diff options
Diffstat (limited to 'libdde_linux26/lib/src/drivers/base')
6 files changed, 0 insertions, 2333 deletions
diff --git a/libdde_linux26/lib/src/drivers/base/.svn/all-wcprops b/libdde_linux26/lib/src/drivers/base/.svn/all-wcprops deleted file mode 100644 index b4d5f8c7..00000000 --- a/libdde_linux26/lib/src/drivers/base/.svn/all-wcprops +++ /dev/null @@ -1,23 +0,0 @@ -K 25 -svn:wc:ra_dav:version-url -V 71 -/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/lib/src/drivers/base -END -init.c -K 25 -svn:wc:ra_dav:version-url -V 78 -/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/lib/src/drivers/base/init.c -END -class.c -K 25 -svn:wc:ra_dav:version-url -V 79 -/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/lib/src/drivers/base/class.c -END -core.c -K 25 -svn:wc:ra_dav:version-url -V 78 -/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/lib/src/drivers/base/core.c -END diff --git a/libdde_linux26/lib/src/drivers/base/.svn/entries b/libdde_linux26/lib/src/drivers/base/.svn/entries deleted file mode 100644 index ad16ddef..00000000 --- a/libdde_linux26/lib/src/drivers/base/.svn/entries +++ /dev/null @@ -1,130 +0,0 @@ -9 - -dir -465 -http://svn.tudos.org/repos/tudos/trunk/l4/pkg/dde/linux26/lib/src/drivers/base -http://svn.tudos.org/repos/tudos - - - -2009-05-20T14:32:55.606606Z -455 -l4check - - -svn:special svn:externals svn:needs-lock - - - - - - - - - - - -a704ac0b-3a55-4d43-a2a9-7be6f07c34fb - -init.c -file - - - - -2009-11-15T17:17:12.000000Z -17b65b620f4c532617f53d0bf9125a05 -2009-05-20T14:32:55.606606Z -455 -l4check - - - - - - - - - - - - - - - - - - - - - -795 - -class.c -file - - - - -2009-11-15T17:17:12.000000Z -e33913dbbb3e7526c2b6144e41ad7ad7 -2009-05-20T14:32:55.606606Z -455 -l4check - - - - - - - - - - - - - - - - - - - - - -12685 - -core.c -file - - - - -2009-11-15T17:17:12.000000Z -caba481446dd962e54a2a9e5ebcaa3bc -2009-05-20T14:32:55.606606Z -455 -l4check - - - - - - - - - - - - - - - - - - - - - -42233 - diff --git a/libdde_linux26/lib/src/drivers/base/.svn/format b/libdde_linux26/lib/src/drivers/base/.svn/format deleted file mode 100644 index ec635144..00000000 --- a/libdde_linux26/lib/src/drivers/base/.svn/format +++ /dev/null @@ -1 +0,0 @@ -9 diff --git a/libdde_linux26/lib/src/drivers/base/.svn/text-base/class.c.svn-base b/libdde_linux26/lib/src/drivers/base/.svn/text-base/class.c.svn-base deleted file mode 100644 index 1417d80b..00000000 --- a/libdde_linux26/lib/src/drivers/base/.svn/text-base/class.c.svn-base +++ /dev/null @@ -1,505 +0,0 @@ -/* - * class.c - basic device class management - * - * Copyright (c) 2002-3 Patrick Mochel - * Copyright (c) 2002-3 Open Source Development Labs - * Copyright (c) 2003-2004 Greg Kroah-Hartman - * Copyright (c) 2003-2004 IBM Corp. - * - * This file is released under the GPLv2 - * - */ - -#include <linux/device.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/string.h> -#include <linux/kdev_t.h> -#include <linux/err.h> -#include <linux/slab.h> -#include <linux/genhd.h> -#include <linux/mutex.h> -#include "base.h" - -#define to_class_attr(_attr) container_of(_attr, struct class_attribute, attr) - -static ssize_t class_attr_show(struct kobject *kobj, struct attribute *attr, - char *buf) -{ - struct class_attribute *class_attr = to_class_attr(attr); - struct class_private *cp = to_class(kobj); - ssize_t ret = -EIO; - - if (class_attr->show) - ret = class_attr->show(cp->class, buf); - return ret; -} - -static ssize_t class_attr_store(struct kobject *kobj, struct attribute *attr, - const char *buf, size_t count) -{ - struct class_attribute *class_attr = to_class_attr(attr); - struct class_private *cp = to_class(kobj); - ssize_t ret = -EIO; - - if (class_attr->store) - ret = class_attr->store(cp->class, buf, count); - return ret; -} - -static void class_release(struct kobject *kobj) -{ - struct class_private *cp = to_class(kobj); - struct class *class = cp->class; - - pr_debug("class '%s': release.\n", class->name); - - if (class->class_release) - class->class_release(class); - else - pr_debug("class '%s' does not have a release() function, " - "be careful\n", class->name); -} - -static struct sysfs_ops class_sysfs_ops = { - .show = class_attr_show, - .store = class_attr_store, -}; - -static struct kobj_type class_ktype = { - .sysfs_ops = &class_sysfs_ops, - .release = class_release, -}; - -/* Hotplug events for classes go to the class class_subsys */ -static struct kset *class_kset; - - -int class_create_file(struct class *cls, const struct class_attribute *attr) -{ - int error; - if (cls) - error = sysfs_create_file(&cls->p->class_subsys.kobj, - &attr->attr); - else - error = -EINVAL; - return error; -} - -void class_remove_file(struct class *cls, const struct class_attribute *attr) -{ - if (cls) - sysfs_remove_file(&cls->p->class_subsys.kobj, &attr->attr); -} - -static struct class *class_get(struct class *cls) -{ - if (cls) - kset_get(&cls->p->class_subsys); - return cls; -} - -static void class_put(struct class *cls) -{ - if (cls) - kset_put(&cls->p->class_subsys); -} - -static int add_class_attrs(struct class *cls) -{ - int i; - int error = 0; - - if (cls->class_attrs) { - for (i = 0; attr_name(cls->class_attrs[i]); i++) { - error = class_create_file(cls, &cls->class_attrs[i]); - if (error) - goto error; - } - } -done: - return error; -error: - while (--i >= 0) - class_remove_file(cls, &cls->class_attrs[i]); - goto done; -} - -static void remove_class_attrs(struct class *cls) -{ - int i; - - if (cls->class_attrs) { - for (i = 0; attr_name(cls->class_attrs[i]); i++) - class_remove_file(cls, &cls->class_attrs[i]); - } -} - -static void klist_class_dev_get(struct klist_node *n) -{ - struct device *dev = container_of(n, struct device, knode_class); - - get_device(dev); -} - -static void klist_class_dev_put(struct klist_node *n) -{ - struct device *dev = container_of(n, struct device, knode_class); - - put_device(dev); -} - -int __class_register(struct class *cls, struct lock_class_key *key) -{ - struct class_private *cp; - int error; - - pr_debug("device class '%s': registering\n", cls->name); - - cp = kzalloc(sizeof(*cp), GFP_KERNEL); - if (!cp) - return -ENOMEM; - klist_init(&cp->class_devices, klist_class_dev_get, klist_class_dev_put); - INIT_LIST_HEAD(&cp->class_interfaces); - kset_init(&cp->class_dirs); - __mutex_init(&cp->class_mutex, "struct class mutex", key); - error = kobject_set_name(&cp->class_subsys.kobj, "%s", cls->name); - if (error) { - kfree(cp); - return error; - } - - /* set the default /sys/dev directory for devices of this class */ - if (!cls->dev_kobj) - cls->dev_kobj = sysfs_dev_char_kobj; - -#if defined(CONFIG_SYSFS_DEPRECATED) && defined(CONFIG_BLOCK) && !defined(DDE_LINUX) - /* let the block class directory show up in the root of sysfs */ - if (cls != &block_class) - cp->class_subsys.kobj.kset = class_kset; -#else - cp->class_subsys.kobj.kset = class_kset; -#endif - cp->class_subsys.kobj.ktype = &class_ktype; - cp->class = cls; - cls->p = cp; - - error = kset_register(&cp->class_subsys); - if (error) { - kfree(cp); - return error; - } - error = add_class_attrs(class_get(cls)); - class_put(cls); - return error; -} -EXPORT_SYMBOL_GPL(__class_register); - -void class_unregister(struct class *cls) -{ - pr_debug("device class '%s': unregistering\n", cls->name); - remove_class_attrs(cls); - kset_unregister(&cls->p->class_subsys); -} - -static void class_create_release(struct class *cls) -{ - pr_debug("%s called for %s\n", __func__, cls->name); - kfree(cls); -} - -/** - * class_create - create a struct class structure - * @owner: pointer to the module that is to "own" this struct class - * @name: pointer to a string for the name of this class. - * @key: the lock_class_key for this class; used by mutex lock debugging - * - * This is used to create a struct class pointer that can then be used - * in calls to device_create(). - * - * Note, the pointer created here is to be destroyed when finished by - * making a call to class_destroy(). - */ -struct class *__class_create(struct module *owner, const char *name, - struct lock_class_key *key) -{ - struct class *cls; - int retval; - - cls = kzalloc(sizeof(*cls), GFP_KERNEL); - if (!cls) { - retval = -ENOMEM; - goto error; - } - - cls->name = name; - cls->owner = owner; - cls->class_release = class_create_release; - - retval = __class_register(cls, key); - if (retval) - goto error; - - return cls; - -error: - kfree(cls); - return ERR_PTR(retval); -} -EXPORT_SYMBOL_GPL(__class_create); - -/** - * class_destroy - destroys a struct class structure - * @cls: pointer to the struct class that is to be destroyed - * - * Note, the pointer to be destroyed must have been created with a call - * to class_create(). - */ -void class_destroy(struct class *cls) -{ - if ((cls == NULL) || (IS_ERR(cls))) - return; - - class_unregister(cls); -} - -#ifdef CONFIG_SYSFS_DEPRECATED -char *make_class_name(const char *name, struct kobject *kobj) -{ - char *class_name; - int size; - - size = strlen(name) + strlen(kobject_name(kobj)) + 2; - - class_name = kmalloc(size, GFP_KERNEL); - if (!class_name) - return NULL; - - strcpy(class_name, name); - strcat(class_name, ":"); - strcat(class_name, kobject_name(kobj)); - return class_name; -} -#endif - -/** - * class_dev_iter_init - initialize class device iterator - * @iter: class iterator to initialize - * @class: the class we wanna iterate over - * @start: the device to start iterating from, if any - * @type: device_type of the devices to iterate over, NULL for all - * - * Initialize class iterator @iter such that it iterates over devices - * of @class. If @start is set, the list iteration will start there, - * otherwise if it is NULL, the iteration starts at the beginning of - * the list. - */ -void class_dev_iter_init(struct class_dev_iter *iter, struct class *class, - struct device *start, const struct device_type *type) -{ - struct klist_node *start_knode = NULL; - - if (start) - start_knode = &start->knode_class; - klist_iter_init_node(&class->p->class_devices, &iter->ki, start_knode); - iter->type = type; -} -EXPORT_SYMBOL_GPL(class_dev_iter_init); - -/** - * class_dev_iter_next - iterate to the next device - * @iter: class iterator to proceed - * - * Proceed @iter to the next device and return it. Returns NULL if - * iteration is complete. - * - * The returned device is referenced and won't be released till - * iterator is proceed to the next device or exited. The caller is - * free to do whatever it wants to do with the device including - * calling back into class code. - */ -struct device *class_dev_iter_next(struct class_dev_iter *iter) -{ - struct klist_node *knode; - struct device *dev; - - while (1) { - knode = klist_next(&iter->ki); - if (!knode) - return NULL; - dev = container_of(knode, struct device, knode_class); - if (!iter->type || iter->type == dev->type) - return dev; - } -} -EXPORT_SYMBOL_GPL(class_dev_iter_next); - -/** - * class_dev_iter_exit - finish iteration - * @iter: class iterator to finish - * - * Finish an iteration. Always call this function after iteration is - * complete whether the iteration ran till the end or not. - */ -void class_dev_iter_exit(struct class_dev_iter *iter) -{ - klist_iter_exit(&iter->ki); -} -EXPORT_SYMBOL_GPL(class_dev_iter_exit); - -/** - * class_for_each_device - device iterator - * @class: the class we're iterating - * @start: the device to start with in the list, if any. - * @data: data for the callback - * @fn: function to be called for each device - * - * Iterate over @class's list of devices, and call @fn for each, - * passing it @data. If @start is set, the list iteration will start - * there, otherwise if it is NULL, the iteration starts at the - * beginning of the list. - * - * We check the return of @fn each time. If it returns anything - * other than 0, we break out and return that value. - * - * @fn is allowed to do anything including calling back into class - * code. There's no locking restriction. - */ -int class_for_each_device(struct class *class, struct device *start, - void *data, int (*fn)(struct device *, void *)) -{ - struct class_dev_iter iter; - struct device *dev; - int error = 0; - - if (!class) - return -EINVAL; - if (!class->p) { - WARN(1, "%s called for class '%s' before it was initialized", - __func__, class->name); - return -EINVAL; - } - - class_dev_iter_init(&iter, class, start, NULL); - while ((dev = class_dev_iter_next(&iter))) { - error = fn(dev, data); - if (error) - break; - } - class_dev_iter_exit(&iter); - - return error; -} -EXPORT_SYMBOL_GPL(class_for_each_device); - -/** - * class_find_device - device iterator for locating a particular device - * @class: the class we're iterating - * @start: Device to begin with - * @data: data for the match function - * @match: function to check device - * - * This is similar to the class_for_each_dev() function above, but it - * returns a reference to a device that is 'found' for later use, as - * determined by the @match callback. - * - * The callback should return 0 if the device doesn't match and non-zero - * if it does. If the callback returns non-zero, this function will - * return to the caller and not iterate over any more devices. - * - * Note, you will need to drop the reference with put_device() after use. - * - * @fn is allowed to do anything including calling back into class - * code. There's no locking restriction. - */ -struct device *class_find_device(struct class *class, struct device *start, - void *data, - int (*match)(struct device *, void *)) -{ - struct class_dev_iter iter; - struct device *dev; - - if (!class) - return NULL; - if (!class->p) { - WARN(1, "%s called for class '%s' before it was initialized", - __func__, class->name); - return NULL; - } - - class_dev_iter_init(&iter, class, start, NULL); - while ((dev = class_dev_iter_next(&iter))) { - if (match(dev, data)) { - get_device(dev); - break; - } - } - class_dev_iter_exit(&iter); - - return dev; -} -EXPORT_SYMBOL_GPL(class_find_device); - -int class_interface_register(struct class_interface *class_intf) -{ - struct class *parent; - struct class_dev_iter iter; - struct device *dev; - - if (!class_intf || !class_intf->class) - return -ENODEV; - - parent = class_get(class_intf->class); - if (!parent) - return -EINVAL; - - mutex_lock(&parent->p->class_mutex); - list_add_tail(&class_intf->node, &parent->p->class_interfaces); - if (class_intf->add_dev) { - class_dev_iter_init(&iter, parent, NULL, NULL); - while ((dev = class_dev_iter_next(&iter))) - class_intf->add_dev(dev, class_intf); - class_dev_iter_exit(&iter); - } - mutex_unlock(&parent->p->class_mutex); - - return 0; -} - -void class_interface_unregister(struct class_interface *class_intf) -{ - struct class *parent = class_intf->class; - struct class_dev_iter iter; - struct device *dev; - - if (!parent) - return; - - mutex_lock(&parent->p->class_mutex); - list_del_init(&class_intf->node); - if (class_intf->remove_dev) { - class_dev_iter_init(&iter, parent, NULL, NULL); - while ((dev = class_dev_iter_next(&iter))) - class_intf->remove_dev(dev, class_intf); - class_dev_iter_exit(&iter); - } - mutex_unlock(&parent->p->class_mutex); - - class_put(parent); -} - -int __init classes_init(void) -{ - class_kset = kset_create_and_add("class", NULL, NULL); - if (!class_kset) - return -ENOMEM; - return 0; -} - -EXPORT_SYMBOL_GPL(class_create_file); -EXPORT_SYMBOL_GPL(class_remove_file); -EXPORT_SYMBOL_GPL(class_unregister); -EXPORT_SYMBOL_GPL(class_destroy); - -EXPORT_SYMBOL_GPL(class_interface_register); -EXPORT_SYMBOL_GPL(class_interface_unregister); diff --git a/libdde_linux26/lib/src/drivers/base/.svn/text-base/core.c.svn-base b/libdde_linux26/lib/src/drivers/base/.svn/text-base/core.c.svn-base deleted file mode 100644 index e3800714..00000000 --- a/libdde_linux26/lib/src/drivers/base/.svn/text-base/core.c.svn-base +++ /dev/null @@ -1,1633 +0,0 @@ -/* - * drivers/base/core.c - core driver model code (device registration, etc) - * - * Copyright (c) 2002-3 Patrick Mochel - * Copyright (c) 2002-3 Open Source Development Labs - * Copyright (c) 2006 Greg Kroah-Hartman <gregkh@suse.de> - * Copyright (c) 2006 Novell, Inc. - * - * This file is released under the GPLv2 - * - */ - -#include <linux/device.h> -#include <linux/err.h> -#include <linux/init.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/string.h> -#include <linux/kdev_t.h> -#include <linux/notifier.h> -#include <linux/genhd.h> -#include <linux/kallsyms.h> -#include <linux/semaphore.h> -#include <linux/mutex.h> - -#include "base.h" -#include "power/power.h" - -int (*platform_notify)(struct device *dev) = NULL; -int (*platform_notify_remove)(struct device *dev) = NULL; -static struct kobject *dev_kobj; -struct kobject *sysfs_dev_char_kobj; -struct kobject *sysfs_dev_block_kobj; - -#ifdef DDE_LINUX -#include "local.h" -#endif - -#if defined(CONFIG_BLOCK) && !defined(DDE_LINUX) -static inline int device_is_not_partition(struct device *dev) -{ - return !(dev->type == &part_type); -} -#else -static inline int device_is_not_partition(struct device *dev) -{ - return 1; -} -#endif - -/** - * dev_driver_string - Return a device's driver name, if at all possible - * @dev: struct device to get the name of - * - * Will return the device's driver's name if it is bound to a device. If - * the device is not bound to a device, it will return the name of the bus - * it is attached to. If it is not attached to a bus either, an empty - * string will be returned. - */ -const char *dev_driver_string(const struct device *dev) -{ - return dev->driver ? dev->driver->name : - (dev->bus ? dev->bus->name : - (dev->class ? dev->class->name : "")); -} -EXPORT_SYMBOL(dev_driver_string); - -#define to_dev(obj) container_of(obj, struct device, kobj) -#define to_dev_attr(_attr) container_of(_attr, struct device_attribute, attr) - -static ssize_t dev_attr_show(struct kobject *kobj, struct attribute *attr, - char *buf) -{ - struct device_attribute *dev_attr = to_dev_attr(attr); - struct device *dev = to_dev(kobj); - ssize_t ret = -EIO; - - if (dev_attr->show) - ret = dev_attr->show(dev, dev_attr, buf); - if (ret >= (ssize_t)PAGE_SIZE) { - print_symbol("dev_attr_show: %s returned bad count\n", - (unsigned long)dev_attr->show); - } - return ret; -} - -static ssize_t dev_attr_store(struct kobject *kobj, struct attribute *attr, - const char *buf, size_t count) -{ - struct device_attribute *dev_attr = to_dev_attr(attr); - struct device *dev = to_dev(kobj); - ssize_t ret = -EIO; - - if (dev_attr->store) - ret = dev_attr->store(dev, dev_attr, buf, count); - return ret; -} - -static struct sysfs_ops dev_sysfs_ops = { - .show = dev_attr_show, - .store = dev_attr_store, -}; - - -/** - * device_release - free device structure. - * @kobj: device's kobject. - * - * This is called once the reference count for the object - * reaches 0. We forward the call to the device's release - * method, which should handle actually freeing the structure. - */ -static void device_release(struct kobject *kobj) -{ - struct device *dev = to_dev(kobj); - - if (dev->release) - dev->release(dev); - else if (dev->type && dev->type->release) - dev->type->release(dev); - else if (dev->class && dev->class->dev_release) - dev->class->dev_release(dev); - else - WARN(1, KERN_ERR "Device '%s' does not have a release() " - "function, it is broken and must be fixed.\n", - dev_name(dev)); -} - -static struct kobj_type device_ktype = { - .release = device_release, - .sysfs_ops = &dev_sysfs_ops, -}; - - -static int dev_uevent_filter(struct kset *kset, struct kobject *kobj) -{ - struct kobj_type *ktype = get_ktype(kobj); - - if (ktype == &device_ktype) { - struct device *dev = to_dev(kobj); - if (dev->uevent_suppress) - return 0; - if (dev->bus) - return 1; - if (dev->class) - return 1; - } - return 0; -} - -static const char *dev_uevent_name(struct kset *kset, struct kobject *kobj) -{ - struct device *dev = to_dev(kobj); - - if (dev->bus) - return dev->bus->name; - if (dev->class) - return dev->class->name; - return NULL; -} - -static int dev_uevent(struct kset *kset, struct kobject *kobj, - struct kobj_uevent_env *env) -{ - struct device *dev = to_dev(kobj); - int retval = 0; - -#ifndef DDE_LINUX - /* add the major/minor if present */ - if (MAJOR(dev->devt)) { - add_uevent_var(env, "MAJOR=%u", MAJOR(dev->devt)); - add_uevent_var(env, "MINOR=%u", MINOR(dev->devt)); - } - - if (dev->type && dev->type->name) - add_uevent_var(env, "DEVTYPE=%s", dev->type->name); - - if (dev->driver) - add_uevent_var(env, "DRIVER=%s", dev->driver->name); - -#ifdef CONFIG_SYSFS_DEPRECATED - if (dev->class) { - struct device *parent = dev->parent; - - /* find first bus device in parent chain */ - while (parent && !parent->bus) - parent = parent->parent; - if (parent && parent->bus) { - const char *path; - - path = kobject_get_path(&parent->kobj, GFP_KERNEL); - if (path) { - add_uevent_var(env, "PHYSDEVPATH=%s", path); - kfree(path); - } - - add_uevent_var(env, "PHYSDEVBUS=%s", parent->bus->name); - - if (parent->driver) - add_uevent_var(env, "PHYSDEVDRIVER=%s", - parent->driver->name); - } - } else if (dev->bus) { - add_uevent_var(env, "PHYSDEVBUS=%s", dev->bus->name); - - if (dev->driver) - add_uevent_var(env, "PHYSDEVDRIVER=%s", - dev->driver->name); - } -#endif - - /* have the bus specific function add its stuff */ - if (dev->bus && dev->bus->uevent) { - retval = dev->bus->uevent(dev, env); - if (retval) - pr_debug("device: '%s': %s: bus uevent() returned %d\n", - dev_name(dev), __func__, retval); - } - - /* have the class specific function add its stuff */ - if (dev->class && dev->class->dev_uevent) { - retval = dev->class->dev_uevent(dev, env); - if (retval) - pr_debug("device: '%s': %s: class uevent() " - "returned %d\n", dev_name(dev), - __func__, retval); - } - - /* have the device type specific fuction add its stuff */ - if (dev->type && dev->type->uevent) { - retval = dev->type->uevent(dev, env); - if (retval) - pr_debug("device: '%s': %s: dev_type uevent() " - "returned %d\n", dev_name(dev), - __func__, retval); - } -#endif - - return retval; -} - -static struct kset_uevent_ops device_uevent_ops = { - .filter = dev_uevent_filter, - .name = dev_uevent_name, - .uevent = dev_uevent, -}; - -static ssize_t show_uevent(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct kobject *top_kobj; - struct kset *kset; - struct kobj_uevent_env *env = NULL; - int i; - size_t count = 0; - int retval; - - /* search the kset, the device belongs to */ - top_kobj = &dev->kobj; - while (!top_kobj->kset && top_kobj->parent) - top_kobj = top_kobj->parent; - if (!top_kobj->kset) - goto out; - - kset = top_kobj->kset; - if (!kset->uevent_ops || !kset->uevent_ops->uevent) - goto out; - - /* respect filter */ - if (kset->uevent_ops && kset->uevent_ops->filter) - if (!kset->uevent_ops->filter(kset, &dev->kobj)) - goto out; - - env = kzalloc(sizeof(struct kobj_uevent_env), GFP_KERNEL); - if (!env) - return -ENOMEM; - - /* let the kset specific function add its keys */ - retval = kset->uevent_ops->uevent(kset, &dev->kobj, env); - if (retval) - goto out; - - /* copy keys to file */ - for (i = 0; i < env->envp_idx; i++) - count += sprintf(&buf[count], "%s\n", env->envp[i]); -out: - kfree(env); - return count; -} - -static ssize_t store_uevent(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - enum kobject_action action; - - if (kobject_action_type(buf, count, &action) == 0) { - kobject_uevent(&dev->kobj, action); - goto out; - } - - dev_err(dev, "uevent: unsupported action-string; this will " - "be ignored in a future kernel version\n"); - kobject_uevent(&dev->kobj, KOBJ_ADD); -out: - return count; -} - -static struct device_attribute uevent_attr = - __ATTR(uevent, S_IRUGO | S_IWUSR, show_uevent, store_uevent); - -static int device_add_attributes(struct device *dev, - struct device_attribute *attrs) -{ - int error = 0; - int i; - - if (attrs) { - for (i = 0; attr_name(attrs[i]); i++) { - error = device_create_file(dev, &attrs[i]); - if (error) - break; - } - if (error) - while (--i >= 0) - device_remove_file(dev, &attrs[i]); - } - return error; -} - -static void device_remove_attributes(struct device *dev, - struct device_attribute *attrs) -{ - int i; - - if (attrs) - for (i = 0; attr_name(attrs[i]); i++) - device_remove_file(dev, &attrs[i]); -} - -static int device_add_groups(struct device *dev, - struct attribute_group **groups) -{ - int error = 0; - int i; - - if (groups) { - for (i = 0; groups[i]; i++) { - error = sysfs_create_group(&dev->kobj, groups[i]); - if (error) { - while (--i >= 0) - sysfs_remove_group(&dev->kobj, - groups[i]); - break; - } - } - } - return error; -} - -static void device_remove_groups(struct device *dev, - struct attribute_group **groups) -{ - int i; - - if (groups) - for (i = 0; groups[i]; i++) - sysfs_remove_group(&dev->kobj, groups[i]); -} - -static int device_add_attrs(struct device *dev) -{ - struct class *class = dev->class; - struct device_type *type = dev->type; - int error; - - if (class) { - error = device_add_attributes(dev, class->dev_attrs); - if (error) - return error; - } - - if (type) { - error = device_add_groups(dev, type->groups); - if (error) - goto err_remove_class_attrs; - } - - error = device_add_groups(dev, dev->groups); - if (error) - goto err_remove_type_groups; - - return 0; - - err_remove_type_groups: - if (type) - device_remove_groups(dev, type->groups); - err_remove_class_attrs: - if (class) - device_remove_attributes(dev, class->dev_attrs); - - return error; -} - -static void device_remove_attrs(struct device *dev) -{ - struct class *class = dev->class; - struct device_type *type = dev->type; - - device_remove_groups(dev, dev->groups); - - if (type) - device_remove_groups(dev, type->groups); - - if (class) - device_remove_attributes(dev, class->dev_attrs); -} - - -static ssize_t show_dev(struct device *dev, struct device_attribute *attr, - char *buf) -{ - return print_dev_t(buf, dev->devt); -} - -static struct device_attribute devt_attr = - __ATTR(dev, S_IRUGO, show_dev, NULL); - -/* kset to create /sys/devices/ */ -struct kset *devices_kset; - -/** - * device_create_file - create sysfs attribute file for device. - * @dev: device. - * @attr: device attribute descriptor. - */ -int device_create_file(struct device *dev, struct device_attribute *attr) -{ - int error = 0; - if (dev) - error = sysfs_create_file(&dev->kobj, &attr->attr); - return error; -} - -/** - * device_remove_file - remove sysfs attribute file. - * @dev: device. - * @attr: device attribute descriptor. - */ -void device_remove_file(struct device *dev, struct device_attribute *attr) -{ - if (dev) - sysfs_remove_file(&dev->kobj, &attr->attr); -} - -/** - * device_create_bin_file - create sysfs binary attribute file for device. - * @dev: device. - * @attr: device binary attribute descriptor. - */ -int device_create_bin_file(struct device *dev, struct bin_attribute *attr) -{ - int error = -EINVAL; - if (dev) - error = sysfs_create_bin_file(&dev->kobj, attr); - return error; -} -EXPORT_SYMBOL_GPL(device_create_bin_file); - -/** - * device_remove_bin_file - remove sysfs binary attribute file - * @dev: device. - * @attr: device binary attribute descriptor. - */ -void device_remove_bin_file(struct device *dev, struct bin_attribute *attr) -{ - if (dev) - sysfs_remove_bin_file(&dev->kobj, attr); -} -EXPORT_SYMBOL_GPL(device_remove_bin_file); - -/** - * device_schedule_callback_owner - helper to schedule a callback for a device - * @dev: device. - * @func: callback function to invoke later. - * @owner: module owning the callback routine - * - * Attribute methods must not unregister themselves or their parent device - * (which would amount to the same thing). Attempts to do so will deadlock, - * since unregistration is mutually exclusive with driver callbacks. - * - * Instead methods can call this routine, which will attempt to allocate - * and schedule a workqueue request to call back @func with @dev as its - * argument in the workqueue's process context. @dev will be pinned until - * @func returns. - * - * This routine is usually called via the inline device_schedule_callback(), - * which automatically sets @owner to THIS_MODULE. - * - * Returns 0 if the request was submitted, -ENOMEM if storage could not - * be allocated, -ENODEV if a reference to @owner isn't available. - * - * NOTE: This routine won't work if CONFIG_SYSFS isn't set! It uses an - * underlying sysfs routine (since it is intended for use by attribute - * methods), and if sysfs isn't available you'll get nothing but -ENOSYS. - */ -int device_schedule_callback_owner(struct device *dev, - void (*func)(struct device *), struct module *owner) -{ - return sysfs_schedule_callback(&dev->kobj, - (void (*)(void *)) func, dev, owner); -} -EXPORT_SYMBOL_GPL(device_schedule_callback_owner); - -static void klist_children_get(struct klist_node *n) -{ - struct device *dev = container_of(n, struct device, knode_parent); - - get_device(dev); -} - -static void klist_children_put(struct klist_node *n) -{ - struct device *dev = container_of(n, struct device, knode_parent); - - put_device(dev); -} - -/** - * device_initialize - init device structure. - * @dev: device. - * - * This prepares the device for use by other layers by initializing - * its fields. - * It is the first half of device_register(), if called by - * that function, though it can also be called separately, so one - * may use @dev's fields. In particular, get_device()/put_device() - * may be used for reference counting of @dev after calling this - * function. - * - * NOTE: Use put_device() to give up your reference instead of freeing - * @dev directly once you have called this function. - */ -void device_initialize(struct device *dev) -{ - dev->kobj.kset = devices_kset; - kobject_init(&dev->kobj, &device_ktype); - klist_init(&dev->klist_children, klist_children_get, - klist_children_put); - INIT_LIST_HEAD(&dev->dma_pools); - init_MUTEX(&dev->sem); - spin_lock_init(&dev->devres_lock); - INIT_LIST_HEAD(&dev->devres_head); - device_init_wakeup(dev, 