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This mode group id_list was never being freed. v2: take David's suggestion to free in minor_free. Signed-off-by: Dave Airlie <airlied@redhat.com>
780 lines
20 KiB
C
780 lines
20 KiB
C
/**
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* \file drm_stub.h
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* Stub support
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*
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* \author Rickard E. (Rik) Faith <faith@valinux.com>
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*/
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/*
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* Created: Fri Jan 19 10:48:35 2001 by faith@acm.org
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*
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* Copyright 2001 VA Linux Systems, Inc., Sunnyvale, California.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* 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
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <linux/fs.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/mount.h>
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#include <linux/slab.h>
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#include <drm/drmP.h>
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#include <drm/drm_core.h>
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unsigned int drm_debug = 0; /* 1 to enable debug output */
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EXPORT_SYMBOL(drm_debug);
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unsigned int drm_rnodes = 0; /* 1 to enable experimental render nodes API */
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EXPORT_SYMBOL(drm_rnodes);
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/* 1 to allow user space to request universal planes (experimental) */
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unsigned int drm_universal_planes = 0;
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EXPORT_SYMBOL(drm_universal_planes);
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unsigned int drm_vblank_offdelay = 5000; /* Default to 5000 msecs. */
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EXPORT_SYMBOL(drm_vblank_offdelay);
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unsigned int drm_timestamp_precision = 20; /* Default to 20 usecs. */
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EXPORT_SYMBOL(drm_timestamp_precision);
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/*
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* Default to use monotonic timestamps for wait-for-vblank and page-flip
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* complete events.
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*/
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unsigned int drm_timestamp_monotonic = 1;
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MODULE_AUTHOR(CORE_AUTHOR);
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MODULE_DESCRIPTION(CORE_DESC);
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MODULE_LICENSE("GPL and additional rights");
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MODULE_PARM_DESC(debug, "Enable debug output");
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MODULE_PARM_DESC(rnodes, "Enable experimental render nodes API");
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MODULE_PARM_DESC(vblankoffdelay, "Delay until vblank irq auto-disable [msecs]");
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MODULE_PARM_DESC(timestamp_precision_usec, "Max. error on timestamps [usecs]");
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MODULE_PARM_DESC(timestamp_monotonic, "Use monotonic timestamps");
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module_param_named(debug, drm_debug, int, 0600);
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module_param_named(rnodes, drm_rnodes, int, 0600);
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module_param_named(universal_planes, drm_universal_planes, int, 0600);
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module_param_named(vblankoffdelay, drm_vblank_offdelay, int, 0600);
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module_param_named(timestamp_precision_usec, drm_timestamp_precision, int, 0600);
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module_param_named(timestamp_monotonic, drm_timestamp_monotonic, int, 0600);
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static DEFINE_SPINLOCK(drm_minor_lock);
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struct idr drm_minors_idr;
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struct class *drm_class;
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struct dentry *drm_debugfs_root;
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int drm_err(const char *func, const char *format, ...)
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{
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struct va_format vaf;
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va_list args;
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int r;
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va_start(args, format);
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vaf.fmt = format;
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vaf.va = &args;
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r = printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* %pV", func, &vaf);
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va_end(args);
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return r;
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}
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EXPORT_SYMBOL(drm_err);
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void drm_ut_debug_printk(const char *function_name, const char *format, ...)
