[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / gpu / 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 drm_device *dev, void *data,
		  struct drm_file *file_priv)
{
	struct drm_unique *u = data;
	struct drm_master *master = file_priv->master;

	if (u->unique_len >= master->unique_len) {
		if (copy_to_user(u->unique, master->unique, master->unique_len))
			return -EFAULT;
	}
	u->unique_len = master->unique_len;

	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 drm_device *dev, void *data,
		  struct drm_file *file_priv)
{
	struct drm_unique *u = data;
	struct drm_master *master = file_priv->master;
	int domain, bus, slot, func, ret;

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

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

	master->unique_len = u->unique_len;
	master->unique_size = u->unique_len + 1;
	master->unique = kmalloc(master->unique_size, GFP_KERNEL);
	if (!master->unique)
		return -ENOMEM;
	if (copy_from_user(master->unique, u->unique, master->unique_len))
		return -EFAULT;

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

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

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

	/* Return error if the busid submitted doesn't match the device's actual
	 * busid.
	 */
	ret = sscanf(master->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, struct drm_file *file_priv)
{
	struct drm_master *master = file_priv->master;
	int len;

	if (drm_core_check_feature(dev, DRIVER_USE_PLATFORM_DEVICE)) {
		master->unique_len = 10 + strlen(dev->platformdev->name);
		master->unique = kmalloc(master->unique_len + 1, GFP_KERNEL);

		if (master->unique == NULL)
			return -ENOMEM;

		len = snprintf(master->unique, master->unique_len,
			"platform:%s", dev->platformdev->name);

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

		dev->devname =
			kmalloc(strlen(dev->platformdev->name) +
				master->unique_len + 2, GFP_KERNEL);

		if (dev->devname == NULL)
			return -ENOMEM;

		sprintf(dev->devname, "%s@%s", dev->platformdev->name,
			master->unique);

	} else {
		master->unique_len = 40;
		master->unique_size = master->unique_len;
		master->unique = kmalloc(master->unique_size, GFP_KERNEL);
		if (master->unique == NULL)
			return -ENOMEM;

		len = snprintf(master->unique, master->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 >= master->unique_len)
			DRM_ERROR("buffer overflow");
		else
			master->unique_len = len;

		dev->devname =
			kmalloc(strlen(dev->driver->pci_driver.name) +
				master->unique_len + 2, GFP_KERNEL);

		if (dev->devname == NULL)
			return -ENOMEM;

		sprintf(dev->devname, "%s@%s", dev->driver->pci_driver.name,
			master->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 drm_device *dev, void *data,
	       struct drm_file *file_priv)
{
	struct drm_map *map = data;
	struct drm_map_list *r_list = NULL;
	struct list_head *list;
	int idx;
	int i;

	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);

	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 drm_device *dev, void *data,
		  struct drm_file *file_priv)
{
	struct drm_client *client = data;
	struct drm_file *pt;
	int idx;
	int i;

	idx = client->idx;
	mutex_lock(&dev->struct_mutex);

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

			return 0;
		}
	}
	mutex_unlock(&dev->struct_mutex);

	return -EINVAL;
}

/**
 * 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 drm_device *dev, void *data,
		 struct drm_file *file_priv)
{
	struct drm_stats *stats = data;
	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 =
			    (file_priv->master->lock.hw_lock ? file_priv->master->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);

	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(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
	struct drm_set_version *sv = data;
	int if_version, retcode = 0;

	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) {
			retcode = -EINVAL;
			goto done;
		}
		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
			 */
			drm_set_busid(dev, file_priv);
		}
	}

	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) {
			retcode = -EINVAL;
			goto done;
		}

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

done:
	sv->drm_di_major = DRM_IF_MAJOR;
	sv->drm_di_minor = DRM_IF_MINOR;
	sv->drm_dd_major = dev->driver->major;
	sv->drm_dd_minor = dev->driver->minor;

