WebSVN – Kolibri OS – Diff – /drivers/video/drm/drm_stub.c


/*
 * Created: Fri Jan 19 10:48:35 2001 by faith@acm.org
 *
 * Copyright 2001 VA Linux Systems, Inc., Sunnyvale, California.
 * All Rights Reserved.
 *
 * Author Rickard E. (Rik) Faith 
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */
 
#include 
#include 
#include 
#include 
#include 
#include 
#include "drm_internal.h"
 
unsigned int drm_debug = 0;	/* 1 to enable debug output */
EXPORT_SYMBOL(drm_debug);
 
unsigned int drm_rnodes = 0;	/* 1 to enable experimental render nodes API */
EXPORT_SYMBOL(drm_rnodes);
 
/* 1 to allow user space to request universal planes (experimental) */
unsigned int drm_universal_planes = 0;
EXPORT_SYMBOL(drm_universal_planes);
 
unsigned int drm_vblank_offdelay = 5000;    /* Default to 5000 msecs. */
EXPORT_SYMBOL(drm_vblank_offdelay);
 
unsigned int drm_timestamp_precision = 20;  /* Default to 20 usecs. */
EXPORT_SYMBOL(drm_timestamp_precision);
 
struct idr drm_minors_idr;
 
void drm_err(const char *format, ...)
{
    struct va_format vaf;
    va_list args;
 
    va_start(args, format);
 
    vaf.fmt = format;
    vaf.va = &args;
 
    printk(KERN_ERR "[" DRM_NAME ":%pf] *ERROR* %pV",
           __builtin_return_address(0), &vaf);
 
    va_end(args);
}
EXPORT_SYMBOL(drm_err);
 
void drm_ut_debug_printk(const char *function_name, const char *format, ...)
{
	struct va_format vaf;
	va_list args;
 
//   if (drm_debug & request_level) {
//       if (function_name)
//           printk(KERN_DEBUG "[%s:%s], ", prefix, function_name);
//       va_start(args, format);
//       vprintk(format, args);
//       va_end(args);
//   }
}
EXPORT_SYMBOL(drm_ut_debug_printk);
 
#if 0
struct drm_master *drm_master_create(struct drm_minor *minor)
{
	struct drm_master *master;
 
	master = kzalloc(sizeof(*master), GFP_KERNEL);
	if (!master)
		return NULL;
 
	kref_init(&master->refcount);
	spin_lock_init(&master->lock.spinlock);
	init_waitqueue_head(&master->lock.lock_queue);
	if (drm_ht_create(&master->magiclist, DRM_MAGIC_HASH_ORDER)) {
		kfree(master);
		return NULL;
	}
	INIT_LIST_HEAD(&master->magicfree);
	master->minor = minor;
 
	return master;
}
 
struct drm_master *drm_master_get(struct drm_master *master)
{
	kref_get(&master->refcount);
	return master;
}
EXPORT_SYMBOL(drm_master_get);
 
static void drm_master_destroy(struct kref *kref)
{
	struct drm_master *master = container_of(kref, struct drm_master, refcount);
	struct drm_magic_entry *pt, *next;
	struct drm_device *dev = master->minor->dev;
	struct drm_map_list *r_list, *list_temp;
 
	mutex_lock(&dev->struct_mutex);
	if (dev->driver->master_destroy)
		dev->driver->master_destroy(dev, master);
 
	list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) {
		if (r_list->master == master) {
			drm_rmmap_locked(dev, r_list->map);
			r_list = NULL;
		}
	}
 
	if (master->unique) {
		kfree(master->unique);
		master->unique = NULL;
		master->unique_len = 0;
	}
 
	list_for_each_entry_safe(pt, next, &master->magicfree, head) {
		list_del(&pt->head);
		drm_ht_remove_item(&master->magiclist, &pt->hash_item);
		kfree(pt);
	}
 
	drm_ht_remove(&master->magiclist);
 
	mutex_unlock(&dev->struct_mutex);
	kfree(master);
}
 
void drm_master_put(struct drm_master **master)
{
	kref_put(&(*master)->refcount, drm_master_destroy);
	*master = NULL;
}
EXPORT_SYMBOL(drm_master_put);
 
int drm_setmaster_ioctl(struct drm_device *dev, void *data,
			struct drm_file *file_priv)
{
	int ret = 0;
 
	mutex_lock(&dev->master_mutex);
	if (file_priv->is_master)
		goto out_unlock;
 
	if (file_priv->minor->master) {
		ret = -EINVAL;
		goto out_unlock;
	}
 
	if (!file_priv->master) {
		ret = -EINVAL;
		goto out_unlock;
	}
 
	file_priv->minor->master = drm_master_get(file_priv->master);
	file_priv->is_master = 1;
	if (dev->driver->master_set) {
		ret = dev->driver->master_set(dev, file_priv, false);
		if (unlikely(ret != 0)) {
			file_priv->is_master = 0;
			drm_master_put(&file_priv->minor->master);
		}
	}
 
out_unlock:
	mutex_unlock(&dev->master_mutex);
	return ret;
}
 
int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
			 struct drm_file *file_priv)
{
	int ret = -EINVAL;
 
	mutex_lock(&dev->master_mutex);
	if (!file_priv->is_master)
		goto out_unlock;
 
	if (!file_priv->minor->master)
		goto out_unlock;
 
	ret = 0;
	if (dev->driver->master_drop)
		dev->driver->master_drop(dev, file_priv, false);
	drm_master_put(&file_priv->minor->master);
	file_priv->is_master = 0;
 
out_unlock:
	mutex_unlock(&dev->master_mutex);
	return ret;
}
 
/*
 * DRM Minors
 * A DRM device can provide several char-dev interfaces on the DRM-Major. Each
 * of them is represented by a drm_minor object. Depending on the capabilities
 * of the device-driver, different interfaces are registered.
 *
 * Minors can be accessed via dev->$minor_name. This pointer is either
 * NULL or a valid drm_minor pointer and stays valid as long as the device is
 * valid. This means, DRM minors have the same life-time as the underlying
 * device. However, this doesn't mean that the minor is active. Minors are
 * registered and unregistered dynamically according to device-state.
 */
 
static struct drm_minor **drm_minor_get_slot(struct drm_device *dev,
					     unsigned int type)
{
	switch (type) {
	case DRM_MINOR_LEGACY:
		return &dev->primary;
	case DRM_MINOR_RENDER:
		return &dev->render;
	case DRM_MINOR_CONTROL:
		return &dev->control;
	default:
		return NULL;
	}
}
 
static int drm_minor_alloc(struct drm_device *dev, unsigned int type)
{
	struct drm_minor *minor;
 
	minor = kzalloc(sizeof(*minor), GFP_KERNEL);
	if (!minor)
		return -ENOMEM;
 
	minor->type = type;
	minor->dev = dev;
 
