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 46 typedef int disk_open_t(struct disk *); 47 typedef int disk_close_t(struct disk *); 48 typedef void disk_strategy_t(struct bio *bp); 49 typedef int disk_ioctl_t(struct disk *, u_long cmd, void *data, 50 int fflag, struct thread *td); 51 /* NB: disk_ioctl_t SHALL be cast'able to d_ioctl_t */ 52 53 struct g_geom; 54 struct devstat; 55 56 struct disk { 57 /* Fields which are private to geom_disk */ 58 struct g_geom *d_geom; 59 struct devstat *d_devstat; 60 61 /* Shared fields */ 62 u_int d_flags; 63 const char *d_name; 64 u_int d_unit; 65 struct bio_queue_head *d_queue; 66 struct mtx *d_lock; 67 68 /* Disk methods */ 69 disk_open_t *d_open; 70 disk_close_t *d_close; 71 disk_strategy_t *d_strategy; 72 disk_ioctl_t *d_ioctl; 73 dumper_t *d_dump; 74 75 /* Info fields from driver to geom_disk.c. Valid when open */ 76 u_int d_sectorsize; 77 off_t d_mediasize; 78 u_int d_fwsectors; 79 u_int d_fwheads; 80 u_int d_maxsize; 81 u_int d_stripeoffset; 82 u_int d_stripesize; 83 84 /* Fields private to the driver */ 85 void *d_drv1; 86 }; 87 88 #define DISKFLAG_NOGIANT 0x1 89 #define DISKFLAG_OPEN 0x2 90 #define DISKFLAG_CANDELETE 0x4 91 92 void disk_create(int unit, struct disk *disk, int flags, void *unused, void *unused2); 93 void disk_destroy(struct disk *disk); 94 95 96 #endif /* _KERNEL */ 97 #endif /* _GEOM_GEOM_DISK_H_ */ 98