blob: 7fa7b88963e3f7553913c0c9af341135b888723f (
plain)
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
|
/*
* Mach Operating System
* Copyright (c) 1991,1990 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
/*
* File: rz.h
* Author: Alessandro Forin, Carnegie Mellon University
* Date: 9/90
*
* Mapping between U*x-like indexing and controller+slave
* Each controller handles at most 8 slaves, few controllers.
*/
#if 0
#define rzcontroller(dev) (((dev)>>6)&0x3)
#define rzslave(dev) (((dev)>>3)&0x7)
#endif 0
#define rzcontroller(dev) (((dev)>>13)&0x3)
#define rzslave(dev) (((dev)>>10)&0x7)
#if 0
#define rzpartition(dev) ((PARTITION_TYPE(dev)==0xf)?MAXPARTITIONS:((dev)&0x7))
#endif 0
#define rzpartition(dev) ((dev)&0x3ff)
/* To address the full 256 luns use upper bits 8..12 */
/* NOTE: Under U*x this means the next major up.. what a mess */
#define rzlun(dev) (((dev)&0x7) | (((dev)>>5)&0xf8))
/* note: whatever this was used for is no longer cared about -- Kevin */
#define PARTITION_TYPE(dev) (((dev)>>24)&0xf)
#define PARTITION_ABSOLUTE (0xf<<24)
#ifdef MACH_KERNEL
#else /*MACH_KERNEL*/
#define tape_unit(dev) ((((dev)&0xe0)>>3)|((dev)&0x3))
#define TAPE_UNIT(dev) ((dev)&(~0xff))|(tape_unit((dev))<<3)
#define TAPE_REWINDS(dev) (((dev)&0x1c)==0)||(((dev)&0x1c)==8)
#endif /*MACH_KERNEL*/
|