	*drm_minor_get_slot(dev, type) = minor;
	return 0;
}
 
static void drm_minor_free(struct drm_device *dev, unsigned int type)
{
	struct drm_minor **slot;
 
	slot = drm_minor_get_slot(dev, type);
	if (*slot) {
		drm_mode_group_destroy(&(*slot)->mode_group);
		kfree(*slot);
		*slot = NULL;
	}
}
 
static int drm_minor_register(struct drm_device *dev, unsigned int type)
{
	struct drm_minor *new_minor;
	unsigned long flags;
	int ret;
	int minor_id;
 
	DRM_DEBUG("\n");
 
	new_minor = *drm_minor_get_slot(dev, type);
	if (!new_minor)
		return 0;
 
	idr_preload(GFP_KERNEL);
	spin_lock_irqsave(&drm_minor_lock, flags);
	minor_id = idr_alloc(&drm_minors_idr,
			     NULL,
			     64 * type,
			     64 * (type + 1),
			     GFP_NOWAIT);
	spin_unlock_irqrestore(&drm_minor_lock, flags);
	idr_preload_end();
 
	if (minor_id < 0)
		return minor_id;
 
	new_minor->index = minor_id;
 
	ret = drm_debugfs_init(new_minor, minor_id, drm_debugfs_root);
	if (ret) {
		DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
		goto err_id;
	}
 
	ret = drm_sysfs_device_add(new_minor);
	if (ret) {
		DRM_ERROR("DRM: Error sysfs_device_add.\n");
		goto err_debugfs;
	}
 
	/* replace NULL with @minor so lookups will succeed from now on */
	spin_lock_irqsave(&drm_minor_lock, flags);
	idr_replace(&drm_minors_idr, new_minor, new_minor->index);
	spin_unlock_irqrestore(&drm_minor_lock, flags);
 
	DRM_DEBUG("new minor assigned %d\n", minor_id);
	return 0;
 
err_debugfs:
	drm_debugfs_cleanup(new_minor);
err_id:
	spin_lock_irqsave(&drm_minor_lock, flags);
	idr_remove(&drm_minors_idr, minor_id);
	spin_unlock_irqrestore(&drm_minor_lock, flags);
	new_minor->index = 0;
	return ret;
}
 
static void drm_minor_unregister(struct drm_device *dev, unsigned int type)
{
	struct drm_minor *minor;
	unsigned long flags;
 
	minor = *drm_minor_get_slot(dev, type);
	if (!minor || !minor->kdev)
		return;
 
	spin_lock_irqsave(&drm_minor_lock, flags);
	idr_remove(&drm_minors_idr, minor->index);
	spin_unlock_irqrestore(&drm_minor_lock, flags);
	minor->index = 0;
 
	drm_debugfs_cleanup(minor);
	drm_sysfs_device_remove(minor);
}
 
/**
 * drm_minor_acquire - Acquire a DRM minor
 * @minor_id: Minor ID of the DRM-minor
 *
 * Looks up the given minor-ID and returns the respective DRM-minor object. The
 * refence-count of the underlying device is increased so you must release this
 * object with drm_minor_release().
 *
 * As long as you hold this minor, it is guaranteed that the object and the
 * minor->dev pointer will stay valid! However, the device may get unplugged and
 * unregistered while you hold the minor.
 *
 * Returns:
 * Pointer to minor-object with increased device-refcount, or PTR_ERR on
 * failure.
 */
struct drm_minor *drm_minor_acquire(unsigned int minor_id)
{
	struct drm_minor *minor;
	unsigned long flags;
 
	spin_lock_irqsave(&drm_minor_lock, flags);
	minor = idr_find(&drm_minors_idr, minor_id);
	if (minor)
		drm_dev_ref(minor->dev);
	spin_unlock_irqrestore(&drm_minor_lock, flags);
 
	if (!minor) {
		return ERR_PTR(-ENODEV);
	} else if (drm_device_is_unplugged(minor->dev)) {
		drm_dev_unref(minor->dev);
		return ERR_PTR(-ENODEV);
	}
 
	return minor;
}
 
/**
 * drm_minor_release - Release DRM minor
 * @minor: Pointer to DRM minor object
 *
 * Release a minor that was previously acquired via drm_minor_acquire().
 */
void drm_minor_release(struct drm_minor *minor)
{
	drm_dev_unref(minor->dev);
}
 
/**
 * drm_put_dev - Unregister and release a DRM device
 * @dev: DRM device
 *
 * Called at module unload time or when a PCI device is unplugged.
 *
 * Use of this function is discouraged. It will eventually go away completely.
 * Please use drm_dev_unregister() and drm_dev_unref() explicitly instead.
 *
 * Cleans up all DRM device, calling drm_lastclose().
 */
void drm_put_dev(struct drm_device *dev)
{
	DRM_DEBUG("\n");
 
	if (!dev) {
		DRM_ERROR("cleanup called no dev\n");
		return;
	}
 
	drm_dev_unregister(dev);
	drm_dev_unref(dev);
}
EXPORT_SYMBOL(drm_put_dev);
 
void drm_unplug_dev(struct drm_device *dev)
{
	/* for a USB device */
	drm_minor_unregister(dev, DRM_MINOR_LEGACY);
	drm_minor_unregister(dev, DRM_MINOR_RENDER);
	drm_minor_unregister(dev, DRM_MINOR_CONTROL);
 
	mutex_lock(&drm_global_mutex);
 
	drm_device_set_unplugged(dev);
 
	if (dev->open_count == 0) {
		drm_put_dev(dev);
	}
	mutex_unlock(&drm_global_mutex);
}
EXPORT_SYMBOL(drm_unplug_dev);
 
