316 lines
10 KiB
C
316 lines
10 KiB
C
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/*
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* Copyright (c) 2000-2012 Apple Computer, Inc. All rights reserved.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. The rights granted to you under the License
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* may not be used to create, or enable the creation or redistribution of,
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* unlawful or unlicensed copies of an Apple operating system, or to
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* circumvent, violate, or enable the circumvention or violation of, any
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* terms of an Apple operating system software license agreement.
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*
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* Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
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*/
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/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
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/*-
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* All or some portions of this file are derived from material licensed
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* to the University of California by American Telephone and Telegraph
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* Co. or Unix System Laboratories, Inc. and are reproduced herein with
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* the permission of UNIX System Laboratories, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)conf.h 8.5 (Berkeley) 1/9/95
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*/
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#ifndef _SYS_CONF_H_
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#define _SYS_CONF_H_ 1
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#include <sys/appleapiopts.h>
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#include <sys/cdefs.h>
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#include <sys/queue.h>
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#include <stdint.h>
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/*
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* Definitions of device driver entry switches
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*/
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struct buf;
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struct proc;
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struct tty;
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struct uio;
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struct vnode;
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/*
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* Types for d_type.
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* These are returned by ioctl FIODTYPE
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*/
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#define D_TAPE 1
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#define D_DISK 2
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#define D_TTY 3
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#ifdef KERNEL
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/*
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* Device switch function types.
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*/
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typedef int open_close_fcn_t(dev_t dev, int flags, int devtype,
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struct proc *p);
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typedef struct tty *d_devtotty_t(dev_t dev);
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typedef void strategy_fcn_t(struct buf *bp);
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typedef int ioctl_fcn_t(dev_t dev, u_long cmd, caddr_t data,
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int fflag, struct proc *p);
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typedef int dump_fcn_t(void); /* parameters vary by architecture */
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typedef int psize_fcn_t(dev_t dev);
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typedef int read_write_fcn_t(dev_t dev, struct uio *uio, int ioflag);
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typedef int stop_fcn_t(struct tty *tp, int rw);
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typedef int reset_fcn_t(int uban);
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typedef int select_fcn_t(dev_t dev, int which, void * wql, struct proc *p);
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typedef int mmap_fcn_t(void);
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typedef int rsvd_fcn_t(void);
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typedef void empty_fcn_t(void);
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#define d_open_t open_close_fcn_t
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#define d_close_t open_close_fcn_t
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#define d_read_t read_write_fcn_t
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#define d_write_t read_write_fcn_t
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#define d_ioctl_t ioctl_fcn_t
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#define d_stop_t stop_fcn_t
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#define d_reset_t reset_fcn_t
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#define d_select_t select_fcn_t
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#define d_mmap_t mmap_fcn_t
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#define d_strategy_t strategy_fcn_t
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__BEGIN_DECLS
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int enodev(void);
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void enodev_strat(void);
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__END_DECLS
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/*
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* Versions of enodev() pointer, cast to appropriate function type. For use
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* in empty devsw slots.
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*/
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#define eno_opcl ((open_close_fcn_t *)(empty_fcn_t*)&enodev)
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#define eno_strat ((strategy_fcn_t *)(empty_fcn_t*)&enodev_strat)
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#define eno_ioctl ((ioctl_fcn_t *)(empty_fcn_t*)&enodev)
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#define eno_dump ((dump_fcn_t *)(empty_fcn_t*)&enodev)
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#define eno_psize ((psize_fcn_t *)(empty_fcn_t*)&enodev)
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#define eno_rdwrt ((read_write_fcn_t *)(empty_fcn_t*)&enodev)
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#define eno_stop ((stop_fcn_t *)(empty_fcn_t*)&enodev)
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#define eno_reset ((reset_fcn_t *)(empty_fcn_t*)&enodev)
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#define eno_mmap ((mmap_fcn_t *)(empty_fcn_t*)&enodev)
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#define eno_select ((select_fcn_t *)(empty_fcn_t*)&enodev)
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/* For source backward compatibility only! */
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#define eno_getc ((rsvd_fcn_t *)&enodev)
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#define eno_putc ((rsvd_fcn_t *)&enodev)
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/*
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* Block device switch table
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*/
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struct bdevsw {
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open_close_fcn_t *d_open;
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open_close_fcn_t *d_close;
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strategy_fcn_t *d_strategy;
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ioctl_fcn_t *d_ioctl;
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dump_fcn_t *d_dump;
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psize_fcn_t *d_psize;
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int d_type;
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};
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d_devtotty_t nodevtotty;
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d_write_t nowrite;
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#ifdef KERNEL_PRIVATE
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extern struct bdevsw bdevsw[];
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extern int (*bootcache_contains_block)(dev_t device, u_int64_t blkno);
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#endif /* KERNEL_PRIVATE */
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/*
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* Contents of empty bdevsw slot.
