1 /* 2 * CPU models for s390x 3 * 4 * Copyright 2016 IBM Corp. 5 * 6 * Author(s): David Hildenbrand <dahi@linux.vnet.ibm.com> 7 * 8 * This work is licensed under the terms of the GNU GPL, version 2 or (at 9 * your option) any later version. See the COPYING file in the top-level 10 * directory. 11 */ 12 13 #include "qemu/osdep.h" 14 #include "cpu.h" 15 #include "internal.h" 16 #include "kvm_s390x.h" 17 #include "sysemu/kvm.h" 18 #include "sysemu/tcg.h" 19 #include "qapi/error.h" 20 #include "qapi/visitor.h" 21 #include "qemu/error-report.h" 22 #include "qemu/module.h" 23 #include "qemu/qemu-print.h" 24 #include "qapi/qmp/qerror.h" 25 #include "qapi/qobject-input-visitor.h" 26 #include "qapi/qmp/qdict.h" 27 #ifndef CONFIG_USER_ONLY 28 #include "sysemu/arch_init.h" 29 #include "hw/pci/pci.h" 30 #endif 31 #include "qapi/qapi-commands-machine-target.h" 32 33 #define CPUDEF_INIT(_type, _gen, _ec_ga, _mha_pow, _hmfai, _name, _desc) \ 34 { \ 35 .name = _name, \ 36 .type = _type, \ 37 .gen = _gen, \ 38 .ec_ga = _ec_ga, \ 39 .mha_pow = _mha_pow, \ 40 .hmfai = _hmfai, \ 41 .desc = _desc, \ 42 .base_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _BASE }, \ 43 .default_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _DEFAULT }, \ 44 .full_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _FULL }, \ 45 } 46 47 /* 48 * CPU definition list in order of release. Up to generation 14 base features 49 * of a following release have been a superset of the previous release. With 50 * generation 15 one base feature and one optional feature have been deprecated. 51 */ 52 static S390CPUDef s390_cpu_defs[] = { 53 CPUDEF_INIT(0x2064, 7, 1, 38, 0x00000000U, "z900", "IBM zSeries 900 GA1"), 54 CPUDEF_INIT(0x2064, 7, 2, 38, 0x00000000U, "z900.2", "IBM zSeries 900 GA2"), 55 CPUDEF_INIT(0x2064, 7, 3, 38, 0x00000000U, "z900.3", "IBM zSeries 900 GA3"), 56 CPUDEF_INIT(0x2066, 7, 3, 38, 0x00000000U, "z800", "IBM zSeries 800 GA1"), 57 CPUDEF_INIT(0x2084, 8, 1, 38, 0x00000000U, "z990", "IBM zSeries 990 GA1"), 58 CPUDEF_INIT(0x2084, 8, 2, 38, 0x00000000U, "z990.2", "IBM zSeries 990 GA2"), 59 CPUDEF_INIT(0x2084, 8, 3, 38, 0x00000000U, "z990.3", "IBM zSeries 990 GA3"), 60 CPUDEF_INIT(0x2086, 8, 3, 38, 0x00000000U, "z890", "IBM zSeries 880 GA1"), 61 CPUDEF_INIT(0x2084, 8, 4, 38, 0x00000000U, "z990.4", "IBM zSeries 990 GA4"), 62 CPUDEF_INIT(0x2086, 8, 4, 38, 0x00000000U, "z890.2", "IBM zSeries 880 GA2"), 63 CPUDEF_INIT(0x2084, 8, 5, 38, 0x00000000U, "z990.5", "IBM zSeries 990 GA5"), 64 CPUDEF_INIT(0x2086, 8, 5, 38, 0x00000000U, "z890.3", "IBM zSeries 880 GA3"), 65 CPUDEF_INIT(0x2094, 9, 1, 40, 0x00000000U, "z9EC", "IBM System z9 EC GA1"), 66 CPUDEF_INIT(0x2094, 9, 2, 40, 0x00000000U, "z9EC.2", "IBM System z9 EC GA2"), 67 CPUDEF_INIT(0x2096, 9, 2, 40, 0x00000000U, "z9BC", "IBM System z9 BC GA1"), 68 CPUDEF_INIT(0x2094, 9, 3, 40, 0x00000000U, "z9EC.3", "IBM System z9 EC GA3"), 69 CPUDEF_INIT(0x2096, 9, 3, 40, 0x00000000U, "z9BC.2", "IBM System z9 BC GA2"), 70 CPUDEF_INIT(0x2097, 10, 1, 43, 0x00000000U, "z10EC", "IBM System z10 EC GA1"), 71 CPUDEF_INIT(0x2097, 10, 2, 43, 0x00000000U, "z10EC.2", "IBM System z10 EC GA2"), 72 CPUDEF_INIT(0x2098, 10, 2, 43, 0x00000000U, "z10BC", "IBM System z10 BC GA1"), 73 CPUDEF_INIT(0x2097, 10, 3, 43, 0x00000000U, "z10EC.3", "IBM System z10 EC GA3"), 74 CPUDEF_INIT(0x2098, 10, 3, 43, 0x00000000U, "z10BC.2", "IBM System z10 BC GA2"), 75 CPUDEF_INIT(0x2817, 11, 1, 44, 0x08000000U, "z196", "IBM zEnterprise 196 GA1"), 76 CPUDEF_INIT(0x2817, 11, 2, 44, 0x08000000U, "z196.2", "IBM zEnterprise 196 GA2"), 77 CPUDEF_INIT(0x2818, 11, 2, 44, 0x08000000U, "z114", "IBM zEnterprise 114 GA1"), 78 CPUDEF_INIT(0x2827, 12, 1, 44, 0x08000000U, "zEC12", "IBM zEnterprise EC12 GA1"), 79 CPUDEF_INIT(0x2827, 12, 2, 44, 0x08000000U, "zEC12.2", "IBM zEnterprise EC12 GA2"), 80 CPUDEF_INIT(0x2828, 12, 2, 44, 0x08000000U, "zBC12", "IBM zEnterprise BC12 GA1"), 81 CPUDEF_INIT(0x2964, 13, 1, 47, 0x08000000U, "z13", "IBM z13 GA1"), 82 CPUDEF_INIT(0x2964, 13, 2, 47, 0x08000000U, "z13.2", "IBM z13 GA2"), 83 CPUDEF_INIT(0x2965, 13, 2, 47, 0x08000000U, "z13s", "IBM z13s GA1"), 84 CPUDEF_INIT(0x3906, 14, 1, 47, 0x08000000U, "z14", "IBM z14 GA1"), 85 CPUDEF_INIT(0x3906, 14, 2, 47, 0x08000000U, "z14.2", "IBM z14 GA2"), 86 CPUDEF_INIT(0x3907, 14, 1, 47, 0x08000000U, "z14ZR1", "IBM z14 Model ZR1 GA1"), 87 CPUDEF_INIT(0x8561, 15, 1, 47, 0x08000000U, "gen15a", "IBM z15 GA1"), 88 CPUDEF_INIT(0x8562, 15, 1, 47, 0x08000000U, "gen15b", "IBM 8562 GA1"), 89 }; 90 91 #define QEMU_MAX_CPU_TYPE 0x2964 92 #define QEMU_MAX_CPU_GEN 13 93 #define QEMU_MAX_CPU_EC_GA 2 94 static const S390FeatInit qemu_max_cpu_feat_init = { S390_FEAT_LIST_QEMU_MAX }; 95 static S390FeatBitmap qemu_max_cpu_feat; 96 97 /* features part of a base model but not relevant for finding a base model */ 98 S390FeatBitmap ignored_base_feat; 99 100 void s390_cpudef_featoff(uint8_t gen, uint8_t ec_ga, S390Feat feat) 101 { 102 const S390CPUDef *def; 103 104 def = s390_find_cpu_def(0, gen, ec_ga, NULL); 105 clear_bit(feat, (unsigned long *)&def->default_feat); 106 } 107 108 void s390_cpudef_featoff_greater(uint8_t gen, uint8_t ec_ga, S390Feat feat) 109 { 110 int i; 111 112 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 113 const S390CPUDef *def = &s390_cpu_defs[i]; 114 115 if (def->gen < gen) { 116 continue; 117 } 118 if (def->gen == gen && def->ec_ga < ec_ga) { 119 continue; 120 } 121 122 clear_bit(feat, (unsigned long *)&def->default_feat); 123 } 124 } 125 126 void s390_cpudef_group_featoff_greater(uint8_t gen, uint8_t ec_ga, 127 S390FeatGroup group) 128 { 129 const S390FeatGroupDef *group_def = s390_feat_group_def(group); 130 S390FeatBitmap group_def_off; 131 int i; 132 133 bitmap_complement(group_def_off, group_def->feat, S390_FEAT_MAX); 134 135 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 136 const S390CPUDef *cpu_def = &s390_cpu_defs[i]; 137 138 if (cpu_def->gen < gen) { 139 continue; 140 } 141 if (cpu_def->gen == gen && cpu_def->ec_ga < ec_ga) { 142 continue; 143 } 144 145 bitmap_and((unsigned long *)&cpu_def->default_feat, 146 cpu_def->default_feat, group_def_off, S390_FEAT_MAX); 147 } 148 } 149 150 uint32_t s390_get_hmfai(void) 151 { 152 static S390CPU *cpu; 153 154 if (!cpu) { 155 cpu = S390_CPU(qemu_get_cpu(0)); 156 } 157 158 if (!cpu || !cpu->model) { 159 return 0; 160 } 161 return cpu->model->def->hmfai; 162 } 163 164 uint8_t s390_get_mha_pow(void) 165 { 166 static S390CPU *cpu; 167 168 if (!cpu) { 169 cpu = S390_CPU(qemu_get_cpu(0)); 170 } 171 172 if (!cpu || !cpu->model) { 173 return 0; 174 } 175 return cpu->model->def->mha_pow; 176 } 177 178 uint32_t s390_get_ibc_val(void) 179 { 180 uint16_t unblocked_ibc, lowest_ibc; 181 static S390CPU *cpu; 182 183 if (!cpu) { 184 cpu = S390_CPU(qemu_get_cpu(0)); 185 } 186 187 if (!cpu || !cpu->model) { 188 return 0; 189 } 190 unblocked_ibc = s390_ibc_from_cpu_model(cpu->model); 191 lowest_ibc = cpu->model->lowest_ibc; 192 /* the lowest_ibc always has to be <= unblocked_ibc */ 193 if (!lowest_ibc || lowest_ibc > unblocked_ibc) { 194 return 0; 195 } 196 return ((uint32_t) lowest_ibc << 16) | unblocked_ibc; 197 } 198 199 void s390_get_feat_block(S390FeatType type, uint8_t *data) 200 { 201 static S390CPU *cpu; 202 203 if (!cpu) { 204 cpu = S390_CPU(qemu_get_cpu(0)); 205 } 206 207 if (!cpu || !cpu->model) { 208 return; 209 } 210 s390_fill_feat_block(cpu->model->features, type, data); 211 } 212 213 bool s390_has_feat(S390Feat feat) 214 { 215 static S390CPU *cpu; 216 217 if (!cpu) { 218 cpu = S390_CPU(qemu_get_cpu(0)); 219 } 220 221 if (!cpu || !cpu->model) { 222 #ifdef CONFIG_KVM 223 if (kvm_enabled()) { 224 if (feat == S390_FEAT_VECTOR) { 225 return kvm_check_extension(kvm_state, 226 KVM_CAP_S390_VECTOR_REGISTERS); 227 } 228 if (feat == S390_FEAT_RUNTIME_INSTRUMENTATION) { 229 return kvm_s390_get_ri(); 230 } 231 if (feat == S390_FEAT_MSA_EXT_3) { 232 return true; 233 } 234 } 235 #endif 236 if (feat == S390_FEAT_ZPCI) { 237 return true; 238 } 239 return 0; 240 } 241 return test_bit(feat, cpu->model->features); 242 } 243 244 uint8_t s390_get_gen_for_cpu_type(uint16_t type) 245 { 246 int i; 247 248 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 249 if (s390_cpu_defs[i].type == type) { 250 return s390_cpu_defs[i].gen; 251 } 252 } 253 return 0; 254 } 255 256 const S390CPUDef *s390_find_cpu_def(uint16_t type, uint8_t gen, uint8_t ec_ga, 257 S390FeatBitmap features) 258 { 259 const S390CPUDef *last_compatible = NULL; 260 const S390CPUDef *matching_cpu_type = NULL; 261 int i; 262 263 if (!gen) { 264 ec_ga = 0; 265 } 266 if (!gen && type) { 267 gen = s390_get_gen_for_cpu_type(type); 268 } 269 270 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 271 const S390CPUDef *def = &s390_cpu_defs[i]; 272 S390FeatBitmap missing; 273 274 /* don't even try newer generations if we know the generation */ 275 if (gen) { 276 if (def->gen > gen) { 277 break; 278 } else if (def->gen == gen && ec_ga && def->ec_ga > ec_ga) { 279 break; 280 } 281 } 282 283 if (features) { 284 /* see if the model satisfies the minimum features */ 285 bitmap_andnot(missing, def->base_feat, features, S390_FEAT_MAX); 286 /* 287 * Ignore certain features that are in the base model, but not 288 * relevant for the search (esp. MSA subfunctions). 289 */ 290 bitmap_andnot(missing, missing, ignored_base_feat, S390_FEAT_MAX); 291 if (!bitmap_empty(missing, S390_FEAT_MAX)) { 292 break; 293 } 294 } 295 296 /* stop the search if we found the exact model */ 297 if (def->type == type && def->ec_ga == ec_ga) { 298 return def; 299 } 300 /* remember if we've at least seen one with the same cpu type */ 301 if (def->type == type) { 302 matching_cpu_type = def; 303 } 304 last_compatible = def; 305 } 306 /* prefer the model with the same cpu type, esp. don't take the BC for EC */ 307 if (matching_cpu_type) { 308 return matching_cpu_type; 309 } 310 return last_compatible; 311 } 312 313 static void s390_print_cpu_model_list_entry(gpointer data, gpointer user_data) 314 { 315 const S390CPUClass *scc = S390_CPU_CLASS((ObjectClass *)data); 316 char *name = g_strdup(object_class_get_name((ObjectClass *)data)); 317 const char *details = ""; 318 319 if (scc->is_static) { 320 details = "(static, migration-safe)"; 321 } else if (scc->is_migration_safe) { 322 details = "(migration-safe)"; 323 } 324 325 /* strip off the -s390x-cpu */ 326 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; 327 qemu_printf("s390 %-15s %-35s %s\n", name, scc->desc, details); 328 g_free(name); 329 } 330 331 static gint s390_cpu_list_compare(gconstpointer a, gconstpointer b) 332 { 333 const S390CPUClass *cc_a = S390_CPU_CLASS((ObjectClass *)a); 334 const S390CPUClass *cc_b = S390_CPU_CLASS((ObjectClass *)b); 335 const char *name_a = object_class_get_name((ObjectClass *)a); 336 const char *name_b = object_class_get_name((ObjectClass *)b); 337 338 /* 339 * Move qemu, host and max to the top of the list, qemu first, host second, 340 * max third. 