/*
 * DRM internal mount
 * We want to be able to allocate our own "struct address_space" to control
 * memory-mappings in VRAM (or stolen RAM, ...). However, core MM does not allow
 * stand-alone address_space objects, so we need an underlying inode. As there
 * is no way to allocate an independent inode easily, we need a fake internal
 * VFS mount-point.
 *
 * The drm_fs_inode_new() function allocates a new inode, drm_fs_inode_free()
 * frees it again. You are allowed to use iget() and iput() to get references to
 * the inode. But each drm_fs_inode_new() call must be paired with exactly one
 * drm_fs_inode_free() call (which does not have to be the last iput()).
 * We use drm_fs_inode_*() to manage our internal VFS mount-point and share it
 * between multiple inode-users. You could, technically, call
 * iget() + drm_fs_inode_free() directly after alloc and sometime later do an
 * iput(), but this way you'd end up with a new vfsmount for each inode.
 */
 
static int drm_fs_cnt;
static struct vfsmount *drm_fs_mnt;
 
static const struct dentry_operations drm_fs_dops = {
	.d_dname	= simple_dname,
};
 
static const struct super_operations drm_fs_sops = {
	.statfs		= simple_statfs,
};
 
static struct dentry *drm_fs_mount(struct file_system_type *fs_type, int flags,
				   const char *dev_name, void *data)
{
	return mount_pseudo(fs_type,
			    "drm:",
			    &drm_fs_sops,
			    &drm_fs_dops,
			    0x010203ff);
}
 
static struct file_system_type drm_fs_type = {
	.name		= "drm",
	.owner		= THIS_MODULE,
	.mount		= drm_fs_mount,
	.kill_sb	= kill_anon_super,
};
 
#endif
 
 
 
 
 
int drm_fill_in_dev(struct drm_device *dev,
			   const struct pci_device_id *ent,
			   struct drm_driver *driver)
{
	int ret;
	dev->driver = driver;
 
	INIT_LIST_HEAD(&dev->filelist);
	INIT_LIST_HEAD(&dev->ctxlist);
	INIT_LIST_HEAD(&dev->vmalist);
	INIT_LIST_HEAD(&dev->maplist);
	INIT_LIST_HEAD(&dev->vblank_event_list);
 
	spin_lock_init(&dev->buf_lock);
	spin_lock_init(&dev->event_lock);
	mutex_init(&dev->struct_mutex);
	mutex_init(&dev->ctxlist_mutex);
 
//	if (drm_ht_create(&dev->map_hash, 12)) {
//		return -ENOMEM;
//	}
 
 
 
	if (driver->driver_features & DRIVER_GEM) {
		ret = drm_gem_init(dev);
		if (ret) {
			DRM_ERROR("Cannot initialize graphics execution manager (GEM)\n");
			goto err_ctxbitmap;
		}
	}
 
	return 0;
 
err_ctxbitmap:
//   drm_lastclose(dev);
	return ret;
}
EXPORT_SYMBOL(drm_fill_in_dev);
/**
 * Compute size order.  Returns the exponent of the smaller power of two which
 * is greater or equal to given number.
 *
 * \param size size.
 * \return order.
 *
 * \todo Can be made faster.
 */
int drm_order(unsigned long size)
{
    int order;
    unsigned long tmp;
 
    for (order = 0, tmp = size >> 1; tmp; tmp >>= 1, order++) ;
 
    if (size & (size - 1))
        ++order;
 
