM device, or NULL if out of memory.
516 struct drm_device *drm_dev_alloc(struct drm_driver *driver,
517 struct device *parent)
519 struct drm_device *dev;
522 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
526 kref_init(&dev->ref);
528 dev->driver = driver;
530 INIT_LIST_HEAD(&dev->filelist);
531 INIT_LIST_HEAD(&dev->ctxlist);
532 INIT_LIST_HEAD(&dev->vmalist);
533 INIT_LIST_HEAD(&dev->maplist);
534 INIT_LIST_HEAD(&dev->vblank_event_list);
536 spin_lock_init(&dev->buf_lock);
537 spin_lock_init(&dev->event_lock);
538 mutex_init(&dev->struct_mutex);
539 mutex_init(&dev->ctxlist_mutex);
540 mutex_init(&dev->master_mutex);
542 dev->anon_inode = drm_fs_inode_new();
543 if (IS_ERR(dev->anon_inode)) {
544 ret = PTR_ERR(dev->anon_inode);
545 DRM_ERROR("Cannot allocate anonymous inode: %d\n", ret);
549 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
550 ret = drm_minor_alloc(dev, DRM_MINOR_CONTROL);
555 if (drm_core_check_feature(dev, DRIVER_RENDER)) {
556 ret = drm_minor_alloc(dev, DRM_MINOR_RENDER);
561 ret = drm_minor_alloc(dev, DRM_MINOR_LEGACY);
565 if (drm_ht_create(&dev->map_hash, 12))
568 drm_legacy_ctxbitmap_init(dev);
570 if (drm_core_check_feature(dev, DRIVER_GEM)) {
571 ret = drm_gem_init(dev);
573 DRM_ERROR("Cannot initialize graphics execution manager (GEM)\n");
581 drm_legacy_ctxbitmap_cleanup(dev);
582 drm_ht_remove(&dev->map_hash);
584 drm_minor_free(dev, DRM_MINOR_LEGACY);
585 drm_minor_free(dev, DRM_MINOR_RENDER);
586 drm_minor_free(dev, DRM_MINOR_CONTROL);
587 drm_fs_inode_free(dev->anon_inode);
589 mutex_destroy(&dev->master_mutex);
593 EXPORT_SYMBOL(drm_dev_alloc);
595 static void drm_dev_release(struct kref *ref)
597 struct drm_device *dev = container_of(ref, struct drm_device, ref);
599 if (drm_core_check_feature(dev, DRIVER_GEM))
600 drm_gem_destroy(dev);
602 drm_legacy_ctxbitmap_cleanup(dev);
603 drm_ht_remove(&dev->map_hash);
604 drm_fs_inode_free(dev->anon_inode);
606 drm_minor_free(dev, DRM_MINOR_LEGACY);
607 drm_minor_free(dev, DRM_MINOR_RENDER);
608 drm_minor_free(dev, DRM_MINOR_CONTROL);
610 mutex_destroy(&dev->master_mutex);
616 * drm_dev_ref - Take reference of a DRM device
617 * @dev: device to take reference of or NULL
619 * This increases the ref-count of @dev by one. You *must* already own a
620 * reference when calling this. Use drm_dev_unref() to drop this reference
623 * This function never fails. However, this function does not provide *any*
624 * guarantee whether the device is alive or running. It only provides a
625 * reference to the object and the memory associated with it.
627 void drm_dev_ref(struct drm_device *dev)
632 EXPORT_SYMBOL(drm_dev_ref);
635 * drm_dev_unref - Drop reference of a DRM device
636 * @dev: device to drop reference of or NULL
638 * This decreases the ref-count of @dev by one. The device is destroyed if the
639 * ref-count drops to zero.
641 void drm_dev_unref(struct drm_device *dev)
644 kref_put(&dev->ref, drm_dev_release);
646 EXPORT_SYMBOL(drm_dev_unref);
649 * drm_dev_register - Register DRM device
650 * @dev: Device to register
651 * @flags: Flags passed to the driver's .load() function
653 * Register the DRM device @dev with the system, advertise device to user-space
654 * and start normal device operation. @dev must be allocated via drm_dev_alloc()
657 * Never call this twice on any device!
660 * 0 on success, negative error code on failure.
