1 /* $NetBSD: cpuunit.c,v 1.13 2008/04/28 20:23:36 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 "cpu units". 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: cpuunit.c,v 1.13 2008/04/28 20:23:36 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 49 struct cpuunit_softc { 50 struct device sc_dev; 51 int sc_node; /* our OBP node */ 52 53 bus_space_tag_t sc_st; /* ours */ 54 bus_space_tag_t sc_bustag; /* passed on to children */ 55 56 int sc_device_id; /* device-id */ 57 int sc_board; /* board number */ 58 }; 59 60 static int cpuunit_match(struct device *, struct cfdata *, void *); 61 static void cpuunit_attach(struct device *, struct device *, void *); 62 63 CFATTACH_DECL(cpuunit, sizeof(struct cpuunit_softc), 64 cpuunit_match, cpuunit_attach, NULL, NULL); 65 66 static int cpuunit_print(void *, const char *); 67 68 static int cpuunit_setup_attach_args(struct cpuunit_softc *, bus_space_tag_t, 69 int, struct cpuunit_attach_args *); 70 static void cpuunit_destroy_attach_args(struct cpuunit_attach_args *); 71 72 static int 73 cpuunit_match(struct device *parent, struct cfdata *cf, void *aux) 74 { 75 struct mainbus_attach_args *ma = aux; 76 77 if (strcmp(ma->ma_name, "cpu-unit") == 0) 78 return (1); 79 80 return (0); 81 } 82 83 static void 84 cpuunit_attach(struct device *parent, struct device *self, void *aux) 85 { 86 struct cpuunit_softc *sc = (void *) self; 87 struct mainbus_attach_args *ma = aux; 88 int node, error; 89 bus_space_tag_t sbt; 90 91 sc->sc_node = ma->ma_node; 92 sc->sc_st = ma->ma_bustag; 93 94 sc->sc_device_id = prom_getpropint(sc->sc_node, "device-id", -1); 95 sc->sc_board = prom_getpropint(sc->sc_node, "board#", -1); 96 97 printf(": board #%d, ID %d\n", sc->sc_board, sc->sc_device_id); 98 99 /* 100 * Initialize the bus space tag we pass on to our children. 101 */ 102 sbt = sc->sc_bustag = malloc(sizeof(*sbt), M_DEVBUF, M_WAITOK); 103 memcpy(sbt, sc->sc_st, sizeof(*sbt)); 104 sbt->cookie = sc; 105 sbt->parent = sc->sc_st; 106 sbt->nranges = 0; 107 sbt->ranges = NULL; 108 109 /* 110 * Collect address translations from the OBP. 111 */ 112 error = prom_getprop(sc->sc_node, "ranges", 113 sizeof(struct openprom_range), &sbt->nranges, &sbt->ranges); 114 if (error) { 115 printf("%s: error %d getting \"ranges\" property\n", 116 sc->sc_dev.dv_xname, error); 117 panic("cpuunit_attach"); 118 } 119 120 /* Attach the CPU (and possibly bootbus) child nodes. */ 121 for (node = firstchild(sc->sc_node); node != 0; 122 node = nextsibling(node)) { 123 struct cpuunit_attach_args cpua; 124 125 if (cpuunit_setup_attach_args(sc, sbt, node, &cpua)) 126 panic("cpuunit_attach: failed to set up attach args"); 127 128 (void) config_found(&sc->sc_dev, &cpua, cpuunit_print); 129 130 cpuunit_destroy_attach_args(&cpua); 131 } 132 } 133 134 static int 135 cpuunit_print(void *aux, const char *pnp) 136 { 137 struct cpuunit_attach_args *cpua = aux; 138 139 if (pnp) 140 aprint_normal("%s at %s", cpua->cpua_name, pnp); 141 142 return (UNCONF); 143 } 144 145 static int 146 cpuunit_setup_attach_args(struct cpuunit_softc *sc, bus_space_tag_t bustag, 147 int node, struct cpuunit_attach_args *cpua) 148 { 149 int n, error; 150 151 memset(cpua, 0, sizeof(*cpua)); 152 153 error = prom_getprop(node, "name", 1, &n, &cpua->cpua_name); 154 if (error) 155 return (error); 156 cpua->cpua_name[n] = '\0'; 157 158 error = prom_getprop(node, "device_type", 1, &n, 159 &cpua->cpua_type); 160 if (error) { 161 free(cpua->cpua_name, M_DEVBUF); 162 return (error); 163 } 164 165 cpua->cpua_bustag = bustag; 166 cpua->cpua_node = node; 167 cpua->cpua_device_id = sc->sc_device_id; 168 169 return (0); 170 } 171 172 static void 173 cpuunit_destroy_attach_args(struct cpuunit_attach_args *cpua) 174 { 175 176 if (cpua->cpua_name != NULL) 177 free(cpua->cpua_name, M_DEVBUF); 178 179 if (cpua->cpua_type != NULL) 180 free(cpua->cpua_type, M_DEVBUF); 181 } 182