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*/
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#define NO_BDEVICE \
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{ eno_opcl, eno_opcl, eno_strat, eno_ioctl, \
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eno_dump, eno_psize, 0 }
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/*
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* Character device switch table
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*/
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struct cdevsw {
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open_close_fcn_t *d_open;
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open_close_fcn_t *d_close;
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read_write_fcn_t *d_read;
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read_write_fcn_t *d_write;
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ioctl_fcn_t *d_ioctl;
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stop_fcn_t *d_stop;
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reset_fcn_t *d_reset;
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struct tty **d_ttys;
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select_fcn_t *d_select;
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mmap_fcn_t *d_mmap;
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strategy_fcn_t *d_strategy;
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rsvd_fcn_t *d_reserved_1;
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rsvd_fcn_t *d_reserved_2;
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int d_type;
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};
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#ifdef BSD_KERNEL_PRIVATE
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extern uint64_t cdevsw_flags[];
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#define CDEVSW_SELECT_KQUEUE 0x01
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#define CDEVSW_USE_OFFSET 0x02
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#define CDEVSW_IS_PTC 0x04
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#define CDEVSW_IS_PTS 0x08
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struct thread;
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#endif /* BSD_KERNEL_PRIVATE */
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/*
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* Contents of empty cdevsw slot.
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*/
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#define NO_CDEVICE \
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{ \
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eno_opcl, eno_opcl, eno_rdwrt, eno_rdwrt, \
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eno_ioctl, eno_stop, eno_reset, 0, \
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(select_fcn_t *)(void (*)(void))seltrue, eno_mmap, \
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eno_strat, eno_getc, \
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eno_putc, 0 \
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}
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#endif /* KERNEL */
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#ifdef KERNEL_PRIVATE
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typedef int l_open_t (dev_t dev, struct tty *tp);
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typedef int l_close_t(struct tty *tp, int flags);
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typedef int l_read_t (struct tty *tp, struct uio *uio, int flag);
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typedef int l_write_t(struct tty *tp, struct uio *uio, int flag);
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typedef int l_ioctl_t(struct tty *tp, u_long cmd, caddr_t data, int flag,
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struct proc *p);
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typedef int l_rint_t (int c, struct tty *tp);
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typedef void l_start_t(struct tty *tp);
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typedef int l_modem_t(struct tty *tp, int flag);
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/*
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* Line discipline switch table
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*/
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struct linesw {
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l_open_t *l_open;
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l_close_t *l_close;
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l_read_t *l_read;
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l_write_t *l_write;
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l_ioctl_t *l_ioctl;
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l_rint_t *l_rint;
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l_start_t *l_start;
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l_modem_t *l_modem;
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};
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extern struct linesw linesw[];
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extern const int nlinesw;
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int ldisc_register(int, struct linesw *);
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void ldisc_deregister(int);
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#define LDISC_LOAD -1 /* Loadable line discipline */
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#endif /* KERNEL_PRIVATE */
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#ifdef BSD_KERNEL_PRIVATE
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/*
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* Swap device table
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*/
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struct swdevt {
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dev_t sw_dev;
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int sw_flags;
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int sw_nblks;
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struct vnode *sw_vp;
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};
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#define SW_FREED 0x01
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#define SW_SEQUENTIAL 0x02
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#define sw_freed sw_flags /* XXX compat */
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extern struct swdevt swdevt[];
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#endif /* BSD_KERNEL_PRIVATE */
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#ifdef KERNEL
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/*
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* ***_free finds free slot;
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* ***_add adds entries to the devsw table
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* If int arg is -1; finds a free slot
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* Returns the major number if successful
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* else -1
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*/
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__BEGIN_DECLS
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#ifdef KERNEL_PRIVATE
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extern struct cdevsw cdevsw[];
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extern int cdevsw_setkqueueok(int, const struct cdevsw*, int);
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#endif /* KERNEL_PRIVATE */
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#ifdef BSD_KERNEL_PRIVATE
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extern void devsw_lock(dev_t, int);
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extern void devsw_unlock(dev_t, int);
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#endif /* BSD_KERNEL_PRIVATE */
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int bdevsw_isfree(int);
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int bdevsw_add(int, const struct bdevsw *);
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int bdevsw_remove(int, const struct bdevsw *);
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int cdevsw_isfree(int);
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int cdevsw_add(int, const struct cdevsw *);
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int cdevsw_add_with_bdev(int index, const struct cdevsw * csw, int bdev);
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int cdevsw_remove(int, const struct cdevsw *);
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int isdisk(dev_t, int);
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__END_DECLS
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#endif /* KERNEL */
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#endif /* _SYS_CONF_H_ */
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