335 lines
10 KiB
C
335 lines
10 KiB
C
/* $NetBSD: conf.c,v 1.2 1996/05/12 20:50:11 oki Exp $ */
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/*-
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* Copyright (c) 1991 The Regents of the University of California.
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* All rights reserved.
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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.c 7.9 (Berkeley) 5/28/91
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/buf.h>
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#include <sys/ioctl.h>
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#include <sys/tty.h>
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#include <sys/conf.h>
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#include <sys/vnode.h>
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int ttselect __P((dev_t, int, struct proc *));
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#ifndef LKM
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#define lkmenodev enodev
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#else
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int lkmenodev();
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#endif
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bdev_decl(sw);
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#include "fd.h"
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#define fdopen Fdopen /* conflicts with fdopen() in kern_descrip.c */
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bdev_decl(fd);
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#undef fdopen
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#include "sd.h"
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bdev_decl(sd);
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#include "cd.h"
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bdev_decl(cd);
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#include "ccd.h"
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bdev_decl(ccd);
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#include "vnd.h"
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bdev_decl(vnd);
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#include "st.h"
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bdev_decl(st);
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struct bdevsw bdevsw[] =
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{
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bdev_notdef(), /* 0: */
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bdev_notdef(), /* 1: */
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#define fdopen Fdopen
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bdev_disk_init(NFD,fd), /* 2: floppy diskette */
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#undef fdopen
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bdev_swap_init(1,sw), /* 3: swap pseudo-device */
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bdev_disk_init(NSD,sd), /* 4: SCSI disk */
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bdev_tape_init(NST,st), /* 5: SCSI tape */
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bdev_disk_init(NVND,vnd), /* 6: vnode disk driver */
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bdev_disk_init(NCD,cd), /* 7: SCSI cdrom */
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bdev_notdef(), /* 8: */
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bdev_lkm_dummy(), /* 9 */
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bdev_lkm_dummy(), /* 10 */
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bdev_lkm_dummy(), /* 11 */
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bdev_lkm_dummy(), /* 12 */
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bdev_lkm_dummy(), /* 13 */
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bdev_lkm_dummy(), /* 14 */
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};
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int nblkdev = sizeof(bdevsw) / sizeof(bdevsw[0]);
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/* open, close, read, write, ioctl, select */
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#define cdev_gen_init(c,n) { \
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dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \
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dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) nullop, \
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0, dev_init(c,n,select), (dev_type_mmap((*))) enodev }
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/* open, close, ioctl, select, mmap -- XXX should be a map device */
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#define cdev_grf_init(c,n) { \
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dev_init(c,n,open), dev_init(c,n,close), (dev_type_read((*))) nullop, \
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(dev_type_write((*))) nullop, dev_init(c,n,ioctl), \
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(dev_type_stop((*))) enodev, 0, dev_init(c,n,select), \
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dev_init(c,n,mmap) }
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/* open, close, read, write, ioctl, tty, mmap */
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#define cdev_ite_init(c,n) { \
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dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \
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dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) enodev, \
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dev_init(c,n,tty), ttselect, (dev_type_mmap((*))) enodev, D_TTY }
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/* open, close, write, ioctl */
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#define cdev_par_init(c,n) { \
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dev_init(c,n,open), dev_init(c,n,close), (dev_type_read((*))) enodev, \
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dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) enodev, \
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0, seltrue, (dev_type_mmap((*))) enodev }
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/* open, close, ioctl */
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#define cdev_sram_init(c,n) { \
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dev_init(c,n,open), dev_init(c,n,close), (dev_type_read((*))) enodev, \
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(dev_type_write((*))) enodev, dev_init(c,n,ioctl), \
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(dev_type_stop((*))) nullop, 0, (dev_type_select((*))) enodev, \
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(dev_type_mmap((*))) enodev }
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/* open, close, ioctl */
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#define cdev_pow_init(c,n) { \
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dev_init(c,n,open), dev_init(c,n,close), (dev_type_read((*))) enodev, \
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(dev_type_write((*))) enodev, dev_init(c,n,ioctl), \
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(dev_type_stop((*))) nullop, 0, (dev_type_select((*))) enodev, \
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(dev_type_mmap((*))) enodev }
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/* open, close, ioctl */
