2005-04-16 16:20:36 -06:00
|
|
|
/**
|
2005-09-24 22:28:13 -06:00
|
|
|
* \file drm_ioctl.c
|
2005-04-16 16:20:36 -06:00
|
|
|
* 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,
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|
|
|
* 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
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|
|
|
* OTHER DEALINGS IN THE SOFTWARE.
|
|
|
|
*/
|
|
|
|
|
2012-10-02 11:01:07 -06:00
|
|
|
#include <drm/drmP.h>
|
|
|
|
#include <drm/drm_core.h>
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2012-10-02 11:01:07 -06:00
|
|
|
#include <linux/pci.h>
|
|
|
|
#include <linux/export.h>
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Get the bus id.
|
2005-09-24 22:28:13 -06:00
|
|
|
*
|
2005-04-16 16:20:36 -06:00
|
|
|
* \param inode device inode.
|
2007-08-25 04:23:09 -06:00
|
|
|
* \param file_priv DRM file private.
|
2005-04-16 16:20:36 -06:00
|
|
|
* \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.
|
|
|
|
*/
|
2007-09-02 20:06:45 -06:00
|
|
|
int drm_getunique(struct drm_device *dev, void *data,
|
|
|
|
struct drm_file *file_priv)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2007-09-02 20:06:45 -06:00
|
|
|
struct drm_unique *u = data;
|
2008-11-27 21:22:24 -07:00
|
|
|
struct drm_master *master = file_priv->master;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2008-11-27 21:22:24 -07:00
|
|
|
if (u->unique_len >= master->unique_len) {
|
|
|
|
if (copy_to_user(u->unique, master->unique, master->unique_len))
|
2005-04-16 16:20:36 -06:00
|
|
|
return -EFAULT;
|
|
|
|
}
|
2008-11-27 21:22:24 -07:00
|
|
|
u->unique_len = master->unique_len;
|
2007-09-02 20:06:45 -06:00
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2010-08-04 04:09:42 -06:00
|
|
|
static void
|
|
|
|
drm_unset_busid(struct drm_device *dev,
|
|
|
|
struct drm_master *master)
|
|
|
|
{
|
|
|
|
kfree(dev->devname);
|
|
|
|
dev->devname = NULL;
|
|
|
|
|
|
|
|
kfree(master->unique);
|
|
|
|
master->unique = NULL;
|
|
|
|
master->unique_len = 0;
|
|
|
|
master->unique_size = 0;
|
|
|
|
}
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
/**
|
|
|
|
* Set the bus id.
|
2005-09-24 22:28:13 -06:00
|
|
|
*
|
2005-04-16 16:20:36 -06:00
|
|
|
* \param inode device inode.
|
2007-08-25 04:23:09 -06:00
|
|
|
* \param file_priv DRM file private.
|
2005-04-16 16:20:36 -06:00
|
|
|
* \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.
|
|
|
|
*/
|
2007-09-02 20:06:45 -06:00
|
|
|
int drm_setunique(struct drm_device *dev, void *data,
|
|
|
|
struct drm_file *file_priv)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2007-09-02 20:06:45 -06:00
|
|
|
struct drm_unique *u = data;
|
2008-11-27 21:22:24 -07:00
|
|
|
struct drm_master *master = file_priv->master;
|
2010-12-14 10:16:38 -07:00
|
|
|
int ret;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2008-11-27 21:22:24 -07:00
|
|
|
if (master->unique_len || master->unique)
|
2005-09-24 22:28:13 -06:00
|
|
|
return -EBUSY;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-09-02 20:06:45 -06:00
|
|
|
if (!u->unique_len || u->unique_len > 1024)
|
2005-09-24 22:28:13 -06:00
|
|
|
return -EINVAL;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2010-12-14 10:16:38 -07:00
|
|
|
if (!dev->driver->bus->set_unique)
|
|
|
|
return -EINVAL;
|
