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com_pnpbios.c revision 1.2 
      1 /* $NetBSD: com_pnpbios.c,v 1.2 1999/11/14 02:15:50 thorpej Exp $ */
      2 /*
      3  * Copyright (c) 1999
      4  * 	Matthias Drochner.  All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions, and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     25  * SUCH DAMAGE.
     26  */
     27 
     28 #include <sys/param.h>
     29 #include <sys/systm.h>
     30 #include <sys/errno.h>
     31 #include <sys/ioctl.h>
     32 #include <sys/syslog.h>
     33 #include <sys/device.h>
     34 #include <sys/proc.h>
     35 #include <sys/termios.h>
     36 
     37 #include <machine/bus.h>
     38 
     39 #include <dev/isa/isavar.h>
     40 #include <dev/isa/isadmavar.h>
     41 
     42 #include <i386/pnpbios/pnpbiosvar.h>
     43 
     44 #include <dev/ic/comvar.h>
     45 
     46 struct com_pnpbios_softc {
     47 	struct	com_softc sc_com;
     48 	void	*sc_ih;
     49 };
     50 
     51 int com_pnpbios_match __P((struct device *, struct cfdata *, void *));
     52 void com_pnpbios_attach __P((struct device *, struct device *, void *));
     53 
     54 struct cfattach com_pnpbios_ca = {
     55 	sizeof(struct com_pnpbios_softc), com_pnpbios_match, com_pnpbios_attach
     56 };
     57 
     58 int
     59 com_pnpbios_match(parent, match, aux)
     60 	struct device *parent;
     61 	struct cfdata *match;
     62 	void *aux;
     63 {
     64 	struct pnpbiosdev_attach_args *aa = aux;
     65 
     66 	if (strcmp(aa->idstr, "PNP0500") &&
     67 	    strcmp(aa->idstr, "PNP0501") &&
     68 	    strcmp(aa->idstr, "PNP0511"))
     69 		return (0);
     70 
     71 	return (1);
     72 }
     73 
     74 void
     75 com_pnpbios_attach(parent, self, aux)
     76 	struct device *parent, *self;
     77 	void *aux;
     78 {
     79 	struct com_pnpbios_softc *psc = (void *)self;
     80 	struct com_softc *sc = &psc->sc_com;
     81 	struct pnpbiosdev_attach_args *aa = aux;
     82 	bus_space_tag_t iot;
     83 	int iobase;
     84 
     85 	if (pnpbios_getiobase(aa->pbt, aa->resc, 0, &iot, &iobase)) {
     86 		printf(": can't get iobase\n");
     87 		return;
     88 	}
     89 
     90 	if (com_is_console(iot, iobase, &sc->sc_ioh))
     91 		sc->sc_iot = iot;
     92 	else if (pnpbios_io_map(aa->pbt, aa->resc, 0,
     93 				&sc->sc_iot, &sc->sc_ioh)) {
     94 		printf(": can't map i/o space\n");
     95 		return;
     96 	}
     97 	sc->sc_iobase = iobase;
     98 
     99 	printf("\n");
    100 	pnpbios_print_devres(self, aa);
    101 
    102 	printf("%s", self->dv_xname);
    103 
    104 	/*
    105 	 * if the chip isn't something we recognise skip it.
    106 	 */
    107 	if (comprobe1(sc->sc_iot, sc->sc_ioh) == 0)
    108 		return;
    109 
    110 	sc->sc_frequency = 115200 * 16;
    111 
    112 	com_attach_subr(sc);
    113 
    114 	psc->sc_ih = pnpbios_intr_establish(aa->pbt, aa->resc, 0, IPL_SERIAL,
    115 					    comintr, sc);
    116 }
    117