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