NetBSD/sys/arch/arc/arc/conf.c

/*	$NetBSD: conf.c,v 1.21 2001/03/21 22:25:53 lukem Exp $	*/
/*	$OpenBSD: conf.c,v 1.27 1999/08/12 13:06:33 niklas Exp $ */

/*
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Ralph Campbell.
 *
 * 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 the University of
 *	California, Berkeley and its contributors.
 * 4. 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.
 *
 *	from: @(#)conf.c	8.2 (Berkeley) 11/14/93
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/buf.h>
#include <sys/ioctl.h>
#include <sys/proc.h>
#include <sys/vnode.h>
#include <sys/tty.h>
#include <sys/conf.h>

#define ARRAY_LENGTH(array)	(sizeof(array) / sizeof(array[0]))

/*
 *	Block devices.
 */

#include "sd.h"
bdev_decl(sd);
bdev_decl(sw);
#include "vnd.h"
bdev_decl(vnd);
#include "cd.h"
bdev_decl(cd);
#include "wd.h"
bdev_decl(wd);
#include "st.h"
bdev_decl(st);
#include "ccd.h"
bdev_decl(ccd);
#include "fdc.h"
bdev_decl(fd);
#include "md.h"
bdev_decl(md);
#include "raid.h"
bdev_decl(raid);

struct bdevsw	bdevsw[] =
{
	bdev_disk_init(NSD,sd),		/* 0: SCSI disk */
	bdev_swap_init(1,sw),		/* 1: should be here swap pseudo-dev */
	bdev_disk_init(NVND,vnd),	/* 2: vnode disk */
	bdev_disk_init(NCD,cd),		/* 3: SCSI CD-ROM */
	bdev_disk_init(NWD,wd),		/* 4: ST506/ESDI/IDE disk */
	bdev_tape_init(NST,st),		/* 5: SCSI tape */
	bdev_disk_init(NCCD,ccd),	/* 6: concatenated disk */
	bdev_disk_init(NFDC,fd),	/* 7: Floppy disk */
	bdev_disk_init(NMD,md),		/* 8: memory disk */
	bdev_disk_init(NRAID,raid),	/* 9: RAIDframe disk driver */
	bdev_notdef(),			/* 10: */
	bdev_notdef(),			/* 11: */
	bdev_notdef(),			/* 12: */
	bdev_notdef(),			/* 13: */
	bdev_notdef(),			/* 14: */
	bdev_notdef(),			/* 15: */
};

int	nblkdev = ARRAY_LENGTH(bdevsw);

/*
 *	Character devices.
 */

#include "i4b.h"
#include "i4bctl.h"
#include "i4btrc.h"
#include "i4brbch.h"
#include "i4btel.h"
cdev_decl(i4b);
cdev_decl(i4bctl);
cdev_decl(i4btrc);
cdev_decl(i4brbch);
cdev_decl(i4btel);

cdev_decl(cn);
cdev_decl(sw);
cdev_decl(ctty);
#define	mmread mmrw
#define	mmwrite mmrw
dev_type_read(mmrw);
cdev_decl(mm);
#include "pty.h"
#define	ptstty		ptytty
#define	ptsioctl	ptyioctl
cdev_decl(pts);
#define	ptctty		ptytty
#define	ptcioctl	ptyioctl
cdev_decl(ptc);
cdev_decl(log);
cdev_decl(fd);
cdev_decl(cd);
cdev_decl(sd);
cdev_decl(st);
cdev_decl(vnd);
#include "bpfilter.h"
cdev_decl(bpf);
#include "fdc.h"
bdev_decl(fd);
#include "pc.h"
cdev_decl(pc);
cdev_decl(opms);
#include "lpt.h"
cdev_decl(lpt);
#include "com.h"
cdev_decl(com);
cdev_decl(wd);
#include "scsibus.h"
cdev_decl(scsibus);
cdev_decl(md);
cdev_decl(ccd);
cdev_decl(raid);
#include "tun.h"
cdev_decl(tun);
#include "joy.h"
cdev_decl(joy);
#include "wsdisplay.h"
cdev_decl(wsdisplay);
#include "wsmux.h"
cdev_decl(wsmux);
#include "wskbd.h"
cdev_decl(wskbd);
#include "wsmouse.h"
cdev_decl(wsmouse);
#include "ipfilter.h"
cdev_decl(ipl);
#include "uk.h"
cdev_decl(uk);
#include "rnd.h"
#include "ss.h"
cdev_decl(ss);
#include "ch.h"
cdev_decl(ch);