    return order;
}
 
int drm_sysfs_connector_add(struct drm_connector *connector)
{
    return 0;
}
 
void drm_sysfs_connector_remove(struct drm_connector *connector)
{ }
 
void drm_sysfs_hotplug_event(struct drm_device *dev)
{
    DRM_DEBUG("generating hotplug event\n");
}
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Rev 6660	Rev 6935
1	/*	1	/*
2	* Created: Fri Jan 19 10:48:35 2001 by faith@acm.org	2	* Created: Fri Jan 19 10:48:35 2001 by faith@acm.org
3	*	3	*
4	* Copyright 2001 VA Linux Systems, Inc., Sunnyvale, California.	4	* Copyright 2001 VA Linux Systems, Inc., Sunnyvale, California.
5	* All Rights Reserved.	5	* All Rights Reserved.
6	*	6	*
7	* Author Rickard E. (Rik) Faith	7	* Author Rickard E. (Rik) Faith
8	*	8	*
9	* Permission is hereby granted, free of charge, to any person obtaining a	9	* Permission is hereby granted, free of charge, to any person obtaining a
10	* copy of this software and associated documentation files (the "Software"),	10	* copy of this software and associated documentation files (the "Software"),
11	* to deal in the Software without restriction, including without limitation	11	* to deal in the Software without restriction, including without limitation
12	* the rights to use, copy, modify, merge, publish, distribute, sublicense,	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	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:	14	* Software is furnished to do so, subject to the following conditions:
15	*	15	*
16	* The above copyright notice and this permission notice (including the next	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	17	* paragraph) shall be included in all copies or substantial portions of the
18	* Software.	18	* Software.
19	*	19	*
20	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR	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,	21	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL	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	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,	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	25	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
26	* DEALINGS IN THE SOFTWARE.	26	* DEALINGS IN THE SOFTWARE.
27	*/	27	*/
28		28
29	#include	29	#include
30	#include	30	#include
31	#include	31	#include
32	#include	32	#include
33	#include	33	#include
34	#include	34	#include
35	#include "drm_internal.h"	35	#include "drm_internal.h"
36		36
37	unsigned int drm_debug = 0; /* 1 to enable debug output */	37	unsigned int drm_debug = 0; /* 1 to enable debug output */
38	EXPORT_SYMBOL(drm_debug);	38	EXPORT_SYMBOL(drm_debug);
39		39
40	unsigned int drm_rnodes = 0; /* 1 to enable experimental render nodes API */	40	unsigned int drm_rnodes = 0; /* 1 to enable experimental render nodes API */
41	EXPORT_SYMBOL(drm_rnodes);	41	EXPORT_SYMBOL(drm_rnodes);
42		42
43	/* 1 to allow user space to request universal planes (experimental) */	43	/* 1 to allow user space to request universal planes (experimental) */
44	unsigned int drm_universal_planes = 0;	44	unsigned int drm_universal_planes = 0;
45	EXPORT_SYMBOL(drm_universal_planes);	45	EXPORT_SYMBOL(drm_universal_planes);
46		46
47	unsigned int drm_vblank_offdelay = 5000; /* Default to 5000 msecs. */	47	unsigned int drm_vblank_offdelay = 5000; /* Default to 5000 msecs. */
48	EXPORT_SYMBOL(drm_vblank_offdelay);	48	EXPORT_SYMBOL(drm_vblank_offdelay);
49		49
50	unsigned int drm_timestamp_precision = 20; /* Default to 20 usecs. */	50	unsigned int drm_timestamp_precision = 20; /* Default to 20 usecs. */
51	EXPORT_SYMBOL(drm_timestamp_precision);	51	EXPORT_SYMBOL(drm_timestamp_precision);
52		52
53	struct idr drm_minors_idr;	53	struct idr drm_minors_idr;
54		54
55	void drm_err(const char *format, ...)	55	void drm_err(const char *format, ...)
56	{	56	{
57	struct va_format vaf;	57	struct va_format vaf;
58	va_list args;	58	va_list args;
59		59
60	va_start(args, format);	60	va_start(args, format);
61		61
62	vaf.fmt = format;	62	vaf.fmt = format;
63	vaf.va = &args;	63	vaf.va = &args;
64		64
65	printk(KERN_ERR "[" DRM_NAME ":%pf] ERROR %pV",	65	printk(KERN_ERR "[" DRM_NAME ":%pf] ERROR %pV",
66	__builtin_return_address(0), &vaf);	66	__builtin_return_address(0), &vaf);
67		67
68	va_end(args);	68	va_end(args);
69	}	69	}
70	EXPORT_SYMBOL(drm_err);	70	EXPORT_SYMBOL(drm_err);
71		71
72	void drm_ut_debug_printk(const char function_name, const char format, ...)	72	void drm_ut_debug_printk(const char function_name, const char format, ...)
73	{	73	{
74	struct va_format vaf;	74	struct va_format vaf;
75	va_list args;	75	va_list args;
76		76
77	// if (drm_debug & request_level) {	77	// if (drm_debug & request_level) {
78	// if (function_name)	78	// if (function_name)
79	// printk(KERN_DEBUG "[%s:%s], ", prefix, function_name);	79	// printk(KERN_DEBUG "[%s:%s], ", prefix, function_name);
80	// va_start(args, format);	80	// va_start(args, format);
81	// vprintk(format, args);	81	// vprintk(format, args);
82	// va_end(args);	82	// va_end(args);
83	// }	83	// }
84	}	84	}
85	EXPORT_SYMBOL(drm_ut_debug_printk);	85	EXPORT_SYMBOL(drm_ut_debug_printk);
86		86
87	#if 0	87	#if 0
88	struct drm_master drm_master_create(struct drm_minor minor)	88	struct drm_master drm_master_create(struct drm_minor minor)
89	{	89	{
90	struct drm_master *master;	90	struct drm_master *master;
91		91
92	master = kzalloc(sizeof(*master), GFP_KERNEL);	92	master = kzalloc(sizeof(*master), GFP_KERNEL);
93	if (!master)	93	if (!master)
94	return NULL;	94	return NULL;
95		95
96	kref_init(&master->refcount);	96	kref_init(&master->refcount);
