#ifndef _DEVICE_H_
#define _DEVICE_H_
-#include <linux/config.h>
#include <linux/ioport.h>
#include <linux/kobject.h>
+#include <linux/klist.h>
#include <linux/list.h>
-#include <linux/spinlock.h>
+#include <linux/compiler.h>
#include <linux/types.h>
#include <linux/module.h>
#include <linux/pm.h>
#include <asm/semaphore.h>
#include <asm/atomic.h>
+#include <asm/device.h>
#define DEVICE_NAME_SIZE 50
#define DEVICE_NAME_HALF __stringify(20) /* Less than half to accommodate slop */
#define BUS_ID_SIZE KOBJ_NAME_LEN
-enum {
- SUSPEND_NOTIFY,
- SUSPEND_SAVE_STATE,
- SUSPEND_DISABLE,
- SUSPEND_POWER_DOWN,
-};
-
-enum {
- RESUME_POWER_ON,
- RESUME_RESTORE_STATE,
- RESUME_ENABLE,
-};
-
struct device;
struct device_driver;
struct class;
struct class_device;
-struct class_simple;
struct bus_type {
- char * name;
+ const char * name;
struct subsystem subsys;
struct kset drivers;
struct kset devices;
+ struct klist klist_devices;
+ struct klist klist_drivers;
+
+ struct blocking_notifier_head bus_notifier;
+
+ struct bus_attribute * bus_attrs;
+ struct device_attribute * dev_attrs;
+ struct driver_attribute * drv_attrs;
int (*match)(struct device * dev, struct device_driver * drv);
- struct device * (*add) (struct device * parent, char * bus_id);
- int (*hotplug) (struct device *dev, char **envp,
- int num_envp, char *buffer, int buffer_size);
- int (*suspend)(struct device * dev, u32 state);
- int (*resume)(struct device * dev);
+ int (*uevent)(struct device *dev, char **envp,
+ int num_envp, char *buffer, int buffer_size);
+ int (*probe)(struct device * dev);
+ int (*remove)(struct device * dev);
+ void (*shutdown)(struct device * dev);
+
+ int (*suspend)(struct device * dev, pm_message_t state);
+ int (*suspend_late)(struct device * dev, pm_message_t state);
+ int (*resume_early)(struct device * dev);
+ int (*resume)(struct device * dev);
};
-extern int bus_register(struct bus_type * bus);
+extern int __must_check bus_register(struct bus_type * bus);
extern void bus_unregister(struct bus_type * bus);
-extern int bus_rescan_devices(struct bus_type * bus);
-
-extern struct bus_type * get_bus(struct bus_type * bus);
-extern void put_bus(struct bus_type * bus);
-
-extern struct bus_type * find_bus(char * name);
+extern int __must_check bus_rescan_devices(struct bus_type * bus);
/* iterator helpers for buses */
int bus_for_each_dev(struct bus_type * bus, struct device * start, void * data,
int (*fn)(struct device *, void *));
+struct device * bus_find_device(struct bus_type *bus, struct device *start,
+ void *data, int (*match)(struct device *, void *));
+
+int __must_check bus_for_each_drv(struct bus_type *bus,
+ struct device_driver *start, void *data,
+ int (*fn)(struct device_driver *, void *));
-int bus_for_each_drv(struct bus_type * bus, struct device_driver * start,
- void * data, int (*fn)(struct device_driver *, void *));
+/*
+ * Bus notifiers: Get notified of addition/removal of devices
+ * and binding/unbinding of drivers to devices.
+ * In the long run, it should be a replacement for the platform
+ * notify hooks.
+ */
+struct notifier_block;
+extern int bus_register_notifier(struct bus_type *bus,
+ struct notifier_block *nb);
+extern int bus_unregister_notifier(struct bus_type *bus,
+ struct notifier_block *nb);
+
+/* All 4 notifers below get called with the target struct device *
+ * as an argument. Note that those functions are likely to be called
+ * with the device semaphore held in the core, so be careful.
