[deliverable/linux.git] / drivers / char / drm / drm_ioctl.c

/**
 * \file drm_ioctl.c
 * IOCTL processing for DRM
 *
 * \author Rickard E. (Rik) Faith <faith@valinux.com>
 * \author Gareth Hughes <gareth@valinux.com>
 */

/*
 * Created: Fri Jan  8 09:01:26 1999 by faith@valinux.com
 *
 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
 * All Rights Reserved.
 *
 * 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
 * VA LINUX SYSTEMS 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 "drmP.h"
#include "drm_core.h"

#include "linux/pci.h"

/**
 * Get the bus id.
 *
 * \param inode device inode.
 * \param file_priv DRM file private.
 * \param cmd command.
 * \param arg user argument, pointing to a drm_unique structure.
 * \return zero on success or a negative number on failure.
 *
 * Copies the bus id from drm_device::unique into user space.
 */
int drm_getunique(struct inode *inode, struct drm_file *file_priv,
		  unsigned int cmd, unsigned long arg)
{
	struct drm_device *dev = file_priv->head->dev;
	struct drm_unique __user *argp = (void __user *)arg;
	struct drm_unique u;

	if (copy_from_user(&u, argp, sizeof(u)))
		return -EFAULT;
	if (u.unique_len >= dev->unique_len) {
		if (copy_to_user(u.unique, dev->unique, dev->unique_len))
			return -EFAULT;
	}
	u.unique_len = dev->unique_len;
	if (copy_to_user(argp, &u, sizeof(u)))
		return -EFAULT;
	return 0;
}

/**
 * Set the bus id.
 *
 * \param inode device inode.
 * \param file_priv DRM file private.
 * \param cmd command.
 * \param arg user argument, pointing to a drm_unique structure.
 * \return zero on success or a negative number on failure.
 *
 * Copies the bus id from userspace into drm_device::unique, and verifies that
 * it matches the device this DRM is attached to (EINVAL otherwise).  Deprecated
 * in interface version 1.1 and will return EBUSY when setversion has requested
 * version 1.1 or greater.
 */
int drm_setunique(struct inode *inode, struct drm_file *file_priv,
		  unsigned int cmd, unsigned long arg)
{
	struct drm_device *dev = file_priv->head->dev;
	struct drm_unique u;
	int domain, bus, slot, func, ret;

	if (dev->unique_len || dev->unique)
		return -EBUSY;

	if (copy_from_user(&u, (struct drm_unique __user *) arg, sizeof(u)))
		return -EFAULT;

	if (!u.unique_len || u.unique_len > 1024)
		return -EINVAL;

	dev->unique_len = u.unique_len;
	dev->unique = drm_alloc(u.unique_len + 1, DRM_MEM_DRIVER);
	if (!dev->unique)
		return -ENOMEM;
	if (copy_from_user(dev->unique, u.unique, dev->unique_len))
		return -EFAULT;

	dev->unique[dev->unique_len] = '\0';

	dev->devname =
	    drm_alloc(strlen(dev->driver->pci_driver.name) +
		      strlen(dev->unique) + 2, DRM_MEM_DRIVER);
	if (!dev->devname)
		return -ENOMEM;

	sprintf(dev->devname, "%s@%s", dev->driver->pci_driver.name,
		dev->unique);

	/* Return error if the busid submitted doesn't match the device's actual
	 * busid.
	 */
	ret = sscanf(dev->unique, "PCI:%d:%d:%d", &bus, &slot, &func);
	if (ret != 3)
		return -EINVAL;
	domain = bus >> 8;
	bus &= 0xff;

	if ((domain != drm_get_pci_domain(dev)) ||
	    (bus != dev->pdev->bus->number) ||
	    (slot != PCI_SLOT(dev->pdev->devfn)) ||
	    (func != PCI_FUNC(dev->pdev->devfn)))
		return -EINVAL;

	return 0;
}

static int drm_set_busid(struct drm_device * dev)
{
	int len;

	if (dev->unique != NULL)
		return 0;

	dev->unique_len = 40;
	dev->unique = drm_alloc(dev->unique_len + 1, DRM_MEM_DRIVER);
	if (dev->unique == NULL)
		return -ENOMEM;