97	spin_lock_init(&master->lock.spinlock);	97	spin_lock_init(&master->lock.spinlock);
98	init_waitqueue_head(&master->lock.lock_queue);	98	init_waitqueue_head(&master->lock.lock_queue);
99	if (drm_ht_create(&master->magiclist, DRM_MAGIC_HASH_ORDER)) {	99	if (drm_ht_create(&master->magiclist, DRM_MAGIC_HASH_ORDER)) {
100	kfree(master);	100	kfree(master);
101	return NULL;	101	return NULL;
102	}	102	}
103	INIT_LIST_HEAD(&master->magicfree);	103	INIT_LIST_HEAD(&master->magicfree);
104	master->minor = minor;	104	master->minor = minor;
105		105
106	return master;	106	return master;
107	}	107	}
108		108
109	struct drm_master drm_master_get(struct drm_master master)	109	struct drm_master drm_master_get(struct drm_master master)
110	{	110	{
111	kref_get(&master->refcount);	111	kref_get(&master->refcount);
112	return master;	112	return master;
113	}	113	}
114	EXPORT_SYMBOL(drm_master_get);	114	EXPORT_SYMBOL(drm_master_get);
115		115
116	static void drm_master_destroy(struct kref *kref)	116	static void drm_master_destroy(struct kref *kref)
117	{	117	{
118	struct drm_master *master = container_of(kref, struct drm_master, refcount);	118	struct drm_master *master = container_of(kref, struct drm_master, refcount);
119	struct drm_magic_entry pt, next;	119	struct drm_magic_entry pt, next;
120	struct drm_device *dev = master->minor->dev;	120	struct drm_device *dev = master->minor->dev;
121	struct drm_map_list r_list, list_temp;	121	struct drm_map_list r_list, list_temp;
122		122
123	mutex_lock(&dev->struct_mutex);	123	mutex_lock(&dev->struct_mutex);
124	if (dev->driver->master_destroy)	124	if (dev->driver->master_destroy)
125	dev->driver->master_destroy(dev, master);	125	dev->driver->master_destroy(dev, master);
126		126
127	list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) {	127	list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) {
128	if (r_list->master == master) {	128	if (r_list->master == master) {
129	drm_rmmap_locked(dev, r_list->map);	129	drm_rmmap_locked(dev, r_list->map);
130	r_list = NULL;	130	r_list = NULL;
131	}	131	}
132	}	132	}
133		133
134	if (master->unique) {	134	if (master->unique) {
135	kfree(master->unique);	135	kfree(master->unique);
136	master->unique = NULL;	136	master->unique = NULL;
137	master->unique_len = 0;	137	master->unique_len = 0;
138	}	138	}
139		139
140	list_for_each_entry_safe(pt, next, &master->magicfree, head) {	140	list_for_each_entry_safe(pt, next, &master->magicfree, head) {
141	list_del(&pt->head);	141	list_del(&pt->head);
142	drm_ht_remove_item(&master->magiclist, &pt->hash_item);	142	drm_ht_remove_item(&master->magiclist, &pt->hash_item);
143	kfree(pt);	143	kfree(pt);
144	}	144	}
145		145
146	drm_ht_remove(&master->magiclist);	146	drm_ht_remove(&master->magiclist);
147		147
148	mutex_unlock(&dev->struct_mutex);	148	mutex_unlock(&dev->struct_mutex);
149	kfree(master);	149	kfree(master);
150	}	150	}
151		151
152	void drm_master_put(struct drm_master **master)	152	void drm_master_put(struct drm_master **master)
153	{	153	{
154	kref_put(&(*master)->refcount, drm_master_destroy);	154	kref_put(&(*master)->refcount, drm_master_destroy);
155	*master = NULL;	155	*master = NULL;
156	}	156	}
157	EXPORT_SYMBOL(drm_master_put);	157	EXPORT_SYMBOL(drm_master_put);
158		158
159	int drm_setmaster_ioctl(struct drm_device dev, void data,	159	int drm_setmaster_ioctl(struct drm_device dev, void data,
160	struct drm_file *file_priv)	160	struct drm_file *file_priv)
161	{	161	{
162	int ret = 0;	162	int ret = 0;
163		163
164	mutex_lock(&dev->master_mutex);	164	mutex_lock(&dev->master_mutex);
165	if (file_priv->is_master)	165	if (file_priv->is_master)
166	goto out_unlock;	166	goto out_unlock;
167		167
168	if (file_priv->minor->master) {	168	if (file_priv->minor->master) {
169	ret = -EINVAL;	169	ret = -EINVAL;
170	goto out_unlock;	170	goto out_unlock;
171	}	171	}
172		172
173	if (!file_priv->master) {	173	if (!file_priv->master) {
174	ret = -EINVAL;	174	ret = -EINVAL;
175	goto out_unlock;	175	goto out_unlock;
176	}	176	}
177		177
178	file_priv->minor->master = drm_master_get(file_priv->master);	178	file_priv->minor->master = drm_master_get(file_priv->master);
179	file_priv->is_master = 1;	179	file_priv->is_master = 1;
180	if (dev->driver->master_set) {	180	if (dev->driver->master_set) {
181	ret = dev->driver->master_set(dev, file_priv, false);	181	ret = dev->driver->master_set(dev, file_priv, false);
182	if (unlikely(ret != 0)) {	182	if (unlikely(ret != 0)) {
183	file_priv->is_master = 0;	183	file_priv->is_master = 0;
184	drm_master_put(&file_priv->minor->master);	184	drm_master_put(&file_priv->minor->master);
185	}	185	}
186	}	186	}
187		187
188	out_unlock:	188	out_unlock:
189	mutex_unlock(&dev->master_mutex);	189	mutex_unlock(&dev->master_mutex);
190	return ret;	190	return ret;
191	}	191	}
192		192
193	int drm_dropmaster_ioctl(struct drm_device dev, void data,	193	int drm_dropmaster_ioctl(struct drm_device dev, void data,
194	struct drm_file *file_priv)	194	struct drm_file *file_priv)
195	{	195	{
196	int ret = -EINVAL;	196	int ret = -EINVAL;
197		197
198	mutex_lock(&dev->master_mutex);	198	mutex_lock(&dev->master_mutex);
199	if (!file_priv->is_master)	199	if (!file_priv->is_master)
200	goto out_unlock;	200	goto out_unlock;
201		201
202	if (!file_priv->minor->master)	202	if (!file_priv->minor->master)
203	goto out_unlock;	203	goto out_unlock;
204		204
205	ret = 0;	205	ret = 0;
206	if (dev->driver->master_drop)	206	if (dev->driver->master_drop)
207	dev->driver->master_drop(dev, file_priv, false);	207	dev->driver->master_drop(dev, file_priv, false);