2005-09-24 22:28:13 -06:00
|
|
|
|
2010-12-14 10:16:38 -07:00
|
|
|
ret = dev->driver->bus->set_unique(dev, master, u);
|
|
|
|
if (ret)
|
2010-08-04 04:09:42 -06:00
|
|
|
goto err;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
return 0;
|
2010-08-04 04:09:42 -06:00
|
|
|
|
|
|
|
err:
|
|
|
|
drm_unset_busid(dev, master);
|
|
|
|
return ret;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
2008-11-27 21:22:24 -07:00
|
|
|
static int drm_set_busid(struct drm_device *dev, struct drm_file *file_priv)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2008-11-27 21:22:24 -07:00
|
|
|
struct drm_master *master = file_priv->master;
|
2010-12-14 10:16:38 -07:00
|
|
|
int ret;
|
2010-08-04 04:09:42 -06:00
|
|
|
|
|
|
|
if (master->unique != NULL)
|
|
|
|
drm_unset_busid(dev, master);
|
2006-01-02 03:19:39 -07:00
|
|
|
|
2010-12-14 10:16:38 -07:00
|
|
|
ret = dev->driver->bus->set_busid(dev, master);
|
|
|
|
if (ret)
|
|
|
|
goto err;
|
2005-04-16 16:20:36 -06:00
|
|
|
return 0;
|
2010-08-04 04:09:42 -06:00
|
|
|
err:
|
|
|
|
drm_unset_busid(dev, master);
|
|
|
|
return ret;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Get a mapping information.
|
|
|
|
*
|
|
|
|
* \param inode device inode.
|
2007-08-25 04:23:09 -06:00
|
|
|
* \param file_priv DRM file private.
|
2005-04-16 16:20:36 -06:00
|
|
|
* \param cmd command.
|
|
|
|
* \param arg user argument, pointing to a drm_map structure.
|
2005-09-24 22:28:13 -06:00
|
|
|
*
|
2005-04-16 16:20:36 -06:00
|
|
|
* \return zero on success or a negative number on failure.
|
|
|
|
*
|
|
|
|
* Searches for the mapping with the specified offset and copies its information
|
|
|
|
* into userspace
|
|
|
|
*/
|
2007-09-02 20:06:45 -06:00
|
|
|
int drm_getmap(struct drm_device *dev, void *data,
|
|
|
|
struct drm_file *file_priv)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2007-09-02 20:06:45 -06:00
|
|
|
struct drm_map *map = data;
|
2007-07-11 00:53:40 -06:00
|
|
|
struct drm_map_list *r_list = NULL;
|
2005-04-16 16:20:36 -06:00
|
|
|
struct list_head *list;
|
2005-09-24 22:28:13 -06:00
|
|
|
int idx;
|
|
|
|
int i;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-09-02 20:06:45 -06:00
|
|
|
idx = map->offset;
|
drm: make DRM_UNLOCKED ioctls with their own mutex
drm_getclient, drm_getstats and drm_getmap (with a few minor
adjustments) do not need global mutex, so fix that and
make the said ioctls DRM_UNLOCKED. Details:
drm_getclient: the only thing that should be protected here
is dev->filelist and that is already protected everywhere with
dev->struct_mutex.
drm_getstats: there is no need for any mutex here because the
loop runs through quasi-static (set at load time only)
data, and the actual count access is done with atomic_read()
drm_getmap already uses dev->struct_mutex to protect
dev->maplist, which also used to protect the same structure
everywhere else except at three places:
* drm_getsarea, which doesn't grab *any* mutex before
touching dev->maplist (so no drm_global_mutex doesn't help
here either; different issue for a different patch).
However, drivers seem to call it only at
initialization time so it probably doesn't matter
* drm_master_destroy, which is called from drm_master_put,
which in turn is protected with dev->struct_mutex
everywhere else in drm module, so we are good here too.
