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