341 */ 342 if (name_a[0] == 'q') { 343 return -1; 344 } else if (name_b[0] == 'q') { 345 return 1; 346 } else if (name_a[0] == 'h') { 347 return -1; 348 } else if (name_b[0] == 'h') { 349 return 1; 350 } else if (name_a[0] == 'm') { 351 return -1; 352 } else if (name_b[0] == 'm') { 353 return 1; 354 } 355 356 /* keep the same order we have in our table (sorted by release date) */ 357 if (cc_a->cpu_def != cc_b->cpu_def) { 358 return cc_a->cpu_def - cc_b->cpu_def; 359 } 360 361 /* exact same definition - list base model first */ 362 return cc_a->is_static ? -1 : 1; 363 } 364 365 void s390_cpu_list(void) 366 { 367 S390FeatGroup group; 368 S390Feat feat; 369 GSList *list; 370 371 list = object_class_get_list(TYPE_S390_CPU, false); 372 list = g_slist_sort(list, s390_cpu_list_compare); 373 g_slist_foreach(list, s390_print_cpu_model_list_entry, NULL); 374 g_slist_free(list); 375 376 qemu_printf("\nRecognized feature flags:\n"); 377 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 378 const S390FeatDef *def = s390_feat_def(feat); 379 380 qemu_printf("%-20s %-50s\n", def->name, def->desc); 381 } 382 383 qemu_printf("\nRecognized feature groups:\n"); 384 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 385 const S390FeatGroupDef *def = s390_feat_group_def(group); 386 387 qemu_printf("%-20s %-50s\n", def->name, def->desc); 388 } 389 } 390 391 static S390CPUModel *get_max_cpu_model(Error **errp); 392 393 #ifndef CONFIG_USER_ONLY 394 static void list_add_feat(const char *name, void *opaque); 395 396 static void check_unavailable_features(const S390CPUModel *max_model, 397 const S390CPUModel *model, 398 strList **unavailable) 399 { 400 S390FeatBitmap missing; 401 402 /* check general model compatibility */ 403 if (max_model->def->gen < model->def->gen || 404 (max_model->def->gen == model->def->gen && 405 max_model->def->ec_ga < model->def->ec_ga)) { 406 list_add_feat("type", unavailable); 407 } 408 409 /* detect missing features if any to properly report them */ 410 bitmap_andnot(missing, model->features, max_model->features, 411 S390_FEAT_MAX); 412 if (!bitmap_empty(missing, S390_FEAT_MAX)) { 413 s390_feat_bitmap_to_ascii(missing, unavailable, list_add_feat); 414 } 415 } 416 417 struct CpuDefinitionInfoListData { 418 CpuDefinitionInfoList *list; 419 S390CPUModel *model; 420 }; 421 422 static void create_cpu_model_list(ObjectClass *klass, void *opaque) 423 { 424 struct CpuDefinitionInfoListData *cpu_list_data = opaque; 425 CpuDefinitionInfoList **cpu_list = &cpu_list_data->list; 426 CpuDefinitionInfoList *entry; 427 CpuDefinitionInfo *info; 428 char *name = g_strdup(object_class_get_name(klass)); 429 S390CPUClass *scc = S390_CPU_CLASS(klass); 430 431 /* strip off the -s390x-cpu */ 432 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; 433 info = g_new0(CpuDefinitionInfo, 1); 434 info->name = name; 435 info->has_migration_safe = true; 436 info->migration_safe = scc->is_migration_safe; 437 info->q_static = scc->is_static; 438 info->q_typename = g_strdup(object_class_get_name(klass)); 439 /* check for unavailable features */ 440 if (cpu_list_data->model) { 441 Object *obj; 442 S390CPU *sc; 443 obj = object_new_with_class(klass); 444 sc = S390_CPU(obj); 445 if (sc->model) { 446 info->has_unavailable_features = true; 447 check_unavailable_features(cpu_list_data->model, sc->model, 448 &info->unavailable_features); 449 } 450 object_unref(obj); 451 } 452 453 entry = g_new0(CpuDefinitionInfoList, 1); 454 entry->value = info; 455 entry->next = *cpu_list; 456 *cpu_list = entry; 457 } 458 459 CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp) 460 { 461 struct CpuDefinitionInfoListData list_data = { 462 .list = NULL, 463 }; 464 465 list_data.model = get_max_cpu_model(NULL); 466 467 object_class_foreach(create_cpu_model_list, TYPE_S390_CPU, false, 468 &list_data); 469 470 return list_data.list; 471 } 472 473 static void cpu_model_from_info(S390CPUModel *model, const CpuModelInfo *info, 474 Error **errp) 475 { 476 Error *err = NULL; 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_with_class(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, &err); 514 if (err) { 515 error_propagate(errp, err); 516 visit_free(visitor); 517 object_unref(obj); 518 return; 519 } 520 for (e = qdict_first(qdict); e; e = qdict_next(qdict, e)) { 521 object_property_set(obj, visitor, e->key, &err); 522 if (err) { 523 break; 524 } 525 } 526 if (!err) { 527 visit_check_struct(visitor, errp); 528 } 529 visit_end_struct(visitor, NULL); 530 visit_free(visitor); 531 if (err) { 532 error_propagate(errp, err); 533 object_unref(obj); 534 return; 535 } 536 } 537 538 /* copy the model and throw the cpu away */ 539 memcpy(model, cpu->model, sizeof(*model)); 540 object_unref(obj); 541 } 542 543 static void qdict_add_disabled_feat(const char *name, void *opaque) 544 { 545 qdict_put_bool(opaque, name, false); 546 } 547 548 static void qdict_add_enabled_feat(const char *name, void *opaque) 549 { 550 qdict_put_bool(opaque, name, true); 551 } 552 553 /* convert S390CPUDef into a static CpuModelInfo */ 554 static void cpu_info_from_model(CpuModelInfo *info, const S390CPUModel *model, 555 bool delta_changes) 556 { 557 QDict *qdict = qdict_new(); 558 S390FeatBitmap bitmap; 559 560 /* always fallback to the static base model */ 561 info->name = g_strdup_printf("%s-base", model->def->name); 562 563 if (delta_changes) { 564 /* features deleted from the base feature set */ 565 bitmap_andnot(bitmap, model->def->base_feat, model->features, 566 S390_FEAT_MAX); 567 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) { 568 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat); 569 } 570 571 /* features added to the base feature set */ 572 bitmap_andnot(bitmap, model->features, model->def->base_feat, 573 S390_FEAT_MAX); 574 