FreeBSD/Linux Kernel Cross Reference
sys/geom/geom_disk.h
1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 2003 Poul-Henning Kamp
5 * All rights reserved.
6 *
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.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
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
22 * permission.
23 *
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
34 * SUCH DAMAGE.
35 *
36 * $FreeBSD: releng/12.0/sys/geom/geom_disk.h 327996 2018-01-15 11:20:00Z avg $
37 */
38
39 #ifndef _GEOM_GEOM_DISK_H_
40 #define _GEOM_GEOM_DISK_H_
41
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
46
47 #ifdef _KERNEL
48
49 #include <sys/queue.h>
50 #include <sys/_lock.h>
51 #include <sys/_mutex.h>
52 #include <sys/disk.h>
53
54 #define G_DISK_CLASS_NAME "DISK"
55
56 struct disk;
57
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 */
66
67 struct g_geom;
68 struct devstat;
69
70 typedef enum {
71 DISK_INIT_NONE,
72 DISK_INIT_START,
73 DISK_INIT_DONE
74 } disk_init_level;
75
76 struct disk_alias {
77 LIST_ENTRY(disk_alias) da_next;
78 const char *da_alias;
79 };
80
81 struct disk {
82 /* Fields which are private to geom_disk */
83 struct g_geom *d_geom;
84 struct devstat *d_devstat;
85 int d_goneflag;
86 int d_destroyed;
87 disk_init_level d_init_level;
88
89 /* Shared fields */
90 u_int d_flags;
91 const char *d_name;
92 u_int d_unit;
93 struct bio_queue_head *d_queue;
94 struct mtx *d_lock;
95
96 /* Disk methods */
97 disk_open_t *d_open;
98 disk_close_t *d_close;
99 disk_strategy_t *d_strategy;
100 disk_ioctl_t *d_ioctl;
101 dumper_t *d_dump;
102 disk_getattr_t *d_getattr;
103 disk_gone_t *d_gone;
104
105 /* Info fields from driver to geom_disk.c. Valid when open */
106 u_int d_sectorsize;
107 off_t d_mediasize;
108 u_int d_fwsectors;
109 u_int d_fwheads;
110 u_int d_maxsize;
111 off_t d_delmaxsize;
112 u_int d_stripeoffset;
113 u_int d_stripesize;
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;
121
122 /* Fields private to the driver */
123 void *d_drv1;
124
125 /* Fields private to geom_disk, to be moved on next version bump */
126 LIST_HEAD(,disk_alias) d_aliases;
127 };
128
129 #define DISKFLAG_RESERVED 0x0001 /* Was NEEDSGIANT */
130 #define DISKFLAG_OPEN 0x0002
131 #define DISKFLAG_CANDELETE 0x0004
132 #define DISKFLAG_CANFLUSHCACHE 0x0008
133 #define DISKFLAG_UNMAPPED_BIO 0x0010
134 #define DISKFLAG_DIRECT_COMPLETION 0x0020
135 #define DISKFLAG_CANZONE 0x0080
136 #define DISKFLAG_WRITE_PROTECT 0x0100
137
138 struct disk *disk_alloc(void);
139 void disk_create(struct disk *disk, int version);
140 void disk_destroy(struct disk *disk);
141 void disk_gone(struct disk *disk);
142 void disk_attr_changed(struct disk *dp, const char *attr, int flag);
143 void disk_media_changed(struct disk *dp, int flag);
144 void disk_media_gone(struct disk *dp, int flag);
145 int disk_resize(struct disk *dp, int flag);
146 void disk_add_alias(struct disk *disk, const char *);
147
148 #define DISK_VERSION_00 0x58561059
149 #define DISK_VERSION_01 0x5856105a
150 #define DISK_VERSION_02 0x5856105b
151 #define DISK_VERSION_03 0x5856105c
152 #define DISK_VERSION_04 0x5856105d
153 #define DISK_VERSION_05 0x5856105e
154 #define DISK_VERSION DISK_VERSION_05
155
156 #endif /* _KERNEL */
157 #endif /* _GEOM_GEOM_DISK_H_ */
Cache object: 1aa1bf3ee49cef06810e02cf6927806b
|