PCI: remove deprecated pci_find_slot() interface
[linux-2.6.git] / include / linux / raid_class.h
1 /*
2  * raid_class.h - a generic raid visualisation class
3  *
4  * Copyright (c) 2005 - James Bottomley <James.Bottomley@steeleye.com>
5  *
6  * This file is licensed under GPLv2
7  */
8 #include <linux/transport_class.h>
9
10 struct raid_template {
11         struct transport_container raid_attrs;
12 };
13
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 *);
19 };
20
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,
27 };
28
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,
40 };
41
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;
48 };
49
50 /* resync complete goes from 0 to this */
51 #define RAID_MAX_RESYNC         (10000)
52
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 device *device =                                               \
57                 attribute_container_find_class_device(&r->raid_attrs.ac, dev);\
58         struct raid_data *rd;                                                 \
59         BUG_ON(!device);                                                      \
60         rd = dev_get_drvdata(device);                                         \
61         rd->attr = value;                                                     \
62 }                                                                             \
63 static inline type                                                            \
64 raid_get_##attr(struct raid_template *r, struct device *dev) {                \
65         struct device *device =                                               \
66                 attribute_container_find_class_device(&r->raid_attrs.ac, dev);\
67         struct raid_data *rd;                                                 \
68         BUG_ON(!device);                                                      \
69         rd = dev_get_drvdata(device);                                         \
70         return rd->attr;                                                      \
71 }
72
73 DEFINE_RAID_ATTRIBUTE(enum raid_level, level)
74 DEFINE_RAID_ATTRIBUTE(int, resync)
75 DEFINE_RAID_ATTRIBUTE(enum raid_state, state)
76         
77 struct raid_template *raid_class_attach(struct raid_function_template *);
78 void raid_class_release(struct raid_template *);
79
80 int __must_check raid_component_add(struct raid_template *, struct device *,
81                                     struct device *);
82