/*
 * Copyright (c) 1994 Charles Hannum.  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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by Charles Hannum.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 *
 *	$Id: conf.c,v 1.45 1994/06/14 19:47:51 mycroft Exp $
 */

#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>

int	rawread		__P((dev_t, struct uio *, int));
int	rawwrite	__P((dev_t, struct uio *, int));
void	swstrategy	__P((struct buf *));
int	ttselect	__P((dev_t, int, struct proc *));

#ifndef LKM
#define	lkmenodev	enodev
#else
int	lkmenodev();
#endif

#define	dev_type_open(n)	int n __P((dev_t, int, int, struct proc *))
#define	dev_type_close(n)	int n __P((dev_t, int, int, struct proc *))
#define	dev_type_strategy(n)	void n __P((struct buf *))
#define	dev_type_ioctl(n) \
	int n __P((dev_t, int, caddr_t, int, struct proc *))

/* bdevsw-specific types */
#define	dev_type_dump(n)	int n()
#define	dev_type_size(n)	int n __P((dev_t))

#define	dev_decl(n,t)	__CONCAT(dev_type_,t)(__CONCAT(n,t))
#define	dev_init(c,n,t) \
	((c) > 0 ? __CONCAT(n,t) : (__CONCAT(dev_type_,t)((*))) enxio)

/* bdevsw-specific initializations */
#define	dev_size_init(c,n)	(c > 0 ? __CONCAT(n,size) : 0)

#define	bdev_decl(n) \
	dev_decl(n,open); dev_decl(n,close); dev_decl(n,strategy); \
	dev_decl(n,ioctl); dev_decl(n,dump); dev_decl(n,size)

#define	bdev_disk_init(c,n) { \
	dev_init(c,n,open), dev_init(c,n,close), \
	dev_init(c,n,strategy), dev_init(c,n,ioctl), \
	dev_init(c,n,dump), dev_size_init(c,n), 0 }

#define	bdev_tape_init(c,n) { \
	dev_init(c,n,open), dev_init(c,n,close), \
	dev_init(c,n,strategy), dev_init(c,n,ioctl), \
	dev_init(c,n,dump), 0, B_TAPE }

#define	bdev_swap_init() { \
	(dev_type_open((*))) enodev, (dev_type_close((*))) enodev, \
	swstrategy, (dev_type_ioctl((*))) enodev, \
	(dev_type_dump((*))) enodev, 0, 0 }

#define	bdev_lkm_dummy() { \
	(dev_type_open((*))) lkmenodev, (dev_type_close((*))) enodev, \
	(dev_type_strategy((*))) enodev, (dev_type_ioctl((*))) enodev, \
	(dev_type_dump((*))) enodev, 0, 0 }

#define	bdev_notdef() { \
	(dev_type_open((*))) enodev, (dev_type_close((*))) enodev, \
	(dev_type_strategy((*))) enodev, (dev_type_ioctl((*))) enodev, \
	(dev_type_dump((*))) enodev, 0, 0 }

#include "wd.h"
#include "fd.h"
#include "wt.h"
#include "sd.h"
#include "st.h"
#include "cd.h"
#include "mcd.h"
#include "vn.h"

bdev_decl(wd);
#define	fdopen	Fdopen	/* conflicts with fdopen() in kern_descrip.c */
bdev_decl(fd);
#undef	fdopen
bdev_decl(wt);
bdev_decl(sd);
bdev_decl(st);
bdev_decl(cd);
bdev_decl(mcd);
bdev_decl(vn);

struct bdevsw	bdevsw[] =
{
	bdev_disk_init(NWD,wd),		/* 0: ST506/ESDI/IDE disk */
	bdev_swap_init(),		/* 1: swap pseudo-device */
#define	fdopen	Fdopen
	bdev_disk_init(NFD,fd),		/* 2: floppy diskette */
#undef	fdopen
	bdev_tape_init(NWT,wt),		/* 3: QIC-02/QIC-36 tape */
	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_disk_init(NMCD,mcd),	/* 7: Mitsumi CD-ROM */
	bdev_lkm_dummy(), /* 8 */
	bdev_lkm_dummy(), /* 9 */
	bdev_lkm_dummy(), /* 10 */
	bdev_lkm_dummy(), /* 11 */
	bdev_lkm_dummy(), /* 12 */
	bdev_lkm_dummy(), /* 13 */
	bdev_disk_init(NVN,vn),		/* 14: vnode disk driver */
};
int	nblkdev = sizeof(bdevsw) / sizeof(bdevsw[0]);