0); - device_pm_init(dev); - set_dev_node(dev, -1); -} - -#ifdef CONFIG_SYSFS_DEPRECATED -static struct kobject *get_device_parent(struct device *dev, - struct device *parent) -{ - /* class devices without a parent live in /sys/class/<classname>/ */ - if (dev->class && (!parent || parent->class != dev->class)) - return &dev->class->p->class_subsys.kobj; - /* all other devices keep their parent */ - else if (parent) - return &parent->kobj; - - return NULL; -} - -static inline void cleanup_device_parent(struct device *dev) {} -static inline void cleanup_glue_dir(struct device *dev, - struct kobject *glue_dir) {} -#else -static struct kobject *virtual_device_parent(struct device *dev) -{ - static struct kobject *virtual_dir = NULL; - - if (!virtual_dir) - virtual_dir = kobject_create_and_add("virtual", - &devices_kset->kobj); - - return virtual_dir; -} - -static struct kobject *get_device_parent(struct device *dev, - struct device *parent) -{ - int retval; - - if (dev->class) { - struct kobject *kobj = NULL; - struct kobject *parent_kobj; - struct kobject *k; - - /* - * If we have no parent, we live in "virtual". - * Class-devices with a non class-device as parent, live - * in a "glue" directory to prevent namespace collisions. - */ - if (parent == NULL) - parent_kobj = virtual_device_parent(dev); - else if (parent->class) - return &parent->kobj; - else - parent_kobj = &parent->kobj; - - /* find our class-directory at the parent and reference it */ - spin_lock(&dev->class->p->class_dirs.list_lock); - list_for_each_entry(k, &dev->class->p->class_dirs.list, entry) - if (k->parent == parent_kobj) { - kobj = kobject_get(k); - break; - } - spin_unlock(&dev->class->p->class_dirs.list_lock); - if (kobj) - return kobj; - - /* or create a new class-directory at the parent device */ - k = kobject_create(); - if (!k) - return NULL; - k->kset = &dev->class->p->class_dirs; - retval = kobject_add(k, parent_kobj, "%s", dev->class->name); - if (retval < 0) { - kobject_put(k); - return NULL; - } - /* do not emit an uevent for this simple "glue" directory */ - return k; - } - - if (parent) - return &parent->kobj; - return NULL; -} - -static void cleanup_glue_dir(struct device *dev, struct kobject *glue_dir) -{ - /* see if we live in a "glue" directory */ - if (!glue_dir || !dev->class || - glue_dir->kset != &dev->class->p->class_dirs) - return; - - kobject_put(glue_dir); -} - -static void cleanup_device_parent(struct device *dev) -{ - cleanup_glue_dir(dev, dev->kobj.parent); -} -#endif - -static void setup_parent(struct device *dev, struct device *parent) -{ - struct kobject *kobj; - kobj = get_device_parent(dev, parent); - if (kobj) - dev->kobj.parent = kobj; -} - -static int device_add_class_symlinks(struct device *dev) -{ - int error; - - if (!dev->class) - return 0; - - error = sysfs_create_link(&dev->kobj, - &dev->class->p->class_subsys.kobj, - "subsystem"); - if (error) - goto out; - -#ifdef CONFIG_SYSFS_DEPRECATED - /* stacked class devices need a symlink in the class directory */ - if (dev->kobj.parent != &dev->class->p->class_subsys.kobj && - device_is_not_partition(dev)) { - error = sysfs_create_link(&dev->class->p->class_subsys.kobj, - &dev->kobj, dev_name(dev)); - if (error) - goto out_subsys; - } - - if (dev->parent && device_is_not_partition(dev)) { - struct device *parent = dev->parent; - char *class_name; - - /* - * stacked class devices have the 'device' link - * pointing to the bus device instead of the parent - */ - while (parent->class && !parent->bus && parent->parent) - parent = parent->parent; - - error = sysfs_create_link(&dev->kobj, - &parent->kobj, - "device"); - if (error) - goto out_busid; - - class_name = make_class_name(dev->class->name, - &dev->kobj); - if (class_name) - error = sysfs_create_link(&dev->parent->kobj, - &dev->kobj, class_name); - kfree(class_name); - if (error) - goto out_device; - } - return 0; - -out_device: - if (dev->parent && device_is_not_partition(dev)) - sysfs_remove_link(&dev->kobj, "device"); -out_busid - if (dev->kobj.parent != &dev->class->p->class_subsys.kobj && - device_is_not_partition(dev)) - sysfs_remove_link(&dev->class->p->class_subsys.kobj, - dev_name(dev)); -#else - /* link in the class directory pointing to the device */ - error = sysfs_create_link(&dev->class->p->class_subsys.kobj, - &dev->kobj, dev_name(dev)); - if (error) - goto out_subsys; - - if (dev->parent && device_is_not_partition(dev)) { - error = sysfs_create_link(&dev->kobj, &dev->parent->kobj, - "device"); - if (error) - goto out_busid; - } - return 0; - -out_busid: - sysfs_remove_link(&dev->class->p->class_subsys.kobj, dev_name(dev)); -#endif - -out_subsys: - sysfs_remove_link(&dev->kobj, "subsystem"); -out: - return error; -} - -static void device_remove_class_symlinks(struct device *dev) -{ - if (!dev->class) - return; - -#ifdef CONFIG_SYSFS_DEPRECATED - if (dev->parent && device_is_not_partition(dev)) { - char *class_name; - - class_name = make_class_name(dev->class->name, &dev->kobj); - if (class_name) { - sysfs_remove_link(&dev->parent->kobj, class_name); - kfree(class_name); - } - sysfs_remove_link(&dev->kobj, "device"); - } - - if (dev->kobj.parent != &dev->class->p->class_subsys.kobj && - device_is_not_partition(dev)) - sysfs_remove_link(&dev->class->p->class_subsys.kobj, - dev_name(dev)); -#else - if (dev->parent && device_is_not_partition(dev)) - sysfs_remove_link(&dev->kobj, "device"); - - sysfs_remove_link(&dev->class->p->class_subsys.kobj, dev_name(dev)); -#endif - - sysfs_remove_link(&dev->kobj, "subsystem"); -} - -/** - * dev_set_name - set a device name - * @dev: device - * @fmt: format string for the device's name - */ -int dev_set_name(struct device *dev, const char *fmt, ...) -{ - va_list vargs; - char *s; - - va_start(vargs, fmt); - vsnprintf(dev->bus_id, sizeof(dev->bus_id), fmt, vargs); - va_end(vargs); - - /* ewww... some of these buggers have / in the name... */ - while ((s = strchr(dev->bus_id, '/'))) - *s = '!'; - - return 0; -} -EXPORT_SYMBOL_GPL(dev_set_name); - -/** - * device_to_dev_kobj - select a /sys/dev/ directory for the device - * @dev: device - * - * By default we select char/ for new entries. Setting class->dev_obj - * to NULL prevents an entry from being created. class->dev_kobj must - * be set (or cleared) before any devices are registered to the class - * otherwise device_create_sys_dev_entry() and - * device_remove_sys_dev_entry() will disagree about the the presence - * of the link. - */ -static struct kobject *device_to_dev_kobj(struct device *dev) -{ - struct kobject *kobj; - - if (dev->class) - kobj = dev->class->dev_kobj; - else - kobj = sysfs_dev_char_kobj; - - return kobj; -} - -static int device_create_sys_dev_entry(struct device *dev) -{ - struct kobject *kobj = device_to_dev_kobj(dev); - int error = 0; - char devt_str[15]; - - if (kobj) { - format_dev_t(devt_str, dev->devt); - error = sysfs_create_link(kobj, &dev->kobj, devt_str); - } - - return error; -} - -static void device_remove_sys_dev_entry(struct device *dev) -{ - struct kobject *kobj = device_to_dev_kobj(dev); - char devt_str[15]; - - if (kobj) { - format_dev_t(devt_str, dev->devt); - sysfs_remove_link(kobj, devt_str); - } -} - -/** - * device_add - add device to device hierarchy. - * @dev: device. - * - * This is part 2 of device_register(), though may be called - * separately _iff_ device_initialize() has been called separately. - * - * This adds @dev to the kobject hierarchy via kobject_add(), adds it - * to the