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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11 * modification, are permitted provided that the following conditions
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19 * must display the following acknowledgement:
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 struct dev_ops *si_bops; /* backing devops vector */
84 int si_iosize_max; /* maximum I/O size (for physio &al) */
85 struct sysref si_sysref;
88 struct tty *__sit_tty;
91 struct disk *__sid_disk;
92 struct mount *__sid_mountpoint;
93 int __sid_bsize_phys; /* min physical block size */
94 int __sid_bsize_best; /* optimal block size */
97 struct bio_track si_track_read;
98 struct bio_track si_track_write;
99 time_t si_lastread; /* time_second */
100 time_t si_lastwrite; /* time_second */
103 #define SI_UNUSED01 0x0001
104 #define SI_HASHED 0x0002 /* in (maj,min) hash table */
105 #define SI_OVERRIDE 0x0004 /* override uid, gid, and perms */
106 #define SI_INTERCEPTED 0x0008 /* device ops was intercepted */
107 #define SI_DEVFS_LINKED 0x0010
108 #define SI_REPROBE_TEST 0x0020
110 #define si_tty __si_u.__si_tty.__sit_tty
111 #define si_disk __si_u.__si_disk.__sid_disk
112 #define si_mountpoint __si_u.__si_disk.__sid_mountpoint
113 #define si_bsize_phys __si_u.__si_disk.__sid_bsize_phys
114 #define si_bsize_best __si_u.__si_disk.__sid_bsize_best
116 #define CDEVSW_ALL_MINORS 0 /* mask of 0 always matches 0 */
119 * Special device management
122 #define SPECHASH(rdev) (((unsigned)(minor(rdev)))%SPECHSZ)
125 * Definitions of device driver entry switches
137 typedef int l_open_t (struct cdev *dev, struct tty *tp);
138 typedef int l_close_t (struct tty *tp, int flag);
139 typedef int l_read_t (struct tty *tp, struct uio *uio, int flag);
140 typedef int l_write_t (struct tty *tp, struct uio *uio, int flag);
141 typedef int l_ioctl_t (struct tty *tp, u_long cmd, caddr_t data, int flag,
143 typedef int l_rint_t (int c, struct tty *tp);
144 typedef int l_start_t (struct tty *tp);
145 typedef int l_modem_t (struct tty *tp, int flag);
148 * Line discipline switch table
163 extern struct linesw linesw[];
166 int ldisc_register (int , struct linesw *);
167 void ldisc_deregister (int);
168 #define LDISC_LOAD -1 /* Loadable line discipline */
175 udev_t sw_dev; /* For quasibogus swapdev reporting */
179 struct cdev *sw_device;
181 #define SW_FREED 0x01
182 #define SW_SEQUENTIAL 0x02
183 #define sw_freed sw_flags /* XXX compat */
187 l_ioctl_t l_nullioctl;
193 struct devsw_module_data {
194 int (*chainevh)(struct module *, int, void *); /* next handler */
195 void *chainarg; /* arg for next event handler */
196 /* Do not initialize fields hereafter */
199 #define DEV_MODULE(name, evh, arg) \
200 static moduledata_t name##_mod = { \
205 DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE)
207 int count_dev (cdev_t dev);
208 void destroy_dev (cdev_t dev);
209 void release_dev (cdev_t dev);
210 cdev_t get_dev (int x, int y);
211 cdev_t reference_dev (cdev_t dev);
212 struct dev_ops *devsw (cdev_t dev);
213 const char *devtoname (cdev_t dev);
214 void freedev (cdev_t dev);
215 int iszerodev (cdev_t dev);
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
233 #define GID_OPERATOR 5
236 #define GID_DIALER 68
239 #endif /* _KERNEL || _KERNEL_STRUCTURES */
241 #endif /* !_SYS_CONF_H_ */