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authorGerd Knorr <kraxel@bytesex.org>2005-05-10 04:59:13 -0400
committerJames Bottomley <jejb@mulgrave.(none)>2005-05-20 13:53:50 -0400
commitdaa6eda65a53e5addf86c6bc829129ff51b08bda (patch)
tree19ecc387d09110aedc9f48927b78079f3f595ace /include/linux
parent5cbf5eaef7e4430f60844748fd33e22a5fb15167 (diff)
[SCSI] add scsi changer driver
This patch adds a device driver for scsi media changer devices. Signed-off-by: Gerd Knorr <kraxel@bytesex.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/chio.h168
-rw-r--r--include/linux/major.h1
2 files changed, 169 insertions, 0 deletions
diff --git a/include/linux/chio.h b/include/linux/chio.h
new file mode 100644
index 000000000000..63035ae67e63
--- /dev/null
+++ b/include/linux/chio.h
@@ -0,0 +1,168 @@
1/*
2 * ioctl interface for the scsi media changer driver
3 */
4
5/* changer element types */
6#define CHET_MT 0 /* media transport element (robot) */
7#define CHET_ST 1 /* storage element (media slots) */
8#define CHET_IE 2 /* import/export element */
9#define CHET_DT 3 /* data transfer element (tape/cdrom/whatever) */
10#define CHET_V1 4 /* vendor specific #1 */
11#define CHET_V2 5 /* vendor specific #2 */
12#define CHET_V3 6 /* vendor specific #3 */
13#define CHET_V4 7 /* vendor specific #4 */
14
15
16/*
17 * CHIOGPARAMS
18 * query changer properties
19 *
20 * CHIOVGPARAMS
21 * query vendor-specific element types
22 *
23 * accessing elements works by specifing type and unit of the element.
24 * for eample, storage elements are addressed with type = CHET_ST and
25 * unit = 0 .. cp_nslots-1
26 *
27 */
28struct changer_params {
29 int cp_curpicker; /* current transport element */
30 int cp_npickers; /* number of transport elements (CHET_MT) */
31 int cp_nslots; /* number of storage elements (CHET_ST) */
32 int cp_nportals; /* number of import/export elements (CHET_IE) */
33 int cp_ndrives; /* number of data transfer elements (CHET_DT) */
34};
35struct changer_vendor_params {
36 int cvp_n1; /* number of vendor specific elems (CHET_V1) */
37 char cvp_label1[16];
38 int cvp_n2; /* number of vendor specific elems (CHET_V2) */
39 char cvp_label2[16];
40 int cvp_n3; /* number of vendor specific elems (CHET_V3) */
41 char cvp_label3[16];
42 int cvp_n4; /* number of vendor specific elems (CHET_V4) */
43 char cvp_label4[16];
44 int reserved[8];
45};
46
47
48/*
49 * CHIOMOVE
50 * move a medium from one element to another
51 */
52struct changer_move {
53 int cm_fromtype; /* type/unit of source element */
54 int cm_fromunit;
55 int cm_totype; /* type/unit of destination element */
56 int cm_tounit;
57 int cm_flags;
58};
59#define CM_INVERT 1 /* flag: rotate media (for double-sided like MOD) */
60
61
62/*
63 * CHIOEXCHANGE
64 * move one medium from element #1 to element #2,
65 * and another one from element #2 to element #3.
66 * element #1 and #3 are allowed to be identical.
67 */
68struct changer_exchange {
69 int ce_srctype; /* type/unit of element #1 */
70 int ce_srcunit;
71 int ce_fdsttype; /* type/unit of element #2 */
72 int ce_fdstunit;
73 int ce_sdsttype; /* type/unit of element #3 */
74 int ce_sdstunit;
75 int ce_flags;
76};
77#define CE_INVERT1 1
78#define CE_INVERT2 2
79
80
81/*
82 * CHIOPOSITION
83 * move the transport element (robot arm) to a specific element.