208	drm_master_put(&file_priv->minor->master);	208	drm_master_put(&file_priv->minor->master);
209	file_priv->is_master = 0;	209	file_priv->is_master = 0;
210		210
211	out_unlock:	211	out_unlock:
212	mutex_unlock(&dev->master_mutex);	212	mutex_unlock(&dev->master_mutex);
213	return ret;	213	return ret;
214	}	214	}
215		215
216	/*	216	/*
217	* DRM Minors	217	* DRM Minors
218	* A DRM device can provide several char-dev interfaces on the DRM-Major. Each	218	* A DRM device can provide several char-dev interfaces on the DRM-Major. Each
219	* of them is represented by a drm_minor object. Depending on the capabilities	219	* of them is represented by a drm_minor object. Depending on the capabilities
220	* of the device-driver, different interfaces are registered.	220	* of the device-driver, different interfaces are registered.
221	*	221	*
222	* Minors can be accessed via dev->$minor_name. This pointer is either	222	* Minors can be accessed via dev->$minor_name. This pointer is either
223	* NULL or a valid drm_minor pointer and stays valid as long as the device is	223	* NULL or a valid drm_minor pointer and stays valid as long as the device is
224	* valid. This means, DRM minors have the same life-time as the underlying	224	* valid. This means, DRM minors have the same life-time as the underlying
225	* device. However, this doesn't mean that the minor is active. Minors are	225	* device. However, this doesn't mean that the minor is active. Minors are
226	* registered and unregistered dynamically according to device-state.	226	* registered and unregistered dynamically according to device-state.
227	*/	227	*/
228		228
229	static struct drm_minor *drm_minor_get_slot(struct drm_device dev,	229	static struct drm_minor *drm_minor_get_slot(struct drm_device dev,
230	unsigned int type)	230	unsigned int type)
231	{	231	{
232	switch (type) {	232	switch (type) {
233	case DRM_MINOR_LEGACY:	233	case DRM_MINOR_LEGACY:
234	return &dev->primary;	234	return &dev->primary;
235	case DRM_MINOR_RENDER:	235	case DRM_MINOR_RENDER:
236	return &dev->render;	236	return &dev->render;
237	case DRM_MINOR_CONTROL:	237	case DRM_MINOR_CONTROL:
238	return &dev->control;	238	return &dev->control;
239	default:	239	default:
240	return NULL;	240	return NULL;
241	}	241	}
242	}	242	}
243		243
244	static int drm_minor_alloc(struct drm_device *dev, unsigned int type)	244	static int drm_minor_alloc(struct drm_device *dev, unsigned int type)
245	{	245	{
246	struct drm_minor *minor;	246	struct drm_minor *minor;
247		247
248	minor = kzalloc(sizeof(*minor), GFP_KERNEL);	248	minor = kzalloc(sizeof(*minor), GFP_KERNEL);
249	if (!minor)	249	if (!minor)
250	return -ENOMEM;	250	return -ENOMEM;
251		251
252	minor->type = type;	252	minor->type = type;
253	minor->dev = dev;	253	minor->dev = dev;
254		254
255	*drm_minor_get_slot(dev, type) = minor;	255	*drm_minor_get_slot(dev, type) = minor;
256	return 0;	256	return 0;
257	}	257	}
258		258
259	static void drm_minor_free(struct drm_device *dev, unsigned int type)	259	static void drm_minor_free(struct drm_device *dev, unsigned int type)
260	{	260	{
261	struct drm_minor **slot;	261	struct drm_minor **slot;
262		262
263	slot = drm_minor_get_slot(dev, type);	263	slot = drm_minor_get_slot(dev, type);
264	if (*slot) {	264	if (*slot) {
265	drm_mode_group_destroy(&(*slot)->mode_group);	265	drm_mode_group_destroy(&(*slot)->mode_group);
266	kfree(*slot);	266	kfree(*slot);
267	*slot = NULL;	267	*slot = NULL;
268	}	268	}
269	}	269	}
270		270
271	static int drm_minor_register(struct drm_device *dev, unsigned int type)	271	static int drm_minor_register(struct drm_device *dev, unsigned int type)
272	{	272	{
273	struct drm_minor *new_minor;	273	struct drm_minor *new_minor;
274	unsigned long flags;	274	unsigned long flags;
275	int ret;	275	int ret;
276	int minor_id;	276	int minor_id;
277		277
278	DRM_DEBUG("\n");	278	DRM_DEBUG("\n");
279		279
280	new_minor = *drm_minor_get_slot(dev, type);	280	new_minor = *drm_minor_get_slot(dev, type);
281	if (!new_minor)	281	if (!new_minor)
282	return 0;	282	return 0;
283		283
284	idr_preload(GFP_KERNEL);	284	idr_preload(GFP_KERNEL);
285	spin_lock_irqsave(&drm_minor_lock, flags);	285	spin_lock_irqsave(&drm_minor_lock, flags);
286	minor_id = idr_alloc(&drm_minors_idr,	286	minor_id = idr_alloc(&drm_minors_idr,
287	NULL,	287	NULL,
288	64 * type,	288	64 * type,
289	64 * (type + 1),	289	64 * (type + 1),
290	GFP_NOWAIT);	290	GFP_NOWAIT);
291	spin_unlock_irqrestore(&drm_minor_lock, flags);	291	spin_unlock_irqrestore(&drm_minor_lock, flags);
292	idr_preload_end();	292	idr_preload_end();
293		293
294	if (minor_id < 0)	294	if (minor_id < 0)
295	return minor_id;	295	return minor_id;
296		296
297	new_minor->index = minor_id;	297	new_minor->index = minor_id;
298		298
299	ret = drm_debugfs_init(new_minor, minor_id, drm_debugfs_root);	299	ret = drm_debugfs_init(new_minor, minor_id, drm_debugfs_root);
300	if (ret) {	300	if (ret) {
301	DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");	301	DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
302	goto err_id;	302	goto err_id;
303	}	303	}
304		304
305	ret = drm_sysfs_device_add(new_minor);	305	ret = drm_sysfs_device_add(new_minor);
306	if (ret) {	306	if (ret) {
307	DRM_ERROR("DRM: Error sysfs_device_add.\n");	307	DRM_ERROR("DRM: Error sysfs_device_add.\n");
308	goto err_debugfs;	308	goto err_debugfs;
309	}	309	}
310		310
311	/* replace NULL with @minor so lookups will succeed from now on */	311	/* replace NULL with @minor so lookups will succeed from now on */
312	spin_lock_irqsave(&drm_minor_lock, flags);	312	spin_lock_irqsave(&drm_minor_lock, flags);
