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 if (feat == S390_FEAT_ZPCI) { 200 return true; 201 } 202 return 0; 203 } 204 return test_bit(feat, cpu->model->features); 205 } 206 207 uint8_t s390_get_gen_for_cpu_type(uint16_t type) 208 { 209 int i; 210 211 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 212 if (s390_cpu_defs[i].type == type) { 213 return s390_cpu_defs[i].gen; 214 } 215 } 216 return 0; 217 } 218 219 const S390CPUDef *s390_find_cpu_def(uint16_t type, uint8_t gen, uint8_t ec_ga, 220 S390FeatBitmap features) 221 { 222 const S390CPUDef *last_compatible = NULL; 223 const S390CPUDef *matching_cpu_type = NULL; 224 int i; 225 226 if (!gen) { 227 ec_ga = 0; 228 } 229 if (!gen && type) { 230 gen = s390_get_gen_for_cpu_type(type); 231 } 232 233 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 234 const S390CPUDef *def = &s390_cpu_defs[i]; 235 S390FeatBitmap missing; 236 237 /* don't even try newer generations if we know the generation */ 238 if (gen) { 239 if (def->gen > gen) { 240 break; 241 } else if (def->gen == gen && ec_ga && def->ec_ga > ec_ga) { 242 break; 243 } 244 } 245 246 if (features) { 247 /* see if the model satisfies the minimum features */ 248 bitmap_andnot(missing, def->base_feat, features, S390_FEAT_MAX); 249 /* 250 * Ignore certain features that are in the base model, but not 251 * relevant for the search (esp. MSA subfunctions). 252 */ 253 bitmap_andnot(missing, missing, ignored_base_feat, S390_FEAT_MAX); 254 if (!bitmap_empty(missing, S390_FEAT_MAX)) { 255 break; 256 } 257 } 258 259 /* stop the search if we found the exact model */ 260 if (def->type == type && def->ec_ga == ec_ga) { 261 return def; 262 } 263 /* remember if we've at least seen one with the same cpu type */ 264 if (def->type == type) { 265 matching_cpu_type = def; 266 } 267 last_compatible = def; 268 } 269 /* prefer the model with the same cpu type, esp. don't take the BC for EC */ 270 if (matching_cpu_type) { 271 return matching_cpu_type; 272 } 273 return last_compatible; 274 } 275 276 static void s390_print_cpu_model_list_entry(gpointer data, gpointer user_data) 277 { 278 CPUListState *s = user_data; 279 const S390CPUClass *scc = S390_CPU_CLASS((ObjectClass *)data); 280 char *name = g_strdup(object_class_get_name((ObjectClass *)data)); 281 const char *details = ""; 282 283 if (scc->is_static) { 284 details = "(static, migration-safe)"; 285 } else if (scc->is_migration_safe) { 286 details = "(migration-safe)"; 287 } 288 289 /* strip off the -s390-cpu */ 290 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; 291 (*s->cpu_fprintf)(s->file, "s390 %-15s %-35s %s\n", name, scc->desc, 292 details); 293 g_free(name); 294 } 295 296 static gint s390_cpu_list_compare(gconstpointer a, gconstpointer b) 297 { 298 const S390CPUClass *cc_a = S390_CPU_CLASS((ObjectClass *)a); 299 const S390CPUClass *cc_b = S390_CPU_CLASS((ObjectClass *)b); 300 const char *name_a = object_class_get_name((ObjectClass *)a); 301 const char *name_b = object_class_get_name((ObjectClass *)b); 302 303 /* move qemu and host to the top of the list, qemu first, host second */ 304 if (name_a[0] == 'q') { 305 return -1; 306 } else if (name_b[0] == 'q') { 307 return 1; 308 } else if (name_a[0] == 'h') { 309 return -1; 310 } else if (name_b[0] == 'h') { 311 return 1; 312 } 313 314 /* keep the same order we have in our table (sorted by release date) */ 315 if (cc_a->cpu_def != cc_b->cpu_def) { 316 return cc_a->cpu_def - cc_b->cpu_def; 317 } 318 319 /* exact same definition - list base model first */ 320 return cc_a->is_static ? -1 : 1; 321 } 322 323 void s390_cpu_list(FILE *f, fprintf_function print) 324 { 325 CPUListState s = { 326 .file = f, 327 .cpu_fprintf = print, 328 }; 329 S390FeatGroup group; 330 S390Feat feat; 331 GSList *list; 332 333 list = object_class_get_list(TYPE_S390_CPU, false); 334 list = g_slist_sort(list, s390_cpu_list_compare); 335 g_slist_foreach(list, s390_print_cpu_model_list_entry, &s); 336 g_slist_free(list); 337 338 (*print)(f, "\nRecognized feature flags:\n"); 339 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 340 const S390FeatDef *def = s390_feat_def(feat); 341 342 (*print)(f, "%-20s %-50s\n", def->name, def->desc); 343 } 344 345 (*print)(f, "\nRecognized feature groups:\n"); 346 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 347 const S390FeatGroupDef *def = s390_feat_group_def(group); 348 349 (*print)(f, "%-20s %-50s\n", def->name, def->desc); 