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opl_isa.c revision 1.14 
      1 /*	$NetBSD: opl_isa.c,v 1.14 2006/06/18 23:15:33 chap Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1999 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Lennart Augustsson.
      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: opl_isa.c,v 1.14 2006/06/18 23:15:33 chap Exp $");
     41 
     42 #include <sys/param.h>
     43 #include <sys/systm.h>
     44 #include <sys/kernel.h>
     45 #include <sys/errno.h>
     46 #include <sys/device.h>
     47 #include <sys/malloc.h>
     48 #include <sys/proc.h>
     49 #include <sys/conf.h>
     50 #include <sys/select.h>
     51 #include <sys/audioio.h>
     52 #include <sys/midiio.h>
     53 
     54 #include <machine/bus.h>
     55 
     56 #include <dev/audio_if.h>
     57 #include <dev/midi_if.h>
     58 
     59 #include <dev/ic/oplreg.h>
     60 #include <dev/ic/oplvar.h>
     61 
     62 #include <dev/isa/isavar.h>
     63 
     64 #define OPL_SIZE 4
     65 
     66 int	opl_isa_match(struct device *, struct cfdata *, void *);
     67 void	opl_isa_attach(struct device *, struct device *, void *);
     68 
     69 CFATTACH_DECL(opl_isa, sizeof(struct opl_softc),
     70     opl_isa_match, opl_isa_attach, NULL, NULL);
     71 
     72 int
     73 opl_isa_match(parent, match, aux)
     74 	struct device *parent;
     75 	struct cfdata *match;
     76 	void *aux;
     77 {
     78 	struct isa_attach_args *ia = aux;
     79 	bus_space_handle_t ioh;
     80 	int r;
     81 
     82 	if (ia->ia_nio < 1)
     83 		return (0);
     84 
     85 	if (ISA_DIRECT_CONFIG(ia))
     86 		return (0);
     87 
     88 	if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
     89 		return (0);
     90 
     91 	if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, OPL_SIZE, 0, &ioh))
     92 		return (0);
     93 	r = opl_match(ia->ia_iot, ioh, 0);
     94         bus_space_unmap(ia->ia_iot, ioh, OPL_SIZE);
     95 	if (r != 0) {
     96 		ia->ia_nio = 1;
     97 		ia->ia_io[0].ir_size = OPL_SIZE;
     98 
     99 		ia->ia_nirq = 0;
    100 		ia->ia_niomem = 0;
    101 		ia->ia_ndrq = 0;
    102 	}
    103 	return (r);
    104 }
    105 
    106 void
    107 opl_isa_attach(parent, self, aux)
    108 	struct device *parent;
    109 	struct device *self;
    110 	void *aux;
    111 {
    112 	struct opl_softc *sc = (struct opl_softc *)self;
    113 	struct isa_attach_args *ia = aux;
    114 
    115 	sc->iot = ia->ia_iot;
    116 
    117 	if (bus_space_map(sc->iot, ia->ia_io[0].ir_addr, OPL_SIZE,
    118 	    0, &sc->ioh)) {
    119 		printf("opl_isa_attach: bus_space_map failed\n");
    120 		return;
    121 	}
    122 	sc->offs = 0;
    123 
    124 	opl_attach(sc);
    125 }
    126