Annotation of sys/sys/chio.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: chio.h,v 1.7 2006/05/31 03:01:44 beck Exp $ */
2: /* $NetBSD: chio.h,v 1.8 1996/04/03 00:25:21 thorpej Exp $ */
3:
4: /*
5: * Copyright (c) 1996 Jason R. Thorpe <thorpej@and.com>
6: * All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgements:
18: * This product includes software developed by Jason R. Thorpe
19: * for And Communications, http://www.and.com/
20: * 4. The name of the author may not be used to endorse or promote products
21: * derived from this software without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
24: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
27: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
28: * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
29: * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
30: * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
31: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33: * SUCH DAMAGE.
34: */
35:
36: #ifndef _SYS_CHIO_H_
37: #define _SYS_CHIO_H_
38:
39: /*
40: * Element types. Used as "to" and "from" type indicators in move
41: * and exchange operations.
42: *
43: * Note that code in sys/scsi/ch.c relies on these values (uses them
44: * as offsets in an array, and other evil), so don't muck with them
45: * unless you know what you're doing.
46: */
47: #define CHET_MT 0 /* medium transport (picker) */
48: #define CHET_ST 1 /* storage transport (slot) */
49: #define CHET_IE 2 /* import/export (portal) */
50: #define CHET_DT 3 /* data transfer (drive) */
51:
52: /*
53: * Maximum length of a volume identification string
54: */
55: #define CH_VOLTAG_MAXLEN 32
56:
57: /*
58: * Structure used to execute a MOVE MEDIUM command.
59: */
60: struct changer_move {
61: int cm_fromtype; /* element type to move from */
62: int cm_fromunit; /* logical unit of from element */
63: int cm_totype; /* element type to move to */
64: int cm_tounit; /* logical unit of to element */
65: int cm_flags; /* misc. flags */
66: };
67:
68: /* cm_flags */
69: #define CM_INVERT 0x01 /* invert media */
70:
71: /*
72: * Structure used to execute an EXCHANGE MEDIUM command. In an
73: * exchange operation, the following steps occur:
74: *
75: * - media from source is moved to first destination.
76: *
77: * - media previously occupying first destination is moved
78: * to the second destination.
79: *
80: * The second destination may or may not be the same as the source.
81: * In the case of a simple exchange, the source and second destination
82: * are the same.
83: */
84: struct changer_exchange {
85: int ce_srctype; /* element type of source */
86: int ce_srcunit; /* logical unit of source */
87: int ce_fdsttype; /* element type of first destination */
88: int ce_fdstunit; /* logical unit of first destination */
89: int ce_sdsttype; /* element type of second destination */
90: int ce_sdstunit; /* logical unit of second destination */
91: int ce_flags; /* misc. flags */
92: };
93:
94: /* ce_flags */
95: #define CE_INVERT1 0x01 /* invert media 1 */
96: #define CE_INVERT2 0x02 /* invert media 2 */
97:
98: /*
99: * Structure used to execute a POSITION TO ELEMENT command. This
100: * moves the current picker in front of the specified element.
101: */
102: struct changer_position {
103: int cp_type; /* element type */
104: int cp_unit; /* logical unit of element */
105: int cp_flags; /* misc. flags */
106: };
107:
108: /* cp_flags */
109: #define CP_INVERT 0x01 /* invert picker */
110:
111: /*
112: * Data returned by CHIOGPARAMS.
113: */
114: struct changer_params {
115: int cp_curpicker; /* current picker */
116: int cp_npickers; /* number of pickers */
117: int cp_nslots; /* number of slots */
118: int cp_nportals; /* number of import/export portals */
119: int cp_ndrives; /* number of drives */
120: };
121:
122: struct changer_voltag {
123: u_char cv_volid[CH_VOLTAG_MAXLEN + 1];
124: u_int16_t cv_serial;
125: };
126:
127: struct changer_element_status {
128: int ces_type; /* element type */
129: u_int8_t ces_flags; /* flags */
130: struct changer_voltag ces_pvoltag; /* primary voltag */
131: struct changer_voltag ces_avoltag; /* alternate voltag */
132: };
133:
134: /*
135: * Command used to get element status.
136: */
137: struct changer_element_status_request {
138: int cesr_type; /* element type */
139: int cesr_flags;
140: #define CESR_VOLTAGS 0x01
141:
142: struct changer_element_status *cesr_data; /* pre-allocated data storage */
143: };
144:
145: /*
146: * Data returned by CHIOGSTATUS is an array of flags bytes.
147: * Not all flags have meaning for all element types.
148: */
149: #define CESTATUS_FULL 0x01 /* element is full */
150: #define CESTATUS_IMPEXP 0x02 /* media deposited by operator */
151: #define CESTATUS_EXCEPT 0x04 /* element in abnormal state */
152: #define CESTATUS_ACCESS 0x08 /* media accessible by picker */
153: #define CESTATUS_EXENAB 0x10 /* element supports exporting */
154: #define CESTATUS_INENAB 0x20 /* element supports importing */
155:
156: #define CESTATUS_PICKER_MASK 0x05 /* flags valid for pickers */
157: #define CESTATUS_SLOT_MASK 0x0c /* flags valid for slots */
158: #define CESTATUS_PORTAL_MASK 0x3f /* flags valid for portals */
159: #define CESTATUS_DRIVE_MASK 0x0c /* flags valid for drives */
160:
161: #define CESTATUS_BITS \
162: "\20\6INEAB\5EXENAB\4ACCESS\3EXCEPT\2IMPEXP\1FULL"
163:
164: /*
165: * XXX we have to renumber this since it chashes w/ the
166: * cdio ioctls, O* interface goes away right after 3.3
167: */
168: #define CHIOMOVE _IOW('c', 0x41, struct changer_move)
169: #define CHIOEXCHANGE _IOW('c', 0x42, struct changer_exchange)
170: #define CHIOPOSITION _IOW('c', 0x43, struct changer_position)
171: #define CHIOGPICKER _IOR('c', 0x44, int)
172: #define CHIOSPICKER _IOW('c', 0x45, int)
173: #define CHIOGPARAMS _IOR('c', 0x46, struct changer_params)
174: #define CHIOGSTATUS _IOW('c', 0x48, struct changer_element_status_request)
175:
176: #endif /* _SYS_CHIO_H_ */
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