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com_pnpbios.c revision 1.11 
      1 /* $NetBSD: com_pnpbios.c,v 1.11 2006/07/13 22:56:01 gdamore 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/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: com_pnpbios.c,v 1.11 2006/07/13 22:56:01 gdamore Exp $");
     30 
     31 #include <sys/param.h>
     32 #include <sys/systm.h>
     33 #include <sys/errno.h>
     34 #include <sys/ioctl.h>
     35 #include <sys/syslog.h>
     36 #include <sys/device.h>
     37 #include <sys/proc.h>
     38 #include <sys/termios.h>
     39 
     40 #include <machine/bus.h>
     41 
     42 #include <dev/isa/isavar.h>
     43 #include <dev/isa/isadmavar.h>
     44 
     45 #include <i386/pnpbios/pnpbiosvar.h>
     46 
     47 #include <dev/ic/comvar.h>
     48 
     49 struct com_pnpbios_softc {
     50 	struct	com_softc sc_com;
     51 	void	*sc_ih;
     52 };
     53 
     54 int com_pnpbios_match(struct device *, struct cfdata *, void *);
     55 void com_pnpbios_attach(struct device *, struct device *, void *);
     56 
     57 CFATTACH_DECL(com_pnpbios, sizeof(struct com_pnpbios_softc),
     58     com_pnpbios_match, com_pnpbios_attach, NULL, NULL);
     59 
     60 int
     61 com_pnpbios_match(parent, match, aux)
     62 	struct device *parent;
     63 	struct cfdata *match;
     64 	void *aux;
     65 {
     66 	struct pnpbiosdev_attach_args *aa = aux;
     67 
     68 	if (strcmp(aa->idstr, "PNP0500") &&
     69 	    strcmp(aa->idstr, "PNP0501") &&
     70 	    strcmp(aa->idstr, "PNP0510") &&
     71 	    strcmp(aa->idstr, "PNP0511"))
     72 		return (0);
     73 
     74 	return (1);
     75 }
     76 
     77 void
     78 com_pnpbios_attach(parent, self, aux)
     79 	struct device *parent, *self;
     80 	void *aux;
     81 {
     82 	struct com_pnpbios_softc *psc = (void *)self;
     83 	struct com_softc *sc = &psc->sc_com;
     84 	struct pnpbiosdev_attach_args *aa = aux;
     85 	bus_space_tag_t iot;
     86 	bus_space_handle_t ioh;
     87 	int iobase;
     88 
     89 	if (pnpbios_getiobase(aa->pbt, aa->resc, 0, &iot, &iobase)) {
     90 		printf(": can't get iobase\n");
     91 		return;
     92 	}
     93 
     94 	if ((!com_is_console(iot, iobase, &ioh)) &&
     95 	    pnpbios_io_map(aa->pbt, aa->resc, 0, &iot, &ioh)) {
     96 		printf(": can't map i/o space\n");
     97 		return;
     98 	}
     99 
    100 	COM_INIT_REGS(sc->sc_regs, iot, ioh, iobase);
    101 
    102 	printf("\n");
    103 	pnpbios_print_devres(self, aa);
    104 
    105 	printf("%s", self->dv_xname);
    106 
    107 	/*
    108 	 * if the chip isn't something we recognise skip it.
    109 	 */
    110 	if (com_probe_subr(&sc->sc_regs) == 0) {
    111 		printf(": com probe failed\n");
    112 		return;
    113 	}
    114 
    115 	sc->sc_frequency = 115200 * 16;
    116 
    117 	com_attach_subr(sc);
    118 
    119 	psc->sc_ih = pnpbios_intr_establish(aa->pbt, aa->resc, 0, IPL_SERIAL,
    120 					    comintr, sc);
    121 }
    122