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#define cdev_bell_init(c,n) { \
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dev_init(c,n,open), dev_init(c,n,close), (dev_type_read((*))) enodev, \
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(dev_type_write((*))) enodev, dev_init(c,n,ioctl), \
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(dev_type_stop((*))) nullop, 0, (dev_type_select((*))) enodev, \
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(dev_type_mmap((*))) enodev }
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/* open, close, read, ioctl */
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#define cdev_ss_init(c,n) { \
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dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \
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(dev_type_write((*))) enodev, dev_init(c,n,ioctl), \
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(dev_type_stop((*))) enodev, 0, seltrue, \
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(dev_type_mmap((*))) enodev }
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cdev_decl(cn);
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cdev_decl(ctty);
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#define mmread mmrw
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#define mmwrite mmrw
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cdev_decl(mm);
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cdev_decl(sw);
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#include "pty.h"
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#define ptstty ptytty
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#define ptsioctl ptyioctl
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cdev_decl(pts);
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#define ptctty ptytty
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#define ptcioctl ptyioctl
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cdev_decl(ptc);
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cdev_decl(log);
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cdev_decl(sd);
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#include "ss.h"
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cdev_decl(ss);
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cdev_decl(cd);
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#include "grf.h"
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cdev_decl(grf);
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#include "par.h"
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cdev_decl(par);
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#include "ite.h"
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cdev_decl(ite);
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cdev_decl(ccd);
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cdev_decl(vnd);
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cdev_decl(st);
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#define fdopen Fdopen
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cdev_decl(fd);
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#undef fdopen
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cdev_decl(kbd);
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cdev_decl(ms);
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dev_decl(filedesc,open);
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#include "audio.h"
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cdev_decl(audio);
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#include "sram.h"
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cdev_decl(sram);
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#include "bpfilter.h"
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cdev_decl(bpf);
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#include "tun.h"
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cdev_decl(tun);
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#ifdef LKM
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#define NLKM 1
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#else
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#define NLKM 0
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#endif
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#include "com.h"
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cdev_decl(com);
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#include "zs.h"
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cdev_decl(zs);
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#include "pow.h"
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cdev_decl(pow);
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#include "bell.h"
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cdev_decl(bell);
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cdev_decl(lkm);
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struct cdevsw cdevsw[] =
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{
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cdev_cn_init(1,cn), /* 0: virtual console */
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cdev_ctty_init(1,ctty), /* 1: controlling terminal */
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cdev_mm_init(1,mm), /* 2: /dev/{null,mem,kmem,...} */
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cdev_swap_init(1,sw), /* 3: /dev/drum (swap pseudo-device) */
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cdev_tty_init(NPTY,pts), /* 4: pseudo-tty slave */
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cdev_ptc_init(NPTY,ptc), /* 5: pseudo-tty master */
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cdev_log_init(1,log), /* 6: /dev/klog */
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cdev_notdef(), /* 7: */
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cdev_disk_init(NSD,sd), /* 8: SCSI disk */
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cdev_disk_init(NCD,cd), /* 9: SCSI cdrom */
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cdev_grf_init(NGRF,grf), /* 10: frame buffer */
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cdev_par_init(NPAR,par), /* 11: parallel interface */
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cdev_tty_init(NZS,zs), /* 12: zs serial */
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cdev_ite_init(NITE,ite), /* 13: console terminal emulator */
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cdev_gen_init(1,kbd), /* 14: /dev/kbd */
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cdev_gen_init(1,ms), /* 15: /dev/mouse */
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cdev_tty_init(NCOM,com), /* 16: serial port */
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cdev_gen_init(NAUDIO,audio), /* 17: /dev/adpcm /dev/pcm /dev/audio */
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#define fdopen Fdopen
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cdev_disk_init(NFD,fd), /* 18: floppy disk */
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#undef fdopen
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cdev_disk_init(NVND,vnd), /* 19: vnode disk driver */
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cdev_tape_init(NST,st), /* 20: SCSI tape */
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cdev_fd_init(1,filedesc), /* 21: file descriptor pseudo-dev */
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cdev_bpftun_init(NBPFILTER,bpf),/* 22: berkeley packet filter */
