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 if (!visit_start_struct(visitor, NULL, NULL, 0, &err)) { 514 error_propagate(errp, err); 515 visit_free(visitor); 516 object_unref(obj); 517 return; 518 } 519 for (e = qdict_first(qdict); e; e = qdict_next(qdict, e)) { 520 if (!object_property_set(obj, e->key, visitor, &err)) { 521 break; 522 } 523 } 524 if (!err) { 525 visit_check_struct(visitor, &err); 526 } 527 visit_end_struct(visitor, NULL); 528 visit_free(visitor); 529 if (err) { 530 error_propagate(errp, err); 531 object_unref(obj); 532 return; 533 } 534 } 535 536 /* copy the model and throw the cpu away */ 537 memcpy(model, cpu->model, sizeof(*model)); 538 object_unref(obj); 539 } 540 541 static void qdict_add_disabled_feat(const char *name, void *opaque) 542 { 543 qdict_put_bool(opaque, name, false); 544 } 545 546 static void qdict_add_enabled_feat(const char *name, void *opaque) 547 { 548 qdict_put_bool(opaque, name, true); 549 } 550 551 /* convert S390CPUDef into a static CpuModelInfo */ 552 static void cpu_info_from_model(CpuModelInfo *info, const S390CPUModel *model, 553 bool delta_changes) 554 { 555 QDict *qdict = qdict_new(); 556 S390FeatBitmap bitmap; 557 558 /* always fallback to the static base model */ 559 info->name = g_strdup_printf("%s-base", model->def->name); 560 561 if (delta_changes) { 562 /* features deleted from the base feature set */ 563 bitmap_andnot(bitmap, model->def->base_feat, model->features, 564 S390_FEAT_MAX); 565 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) { 566 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat); 567 } 568 569 /* features added to the base feature set */ 570 bitmap_andnot(bitmap, model->features, model->def->base_feat, 571 S390_FEAT_MAX); 572 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) { 573 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_enabled_feat); 574 } 575 } else { 576 /* expand all features */ 577 s390_feat_bitmap_to_ascii(model->features, qdict, 578 qdict_add_enabled_feat); 579 bitmap_complement(bitmap, model->features, S390_FEAT_MAX); 580 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat); 581 } 582 583 if (!qdict_size(qdict)) { 584 qobject_unref(qdict); 585 } else { 586 info->props = QOBJECT(qdict); 587 info->has_props = true; 588 } 589 } 590 591 CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type, 592 CpuModelInfo *model, 593 Error **errp) 594 { 595 Error *err = NULL; 596 CpuModelExpansionInfo *expansion_info = NULL; 597 S390CPUModel s390_model; 598 bool delta_changes = false; 599 600 /* convert it to our internal representation */ 601 cpu_model_from_info(&s390_model, model, &err); 602 if (err) { 603 error_propagate(errp, err); 604 return NULL; 605 } 606 607 if (type == CPU_MODEL_EXPANSION_TYPE_STATIC) { 608 delta_changes = true; 609 } else if (type != CPU_MODEL_EXPANSION_TYPE_FULL) { 610 error_setg(errp, "The requested expansion type is not supported."); 611 return NULL; 612 } 613 614 /* convert it back to a static representation */ 615 expansion_info = g_new0(CpuModelExpansionInfo, 1); 616 expansion_info->model = g_malloc0(sizeof(*expansion_info->model)); 617 cpu_info_from_model(expansion_info->model, &s390_model, delta_changes); 618 return expansion_info; 619 } 620 621 static void list_add_feat(const char *name, void *opaque) 622 { 623 strList **last = (strList **) opaque; 624 strList *entry; 625 626 entry = g_new0(strList, 1); 627 entry->value = g_strdup(name); 628 entry->next = *last; 629 *last = entry; 630 } 631 632 CpuModelCompareInfo *qmp_query_cpu_model_comparison(CpuModelInfo *infoa, 633 CpuModelInfo *infob, 634 Error **errp) 635 { 636 Error *err = NULL; 637 CpuModelCompareResult feat_result, gen_result; 