+ */
+#define BUS_NOTIFY_ADD_DEVICE 0x00000001 /* device added */
+#define BUS_NOTIFY_DEL_DEVICE 0x00000002 /* device removed */
+#define BUS_NOTIFY_BOUND_DRIVER 0x00000003 /* driver bound to device */
+#define BUS_NOTIFY_UNBIND_DRIVER 0x00000004 /* driver about to be
+ unbound */
/* driverfs interface for exporting bus attributes */
};
#define BUS_ATTR(_name,_mode,_show,_store) \
-struct bus_attribute bus_attr_##_name = { \
- .attr = {.name = __stringify(_name), .mode = _mode, .owner = THIS_MODULE }, \
- .show = _show, \
- .store = _store, \
-};
+struct bus_attribute bus_attr_##_name = __ATTR(_name,_mode,_show,_store)
-extern int bus_create_file(struct bus_type *, struct bus_attribute *);
+extern int __must_check bus_create_file(struct bus_type *,
+ struct bus_attribute *);
extern void bus_remove_file(struct bus_type *, struct bus_attribute *);
struct device_driver {
- char * name;
+ const char * name;
struct bus_type * bus;
- struct semaphore unload_sem;
+ struct completion unloaded;
struct kobject kobj;
- struct list_head devices;
+ struct klist klist_devices;
+ struct klist_node knode_bus;
+
+ struct module * owner;
int (*probe) (struct device * dev);
- int (*remove) (struct device * dev);
+ int (*remove) (struct device * dev);
void (*shutdown) (struct device * dev);
- int (*suspend) (struct device * dev, u32 state, u32 level);
- int (*resume) (struct device * dev, u32 level);
+ int (*suspend) (struct device * dev, pm_message_t state);
+ int (*resume) (struct device * dev);
+
+ unsigned int multithread_probe:1;
};
-extern int driver_register(struct device_driver * drv);
+extern int __must_check driver_register(struct device_driver * drv);
extern void driver_unregister(struct device_driver * drv);
extern struct device_driver * get_driver(struct device_driver * drv);
extern void put_driver(struct device_driver * drv);
-
+extern struct device_driver *driver_find(const char *name, struct bus_type *bus);
+extern int driver_probe_done(void);
/* driverfs interface for exporting driver attributes */
};
#define DRIVER_ATTR(_name,_mode,_show,_store) \
-struct driver_attribute driver_attr_##_name = { \
- .attr = {.name = __stringify(_name), .mode = _mode, .owner = THIS_MODULE }, \
- .show = _show, \
- .store = _store, \
-};
+struct driver_attribute driver_attr_##_name = __ATTR(_name,_mode,_show,_store)
-extern int driver_create_file(struct device_driver *, struct driver_attribute *);
+extern int __must_check driver_create_file(struct device_driver *,
+ struct driver_attribute *);
extern void driver_remove_file(struct device_driver *, struct driver_attribute *);
+extern int __must_check driver_for_each_device(struct device_driver * drv,
+ struct device *start, void *data,
+ int (*fn)(struct device *, void *));
+struct device * driver_find_device(struct device_driver *drv,
+ struct device *start, void *data,
+ int (*match)(struct device *, void *));
/*
* device classes
*/
struct class {
- char * name;
+ const char * name;
+ struct module * owner;
struct subsystem subsys;
struct list_head children;
+ struct list_head devices;
struct list_head interfaces;
+ struct semaphore sem; /* locks both the children and interfaces lists */
+
+ struct kobject *virtual_dir;
- int (*hotplug)(struct class_device *dev, char **envp,
+ struct class_attribute * class_attrs;
+ struct class_device_attribute * class_dev_attrs;
+ struct device_attribute * dev_attrs;
+
+ int (*uevent)(struct class_device *dev, char **envp,
int num_envp, char *buffer, int buffer_size);
+ int (*dev_uevent)(struct device *dev, char **envp, int num_envp,
+ char *buffer, int buffer_size);
void (*release)(struct class_device *dev);
void (*class_release)(struct class *class);
+ void (*dev_release)(struct device *dev);
+
+ int (*suspend)(struct device *, pm_message_t state);
+ int (*resume)(struct device *);
};
-extern int class_register(struct class *);
+extern int __must_check class_register(struct class *);
extern void class_unregister(struct class *);
-extern struct class * class_get(struct class *);
-extern void class_put(struct class *);
-
struct class_attribute {
struct attribute attr;
};
#define CLASS_ATTR(_name,_mode,_show,_store) \
-struct class_attribute class_attr_##_name = { \
- .attr = {.name = __stringify(_name), .mode = _mode, .owner = THIS_MODULE }, \
- .show = _show, \
- .store = _store, \
-};
+struct class_attribute class_attr_##_name = __ATTR(_name,_mode,_show,_store)
-extern int class_create_file(struct class *, const struct class_attribute *);
+extern int __must_check class_create_file(struct class *,
+ const struct class_attribute *);
extern void class_remove_file(struct class *, const struct class_attribute *);
+struct class_device_attribute {
+ struct attribute attr;
+ ssize_t (*show)(struct class_device *, char * buf);
+ ssize_t (*store)(struct class_device *, const char * buf, size_t count);
+};
+
+#define CLASS_DEVICE_ATTR(_name,_mode,_show,_store) \
+struct class_device_attribute class_device_attr_##_name = \
+ __ATTR(_name,_mode,_show,_store)
+
+extern int __must_check class_device_create_file(struct class_device *,
+ const struct class_device_attribute *);
+/**
+ * struct class_device - class devices
+ * @class: pointer to the parent class for this class device. This is required.