662 int drm_dev_register(struct drm_device *dev, unsigned long flags)
666 mutex_lock(&drm_global_mutex);
668 ret = drm_minor_register(dev, DRM_MINOR_CONTROL);
672 ret = drm_minor_register(dev, DRM_MINOR_RENDER);
676 ret = drm_minor_register(dev, DRM_MINOR_LEGACY);
680 if (dev->driver->load) {
681 ret = dev->driver->load(dev, flags);
690 drm_minor_unregister(dev, DRM_MINOR_LEGACY);
691 drm_minor_unregister(dev, DRM_MINOR_RENDER);
692 drm_minor_unregister(dev, DRM_MINOR_CONTROL);
694 mutex_unlock(&drm_global_mutex);
697 EXPORT_SYMBOL(drm_dev_register);
700 * drm_dev_unregister - Unregister DRM device
701 * @dev: Device to unregister
703 * Unregister the DRM device from the system. This does the reverse of
704 * drm_dev_register() but does not deallocate the device. The caller must call
705 * drm_dev_unref() to drop their final reference.
707 void drm_dev_unregister(struct drm_device *dev)
709 struct drm_map_list *r_list, *list_temp;
713 if (dev->driver->unload)
714 dev->driver->unload(dev);
717 drm_pci_agp_destroy(dev);
719 drm_vblank_cleanup(dev);
721 list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head)
722 drm_legacy_rmmap(dev, r_list->map);
724 drm_minor_unregister(dev, DRM_MINOR_LEGACY);
725 drm_minor_unregister(dev, DRM_MINOR_RENDER);
726 drm_minor_unregister(dev, DRM_MINOR_CONTROL);
728 EXPORT_SYMBOL(drm_dev_unregister);
731 * drm_dev_set_unique - Set the unique name of a DRM device
732 * @dev: device of which to set the unique name
733 * @fmt: format string for unique name
735 * Sets the unique name of a DRM device using the specified format string and
736 * a variable list of arguments. Drivers can use this at driver probe time if
737 * the unique name of the devices they drive is static.
739 * Return: 0 on success or a negative error code on failure.
741 int drm_dev_set_unique(struct drm_device *dev, const char *fmt, ...)
748 dev->unique = kvasprintf(GFP_KERNEL, fmt, ap);
751 return dev->unique ? 0 : -ENOMEM;
753 EXPORT_SYMBOL(drm_dev_set_unique);
758 * The DRM core module initializes all global DRM objects and makes them
759 * available to drivers. Once setup, drivers can probe their respective
761 * Currently, core management includes:
762 * - The "DRM-Global" key/value database
763 * - Global ID management for connectors
764 * - DRM major number allocation
765 * - DRM minor management
769 * Furthermore, the DRM core provides dynamic char-dev lookups. For each
770 * interface registered on a DRM device, you can request minor numbers from DRM
771 * core. DRM core takes care of major-number management and char-dev
772 * registration. A stub ->open() callback forwards any open() requests to the
777 static int drm_stub_open(struct inode *inode, struct file *filp)
779 const struct file_operations *new_fops;
780 struct drm_minor *minor;
785 mutex_lock(&drm_global_mutex);
786 minor = drm_minor_acquire(iminor(inode));
788 err = PTR_ERR(minor);
792 new_fops = fops_get(minor->dev->driver->fops);
798 replace_fops(filp, new_fops);
799 if (filp->f_op->open)
800 err = filp->f_op->open(inode, filp);
805 drm_minor_release(minor);
807 mutex_unlock(&drm_global_mutex);
811 static const struct file_operations drm_stub_fops = {
812 .owner = THIS_MODULE,
813 .open = drm_stub_open,
814 .llseek = noop_llseek,
817 static int __init drm_core_init(void)
822 drm_connector_ida_init();
823 idr_init(&drm_minors_idr);
825 if (register_chrdev(DRM_MAJOR, "drm", &drm_stub_fops))
828 drm_class = drm_sysfs_create(THIS_MODULE, "drm");
829 if (IS_ERR(drm_class)) {
830 printk(KERN_ERR "DRM: Error creating drm class.\n");
831 ret = PTR_ERR(drm_class);
