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com_isapnp.c revision 1.28 
      1 /*	$NetBSD: com_isapnp.c,v 1.28 2008/03/14 15:09:11 cube 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 1.28 2008/03/14 15:09:11 cube 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 <sys/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 #include <dev/ic/comreg.h>
     62 
     63 struct com_isapnp_softc {
     64 	struct	com_softc sc_com;	/* real "com" softc */
     65 
     66 	/* ISAPnP-specific goo. */
     67 	void	*sc_ih;			/* interrupt handler */
     68 };
     69 
     70 int	com_isapnp_match(device_t, cfdata_t , void *);
     71 void	com_isapnp_attach(device_t, device_t, void *);
     72 
     73 CFATTACH_DECL_NEW(com_isapnp, sizeof(struct com_isapnp_softc),
     74     com_isapnp_match, com_isapnp_attach, NULL, NULL);
     75 
     76 int
     77 com_isapnp_match(device_t parent, cfdata_t match, void *aux)
     78 {
     79 	int pri, variant;
     80 
     81 	pri = isapnp_devmatch(aux, &isapnp_com_devinfo, &variant);
     82 	if (pri && variant > 0)
     83 		pri = 0;
     84 	return (pri);
     85 }
     86 
     87 void
     88 com_isapnp_attach(device_t parent, device_t self, void *aux)
     89 {
     90 	struct com_isapnp_softc *isc = device_private(self);
     91 	struct com_softc *sc = &isc->sc_com;
     92 	struct isapnp_attach_args *ipa = aux;
     93 
     94 	sc->sc_dev = self;
     95 
     96 	if (isapnp_config(ipa->ipa_iot, ipa->ipa_memt, ipa)) {
     97 		aprint_error_dev(self, "error in region allocation\n");
     98 		return;
     99 	}
    100 
    101 	COM_INIT_REGS(sc->sc_regs, ipa->ipa_iot, ipa->ipa_io[0].h,
    102 	    ipa->ipa_io[0].base);
    103 
    104 	/*
    105 	 * if the chip isn't something we recognise skip it.
    106 	 */
    107 	if (com_probe_subr(&sc->sc_regs) == 0)
    108 		return;
    109 
    110 	sc->sc_frequency = 115200 * 16; /* is that always right? */
    111 
    112 	com_attach_subr(sc);
    113 
    114 	isc->sc_ih = isa_intr_establish(ipa->ipa_ic, ipa->ipa_irq[0].num,
    115 	    ipa->ipa_irq[0].type, IPL_SERIAL, comintr, sc);
    116 }
    117