1 /* $NetBSD: cpuunit.c,v 1.19 2025/10/04 16:10:05 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 * 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 1.19 2025/10/04 16:10:05 thorpej Exp $"); 38 39 #include <sys/param.h> 40 #include <sys/malloc.h> 41 #include <sys/kmem.h> 42 #include <sys/systm.h> 43 #include <sys/device.h> 44 45 #include <machine/autoconf.h> 46 #include <sys/bus.h> 47 48 #include <sparc/sparc/cpuunitvar.h> 49 50 struct cpuunit_softc { 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(device_t, cfdata_t, void *); 61 static void cpuunit_attach(device_t, device_t, void *); 62 63 CFATTACH_DECL_NEW(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(device_t parent, cfdata_t 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(device_t parent, device_t self, void *aux) 85 { 86 struct cpuunit_softc *sc = device_private(self); 87 struct mainbus_attach_args *ma = aux; 88 devhandle_t selfh = device_handle(self); 89 int node, error; 90 bus_space_tag_t sbt; 91 92 sc->sc_node = ma->ma_node; 93 sc->sc_st = ma->ma_bustag; 94 95 sc->sc_device_id = prom_getpropint(sc->sc_node, "device-id", -1); 96 sc->sc_board = prom_getpropint(sc->sc_node, "board#", -1); 97 98 printf(": board #%d, ID %d\n", sc->sc_board, sc->sc_device_id); 99 100 /* 101 * Initialize the bus space tag we pass on to our children. 102 */ 103 sbt = sc->sc_bustag = kmem_alloc(sizeof(*sbt), KM_SLEEP); 104 memcpy(sbt, sc->sc_st, sizeof(*sbt)); 105 sbt->cookie = sc; 106 sbt->parent = sc->sc_st; 107 sbt->nranges = 0; 108 sbt->ranges = NULL; 109 110 /* 111 * Collect address translations from the OBP. 112 */ 113 error = prom_getprop(sc->sc_node, "ranges", 114 sizeof(struct openprom_range), &sbt->nranges, &sbt->ranges); 115 if (error) { 116 printf("%s: error %d getting \"ranges\" property\n", 117 device_xname(self), error); 118 panic("cpuunit_attach"); 119 } 120 121 /* Attach the CPU (and possibly bootbus) child nodes. */ 122 for (node = prom_firstchild(sc->sc_node); node != 0; 123 node = prom_nextsibling(node)) { 124 struct cpuunit_attach_args cpua; 125 126 if (cpuunit_setup_attach_args(sc, sbt, node, &cpua)) 127 panic("cpuunit_attach: failed to set up attach args"); 128 129 (void) config_found(self, &cpua, cpuunit_print, 130 CFARGS(.devhandle = prom_node_to_devhandle(selfh, node))); 131 132 cpuunit_destroy_attach_args(&cpua); 133 } 134 } 135 136 static int 137 cpuunit_print(void *aux, const char *pnp) 138 { 139 struct cpuunit_attach_args *cpua = aux; 140 141 if (pnp) 142 aprint_normal("%s at %s", cpua->cpua_name, pnp); 143 144 return (UNCONF); 145 } 146 147 static int 148 cpuunit_setup_attach_args(struct cpuunit_softc *sc, bus_space_tag_t bustag, 149 int node, struct cpuunit_attach_args *cpua) 150 { 151 int n, error; 152 153 memset(cpua, 0, sizeof(*cpua)); 154 155 error = prom_getprop(node, "name", 1, &n, &cpua->cpua_name); 156 if (error) 157 return (error); 158 cpua->cpua_name[n] = '\0'; 159 160 error = prom_getprop(node, "device_type", 1, &n, 161 &cpua->cpua_type); 162 if (error) { 163 free(cpua->cpua_name, M_DEVBUF); 164 return (error); 165 } 166 167 cpua->cpua_bustag = bustag; 168 cpua->cpua_node = node; 169 cpua->cpua_device_id = sc->sc_device_id; 170 171 return (0); 172 } 173 174 static void 175 cpuunit_destroy_attach_args(struct cpuunit_attach_args *cpua) 176 { 177 178 if (cpua->cpua_name != NULL) 179 free(cpua->cpua_name, M_DEVBUF); 180 181 if (cpua->cpua_type != NULL) 182 free(cpua->cpua_type, M_DEVBUF); 183 } 184
Indexes created Sun Oct 25 00:26:45 UTC 2026