350 } 351 } 352 353 static S390CPUModel *get_max_cpu_model(Error **errp); 354 355 #ifndef CONFIG_USER_ONLY 356 static void list_add_feat(const char *name, void *opaque); 357 358 static void check_unavailable_features(const S390CPUModel *max_model, 359 const S390CPUModel *model, 360 strList **unavailable) 361 { 362 S390FeatBitmap missing; 363 364 /* check general model compatibility */ 365 if (max_model->def->gen < model->def->gen || 366 (max_model->def->gen == model->def->gen && 367 max_model->def->ec_ga < model->def->ec_ga)) { 368 list_add_feat("type", unavailable); 369 } 370 371 /* detect missing features if any to properly report them */ 372 bitmap_andnot(missing, model->features, max_model->features, 373 S390_FEAT_MAX); 374 if (!bitmap_empty(missing, S390_FEAT_MAX)) { 375 s390_feat_bitmap_to_ascii(missing, unavailable, list_add_feat); 376 } 377 } 378 379 struct CpuDefinitionInfoListData { 380 CpuDefinitionInfoList *list; 381 S390CPUModel *model; 382 }; 383 384 static void create_cpu_model_list(ObjectClass *klass, void *opaque) 385 { 386 struct CpuDefinitionInfoListData *cpu_list_data = opaque; 387 CpuDefinitionInfoList **cpu_list = &cpu_list_data->list; 388 CpuDefinitionInfoList *entry; 389 CpuDefinitionInfo *info; 390 char *name = g_strdup(object_class_get_name(klass)); 391 S390CPUClass *scc = S390_CPU_CLASS(klass); 392 393 /* strip off the -s390-cpu */ 394 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; 395 info = g_malloc0(sizeof(*info)); 396 info->name = name; 397 info->has_migration_safe = true; 398 info->migration_safe = scc->is_migration_safe; 399 info->q_static = scc->is_static; 400 info->q_typename = g_strdup(object_class_get_name(klass)); 401 /* check for unavailable features */ 402 if (cpu_list_data->model) { 403 Object *obj; 404 S390CPU *sc; 405 obj = object_new(object_class_get_name(klass)); 406 sc = S390_CPU(obj); 407 if (sc->model) { 408 info->has_unavailable_features = true; 409 check_unavailable_features(cpu_list_data->model, sc->model, 410 &info->unavailable_features); 411 } 412 object_unref(obj); 413 } 414 415 entry = g_malloc0(sizeof(*entry)); 416 entry->value = info; 417 entry->next = *cpu_list; 418 *cpu_list = entry; 419 } 420 421 CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp) 422 { 423 struct CpuDefinitionInfoListData list_data = { 424 .list = NULL, 425 }; 426 427 list_data.model = get_max_cpu_model(errp); 428 if (*errp) { 429 error_free(*errp); 430 *errp = NULL; 431 } 432 433 object_class_foreach(create_cpu_model_list, TYPE_S390_CPU, false, 434 &list_data); 435 436 return list_data.list; 437 } 438 439 static void cpu_model_from_info(S390CPUModel *model, const CpuModelInfo *info, 440 Error **errp) 441 { 442 const QDict *qdict = NULL; 443 const QDictEntry *e; 444 Visitor *visitor; 445 ObjectClass *oc; 446 S390CPU *cpu; 447 Object *obj; 448 449 if (info->props) { 450 qdict = qobject_to_qdict(info->props); 451 if (!qdict) { 452 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict"); 453 return; 454 } 455 } 456 457 oc = cpu_class_by_name(TYPE_S390_CPU, info->name); 458 if (!oc) { 459 error_setg(errp, "The CPU definition \'%s\' is unknown.", info->name); 460 return; 461 } 462 if (S390_CPU_CLASS(oc)->kvm_required && !kvm_enabled()) { 463 error_setg(errp, "The CPU definition '%s' requires KVM", info->name); 464 return; 465 } 466 obj = object_new(object_class_get_name(oc)); 467 cpu = S390_CPU(obj); 468 469 if (!cpu->model) { 470 error_setg(errp, "Details about the host CPU model are not available, " 471 "it cannot be used."); 472 object_unref(obj); 473 return; 474 } 475 476 if (qdict) { 477 visitor = qobject_input_visitor_new(info->props); 478 visit_start_struct(visitor, NULL, NULL, 0, errp); 479 if (*errp) { 480 object_unref(obj); 481 return; 482 } 483 for (e = qdict_first(qdict); e; e = qdict_next(qdict, e)) { 484 object_property_set(obj, visitor, e->key, errp); 485 if (*errp) { 486 break; 487 } 488 } 489 if (!