+ * @devt: for internal use by the driver core only.
+ * @node: for internal use by the driver core only.
+ * @kobj: for internal use by the driver core only.
+ * @devt_attr: for internal use by the driver core only.
+ * @groups: optional additional groups to be created
+ * @dev: if set, a symlink to the struct device is created in the sysfs
+ * directory for this struct class device.
+ * @class_data: pointer to whatever you want to store here for this struct
+ * class_device. Use class_get_devdata() and class_set_devdata() to get and
+ * set this pointer.
+ * @parent: pointer to a struct class_device that is the parent of this struct
+ * class_device. If NULL, this class_device will show up at the root of the
+ * struct class in sysfs (which is probably what you want to have happen.)
+ * @release: pointer to a release function for this struct class_device. If
+ * set, this will be called instead of the class specific release function.
+ * Only use this if you want to override the default release function, like
+ * when you are nesting class_device structures.
+ * @uevent: pointer to a uevent function for this struct class_device. If
+ * set, this will be called instead of the class specific uevent function.
+ * Only use this if you want to override the default uevent function, like
+ * when you are nesting class_device structures.
+ */
struct class_device {
struct list_head node;
struct kobject kobj;
struct class * class; /* required */
+ dev_t devt; /* dev_t, creates the sysfs "dev" */
+ struct class_device_attribute *devt_attr;
+ struct class_device_attribute uevent_attr;
struct device * dev; /* not necessary, but nice to have */
void * class_data; /* class-specific data */
+ struct class_device *parent; /* parent of this child device, if there is one */
+ struct attribute_group ** groups; /* optional groups */
+ void (*release)(struct class_device *dev);
+ int (*uevent)(struct class_device *dev, char **envp,
+ int num_envp, char *buffer, int buffer_size);
char class_id[BUS_ID_SIZE]; /* unique to this class */
};
}
-extern int class_device_register(struct class_device *);
+extern int __must_check class_device_register(struct class_device *);
extern void class_device_unregister(struct class_device *);
extern void class_device_initialize(struct class_device *);
-extern int class_device_add(struct class_device *);
+extern int __must_check class_device_add(struct class_device *);
extern void class_device_del(struct class_device *);
extern int class_device_rename(struct class_device *, char *);
extern struct class_device * class_device_get(struct class_device *);
extern void class_device_put(struct class_device *);
-struct class_device_attribute {
- struct attribute attr;
- ssize_t (*show)(struct class_device *, char * buf);
- ssize_t (*store)(struct class_device *, const char * buf, size_t count);
-};
-
-#define CLASS_DEVICE_ATTR(_name,_mode,_show,_store) \
-struct class_device_attribute class_device_attr_##_name = { \
- .attr = {.name = __stringify(_name), .mode = _mode, .owner = THIS_MODULE }, \
- .show = _show, \
- .store = _store, \
-};
-
-extern int class_device_create_file(struct class_device *,
- const struct class_device_attribute *);
extern void class_device_remove_file(struct class_device *,
const struct class_device_attribute *);
-
+extern int __must_check class_device_create_bin_file(struct class_device *,
+ struct bin_attribute *);
+extern void class_device_remove_bin_file(struct class_device *,
+ struct bin_attribute *);
struct class_interface {
struct list_head node;
struct class *class;
- int (*add) (struct class_device *);
- void (*remove) (struct class_device *);
+ int (*add) (struct class_device *, struct class_interface *);
+ void (*remove) (struct class_device *, struct class_interface *);
+ int (*add_dev) (struct device *, struct class_interface *);
+ void (*remove_dev) (struct device *, struct class_interface *);
};
-extern int class_interface_register(struct class_interface *);
+extern int __must_check class_interface_register(struct class_interface *);
extern void class_interface_unregister(struct class_interface *);
-/* interface for class simple stuff */
-extern struct class_simple *class_simple_create(struct module *owner, char *name);
-extern void class_simple_destroy(struct class_simple *cs);
-extern struct class_device *class_simple_device_add(struct class_simple *cs, dev_t dev, struct device *device, const char *fmt, ...)