/* cdevsw-specific types */
#define	dev_type_read(n)	int n __P((dev_t, struct uio *, int))
#define	dev_type_write(n)	int n __P((dev_t, struct uio *, int))
#define	dev_type_stop(n)	int n __P((struct tty *, int))
#define	dev_type_reset(n)	int n __P((int))
#define	dev_type_select(n)	int n __P((dev_t, int, struct proc *))
#define	dev_type_mmap(n)	int n __P(())

#define	cdev_decl(n) \
	dev_decl(n,open); dev_decl(n,close); dev_decl(n,read); \
	dev_decl(n,write); dev_decl(n,ioctl); dev_decl(n,stop); \
	dev_decl(n,reset); dev_decl(n,select); dev_decl(n,mmap); \
	dev_decl(n,strategy); extern struct tty *__CONCAT(n,_tty)[]

#define	dev_tty_init(c,n)	(c > 0 ? __CONCAT(n,_tty) : 0)

/* open, close, read, write, ioctl, strategy */
#define	cdev_disk_init(c,n) { \
	dev_init(c,n,open), dev_init(c,n,close), rawread, rawwrite, \
	dev_init(c,n,ioctl), (dev_type_stop((*))) enodev, \
	(dev_type_reset((*))) nullop, 0, seltrue, (dev_type_mmap((*))) enodev, \
	dev_init(c,n,strategy) }

/* open, close, read, write, ioctl, strategy */
#define	cdev_tape_init(c,n) { \
	dev_init(c,n,open), dev_init(c,n,close), rawread, rawwrite, \
	dev_init(c,n,ioctl), (dev_type_stop((*))) enodev, \
	(dev_type_reset((*))) nullop, 0, seltrue, (dev_type_mmap((*))) enodev, \
	dev_init(c,n,strategy) }

/* open, close, read, write, ioctl, stop, tty */
#define	cdev_tty_init(c,n) { \
	dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \
	dev_init(c,n,write), dev_init(c,n,ioctl), dev_init(c,n,stop), \
	(dev_type_reset((*))) nullop, dev_tty_init(c,n), ttselect, \
	(dev_type_mmap((*))) enodev, 0 }

/* open, close, read, ioctl, select */
#define	cdev_mouse_init(c,n) { \
	dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \
	(dev_type_write((*))) enodev, dev_init(c,n,ioctl), \
	(dev_type_stop((*))) enodev, (dev_type_reset((*))) nullop, 0, \
	dev_init(c,n,select), (dev_type_mmap((*))) enodev, 0 }

#define	cdev_lkm_dummy() { \
	(dev_type_open((*))) lkmenodev, (dev_type_close((*))) enodev, \
	(dev_type_read((*))) enodev, (dev_type_write((*))) enodev, \
	(dev_type_ioctl((*))) enodev, (dev_type_stop((*))) enodev, \
	(dev_type_reset((*))) nullop, 0, seltrue, \
	(dev_type_mmap((*))) enodev, 0 }

#define	cdev_notdef() { \
	(dev_type_open((*))) enodev, (dev_type_close((*))) enodev, \
	(dev_type_read((*))) enodev, (dev_type_write((*))) enodev, \
	(dev_type_ioctl((*))) enodev, (dev_type_stop((*))) enodev, \
	(dev_type_reset((*))) nullop, 0, seltrue, \
	(dev_type_mmap((*))) enodev, 0 }

cdev_decl(cn);
/* open, close, read, write, ioctl, select -- XXX should be a tty */
#define	cdev_cn_init(c,n) { \
	dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \
	dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) nullop, \
	(dev_type_reset((*))) nullop, 0, dev_init(c,n,select), \
	(dev_type_mmap((*))) enodev, 0 }

cdev_decl(ctty);
/* open, read, write, ioctl, select -- XXX should be a tty */
#define cdev_ctty_init(c,n) { \
	dev_init(c,n,open), (dev_type_close((*))) nullop, dev_init(c,n,read), \
	dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) nullop, \
	(dev_type_reset((*))) nullop, 0, dev_init(c,n,select), \
	(dev_type_mmap((*))) enodev, 0 }

