1 /* 2 * CPU models for s390x 3 * 4 * Copyright 2016 IBM Corp. 5 * 6 * Author(s): David Hildenbrand <dahi@linux.vnet.ibm.com> 7 * 8 * This work is licensed under the terms of the GNU GPL, version 2 or (at 9 * your option) any later version. See the COPYING file in the top-level 10 * directory. 11 */ 12 13 #include "qemu/osdep.h" 14 #include "cpu.h" 15 #include "internal.h" 16 #include "kvm_s390x.h" 17 #include "sysemu/kvm.h" 18 #include "gen-features.h" 19 #include "qapi/error.h" 20 #include "qapi/visitor.h" 21 #include "qemu/error-report.h" 22 #include "qapi/qmp/qerror.h" 23 #include "qapi/qobject-input-visitor.h" 24 #include "qapi/qmp/qbool.h" 25 #ifndef CONFIG_USER_ONLY 26 #include "sysemu/arch_init.h" 27 #endif 28 29 #define CPUDEF_INIT(_type, _gen, _ec_ga, _mha_pow, _hmfai, _name, _desc) \ 30 { \ 31 .name = _name, \ 32 .type = _type, \ 33 .gen = _gen, \ 34 .ec_ga = _ec_ga, \ 35 .mha_pow = _mha_pow, \ 36 .hmfai = _hmfai, \ 37 .desc = _desc, \ 38 .base_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _BASE }, \ 39 .default_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _DEFAULT }, \ 40 .full_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _FULL }, \ 41 } 42 43 /* 44 * CPU definiton list in order of release. For now, base features of a 45 * following release are always a subset of base features of the previous 46 * release. Same is correct for the other feature sets. 47 * A BC release always follows the corresponding EC release. 48 */ 49 static S390CPUDef s390_cpu_defs[] = { 50 CPUDEF_INIT(0x2064, 7, 1, 38, 0x00000000U, "z900", "IBM zSeries 900 GA1"), 51 CPUDEF_INIT(0x2064, 7, 2, 38, 0x00000000U, "z900.2", "IBM zSeries 900 GA2"), 52 CPUDEF_INIT(0x2064, 7, 3, 38, 0x00000000U, "z900.3", "IBM zSeries 900 GA3"), 53 CPUDEF_INIT(0x2066, 7, 3, 38, 0x00000000U, "z800", "IBM zSeries 800 GA1"), 54 CPUDEF_INIT(0x2084, 8, 1, 38, 0x00000000U, "z990", "IBM zSeries 990 GA1"), 55 CPUDEF_INIT(0x2084, 8, 2, 38, 0x00000000U, "z990.2", "IBM zSeries 990 GA2"), 56 CPUDEF_INIT(0x2084, 8, 3, 38, 0x00000000U, "z990.3", "IBM zSeries 990 GA3"), 57 CPUDEF_INIT(0x2086, 8, 3, 38, 0x00000000U, "z890", "IBM zSeries 880 GA1"), 58 CPUDEF_INIT(0x2084, 8, 4, 38, 0x00000000U, "z990.4", "IBM zSeries 990 GA4"), 59 CPUDEF_INIT(0x2086, 8, 4, 38, 0x00000000U, "z890.2", "IBM zSeries 880 GA2"), 60 CPUDEF_INIT(0x2084, 8, 5, 38, 0x00000000U, "z990.5", "IBM zSeries 990 GA5"), 61 CPUDEF_INIT(0x2086, 8, 5, 38, 0x00000000U, "z890.3", "IBM zSeries 880 GA3"), 62 CPUDEF_INIT(0x2094, 9, 1, 40, 0x00000000U, "z9EC", "IBM System z9 EC GA1"), 63 CPUDEF_INIT(0x2094, 9, 2, 40, 0x00000000U, "z9EC.2", "IBM System z9 EC GA2"), 64 CPUDEF_INIT(0x2096, 9, 2, 40, 0x00000000U, "z9BC", "IBM System z9 BC GA1"), 65 CPUDEF_INIT(0x2094, 9, 3, 40, 0x00000000U, "z9EC.3", "IBM System z9 EC GA3"), 66 CPUDEF_INIT(0x2096, 9, 3, 40, 0x00000000U, "z9BC.2", "IBM System z9 BC GA2"), 67 CPUDEF_INIT(0x2097, 10, 1, 43, 0x00000000U, "z10EC", "IBM System z10 EC GA1"), 68 CPUDEF_INIT(0x2097, 10, 2, 43, 0x00000000U, "z10EC.2", "IBM System z10 EC GA2"), 69 CPUDEF_INIT(0x2098, 10, 2, 43, 0x00000000U, "z10BC", "IBM System z10 BC GA1"), 70 CPUDEF_INIT(0x2097, 10, 3, 43, 0x00000000U, "z10EC.3", "IBM System z10 EC GA3"), 71 CPUDEF_INIT(0x2098, 10, 3, 43, 0x00000000U, "z10BC.2", "IBM System z10 BC GA2"), 72 CPUDEF_INIT(0x2817, 11, 1, 44, 0x08000000U, "z196", "IBM zEnterprise 196 GA1"), 73 CPUDEF_INIT(0x2817, 11, 2, 44, 0x08000000U, "z196.2", "IBM zEnterprise 196 GA2"), 74 CPUDEF_INIT(0x2818, 11, 2, 44, 0x08000000U, "z114", "IBM zEnterprise 114 GA1"), 75 CPUDEF_INIT(0x2827, 12, 1, 44, 0x08000000U, "zEC12", "IBM zEnterprise EC12 GA1"), 76 CPUDEF_INIT(0x2827, 12, 2, 44, 0x08000000U, "zEC12.2", "IBM zEnterprise EC12 GA2"), 77 CPUDEF_INIT(0x2828, 12, 2, 44, 0x08000000U, "zBC12", "IBM zEnterprise BC12 GA1"), 78 CPUDEF_INIT(0x2964, 13, 1, 47, 0x08000000U, "z13", "IBM z13 GA1"), 79 CPUDEF_INIT(0x2964, 13, 2, 47, 0x08000000U, "z13.2", "IBM z13 GA2"), 80 CPUDEF_INIT(0x2965, 13, 2, 47, 0x08000000U, "z13s", "IBM z13s GA1"), 81 CPUDEF_INIT(0x3906, 14, 1, 47, 0x08000000U, "z14", "IBM z14 GA1"), 82 }; 83 84 /* features part of a base model but not relevant for finding a base model */ 85 S390FeatBitmap ignored_base_feat; 86 87 void s390_cpudef_featoff(uint8_t gen, uint8_t ec_ga, S390Feat feat) 88 { 89 const S390CPUDef *def; 90 91 def = s390_find_cpu_def(0, gen, ec_ga, NULL); 92 clear_bit(feat, (unsigned long *)&def->default_feat); 93 } 94 95 void s390_cpudef_featoff_greater(uint8_t gen, uint8_t ec_ga, S390Feat feat) 96 { 97 int i; 98 99 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 100 const S390CPUDef *def = &s390_cpu_defs[i]; 101 102 if (def->gen < gen) { 103 continue; 104 } 105 if (def->gen == gen && def->ec_ga < ec_ga) { 106 continue; 107 } 108 109 clear_bit(feat, (unsigned long *)&def->default_feat); 110 } 111 } 112 113 uint32_t s390_get_hmfai(void) 114 { 115 static S390CPU *cpu; 116 117 if (!cpu) { 118 cpu = S390_CPU(qemu_get_cpu(0)); 119 } 120 121 if (!cpu || !cpu->model) { 122 return 0; 123 } 124 return cpu->model->def->hmfai; 125 } 126 127 uint8_t s390_get_mha_pow(void) 128 { 129 static S390CPU *cpu; 130 131 if (!cpu) { 132 cpu = S390_CPU(qemu_get_cpu(0)); 133 } 134 135 if (!cpu || !cpu->model) { 136 return 0; 137 } 138 return cpu->model->def->mha_pow; 139 } 140 141 uint32_t s390_get_ibc_val(void) 142 { 143 uint16_t unblocked_ibc, lowest_ibc; 144 static S390CPU *cpu; 145 146 if (!cpu) { 147 cpu = S390_CPU(qemu_get_cpu(0)); 148 } 149 150 if (!cpu || !cpu->model) { 151 return 0; 152 } 153 unblocked_ibc = s390_ibc_from_cpu_model(cpu->model); 154 lowest_ibc = cpu->model->lowest_ibc; 155 /* the lowest_ibc always has to be <= unblocked_ibc */ 156 if (!lowest_ibc || lowest_ibc > unblocked_ibc) { 157 return 0; 158 } 159 return ((uint32_t) lowest_ibc << 16) | unblocked_ibc; 160 } 161 162 void s390_get_feat_block(S390FeatType type, uint8_t *data) 163 { 164 static S390CPU *cpu; 165 166 if (!cpu) { 167 cpu = S390_CPU(qemu_get_cpu(0)); 168 } 169 170 if (!cpu || !cpu->model) { 171 return; 172 } 173 s390_fill_feat_block(cpu->model->features, type, data); 174 } 175 176 bool s390_has_feat(S390Feat feat) 177 { 178 static S390CPU *cpu; 179 180 if (!cpu) { 181 cpu = S390_CPU(qemu_get_cpu(0)); 182 } 183 184 if (!cpu || !cpu->model) { 185 #ifdef CONFIG_KVM 186 if (kvm_enabled()) { 187 if (feat == S390_FEAT_VECTOR) { 188 return kvm_check_extension(kvm_state, 189 KVM_CAP_S390_VECTOR_REGISTERS); 190 } 191 if (feat == S390_FEAT_RUNTIME_INSTRUMENTATION) { 192 return kvm_s390_get_ri(); 193 } 194 if (feat == S390_FEAT_MSA_EXT_3) { 195 return true; 196 } 197 } 198 #endif 199 return 0; 200 } 201 return test_bit(feat, cpu->model->features); 202 } 203 204 uint8_t s390_get_gen_for_cpu_type(uint16_t type) 205 { 206 int i; 207 208 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 209 if (s390_cpu_defs[i].type == type) { 210 return s390_cpu_defs[i].gen; 211 } 212 } 213 return 0; 214 } 215 216 const S390CPUDef *s390_find_cpu_def(uint16_t type, uint8_t gen, uint8_t ec_ga, 217 S390FeatBitmap features) 218 { 219 const S390CPUDef *last_compatible = NULL; 220 const S390CPUDef *matching_cpu_type = NULL; 221 int i; 222 223 if (!gen) { 224 ec_ga = 0; 225 } 226 if (!gen && type) { 227 gen = s390_get_gen_for_cpu_type(type); 228 } 229 230 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 231 const S390CPUDef *def = &s390_cpu_defs[i]; 232 S390FeatBitmap missing; 233 234 /* don't even try newer generations if we know the generation */ 235 if (gen) { 236 if (def->gen > gen) { 237 break; 238 } else if (def->gen == gen && ec_ga && def->ec_ga > ec_ga) { 239 break; 240 } 241 } 242 243 if (features) { 244 /* see if the model satisfies the minimum features */ 245 bitmap_andnot(missing, def->base_feat, features, S390_FEAT_MAX); 246 /* 247 * Ignore certain features that are in the base model, but not 248 * relevant for the search (esp. MSA subfunctions). 249 */ 250 bitmap_andnot(missing, missing, ignored_base_feat, S390_FEAT_MAX); 251 if (!bitmap_empty(missing, S390_FEAT_MAX)) { 252 break; 253 } 254 } 255 256 /* stop the search if we found the exact model */ 257 if (def->type == type && def->ec_ga == ec_ga) { 258 return def; 259 } 260 /* remember if we've at least seen one with the same cpu type */ 261 if (def->type == type) { 262 matching_cpu_type = def; 263 } 264 last_compatible = def; 265 } 266 /* prefer the model with the same cpu type, esp. don't take the BC for EC */ 267 if (matching_cpu_type) { 268 return matching_cpu_type; 269 } 270 return last_compatible; 271 } 272 273 static void s390_print_cpu_model_list_entry(gpointer data, gpointer user_data) 274 { 275 CPUListState *s = user_data; 276 const S390CPUClass *scc = S390_CPU_CLASS((ObjectClass *)data); 277 char *name = g_strdup(object_class_get_name((ObjectClass *)data)); 278 const char *details = ""; 279 280 if (scc->is_static) { 281 details = "(static, migration-safe)"; 282 } else if (scc->is_migration_safe) { 283 details = "(migration-safe)"; 284 } 285 286 /* strip off the -s390-cpu */ 287 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; 288 (*s->cpu_fprintf)(s->file, "s390 %-15s %-35s %s\n", name, scc->desc, 289 details); 290 g_free(name); 291 } 292 293 static gint s390_cpu_list_compare(gconstpointer a, gconstpointer b) 294 { 295 const S390CPUClass *cc_a = S390_CPU_CLASS((ObjectClass *)a); 296 const S390CPUClass *cc_b = S390_CPU_CLASS((ObjectClass *)b); 297 const char *name_a = object_class_get_name((ObjectClass *)a); 298 const char *name_b = object_class_get_name((ObjectClass *)b); 299 300 /* move qemu and host to the top of the list, qemu first, host second */ 301 if (name_a[0] == 'q') { 302 return -1; 303 } else if (name_b[0] == 'q') { 304 return 1; 305 } else if (name_a[0] == 'h') { 306 return -1; 307 } else if (name_b[0] == 'h') { 308 return 1; 309 } 310 311 /* keep the same order we have in our table (sorted by release date) */ 312 if (cc_a->cpu_def != cc_b->cpu_def) { 313 return cc_a->cpu_def - cc_b->cpu_def; 314 } 315 316 /* exact same definition - list base model first */ 317 return cc_a->is_static ? -1 : 1; 318 } 319 320 void s390_cpu_list(FILE *f, fprintf_function print) 321 { 322 CPUListState s = { 323 .file = f, 324 .cpu_fprintf = print, 325 }; 326 S390FeatGroup group; 327 S390Feat feat; 328 GSList *list; 329 330 list = object_class_get_list(TYPE_S390_CPU, false); 331 list = g_slist_sort(list, s390_cpu_list_compare); 332 g_slist_foreach(list, s390_print_cpu_model_list_entry, &s); 333 g_slist_free(list); 334 335 (*print)(f, "\nRecognized feature flags:\n"); 336 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 337 const S390FeatDef *def = s390_feat_def(feat); 338 339 (*print)(f, "%-20s %-50s\n", def->name, def->desc); 340 } 341 342 (*print)(f, "\nRecognized feature groups:\n"); 343 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 344 const S390FeatGroupDef *def = s390_feat_group_def(group); 345 346 (*print)(f, "%-20s %-50s\n", def->name, def->desc); 347 } 348 } 349 350 static S390CPUModel *get_max_cpu_model(Error **errp); 351 352 #ifndef CONFIG_USER_ONLY 353 static void list_add_feat(const char *name, void *opaque); 354 355 static void check_unavailable_features(const S390CPUModel *max_model, 356 const S390CPUModel *model, 357 strList **unavailable) 358 { 359 S390FeatBitmap missing; 360 361 /* check general model compatibility */ 362 if (max_model->def->gen < model->def->gen || 363 (max_model->def->gen == model->def->gen && 364 max_model->def->ec_ga < model->def->ec_ga)) { 365 list_add_feat("type", unavailable); 366 } 367 368 /* detect missing features if any to properly report them */ 369 bitmap_andnot(missing, model->features, max_model->features, 370 S390_FEAT_MAX); 371 if (!bitmap_empty(missing, S390_FEAT_MAX)) { 372 s390_feat_bitmap_to_ascii(missing, unavailable, list_add_feat); 373 } 374 } 375 376 struct CpuDefinitionInfoListData { 377 CpuDefinitionInfoList *list; 378 S390CPUModel *model; 379 }; 380 381 static void create_cpu_model_list(ObjectClass *klass, void *opaque) 382 { 383 struct CpuDefinitionInfoListData *cpu_list_data = opaque; 384 CpuDefinitionInfoList **cpu_list = &cpu_list_data->list; 385 CpuDefinitionInfoList *entry; 386 CpuDefinitionInfo *info; 387 char *name = g_strdup(object_class_get_name(klass)); 388 S390CPUClass *scc = S390_CPU_CLASS(klass); 389 390 /* strip off the -s390-cpu */ 391 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; 392 info = g_malloc0(sizeof(*info)); 393 info->name = name; 394 info->has_migration_safe = true; 395 info->migration_safe = scc->is_migration_safe; 396 info->q_static = scc->is_static; 397 info->q_typename = g_strdup(object_class_get_name(klass)); 398 /* check for unavailable features */ 399 if (cpu_list_data->model) { 400 Object *obj; 401 S390CPU *sc; 402 obj = object_new(object_class_get_name(klass)); 403 sc = S390_CPU(obj); 404 if (sc->model) { 405 info->has_unavailable_features = true; 406 check_unavailable_features(cpu_list_data->model, sc->model, 407 &info->unavailable_features); 408 } 409 object_unref(obj); 410 } 411 412 entry = g_malloc0(sizeof(*entry)); 413 entry->value = info; 414 entry->next = *cpu_list; 415 *cpu_list = entry; 416 } 417 418 CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp) 419 { 420 struct CpuDefinitionInfoListData list_data = { 421 .list = NULL, 422 }; 423 424 list_data.model = get_max_cpu_model(errp); 425 if (*errp) { 426 error_free(*errp); 427 *errp = NULL; 428 } 429 430 object_class_foreach(create_cpu_model_list, TYPE_S390_CPU, false, 431 &list_data); 432 433 return list_data.list; 434 } 435 436 static void cpu_model_from_info(S390CPUModel *model, const CpuModelInfo *info, 437 Error **errp) 438 { 439 const QDict *qdict = NULL; 440 const QDictEntry *e; 441 Visitor *visitor; 442 ObjectClass *oc; 443 S390CPU *cpu; 444 Object *obj; 445 446 if (info->props) { 447 qdict = qobject_to_qdict(info->props); 448 if (!qdict) { 449 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict"); 450 return; 451 } 452 } 453 454 oc = cpu_class_by_name(TYPE_S390_CPU, info->name); 455 if (!oc) { 456 error_setg(errp, "The CPU definition \'%s\' is unknown.", info->name); 457 return; 458 } 459 if (S390_CPU_CLASS(oc)->kvm_required && !kvm_enabled()) { 460 error_setg(errp, "The CPU definition '%s' requires KVM", info->name); 461 return; 462 } 463 obj = object_new(object_class_get_name(oc)); 464 cpu = S390_CPU(obj); 465 466 if (!cpu->model) { 467 error_setg(errp, "Details about the host CPU model are not available, " 468 "it cannot be used."); 469 object_unref(obj); 470 return; 471 } 472 473 if (qdict) { 474 visitor = qobject_input_visitor_new(info->props); 475 visit_start_struct(visitor, NULL, NULL, 0, errp); 476 if (*errp) { 477 object_unref(obj); 478 return; 479 } 480 for (e = qdict_first(qdict); e; e = qdict_next(qdict, e)) { 481 object_property_set(obj, visitor, e->key, errp); 482 if (*errp) { 483 break; 484 } 485 } 486 if (!*errp) { 487 visit_check_struct(visitor, errp); 488 } 489 visit_end_struct(visitor, NULL); 490 visit_free(visitor); 491 if (*errp) { 492 object_unref(obj); 493 return; 494 } 495 } 496 497 /* copy the model and throw the cpu away */ 498 memcpy(model, cpu->model, sizeof(*model)); 499 object_unref(obj); 500 } 501 502 static void qdict_add_disabled_feat(const char *name, void *opaque) 503 { 504 qdict_put_bool(opaque, name, false); 505 } 506 507 static void qdict_add_enabled_feat(const char *name, void *opaque) 508 { 509 qdict_put_bool(opaque, name, true); 510 } 511 512 /* convert S390CPUDef into a static CpuModelInfo */ 513 static void cpu_info_from_model(CpuModelInfo *info, const S390CPUModel *model, 514 bool delta_changes) 515 { 516 QDict *qdict = qdict_new(); 517 S390FeatBitmap bitmap; 518 519 /* always fallback to the static base model */ 520 info->name = g_strdup_printf("%s-base", model->def->name); 521 522 if (delta_changes) { 523 /* features deleted from the base feature set */ 524 bitmap_andnot(bitmap, model->def->base_feat, model->features, 525 S390_FEAT_MAX); 526 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) { 527 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat); 528 } 529 530 /* features added to the base feature set */ 531 bitmap_andnot(bitmap, model->features, model->def->base_feat, 532 S390_FEAT_MAX); 533 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) { 534 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_enabled_feat); 535 } 536 } else { 537 /* expand all features */ 538 s390_feat_bitmap_to_ascii(model->features, qdict, 539 qdict_add_enabled_feat); 540 bitmap_complement(bitmap, model->features, S390_FEAT_MAX); 541 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat); 542 } 543 544 if (!qdict_size(qdict)) { 545 QDECREF(qdict); 546 } else { 547 info->props = QOBJECT(qdict); 548 info->has_props = true; 549 } 550 } 551 552 CpuModelExpansionInfo *arch_query_cpu_model_expansion(CpuModelExpansionType type, 553 CpuModelInfo *model, 554 Error **errp) 555 { 556 CpuModelExpansionInfo *expansion_info = NULL; 557 S390CPUModel s390_model; 558 bool delta_changes = false; 559 560 /* convert it to our internal representation */ 561 cpu_model_from_info(&s390_model, model, errp); 562 if (*errp) { 563 return NULL; 564 } 565 566 if (type == CPU_MODEL_EXPANSION_TYPE_STATIC) { 567 delta_changes = true; 568 } else if (type != CPU_MODEL_EXPANSION_TYPE_FULL) { 569 error_setg(errp, "The requested expansion type is not supported."); 570 return NULL; 571 } 572 573 /* convert it back to a static representation */ 574 expansion_info = g_malloc0(sizeof(*expansion_info)); 575 expansion_info->model = g_malloc0(sizeof(*expansion_info->model)); 576 cpu_info_from_model(expansion_info->model, &s390_model, delta_changes); 577 return expansion_info; 578 } 579 580 static void list_add_feat(const char *name, void *opaque) 581 { 582 strList **last = (strList **) opaque; 583 strList *entry; 584 585 entry = g_malloc0(sizeof(*entry)); 586 entry->value = g_strdup(name); 587 entry->next = *last; 588 *last = entry; 589 } 590 591 CpuModelCompareInfo *arch_query_cpu_model_comparison(CpuModelInfo *infoa, 592 CpuModelInfo *infob, 593 Error **errp) 594 { 595 CpuModelCompareResult feat_result, gen_result; 596 CpuModelCompareInfo *compare_info; 597 S390FeatBitmap missing, added; 598 S390CPUModel modela, modelb; 599 600 /* convert both models to our internal representation */ 601 cpu_model_from_info(&modela, infoa, errp); 602 if (*errp) { 603 return NULL; 604 } 605 cpu_model_from_info(&modelb, infob, errp); 606 if (*errp) { 607 return NULL; 608 } 609 compare_info = g_malloc0(sizeof(*compare_info)); 610 611 /* check the cpu generation and ga level */ 612 if (modela.def->gen == modelb.def->gen) { 613 if (modela.def->ec_ga == modelb.def->ec_ga) { 614 /* ec and corresponding bc are identical */ 615 gen_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; 616 } else if (modela.def->ec_ga < modelb.def->ec_ga) { 617 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 618 } else { 619 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 620 } 621 } else if (modela.def->gen < modelb.def->gen) { 622 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 623 } else { 624 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 625 } 626 if (gen_result != CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 627 /* both models cannot be made identical */ 628 list_add_feat("type", &compare_info->responsible_properties); 629 } 630 631 /* check the feature set */ 632 if (bitmap_equal(modela.features, modelb.features, S390_FEAT_MAX)) { 633 feat_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; 634 } else { 635 bitmap_andnot(missing, modela.features, modelb.features, S390_FEAT_MAX); 636 s390_feat_bitmap_to_ascii(missing, 637 &compare_info->responsible_properties, 638 list_add_feat); 639 bitmap_andnot(added, modelb.features, modela.features, S390_FEAT_MAX); 640 s390_feat_bitmap_to_ascii(added, &compare_info->responsible_properties, 641 list_add_feat); 642 if (bitmap_empty(missing, S390_FEAT_MAX)) { 643 feat_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 644 } else if (bitmap_empty(added, S390_FEAT_MAX)) { 645 feat_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 646 } else { 647 feat_result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; 648 } 649 } 650 651 /* combine the results */ 652 if (gen_result == feat_result) { 653 compare_info->result = gen_result; 654 } else if (feat_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 655 compare_info->result = gen_result; 656 } else if (gen_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 657 compare_info->result = feat_result; 658 } else { 659 compare_info->result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; 660 } 661 return compare_info; 662 } 663 664 CpuModelBaselineInfo *arch_query_cpu_model_baseline(CpuModelInfo *infoa, 665 CpuModelInfo *infob, 666 Error **errp) 667 { 668 CpuModelBaselineInfo *baseline_info; 669 S390CPUModel modela, modelb, model; 670 uint16_t cpu_type; 671 uint8_t max_gen_ga; 672 uint8_t max_gen; 673 674 /* convert both models to our internal representation */ 675 cpu_model_from_info(&modela, infoa, errp); 676 if (*errp) { 677 return NULL; 678 } 679 680 cpu_model_from_info(&modelb, infob, errp); 681 if (*errp) { 682 return NULL; 683 } 684 685 /* features both models support */ 686 bitmap_and(model.features, modela.features, modelb.features, S390_FEAT_MAX); 687 688 /* detect the maximum model not regarding features */ 689 if (modela.def->gen == modelb.def->gen) { 690 if (modela.def->type == modelb.def->type) { 691 cpu_type = modela.def->type; 692 } else { 693 cpu_type = 0; 694 } 695 max_gen = modela.def->gen; 696 max_gen_ga = MIN(modela.def->ec_ga, modelb.def->ec_ga); 697 } else if (modela.def->gen > modelb.def->gen) { 698 cpu_type = modelb.def->type; 699 max_gen = modelb.def->gen; 700 max_gen_ga = modelb.def->ec_ga; 701 } else { 702 cpu_type = modela.def->type; 703 max_gen = modela.def->gen; 704 max_gen_ga = modela.def->ec_ga; 705 } 706 707 model.def = s390_find_cpu_def(cpu_type, max_gen, max_gen_ga, 708 model.features); 709 /* strip off features not part of the max model */ 710 bitmap_and(model.features, model.features, model.def->full_feat, 711 S390_FEAT_MAX); 712 713 baseline_info = g_malloc0(sizeof(*baseline_info)); 714 baseline_info->model = g_malloc0(sizeof(*baseline_info->model)); 715 cpu_info_from_model(baseline_info->model, &model, true); 716 return baseline_info; 717 } 718 #endif 719 720 static void check_consistency(const S390CPUModel *model) 721 { 722 static int dep[][2] = { 723 { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH }, 724 { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH }, 725 { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH }, 726 { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT }, 727 { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH}, 728 { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT }, 729 { S390_FEAT_DFP_FAST, S390_FEAT_DFP }, 730 { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 }, 731 { S390_FEAT_EDAT_2, S390_FEAT_EDAT}, 732 { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 }, 733 { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 }, 734 { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 }, 735 { S390_FEAT_SIE_CMMA, S390_FEAT_CMM }, 736 { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS }, 737 { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT }, 738 { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 }, 739 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 740 { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR }, 741 { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR }, 742 { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 743 { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP }, 744 { S390_FEAT_CMM_NT, S390_FEAT_CMM }, 745 { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 746 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST }, 747 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 748 { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 }, 749 { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA }, 750 { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA }, 751 { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA }, 752 { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA }, 753 { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA }, 754 { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA }, 755 { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA }, 756 { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA }, 757 { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA }, 758 { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA }, 759 { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA }, 760 { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA }, 761 { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 }, 762 { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 }, 763 { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 }, 764 }; 765 int i; 766 767 for (i = 0; i < ARRAY_SIZE(dep); i++) { 768 if (test_bit(dep[i][0], model->features) && 769 !test_bit(dep[i][1], model->features)) { 770 warn_report("\'%s\' requires \'%s\'.", 771 s390_feat_def(dep[i][0])->name, 772 s390_feat_def(dep[i][1])->name); 773 } 774 } 775 } 776 777 static void error_prepend_missing_feat(const char *name, void *opaque) 778 { 779 error_prepend((Error **) opaque, "%s ", name); 780 } 781 782 static void check_compatibility(const S390CPUModel *max_model, 783 const S390CPUModel *model, Error **errp) 784 { 785 S390FeatBitmap missing; 786 787 if (model->def->gen > max_model->def->gen) { 788 error_setg(errp, "Selected CPU generation is too new. Maximum " 789 "supported model in the configuration: \'%s\'", 790 max_model->def->name); 791 return; 792 } else if (model->def->gen == max_model->def->gen && 793 model->def->ec_ga > max_model->def->ec_ga) { 794 error_setg(errp, "Selected CPU GA level is too new. Maximum " 795 "supported model in the configuration: \'%s\'", 796 max_model->def->name); 797 return; 798 } 799 800 /* detect the missing features to properly report them */ 801 bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX); 802 if (bitmap_empty(missing, S390_FEAT_MAX)) { 803 