1 /* $NetBSD: bootbus.c,v 1.16 2008/04/28 20:23:35 martin 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 1.16 2008/04/28 20:23:35 martin 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 <machine/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 struct device sc_dev; 54 int sc_node; /* our OBP node */ 55 56 bus_space_tag_t sc_st; /* ours */ 57 bus_space_tag_t sc_bustag; /* passed on to children */ 58 }; 59 60 static int bootbus_match(struct device *, struct cfdata *, void *); 61 static void bootbus_attach(struct device *, struct device *, void *); 62 63 CFATTACH_DECL(bootbus, sizeof(struct bootbus_softc), 64 bootbus_match, bootbus_attach, NULL, NULL); 65 66 static int bootbus_submatch(struct device *, struct cfdata *, 67 const int *, void *); 68 static int bootbus_print(void *, const char *); 69 70 static int bootbus_setup_attach_args(struct bootbus_softc *, bus_space_tag_t, 71 int, struct bootbus_attach_args *); 72 static void bootbus_destroy_attach_args(struct bootbus_attach_args *); 73 74 static int 75 bootbus_match(struct device *parent, struct cfdata *cf, void *aux) 76 { 77 struct cpuunit_attach_args *cpua = aux; 78 79 if (strcmp(cpua->cpua_name, cf->cf_name) == 0) 80 return (1); 81 82 return (0); 83 } 84 85 static void 86 bootbus_attach(struct device *parent, struct device *self, void *aux) 87 { 88 struct bootbus_softc *sc = (void *) self; 89 struct cpuunit_attach_args *cpua = aux; 90 int node, error; 91 92 sc->sc_node = cpua->cpua_node; 93 sc->sc_st = cpua->cpua_bustag; 94 95 printf("\n"); 96 97 /* 98 * Initialize the bus space tag we pass on to our children. 99 */ 100 sc->sc_bustag = malloc(sizeof(*sc->sc_bustag), M_DEVBUF, 101 M_WAITOK|M_ZERO); 102 sc->sc_bustag->cookie = sc; 103 sc->sc_bustag->parent = sc->sc_st; 104 sc->sc_bustag->sparc_bus_map = sc->sc_st->sparc_bus_map; 105 sc->sc_bustag->sparc_bus_mmap = sc->sc_st->sparc_bus_mmap; 106 107 /* 108 * Collect address translations from the OBP. 109 */ 110 error = prom_getprop(sc->sc_node, "ranges", 111 sizeof(struct openprom_range), &sc->sc_bustag->nranges, 112 &sc->sc_bustag->ranges); 113 if (error) { 114 printf("%s: error %d getting \"ranges\" property\n", 115 sc->sc_dev.dv_xname, error); 116 panic("bootbus_attach"); 117 } 118 119 /* Attach the CPU (and possibly bootbus) child nodes. */ 120 for (node = firstchild(sc->sc_node); node != 0; 121 node = nextsibling(node)) { 122 struct bootbus_attach_args baa; 123 124 if (bootbus_setup_attach_args(sc, sc->sc_bustag, node, &baa)) 125 panic("bootbus_attach: failed to set up attach args"); 126 127 (void) config_found_sm_loc(&sc->sc_dev, "bootbus", NULL, &baa, 128 bootbus_print, bootbus_submatch); 129 130 bootbus_destroy_attach_args(&baa); 131 } 132 } 133 134 static int 135 bootbus_submatch(struct device *parent, struct cfdata *cf, 136 const int *ldesc, void *aux) 137 { 138 struct bootbus_attach_args *baa = aux; 139 140 if (cf->cf_loc[BOOTBUSCF_SLOT] != BOOTBUSCF_SLOT_DEFAULT && 141 cf->cf_loc[BOOTBUSCF_SLOT] != baa->ba_slot) 142 return (0); 143 144 if (cf->cf_loc[BOOTBUSCF_OFFSET] != BOOTBUSCF_OFFSET_DEFAULT && 145 cf->cf_loc[BOOTBUSCF_OFFSET] != baa->ba_offset) 146 return (0); 147 148 return (config_match(parent, cf, aux)); 149 } 150 151 static int 152 bootbus_print(void *aux, const char *pnp) 153 { 154 struct bootbus_attach_args *baa = aux; 155 int i; 156 157 if (pnp) 158 aprint_normal("%s at %s", baa->ba_name, pnp); 159 aprint_normal(" slot %d offset 0x%x", baa->ba_slot, baa->ba_offset); 160 for (i = 0; i < baa->ba_nintr; i++) 161 aprint_normal(" ipl %d", baa->ba_intr[i].oi_pri); 162 163 return (UNCONF); 164 } 165 166 static int 167 bootbus_setup_attach_args(struct bootbus_softc *sc, bus_space_tag_t bustag, 168 int node, struct bootbus_attach_args *baa) 169 { 170 int n, error; 171 172 memset(baa, 0, sizeof(*baa)); 173 174 error = prom_getprop(node, "name", 1, &n, &baa->ba_name); 175 if (error) 176 return (error); 177 baa->ba_name[n] = '\0'; 178 179 baa->ba_bustag = bustag; 180 baa->ba_node = node; 181 182 error = prom_getprop(node, "reg", sizeof(struct openprom_addr), 183 &baa->ba_nreg, &baa->ba_reg); 184 if (error) { 185 bootbus_destroy_attach_args(baa); 186 return (error); 187 } 188 189 error = prom_getprop(node, "intr", sizeof(struct openprom_intr), 190 &baa->ba_nintr, &baa->ba_intr); 191 if (error != 0 && error != ENOENT) { 192 bootbus_destroy_attach_args(baa); 193 return (error); 194 } 195 196 error = prom_getprop(node, "address", sizeof(uint32_t), 197 &baa->ba_npromvaddrs, &baa->ba_promvaddrs); 198 if (error != 0 && error != ENOENT) { 199 bootbus_destroy_attach_args(baa); 200 return (error); 201 } 202 203 return (0); 204 } 205 206 static void 207 bootbus_destroy_attach_args(struct bootbus_attach_args *baa) 208 { 209 210 if (baa->ba_name != NULL) 211 free(baa->ba_name, M_DEVBUF); 212 213 if (baa->ba_reg != NULL) 214 free(baa->ba_reg, M_DEVBUF); 215 216 if (baa->ba_intr != NULL) 217 free(baa->ba_intr, M_DEVBUF); 218 219 if (baa->ba_promvaddrs != NULL) 220 free(baa->ba_promvaddrs, M_DEVBUF); 221 } 222