#define	mmread	mmrw
#define	mmwrite	mmrw
cdev_decl(mm);
/* open, close, read, write, mmap */
#define cdev_mm_init(c,n) { \
	dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \
	dev_init(c,n,write), (dev_type_ioctl((*))) enodev, \
	(dev_type_stop((*))) enodev, (dev_type_reset((*))) nullop, 0, \
	seltrue, dev_init(c,n,mmap), 0 }

/* read, write, strategy */
#define cdev_swap_init(c,n) { \
	(dev_type_open((*))) nullop, (dev_type_close((*))) nullop, rawread, \
	rawwrite, (dev_type_ioctl((*))) enodev, (dev_type_stop((*))) enodev, \
	(dev_type_reset((*))) nullop, 0, (dev_type_select((*))) enodev, \
	(dev_type_mmap((*))) enodev, dev_init(c,n,strategy) }

#include "pty.h"
#define	pts_tty		pt_tty
#define	ptsioctl	ptyioctl
cdev_decl(pts);
#define	ptc_tty		pt_tty
#define	ptcioctl	ptyioctl
cdev_decl(ptc);

/* open, close, read, write, ioctl, tty, select */
#define cdev_ptc_init(c,n) { \
	dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \
	dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) nullop, \
	(dev_type_reset((*))) nullop, dev_tty_init(c,n), dev_init(c,n,select), \
	(dev_type_mmap((*))) enodev, 0 }

cdev_decl(log);
/* open, close, read, ioctl, select -- XXX should be a generic device */
#define cdev_log_init(c,n) { \
	dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \
	(dev_type_write((*))) enodev, dev_init(c,n,ioctl), \
	(dev_type_stop((*))) enodev, (dev_type_reset((*))) nullop, 0, \
	dev_init(c,n,select), (dev_type_mmap((*))) enodev, 0 }

cdev_decl(fd);
/* open */
#define cdev_fd_init(c,n) { \
	dev_init(c,n,open), (dev_type_close((*))) enodev, \
	(dev_type_read((*))) enodev, (dev_type_write((*))) enodev, \
	(dev_type_ioctl((*))) enodev, (dev_type_stop((*))) enodev, \
	(dev_type_reset((*))) nullop, 0, (dev_type_select((*))) enodev, \
	(dev_type_mmap((*))) enodev, 0 }

#include "bpfilter.h"
cdev_decl(bpf);
/* open, close, read, write, ioctl, select -- XXX should be generic device */
#define cdev_bpf_init(c,n) { \
	dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \
	dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) enodev, \
	(dev_type_reset((*))) nullop, 0, dev_init(c,n,select), \
	(dev_type_mmap((*))) enodev, 0 }

#include "tun.h"
cdev_decl(tun);
/* open, close, read, write, ioctl, select -- XXX should be generic device */
#define cdev_tun_init(c,n) { \
	dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \
	dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) enodev, \
	(dev_type_reset((*))) nullop, 0, dev_init(c,n,select), \
	(dev_type_mmap((*))) enodev, 0 }

#ifdef LKM
#define	NLKM	1
#else
#define	NLKM	0
#endif
cdev_decl(lkm);
/* open, close, ioctl */
#define	cdev_lkm_init(c,n) { \
	dev_init(c,n,open), dev_init(c,n,close), (dev_type_read((*))) enodev, \
	(dev_type_write((*))) enodev, dev_init(c,n,ioctl), \
	(dev_type_stop((*))) enodev, (dev_type_reset((*))) nullop, 0, \
	(dev_type_select((*))) enodev, (dev_type_mmap((*))) enodev, 0 }

#include "ch.h"
cdev_decl(ch);
/* open, close, ioctl */
#define	cdev_ch_init(c,n) { \
	dev_init(c,n,open), dev_init(c,n,close), (dev_type_read((*))) enodev, \
	(dev_type_write((*))) enodev, dev_init(c,n,ioctl), \
	(dev_type_stop((*))) enodev, (dev_type_reset((*))) nullop, 0, \
	(dev_type_select((*))) enodev, (dev_type_mmap((*))) enodev, 0 }

cdev_decl(wd);
cdev_decl(fd);
cdev_decl(wt);
cdev_decl(sd);
cdev_decl(st);
cdev_decl(cd);
cdev_decl(mcd);
cdev_decl(vn);