return; 804 } 805 806 error_setg(errp, " "); 807 s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat); 808 error_prepend(errp, "Some features requested in the CPU model are not " 809 "available in the configuration: "); 810 } 811 812 /** 813 * The base TCG CPU model "qemu" is based on the z900. However, we already 814 * can also emulate some additional features of later CPU generations, so 815 * we add these additional feature bits here. 816 */ 817 static void add_qemu_cpu_model_features(S390FeatBitmap fbm) 818 { 819 static const int feats[] = { 820 S390_FEAT_DAT_ENH, 821 S390_FEAT_IDTE_SEGMENT, 822 S390_FEAT_STFLE, 823 S390_FEAT_EXTENDED_IMMEDIATE, 824 S390_FEAT_EXTENDED_TRANSLATION_2, 825 S390_FEAT_EXTENDED_TRANSLATION_3, 826 S390_FEAT_LONG_DISPLACEMENT, 827 S390_FEAT_LONG_DISPLACEMENT_FAST, 828 S390_FEAT_ETF2_ENH, 829 S390_FEAT_STORE_CLOCK_FAST, 830 S390_FEAT_MOVE_WITH_OPTIONAL_SPEC, 831 S390_FEAT_ETF3_ENH, 832 S390_FEAT_COMPARE_AND_SWAP_AND_STORE, 833 S390_FEAT_COMPARE_AND_SWAP_AND_STORE_2, 834 S390_FEAT_GENERAL_INSTRUCTIONS_EXT, 835 S390_FEAT_EXECUTE_EXT, 836 S390_FEAT_FLOATING_POINT_SUPPPORT_ENH, 837 S390_FEAT_STFLE_45, 838 S390_FEAT_STFLE_49, 839 S390_FEAT_LOCAL_TLB_CLEARING, 840 S390_FEAT_STFLE_53, 841 }; 842 int i; 843 844 for (i = 0; i < ARRAY_SIZE(feats); i++) { 845 set_bit(feats[i], fbm); 846 } 847 } 848 849 static S390CPUModel *get_max_cpu_model(Error **errp) 850 { 851 static S390CPUModel max_model; 852 static bool cached; 853 854 if (cached) { 855 return &max_model; 856 } 857 858 if (kvm_enabled()) { 859 kvm_s390_get_host_cpu_model(&max_model, errp); 860 } else { 861 /* TCG emulates a z900 (with some optional additional features) */ 862 max_model.def = &s390_cpu_defs[0]; 863 bitmap_copy(max_model.features, max_model.def->default_feat, 864 S390_FEAT_MAX); 865 add_qemu_cpu_model_features(max_model.features); 866 } 867 if (!*errp) { 868 cached = true; 869 return &max_model; 870 } 871 return NULL; 872 } 873 874 static inline void apply_cpu_model(const S390CPUModel *model, Error **errp) 875 { 876 #ifndef CONFIG_USER_ONLY 877 static S390CPUModel applied_model; 878 static bool applied; 879 880 /* 881 * We have the same model for all VCPUs. KVM can only be configured before 882 * any VCPUs are defined in KVM. 883 */ 884 if (applied) { 885 if (model && memcmp(&applied_model, model, sizeof(S390CPUModel))) { 886 error_setg(errp, "Mixed CPU models are not supported on s390x."); 887 } 888 return; 889 } 890 891 if (kvm_enabled()) { 892 kvm_s390_apply_cpu_model(model, errp); 893 } 894 895 if (!*errp) { 896 applied = true; 897 if (model) { 898 applied_model = *model; 899 } 900 } 901 #endif 902 } 903 904 void s390_realize_cpu_model(CPUState *cs, Error **errp) 905 { 906 S390CPUClass *xcc = S390_CPU_GET_CLASS(cs); 907 S390CPU *cpu = S390_CPU(cs); 908 const S390CPUModel *max_model; 909 910 if (xcc->kvm_required && !kvm_enabled()) { 911 error_setg(errp, "CPU definition requires KVM"); 912 return; 913 } 914 915 if (!cpu->model) { 916 /* no host model support -> perform compatibility stuff */ 917 apply_cpu_model(NULL, errp); 918 return; 919 } 920 921 max_model = get_max_cpu_model(errp); 922 if (*errp) { 923 error_prepend(errp, "CPU models are not available: "); 924 return; 925 } 926 927 /* copy over properties that can vary */ 928 cpu->model->lowest_ibc = max_model->lowest_ibc; 929 cpu->model->cpu_id = max_model->cpu_id; 930 cpu->model->cpu_id_format = max_model->cpu_id_format; 931 cpu->model->cpu_ver = max_model->cpu_ver; 932 933 check_consistency(cpu->model); 934 check_compatibility(max_model, cpu->model, errp); 935 if (*errp) { 936 return; 937 } 938 939 apply_cpu_model(cpu->model, errp); 940 941 cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model); 942 if (tcg_enabled()) { 943 /* basic mode, write the cpu address into the first 4 bit of the ID */ 944 cpu->env.cpuid = deposit64(cpu->env.cpuid, 54, 4, cpu->env.core_id); 945 } 946 } 947 948 static void get_feature(Object *obj, Visitor *v, const char *name, 949 void *opaque, Error **errp) 950 { 951 S390Feat feat = (S390Feat) opaque; 952 S390CPU *cpu = S390_CPU(obj); 953 bool value; 954 955 if (!cpu->model) { 956 error_setg(errp, "Details about the host CPU model are not available, " 957 "features cannot be queried."); 958 return; 959 } 960 961 value = test_bit(feat, cpu->model->features); 962 visit_type_bool(v, name, &value, errp); 963 } 964 965 static void set_feature(Object *obj, Visitor *v, const char *name, 966 void *opaque, Error **errp) 967 { 968 S390Feat feat = (S390Feat) opaque; 969 DeviceState *dev = DEVICE(obj); 970 S390CPU *cpu = S390_CPU(obj); 971 bool value; 972 973 if (dev->realized) { 974 error_setg(errp, "Attempt to set property '%s' on '%s' after " 975 "it was realized", name, object_get_typename(obj)); 976 return; 977 } else if (!cpu->model) { 978 error_setg(errp, "Details about the host CPU model are not available, " 979 "features cannot be changed."); 980 return; 981 } 982 983 visit_type_bool(v, name, &value, errp); 984 if (*errp) { 985 return; 986 } 987 if (value) { 988 if (!test_bit(feat, cpu->model->def->full_feat)) { 989 error_setg(errp, "Feature '%s' is not available for CPU model '%s'," 990 " it was introduced with later models.", 991 name, cpu->model->def->name); 