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{
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struct va_format vaf;
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va_list args;
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va_start(args, format);
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vaf.fmt = format;
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vaf.va = &args;
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printk(KERN_DEBUG "[" DRM_NAME ":%s] %pV", function_name, &vaf);
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va_end(args);
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}
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EXPORT_SYMBOL(drm_ut_debug_printk);
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struct drm_master *drm_master_create(struct drm_minor *minor)
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{
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struct drm_master *master;
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master = kzalloc(sizeof(*master), GFP_KERNEL);
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if (!master)
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return NULL;
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kref_init(&master->refcount);
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spin_lock_init(&master->lock.spinlock);
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init_waitqueue_head(&master->lock.lock_queue);
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if (drm_ht_create(&master->magiclist, DRM_MAGIC_HASH_ORDER)) {
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kfree(master);
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return NULL;
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}
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INIT_LIST_HEAD(&master->magicfree);
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master->minor = minor;
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return master;
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}
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struct drm_master *drm_master_get(struct drm_master *master)
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{
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kref_get(&master->refcount);
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return master;
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}
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EXPORT_SYMBOL(drm_master_get);
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static void drm_master_destroy(struct kref *kref)
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{
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struct drm_master *master = container_of(kref, struct drm_master, refcount);
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struct drm_magic_entry *pt, *next;
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struct drm_device *dev = master->minor->dev;
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struct drm_map_list *r_list, *list_temp;
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mutex_lock(&dev->struct_mutex);
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if (dev->driver->master_destroy)
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dev->driver->master_destroy(dev, master);
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list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) {
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if (r_list->master == master) {
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drm_rmmap_locked(dev, r_list->map);
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r_list = NULL;
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}
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}
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if (master->unique) {
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kfree(master->unique);
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master->unique = NULL;
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master->unique_len = 0;
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}
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list_for_each_entry_safe(pt, next, &master->magicfree, head) {
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list_del(&pt->head);
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drm_ht_remove_item(&master->magiclist, &pt->hash_item);
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kfree(pt);
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}
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drm_ht_remove(&master->magiclist);
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mutex_unlock(&dev->struct_mutex);
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kfree(master);
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}
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void drm_master_put(struct drm_master **master)
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{
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kref_put(&(*master)->refcount, drm_master_destroy);
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*master = NULL;
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}
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EXPORT_SYMBOL(drm_master_put);
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int drm_setmaster_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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int ret = 0;
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mutex_lock(&dev->master_mutex);
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if (file_priv->is_master)
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goto out_unlock;
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if (file_priv->minor->master) {
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ret = -EINVAL;
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goto out_unlock;
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}
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if (!file_priv->master) {
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ret = -EINVAL;
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goto out_unlock;
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}
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file_priv->minor->master = drm_master_get(file_priv->master);
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file_priv->is_master = 1;
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if (dev->driver->master_set) {
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ret = dev->driver->master_set(dev, file_priv, false);
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if (unlikely(ret != 0)) {
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file_priv->is_master = 0;
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drm_master_put(&file_priv->minor->master);
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}
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}
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out_unlock:
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mutex_unlock(&dev->master_mutex);
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return ret;
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}
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int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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int ret = -EINVAL;
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mutex_lock(&dev->master_mutex);
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if (!file_priv->is_master)
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goto out_unlock;
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if (!file_priv->minor->master)
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goto out_unlock;
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ret = 0;
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if (dev->driver->master_drop)
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dev->driver->master_drop(dev, file_priv, false);
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drm_master_put(&file_priv->minor->master);
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file_priv->is_master = 0;
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out_unlock:
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mutex_unlock(&dev->master_mutex);
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return ret;
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}
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/*
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* DRM Minors
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* A DRM device can provide several char-dev interfaces on the DRM-Major. Each
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* of them is represented by a drm_minor object. Depending on the capabilities
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* of the device-driver, different interfaces are registered.
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*
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* Minors can be accessed via dev->$minor_name. This pointer is either
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* NULL or a valid drm_minor pointer and stays valid as long as the device is
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* valid. This means, DRM minors have the same life-time as the underlying
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* device. However, this doesn't mean that the minor is active. Minors are
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* registered and unregistered dynamically according to device-state.
