227f9a1c58
where physical addresses larger than virtual addresses, such as i386s with PAE. - Use this to represent physical addresses in the MI vm system and in the i386 pmap code. This also changes the paddr parameter to d_mmap_t. - Fix printf formats to handle physical addresses >4G in the i386 memory detection code, and due to kvtop returning vm_paddr_t instead of u_long. Note that this is a name change only; vm_paddr_t is still the same as vm_offset_t on all currently supported platforms. Sponsored by: DARPA, Network Associates Laboratories Discussed with: re, phk (cdevsw change)
359 lines
11 KiB
C
359 lines
11 KiB
C
/*-
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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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* Copyright (c) 2000
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* Poul-Henning Kamp. 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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* $FreeBSD$
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*/
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#ifndef _SYS_CONF_H_
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#define _SYS_CONF_H_
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#ifdef _KERNEL
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#include <sys/eventhandler.h>
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struct tty;
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struct disk;
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struct vnode;
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struct buf;
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TAILQ_HEAD(snaphead, inode);
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struct cdev {
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u_int si_flags;
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#define SI_STASHED 0x0001 /* created in stashed storage */
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#define SI_ALIAS 0x0002 /* carrier of alias name */
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#define SI_NAMED 0x0004 /* make_dev{_alias} has been called */
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#define SI_CHEAPCLONE 0x0008 /* can be removed_dev'ed when vnode reclaims */
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#define SI_CHILD 0x0010 /* child of another dev_t */
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#define SI_DEVOPEN 0x0020 /* opened by device */
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#define SI_CONSOPEN 0x0040 /* opened by console */
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#define SI_DUMPDEV 0x0080 /* is kernel dumpdev */
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#define SI_CANDELETE 0x0100 /* can do BIO_DELETE */
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struct timespec si_atime;
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struct timespec si_ctime;
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struct timespec si_mtime;
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udev_t si_udev;
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LIST_ENTRY(cdev) si_hash;
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SLIST_HEAD(, vnode) si_hlist;
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LIST_HEAD(, cdev) si_children;
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LIST_ENTRY(cdev) si_siblings;
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dev_t si_parent;
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u_int si_inode;
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char *si_name;
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void *si_drv1, *si_drv2;
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struct cdevsw *si_devsw;
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int si_iosize_max; /* maximum I/O size (for physio &al) */
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u_int si_stripesize;
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u_int si_stripeoffset;
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uid_t si_uid;
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gid_t si_gid;
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mode_t si_mode;
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u_long si_usecount;
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union {
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struct {
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struct tty *__sit_tty;
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} __si_tty;
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struct {
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struct mount *__sid_mountpoint;
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int __sid_bsize_phys; /* min physical block size */
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int __sid_bsize_best; /* optimal block size */
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struct snaphead __sid_snapshots;
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daddr_t __sid_snaplistsize; /* size of snapblklist. */
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daddr_t *__sid_snapblklist; /* known snapshot blocks. */
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int (*__sid_copyonwrite)(struct vnode *, struct buf *);
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} __si_disk;
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} __si_u;
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char __si_namebuf[SPECNAMELEN + 1];
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};
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#define si_tty __si_u.__si_tty.__sit_tty
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#define si_mountpoint __si_u.__si_disk.__sid_mountpoint
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#define si_bsize_phys __si_u.__si_disk.__sid_bsize_phys
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#define si_bsize_best __si_u.__si_disk.__sid_bsize_best
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#define si_snapshots __si_u.__si_disk.__sid_snapshots
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#define si_snaplistsize __si_u.__si_disk.__sid_snaplistsize
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#define si_snapblklist __si_u.__si_disk.__sid_snapblklist
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#define si_copyonwrite __si_u.__si_disk.__sid_copyonwrite
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/*
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* Special device management
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*/
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#define SPECHSZ 64
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#define SPECHASH(rdev) (((unsigned)(minor(rdev)))%SPECHSZ)
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/*
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* Definitions of device driver entry switches
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*/
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struct bio;
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struct buf;
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struct thread;
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struct uio;
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struct knote;
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/*
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* Note: d_thread_t is provided as a transition aid for those drivers
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* that treat struct proc/struct thread as an opaque data type and
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* exist in substantially the same form in both 4.x and 5.x. Writers
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* of drivers that dips into the d_thread_t structure should use
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* struct thread or struct proc as appropriate for the version of the
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* OS they are using. It is provided in lieu of each device driver
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* inventing its own way of doing this. While it does violate style(9)
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* in a number of ways, this violation is deemed to be less
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* important than the benefits that a uniform API between releases
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* gives.
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*
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* Users of struct thread/struct proc that aren't device drivers should
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* not use d_thread_t.
