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 "sysemu/tcg.h" 19 #include "qapi/error.h" 20 #include "qapi/visitor.h" 21 #include "qemu/error-report.h" 22 #include "qemu/qemu-print.h" 23 #include "qapi/qmp/qerror.h" 24 #include "qapi/qobject-input-visitor.h" 25 #include "qapi/qmp/qdict.h" 26 #ifndef CONFIG_USER_ONLY 27 #include "sysemu/arch_init.h" 28 #include "hw/pci/pci.h" 29 #endif 30 #include "qapi/qapi-commands-target.h" 31 32 #define CPUDEF_INIT(_type, _gen, _ec_ga, _mha_pow, _hmfai, _name, _desc) \ 33 { \ 34 .name = _name, \ 35 .type = _type, \ 36 .gen = _gen, \ 37 .ec_ga = _ec_ga, \ 38 .mha_pow = _mha_pow, \ 39 .hmfai = _hmfai, \ 40 .desc = _desc, \ 41 .base_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _BASE }, \ 42 .default_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _DEFAULT }, \ 43 .full_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _FULL }, \ 44 } 45 46 /* 47 * CPU definition list in order of release. Up to generation 14 base features 48 * of a following release have been a superset of the previous release. With 49 * generation 15 one base feature and one optional feature have been deprecated. 50 */ 51 static S390CPUDef s390_cpu_defs[] = { 52 CPUDEF_INIT(0x2064, 7, 1, 38, 0x00000000U, "z900", "IBM zSeries 900 GA1"), 53 CPUDEF_INIT(0x2064, 7, 2, 38, 0x00000000U, "z900.2", "IBM zSeries 900 GA2"), 54 CPUDEF_INIT(0x2064, 7, 3, 38, 0x00000000U, "z900.3", "IBM zSeries 900 GA3"), 55 CPUDEF_INIT(0x2066, 7, 3, 38, 0x00000000U, "z800", "IBM zSeries 800 GA1"), 56 CPUDEF_INIT(0x2084, 8, 1, 38, 0x00000000U, "z990", "IBM zSeries 990 GA1"), 57 CPUDEF_INIT(0x2084, 8, 2, 38, 0x00000000U, "z990.2", "IBM zSeries 990 GA2"), 58 CPUDEF_INIT(0x2084, 8, 3, 38, 0x00000000U, "z990.3", "IBM zSeries 990 GA3"), 59 CPUDEF_INIT(0x2086, 8, 3, 38, 0x00000000U, "z890", "IBM zSeries 880 GA1"), 60 CPUDEF_INIT(0x2084, 8, 4, 38, 0x00000000U, "z990.4", "IBM zSeries 990 GA4"), 61 CPUDEF_INIT(0x2086, 8, 4, 38, 0x00000000U, "z890.2", "IBM zSeries 880 GA2"), 62 CPUDEF_INIT(0x2084, 8, 5, 38, 0x00000000U, "z990.5", "IBM zSeries 990 GA5"), 63 CPUDEF_INIT(0x2086, 8, 5, 38, 0x00000000U, "z890.3", "IBM zSeries 880 GA3"), 64 CPUDEF_INIT(0x2094, 9, 1, 40, 0x00000000U, "z9EC", "IBM System z9 EC GA1"), 65 CPUDEF_INIT(0x2094, 9, 2, 40, 0x00000000U, "z9EC.2", "IBM System z9 EC GA2"), 66 CPUDEF_INIT(0x2096, 9, 2, 40, 0x00000000U, "z9BC", "IBM System z9 BC GA1"), 67 CPUDEF_INIT(0x2094, 9, 3, 40, 0x00000000U, "z9EC.3", "IBM System z9 EC GA3"), 68 CPUDEF_INIT(0x2096, 9, 3, 40, 0x00000000U, "z9BC.2", "IBM System z9 BC GA2"), 69 CPUDEF_INIT(0x2097, 10, 1, 43, 0x00000000U, "z10EC", "IBM System z10 EC GA1"), 70 CPUDEF_INIT(0x2097, 10, 2, 43, 0x00000000U, "z10EC.2", "IBM System z10 EC GA2"), 71 CPUDEF_INIT(0x2098, 10, 2, 43, 0x00000000U, "z10BC", "IBM System z10 BC GA1"), 72 CPUDEF_INIT(0x2097, 10, 3, 43, 0x00000000U, "z10EC.3", "IBM System z10 EC GA3"), 73 CPUDEF_INIT(0x2098, 10, 3, 43, 0x00000000U, "z10BC.2", "IBM System z10 BC GA2"), 74 CPUDEF_INIT(0x2817, 11, 1, 44, 0x08000000U, "z196", "IBM zEnterprise 196 GA1"), 75 CPUDEF_INIT(0x2817, 11, 2, 44, 0x08000000U, "z196.2", "IBM zEnterprise 196 GA2"), 76 CPUDEF_INIT(0x2818, 11, 2, 44, 0x08000000U, "z114", "IBM zEnterprise 114 GA1"), 77 CPUDEF_INIT(0x2827, 12, 1, 44, 0x08000000U, "zEC12", "IBM zEnterprise EC12 GA1"), 78 CPUDEF_INIT(0x2827, 12, 2, 44, 0x08000000U, "zEC12.2", "IBM zEnterprise EC12 GA2"), 79 CPUDEF_INIT(0x2828, 12, 2, 44, 0x08000000U, "zBC12", "IBM zEnterprise BC12 GA1"), 80 CPUDEF_INIT(0x2964, 13, 1, 47, 0x08000000U, "z13", "IBM z13 GA1"), 81 CPUDEF_INIT(0x2964, 13, 2, 47, 0x08000000U, "z13.2", "IBM z13 GA2"), 82 CPUDEF_INIT(0x2965, 13, 2, 47, 0x08000000U, "z13s", "IBM z13s GA1"), 83 CPUDEF_INIT(0x3906, 14, 1, 47, 0x08000000U, "z14", "IBM z14 GA1"), 84 CPUDEF_INIT(0x3906, 14, 2, 47, 0x08000000U, "z14.2", "IBM z14 GA2"), 85 CPUDEF_INIT(0x3907, 14, 1, 47, 0x08000000U, "z14ZR1", "IBM z14 Model ZR1 GA1"), 86 CPUDEF_INIT(0x8561, 15, 1, 47, 0x08000000U, "gen15a", "IBM 8561 GA1"), 87 CPUDEF_INIT(0x8562, 15, 1, 47, 0x08000000U, "gen15b", "IBM 8562 GA1"), 88 }; 89 90 #define QEMU_MAX_CPU_TYPE 0x2964 91 #define QEMU_MAX_CPU_GEN 13 92 #define QEMU_MAX_CPU_EC_GA 2 93 static const S390FeatInit qemu_max_cpu_feat_init = { S390_FEAT_LIST_QEMU_MAX }; 94 static S390FeatBitmap qemu_max_cpu_feat; 95 96 /* features part of a base model but not relevant for finding a base model */ 97 S390FeatBitmap ignored_base_feat; 98 99 void s390_cpudef_featoff(uint8_t gen, uint8_t ec_ga, S390Feat feat) 100 { 101 const S390CPUDef *def; 102 103 def = s390_find_cpu_def(0, gen, ec_ga, NULL); 104 clear_bit(feat, (unsigned long *)&def->default_feat); 105 } 106 107 void s390_cpudef_featoff_greater(uint8_t gen, uint8_t ec_ga, S390Feat feat) 108 { 109 int i; 110 111 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 112 const S390CPUDef *def = &s390_cpu_defs[i]; 113 114 if (def->gen < gen) { 115 continue; 116 } 117 if (def->gen == gen && def->ec_ga < ec_ga) { 118 continue; 119 } 120 121 clear_bit(feat, (unsigned long *)&def->default_feat); 122 } 123 } 124 125 void s390_cpudef_group_featoff_greater(uint8_t gen, uint8_t ec_ga, 126 S390FeatGroup group) 127 { 128 const S390FeatGroupDef *group_def = s390_feat_group_def(group); 129 S390FeatBitmap group_def_off; 130 int i; 131 132 bitmap_complement(group_def_off, group_def->feat, S390_FEAT_MAX); 133 134 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 135 const S390CPUDef *cpu_def = &s390_cpu_defs[i]; 136 137 if (cpu_def->gen < gen) { 138 continue; 139 } 140 if (cpu_def->gen == gen && cpu_def->ec_ga < ec_ga) { 141 continue; 142 } 143 144 bitmap_and((unsigned long *)&cpu_def->default_feat, 145 cpu_def->default_feat, group_def_off, S390_FEAT_MAX); 146 } 147 } 148 149 uint32_t s390_get_hmfai(void) 150 { 151 static S390CPU *cpu; 152 153 if (!cpu) { 154 cpu = S390_CPU(qemu_get_cpu(0)); 155 } 156 157 if (!cpu || !cpu->model) { 158 return 0; 159 } 160 return cpu->model->def->hmfai; 161 } 162 163 uint8_t s390_get_mha_pow(void) 164 { 165 static S390CPU *cpu; 166 167 if (!cpu) { 168 cpu = S390_CPU(qemu_get_cpu(0)); 169 } 170 171 if (!cpu || !cpu->model) { 172 return 0; 173 } 174 return cpu->model->def->mha_pow; 175 } 176 177 uint32_t s390_get_ibc_val(void) 178 { 179 uint16_t unblocked_ibc, lowest_ibc; 180 static S390CPU *cpu; 181 182 if (!cpu) { 183 cpu = S390_CPU(qemu_get_cpu(0)); 184 } 185 186 if (!cpu || !cpu->model) { 187 return 0; 188 } 189 unblocked_ibc = s390_ibc_from_cpu_model(cpu->model); 190 lowest_ibc = cpu->model->lowest_ibc; 191 /* the lowest_ibc always has to be <= unblocked_ibc */ 192 if (!lowest_ibc || lowest_ibc > unblocked_ibc) { 193 return 0; 194 } 195 return ((uint32_t) lowest_ibc << 16) | unblocked_ibc; 196 } 197 198 void s390_get_feat_block(S390FeatType type, uint8_t *data) 199 { 200 static S390CPU *cpu; 201 202 if (!cpu) { 203 cpu = S390_CPU(qemu_get_cpu(0)); 204 } 205 206 if (!cpu || !cpu->model) { 207 return; 208 } 209 s390_fill_feat_block(cpu->model->features, type, data); 210 } 211 212 bool s390_has_feat(S390Feat feat) 213 { 214 static S390CPU *cpu; 215 216 if (!cpu) { 217 cpu = S390_CPU(qemu_get_cpu(0)); 218 } 219 220 if (!cpu || !cpu->model) { 221 #ifdef CONFIG_KVM 222 if (kvm_enabled()) { 223 if (feat == S390_FEAT_VECTOR) { 224 return kvm_check_extension(kvm_state, 225 KVM_CAP_S390_VECTOR_REGISTERS); 226 } 227 if (feat == S390_FEAT_RUNTIME_INSTRUMENTATION) { 228 return kvm_s390_get_ri(); 229 } 230 if (feat == S390_FEAT_MSA_EXT_3) { 231 return true; 232 } 233 } 234 #endif 235 if (feat == S390_FEAT_ZPCI) { 236 return true; 237 } 238 return 0; 239 } 240 return test_bit(feat, cpu->model->features); 241 } 242 243 uint8_t s390_get_gen_for_cpu_type(uint16_t type) 244 { 245 int i; 246 247 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 248 if (s390_cpu_defs[i].type == type) { 249 return s390_cpu_defs[i].gen; 250 } 251 } 252 return 0; 253 } 254 255 const S390CPUDef *s390_find_cpu_def(uint16_t type, uint8_t gen, uint8_t ec_ga, 256 S390FeatBitmap features) 257 { 258 const S390CPUDef *last_compatible = NULL; 259 const S390CPUDef *matching_cpu_type = NULL; 260 int i; 261 262 if (!gen) { 263 ec_ga = 0; 264 } 265 if (!gen && type) { 266 gen = s390_get_gen_for_cpu_type(type); 267 } 268 269 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 270 const S390CPUDef *def = &s390_cpu_defs[i]; 271 S390FeatBitmap missing; 272 273 /* don't even try newer generations if we know the generation */ 274 if (gen) { 275 if (def->gen > gen) { 276 break; 277 } else if (def->gen == gen && ec_ga && def->ec_ga > ec_ga) { 278 break; 279 } 280 } 281 282 if (features) { 283 /* see if the model satisfies the minimum features */ 284 bitmap_andnot(missing, def->base_feat, features, S390_FEAT_MAX); 285 /* 286 * Ignore certain features that are in the base model, but not 287 * relevant for the search (esp. MSA subfunctions). 288 */ 289 bitmap_andnot(missing, missing, ignored_base_feat, S390_FEAT_MAX); 290 if (!bitmap_empty(missing, S390_FEAT_MAX)) { 291 break; 292 } 293 } 294 295 /* stop the search if we found the exact model */ 296 if (def->type == type && def->ec_ga == ec_ga) { 297 return def; 298 } 299 /* remember if we've at least seen one with the same cpu type */ 300 if (def->type == type) { 301 matching_cpu_type = def; 302 } 303 last_compatible = def; 304 } 305 /* prefer the model with the same cpu type, esp. don't take the BC for EC */ 306 if (matching_cpu_type) { 307 return matching_cpu_type; 308 } 309 return last_compatible; 310 } 311 312 static void s390_print_cpu_model_list_entry(gpointer data, gpointer user_data) 313 { 314 const S390CPUClass *scc = S390_CPU_CLASS((ObjectClass *)data); 315 char *name = g_strdup(object_class_get_name((ObjectClass *)data)); 316 const char *details = ""; 317 318 if (scc->is_static) { 319 details = "(static, migration-safe)"; 320 } else if (scc->is_migration_safe) { 321 details = "(migration-safe)"; 322 } 323 324 /* strip off the -s390x-cpu */ 325 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; 326 qemu_printf("s390 %-15s %-35s %s\n", name, scc->desc, details); 327 g_free(name); 328 } 329 330 static gint s390_cpu_list_compare(gconstpointer a, gconstpointer b) 331 { 332 const S390CPUClass *cc_a = S390_CPU_CLASS((ObjectClass *)a); 333 const S390CPUClass *cc_b = S390_CPU_CLASS((ObjectClass *)b); 334 const char *name_a = object_class_get_name((ObjectClass *)a); 335 const char *name_b = object_class_get_name((ObjectClass *)b); 336 337 /* 338 * Move qemu, host and max to the top of the list, qemu first, host second, 339 * max third. 