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*/
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static struct drm_minor **drm_minor_get_slot(struct drm_device *dev,
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unsigned int type)
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{
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switch (type) {
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case DRM_MINOR_LEGACY:
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return &dev->primary;
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case DRM_MINOR_RENDER:
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return &dev->render;
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case DRM_MINOR_CONTROL:
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return &dev->control;
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default:
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return NULL;
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}
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}
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static int drm_minor_alloc(struct drm_device *dev, unsigned int type)
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{
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struct drm_minor *minor;
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minor = kzalloc(sizeof(*minor), GFP_KERNEL);
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if (!minor)
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return -ENOMEM;
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minor->type = type;
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minor->dev = dev;
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*drm_minor_get_slot(dev, type) = minor;
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return 0;
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}
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static void drm_minor_free(struct drm_device *dev, unsigned int type)
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{
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struct drm_minor **slot;
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slot = drm_minor_get_slot(dev, type);
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if (*slot) {
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drm_mode_group_destroy(&(*slot)->mode_group);
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kfree(*slot);
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*slot = NULL;
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}
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}
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static int drm_minor_register(struct drm_device *dev, unsigned int type)
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{
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struct drm_minor *new_minor;
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unsigned long flags;
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int ret;
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int minor_id;
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DRM_DEBUG("\n");
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new_minor = *drm_minor_get_slot(dev, type);
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if (!new_minor)
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return 0;
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idr_preload(GFP_KERNEL);
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spin_lock_irqsave(&drm_minor_lock, flags);
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minor_id = idr_alloc(&drm_minors_idr,
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NULL,
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64 * type,
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64 * (type + 1),
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GFP_NOWAIT);
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spin_unlock_irqrestore(&drm_minor_lock, flags);
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idr_preload_end();
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if (minor_id < 0)
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return minor_id;
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new_minor->index = minor_id;
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ret = drm_debugfs_init(new_minor, minor_id, drm_debugfs_root);
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if (ret) {
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DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
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goto err_id;
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}
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ret = drm_sysfs_device_add(new_minor);
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if (ret) {
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DRM_ERROR("DRM: Error sysfs_device_add.\n");
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goto err_debugfs;
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}
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/* replace NULL with @minor so lookups will succeed from now on */
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spin_lock_irqsave(&drm_minor_lock, flags);
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idr_replace(&drm_minors_idr, new_minor, new_minor->index);
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spin_unlock_irqrestore(&drm_minor_lock, flags);
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DRM_DEBUG("new minor assigned %d\n", minor_id);
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return 0;
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err_debugfs:
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drm_debugfs_cleanup(new_minor);
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err_id:
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spin_lock_irqsave(&drm_minor_lock, flags);
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idr_remove(&drm_minors_idr, minor_id);
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spin_unlock_irqrestore(&drm_minor_lock, flags);
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new_minor->index = 0;
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return ret;
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}
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static void drm_minor_unregister(struct drm_device *dev, unsigned int type)
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{
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struct drm_minor *minor;
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unsigned long flags;
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minor = *drm_minor_get_slot(dev, type);
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if (!minor || !minor->kdev)
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return;
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spin_lock_irqsave(&drm_minor_lock, flags);
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idr_remove(&drm_minors_idr, minor->index);
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spin_unlock_irqrestore(&drm_minor_lock, flags);
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minor->index = 0;
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drm_debugfs_cleanup(minor);
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drm_sysfs_device_remove(minor);
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}
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/**
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* drm_minor_acquire - Acquire a DRM minor
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* @minor_id: Minor ID of the DRM-minor
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*
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* Looks up the given minor-ID and returns the respective DRM-minor object. The
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* refence-count of the underlying device is increased so you must release this
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* object with drm_minor_release().
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*
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* As long as you hold this minor, it is guaranteed that the object and the
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* minor->dev pointer will stay valid! However, the device may get unplugged and
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* unregistered while you hold the minor.
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*
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* Returns:
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* Pointer to minor-object with increased device-refcount, or PTR_ERR on
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* failure.
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*/
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struct drm_minor *drm_minor_acquire(unsigned int minor_id)
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{
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struct drm_minor *minor;
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unsigned long flags;
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spin_lock_irqsave(&drm_minor_lock, flags);
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minor = idr_find(&drm_minors_idr, minor_id);
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if (minor)
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drm_dev_ref(minor->dev);
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spin_unlock_irqrestore(&drm_minor_lock, flags);
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if (!minor) {
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return ERR_PTR(-ENODEV);
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} else if (drm_device_is_unplugged(minor->dev)) {
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drm_dev_unref(minor->dev);
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return ERR_PTR(-ENODEV);
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}
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return minor;
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}
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/**
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* drm_minor_release - Release DRM minor
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* @minor: Pointer to DRM minor object
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*
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* Release a minor that was previously acquired via drm_minor_acquire().
