text: /*	$OpenBSD: conf.c,v 1.48 2011/01/14 19:04:08 jasper Exp $	*/
  /*	$NetBSD: conf.c,v 1.41 1997/02/11 07:35:49 scottr Exp $	*/
  
  /*
   * Copyright (c) 1990 The Regents of the University of California.
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. Neither the name of the University nor the names of its contributors
   *    may be used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   */
  /*-
   * Derived a long time ago from
   *      @(#)conf.c	7.9 (Berkeley) 5/28/91
   */
  
  #include <sys/param.h>
  #include <sys/systm.h>
  #include <sys/buf.h>
  #include <sys/ioctl.h>
  #include <sys/tty.h>
  #include <sys/conf.h>
  #include <sys/vnode.h>
  #include <dev/cons.h>
  
  #include "st.h"
  #include "sd.h"
  #include "cd.h"
  #include "ch.h"
  #include "vnd.h"
  #include "ccd.h"
  #include "rd.h"
  
  struct bdevsw	bdevsw[] =
  {
  	bdev_notdef(),         		/* 0 */
  	bdev_notdef(),			/* 1 */
  	bdev_notdef(),         		/* 2 */
  	bdev_swap_init(1,sw),		/* 3: swap pseudo-device */
  	bdev_disk_init(NSD,sd),		/* 4: SCSI disk */
  	bdev_tape_init(NST,st),		/* 5: SCSI tape */
  	bdev_disk_init(NCD,cd),		/* 6: SCSI CD-ROM */
  	bdev_notdef(),        	 	/* 7 */
  	bdev_disk_init(NVND,vnd),	/* 8: vnode disk driver */
  	bdev_disk_init(NCCD,ccd),	/* 9: concatenated disk driver */
  	bdev_notdef(),        	 	/* 10 */
  	bdev_notdef(),        	 	/* 11 */
  	bdev_notdef(),        	 	/* 12 */
  	bdev_disk_init(NRD,rd),	 	/* 13: RAM disk -- for install */
  	bdev_lkm_dummy(),		/* 14 */
  	bdev_lkm_dummy(),		/* 15 */
  	bdev_lkm_dummy(),		/* 16 */
  	bdev_lkm_dummy(),		/* 17 */
  	bdev_lkm_dummy(),		/* 18 */
  	bdev_lkm_dummy(),		/* 19 */
  };
  int	nblkdev = nitems(bdevsw);
  
  #define mmread	mmrw
  #define mmwrite	mmrw
  cdev_decl(mm);
  #include "bio.h"
  #include "pty.h"
  #include "uk.h"
  cdev_decl(fd);
  #include "zsc.h"
  cdev_decl(zsc);
  #include "zstty.h"
  cdev_decl(zs);
  #include "bpfilter.h"
  #include "tun.h"
  #include "asc.h"
  cdev_decl(asc);
  #include "ksyms.h"
  #ifdef NNPFS
  #include <nnpfs/nnnpfs.h>
  cdev_decl(nnpfs_dev);
  #endif
  #include "wsdisplay.h"
  #include "wskbd.h"
  #include "wsmouse.h"
  #include "wsmux.h"
  
  #include "pf.h"
  
  #include "systrace.h"
  
  #include "vscsi.h"
  #include "pppx.h"
  