	len = snprintf(dev->unique, dev->unique_len, "pci:%04x:%02x:%02x.%d",
		       drm_get_pci_domain(dev), dev->pdev->bus->number,
		       PCI_SLOT(dev->pdev->devfn),
		       PCI_FUNC(dev->pdev->devfn));

	if (len > dev->unique_len)
		DRM_ERROR("Unique buffer overflowed\n");

	dev->devname =
	    drm_alloc(strlen(dev->driver->pci_driver.name) + dev->unique_len +
		      2, DRM_MEM_DRIVER);
	if (dev->devname == NULL)
		return -ENOMEM;

	sprintf(dev->devname, "%s@%s", dev->driver->pci_driver.name,
		dev->unique);

	return 0;
}

/**
 * Get a mapping information.
 *
 * \param inode device inode.
 * \param file_priv DRM file private.
 * \param cmd command.
 * \param arg user argument, pointing to a drm_map structure.
 *
 * \return zero on success or a negative number on failure.
 *
 * Searches for the mapping with the specified offset and copies its information
 * into userspace
 */
int drm_getmap(struct inode *inode, struct drm_file *file_priv,
	       unsigned int cmd, unsigned long arg)
{
	struct drm_device *dev = file_priv->head->dev;
	struct drm_map __user *argp = (void __user *)arg;
	struct drm_map map;
	struct drm_map_list *r_list = NULL;
	struct list_head *list;
	int idx;
	int i;

	if (copy_from_user(&map, argp, sizeof(map)))
		return -EFAULT;
	idx = map.offset;

	mutex_lock(&dev->struct_mutex);
	if (idx < 0) {
		mutex_unlock(&dev->struct_mutex);
		return -EINVAL;
	}

	i = 0;
	list_for_each(list, &dev->maplist) {
		if (i == idx) {
			r_list = list_entry(list, struct drm_map_list, head);
			break;
		}
		i++;
	}
	if (!r_list || !r_list->map) {
		mutex_unlock(&dev->struct_mutex);
		return -EINVAL;
	}

	map.offset = r_list->map->offset;
	map.size = r_list->map->size;
	map.type = r_list->map->type;
	map.flags = r_list->map->flags;
	map.handle = (void *)(unsigned long)r_list->user_token;
	map.mtrr = r_list->map->mtrr;
	mutex_unlock(&dev->struct_mutex);

	if (copy_to_user(argp, &map, sizeof(map)))
		return -EFAULT;
	return 0;
}

/**
 * Get client information.
 *
 * \param inode device inode.
 * \param file_priv DRM file private.
 * \param cmd command.
 * \param arg user argument, pointing to a drm_client structure.
 *
 * \return zero on success or a negative number on failure.
 *
 * Searches for the client with the specified index and copies its information
 * into userspace
 */
int drm_getclient(struct inode *inode, struct drm_file *file_priv,
		  unsigned int cmd, unsigned long arg)
{
	struct drm_device *dev = file_priv->head->dev;
	struct drm_client __user *argp = (struct drm_client __user *)arg;
	struct drm_client client;
	struct drm_file *pt;
	int idx;
	int i;

	if (copy_from_user(&client, argp, sizeof(client)))
		return -EFAULT;
	idx = client.idx;
	mutex_lock(&dev->struct_mutex);
	
	if (list_empty(&dev->filelist)) {
		mutex_unlock(&dev->struct_mutex);
		return -EINVAL;
	}

	i = 0;
	list_for_each_entry(pt, &dev->filelist, lhead) {
		if (i++ >= idx)
			break;
	}

	client.auth = pt->authenticated;
	client.pid = pt->pid;
	client.uid = pt->uid;
	client.magic = pt->magic;
	client.iocs = pt->ioctl_count;
	mutex_unlock(&dev->struct_mutex);