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*/
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void drm_minor_release(struct drm_minor *minor)
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{
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drm_dev_unref(minor->dev);
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}
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/**
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* Called via drm_exit() at module unload time or when pci device is
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* unplugged.
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*
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* Cleans up all DRM device, calling drm_lastclose().
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*
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*/
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void drm_put_dev(struct drm_device *dev)
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{
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DRM_DEBUG("\n");
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if (!dev) {
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DRM_ERROR("cleanup called no dev\n");
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return;
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}
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drm_dev_unregister(dev);
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drm_dev_unref(dev);
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}
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EXPORT_SYMBOL(drm_put_dev);
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void drm_unplug_dev(struct drm_device *dev)
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{
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/* for a USB device */
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drm_minor_unregister(dev, DRM_MINOR_LEGACY);
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drm_minor_unregister(dev, DRM_MINOR_RENDER);
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drm_minor_unregister(dev, DRM_MINOR_CONTROL);
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mutex_lock(&drm_global_mutex);
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drm_device_set_unplugged(dev);
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if (dev->open_count == 0) {
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drm_put_dev(dev);
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}
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mutex_unlock(&drm_global_mutex);
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}
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EXPORT_SYMBOL(drm_unplug_dev);
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/*
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* DRM internal mount
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* We want to be able to allocate our own "struct address_space" to control
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* memory-mappings in VRAM (or stolen RAM, ...). However, core MM does not allow
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* stand-alone address_space objects, so we need an underlying inode. As there
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* is no way to allocate an independent inode easily, we need a fake internal
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* VFS mount-point.
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*
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* The drm_fs_inode_new() function allocates a new inode, drm_fs_inode_free()
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* frees it again. You are allowed to use iget() and iput() to get references to
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* the inode. But each drm_fs_inode_new() call must be paired with exactly one
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* drm_fs_inode_free() call (which does not have to be the last iput()).
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* We use drm_fs_inode_*() to manage our internal VFS mount-point and share it
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* between multiple inode-users. You could, technically, call
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* iget() + drm_fs_inode_free() directly after alloc and sometime later do an
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* iput(), but this way you'd end up with a new vfsmount for each inode.
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*/
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static int drm_fs_cnt;
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static struct vfsmount *drm_fs_mnt;
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static const struct dentry_operations drm_fs_dops = {
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.d_dname = simple_dname,
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};
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static const struct super_operations drm_fs_sops = {
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.statfs = simple_statfs,
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};
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static struct dentry *drm_fs_mount(struct file_system_type *fs_type, int flags,
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const char *dev_name, void *data)
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{
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return mount_pseudo(fs_type,
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"drm:",
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&drm_fs_sops,
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&drm_fs_dops,
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0x010203ff);
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}
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static struct file_system_type drm_fs_type = {
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.name = "drm",
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.owner = THIS_MODULE,
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.mount = drm_fs_mount,
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.kill_sb = kill_anon_super,
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};
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static struct inode *drm_fs_inode_new(void)
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{
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struct inode *inode;
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int r;
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r = simple_pin_fs(&drm_fs_type, &drm_fs_mnt, &drm_fs_cnt);
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if (r < 0) {
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DRM_ERROR("Cannot mount pseudo fs: %d\n", r);
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return ERR_PTR(r);
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}
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|
|
inode = alloc_anon_inode(drm_fs_mnt->mnt_sb);
|
|
if (IS_ERR(inode))
|
|
simple_release_fs(&drm_fs_mnt, &drm_fs_cnt);
|
|
|
|
return inode;
|
|
}
|
|
|
|
static void drm_fs_inode_free(struct inode *inode)
|
|
{
|
|
if (inode) {
|
|
iput(inode);
|
|
simple_release_fs(&drm_fs_mnt, &drm_fs_cnt);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* drm_dev_alloc - Allocate new drm device
|
|
* @driver: DRM driver to allocate device for
|
|
* @parent: Parent device object
|
|
*
|
|
* Allocate and initialize a new DRM device. No device registration is done.
|
|
* Call drm_dev_register() to advertice the device to user space and register it
|
|
* with other core subsystems.
