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Annotation of sys/dev/isa/opl_isa.c, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: opl_isa.c,v 1.4 2005/11/21 18:16:40 millert Exp $     */
        !             2: /*     $NetBSD: opl_isa.c,v 1.1 1998/08/26 13:33:59 augustss Exp $     */
        !             3:
        !             4: /*
        !             5:  * Copyright (c) 1998 The NetBSD Foundation, Inc.
        !             6:  * All rights reserved.
        !             7:  *
        !             8:  * Author: 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/param.h>
        !            40: #include <sys/systm.h>
        !            41: #include <sys/kernel.h>
        !            42: #include <sys/errno.h>
        !            43: #include <sys/device.h>
        !            44: #include <sys/malloc.h>
        !            45: #include <sys/proc.h>
        !            46: #include <sys/conf.h>
        !            47: #include <sys/selinfo.h>
        !            48: #include <sys/audioio.h>
        !            49: #include <sys/midiio.h>
        !            50:
        !            51: #include <machine/bus.h>
        !            52:
        !            53: #include <dev/audio_if.h>
        !            54: #include <dev/midi_if.h>
        !            55:
        !            56: #include <dev/ic/oplreg.h>
        !            57: #include <dev/ic/oplvar.h>
        !            58:
        !            59: #include <dev/isa/isavar.h>
        !            60:
        !            61: #define OPL_SIZE 4
        !            62:
        !            63: int    opl_isa_match(struct device *, void *, void *);
        !            64: void   opl_isa_attach(struct device *, struct device *, void *);
        !            65:
        !            66: struct cfattach opl_isa_ca = {
        !            67:        sizeof (struct opl_softc), opl_isa_match, opl_isa_attach
        !            68: };
        !            69:
        !            70: int
        !            71: opl_isa_match(parent, match, aux)
        !            72:        struct device *parent;
        !            73:        void *match;
        !            74:        void *aux;
        !            75: {
        !            76:        struct isa_attach_args *ia = aux;
        !            77:        struct opl_softc sc;
        !            78:        int r;
        !            79:
        !            80:        memset(&sc, 0, sizeof sc);
        !            81:        sc.iot = ia->ia_iot;
        !            82:        if (bus_space_map(sc.iot, ia->ia_iobase, OPL_SIZE, 0, &sc.ioh))
        !            83:                return (0);
        !            84:        r = opl_find(&sc);
        !            85:         bus_space_unmap(sc.iot, sc.ioh, OPL_SIZE);
        !            86:        return (r);
        !            87: }
        !            88:
        !            89: void
        !            90: opl_isa_attach(parent, self, aux)
        !            91:        struct device *parent;
        !            92:        struct device *self;
        !            93:        void *aux;
        !            94: {
        !            95:        struct opl_softc *sc = (struct opl_softc *)self;
        !            96:        struct isa_attach_args *ia = aux;
        !            97:
        !            98:        if (bus_space_map(sc->iot, ia->ia_iobase, OPL_SIZE, 0, &sc->ioh)) {
        !            99:                printf("opl_isa_attach: bus_space_map failed\n");
        !           100:                return;
        !           101:        }
        !           102:        sc->offs = 0;
        !           103:
        !           104:        opl_attach(sc);
        !           105: }