1 /* $NetBSD: cpuunit.c,v 1.6 2002/10/02 16:02:10 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 "cpu units". 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 53 struct cpuunit_softc { 54 struct device sc_dev; 55 int sc_node; /* our OBP node */ 56 57 bus_space_tag_t sc_st; /* ours */ 58 bus_space_tag_t sc_bustag; /* passed on to children */ 59 60 int sc_device_id; /* device-id */ 61 int sc_board; /* board number */ 62 }; 63 64 static int cpuunit_match(struct device *, struct cfdata *, void *); 65 static void cpuunit_attach(struct device *, struct device *, void *); 66 67 CFATTACH_DECL(cpuunit, sizeof(struct cpuunit_softc), 68 cpuunit_match, cpuunit_attach, NULL, NULL); 69 70 static int cpuunit_print(void *, const char *); 71 72 static int cpuunit_setup_attach_args(struct cpuunit_softc *, bus_space_tag_t, 73 int, struct cpuunit_attach_args *); 74 static void cpuunit_destroy_attach_args(struct cpuunit_attach_args *); 75 76 static int 77 cpuunit_match(struct device *parent, struct cfdata *cf, void *aux) 78 { 79 struct mainbus_attach_args *ma = aux; 80 81 if (strcmp(ma->ma_name, "cpu-unit") == 0) 82 return (1); 83 84 return (0); 85 } 86 87 static void 88 cpuunit_attach(struct device *parent, struct device *self, void *aux) 89 { 90 struct cpuunit_softc *sc = (void *) self; 91 struct mainbus_attach_args *ma = aux; 92 int node, error; 93 94 sc->sc_node = ma->ma_node; 95 sc->sc_st = ma->ma_bustag; 96 97 sc->sc_device_id = PROM_getpropint(sc->sc_node, "device-id", -1); 98 sc->sc_board = PROM_getpropint(sc->sc_node, "board#", -1); 99 100 printf(": board #%d, ID %d\n", sc->sc_board, sc->sc_device_id); 101 102 /* 103 * Initialize the bus space tag we pass on to our children. 104 */ 105 sc->sc_bustag = malloc(sizeof(*sc->sc_bustag), M_DEVBUF, 106 M_WAITOK|M_ZERO); 107 sc->sc_bustag->cookie = sc; 108 sc->sc_bustag->parent = sc->sc_st; 109 sc->sc_bustag->sparc_bus_map = sc->sc_st->sparc_bus_map; 110 sc->sc_bustag->sparc_bus_mmap = sc->sc_st->sparc_bus_mmap; 111 112 /* 113 * Collect address translations from the OBP. 114 */ 115 error = PROM_getprop(sc->sc_node, "ranges", 116 sizeof(struct openprom_range), &sc->sc_bustag->nranges, 117 (void **) &sc->sc_bustag->ranges); 118 if (error) { 119 printf("%s: error %d getting \"ranges\" property\n", 120 sc->sc_dev.dv_xname, error); 121 panic("cpuunit_attach"); 122 } 123 124 /* Attach the CPU (and possibly bootbus) child nodes. */ 125 for (node = firstchild(sc->sc_node); node != 0; 126 node = nextsibling(node)) { 127 struct cpuunit_attach_args cpua; 128 129 if (cpuunit_setup_attach_args(sc, sc->sc_bustag, node, &cpua)) 130 panic("cpuunit_attach: failed to set up attach args"); 131 132 (void) config_found(&sc->sc_dev, &cpua, cpuunit_print); 133 134 cpuunit_destroy_attach_args(&cpua); 135 } 136 } 137 138 static int 139 cpuunit_print(void *aux, const char *pnp) 140 { 141 struct cpuunit_attach_args *cpua = aux; 142 143 if (pnp) 144 printf("%s at %s", cpua->cpua_name, pnp); 145 146 return (UNCONF); 147 } 148 149 static int 150 cpuunit_setup_attach_args(struct cpuunit_softc *sc, bus_space_tag_t bustag, 151 int node, struct cpuunit_attach_args *cpua) 152 { 153 int n, error; 154 155 memset(cpua, 0, sizeof(*cpua)); 156 157 error = PROM_getprop(node, "name", 1, &n, (void **) &cpua->cpua_name); 158 if (error) 159 return (error); 160 cpua->cpua_name[n] = '\0'; 161 162 error = PROM_getprop(node, "device_type", 1, &n, 163 (void **) &cpua->cpua_type); 164 if (error) { 165 free(cpua->cpua_name, M_DEVBUF); 166 return (error); 167 } 168 169 cpua->cpua_bustag = bustag; 170 cpua->cpua_node = node; 171 cpua->cpua_device_id = sc->sc_device_id; 172 173 return (0); 174 } 175 176 static void 177 cpuunit_destroy_attach_args(struct cpuunit_attach_args *cpua) 178 { 179 180 if (cpua->cpua_name != NULL) 181 free(cpua->cpua_name, M_DEVBUF); 182 183 if (cpua->cpua_type != NULL) 184 free(cpua->cpua_type, M_DEVBUF); 185 } 186