*errp) { 490 visit_check_struct(visitor, errp); 491 } 492 visit_end_struct(visitor, NULL); 493 visit_free(visitor); 494 if (*errp) { 495 object_unref(obj); 496 return; 497 } 498 } 499 500 /* copy the model and throw the cpu away */ 501 memcpy(model, cpu->model, sizeof(*model)); 502 object_unref(obj); 503 } 504 505 static void qdict_add_disabled_feat(const char *name, void *opaque) 506 { 507 qdict_put_bool(opaque, name, false); 508 } 509 510 static void qdict_add_enabled_feat(const char *name, void *opaque) 511 { 512 qdict_put_bool(opaque, name, true); 513 } 514 515 /* convert S390CPUDef into a static CpuModelInfo */ 516 static void cpu_info_from_model(CpuModelInfo *info, const S390CPUModel *model, 517 bool delta_changes) 518 { 519 QDict *qdict = qdict_new(); 520 S390FeatBitmap bitmap; 521 522 /* always fallback to the static base model */ 523 info->name = g_strdup_printf("%s-base", model->def->name); 524 525 if (delta_changes) { 526 /* features deleted from the base feature set */ 527 bitmap_andnot(bitmap, model->def->base_feat, model->features, 528 S390_FEAT_MAX); 529 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) { 530 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat); 531 } 532 533 /* features added to the base feature set */ 534 bitmap_andnot(bitmap, model->features, model->def->base_feat, 535 S390_FEAT_MAX); 536 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) { 537 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_enabled_feat); 538 } 539 } else { 540 /* expand all features */ 541 s390_feat_bitmap_to_ascii(model->features, qdict, 542 qdict_add_enabled_feat); 543 bitmap_complement(bitmap, model->features, S390_FEAT_MAX); 544 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat); 545 } 546 547 if (!qdict_size(qdict)) { 548 QDECREF(qdict); 549 } else { 550 info->props = QOBJECT(qdict); 551 info->has_props = true; 552 } 553 } 554 555 CpuModelExpansionInfo *arch_query_cpu_model_expansion(CpuModelExpansionType type, 556 CpuModelInfo *model, 557 Error **errp) 558 { 559 CpuModelExpansionInfo *expansion_info = NULL; 560 S390CPUModel s390_model; 561 bool delta_changes = false; 562 563 /* convert it to our internal representation */ 564 cpu_model_from_info(&s390_model, model, errp); 565 if (*errp) { 566 return NULL; 567 } 568 569 if (type == CPU_MODEL_EXPANSION_TYPE_STATIC) { 570 delta_changes = true; 571 } else if (type != CPU_MODEL_EXPANSION_TYPE_FULL) { 572 error_setg(errp, "The requested expansion type is not supported."); 573 return NULL; 574 } 575 576 /* convert it back to a static representation */ 577 expansion_info = g_malloc0(sizeof(*expansion_info)); 578 expansion_info->model = g_malloc0(sizeof(*expansion_info->model)); 579 cpu_info_from_model(expansion_info->model, &s390_model, delta_changes); 580 return expansion_info; 581 } 582 583 static void list_add_feat(const char *name, void *opaque) 584 { 585 strList **last = (strList **) opaque; 586 strList *entry; 587 588 entry = g_malloc0(sizeof(*entry)); 589 entry->value = g_strdup(name); 590 entry->next = *last; 591 *last = entry; 592 } 593 594 CpuModelCompareInfo *arch_query_cpu_model_comparison(CpuModelInfo *infoa, 595 CpuModelInfo *infob, 596 Error **errp) 597 { 598 CpuModelCompareResult feat_result, gen_result; 599 CpuModelCompareInfo *compare_info; 600 S390FeatBitmap missing, added; 601 S390CPUModel modela, modelb; 602 603 /* convert both models to our internal representation */ 604 cpu_model_from_info(&modela, infoa, errp); 605 if (*errp) { 606 return NULL; 607 } 608 cpu_model_from_info(&modelb, infob, errp); 609 if (*errp) { 610 return NULL; 611 } 612 compare_info = g_malloc0(sizeof(*compare_info)); 613 614 /* check the cpu generation and ga level */ 615 if (modela.def->gen == modelb.def->gen) { 616 if (modela.def->ec_ga == modelb.def->ec_ga) { 617 /* ec and corresponding bc are identical */ 618 gen_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; 619 } else if (modela.def->ec_ga < modelb.def->ec_ga) { 620 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 621 } else { 622 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 623 } 624 } else if (modela.def->gen < modelb.def->gen) { 625 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 626 } else { 627 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 628 } 629 if (gen_result != CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 630 /* both models cannot be made identical */ 631 list_add_feat("type", &compare_info->responsible_properties); 632 } 633 634 /* check the feature set */ 635 if (bitmap_equal(modela.features, modelb.features, S390_FEAT_MAX)) { 636 feat_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; 637 } else { 638 bitmap_andnot(missing, modela.features, modelb.features, S390_FEAT_MAX); 639 s390_feat_bitmap_to_ascii(missing, 640 &compare_info->responsible_properties, 641 list_add_feat); 642 bitmap_andnot(added, modelb.features, modela.features, S390_FEAT_MAX); 