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Annotation of sys/arch/mac68k/dev/obio.c, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: obio.c,v 1.6 2005/12/21 18:52:28 miod Exp $   */
        !             2: /*     $NetBSD: obio.c,v 1.7 1997/02/13 19:01:07 scottr Exp $  */
        !             3:
        !             4: /*
        !             5:  * Copyright (c) 1996 The NetBSD Foundation, Inc.
        !             6:  * All rights reserved.
        !             7:  *
        !             8:  * This code is derived from software contributed to the NetBSD Foundation
        !             9:  * by Jason R. Thorpe.
        !            10:  *
        !            11:  * Redistribution and use in source and binary forms, with or without
        !            12:  * modification, are permitted provided that the following conditions
        !            13:  * are met:
        !            14:  * 1. Redistributions of source code must retain the above copyright
        !            15:  *    notice, this list of conditions and the following disclaimer.
        !            16:  * 2. Redistributions in binary form must reproduce the above copyright
        !            17:  *    notice, this list of conditions and the following disclaimer in the
        !            18:  *    documentation and/or other materials provided with the distribution.
        !            19:  * 3. All advertising materials mentioning features or use of this software
        !            20:  *    must display the following acknowledgement:
        !            21:  *        This product includes software developed by the NetBSD
        !            22:  *        Foundation, Inc. and its contributors.
        !            23:  * 4. Neither the name of The NetBSD Foundation nor the names of its
        !            24:  *    contributors may be used to endorse or promote products derived
        !            25:  *    from this software without specific prior written permission.
        !            26:  *
        !            27:  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
        !            28:  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
        !            29:  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
        !            30:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
        !            31:  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
        !            32:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
        !            33:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
        !            34:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
        !            35:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
        !            36:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
        !            37:  * POSSIBILITY OF SUCH DAMAGE.
        !            38:  */
        !            39:
        !            40: #include <sys/param.h>
        !            41: #include <sys/systm.h>
        !            42: #include <sys/device.h>
        !            43:
        !            44: #include <machine/bus.h>
        !            45:
        !            46: #include <mac68k/dev/obiovar.h>
        !            47:
        !            48: static int     obio_match(struct device *, void *, void *);
        !            49: static void    obio_attach(struct device *, struct device *, void *);
        !            50: static int     obio_print(void *, const char *);
        !            51: static int     obio_search(struct device *, void *, void *);
        !            52:
        !            53: struct cfattach obio_ca = {
        !            54:        sizeof(struct device), obio_match, obio_attach
        !            55: };
        !            56:
        !            57: struct cfdriver obio_cd = {
        !            58:        NULL, "obio", DV_DULL
        !            59: };
        !            60:
        !            61: static int
        !            62: obio_match(parent, vcf, aux)
        !            63:        struct device *parent;
        !            64:        void *vcf;
        !            65:        void *aux;
        !            66: {
        !            67:        static int obio_matched = 0;
        !            68:
        !            69:        /* Allow only one instance. */
        !            70:        if (obio_matched)
        !            71:                return (0);
        !            72:
        !            73:        obio_matched = 1;
        !            74:        return (1);
        !            75: }
        !            76:
        !            77: static void
        !            78: obio_attach(parent, self, aux)
        !            79:        struct device *parent;
        !            80:        struct device *self;
        !            81:        void *aux;
        !            82: {
        !            83:        printf("\n");
        !            84:
        !            85:        /* Search for and attach children. */
        !            86:        (void)config_search(obio_search, self, aux);
        !            87: }
        !            88:
        !            89: int
        !            90: obio_print(args, name)
        !            91:        void *args;
        !            92:        const char *name;
        !            93: {
        !            94:        struct obio_attach_args *oa = (struct obio_attach_args *)args;
        !            95:
        !            96:        if (oa->oa_addr != (-1))
        !            97:                printf(" addr %x", oa->oa_addr);
        !            98:
        !            99:        return (UNCONF);
        !           100: }
        !           101:
        !           102: int
        !           103: obio_search(parent, vcf, aux)
        !           104:        struct device *parent;
        !           105:        void *vcf;
        !           106:        void *aux;
        !           107: {
        !           108:        struct obio_attach_args oa;
        !           109:        struct cfdata   *cf = (struct cfdata *) vcf;
        !           110:
        !           111:        oa.oa_addr = cf->cf_loc[0];
        !           112:        oa.oa_tag = MAC68K_BUS_SPACE_MEM;
        !           113:
        !           114:        if ((*cf->cf_attach->ca_match)(parent, cf, &oa) > 0)
        !           115:                config_attach(parent, cf, &oa, obio_print);
        !           116:
        !           117:        return (0);
        !           118: }