struct cdevsw	cdevsw[] =
{
	cdev_cn_init(1,cn),		/* 0: virtual console */
	cdev_swap_init(1,sw),		/* 1: /dev/drum (swap pseudo-device) */
	cdev_ctty_init(1,ctty),		/* 2: controlling terminal */
	cdev_mm_init(1,mm),		/* 3: /dev/{null,mem,kmem,...} */
	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_fd_init(1,filedesc),	/* 7: file descriptor pseudo-dev */
	cdev_disk_init(NCD,cd),		/* 8: SCSI CD-ROM */
	cdev_disk_init(NSD,sd),		/* 9: SCSI disk */
	cdev_tape_init(NST,st),		/* 10: SCSI tape */
	cdev_disk_init(NVND,vnd),	/* 11: vnode disk */
	cdev_bpftun_init(NBPFILTER,bpf),/* 12: berkeley packet filter */
	cdev_disk_init(NFDC,fd),	/* 13: Floppy disk */
	cdev_pc_init(NPC,pc),		/* 14: builtin pc style console dev */
	cdev_mouse_init(NOPMS,opms),	/* 15: builtin PS2 style mouse */
	cdev_lpt_init(NLPT,lpt),	/* 16: Parallel printer interface */
	cdev_tty_init(NCOM,com),	/* 17: 16C450 serial interface */
	cdev_disk_init(NWD,wd),		/* 18: ST506/ESDI/IDE disk */
	cdev_scsibus_init(NSCSIBUS,scsibus), /* 19: SCSI bus */
	cdev_notdef(),			/* 20: */
	cdev_notdef(),			/* 21: */
	cdev_disk_init(NMD,md),		/* 22: memory disk */
	cdev_disk_init(NCCD,ccd),       /* 23: concatenated disk */
	cdev_disk_init(NRAID,raid),	/* 24: RAIDframe disk driver */
	cdev_bpftun_init(NTUN,tun),	/* 25: network tunnel */
	cdev_joy_init(NJOY,joy),	/* 26: joystick */
	cdev_wsdisplay_init(NWSDISPLAY,
			    wsdisplay), /* 27: frame buffers, etc. */
	cdev_mouse_init(NWSMUX, wsmux),	/* 28: ws multiplexor */
	cdev_mouse_init(NWSKBD, wskbd),	/* 29: keyboards */
	cdev_mouse_init(NWSMOUSE,
	    wsmouse),			/* 30: mice */
	cdev_ipf_init(NIPFILTER,ipl),	/* 31: IP filter log */
	cdev_uk_init(NUK,uk),		/* 32: unknown SCSI */
	cdev_rnd_init(NRND,rnd),	/* 33: random source pseudo-device */
	cdev_scanner_init(NSS,ss),	/* 34: SCSI scanner */
	cdev_notdef(),			/* 35: OpenBSD Kernel symbols device */
	cdev_ch_init(NCH,ch),		/* 36: SCSI autochanger */
	cdev_i4b_init(NI4B, i4b),	/* 37: i4b main device */
	cdev_i4bctl_init(NI4BCTL, i4bctl), /* 38: i4b control device */
	cdev_i4brbch_init(NI4BRBCH, i4brbch), /* 39: i4b raw b-channel access */
	cdev_i4btrc_init(NI4BTRC, i4btrc), /* 40: i4b trace device */
	cdev_i4btel_init(NI4BTEL, i4btel), /* 41: i4b phone device */
	cdev_notdef(),			/* 42: */
	cdev_notdef(),			/* 33: */
	cdev_notdef(),			/* 44: */
	cdev_notdef(),			/* 45: */
	cdev_notdef(),			/* 46: */
	cdev_notdef(),			/* 47: */
	cdev_notdef(),			/* 48: */
	cdev_notdef(),			/* 49: */
	cdev_notdef(),			/* 50: */
	cdev_notdef(),			/* 51: OpenBSD xfs comm. device */
};

int	nchrdev = ARRAY_LENGTH(cdevsw);

int	mem_no = 3; 	/* 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);

/*
 * Routine that identifies /dev/mem and /dev/kmem.
 */
int
iskmemdev(dev)
	dev_t dev;
{
	return (major(dev) == 3 && minor(dev) < 2);
}

/*
 * Returns true if def is /dev/zero
 */
int
iszerodev(dev)
	dev_t dev;
{
	return (major(dev) == 3 && minor(dev) == 12);
}


static 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 */		3,		/* cd */
	/* 9 */		0,		/* sd */
	/* 10 */	NODEV,
	/* 11 */	2,		/* vnd */
	/* 12 */	NODEV,
	/* 13 */	7,		/* fd */
	/* 14 */	NODEV,
	/* 15 */	NODEV,
	/* 16 */	NODEV,
	/* 17 */	NODEV,
	/* 18 */	4,		/* wd */
	/* 19 */	NODEV,
	/* 20 */	NODEV,
	/* 21 */	NODEV,
	/* 22 */	8,		/* md */
	/* 23 */	6,		/* ccd */
	/* 24 */	9,		/* raid */
	/* 25 */	NODEV,
	/* 26 */	NODEV,
	/* 27 */	NODEV,
	/* 28 */	NODEV,
	/* 29 */	NODEV,
	/* 30 */	NODEV,
	/* 31 */	NODEV,
	/* 32 */	NODEV,
	/* 33 */	NODEV,
	/* 34 */	NODEV,
	/* 35 */	NODEV,
};

/*
 * Routine to convert from character to block device number.
 */
dev_t
chrtoblk(dev)
	dev_t dev;
{
	int blkmaj;

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