* drm_getsareactx, which releases the dev->struct_mutex
too early, but this patch includes the fix for that.
v2: * incorporate comments received from Daniel Vetter
* include the (long) explanation above to make it clear what
we are doing (and why), also at Daniel Vetter's request
* tighten up mutex grab/release locations to only
encompass real critical sections, rather than some
random code around them
Signed-off-by: Ilija Hadzic <ihadzic@research.bell-labs.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-10-28 15:43:28 -06:00
|
|
|
if (idx < 0)
|
2005-04-16 16:20:36 -06:00
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
i = 0;
|
drm: make DRM_UNLOCKED ioctls with their own mutex
drm_getclient, drm_getstats and drm_getmap (with a few minor
adjustments) do not need global mutex, so fix that and
make the said ioctls DRM_UNLOCKED. Details:
drm_getclient: the only thing that should be protected here
is dev->filelist and that is already protected everywhere with
dev->struct_mutex.
drm_getstats: there is no need for any mutex here because the
loop runs through quasi-static (set at load time only)
data, and the actual count access is done with atomic_read()
drm_getmap already uses dev->struct_mutex to protect
dev->maplist, which also used to protect the same structure
everywhere else except at three places:
* drm_getsarea, which doesn't grab *any* mutex before
touching dev->maplist (so no drm_global_mutex doesn't help
here either; different issue for a different patch).
However, drivers seem to call it only at
initialization time so it probably doesn't matter
* drm_master_destroy, which is called from drm_master_put,
which in turn is protected with dev->struct_mutex
everywhere else in drm module, so we are good here too.
* drm_getsareactx, which releases the dev->struct_mutex
too early, but this patch includes the fix for that.
v2: * incorporate comments received from Daniel Vetter
* include the (long) explanation above to make it clear what
we are doing (and why), also at Daniel Vetter's request
* tighten up mutex grab/release locations to only
encompass real critical sections, rather than some
random code around them
Signed-off-by: Ilija Hadzic <ihadzic@research.bell-labs.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-10-28 15:43:28 -06:00
|
|
|
mutex_lock(&dev->struct_mutex);
|
2007-05-25 13:01:51 -06:00
|
|
|
list_for_each(list, &dev->maplist) {
|
2005-09-24 22:28:13 -06:00
|
|
|
if (i == idx) {
|
2007-07-11 00:53:40 -06:00
|
|
|
r_list = list_entry(list, struct drm_map_list, head);
|
2005-04-16 16:20:36 -06:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
i++;
|
|
|
|
}
|
2005-09-24 22:28:13 -06:00
|
|
|
if (!r_list || !r_list->map) {
|
2006-02-02 01:37:46 -07:00
|
|
|
mutex_unlock(&dev->struct_mutex);
|
2005-04-16 16:20:36 -06:00
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2007-09-02 20:06:45 -06:00
|
|
|
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;
|
2006-02-02 01:37:46 -07:00
|
|
|
mutex_unlock(&dev->struct_mutex);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Get client information.
|
|
|
|
*
|
|
|
|
* \param inode device inode.
|
2007-08-25 04:23:09 -06:00
|
|
|
* \param file_priv DRM file private.
|
2005-04-16 16:20:36 -06:00
|
|
|
* \param cmd command.
|
|
|
|
* \param arg user argument, pointing to a drm_client structure.
|
2005-09-24 22:28:13 -06:00
|
|
|
*
|
2005-04-16 16:20:36 -06:00
|
|
|
* \return zero on success or a negative number on failure.
|
|
|
|
*
|
|
|
|
* Searches for the client with the specified index and copies its information
|
|
|
|
* into userspace
|
|
|
|
*/
|
2007-09-02 20:06:45 -06:00
|
|
|
int drm_getclient(struct drm_device *dev, void *data,
|
|
|
|
struct drm_file *file_priv)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2007-09-02 20:06:45 -06:00
|
|
|
struct drm_client *client = data;
|
2007-07-10 23:53:27 -06:00
|
|
|
struct drm_file *pt;
|
2005-09-24 22:28:13 -06:00
|
|
|
int idx;
|
|
|
|
int i;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-09-02 20:06:45 -06:00
|
|
|
idx = client->idx;
|
2007-05-25 13:01:51 -06:00
|
|
|
i = 0;
|
drm: make DRM_UNLOCKED ioctls with their own mutex
drm_getclient, drm_getstats and drm_getmap (with a few minor
adjustments) do not need global mutex, so fix that and
make the said ioctls DRM_UNLOCKED. Details:
drm_getclient: the only thing that should be protected here
is dev->filelist and that is already protected everywhere with
dev->struct_mutex.
drm_getstats: there is no need for any mutex here because the
loop runs through quasi-static (set at load time only)
data, and the actual count access is done with atomic_read()
drm_getmap already uses dev->struct_mutex to protect
dev->maplist, which also used to protect the same structure
everywhere else except at three places:
* drm_getsarea, which doesn't grab *any* mutex before
touching dev->maplist (so no drm_global_mutex doesn't help
here either; different issue for a different patch).
