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 struct disk { 64 /* Fields which are private to geom_disk */ 65 struct g_geom *d_geom; 66 struct devstat *d_devstat; 67 int d_destroyed; 68 69 /* Shared fields */ 70 u_int d_flags; 71 const char *d_name; 72 u_int d_unit; 73 struct bio_queue_head *d_queue; 74 struct mtx *d_lock; 75 76 /* Disk methods */ 77 disk_open_t *d_open; 78 disk_close_t *d_close; 79 disk_strategy_t *d_strategy; 80 disk_ioctl_t *d_ioctl; 81 dumper_t *d_dump; 82 disk_getattr_t *d_getattr; 83 disk_gone_t *d_gone; 84 85 /* Info fields from driver to geom_disk.c. Valid when open */ 86 u_int d_sectorsize; 87 off_t d_mediasize; 88 u_int d_fwsectors; 89 u_int d_fwheads; 90 u_int d_maxsize; 91 off_t d_delmaxsize; 92 u_int d_stripeoffset; 93 u_int d_stripesize; 94 char d_ident[DISK_IDENT_SIZE]; 95 char d_descr[DISK_IDENT_SIZE]; 96 uint16_t d_hba_vendor; 97 uint16_t d_hba_device; 98 uint16_t d_hba_subvendor; 99 uint16_t d_hba_subdevice; 100 uint16_t d_rotation_rate; 101 102 /* Fields private to the driver */ 103 void *d_drv1; 104 }; 105 106 #define DISKFLAG_RESERVED 0x1 /* Was NEEDSGIANT */ 107 #define DISKFLAG_OPEN 0x2 108 #define DISKFLAG_CANDELETE 0x4 109 #define DISKFLAG_CANFLUSHCACHE 0x8 110 #define DISKFLAG_UNMAPPED_BIO 0x10 111 #define DISKFLAG_DIRECT_COMPLETION 0x20 112 113 struct disk *disk_alloc(void); 114 void disk_create(struct disk *disk, int version); 115 void disk_destroy(struct disk *disk); 116 void disk_gone(struct disk *disk); 117 void disk_attr_changed(struct disk *dp, const char *attr, int flag); 118 void disk_media_changed(struct disk *dp, int flag); 119 void disk_media_gone(struct disk *dp, int flag); 120 int disk_resize(struct disk *dp, int flag); 121 122 #define DISK_VERSION_00 0x58561059 123 #define DISK_VERSION_01 0x5856105a 124 #define DISK_VERSION_02 0x5856105b 125 #define DISK_VERSION_03 0x5856105c 126 #define DISK_VERSION_04 0x5856105d 127 #define DISK_VERSION DISK_VERSION_04 128 129 #endif /* _KERNEL */ 130 #endif /* _GEOM_GEOM_DISK_H_ */ 131