Add a 00-INDEX file to Documentation/mips/
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / include / linux / raid_class.h
blobd22ad392242ac811bf1c432c89b4c18592dbd987
1 /*
2 * raid_class.h - a generic raid visualisation class
4 * Copyright (c) 2005 - James Bottomley <James.Bottomley@steeleye.com>
6 * This file is licensed under GPLv2
7 */
8 #include <linux/transport_class.h>
10 struct raid_template {
11 struct transport_container raid_attrs;
14 struct raid_function_template {
15 void *cookie;
16 int (*is_raid)(struct device *);
17 void (*get_resync)(struct device *);
18 void (*get_state)(struct device *);
21 enum raid_state {
22 RAID_STATE_UNKNOWN = 0,
23 RAID_STATE_ACTIVE,
24 RAID_STATE_DEGRADED,
25 RAID_STATE_RESYNCING,
26 RAID_STATE_OFFLINE,
29 enum raid_level {
30 RAID_LEVEL_UNKNOWN = 0,
31 RAID_LEVEL_LINEAR,
32 RAID_LEVEL_0,
33 RAID_LEVEL_1,
34 RAID_LEVEL_10,
35 RAID_LEVEL_3,
36 RAID_LEVEL_4,
37 RAID_LEVEL_5,
38 RAID_LEVEL_50,
39 RAID_LEVEL_6,
42 struct raid_data {
43 struct list_head component_list;
44 int component_count;
45 enum raid_level level;
46 enum raid_state state;
47 int resync;
50 /* resync complete goes from 0 to this */
51 #define RAID_MAX_RESYNC (10000)
53 #define DEFINE_RAID_ATTRIBUTE(type, attr) \
54 static inline void \
55 raid_set_##attr(struct raid_template *r, struct device *dev, type value) { \
56 struct class_device *cdev = \
57 attribute_container_find_class_device(&r->raid_attrs.ac, dev);\
58 struct raid_data *rd; \
59 BUG_ON(!cdev); \
60 rd = class_get_devdata(cdev); \
61 rd->attr = value; \
62 } \
63 static inline type \
64 raid_get_##attr(struct raid_template *r, struct device *dev) { \
65 struct class_device *cdev = \
66 attribute_container_find_class_device(&r->raid_attrs.ac, dev);\
67 struct raid_data *rd; \
68 BUG_ON(!cdev); \
69 rd = class_get_devdata(cdev); \
70 return rd->attr; \
73 DEFINE_RAID_ATTRIBUTE(enum raid_level, level)
74 DEFINE_RAID_ATTRIBUTE(int, resync)
75 DEFINE_RAID_ATTRIBUTE(enum raid_state, state)
77 struct raid_template *raid_class_attach(struct raid_function_template *);
78 void raid_class_release(struct raid_template *);
80 int __must_check raid_component_add(struct raid_template *, struct device *,
81 struct device *);