643 s390_feat_bitmap_to_ascii(added, &compare_info->responsible_properties, 644 list_add_feat); 645 if (bitmap_empty(missing, S390_FEAT_MAX)) { 646 feat_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 647 } else if (bitmap_empty(added, S390_FEAT_MAX)) { 648 feat_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 649 } else { 650 feat_result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; 651 } 652 } 653 654 /* combine the results */ 655 if (gen_result == feat_result) { 656 compare_info->result = gen_result; 657 } else if (feat_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 658 compare_info->result = gen_result; 659 } else if (gen_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 660 compare_info->result = feat_result; 661 } else { 662 compare_info->result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; 663 } 664 return compare_info; 665 } 666 667 CpuModelBaselineInfo *arch_query_cpu_model_baseline(CpuModelInfo *infoa, 668 CpuModelInfo *infob, 669 Error **errp) 670 { 671 CpuModelBaselineInfo *baseline_info; 672 S390CPUModel modela, modelb, model; 673 uint16_t cpu_type; 674 uint8_t max_gen_ga; 675 uint8_t max_gen; 676 677 /* convert both models to our internal representation */ 678 cpu_model_from_info(&modela, infoa, errp); 679 if (*errp) { 680 return NULL; 681 } 682 683 cpu_model_from_info(&modelb, infob, errp); 684 if (*errp) { 685 return NULL; 686 } 687 688 /* features both models support */ 689 bitmap_and(model.features, modela.features, modelb.features, S390_FEAT_MAX); 690 691 /* detect the maximum model not regarding features */ 692 if (modela.def->gen == modelb.def->gen) { 693 if (modela.def->type == modelb.def->type) { 694 cpu_type = modela.def->type; 695 } else { 696 cpu_type = 0; 697 } 698 max_gen = modela.def->gen; 699 max_gen_ga = MIN(modela.def->ec_ga, modelb.def->ec_ga); 700 } else if (modela.def->gen > modelb.def->gen) { 701 cpu_type = modelb.def->type; 702 max_gen = modelb.def->gen; 703 max_gen_ga = modelb.def->ec_ga; 704 } else { 705 cpu_type = modela.def->type; 706 max_gen = modela.def->gen; 707 max_gen_ga = modela.def->ec_ga; 708 } 709 710 model.def = s390_find_cpu_def(cpu_type, max_gen, max_gen_ga, 711 model.features); 712 /* strip off features not part of the max model */ 713 bitmap_and(model.features, model.features, model.def->full_feat, 714 S390_FEAT_MAX); 715 716 baseline_info = g_malloc0(sizeof(*baseline_info)); 717 baseline_info->model = g_malloc0(sizeof(*baseline_info->model)); 718 cpu_info_from_model(baseline_info->model, &model, true); 719 return baseline_info; 720 } 721 #endif 722 723 static void check_consistency(const S390CPUModel *model) 724 { 725 static int dep[][2] = { 726 { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH }, 727 { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH }, 728 { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH }, 729 { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT }, 730 { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH}, 731 { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT }, 732 { S390_FEAT_DFP_FAST, S390_FEAT_DFP }, 733 { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 }, 734 { S390_FEAT_EDAT_2, S390_FEAT_EDAT}, 735 { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 }, 736 { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 }, 737 { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 }, 738 { S390_FEAT_SIE_CMMA, S390_FEAT_CMM }, 739 { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS }, 740 { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT }, 741 { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 }, 742 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 743 { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR }, 744 { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR }, 745 { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 746 { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP }, 747 { S390_FEAT_CMM_NT, S390_FEAT_CMM }, 748 { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 749 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST }, 750 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 751 { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 }, 752 { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA }, 753 { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA }, 754 { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA }, 755 { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA }, 756 { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA }, 757 { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA }, 758 { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA }, 759 { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA }, 760 { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA }, 761 { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA }, 762 { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA }, 763 { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA }, 764 { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 }, 765 { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 }, 766 { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 }, 767 }; 768 int i; 769 770 for (i = 0; i < ARRAY_SIZE(dep); i++) { 771 if (test_bit(dep[i][0], model->features) && 772 !test_bit(dep[i][1], model->features)) { 773 warn_report("\'%s\' requires \'%s\'.", 774 s390_feat_def(dep[i][0])->name, 775 s390_feat_def(dep[i][1])->name); 776 } 777 } 778 } 779 780 static void error_prepend_missing_feat(const char *name, void *opaque) 781 { 782 error_prepend((Error **) opaque, "%s ", name); 783 } 784 785 static void check_compatibility(const S390CPUModel *max_model, 786 const S390CPUModel *model, Error **errp) 787 { 788 S390FeatBitmap missing; 789 790 if (model->def->gen > max_model->def->gen) { 791 error_setg(errp, "Selected CPU generation is too new. Maximum " 792 "supported model in the configuration: \'%s\'", 793 max_model->def->name); 794 return; 795 } else if (model->def->gen == max_model->def->gen && 796 model->def->ec_ga > max_model->def->ec_ga) { 797 error_setg(errp, "Selected CPU GA level is too new. Maximum " 798 "supported model in the configuration: \'%s\'", 799 max_model->def->name); 800 return; 801 } 802 803 /* detect the missing features to properly report them */ 804 bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX); 805 if (bitmap_empty(missing, S390_FEAT_MAX)) { 806 return; 807 } 808 809 error_setg(errp, " "); 810 s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat); 811 error_prepend(errp, "Some features requested in the CPU model are not " 812 "available in the configuration: "); 813 } 814 815 /** 816 * The base TCG CPU model "qemu" is based on the z900. However, we already 817 * can also emulate some additional features of later CPU generations, so 818 * we add these additional feature bits here. 819 */ 820 static void add_qemu_cpu_model_features(S390FeatBitmap fbm) 821 { 822 static const int feats[] = { 823 S390_FEAT_DAT_ENH, 824 S390_FEAT_IDTE_SEGMENT, 825 S390_FEAT_STFLE, 826 S390_FEAT_EXTENDED_IMMEDIATE, 827 S390_FEAT_EXTENDED_TRANSLATION_2, 828 S390_FEAT_EXTENDED_TRANSLATION_3, 829 S390_FEAT_LONG_DISPLACEMENT, 830 S390_FEAT_LONG_DISPLACEMENT_FAST, 831 S390_FEAT_ETF2_ENH, 832 S390_FEAT_STORE_CLOCK_FAST, 833 S390_FEAT_MOVE_WITH_OPTIONAL_SPEC, 834 S390_FEAT_ETF3_ENH, 835 S390_FEAT_COMPARE_AND_SWAP_AND_STORE, 836 S390_FEAT_COMPARE_AND_SWAP_AND_STORE_2, 837 S390_FEAT_GENERAL_INSTRUCTIONS_EXT, 838 S390_FEAT_EXECUTE_EXT, 839 S390_FEAT_FLOATING_POINT_SUPPPORT_ENH, 840 S390_FEAT_STFLE_45, 841 S390_FEAT_STFLE_49, 842 S390_FEAT_LOCAL_TLB_CLEARING, 843 S390_FEAT_STFLE_53, 844 }; 845 int i; 846 847 for (i = 0; i < ARRAY_SIZE(feats); i++) { 848 set_bit(feats[i], fbm); 849 } 850 } 851 852 static S390CPUModel *get_max_cpu_model(Error **errp) 853 { 854 static S390CPUModel max_model; 855 static bool cached; 856 857 if (cached) { 858 return &max_model; 859 } 860 861 if (kvm_enabled()) { 862 kvm_s390_get_host_cpu_model(&max_model, errp); 863 } else { 864 /* TCG emulates a z900 (with some optional additional features) */ 865 max_model.def = &s390_cpu_defs[0]; 866 bitmap_copy(max_model.features, max_model.def->default_feat, 867 S390_FEAT_MAX); 868 add_qemu_cpu_model_features(max_model.features); 869 } 870 if (!*errp) { 871 cached = true; 872 return &max_model; 873 } 874 return NULL; 875 } 876 877 static inline void apply_cpu_model(const S390CPUModel *model, Error **errp) 878 { 879 #ifndef CONFIG_USER_ONLY 880 static S390CPUModel applied_model; 881 static bool applied; 882 883 /* 884 * We have the same model for all VCPUs. KVM can only be configured before 885 * any VCPUs are defined in KVM. 886 */ 887 if (applied) { 888 if (model && memcmp(&applied_model, model, sizeof(S390CPUModel))) { 889 error_setg(errp, "Mixed CPU models are not supported on s390x."); 890 } 891 return; 892 } 893 894 if (kvm_enabled()) { 895 kvm_s390_apply_cpu_model(model, errp); 896 } 897 898 if (!