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 81struct buf; 82struct proc; 83struct tty; 84struct uio; 85struct 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 */ 99typedef int open_close_fcn_t(dev_t dev, int flags, int devtype, 100 struct proc *p); 101 102typedef struct tty *d_devtotty_t(dev_t dev); 103 104typedef void strategy_fcn_t(struct buf *bp); 105typedef int ioctl_fcn_t(dev_t dev, u_long cmd, caddr_t data, 106 int fflag, struct proc *p); 107typedef int dump_fcn_t(void); /* parameters vary by architecture */ 108typedef int psize_fcn_t(dev_t dev); 109typedef int read_write_fcn_t(dev_t dev, struct uio *uio, int ioflag); 110typedef int stop_fcn_t(struct tty *tp, int rw); 111typedef int reset_fcn_t(int uban); 112typedef int select_fcn_t(dev_t dev, int which, void * wql, struct proc *p); 113typedef 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 127int enodev(void); 128void 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 */ 153struct 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 164d_devtotty_t nodevtotty; 165d_write_t nowrite; 166 167#ifdef KERNEL_PRIVATE 168extern struct bdevsw bdevsw[]; 169extern 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 */ 183struct 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 201void devsw_init(void); 202 203extern uint64_t cdevsw_flags[]; 204#define CDEVSW_SELECT_KQUEUE 0x01 205#define CDEVSW_USE_OFFSET 0x02 206 207struct thread; 208 209typedef struct devsw_lock { 210 TAILQ_ENTRY(devsw_lock) dl_list; 211 struct thread *dl_thread; 212 dev_t dl_dev; 213 int dl_mode; 214} *devsw_lock_t; 215 216#endif /* BSD_KERNEL_PRIVATE */ 217 218 219/* 220 * Contents of empty cdevsw slot. 221 */ 222 223#define NO_CDEVICE \ 224 { \ 225 eno_opcl, eno_opcl, eno_rdwrt, eno_rdwrt, \ 226 eno_ioctl, eno_stop, eno_reset, 0, \ 227 (select_fcn_t *)seltrue, eno_mmap, eno_strat, eno_getc, \ 228 eno_putc, 0 \ 229 } 230 231#endif /* KERNEL */ 232 233#ifdef KERNEL_PRIVATE 234typedef int l_open_t (dev_t dev, struct tty *tp); 235typedef int l_close_t(struct tty *tp, int flags); 236typedef int l_read_t (struct tty *tp, struct uio *uio, int flag); 237typedef int l_write_t(struct tty *tp, struct uio *uio, int flag); 238typedef int l_ioctl_t(struct tty *tp, u_long cmd, caddr_t data, int flag, 239 struct proc *p); 240typedef int l_rint_t (int c, struct tty *tp); 241typedef void l_start_t(struct tty *tp); 242typedef int l_modem_t(struct tty *tp, int flag); 243 244/* 245 * Line discipline switch table 246 */ 247struct linesw { 248 l_open_t *l_open; 249 l_close_t *l_close; 250 l_read_t *l_read; 251 l_write_t *l_write; 252 l_ioctl_t *l_ioctl; 253 l_rint_t *l_rint; 254 l_start_t *l_start; 255 l_modem_t *l_modem; 256}; 257 258 259extern struct linesw linesw[]; 260extern const int nlinesw; 261 262int ldisc_register(int , struct linesw *); 263void ldisc_deregister(int); 264#define LDISC_LOAD -1 /* Loadable line discipline */ 265 266#endif /* KERNEL_PRIVATE */ 267 268#ifdef BSD_KERNEL_PRIVATE 269/* 270 * Swap device table 271 */ 272struct swdevt { 273 dev_t sw_dev; 274 int sw_flags; 275 int sw_nblks; 276 struct vnode *sw_vp; 277}; 278#define SW_FREED 0x01 279#define SW_SEQUENTIAL 0x02 280#define sw_freed sw_flags /* XXX compat */ 281 282extern struct swdevt swdevt[]; 283 284#endif /* BSD_KERNEL_PRIVATE */ 285 286 287#ifdef KERNEL 288/* 289 * ***_free finds free slot; 290 * ***_add adds entries to the devsw table 291 * If int arg is -1; finds a free slot 292 * Returns the major number if successful 293 * else -1 294 */ 295__BEGIN_DECLS 296#ifdef KERNEL_PRIVATE 297extern struct cdevsw cdevsw[]; 298extern int cdevsw_setkqueueok(int, struct cdevsw*, int); 299#endif /* KERNEL_PRIVATE */ 300 301#ifdef BSD_KERNEL_PRIVATE 302extern void devsw_lock(dev_t, int); 303extern void devsw_unlock(dev_t, int); 304#endif /* BSD_KERNEL_PRIVATE */ 305 306int bdevsw_isfree(int); 307int bdevsw_add(int, struct bdevsw *); 308int bdevsw_remove(int, struct bdevsw *); 309int cdevsw_isfree(int); 310int cdevsw_add(int, struct cdevsw *); 311int cdevsw_add_with_bdev(int index, struct cdevsw * csw, int bdev); 312int cdevsw_remove(int, struct cdevsw *); 313int isdisk(dev_t, int); 314__END_DECLS 315#endif /* KERNEL */ 316 317#endif /* _SYS_CONF_H_ */ 318