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(object_class_get_name(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(errp); 466 if (*errp) { 467 error_free(*errp); 468 *errp = NULL; 469 } 470 471 object_class_foreach(create_cpu_model_list, TYPE_S390_CPU, false, 472 &list_data); 473 474 return list_data.list; 475 } 476 477 static void cpu_model_from_info(S390CPUModel *model, const CpuModelInfo *info, 478 Error **errp) 479 { 480 const QDict *qdict = NULL; 481 const QDictEntry *e; 482 Visitor *visitor; 483 ObjectClass *oc; 484 S390CPU *cpu; 485 Object *obj; 486 487 if (info->props) { 488 qdict = qobject_to(QDict, info->props); 489 if (!qdict) { 490 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict"); 491 return; 492 } 493 } 494 495 oc = cpu_class_by_name(TYPE_S390_CPU, info->name); 496 if (!oc) { 497 error_setg(errp, "The CPU definition \'%s\' is unknown.", info->name); 498 return; 499 } 500 if (S390_CPU_CLASS(oc)->kvm_required && !kvm_enabled()) { 501 error_setg(errp, "The CPU definition '%s' requires KVM", info->name); 502 return; 503 } 504 obj = object_new(object_class_get_name(oc)); 505 cpu = S390_CPU(obj); 506 507 if (!cpu->model) { 508 error_setg(errp, "Details about the host CPU model are not available, " 509 "it cannot be used."); 510 object_unref(obj); 511 return; 512 } 513 514 if (qdict) { 515 visitor = qobject_input_visitor_new(info->props); 516 visit_start_struct(visitor, NULL, NULL, 0, errp); 517 if (*errp) { 518 visit_free(visitor); 519 object_unref(obj); 520 return; 521 } 522 for (e = qdict_first(qdict); e; e = qdict_next(qdict, e)) { 523 object_property_set(obj, visitor, e->key, errp); 524 if (*errp) { 525 break; 526 } 527 } 528 if (!*errp) { 529 visit_check_struct(visitor, errp); 530 } 531 visit_end_struct(visitor, NULL); 532 visit_free(visitor); 533 if (*errp) { 534 object_unref(obj); 535 return; 536 } 537 } 538 539 /* copy the model and throw the cpu away */ 540 memcpy(model, cpu->model, sizeof(*model)); 541 object_unref(obj); 542 } 543 544 static void qdict_add_disabled_feat(const char *name, void *opaque) 545 { 546 qdict_put_bool(opaque, name, false); 547 } 548 549 static void qdict_add_enabled_feat(const char *name, void *opaque) 550 { 551 qdict_put_bool(opaque, name, true); 552 } 553 554 /* convert S390CPUDef into a static CpuModelInfo */ 555 static void cpu_info_from_model(CpuModelInfo *info, const S390CPUModel *model, 556 bool delta_changes) 557 { 558 QDict *qdict = qdict_new(); 559 S390FeatBitmap bitmap; 560 561 /* always fallback to the static base model */ 562 info->name = g_strdup_printf("%s-base", model->def->name); 563 564 if (delta_changes) { 565 /* features deleted from the base feature set */ 566 bitmap_andnot(bitmap, model->def->base_feat, model->features, 567 S390_FEAT_MAX); 568 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) { 569 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat); 570 } 571 572 /* features added to the base feature set */ 573 bitmap_andnot(bitmap, model->features, model->def->base_feat, 574 S390_FEAT_MAX); 575 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) { 576 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_enabled_feat); 577 } 578 } else { 579 /* expand all features */ 580 s390_feat_bitmap_to_ascii(model->features, qdict, 581 qdict_add_enabled_feat); 582 bitmap_complement(bitmap, model->features, S390_FEAT_MAX); 583 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat); 584 } 585 586 if (!qdict_size(qdict)) { 587 qobject_unref(qdict); 588 } else { 589 info->props = QOBJECT(qdict); 590 info->has_props = true; 591 } 592 } 593 594 CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type, 595 CpuModelInfo *model, 596 Error **errp) 597 { 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, errp); 