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) { 575 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_enabled_feat); 576 } 577 } else { 578 /* expand all features */ 579 s390_feat_bitmap_to_ascii(model->features, qdict, 580 qdict_add_enabled_feat); 581 bitmap_complement(bitmap, model->features, S390_FEAT_MAX); 582 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat); 583 } 584 585 if (!qdict_size(qdict)) { 586 qobject_unref(qdict); 587 } else { 588 info->props = QOBJECT(qdict); 589 info->has_props = true; 590 } 591 } 592 593 CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type, 594 CpuModelInfo *model, 595 Error **errp) 596 { 597 Error *err = NULL; 598 CpuModelExpansionInfo *expansion_info = NULL; 599 S390CPUModel s390_model; 600 bool delta_changes = false; 601 602 /* convert it to our internal representation */ 603 cpu_model_from_info(&s390_model, model, &err); 604 if (err) { 605 error_propagate(errp, err); 606 return NULL; 607 } 608 609 if (type == CPU_MODEL_EXPANSION_TYPE_STATIC) { 610 delta_changes = true; 611 } else if (type != CPU_MODEL_EXPANSION_TYPE_FULL) { 612 error_setg(errp, "The requested expansion type is not supported."); 613 return NULL; 614 } 615 616 /* convert it back to a static representation */ 617 expansion_info = g_new0(CpuModelExpansionInfo, 1); 618 expansion_info->model = g_malloc0(sizeof(*expansion_info->model)); 619 cpu_info_from_model(expansion_info->model, &s390_model, delta_changes); 620 return expansion_info; 621 } 622 623 static void list_add_feat(const char *name, void *opaque) 624 { 625 strList **last = (strList **) opaque; 626 strList *entry; 627 628 entry = g_new0(strList, 1); 629 entry->value = g_strdup(name); 630 entry->next = *last; 631 *last = entry; 632 } 633 634 CpuModelCompareInfo *qmp_query_cpu_model_comparison(CpuModelInfo *infoa, 635 CpuModelInfo *infob, 636 Error **errp) 637 { 638 Error *err = NULL; 639 CpuModelCompareResult feat_result, gen_result; 640 CpuModelCompareInfo *compare_info; 641 S390FeatBitmap missing, added; 642 S390CPUModel modela, modelb; 643 644 /* convert both models to our internal representation */ 645 cpu_model_from_info(&modela, infoa, &err); 646 if (err) { 647 error_propagate(errp, err); 648 return NULL; 649 } 650 cpu_model_from_info(&modelb, infob, &err); 651 if (err) { 652 error_propagate(errp, err); 653 return NULL; 654 } 655 compare_info = g_new0(CpuModelCompareInfo, 1); 656 657 /* check the cpu generation and ga level */ 658 if (modela.def->gen == modelb.def->gen) { 659 if (modela.def->ec_ga == modelb.def->ec_ga) { 660 /* ec and corresponding bc are identical */ 661 gen_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; 662 } else if (modela.def->ec_ga < modelb.def->ec_ga) { 663 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 664 } else { 665 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 666 } 667 } else if (modela.def->gen < modelb.def->gen) { 668 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 669 } else { 670 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 671 } 672 if (gen_result != CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 673 /* both models cannot be made identical */ 674 list_add_feat("type", &compare_info->responsible_properties); 675 } 676 677 /* check the feature set */ 678 if (bitmap_equal(modela.features, modelb.features, S390_FEAT_MAX)) { 679 feat_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; 680 } else { 681 bitmap_andnot(missing, modela.features, modelb.features, S390_FEAT_MAX); 682 s390_feat_bitmap_to_ascii(missing, 683 &compare_info->responsible_properties, 684 list_add_feat); 685 bitmap_andnot(added, modelb.features, modela.features, S390_FEAT_MAX); 686 s390_feat_bitmap_to_ascii(added, &compare_info->responsible_properties, 687 list_add_feat); 688 if (bitmap_empty(missing, S390_FEAT_MAX)) { 689 feat_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 690 } else if (bitmap_empty(added, S390_FEAT_MAX)) { 691 feat_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 692 } else { 693 feat_result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; 694 } 695 } 696 697 /* combine the results */ 698 if (gen_result == feat_result) { 699 compare_info->result = gen_result; 700 } else if (feat_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 701 compare_info->result = gen_result; 702 } else if (gen_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 703 compare_info->result = feat_result; 704 } else { 705 compare_info->result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; 706 } 707 return compare_info; 708 } 709 710 CpuModelBaselineInfo *qmp_query_cpu_model_baseline(CpuModelInfo *infoa, 711 CpuModelInfo *infob, 712 Error **errp) 713 { 714 Error *err = NULL; 715 CpuModelBaselineInfo *baseline_info; 716 S390CPUModel modela, modelb, model; 717 uint16_t cpu_type; 718 uint8_t max_gen_ga; 719 uint8_t max_gen; 720 721 /* convert both models to our internal representation */ 722 cpu_model_from_info(&modela, infoa, &err); 723 if (err) { 724 error_propagate(errp, err); 725 return NULL; 726 } 727 728 cpu_model_from_info(&modelb, infob, &err); 729 if (err) { 730 error_propagate(errp, err); 731 return NULL; 732 } 733 734 /* features both models support */ 735 bitmap_and(model.features, modela.features, modelb.features, S390_FEAT_MAX); 736 737 /* detect the maximum model not regarding features */ 738 if (modela.def->gen == modelb.def->gen) { 739 if (modela.def->type == modelb.def->type) { 740 cpu_type = modela.def->type; 741 } else { 742 cpu_type = 0; 743 } 744 max_gen = modela.def->gen; 745 max_gen_ga = MIN(modela.def->ec_ga, modelb.def->ec_ga); 746 } else if (modela.def->gen > modelb.def->gen) { 747 cpu_type = modelb.def->type; 748 max_gen = modelb.def->gen; 749 max_gen_ga = modelb.def->ec_ga; 750 } else { 751 cpu_type = modela.def->type; 752 max_gen = modela.def->gen; 753 max_gen_ga = modela.def->ec_ga; 754 } 755 756 model.def = s390_find_cpu_def(cpu_type, max_gen, max_gen_ga, 757 model.features); 758 759 /* models without early base features (esan3) are bad */ 760 if (!model.def) { 761 error_setg(errp, "No compatible CPU model could be created as" 762 " important base features are disabled"); 763 return NULL; 764 } 765 766 /* strip off features not part of the max model */ 767 bitmap_and(model.features, model.features, model.def->full_feat, 768 S390_FEAT_MAX); 769 770 baseline_info = g_new0(CpuModelBaselineInfo, 1); 771 baseline_info->model = g_malloc0(sizeof(*baseline_info->model)); 772 cpu_info_from_model(baseline_info->model, &model, true); 773 return baseline_info; 774 } 775 #endif 776 777 static void check_consistency(const S390CPUModel *model) 778 { 779 static int dep[][2] = { 780 { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH }, 781 { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH }, 782 { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH }, 783 { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT }, 784 { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH}, 785 { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT }, 786 { S390_FEAT_DFP_FAST, S390_FEAT_DFP }, 787 { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 }, 788 { S390_FEAT_EDAT_2, S390_FEAT_EDAT}, 789 { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 }, 790 { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 }, 791 { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 }, 792 { S390_FEAT_SIE_CMMA, S390_FEAT_CMM }, 793 { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS }, 794 { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT }, 795 { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 }, 796 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_3 }, 797 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_4 }, 798 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 799 { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR }, 800 { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR }, 801 { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 802 { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP }, 803 { S390_FEAT_CMM_NT, S390_FEAT_CMM }, 804 { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 805 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST }, 806 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 807 { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 }, 808 { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA }, 809 { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA }, 810 { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA }, 811 { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA }, 812 { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA }, 813 { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA }, 814 { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA }, 815 { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA }, 816 { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA }, 817 { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA }, 818 { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA }, 819 { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA }, 820 { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 }, 821 { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 }, 822 { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 }, 823 { S390_FEAT_AP_QUERY_CONFIG_INFO, S390_FEAT_AP }, 824 { S390_FEAT_AP_FACILITIES_TEST, S390_FEAT_AP }, 825 { S390_FEAT_PTFF_QSIE, S390_FEAT_MULTIPLE_EPOCH }, 826 { S390_FEAT_PTFF_QTOUE, S390_FEAT_MULTIPLE_EPOCH }, 827 { S390_FEAT_PTFF_STOE, S390_FEAT_MULTIPLE_EPOCH }, 828 { S390_FEAT_PTFF_STOUE, S390_FEAT_MULTIPLE_EPOCH }, 829 { S390_FEAT_AP_QUEUE_INTERRUPT_CONTROL, S390_FEAT_AP }, 830 }; 831 int i; 832 833 for (i = 0; i < ARRAY_SIZE(dep); i++) { 834 if (test_bit(dep[i][0], model->features) && 835 !test_bit(dep[i][1], model->features)) { 836 warn_report("\'%s\' requires \'%s\'.", 837 s390_feat_def(dep[i][0])->name, 838 s390_feat_def(dep[i][1])->name); 839 } 840 } 841 } 842 843 static void error_prepend_missing_feat(const char *name, void *opaque) 844 { 845 error_prepend((Error **) opaque, "%s ", name); 846 } 847 848 static void check_compatibility(const S390CPUModel *max_model, 849 const S390CPUModel *model, Error **errp) 850 { 851 S390FeatBitmap missing; 852 853 if (model->def->gen > max_model->def->gen) { 854 error_setg(errp, "Selected CPU generation is too new. Maximum " 855 "supported model in the configuration: \'%s\'", 856 max_model->def->name); 857 return; 858 } else if (model->def->gen == max_model->def->gen && 859 model->def->ec_ga > max_model->def->ec_ga) { 860 error_setg(errp, "Selected CPU GA level is too new. Maximum " 861 "supported model in the configuration: \'%s\'", 862 max_model->def->name); 863 return; 864 } 865 866 /* detect the missing features to properly report them */ 867 bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX); 868 if (bitmap_empty(missing, S390_FEAT_MAX)) { 869 return; 870 } 871 872 error_setg(errp, " "); 873 s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat); 874 error_prepend(errp, "Some features requested in the CPU model are not " 875 "available in the configuration: "); 876 } 877 878 static S390CPUModel *get_max_cpu_model(Error **errp) 879 { 880 Error *err = NULL; 881 static S390CPUModel max_model; 882 static bool cached; 883 884 if (cached) { 885 return &max_model; 886 } 887 888 if (kvm_enabled()) { 889 kvm_s390_get_host_cpu_model(&max_model, &err); 890 } else { 891 max_model.def = s390_find_cpu_def(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 892 QEMU_MAX_CPU_EC_GA, NULL); 893 bitmap_copy(max_model.features, qemu_max_cpu_feat, S390_FEAT_MAX); 894 } 895 if (err) { 896 error_propagate(errp, err); 897 return NULL; 898 } 899 cached = true; 900 return &max_model; 901 } 902 903 static inline void apply_cpu_model(const S390CPUModel *model, Error **errp) 904 { 905 #ifndef CONFIG_USER_ONLY 906 Error *err = NULL; 907 static S390CPUModel applied_model; 908 static bool applied; 909 910 /* 911 * We have the same model for all VCPUs. KVM can only be configured before 912 * any VCPUs are defined in KVM. 913 */ 914 if (applied) { 915 if (model && memcmp(&applied_model, model, sizeof(S390CPUModel))) { 916 error_setg(errp, "Mixed CPU models are not supported on s390x."); 917 } 918 return; 919 } 920 921 if (kvm_enabled()) { 922 kvm_s390_apply_cpu_model(model, &err); 923 if (err) { 924 error_propagate(errp, err); 925 return; 926 } 927 } 928 929 applied = true; 930 if (model) { 931 applied_model = *model; 932 } 933 #endif 934 } 935 936 void s390_realize_cpu_model(CPUState *cs, Error **errp) 937 { 938 Error *err = NULL; 939 S390CPUClass *xcc = S390_CPU_GET_CLASS(cs); 940 S390CPU *cpu = S390_CPU(cs); 941 const S390CPUModel *max_model; 942 943 if (xcc->kvm_required && !kvm_enabled()) { 944 error_setg(errp, "CPU definition requires KVM"); 945 return; 946 } 947 948 if (!cpu->model) { 949 /* no host model support -> perform compatibility stuff */ 950 apply_cpu_model(NULL, errp); 951 return; 952 } 953 954 max_model = get_max_cpu_model(errp); 955 if (!max_model) { 956 error_prepend(errp, "CPU models are not available: "); 957 return; 958 } 959 960 /* copy over properties that can vary */ 961 cpu->model->lowest_ibc = max_model->lowest_ibc; 962 cpu->model->cpu_id = max_model->cpu_id; 963 cpu->model->cpu_id_format = max_model->cpu_id_format; 964 cpu->model->cpu_ver = max_model->cpu_ver; 965 966 check_consistency(cpu->model); 967 check_compatibility(max_model, cpu->model, &err); 968 if (err) { 969 error_propagate(errp, err); 970 return; 971 } 972 973 apply_cpu_model(cpu->model, errp); 974 975 #if !defined(CONFIG_USER_ONLY) 976 cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model); 977 if (tcg_enabled()) { 978 /* basic mode, write the cpu address into the first 4 bit of the ID */ 979 cpu->env.cpuid = deposit64(cpu->env.cpuid, 54, 4, cpu->env.core_id); 980 } 981 #endif 982 } 983 984 static void get_feature(Object *obj, Visitor *v, const char *name, 985 void *opaque, Error **errp) 986 { 987 S390Feat feat = (S390Feat) opaque; 988 S390CPU *cpu = S390_CPU(obj); 989 bool value; 990 991 if (!cpu->model) { 992 error_setg(errp, "Details about the host CPU model are not available, " 993 "features cannot be queried."); 994 return; 995 } 996 997 value = test_bit(feat, cpu->model->features); 998 visit_type_bool(v, name, &value, errp); 999 } 1000 1001 static void set_feature(Object *obj, Visitor *v, const char *name, 1002 void *opaque, Error **errp) 1003 { 1004 Error *err = NULL; 1005 S390Feat feat = (S390Feat) opaque; 1006 DeviceState *dev = DEVICE(obj); 1007 S390CPU *cpu = S390_CPU(obj); 1008 bool value; 1009 1010 if (dev->realized) { 1011 error_setg(errp, "Attempt to set property '%s' on '%s' after " 1012 "it was realized", name, object_get_typename(obj)); 1013 return; 1014 } else if (!cpu->model) { 1015 error_setg(errp, "Details about the host CPU model are not available, " 1016 "features cannot be changed."); 1017 return; 1018 } 1019 1020 visit_type_bool(v, name, &value, &err); 1021 if (err) { 1022 error_propagate(errp, err); 1023 return; 1024 } 1025 if (value) { 1026 if (!test_bit(feat, cpu->model->def->full_feat)) { 1027 error_setg(errp, "Feature '%s' is not available for CPU model '%s'," 1028 " it was introduced with later models.", 1029 name, cpu->model->def->name); 1030 return; 1031 } 1032 set_bit(feat, cpu->model->features); 1033 } else { 1034 clear_bit(feat, cpu->model->features); 1035 } 1036 } 1037 1038 static void get_feature_group(Object *obj, Visitor *v, const char *name, 1039 void *opaque, Error **errp) 1040 { 1041 S390FeatGroup group = (S390FeatGroup) opaque; 1042 const S390FeatGroupDef *def = s390_feat_group_def(group); 1043 S390CPU *cpu = S390_CPU(obj); 1044 S390FeatBitmap tmp; 1045 bool value; 1046 1047 if (!cpu->model) { 1048 error_setg(errp, "Details about the host CPU model are not available, " 1049 "features cannot be queried."); 1050 return; 1051 } 1052 1053 /* a group is enabled if all features are enabled */ 1054 bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX); 1055 value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX); 1056 visit_type_bool(v, name, &value, errp); 1057 } 1058 1059 static void set_feature_group(Object *obj, Visitor *v, const char *name, 1060 void *opaque, Error **errp) 1061 { 1062 Error *err = NULL; 1063 S390FeatGroup group = (S390FeatGroup) opaque; 1064 const S390FeatGroupDef *def = s390_feat_group_def(group); 1065 DeviceState *dev = DEVICE(obj); 1066 S390CPU *cpu = S390_CPU(obj); 1067 bool value; 1068 1069 if (dev->realized) { 1070 error_setg(errp, "Attempt to set property '%s' on '%s' after " 1071 "it was realized", name, object_get_typename(obj)); 1072 return; 1073 } else if (!cpu->model) { 1074 error_setg(errp, "Details about the host