1 /*- 2 * Copyright (c) 2003 Poul-Henning Kamp 3 * All rights reserved. 4 * 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. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 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 20 * permission. 21 * 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 32 * SUCH DAMAGE. 33 * 34 * $FreeBSD$ 35 */ 36 37 #ifndef _GEOM_GEOM_DISK_H_ 38 #define _GEOM_GEOM_DISK_H_ 39 40 #ifdef _KERNEL 41 42 #include <sys/queue.h> 43 #include <sys/_lock.h> 44 #include <sys/_mutex.h> 45 #include <sys/disk.h> 46 47 #define G_DISK_CLASS_NAME "DISK" 48 49 struct disk; 50 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 */ 59 60 struct g_geom; 61 struct devstat; 62 63 typedef enum { 64 DISK_INIT_NONE, 65 DISK_INIT_START, 66 DISK_INIT_DONE 67 } disk_init_level; 68 69 struct disk_alias { 70 LIST_ENTRY(disk_alias) da_next; 71 const char *da_alias; 72 }; 73 74 struct disk { 75 /* Fields which are private to geom_disk */ 76 struct g_geom *d_geom; 77 struct devstat *d_devstat; 78 int d_goneflag; 79 int d_destroyed; 80 disk_init_level d_init_level; 81 82 /* Shared fields */ 83 u_int d_flags; 84 const char *d_name; 85 u_int d_unit; 86 struct bio_queue_head *d_queue; 87 struct mtx *d_lock; 88 89 /* Disk methods */ 90 disk_open_t *d_open; 91 disk_close_t *d_close; 92 disk_strategy_t *d_strategy; 93 disk_ioctl_t *d_ioctl; 94 dumper_t *d_dump; 95 disk_getattr_t *d_getattr; 96 disk_gone_t *d_gone; 97 98 /* Info fields from driver to geom_disk.c. Valid when open */ 99 u_int d_sectorsize; 100 off_t d_mediasize; 101 u_int d_fwsectors; 102 u_int d_fwheads; 103 u_int d_maxsize; 104 off_t d_delmaxsize; 105 u_int d_stripeoffset; 106 u_int d_stripesize; 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; 114 115 /* Fields private to the driver */ 116 void *d_drv1; 117 118 /* Fields private to geom_disk, to be moved on next version bump */ 119 LIST_HEAD(,disk_alias) d_aliases; 120 }; 121 122 #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 129 130 #define DISK_RR_UNKNOWN 0 131 #define DISK_RR_NON_ROTATING 1 132 #define DISK_RR_MIN 0x0401 133 #define DISK_RR_MAX 0xfffe 134 135 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 *); 144 145 #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_05 152 153 #endif /* _KERNEL */ 154 #endif /* _GEOM_GEOM_DISK_H_ */ 155