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Annotation of sys/arch/hp300/dev/intio.c, Revision 1.1.1.1

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: }