The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/isa/com_isapnp.c

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    1 /*      $OpenBSD: com_isapnp.c,v 1.6 2022/04/06 18:59:28 naddy Exp $    */
    2 /*
    3  * Copyright (c) 1997 - 1999, Jason Downs.  All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 3. Neither the name(s) of the author(s) nor the name OpenBSD
   14  *    may be used to endorse or promote products derived from this software
   15  *    without specific prior written permission.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS
   18  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   20  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT,
   21  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   23  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   24  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  */
   29 /*-
   30  * Copyright (c) 1993, 1994, 1995, 1996
   31  *      Charles M. Hannum.  All rights reserved.
   32  * Copyright (c) 1991 The Regents of the University of California.
   33  * All rights reserved.
   34  *
   35  * Redistribution and use in source and binary forms, with or without
   36  * modification, are permitted provided that the following conditions
   37  * are met:
   38  * 1. Redistributions of source code must retain the above copyright
   39  *    notice, this list of conditions and the following disclaimer.
   40  * 2. Redistributions in binary form must reproduce the above copyright
   41  *    notice, this list of conditions and the following disclaimer in the
   42  *    documentation and/or other materials provided with the distribution.
   43  * 3. Neither the name of the University nor the names of its contributors
   44  *    may be used to endorse or promote products derived from this software
   45  *    without specific prior written permission.
   46  *
   47  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   48  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   49  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   50  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   51  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   52  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   53  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   54  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   55  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   56  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   57  * SUCH DAMAGE.
   58  *
   59  *      @(#)com.c       7.5 (Berkeley) 5/16/91
   60  */
   61 
   62 #include <sys/param.h>
   63 #include <sys/systm.h>
   64 #include <sys/tty.h>
   65 #include <sys/device.h>
   66 
   67 #include <machine/intr.h>
   68 #include <machine/bus.h>
   69 
   70 #include <dev/ic/comreg.h>
   71 #include <dev/ic/comvar.h>
   72 
   73 #include <dev/isa/isavar.h>
   74 
   75 int com_isapnp_probe(struct device *, void *, void *);
   76 void com_isapnp_attach(struct device *, struct device *, void *);
   77 
   78 const struct cfattach com_isapnp_ca = {
   79         sizeof(struct com_softc), com_isapnp_probe, com_isapnp_attach
   80 };
   81 
   82 int
   83 com_isapnp_probe(struct device *parent, void *match, void *aux)
   84 {
   85         struct isa_attach_args *ia = aux;
   86         bus_space_tag_t iot;
   87         bus_space_handle_t ioh;
   88         int iobase;
   89 
   90         iot = ia->ia_iot;
   91         iobase = ia->ia_iobase;
   92         ioh = ia->ia_ioh;
   93 
   94         /* if it's in use as console, it's there. */
   95         if (iobase == comconsaddr && !comconsattached)
   96                 return (1);
   97 
   98         return comprobe1(iot, ioh);
   99 }
  100 
  101 void
  102 com_isapnp_attach(struct device *parent, struct device *self, void *aux)
  103 {
  104         struct com_softc *sc = (void *)self;
  105         int iobase;
  106         int irq;
  107         bus_space_tag_t iot;
  108         bus_space_handle_t ioh;
  109         struct isa_attach_args *ia = aux;
  110 
  111         /*
  112          * XXX should be broken out into functions for isa attach and
  113          * XXX for commulti attach, with a helper function that contains
  114          * XXX most of the interesting stuff.
  115          */
  116         sc->sc_hwflags = 0;
  117         sc->sc_swflags = 0;
  118 
  119         /*
  120          * We're living on an isa.
  121          */
  122         iobase = ia->ia_iobase;
  123         iot = ia->ia_iot;
  124         /* No console support! */
  125         ioh = ia->ia_ioh;
  126 
  127         sc->sc_iot = iot;
  128         sc->sc_ioh = ioh;
  129         sc->sc_iobase = iobase;
  130         sc->sc_frequency = COM_FREQ;
  131 
  132         com_attach_subr(sc);
  133 
  134         irq = ia->ia_irq;
  135         if (irq != IRQUNK) {
  136                 sc->sc_ih = isa_intr_establish(ia->ia_ic, irq,
  137                         IST_EDGE, IPL_TTY, comintr, sc,
  138                         sc->sc_dev.dv_xname);
  139         }
  140 }

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