Note that Jeff indicated to me that Jonathan Lemon gave his permission to
[dragonfly.git] / sys / sys / disk.h
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984263bc 1/*
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2 * Copyright (c) 2004 Matthew Dillon <dillon@backplane.com>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
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26 * ----------------------------------------------------------------------------
27 * "THE BEER-WARE LICENSE" (Revision 42):
28 * <phk@FreeBSD.ORG> wrote this file. As long as you retain this notice you
29 * can do whatever you want with this stuff. If we meet some day, and you think
30 * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
31 * ----------------------------------------------------------------------------
32 *
33 * $FreeBSD: src/sys/sys/disk.h,v 1.16.2.3 2001/06/20 16:11:01 scottl Exp $
e4c9c0c8 34 * $DragonFly: src/sys/sys/disk.h,v 1.5 2004/05/19 22:53:02 dillon Exp $
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35 */
36
37#ifndef _SYS_DISK_H_
38#define _SYS_DISK_H_
39
40#ifndef _SYS_DISKSLICE_H_
41#include <sys/diskslice.h>
335dda38 42#endif
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43
44#ifndef _SYS_DISKLABEL
45#include <sys/disklabel.h>
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46#endif
47
48#ifndef _SYS_DISKLABEL
49#include <sys/msgport.h>
50#endif
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51
52struct disk {
335dda38 53 struct lwkt_port d_port; /* interception port */
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54 struct cdevsw *d_devsw; /* our device switch */
55 struct cdevsw *d_rawsw; /* the raw device switch */
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56 u_int d_flags;
57 u_int d_dsflags;
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58 dev_t d_rawdev; /* backing raw device */
59 dev_t d_cdev; /* special whole-disk part */
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60 struct diskslices *d_slice;
61 struct disklabel d_label;
62 LIST_ENTRY(disk) d_list;
63};
64
65#define DISKFLAG_LOCK 0x1
66#define DISKFLAG_WANTED 0x2
67
e4c9c0c8 68dev_t disk_create (int unit, struct disk *disk, int flags, struct cdevsw *sw);
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69void disk_destroy (struct disk *disk);
70int disk_dumpcheck (dev_t dev, u_int *count, u_int *blkno, u_int *secsize);
71struct disk *disk_enumerate (struct disk *disk);
72void disk_invalidate (struct disk *disk);
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73
74#endif /* _SYS_DISK_H_ */