1 /* $NetBSD: mainbus.c,v 1.13 2005/12/11 12:16:51 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1994,1995 Mark Brinicombe. 5 * Copyright (c) 1994 Brini. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Brini. 19 * 4. The name of the company nor the name of the author may be used to 20 * endorse or promote products derived from this software without specific 21 * prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED 24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 27 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 28 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 29 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * RiscBSD kernel project 36 * 37 * mainbus.c 38 * 39 * mainbus configuration 40 * 41 * Created : 15/12/94 42 */ 43 44 #include <sys/cdefs.h> 45 __KERNEL_RCSID(0, "$NetBSD: mainbus.c,v 1.13 2005/12/11 12:16:51 christos Exp $"); 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/kernel.h> 50 #include <sys/conf.h> 51 #include <sys/malloc.h> 52 #include <sys/device.h> 53 54 #if defined(arm32) /* XXX */ 55 #include <machine/io.h> 56 #endif 57 #include <machine/bus.h> 58 #include <arm/mainbus/mainbus.h> 59 #include "locators.h" 60 61 /* 62 * mainbus is a root device so we a bus space tag to pass to children 63 * 64 * The tag is provided by mainbus_io.c and mainbus_io_asm.S 65 */ 66 67 extern struct bus_space mainbus_bs_tag; 68 69 /* Prototypes for functions provided */ 70 71 static int mainbusmatch __P((struct device *, struct cfdata *, void *)); 72 static void mainbusattach __P((struct device *, struct device *, void *)); 73 static int mainbusprint __P((void *aux, const char *mainbus)); 74 static int mainbussearch __P((struct device *, struct cfdata *, 75 const int *, void *)); 76 77 /* attach and device structures for the device */ 78 79 CFATTACH_DECL(mainbus, sizeof(struct device), 80 mainbusmatch, mainbusattach, NULL, NULL); 81 82 /* 83 * int mainbusmatch(struct device *parent, struct cfdata *cf, void *aux) 84 * 85 * Always match for unit 0 86 */ 87 88 static int 89 mainbusmatch(parent, cf, aux) 90 struct device *parent; 91 struct cfdata *cf; 92 void *aux; 93 { 94 return (1); 95 } 96 97 /* 98 * int mainbusprint(void *aux, const char *mainbus) 99 * 100 * print routine used during config of children 101 */ 102 103 static int 104 mainbusprint(aux, mainbus) 105 void *aux; 106 const char *mainbus; 107 { 108 struct mainbus_attach_args *mb = aux; 109 110 if (mb->mb_iobase != MAINBUSCF_BASE_DEFAULT) 111 aprint_normal(" base 0x%x", mb->mb_iobase); 112 if (mb->mb_iosize > 1) 113 aprint_normal("-0x%x", mb->mb_iobase + mb->mb_iosize - 1); 114 if (mb->mb_irq != -1) 115 aprint_normal(" irq %d", mb->mb_irq); 116 if (mb->mb_drq != -1) 117 aprint_normal(" drq 0x%08x", mb->mb_drq); 118 119 /* XXXX print flags */ 120 return (QUIET); 121 } 122 123 /* 124 * int mainbussearch(struct device *parent, struct device *self, void *aux) 125 * 126 * search routine used during the config of children 127 */ 128 129 static int 130 mainbussearch(parent, cf, ldesc, aux) 131 struct device *parent; 132 struct cfdata *cf; 133 const int *ldesc; 134 void *aux; 135 { 136 struct mainbus_attach_args mb; 137 int tryagain; 138 139 do { 140 if (cf->cf_loc[MAINBUSCF_BASE] == MAINBUSCF_BASE_DEFAULT) { 141 mb.mb_iobase = MAINBUSCF_BASE_DEFAULT; 142 mb.mb_iosize = 0; 143 mb.mb_drq = MAINBUSCF_DACK_DEFAULT; 144 mb.mb_irq = MAINBUSCF_IRQ_DEFAULT; 145 } else { 146 mb.mb_iobase = cf->cf_loc[MAINBUSCF_BASE]; 147 #if defined(arm32) && !defined(EB7500ATX) 148 mb.mb_iobase += IO_CONF_BASE; 149 #endif 150 mb.mb_iosize = 0; 151 mb.mb_drq = cf->cf_loc[MAINBUSCF_DACK]; 152 mb.mb_irq = cf->cf_loc[MAINBUSCF_IRQ]; 153 } 154 mb.mb_iot = &mainbus_bs_tag; 155 156 tryagain = 0; 157 if (config_match(parent, cf, &mb) > 0) { 158 config_attach(parent, cf, &mb, mainbusprint); 159 /* tryagain = (cf->cf_fstate == FSTATE_STAR);*/ 160 } 161 } while (tryagain); 162 163 return (0); 164 } 165 166 /* 167 * void mainbusattach(struct device *parent, struct device *self, void *aux) 168 * 169 * probe and attach all children 170 */ 171 172 static void 173 mainbusattach(parent, self, aux) 174 struct device *parent; 175 struct device *self; 176 void *aux; 177 { 178 aprint_naive("\n"); 179 aprint_normal("\n"); 180 181 config_search_ia(mainbussearch, self, "mainbus", NULL); 182 } 183 184 /* End of mainbus.c */ 185