1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include <string.h> 30 #include <fm/topo_mod.h> 31 #include <fm/topo_hc.h> 32 #include <libdevinfo.h> 33 #include <limits.h> 34 #include <sys/fm/protocol.h> 35 #include <sys/param.h> 36 #include <sys/systeminfo.h> 37 #include <assert.h> 38 39 #include <hostbridge.h> 40 #include <pcibus.h> 41 #include <did.h> 42 #include <did_props.h> 43 #include <util.h> 44 45 /* 46 * hostbridge.c 47 * Generic code shared by all the hostbridge enumerators 48 */ 49 static void hb_release(topo_mod_t *, tnode_t *); 50 static int hb_label(topo_mod_t *, tnode_t *, topo_version_t, nvlist_t *, 51 nvlist_t **); 52 static int hb_enum(topo_mod_t *, tnode_t *, const char *, topo_instance_t, 53 topo_instance_t, void *, void *); 54 55 extern int platform_hb_label(topo_mod_t *, tnode_t *, nvlist_t *, nvlist_t **); 56 extern int platform_hb_enum(topo_mod_t *, tnode_t *, 57 const char *, topo_instance_t, topo_instance_t); 58 59 extern txprop_t ExHB_common_props[]; 60 extern txprop_t HB_common_props[]; 61 extern txprop_t RC_common_props[]; 62 extern int ExHB_propcnt; 63 extern int HB_propcnt; 64 extern int RC_propcnt; 65 66 static int specific_hb_enum(topo_mod_t *, tnode_t *, const char *, 67 topo_instance_t, topo_instance_t, void *); 68 69 static const topo_modops_t Hb_ops = 70 { hb_enum, hb_release }; 71 static const topo_modinfo_t Hb_info = 72 { HOSTBRIDGE, FM_FMRI_SCHEME_HC, HB_ENUMR_VERS, &Hb_ops }; 73 74 static const topo_method_t Hb_methods[] = { 75 { TOPO_METH_LABEL, TOPO_METH_LABEL_DESC, 76 TOPO_METH_LABEL_VERSION, TOPO_STABILITY_INTERNAL, hb_label }, 77 { NULL } 78 }; 79 80 static const topo_pgroup_info_t hb_auth_pgroup = { 81 FM_FMRI_AUTHORITY, 82 TOPO_STABILITY_PRIVATE, 83 TOPO_STABILITY_PRIVATE, 84 1 85 }; 86 87 int 88 _topo_init(topo_mod_t *modhdl, topo_version_t version) 89 { 90 /* 91 * Turn on module debugging output 92 */ 93 if (getenv("TOPOHBDBG") != NULL) 94 topo_mod_setdebug(modhdl); 95 topo_mod_dprintf(modhdl, "initializing hostbridge enumerator\n"); 96 97 if (version != HB_ENUMR_VERS) 98 return (topo_mod_seterrno(modhdl, EMOD_VER_NEW)); 99 100 if (topo_mod_register(modhdl, &Hb_info, TOPO_VERSION) < 0) { 101 topo_mod_dprintf(modhdl, "hostbridge registration failed: %s\n", 102 topo_mod_errmsg(modhdl)); 103 return (-1); /* mod errno already set */ 104 } 105 106 topo_mod_dprintf(modhdl, "Hostbridge enumr initd\n"); 107 108 return (0); 109 } 110 111 void 112 _topo_fini(topo_mod_t *modhdl) 113 { 114 topo_mod_unregister(modhdl); 115 } 116 117 static int 118 hb_label(topo_mod_t *mp, tnode_t *node, topo_version_t version, 119 nvlist_t *in, nvlist_t **out) 120 { 121 if (version > TOPO_METH_LABEL_VERSION) 122 return (topo_mod_seterrno(mp, EMOD_VER_NEW)); 123 return (platform_hb_label(mp, node, in, out)); 124 } 125 126 static topo_mod_t * 127 pci_enumr_load(topo_mod_t *mp) 128 { 129 topo_mod_t *rp = NULL; 130 131 if ((rp = topo_mod_load(mp, PCI_ENUM, PCI_ENUMR_VERS)) == NULL) { 132 topo_mod_dprintf(mp, 133 "%s enumerator could not load %s.