84 */
85struct changer_position {
86 int cp_type;
87 int cp_unit;
88 int cp_flags;
89};
90#define CP_INVERT 1
91
92
93/*
94 * CHIOGSTATUS
95 * get element status for all elements of a specific type
96 */
97struct changer_element_status {
98 int ces_type;
99 unsigned char *ces_data;
100};
101#define CESTATUS_FULL 0x01 /* full */
102#define CESTATUS_IMPEXP 0x02 /* media was imported (inserted by sysop) */
103#define CESTATUS_EXCEPT 0x04 /* error condition */
104#define CESTATUS_ACCESS 0x08 /* access allowed */
105#define CESTATUS_EXENAB 0x10 /* element can export media */
106#define CESTATUS_INENAB 0x20 /* element can import media */
107
108
109/*
110 * CHIOGELEM
111 * get more detailed status informtion for a single element
112 */
113struct changer_get_element {
114 int cge_type; /* type/unit */
115 int cge_unit;
116 int cge_status; /* status */
117 int cge_errno; /* errno */
118 int cge_srctype; /* source element of the last move/exchange */
119 int cge_srcunit;
120 int cge_id; /* scsi id (for data transfer elements) */
121 int cge_lun; /* scsi lun (for data transfer elements) */
122 char cge_pvoltag[36]; /* primary volume tag */
123 char cge_avoltag[36]; /* alternate volume tag */
124 int cge_flags;
125};
126/* flags */
127#define CGE_ERRNO 0x01 /* errno available */
128#define CGE_INVERT 0x02 /* media inverted */
129#define CGE_SRC 0x04 /* media src available */
130#define CGE_IDLUN 0x08 /* ID+LUN available */
131#define CGE_PVOLTAG 0x10 /* primary volume tag available */
132#define CGE_AVOLTAG 0x20 /* alternate volume tag available */
133
134
135/*
136 * CHIOSVOLTAG
137 * set volume tag
138 */
139struct changer_set_voltag {
140 int csv_type; /* type/unit */
141 int csv_unit;
142 char csv_voltag[36]; /* volume tag */
143 int csv_flags;
144};
145#define CSV_PVOLTAG 0x01 /* primary volume tag */
146#define CSV_AVOLTAG 0x02 /* alternate volume tag */
147#define CSV_CLEARTAG 0x04 /* clear volume tag */
148
149/* ioctls */
150#define CHIOMOVE _IOW('c', 1,struct changer_move)
151#define CHIOEXCHANGE _IOW('c', 2,struct changer_exchange)
152#define CHIOPOSITION _IOW('c', 3,struct changer_position)
153#define CHIOGPICKER _IOR('c', 4,int) /* not impl. */
154#define CHIOSPICKER _IOW('c', 5,int) /* not impl. */
155#define CHIOGPARAMS _IOR('c', 6,struct changer_params)
156#define CHIOGSTATUS _IOW('c', 8,struct changer_element_status)
157#define CHIOGELEM _IOW('c',16,struct changer_get_element)
158#define CHIOINITELEM _IO('c',17)
159#define CHIOSVOLTAG _IOW('c',18,struct changer_set_voltag)
160#define CHIOGVPARAMS _IOR('c',19,struct changer_vendor_params)
161
162/* ---------------------------------------------------------------------- */
163
164/*
165 * Local variables:
166 * c-basic-offset: 8
167 * End:
168 */
diff --git a/include/linux/major.h b/include/linux/major.h
index 4b62c42b842c..e36a46702d94 100644
--- a/include/linux/major.h
+++ b/include/linux/major.h
@@ -100,6 +100,7 @@
100#define I2O_MAJOR 80 /* 80->87 */ 100#define I2O_MAJOR 80 /* 80->87 */
101 101
102#define SHMIQ_MAJOR 85 /* Linux/mips, SGI /dev/shmiq */ 102#define SHMIQ_MAJOR 85 /* Linux/mips, SGI /dev/shmiq */
103#define SCSI_CHANGER_MAJOR 86
103 104
104#define IDE6_MAJOR 88 105#define IDE6_MAJOR 88
105#define IDE7_MAJOR 89 106#define IDE7_MAJOR 89
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-22 11:30:05 -0500