	if (copy_to_user(argp, &client, sizeof(client)))
		return -EFAULT;
	return 0;
}

/**
 * Get statistics information.
 *
 * \param inode device inode.
 * \param file_priv DRM file private.
 * \param cmd command.
 * \param arg user argument, pointing to a drm_stats structure.
 *
 * \return zero on success or a negative number on failure.
 */
int drm_getstats(struct inode *inode, struct drm_file *file_priv,
		 unsigned int cmd, unsigned long arg)
{
	struct drm_device *dev = file_priv->head->dev;
	struct drm_stats stats;
	int i;

	memset(&stats, 0, sizeof(stats));

	mutex_lock(&dev->struct_mutex);

	for (i = 0; i < dev->counters; i++) {
		if (dev->types[i] == _DRM_STAT_LOCK)
			stats.data[i].value
			    = (dev->lock.hw_lock ? dev->lock.hw_lock->lock : 0);
		else
			stats.data[i].value = atomic_read(&dev->counts[i]);
		stats.data[i].type = dev->types[i];
	}

	stats.count = dev->counters;

	mutex_unlock(&dev->struct_mutex);

	if (copy_to_user((struct drm_stats __user *) arg, &stats, sizeof(stats)))
		return -EFAULT;
	return 0;
}

/**
 * Setversion ioctl.
 *
 * \param inode device inode.
 * \param file_priv DRM file private.
 * \param cmd command.
 * \param arg user argument, pointing to a drm_lock structure.
 * \return zero on success or negative number on failure.
 *
 * Sets the requested interface version
 */
int drm_setversion(DRM_IOCTL_ARGS)
{
	DRM_DEVICE;
	struct drm_set_version sv;
	struct drm_set_version retv;
	int if_version;
	struct drm_set_version __user *argp = (void __user *)data;
	int ret;

	if (copy_from_user(&sv, argp, sizeof(sv)))
		return -EFAULT;

	retv.drm_di_major = DRM_IF_MAJOR;
	retv.drm_di_minor = DRM_IF_MINOR;
	retv.drm_dd_major = dev->driver->major;
	retv.drm_dd_minor = dev->driver->minor;

	if (copy_to_user(argp, &retv, sizeof(retv)))
		return -EFAULT;

	if (sv.drm_di_major != -1) {
		if (sv.drm_di_major != DRM_IF_MAJOR ||
		    sv.drm_di_minor < 0 || sv.drm_di_minor > DRM_IF_MINOR)
			return -EINVAL;
		if_version = DRM_IF_VERSION(sv.drm_di_major, sv.drm_di_minor);
		dev->if_version = max(if_version, dev->if_version);
		if (sv.drm_di_minor >= 1) {
			/*
			 * Version 1.1 includes tying of DRM to specific device
			 */
			ret = drm_set_busid(dev);
			if (ret)
				return ret;
		}
	}

	if (sv.drm_dd_major != -1) {
		if (sv.drm_dd_major != dev->driver->major ||
		    sv.drm_dd_minor < 0
		    || sv.drm_dd_minor > dev->driver->minor)
			return -EINVAL;

		if (dev->driver->set_version)
			dev->driver->set_version(dev, &sv);
	}
	return 0;
}

