mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-27 00:30:57 +07:00
9d1fe3236a
* Add cpu_sysdev_class functions to display the following maps
with cpulist_scnprintf().
cpu_online_map
cpu_present_map
cpu_possible_map
* Small change to include/linux/sysdev.h to allow the attribute
name and label to be different (to avoid collision with the
"attr_online" entry for bringing cpus on- and off-line.)
Cc: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
122 lines
3.4 KiB
C
122 lines
3.4 KiB
C
/**
|
|
* System devices follow a slightly different driver model.
|
|
* They don't need to do dynammic driver binding, can't be probed,
|
|
* and don't reside on any type of peripheral bus.
|
|
* So, we represent and treat them a little differently.
|
|
*
|
|
* We still have a notion of a driver for a system device, because we still
|
|
* want to perform basic operations on these devices.
|
|
*
|
|
* We also support auxillary drivers binding to devices of a certain class.
|
|
*
|
|
* This allows configurable drivers to register themselves for devices of
|
|
* a certain type. And, it allows class definitions to reside in generic
|
|
* code while arch-specific code can register specific drivers.
|
|
*
|
|
* Auxillary drivers registered with a NULL cls are registered as drivers
|
|
* for all system devices, and get notification calls for each device.
|
|
*/
|
|
|
|
|
|
#ifndef _SYSDEV_H_
|
|
#define _SYSDEV_H_
|
|
|
|
#include <linux/kobject.h>
|
|
#include <linux/module.h>
|
|
#include <linux/pm.h>
|
|
|
|
|
|
struct sys_device;
|
|
|
|
struct sysdev_class {
|
|
const char *name;
|
|
struct list_head drivers;
|
|
|
|
/* Default operations for these types of devices */
|
|
int (*shutdown)(struct sys_device *);
|
|
int (*suspend)(struct sys_device *, pm_message_t state);
|
|
int (*resume)(struct sys_device *);
|
|
struct kset kset;
|
|
};
|
|
|
|
struct sysdev_class_attribute {
|
|
struct attribute attr;
|
|
ssize_t (*show)(struct sysdev_class *, char *);
|
|
ssize_t (*store)(struct sysdev_class *, const char *, size_t);
|
|
};
|
|
|
|
#define _SYSDEV_CLASS_ATTR(_name,_mode,_show,_store) \
|
|
{ \
|
|
.attr = {.name = __stringify(_name), .mode = _mode }, \
|
|
.show = _show, \
|
|
.store = _store, \
|
|
}
|
|
|
|
#define SYSDEV_CLASS_ATTR(_name,_mode,_show,_store) \
|
|
struct sysdev_class_attribute attr_##_name = \
|
|
_SYSDEV_CLASS_ATTR(_name,_mode,_show,_store)
|
|
|
|
|
|
extern int sysdev_class_register(struct sysdev_class *);
|
|
extern void sysdev_class_unregister(struct sysdev_class *);
|
|
|
|
extern int sysdev_class_create_file(struct sysdev_class *,
|
|
struct sysdev_class_attribute *);
|
|
extern void sysdev_class_remove_file(struct sysdev_class *,
|
|
struct sysdev_class_attribute *);
|
|
/**
|
|
* Auxillary system device drivers.
|
|
*/
|
|
|
|
struct sysdev_driver {
|
|
struct list_head entry;
|
|
int (*add)(struct sys_device *);
|
|
int (*remove)(struct sys_device *);
|
|
int (*shutdown)(struct sys_device *);
|
|
int (*suspend)(struct sys_device *, pm_message_t state);
|
|
int (*resume)(struct sys_device *);
|
|
};
|
|
|
|
|
|
extern int sysdev_driver_register(struct sysdev_class *, struct sysdev_driver *);
|
|
extern void sysdev_driver_unregister(struct sysdev_class *, struct sysdev_driver *);
|
|
|
|
|
|
/**
|
|
* sys_devices can be simplified a lot from regular devices, because they're
|
|
* simply not as versatile.
|
|
*/
|
|
|
|
struct sys_device {
|
|
u32 id;
|
|
struct sysdev_class * cls;
|
|
struct kobject kobj;
|
|
};
|
|
|
|
extern int sysdev_register(struct sys_device *);
|
|
extern void sysdev_unregister(struct sys_device *);
|
|
|
|
|
|
struct sysdev_attribute {
|
|
struct attribute attr;
|
|
ssize_t (*show)(struct sys_device *, char *);
|
|
ssize_t (*store)(struct sys_device *, const char *, size_t);
|
|
};
|
|
|
|
|
|
#define _SYSDEV_ATTR(_name, _mode, _show, _store) \
|
|
{ \
|
|
.attr = { .name = __stringify(_name), .mode = _mode }, \
|
|
.show = _show, \
|
|
.store = _store, \
|
|
}
|
|
|
|
#define SYSDEV_ATTR(_name, _mode, _show, _store) \
|
|
struct sysdev_attribute attr_##_name = \
|
|
_SYSDEV_ATTR(_name, _mode, _show, _store);
|
|
|
|
extern int sysdev_create_file(struct sys_device *, struct sysdev_attribute *);
|
|
extern void sysdev_remove_file(struct sys_device *, struct sysdev_attribute *);
|
|
|
|
#endif /* _SYSDEV_H_ */
|