bootbus.c revision 1.19
1 /* $NetBSD: bootbus.c,v 1.19 2011/07/18 00:31:13 mrg Exp $ */ 2 3 /*- 4 * Copyright (c) 2002 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 Sun4d "bootbus". 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: bootbus.c,v 1.19 2011/07/18 00:31:13 mrg Exp $"); 38 39 #include <sys/param.h> 40 #include <sys/malloc.h> 41 #include <sys/systm.h> 42 #include <sys/device.h> 43 44 #include <machine/autoconf.h> 45 #include <sys/bus.h> 46 47 #include <sparc/sparc/cpuunitvar.h> 48 #include <sparc/dev/bootbusvar.h> 49 50 #include "locators.h" 51 52 struct bootbus_softc { 53 int sc_node; /* our OBP node */ 54 55 bus_space_tag_t sc_st; /* ours */ 56 bus_space_tag_t sc_bustag; /* passed on to children */ 57 }; 58 59 static int bootbus_match(device_t, cfdata_t, void *); 60 static void bootbus_attach(device_t, device_t, void *); 61 62 CFATTACH_DECL_NEW(bootbus, sizeof(struct bootbus_softc), 63 bootbus_match, bootbus_attach, NULL, NULL); 64 65 static int bootbus_submatch(device_t, cfdata_t, const int *, void *); 66 static int bootbus_print(void *, const char *); 67 68 static int bootbus_setup_attach_args(struct bootbus_softc *, bus_space_tag_t, 69 int, struct bootbus_attach_args *); 70 static void bootbus_destroy_attach_args(struct bootbus_attach_args *); 71 72 static int 73 bootbus_match(device_t parent, cfdata_t cf, void *aux) 74 { 75 struct cpuunit_attach_args *cpua = aux; 76 77 if (strcmp(cpua->cpua_name, cf->cf_name) == 0) 78 return (1); 79 80 return (0); 81 } 82 83 static void 84 bootbus_attach(device_t parent, device_t self, void *aux) 85 { 86 struct bootbus_softc *sc = device_private(self); 87 struct cpuunit_attach_args *cpua = aux; 88 int node, error; 89 90 sc->sc_node = cpua->cpua_node; 91 sc->sc_st = cpua->cpua_bustag; 92 93 printf("\n"); 94 95 /* 96 * Initialize the bus space tag we pass on to our children. 97 */ 98 sc->sc_bustag = malloc(sizeof(*sc->sc_bustag), M_DEVBUF, 99 M_WAITOK|M_ZERO); 100 sc->sc_bustag->cookie = sc; 101 sc->sc_bustag->parent = sc->sc_st; 102 sc->sc_bustag->sparc_bus_map = sc->sc_st->sparc_bus_map; 103 sc->sc_bustag->sparc_bus_mmap = sc->sc_st->sparc_bus_mmap; 104 105 /* 106 * Collect address translations from the OBP. 107 */ 108 error = prom_getprop(sc->sc_node, "ranges", 109 sizeof(struct openprom_range), &sc->sc_bustag->nranges, 110 &sc->sc_bustag->ranges); 111 if (error) { 112 printf("%s: error %d getting \"ranges\" property\n", 113 device_xname(self), error); 114 panic("bootbus_attach"); 115 } 116 117 /* Attach the CPU (and possibly bootbus) child nodes. */ 118 for (node = firstchild(sc->sc_node); node != 0; 119 node = nextsibling(node)) { 120 struct bootbus_attach_args baa; 121 122 if (bootbus_setup_attach_args(sc, sc->sc_bustag, node, &baa)) 123 panic("bootbus_attach: failed to set up attach args"); 124 125 (void) config_found_sm_loc(self, "bootbus", NULL, &baa, 126 bootbus_print, bootbus_submatch); 127 128 bootbus_destroy_attach_args(&baa); 129 } 130 } 131 132 static int 133 bootbus_submatch(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 134 { 135 struct bootbus_attach_args *baa = aux; 136 137 if (cf->cf_loc[BOOTBUSCF_SLOT] != BOOTBUSCF_SLOT_DEFAULT && 138 cf->cf_loc[BOOTBUSCF_SLOT] != baa->ba_slot) 139 return (0); 140 141 if (cf->cf_loc[BOOTBUSCF_OFFSET] != BOOTBUSCF_OFFSET_DEFAULT && 142 cf->cf_loc[BOOTBUSCF_OFFSET] != baa->ba_offset) 143 return (0); 144 145 return (config_match(parent, cf, aux)); 146 } 147 148 static int 149 bootbus_print(void *aux, const char *pnp) 150 { 151 struct bootbus_attach_args *baa = aux; 152 int i; 153 154 if (pnp) 155 aprint_normal("%s at %s", baa->ba_name, pnp); 156 aprint_normal(" slot %d offset 0x%x", baa->ba_slot, baa->ba_offset); 157 for (i = 0; i < baa->ba_nintr; i++) 158 aprint_normal(" ipl %d", baa->ba_intr[i].oi_pri); 159 160 return (UNCONF); 161 } 162 163 static int 164 bootbus_setup_attach_args(struct bootbus_softc *sc, bus_space_tag_t bustag, 165 int node, struct bootbus_attach_args *baa) 166 { 167 int n, error; 168 169 memset(baa, 0, sizeof(*baa)); 170 171 error = prom_getprop(node, "name", 1, &n, &baa->ba_name); 172 if (error) 173 return (error); 174 baa->ba_name[n] = '\0'; 175 176 baa->ba_bustag = bustag; 177 baa->ba_node = node; 178 179 error = prom_getprop(node, "reg", sizeof(struct openprom_addr), 180 &baa->ba_nreg, &baa->ba_reg); 181 if (error) { 182 bootbus_destroy_attach_args(baa); 183 return (error); 184 } 185 186 error = prom_getprop(node, "intr", sizeof(struct openprom_intr), 187 &baa->ba_nintr, &baa->ba_intr); 188 if (error != 0 && error != ENOENT) { 189 bootbus_destroy_attach_args(baa); 190 return (error); 191 } 192 193 error = prom_getprop(node, "address", sizeof(uint32_t), 194 &baa->ba_npromvaddrs, &baa->ba_promvaddrs); 195 if (error != 0 && error != ENOENT) { 196 bootbus_destroy_attach_args(baa); 197 return (error); 198 } 199 200 return (0); 201 } 202 203 static void 204 bootbus_destroy_attach_args(struct bootbus_attach_args *baa) 205 { 206 207 if (baa->ba_name != NULL) 208 free(baa->ba_name, M_DEVBUF); 209 210 if (baa->ba_reg != NULL) 211 free(baa->ba_reg, M_DEVBUF); 212 213 if (baa->ba_intr != NULL) 214 free(baa->ba_intr, M_DEVBUF); 215 216 if (baa->ba_promvaddrs != NULL) 217 free(baa->ba_promvaddrs, M_DEVBUF); 218 } 219
Indexes created Tue Sep 30 20:09:53 GMT 2025