340 */ 341 if (name_a[0] == 'q') { 342 return -1; 343 } else if (name_b[0] == 'q') { 344 return 1; 345 } else if (name_a[0] == 'h') { 346 return -1; 347 } else if (name_b[0] == 'h') { 348 return 1; 349 } else if (name_a[0] == 'm') { 350 return -1; 351 } else if (name_b[0] == 'm') { 352 return 1; 353 } 354 355 /* keep the same order we have in our table (sorted by release date) */ 356 if (cc_a->cpu_def != cc_b->cpu_def) { 357 return cc_a->cpu_def - cc_b->cpu_def; 358 } 359 360 /* exact same definition - list base model first */ 361 return cc_a->is_static ? -1 : 1; 362 } 363 364 void s390_cpu_list(void) 365 { 366 S390FeatGroup group; 367 S390Feat feat; 368 GSList *list; 369 370 list = object_class_get_list(TYPE_S390_CPU, false); 371 list = g_slist_sort(list, s390_cpu_list_compare); 372 g_slist_foreach(list, s390_print_cpu_model_list_entry, NULL); 373 g_slist_free(list); 374 375 qemu_printf("\nRecognized feature flags:\n"); 376 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 377 const S390FeatDef *def = s390_feat_def(feat); 378 379 qemu_printf("%-20s %-50s\n", def->name, def->desc); 380 } 381 382 qemu_printf("\nRecognized feature groups:\n"); 383 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 384 const S390FeatGroupDef *def = s390_feat_group_def(group); 385 386 qemu_printf("%-20s %-50s\n", def->name, def->desc); 387 } 388 } 389 390 static S390CPUModel *get_max_cpu_model(Error **errp); 391 392 #ifndef CONFIG_USER_ONLY 393 static void list_add_feat(const char *name, void *opaque); 394 395 static void check_unavailable_features(const S390CPUModel *max_model, 396 const S390CPUModel *model, 397 strList **unavailable) 398 { 399 S390FeatBitmap missing; 400 401 /* check general model compatibility */ 402 if (max_model->def->gen < model->def->gen || 403 (max_model->def->gen == model->def->gen && 404 max_model->def->ec_ga < model->def->ec_ga)) { 405 list_add_feat("type", unavailable); 406 } 407 408 /* detect missing features if any to properly report them */ 409 bitmap_andnot(missing, model->features, max_model->features, 410 S390_FEAT_MAX); 411 if (!bitmap_empty(missing, S390_FEAT_MAX)) { 412 s390_feat_bitmap_to_ascii(missing, unavailable, list_add_feat); 413 } 414 } 415 416 struct CpuDefinitionInfoListData { 417 CpuDefinitionInfoList *list; 418 S390CPUModel *model; 419 }; 420 421 static void create_cpu_model_list(ObjectClass *klass, void *opaque) 422 { 423 struct CpuDefinitionInfoListData *cpu_list_data = opaque; 424 CpuDefinitionInfoList **cpu_list = &cpu_list_data->list; 425 CpuDefinitionInfoList *entry; 426 CpuDefinitionInfo *info; 427 char *name = g_strdup(object_class_get_name(klass)); 428 S390CPUClass *scc = S390_CPU_CLASS(klass); 429 430 /* strip off the -s390x-cpu */ 431 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; 432 info = g_new0(CpuDefinitionInfo, 1); 433 info->name = name; 434 info->has_migration_safe = true; 435 info->migration_safe = scc->is_migration_safe; 436 info->q_static = scc->is_static; 437 info->q_typename = g_strdup(object_class_get_name(klass)); 438 /* check for unavailable features */ 439 if (cpu_list_data->model) { 440 Object *obj; 441 S390CPU *sc; 442 obj = object_new(object_class_get_name(klass)); 443 sc = S390_CPU(obj); 444 if (sc->model) { 445 info->has_unavailable_features = true; 446 check_unavailable_features(cpu_list_data->model, sc->model, 447 &info->unavailable_features); 448 } 449 object_unref(obj); 450 } 451 452 entry = g_new0(CpuDefinitionInfoList, 1); 453 entry->value = info; 454 entry->next = *cpu_list; 455 *cpu_list = entry; 456 } 457 458 CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp) 459 { 460 struct CpuDefinitionInfoListData list_data = { 461 .list = NULL, 462 }; 463 464 list_data.model = get_max_cpu_model(errp); 465 if (*errp) { 466 error_free(*errp); 467 *errp = NULL; 468 } 469 470 object_class_foreach(create_cpu_model_list, TYPE_S390_CPU, false, 471 &list_data); 472 473 return list_data.list; 474 } 475 476 static void cpu_model_from_info(S390CPUModel *model, const CpuModelInfo *info, 477 Error **errp) 478 { 479 const QDict *qdict = NULL; 480 const QDictEntry *e; 481 Visitor *visitor; 482 ObjectClass *oc; 483 S390CPU *cpu; 484 Object *obj; 485 486 if (info->props) { 487 qdict = qobject_to(QDict, info->props); 488 if (!qdict) { 489 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict"); 490 return; 491 } 492 } 493 494 oc = cpu_class_by_name(TYPE_S390_CPU, info->name); 495 if (!oc) { 496 error_setg(errp, "The CPU definition \'%s\' is unknown.", info->name); 497 return; 498 } 499 if (S390_CPU_CLASS(oc)->kvm_required && !kvm_enabled()) { 500 error_setg(errp, "The CPU definition '%s' requires KVM", info->name); 501 return; 502 } 503 obj = object_new(object_class_get_name(oc)); 504 cpu = S390_CPU(obj); 505 506 if (!cpu->model) { 507 error_setg(errp, "Details about the host CPU model are not available, " 508 "it cannot be used."); 509 object_unref(obj); 510 return; 511 } 512 513 if (qdict) { 514 visitor = qobject_input_visitor_new(info->props); 515 visit_start_struct(visitor, NULL, NULL, 0, errp); 516 if (*errp) { 517 object_unref(obj); 518 return; 519 } 520 for (e = qdict_first(qdict); e; e = qdict_next(qdict, e)) { 521 object_property_set(obj, visitor, e->key, errp); 522 if (*errp) { 523 break; 524 } 525 } 526 if (!*errp) { 527 visit_check_struct(visitor, errp); 528 } 529 visit_end_struct(visitor, NULL); 530 visit_free(visitor); 531 if (*errp) { 532 object_unref(obj); 533 return; 534 } 535 } 536 537 /* copy the model and throw the cpu away */ 538 memcpy(model, cpu->model, sizeof(*model)); 539 object_unref(obj); 540 } 541 542 static void qdict_add_disabled_feat(const char *name, void *opaque) 543 { 544 qdict_put_bool(opaque, name, false); 545 } 546 547 static void qdict_add_enabled_feat(const char *name, void *opaque) 548 { 549 qdict_put_bool(opaque, name, true); 550 } 551 552 /* convert S390CPUDef into a static CpuModelInfo */ 553 static void cpu_info_from_model(CpuModelInfo *info, const S390CPUModel *model, 554 bool delta_changes) 555 { 556 QDict *qdict = qdict_new(); 557 S390FeatBitmap bitmap; 558 559 /* always fallback to the static base model */ 560 info->name = g_strdup_printf("%s-base", model->def->name); 561 562 if (delta_changes) { 563 /* features deleted from the base feature set */ 564 bitmap_andnot(bitmap, model->def->base_feat, model->features, 565 S390_FEAT_MAX); 566 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) { 567 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat); 568 } 569 570 /* features added to the base feature set */ 571 bitmap_andnot(bitmap, model->features, model->def->base_feat, 572 S390_FEAT_MAX); 573 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) { 574 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_enabled_feat); 575 } 576 } else { 577 /* expand all features */ 578 s390_feat_bitmap_to_ascii(model->features, qdict, 579 qdict_add_enabled_feat); 580 bitmap_complement(bitmap, model->features, S390_FEAT_MAX); 581 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat); 582 } 583 584 if (!qdict_size(qdict)) { 585 qobject_unref(qdict); 586 } else { 587 info->props = QOBJECT(qdict); 588 info->has_props = true; 589 } 590 } 591 592 CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type, 593 CpuModelInfo *model, 594 Error **errp) 595 { 596 CpuModelExpansionInfo *expansion_info = NULL; 597 S390CPUModel s390_model; 598 bool delta_changes = false; 599 600 /* convert it to our internal representation */ 601 cpu_model_from_info(&s390_model, model, errp); 602 if (*errp) { 603 return NULL; 604 } 605 606 if (type == CPU_MODEL_EXPANSION_TYPE_STATIC) { 607 delta_changes = true; 608 } else if (type != CPU_MODEL_EXPANSION_TYPE_FULL) { 609 error_setg(errp, "The requested expansion type is not supported."); 610 return NULL; 611 } 612 613 /* convert it back to a static representation */ 614 expansion_info = g_new0(CpuModelExpansionInfo, 1); 615 expansion_info->model = g_malloc0(sizeof(*expansion_info->model)); 616 cpu_info_from_model(expansion_info->model, &s390_model, delta_changes); 617 return expansion_info; 618 } 619 620 static void list_add_feat(const char *name, void *opaque) 621 { 622 strList **last = (strList **) opaque; 623 strList *entry; 624 625 entry = g_new0(strList, 1); 626 entry->value = g_strdup(name); 627 entry->next = *last; 628 *last = entry; 629 } 630 631 CpuModelCompareInfo *qmp_query_cpu_model_comparison(CpuModelInfo *infoa, 632 CpuModelInfo *infob, 633 Error **errp) 634 { 635 CpuModelCompareResult feat_result, gen_result; 636 CpuModelCompareInfo *compare_info; 637 S390FeatBitmap missing, added; 638 S390CPUModel modela, modelb; 639 640 /* convert both models to our internal representation */ 641 cpu_model_from_info(&modela, infoa, errp); 642 if (*errp) { 643 return NULL; 644 } 645 cpu_model_from_info(&modelb, infob, errp); 646 if (*errp) { 647 return NULL; 648 } 649 compare_info = g_new0(CpuModelCompareInfo, 1); 650 651 /* check the cpu generation and ga level */ 652 if (modela.def->gen == modelb.def->gen) { 653 if (modela.def->ec_ga == modelb.def->ec_ga) { 654 /* ec and corresponding bc are identical */ 655 gen_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; 656 } else if (modela.def->ec_ga < modelb.def->ec_ga) { 657 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 658 } else { 659 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 660 } 661 } else if (modela.def->gen < modelb.def->gen) { 662 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 663 } else { 664 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 665 } 666 if (gen_result != CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 667 /* both models cannot be made identical */ 668 list_add_feat("type", &compare_info->responsible_properties); 669 } 670 671 /* check the feature set */ 672 if (bitmap_equal(modela.features, modelb.features, S390_FEAT_MAX)) { 673 feat_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; 674 } else { 675 bitmap_andnot(missing, modela.features, modelb.features, S390_FEAT_MAX); 676 s390_feat_bitmap_to_ascii(missing, 677 &compare_info->responsible_properties, 678 list_add_feat); 679 bitmap_andnot(added, modelb.features, modela.features, S390_FEAT_MAX); 680 s390_feat_bitmap_to_ascii(added, &compare_info->responsible_properties, 681 list_add_feat); 682 if (bitmap_empty(missing, S390_FEAT_MAX)) { 683 feat_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 684 } else if (bitmap_empty(added, S390_FEAT_MAX)) { 685 feat_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 686 } else { 687 feat_result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; 688 } 689 } 690 691 /* combine the results */ 692 if (gen_result == feat_result) { 693 compare_info->result = gen_result; 694 } else if (feat_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 695 compare_info->result = gen_result; 696 } else if (gen_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 697 compare_info->result = feat_result; 698 } else { 699 compare_info->result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; 700 } 701 return compare_info; 702 } 703 704 CpuModelBaselineInfo *qmp_query_cpu_model_baseline(CpuModelInfo *infoa, 705 CpuModelInfo *infob, 706 Error **errp) 707 { 708 CpuModelBaselineInfo *baseline_info; 709 S390CPUModel modela, modelb, model; 710 uint16_t cpu_type; 711 uint8_t max_gen_ga; 712 uint8_t max_gen; 713 714 /* convert both models to our internal representation */ 715 cpu_model_from_info(&modela, infoa, errp); 716 if (*errp) { 717 return NULL; 718 } 719 720 cpu_model_from_info(&modelb, infob, errp); 721 if (*errp) { 722 return NULL; 723 } 724 725 /* features both models support */ 726 bitmap_and(model.features, modela.features, modelb.features, S390_FEAT_MAX); 727 728 /* detect the maximum model not regarding features */ 729 if (modela.def->gen == modelb.def->gen) { 730 if (modela.def->type == modelb.def->type) { 731 cpu_type = modela.def->type; 732 } else { 733 cpu_type = 0; 734 } 735 max_gen = modela.def->gen; 736 max_gen_ga = MIN(modela.def->ec_ga, modelb.def->ec_ga); 737 } else if (modela.def->gen > modelb.def->gen) { 738 cpu_type = modelb.def->type; 739 max_gen = modelb.def->gen; 740 max_gen_ga = modelb.def->ec_ga; 741 } else { 742 cpu_type = modela.def->type; 743 max_gen = modela.def->gen; 744 max_gen_ga = modela.def->ec_ga; 745 } 746 747 model.def = s390_find_cpu_def(cpu_type, max_gen, max_gen_ga, 748 model.features); 749 750 /* models without early base features (esan3) are bad */ 751 if (!model.def) { 752 error_setg(errp, "No compatible CPU model could be created as" 753 " important base features are disabled"); 754 return NULL; 755 } 756 757 /* strip off features not part of the max model */ 758 bitmap_and(model.features, model.features, model.def->full_feat, 759 S390_FEAT_MAX); 760 761 baseline_info = g_new0(CpuModelBaselineInfo, 1); 762 baseline_info->model = g_malloc0(sizeof(*baseline_info->model)); 763 cpu_info_from_model(baseline_info->model, &model, true); 764 return baseline_info; 765 } 766 #endif 767 768 static void check_consistency(const S390CPUModel *model) 769 { 770 static int dep[][2] = { 771 { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH }, 772 { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH }, 773 { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH }, 774 { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT }, 775 { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH}, 776 { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT }, 777 { S390_FEAT_DFP_FAST, S390_FEAT_DFP }, 778 { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 }, 779 { S390_FEAT_EDAT_2, S390_FEAT_EDAT}, 780 { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 }, 781 { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 }, 782 { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 }, 783 { S390_FEAT_SIE_CMMA, S390_FEAT_CMM }, 784 { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS }, 785 { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT }, 786 { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 }, 787 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_3 }, 788 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_4 }, 789 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 790 { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR }, 791 { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR }, 792 { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 793 { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP }, 794 { S390_FEAT_CMM_NT, S390_FEAT_CMM }, 795 { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 796 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST }, 797 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 798 { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 }, 799 { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA }, 800 { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA }, 801 { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA }, 802 { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA }, 803 { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA }, 804 { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA }, 805 { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA }, 806 { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA }, 807 { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA }, 808 { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA }, 809 { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA }, 810 { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA }, 811 { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 }, 812 { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 }, 813 { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 }, 814 { S390_FEAT_AP_QUERY_CONFIG_INFO, S390_FEAT_AP }, 815 { S390_FEAT_AP_FACILITIES_TEST, S390_FEAT_AP }, 816 { S390_FEAT_PTFF_QSIE, S390_FEAT_MULTIPLE_EPOCH }, 817 { S390_FEAT_PTFF_QTOUE, S390_FEAT_MULTIPLE_EPOCH }, 818 { S390_FEAT_PTFF_STOE, S390_FEAT_MULTIPLE_EPOCH }, 819 { S390_FEAT_PTFF_STOUE, S390_FEAT_MULTIPLE_EPOCH }, 820 }; 821 int i; 822 823 for (i = 0; i < ARRAY_SIZE(dep); i++) { 824 if (test_bit(dep[i][0], model->features) && 825 !test_bit(dep[i][1], model->features)) { 826 warn_report("\'%s\' requires \'%s\'.", 827 s390_feat_def(dep[i][0])->name, 828 s390_feat_def(dep[i][1])->name); 829 } 830 } 831 } 832 833 static void error_prepend_missing_feat(const char *name, void *opaque) 834 { 835 error_prepend((Error **) opaque, "%s ", name); 836 } 837 838 static void check_compatibility(const S390CPUModel *max_model, 839 const S390CPUModel *model, Error **errp) 840 { 841 S390FeatBitmap missing; 842 843 if (model->def->gen > max_model->def->gen) { 844 error_setg(errp, "Selected CPU generation is too new. Maximum " 845 "supported model in the configuration: \'%s\'", 846 max_model->def->name); 847 return; 848 } else if (model->def->gen == max_model->def->gen && 849 model->def->ec_ga > max_model->def->ec_ga) { 850 error_setg(errp, "Selected CPU GA level is too new. Maximum " 851 "supported model in the configuration: \'%s\'", 852 max_model->def->name); 853 return; 854 } 855 856 /* detect the missing features to properly report them */ 857 bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX); 858 if (bitmap_empty(missing, S390_FEAT_MAX)) { 859 return; 860 } 861 862 error_setg(errp, " "); 863 s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat); 864 error_prepend(errp, "Some features requested in the CPU model are not " 865 "available in the configuration: "); 866 } 867 868 static S390CPUModel *get_max_cpu_model(Error **errp) 869 { 870 static S390CPUModel max_model; 871 static bool cached; 872 873 if (cached) { 874 return &max_model; 875 } 876 877 if (kvm_enabled()) { 878 kvm_s390_get_host_cpu_model(&max_model, errp); 879 } else { 880 max_model.def = s390_find_cpu_def(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 881 QEMU_MAX_CPU_EC_GA, NULL); 882 bitmap_copy(max_model.features, qemu_max_cpu_feat, S390_FEAT_MAX); 883 } 884 if (!