2 * Copyright (c) 2003,2004 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@backplane.com>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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
15 * the documentation and/or other materials provided with the
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * ----------------------------------------------------------------------------
35 * "THE BEER-WARE LICENSE" (Revision 42):
36 * <phk@FreeBSD.ORG> wrote this file. As long as you retain this notice you
37 * can do whatever you want with this stuff. If we meet some day, and you think
38 * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
39 * ----------------------------------------------------------------------------
41 * $FreeBSD: src/sys/sys/disk.h,v 1.16.2.3 2001/06/20 16:11:01 scottl Exp $
42 * $DragonFly: src/sys/sys/disk.h,v 1.18 2007/07/30 08:02:40 dillon Exp $
48 #if !defined(_KERNEL) && !defined(_KERNEL_STRUCTURES)
49 #error "This file should not be included by userland programs."
52 #ifndef _SYS_DISKSLICE_H_
53 #include <sys/diskslice.h>
56 #include <sys/queue.h>
58 #ifndef _SYS_MSGPORT_H_
59 #include <sys/msgport.h>
66 * Media information structure - filled in by the media driver.
68 * NOTE: d_serialno is copied on the call to setdiskinfo and need
69 * not be valid after that.
73 * These fields are required. Most drivers will load a disk_info
74 * structure in the device open function with the media parameters
75 * and call disk_setdiskinfo().
77 * Note that only one of d_media_size or d_media_blocks should be
80 * d_media_size media size in bytes
81 * d_media_blocks media size in blocks (e.g. total sectors)
82 * d_media_blksize media block size / sector size
83 * d_dsflags disklabel management flags
85 u_int64_t d_media_size
;
86 u_int64_t d_media_blocks
;
91 * Optional fields, leave 0 if not known
93 u_int d_type
; /* DTYPE_xxx */
103 * d_dsflags, also used for dsopen() - control disklabel processing
105 * COMPATPARTA - used by scsi devices to allow CDs to boot from cd0a.
106 * cd's don't have disklabels and the default compat label
107 * does not implement an 'a' partition.
109 * COMPATMBR - used by the vn device to request that one sector be
110 * reserved as if an MBR were present even when one isn't.
112 * MBRQUIET - silently ignore MBR probe if unable to read sector 0.
115 * DEVICEMAPPER - used by the device mapper (dm). Adds a '.' between the
116 * device name and the slice/part stuff (i.e. foo.s0).
118 * RAWPSIZE - use the dev_psize of the underlying raw device if the top
121 #define DSO_NOLABELS 0x0001
122 #define DSO_ONESLICE 0x0002
123 #define DSO_COMPATLABEL 0x0004
124 #define DSO_COMPATPARTA 0x0008
125 #define DSO_COMPATMBR 0x0010
126 #define DSO_RAWEXTENSIONS 0x0020
127 #define DSO_MBRQUIET 0x0040
128 #define DSO_DEVICEMAPPER 0x0080
129 #define DSO_RAWPSIZE 0x0100
131 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
134 * Disk management structure - automated disklabel support.
137 struct dev_ops
*d_dev_ops
; /* our device switch */
138 struct dev_ops
*d_raw_ops
; /* the raw device switch */
140 int d_opencount
; /* The current open count */
141 cdev_t d_rawdev
; /* backing raw device */
142 cdev_t d_cdev
; /* special whole-disk part */
143 struct diskslices
*d_slice
;
144 struct disk_info d_info
; /* info structure for media */
148 const char *d_disktype
; /* Disk type information */
149 LIST_ENTRY(disk
) d_list
;
150 kdmsg_iocom_t d_iocom
; /* cluster import/export */
151 int d_refs
; /* interlock destruction */
159 #define DISKFLAG_LOCK 0x0001
160 #define DISKFLAG_WANTED 0x0002
161 #define DISKFLAG_MARKER 0x0004
164 cdev_t
disk_create (int unit
, struct disk
*disk
, struct dev_ops
*raw_ops
);
165 cdev_t
disk_create_clone (int unit
, struct disk
*disk
, struct dev_ops
*raw_ops
);
166 cdev_t
disk_create_named(const char *name
, int unit
, struct disk
*dp
, struct dev_ops
*raw_ops
);
167 cdev_t
disk_create_named_clone(const char *name
, int unit
, struct disk
*dp
, struct dev_ops
*raw_ops
);
168 cdev_t
disk_locate (const char *devname
);
169 void disk_destroy (struct disk
*disk
);
170 void disk_setdiskinfo (struct disk
*disk
, struct disk_info
*info
);
171 int disk_setdisktype(struct disk
*disk
, const char *type
);
172 int disk_getopencount(struct disk
*disk
);
173 void disk_setdiskinfo_sync(struct disk
*disk
, struct disk_info
*info
);
174 int disk_dumpcheck (cdev_t dev
, u_int64_t
*count
, u_int64_t
*blkno
, u_int
*secsize
);
175 int disk_dumpconf(cdev_t dev
, u_int onoff
);
176 struct disk
*disk_enumerate (struct disk
*marker
, struct disk
*dp
);
177 void disk_enumerate_stop (struct disk
*marker
, struct disk
*dp
);
178 void disk_invalidate (struct disk
*disk
);
179 void disk_unprobe(struct disk
*disk
);
181 void disk_msg_send(uint32_t cmd
, void *load
, void *load2
);
182 void disk_msg_send_sync(uint32_t cmd
, void *load
, void *load2
);
183 void disk_config(void *);
185 int bounds_check_with_mediasize(struct bio
*bio
, int secsize
, uint64_t mediasize
);
187 void disk_iocom_init(struct disk
*dp
);
188 void disk_iocom_update(struct disk
*dp
);
189 void disk_iocom_uninit(struct disk
*dp
);
190 int disk_iocom_ioctl(struct disk
*dp
, int cmd
, void *data
);
191 void disk_clusterctl_wakeup(kdmsg_iocom_t
*iocom
);
193 typedef struct disk_msg
{
199 #define DISK_DISK_PROBE 0x01
200 #define DISK_DISK_DESTROY 0x02
201 #define DISK_SLICE_REPROBE 0x03
202 #define DISK_DISK_REPROBE 0x04
203 #define DISK_UNPROBE 0x05
204 #define DISK_SYNC 0x99
209 #endif /* _SYS_DISK_H_ */