|
|
*
|
|
* The initial ref-count of the object is 1. Use drm_dev_ref() and
|
|
* drm_dev_unref() to take and drop further ref-counts.
|
|
*
|
|
* RETURNS:
|
|
* Pointer to new DRM device, or NULL if out of memory.
|
|
*/
|
|
struct drm_device *drm_dev_alloc(struct drm_driver *driver,
|
|
struct device *parent)
|
|
{
|
|
struct drm_device *dev;
|
|
int ret;
|
|
|
|
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
|
|
if (!dev)
|
|
return NULL;
|
|
|
|
kref_init(&dev->ref);
|
|
dev->dev = parent;
|
|
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);
|
|
mutex_init(&dev->master_mutex);
|
|
|
|
dev->anon_inode = drm_fs_inode_new();
|
|
if (IS_ERR(dev->anon_inode)) {
|
|
ret = PTR_ERR(dev->anon_inode);
|
|
DRM_ERROR("Cannot allocate anonymous inode: %d\n", ret);
|
|
goto err_free;
|
|
}
|
|
|
|
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
|
|
ret = drm_minor_alloc(dev, DRM_MINOR_CONTROL);
|
|
if (ret)
|
|
goto err_minors;
|
|
}
|
|
|
|
if (drm_core_check_feature(dev, DRIVER_RENDER) && drm_rnodes) {
|
|
ret = drm_minor_alloc(dev, DRM_MINOR_RENDER);
|
|
if (ret)
|
|
goto err_minors;
|
|
}
|
|
|
|
ret = drm_minor_alloc(dev, DRM_MINOR_LEGACY);
|
|
if (ret)
|
|
goto err_minors;
|
|
|
|
if (drm_ht_create(&dev->map_hash, 12))
|
|
goto err_minors;
|
|
|
|
ret = drm_ctxbitmap_init(dev);
|
|
if (ret) {
|
|
DRM_ERROR("Cannot allocate memory for context bitmap.\n");
|
|
goto err_ht;
|
|
}
|
|
|
|
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 dev;
|
|
|
|
err_ctxbitmap:
|
|
drm_ctxbitmap_cleanup(dev);
|
|
err_ht:
|
|
drm_ht_remove(&dev->map_hash);
|
|
err_minors:
|
|
drm_minor_free(dev, DRM_MINOR_LEGACY);
|
|
drm_minor_free(dev, DRM_MINOR_RENDER);
|
|
drm_minor_free(dev, DRM_MINOR_CONTROL);
|
|
drm_fs_inode_free(dev->anon_inode);
|
|
err_free:
|
|
mutex_destroy(&dev->master_mutex);
|
|
kfree(dev);
|
|
return NULL;
|
|
}
|
|
EXPORT_SYMBOL(drm_dev_alloc);
|
|
|
|
static void drm_dev_release(struct kref *ref)
|
|
{
|
|
struct drm_device *dev = container_of(ref, struct drm_device, ref);
|
|
|
|
if (dev->driver->driver_features & DRIVER_GEM)
|
|
drm_gem_destroy(dev);
|
|
|
|
drm_ctxbitmap_cleanup(dev);
|
|
drm_ht_remove(&dev->map_hash);
|
|
drm_fs_inode_free(dev->anon_inode);
|
|
|
|
drm_minor_free(dev, DRM_MINOR_LEGACY);
|
|
drm_minor_free(dev, DRM_MINOR_RENDER);
|
|
drm_minor_free(dev, DRM_MINOR_CONTROL);
|
|
|
|
mutex_destroy(&dev->master_mutex);
|
|
kfree(dev);
|
|
}
|
|
|
|
/**
|
|
* drm_dev_ref - Take reference of a DRM device
|
|
* @dev: device to take reference of or NULL
|
|
*
|
|
* This increases the ref-count of @dev by one. You *must* already own a
|
|
* reference when calling this. Use drm_dev_unref() to drop this reference
|
|
* again.
|
|
*
|
|
* This function never fails. However, this function does not provide *any*
|
|
* guarantee whether the device is alive or running. It only provides a
|
|
* reference to the object and the memory associated with it.