604 if (*errp) { 605 return NULL; 606 } 607 608 if (type == CPU_MODEL_EXPANSION_TYPE_STATIC) { 609 delta_changes = true; 610 } else if (type != CPU_MODEL_EXPANSION_TYPE_FULL) { 611 error_setg(errp, "The requested expansion type is not supported."); 612 return NULL; 613 } 614 615 /* convert it back to a static representation */ 616 expansion_info = g_new0(CpuModelExpansionInfo, 1); 617 expansion_info->model = g_malloc0(sizeof(*expansion_info->model)); 618 cpu_info_from_model(expansion_info->model, &s390_model, delta_changes); 619 return expansion_info; 620 } 621 622 static void list_add_feat(const char *name, void *opaque) 623 { 624 strList **last = (strList **) opaque; 625 strList *entry; 626 627 entry = g_new0(strList, 1); 628 entry->value = g_strdup(name); 629 entry->next = *last; 630 *last = entry; 631 } 632 633 CpuModelCompareInfo *qmp_query_cpu_model_comparison(CpuModelInfo *infoa, 634 CpuModelInfo *infob, 635 Error **errp) 636 { 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, errp); 644 if (*errp) { 645 return NULL; 646 } 647 cpu_model_from_info(&modelb, infob, errp); 648 if (*errp) { 649 return NULL; 650 } 651 compare_info = g_new0(CpuModelCompareInfo, 1); 652 653 /* check the cpu generation and ga level */ 654 if (modela.def->gen == modelb.def->gen) { 655 if (modela.def->ec_ga == modelb.def->ec_ga) { 656 /* ec and corresponding bc are identical */ 657 gen_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; 658 } else if (modela.def->ec_ga < modelb.def->ec_ga) { 659 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 660 } else { 661 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 662 } 663 } else if (modela.def->gen < modelb.def->gen) { 664 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 665 } else { 666 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 667 } 668 if (gen_result != CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 669 /* both models cannot be made identical */ 670 list_add_feat("type", &compare_info->responsible_properties); 671 } 672 673 /* check the feature set */ 674 if (bitmap_equal(modela.features, modelb.features, S390_FEAT_MAX)) { 675 feat_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; 676 } else { 677 bitmap_andnot(missing, modela.features, modelb.features, S390_FEAT_MAX); 678 s390_feat_bitmap_to_ascii(missing, 679 &compare_info->responsible_properties, 680 list_add_feat); 681 bitmap_andnot(added, modelb.features, modela.features, S390_FEAT_MAX); 682 s390_feat_bitmap_to_ascii(added, &compare_info->responsible_properties, 683 list_add_feat); 684 if (bitmap_empty(missing, S390_FEAT_MAX)) { 685 feat_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 686 } else if (bitmap_empty(added, S390_FEAT_MAX)) { 687 feat_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 688 } else { 689 feat_result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; 690 } 691 } 692 693 /* combine the results */ 694 if (gen_result == feat_result) { 695 compare_info->result = gen_result; 696 } else if (feat_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 697 compare_info->result = gen_result; 698 } else if (gen_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 699 compare_info->result = feat_result; 700 } else { 701 compare_info->result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; 702 } 703 return compare_info; 704 } 705 706 CpuModelBaselineInfo *qmp_query_cpu_model_baseline(CpuModelInfo *infoa, 707 CpuModelInfo *infob, 708 Error **errp) 709 { 710 CpuModelBaselineInfo *baseline_info; 711 S390CPUModel modela, modelb, model; 712 uint16_t cpu_type; 713 uint8_t max_gen_ga; 714 uint8_t max_gen; 715 716 /* convert both models to our internal representation */ 717 cpu_model_from_info(&modela, infoa, errp); 718 if (*errp) { 719 return NULL; 720 } 721 722 cpu_model_from_info(&modelb, infob, errp); 723 if (*errp) { 724 return NULL; 725 } 726 727 /* features both models support */ 728 bitmap_and(model.features, modela.features, modelb.features, S390_FEAT_MAX); 729 730 /* detect the maximum model not regarding features */ 731 if (modela.def->gen == modelb.def->gen) { 732 if (modela.def->type == modelb.def->type) { 733 cpu_type = modela.def->type; 734 } else { 735 cpu_type = 0; 736 } 737 max_gen = modela.def->gen; 738 max_gen_ga = MIN(modela.def->ec_ga, modelb.def->ec_ga); 739 } else if (modela.def->gen > modelb.def->gen) { 740 cpu_type = modelb.def->type; 741 max_gen = modelb.def->gen; 742 max_gen_ga = modelb.def->ec_ga; 743 } else { 744 cpu_type = modela.def->type; 745 max_gen = modela.def->gen; 746 max_gen_ga = modela.def->ec_ga; 747 } 748 749 model.def = s390_find_cpu_def(cpu_type, max_gen, max_gen_ga, 750 model.features); 751 752 /* models without early base features (esan3) are bad */ 753 if (!model.def) { 754 error_setg(errp, "No compatible CPU model could be created as" 755 " important base features are disabled"); 756 return NULL; 757 } 758 759 /* strip off features not part of the max model */ 760 bitmap_and(model.features, model.features, model.def->full_feat, 761 S390_FEAT_MAX); 762 763 baseline_info = g_new0(CpuModelBaselineInfo, 1); 764 baseline_info->model = g_malloc0(sizeof(*baseline_info->model)); 765 cpu_info_from_model(baseline_info->model, &model, true); 766 return baseline_info; 767 } 768 #endif 769 770 static void check_consistency(const S390CPUModel *model) 771 { 772 static int dep[][2] = { 773 { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH }, 774 { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH }, 775 { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH }, 776 { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT }, 777 { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH}, 778 { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT }, 779 { S390_FEAT_DFP_FAST, S390_FEAT_DFP }, 780 { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 }, 781 { S390_FEAT_EDAT_2, S390_FEAT_EDAT}, 782 { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 }, 783 { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 }, 784 { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 }, 785 { S390_FEAT_SIE_CMMA, S390_FEAT_CMM }, 786 { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS }, 787 { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT }, 788 { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 }, 789 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_3 }, 790 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_4 }, 791 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 792 { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR }, 793 { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR }, 794 { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 795 { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP }, 796 { S390_FEAT_CMM_NT, S390_FEAT_CMM }, 797 { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 798 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST }, 799 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 800 { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 }, 801 { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA }, 802 { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA }, 803 { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA }, 804 { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA }, 805 { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA }, 806 { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA }, 807 { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA }, 808 { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA }, 809 { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA }, 810 { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA }, 811 { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA }, 812 { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA }, 813 { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 }, 814 { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 }, 815 { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 }, 816 { S390_FEAT_AP_QUERY_CONFIG_INFO, S390_FEAT_AP }, 817 { S390_FEAT_AP_FACILITIES_TEST, S390_FEAT_AP }, 818 { S390_FEAT_PTFF_QSIE, S390_FEAT_MULTIPLE_EPOCH }, 819 { S390_FEAT_PTFF_QTOUE, S390_FEAT_MULTIPLE_EPOCH }, 820 { S390_FEAT_PTFF_STOE, S390_FEAT_MULTIPLE_EPOCH }, 821 { S390_FEAT_PTFF_STOUE, S390_FEAT_MULTIPLE_EPOCH }, 822 { S390_FEAT_AP_QUEUE_INTERRUPT_CONTROL, S390_FEAT_AP }, 823 }; 824 int i; 825 826 for (i = 0; i < ARRAY_SIZE(dep); i++) { 827 if (test_bit(dep[i][0], model->features) && 828 !test_bit(dep[i][1], model->features)) { 829 warn_report("\'%s\' requires \'%s\'.", 830 s390_feat_def(dep[i][0])->name, 831 s390_feat_def(dep[i][1])->name); 832 } 833 } 834 } 835 836 static void error_prepend_missing_feat(const char *name, void *opaque) 837 { 838 error_prepend((Error **) opaque, "%s ", name); 839 } 840 841 static void check_compatibility(const S390CPUModel *max_model, 842 const S390CPUModel *model, Error **errp) 843 { 844 S390FeatBitmap missing; 845 846 if (model->def->gen > max_model->def->gen) { 847 error_setg(errp, "Selected CPU generation is too new. Maximum " 848 "supported model in the configuration: \'%s\'", 849 max_model->def->name); 850 return; 851 } else if (model->def->gen == max_model->def->gen && 852 model->def->ec_ga > max_model->def->ec_ga) { 853 error_setg(errp, "Selected CPU GA level is too new. Maximum " 854 "supported model in the configuration: \'%s\'", 855 max_model->def->name); 856 return; 857 } 858 859 /* detect the missing features to properly report them */ 860 bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX); 861 if (bitmap_empty(missing, S390_FEAT_MAX)) { 862 return; 863 } 864 865 error_setg(errp, " "); 866 s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat); 867 error_prepend(errp, "Some features requested in the CPU model are not " 868 "available in the configuration: "); 869 } 870 871 static S390CPUModel *get_max_cpu_model(Error **errp) 872 { 873 static S390CPUModel max_model; 874 static bool cached; 875 876 if (cached) { 877 return &max_model; 878 } 879 880 if (kvm_enabled()) { 881 kvm_s390_get_host_cpu_model(&max_model, errp); 882 } else { 883 max_model.def = s390_find_cpu_def(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 884 QEMU_MAX_CPU_EC_GA, NULL); 885 bitmap_copy(max_model.features, qemu_max_cpu_feat, S390_FEAT_MAX); 886 } 887 if (!*errp) { 888 cached = true; 889 return &max_model; 890 } 891 return NULL; 892 } 893 894 static inline void apply_cpu_model(const S390CPUModel *model, Error **errp) 895 { 896 #ifndef CONFIG_USER_ONLY 897 static S390CPUModel applied_model; 898 static bool applied; 899 900 /* 901 * We have the same model for all VCPUs. KVM can only be configured before 902 * any VCPUs are defined in KVM. 903 */ 904 if (applied) { 905 if (model && memcmp(&applied_model, model, sizeof(S390CPUModel))) { 906 error_setg(errp, "Mixed CPU models are not supported on s390x."); 907 } 908 return; 909 } 910 911 if (kvm_enabled()) { 912 kvm_s390_apply_cpu_model(model, errp); 913 } 914 915 if (!