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d569d5bb JB |
1 | /* |
2 | * Enclosure Services | |
3 | * | |
4 | * Copyright (C) 2008 James Bottomley <James.Bottomley@HansenPartnership.com> | |
5 | * | |
6 | **----------------------------------------------------------------------------- | |
7 | ** | |
8 | ** This program is free software; you can redistribute it and/or | |
9 | ** modify it under the terms of the GNU General Public License | |
10 | ** version 2 as published by the Free Software Foundation. | |
11 | ** | |
12 | ** This program is distributed in the hope that it will be useful, | |
13 | ** but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | ** GNU General Public License for more details. | |
16 | ** | |
17 | ** You should have received a copy of the GNU General Public License | |
18 | ** along with this program; if not, write to the Free Software | |
19 | ** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
20 | ** | |
21 | **----------------------------------------------------------------------------- | |
22 | */ | |
23 | #ifndef _LINUX_ENCLOSURE_H_ | |
24 | #define _LINUX_ENCLOSURE_H_ | |
25 | ||
26 | #include <linux/device.h> | |
27 | #include <linux/list.h> | |
28 | ||
29 | /* A few generic types ... taken from ses-2 */ | |
30 | enum enclosure_component_type { | |
31 | ENCLOSURE_COMPONENT_DEVICE = 0x01, | |
32 | ENCLOSURE_COMPONENT_ARRAY_DEVICE = 0x17, | |
33 | }; | |
34 | ||
35 | /* ses-2 common element status */ | |
36 | enum enclosure_status { | |
37 | ENCLOSURE_STATUS_UNSUPPORTED = 0, | |
38 | ENCLOSURE_STATUS_OK, | |
39 | ENCLOSURE_STATUS_CRITICAL, | |
40 | ENCLOSURE_STATUS_NON_CRITICAL, | |
41 | ENCLOSURE_STATUS_UNRECOVERABLE, | |
42 | ENCLOSURE_STATUS_NOT_INSTALLED, | |
43 | ENCLOSURE_STATUS_UNKNOWN, | |
44 | ENCLOSURE_STATUS_UNAVAILABLE, | |
45 | }; | |
46 | ||
47 | /* SFF-8485 activity light settings */ | |
48 | enum enclosure_component_setting { | |
49 | ENCLOSURE_SETTING_DISABLED = 0, | |
50 | ENCLOSURE_SETTING_ENABLED = 1, | |
51 | ENCLOSURE_SETTING_BLINK_A_ON_OFF = 2, | |
52 | ENCLOSURE_SETTING_BLINK_A_OFF_ON = 3, | |
53 | ENCLOSURE_SETTING_BLINK_B_ON_OFF = 6, | |
54 | ENCLOSURE_SETTING_BLINK_B_OFF_ON = 7, | |
55 | }; | |
56 | ||
57 | struct enclosure_device; | |
58 | struct enclosure_component; | |
59 | struct enclosure_component_callbacks { | |
60 | void (*get_status)(struct enclosure_device *, | |
61 | struct enclosure_component *); | |
62 | int (*set_status)(struct enclosure_device *, | |
63 | struct enclosure_component *, | |
64 | enum enclosure_status); | |
65 | void (*get_fault)(struct enclosure_device *, | |
66 | struct enclosure_component *); | |
67 | int (*set_fault)(struct enclosure_device *, | |
68 | struct enclosure_component *, | |
69 | enum enclosure_component_setting); | |
70 | void (*get_active)(struct enclosure_device *, | |
71 | struct enclosure_component *); | |
72 | int (*set_active)(struct enclosure_device *, | |
73 | struct enclosure_component *, | |
74 | enum enclosure_component_setting); | |
75 | void (*get_locate)(struct enclosure_device *, | |
76 | struct enclosure_component *); | |
77 | int (*set_locate)(struct enclosure_device *, | |
78 | struct enclosure_component *, | |
79 | enum enclosure_component_setting); | |
80 | }; | |
81 | ||
82 | ||
83 | struct enclosure_component { | |
84 | void *scratch; | |
85 | struct class_device cdev; | |
86 | enum enclosure_component_type type; | |
87 | int number; | |
88 | int fault; | |
89 | int active; | |
90 | int locate; | |
91 | enum enclosure_status status; | |
92 | }; | |
93 | ||
94 | struct enclosure_device { | |
95 | void *scratch; | |
96 | struct list_head node; | |
97 | struct class_device cdev; | |
98 | struct enclosure_component_callbacks *cb; | |
99 | int components; | |
100 | struct enclosure_component component[0]; | |
101 | }; | |
102 | ||
103 | static inline struct enclosure_device * | |
104 | to_enclosure_device(struct class_device *dev) | |
105 | { | |
106 | return container_of(dev, struct enclosure_device, cdev); | |
107 | } | |
108 | ||
109 | static inline struct enclosure_component * | |
110 | to_enclosure_component(struct class_device *dev) | |
111 | { | |
112 | return container_of(dev, struct enclosure_component, cdev); | |
113 | } | |
114 | ||
115 | struct enclosure_device * | |
116 | enclosure_register(struct device *, const char *, int, | |
117 | struct enclosure_component_callbacks *); | |
118 | void enclosure_unregister(struct enclosure_device *); | |
119 | struct enclosure_component * | |
120 | enclosure_component_register(struct enclosure_device *, unsigned int, | |
121 | enum enclosure_component_type, const char *); | |
122 | int enclosure_add_device(struct enclosure_device *enclosure, int component, | |
123 | struct device *dev); | |
124 | int enclosure_remove_device(struct enclosure_device *enclosure, int component); | |
125 | struct enclosure_device *enclosure_find(struct device *dev); | |
126 | int enclosure_for_each_device(int (*fn)(struct enclosure_device *, void *), | |
127 | void *data); | |
128 | ||
129 | #endif /* _LINUX_ENCLOSURE_H_ */ |