9448a01404
hardware/software interrupt mechanism for improved performance. Many odd protocols bugs also fixed.
114 lines
3.5 KiB
C
114 lines
3.5 KiB
C
/* $NetBSD: com_multi.c,v 1.1 1997/04/04 20:56:37 mycroft Exp $ */
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/*-
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* Copyright (c) 1993, 1994, 1995, 1996
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* Charles M. Hannum. All rights reserved.
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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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* @(#)com.c 7.5 (Berkeley) 5/16/91
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*/
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/*
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* COM driver, uses National Semiconductor NS16450/NS16550AF UART
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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/ioctl.h>
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#include <sys/select.h>
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#include <sys/tty.h>
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#include <sys/proc.h>
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#include <sys/user.h>
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#include <sys/conf.h>
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#include <sys/file.h>
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#include <sys/uio.h>
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#include <sys/kernel.h>
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#include <sys/syslog.h>
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#include <sys/types.h>
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#include <sys/device.h>
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#include <machine/intr.h>
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#include <machine/bus.h>
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#include <dev/isa/isavar.h>
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#include <dev/isa/comreg.h>
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#include <dev/isa/comvar.h>
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#include <dev/isa/com_multi.h>
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int com_multi_probe __P((struct device *, void *, void *));
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void com_multi_attach __P((struct device *, struct device *, void *));
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struct cfattach com_multi_ca = {
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sizeof(struct com_softc), com_multi_probe, com_multi_attach
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};
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int
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com_multi_probe(parent, match, aux)
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struct device *parent;
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void *match, *aux;
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{
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int iobase;
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struct cfdata *cf = match;
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struct commulti_attach_args *ca = aux;
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if (cf->cf_loc[0] != -1 && cf->cf_loc[0] != ca->ca_slave)
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return (0);
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iobase = ca->ca_iobase;
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/* if it's in use as console, it's there. */
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if (iobase == comconsaddr && !comconsattached)
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return 1;
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return comprobe1(ca->ca_iot, ca->ca_ioh, iobase);
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}
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void
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com_multi_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct com_softc *sc = (void *)self;
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struct commulti_attach_args *ca = aux;
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/*
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* We're living on a commulti.
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*/
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sc->sc_iot = ca->ca_iot;
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sc->sc_ioh = ca->ca_ioh;
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sc->sc_iobase = ca->ca_iobase;
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if (ca->ca_noien)
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sc->sc_hwflags |= COM_HW_NOIEN;
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com_attach_subr(sc);
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}
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