1 /* $NetBSD: intio.c,v 1.14 2011/06/06 16:52:18 matt 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 1.14 2011/06/06 16:52:18 matt 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(device_t, cfdata_t, void *); 49 void intioattach(device_t, device_t, void *); 50 int intioprint(void *, const char *); 51 int intiosearch(device_t, cfdata_t, const int *, void *); 52 53 CFATTACH_DECL_NEW(intio, 0, 54 intiomatch, intioattach, NULL, NULL); 55 56 #if 0 57 struct cfdriver intio_cd = { 58 NULL, "intio", DV_DULL 59 }; 60 #endif 61 62 static bool intio_attached; 63 64 int 65 intiomatch(device_t parent, cfdata_t match, void *aux) 66 { 67 /* Allow only one instance. */ 68 if (intio_attached) 69 return (0); 70 71 return (1); 72 } 73 74 void 75 intioattach(device_t parent, device_t self, void *aux) 76 { 77 78 printf("\n"); 79 80 /* Search for and attach children. */ 81 config_search_ia(intiosearch, self, "intio", aux); 82 83 intio_attached = true; 84 } 85 86 int 87 intioprint(void *aux, const char *pnp) 88 { 89 struct intio_attach_args *ia = aux; 90 91 if (ia->ia_addr) 92 aprint_normal(" addr %p", ia->ia_addr); 93 94 return (UNCONF); 95 } 96 97 int 98 intiosearch(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 99 { 100 struct mainbus_attach_args *mba = (struct mainbus_attach_args *) aux; 101 struct intio_attach_args ia; 102 103 do { 104 ia.ia_addr = NULL; 105 ia.ia_bst = NEXT68K_INTIO_BUS_SPACE; 106 ia.ia_dmat = mba->mba_dmat; 107 108 if (config_match(parent, cf, &ia) == 0) 109 break; 110 config_attach(parent, cf, &ia, intioprint); 111 } while (cf->cf_fstate == FSTATE_STAR); 112 113 return (0); 114 } 115