638 CpuModelCompareInfo *compare_info; 639 S390FeatBitmap missing, added; 640 S390CPUModel modela, modelb; 641 642 /* convert both models to our internal representation */ 643 cpu_model_from_info(&modela, infoa, &err); 644 if (err) { 645 error_propagate(errp, err); 646 return NULL; 647 } 648 cpu_model_from_info(&modelb, infob, &err); 649 if (err) { 650 error_propagate(errp, err); 651 return NULL; 652 } 653 compare_info = g_new0(CpuModelCompareInfo, 1); 654 655 /* check the cpu generation and ga level */ 656 if (modela.def->gen == modelb.def->gen) { 657 if (modela.def->ec_ga == modelb.def->ec_ga) { 658 /* ec and corresponding bc are identical */ 659 gen_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; 660 } else if (modela.def->ec_ga < modelb.def->ec_ga) { 661 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 662 } else { 663 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 664 } 665 } else if (modela.def->gen < modelb.def->gen) { 666 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 667 } else { 668 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 669 } 670 if (gen_result != CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 671 /* both models cannot be made identical */ 672 list_add_feat("type", &compare_info->responsible_properties); 673 } 674 675 /* check the feature set */ 676 if (bitmap_equal(modela.features, modelb.features, S390_FEAT_MAX)) { 677 feat_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; 678 } else { 679 bitmap_andnot(missing, modela.features, modelb.features, S390_FEAT_MAX); 680 s390_feat_bitmap_to_ascii(missing, 681 &compare_info->responsible_properties, 682 list_add_feat); 683 bitmap_andnot(added, modelb.features, modela.features, S390_FEAT_MAX); 684 s390_feat_bitmap_to_ascii(added, &compare_info->responsible_properties, 685 list_add_feat); 686 if (bitmap_empty(missing, S390_FEAT_MAX)) { 687 feat_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 688 } else if (bitmap_empty(added, S390_FEAT_MAX)) { 689 feat_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 690 } else { 691 feat_result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; 692 } 693 } 694 695 /* combine the results */ 696 if (gen_result == feat_result) { 697 compare_info->result = gen_result; 698 } else if (feat_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 699 compare_info->result = gen_result; 700 } else if (gen_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 701 compare_info->result = feat_result; 702 } else { 703 compare_info->result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; 704 } 705 return compare_info; 706 } 707 708 CpuModelBaselineInfo *qmp_query_cpu_model_baseline(CpuModelInfo *infoa, 709 CpuModelInfo *infob, 710 Error **errp) 711 { 712 Error *err = NULL; 713 CpuModelBaselineInfo *baseline_info; 714 S390CPUModel modela, modelb, model; 715 uint16_t cpu_type; 716 uint8_t max_gen_ga; 717 uint8_t max_gen; 718 719 /* convert both models to our internal representation */ 720 cpu_model_from_info(&modela, infoa, &err); 721 if (err) { 722 error_propagate(errp, err); 723 return NULL; 724 } 725 726 cpu_model_from_info(&modelb, infob, &err); 727 if (err) { 728 error_propagate(errp, err); 729 return NULL; 730 } 731 732 /* features both models support */ 733 bitmap_and(model.features, modela.features, modelb.features, S390_FEAT_MAX); 734 735 /* detect the maximum model not regarding features */ 736 if (modela.def->gen == modelb.def->gen) { 737 if (modela.def->type == modelb.def->type) { 738 cpu_type = modela.def->type; 739 } else { 740 cpu_type = 0; 741 } 742 max_gen = modela.def->gen; 743 max_gen_ga = MIN(modela.def->ec_ga, modelb.def->ec_ga); 744 } else if (modela.def->gen > modelb.def->gen) { 745 cpu_type = modelb.def->type; 746 max_gen = modelb.def->gen; 747 max_gen_ga = modelb.def->ec_ga; 748 } else { 749 cpu_type = modela.def->type; 750 max_gen = modela.def->gen; 751 max_gen_ga = modela.def->ec_ga; 752 } 753 754 model.def = s390_find_cpu_def(cpu_type, max_gen, max_gen_ga, 755 model.features); 756 757 /* models without early base features (esan3) are bad */ 758 if (!model.def) { 759 error_setg(errp, "No compatible CPU model could be created as" 760 " important base features are disabled"); 761 return NULL; 762 } 763 764 /* strip off features not part of the max model */ 765 bitmap_and(model.features, model.features, model.def->full_feat, 766 S390_FEAT_MAX); 767 768 baseline_info = g_new0(CpuModelBaselineInfo, 1); 769 baseline_info->model = g_malloc0(sizeof(*baseline_info->model)); 770 cpu_info_from_model(baseline_info->model, &model, true); 771 return baseline_info; 772 } 773 #endif 774 775 static void check_consistency(const S390CPUModel *model) 776 { 777 static int dep[][2] = { 778 { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH }, 779 { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH }, 780 { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH }, 781 { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT }, 782 { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH}, 783 { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT }, 784 { S390_FEAT_DFP_FAST, S390_FEAT_DFP }, 785 { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 }, 786 { S390_FEAT_EDAT_2, S390_FEAT_EDAT}, 787 { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 }, 788 { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 }, 789 { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 }, 790 { S390_FEAT_SIE_CMMA, S390_FEAT_CMM }, 791 { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS }, 792 { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT }, 793 { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 }, 794 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_3 }, 795 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_4 }, 796 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 797 { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR }, 798 { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR }, 799 { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 800 { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP }, 801 { S390_FEAT_CMM_NT, S390_FEAT_CMM }, 802 { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 803 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST }, 804 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 805 { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 }, 806 { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA }, 807 { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA }, 808 { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA }, 809 { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA }, 810 { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA }, 811 { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA }, 812 { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA }, 813 { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA }, 814 { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA }, 815 { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA }, 816 { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA }, 817 { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA }, 818 { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 }, 819 { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 }, 820 { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 }, 821 { S390_FEAT_AP_QUERY_CONFIG_INFO, S390_FEAT_AP }, 822 { S390_FEAT_AP_FACILITIES_TEST, S390_FEAT_AP }, 823 { S390_FEAT_PTFF_QSIE, S390_FEAT_MULTIPLE_EPOCH }, 824 { S390_FEAT_PTFF_QTOUE, S390_FEAT_MULTIPLE_EPOCH }, 825 { S390_FEAT_PTFF_STOE, S390_FEAT_MULTIPLE_EPOCH }, 826 { S390_FEAT_PTFF_STOUE, S390_FEAT_MULTIPLE_EPOCH }, 827 { S390_FEAT_AP_QUEUE_INTERRUPT_CONTROL, S390_FEAT_AP }, 828 }; 829 int i; 830 831 for (i = 0; i < ARRAY_SIZE(dep); i++) { 832 if (test_bit(dep[i][0], model->features) && 833 !test_bit(dep[i][1], model->features)) { 834 warn_report("\'%s\' requires \'%s\'.", 835 s390_feat_def(dep[i][0])->name, 836 s390_feat_def(dep[i][1])->name); 837 } 838 } 839 } 840 841 static void error_prepend_missing_feat(const char *name, void *opaque) 842 { 843 error_prepend((Error **) opaque, "%s ", name); 844 } 845 846 static void check_compatibility(const S390CPUModel *max_model, 847 const S390CPUModel *model, Error **errp) 848 { 849 S390FeatBitmap missing; 850 851 if (model->def->gen > max_model->def->gen) { 852 error_setg(errp, "Selected CPU generation is too new. Maximum " 853 "supported model in the configuration: \'%s\'", 854 max_model->def->name); 855 return; 856 } else if (model->def->gen == max_model->def->gen && 857 model->def->ec_ga > max_model->def->ec_ga) { 858 error_setg(errp, "Selected CPU GA level is too new. Maximum " 859 "supported model in the configuration: \'%s\'", 860 max_model->def->name); 861 return; 862 } 863 864 /* detect the missing features to properly report them */ 865 bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX); 866 if (bitmap_empty(missing, S390_FEAT_MAX)) { 867 return; 868 } 869 870 error_setg(errp, " "); 871 s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat); 872 error_prepend(errp, "Some features requested in the CPU model are not " 873 "available in the configuration: "); 874 } 875 876 static S390CPUModel *get_max_cpu_model(Error **errp) 877 { 878 Error *err = NULL; 879 static S390CPUModel max_model; 880 static bool cached; 881 882 if (cached) { 883 return &max_model; 884 } 885 886 if (kvm_enabled()) { 887 kvm_s390_get_host_cpu_model(&max_model, &err); 888 } else { 889 max_model.def = s390_find_cpu_def(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 890 QEMU_MAX_CPU_EC_GA, NULL); 891 bitmap_copy(max_model.features, qemu_max_cpu_feat, S390_FEAT_MAX); 892 } 893 if (err) { 894 error_propagate(errp, err); 895 return NULL; 896 } 897 cached = true; 898 return &max_model; 899 } 900 901 static inline void apply_cpu_model(const S390CPUModel *model, Error **errp) 902 { 903 #ifndef CONFIG_USER_ONLY 904 Error *err = NULL; 905 static S390CPUModel applied_model; 906 static bool applied; 907 908 /* 909 * We have the same model for all VCPUs. KVM can only be configured before 910 * any VCPUs are defined in KVM. 911 */ 912 if (applied) { 913 if (model && memcmp(&applied_model, model, sizeof(S390CPUModel))) { 914 error_setg(errp, "Mixed CPU models are not supported on s390x."); 915 } 916 return; 917 } 918 919 if (kvm_enabled()) { 920 kvm_s390_apply_cpu_model(model, &err); 921 if (err) { 922 error_propagate(errp, err); 923 return; 924 } 925 } 926 927 applied = true; 928 if (model) { 929 applied_model = *model; 930 } 931 #endif 932 } 933 934 void s390_realize_cpu_model(CPUState *cs, Error **errp) 935 { 936 Error *err = NULL; 937 S390CPUClass *xcc = S390_CPU_GET_CLASS(cs); 938 S390CPU *cpu = S390_CPU(cs); 939 const S390CPUModel *max_model; 940 941 if (xcc->kvm_required && !kvm_enabled()) { 942 error_setg(errp, "CPU definition requires KVM"); 943 return; 944 } 945 946 if (!cpu->model) { 947 /* no host model support -> perform compatibility stuff */ 948 apply_cpu_model(NULL, errp); 949 return; 950 } 951 952 max_model = get_max_cpu_model(errp); 953 if (!max_model) { 