/** No-op ioctl. */
int drm_noop(struct inode *inode, struct drm_file *file_priv, unsigned int cmd,
	     unsigned long arg)
{
	DRM_DEBUG("\n");
	return 0;
}
Commit	Line	Data
1da177e4	1	/**
b5e89ed5	2	* \file drm_ioctl.c
1da177e4 LT	3	* IOCTL processing for DRM
	4	*
	5	* \author Rickard E. (Rik) Faith <faith@valinux.com>
	6	* \author Gareth Hughes <gareth@valinux.com>
	7	*/
	8
	9	/*
	10	* Created: Fri Jan 8 09:01:26 1999 by faith@valinux.com
	11	*
	12	* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
	13	* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
	14	* All Rights Reserved.
	15	*
	16	* Permission is hereby granted, free of charge, to any person obtaining a
	17	* copy of this software and associated documentation files (the "Software"),
	18	* to deal in the Software without restriction, including without limitation
	19	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	20	* and/or sell copies of the Software, and to permit persons to whom the
	21	* Software is furnished to do so, subject to the following conditions:
	22	*
	23	* The above copyright notice and this permission notice (including the next
	24	* paragraph) shall be included in all copies or substantial portions of the
	25	* Software.
	26	*
	27	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	28	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	29	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	30	* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
	31	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	32	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	33	* OTHER DEALINGS IN THE SOFTWARE.
	34	*/
	35
	36	#include "drmP.h"
	37	#include "drm_core.h"
	38
	39	#include "linux/pci.h"
	40
	41	/**
	42	* Get the bus id.
b5e89ed5	43	*
1da177e4	44	* \param inode device inode.
6c340eac	45	* \param file_priv DRM file private.
1da177e4 LT	46	* \param cmd command.
	47	* \param arg user argument, pointing to a drm_unique structure.
	48	* \return zero on success or a negative number on failure.
	49	*
	50	* Copies the bus id from drm_device::unique into user space.
	51	*/
6c340eac	52	int drm_getunique(struct inode inode, struct drm_file file_priv,
b5e89ed5	53	unsigned int cmd, unsigned long arg)
1da177e4	54	{
6c340eac	55	struct drm_device *dev = file_priv->head->dev;
c60ce623 DA	56	struct drm_unique __user argp = (void __user )arg;
c60ce623 DA	57	struct drm_unique u;
1da177e4 LT	58
	59	if (copy_from_user(&u, argp, sizeof(u)))
	60	return -EFAULT;
	61	if (u.unique_len >= dev->unique_len) {
	62	if (copy_to_user(u.unique, dev->unique, dev->unique_len))
	63	return -EFAULT;
	64	}
	65	u.unique_len = dev->unique_len;
	66	if (copy_to_user(argp, &u, sizeof(u)))
	67	return -EFAULT;
	68	return 0;
	69	}
	70
	71	/**
	72	* Set the bus id.
b5e89ed5	73	*
1da177e4	74	* \param inode device inode.
6c340eac	75	* \param file_priv DRM file private.
1da177e4 LT	76	* \param cmd command.
	77	* \param arg user argument, pointing to a drm_unique structure.
	78	* \return zero on success or a negative number on failure.
	79	*
	80	* Copies the bus id from userspace into drm_device::unique, and verifies that
	81	* it matches the device this DRM is attached to (EINVAL otherwise). Deprecated
	82	* in interface version 1.1 and will return EBUSY when setversion has requested
	83	* version 1.1 or greater.
	84	*/
