http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/linux/device.h

/* * device.h - generic, centralized driver model * * Copyright (c) 2001-2003 Patrick Mochel <mochel@osdl.org> * * This file is released under the GPLv2 * * See Documentation/driver-model/ for more information. */ #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/types.h> #include <linux/module.h> #include <linux/pm.h> #include <asm/semaphore.h> #include <asm/atomic.h> #define DEVICE_NAME_SIZE 50 #define DEVICE_NAME_HALF __stringify(20) /* Less than half to accommodate slop */ #define DEVICE_ID_SIZE 32 #define BUS_ID_SIZE KOBJ_NAME_LEN struct device; struct device_driver; struct class; struct class_device; struct bus_type { const char * name; struct subsystem subsys; struct kset drivers; struct kset devices; struct klist klist_devices; struct klist klist_drivers; struct bus_attribute * bus_attrs; struct device_attribute * dev_attrs; struct driver_attribute * drv_attrs; int (*match)(struct device * dev, struct device_driver * drv); 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 (*resume)(struct device * dev); }; extern int bus_register(struct bus_type * bus); extern void bus_unregister(struct bus_type * bus); extern void 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); /* 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 bus_for_each_drv(struct bus_type * bus, struct device_driver * start, void * data, int (*fn)(struct device_driver *, void *)); /* driverfs interface for exporting bus attributes */ struct bus_attribute { struct attribute attr; ssize_t (*show)(struct bus_type *, char * buf); ssize_t (*store)(struct bus_type *, const char * buf, size_t count); }; #define BUS_ATTR(_name,_mode,_show,_store) \ struct bus_attribute bus_attr_##_name = __ATTR(_name,_mode,_show,_store) extern int bus_create_file(struct bus_type *, struct bus_attribute *); extern void bus_remove_file(struct bus_type *, struct bus_attribute *); struct device_driver { const char * name; struct bus_type * bus; struct completion unloaded; struct kobject kobj; struct klist klist_devices; struct klist_node knode_bus; struct module * owner; 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 (*resume) (struct device * dev); }; extern int 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); /* driverfs interface for exporting driver attributes */ struct driver_attribute { struct attribute attr; ssize_t (*show)(struct device_driver *, char * buf); ssize_t (*store)(struct device_driver *, const char * buf, size_t count); }; #define DRIVER_ATTR(_name,_mode,_show,_store) \ struct driver_attribute driver_attr_##_name = __ATTR(_name,_mode,_show,_store) extern int driver_create_file(struct device_driver *, struct driver_attribute *); extern void driver_remove_file(struct device_driver *, struct driver_attribute *); extern int 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 { const char * name; struct module * owner; struct subsystem subsys; struct list_head children; struct list_head interfaces; struct semaphore sem; /* locks both the children and interfaces lists */ struct class_attribute * class_attrs; struct class_device_attribute * class_dev_attrs; int (*uevent)(struct class_device *dev, char **envp, int num_envp, char *buffer, int buffer_size); void (*release)(struct class_device *dev); void (*class_release)(struct class *class); }; extern int 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; ssize_t (*show)(struct class *, char * buf); ssize_t (*store)(struct class *, const char * buf, size_t count); }; #define CLASS_ATTR(_name,_mode,_show,_store) \ struct class_attribute class_attr_##_name = __ATTR(_name,_mode,_show,_store) extern int 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 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. * @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 */ 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 */ }; static inline void * class_get_devdata (struct class_device *dev) { return dev->class_data; } static inline void class_set_devdata (struct class_device *dev, void *data) { dev->class_data = data; } extern int 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 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 *); extern void class_device_remove_file(struct class_device *, const struct class_device_attribute *); extern int 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 *, struct class_interface *); void (*remove) (struct class_device *, struct class_interface *); }; extern int class_interface_register(struct class_interface *); extern void class_interface_unregister(struct class_interface *); extern struct class *class_create(struct module *owner, 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, 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 device_create_file(struct device *device, struct device_attribute * entry); extern void device_remove_file(struct device * dev, struct device_attribute * attr); struct device { 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 */ struct device_attribute uevent_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, device core doesn't touch it */ void *firmware_data; /* Firmware specific data (e.g. ACPI, BIOS data),reserved for device core*/ struct dev_pm_info power; u64 *dma_mask; /* dma mask (if dma'able device) */ u64 coherent_dma_mask;/* Like dma_mask, but for alloc_coherent mappings as not all hardware supports 64 bit addresses for consistent allocations such descriptors. */ struct list_head dma_pools; /* dma pools (if dma'ble) */ struct dma_coherent_mem *dma_mem; /* internal for coherent mem override */ void (*release)(struct device * dev); }; static inline void * dev_get_drvdata (struct device *dev) { return dev->driver_data; } static inline void dev_set_drvdata (struct device *dev, void *data) { dev->driver_data = data; } static inline int device_is_registered(struct device *dev) { return klist_node_attached(&dev->knode_bus); } /* * High level routines for use by the bus drivers */ extern int 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 void device_del(struct device * dev); extern int device_for_each_child(struct device *, void *, int (*fn)(struct device *, void *)); /* * 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 void device_release_driver(struct device * dev); extern int device_attach(struct device * dev); extern void driver_attach(struct device_driver * drv); /* * Platform "fixup" functions - allow the platform to have their say * about devices and actions that the general device layer doesn't * know about. */ /* Notify platform of device discovery */ extern int (*platform_notify)(struct device * dev); extern int (*platform_notify_remove)(struct device * dev); /** * get_device - atomically increment the reference count for the device. * */ extern struct device * get_device(struct device * dev); extern void put_device(struct device * dev); /* drivers/base/power.c */ extern void device_shutdown(void); /* drivers/base/firmware.c */ extern int firmware_register(struct subsystem *); extern void firmware_unregister(struct subsystem *); /* debugging and troubleshooting/diagnostic helpers. */ #define dev_printk(level, dev, format, arg...) \ printk(level "%s %s: " format , (dev)->driver ? (dev)->driver->name : "" , (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 { (void)(dev); } while (0) #endif #define dev_err(dev, format, arg...) \ dev_printk(KERN_ERR , dev , format , ## arg) #define dev_info(dev, format, arg...) \ dev_printk(KERN_INFO , dev , format , ## arg) #define dev_warn(dev, format, arg...) \ dev_printk(KERN_WARNING , dev , format , ## arg) /* Create alias, so I can be autoloaded. */ #define MODULE_ALIAS_CHARDEV(major,minor) \ MODULE_ALIAS("char-major-" __stringify(major) "-" __stringify(minor)) #define MODULE_ALIAS_CHARDEV_MAJOR(major) \ MODULE_ALIAS("char-major-" __stringify(major) "-*") #endif /* _DEVICE_H_ */