1 | /* |
2 | * Copyright (c) 2000-2012 Apple Computer, Inc. All rights reserved. |
3 | * |
4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
5 | * |
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. |
14 | * |
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 |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
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. |
25 | * |
26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
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 | |
72 | #include <sys/appleapiopts.h> |
73 | #include <sys/cdefs.h> |
74 | #include <sys/queue.h> |
75 | #include <stdint.h> |
76 | |
77 | /* |
78 | * Definitions of device driver entry switches |
79 | */ |
80 | |
81 | struct buf; |
82 | struct proc; |
83 | struct tty; |
84 | struct uio; |
85 | struct vnode; |
86 | |
87 | /* |
88 | * Types for d_type. |
89 | * These are returned by ioctl FIODTYPE |
90 | */ |
91 | #define D_TAPE 1 |
92 | #define D_DISK 2 |
93 | #define D_TTY 3 |
94 | |
95 | #ifdef KERNEL |
96 | /* |
97 | * Device switch function types. |
98 | */ |
99 | typedef int open_close_fcn_t(dev_t dev, int flags, int devtype, |
100 | struct proc *p); |
101 | |
102 | typedef struct tty *d_devtotty_t(dev_t dev); |
103 | |
104 | typedef void strategy_fcn_t(struct buf *bp); |
105 | typedef int ioctl_fcn_t(dev_t dev, u_long cmd, caddr_t data, |
106 | int fflag, struct proc *p); |
107 | typedef int dump_fcn_t(void); /* parameters vary by architecture */ |
108 | typedef int psize_fcn_t(dev_t dev); |
109 | typedef int read_write_fcn_t(dev_t dev, struct uio *uio, int ioflag); |
110 | typedef int stop_fcn_t(struct tty *tp, int rw); |
111 | typedef int reset_fcn_t(int uban); |
112 | typedef int select_fcn_t(dev_t dev, int which, void * wql, struct proc *p); |
113 | typedef int mmap_fcn_t(void); |
114 | |
115 | #define d_open_t open_close_fcn_t |
116 | #define d_close_t open_close_fcn_t |
117 | #define d_read_t read_write_fcn_t |
118 | #define d_write_t read_write_fcn_t |
119 | #define d_ioctl_t ioctl_fcn_t |
120 | #define d_stop_t stop_fcn_t |
121 | #define d_reset_t reset_fcn_t |
122 | #define d_select_t select_fcn_t |
123 | #define d_mmap_t mmap_fcn_t |
124 | #define d_strategy_t strategy_fcn_t |
125 | |
126 | __BEGIN_DECLS |
127 | int enodev(void); |
128 | void enodev_strat(void); |
129 | __END_DECLS |
130 | |
131 | /* |
132 | * Versions of enodev() pointer, cast to appropriate function type. For use |
133 | * in empty devsw slots. |
134 | */ |
135 | #define eno_opcl ((open_close_fcn_t *)&enodev) |
136 | #define eno_strat ((strategy_fcn_t *)&enodev_strat) |
137 | #define eno_ioctl ((ioctl_fcn_t *)&enodev) |
138 | #define eno_dump ((dump_fcn_t *)&enodev) |
139 | #define eno_psize ((psize_fcn_t *)&enodev) |
140 | #define eno_rdwrt ((read_write_fcn_t *)&enodev) |
141 | #define eno_stop ((stop_fcn_t *)&enodev) |
142 | #define eno_reset ((reset_fcn_t *)&enodev) |
143 | #define eno_mmap ((mmap_fcn_t *)&enodev) |
144 | #define eno_select ((select_fcn_t *)&enodev) |
145 | |
146 | /* For source backward compatibility only! */ |
147 | #define eno_getc ((void *)&enodev) |
148 | #define eno_putc ((void *)&enodev) |
149 | |
150 | /* |
151 | * Block device switch table |
152 | */ |
153 | struct bdevsw { |
154 | open_close_fcn_t *d_open; |
155 | open_close_fcn_t *d_close; |
156 | strategy_fcn_t *d_strategy; |
157 | ioctl_fcn_t *d_ioctl; |
158 | dump_fcn_t *d_dump; |
159 | psize_fcn_t *d_psize; |
160 | int d_type; |
161 | }; |
162 | |
163 | |
164 | d_devtotty_t nodevtotty; |
165 | d_write_t nowrite; |
166 | |
167 | #ifdef KERNEL_PRIVATE |
168 | extern struct bdevsw bdevsw[]; |
169 | extern int (*bootcache_contains_block)(dev_t device, u_int64_t blkno); |
170 | #endif /* KERNEL_PRIVATE */ |
171 | |
172 | /* |
173 | * Contents of empty bdevsw slot. |
174 | */ |
175 | #define NO_BDEVICE \ |
176 | { eno_opcl, eno_opcl, eno_strat, eno_ioctl, \ |
177 | eno_dump, eno_psize, 0 } |
178 | |
179 | |
180 | /* |
181 | * Character device switch table |
182 | */ |
183 | struct cdevsw { |