#include "pc.h"
#include "vt.h"
cdev_decl(pc);
/* open, close, read, write, ioctl, tty, mmap */
#define cdev_pc_init(c,n) { \
	dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \
	dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) nullop, \
	(dev_type_reset((*))) nullop, dev_tty_init(c,n), ttselect, \
	dev_init(c,n,mmap), 0 }

#include "lpt.h"
cdev_decl(lpt);
/* open, close, write, ioctl */
#define	cdev_lpt_init(c,n) { \
	dev_init(c,n,open), dev_init(c,n,close), (dev_type_read((*))) enodev, \
	dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) enodev, \
	(dev_type_reset((*))) nullop, 0, seltrue, \
	(dev_type_mmap((*))) enodev, 0 }

#include "speaker.h"
cdev_decl(spkr);
/* open, close, write, ioctl */
#define	cdev_spkr_init(c,n) { \
	dev_init(c,n,open), dev_init(c,n,close), (dev_type_read((*))) enodev, \
	dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) enodev, \
	(dev_type_reset((*))) nullop, 0, seltrue, \
	(dev_type_mmap((*))) enodev, 0 }

#include "sb.h"
cdev_decl(audio);
/* open, close, read, write, ioctl */
#define cdev_audio_init(c,n) { \
	dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \
	dev_init(c,n,write), dev_init(c,n,ioctl), (dev_type_stop((*))) enodev, \
	(dev_type_reset((*))) nullop, 0, seltrue, \
	(dev_type_mmap((*))) enodev, 0 }

#include "com.h"
#include "cy.h"
#include "mms.h"
#include "lms.h"
#include "pms.h"

cdev_decl(com);
cdev_decl(cy);
cdev_decl(mms);
cdev_decl(lms);
cdev_decl(pms);

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_disk_init(NWD,wd),		/* 3: ST506/ESDI/IDE disk */
	cdev_swap_init(1,sw),		/* 4: /dev/drum (swap pseudo-device) */
	cdev_tty_init(NPTY,pts),	/* 5: pseudo-tty slave */
	cdev_ptc_init(NPTY,ptc),	/* 6: pseudo-tty master */
	cdev_log_init(1,log),		/* 7: /dev/klog */
	cdev_tty_init(NCOM,com),	/* 8: serial port */
#define	fdopen	Fdopen
	cdev_disk_init(NFD,fd),		/* 9: floppy diskette */
#undef	fdopen
	cdev_tape_init(NWT,wt),		/* 10: QIC-02/QIC-36 tape */
	cdev_notdef(),			/* 11: unused */
	cdev_pc_init(NPC + NVT,pc),	/* 12: PC console */
	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_lpt_init(NLPT,lpt),	/* 16: parallel printer */
	cdev_ch_init(NCH,ch),		/* 17: SCSI autochanger */
	cdev_notdef(),			/* 18: unused */
	cdev_notdef(),			/* 19: unused */
	cdev_notdef(),			/* 20: unused */
	cdev_notdef(),			/* 21: unused */
	cdev_fd_init(1,fd),		/* 22: file descriptor pseudo-device */
	cdev_bpf_init(NBPFILTER,bpf),	/* 23: Berkeley packet filter */
	cdev_notdef(),			/* 24: unused */
	cdev_notdef(),			/* 25: unused */
	cdev_notdef(),			/* 26: unused */
	cdev_spkr_init(NSPEAKER,spkr),	/* 27: PC speaker */
	cdev_lkm_init(NLKM,lkm),	/* 28: loadable module driver */
	cdev_lkm_dummy(), /* 29 */
	cdev_lkm_dummy(), /* 30 */
	cdev_lkm_dummy(), /* 31 */
	cdev_lkm_dummy(), /* 32 */
	cdev_lkm_dummy(), /* 33 */
	cdev_lkm_dummy(), /* 34 */
	cdev_mouse_init(NMMS,mms),	/* 35: Microsoft mouse */
	cdev_mouse_init(NLMS,lms),	/* 36: Logitech mouse */
	cdev_mouse_init(NPMS,pms),	/* 37: PS/2 mouse */
	cdev_tty_init(NCY,cy),		/* 38: Cyclom serial port */
	cdev_disk_init(NMCD,mcd),	/* 39: Mitsumi CD-ROM */
	cdev_tun_init(NTUN,tun),	/* 40: network tunnel */
	cdev_disk_init(NVN,vn),		/* 41: vnode disk driver */
	cdev_audio_init(NSB,audio),	/* 42: generic audio I/O */
};
int	nchrdev = sizeof(cdevsw) / sizeof(cdevsw[0]);

