1 /* $NetBSD: mainbus.c,v 1.24 2022/09/27 06:36:42 skrll 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 1.24 2022/09/27 06:36:42 skrll 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/device.h> 52 53 #if defined(arm32) /* XXX */ 54 #include <machine/io.h> 55 #endif 56 #include <sys/bus.h> 57 #include <arm/mainbus/mainbus.h> 58 #include "locators.h" 59 60 /* 61 * mainbus is a root device so we a bus space tag to pass to children 62 * 63 * The tag is provided by mainbus_io.c and mainbus_io_asm.S 64 */ 65 66 extern struct bus_space mainbus_bs_tag; 67 68 /* Prototypes for functions provided */ 69 70 static int mainbusmatch(device_t, cfdata_t, void *); 71 static void mainbusattach(device_t, device_t, void *); 72 static int mainbusprint(void *aux, const char *mainbus); 73 static int mainbussearch(device_t, cfdata_t, 74 const int *, void *); 75 76 /* attach and device structures for the device */ 77 78 CFATTACH_DECL_NEW(mainbus, 0, 79 mainbusmatch, mainbusattach, NULL, NULL); 80 81 /* 82 * int mainbusmatch(device_t parent, cfdata_t cf, void *aux) 83 * 84 * Always match for unit 0 85 */ 86 87 static int 88 mainbusmatch(device_t parent, cfdata_t cf, void *aux) 89 { 90 return (1); 91 } 92 93 /* 94 * int mainbusprint(void *aux, const char *mainbus) 95 * 96 * print routine used during config of children 97 */ 98 99 static int 100 mainbusprint(void *aux, const char *mainbus) 101 { 102 struct mainbus_attach_args *mb = aux; 103 104 if (mb->mb_iobase != MAINBUSCF_BASE_DEFAULT) 105 aprint_normal(" base 0x%x", mb->mb_iobase); 106 if (mb->mb_iosize > 1) 107 aprint_normal("-0x%x", mb->mb_iobase + mb->mb_iosize - 1); 108 if (mb->mb_irq != -1) 109 aprint_normal(" irq %d", mb->mb_irq); 110 if (mb->mb_drq != -1) 111 aprint_normal(" drq 0x%08x", mb->mb_drq); 112 if (mb->mb_core != MAINBUSCF_CORE_DEFAULT) 113 aprint_normal(" core %d", mb->mb_core); 114 115 /* XXXX print flags */ 116 return (QUIET); 117 } 118 119 /* 120 * int mainbussearch(device_t parent, device_t self, void *aux) 121 * 122 * search routine used during the config of children 123 */ 124 125 static int 126 mainbussearch(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 127 { 128 struct mainbus_attach_args mb; 129 int tryagain; 130 131 do { 132 if (cf->cf_loc[MAINBUSCF_BASE] == MAINBUSCF_BASE_DEFAULT) { 133 mb.mb_iobase = MAINBUSCF_BASE_DEFAULT; 134 mb.mb_iosize = 0; 135 mb.mb_drq = MAINBUSCF_DACK_DEFAULT; 136 mb.mb_irq = MAINBUSCF_IRQ_DEFAULT; 137 } else { 138 mb.mb_iobase = cf->cf_loc[MAINBUSCF_BASE]; 139 #if defined(arm32) && !defined(EB7500ATX) 140 mb.mb_iobase += IO_CONF_BASE; 141 #endif 142 mb.mb_iosize = cf->cf_loc[MAINBUSCF_SIZE]; 143 mb.mb_drq = cf->cf_loc[MAINBUSCF_DACK]; 144 mb.mb_irq = cf->cf_loc[MAINBUSCF_IRQ]; 145 } 146 mb.mb_core = cf->cf_loc[MAINBUSCF_CORE]; 147 mb.mb_intrbase = cf->cf_loc[MAINBUSCF_INTRBASE]; 148 mb.mb_iot = &mainbus_bs_tag; 149 150 tryagain = 0; 151 if (config_probe(parent, cf, &mb)) { 152 config_attach(parent, cf, &mb, mainbusprint, CFARGS_NONE); 153 #ifdef MULTIPROCESSOR 154 tryagain = (cf->cf_fstate == FSTATE_STAR); 155 #endif 156 } 157 } while (tryagain); 158 159 return (0); 160 } 161 162 /* 163 * void mainbusattach(device_t parent, device_t self, void *aux) 164 * 165 * probe and attach all children 166 */ 167 168 static void 169 mainbusattach(device_t parent, device_t self, void *aux) 170 { 171 aprint_naive("\n"); 172 aprint_normal("\n"); 173 174 config_search(self, NULL, 175 CFARGS(.search = mainbussearch)); 176 } 177 178 /* End of mainbus.c */ 179
Indexes created Tue Sep 23 02:09:52 GMT 2025