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1c79356b 1/*
5d5c5d0d
A
2 * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
3 *
2d21ac55 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b 5 *
2d21ac55
A
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
8f6c56a5 14 *
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15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
2d21ac55
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22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
8f6c56a5 25 *
2d21ac55 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
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27 */
28/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
29/*-
30 * Copyright (c) 1990, 1993
31 * The Regents of the University of California. All rights reserved.
32 * (c) UNIX System Laboratories, Inc.
33 * All or some portions of this file are derived from material licensed
34 * to the University of California by American Telephone and Telegraph
35 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
36 * the permission of UNIX System Laboratories, Inc.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 * 1. Redistributions of source code must retain the above copyright
42 * notice, this list of conditions and the following disclaimer.
43 * 2. Redistributions in binary form must reproduce the above copyright
44 * notice, this list of conditions and the following disclaimer in the
45 * documentation and/or other materials provided with the distribution.
46 * 3. All advertising materials mentioning features or use of this software
47 * must display the following acknowledgement:
48 * This product includes software developed by the University of
49 * California, Berkeley and its contributors.
50 * 4. Neither the name of the University nor the names of its contributors
51 * may be used to endorse or promote products derived from this software
52 * without specific prior written permission.
53 *
54 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
57 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
64 * SUCH DAMAGE.
65 *
66 * @(#)conf.h 8.5 (Berkeley) 1/9/95
67 */
68
69#ifndef _SYS_CONF_H_
70#define _SYS_CONF_H_ 1
71
9bccf70c 72#include <sys/appleapiopts.h>
55e303ae 73#include <sys/cdefs.h>
9bccf70c 74
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75/*
76 * Definitions of device driver entry switches
77 */
78
79struct buf;
80struct proc;
81struct tty;
82struct uio;
83struct vnode;
84
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85/*
86 * Types for d_type.
87 * These are returned by ioctl FIODTYPE
88 */
89#define D_TAPE 1
90#define D_DISK 2
91#define D_TTY 3
92
93#ifdef KERNEL
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94/*
95 * Device switch function types.
96 */
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97typedef int open_close_fcn_t(dev_t dev, int flags, int devtype,
98 struct proc *p);
99
100typedef struct tty *d_devtotty_t(dev_t dev);
101
102typedef void strategy_fcn_t(struct buf *bp);
103typedef int ioctl_fcn_t(dev_t dev, u_long cmd, caddr_t data,
104 int fflag, struct proc *p);
105typedef int dump_fcn_t(void); /* parameters vary by architecture */
106typedef int psize_fcn_t(dev_t dev);
107typedef int read_write_fcn_t(dev_t dev, struct uio *uio, int ioflag);
108typedef int stop_fcn_t(struct tty *tp, int rw);
109typedef int reset_fcn_t(int uban);
110typedef int select_fcn_t(dev_t dev, int which, void * wql, struct proc *p);
111typedef int mmap_fcn_t(void);
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112
113#define d_open_t open_close_fcn_t
114#define d_close_t open_close_fcn_t
115#define d_read_t read_write_fcn_t
116#define d_write_t read_write_fcn_t
117#define d_ioctl_t ioctl_fcn_t
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118#define d_stop_t stop_fcn_t
119#define d_reset_t reset_fcn_t
120#define d_select_t select_fcn_t
121#define d_mmap_t mmap_fcn_t
122#define d_strategy_t strategy_fcn_t
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123
124__BEGIN_DECLS
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125int enodev(void);
126void enodev_strat(void);
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127__END_DECLS
128
129/*
130 * Versions of enodev() pointer, cast to appropriate function type. For use
131 * in empty devsw slots.
132 */
133#define eno_opcl ((open_close_fcn_t *)&enodev)
134#define eno_strat ((strategy_fcn_t *)&enodev_strat)
135#define eno_ioctl ((ioctl_fcn_t *)&enodev)
136#define eno_dump ((dump_fcn_t *)&enodev)
137#define eno_psize ((psize_fcn_t *)&enodev)
138#define eno_rdwrt ((read_write_fcn_t *)&enodev)
139#define eno_stop ((stop_fcn_t *)&enodev)
140#define eno_reset ((reset_fcn_t *)&enodev)
141#define eno_mmap ((mmap_fcn_t *)&enodev)
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142#define eno_select ((select_fcn_t *)&enodev)
143
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144/* For source backward compatibility only! */
145#define eno_getc ((void *)&enodev)
146#define eno_putc ((void *)&enodev)
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147
148/*
149 * Block device switch table
150 */
151struct bdevsw {
152 open_close_fcn_t *d_open;
153 open_close_fcn_t *d_close;
154 strategy_fcn_t *d_strategy;
155 ioctl_fcn_t *d_ioctl;
156 dump_fcn_t *d_dump;
157 psize_fcn_t *d_psize;
158 int d_type;
159};
160
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161
162d_devtotty_t nodevtotty;
163d_write_t nowrite;
164
91447636 165#ifdef KERNEL_PRIVATE
1c79356b 166extern struct bdevsw bdevsw[];
91447636 167#endif /* KERNEL_PRIVATE */
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168
169/*
170 * Contents of empty bdevsw slot.
