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