*errp) { 899 applied = true; 900 if (model) { 901 applied_model = *model; 902 } 903 } 904 #endif 905 } 906 907 void s390_realize_cpu_model(CPUState *cs, Error **errp) 908 { 909 S390CPUClass *xcc = S390_CPU_GET_CLASS(cs); 910 S390CPU *cpu = S390_CPU(cs); 911 const S390CPUModel *max_model; 912 913 if (xcc->kvm_required && !kvm_enabled()) { 914 error_setg(errp, "CPU definition requires KVM"); 915 return; 916 } 917 918 if (!cpu->model) { 919 /* no host model support -> perform compatibility stuff */ 920 apply_cpu_model(NULL, errp); 921 return; 922 } 923 924 max_model = get_max_cpu_model(errp); 925 if (*errp) { 926 error_prepend(errp, "CPU models are not available: "); 927 return; 928 } 929 930 /* copy over properties that can vary */ 931 cpu->model->lowest_ibc = max_model->lowest_ibc; 932 cpu->model->cpu_id = max_model->cpu_id; 933 cpu->model->cpu_id_format = max_model->cpu_id_format; 934 cpu->model->cpu_ver = max_model->cpu_ver; 935 936 check_consistency(cpu->model); 937 check_compatibility(max_model, cpu->model, errp); 938 if (*errp) { 939 return; 940 } 941 942 apply_cpu_model(cpu->model, errp); 943 944 cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model); 945 if (tcg_enabled()) { 946 /* basic mode, write the cpu address into the first 4 bit of the ID */ 947 cpu->env.cpuid = deposit64(cpu->env.cpuid, 54, 4, cpu->env.core_id); 948 } 949 } 950 951 static void get_feature(Object *obj, Visitor *v, const char *name, 952 void *opaque, Error **errp) 953 { 954 S390Feat feat = (S390Feat) opaque; 955 S390CPU *cpu = S390_CPU(obj); 956 bool value; 957 958 if (!cpu->model) { 959 error_setg(errp, "Details about the host CPU model are not available, " 960 "features cannot be queried."); 961 return; 962 } 963 964 value = test_bit(feat, cpu->model->features); 965 visit_type_bool(v, name, &value, errp); 966 } 967 968 static void set_feature(Object *obj, Visitor *v, const char *name, 969 void *opaque, Error **errp) 970 { 971 S390Feat feat = (S390Feat) opaque; 972 DeviceState *dev = DEVICE(obj); 973 S390CPU *cpu = S390_CPU(obj); 974 bool value; 975 976 if (dev->realized) { 977 error_setg(errp, "Attempt to set property '%s' on '%s' after " 978 "it was realized", name, object_get_typename(obj)); 979 return; 980 } else if (!cpu->model) { 981 error_setg(errp, "Details about the host CPU model are not available, " 982 "features cannot be changed."); 983 return; 984 } 985 986 visit_type_bool(v, name, &value, errp); 987 if (*errp) { 988 return; 989 } 990 if (value) { 991 if (!test_bit(feat, cpu->model->def->full_feat)) { 992 error_setg(errp, "Feature '%s' is not available for CPU model '%s'," 993 " it was introduced with later models.", 994 name, cpu->model->def->name); 995 return; 996 } 997 set_bit(feat, cpu->model->features); 998 } else { 999 clear_bit(feat, cpu->model->features); 1000 } 1001 } 1002 1003 static void get_feature_group(Object *obj, Visitor *v, const char *name, 1004 void *opaque, Error **errp) 1005 { 1006 S390FeatGroup group = (S390FeatGroup) opaque; 1007 const S390FeatGroupDef *def = s390_feat_group_def(group); 1008 S390CPU *cpu = S390_CPU(obj); 1009 S390FeatBitmap tmp; 1010 bool value; 1011 1012 if (!cpu->model) { 1013 error_setg(errp, "Details about the host CPU model are not available, " 1014 "features cannot be queried."); 1015 return; 1016 } 1017 1018 /* a group is enabled if all features are enabled */ 1019 bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX); 1020 value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX); 1021 visit_type_bool(v, name, &value, errp); 1022 } 1023 1024 static void set_feature_group(Object *obj, Visitor *v, const char *name, 1025 void *opaque, Error **errp) 1026 { 1027 S390FeatGroup group = (S390FeatGroup) opaque; 1028 const S390FeatGroupDef *def = s390_feat_group_def(group); 1029 DeviceState *dev = DEVICE(obj); 1030 S390CPU *cpu = S390_CPU(obj); 1031 bool value; 1032 1033 if (dev->realized) { 1034 error_setg(errp, "Attempt to set property '%s' on '%s' after " 1035 "it was realized", name, object_get_typename(obj)); 1036 return; 1037 } else if (!cpu->model) { 1038 error_setg(errp, "Details about the host CPU model are not available, " 1039 "features cannot be changed."); 1040 return; 1041 } 1042 1043 visit_type_bool(v, name, &value, errp); 1044 if (*errp) { 1045 return; 1046 } 1047 if (value) { 1048 /* groups are added in one shot, so an intersect is sufficient */ 1049 if (!bitmap_intersects(def->feat, cpu->model->def->full_feat, 1050 S390_FEAT_MAX)) { 1051 error_setg(errp, "Group '%s' is not available for CPU model '%s'," 1052 " it was introduced with later models.", 1053 name, cpu->model->def->name); 1054 return; 1055 } 1056 bitmap_or(cpu->model->features, cpu->model->features, def->feat, 1057 S390_FEAT_MAX); 1058 } else { 1059 bitmap_andnot(cpu->model->features, cpu->model->features, def->feat, 1060 S390_FEAT_MAX); 1061 } 1062 } 1063 1064 void s390_cpu_model_register_props(Object *obj) 1065 { 1066 S390FeatGroup group; 1067 S390Feat feat; 1068 1069 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 1070 const S390FeatDef *def = s390_feat_def(feat); 1071 object_property_add(obj, def->name, "bool", get_feature, 1072 set_feature, NULL, (void *) feat, NULL); 1073 object_property_set_description(obj, def->name, def->desc , NULL); 1074 } 1075 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 1076 const S390FeatGroupDef *def = s390_feat_group_def(group); 1077 object_property_add(obj, def->name, "bool", get_feature_group, 1078 set_feature_group, NULL, (void *) group, NULL); 1079 object_property_set_description(obj, def->name, def->desc , NULL); 1080 } 1081 } 1082 1083 static void s390_cpu_model_initfn(Object *obj) 1084 { 1085 S390CPU *cpu = S390_CPU(obj); 1086 S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu); 1087 1088 cpu->model = g_malloc0(sizeof(*cpu->model)); 1089 /* copy the model, so we can modify it */ 1090 cpu->model->def = xcc->cpu_def; 1091 if (xcc->is_static) { 1092 /* base model - features will never change */ 1093 bitmap_copy(cpu->model->features, cpu->model->def->base_feat, 1094 S390_FEAT_MAX); 1095 } else { 1096 /* latest model - features can change */ 1097 bitmap_copy(cpu->model->features, 1098 cpu->model->def->default_feat, S390_FEAT_MAX); 1099 } 1100 } 1101 1102 #ifdef CONFIG_KVM 1103 static void s390_host_cpu_model_initfn(Object *obj) 1104 { 1105 S390CPU *cpu = S390_CPU(obj); 1106 Error *err = NULL; 1107 1108 if (!kvm_enabled() || !kvm_s390_cpu_models_supported()) { 1109 return; 1110 } 1111 1112 cpu->model = g_malloc0(sizeof(*cpu->model)); 1113 kvm_s390_get_host_cpu_model(cpu->model, &err); 1114 if (err) { 1115 error_report_err(err); 1116 g_free(cpu->model); 1117 /* fallback to unsupported cpu models */ 1118 cpu->model = NULL; 1119 } 1120 } 1121 #endif 1122 1123 static void s390_qemu_cpu_model_initfn(Object *obj) 1124 { 1125 static S390CPUDef s390_qemu_cpu_defs; 1126 S390CPU *cpu = S390_CPU(obj); 1127 1128 cpu->model = g_malloc0(sizeof(*cpu->model)); 1129 /* TCG emulates a z900 (with some optional additional features) */ 1130 memcpy(&s390_qemu_cpu_defs, &s390_cpu_defs[0], sizeof(s390_qemu_cpu_defs)); 1131 add_qemu_cpu_model_features(s390_qemu_cpu_defs.full_feat); 1132 cpu->model->def = &s390_qemu_cpu_defs; 1133 bitmap_copy(cpu->model->features, cpu->model->def->default_feat, 1134 S390_FEAT_MAX); 1135 } 1136 1137 static void s390_cpu_model_finalize(Object *obj) 1138 { 1139 S390CPU *cpu = S390_CPU(obj); 1140 1141 g_free(cpu->model); 1142 cpu->model = NULL; 1143 } 1144 1145 static bool get_is_migration_safe(Object *obj, Error **errp) 1146 { 1147 return S390_CPU_GET_CLASS(obj)->is_migration_safe; 1148 } 1149 1150 static bool get_is_static(Object *obj, Error **errp) 1151 { 1152 return S390_CPU_GET_CLASS(obj)->is_static; 1153 } 1154 1155 static char *get_description(Object *obj, Error **errp) 1156 { 1157 return g_strdup(S390_CPU_GET_CLASS(obj)->desc); 1158 } 1159 1160 void s390_cpu_model_class_register_props(ObjectClass *oc) 1161 { 1162 object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe, 1163 NULL, NULL); 1164 object_class_property_add_bool(oc, "static", get_is_static, 1165 NULL, NULL); 1166 object_class_property_add_str(oc, "description", get_description, NULL, 1167 NULL); 1168 } 1169 1170 #ifdef CONFIG_KVM 1171 static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data) 1172 { 1173 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1174 1175 xcc->kvm_required = true; 1176 xcc->desc = "KVM only: All recognized features"; 1177 } 1178 #endif 1179 1180 static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data) 1181 { 1182 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1183 1184 /* all base models are migration safe */ 1185 xcc->cpu_def = (const S390CPUDef *) data; 1186 xcc->is_migration_safe = true; 1187 xcc->is_static = true; 1188 xcc->desc = xcc->cpu_def->desc; 1189 } 1190 1191 static void s390_cpu_model_class_init(ObjectClass *oc, void *data) 1192 { 1193 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1194 1195 /* model that can change between QEMU versions */ 1196 xcc->cpu_def = (const S390CPUDef *) data; 1197 xcc->is_migration_safe = true; 1198 xcc->desc = xcc->cpu_def->desc; 1199 } 1200 1201 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data) 1202 { 1203 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1204 1205 xcc->is_migration_safe = true; 1206 xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s", 1207 qemu_hw_version()); 1208 } 1209 1210 #define S390_CPU_TYPE_SUFFIX "-" TYPE_S390_CPU 1211 #define S390_CPU_TYPE_NAME(name) (name S390_CPU_TYPE_SUFFIX) 1212 1213 /* Generate type name for a cpu model. Caller has to free the string. */ 1214 static char *s390_cpu_type_name(const char *model_name) 1215 { 1216 return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name); 1217 } 1218 1219 /* Generate type name for a base cpu model. Caller has to free the string. */ 1220 static char *s390_base_cpu_type_name(const char *model_name) 1221 { 1222 return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name); 1223 } 1224 1225 ObjectClass *s390_cpu_class_by_name(const char *name) 1226 { 1227 char *typename = s390_cpu_type_name(name); 1228 ObjectClass *oc; 1229 1230 oc = object_class_by_name(typename); 1231 g_free(typename); 1232 return oc; 1233 } 1234 1235 const char *s390_default_cpu_model_name(void) 1236 { 1237 if (kvm_enabled()) { 1238 return "host"; 1239 } 1240 return "qemu"; 1241 } 1242 1243 static const TypeInfo qemu_s390_cpu_type_info = { 1244 .name = S390_CPU_TYPE_NAME("qemu"), 1245 .parent = TYPE_S390_CPU, 1246 .instance_init = s390_qemu_cpu_model_initfn, 1247 .instance_finalize = s390_cpu_model_finalize, 1248 .class_init = s390_qemu_cpu_model_class_init, 1249 }; 1250 1251 #ifdef CONFIG_KVM 1252 static const TypeInfo host_s390_cpu_type_info = { 1253 .name = S390_CPU_TYPE_NAME("host"), 1254 .parent = TYPE_S390_CPU, 1255 .instance_init = s390_host_cpu_model_initfn, 1256 .instance_finalize = s390_cpu_model_finalize, 1257 .class_init = s390_host_cpu_model_class_init, 1258 }; 1259 #endif 1260 1261 static void init_ignored_base_feat(void) 1262 { 1263 static const int feats[] = { 1264 /* MSA subfunctions that could not be available on certain machines */ 1265 S390_FEAT_KMAC_DEA, 1266 S390_FEAT_KMAC_TDEA_128, 1267 S390_FEAT_KMAC_TDEA_192, 1268 S390_FEAT_KMC_DEA, 1269 S390_FEAT_KMC_TDEA_128, 1270 S390_FEAT_KMC_TDEA_192, 1271 S390_FEAT_KM_DEA, 1272 S390_FEAT_KM_TDEA_128, 1273 S390_FEAT_KM_TDEA_192, 1274 S390_FEAT_KIMD_SHA_1, 1275 S390_FEAT_KLMD_SHA_1, 1276 }; 1277 int i; 1278 1279 for (i = 0; i < ARRAY_SIZE(feats); i++) { 1280 set_bit(feats[i], ignored_base_feat); 1281 } 1282 } 1283 1284 static void register_types(void) 1285 { 1286 int i; 1287 1288 init_ignored_base_feat(); 1289 1290 /* init all bitmaps from gnerated data initially */ 1291 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 1292 s390_init_feat_bitmap(s390_cpu_defs[i].base_init, 1293 s390_cpu_defs[i].base_feat); 1294 s390_init_feat_bitmap(s390_cpu_defs[i].default_init, 1295 s390_cpu_defs[i].default_feat); 1296 s390_init_feat_bitmap(s390_cpu_defs[i].full_init, 1297 s390_cpu_defs[i].full_feat); 1298 } 1299 1300 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 1301 char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name); 1302 TypeInfo ti_base = { 1303 .name = base_name, 1304 .parent = TYPE_S390_CPU, 1305 .instance_init = s390_cpu_model_initfn, 1306 .instance_finalize = s390_cpu_model_finalize, 1307 .class_init = s390_base_cpu_model_class_init, 1308 .class_data = (void *) &s390_cpu_defs[i], 1309 }; 1310 char *name = s390_cpu_type_name(s390_cpu_defs[i].name); 1311 TypeInfo ti = { 1312 .name = name, 1313 .parent = TYPE_S390_CPU, 1314 .instance_init = s390_cpu_model_initfn, 1315 .instance_finalize = s390_cpu_model_finalize, 1316 .class_init = s390_cpu_model_class_init, 1317 .class_data = (void *) &s390_cpu_defs[i], 1318 }; 1319 1320 type_register_static(&ti_base); 1321 type_register_static(&ti); 1322 g_free(base_name); 1323 g_free(name); 1324 } 1325 1326 type_register_static(&qemu_s390_cpu_type_info); 1327 #ifdef CONFIG_KVM 1328 type_register_static(&host_s390_cpu_type_info); 1329 #endif 1330 } 1331 1332 type_init(register_types) 1333