954 error_prepend(errp, "CPU models are not available: "); 955 return; 956 } 957 958 /* copy over properties that can vary */ 959 cpu->model->lowest_ibc = max_model->lowest_ibc; 960 cpu->model->cpu_id = max_model->cpu_id; 961 cpu->model->cpu_id_format = max_model->cpu_id_format; 962 cpu->model->cpu_ver = max_model->cpu_ver; 963 964 check_consistency(cpu->model); 965 check_compatibility(max_model, cpu->model, &err); 966 if (err) { 967 error_propagate(errp, err); 968 return; 969 } 970 971 apply_cpu_model(cpu->model, errp); 972 973 #if !defined(CONFIG_USER_ONLY) 974 cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model); 975 if (tcg_enabled()) { 976 /* basic mode, write the cpu address into the first 4 bit of the ID */ 977 cpu->env.cpuid = deposit64(cpu->env.cpuid, 54, 4, cpu->env.core_id); 978 } 979 #endif 980 } 981 982 static void get_feature(Object *obj, Visitor *v, const char *name, 983 void *opaque, Error **errp) 984 { 985 S390Feat feat = (S390Feat) opaque; 986 S390CPU *cpu = S390_CPU(obj); 987 bool value; 988 989 if (!cpu->model) { 990 error_setg(errp, "Details about the host CPU model are not available, " 991 "features cannot be queried."); 992 return; 993 } 994 995 value = test_bit(feat, cpu->model->features); 996 visit_type_bool(v, name, &value, errp); 997 } 998 999 static void set_feature(Object *obj, Visitor *v, const char *name, 1000 void *opaque, Error **errp) 1001 { 1002 Error *err = NULL; 1003 S390Feat feat = (S390Feat) opaque; 1004 DeviceState *dev = DEVICE(obj); 1005 S390CPU *cpu = S390_CPU(obj); 1006 bool value; 1007 1008 if (dev->realized) { 1009 error_setg(errp, "Attempt to set property '%s' on '%s' after " 1010 "it was realized", name, object_get_typename(obj)); 1011 return; 1012 } else if (!cpu->model) { 1013 error_setg(errp, "Details about the host CPU model are not available, " 1014 "features cannot be changed."); 1015 return; 1016 } 1017 1018 if (!visit_type_bool(v, name, &value, &err)) { 1019 error_propagate(errp, err); 1020 return; 1021 } 1022 if (value) { 1023 if (!test_bit(feat, cpu->model->def->full_feat)) { 1024 error_setg(errp, "Feature '%s' is not available for CPU model '%s'," 1025 " it was introduced with later models.", 1026 name, cpu->model->def->name); 1027 return; 1028 } 1029 set_bit(feat, cpu->model->features); 1030 } else { 1031 clear_bit(feat, cpu->model->features); 1032 } 1033 } 1034 1035 static void get_feature_group(Object *obj, Visitor *v, const char *name, 1036 void *opaque, Error **errp) 1037 { 1038 S390FeatGroup group = (S390FeatGroup) opaque; 1039 const S390FeatGroupDef *def = s390_feat_group_def(group); 1040 S390CPU *cpu = S390_CPU(obj); 1041 S390FeatBitmap tmp; 1042 bool value; 1043 1044 if (!cpu->model) { 1045 error_setg(errp, "Details about the host CPU model are not available, " 1046 "features cannot be queried."); 1047 return; 1048 } 1049 1050 /* a group is enabled if all features are enabled */ 1051 bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX); 1052 value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX); 1053 visit_type_bool(v, name, &value, errp); 1054 } 1055 1056 static void set_feature_group(Object *obj, Visitor *v, const char *name, 1057 void *opaque, Error **errp) 1058 { 1059 Error *err = NULL; 1060 S390FeatGroup group = (S390FeatGroup) opaque; 1061 const S390FeatGroupDef *def = s390_feat_group_def(group); 1062 DeviceState *dev = DEVICE(obj); 1063 S390CPU *cpu = S390_CPU(obj); 1064 bool value; 1065 1066 if (dev->realized) { 1067 error_setg(errp, "Attempt to set property '%s' on '%s' after " 1068 "it was realized", name, object_get_typename(obj)); 1069 return; 1070 } else if (!cpu->model) { 1071 error_setg(errp, "Details about the host CPU