1 /* $NetBSD: central.c,v 1.2 2011/08/01 08:36:39 mrg 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@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/types.h> 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/kernel.h> 34 #include <sys/device.h> 35 #include <sys/conf.h> 36 #include <sys/malloc.h> 37 #include <sys/bus.h> 38 39 #include <machine/autoconf.h> 40 #include <machine/openfirm.h> 41 42 #include <sparc64/dev/centralvar.h> 43 44 struct central_softc { 45 bus_space_tag_t sc_bt; 46 bus_space_tag_t sc_cbt; 47 int sc_node; 48 int sc_nrange; 49 struct central_range *sc_range; 50 }; 51 52 static int central_match(device_t, cfdata_t, void *); 53 static void central_attach(device_t, device_t, void *); 54 55 CFATTACH_DECL_NEW(central, sizeof(struct central_softc), 56 central_match, central_attach, NULL, NULL); 57 58 static int central_print(void *, const char *); 59 static int central_get_string(int, const char *, char **); 60 61 static bus_space_tag_t central_alloc_bus_tag(struct central_softc *); 62 static int _central_bus_map( 63 bus_space_tag_t, 64 bus_addr_t, /*offset*/ 65 bus_size_t, /*size*/ 66 int, /*flags*/ 67 vaddr_t, /* XXX unused -- compat w/sparc */ 68 bus_space_handle_t *); 69 70 static int 71 central_match(device_t parent, cfdata_t match, void *aux) 72 { 73 struct mainbus_attach_args *ma = aux; 74 75 if (strcmp(ma->ma_name, "central") == 0) 76 return (1); 77 return (0); 78 } 79 80 static void 81 central_attach(device_t parent, device_t self, void *aux) 82 { 83 struct central_softc *sc = device_private(self); 84 struct mainbus_attach_args *ma = aux; 85 int node0, node; 86 87 sc->sc_bt = ma->ma_bustag; 88 sc->sc_node = ma->ma_node; 89 sc->sc_cbt = central_alloc_bus_tag(sc); 90 91 prom_getprop(sc->sc_node, "ranges", sizeof(struct central_range), 92 &sc->sc_nrange, (void **)&sc->sc_range); 93 94 printf("\n"); 95 96 node0 = firstchild(sc->sc_node); 97 for (node = node0; node; node = nextsibling(node)) { 98 struct central_attach_args ca; 99 100 bzero(&ca, sizeof(ca)); 101 ca.ca_node = node; 102 ca.ca_bustag = sc->sc_cbt; 103 if (central_get_string(ca.ca_node, "name", &ca.ca_name)) { 104 printf("can't fetch name for node 0x%x\n", node); 105 continue; 106 } 107 108 prom_getprop(node, "reg", sizeof(struct central_reg), 109 &ca.ca_nreg, (void **)&ca.ca_reg); 110 111 (void)config_found(self, (void *)&ca, central_print); 112 113 if (ca.ca_name != NULL) 114 free(ca.ca_name, M_DEVBUF); 115 } 116 } 117 118 static int 119 central_get_string(int node, const char *name, char **buf) 120 { 121 int len; 122 123 len = prom_getproplen(node, name); 124 if (len < 0) 125 return (len); 126 *buf = (char *)malloc(len + 1, M_DEVBUF, M_NOWAIT); 127 if (*buf == NULL) 128 return (-1); 129 130 if (len != 0) 131 prom_getpropstringA(node, name, *buf, len + 1); 132 (*buf)[len] = '\0'; 133 return (0); 134 } 135 136 static int 137 central_print(void *args, const char *busname) 138 { 139 struct central_attach_args *ca = args; 140 char *class; 141 142 if (busname != NULL) { 143 printf("\"%s\" at %s", ca->ca_name, busname); 144 class = prom_getpropstring(ca->ca_node, "device_type"); 145 if (*class != '\0') 146 printf(" class %s", class); 147 } 148 return (UNCONF); 149 } 150 151 static bus_space_tag_t 152 central_alloc_bus_tag(struct central_softc *sc) 153 { 154 struct sparc_bus_space_tag *bt; 155 156 bt = malloc(sizeof(*bt), M_DEVBUF, M_NOWAIT | M_ZERO); 157 if (bt == NULL) 158 panic("central: couldn't alloc bus tag"); 159 160 bt->cookie = sc; 161 bt->parent = sc->sc_bt; 162 #if 0 163 bt->asi = bt->parent->asi; 164 bt->sasi = bt->parent->sasi; 165 #endif 166 bt->sparc_bus_map = _central_bus_map; 167 /* XXX bt->sparc_bus_mmap = central_bus_mmap; */ 168 /* XXX bt->sparc_intr_establish = upa_intr_establish; */ 169 return (bt); 170 } 171 172 static int 173 _central_bus_map(bus_space_tag_t t, bus_addr_t addr, bus_size_t size, int flags, 174 vaddr_t v, bus_space_handle_t *hp) 175 { 176 struct central_softc *sc = t->cookie; 177 int64_t slot = BUS_ADDR_IOSPACE(addr); 178 int64_t offset = BUS_ADDR_PADDR(addr); 179 int i; 180 181 if (t->parent == NULL || t->parent->sparc_bus_map == NULL) { 182 printf("\ncentral_bus_map: invalid parent"); 183 return (EINVAL); 184 } 185 186 187 for (i = 0; i < sc->sc_nrange; i++) { 188 bus_addr_t paddr; 189 190 if (sc->sc_range[i].cspace != slot) 191 continue; 192 193 paddr = offset - sc->sc_range[i].coffset; 194 paddr += sc->sc_range[i].poffset; 195 paddr |= ((bus_addr_t)sc->sc_range[i].pspace << 32); 196 197 return bus_space_map(t->parent, paddr, size, flags, hp); 198 } 199 200 return (EINVAL); 201 } 202