1 /* $NetBSD: central.c,v 1.9 2022/01/22 11:49:17 thorpej Exp $ */ 2 /* $OpenBSD: central.c,v 1.7 2010/11/11 17:58:23 miod Exp $ */ 3 4 /* 5 * Copyright (c) 2004 Jason L. Wright (jason (at) thought.net) 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 20 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 21 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 25 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 26 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 * POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __KERNEL_RCSID(0, "$NetBSD: central.c,v 1.9 2022/01/22 11:49:17 thorpej Exp $"); 32 33 #include <sys/types.h> 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/kernel.h> 37 #include <sys/device.h> 38 #include <sys/conf.h> 39 #include <sys/malloc.h> 40 #include <sys/kmem.h> 41 #include <sys/bus.h> 42 43 #include <machine/autoconf.h> 44 #include <machine/openfirm.h> 45 46 #include <sparc64/dev/centralvar.h> 47 48 struct central_softc { 49 bus_space_tag_t sc_bt; 50 bus_space_tag_t sc_cbt; 51 int sc_node; 52 int sc_nrange; 53 struct central_range *sc_range; 54 }; 55 56 static int central_match(device_t, cfdata_t, void *); 57 static void central_attach(device_t, device_t, void *); 58 59 CFATTACH_DECL_NEW(central, sizeof(struct central_softc), 60 central_match, central_attach, NULL, NULL); 61 62 static int central_print(void *, const char *); 63 static int central_get_string(int, const char *, char **); 64 65 static bus_space_tag_t central_alloc_bus_tag(struct central_softc *); 66 static int _central_bus_map( 67 bus_space_tag_t, 68 bus_addr_t, /*offset*/ 69 bus_size_t, /*size*/ 70 int, /*flags*/ 71 vaddr_t, /* XXX unused -- compat w/sparc */ 72 bus_space_handle_t *); 73 74 static int 75 central_match(device_t parent, cfdata_t match, void *aux) 76 { 77 struct mainbus_attach_args *ma = aux; 78 79 if (strcmp(ma->ma_name, "central") == 0) 80 return (1); 81 return (0); 82 } 83 84 static void 85 central_attach(device_t parent, device_t self, void *aux) 86 { 87 struct central_softc *sc = device_private(self); 88 struct mainbus_attach_args *ma = aux; 89 int node0, node; 90 91 sc->sc_bt = ma->ma_bustag; 92 sc->sc_node = ma->ma_node; 93 sc->sc_cbt = central_alloc_bus_tag(sc); 94 95 prom_getprop(sc->sc_node, "ranges", sizeof(struct central_range), 96 &sc->sc_nrange, (void **)&sc->sc_range); 97 98 printf("\n"); 99 100 devhandle_t selfh = device_handle(self); 101 node0 = firstchild(sc->sc_node); 102 for (node = node0; node; node = nextsibling(node)) { 103 struct central_attach_args ca; 104 105 bzero(&ca, sizeof(ca)); 106 ca.ca_node = node; 107 ca.ca_bustag = sc->sc_cbt; 108 if (central_get_string(ca.ca_node, "name", &ca.ca_name)) { 109 printf("can't fetch name for node 0x%x\n", node); 110 continue; 111 } 112 113 prom_getprop(node, "reg", sizeof(struct central_reg), 114 &ca.ca_nreg, (void **)&ca.ca_reg); 115 116 (void)config_found(self, (void *)&ca, central_print, 117 CFARGS(.devhandle = prom_node_to_devhandle(selfh, 118 ca.ca_node))); 119 120 if (ca.ca_name != NULL) 121 free(ca.ca_name, M_DEVBUF); 122 } 123 } 124 125 static int 126 central_get_string(int node, const char *name, char **buf) 127 { 128 int len; 129 130 len = prom_getproplen(node, name); 131 if (len < 0) 132 return (len); 133 *buf = malloc(len + 1, M_DEVBUF, M_WAITOK); 134 if (len != 0) 135 prom_getpropstringA(node, name, *buf, len + 1); 136 (*buf)[len] = '\0'; 137 return (0); 138 } 139 140 static int 141 central_print(void *args, const char *busname) 142 { 143 struct central_attach_args *ca = args; 144 char *class; 145 146 if (busname != NULL) { 147 printf("\"%s\" at %s", ca->ca_name, busname); 148 class = prom_getpropstring(ca->ca_node, "device_type"); 149 if (*class != '\0') 150 printf(" class %s", class); 151 } 152 return (UNCONF); 153 } 154 155 static bus_space_tag_t 156 central_alloc_bus_tag(struct central_softc *sc) 157 { 158 struct sparc_bus_space_tag *bt; 159 160 bt = kmem_zalloc(sizeof(*bt), KM_SLEEP); 161 bt->cookie = sc; 162 bt->parent = sc->sc_bt; 163 #if 0 164 bt->asi = bt->parent->asi; 165 bt->sasi = bt->parent->sasi; 166 #endif 167 bt->sparc_bus_map = _central_bus_map; 168 /* XXX bt->sparc_bus_mmap = central_bus_mmap; */ 169 /* XXX bt->sparc_intr_establish = upa_intr_establish; */ 170 return (bt); 171 } 172 173 static int 174 _central_bus_map(bus_space_tag_t t, bus_addr_t addr, bus_size_t size, int flags, 175 vaddr_t v, bus_space_handle_t *hp) 176 { 177 struct central_softc *sc = t->cookie; 178 int64_t slot = BUS_ADDR_IOSPACE(addr); 179 int64_t offset = BUS_ADDR_PADDR(addr); 180 int i; 181 182 if (t->parent == NULL || t->parent->sparc_bus_map == NULL) { 183 printf("\ncentral_bus_map: invalid parent"); 184 return (EINVAL); 185 } 186 187 188 for (i = 0; i < sc->sc_nrange; i++) { 189 bus_addr_t paddr; 190 191 if (sc->sc_range[i].cspace != slot) 192 continue; 193 194 paddr = offset - sc->sc_range[i].coffset; 195 paddr += sc->sc_range[i].poffset; 196 paddr |= ((bus_addr_t)sc->sc_range[i].pspace << 32); 197 198 return bus_space_map(t->parent, paddr, size, flags, hp); 199 } 200 201 return (EINVAL); 202 } 203
Indexes created Sat Sep 20 22:09:52 GMT 2025