model are not available, " 1072 "features cannot be changed."); 1073 return; 1074 } 1075 1076 if (!visit_type_bool(v, name, &value, &err)) { 1077 error_propagate(errp, err); 1078 return; 1079 } 1080 if (value) { 1081 /* groups are added in one shot, so an intersect is sufficient */ 1082 if (!bitmap_intersects(def->feat, cpu->model->def->full_feat, 1083 S390_FEAT_MAX)) { 1084 error_setg(errp, "Group '%s' is not available for CPU model '%s'," 1085 " it was introduced with later models.", 1086 name, cpu->model->def->name); 1087 return; 1088 } 1089 bitmap_or(cpu->model->features, cpu->model->features, def->feat, 1090 S390_FEAT_MAX); 1091 } else { 1092 bitmap_andnot(cpu->model->features, cpu->model->features, def->feat, 1093 S390_FEAT_MAX); 1094 } 1095 } 1096 1097 void s390_cpu_model_register_props(Object *obj) 1098 { 1099 S390FeatGroup group; 1100 S390Feat feat; 1101 1102 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 1103 const S390FeatDef *def = s390_feat_def(feat); 1104 object_property_add(obj, def->name, "bool", get_feature, 1105 set_feature, NULL, (void *) feat); 1106 object_property_set_description(obj, def->name, def->desc); 1107 } 1108 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 1109 const S390FeatGroupDef *def = s390_feat_group_def(group); 1110 object_property_add(obj, def->name, "bool", get_feature_group, 1111 set_feature_group, NULL, (void *) group); 1112 object_property_set_description(obj, def->name, def->desc); 1113 } 1114 } 1115 1116 static void s390_cpu_model_initfn(Object *obj) 1117 { 1118 S390CPU *cpu = S390_CPU(obj); 1119 S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu); 1120 1121 cpu->model = g_malloc0(sizeof(*cpu->model)); 1122 /* copy the model, so we can modify it */ 1123 cpu->model->def = xcc->cpu_def; 1124 if (xcc->is_static) { 1125 /* base model - features will never change */ 1126 bitmap_copy(cpu->model->features, cpu->model->def->base_feat, 1127 S390_FEAT_MAX); 1128 } else { 1129 /* latest model - features can change */ 1130 bitmap_copy(cpu->model->features, 1131 cpu->model->def->default_feat, S390_FEAT_MAX); 1132 } 1133 } 1134 1135 static S390CPUDef s390_qemu_cpu_def; 1136 static S390CPUModel s390_qemu_cpu_model; 1137 1138 /* Set the qemu CPU model (on machine initialization). Must not be called 1139 * once CPUs have been created. 1140 */ 1141 void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga, 1142 const S390FeatInit feat_init) 1143 { 1144 const S390CPUDef *def = s390_find_cpu_def(type, gen, ec_ga, NULL); 1145 1146 g_assert(def); 1147 g_assert(QTAILQ_EMPTY_RCU(&cpus)); 1148 1149 /* TCG emulates some features that can usually not be enabled with 1150 * the emulated machine generation. Make sure they can be enabled 1151 * when using the QEMU model by adding them to full_feat. We have 1152 * to copy the definition to do that. 1153 */ 1154 memcpy(&s390_qemu_cpu_def, def, sizeof(s390_qemu_cpu_def)); 1155 bitmap_or(s390_qemu_cpu_def.full_feat, s390_qemu_cpu_def.full_feat, 1156 qemu_max_cpu_feat, S390_FEAT_MAX); 1157 1158 /* build the CPU model */ 1159 s390_qemu_cpu_model.def = &s390_qemu_cpu_def; 1160 bitmap_zero(s390_qemu_cpu_model.features, S390_FEAT_MAX); 1161 s390_init_feat_bitmap(feat_init, s390_qemu_cpu_model.features); 1162 } 1163 1164 static void s390_qemu_cpu_model_initfn(Object *obj) 1165 { 1166 S390CPU *cpu = S390_CPU(obj); 1167 1168 cpu->model = g_malloc0(sizeof(*cpu->model)); 1169 /* copy the CPU model so we can modify it */ 1170 memcpy(cpu->model, &s390_qemu_cpu_model, sizeof(*cpu->model)); 1171 } 1172 1173 static void s390_max_cpu_model_initfn(Object *obj) 1174 { 1175 const S390CPUModel *max_model; 1176 S390CPU *cpu = S390_CPU(obj); 1177 Error *local_err = NULL; 