CPU model are not available, " 1075 "features cannot be changed."); 1076 return; 1077 } 1078 1079 visit_type_bool(v, name, &value, &err); 1080 if (err) { 1081 error_propagate(errp, err); 1082 return; 1083 } 1084 if (value) { 1085 /* groups are added in one shot, so an intersect is sufficient */ 1086 if (!bitmap_intersects(def->feat, cpu->model->def->full_feat, 1087 S390_FEAT_MAX)) { 1088 error_setg(errp, "Group '%s' is not available for CPU model '%s'," 1089 " it was introduced with later models.", 1090 name, cpu->model->def->name); 1091 return; 1092 } 1093 bitmap_or(cpu->model->features, cpu->model->features, def->feat, 1094 S390_FEAT_MAX); 1095 } else { 1096 bitmap_andnot(cpu->model->features, cpu->model->features, def->feat, 1097 S390_FEAT_MAX); 1098 } 1099 } 1100 1101 void s390_cpu_model_register_props(Object *obj) 1102 { 1103 S390FeatGroup group; 1104 S390Feat feat; 1105 1106 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 1107 const S390FeatDef *def = s390_feat_def(feat); 1108 object_property_add(obj, def->name, "bool", get_feature, 1109 set_feature, NULL, (void *) feat, NULL); 1110 object_property_set_description(obj, def->name, def->desc , NULL); 1111 } 1112 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 1113 const S390FeatGroupDef *def = s390_feat_group_def(group); 1114 object_property_add(obj, def->name, "bool", get_feature_group, 1115 set_feature_group, NULL, (void *) group, NULL); 1116 object_property_set_description(obj, def->name, def->desc , NULL); 1117 } 1118 } 1119 1120 static void s390_cpu_model_initfn(Object *obj) 1121 { 1122 S390CPU *cpu = S390_CPU(obj); 1123 S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu); 1124 1125 cpu->model = g_malloc0(sizeof(*cpu->model)); 1126 /* copy the model, so we can modify it */ 1127 cpu->model->def = xcc->cpu_def; 1128 if (xcc->is_static) { 1129 /* base model - features will never change */ 1130 bitmap_copy(cpu->model->features, cpu->model->def->base_feat, 1131 S390_FEAT_MAX); 1132 } else { 1133 /* latest model - features can change */ 1134 bitmap_copy(cpu->model->features, 1135 cpu->model->def->default_feat, S390_FEAT_MAX); 1136 } 1137 } 1138 1139 static S390CPUDef s390_qemu_cpu_def; 1140 static S390CPUModel s390_qemu_cpu_model; 1141 1142 /* Set the qemu CPU model (on machine initialization). Must not be called 1143 * once CPUs have been created. 1144 */ 1145 void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga, 1146 const S390FeatInit feat_init) 1147 { 1148 const S390CPUDef *def = s390_find_cpu_def(type, gen, ec_ga, NULL); 1149 1150 g_assert(def); 1151 g_assert(QTAILQ_EMPTY_RCU(&cpus)); 1152 1153 /* TCG emulates some features that can usually not be enabled with 1154 * the emulated machine generation. Make sure they can be enabled 1155 * when using the QEMU model by adding them to full_feat. We have 1156 * to copy the definition to do that. 1157 */ 1158 memcpy(&s390_qemu_cpu_def, def, sizeof(s390_qemu_cpu_def)); 1159 bitmap_or(s390_qemu_cpu_def.full_feat, s390_qemu_cpu_def.full_feat, 1160 qemu_max_cpu_feat, S390_FEAT_MAX); 1161 1162 /* build the CPU model */ 1163 s390_qemu_cpu_model.def = &s390_qemu_cpu_def; 1164 bitmap_zero(s390_qemu_cpu_model.features, S390_FEAT_MAX); 1165 s390_init_feat_bitmap(feat_init, s390_qemu_cpu_model.features); 1166 } 1167 1168 static void s390_qemu_cpu_model_initfn(Object *obj) 1169 { 1170 S390CPU *cpu = S390_CPU(obj); 1171 1172 cpu->model = g_malloc0(sizeof(*cpu->model)); 1173 /* copy the CPU model so we can modify it */ 1174 memcpy(cpu->model, &s390_qemu_cpu_model, sizeof(*cpu->model)); 1175 } 1176 1177 static void s390_max_cpu_model_initfn(Object *obj) 1178 { 1179 const S390CPUModel *max_model; 1180 S390CPU *cpu = S390_CPU(obj); 1181 Error *local_err = NULL; 1182 1183 if (kvm_enabled() && !kvm_s390_cpu_models_supported()) { 1184 /* "max" and "host" always work, even without CPU model support */ 1185 return; 1186 } 1187 1188 max_model = get_max_cpu_model(&local_err); 1189 if (local_err) { 1190 /* we expect errors only under KVM, when actually querying the kernel */ 1191 g_assert(kvm_enabled()); 1192 error_report_err(local_err); 1193 /* fallback to unsupported CPU models */ 1194 return; 1195 } 1196 1197 cpu->model = g_new(S390CPUModel, 1); 1198 /* copy the CPU model so we can modify it */ 1199 memcpy(cpu->model, max_model, sizeof(*cpu->model)); 1200 } 1201 1202 static void s390_cpu_model_finalize(Object *obj) 1203 { 1204 S390CPU *cpu = S390_CPU(obj); 1205 1206 g_free(cpu->model); 1207 cpu->model = NULL; 1208 } 1209 1210 static bool get_is_migration_safe(Object *obj, Error **errp) 1211 { 1212 return S390_CPU_GET_CLASS(obj)->is_migration_safe; 1213 } 1214 1215 static bool get_is_static(Object *obj, Error **errp) 1216 { 1217 return S390_CPU_GET_CLASS(obj)->is_static; 1218 } 1219 1220 static char *get_description(Object *obj, Error **errp) 1221 { 1222 return g_strdup(S390_CPU_GET_CLASS(obj)->desc); 1223 } 1224 1225 void s390_cpu_model_class_register_props(ObjectClass *oc) 1226 { 1227 object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe, 1228 NULL, NULL); 1229 object_class_property_add_bool(oc, "static", get_is_static, 1230 NULL, NULL); 1231 object_class_property_add_str(oc, "description", get_description, NULL, 1232 NULL); 1233 } 1234 1235 #ifdef CONFIG_KVM 1236 static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data) 1237 { 1238 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1239 1240 xcc->kvm_required = true; 1241 xcc->desc = "KVM only: All recognized features"; 1242 } 1243 #endif 1244 1245 static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data) 