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/*
* Copyright (c) 2012 NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#ifndef _LINUX_CPUONLINE_H
#define _LINUX_CPUONLINE_H
#include <linux/sysfs.h>
#include <linux/kobject.h>
#define CPUQUIET_NAME_LEN 16
struct cpuquiet_governor {
char name[CPUQUIET_NAME_LEN];
struct list_head governor_list;
int (*start) (void);
void (*stop) (void);
int (*store_active) (unsigned int cpu, bool active);
void (*device_free_notification) (void);
void (*device_busy_notification) (void);
struct module *owner;
};
struct cpuquiet_driver {
char name[CPUQUIET_NAME_LEN];
int (*quiesence_cpu) (unsigned int cpunumber);
int (*wake_cpu) (unsigned int cpunumber);
};
extern int cpuquiet_register_governor(struct cpuquiet_governor *gov);
extern void cpuquiet_unregister_governor(struct cpuquiet_governor *gov);
extern int cpuquiet_quiesence_cpu(unsigned int cpunumber);
extern int cpuquiet_wake_cpu(unsigned int cpunumber);
extern int cpuquiet_register_driver(struct cpuquiet_driver *drv);
extern void cpuquiet_unregister_driver(struct cpuquiet_driver *drv);
extern int cpuquiet_add_group(struct attribute_group *attrs);
extern void cpuquiet_remove_group(struct attribute_group *attrs);
extern void cpuquiet_device_busy(void);
extern void cpuquiet_device_free(void);
int cpuquiet_kobject_init(struct kobject *kobj, struct kobj_type *type,
char *name);
extern unsigned int nr_cluster_ids;
/* Sysfs support */
struct cpuquiet_attribute {
struct attribute attr;
ssize_t (*show)(struct cpuquiet_attribute *attr, char *buf);
ssize_t (*store)(struct cpuquiet_attribute *attr, const char *buf,
size_t count);
/* Optional. Called after store is called */
void (*store_callback)(struct cpuquiet_attribute *attr);
void *param;
};
#define CPQ_ATTRIBUTE(_name, _mode, _type, _callback) \
static struct cpuquiet_attribute _name ## _attr = { \
.attr = {.name = __stringify(_name), .mode = _mode }, \
.show = show_ ## _type ## _attribute, \
.store = store_ ## _type ## _attribute, \
.store_callback = _callback, \
.param = &_name, \
}
#define CPQ_BASIC_ATTRIBUTE(_name, _mode, _type) \
CPQ_ATTRIBUTE(_name, _mode, _type, NULL)
#define CPQ_ATTRIBUTE_CUSTOM(_name, _mode, _show, _store) \
static struct cpuquiet_attribute _name ## _attr = { \
.attr = {.name = __stringify(_name), .mode = _mode }, \
.show = _show, \
.store = _store \
.store_callback = NULL, \
.param = &_name, \
}
extern ssize_t show_int_attribute(struct cpuquiet_attribute *cattr, char *buf);
extern ssize_t store_int_attribute(struct cpuquiet_attribute *cattr,
const char *buf, size_t count);
extern ssize_t show_bool_attribute(struct cpuquiet_attribute *cattr, char *buf);
extern ssize_t store_bool_attribute(struct cpuquiet_attribute *cattr,
const char *buf, size_t count);
extern ssize_t store_uint_attribute(struct cpuquiet_attribute *cattr,
const char *buf, size_t count);
extern ssize_t show_uint_attribute(struct cpuquiet_attribute *cattr, char *buf);
extern ssize_t store_ulong_attribute(struct cpuquiet_attribute *cattr,
const char *buf, size_t count);
extern ssize_t show_ulong_attribute(struct cpuquiet_attribute *cattr,
char *buf);
extern ssize_t cpuquiet_auto_sysfs_show(struct kobject *kobj,
struct attribute *attr, char *buf);
extern ssize_t cpuquiet_auto_sysfs_store(struct kobject *kobj,
struct attribute *attr, const char *buf,
size_t count);
#endif
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