2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 2003 Poul-Henning Kamp
7 * This software was developed for the FreeBSD Project by Poul-Henning Kamp
8 * and NAI Labs, the Security Research Division of Network Associates, Inc.
9 * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
10 * DARPA CHATS research program.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. The names of the authors may not be used to endorse or promote
21 * products derived from this software without specific prior written
24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 #ifndef _GEOM_GEOM_DISK_H_
40 #define _GEOM_GEOM_DISK_H_
42 #define DISK_RR_UNKNOWN 0
43 #define DISK_RR_NON_ROTATING 1
44 #define DISK_RR_MIN 0x0401
45 #define DISK_RR_MAX 0xfffe
49 #include <sys/queue.h>
50 #include <sys/_lock.h>
51 #include <sys/_mutex.h>
54 #define G_DISK_CLASS_NAME "DISK"
58 typedef int disk_open_t(struct disk *);
59 typedef int disk_close_t(struct disk *);
60 typedef void disk_strategy_t(struct bio *bp);
61 typedef int disk_getattr_t(struct bio *bp);
62 typedef void disk_gone_t(struct disk *);
63 typedef int disk_ioctl_t(struct disk *, u_long cmd, void *data,
64 int fflag, struct thread *td);
65 /* NB: disk_ioctl_t SHALL be cast'able to d_ioctl_t */
77 LIST_ENTRY(disk_alias) da_next;
82 /* Fields which are private to geom_disk */
83 struct g_geom *d_geom;
84 struct devstat *d_devstat;
87 disk_init_level d_init_level;
93 struct bio_queue_head *d_queue;
98 disk_close_t *d_close;
99 disk_strategy_t *d_strategy;
100 disk_ioctl_t *d_ioctl;
102 disk_getattr_t *d_getattr;
105 /* Info fields from driver to geom_disk.c. Valid when open */
112 u_int d_stripeoffset;
114 char d_ident[DISK_IDENT_SIZE];
115 char d_descr[DISK_IDENT_SIZE];
116 uint16_t d_hba_vendor;
117 uint16_t d_hba_device;
118 uint16_t d_hba_subvendor;
119 uint16_t d_hba_subdevice;
120 uint16_t d_rotation_rate;
122 /* Fields private to the driver */
125 /* Fields private to geom_disk, to be moved on next version bump */
126 LIST_HEAD(,disk_alias) d_aliases;
129 #define DISKFLAG_RESERVED 0x1 /* Was NEEDSGIANT */
130 #define DISKFLAG_OPEN 0x2
131 #define DISKFLAG_CANDELETE 0x4
132 #define DISKFLAG_CANFLUSHCACHE 0x8
133 #define DISKFLAG_UNMAPPED_BIO 0x10
134 #define DISKFLAG_DIRECT_COMPLETION 0x20
135 #define DISKFLAG_CANZONE 0x80
137 struct disk *disk_alloc(void);
138 void disk_create(struct disk *disk, int version);
139 void disk_destroy(struct disk *disk);
140 void disk_gone(struct disk *disk);
141 void disk_attr_changed(struct disk *dp, const char *attr, int flag);
142 void disk_media_changed(struct disk *dp, int flag);
143 void disk_media_gone(struct disk *dp, int flag);
144 int disk_resize(struct disk *dp, int flag);
145 void disk_add_alias(struct disk *disk, const char *);
147 #define DISK_VERSION_00 0x58561059
148 #define DISK_VERSION_01 0x5856105a
149 #define DISK_VERSION_02 0x5856105b
150 #define DISK_VERSION_03 0x5856105c
151 #define DISK_VERSION_04 0x5856105d
152 #define DISK_VERSION_05 0x5856105e
153 #define DISK_VERSION DISK_VERSION_05
156 #endif /* _GEOM_GEOM_DISK_H_ */