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
|
/*
* Contributed by HD Associates (hd@world.std.com).
* Copyright (c) 1992, 1993 HD Associates
*
* Berkeley style copyright. I've just snarfed it out of stdio.h:
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)stdio.h 5.17 (Berkeley) 6/3/91
* $Id$
*/
/* generic SCSI header file. We use the same minor number format
* as on SGI except that the flag bits aren't available because they
* are used as the board index.
*
* The minor number format is:
* FF UUU III (FFUU UIII)
*
* Where:
* FF is the board index
* UUU are the LUN
* III is the SCSI ID (controller)
*/
#ifndef _SCSI_GENERIC_H_
#define _SCSI_GENERIC_H_
#define G_SCSI_FLAG(DEV) (((DEV) & 0xC0) >> 6)
#define G_SCSI_UNIT(DEV) G_SCSI_FLAG(DEV)
#define G_SCSI_LUN(DEV) (((DEV) & 0x38) >> 3)
#define G_SCSI_ID(DEV) ((DEV) & 0x7)
#define G_SCSI_MINOR(FLAG, LUN, ID) \
(((FLAG) << 6) | ((LUN) << 3) | (ID))
#endif /* _SCSI_GENERIC_H_ */
|