*errp) { 916 applied = true; 917 if (model) { 918 applied_model = *model; 919 } 920 } 921 #endif 922 } 923 924 void s390_realize_cpu_model(CPUState *cs, Error **errp) 925 { 926 S390CPUClass *xcc = S390_CPU_GET_CLASS(cs); 927 S390CPU *cpu = S390_CPU(cs); 928 const S390CPUModel *max_model; 929 930 if (xcc->kvm_required && !kvm_enabled()) { 931 error_setg(errp, "CPU definition requires KVM"); 932 return; 933 } 934 935 if (!cpu->model) { 936 /* no host model support -> perform compatibility stuff */ 937 apply_cpu_model(NULL, errp); 938 return; 939 } 940 941 max_model = get_max_cpu_model(errp); 942 if (*errp) { 943 error_prepend(errp, "CPU models are not available: "); 944 return; 945 } 946 947 /* copy over properties that can vary */ 948 cpu->model->lowest_ibc = max_model->lowest_ibc; 949 cpu->model->cpu_id = max_model->cpu_id; 950 cpu->model->cpu_id_format = max_model->cpu_id_format; 951 cpu->model->cpu_ver = max_model->cpu_ver; 952 953 check_consistency(cpu->model); 954 check_compatibility(max_model, cpu->model, errp); 955 if (*errp) { 956 return; 957 } 958 959 apply_cpu_model(cpu->model, errp); 960 961 #if !defined(CONFIG_USER_ONLY) 962 cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model); 963 if (tcg_enabled()) { 964 /* basic mode, write the cpu address into the first 4 bit of the ID */ 965 cpu->env.cpuid = deposit64(cpu->env.cpuid, 54, 4, cpu->env.core_id); 966 } 967 #endif 968 } 969 970 static void get_feature(Object *obj, Visitor *v, const char *name, 971 void *opaque, Error **errp) 972 { 973 S390Feat feat = (S390Feat) opaque; 974 S390CPU *cpu = S390_CPU(obj); 975 bool value; 976 977 if (!cpu->model) { 978 error_setg(errp, "Details about the host CPU model are not available, " 979 "features cannot be queried."); 980 return; 981 } 982 983 value = test_bit(feat, cpu->model->features); 984 visit_type_bool(v, name, &value, errp); 985 } 986 987 static void set_feature(Object *obj, Visitor *v, const char *name, 988 void *opaque, Error **errp) 989 { 990 S390Feat feat = (S390Feat) opaque; 991 DeviceState *dev = DEVICE(obj); 992 S390CPU *cpu = S390_CPU(obj); 993 bool value; 994 995 if (dev->realized) { 996 error_setg(errp, "Attempt to set property '%s' on '%s' after " 997 "it was realized", name, object_get_typename(obj)); 998 return; 999 } else if (!cpu->model) { 1000 error_setg(errp, "Details about the host CPU model are not available, " 1001 "features cannot be changed."); 1002 return; 1003 } 1004 1005 visit_type_bool(v, name, &value, errp); 1006 if (*errp) { 1007 return; 1008 } 1009 if (value) { 1010 if (!test_bit(feat, cpu->model->def->full_feat)) { 1011 error_setg(errp, "Feature '%s' is not available for CPU model '%s'," 1012 " it was introduced with later models.", 1013 name, cpu->model->def->name); 1014 return; 1015 } 1016 set_bit(feat, cpu->model->features); 1017 } else { 1018 clear_bit(feat, cpu->model->features); 1019 } 1020 } 1021 1022 static void get_feature_group(Object *obj, Visitor *v, const char *name, 1023 void *opaque, Error **errp) 1024 { 1025 S390FeatGroup group = (S390FeatGroup) opaque; 1026 const S390FeatGroupDef *def = s390_feat_group_def(group); 1027 S390CPU *cpu = S390_CPU(obj); 1028 S390FeatBitmap tmp; 1029 bool value; 1030 1031 if (!cpu->model) { 1032 error_setg(errp, "Details about the host CPU model are not available, " 1033 "features cannot be queried."); 1034 return; 1035 } 1036 1037 /* a group is enabled if all features are enabled */ 1038 bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX); 1039 value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX); 1040 visit_type_bool(v, name, &value, errp); 1041 } 1042 1043 static void set_feature_group(Object *obj, Visitor *v, const char *name, 1044 void *opaque, Error **errp) 1045 { 1046 S390FeatGroup group = (S390FeatGroup) opaque; 1047 const S390FeatGroupDef *def = s390_feat_group_def(group); 1048 DeviceState *dev = DEVICE(obj); 1049 S390CPU *cpu = S390_CPU(obj); 1050 bool value; 1051 1052 if (dev->realized) { 1053 error_setg(errp, "Attempt to set property '%s' on '%s' after " 1054 "it was realized", name, object_get_typename(obj)); 1055 return; 1056 } else if (!cpu->model) { 1057 error_setg(errp, "Details about the host CPU model are not available, " 1058 "features cannot be changed."); 1059 return; 1060 } 1061 1062 visit_type_bool(v, name, &value, errp); 1063 if (*errp) { 1064 return; 1065 } 1066 if (value) { 1067 /* groups are added in one shot, so an intersect is sufficient */ 1068 if (!bitmap_intersects(def->feat, cpu->model->def->full_feat, 1069 S390_FEAT_MAX)) { 1070 error_setg(errp, "Group '%s' is not available for CPU model '%s'," 1071 " it was introduced with later models.", 1072 name, cpu->model->def->name); 1073 return; 1074 } 1075 bitmap_or(cpu->model->features, cpu->model->features, def->feat, 1076 S390_FEAT_MAX); 1077 } else { 1078 bitmap_andnot(cpu->model->features, cpu->model->features, def->feat, 1079 S390_FEAT_MAX); 1080 } 1081 } 1082 1083 void s390_cpu_model_register_props(Object *obj) 1084 { 1085 S390FeatGroup group; 1086 S390Feat feat; 1087 1088 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 1089 const S390FeatDef *def = s390_feat_def(feat); 1090 object_property_add(obj, def->name, "bool", get_feature, 1091 set_feature, NULL, (void *) feat, NULL); 1092 object_property_set_description(obj, def->name, def->desc , NULL); 1093 } 1094 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 1095 const S390FeatGroupDef *def = s390_feat_group_def(group); 1096 object_property_add(obj, def->name, "bool", get_feature_group, 1097 set_feature_group, NULL, (void *) group, NULL); 1098 object_property_set_description(obj, def->name, def->desc , NULL); 1099 } 1100 } 1101 1102 static void s390_cpu_model_initfn(Object *obj) 1103 { 1104 S390CPU *cpu = S390_CPU(obj); 1105 S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu); 1106 1107 cpu->model = g_malloc0(sizeof(*cpu->model)); 1108 /* copy the model, so we can modify it */ 1109 cpu->model->def = xcc->cpu_def; 1110 if (xcc->is_static) { 1111 /* base model - features will never change */ 1112 bitmap_copy(cpu->model->features, cpu->model->def->base_feat, 1113 S390_FEAT_MAX); 1114 } else { 1115 /* latest model - features can change */ 1116 bitmap_copy(cpu->model->features, 1117 cpu->model->def->default_feat, S390_FEAT_MAX); 1118 } 1119 } 1120 1121 static S390CPUDef s390_qemu_cpu_def; 1122 static S390CPUModel s390_qemu_cpu_model; 1123 1124 /* Set the qemu CPU model (on machine initialization). Must not be called 1125 * once CPUs have been created. 1126 */ 1127 void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga, 1128 const S390FeatInit feat_init) 1129 { 1130 const S390CPUDef *def = s390_find_cpu_def(type, gen, ec_ga, NULL); 1131 1132 g_assert(def); 1133 g_assert(QTAILQ_EMPTY_RCU(&cpus)); 1134 1135 /* TCG emulates some features that can usually not be enabled with 1136 * the emulated machine generation. Make sure they can be enabled 1137 * when using the QEMU model by adding them to full_feat. We have 1138 * to copy the definition to do that. 1139 */ 1140 memcpy(&s390_qemu_cpu_def, def, sizeof(s390_qemu_cpu_def)); 1141 bitmap_or(s390_qemu_cpu_def.full_feat, s390_qemu_cpu_def.full_feat, 1142 qemu_max_cpu_feat, S390_FEAT_MAX); 1143 1144 /* build the CPU model */ 1145 s390_qemu_cpu_model.def = &s390_qemu_cpu_def; 1146 bitmap_zero(s390_qemu_cpu_model.features, S390_FEAT_MAX); 1147 s390_init_feat_bitmap(feat_init, s390_qemu_cpu_model.features); 1148 } 1149 1150 static void s390_qemu_cpu_model_initfn(Object *obj) 1151 { 1152 S390CPU *cpu = S390_CPU(obj); 1153 1154 cpu->model = g_malloc0(sizeof(*cpu->model)); 1155 /* copy the CPU model so we can modify it */ 1156 memcpy(cpu->model, &s390_qemu_cpu_model, sizeof(*cpu->model)); 1157 } 1158 1159 static void s390_max_cpu_model_initfn(Object *obj) 1160 { 