1 /* $NetBSD: intio.c,v 1.13 2008/04/28 20:23:30 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 1996 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Autoconfiguration support for next68k internal i/o space. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: intio.c,v 1.13 2008/04/28 20:23:30 martin Exp $"); 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/device.h> 42 #include <sys/reboot.h> 43 44 #include <machine/autoconf.h> 45 46 #include <next68k/dev/intiovar.h> 47 48 int intiomatch(struct device *, struct cfdata *, void *); 49 void intioattach(struct device *, struct device *, void *); 50 int intioprint(void *, const char *); 51 int intiosearch(struct device *, struct cfdata *, 52 const int *, void *); 53 54 CFATTACH_DECL(intio, sizeof(struct device), 55 intiomatch, intioattach, NULL, NULL); 56 57 #if 0 58 struct cfdriver intio_cd = { 59 NULL, "intio", DV_DULL 60 }; 61 #endif 62 63 static int intio_attached = 0; 64 65 int 66 intiomatch(struct device *parent, struct cfdata *match, void *aux) 67 { 68 /* Allow only one instance. */ 69 if (intio_attached) 70 return (0); 71 72 return (1); 73 } 74 75 void 76 intioattach(struct device *parent, struct device *self, void *aux) 77 { 78 79 printf("\n"); 80 81 /* Search for and attach children. */ 82 config_search_ia(intiosearch, self, "intio", aux); 83 84 intio_attached = 1; 85 } 86 87 int 88 intioprint(void *aux, const char *pnp) 89 { 90 struct intio_attach_args *ia = aux; 91 92 if (ia->ia_addr) 93 aprint_normal(" addr %p", ia->ia_addr); 94 95 return (UNCONF); 96 } 97 98 int 99 intiosearch(struct device *parent, struct cfdata *cf, 100 const int *ldesc, void *aux) 101 { 102 struct mainbus_attach_args *mba = (struct mainbus_attach_args *) aux; 103 struct intio_attach_args ia; 104 105 do { 106 ia.ia_addr = NULL; 107 ia.ia_bst = NEXT68K_INTIO_BUS_SPACE; 108 ia.ia_dmat = mba->mba_dmat; 109 110 if (config_match(parent, cf, &ia) == 0) 111 break; 112 config_attach(parent, cf, &ia, intioprint); 113 } while (cf->cf_fstate == FSTATE_STAR); 114 115 return (0); 116 } 117