\n", HOSTBRIDGE, PCI_ENUM); 134 } 135 return (rp); 136 } 137 138 /*ARGSUSED*/ 139 static int 140 hb_enum(topo_mod_t *mp, tnode_t *pn, const char *name, topo_instance_t imin, 141 topo_instance_t imax, void *notused, void *data) 142 { 143 int rv; 144 topo_mod_t *pcimod; 145 146 if (strcmp(name, HOSTBRIDGE) != 0) { 147 topo_mod_dprintf(mp, 148 "Currently only know how to enumerate %s components.\n", 149 HOSTBRIDGE); 150 return (0); 151 } 152 /* 153 * Load the pcibus enumerator 154 */ 155 if ((pcimod = pci_enumr_load(mp)) == NULL) 156 return (-1); 157 158 /* 159 * If we're asked to enumerate a whole range of hostbridges, then 160 * we need to find them all. If we're just asked to enumerate a 161 * single hostbridge, we expect our caller to have passed us linked 162 * did_t structures we can use to enumerate the singled out hostbridge. 163 */ 164 if (imin != imax) { 165 166 if (did_hash_init(mp) < 0) { 167 topo_mod_dprintf(mp, 168 "Hash initialization for hostbridge " 169 "enumerator failed.\n"); 170 topo_mod_unload(pcimod); 171 return (-1); 172 } 173 rv = platform_hb_enum(mp, pn, name, imin, imax); 174 did_hash_fini(mp); 175 } else { 176 rv = specific_hb_enum(mp, pn, name, imin, imax, data); 177 } 178 179 return (rv); 180 } 181 182 /*ARGSUSED*/ 183 static void 184 hb_release(topo_mod_t *mp, tnode_t *node) 185 { 186 topo_method_unregister_all(mp, node); 187 } 188 189 static tnode_t * 190 hb_tnode_create(topo_mod_t *mod, tnode_t *parent, 191 const char *name, topo_instance_t i, void *priv) 192 { 193 int err; 194 nvlist_t *fmri; 195 tnode_t *ntn; 196 nvlist_t *auth = topo_mod_auth(mod, parent); 197 198 fmri = topo_mod_hcfmri(mod, parent, FM_HC_SCHEME_VERSION, name, i, 199 NULL, auth, NULL, NULL, NULL); 200 nvlist_free(auth); 201 if (fmri == NULL) { 202 topo_mod_dprintf(mod, 203 "Unable to make nvlist for %s bind: %s.\n", 204 name, topo_mod_errmsg(mod)); 205 return (NULL); 206 } 207 208 ntn = topo_node_bind(mod, parent, name, i, fmri); 209 if (ntn == NULL) { 210 topo_mod_dprintf(mod, 211 "topo_node_bind (%s%d/%s%d) failed: %s\n", 212 topo_node_name(parent), topo_node_instance(parent), 213 name, i, 214 topo_strerror(topo_mod_errno(mod))); 215 nvlist_free(fmri); 216 return (NULL); 217 } 218 nvlist_free(fmri); 219 topo_node_setspecific(ntn, priv); 220 221 if (topo_pgroup_create(ntn, &hb_auth_pgroup, &err) == 0) { 222 (void) topo_prop_inherit(ntn, FM_FMRI_AUTHORITY, 223 FM_FMRI_AUTH_PRODUCT, &err); 224 (void) topo_prop_inherit(ntn, FM_FMRI_AUTHORITY, 225 FM_FMRI_AUTH_CHASSIS, &err); 226 (void) topo_prop_inherit(ntn, FM_FMRI_AUTHORITY, 227 FM_FMRI_AUTH_SERVER, &err); 228 } 229 230 if (topo_method_register(mod, ntn, Hb_methods) < 0) { 231 topo_mod_dprintf(mod, "topo_method_register failed: %s\n", 232 topo_strerror(topo_mod_errno(mod))); 233 topo_node_unbind(ntn); 