However, drivers seem to call it only at
initialization time so it probably doesn't matter
* drm_master_destroy, which is called from drm_master_put,
which in turn is protected with dev->struct_mutex
everywhere else in drm module, so we are good here too.
* drm_getsareactx, which releases the dev->struct_mutex
too early, but this patch includes the fix for that.
v2: * incorporate comments received from Daniel Vetter
* include the (long) explanation above to make it clear what
we are doing (and why), also at Daniel Vetter's request
* tighten up mutex grab/release locations to only
encompass real critical sections, rather than some
random code around them
Signed-off-by: Ilija Hadzic <ihadzic@research.bell-labs.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-10-28 15:43:28 -06:00
|
|
|
|
|
|
|
mutex_lock(&dev->struct_mutex);
|
2007-05-25 13:01:51 -06:00
|
|
|
list_for_each_entry(pt, &dev->filelist, lhead) {
|
2007-11-22 01:46:54 -07:00
|
|
|
if (i++ >= idx) {
|
|
|
|
client->auth = pt->authenticated;
|
2012-02-07 17:47:26 -07:00
|
|
|
client->pid = pid_vnr(pt->pid);
|
|
|
|
client->uid = from_kuid_munged(current_user_ns(), pt->uid);
|
2007-11-22 01:46:54 -07:00
|
|
|
client->magic = pt->magic;
|
|
|
|
client->iocs = pt->ioctl_count;
|
|
|
|
mutex_unlock(&dev->struct_mutex);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
2007-05-25 13:01:51 -06:00
|
|
|
}
|
2006-02-02 01:37:46 -07:00
|
|
|
mutex_unlock(&dev->struct_mutex);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-11-22 01:46:54 -07:00
|
|
|
return -EINVAL;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
2005-09-24 22:28:13 -06:00
|
|
|
/**
|
|
|
|
* Get statistics information.
|
|
|
|
*
|
2005-04-16 16:20:36 -06:00
|
|
|
* \param inode device inode.
|
2007-08-25 04:23:09 -06:00
|
|
|
* \param file_priv DRM file private.
|
2005-04-16 16:20:36 -06:00
|
|
|
* \param cmd command.
|
|
|
|
* \param arg user argument, pointing to a drm_stats structure.
|
2005-09-24 22:28:13 -06:00
|
|
|
*
|
2005-04-16 16:20:36 -06:00
|
|
|
* \return zero on success or a negative number on failure.
|
|
|
|
*/
|
2007-09-02 20:06:45 -06:00
|
|
|
int drm_getstats(struct drm_device *dev, void *data,
|
|
|
|
struct drm_file *file_priv)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2007-09-02 20:06:45 -06:00
|
|
|
struct drm_stats *stats = data;
|
2005-09-24 22:28:13 -06:00
|
|
|
int i;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-11-04 19:53:09 -07:00
|
|
|
memset(stats, 0, sizeof(*stats));
|
2005-09-24 22:28:13 -06:00
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
for (i = 0; i < dev->counters; i++) {
|
|
|
|
if (dev->types[i] == _DRM_STAT_LOCK)
|
2007-09-02 20:06:45 -06:00
|
|
|
stats->data[i].value =
|
2008-11-27 21:22:24 -07:00
|
|
|
(file_priv->master->lock.hw_lock ? file_priv->master->lock.hw_lock->lock : 0);
|
2005-09-24 22:28:13 -06:00
|
|
|
else
|
2007-09-02 20:06:45 -06:00
|
|
|
stats->data[i].value = atomic_read(&dev->counts[i]);
|
|
|
|
stats->data[i].type = dev->types[i];
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
2005-09-24 22:28:13 -06:00
|
|
|
|
2007-09-02 20:06:45 -06:00
|
|
|
stats->count = dev->counters;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-02-20 18:17:35 -07:00