1246 { 1247 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1248 1249 /* all base models are migration safe */ 1250 xcc->cpu_def = (const S390CPUDef *) data; 1251 xcc->is_migration_safe = true; 1252 xcc->is_static = true; 1253 xcc->desc = xcc->cpu_def->desc; 1254 } 1255 1256 static void s390_cpu_model_class_init(ObjectClass *oc, void *data) 1257 { 1258 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1259 1260 /* model that can change between QEMU versions */ 1261 xcc->cpu_def = (const S390CPUDef *) data; 1262 xcc->is_migration_safe = true; 1263 xcc->desc = xcc->cpu_def->desc; 1264 } 1265 1266 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data) 1267 { 1268 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1269 1270 xcc->is_migration_safe = true; 1271 xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s", 1272 qemu_hw_version()); 1273 } 1274 1275 static void s390_max_cpu_model_class_init(ObjectClass *oc, void *data) 1276 { 1277 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1278 1279 /* 1280 * The "max" model is neither static nor migration safe. Under KVM 1281 * it represents the "host" model. Under TCG it represents some kind of 1282 * "qemu" CPU model without compat handling and maybe with some additional 1283 * CPU features that are not yet unlocked in the "qemu" model. 1284 */ 1285 xcc->desc = 1286 "Enables all features supported by the accelerator in the current host"; 1287 } 1288 1289 /* Generate type name for a cpu model. Caller has to free the string. */ 1290 static char *s390_cpu_type_name(const char *model_name) 1291 { 1292 return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name); 1293 } 1294 1295 /* Generate type name for a base cpu model. Caller has to free the string. */ 1296 static char *s390_base_cpu_type_name(const char *model_name) 1297 { 1298 return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name); 1299 } 1300 1301 ObjectClass *s390_cpu_class_by_name(const char *name) 1302 { 1303 char *typename = s390_cpu_type_name(name); 1304 ObjectClass *oc; 1305 1306 oc = object_class_by_name(typename); 1307 g_free(typename); 1308 return oc; 1309 } 1310 1311 static const TypeInfo qemu_s390_cpu_type_info = { 1312 .name = S390_CPU_TYPE_NAME("qemu"), 1313 .parent = TYPE_S390_CPU, 1314 .instance_init = s390_qemu_cpu_model_initfn, 1315 .instance_finalize = s390_cpu_model_finalize, 1316 .class_init = s390_qemu_cpu_model_class_init, 1317 }; 1318 1319 static const TypeInfo max_s390_cpu_type_info = { 1320 .name = S390_CPU_TYPE_NAME("max"), 1321 .parent = TYPE_S390_CPU, 1322 .instance_init = s390_max_cpu_model_initfn, 1323 .instance_finalize = s390_cpu_model_finalize, 1324 .class_init = s390_max_cpu_model_class_init, 1325 }; 1326 1327 #ifdef CONFIG_KVM 1328 static const TypeInfo host_s390_cpu_type_info = { 1329 .name = S390_CPU_TYPE_NAME("host"), 1330 .parent = S390_CPU_TYPE_NAME("max"), 1331 .class_init = s390_host_cpu_model_class_init, 1332 }; 1333 #endif 1334 1335 static void init_ignored_base_feat(void) 1336 { 1337 static const int feats[] = { 1338 /* MSA subfunctions that could not be available on certain machines */ 1339 S390_FEAT_KMAC_DEA, 1340 S390_FEAT_KMAC_TDEA_128, 1341 S390_FEAT_KMAC_TDEA_192, 1342 S390_FEAT_KMC_DEA, 1343 S390_FEAT_KMC_TDEA_128, 1344 S390_FEAT_KMC_TDEA_192, 1345 S390_FEAT_KM_DEA, 1346 S390_FEAT_KM_TDEA_128, 1347 S390_FEAT_KM_TDEA_192, 1348 S390_FEAT_KIMD_SHA_1, 1349 S390_FEAT_KLMD_SHA_1, 1350 /* CSSKE is deprecated on newer generations */ 1351 S390_FEAT_CONDITIONAL_SSKE, 1352 }; 1353 int i; 1354 1355 for (i = 0; i < ARRAY_SIZE(feats); i++) { 1356 set_bit(feats[i], ignored_base_feat); 1357 } 1358 } 1359 1360 static void register_types(void) 1361 { 1362 static const S390FeatInit qemu_latest_init = { S390_FEAT_LIST_QEMU_LATEST }; 1363 int i; 1364 1365 init_ignored_base_feat(); 1366 1367 /* init all bitmaps from gnerated data initially */ 1368 s390_init_feat_bitmap(qemu_max_cpu_feat_init, qemu_max_cpu_feat); 1369 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 1370 s390_init_feat_bitmap(s390_cpu_defs[i].base_init, 1371 s390_cpu_defs[i].base_feat); 1372 s390_init_feat_bitmap(s390_cpu_defs[i].default_init, 1373 s390_cpu_defs[i].default_feat); 1374 s390_init_feat_bitmap(s390_cpu_defs[i].full_init, 1375 s390_cpu_defs[i].full_feat); 1376 } 1377 1378 /* initialize the qemu model with latest definition */ 1379 s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 1380 QEMU_MAX_CPU_EC_GA, qemu_latest_init); 1381 1382 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 1383 char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name); 1384 TypeInfo ti_base = { 1385 .name = base_name, 1386 .parent = TYPE_S390_CPU, 1387 .instance_init = s390_cpu_model_initfn, 1388 .instance_finalize = s390_cpu_model_finalize, 1389 .class_init = s390_base_cpu_model_class_init, 1390 .class_data = (void *) &s390_cpu_defs[i], 1391 }; 1392 char *name = s390_cpu_type_name(s390_cpu_defs[i].name); 1393 TypeInfo ti = { 1394 .name = name, 1395 .parent = TYPE_S390_CPU, 1396 .instance_init = s390_cpu_model_initfn, 1397 .instance_finalize = s390_cpu_model_finalize, 1398 .class_init = s390_cpu_model_class_init, 1399 .class_data = (void *) &s390_cpu_defs[i], 1400 }; 1401 1402 type_register_static(&ti_base); 1403 type_register_static(&ti); 1404 g_free(base_name); 1405 g_free(name); 1406 } 1407 1408 type_register_static(&qemu_s390_cpu_type_info); 1409 type_register_static(&max_s390_cpu_type_info); 1410 #ifdef CONFIG_KVM 1411 type_register_static(&host_s390_cpu_type_info); 1412 #endif 1413 } 1414 1415 type_init(register_types) 1416