global and sibling lists for the device, then - * adds it to the other relevant subsystems of the driver model. - * - * NOTE: _Never_ directly free @dev after calling this function, even - * if it returned an error! Always use put_device() to give up your - * reference instead. - */ -int device_add(struct device *dev) -{ - struct device *parent = NULL; - struct class_interface *class_intf; - int error = -EINVAL; - - dev = get_device(dev); - if (!dev) - goto done; - - /* Temporarily support init_name if it is set. - * It will override bus_id for now */ - if (dev->init_name) - dev_set_name(dev, "%s", dev->init_name); - - if (!strlen(dev->bus_id)) - goto done; - - pr_debug("device: '%s': %s\n", dev_name(dev), __func__); - - parent = get_device(dev->parent); - setup_parent(dev, parent); - - /* use parent numa_node */ - if (parent) - set_dev_node(dev, dev_to_node(parent)); - - /* first, register with generic layer. */ - error = kobject_add(&dev->kobj, dev->kobj.parent, "%s", dev_name(dev)); - if (error) - goto Error; - - /* notify platform of device entry */ - if (platform_notify) - platform_notify(dev); - - error = device_create_file(dev, &uevent_attr); - if (error) - goto attrError; - - if (MAJOR(dev->devt)) { - error = device_create_file(dev, &devt_attr); - if (error) - goto ueventattrError; - - error = device_create_sys_dev_entry(dev); - if (error) - goto devtattrError; - } - - error = device_add_class_symlinks(dev); - if (error) - goto SymlinkError; - error = device_add_attrs(dev); - if (error) - goto AttrsError; - error = bus_add_device(dev); - if (error) - goto BusError; - error = dpm_sysfs_add(dev); - if (error) - goto DPMError; - device_pm_add(dev); - - /* Notify clients of device addition. This call must come - * after dpm_sysf_add() and before kobject_uevent(). - */ - if (dev->bus) - blocking_notifier_call_chain(&dev->bus->p->bus_notifier, - BUS_NOTIFY_ADD_DEVICE, dev); - - kobject_uevent(&dev->kobj, KOBJ_ADD); - bus_attach_device(dev); - if (parent) - klist_add_tail(&dev->knode_parent, &parent->klist_children); - - if (dev->class) { - mutex_lock(&dev->class->p->class_mutex); - /* tie the class to the device */ - klist_add_tail(&dev->knode_class, - &dev->class->p->class_devices); - - /* notify any interfaces that the device is here */ - list_for_each_entry(class_intf, - &dev->class->p->class_interfaces, node) - if (class_intf->add_dev) - class_intf->add_dev(dev, class_intf); - mutex_unlock(&dev->class->p->class_mutex); - } -done: - put_device(dev); - return error; - DPMError: - bus_remove_device(dev); - BusError: - device_remove_attrs(dev); - AttrsError: - device_remove_class_symlinks(dev); - SymlinkError: - if (MAJOR(dev->devt)) - device_remove_sys_dev_entry(dev); - devtattrError: - if (MAJOR(dev->devt)) - device_remove_file(dev, &devt_attr); - ueventattrError: - device_remove_file(dev, &uevent_attr); - attrError: - kobject_uevent(&dev->kobj, KOBJ_REMOVE); - kobject_del(&dev->kobj); - Error: - cleanup_device_parent(dev); - if (parent) - put_device(parent); - goto done; -} - -/** - * device_register - register a device with the system. - * @dev: pointer to the device structure - * - * This happens in two clean steps - initialize the device - * and add it to the system. The two steps can be called - * separately, but this is the easiest and most common. - * I.e. you should only call the two helpers separately if - * have a clearly defined need to use and refcount the device - * before it is added to the hierarchy. - * - * NOTE: _Never_ directly free @dev after calling this function, even - * if it returned an error! Always use put_device() to give up the - * reference initialized in this function instead. - */ -int device_register(struct device *dev) -{ - device_initialize(dev); - return device_add(dev); -} - -/** - * get_device - increment reference count for device. - * @dev: device. - * - * This simply forwards the call to kobject_get(), though - * we do take care to provide for the case that we get a NULL - * pointer passed in. - */ -struct device *get_device(struct device *dev) -{ - return dev ? to_dev(kobject_get(&dev->kobj)) : NULL; -} - -/** - * put_device - decrement reference count. - * @dev: device in question. - */ -void put_device(struct device *dev) -{ - /* might_sleep(); */ - if (dev) - kobject_put(&dev->kobj); -} - -/** - * device_del - delete device from system. - * @dev: device. - * - * This is the first part of the device unregistration - * sequence. This removes the device from the lists we control - * from here, has it removed from the other driver model - * subsystems it was added to in device_add(), and removes it - * from the kobject hierarchy. - * - * NOTE: this should be called manually _iff_ device_add() was - * also called manually. - */ -void device_del(struct device *dev) -{ - struct device *parent = dev->parent; - struct class_interface *class_intf; - - /* Notify clients of device removal. This call must come - * before dpm_sysfs_remove(). - */ - if (dev->bus) - blocking_notifier_call_chain(&dev->bus->p->bus_notifier, - BUS_NOTIFY_DEL_DEVICE, dev); - device_pm_remove(dev); - dpm_sysfs_remove(dev); - if (parent) - klist_del(&dev->knode_parent); - if (MAJOR(dev->devt)) { - device_remove_sys_dev_entry(dev); - device_remove_file(dev, &devt_attr); - } - if (dev->class) { - device_remove_class_symlinks(dev); - - mutex_lock(&dev->class->p->class_mutex); - /* notify any interfaces that the device is now gone */ - list_for_each_entry(class_intf, - &dev->class->p->class_interfaces, node) - if (class_intf->remove_dev) - class_intf->remove_dev(dev, class_intf); - /* remove the device from the class list */ - klist_del(&dev->knode_class); - mutex_unlock(&dev->class->p->class_mutex); - } - device_remove_file(dev, &uevent_attr); - device_remove_attrs(dev); - bus_remove_device(dev); - - /* - * Some platform devices are driven without driver attached - * and managed resources may have been acquired. Make sure - * all resources are released. - */ - devres_release_all(dev); - - /* Notify the platform of the removal, in case they - * need to do anything... - */ - if (platform_notify_remove) - platform_notify_remove(dev); - kobject_uevent(&dev->kobj, KOBJ_REMOVE); - cleanup_device_parent(dev); - kobject_del(&dev->kobj); - put_device(parent); -} - -/** - * device_unregister - unregister device from system. - * @dev: device going away. - * - * We do this in two parts, like we do device_register(). First, - * we remove it from all the subsystems with device_del(), then - * we decrement the reference count via put_device(). If that - * is the final reference count, the device will be cleaned up - * via device_release() above. Otherwise, the structure will - * stick around until the final reference to the device is dropped. - */ -void device_unregister(struct device *dev) -{ - pr_debug("device: '%s': %s\n", dev_name(dev), __func__); - device_del(dev); - put_device(dev); -} - -static struct device *next_device(struct klist_iter *i) -{ - struct klist_node *n = klist_next(i); - return n ? container_of(n, struct device, knode_parent) : NULL; -} - -/** - * device_for_each_child - device child iterator. - * @parent: parent struct device. - * @data: data for the callback. - * @fn: function to be called for each device. - * - * Iterate over @parent's child devices, and call @fn for each, - * passing it @data. - * - * We check the return of @fn each time. If it returns anything - * other than 0, we break out and return that value. - */ -int device_for_each_child(struct