|
|
*/
|
|
void drm_dev_ref(struct drm_device *dev)
|
|
{
|
|
if (dev)
|
|
kref_get(&dev->ref);
|
|
}
|
|
EXPORT_SYMBOL(drm_dev_ref);
|
|
|
|
/**
|
|
* drm_dev_unref - Drop reference of a DRM device
|
|
* @dev: device to drop reference of or NULL
|
|
*
|
|
* This decreases the ref-count of @dev by one. The device is destroyed if the
|
|
* ref-count drops to zero.
|
|
*/
|
|
void drm_dev_unref(struct drm_device *dev)
|
|
{
|
|
if (dev)
|
|
kref_put(&dev->ref, drm_dev_release);
|
|
}
|
|
EXPORT_SYMBOL(drm_dev_unref);
|
|
|
|
/**
|
|
* drm_dev_register - Register DRM device
|
|
* @dev: Device to register
|
|
*
|
|
* Register the DRM device @dev with the system, advertise device to user-space
|
|
* and start normal device operation. @dev must be allocated via drm_dev_alloc()
|
|
* previously.
|
|
*
|
|
* Never call this twice on any device!
|
|
*
|
|
* RETURNS:
|
|
* 0 on success, negative error code on failure.
|
|
*/
|
|
int drm_dev_register(struct drm_device *dev, unsigned long flags)
|
|
{
|
|
int ret;
|
|
|
|
mutex_lock(&drm_global_mutex);
|
|
|
|
ret = drm_minor_register(dev, DRM_MINOR_CONTROL);
|
|
if (ret)
|
|
goto err_minors;
|
|
|
|
ret = drm_minor_register(dev, DRM_MINOR_RENDER);
|
|
if (ret)
|
|
goto err_minors;
|
|
|
|
ret = drm_minor_register(dev, DRM_MINOR_LEGACY);
|
|
if (ret)
|
|
goto err_minors;
|
|
|
|
if (dev->driver->load) {
|
|
ret = dev->driver->load(dev, flags);
|
|
if (ret)
|
|
goto err_minors;
|
|
}
|
|
|
|
/* setup grouping for legacy outputs */
|
|
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
|
|
ret = drm_mode_group_init_legacy_group(dev,
|
|
&dev->primary->mode_group);
|
|
if (ret)
|
|
goto err_unload;
|
|
}
|
|
|
|
ret = 0;
|
|
goto out_unlock;
|
|
|
|
err_unload:
|
|
if (dev->driver->unload)
|
|
dev->driver->unload(dev);
|
|
err_minors:
|
|
drm_minor_unregister(dev, DRM_MINOR_LEGACY);
|
|
drm_minor_unregister(dev, DRM_MINOR_RENDER);
|
|
drm_minor_unregister(dev, DRM_MINOR_CONTROL);
|
|
out_unlock:
|
|
mutex_unlock(&drm_global_mutex);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(drm_dev_register);
|
|
|
|
/**
|
|
* drm_dev_unregister - Unregister DRM device
|
|
* @dev: Device to unregister
|
|
*
|
|
* Unregister the DRM device from the system. This does the reverse of
|
|
* drm_dev_register() but does not deallocate the device. The caller must call
|
|
* drm_dev_unref() to drop their final reference.
|
|
*/
|
|
void drm_dev_unregister(struct drm_device *dev)
|
|
{
|
|
struct drm_map_list *r_list, *list_temp;
|
|
|
|
drm_lastclose(dev);
|
|
|
|
if (dev->driver->unload)
|
|
dev->driver->unload(dev);
|
|
|
|
if (dev->agp)
|
|
drm_pci_agp_destroy(dev);
|
|
|
|
drm_vblank_cleanup(dev);
|
|
|
|
list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head)
|
|
drm_rmmap(dev, r_list->map);
|
|
|
|
drm_minor_unregister(dev, DRM_MINOR_LEGACY);
|
|
drm_minor_unregister(dev, DRM_MINOR_RENDER);
|
|
drm_minor_unregister(dev, DRM_MINOR_CONTROL);
|
|
}
|
|
EXPORT_SYMBOL(drm_dev_unregister);
|