2 * Copyright (c) 1990, 1993
3 * The Regents of the University of California. All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
6 * to the University of California by American Telephone and Telegraph
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8 * the permission of UNIX System Laboratories, Inc.
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20 * This product includes software developed by the University of
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38 * @(#)conf.h 8.5 (Berkeley) 1/9/95
39 * $FreeBSD: src/sys/sys/conf.h,v 1.103.2.6 2002/03/11 01:14:55 dd Exp $
40 * $DragonFly: src/sys/sys/conf.h,v 1.18 2007/05/09 00:53:35 dillon Exp $
46 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
49 #include <sys/queue.h>
54 #ifndef _SYS_BIOTRACK_H_
55 #include <sys/biotrack.h>
57 #ifndef _SYS_SYSREF_H_
58 #include <sys/sysref.h>
61 #define SPECNAMELEN 15
74 TAILQ_ENTRY(cdev) link;
77 LIST_ENTRY(cdev) si_hash;
78 SLIST_HEAD(, vnode) si_hlist;
79 char si_name[SPECNAMELEN + 1];
82 struct dev_ops *si_ops; /* device operations vector */
83 int si_iosize_max; /* maximum I/O size (for physio &al) */
84 struct sysref si_sysref;
87 struct tty *__sit_tty;
90 struct disk *__sid_disk;
91 struct mount *__sid_mountpoint;
92 int __sid_bsize_phys; /* min physical block size */
93 int __sid_bsize_best; /* optimal block size */
96 struct bio_track si_track_read;
97 struct bio_track si_track_write;
98 time_t si_lastread; /* time_second */
99 time_t si_lastwrite; /* time_second */
102 #define SI_UNUSED01 0x0001
103 #define SI_HASHED 0x0002 /* in (maj,min) hash table */
104 #define SI_ADHOC 0x0004 /* created via make_adhoc_dev() or udev2dev() */
105 #define SI_INTERCEPTED 0x0008 /* device ops was intercepted */
106 #define SI_DEVFS_LINKED 0x0010
107 #define SI_REPROBE_TEST 0x0020
109 #define si_tty __si_u.__si_tty.__sit_tty
110 #define si_disk __si_u.__si_disk.__sid_disk
111 #define si_mountpoint __si_u.__si_disk.__sid_mountpoint
112 #define si_bsize_phys __si_u.__si_disk.__sid_bsize_phys
113 #define si_bsize_best __si_u.__si_disk.__sid_bsize_best
115 #define CDEVSW_ALL_MINORS 0 /* mask of 0 always matches 0 */
118 * Special device management
121 #define SPECHASH(rdev) (((unsigned)(minor(rdev)))%SPECHSZ)
124 * Definitions of device driver entry switches
136 typedef int l_open_t (struct cdev *dev, struct tty *tp);
137 typedef int l_close_t (struct tty *tp, int flag);
138 typedef int l_read_t (struct tty *tp, struct uio *uio, int flag);
139 typedef int l_write_t (struct tty *tp, struct uio *uio, int flag);
140 typedef int l_ioctl_t (struct tty *tp, u_long cmd, caddr_t data, int flag,
142 typedef int l_rint_t (int c, struct tty *tp);
143 typedef int l_start_t (struct tty *tp);
144 typedef int l_modem_t (struct tty *tp, int flag);
147 * Line discipline switch table
162 extern struct linesw linesw[];
165 int ldisc_register (int , struct linesw *);
166 void ldisc_deregister (int);
167 #define LDISC_LOAD -1 /* Loadable line discipline */
174 udev_t sw_dev; /* For quasibogus swapdev reporting */
178 struct cdev *sw_device;
180 #define SW_FREED 0x01
181 #define SW_SEQUENTIAL 0x02
182 #define sw_freed sw_flags /* XXX compat */
186 l_ioctl_t l_nullioctl;
192 struct devsw_module_data {
193 int (*chainevh)(struct module *, int, void *); /* next handler */
194 void *chainarg; /* arg for next event handler */
195 /* Do not initialize fields hereafter */
198 #define DEV_MODULE(name, evh, arg) \
199 static moduledata_t name##_mod = { \
204 DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE)
206 int count_dev (cdev_t dev);
207 void destroy_dev (cdev_t dev);
208 void release_dev (cdev_t dev);
209 cdev_t get_dev (int x, int y);
210 cdev_t reference_dev (cdev_t dev);
211 struct dev_ops *devsw (cdev_t dev);
212 const char *devtoname (cdev_t dev);
213 void freedev (cdev_t dev);
214 int iszerodev (cdev_t dev);
216 cdev_t make_sub_dev (cdev_t dev, int minor);
217 int lminor (cdev_t dev);
219 cdev_t kgetdiskbyname(const char *name);
220 int dev_is_good(cdev_t dev);
223 * XXX: This included for when DEVFS resurfaces
232 #define GID_OPERATOR 5
235 #define GID_DIALER 68
238 #endif /* _KERNEL || _KERNEL_STRUCTURES */
240 #endif /* !_SYS_CONF_H_ */