summaryrefslogtreecommitdiffstats
path: root/include/linux/chio.h
blob: d9bac7f97282e3596a5736be5614b606e5c09561 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
/*
 * ioctl interface for the scsi media changer driver
 */

/* changer element types */
#define CHET_MT   0	/* media transport element (robot) */
#define CHET_ST   1	/* storage element (media slots) */
#define CHET_IE   2	/* import/export element */
#define CHET_DT   3	/* data transfer element (tape/cdrom/whatever) */
#define CHET_V1   4	/* vendor specific #1 */
#define CHET_V2   5	/* vendor specific #2 */
#define CHET_V3   6	/* vendor specific #3 */
#define CHET_V4   7	/* vendor specific #4 */


/*
 * CHIOGPARAMS
 *    query changer properties
 *
 * CHIOVGPARAMS
 *    query vendor-specific element types
 *
 *    accessing elements works by specifing type and unit of the element.
 *    for example, storage elements are addressed with type = CHET_ST and
 *    unit = 0 .. cp_nslots-1
 *
 */
struct changer_params {
	int cp_curpicker;  /* current transport element */
	int cp_npickers;   /* number of transport elements      (CHET_MT) */
	int cp_nslots;     /* number of storage elements        (CHET_ST) */
	int cp_nportals;   /* number of import/export elements  (CHET_IE) */
	int cp_ndrives;    /* number of data transfer elements  (CHET_DT) */
};
struct changer_vendor_params {
	int  cvp_n1;       /* number of vendor specific elems   (CHET_V1) */
	char cvp_label1[16];
	int  cvp_n2;       /* number of vendor specific elems   (CHET_V2) */
	char cvp_label2[16];
	int  cvp_n3;       /* number of vendor specific elems   (CHET_V3) */
	char cvp_label3[16];
	int  cvp_n4;       /* number of vendor specific elems   (CHET_V4) */
	char cvp_label4[16];
	int  reserved[8];
};


/*
 * CHIOMOVE
 *    move a medium from one element to another
 */
struct changer_move {
	int cm_fromtype;	/* type/unit of source element */
	int cm_fromunit;	
	int cm_totype;	/* type/unit of destination element */
	int cm_tounit;
	int cm_flags;
};
#define CM_INVERT   1   /* flag: rotate media (for double-sided like MOD) */


/*
 * CHIOEXCHANGE
 *    move one medium from element #1 to element #2,
 *    and another one from element #2 to element #3.
 *    element #1 and #3 are allowed to be identical.
 */
struct changer_exchange {
	int ce_srctype;	    /* type/unit of element #1 */
	int ce_srcunit;
	int ce_fdsttype;    /* type/unit of element #2 */
	int ce_fdstunit;
	int ce_sdsttype;    /* type/unit of element #3 */
	int ce_sdstunit;
	int ce_flags;
};
#define CE_INVERT1   1
#define CE_INVERT2   2


/*
 * CHIOPOSITION
 *    move the transport element (robot arm) to a specific element.
 */
struct changer_position {
	int cp_type;
	int cp_unit;
	int cp_flags;
};
#define CP_INVERT   1


/*
 * CHIOGSTATUS
 *    get element status for all elements of a specific type
 */
struct changer_element_status {
	int             ces_type;
	unsigned char   __user *ces_data;
};
#define CESTATUS_FULL     0x01 /* full */
#define CESTATUS_IMPEXP   0x02	/* media was imported (inserted by sysop) */
#define CESTATUS_EXCEPT   0x04	/* error condition */
#define CESTATUS_ACCESS   0x08	/* access allowed */
#define CESTATUS_EXENAB   0x10	/* element can export media */
#define CESTATUS_INENAB   0x20	/* element can import media */


/*
 * CHIOGELEM
 *    get more detailed status information for a single element
 */
struct changer_get_element {
	int	cge_type;	 /* type/unit */
	int	cge_unit;
	int	cge_status;      /* status */
	int     cge_errno;       /* errno */
	int     cge_srctype;     /* source element of the last move/exchange */
	int     cge_srcunit;
	int     cge_id;          /* scsi id  (for data transfer elements) */
	int     cge_lun;         /* scsi lun (for data transfer elements) */
	char    cge_pvoltag[36]; /* primary volume tag */
	char    cge_avoltag[36]; /* alternate volume tag */
	int     cge_flags;
};
/* flags */
#define CGE_ERRNO     0x01       /* errno available       */
#define CGE_INVERT    0x02       /* media inverted        */
#define CGE_SRC       0x04       /* media src available   */
#define CGE_IDLUN     0x08       /* ID+LUN available      */
#define CGE_PVOLTAG   0x10       /* primary volume tag available */
#define CGE_AVOLTAG   0x20       /* alternate volume tag available */


/*
 * CHIOSVOLTAG
 *    set volume tag
 */
struct changer_set_voltag {
	int	csv_type;	 /* type/unit */
	int	csv_unit;
	char    csv_voltag[36];  /* volume tag */
	int     csv_flags;
};
#define CSV_PVOLTAG   0x01       /* primary volume tag */
#define CSV_AVOLTAG   0x02       /* alternate volume tag */
#define CSV_CLEARTAG  0x04       /* clear volume tag */

/* ioctls */
#define CHIOMOVE       _IOW('c', 1,struct changer_move)
#define CHIOEXCHANGE   _IOW('c', 2,struct changer_exchange)
#define CHIOPOSITION   _IOW('c', 3,struct changer_position)
#define CHIOGPICKER    _IOR('c', 4,int)                        /* not impl. */
#define CHIOSPICKER    _IOW('c', 5,int)                        /* not impl. */
#define CHIOGPARAMS    _IOR('c', 6,struct changer_params)
#define CHIOGSTATUS    _IOW('c', 8,struct changer_element_status)
#define CHIOGELEM      _IOW('c',16,struct changer_get_element)
#define CHIOINITELEM   _IO('c',17)
#define CHIOSVOLTAG    _IOW('c',18,struct changer_set_voltag)
#define CHIOGVPARAMS   _IOR('c',19,struct changer_vendor_params)

/* ---------------------------------------------------------------------- */

/*
 * Local variables:
 * c-basic-offset: 8
 * End:
 */