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Annotation of sys/arch/hp300/dev/intio.c, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: intio.c,v 1.6 2007/01/06 20:10:57 miod Exp $  */
        !             2: /*     $NetBSD: intio.c,v 1.2 1997/01/30 09:18:54 thorpej 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: /*
        !            41:  * Autoconfiguration support for hp300 internal i/o space.
        !            42:  */
        !            43:
        !            44: #include <sys/param.h>
        !            45: #include <sys/systm.h>
        !            46: #include <sys/device.h>
        !            47:
        !            48: #include <machine/bus.h>
        !            49:
        !            50: #include <hp300/dev/intiovar.h>
        !            51:
        !            52: int    intiomatch(struct device *, void *, void *);
        !            53: void   intioattach(struct device *, struct device *, void *);
        !            54: int    intioprint(void *, const char *);
        !            55: int    intiosearch(struct device *, void *, void *);
        !            56:
        !            57: struct cfattach intio_ca = {
        !            58:        sizeof(struct device), intiomatch, intioattach
        !            59: };
        !            60:
        !            61: struct cfdriver intio_cd = {
        !            62:        NULL, "intio", DV_DULL
        !            63: };
        !            64:
        !            65: int
        !            66: intiomatch(parent, match, aux)
        !            67:        struct device *parent;
        !            68:        void *match, *aux;
        !            69: {
        !            70:        static int intio_matched = 0;
        !            71:
        !            72:        /* Allow only one instance. */
        !            73:        if (intio_matched)
        !            74:                return (0);
        !            75:
        !            76:        intio_matched = 1;
        !            77:        return (1);
        !            78: }
        !            79:
        !            80: void
        !            81: intioattach(parent, self, aux)
        !            82:        struct device *parent, *self;
        !            83:        void *aux;
        !            84: {
        !            85:
        !            86:        printf("\n");
        !            87:
        !            88:        /* Search for and attach children. */
        !            89:        config_search(intiosearch, self, NULL);
        !            90: }
        !            91:
        !            92: int
        !            93: intioprint(aux, pnp)
        !            94:        void *aux;
        !            95:        const char *pnp;
        !            96: {
        !            97:        struct intio_attach_args *ia = aux;
        !            98:
        !            99:        if (ia->ia_addr != 0)
        !           100:                printf(" addr %p", ia->ia_addr);
        !           101:        return (UNCONF);
        !           102: }
        !           103:
        !           104: int
        !           105: intiosearch(parent, match, aux)
        !           106:        struct device *parent;
        !           107:        void *match, *aux;
        !           108: {
        !           109:        struct cfdata *cf = match;
        !           110:        struct intio_attach_args ia;
        !           111:        extern struct hp300_bus_space_tag hp300_mem_tag;
        !           112:
        !           113:        bzero(&ia, sizeof(ia));
        !           114:        ia.ia_tag = &hp300_mem_tag;
        !           115:
        !           116:        if ((*cf->cf_attach->ca_match)(parent, cf, &ia) > 0)
        !           117:                config_attach(parent, cf, &ia, intioprint);
        !           118:
        !           119:        return (0);
        !           120: }