835 drm_debugfs_root = debugfs_create_dir("dri", NULL);
836 if (!drm_debugfs_root) {
837 DRM_ERROR("Cannot create /sys/kernel/debug/dri\n");
842 DRM_INFO("Initialized %s %d.%d.%d %s\n",
843 CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE);
848 unregister_chrdev(DRM_MAJOR, "drm");
850 idr_destroy(&drm_minors_idr);
855 static void __exit drm_core_exit(void)
857 debugfs_remove(drm_debugfs_root);
860 unregister_chrdev(DRM_MAJOR, "drm");
862 drm_connector_ida_destroy();
863 idr_destroy(&drm_minors_idr);
866 module_init(drm_core_init);
867 module_exit(drm_core_exit);
870 #include <sys/devfs.h>
872 #include <linux/export.h>
873 #include <linux/dmi.h>
874 #include <drm/drmP.h>
875 #include <drm/drm_core.h>
877 static int drm_load(struct drm_device *dev);
878 drm_pci_id_list_t *drm_find_description(int vendor, int device,
879 drm_pci_id_list_t *idlist);
881 #define DRIVER_SOFTC(unit) \
882 ((struct drm_device *)devclass_get_softc(drm_devclass, unit))
885 drm_modevent(module_t mod, int type, void *data)
890 TUNABLE_INT_FETCH("drm.debug", &drm_debug);
896 static moduledata_t drm_mod = {
901 DECLARE_MODULE(drm, drm_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
902 MODULE_VERSION(drm, 1);
903 MODULE_DEPEND(drm, agp, 1, 1, 1);
904 MODULE_DEPEND(drm, pci, 1, 1, 1);
905 MODULE_DEPEND(drm, iicbus, 1, 1, 1);
907 static struct dev_ops drm_cdevsw = {
908 { "drm", 0, D_TRACKCLOSE | D_MPSAFE },
910 .d_close = drm_close,
912 .d_ioctl = drm_ioctl,
913 .d_kqfilter = drm_kqfilter,
915 .d_mmap_single = drm_mmap_single,
918 SYSCTL_NODE(_hw, OID_AUTO, drm, CTLFLAG_RW, NULL, "DRM device");
919 SYSCTL_INT(_hw_drm, OID_AUTO, debug, CTLFLAG_RW, &drm_debug, 0,
922 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist)
924 drm_pci_id_list_t *id_entry;
927 vendor = pci_get_vendor(kdev);
928 device = pci_get_device(kdev);
930 if (pci_get_class(kdev) != PCIC_DISPLAY)
933 id_entry = drm_find_description(vendor, device, idlist);
934 if (id_entry != NULL) {
935 if (!device_get_desc(kdev)) {
936 DRM_DEBUG("desc : %s\n", device_get_desc(kdev));
937 device_set_desc(kdev, id_entry->name);
945 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist)
947 struct drm_device *dev;
948 drm_pci_id_list_t *id_entry;
953 unit = device_get_unit(kdev);
954 dev = device_get_softc(kdev);
956 if (!strcmp(device_get_name(kdev), "drmsub"))
957 dev->dev = device_get_parent(kdev);
961 dev->pci_domain = pci_get_domain(dev->dev);
962 dev->pci_bus = pci_get_bus(dev->dev);
963 dev->pci_slot = pci_get_slot(dev->dev);
964 dev->pci_func = pci_get_function(dev->dev);
965 drm_init_pdev(dev->dev, &dev->pdev);
967 id_entry = drm_find_description(dev->pdev->vendor,
968 dev->pdev->device, idlist);
969 dev->id_entry = id_entry;
971 if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) {
974 dev->irq_type = pci_alloc_1intr(dev->dev, msi_enable,
975 &dev->irqrid, &irq_flags);
977 dev->irqr = bus_alloc_resource_any(dev->dev, SYS_RES_IRQ,
978 &dev->irqrid, irq_flags);
984 dev->irq = (int) rman_get_start(dev->irqr);
987 lockinit(&dev->dev_lock, "drmdev", 0, LK_CANRECURSE);
988 lwkt_serialize_init(&dev->irq_lock);
989 lockinit(&dev->event_lock, "drmev", 0, LK_CANRECURSE);
990 lockinit(&dev->struct_mutex, "drmslk", 0, LK_CANRECURSE);
992 error = drm_load(dev);
996 error = drm_create_cdevs(kdev);
1003 bus_release_resource(dev->dev, SYS_RES_IRQ,
1004 dev->irqrid, dev->irqr);
1006 if (dev->irq_type == PCI_INTR_TYPE_MSI) {
1007 pci_release_msi(dev->dev);
1013 drm_create_cdevs(device_t kdev)
1015 struct drm_device *dev;
1018 unit = device_get_unit(kdev);
1019 dev = device_get_softc(kdev);
