X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=include%2Flinux%2Fdevice.h;h=5ca1cdba563a43b4bc05cbe99b313203822add6b;hb=b7a3e813fb84624166f034e25234f98de5846bfc;hp=74246efba9319b8ea0f4531e38923a32a60518b5;hpb=d779249ed4cb3b50690de6de8448829d65a1cd08;p=linux-2.6-omap-h63xx.git diff --git a/include/linux/device.h b/include/linux/device.h index 74246efba93..5ca1cdba563 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -21,6 +21,7 @@ #include #include #include +#include #define DEVICE_NAME_SIZE 50 #define DEVICE_NAME_HALF __stringify(20) /* Less than half to accommodate slop */ @@ -42,6 +43,8 @@ struct bus_type { 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; @@ -75,6 +78,29 @@ int __must_check 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 */ struct bus_attribute { @@ -100,6 +126,7 @@ struct device_driver { struct klist_node knode_bus; struct module * owner; + const char * mod_name; /* used for built-in modules */ int (*probe) (struct device * dev); int (*remove) (struct device * dev); @@ -301,6 +328,13 @@ extern struct class_device *class_device_create(struct class *cls, __attribute__((format(printf,5,6))); extern void class_device_destroy(struct class *cls, dev_t devt); +struct device_type { + struct device_attribute *attrs; + int (*uevent)(struct device *dev, char **envp, int num_envp, + char *buffer, int buffer_size); + void (*release)(struct device *dev); +}; + /* interface for exporting device attributes */ struct device_attribute { struct attribute attr; @@ -329,6 +363,8 @@ struct device { struct kobject kobj; char bus_id[BUS_ID_SIZE]; /* position on parent bus */ + struct device_type *type; + unsigned is_registered:1; struct device_attribute uevent_attr; struct device_attribute *devt_attr; @@ -342,10 +378,11 @@ struct 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; +#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 @@ -357,16 +394,38 @@ struct device { 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*/ + struct class *class; dev_t devt; /* dev_t, creates the sysfs "dev" */ struct attribute_group **groups; /* optional groups */ + int uevent_suppress; void (*release)(struct device * dev); }; +#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) +{ + 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) { @@ -381,9 +440,11 @@ dev_set_drvdata (struct device *dev, void *data) static inline int device_is_registered(struct device *dev) { - return klist_node_attached(&dev->knode_bus); + return dev->is_registered; } +void driver_init(void); + /* * High level routines for use by the bus drivers */ @@ -392,9 +453,12 @@ extern void device_unregister(struct device * dev); extern void device_initialize(struct device * dev); extern int __must_check device_add(struct device * dev); extern void device_del(struct device * dev); -extern int __must_check device_for_each_child(struct device *, void *, +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 @@ -414,8 +478,6 @@ extern struct device *device_create(struct class *cls, struct device *parent, __attribute__((format(printf,4,5))); extern void device_destroy(struct class *cls, dev_t devt); -extern int virtual_device_parent(struct device *dev); - /* * Platform "fixup" functions - allow the platform to have their say * about devices and actions that the general device layer doesn't