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com_isapnp.c revision 1.23 
      1 /*	$NetBSD: com_isapnp.c,v 1.23 2006/03/29 06:51:47 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1997 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Michael Graff <explorer (at) flame.org>.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #include <sys/cdefs.h>
     40 __KERNEL_RCSID(0, "$NetBSD: com_isapnp.c,v 1.23 2006/03/29 06:51:47 thorpej Exp $");
     41 
     42 #include <sys/param.h>
     43 #include <sys/systm.h>
     44 #include <sys/errno.h>
     45 #include <sys/ioctl.h>
     46 #include <sys/syslog.h>
     47 #include <sys/device.h>
     48 #include <sys/proc.h>
     49 #include <sys/termios.h>
     50 
     51 #include <machine/bus.h>
     52 
     53 #include <dev/isa/isavar.h>
     54 #include <dev/isa/isadmavar.h>
     55 
     56 #include <dev/isapnp/isapnpreg.h>
     57 #include <dev/isapnp/isapnpvar.h>
     58 #include <dev/isapnp/isapnpdevs.h>
     59 
     60 #include <dev/ic/comvar.h>
     61 
     62 struct com_isapnp_softc {
     63 	struct	com_softc sc_com;	/* real "com" softc */
     64 
     65 	/* ISAPnP-specific goo. */
     66 	void	*sc_ih;			/* interrupt handler */
     67 };
     68 
     69 int	com_isapnp_match(struct device *, struct cfdata *, void *);
     70 void	com_isapnp_attach(struct device *, struct device *, void *);
     71 
     72 CFATTACH_DECL(com_isapnp, sizeof(struct com_isapnp_softc),
     73     com_isapnp_match, com_isapnp_attach, NULL, NULL);
     74 
     75 int
     76 com_isapnp_match(parent, match, aux)
     77 	struct device *parent;
     78 	struct cfdata *match;
     79 	void *aux;
     80 {
     81 	int pri, variant;
     82 
     83 	pri = isapnp_devmatch(aux, &isapnp_com_devinfo, &variant);
     84 	if (pri && variant > 0)
     85 		pri = 0;
     86 	return (pri);
     87 }
     88 
     89 void
     90 com_isapnp_attach(parent, self, aux)
     91 	struct device *parent, *self;
     92 	void *aux;
     93 {
     94 	struct com_isapnp_softc *isc = device_private(self);
     95 	struct com_softc *sc = &isc->sc_com;
     96 	struct isapnp_attach_args *ipa = aux;
     97 
     98 	if (isapnp_config(ipa->ipa_iot, ipa->ipa_memt, ipa)) {
     99 		printf("%s: error in region allocation\n",
    100 		       sc->sc_dev.dv_xname);
    101 		return;
    102 	}
    103 
    104 	sc->sc_iot = ipa->ipa_iot;
    105 	sc->sc_iobase = ipa->ipa_io[0].base;
    106 	sc->sc_ioh = ipa->ipa_io[0].h;
    107 
    108 	/*
    109 	 * if the chip isn't something we recognise skip it.
    110 	 */
    111 	if (comprobe1(sc->sc_iot, sc->sc_ioh) == 0)
    112 		return;
    113 
    114 	sc->sc_frequency = 115200 * 16; /* is that always right? */
    115 
    116 	com_attach_subr(sc);
    117 
    118 	isc->sc_ih = isa_intr_establish(ipa->ipa_ic, ipa->ipa_irq[0].num,
    119 	    ipa->ipa_irq[0].type, IPL_SERIAL, comintr, sc);
    120 }
    121