device *parent, void *data, - int (*fn)(struct device *dev, void *data)) -{ - struct klist_iter i; - struct device *child; - int error = 0; - - klist_iter_init(&parent->klist_children, &i); - while ((child = next_device(&i)) && !error) - error = fn(child, data); - klist_iter_exit(&i); - return error; -} - -/** - * device_find_child - device iterator for locating a particular device. - * @parent: parent struct device - * @data: Data to pass to match function - * @match: Callback function to check device - * - * This is similar to the device_for_each_child() function above, but it - * returns a reference to a device that is 'found' for later use, as - * determined by the @match callback. - * - * The callback should return 0 if the device doesn't match and non-zero - * if it does. If the callback returns non-zero and a reference to the - * current device can be obtained, this function will return to the caller - * and not iterate over any more devices. - */ -struct device *device_find_child(struct device *parent, void *data, - int (*match)(struct device *dev, void *data)) -{ - struct klist_iter i; - struct device *child; - - if (!parent) - return NULL; - - klist_iter_init(&parent->klist_children, &i); - while ((child = next_device(&i))) - if (match(child, data) && get_device(child)) - break; - klist_iter_exit(&i); - return child; -} - -int __init devices_init(void) -{ - devices_kset = kset_create_and_add("devices", &device_uevent_ops, NULL); - if (!devices_kset) - return -ENOMEM; - dev_kobj = kobject_create_and_add("dev", NULL); - if (!dev_kobj) - goto dev_kobj_err; - sysfs_dev_block_kobj = kobject_create_and_add("block", dev_kobj); - if (!sysfs_dev_block_kobj) - goto block_kobj_err; - sysfs_dev_char_kobj = kobject_create_and_add("char", dev_kobj); - if (!sysfs_dev_char_kobj) - goto char_kobj_err; - - return 0; - - char_kobj_err: - kobject_put(sysfs_dev_block_kobj); - block_kobj_err: - kobject_put(dev_kobj); - dev_kobj_err: - kset_unregister(devices_kset); - return -ENOMEM; -} - -EXPORT_SYMBOL_GPL(device_for_each_child); -EXPORT_SYMBOL_GPL(device_find_child); - -EXPORT_SYMBOL_GPL(device_initialize); -EXPORT_SYMBOL_GPL(device_add); -EXPORT_SYMBOL_GPL(device_register); - -EXPORT_SYMBOL_GPL(device_del); -EXPORT_SYMBOL_GPL(device_unregister); -EXPORT_SYMBOL_GPL(get_device); -EXPORT_SYMBOL_GPL(put_device); - -EXPORT_SYMBOL_GPL(device_create_file); -EXPORT_SYMBOL_GPL(device_remove_file); - -struct root_device -{ - struct device dev; - struct module *owner; -}; - -#define to_root_device(dev) container_of(dev, struct root_device, dev) - -static void root_device_release(struct device *dev) -{ - kfree(to_root_device(dev)); -} - -/** - * __root_device_register - allocate and register a root device - * @name: root device name - * @owner: owner module of the root device, usually THIS_MODULE - * - * This function allocates a root device and registers it - * using device_register(). In order to free the returned - * device, use root_device_unregister(). - * - * Root devices are dummy devices which allow other devices - * to be grouped under /sys/devices. Use this function to - * allocate a root device and then use it as the parent of - * any device which should appear under /sys/devices/{name} - * - * The /sys/devices/{name} directory will also contain a - * 'module' symlink which points to the @owner directory - * in sysfs. - * - * Note: You probably want to use root_device_register(). - */ -struct device *__root_device_register(const char *name, struct module *owner) -{ - struct root_device *root; - int err = -ENOMEM; - - root = kzalloc(sizeof(struct root_device), GFP_KERNEL); - if (!root) - return ERR_PTR(err); - - err = dev_set_name(&root->dev, name); - if (err) { - kfree(root); - return ERR_PTR(err); - } - - root->dev.release = root_device_release; - - err = device_register(&root->dev); - if (err) { - put_device(&root->dev); - return ERR_PTR(err); - } - -#ifdef CONFIG_MODULE /* gotta find a "cleaner" way to do this */ - if (owner) { - struct module_kobject *mk = &owner->mkobj; - - err = sysfs_create_link(&root->dev.kobj, &mk->kobj, "module"); - if (err) { - device_unregister(&root->dev); - return ERR_PTR(err); - } - root->owner = owner; - } -#endif - - return &root->dev; -} -EXPORT_SYMBOL_GPL(__root_device_register); - -/** - * root_device_unregister - unregister and free a root device - * @dev: device going away - * - * This function unregisters and cleans up a device that was created by - * root_device_register(). - */ -void root_device_unregister(struct device *dev) -{ - struct root_device *root = to_root_device(dev); - - if (root->owner) - sysfs_remove_link(&root->dev.kobj, "module"); - - device_unregister(dev); -} -EXPORT_SYMBOL_GPL(root_device_unregister); - - -static void device_create_release(struct device *dev) -{ - pr_debug("device: '%s': %s\n", dev_name(dev), __func__); - kfree(dev); -} - -/** - * device_create_vargs - creates a device and registers it with sysfs - * @class: pointer to the struct class that this device should be registered to - * @parent: pointer to the parent struct device of this new device, if any - * @devt: the dev_t for the char device to be added - * @drvdata: the data to be added to the device for callbacks - * @fmt: string for the device's name - * @args: va_list for the device's name - * - * This function can be used by char device classes. A struct device - * will be created in sysfs, registered to the specified class. - * - * A "dev" file will be created, showing the dev_t for the device, if - * the dev_t is not 0,0. - * If a pointer to a parent struct device is passed in, the newly created - * struct device will be a child of that device in sysfs. - * The pointer to the struct device will be returned from the call. - * Any further sysfs files that might be required can be created using this - * pointer. - * - * Note: the struct class passed to this function must have previously - * been created with a call to class_create(). - */ -struct device *device_create_vargs(struct class *class, struct device *parent, - dev_t devt, void *drvdata, const char *fmt, - va_list args) -{ - struct device *dev = NULL; - int retval = -ENODEV; - - if (class == NULL || IS_ERR(class)) - goto error; - - dev = kzalloc(sizeof(*dev), GFP_KERNEL); - if (!dev) { - retval = -ENOMEM; - goto error; - } - - dev->devt = devt; - dev->class = class; - dev->parent = parent; - dev->release = device_create_release; - dev_set_drvdata(dev, drvdata); - - vsnprintf(dev->bus_id, BUS_ID_SIZE, fmt, args); - retval = device_register(dev); - if (retval) - goto error; - - return dev; - -error: - put_device(dev); - return ERR_PTR(retval); -} -EXPORT_SYMBOL_GPL(device_create_vargs); - -/** - * device_create - creates a device and registers it with sysfs - * @class: pointer to the struct class that this device should be registered to - * @parent: pointer to the parent struct device of this new device, if any - * @devt: the dev_t for the char device to be added - * @drvdata: the data to be added to the device for callbacks - * @fmt: string for the device's name - * - * This function can be used by char device classes. A struct device - * will be created in sysfs, registered to the specified class. - * - * A "dev" file will be created, showing the dev_t for the device, if - * the dev_t is not 0,0. - * If a pointer to a parent struct device is passed in, the newly created - * struct device will be a child of that device in sysfs. - * The pointer to the struct device will be