184 | open_close_fcn_t *d_open; |
185 | open_close_fcn_t *d_close; |
186 | read_write_fcn_t *d_read; |
187 | read_write_fcn_t *d_write; |
188 | ioctl_fcn_t *d_ioctl; |
189 | stop_fcn_t *d_stop; |
190 | reset_fcn_t *d_reset; |
191 | struct tty **d_ttys; |
192 | select_fcn_t *d_select; |
193 | mmap_fcn_t *d_mmap; |
194 | strategy_fcn_t *d_strategy; |
195 | void *d_reserved_1; |
196 | void *d_reserved_2; |
197 | int d_type; |
198 | }; |
199 | |
200 | #ifdef BSD_KERNEL_PRIVATE |
201 | |
202 | extern uint64_t cdevsw_flags[]; |
203 | #define CDEVSW_SELECT_KQUEUE 0x01 |
204 | #define CDEVSW_USE_OFFSET 0x02 |
205 | #define CDEVSW_IS_PTC 0x04 |
206 | #define CDEVSW_IS_PTS 0x08 |
207 | |
208 | struct thread; |
209 | |
210 | typedef struct devsw_lock { |
211 | TAILQ_ENTRY(devsw_lock) dl_list; |
212 | struct thread *dl_thread; |
213 | dev_t dl_dev; |
214 | int dl_mode; |
215 | } *devsw_lock_t; |
216 | |
217 | #endif /* BSD_KERNEL_PRIVATE */ |
218 | |
219 | |
220 | /* |
221 | * Contents of empty cdevsw slot. |
222 | */ |
223 | |
224 | #define NO_CDEVICE \ |
225 | { \ |
226 | eno_opcl, eno_opcl, eno_rdwrt, eno_rdwrt, \ |
227 | eno_ioctl, eno_stop, eno_reset, 0, \ |
228 | (select_fcn_t *)seltrue, eno_mmap, eno_strat, eno_getc, \ |
229 | eno_putc, 0 \ |
230 | } |
231 | |
232 | #endif /* KERNEL */ |
233 | |
234 | #ifdef KERNEL_PRIVATE |
235 | typedef int l_open_t (dev_t dev, struct tty *tp); |
236 | typedef int l_close_t(struct tty *tp, int flags); |
237 | typedef int l_read_t (struct tty *tp, struct uio *uio, int flag); |
238 | typedef int l_write_t(struct tty *tp, struct uio *uio, int flag); |
239 | typedef int l_ioctl_t(struct tty *tp, u_long cmd, caddr_t data, int flag, |
240 | struct proc *p); |
241 | typedef int l_rint_t (int c, struct tty *tp); |
242 | typedef void l_start_t(struct tty *tp); |
243 | typedef int l_modem_t(struct tty *tp, int flag); |
244 | |
245 | /* |
246 | * Line discipline switch table |
247 | */ |
248 | struct linesw { |
249 | l_open_t *l_open; |
250 | l_close_t *l_close; |
251 | l_read_t *l_read; |
252 | l_write_t *l_write; |
253 | l_ioctl_t *l_ioctl; |
254 | l_rint_t *l_rint; |
255 | l_start_t *l_start; |
256 | l_modem_t *l_modem; |
257 | }; |
258 | |
259 | |
260 | extern struct linesw linesw[]; |
261 | extern const int nlinesw; |
262 | |
263 | int ldisc_register(int , struct linesw *); |
264 | void ldisc_deregister(int); |
265 | #define LDISC_LOAD -1 /* Loadable line discipline */ |
266 | |
267 | #endif /* KERNEL_PRIVATE */ |
268 | |
269 | #ifdef BSD_KERNEL_PRIVATE |
270 | /* |
271 | * Swap device table |
272 | */ |
273 | struct swdevt { |
274 | dev_t sw_dev; |
275 | int sw_flags; |
276 | int sw_nblks; |
277 | struct vnode *sw_vp; |
278 | }; |
279 | #define SW_FREED 0x01 |
280 | #define SW_SEQUENTIAL 0x02 |
281 | #define sw_freed sw_flags /* XXX compat */ |
282 | |
283 | extern struct swdevt swdevt[]; |
284 | |
285 | #endif /* BSD_KERNEL_PRIVATE */ |
286 | |
287 | |
288 | #ifdef KERNEL |
289 | /* |
290 | * ***_free finds free slot; |
291 | * ***_add adds entries to the devsw table |
292 | * If int arg is -1; finds a free slot |
293 | * Returns the major number if successful |
294 | * else -1 |
295 | */ |
296 | __BEGIN_DECLS |
297 | #ifdef KERNEL_PRIVATE |
298 | void devsw_init(void); |
299 | extern struct cdevsw cdevsw[]; |
300 | extern int cdevsw_setkqueueok(int, struct cdevsw*, int); |
301 | #endif /* KERNEL_PRIVATE */ |
302 | |
303 | #ifdef BSD_KERNEL_PRIVATE |
304 | extern void devsw_lock(dev_t, int); |
305 | extern void devsw_unlock(dev_t, int); |
306 | #endif /* BSD_KERNEL_PRIVATE */ |
307 | |
308 | int bdevsw_isfree(int); |
309 | int bdevsw_add(int, struct bdevsw *); |
310 | int bdevsw_remove(int, struct bdevsw *); |
311 | int cdevsw_isfree(int); |
312 | int cdevsw_add(int, struct cdevsw *); |
313 | int cdevsw_add_with_bdev(int index, struct cdevsw * csw, int bdev); |
314 | int cdevsw_remove(int, struct cdevsw *); |
315 | int isdisk(dev_t, int); |
316 | __END_DECLS |
317 | #endif /* KERNEL */ |
318 | |
319 | #endif /* _SYS_CONF_H_ */ |
320 | |