313	idr_replace(&drm_minors_idr, new_minor, new_minor->index);	313	idr_replace(&drm_minors_idr, new_minor, new_minor->index);
314	spin_unlock_irqrestore(&drm_minor_lock, flags);	314	spin_unlock_irqrestore(&drm_minor_lock, flags);
315		315
316	DRM_DEBUG("new minor assigned %d\n", minor_id);	316	DRM_DEBUG("new minor assigned %d\n", minor_id);
317	return 0;	317	return 0;
318		318
319	err_debugfs:	319	err_debugfs:
320	drm_debugfs_cleanup(new_minor);	320	drm_debugfs_cleanup(new_minor);
321	err_id:	321	err_id:
322	spin_lock_irqsave(&drm_minor_lock, flags);	322	spin_lock_irqsave(&drm_minor_lock, flags);
323	idr_remove(&drm_minors_idr, minor_id);	323	idr_remove(&drm_minors_idr, minor_id);
324	spin_unlock_irqrestore(&drm_minor_lock, flags);	324	spin_unlock_irqrestore(&drm_minor_lock, flags);
325	new_minor->index = 0;	325	new_minor->index = 0;
326	return ret;	326	return ret;
327	}	327	}
328		328
329	static void drm_minor_unregister(struct drm_device *dev, unsigned int type)	329	static void drm_minor_unregister(struct drm_device *dev, unsigned int type)
330	{	330	{
331	struct drm_minor *minor;	331	struct drm_minor *minor;
332	unsigned long flags;	332	unsigned long flags;
333		333
334	minor = *drm_minor_get_slot(dev, type);	334	minor = *drm_minor_get_slot(dev, type);
335	if (!minor \|\| !minor->kdev)	335	if (!minor \|\| !minor->kdev)
336	return;	336	return;
337		337
338	spin_lock_irqsave(&drm_minor_lock, flags);	338	spin_lock_irqsave(&drm_minor_lock, flags);
339	idr_remove(&drm_minors_idr, minor->index);	339	idr_remove(&drm_minors_idr, minor->index);
340	spin_unlock_irqrestore(&drm_minor_lock, flags);	340	spin_unlock_irqrestore(&drm_minor_lock, flags);
341	minor->index = 0;	341	minor->index = 0;
342		342
343	drm_debugfs_cleanup(minor);	343	drm_debugfs_cleanup(minor);
344	drm_sysfs_device_remove(minor);	344	drm_sysfs_device_remove(minor);
345	}	345	}
346		346
347	/**	347	/**
348	* drm_minor_acquire - Acquire a DRM minor	348	* drm_minor_acquire - Acquire a DRM minor
349	* @minor_id: Minor ID of the DRM-minor	349	* @minor_id: Minor ID of the DRM-minor
350	*	350	*
351	* Looks up the given minor-ID and returns the respective DRM-minor object. The	351	* Looks up the given minor-ID and returns the respective DRM-minor object. The
352	* refence-count of the underlying device is increased so you must release this	352	* refence-count of the underlying device is increased so you must release this
353	* object with drm_minor_release().	353	* object with drm_minor_release().
354	*	354	*
355	* As long as you hold this minor, it is guaranteed that the object and the	355	* As long as you hold this minor, it is guaranteed that the object and the
356	* minor->dev pointer will stay valid! However, the device may get unplugged and	356	* minor->dev pointer will stay valid! However, the device may get unplugged and
357	* unregistered while you hold the minor.	357	* unregistered while you hold the minor.
358	*	358	*
359	* Returns:	359	* Returns:
360	* Pointer to minor-object with increased device-refcount, or PTR_ERR on	360	* Pointer to minor-object with increased device-refcount, or PTR_ERR on
361	* failure.	361	* failure.
362	*/	362	*/
363	struct drm_minor *drm_minor_acquire(unsigned int minor_id)	363	struct drm_minor *drm_minor_acquire(unsigned int minor_id)
364	{	364	{
365	struct drm_minor *minor;	365	struct drm_minor *minor;
366	unsigned long flags;	366	unsigned long flags;
367		367
368	spin_lock_irqsave(&drm_minor_lock, flags);	368	spin_lock_irqsave(&drm_minor_lock, flags);
369	minor = idr_find(&drm_minors_idr, minor_id);	369	minor = idr_find(&drm_minors_idr, minor_id);
370	if (minor)	370	if (minor)
371	drm_dev_ref(minor->dev);	371	drm_dev_ref(minor->dev);
372	spin_unlock_irqrestore(&drm_minor_lock, flags);	372	spin_unlock_irqrestore(&drm_minor_lock, flags);
373		373
374	if (!minor) {	374	if (!minor) {
375	return ERR_PTR(-ENODEV);	375	return ERR_PTR(-ENODEV);
376	} else if (drm_device_is_unplugged(minor->dev)) {	376	} else if (drm_device_is_unplugged(minor->dev)) {
377	drm_dev_unref(minor->dev);	377	drm_dev_unref(minor->dev);
378	return ERR_PTR(-ENODEV);	378	return ERR_PTR(-ENODEV);
379	}	379	}
380		380
381	return minor;	381	return minor;
382	}	382	}
383		383
384	/**	384	/**
385	* drm_minor_release - Release DRM minor	385	* drm_minor_release - Release DRM minor
386	* @minor: Pointer to DRM minor object	386	* @minor: Pointer to DRM minor object
387	*	387	*
388	* Release a minor that was previously acquired via drm_minor_acquire().	388	* Release a minor that was previously acquired via drm_minor_acquire().
389	*/	389	*/
390	void drm_minor_release(struct drm_minor *minor)	390	void drm_minor_release(struct drm_minor *minor)
391	{	391	{
392	drm_dev_unref(minor->dev);	392	drm_dev_unref(minor->dev);
393	}	393	}
394		394
395	/**	395	/**
396	* drm_put_dev - Unregister and release a DRM device	396	* drm_put_dev - Unregister and release a DRM device
397	* @dev: DRM device	397	* @dev: DRM device
398	*	398	*
399	* Called at module unload time or when a PCI device is unplugged.	399	* Called at module unload time or when a PCI device is unplugged.
400	*	400	*
401	* Use of this function is discouraged. It will eventually go away completely.	401	* Use of this function is discouraged. It will eventually go away completely.
402	* Please use drm_dev_unregister() and drm_dev_unref() explicitly instead.	402	* Please use drm_dev_unregister() and drm_dev_unref() explicitly instead.
403	*	403	*
404	* Cleans up all DRM device, calling drm_lastclose().	404	* Cleans up all DRM device, calling drm_lastclose().
405	*/	405	*/
