bootbus.c revision 1.2
1 /* $NetBSD: bootbus.c,v 1.2 2002/08/25 16:05:41 thorpej 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Autoconfiguration support for Sun4d "bootbus". 41 */ 42 43 #include <sys/param.h> 44 #include <sys/malloc.h> 45 #include <sys/systm.h> 46 #include <sys/device.h> 47 48 #include <machine/autoconf.h> 49 #include <machine/bus.h> 50 51 #include <sparc/sparc/cpuunitvar.h> 52 #include <sparc/dev/bootbusvar.h> 53 54 #include "locators.h" 55 56 struct bootbus_softc { 57 struct device sc_dev; 58 int sc_node; /* our OBP node */ 59 60 bus_space_tag_t sc_st; /* ours */ 61 bus_space_tag_t sc_bustag; /* passed on to children */ 62 63 struct openprom_range *sc_range; /* our address ranges */ 64 int sc_nrange; 65 }; 66 67 static int bootbus_match(struct device *, struct cfdata *, void *); 68 static void bootbus_attach(struct device *, struct device *, void *); 69 70 struct cfattach bootbus_ca = { 71 sizeof(struct bootbus_softc), bootbus_match, bootbus_attach, 72 }; 73 74 static int bootbus_submatch(struct device *, struct cfdata *, void *); 75 static int bootbus_print(void *, const char *); 76 77 static int bootbus_bus_map(bus_space_tag_t, bus_addr_t, size_t, int, 78 vaddr_t, bus_space_handle_t *); 79 static paddr_t bootbus_bus_mmap(bus_space_tag_t, bus_addr_t, off_t, 80 int, int); 81 static void *bootbus_intr_establish(bus_space_tag_t, int, int, int, 82 int (*)(void *), void *); 83 84 static int bootbus_setup_attach_args(struct bootbus_softc *, bus_space_tag_t, 85 int, struct bootbus_attach_args *); 86 static void bootbus_destroy_attach_args(struct bootbus_attach_args *); 87 88 static int 89 bootbus_match(struct device *parent, struct cfdata *cf, void *aux) 90 { 91 struct cpuunit_attach_args *cpua = aux; 92 93 if (strcmp(cpua->cpua_name, cf->cf_driver->cd_name) == 0) 94 return (1); 95 96 return (0); 97 } 98 99 static void 100 bootbus_attach(struct device *parent, struct device *self, void *aux) 101 { 102 struct bootbus_softc *sc = (void *) self; 103 struct cpuunit_attach_args *cpua = aux; 104 int node, error; 105 106 sc->sc_node = cpua->cpua_node; 107 sc->sc_st = cpua->cpua_bustag; 108 109 printf("\n"); 110 111 /* 112 * Initialize the bus space tag we pass on to our children. 113 */ 114 sc->sc_bustag = malloc(sizeof(*sc->sc_bustag), M_DEVBUF, 115 M_WAITOK|M_ZERO); 116 sc->sc_bustag->cookie = sc; 117 sc->sc_bustag->parent = sc->sc_st; 118 sc->sc_bustag->sparc_bus_map = bootbus_bus_map; 119 sc->sc_bustag->sparc_bus_mmap = bootbus_bus_mmap; 120 sc->sc_bustag->sparc_intr_establish = bootbus_intr_establish; 121 122 /* 123 * Collect address translations from the OBP. 124 */ 125 error = PROM_getprop(sc->sc_node, "ranges", 126 sizeof(struct openprom_range), &sc->sc_nrange, 127 (void **) &sc->sc_range); 128 if (error) { 129 printf("%s: error %d getting \"ranges\" property\n", 130 sc->sc_dev.dv_xname, error); 131 panic("bootbus_attach"); 132 } 133 134 /* Attach the CPU (and possibly bootbus) child nodes. */ 135 for (node = firstchild(sc->sc_node); node != 0; 136 node = nextsibling(node)) { 137 struct bootbus_attach_args baa; 138 139 if (bootbus_setup_attach_args(sc, sc->sc_bustag, node, &baa)) 140 panic("bootbus_attach: failed to set up attach args"); 141 142 (void) config_found_sm(&sc->sc_dev, &baa, bootbus_print, 143 bootbus_submatch); 144 145 bootbus_destroy_attach_args(&baa); 146 } 147 } 148 149 static int 150 bootbus_submatch(struct device *parent, struct cfdata *cf, void *aux) 151 { 152 struct bootbus_attach_args *baa = aux; 153 