NetBSD-5.0.2/sys/dev/isa/com_multi.c

/*	$NetBSD: com_multi.c,v 1.27 2008/04/28 20:23:52 martin Exp $	*/

/*-
 * Copyright (c) 1998 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Charles M. Hannum.
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
 */

/*-
 * Copyright (c) 1991 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.
 *
 *	@(#)com.c	7.5 (Berkeley) 5/16/91
 */

/*
 * COM driver, uses National Semiconductor NS16450/NS16550AF UART
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: com_multi.c,v 1.27 2008/04/28 20:23:52 martin Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/ioctl.h>
#include <sys/select.h>
#include <sys/tty.h>
#include <sys/proc.h>
#include <sys/user.h>
#include <sys/conf.h>
#include <sys/file.h>
#include <sys/uio.h>
#include <sys/kernel.h>
#include <sys/syslog.h>
#include <sys/device.h>

#include <sys/intr.h>
#include <sys/bus.h>

#include <dev/ic/comreg.h>
#include <dev/ic/comvar.h>

#include <dev/isa/isavar.h>
#include <dev/isa/com_multi.h>

#include "locators.h"

int com_multi_probe(device_t, cfdata_t , void *);
void com_multi_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(com_multi, sizeof(struct com_softc),
    com_multi_probe, com_multi_attach, NULL, NULL);

int
com_multi_probe(device_t parent, cfdata_t match, void *aux)
{
	int iobase;
	struct cfdata *cf = match;
	struct commulti_attach_args *ca = aux;

	if (cf->cf_loc[COMMULTICF_SLAVE] != COMMULTICF_SLAVE_DEFAULT &&
	    cf->cf_loc[COMMULTICF_SLAVE] != ca->ca_slave)
		return (0);

	iobase = ca->ca_iobase;

	/* if it's in use as console, it's there. */
	if (com_is_console(ca->ca_iot, iobase, 0))
		return 1;

	return comprobe1(ca->ca_iot, ca->ca_ioh);
}

void
com_multi_attach(device_t parent, device_t self, void *aux)
{
	struct com_softc *sc = device_private(self);
	struct commulti_attach_args *ca = aux;

	sc->sc_dev = self;

	/*
	 * We're living on a commulti.
	 */
	COM_INIT_REGS(sc->sc_regs, ca->ca_iot, ca->ca_ioh, ca->ca_iobase);
	sc->sc_frequency = 115200 * 16;

	if (ca->ca_noien)
		sc->sc_hwflags |= COM_HW_NOIEN;

	com_attach_subr(sc);
}