returned from the call. - * Any further sysfs files that might be required can be created using this - * pointer. - * - * Note: the struct class passed to this function must have previously - * been created with a call to class_create(). - */ -struct device *device_create(struct class *class, struct device *parent, - dev_t devt, void *drvdata, const char *fmt, ...) -{ - va_list vargs; - struct device *dev; - - va_start(vargs, fmt); - dev = device_create_vargs(class, parent, devt, drvdata, fmt, vargs); - va_end(vargs); - return dev; -} -EXPORT_SYMBOL_GPL(device_create); - -static int __match_devt(struct device *dev, void *data) -{ - dev_t *devt = data; - - return dev->devt == *devt; -} - -/** - * device_destroy - removes a device that was created with device_create() - * @class: pointer to the struct class that this device was registered with - * @devt: the dev_t of the device that was previously registered - * - * This call unregisters and cleans up a device that was created with a - * call to device_create(). - */ -void device_destroy(struct class *class, dev_t devt) -{ - struct device *dev; - - dev = class_find_device(class, NULL, &devt, __match_devt); - if (dev) { - put_device(dev); - device_unregister(dev); - } -} -EXPORT_SYMBOL_GPL(device_destroy); - -/** - * device_rename - renames a device - * @dev: the pointer to the struct device to be renamed - * @new_name: the new name of the device - * - * It is the responsibility of the caller to provide mutual - * exclusion between two different calls of device_rename - * on the same device to ensure that new_name is valid and - * won't conflict with other devices. - */ -int device_rename(struct device *dev, char *new_name) -{ - char *old_class_name = NULL; - char *new_class_name = NULL; - char *old_device_name = NULL; - int error; - - dev = get_device(dev); - if (!dev) - return -EINVAL; - - pr_debug("device: '%s': %s: renaming to '%s'\n", dev_name(dev), - __func__, new_name); - -#ifdef CONFIG_SYSFS_DEPRECATED - if ((dev->class) && (dev->parent)) - old_class_name = make_class_name(dev->class->name, &dev->kobj); -#endif - - old_device_name = kmalloc(BUS_ID_SIZE, GFP_KERNEL); - if (!old_device_name) { - error = -ENOMEM; - goto out; - } - strlcpy(old_device_name, dev->bus_id, BUS_ID_SIZE); - strlcpy(dev->bus_id, new_name, BUS_ID_SIZE); - - error = kobject_rename(&dev->kobj, new_name); - if (error) { - strlcpy(dev->bus_id, old_device_name, BUS_ID_SIZE); - goto out; - } - -#ifdef CONFIG_SYSFS_DEPRECATED - if (old_class_name) { - new_class_name = make_class_name(dev->class->name, &dev->kobj); - if (new_class_name) { - error = sysfs_create_link_nowarn(&dev->parent->kobj, - &dev->kobj, - new_class_name); - if (error) - goto out; - sysfs_remove_link(&dev->parent->kobj, old_class_name); - } - } -#else - if (dev->class) { - error = sysfs_create_link_nowarn(&dev->class->p->class_subsys.kobj, - &dev->kobj, dev_name(dev)); - if (error) - goto out; - sysfs_remove_link(&dev->class->p->class_subsys.kobj, - old_device_name); - } -#endif - -out: - put_device(dev); - - kfree(new_class_name); - kfree(old_class_name); - kfree(old_device_name); - - return error; -} -EXPORT_SYMBOL_GPL(device_rename); - -static int device_move_class_links(struct device *dev, - struct device *old_parent, - struct device *new_parent) -{ - int error = 0; -#ifdef CONFIG_SYSFS_DEPRECATED - char *class_name; - - class_name = make_class_name(dev->class->name, &dev->kobj); - if (!class_name) { - error = -ENOMEM; - goto out; - } - if (old_parent) { - sysfs_remove_link(&dev->kobj, "device"); - sysfs_remove_link(&old_parent->kobj, class_name); - } - if (new_parent) { - error = sysfs_create_link(&dev->kobj, &new_parent->kobj, - "device"); - if (error) - goto out; - error = sysfs_create_link(&new_parent->kobj, &dev->kobj, - class_name); - if (error) - sysfs_remove_link(&dev->kobj, "device"); - } else - error = 0; -out: - kfree(class_name); - return error; -#else - if (old_parent) - sysfs_remove_link(&dev->kobj, "device"); - if (new_parent) - error = sysfs_create_link(&dev->kobj, &new_parent->kobj, - "device"); - return error; -#endif -} - -/** - * device_move - moves a device to a new parent - * @dev: the pointer to the struct device to be moved - * @new_parent: the new parent of the device (can by NULL) - */ -int device_move(struct device *dev, struct device *new_parent) -{ - int error; - struct device *old_parent; - struct kobject *new_parent_kobj; - - dev = get_device(dev); - if (!dev) - return -EINVAL; - - new_parent = get_device(new_parent); - new_parent_kobj = get_device_parent(dev, new_parent); - - pr_debug("device: '%s': %s: moving to '%s'\n", dev_name(dev), - __func__, new_parent ? dev_name(new_parent) : "<NULL>"); - error = kobject_move(&dev->kobj, new_parent_kobj); - if (error) { - cleanup_glue_dir(dev, new_parent_kobj); - put_device(new_parent); - goto out; - } - old_parent = dev->parent; - dev->parent = new_parent; - if (old_parent) - klist_remove(&dev->knode_parent); - if (new_parent) { - klist_add_tail(&dev->knode_parent, &new_parent->klist_children); - set_dev_node(dev, dev_to_node(new_parent)); - } - - if (!dev->class) - goto out_put; - error = device_move_class_links(dev, old_parent, new_parent); - if (error) { - /* We ignore errors on cleanup since we're hosed anyway... */ - device_move_class_links(dev, new_parent, old_parent); - if (!kobject_move(&dev->kobj, &old_parent->kobj)) { - if (new_parent) - klist_remove(&dev->knode_parent); - dev->parent = old_parent; - if (old_parent) { - klist_add_tail(&dev->knode_parent, - &old_parent->klist_children); - set_dev_node(dev, dev_to_node(old_parent)); - } - } - cleanup_glue_dir(dev, new_parent_kobj); - put_device(new_parent); - goto out; - } -out_put: - put_device(old_parent); -out: - put_device(dev); - return error; -} -EXPORT_SYMBOL_GPL(device_move); - -/** - * device_shutdown - call ->shutdown() on each device to shutdown. - */ -void device_shutdown(void) -{ - struct device *dev, *devn; - - list_for_each_entry_safe_reverse(dev, devn, &devices_kset->list, - kobj.entry) { - if (dev->bus && dev->bus->shutdown) { - dev_dbg(dev, "shutdown\n"); - dev->bus->shutdown(dev); - } else if (dev->driver && dev->driver->shutdown) { - dev_dbg(dev, "shutdown\n"); - dev->driver->shutdown(dev); - } - } - kobject_put(sysfs_dev_char_kobj); - kobject_put(sysfs_dev_block_kobj); - kobject_put(dev_kobj); -} diff --git a/libdde_linux26/lib/src/drivers/base/.svn/text-base/init.c.svn-base b/libdde_linux26/lib/src/drivers/base/.svn/text-base/init.c.svn-base deleted file mode 100644 index ca5ac986..00000000 --- a/libdde_linux26/lib/src/drivers/base/.svn/text-base/init.c.svn-base +++ /dev/null @@ -1,41 +0,0 @@ -/* - * Copyright (c) 2002-3 Patrick Mochel - * Copyright (c) 2002-3 Open Source Development Labs - * - * This file is released under the GPLv2 - */ - -#include <linux/device.h> -#include <linux/init.h> -#include <linux/memory.h> - -#include "base.h" - -/** - * driver_init - initialize driver model. - * - * Call the driver model init functions to initialize their - * subsystems. Called early from init/main.c. - */ -void __init driver_init(void) -{ - /* These are the core pieces */ - devices_init(); - buses_init(); - classes_init(); -#ifndef DDE_LINUX - firmware_init(); - hypervisor_init(); -#endif - - /* These are also core pieces, but must come after the - * core core pieces. - */ - platform_bus_init(); -#ifndef DDE_LINUX - system_bus_init(); - cpu_dev_init(); - memory_dev_init(); - attribute_container_init(); -#endif -} |