234 return (NULL); 235 } 236 return (ntn); 237 } 238 239 tnode_t * 240 pcihostbridge_declare(topo_mod_t *mod, tnode_t *parent, di_node_t din, 241 topo_instance_t i) 242 { 243 did_t *pd; 244 tnode_t *ntn; 245 246 if ((pd = did_find(mod, din)) == NULL) 247 return (NULL); 248 if ((ntn = hb_tnode_create(mod, parent, HOSTBRIDGE, i, din)) == NULL) 249 return (NULL); 250 if (did_props_set(ntn, pd, HB_common_props, HB_propcnt) < 0) { 251 topo_node_unbind(ntn); 252 return (NULL); 253 } 254 /* 255 * We expect to find pci buses beneath the hostbridge. 256 */ 257 if (child_range_add(mod, ntn, PCI_BUS, 0, MAX_HB_BUSES) < 0) { 258 topo_node_unbind(ntn); 259 return (NULL); 260 } 261 return (ntn); 262 } 263 264 tnode_t * 265 pciexhostbridge_declare(topo_mod_t *mod, tnode_t *parent, di_node_t din, 266 topo_instance_t hi) 267 { 268 did_t *pd; 269 tnode_t *ntn; 270 271 if ((pd = did_find(mod, din)) == NULL) 272 return (NULL); 273 if ((ntn = hb_tnode_create(mod, parent, HOSTBRIDGE, hi, din)) == NULL) 274 return (NULL); 275 if (did_props_set(ntn, pd, ExHB_common_props, ExHB_propcnt) < 0) { 276 topo_node_unbind(ntn); 277 return (NULL); 278 } 279 /* 280 * We expect to find root complexes beneath the hostbridge. 281 */ 282 if (child_range_add(mod, ntn, PCIEX_ROOT, 0, MAX_HB_BUSES) < 0) { 283 topo_node_unbind(ntn); 284 return (NULL); 285 } 286 return (ntn); 287 } 288 289 tnode_t * 290 pciexrc_declare(topo_mod_t *mod, tnode_t *parent, di_node_t din, 291 topo_instance_t ri) 292 { 293 did_t *pd; 294 tnode_t *ntn; 295 296 if ((pd = did_find(mod, din)) == NULL) 297 return (NULL); 298 did_markrc(pd); 299 if ((ntn = hb_tnode_create(mod, parent, PCIEX_ROOT, ri, din)) == NULL) 300 return (NULL); 301 if (did_props_set(ntn, pd, RC_common_props, RC_propcnt) < 0) { 302 topo_node_unbind(ntn); 303 return (NULL); 304 } 305 /* 306 * We expect to find pci-express buses beneath a root complex 307 */ 308 if (child_range_add(mod, ntn, PCIEX_BUS, 0, MAX_HB_BUSES) < 0) { 309 topo_node_range_destroy(ntn, PCIEX_BUS); 310 return (NULL); 311 } 312 return (ntn); 313 } 314 315 /*ARGSUSED*/ 316 static int 317 specific_hb_enum(topo_mod_t *mod, tnode_t *pn, const char *name, 318 topo_instance_t imin, topo_instance_t imax, void *priv) 319 { 320 tnode_t *hb; 321 did_t *iodid = (did_t *)priv; 322 did_t *didp; 323 int brc = 0; 324 int bus; 325 326 did_setspecific(mod, priv); 327 328 /* 329 * Find the hostbridge of interest 330 */ 331 didp = iodid; 332 for (brc = 0; brc < imin; brc++) 333 didp = did_chain_get(didp); 334 assert(didp != NULL); 335 336 if ((hb = pcihostbridge_declare(mod, pn, did_dinode(didp), imin)) 337 == NULL) { 338 return (-1); 339 } 340 while (didp != NULL) { 341 did_BDF(didp, &bus, NULL, NULL); 342 if (topo_mod_enumerate(mod, 343 hb, PCI_BUS, PCI_BUS, bus, bus, didp) != 0) { 344 return (topo_mod_seterrno(mod, EMOD_PARTIAL_ENUM)); 345 } 346 didp = did_link_get(didp); 347 } 348 349 return (0); 350 } 351