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 
47 typedef struct mdu_version_s {
48 	int major;
49 	int minor;
50 	int patchlevel;
51 } mdu_version_t;
52 
53 typedef 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 
86 typedef 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 
98 typedef 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 
109 typedef 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