mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-24 09:50:04 +00:00
![Thomas Gleixner](/assets/img/avatar_default.png)
Based on 1 normalized pattern(s): this file is licensed under gplv2 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 22 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Armijn Hemel <armijn@tjaldur.nl> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190531190115.129548190@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
83 lines
2.1 KiB
C
83 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* raid_class.h - a generic raid visualisation class
|
|
*
|
|
* Copyright (c) 2005 - James Bottomley <James.Bottomley@steeleye.com>
|
|
*/
|
|
#include <linux/transport_class.h>
|
|
|
|
struct raid_template {
|
|
struct transport_container raid_attrs;
|
|
};
|
|
|
|
struct raid_function_template {
|
|
void *cookie;
|
|
int (*is_raid)(struct device *);
|
|
void (*get_resync)(struct device *);
|
|
void (*get_state)(struct device *);
|
|
};
|
|
|
|
enum raid_state {
|
|
RAID_STATE_UNKNOWN = 0,
|
|
RAID_STATE_ACTIVE,
|
|
RAID_STATE_DEGRADED,
|
|
RAID_STATE_RESYNCING,
|
|
RAID_STATE_OFFLINE,
|
|
};
|
|
|
|
enum raid_level {
|
|
RAID_LEVEL_UNKNOWN = 0,
|
|
RAID_LEVEL_LINEAR,
|
|
RAID_LEVEL_0,
|
|
RAID_LEVEL_1,
|
|
RAID_LEVEL_10,
|
|
RAID_LEVEL_1E,
|
|
RAID_LEVEL_3,
|
|
RAID_LEVEL_4,
|
|
RAID_LEVEL_5,
|
|
RAID_LEVEL_50,
|
|
RAID_LEVEL_6,
|
|
RAID_LEVEL_JBOD,
|
|
};
|
|
|
|
struct raid_data {
|
|
struct list_head component_list;
|
|
int component_count;
|
|
enum raid_level level;
|
|
enum raid_state state;
|
|
int resync;
|
|
};
|
|
|
|
/* resync complete goes from 0 to this */
|
|
#define RAID_MAX_RESYNC (10000)
|
|
|
|
#define DEFINE_RAID_ATTRIBUTE(type, attr) \
|
|
static inline void \
|
|
raid_set_##attr(struct raid_template *r, struct device *dev, type value) { \
|
|
struct device *device = \
|
|
attribute_container_find_class_device(&r->raid_attrs.ac, dev);\
|
|
struct raid_data *rd; \
|
|
BUG_ON(!device); \
|
|
rd = dev_get_drvdata(device); \
|
|
rd->attr = value; \
|
|
} \
|
|
static inline type \
|
|
raid_get_##attr(struct raid_template *r, struct device *dev) { \
|
|
struct device *device = \
|
|
attribute_container_find_class_device(&r->raid_attrs.ac, dev);\
|
|
struct raid_data *rd; \
|
|
BUG_ON(!device); \
|
|
rd = dev_get_drvdata(device); \
|
|
return rd->attr; \
|
|
}
|
|
|
|
DEFINE_RAID_ATTRIBUTE(enum raid_level, level)
|
|
DEFINE_RAID_ATTRIBUTE(int, resync)
|
|
DEFINE_RAID_ATTRIBUTE(enum raid_state, state)
|
|
|
|
struct raid_template *raid_class_attach(struct raid_function_template *);
|
|
void raid_class_release(struct raid_template *);
|
|
|
|
int __must_check raid_component_add(struct raid_template *, struct device *,
|
|
struct device *);
|
|
|