  struct cdevsw	cdevsw[] =
  {
  	cdev_cn_init(1,cn),		/* 0: virtual console */
  	cdev_ctty_init(1,ctty),		/* 1: controlling terminal */
  	cdev_mm_init(1,mm),		/* 2: /dev/{null,mem,kmem,...} */
  	cdev_notdef(),			/* 3 was /dev/drum */
  	cdev_tty_init(NPTY,pts),	/* 4: pseudo-tty slave */
  	cdev_ptc_init(NPTY,ptc),	/* 5: pseudo-tty master */
  	cdev_log_init(1,log),		/* 6: /dev/klog */
  	cdev_notdef(),			/* 7 */
  	cdev_notdef(),			/* 8 */
  	cdev_notdef(),			/* 9 */
  	cdev_notdef(),			/* 10 was GRF */
  	cdev_notdef(),			/* 11 was ITE */
  	cdev_tty_init(NZSTTY,zs),	/* 12: 2 mac serial ports -- BG*/
  	cdev_disk_init(NSD,sd),		/* 13: SCSI disk */
  	cdev_tape_init(NST,st),		/* 14: SCSI tape */
  	cdev_disk_init(NCD,cd),		/* 15: SCSI CD-ROM */
  	cdev_notdef(),			/* 16 */
  	cdev_ch_init(NCH,ch),		/* 17: SCSI autochanger */
          cdev_disk_init(NRD,rd),         /* 18: ramdisk device */
  	cdev_disk_init(NVND,vnd),	/* 19: vnode disk driver */
  	cdev_disk_init(NCCD,ccd),	/* 20: concatenated disk driver */
  	cdev_fd_init(1,filedesc),	/* 21: file descriptor pseudo-device */
  	cdev_bpf_init(NBPFILTER,bpf),	/* 22: Berkeley packet filter */
  	cdev_notdef(),			/* 23 was ADB */
  	cdev_tun_init(NTUN,tun),	/* 24: network tunnel */
  	cdev_lkm_init(NLKM,lkm),	/* 25: loadable module driver */
  	cdev_lkm_dummy(),		/* 26 */
  	cdev_lkm_dummy(),		/* 27 */
  	cdev_lkm_dummy(),		/* 28 */
  	cdev_lkm_dummy(),		/* 29 */
  	cdev_lkm_dummy(),		/* 30 */
  	cdev_lkm_dummy(),		/* 31 */
  	cdev_random_init(1,random),	/* 32: random data source */
  	cdev_notdef(),			/* 33 */
  	cdev_uk_init(NUK,uk),		/* 34: SCSI unknown */
  	cdev_pf_init(NPF,pf),		/* 35: packet filter */
  	cdev_audio_init(NASC,asc),      /* 36: ASC audio device */
  	cdev_ksyms_init(NKSYMS,ksyms),	/* 37: Kernel symbols device */
  	cdev_wsdisplay_init(NWSDISPLAY, wsdisplay), /* 38: displays */
  	cdev_mouse_init(NWSKBD, wskbd),	/* 39: keyboards */
  	cdev_mouse_init(NWSMOUSE, wsmouse), /* 40: mice */
  	cdev_mouse_init(NWSMUX, wsmux),	/* 41: ws multiplexor */
  	cdev_notdef(),			/* 42 */
  	cdev_notdef(),			/* 43 */
  	cdev_notdef(),			/* 44 */
  	cdev_notdef(),			/* 45 */
  	cdev_notdef(),			/* 46 */
  	cdev_notdef(),			/* 47 */
  	cdev_notdef(),			/* 48 */
  	cdev_bio_init(NBIO,bio),	/* 49: ioctl tunnel */
  	cdev_systrace_init(NSYSTRACE,systrace),	/* 50 system call tracing */
  #ifdef NNPFS
  	cdev_nnpfs_init(NNNPFS,nnpfs_dev),	/* 51: nnpfs communication device */
  #else
  	cdev_notdef(),			/* 51 */
  #endif
  	cdev_ptm_init(NPTY,ptm),	/* 52: pseudo-tty ptm device */
  	cdev_vscsi_init(NVSCSI,vscsi),	/* 53: vscsi */
  	cdev_disk_init(1,diskmap),	/* 54: disk mapper */
  	cdev_pppx_init(NPPPX,pppx),	/* 55: pppx */
  };
  int	nchrdev = nitems(cdevsw);
  
  int	mem_no = 2; 	/* major device number of memory special file */
  
  /*
   * Swapdev is a fake device implemented
   * in sw.c used only internally to get to swstrategy.
   * It cannot be provided to the users, because the
   * swstrategy routine munches the b_dev and b_blkno entries
   * before calling the appropriate driver.  This would horribly
   * confuse, e.g. the hashing routines. Instead, /dev/drum is
   * provided as a character (raw) device.
   */
  dev_t	swapdev = makedev(3, 0);
  
  /*
   * Returns true if dev is /dev/mem or /dev/kmem.
   */
  int
  iskmemdev(dev)
  	dev_t	dev;
  {
  
  	return (major(dev) == mem_no && minor(dev) < 2);
  }
  
  /*
   * Returns true if dev is /dev/zero.
   */
  int
  iszerodev(dev)
  	dev_t	dev;
  {
  
  	return (major(dev) == mem_no && minor(dev) == 12);
  }
  
  dev_t
  getnulldev()
  {
  	return makedev(mem_no, 2);
  }
  
  int chrtoblktbl[] = {
  	/* XXXX This needs to be dynamic for LKMs. */
  	/*VCHR*/	/*VBLK*/
  	/*  0 */	NODEV,
  	/*  1 */	NODEV,
  	/*  2 */	NODEV,
  	/*  3 */	NODEV,
  	/*  4 */	NODEV,
  	/*  5 */	NODEV,
  	/*  6 */	NODEV,
  	/*  7 */	NODEV,
  	/*  8 */	NODEV,
  	/*  9 */	NODEV,
  	/* 10 */	NODEV,
  	/* 11 */	NODEV,
  	/* 12 */	NODEV,
  	/* 13 */	4,		/* sd */
  	/* 14 */	5,		/* st */
  	/* 15 */	6,		/* cd */
  	/* 16 */	NODEV,
  	/* 17 */	NODEV,
  	/* 18 */	13,		/* rd */
  	/* 19 */	8,		/* vnd */
  	/* 20 */	9,		/* ccd */
  };
  int nchrtoblktbl = nitems(chrtoblktbl);
  
  cons_decl(ws);
  #define zscnpollc	nullcnpollc
  cons_decl(zs);
  
  struct	consdev constab[] = {
  #if NWSDISPLAY > 0
  	cons_init(ws),
  #endif
  #if NZSTTY > 0
  	cons_init(zs),
  #endif
  	{ 0 },
  };
  