171 */
172#define NO_BDEVICE \
173 { eno_opcl, eno_opcl, eno_strat, eno_ioctl, \
174 eno_dump, eno_psize, 0 }
175
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176
177/*
178 * Character device switch table
179 */
180struct cdevsw {
181 open_close_fcn_t *d_open;
182 open_close_fcn_t *d_close;
183 read_write_fcn_t *d_read;
184 read_write_fcn_t *d_write;
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185 ioctl_fcn_t *d_ioctl;
186 stop_fcn_t *d_stop;
187 reset_fcn_t *d_reset;
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188 struct tty **d_ttys;
189 select_fcn_t *d_select;
b0d623f7 190 mmap_fcn_t *d_mmap;
1c79356b 191 strategy_fcn_t *d_strategy;
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192 void *d_reserved_1;
193 void *d_reserved_2;
194 int d_type;
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195};
196
1c79356b 197
91447636 198#ifdef KERNEL_PRIVATE
1c79356b 199extern struct cdevsw cdevsw[];
91447636 200#endif /* KERNEL_PRIVATE */
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201
202/*
203 * Contents of empty cdevsw slot.
204 */
205
206#define NO_CDEVICE \
207 { \
208 eno_opcl, eno_opcl, eno_rdwrt, eno_rdwrt, \
209 eno_ioctl, eno_stop, eno_reset, 0, \
55e303ae 210 (select_fcn_t *)seltrue, eno_mmap, eno_strat, eno_getc, \
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211 eno_putc, 0 \
212 }
91447636 213
9bccf70c 214#endif /* KERNEL */
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215
216#ifdef KERNEL_PRIVATE
217typedef int l_open_t (dev_t dev, struct tty *tp);
218typedef int l_close_t(struct tty *tp, int flags);
219typedef int l_read_t (struct tty *tp, struct uio *uio, int flag);
220typedef int l_write_t(struct tty *tp, struct uio *uio, int flag);
221typedef int l_ioctl_t(struct tty *tp, u_long cmd, caddr_t data, int flag,
222 struct proc *p);
223typedef int l_rint_t (int c, struct tty *tp);
224typedef void l_start_t(struct tty *tp);
225typedef int l_modem_t(struct tty *tp, int flag);
226
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227/*
228 * Line discipline switch table
229 */
230struct linesw {
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231 l_open_t *l_open;
232 l_close_t *l_close;
233 l_read_t *l_read;
234 l_write_t *l_write;
235 l_ioctl_t *l_ioctl;
236 l_rint_t *l_rint;
237 l_start_t *l_start;
238 l_modem_t *l_modem;
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239};
240
9bccf70c 241
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242extern struct linesw linesw[];
243extern int nlinesw;
244
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245int ldisc_register(int , struct linesw *);
246void ldisc_deregister(int);
1c79356b 247#define LDISC_LOAD -1 /* Loadable line discipline */
1c79356b 248
91447636 249#endif /* KERNEL_PRIVATE */
9bccf70c 250
91447636 251#ifdef BSD_KERNEL_PRIVATE
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252/*
253 * Swap device table
254 */
255struct swdevt {
256 dev_t sw_dev;
257 int sw_flags;
258 int sw_nblks;
259 struct vnode *sw_vp;
260};
261#define SW_FREED 0x01
262#define SW_SEQUENTIAL 0x02
263#define sw_freed sw_flags /* XXX compat */
264
1c79356b 265extern struct swdevt swdevt[];
9bccf70c 266
91447636 267#endif /* BSD_KERNEL_PRIVATE */
9bccf70c 268
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269
270#ifdef KERNEL
271/*
272 * ***_free finds free slot;
273 * ***_add adds entries to the devsw table
274 * If int arg is -1; finds a free slot
275 * Returns the major number if successful
276 * else -1
277 */
278__BEGIN_DECLS
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279int bdevsw_isfree(int);
280int bdevsw_add(int, struct bdevsw *);
281int bdevsw_remove(int, struct bdevsw *);
282int cdevsw_isfree(int);
283int cdevsw_add(int, struct cdevsw *);
284int cdevsw_add_with_bdev(int index, struct cdevsw * csw, int bdev);
285int cdevsw_remove(int, struct cdevsw *);
b0d623f7 286int isdisk(dev_t, int);
1c79356b 287__END_DECLS
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288#endif /* KERNEL */
289
1c79356b 290#endif /* _SYS_CONF_H_ */