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*/
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typedef struct thread d_thread_t;
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typedef int d_open_t(dev_t dev, int oflags, int devtype, struct thread *td);
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typedef int d_close_t(dev_t dev, int fflag, int devtype, struct thread *td);
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typedef void d_strategy_t(struct bio *bp);
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typedef int d_ioctl_t(dev_t dev, u_long cmd, caddr_t data,
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int fflag, struct thread *td);
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typedef int d_read_t(dev_t dev, struct uio *uio, int ioflag);
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typedef int d_write_t(dev_t dev, struct uio *uio, int ioflag);
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typedef int d_poll_t(dev_t dev, int events, struct thread *td);
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typedef int d_kqfilter_t(dev_t dev, struct knote *kn);
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typedef int d_mmap_t(dev_t dev, vm_offset_t offset, vm_paddr_t *paddr,
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int nprot);
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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 flag);
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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,
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int flag, struct thread *td);
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typedef int l_rint_t(int c, struct tty *tp);
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typedef int l_start_t(struct tty *tp);
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typedef int l_modem_t(struct tty *tp, int flag);
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typedef int dumper_t(
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void *priv, /* Private to the driver. */
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void *virtual, /* Virtual (mapped) address. */
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vm_offset_t physical, /* Physical address of virtual. */
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off_t offset, /* Byte-offset to write at. */
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size_t length); /* Number of bytes to dump. */
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#define BIO_STRATEGY(bp) \
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do { \
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if ((!(bp)->bio_cmd) || ((bp)->bio_cmd & ((bp)->bio_cmd - 1))) \
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Debugger("bio_cmd botch"); \
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(*devsw((bp)->bio_dev)->d_strategy)(bp); \
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} while (0)
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#define DEV_STRATEGY(bp) \
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do { \
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if ((bp)->b_flags & B_PHYS) \
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(bp)->b_io.bio_offset = (bp)->b_offset; \
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else \
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(bp)->b_io.bio_offset = dbtob((bp)->b_blkno); \
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(bp)->b_io.bio_done = bufdonebio; \
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(bp)->b_io.bio_caller2 = (bp); \
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BIO_STRATEGY(&(bp)->b_io); \
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} while (0)
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#endif /* _KERNEL */
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/*
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* Types for d_flags.
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*/
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#define D_TAPE 0x0001
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#define D_DISK 0x0002
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#define D_TTY 0x0004
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#define D_MEM 0x0008
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#ifdef _KERNEL
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#define D_TYPEMASK 0xffff
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/*
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* Flags for d_flags.
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*/
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#define D_MEMDISK 0x00010000 /* memory type disk */
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#define D_NAGGED 0x00020000 /* nagged about missing make_dev() */
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#define D_TRACKCLOSE 0x00080000 /* track all closes */
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#define D_MMAP_ANON 0x00100000 /* special treatment in vm_mmap.c */
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#define D_NOGIANT 0x00400000 /* Doesn't want Giant */
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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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int d_maj;
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u_int d_flags;
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const char *d_name;
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d_open_t *d_open;
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d_close_t *d_close;
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d_read_t *d_read;
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d_write_t *d_write;
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d_ioctl_t *d_ioctl;
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d_poll_t *d_poll;
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d_mmap_t *d_mmap;
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d_strategy_t *d_strategy;
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dumper_t *d_dump;
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d_kqfilter_t *d_kqfilter;
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};
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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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u_char l_hotchar;
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};
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extern struct linesw linesw[];
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extern 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 */
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#ifdef _KERNEL
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d_open_t noopen;
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d_close_t noclose;
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d_read_t noread;
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d_write_t nowrite;
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d_ioctl_t noioctl;
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d_mmap_t nommap;
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d_kqfilter_t nokqfilter;
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#define nostrategy ((d_strategy_t *)NULL)
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#define nopoll seltrue
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dumper_t nodump;
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#define NUMCDEVSW 256
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#define MAJOR_AUTO 0 /* XXX: Not GM */
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/*
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* nopsize is little used, so not worth having dummy functions for.
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*/
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#define nopsize (NULL)
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d_open_t nullopen;
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d_close_t nullclose;
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l_ioctl_t l_nullioctl;
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l_read_t l_noread;
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l_write_t l_nowrite;
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struct module;
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struct devsw_module_data {
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int (*chainevh)(struct module *, int, void *); /* next handler */
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void *chainarg; /* arg for next event handler */
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/* Do not initialize fields hereafter */
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};
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#define DEV_MODULE(name, evh, arg) \
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static moduledata_t name##_mod = { \
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#name, \
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evh, \
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arg \
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}; \
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DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE)
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int count_dev(dev_t _dev);
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void destroy_dev(dev_t _dev);
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void revoke_and_destroy_dev(dev_t _dev);
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struct cdevsw *devsw(dev_t _dev);
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const char *devtoname(dev_t _dev);
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int dev_named(dev_t _pdev, const char *_name);
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void dev_depends(dev_t _pdev, dev_t _cdev);
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void freedev(dev_t _dev);
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dev_t makebdev(int _maj, int _min);
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dev_t make_dev(struct cdevsw *_devsw, int _minor, uid_t _uid, gid_t _gid,
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int _perms, const char *_fmt, ...) __printflike(6, 7);
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dev_t make_dev_alias(dev_t _pdev, const char *_fmt, ...) __printflike(2, 3);
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int dev2unit(dev_t _dev);
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int unit2minor(int _unit);
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void setconf(void);
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dev_t getdiskbyname(char *_name);
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void devfs_create(dev_t dev);
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void devfs_destroy(dev_t dev);
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#define UID_ROOT 0
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#define UID_BIN 3
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#define UID_UUCP 66
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#define GID_WHEEL 0
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#define GID_KMEM 2
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#define GID_OPERATOR 5
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#define GID_BIN 7
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#define GID_GAMES 13
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#define GID_DIALER 68
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typedef void (*dev_clone_fn)(void *arg, char *name, int namelen, dev_t *result);
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int dev_stdclone(char *_name, char **_namep, const char *_stem, int *_unit);
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EVENTHANDLER_DECLARE(dev_clone, dev_clone_fn);
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/* Stuff relating to kernel-dump */
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struct dumperinfo {
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dumper_t *dumper; /* Dumping function. */
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void *priv; /* Private parts. */
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u_int blocksize; /* Size of block in bytes. */
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off_t mediaoffset; /* Initial offset in bytes. */
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off_t mediasize; /* Space available in bytes. */
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};
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int set_dumper(struct dumperinfo *);
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void dumpsys(struct dumperinfo *);
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extern int dumping; /* system is dumping */
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#endif /* _KERNEL */
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#endif /* !_SYS_CONF_H_ */
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