1161 const S390CPUModel *max_model; 1162 S390CPU *cpu = S390_CPU(obj); 1163 Error *local_err = NULL; 1164 1165 if (kvm_enabled() && !kvm_s390_cpu_models_supported()) { 1166 /* "max" and "host" always work, even without CPU model support */ 1167 return; 1168 } 1169 1170 max_model = get_max_cpu_model(&local_err); 1171 if (local_err) { 1172 /* we expect errors only under KVM, when actually querying the kernel */ 1173 g_assert(kvm_enabled()); 1174 error_report_err(local_err); 1175 /* fallback to unsupported CPU models */ 1176 return; 1177 } 1178 1179 cpu->model = g_new(S390CPUModel, 1); 1180 /* copy the CPU model so we can modify it */ 1181 memcpy(cpu->model, max_model, sizeof(*cpu->model)); 1182 } 1183 1184 static void s390_cpu_model_finalize(Object *obj) 1185 { 1186 S390CPU *cpu = S390_CPU(obj); 1187 1188 g_free(cpu->model); 1189 cpu->model = NULL; 1190 } 1191 1192 static bool get_is_migration_safe(Object *obj, Error **errp) 1193 { 1194 return S390_CPU_GET_CLASS(obj)->is_migration_safe; 1195 } 1196 1197 static bool get_is_static(Object *obj, Error **errp) 1198 { 1199 return S390_CPU_GET_CLASS(obj)->is_static; 1200 } 1201 1202 static char *get_description(Object *obj, Error **errp) 1203 { 1204 return g_strdup(S390_CPU_GET_CLASS(obj)->desc); 1205 } 1206 1207 void s390_cpu_model_class_register_props(ObjectClass *oc) 1208 { 1209 object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe, 1210 NULL, NULL); 1211 object_class_property_add_bool(oc, "static", get_is_static, 1212 NULL, NULL); 1213 object_class_property_add_str(oc, "description", get_description, NULL, 1214 NULL); 1215 } 1216 1217 #ifdef CONFIG_KVM 1218 static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data) 1219 { 1220 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1221 1222 xcc->kvm_required = true; 1223 xcc->desc = "KVM only: All recognized features"; 1224 } 1225 #endif 1226 1227 static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data) 1228 { 1229 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1230 1231 /* all base models are migration safe */ 1232 xcc->cpu_def = (const S390CPUDef *) data; 1233 xcc->is_migration_safe = true; 1234 xcc->is_static = true; 1235 xcc->desc = xcc->cpu_def->desc; 1236 } 1237 1238 static void s390_cpu_model_class_init(ObjectClass *oc, void *data) 1239 { 1240 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1241 1242 /* model that can change between QEMU versions */ 1243 xcc->cpu_def = (const S390CPUDef *) data; 1244 xcc->is_migration_safe = true; 1245 xcc->desc = xcc->cpu_def->desc; 1246 } 1247 1248 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data) 1249 { 1250 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1251 1252 xcc->is_migration_safe = true; 1253 xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s", 1254 qemu_hw_version()); 1255 } 1256 1257 static void s390_max_cpu_model_class_init(ObjectClass *oc, void *data) 1258 { 1259 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1260 1261 /* 1262 * The "max" model is neither static nor migration safe. Under KVM 1263 * it represents the "host" model. Under TCG it represents some kind of 1264 * "qemu" CPU model without compat handling and maybe with some additional 1265 * CPU features that are not yet unlocked in the "qemu" model. 