6c340eac	85	int drm_setunique(struct inode inode, struct drm_file file_priv,
b5e89ed5	86	unsigned int cmd, unsigned long arg)
1da177e4	87	{
6c340eac	88	struct drm_device *dev = file_priv->head->dev;
c60ce623	89	struct drm_unique u;
b5e89ed5	90	int domain, bus, slot, func, ret;
1da177e4	91
b5e89ed5 DA	92	if (dev->unique_len \|\| dev->unique)
b5e89ed5 DA	93	return -EBUSY;
1da177e4	94
c60ce623	95	if (copy_from_user(&u, (struct drm_unique __user *) arg, sizeof(u)))
1da177e4 LT	96	return -EFAULT;
1da177e4 LT	97
b5e89ed5 DA	98	if (!u.unique_len \|\| u.unique_len > 1024)
b5e89ed5 DA	99	return -EINVAL;
1da177e4 LT	100
1da177e4 LT	101	dev->unique_len = u.unique_len;
b5e89ed5 DA	102	dev->unique = drm_alloc(u.unique_len + 1, DRM_MEM_DRIVER);
	103	if (!dev->unique)
	104	return -ENOMEM;
1da177e4 LT	105	if (copy_from_user(dev->unique, u.unique, dev->unique_len))
	106	return -EFAULT;
	107
	108	dev->unique[dev->unique_len] = '\0';
	109
b5e89ed5 DA	110	dev->devname =
	111	drm_alloc(strlen(dev->driver->pci_driver.name) +
	112	strlen(dev->unique) + 2, DRM_MEM_DRIVER);
1da177e4 LT	113	if (!dev->devname)
	114	return -ENOMEM;
	115
b5e89ed5 DA	116	sprintf(dev->devname, "%s@%s", dev->driver->pci_driver.name,
b5e89ed5 DA	117	dev->unique);
1da177e4 LT	118
	119	/* Return error if the busid submitted doesn't match the device's actual
	120	* busid.
	121	*/
	122	ret = sscanf(dev->unique, "PCI:%d:%d:%d", &bus, &slot, &func);
	123	if (ret != 3)
20caafa6	124	return -EINVAL;
1da177e4 LT	125	domain = bus >> 8;
1da177e4 LT	126	bus &= 0xff;
b5e89ed5	127
33229601	128	if ((domain != drm_get_pci_domain(dev)) \|\|
242ef0e1 D	129	(bus != dev->pdev->bus->number) \|\|
	130	(slot != PCI_SLOT(dev->pdev->devfn)) \|\|
	131	(func != PCI_FUNC(dev->pdev->devfn)))
1da177e4 LT	132	return -EINVAL;
	133
	134	return 0;
	135	}
	136
84b1fd10	137	static int drm_set_busid(struct drm_device * dev)
1da177e4	138	{
fe34765b DA	139	int len;
fe34765b DA	140
1da177e4	141	if (dev->unique != NULL)
1f27ce6a	142	return 0;
1da177e4	143
fe34765b	144	dev->unique_len = 40;
1da177e4 LT	145	dev->unique = drm_alloc(dev->unique_len + 1, DRM_MEM_DRIVER);
1da177e4 LT	146	if (dev->unique == NULL)
1f27ce6a	147	return -ENOMEM;
1da177e4	148
fe34765b	149	len = snprintf(dev->unique, dev->unique_len, "pci:%04x:%02x:%02x.%d",
33229601	150	drm_get_pci_domain(dev), dev->pdev->bus->number,
242ef0e1 D	151	PCI_SLOT(dev->pdev->devfn),
242ef0e1 D	152	PCI_FUNC(dev->pdev->devfn));
1da177e4	153
fe34765b DA	154	if (len > dev->unique_len)
	155	DRM_ERROR("Unique buffer overflowed\n");
	156
b5e89ed5 DA	157	dev->devname =
	158	drm_alloc(strlen(dev->driver->pci_driver.name) + dev->unique_len +
	159	2, DRM_MEM_DRIVER);
1da177e4	160	if (dev->devname == NULL)
1f27ce6a	161	return -ENOMEM;
1da177e4	162
b5e89ed5 DA	163	sprintf(dev->devname, "%s@%s", dev->driver->pci_driver.name,
b5e89ed5 DA	164	dev->unique);
1da177e4 LT	165
	166	return 0;
	167	}
	168
1da177e4 LT	169	/**
	170	* Get a mapping information.
	171	*
	172	* \param inode device inode.
6c340eac	173	* \param file_priv DRM file private.
1da177e4 LT	174	* \param cmd command.
1da177e4 LT	175	* \param arg user argument, pointing to a drm_map structure.
b5e89ed5	176	*
1da177e4 LT	177	* \return zero on success or a negative number on failure.
	178	*
	179	* Searches for the mapping with the specified offset and copies its information
	180	* into userspace
	181	*/