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cdev_sram_init(NSRAM,sram), /* 23: /dev/sram */
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cdev_lkm_init(NLKM,lkm), /* 24: loadable module driver */
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cdev_lkm_dummy(), /* 25 */
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cdev_lkm_dummy(), /* 26 */
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cdev_lkm_dummy(), /* 27 */
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cdev_lkm_dummy(), /* 28 */
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cdev_lkm_dummy(), /* 29 */
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cdev_lkm_dummy(), /* 30 */
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cdev_bpftun_init(NTUN,tun), /* 31: network tunnel */
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cdev_pow_init(NPOW,pow), /* 32: power switch device */
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cdev_bell_init(NBELL,bell), /* 33: opm bell device */
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cdev_disk_init(NCCD,ccd), /* 34: concatenated disk driver */
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cdev_ss_init(NSS,ss), /* 35: SCSI scanner */
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};
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int nchrdev = sizeof(cdevsw) / sizeof(cdevsw[0]);
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int mem_no = 2; /* major device number of memory special file */
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/*
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* Swapdev is a fake device implemented
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* in sw.c used only internally to get to swstrategy.
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* It cannot be provided to the users, because the
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* swstrategy routine munches the b_dev and b_blkno entries
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* before calling the appropriate driver. This would horribly
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* confuse, e.g. the hashing routines. Instead, /dev/drum is
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* provided as a character (raw) device.
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*/
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dev_t swapdev = makedev(3, 0);
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/*
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* Returns true if dev is /dev/mem or /dev/kmem.
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*/
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int
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iskmemdev(dev)
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dev_t dev;
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{
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return (major(dev) == mem_no && minor(dev) < 2);
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}
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/*
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* Returns true if dev is /dev/zero.
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*/
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int
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iszerodev(dev)
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dev_t dev;
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{
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return (major(dev) == mem_no && minor(dev) == 12);
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}
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static int chrtoblktbl[] = {
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/* CHR*/ /* BLK*/ /* CHR*/ /* BLK*/
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/* 0 */ NODEV, /* 1 */ NODEV,
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/* 2 */ NODEV, /* 3 */ 3,
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/* 4 */ NODEV, /* 5 */ NODEV,
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/* 6 */ NODEV, /* 7 */ NODEV,
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/* 8 */ 4, /* 9 */ 7,
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/* 10 */ NODEV, /* 11 */ NODEV,
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/* 12 */ NODEV, /* 13 */ NODEV,
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/* 14 */ NODEV, /* 15 */ NODEV,
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/* 16 */ NODEV, /* 17 */ NODEV,
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/* 18 */ 2, /* 19 */ 6,
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/* 20 */ 5, /* 21 */ NODEV,
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/* 22 */ NODEV, /* 23 */ NODEV,
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/* 24 */ NODEV, /* 25 */ NODEV,
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/* 26 */ NODEV, /* 27 */ NODEV,
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/* 28 */ NODEV, /* 29 */ NODEV,
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/* 30 */ NODEV, /* 31 */ NODEV,
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/* 32 */ NODEV, /* 33 */ NODEV,
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};
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/*
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* Convert a character device number to a block device number.
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*/
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dev_t
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chrtoblk(dev)
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dev_t dev;
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{
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int blkmaj;
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if (major(dev) >= nchrdev)
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return (NODEV);
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blkmaj = chrtoblktbl[major(dev)];
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if (blkmaj == NODEV)
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return (NODEV);
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return (makedev(blkmaj, minor(dev)));
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}
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/*
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* This entire table could be autoconfig()ed but that would mean that
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* the kernel's idea of the console would be out of sync with that of
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* the standalone boot. I think it best that they both use the same
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* known algorithm unless we see a pressing need otherwise.
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*/
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#include <dev/cons.h>
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#define itecnpollc nullcnpollc
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cons_decl(ite);
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struct consdev constab[] = {
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#if NITE > 0
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cons_init(ite),
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#endif
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{ 0 },
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};
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