1266 */ 1267 xcc->desc = 1268 "Enables all features supported by the accelerator in the current host"; 1269 } 1270 1271 /* Generate type name for a cpu model. Caller has to free the string. */ 1272 static char *s390_cpu_type_name(const char *model_name) 1273 { 1274 return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name); 1275 } 1276 1277 /* Generate type name for a base cpu model. Caller has to free the string. */ 1278 static char *s390_base_cpu_type_name(const char *model_name) 1279 { 1280 return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name); 1281 } 1282 1283 ObjectClass *s390_cpu_class_by_name(const char *name) 1284 { 1285 char *typename = s390_cpu_type_name(name); 1286 ObjectClass *oc; 1287 1288 oc = object_class_by_name(typename); 1289 g_free(typename); 1290 return oc; 1291 } 1292 1293 static const TypeInfo qemu_s390_cpu_type_info = { 1294 .name = S390_CPU_TYPE_NAME("qemu"), 1295 .parent = TYPE_S390_CPU, 1296 .instance_init = s390_qemu_cpu_model_initfn, 1297 .instance_finalize = s390_cpu_model_finalize, 1298 .class_init = s390_qemu_cpu_model_class_init, 1299 }; 1300 1301 static const TypeInfo max_s390_cpu_type_info = { 1302 .name = S390_CPU_TYPE_NAME("max"), 1303 .parent = TYPE_S390_CPU, 1304 .instance_init = s390_max_cpu_model_initfn, 1305 .instance_finalize = s390_cpu_model_finalize, 1306 .class_init = s390_max_cpu_model_class_init, 1307 }; 1308 1309 #ifdef CONFIG_KVM 1310 static const TypeInfo host_s390_cpu_type_info = { 1311 .name = S390_CPU_TYPE_NAME("host"), 1312 .parent = S390_CPU_TYPE_NAME("max"), 1313 .class_init = s390_host_cpu_model_class_init, 1314 }; 1315 #endif 1316 1317 static void init_ignored_base_feat(void) 1318 { 1319 static const int feats[] = { 1320 /* MSA subfunctions that could not be available on certain machines */ 1321 S390_FEAT_KMAC_DEA, 1322 S390_FEAT_KMAC_TDEA_128, 1323 S390_FEAT_KMAC_TDEA_192, 1324 S390_FEAT_KMC_DEA, 1325 S390_FEAT_KMC_TDEA_128, 1326 S390_FEAT_KMC_TDEA_192, 1327 S390_FEAT_KM_DEA, 1328 S390_FEAT_KM_TDEA_128, 1329 S390_FEAT_KM_TDEA_192, 1330 S390_FEAT_KIMD_SHA_1, 1331 S390_FEAT_KLMD_SHA_1, 1332 /* CSSKE is deprecated on newer generations */ 1333 S390_FEAT_CONDITIONAL_SSKE, 1334 }; 1335 int i; 1336 1337 for (i = 0; i < ARRAY_SIZE(feats); i++) { 1338 set_bit(feats[i], ignored_base_feat); 1339 } 1340 } 1341 1342 static void register_types(void) 1343 { 1344 static const S390FeatInit qemu_latest_init = { S390_FEAT_LIST_QEMU_LATEST }; 1345 int i; 1346 1347 init_ignored_base_feat(); 1348 1349 /* init all bitmaps from gnerated data initially */ 1350 s390_init_feat_bitmap(qemu_max_cpu_feat_init, qemu_max_cpu_feat); 1351 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 1352 s390_init_feat_bitmap(s390_cpu_defs[i].base_init, 1353 s390_cpu_defs[i].base_feat); 1354 s390_init_feat_bitmap(s390_cpu_defs[i].default_init, 1355 s390_cpu_defs[i].default_feat); 1356 s390_init_feat_bitmap(s390_cpu_defs[i].full_init, 1357 s390_cpu_defs[i].full_feat); 1358 } 1359 1360 /* initialize the qemu model with latest definition */ 1361 s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 1362 QEMU_MAX_CPU_EC_GA, qemu_latest_init); 1363 1364 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 1365 char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name); 1366 TypeInfo ti_base = { 1367 .name = base_name, 1368 .parent = TYPE_S390_CPU, 1369 .instance_init = s390_cpu_model_initfn, 1370 .instance_finalize = s390_cpu_model_finalize, 1371 .class_init = s390_base_cpu_model_class_init, 1372 .class_data = (void *) &s390_cpu_defs[i], 1373 }; 1374 char *name = s390_cpu_type_name(s390_cpu_defs[i].name); 1375 TypeInfo ti = { 1376 .name = name, 1377 .parent = TYPE_S390_CPU, 1378 .instance_init = s390_cpu_model_initfn, 1379 .instance_finalize = s390_cpu_model_finalize, 1380 .class_init = s390_cpu_model_class_init, 1381 .class_data = (void *) &s390_cpu_defs[i], 1382 }; 1383 1384 type_register_static(&ti_base); 1385 type_register_static(&ti); 1386 g_free(base_name); 1387 g_free(name); 1388 } 1389 1390 type_register_static(&qemu_s390_cpu_type_info); 1391 type_register_static(&max_s390_cpu_type_info); 1392 #ifdef CONFIG_KVM 1393 type_register_static(&host_s390_cpu_type_info); 1394 #endif 1395 } 1396 1397 type_init(register_types) 1398