1/*
2   md_u.h : user <=> kernel API between Linux raidtools and RAID drivers
3          Copyright (C) 1998 Ingo Molnar
4
5   This program is free software; you can redistribute it and/or modify
6   it under the terms of the GNU General Public License as published by
7   the Free Software Foundation; either version 2, or (at your option)
8   any later version.
9
10   You should have received a copy of the GNU General Public License
11   (for example /usr/src/linux/COPYING); if not, write to the Free
12   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
13*/
14
15#ifndef _MD_U_H
16#define _MD_U_H
17
18/* ioctls */
19
20/* status */
21#define RAID_VERSION		_IOR (MD_MAJOR, 0x10, mdu_version_t)
22#define GET_ARRAY_INFO		_IOR (MD_MAJOR, 0x11, mdu_array_info_t)
23#define GET_DISK_INFO		_IOR (MD_MAJOR, 0x12, mdu_disk_info_t)
24#define PRINT_RAID_DEBUG	_IO (MD_MAJOR, 0x13)
25#define RAID_AUTORUN		_IO (MD_MAJOR, 0x14)
26
27/* configuration */
28#define CLEAR_ARRAY		_IO (MD_MAJOR, 0x20)
29#define ADD_NEW_DISK		_IOW (MD_MAJOR, 0x21, mdu_disk_info_t)
30#define HOT_REMOVE_DISK		_IO (MD_MAJOR, 0x22)
31#define SET_ARRAY_INFO		_IOW (MD_MAJOR, 0x23, mdu_array_info_t)
32#define SET_DISK_INFO		_IO (MD_MAJOR, 0x24)
33#define WRITE_RAID_INFO		_IO (MD_MAJOR, 0x25)
34#define UNPROTECT_ARRAY		_IO (MD_MAJOR, 0x26)
35#define PROTECT_ARRAY		_IO (MD_MAJOR, 0x27)
36#define HOT_ADD_DISK		_IO (MD_MAJOR, 0x28)
37#define SET_DISK_FAULTY		_IO (MD_MAJOR, 0x29)
38#define HOT_GENERATE_ERROR	_IO (MD_MAJOR, 0x2a)
39
40/* usage */
41#define RUN_ARRAY		_IOW (MD_MAJOR, 0x30, mdu_param_t)
42#define START_ARRAY		_IO (MD_MAJOR, 0x31)
43#define STOP_ARRAY		_IO (MD_MAJOR, 0x32)
44#define STOP_ARRAY_RO		_IO (MD_MAJOR, 0x33)
45#define RESTART_ARRAY_RW	_IO (MD_MAJOR, 0x34)
46
47typedef struct mdu_version_s {
48	int major;
49	int minor;
50	int patchlevel;
51} mdu_version_t;
52
53typedef struct mdu_array_info_s {
54	/*
55	 * Generic constant information
56	 */
57	int major_version;
58	int minor_version;
59	int patch_version;
60	int ctime;
61	int level;
62	int size;
63	int nr_disks;
64	int raid_disks;
65	int md_minor;
66	int not_persistent;
67
68	/*
69	 * Generic state information
70	 */
71	int utime;		/*  0 Superblock update time		      */
72	int state;		/*  1 State bits (clean, ...)		      */
73	int active_disks;	/*  2 Number of currently active disks	      */
74	int working_disks;	/*  3 Number of working disks		      */
75	int failed_disks;	/*  4 Number of failed disks		      */
76	int spare_disks;	/*  5 Number of spare disks		      */
77
78	/*
79	 * Personality information
80	 */
81	int layout;		/*  0 the array's physical layout	      */
82	int chunk_size;	/*  1 chunk size in bytes		      */
83
84} mdu_array_info_t;
85
86typedef struct mdu_disk_info_s {
87	/*
88	 * configuration/status of one particular disk
89	 */
90	int number;
91	int major;
92	int minor;
93	int raid_disk;
94	int state;
95
96} mdu_disk_info_t;
97
98typedef struct mdu_start_info_s {
99	/*
100	 * configuration/status of one particular disk
101	 */
102	int major;
103	int minor;
104	int raid_disk;
105	int state;
106
107} mdu_start_info_t;
108
109typedef struct mdu_param_s
110{
111	int			personality;	/* 1,2,3,4 */
112	int			chunk_size;	/* in bytes */
113	int			max_fault;	/* unused for now */
114} mdu_param_t;
115
116#endif
117
118