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