6c340eac	182	int drm_getmap(struct inode inode, struct drm_file file_priv,
b5e89ed5	183	unsigned int cmd, unsigned long arg)
1da177e4	184	{
6c340eac	185	struct drm_device *dev = file_priv->head->dev;
c60ce623 DA	186	struct drm_map __user argp = (void __user )arg;
c60ce623 DA	187	struct drm_map map;
55910517	188	struct drm_map_list *r_list = NULL;
1da177e4	189	struct list_head *list;
b5e89ed5 DA	190	int idx;
b5e89ed5 DA	191	int i;
1da177e4 LT	192
	193	if (copy_from_user(&map, argp, sizeof(map)))
	194	return -EFAULT;
	195	idx = map.offset;
	196
30e2fb18	197	mutex_lock(&dev->struct_mutex);
1da177e4	198	if (idx < 0) {
30e2fb18	199	mutex_unlock(&dev->struct_mutex);
1da177e4 LT	200	return -EINVAL;
	201	}
	202
	203	i = 0;
bd1b331f	204	list_for_each(list, &dev->maplist) {
b5e89ed5	205	if (i == idx) {
55910517	206	r_list = list_entry(list, struct drm_map_list, head);
1da177e4 LT	207	break;
	208	}
	209	i++;
	210	}
b5e89ed5	211	if (!r_list \|\| !r_list->map) {
30e2fb18	212	mutex_unlock(&dev->struct_mutex);
1da177e4 LT	213	return -EINVAL;
	214	}
	215
	216	map.offset = r_list->map->offset;
b5e89ed5 DA	217	map.size = r_list->map->size;
	218	map.type = r_list->map->type;
	219	map.flags = r_list->map->flags;
	220	map.handle = (void *)(unsigned long)r_list->user_token;
	221	map.mtrr = r_list->map->mtrr;
30e2fb18	222	mutex_unlock(&dev->struct_mutex);
1da177e4	223
b5e89ed5 DA	224	if (copy_to_user(argp, &map, sizeof(map)))
b5e89ed5 DA	225	return -EFAULT;
1da177e4 LT	226	return 0;
	227	}
	228
	229	/**
	230	* Get client information.
	231	*
	232	* \param inode device inode.
6c340eac	233	* \param file_priv DRM file private.
1da177e4 LT	234	* \param cmd command.
1da177e4 LT	235	* \param arg user argument, pointing to a drm_client structure.
b5e89ed5	236	*
1da177e4 LT	237	* \return zero on success or a negative number on failure.
	238	*
	239	* Searches for the client with the specified index and copies its information
	240	* into userspace
	241	*/
6c340eac	242	int drm_getclient(struct inode inode, struct drm_file file_priv,
b5e89ed5	243	unsigned int cmd, unsigned long arg)
1da177e4	244	{
6c340eac	245	struct drm_device *dev = file_priv->head->dev;
c60ce623 DA	246	struct drm_client __user argp = (struct drm_client __user )arg;
c60ce623 DA	247	struct drm_client client;
84b1fd10	248	struct drm_file *pt;
b5e89ed5 DA	249	int idx;
b5e89ed5 DA	250	int i;
1da177e4 LT	251
	252	if (copy_from_user(&client, argp, sizeof(client)))
	253	return -EFAULT;
	254	idx = client.idx;
30e2fb18	255	mutex_lock(&dev->struct_mutex);
bd1b331f DA	256
bd1b331f DA	257	if (list_empty(&dev->filelist)) {
30e2fb18	258	mutex_unlock(&dev->struct_mutex);
1da177e4 LT	259	return -EINVAL;
1da177e4 LT	260	}
bd1b331f DA	261
	262	i = 0;
	263	list_for_each_entry(pt, &dev->filelist, lhead) {
	264	if (i++ >= idx)
	265	break;
	266	}
	267
b5e89ed5 DA	268	client.auth = pt->authenticated;
	269	client.pid = pt->pid;
	270	client.uid = pt->uid;
1da177e4	271	client.magic = pt->magic;
b5e89ed5	272	client.iocs = pt->ioctl_count;
30e2fb18	273	mutex_unlock(&dev->struct_mutex);
1da177e4	274
fe34765b	275	if (copy_to_user(argp, &client, sizeof(client)))
1da177e4 LT	276	return -EFAULT;
	277	return 0;
	278	}
	279
b5e89ed5 DA	280	/**
	281	* Get statistics information.
	282	*
1da177e4	283	* \param inode device inode.
6c340eac	284	* \param file_priv DRM file private.
1da177e4 LT	285	* \param cmd command.