1178 1179 if (kvm_enabled() && !kvm_s390_cpu_models_supported()) { 1180 /* "max" and "host" always work, even without CPU model support */ 1181 return; 1182 } 1183 1184 max_model = get_max_cpu_model(&local_err); 1185 if (local_err) { 1186 /* we expect errors only under KVM, when actually querying the kernel */ 1187 g_assert(kvm_enabled()); 1188 error_report_err(local_err); 1189 /* fallback to unsupported CPU models */ 1190 return; 1191 } 1192 1193 cpu->model = g_new(S390CPUModel, 1); 1194 /* copy the CPU model so we can modify it */ 1195 memcpy(cpu->model, max_model, sizeof(*cpu->model)); 1196 } 1197 1198 static void s390_cpu_model_finalize(Object *obj) 1199 { 1200 S390CPU *cpu = S390_CPU(obj); 1201 1202 g_free(cpu->model); 1203 cpu->model = NULL; 1204 } 1205 1206 static bool get_is_migration_safe(Object *obj, Error **errp) 1207 { 1208 return S390_CPU_GET_CLASS(obj)->is_migration_safe; 1209 } 1210 1211 static bool get_is_static(Object *obj, Error **errp) 1212 { 1213 return S390_CPU_GET_CLASS(obj)->is_static; 1214 } 1215 1216 static char *get_description(Object *obj, Error **errp) 1217 { 1218 return g_strdup(S390_CPU_GET_CLASS(obj)->desc); 1219 } 1220 1221 void s390_cpu_model_class_register_props(ObjectClass *oc) 1222 { 1223 object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe, 1224 NULL); 1225 object_class_property_add_bool(oc, "static", get_is_static, 1226 NULL); 1227 object_class_property_add_str(oc, "description", get_description, NULL); 1228 } 1229 1230 #ifdef CONFIG_KVM 1231 static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data) 1232 { 1233 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1234 1235 xcc->kvm_required = true; 1236 xcc->desc = "KVM only: All recognized features"; 1237 } 1238 #endif 1239 1240 static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data) 1241 { 1242 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1243 1244 /* all base models are migration safe */ 1245 xcc->cpu_def = (const S390CPUDef *) data; 1246 xcc->is_migration_safe = true; 1247 xcc->is_static = true; 1248 xcc->desc = xcc->cpu_def->desc; 1249 } 1250 1251 static void s390_cpu_model_class_init(ObjectClass *oc, void *data) 1252 { 1253 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1254 1255 /* model that can change between QEMU versions */ 1256 xcc->cpu_def = (const S390CPUDef *) data; 1257 xcc->is_migration_safe = true; 1258 xcc->desc = xcc->cpu_def->desc; 1259 } 1260 1261 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data) 1262 { 1263 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1264 1265 xcc->is_migration_safe = true; 1266 xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s", 1267 qemu_hw_version()); 1268 } 1269 1270 static void s390_max_cpu_model_class_init(ObjectClass *oc, void *data) 1271 { 1272 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1273 1274 /* 1275 * The "max" model is neither static nor migration safe. Under KVM 1276 * it represents the "host" model. Under TCG it represents some kind of 1277 * "qemu" CPU model without compat handling and maybe with some additional 1278 * CPU features that are not yet unlocked in the "qemu" model. 