|
|
|
/**
|
|
|
|
* Get device/driver capabilities
|
|
|
|
*/
|
|
|
|
int drm_getcap(struct drm_device *dev, void *data, struct drm_file *file_priv)
|
|
|
|
{
|
|
|
|
struct drm_get_cap *req = data;
|
|
|
|
|
|
|
|
req->value = 0;
|
2011-03-03 21:50:28 -07:00
|
|
|
switch (req->capability) {
|
|
|
|
case DRM_CAP_DUMB_BUFFER:
|
|
|
|
if (dev->driver->dumb_create)
|
|
|
|
req->value = 1;
|
|
|
|
break;
|
2011-03-24 04:54:35 -06:00
|
|
|
case DRM_CAP_VBLANK_HIGH_CRTC:
|
2011-03-18 15:58:04 -06:00
|
|
|
req->value = 1;
|
|
|
|
break;
|
2011-09-29 09:20:42 -06:00
|
|
|
case DRM_CAP_DUMB_PREFERRED_DEPTH:
|
|
|
|
req->value = dev->mode_config.preferred_depth;
|
|
|
|
break;
|
|
|
|
case DRM_CAP_DUMB_PREFER_SHADOW:
|
|
|
|
req->value = dev->mode_config.prefer_shadow;
|
|
|
|
break;
|
2012-04-02 07:11:50 -06:00
|
|
|
case DRM_CAP_PRIME:
|
|
|
|
req->value |= dev->driver->prime_fd_to_handle ? DRM_PRIME_CAP_IMPORT : 0;
|
|
|
|
req->value |= dev->driver->prime_handle_to_fd ? DRM_PRIME_CAP_EXPORT : 0;
|
|
|
|
break;
|
2012-10-23 12:53:26 -06:00
|
|
|
case DRM_CAP_TIMESTAMP_MONOTONIC:
|
|
|
|
req->value = drm_timestamp_monotonic;
|
|
|
|
break;
|
2011-03-03 21:50:28 -07:00
|
|
|
default:
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
2011-02-20 18:17:35 -07:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
/**
|
|
|
|
* Setversion ioctl.
|
|
|
|
*
|
|
|
|
* \param inode device inode.
|
2007-08-25 04:23:09 -06:00
|
|
|
* \param file_priv DRM file private.
|
2005-04-16 16:20:36 -06:00
|
|
|
* \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
|
|
|
|
*/
|
2007-09-02 20:06:45 -06:00
|
|
|
int drm_setversion(struct drm_device *dev, void *data, struct drm_file *file_priv)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2007-09-02 20:06:45 -06:00
|
|
|
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);
|
2006-08-07 04:07:43 -06:00
|
|
|
dev->if_version = max(if_version, dev->if_version);
|
2007-09-02 20:06:45 -06:00
|
|
|
if (sv->drm_di_minor >= 1) {
|
2005-04-16 16:20:36 -06:00
|
|
|
/*
|
|
|
|
* Version 1.1 includes tying of DRM to specific device
|
2010-08-05 21:55:10 -06:00
|
|
|
* Version 1.4 has proper PCI domain support
|
2005-04-16 16:20:36 -06:00
|
|
|
*/
|
2010-08-04 04:09:42 -06:00
|
|
|
retcode = drm_set_busid(dev, file_priv);
|
|
|
|
if (retcode)
|
|
|
|
goto done;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2007-09-02 20:06:45 -06:00
|
|
|
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;
|
|
|
|
}
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
if (dev->driver->set_version)
|
2007-09-02 20:06:45 -06:00
|
|
|
dev->driver->set_version(dev, sv);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
2007-09-02 20:06:45 -06:00
|
|
|
|
|
|
|
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;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
/** No-op ioctl. */
|
2007-09-02 20:06:45 -06:00
|
|
|
int drm_noop(struct drm_device *dev, void *data,
|
|
|
|
struct drm_file *file_priv)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
|
|
|
DRM_DEBUG("\n");
|
|
|
|
return 0;
|
|
|
|
}
|
2012-01-17 04:50:12 -07:00
|
|
|
EXPORT_SYMBOL(drm_noop);
|