	return retcode;
}

/** No-op ioctl. */
int drm_noop(struct drm_device *dev, void *data,
	     struct drm_file *file_priv)
{
	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	*/
c153f45f EA	52	int drm_getunique(struct drm_device dev, void data,
c153f45f EA	53	struct drm_file *file_priv)
1da177e4	54	{
c153f45f	55	struct drm_unique *u = data;
7c1c2871	56	struct drm_master *master = file_priv->master;
1da177e4	57
7c1c2871 DA	58	if (u->unique_len >= master->unique_len) {
7c1c2871 DA	59	if (copy_to_user(u->unique, master->unique, master->unique_len))
1da177e4 LT	60	return -EFAULT;
1da177e4 LT	61	}
7c1c2871	62	u->unique_len = master->unique_len;
c153f45f	63
1da177e4 LT	64	return 0;
	65	}
	66
	67	/**
	68	* Set the bus id.
b5e89ed5	69	*
1da177e4	70	* \param inode device inode.
6c340eac	71	* \param file_priv DRM file private.
1da177e4 LT	72	* \param cmd command.
	73	* \param arg user argument, pointing to a drm_unique structure.
	74	* \return zero on success or a negative number on failure.
	75	*
	76	* Copies the bus id from userspace into drm_device::unique, and verifies that
	77	* it matches the device this DRM is attached to (EINVAL otherwise). Deprecated
	78	* in interface version 1.1 and will return EBUSY when setversion has requested
	79	* version 1.1 or greater.
	80	*/
c153f45f EA	81	int drm_setunique(struct drm_device dev, void data,
c153f45f EA	82	struct drm_file *file_priv)
1da177e4	83	{
c153f45f	84	struct drm_unique *u = data;
7c1c2871	85	struct drm_master *master = file_priv->master;
b5e89ed5	86	int domain, bus, slot, func, ret;
1da177e4	87
7c1c2871	88	if (master->unique_len \|\| master->unique)
b5e89ed5	89	return -EBUSY;
1da177e4	90
c153f45f	91	if (!u->unique_len \|\| u->unique_len > 1024)
b5e89ed5	92	return -EINVAL;
1da177e4	93
7c1c2871	94	master->unique_len = u->unique_len;
1147c9cd	95	master->unique_size = u->unique_len + 1;
9a298b2a	96	master->unique = kmalloc(master->unique_size, GFP_KERNEL);
7c1c2871	97	if (!master->unique)
b5e89ed5	98	return -ENOMEM;
7c1c2871	99	if (copy_from_user(master->unique, u->unique, master->unique_len))
1da177e4 LT	100	return -EFAULT;
1da177e4 LT	101
7c1c2871	102	master->unique[master->unique_len] = '\0';
1da177e4	103
9a298b2a EA	104	dev->devname = kmalloc(strlen(dev->driver->pci_driver.name) +
9a298b2a EA	105	strlen(master->unique) + 2, GFP_KERNEL);
1da177e4 LT	106	if (!dev->devname)
	107	return -ENOMEM;
	108
b5e89ed5	109	sprintf(dev->devname, "%s@%s", dev->driver->pci_driver.name,
7c1c2871	110	master->unique);
1da177e4 LT	111
	112	/* Return error if the busid submitted doesn't match the device's actual
	113	* busid.
	114	*/
7c1c2871	115	ret = sscanf(master->unique, "PCI:%d:%d:%d", &bus, &slot, &func);
1da177e4	116	if (ret != 3)
20caafa6	117	return -EINVAL;
1da177e4 LT	118	domain = bus >> 8;
1da177e4 LT	119	bus &= 0xff;
b5e89ed5	120
33229601	121	if ((domain != drm_get_pci_domain(dev)) \|\|
242ef0e1 D	122	(bus != dev->pdev->bus->number) \|\|
	123	(slot != PCI_SLOT(dev->pdev->devfn)) \|\|
	124	(func != PCI_FUNC(dev->pdev->devfn)))
1da177e4 LT	125	return -EINVAL;
	126
	127	return 0;
	128	}
	129
7c1c2871	130	static int drm_set_busid(struct drm_device dev, struct drm_file file_priv)
1da177e4	131	{
7c1c2871	132	struct drm_master *master = file_priv->master;
fe34765b DA	133	int len;
fe34765b DA	134
dcdb1674 JC	135	if (drm_core_check_feature(dev, DRIVER_USE_PLATFORM_DEVICE)) {
	136	master->unique_len = 10 + strlen(dev->platformdev->name);
	137	master->unique = kmalloc(master->unique_len + 1, GFP_KERNEL);
	138
	139	if (master->unique == NULL)
	140	return -ENOMEM;
	141
	142	len = snprintf(master->unique, master->unique_len,
	143	"platform:%s", dev->platformdev->name);