1279 */ 1280 xcc->desc = 1281 "Enables all features supported by the accelerator in the current host"; 1282 } 1283 1284 /* Generate type name for a cpu model. Caller has to free the string. */ 1285 static char *s390_cpu_type_name(const char *model_name) 1286 { 1287 return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name); 1288 } 1289 1290 /* Generate type name for a base cpu model. Caller has to free the string. */ 1291 static char *s390_base_cpu_type_name(const char *model_name) 1292 { 1293 return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name); 1294 } 1295 1296 ObjectClass *s390_cpu_class_by_name(const char *name) 1297 { 1298 char *typename = s390_cpu_type_name(name); 1299 ObjectClass *oc; 1300 1301 oc = object_class_by_name(typename); 1302 g_free(typename); 1303 return oc; 1304 } 1305 1306 static const TypeInfo qemu_s390_cpu_type_info = { 1307 .name = S390_CPU_TYPE_NAME("qemu"), 1308 .parent = TYPE_S390_CPU, 1309 .instance_init = s390_qemu_cpu_model_initfn, 1310 .instance_finalize = s390_cpu_model_finalize, 1311 .class_init = s390_qemu_cpu_model_class_init, 1312 }; 1313 1314 static const TypeInfo max_s390_cpu_type_info = { 1315 .name = S390_CPU_TYPE_NAME("max"), 1316 .parent = TYPE_S390_CPU, 1317 .instance_init = s390_max_cpu_model_initfn, 1318 .instance_finalize = s390_cpu_model_finalize, 1319 .class_init = s390_max_cpu_model_class_init, 1320 }; 1321 1322 #ifdef CONFIG_KVM 1323 static const TypeInfo host_s390_cpu_type_info = { 1324 .name = S390_CPU_TYPE_NAME("host"), 1325 .parent = S390_CPU_TYPE_NAME("max"), 1326 .class_init = s390_host_cpu_model_class_init, 1327 }; 1328 #endif 1329 1330 static void init_ignored_base_feat(void) 1331 { 1332 static const int feats[] = { 1333 /* MSA subfunctions that could not be available on certain machines */ 1334 S390_FEAT_KMAC_DEA, 1335 S390_FEAT_KMAC_TDEA_128, 1336 S390_FEAT_KMAC_TDEA_192, 1337 S390_FEAT_KMC_DEA, 1338 S390_FEAT_KMC_TDEA_128, 1339 S390_FEAT_KMC_TDEA_192, 1340 S390_FEAT_KM_DEA, 1341 S390_FEAT_KM_TDEA_128, 1342 S390_FEAT_KM_TDEA_192, 1343 S390_FEAT_KIMD_SHA_1, 1344 S390_FEAT_KLMD_SHA_1, 1345 /* CSSKE is deprecated on newer generations */ 1346 S390_FEAT_CONDITIONAL_SSKE, 1347 }; 1348 int i; 1349 1350 for (i = 0; i < ARRAY_SIZE(feats); i++) { 1351 set_bit(feats[i], ignored_base_feat); 1352 } 1353 } 1354 1355 static void register_types(void) 1356 { 1357 static const S390FeatInit qemu_latest_init = { S390_FEAT_LIST_QEMU_LATEST }; 1358 int i; 1359 1360 init_ignored_base_feat(); 1361 1362 /* init all bitmaps from gnerated data initially */ 1363 s390_init_feat_bitmap(qemu_max_cpu_feat_init, qemu_max_cpu_feat); 1364 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 1365 s390_init_feat_bitmap(s390_cpu_defs[i].base_init, 1366 s390_cpu_defs[i].base_feat); 1367 s390_init_feat_bitmap(s390_cpu_defs[i].default_init, 1368 s390_cpu_defs[i].default_feat); 1369 s390_init_feat_bitmap(s390_cpu_defs[i].full_init, 1370 s390_cpu_defs[i].full_feat); 1371 } 1372 1373 /* initialize the qemu model with latest definition */ 1374 s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 1375 QEMU_MAX_CPU_EC_GA, qemu_latest_init); 1376 1377 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 1378 char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name); 1379 TypeInfo ti_base = { 1380 .name = base_name, 1381 .parent = TYPE_S390_CPU, 1382 .instance_init = s390_cpu_model_initfn, 1383 .instance_finalize = s390_cpu_model_finalize, 1384 .class_init = s390_base_cpu_model_class_init, 1385 .class_data = (void *) &s390_cpu_defs[i], 1386 }; 1387 char *name = s390_cpu_type_name(s390_cpu_defs[i].name); 1388 TypeInfo ti = { 1389 .name = name, 1390 .parent = TYPE_S390_CPU, 1391 .instance_init = s390_cpu_model_initfn, 1392 .instance_finalize = s390_cpu_model_finalize, 1393 .class_init = s390_cpu_model_class_init, 1394 .class_data = (void *) &s390_cpu_defs[i], 1395 }; 1396 1397 type_register_static(&ti_base); 1398 type_register_static(&ti); 1399 g_free(base_name); 1400 g_free(name); 1401 } 1402 1403 type_register_static(&qemu_s390_cpu_type_info); 1404 type_register_static(&max_s390_cpu_type_info); 1405 #ifdef CONFIG_KVM 1406 type_register_static(&host_s390_cpu_type_info); 1407 #endif 1408 } 1409 1410 type_init(register_types) 1411