- __attribute__((format(printf,4,5)));
-extern int class_simple_set_hotplug(struct class_simple *,
- int (*hotplug)(struct class_device *dev, char **envp, int num_envp, char *buffer, int buffer_size));
-extern void class_simple_device_remove(dev_t dev);
+extern struct class *class_create(struct module *owner, const char *name);
+extern void class_destroy(struct class *cls);
+extern struct class_device *class_device_create(struct class *cls,
+ struct class_device *parent,
+ dev_t devt,
+ struct device *device,
+ const char *fmt, ...)
+ __attribute__((format(printf,5,6)));
+extern void class_device_destroy(struct class *cls, dev_t devt);
+
+/* interface for exporting device attributes */
+struct device_attribute {
+ struct attribute attr;
+ ssize_t (*show)(struct device *dev, struct device_attribute *attr,
+ char *buf);
+ ssize_t (*store)(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count);
+};
+#define DEVICE_ATTR(_name,_mode,_show,_store) \
+struct device_attribute dev_attr_##_name = __ATTR(_name,_mode,_show,_store)
+extern int __must_check device_create_file(struct device *device,
+ struct device_attribute * entry);
+extern void device_remove_file(struct device * dev, struct device_attribute * attr);
+extern int __must_check device_create_bin_file(struct device *dev,
+ struct bin_attribute *attr);
+extern void device_remove_bin_file(struct device *dev,
+ struct bin_attribute *attr);
struct device {
- struct list_head node; /* node in sibling list */
- struct list_head bus_list; /* node in bus's list */
- struct list_head driver_list;
- struct list_head children;
+ struct klist klist_children;
+ struct klist_node knode_parent; /* node in sibling list */
+ struct klist_node knode_driver;
+ struct klist_node knode_bus;
struct device * parent;
struct kobject kobj;
char bus_id[BUS_ID_SIZE]; /* position on parent bus */
+ unsigned is_registered:1;
+ struct device_attribute uevent_attr;
+ struct device_attribute *devt_attr;
+
+ struct semaphore sem; /* semaphore to synchronize calls to
+ * its driver.
+ */
struct bus_type * bus; /* type of bus device is on */
struct device_driver *driver; /* which driver has allocated this
device */
void *driver_data; /* data private to the driver */
- void *platform_data; /* Platform specific data (e.g. ACPI,
- BIOS data relevant to device) */
+ void *platform_data; /* Platform specific data, device
+ core doesn't touch it */
struct dev_pm_info power;
- u32 power_state; /* Current operating state. In
- ACPI-speak, this is D0-D3, D0
- being fully functional, and D3
- being off. */
-
- unsigned char *saved_state; /* saved device state */
- u32 detach_state; /* State to enter when device is
- detached from its driver. */
+#ifdef CONFIG_NUMA
+ int numa_node; /* NUMA node this device is close to */
+#endif
u64 *dma_mask; /* dma mask (if dma'able device) */
u64 coherent_dma_mask;/* Like dma_mask, but for
alloc_coherent mappings as
struct list_head dma_pools; /* dma pools (if dma'ble) */
+ struct dma_coherent_mem *dma_mem; /* internal for coherent mem
+ override */
+ /* arch specific additions */
+ struct dev_archdata archdata;
+
+ /* class_device migration path */
+ struct list_head node;
+ struct class *class; /* optional*/
+ dev_t devt; /* dev_t, creates the sysfs "dev" */
+ struct attribute_group **groups; /* optional groups */
+
void (*release)(struct device * dev);
};
-static inline struct device *
-list_to_dev(struct list_head *node)
+#ifdef CONFIG_NUMA
+static inline int dev_to_node(struct device *dev)
+{
+ return dev->numa_node;
+}
+static inline void set_dev_node(struct device *dev, int node)
{
- return list_entry(node, struct device, node);
+ dev->numa_node = node;
}
+#else
+static inline int dev_to_node(struct device *dev)
+{
+ return -1;
+}
+static inline void set_dev_node(struct device *dev, int node)
+{
+}
+#endif
static inline void *
dev_get_drvdata (struct device *dev)
dev->driver_data = data;
}
+static inline int device_is_registered(struct device *dev)
+{
+ return dev->is_registered;
+}
+
+void driver_init(void);
+
/*
* High level routines for use by the bus drivers
*/
-extern int device_register(struct device * dev);
+extern int __must_check device_register(struct device * dev);
extern void device_unregister(struct device * dev);
extern void device_initialize(struct device * dev);
-extern int device_add(struct device * dev);
+extern int __must_check device_add(struct device * dev);
extern void device_del(struct device * dev);
extern int device_for_each_child(struct device *, void *,
int (*fn)(struct device *, void *));
+extern struct device *device_find_child(struct device *, void *data,
+ int (*match)(struct device *, void *));
+extern int device_rename(struct device *dev, char *new_name);
+extern int device_move(struct device *dev, struct device *new_parent);
/*
- * Manual binding of a device to driver. See drivers/base/bus.c
+ * Manual binding of a device to driver. See drivers/base/bus.c
* for information on use.