992 return; 993 } 994 set_bit(feat, cpu->model->features); 995 } else { 996 clear_bit(feat, cpu->model->features); 997 } 998 } 999 1000 static void get_feature_group(Object *obj, Visitor *v, const char *name, 1001 void *opaque, Error **errp) 1002 { 1003 S390FeatGroup group = (S390FeatGroup) opaque; 1004 const S390FeatGroupDef *def = s390_feat_group_def(group); 1005 S390CPU *cpu = S390_CPU(obj); 1006 S390FeatBitmap tmp; 1007 bool value; 1008 1009 if (!cpu->model) { 1010 error_setg(errp, "Details about the host CPU model are not available, " 1011 "features cannot be queried."); 1012 return; 1013 } 1014 1015 /* a group is enabled if all features are enabled */ 1016 bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX); 1017 value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX); 1018 visit_type_bool(v, name, &value, errp); 1019 } 1020 1021 static void set_feature_group(Object *obj, Visitor *v, const char *name, 1022 void *opaque, Error **errp) 1023 { 1024 S390FeatGroup group = (S390FeatGroup) opaque; 1025 const S390FeatGroupDef *def = s390_feat_group_def(group); 1026 DeviceState *dev = DEVICE(obj); 1027 S390CPU *cpu = S390_CPU(obj); 1028 bool value; 1029 1030 if (dev->realized) { 1031 error_setg(errp, "Attempt to set property '%s' on '%s' after " 1032 "it was realized", name, object_get_typename(obj)); 1033 return; 1034 } else if (!cpu->model) { 1035 error_setg(errp, "Details about the host CPU model are not available, " 1036 "features cannot be changed."); 1037 return; 1038 } 1039 1040 visit_type_bool(v, name, &value, errp); 1041 if (*errp) { 1042 return; 1043 } 1044 if (value) { 1045 /* groups are added in one shot, so an intersect is sufficient */ 1046 if (!bitmap_intersects(def->feat, cpu->model->def->full_feat, 1047 S390_FEAT_MAX)) { 1048 error_setg(errp, "Group '%s' is not available for CPU model '%s'," 1049 " it was introduced with later models.", 1050 name, cpu->model->def->name); 1051 return; 1052 } 1053 bitmap_or(cpu->model->features, cpu->model->features, def->feat, 1054 S390_FEAT_MAX); 1055 } else { 1056 bitmap_andnot(cpu->model->features, cpu->model->features, def->feat, 1057 S390_FEAT_MAX); 1058 } 1059 } 1060 1061 void s390_cpu_model_register_props(Object *obj) 1062 { 1063 S390FeatGroup group; 1064 S390Feat feat; 1065 1066 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 1067 const S390FeatDef *def = s390_feat_def(feat); 1068 object_property_add(obj, def->name, "bool", get_feature, 1069 set_feature, NULL, (void *) feat, NULL); 1070 object_property_set_description(obj, def->name, def->desc , NULL); 1071 } 1072 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 1073 const S390FeatGroupDef *def = s390_feat_group_def(group); 1074 object_property_add(obj, def->name, "bool", get_feature_group, 1075 set_feature_group, NULL, (void *) group, NULL); 1076 object_property_set_description(obj, def->name, def->desc , NULL); 1077 } 1078 } 1079 1080 static void s390_cpu_model_initfn(Object *obj) 1081 { 1082 S390CPU *cpu = S390_CPU(obj); 1083 S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu); 1084 1085 cpu->model = g_malloc0(sizeof(*cpu->model)); 1086 /* copy the model, so we can modify it */ 1087 cpu->model->def = xcc->cpu_def; 1088 if (xcc->is_static) { 1089 /* base model - features will never change */ 1090 bitmap_copy(cpu->model->features, cpu->model->def->base_feat, 1091 S390_FEAT_MAX); 1092 } else { 1093 /* latest model - features can change */ 1094 bitmap_copy(cpu->model->features, 1095 cpu->model->def->default_feat, S390_FEAT_MAX); 1096 } 1097 } 1098 1099 #ifdef CONFIG_KVM 1100 static void s390_host_cpu_model_initfn(Object *obj) 1101 { 1102 S390CPU *cpu = S390_CPU(obj); 1103 Error *err = NULL; 1104 1105 if (!kvm_enabled() || !kvm_s390_cpu_models_supported()) { 1106 return; 1107 } 1108 1109 cpu->model = g_malloc0(sizeof(*cpu->model)); 1110 kvm_s390_get_host_cpu_model(cpu->model, &err); 1111 if (err) { 1112 error_report_err(err); 1113 g_free(cpu->model); 1114 /* fallback to unsupported cpu models */ 1115 cpu->model = NULL; 1116 } 1117 } 1118 #endif 1119 1120 static void s390_qemu_cpu_model_initfn(Object *obj) 1121 { 1122 static S390CPUDef s390_qemu_cpu_defs; 1123 S390CPU *cpu = S390_CPU(obj); 1124 1125 cpu->model = g_malloc0(sizeof(*cpu->model)); 1126 /* TCG emulates a z900 (with some optional additional features) */ 1127 memcpy(&s390_qemu_cpu_defs, &s390_cpu_defs[0], sizeof(s390_qemu_cpu_defs)); 1128 add_qemu_cpu_model_features(s390_qemu_cpu_defs.full_feat); 1129 cpu->model->def = &s390_qemu_cpu_defs; 1130 bitmap_copy(cpu->model->features, cpu->model->def->default_feat, 1131 S390_FEAT_MAX); 1132 } 1133 1134 static void s390_cpu_model_finalize(Object *obj) 1135 { 1136 S390CPU *cpu = S390_CPU(obj); 1137 1138 g_free(cpu->model); 1139 cpu->model = NULL; 1140 } 1141 1142 static bool get_is_migration_safe(Object *obj, Error **errp) 1143 { 1144 return S390_CPU_GET_CLASS(obj)->is_migration_safe; 1145 } 1146 1147 static bool get_is_static(Object *obj, Error **errp) 1148 { 1149 return S390_CPU_GET_CLASS(obj)->is_static; 1150 } 1151 1152 static char *get_description(Object *obj, Error **errp) 1153 { 1154 return g_strdup(S390_CPU_GET_CLASS(obj)->desc); 1155 } 1156 1157 void s390_cpu_model_class_register_props(ObjectClass *oc) 1158 { 1159 object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe, 1160 NULL, NULL); 1161 object_class_property_add_bool(oc, "static", get_is_static, 1162 NULL, NULL); 1163 object_class_property_add_str(oc, "description", get_description, NULL, 1164 NULL); 1165 } 1166 1167 #ifdef CONFIG_KVM 1168 static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data) 1169 { 1170 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1171 1172 xcc->kvm_required = true; 1173 xcc->desc = "KVM only: All recognized features"; 1174 } 1175 #endif 1176 1177 static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data) 1178 { 1179 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1180 1181 /* all base models are migration safe */ 1182 xcc->cpu_def = (const S390CPUDef *) data; 1183 xcc->is_migration_safe = true; 1184 xcc->is_static = true; 1185 xcc->desc = xcc->cpu_def->desc; 1186 } 1187 1188 static void s390_cpu_model_class_init(ObjectClass *oc, void *data) 1189 { 1190 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1191 1192 /* model that can change between QEMU versions */ 1193 xcc->cpu_def = (const S390CPUDef *) data; 1194 xcc->is_migration_safe = true; 1195 xcc->desc = xcc->cpu_def->desc; 1196 } 1197 1198 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data) 1199 { 1200 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1201 1202 xcc->is_migration_safe = true; 1203 xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s", 1204 qemu_hw_version()); 1205 } 1206 1207 #define S390_CPU_TYPE_SUFFIX "-" TYPE_S390_CPU 1208 #define S390_CPU_TYPE_NAME(name) (name S390_CPU_TYPE_SUFFIX) 1209 1210 /* Generate type name for a cpu model. Caller has to free the string. */ 1211 static char *s390_cpu_type_name(const char *model_name) 1212 { 1213 return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name); 1214 } 1215 1216 /* Generate type name for a base cpu model. Caller has to free the string. */ 1217 static char *s390_base_cpu_type_name(const char *model_name) 1218 { 1219 return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name); 1220 } 1221 1222 ObjectClass *s390_cpu_class_by_name(const char *name) 1223 { 1224 char *typename = s390_cpu_type_name(name); 1225 ObjectClass *oc; 1226 1227 oc = object_class_by_name(typename); 1228 g_free(typename); 1229 return oc; 1230 } 1231 1232 const char *s390_default_cpu_model_name(void) 1233 { 1234 if (kvm_enabled()) { 1235 return "host"; 1236 } 1237 return "qemu"; 1238 } 1239 1240 static const TypeInfo qemu_s390_cpu_type_info = { 1241 .name = S390_CPU_TYPE_NAME("qemu"), 1242 .parent = TYPE_S390_CPU, 1243 .instance_init = s390_qemu_cpu_model_initfn, 1244 .instance_finalize = s390_cpu_model_finalize, 1245 .class_init = s390_qemu_cpu_model_class_init, 1246 }; 1247 1248 #ifdef CONFIG_KVM 1249 static const TypeInfo host_s390_cpu_type_info = { 1250 .name = S390_CPU_TYPE_NAME("host"), 1251 .parent = TYPE_S390_CPU, 1252 .instance_init = s390_host_cpu_model_initfn, 1253 .instance_finalize = s390_cpu_model_finalize, 1254 .class_init = s390_host_cpu_model_class_init, 1255 }; 1256 #endif 1257 1258 static void init_ignored_base_feat(void) 1259 { 1260 static const int feats[] = { 1261 /* MSA subfunctions that could not be available on certain machines */ 1262 S390_FEAT_KMAC_DEA, 1263 S390_FEAT_KMAC_TDEA_128, 1264 S390_FEAT_KMAC_TDEA_192, 1265 S390_FEAT_KMC_DEA, 1266 S390_FEAT_KMC_TDEA_128, 1267 S390_FEAT_KMC_TDEA_192, 1268 S390_FEAT_KM_DEA, 1269 S390_FEAT_KM_TDEA_128, 1270 S390_FEAT_KM_TDEA_192, 1271 S390_FEAT_KIMD_SHA_1, 1272 S390_FEAT_KLMD_SHA_1, 1273 }; 1274 int i; 1275 1276 for (i = 0; i < ARRAY_SIZE(feats); i++) { 1277 set_bit(feats[i], ignored_base_feat); 1278 } 1279 } 1280 1281 static void register_types(void) 1282 { 1283 int i; 1284 1285 init_ignored_base_feat(); 1286 1287 /* init all bitmaps from gnerated data initially */ 1288 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 1289 s390_init_feat_bitmap(s390_cpu_defs[i].base_init, 1290 s390_cpu_defs[i].base_feat); 1291 s390_init_feat_bitmap(s390_cpu_defs[i].default_init, 1292 s390_cpu_defs[i].default_feat); 1293 s390_init_feat_bitmap(s390_cpu_defs[i].full_init, 1294 s390_cpu_defs[i].full_feat); 1295 } 1296 1297 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 1298 char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name); 1299 TypeInfo ti_base = { 1300 .name = base_name, 1301 .parent = TYPE_S390_CPU, 1302 .instance_init = s390_cpu_model_initfn, 1303 .instance_finalize = s390_cpu_model_finalize, 1304 .class_init = s390_base_cpu_model_class_init, 1305 .class_data = (void *) &s390_cpu_defs[i], 1306 }; 1307 char *name = s390_cpu_type_name(s390_cpu_defs[i].name); 1308 TypeInfo ti = { 1309 .name = name, 1310 .parent = TYPE_S390_CPU, 1311 .instance_init = s390_cpu_model_initfn, 1312 .instance_finalize = s390_cpu_model_finalize, 1313 .class_init = s390_cpu_model_class_init, 1314 .class_data = (void *) &s390_cpu_defs[i], 1315 }; 1316 1317 type_register_static(&ti_base); 1318 type_register_static(&ti); 1319 g_free(base_name); 1320 g_free(name); 1321 } 1322 1323 type_register_static(&qemu_s390_cpu_type_info); 1324 #ifdef CONFIG_KVM 1325 type_register_static(&host_s390_cpu_type_info); 1326 #endif 1327 } 1328 1329 type_init(register_types) 1330