1021 dev->devnode = make_dev(&drm_cdevsw, unit, DRM_DEV_UID, DRM_DEV_GID,
1022 DRM_DEV_MODE, "dri/card%d", unit);
1025 dev->devnode->si_drv1 = dev;
1029 #ifndef DRM_DEV_NAME
1030 #define DRM_DEV_NAME "drm"
1033 devclass_t drm_devclass;
1035 drm_pci_id_list_t *drm_find_description(int vendor, int device,
1036 drm_pci_id_list_t *idlist)
1040 for (i = 0; idlist[i].vendor != 0; i++) {
1041 if ((idlist[i].vendor == vendor) &&
1042 ((idlist[i].device == device) ||
1043 (idlist[i].device == 0))) {
1050 static int drm_load(struct drm_device *dev)
1056 INIT_LIST_HEAD(&dev->maplist);
1058 drm_sysctl_init(dev);
1059 INIT_LIST_HEAD(&dev->filelist);
1062 dev->types[0] = _DRM_STAT_LOCK;
1063 dev->types[1] = _DRM_STAT_OPENS;
1064 dev->types[2] = _DRM_STAT_CLOSES;
1065 dev->types[3] = _DRM_STAT_IOCTLS;
1066 dev->types[4] = _DRM_STAT_LOCKS;
1067 dev->types[5] = _DRM_STAT_UNLOCKS;
1069 for (i = 0; i < ARRAY_SIZE(dev->counts); i++)
1070 atomic_set(&dev->counts[i], 0);
1072 INIT_LIST_HEAD(&dev->vblank_event_list);
1074 if (drm_core_check_feature(dev, DRIVER_USE_AGP)) {
1075 if (drm_pci_device_is_agp(dev))
1076 dev->agp = drm_agp_init(dev);
1077 if (dev->agp != NULL && dev->agp->agp_info.ai_aperture_base != 0) {
1078 if (drm_mtrr_add(dev->agp->agp_info.ai_aperture_base,
1079 dev->agp->agp_info.ai_aperture_size, DRM_MTRR_WC) == 0)
1080 dev->agp->agp_mtrr = 1;
1084 if (dev->driver->driver_features & DRIVER_GEM) {
1085 retcode = drm_gem_init(dev);
1087 DRM_ERROR("Cannot initialize graphics execution "
1093 if (dev->driver->load != NULL) {
1095 /* Shared code returns -errno. */
1096 retcode = -dev->driver->load(dev,
1097 dev->id_entry->driver_private);
1098 if (pci_enable_busmaster(dev->dev))
1099 DRM_ERROR("Request to enable bus-master failed.\n");
1105 DRM_INFO("Initialized %s %d.%d.%d %s\n",
1109 dev->driver->patchlevel,
1115 drm_gem_destroy(dev);
1116 drm_sysctl_cleanup(dev);
1120 if (dev->devnode != NULL)
1121 destroy_dev(dev->devnode);
1123 lockuninit(&dev->vbl_lock);
1124 lockuninit(&dev->dev_lock);
1125 lockuninit(&dev->event_lock);
1126 lockuninit(&dev->struct_mutex);
1132 * Stub is needed for devfs
1134 int drm_close(struct dev_close_args *ap)
1139 void drm_cdevpriv_dtor(void *cd)
1141 struct drm_file *file_priv = cd;
1142 struct drm_device *dev = file_priv->dev;
1145 DRM_DEBUG("open_count = %d\n", dev->open_count);
1149 if (dev->driver->preclose != NULL)
1150 dev->driver->preclose(dev, file_priv);
1152 /* ========================================================
1153 * Begin inline drm_release
1156 DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n",
1157 DRM_CURRENTPID, (long)dev->dev, dev->open_count);
1159 if (dev->driver->driver_features & DRIVER_GEM)
1160 drm_gem_release(dev, file_priv);
1162 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) &&
1163 !dev->driver->reclaim_buffers_locked)
1164 drm_legacy_reclaim_buffers(dev, file_priv);
1166 funsetown(&dev->buf_sigio);
1168 if (dev->driver->postclose != NULL)
1169 dev->driver->postclose(dev, file_priv);
1170 list_del(&file_priv->lhead);
1173 /* ========================================================
1174 * End inline drm_release
1177 atomic_inc(&dev->counts[_DRM_STAT_CLOSES]);
1178 device_unbusy(dev->dev);
1179 if (--dev->open_count == 0) {
1180 retcode = drm_lastclose(dev);
1187 drm_add_busid_modesetting(struct drm_device *dev, struct sysctl_ctx_list *ctx,
1188 struct sysctl_oid *top)
1190 struct sysctl_oid *oid;
1192 ksnprintf(dev->busid_str, sizeof(dev->busid_str),
1193 "pci:%04x:%02x:%02x.%d", dev->pci_domain, dev->pci_bus,
1194 dev->pci_slot, dev->pci_func);
1195 oid = SYSCTL_ADD_STRING(ctx, SYSCTL_CHILDREN(top), OID_AUTO, "busid",