*/
-extern void device_bind_driver(struct device * dev);
+extern int __must_check device_bind_driver(struct device *dev);
extern void device_release_driver(struct device * dev);
-extern void driver_attach(struct device_driver * drv);
-
-
-/* driverfs interface for exporting device attributes */
-
-struct device_attribute {
- struct attribute attr;
- ssize_t (*show)(struct device * dev, char * buf);
- ssize_t (*store)(struct device * dev, const char * buf, size_t count);
-};
-
-#define DEVICE_ATTR(_name,_mode,_show,_store) \
-struct device_attribute dev_attr_##_name = { \
- .attr = {.name = __stringify(_name), .mode = _mode, .owner = THIS_MODULE }, \
- .show = _show, \
- .store = _store, \
-};
-
+extern int __must_check device_attach(struct device * dev);
+extern int __must_check driver_attach(struct device_driver *drv);
+extern int __must_check device_reprobe(struct device *dev);
-extern int device_create_file(struct device *device, struct device_attribute * entry);
-extern void device_remove_file(struct device * dev, struct device_attribute * attr);
+/*
+ * Easy functions for dynamically creating devices on the fly
+ */
+extern struct device *device_create(struct class *cls, struct device *parent,
+ dev_t devt, const char *fmt, ...)
+ __attribute__((format(printf,4,5)));
+extern void device_destroy(struct class *cls, dev_t devt);
/*
* Platform "fixup" functions - allow the platform to have their say
*/
extern struct device * get_device(struct device * dev);
extern void put_device(struct device * dev);
-extern struct device *device_find(const char *name, struct bus_type *bus);
-
-
-/* drivers/base/platform.c */
-
-struct platform_device {
- char * name;
- u32 id;
- struct device dev;
- u32 num_resources;
- struct resource * resource;
-};
-
-#define to_platform_device(x) container_of((x), struct platform_device, dev)
-
-extern int platform_device_register(struct platform_device *);
-extern void platform_device_unregister(struct platform_device *);
-extern struct bus_type platform_bus_type;
-extern struct device platform_bus;
-/* drivers/base/power.c */
+/* drivers/base/power/shutdown.c */
extern void device_shutdown(void);
/* drivers/base/firmware.c */
-extern int firmware_register(struct subsystem *);
+extern int __must_check firmware_register(struct subsystem *);
extern void firmware_unregister(struct subsystem *);
/* debugging and troubleshooting/diagnostic helpers. */
+extern const char *dev_driver_string(struct device *dev);
#define dev_printk(level, dev, format, arg...) \
- printk(level "%s %s: " format , (dev)->driver->name , (dev)->bus_id , ## arg)
+ printk(level "%s %s: " format , dev_driver_string(dev) , (dev)->bus_id , ## arg)
#ifdef DEBUG
#define dev_dbg(dev, format, arg...) \
dev_printk(KERN_DEBUG , dev , format , ## arg)
#else
-#define dev_dbg(dev, format, arg...) do {} while (0)
+#define dev_dbg(dev, format, arg...) do { (void)(dev); } while (0)
#endif
#define dev_err(dev, format, arg...) \
dev_printk(KERN_INFO , dev , format , ## arg)
#define dev_warn(dev, format, arg...) \
dev_printk(KERN_WARNING , dev , format , ## arg)
+#define dev_notice(dev, format, arg...) \
+ dev_printk(KERN_NOTICE , dev , format , ## arg)
/* Create alias, so I can be autoloaded. */
#define MODULE_ALIAS_CHARDEV(major,minor) \
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