*errp) { 885 cached = true; 886 return &max_model; 887 } 888 return NULL; 889 } 890 891 static inline void apply_cpu_model(const S390CPUModel *model, Error **errp) 892 { 893 #ifndef CONFIG_USER_ONLY 894 static S390CPUModel applied_model; 895 static bool applied; 896 897 /* 898 * We have the same model for all VCPUs. KVM can only be configured before 899 * any VCPUs are defined in KVM. 900 */ 901 if (applied) { 902 if (model && memcmp(&applied_model, model, sizeof(S390CPUModel))) { 903 error_setg(errp, "Mixed CPU models are not supported on s390x."); 904 } 905 return; 906 } 907 908 if (kvm_enabled()) { 909 kvm_s390_apply_cpu_model(model, errp); 910 } 911 912 if (!*errp) { 913 applied = true; 914 if (model) { 915 applied_model = *model; 916 } 917 } 918 #endif 919 } 920 921 void s390_realize_cpu_model(CPUState *cs, Error **errp) 922 { 923 S390CPUClass *xcc = S390_CPU_GET_CLASS(cs); 924 S390CPU *cpu = S390_CPU(cs); 925 const S390CPUModel *max_model; 926 927 if (xcc->kvm_required && !kvm_enabled()) { 928 error_setg(errp, "CPU definition requires KVM"); 929 return; 930 } 931 932 if (!cpu->model) { 933 /* no host model support -> perform compatibility stuff */ 934 apply_cpu_model(NULL, errp); 935 return; 936 } 937 938 max_model = get_max_cpu_model(errp); 939 if (*errp) { 940 error_prepend(errp, "CPU models are not available: "); 941 return; 942 } 943 944 /* copy over properties that can vary */ 945 cpu->model->lowest_ibc = max_model->lowest_ibc; 946 cpu->model->cpu_id = max_model->cpu_id; 947 cpu->model->cpu_id_format = max_model->cpu_id_format; 948 cpu->model->cpu_ver = max_model->cpu_ver; 949 950 check_consistency(cpu->model); 951 check_compatibility(max_model, cpu->model, errp); 952 if (*errp) { 953 return; 954 } 955 956 apply_cpu_model(cpu->model, errp); 957 958 #if !defined(CONFIG_USER_ONLY) 959 cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model); 960 if (tcg_enabled()) { 961 /* basic mode, write the cpu address into the first 4 bit of the ID */ 962 cpu->env.cpuid = deposit64(cpu->env.cpuid, 54, 4, cpu->env.core_id); 963 } 964 #endif 965 } 966 967 static void get_feature(Object *obj, Visitor *v, const char *name, 968 void *opaque, Error **errp) 969 { 970 S390Feat feat = (S390Feat) opaque; 971 S390CPU *cpu = S390_CPU(obj); 972 bool value; 973 974 if (!cpu->model) { 975 error_setg(errp, "Details about the host CPU model are not available, " 976 "features cannot be queried."); 977 return; 978 } 979 980 value = test_bit(feat, cpu->model->features); 981 visit_type_bool(v, name, &value, errp); 982 } 983 984 static void set_feature(Object *obj, Visitor *v, const char *name, 985 void *opaque, Error **errp) 986 { 987 S390Feat feat = (S390Feat) opaque; 988 DeviceState *dev = DEVICE(obj); 989 S390CPU *cpu = S390_CPU(obj); 990 bool value; 991 992 if (dev->realized) { 993 error_setg(errp, "Attempt to set property '%s' on '%s' after " 994 "it was realized", name, object_get_typename(obj)); 995 return; 996 } else if (!cpu->model) { 997 error_setg(errp, "Details about the host CPU model are not available, " 998 "features cannot be changed."); 999 return; 1000 } 1001 1002 visit_type_bool(v, name, &value, errp); 1003 if (*errp) { 1004 return; 1005 } 1006 if (value) { 1007 if (!test_bit(feat, cpu->model->def->full_feat)) { 1008 error_setg(errp, "Feature '%s' is not available for CPU model '%s'," 1009 " it was introduced with later models.", 1010 name, cpu->model->def->name); 1011 return; 1012 } 1013 set_bit(feat, cpu->model->features); 1014 } else { 1015 clear_bit(feat, cpu->model->features); 1016 } 1017 } 1018 1019 static void get_feature_group(Object *obj, Visitor *v, const char *name, 1020 void *opaque, Error **errp) 1021 { 1022 S390FeatGroup group = (S390FeatGroup) opaque; 1023 const S390FeatGroupDef *def = s390_feat_group_def(group); 1024 S390CPU *cpu = S390_CPU(obj); 1025 S390FeatBitmap tmp; 1026 bool value; 1027 1028 if (!cpu->model) { 1029 error_setg(errp, "Details about the host CPU model are not available, " 1030 "features cannot be queried."); 1031 return; 1032 } 1033 1034 /* a group is enabled if all features are enabled */ 1035 bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX); 1036 value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX); 1037 visit_type_bool(v, name, &value, errp); 1038 } 1039 1040 static void set_feature_group(Object *obj, Visitor *v, const char *name, 1041 void *opaque, Error **errp) 1042 { 1043 S390FeatGroup group = (S390FeatGroup) opaque; 1044 const S390FeatGroupDef *def = s390_feat_group_def(group); 1045 DeviceState *dev = DEVICE(obj); 1046 S390CPU *cpu = S390_CPU(obj); 1047 bool value; 1048 1049 if (dev->realized) { 1050 error_setg(errp, "Attempt to set property '%s' on '%s' after " 1051 "it was realized", name, object_get_typename(obj)); 1052 return; 1053 } else if (!cpu->model) { 1054 error_setg(errp, "Details about the host CPU