1196 CTLFLAG_RD, dev->busid_str, 0, NULL);
1199 dev->modesetting = (dev->driver->driver_features & DRIVER_MODESET) != 0;
1200 oid = SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(top), OID_AUTO,
1201 "modesetting", CTLFLAG_RD, &dev->modesetting, 0, NULL);
1209 drm_mmap_single(struct dev_mmap_single_args *ap)
1211 struct drm_device *dev;
1212 struct cdev *kdev = ap->a_head.a_dev;
1213 vm_ooffset_t *offset = ap->a_offset;
1214 vm_size_t size = ap->a_size;
1215 struct vm_object **obj_res = ap->a_object;
1216 int nprot = ap->a_nprot;
1218 dev = drm_get_device_from_kdev(kdev);
1219 if (dev->drm_ttm_bdev != NULL) {
1220 return (ttm_bo_mmap_single(dev->drm_ttm_bdev, offset, size,
1222 } else if ((dev->driver->driver_features & DRIVER_GEM) != 0) {
1223 return (drm_gem_mmap_single(dev, offset, size, obj_res, nprot));
1229 /* XXX broken code */
1232 #include <sys/sysproto.h>
1234 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1);
1236 #define LINUX_IOCTL_DRM_MIN 0x6400
1237 #define LINUX_IOCTL_DRM_MAX 0x64ff
1239 static linux_ioctl_function_t drm_linux_ioctl;
1240 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl,
1241 LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX};
1243 /* The bits for in/out are switched on Linux */
1244 #define LINUX_IOC_IN IOC_OUT
1245 #define LINUX_IOC_OUT IOC_IN
1248 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args)
1251 int cmd = args->cmd;
1253 args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT);
1254 if (cmd & LINUX_IOC_IN)
1255 args->cmd |= IOC_IN;
1256 if (cmd & LINUX_IOC_OUT)
1257 args->cmd |= IOC_OUT;
1259 error = ioctl(p, (struct ioctl_args *)args);
1263 #endif /* DRM_LINUX */
1266 drm_core_init(void *arg)
1272 linux_ioctl_register_handler(&drm_handler);
1273 #endif /* DRM_LINUX */
1275 DRM_INFO("Initialized %s %d.%d.%d %s\n",
1276 CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE);
1281 drm_core_exit(void *arg)
1285 linux_ioctl_unregister_handler(&drm_handler);
1286 #endif /* DRM_LINUX */
1288 drm_global_release();
1291 SYSINIT(drm_register, SI_SUB_DRIVERS, SI_ORDER_MIDDLE,
1292 drm_core_init, NULL);
1293 SYSUNINIT(drm_unregister, SI_SUB_DRIVERS, SI_ORDER_MIDDLE,
1294 drm_core_exit, NULL);
1297 #include <linux/dmi.h>
1300 * Check if dmi_system_id structure matches system DMI data
1303 dmi_found(const struct dmi_system_id *dsi)
1307 char *sys_vendor, *board_vendor, *product_name, *board_name;
1309 sys_vendor = kgetenv("smbios.system.maker");
1310 board_vendor = kgetenv("smbios.planar.maker");
1311 product_name = kgetenv("smbios.system.product");
1312 board_name = kgetenv("smbios.planar.product");
1314 for (i = 0; i < NELEM(dsi->matches); i++) {
1315 slot = dsi->matches[i].slot;
1319 case DMI_SYS_VENDOR:
1320 if (sys_vendor != NULL &&
1321 !strcmp(sys_vendor, dsi->matches[i].substr))
1325 case DMI_BOARD_VENDOR:
1326 if (board_vendor != NULL &&
1327 !strcmp(board_vendor, dsi->matches[i].substr))
1331 case DMI_PRODUCT_NAME:
1332 if (product_name != NULL &&
1333 !strcmp(product_name, dsi->matches[i].substr))
1337 case DMI_BOARD_NAME:
1338 if (board_name != NULL &&
1339 !strcmp(board_name, dsi->matches[i].substr))
1350 if (sys_vendor != NULL)
1351 kfreeenv(sys_vendor);
1352 if (board_vendor != NULL)
1353 kfreeenv(board_vendor);
1354 if (product_name != NULL)
1355 kfreeenv(product_name);
1356 if (board_name != NULL)
1357 kfreeenv(board_name);
1362 int dmi_check_system(const struct dmi_system_id *sysid)
1364 const struct dmi_system_id *dsi;
1367 for (dsi = sysid; dsi->matches[0].slot != 0 ; dsi++) {
1368 if (dmi_found(dsi)) {
1370 if (dsi->callback && dsi->callback(dsi))