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(1, 0);

/*
 * Returns true if dev is /dev/mem or /dev/kmem.
 */
iskmemdev(dev)
	dev_t dev;
{

	return (major(dev) == mem_no && minor(dev) < 2);
}

/*
 * Returns true if dev is /dev/zero.
 */
iszerodev(dev)
	dev_t dev;
{

	return (major(dev) == mem_no && minor(dev) == 12);
}

/*
 * Returns true if dev is a disk device.
 */
isdisk(dev, type)
	dev_t dev;
	int type;
{

	/* XXXX This needs to be dynamic for LKMs. */
	switch (major(dev)) {
	case 0:
	case 2:
	case 4:
	case 6:
	case 7:
	case 14:
		return (type == VBLK);
	case 3:
	case 9:
	case 13:
	case 15:
	case 39:
	case 41:
		return (type == VCHR);
	default:
		return (0);
	}
	/* NOTREACHED */
}

static int chrtoblktbl[] = {
	/* XXXX This needs to be dynamic for LKMs. */
	/*VCHR*/	/*VBLK*/
	/*  0 */	NODEV,
	/*  1 */	NODEV,
	/*  2 */	NODEV,
	/*  3 */	0,
	/*  4 */	NODEV,
	/*  5 */	NODEV,
	/*  6 */	NODEV,
	/*  7 */	NODEV,
	/*  8 */	NODEV,
	/*  9 */	2,
	/* 10 */	3,
	/* 11 */	NODEV,
	/* 12 */	NODEV,
	/* 13 */	4,
	/* 14 */	5,
	/* 15 */	6,
	/* 16 */	NODEV,
	/* 17 */	NODEV,
	/* 18 */	NODEV,
	/* 19 */	NODEV,
	/* 20 */	NODEV,
	/* 21 */	NODEV,
	/* 22 */	NODEV,
	/* 23 */	NODEV,
	/* 24 */	NODEV,
	/* 25 */	NODEV,
	/* 26 */	NODEV,
	/* 27 */	NODEV,
	/* 28 */	NODEV,
	/* 29 */	NODEV,
	/* 30 */	NODEV,
	/* 31 */	NODEV,
	/* 32 */	NODEV,
	/* 33 */	NODEV,
	/* 34 */	NODEV,
	/* 35 */	NODEV,
	/* 36 */	NODEV,
	/* 37 */	NODEV,
	/* 38 */	NODEV,
	/* 39 */	7,
	/* 40 */	NODEV,
	/* 41 */	14,
	/* 42 */	NODEV,
	/* 43 */	NODEV,
	/* 44 */	NODEV,
	/* 45 */	NODEV,
	/* 46 */	NODEV,
	/* 47 */	NODEV,
	/* 48 */	NODEV,
	/* 49 */	NODEV,
};

/*
 * Convert a character device number to a block device number.
 */
chrtoblk(dev)
	dev_t dev;
{
	int blkmaj;

	if (major(dev) >= nchrdev)
		return (NODEV);
	blkmaj = chrtoblktbl[major(dev)];
	if (blkmaj == NODEV)
		return (NODEV);
	return (makedev(blkmaj, minor(dev)));
}

/*
 * constab is the console configuration for this type of machine.
 * XXX - it should probably all be configured automatically.
 */
#include <dev/cons.h>

/* XXX - all this could be autoconfig()ed */
#if NPC > 0 || NVT > 0
int pccnprobe(), pccninit(), pccngetc(), pccnputc();
#endif
#if NCOM > 0
int comcnprobe(), comcninit(), comcngetc(), comcnputc();
#endif

struct	consdev constab[] = {
#if NPC > 0 || NVT > 0
	{ pccnprobe,	pccninit,	pccngetc,	pccnputc },
#endif
#if NCOM > 0
	{ comcnprobe,	comcninit,	comcngetc,	comcnputc },
#endif
	{ 0 },
};