1da177e4 LT	286	* \param arg user argument, pointing to a drm_stats structure.
b5e89ed5	287	*
1da177e4 LT	288	* \return zero on success or a negative number on failure.
1da177e4 LT	289	*/
6c340eac	290	int drm_getstats(struct inode inode, struct drm_file file_priv,
b5e89ed5	291	unsigned int cmd, unsigned long arg)
1da177e4	292	{
6c340eac	293	struct drm_device *dev = file_priv->head->dev;
c60ce623	294	struct drm_stats stats;
b5e89ed5	295	int i;
1da177e4 LT	296
1da177e4 LT	297	memset(&stats, 0, sizeof(stats));
b5e89ed5	298
30e2fb18	299	mutex_lock(&dev->struct_mutex);
1da177e4 LT	300
	301	for (i = 0; i < dev->counters; i++) {
	302	if (dev->types[i] == _DRM_STAT_LOCK)
	303	stats.data[i].value
b5e89ed5 DA	304	= (dev->lock.hw_lock ? dev->lock.hw_lock->lock : 0);
b5e89ed5 DA	305	else
1da177e4	306	stats.data[i].value = atomic_read(&dev->counts[i]);
b5e89ed5	307	stats.data[i].type = dev->types[i];
1da177e4	308	}
b5e89ed5	309
1da177e4 LT	310	stats.count = dev->counters;
1da177e4 LT	311
30e2fb18	312	mutex_unlock(&dev->struct_mutex);
1da177e4	313
c60ce623	314	if (copy_to_user((struct drm_stats __user *) arg, &stats, sizeof(stats)))
1da177e4 LT	315	return -EFAULT;
	316	return 0;
	317	}
	318
	319	/**
	320	* Setversion ioctl.
	321	*
	322	* \param inode device inode.
6c340eac	323	* \param file_priv DRM file private.
1da177e4 LT	324	* \param cmd command.
	325	* \param arg user argument, pointing to a drm_lock structure.
	326	* \return zero on success or negative number on failure.
	327	*
	328	* Sets the requested interface version
	329	*/
	330	int drm_setversion(DRM_IOCTL_ARGS)
	331	{
	332	DRM_DEVICE;
c60ce623 DA	333	struct drm_set_version sv;
c60ce623 DA	334	struct drm_set_version retv;
1da177e4	335	int if_version;
c60ce623	336	struct drm_set_version __user argp = (void __user )data;
1f27ce6a	337	int ret;
1da177e4	338
3d77461e DA	339	if (copy_from_user(&sv, argp, sizeof(sv)))
3d77461e DA	340	return -EFAULT;
1da177e4	341
1da177e4 LT	342	retv.drm_di_major = DRM_IF_MAJOR;
1da177e4 LT	343	retv.drm_di_minor = DRM_IF_MINOR;
22eae947 DA	344	retv.drm_dd_major = dev->driver->major;
22eae947 DA	345	retv.drm_dd_minor = dev->driver->minor;
1da177e4	346
1f27ce6a	347	if (copy_to_user(argp, &retv, sizeof(retv)))
3d77461e	348	return -EFAULT;
1da177e4 LT	349
	350	if (sv.drm_di_major != -1) {
	351	if (sv.drm_di_major != DRM_IF_MAJOR \|\|
	352	sv.drm_di_minor < 0 \|\| sv.drm_di_minor > DRM_IF_MINOR)
1f27ce6a	353	return -EINVAL;
fe34765b	354	if_version = DRM_IF_VERSION(sv.drm_di_major, sv.drm_di_minor);
3d77461e	355	dev->if_version = max(if_version, dev->if_version);
1da177e4 LT	356	if (sv.drm_di_minor >= 1) {
	357	/*
	358	* Version 1.1 includes tying of DRM to specific device
	359	*/
1f27ce6a DA	360	ret = drm_set_busid(dev);
	361	if (ret)
	362	return ret;
1da177e4 LT	363	}
	364	}
	365
	366	if (sv.drm_dd_major != -1) {
22eae947	367	if (sv.drm_dd_major != dev->driver->major \|\|
b5e89ed5	368	sv.drm_dd_minor < 0
22eae947	369	\|\| sv.drm_dd_minor > dev->driver->minor)
1f27ce6a	370	return -EINVAL;
1da177e4 LT	371
	372	if (dev->driver->set_version)
	373	dev->driver->set_version(dev, &sv);
	374	}
	375	return 0;
	376	}
	377
	378	/** No-op ioctl. */
6c340eac	379	int drm_noop(struct inode inode, struct drm_file file_priv, unsigned int cmd,
b5e89ed5	380	unsigned long arg)
1da177e4 LT	381	{
	382	DRM_DEBUG("\n");
	383	return 0;
	384	}