	144
	145	if (len > master->unique_len)
	146	DRM_ERROR("Unique buffer overflowed\n");
	147
	148	dev->devname =
	149	kmalloc(strlen(dev->platformdev->name) +
	150	master->unique_len + 2, GFP_KERNEL);
	151
	152	if (dev->devname == NULL)
	153	return -ENOMEM;
	154
	155	sprintf(dev->devname, "%s@%s", dev->platformdev->name,
	156	master->unique);
	157
	158	} else {
	159	master->unique_len = 40;
	160	master->unique_size = master->unique_len;
	161	master->unique = kmalloc(master->unique_size, GFP_KERNEL);
	162	if (master->unique == NULL)
	163	return -ENOMEM;
	164
	165	len = snprintf(master->unique, master->unique_len,
	166	"pci:%04x:%02x:%02x.%d",
	167	drm_get_pci_domain(dev),
	168	dev->pdev->bus->number,
	169	PCI_SLOT(dev->pdev->devfn),
	170	PCI_FUNC(dev->pdev->devfn));
	171	if (len >= master->unique_len)
	172	DRM_ERROR("buffer overflow");
	173	else
	174	master->unique_len = len;
	175
	176	dev->devname =
	177	kmalloc(strlen(dev->driver->pci_driver.name) +
	178	master->unique_len + 2, GFP_KERNEL);
	179
	180	if (dev->devname == NULL)
	181	return -ENOMEM;
	182
	183	sprintf(dev->devname, "%s@%s", dev->driver->pci_driver.name,
	184	master->unique);
	185	}
1da177e4 LT	186
	187	return 0;
	188	}
	189
1da177e4 LT	190	/**
	191	* Get a mapping information.
	192	*
	193	* \param inode device inode.
6c340eac	194	* \param file_priv DRM file private.
1da177e4 LT	195	* \param cmd command.
1da177e4 LT	196	* \param arg user argument, pointing to a drm_map structure.
b5e89ed5	197	*
1da177e4 LT	198	* \return zero on success or a negative number on failure.
	199	*
	200	* Searches for the mapping with the specified offset and copies its information
	201	* into userspace
	202	*/
c153f45f EA	203	int drm_getmap(struct drm_device dev, void data,
c153f45f EA	204	struct drm_file *file_priv)
1da177e4	205	{
c153f45f	206	struct drm_map *map = data;
55910517	207	struct drm_map_list *r_list = NULL;
1da177e4	208	struct list_head *list;
b5e89ed5 DA	209	int idx;
b5e89ed5 DA	210	int i;
1da177e4	211
c153f45f	212	idx = map->offset;
1da177e4	213
30e2fb18	214	mutex_lock(&dev->struct_mutex);
1da177e4	215	if (idx < 0) {
30e2fb18	216	mutex_unlock(&dev->struct_mutex);
1da177e4 LT	217	return -EINVAL;
	218	}
	219
	220	i = 0;
bd1b331f	221	list_for_each(list, &dev->maplist) {
b5e89ed5	222	if (i == idx) {
55910517	223	r_list = list_entry(list, struct drm_map_list, head);
1da177e4 LT	224	break;
	225	}
	226	i++;
	227	}
b5e89ed5	228	if (!r_list \|\| !r_list->map) {
30e2fb18	229	mutex_unlock(&dev->struct_mutex);
1da177e4 LT	230	return -EINVAL;
	231	}
	232
c153f45f EA	233	map->offset = r_list->map->offset;
	234	map->size = r_list->map->size;
	235	map->type = r_list->map->type;
	236	map->flags = r_list->map->flags;
	237	map->handle = (void *)(unsigned long) r_list->user_token;
	238	map->mtrr = r_list->map->mtrr;
30e2fb18	239	mutex_unlock(&dev->struct_mutex);
1da177e4	240
1da177e4 LT	241	return 0;
	242	}
	243
	244	/**
	245	* Get client information.
	246	*
	247	* \param inode device inode.
6c340eac	248	* \param file_priv DRM file private.
1da177e4 LT	249	* \param cmd command.
1da177e4 LT	250	* \param arg user argument, pointing to a drm_client structure.
b5e89ed5	251	*
1da177e4 LT	252	* \return zero on success or a negative number on failure.
	253	*
	254	* Searches for the client with the specified index and copies its information
	255	* into userspace
	256	*/
c153f45f EA	257	int drm_getclient(struct drm_device dev, void data,
c153f45f EA	258	struct drm_file *file_priv)
1da177e4	259	{
c153f45f	260	struct drm_client *client = data;
84b1fd10	261	struct drm_file *pt;
b5e89ed5 DA	262	int idx;
b5e89ed5 DA	263	int i;
1da177e4	264
c153f45f	265	idx = client->idx;