model are not available, " 1055 "features cannot be changed."); 1056 return; 1057 } 1058 1059 visit_type_bool(v, name, &value, errp); 1060 if (*errp) { 1061 return; 1062 } 1063 if (value) { 1064 /* groups are added in one shot, so an intersect is sufficient */ 1065 if (!bitmap_intersects(def->feat, cpu->model->def->full_feat, 1066 S390_FEAT_MAX)) { 1067 error_setg(errp, "Group '%s' is not available for CPU model '%s'," 1068 " it was introduced with later models.", 1069 name, cpu->model->def->name); 1070 return; 1071 } 1072 bitmap_or(cpu->model->features, cpu->model->features, def->feat, 1073 S390_FEAT_MAX); 1074 } else { 1075 bitmap_andnot(cpu->model->features, cpu->model->features, def->feat, 1076 S390_FEAT_MAX); 1077 } 1078 } 1079 1080 void s390_cpu_model_register_props(Object *obj) 1081 { 1082 S390FeatGroup group; 1083 S390Feat feat; 1084 1085 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 1086 const S390FeatDef *def = s390_feat_def(feat); 1087 object_property_add(obj, def->name, "bool", get_feature, 1088 set_feature, NULL, (void *) feat, NULL); 1089 object_property_set_description(obj, def->name, def->desc , NULL); 1090 } 1091 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 1092 const S390FeatGroupDef *def = s390_feat_group_def(group); 1093 object_property_add(obj, def->name, "bool", get_feature_group, 1094 set_feature_group, NULL, (void *) group, NULL); 1095 object_property_set_description(obj, def->name, def->desc , NULL); 1096 } 1097 } 1098 1099 static void s390_cpu_model_initfn(Object *obj) 1100 { 1101 S390CPU *cpu = S390_CPU(obj); 1102 S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu); 1103 1104 cpu->model = g_malloc0(sizeof(*cpu->model)); 1105 /* copy the model, so we can modify it */ 1106 cpu->model->def = xcc->cpu_def; 1107 if (xcc->is_static) { 1108 /* base model - features will never change */ 1109 bitmap_copy(cpu->model->features, cpu->model->def->base_feat, 1110 S390_FEAT_MAX); 1111 } else { 1112 /* latest model - features can change */ 1113 bitmap_copy(cpu->model->features, 1114 cpu->model->def->default_feat, S390_FEAT_MAX); 1115 } 1116 } 1117 1118 static S390CPUDef s390_qemu_cpu_def; 1119 static S390CPUModel s390_qemu_cpu_model; 1120 1121 /* Set the qemu CPU model (on machine initialization). Must not be called 1122 * once CPUs have been created. 1123 */ 1124 void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga, 1125 const S390FeatInit feat_init) 1126 { 1127 const S390CPUDef *def = s390_find_cpu_def(type, gen, ec_ga, NULL); 1128 1129 g_assert(def); 1130 g_assert(QTAILQ_EMPTY_RCU(&cpus)); 1131 1132 /* TCG emulates some features that can usually not be enabled with 1133 * the emulated machine generation. Make sure they can be enabled 1134 * when using the QEMU model by adding them to full_feat. We have 1135 * to copy the definition to do that. 1136 */ 1137 memcpy(&s390_qemu_cpu_def, def, sizeof(s390_qemu_cpu_def)); 1138 bitmap_or(s390_qemu_cpu_def.full_feat, s390_qemu_cpu_def.full_feat, 1139 qemu_max_cpu_feat, S390_FEAT_MAX); 1140 1141 /* build the CPU model */ 1142 s390_qemu_cpu_model.def = &s390_qemu_cpu_def; 1143 bitmap_zero(s390_qemu_cpu_model.features, S390_FEAT_MAX); 1144 s390_init_feat_bitmap(feat_init, s390_qemu_cpu_model.features); 1145 } 1146 1147 static void s390_qemu_cpu_model_initfn(Object *obj) 1148 { 1149 S390CPU *cpu = S390_CPU(obj); 1150 1151 cpu->model = g_malloc0(sizeof(*cpu->model)); 1152 /* copy the CPU model so we can modify it */ 1153 memcpy(cpu->model, &s390_qemu_cpu_model, sizeof(*cpu->model)); 1154 } 1155 1156 static void s390_max_cpu_model_initfn(Object *obj) 1157 { 1158 const S390CPUModel *max_model; 1159 S390CPU *cpu = S390_CPU(obj); 1160 Error *local_err = NULL; 1161 1162 if (kvm_enabled() && !kvm_s390_cpu_models_supported()) { 1163 /* "max" and "host" always work, even without CPU model support */ 1164 return; 1165 } 1166 1167 max_model = get_max_cpu_model(&local_err); 1168 if (local_err) { 1169 /* we expect errors only under KVM, when actually querying the kernel */ 1170 g_assert(kvm_enabled()); 1171 error_report_err(local_err); 1172 /* fallback to unsupported CPU models */ 1173 return; 1174 } 1175 1176 cpu->model = g_new(S390CPUModel, 1); 1177 /* copy the CPU model so we can modify it */ 1178 memcpy(cpu->model, max_model, sizeof(*cpu->model)); 1179 } 1180 1181 static void s390_cpu_model_finalize(Object *obj) 1182 { 1183 S390CPU *cpu = S390_CPU(obj); 1184 1185 g_free(cpu->model); 1186 cpu->model = NULL; 1187 } 1188 1189 static bool get_is_migration_safe(Object *obj, Error **errp) 1190 { 1191 return S390_CPU_GET_CLASS(obj)->is_migration_safe; 1192 } 1193 1194 static bool get_is_static(Object *obj, Error **errp) 1195 { 1196 return S390_CPU_GET_CLASS(obj)->is_static; 1197 } 1198 1199 static char *get_description(Object *obj, Error **errp) 1200 { 1201 return g_strdup(S390_CPU_GET_CLASS(obj)->desc); 1202 } 1203 1204 void s390_cpu_model_class_register_props(ObjectClass *oc) 1205 { 1206 object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe, 1207 NULL, NULL); 1208 object_class_property_add_bool(oc, "static", get_is_static, 1209 NULL, NULL); 1210 object_class_property_add_str(oc, "description", get_description, NULL, 1211 NULL); 1212 } 1213 1214 #ifdef CONFIG_KVM 1215 static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data) 1216 { 1217 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1218 1219 xcc->kvm_required = true; 1220 xcc->desc = "KVM only: All recognized features"; 1221 } 1222 #endif 1223 1224 static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data) 1225 { 