406	void drm_put_dev(struct drm_device *dev)	406	void drm_put_dev(struct drm_device *dev)
407	{	407	{
408	DRM_DEBUG("\n");	408	DRM_DEBUG("\n");
409		409
410	if (!dev) {	410	if (!dev) {
411	DRM_ERROR("cleanup called no dev\n");	411	DRM_ERROR("cleanup called no dev\n");
412	return;	412	return;
413	}	413	}
414		414
415	drm_dev_unregister(dev);	415	drm_dev_unregister(dev);
416	drm_dev_unref(dev);	416	drm_dev_unref(dev);
417	}	417	}
418	EXPORT_SYMBOL(drm_put_dev);	418	EXPORT_SYMBOL(drm_put_dev);
419		419
420	void drm_unplug_dev(struct drm_device *dev)	420	void drm_unplug_dev(struct drm_device *dev)
421	{	421	{
422	/* for a USB device */	422	/* for a USB device */
423	drm_minor_unregister(dev, DRM_MINOR_LEGACY);	423	drm_minor_unregister(dev, DRM_MINOR_LEGACY);
424	drm_minor_unregister(dev, DRM_MINOR_RENDER);	424	drm_minor_unregister(dev, DRM_MINOR_RENDER);
425	drm_minor_unregister(dev, DRM_MINOR_CONTROL);	425	drm_minor_unregister(dev, DRM_MINOR_CONTROL);
426		426
427	mutex_lock(&drm_global_mutex);	427	mutex_lock(&drm_global_mutex);
428		428
429	drm_device_set_unplugged(dev);	429	drm_device_set_unplugged(dev);
430		430
431	if (dev->open_count == 0) {	431	if (dev->open_count == 0) {
432	drm_put_dev(dev);	432	drm_put_dev(dev);
433	}	433	}
434	mutex_unlock(&drm_global_mutex);	434	mutex_unlock(&drm_global_mutex);
435	}	435	}
436	EXPORT_SYMBOL(drm_unplug_dev);	436	EXPORT_SYMBOL(drm_unplug_dev);
437		437
438	/*	438	/*
439	* DRM internal mount	439	* DRM internal mount
440	* We want to be able to allocate our own "struct address_space" to control	440	* We want to be able to allocate our own "struct address_space" to control
441	* memory-mappings in VRAM (or stolen RAM, ...). However, core MM does not allow	441	* memory-mappings in VRAM (or stolen RAM, ...). However, core MM does not allow
442	* stand-alone address_space objects, so we need an underlying inode. As there	442	* stand-alone address_space objects, so we need an underlying inode. As there
443	* is no way to allocate an independent inode easily, we need a fake internal	443	* is no way to allocate an independent inode easily, we need a fake internal
444	* VFS mount-point.	444	* VFS mount-point.
445	*	445	*
446	* The drm_fs_inode_new() function allocates a new inode, drm_fs_inode_free()	446	* The drm_fs_inode_new() function allocates a new inode, drm_fs_inode_free()
447	* frees it again. You are allowed to use iget() and iput() to get references to	447	* frees it again. You are allowed to use iget() and iput() to get references to
448	* the inode. But each drm_fs_inode_new() call must be paired with exactly one	448	* the inode. But each drm_fs_inode_new() call must be paired with exactly one
449	* drm_fs_inode_free() call (which does not have to be the last iput()).	449	* drm_fs_inode_free() call (which does not have to be the last iput()).
450	* We use drm_fs_inode_*() to manage our internal VFS mount-point and share it	450	* We use drm_fs_inode_*() to manage our internal VFS mount-point and share it
451	* between multiple inode-users. You could, technically, call	451	* between multiple inode-users. You could, technically, call
452	* iget() + drm_fs_inode_free() directly after alloc and sometime later do an	452	* iget() + drm_fs_inode_free() directly after alloc and sometime later do an
453	* iput(), but this way you'd end up with a new vfsmount for each inode.	453	* iput(), but this way you'd end up with a new vfsmount for each inode.
454	*/	454	*/
455		455
456	static int drm_fs_cnt;	456	static int drm_fs_cnt;
457	static struct vfsmount *drm_fs_mnt;	457	static struct vfsmount *drm_fs_mnt;
458		458
459	static const struct dentry_operations drm_fs_dops = {	459	static const struct dentry_operations drm_fs_dops = {
460	.d_dname = simple_dname,	460	.d_dname = simple_dname,
461	};	461	};
462		462
463	static const struct super_operations drm_fs_sops = {	463	static const struct super_operations drm_fs_sops = {
464	.statfs = simple_statfs,	464	.statfs = simple_statfs,
465	};	465	};
466		466
467	static struct dentry drm_fs_mount(struct file_system_type fs_type, int flags,	467	static struct dentry drm_fs_mount(struct file_system_type fs_type, int flags,
468	const char dev_name, void data)	468	const char dev_name, void data)
469	{	469	{
470	return mount_pseudo(fs_type,	470	return mount_pseudo(fs_type,
471	"drm:",	471	"drm:",
472	&drm_fs_sops,	472	&drm_fs_sops,
473	&drm_fs_dops,	473	&drm_fs_dops,
474	0x010203ff);	474	0x010203ff);
475	}	475	}
476		476
477	static struct file_system_type drm_fs_type = {	477	static struct file_system_type drm_fs_type = {
478	.name = "drm",	478	.name = "drm",
479	.owner = THIS_MODULE,	479	.owner = THIS_MODULE,
480	.mount = drm_fs_mount,	480	.mount = drm_fs_mount,
481	.kill_sb = kill_anon_super,	481	.kill_sb = kill_anon_super,
482	};	482	};
483		483
484	#endif	484	#endif
485		485
486		486
487		487
488		488
489		489
490	int drm_fill_in_dev(struct drm_device *dev,	490	int drm_fill_in_dev(struct drm_device *dev,
491	const struct pci_device_id *ent,	491	const struct pci_device_id *ent,
492	struct drm_driver *driver)	492	struct drm_driver *driver)
493	{	493	{
494	int ret;	494	int ret;
495	dev->driver = driver;	495	dev->driver = driver;
496		496
497	INIT_LIST_HEAD(&dev->filelist);	497	INIT_LIST_HEAD(&dev->filelist);
498	INIT_LIST_HEAD(&dev->ctxlist);	498	INIT_LIST_HEAD(&dev->ctxlist);
499	INIT_LIST_HEAD(&dev->vmalist);	499	INIT_LIST_HEAD(&dev->vmalist);
500	INIT_LIST_HEAD(&dev->maplist);	500	INIT_LIST_HEAD(&dev->maplist);

Subversion Repositories Kolibri OS

(root)/drivers/video/drm/drm_stub.c @ 4560 – Rev 6660 → 6935