30e2fb18	266	mutex_lock(&dev->struct_mutex);
bc5f4523	267
bd1b331f DA	268	i = 0;
bd1b331f DA	269	list_for_each_entry(pt, &dev->filelist, lhead) {
b018fcda EA	270	if (i++ >= idx) {
	271	client->auth = pt->authenticated;
	272	client->pid = pt->pid;
	273	client->uid = pt->uid;
	274	client->magic = pt->magic;
	275	client->iocs = pt->ioctl_count;
	276	mutex_unlock(&dev->struct_mutex);
	277
	278	return 0;
	279	}
bd1b331f	280	}
30e2fb18	281	mutex_unlock(&dev->struct_mutex);
1da177e4	282
b018fcda	283	return -EINVAL;
1da177e4 LT	284	}
1da177e4 LT	285
b5e89ed5 DA	286	/**
	287	* Get statistics information.
	288	*
1da177e4	289	* \param inode device inode.
6c340eac	290	* \param file_priv DRM file private.
1da177e4 LT	291	* \param cmd command.
1da177e4 LT	292	* \param arg user argument, pointing to a drm_stats structure.
b5e89ed5	293	*
1da177e4 LT	294	* \return zero on success or a negative number on failure.
1da177e4 LT	295	*/
c153f45f EA	296	int drm_getstats(struct drm_device dev, void data,
c153f45f EA	297	struct drm_file *file_priv)
1da177e4	298	{
c153f45f	299	struct drm_stats *stats = data;
b5e89ed5	300	int i;
1da177e4	301
246a3d18	302	memset(stats, 0, sizeof(*stats));
b5e89ed5	303
30e2fb18	304	mutex_lock(&dev->struct_mutex);
1da177e4 LT	305
	306	for (i = 0; i < dev->counters; i++) {
	307	if (dev->types[i] == _DRM_STAT_LOCK)
c153f45f	308	stats->data[i].value =
7c1c2871	309	(file_priv->master->lock.hw_lock ? file_priv->master->lock.hw_lock->lock : 0);
b5e89ed5	310	else
c153f45f EA	311	stats->data[i].value = atomic_read(&dev->counts[i]);
c153f45f EA	312	stats->data[i].type = dev->types[i];
1da177e4	313	}
b5e89ed5	314
c153f45f	315	stats->count = dev->counters;
1da177e4	316
30e2fb18	317	mutex_unlock(&dev->struct_mutex);
1da177e4	318
1da177e4 LT	319	return 0;
	320	}
	321
	322	/**
	323	* Setversion ioctl.
	324	*
	325	* \param inode device inode.
6c340eac	326	* \param file_priv DRM file private.
1da177e4 LT	327	* \param cmd command.
	328	* \param arg user argument, pointing to a drm_lock structure.
	329	* \return zero on success or negative number on failure.
	330	*
	331	* Sets the requested interface version
	332	*/
c153f45f	333	int drm_setversion(struct drm_device dev, void data, struct drm_file *file_priv)
1da177e4	334	{
c153f45f EA	335	struct drm_set_version *sv = data;
	336	int if_version, retcode = 0;
	337
	338	if (sv->drm_di_major != -1) {
	339	if (sv->drm_di_major != DRM_IF_MAJOR \|\|
	340	sv->drm_di_minor < 0 \|\| sv->drm_di_minor > DRM_IF_MINOR) {
	341	retcode = -EINVAL;
	342	goto done;
	343	}
	344	if_version = DRM_IF_VERSION(sv->drm_di_major,
	345	sv->drm_di_minor);
3d77461e	346	dev->if_version = max(if_version, dev->if_version);
c153f45f	347	if (sv->drm_di_minor >= 1) {
1da177e4 LT	348	/*
	349	* Version 1.1 includes tying of DRM to specific device
	350	*/
7c1c2871	351	drm_set_busid(dev, file_priv);
1da177e4 LT	352	}
	353	}
	354
c153f45f EA	355	if (sv->drm_dd_major != -1) {
	356	if (sv->drm_dd_major != dev->driver->major \|\|
	357	sv->drm_dd_minor < 0 \|\| sv->drm_dd_minor >
	358	dev->driver->minor) {
	359	retcode = -EINVAL;
	360	goto done;
	361	}
1da177e4 LT	362
1da177e4 LT	363	if (dev->driver->set_version)
c153f45f	364	dev->driver->set_version(dev, sv);
1da177e4	365	}
c153f45f EA	366
	367	done:
	368	sv->drm_di_major = DRM_IF_MAJOR;
	369	sv->drm_di_minor = DRM_IF_MINOR;
	370	sv->drm_dd_major = dev->driver->major;
	371	sv->drm_dd_minor = dev->driver->minor;
	372
	373	return retcode;
1da177e4 LT	374	}
	375
	376	/** No-op ioctl. */
c153f45f EA	377	int drm_noop(struct drm_device dev, void data,
c153f45f EA	378	struct drm_file *file_priv)
1da177e4 LT	379	{
	380	DRM_DEBUG("\n");
	381	return 0;
	382	}