1226 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1227 1228 /* all base models are migration safe */ 1229 xcc->cpu_def = (const S390CPUDef *) data; 1230 xcc->is_migration_safe = true; 1231 xcc->is_static = true; 1232 xcc->desc = xcc->cpu_def->desc; 1233 } 1234 1235 static void s390_cpu_model_class_init(ObjectClass *oc, void *data) 1236 { 1237 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1238 1239 /* model that can change between QEMU versions */ 1240 xcc->cpu_def = (const S390CPUDef *) data; 1241 xcc->is_migration_safe = true; 1242 xcc->desc = xcc->cpu_def->desc; 1243 } 1244 1245 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data) 1246 { 1247 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1248 1249 xcc->is_migration_safe = true; 1250 xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s", 1251 qemu_hw_version()); 1252 } 1253 1254 static void s390_max_cpu_model_class_init(ObjectClass *oc, void *data) 1255 { 1256 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1257 1258 /* 1259 * The "max" model is neither static nor migration safe. Under KVM 1260 * it represents the "host" model. Under TCG it represents some kind of 1261 * "qemu" CPU model without compat handling and maybe with some additional 1262 * CPU features that are not yet unlocked in the "qemu" model. 1263 */ 1264 xcc->desc = 1265 "Enables all features supported by the accelerator in the current host"; 1266 } 1267 1268 /* Generate type name for a cpu model. Caller has to free the string. */ 1269 static char *s390_cpu_type_name(const char *model_name) 1270 { 1271 return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name); 1272 } 1273 1274 /* Generate type name for a base cpu model. Caller has to free the string. */ 1275 static char *s390_base_cpu_type_name(const char *model_name) 1276 { 1277 return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name); 1278 } 1279 1280 ObjectClass *s390_cpu_class_by_name(const char *name) 1281 { 1282 char *typename = s390_cpu_type_name(name); 1283 ObjectClass *oc; 1284 1285 oc = object_class_by_name(typename); 1286 g_free(typename); 1287 return oc; 1288 } 1289 1290 static const TypeInfo qemu_s390_cpu_type_info = { 1291 .name = S390_CPU_TYPE_NAME("qemu"), 1292 .parent = TYPE_S390_CPU, 1293 .instance_init = s390_qemu_cpu_model_initfn, 1294 .instance_finalize = s390_cpu_model_finalize, 1295 .class_init = s390_qemu_cpu_model_class_init, 1296 }; 1297 1298 static const TypeInfo max_s390_cpu_type_info = { 1299 .name = S390_CPU_TYPE_NAME("max"), 1300 .parent = TYPE_S390_CPU, 1301 .instance_init = s390_max_cpu_model_initfn, 1302 .instance_finalize = s390_cpu_model_finalize, 1303 .class_init = s390_max_cpu_model_class_init, 1304 }; 1305 1306 #ifdef CONFIG_KVM 1307 static const TypeInfo host_s390_cpu_type_info = { 1308 .name = S390_CPU_TYPE_NAME("host"), 1309 .parent = S390_CPU_TYPE_NAME("max"), 1310 .class_init = s390_host_cpu_model_class_init, 1311 }; 1312 #endif 1313 1314 static void init_ignored_base_feat(void) 1315 { 1316 static const int feats[] = { 1317 /* MSA subfunctions that could not be available on certain machines */ 1318 S390_FEAT_KMAC_DEA, 1319 S390_FEAT_KMAC_TDEA_128, 1320 S390_FEAT_KMAC_TDEA_192, 1321 S390_FEAT_KMC_DEA, 1322 S390_FEAT_KMC_TDEA_128, 1323 S390_FEAT_KMC_TDEA_192, 1324 S390_FEAT_KM_DEA, 1325 S390_FEAT_KM_TDEA_128, 1326 S390_FEAT_KM_TDEA_192, 1327 S390_FEAT_KIMD_SHA_1, 1328 S390_FEAT_KLMD_SHA_1, 1329 /* CSSKE is deprecated on newer generations */ 1330 S390_FEAT_CONDITIONAL_SSKE, 1331 }; 1332 int i; 1333 1334 for (i = 0; i < ARRAY_SIZE(feats); i++) { 1335 set_bit(feats[i], ignored_base_feat); 1336 } 1337 } 1338 1339 static void register_types(void) 1340 { 1341 static const S390FeatInit qemu_latest_init = { S390_FEAT_LIST_QEMU_LATEST }; 1342 int i; 1343 1344 init_ignored_base_feat(); 1345 1346 /* init all bitmaps from gnerated data initially */ 1347 s390_init_feat_bitmap(qemu_max_cpu_feat_init, qemu_max_cpu_feat); 1348 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 1349 s390_init_feat_bitmap(s390_cpu_defs[i].base_init, 1350 s390_cpu_defs[i].base_feat); 1351 s390_init_feat_bitmap(s390_cpu_defs[i].default_init, 1352 s390_cpu_defs[i].default_feat); 1353 s390_init_feat_bitmap(s390_cpu_defs[i].full_init, 1354 s390_cpu_defs[i].full_feat); 1355 } 1356 1357 /* initialize the qemu model with latest definition */ 1358 s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 1359 QEMU_MAX_CPU_EC_GA, qemu_latest_init); 1360 1361 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 1362 char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name); 1363 TypeInfo ti_base = { 1364 .name = base_name, 1365 .parent = TYPE_S390_CPU, 1366 .instance_init = s390_cpu_model_initfn, 1367 .instance_finalize = s390_cpu_model_finalize, 1368 .class_init = s390_base_cpu_model_class_init, 1369 .class_data = (void *) &s390_cpu_defs[i], 1370 }; 1371 char *name = s390_cpu_type_name(s390_cpu_defs[i].name); 1372 TypeInfo ti = { 1373 .name = name, 1374 .parent = TYPE_S390_CPU, 1375 .instance_init = s390_cpu_model_initfn, 1376 .instance_finalize = s390_cpu_model_finalize, 1377 .class_init = s390_cpu_model_class_init, 1378 .class_data = (void *) &s390_cpu_defs[i], 1379 }; 1380 1381 type_register_static(&ti_base); 1382 type_register_static(&ti); 1383 g_free(base_name); 1384 g_free(name); 1385 } 1386 1387 type_register_static(&qemu_s390_cpu_type_info); 1388 type_register_static(&max_s390_cpu_type_info); 1389 #ifdef CONFIG_KVM 1390 type_register_static(&host_s390_cpu_type_info); 1391 #endif 1392 } 1393 1394 type_init(register_types) 1395