154 if (cf->cf_loc[BOOTBUSCF_SLOT] != BOOTBUSCF_SLOT_DEFAULT && 155 cf->cf_loc[BOOTBUSCF_SLOT] != baa->ba_slot) 156 return (0); 157 158 if (cf->cf_loc[BOOTBUSCF_OFFSET] != BOOTBUSCF_OFFSET_DEFAULT && 159 cf->cf_loc[BOOTBUSCF_OFFSET] != baa->ba_offset) 160 return (0); 161 162 return ((*cf->cf_attach->ca_match)(parent, cf, aux)); 163 } 164 165 static int 166 bootbus_print(void *aux, const char *pnp) 167 { 168 struct bootbus_attach_args *baa = aux; 169 int i; 170 171 if (pnp) 172 printf("%s at %s", baa->ba_name, pnp); 173 printf(" slot %d offset 0x%x", baa->ba_slot, baa->ba_offset); 174 for (i = 0; i < baa->ba_nintr; i++) 175 printf(" ipl %d", baa->ba_intr[i].oi_pri); 176 177 return (UNCONF); 178 } 179 180 static int 181 bootbus_setup_attach_args(struct bootbus_softc *sc, bus_space_tag_t bustag, 182 int node, struct bootbus_attach_args *baa) 183 { 184 int n, error; 185 186 memset(baa, 0, sizeof(*baa)); 187 188 error = PROM_getprop(node, "name", 1, &n, (void **) &baa->ba_name); 189 if (error) 190 return (error); 191 baa->ba_name[n] = '\0'; 192 193 baa->ba_bustag = bustag; 194 baa->ba_node = node; 195 196 error = PROM_getprop(node, "reg", sizeof(struct openprom_addr), 197 &baa->ba_nreg, (void **) &baa->ba_reg); 198 if (error) { 199 bootbus_destroy_attach_args(baa); 200 return (error); 201 } 202 203 error = PROM_getprop(node, "intr", sizeof(struct openprom_intr), 204 &baa->ba_nintr, (void **) &baa->ba_intr); 205 if (error != 0 && error != ENOENT) { 206 bootbus_destroy_attach_args(baa); 207 return (error); 208 } 209 210 error = PROM_getprop(node, "address", sizeof(uint32_t), 211 &baa->ba_npromvaddrs, (void **) &baa->ba_promvaddrs); 212 if (error != 0 && error != ENOENT) { 213 bootbus_destroy_attach_args(baa); 214 return (error); 215 } 216 217 return (0); 218 } 219 220 static void 221 bootbus_destroy_attach_args(struct bootbus_attach_args *baa) 222 { 223 224 if (baa->ba_name != NULL) 225 free(baa->ba_name, M_DEVBUF); 226 227 if (baa->ba_reg != NULL) 228 free(baa->ba_reg, M_DEVBUF); 229 230 if (baa->ba_intr != NULL) 231 free(baa->ba_intr, M_DEVBUF); 232 233 if (baa->ba_promvaddrs != NULL) 234 free(baa->ba_promvaddrs, M_DEVBUF); 235 } 236 237 static int 238 bootbus_bus_map(bus_space_tag_t t, bus_addr_t ba, bus_size_t size, 239 int flags, vaddr_t va, bus_space_handle_t *hp) 240 { 241 struct bootbus_softc *sc = t->cookie; 242 bus_addr_t addr; 243 int error; 244 245 error = bus_translate_address_generic(sc->sc_range, sc->sc_nrange, 246 ba, &addr); 247 if (error) 248 return (error); 249 return (bus_space_map2(sc->sc_st, addr, size, flags, va, hp)); 250 } 251 252 static paddr_t 253 bootbus_bus_mmap(bus_space_tag_t t, bus_addr_t ba, off_t off, int prot, 254 int flags) 255 { 256 struct bootbus_softc *sc = t->cookie; 257 bus_addr_t addr; 258 int error; 259 260 error = bus_translate_address_generic(sc->sc_range, sc->sc_nrange, 261 ba, &addr); 262 if (error) 263 return (-1); 264 return (bus_space_mmap(sc->sc_st, addr, off, prot, flags)); 265 } 266 267 static void * 268 bootbus_intr_establish(bus_space_tag_t t, int pil, int level, int flags, 269 int (*handler)(void *), void *arg) 270 { 271 struct intrhand *ih; 272 273 ih = malloc(sizeof(*ih), M_DEVBUF, M_NOWAIT); 274 if (ih == NULL) 275 return (NULL); 276 277 ih->ih_fun = handler; 278 ih->ih_arg = arg; 279 if ((flags & BUS_INTR_ESTABLISH_FASTTRAP) != 0) 280 intr_fasttrap(pil, (void (*)__P((void)))handler); 281 else 282 intr_establish(pil, ih); 283 return (ih); 284 } 285
Indexes created Tue Sep 30 20:09:53 GMT 2025