1 /* 2 * CPU models for s390x 3 * 4 * Copyright 2016 IBM Corp. 5 * 6 * Author(s): David Hildenbrand <dahi@linux.vnet.ibm.com> 7 * 8 * This work is licensed under the terms of the GNU GPL, version 2 or (at 9 * your option) any later version. See the COPYING file in the top-level 10 * directory. 11 */ 12 13 #include "qemu/osdep.h" 14 #include "cpu.h" 15 #include "internal.h" 16 #include "kvm_s390x.h" 17 #include "sysemu/kvm.h" 18 #include "qapi/error.h" 19 #include "qapi/visitor.h" 20 #include "qemu/error-report.h" 21 #include "qapi/qmp/qerror.h" 22 #include "qapi/qobject-input-visitor.h" 23 #include "qapi/qmp/qdict.h" 24 #ifndef CONFIG_USER_ONLY 25 #include "sysemu/arch_init.h" 26 #include "hw/pci/pci.h" 27 #endif 28 #include "qapi/qapi-commands-target.h" 29 30 #define CPUDEF_INIT(_type, _gen, _ec_ga, _mha_pow, _hmfai, _name, _desc) \ 31 { \ 32 .name = _name, \ 33 .type = _type, \ 34 .gen = _gen, \ 35 .ec_ga = _ec_ga, \ 36 .mha_pow = _mha_pow, \ 37 .hmfai = _hmfai, \ 38 .desc = _desc, \ 39 .base_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _BASE }, \ 40 .default_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _DEFAULT }, \ 41 .full_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _FULL }, \ 42 } 43 44 /* 45 * CPU definiton list in order of release. For now, base features of a 46 * following release are always a subset of base features of the previous 47 * release. Same is correct for the other feature sets. 48 * A BC release always follows the corresponding EC release. 49 */ 50 static S390CPUDef s390_cpu_defs[] = { 51 CPUDEF_INIT(0x2064, 7, 1, 38, 0x00000000U, "z900", "IBM zSeries 900 GA1"), 52 CPUDEF_INIT(0x2064, 7, 2, 38, 0x00000000U, "z900.2", "IBM zSeries 900 GA2"), 53 CPUDEF_INIT(0x2064, 7, 3, 38, 0x00000000U, "z900.3", "IBM zSeries 900 GA3"), 54 CPUDEF_INIT(0x2066, 7, 3, 38, 0x00000000U, "z800", "IBM zSeries 800 GA1"), 55 CPUDEF_INIT(0x2084, 8, 1, 38, 0x00000000U, "z990", "IBM zSeries 990 GA1"), 56 CPUDEF_INIT(0x2084, 8, 2, 38, 0x00000000U, "z990.2", "IBM zSeries 990 GA2"), 57 CPUDEF_INIT(0x2084, 8, 3, 38, 0x00000000U, "z990.3", "IBM zSeries 990 GA3"), 58 CPUDEF_INIT(0x2086, 8, 3, 38, 0x00000000U, "z890", "IBM zSeries 880 GA1"), 59 CPUDEF_INIT(0x2084, 8, 4, 38, 0x00000000U, "z990.4", "IBM zSeries 990 GA4"), 60 CPUDEF_INIT(0x2086, 8, 4, 38, 0x00000000U, "z890.2", "IBM zSeries 880 GA2"), 61 CPUDEF_INIT(0x2084, 8, 5, 38, 0x00000000U, "z990.5", "IBM zSeries 990 GA5"), 62 CPUDEF_INIT(0x2086, 8, 5, 38, 0x00000000U, "z890.3", "IBM zSeries 880 GA3"), 63 CPUDEF_INIT(0x2094, 9, 1, 40, 0x00000000U, "z9EC", "IBM System z9 EC GA1"), 64 CPUDEF_INIT(0x2094, 9, 2, 40, 0x00000000U, "z9EC.2", "IBM System z9 EC GA2"), 65 CPUDEF_INIT(0x2096, 9, 2, 40, 0x00000000U, "z9BC", "IBM System z9 BC GA1"), 66 CPUDEF_INIT(0x2094, 9, 3, 40, 0x00000000U, "z9EC.3", "IBM System z9 EC GA3"), 67 CPUDEF_INIT(0x2096, 9, 3, 40, 0x00000000U, "z9BC.2", "IBM System z9 BC GA2"), 68 CPUDEF_INIT(0x2097, 10, 1, 43, 0x00000000U, "z10EC", "IBM System z10 EC GA1"), 69 CPUDEF_INIT(0x2097, 10, 2, 43, 0x00000000U, "z10EC.2", "IBM System z10 EC GA2"), 70 CPUDEF_INIT(0x2098, 10, 2, 43, 0x00000000U, "z10BC", "IBM System z10 BC GA1"), 71 CPUDEF_INIT(0x2097, 10, 3, 43, 0x00000000U, "z10EC.3", "IBM System z10 EC GA3"), 72 CPUDEF_INIT(0x2098, 10, 3, 43, 0x00000000U, "z10BC.2", "IBM System z10 BC GA2"), 73 CPUDEF_INIT(0x2817, 11, 1, 44, 0x08000000U, "z196", "IBM zEnterprise 196 GA1"), 74 CPUDEF_INIT(0x2817, 11, 2, 44, 0x08000000U, "z196.2", "IBM zEnterprise 196 GA2"), 75 CPUDEF_INIT(0x2818, 11, 2, 44, 0x08000000U, "z114", "IBM zEnterprise 114 GA1"), 76 CPUDEF_INIT(0x2827, 12, 1, 44, 0x08000000U, "zEC12", "IBM zEnterprise EC12 GA1"), 77 CPUDEF_INIT(0x2827, 12, 2, 44, 0x08000000U, "zEC12.2", "IBM zEnterprise EC12 GA2"), 78 CPUDEF_INIT(0x2828, 12, 2, 44, 0x08000000U, "zBC12", "IBM zEnterprise BC12 GA1"), 79 CPUDEF_INIT(0x2964, 13, 1, 47, 0x08000000U, "z13", "IBM z13 GA1"), 80 CPUDEF_INIT(0x2964, 13, 2, 47, 0x08000000U, "z13.2", "IBM z13 GA2"), 81 CPUDEF_INIT(0x2965, 13, 2, 47, 0x08000000U, "z13s", "IBM z13s GA1"), 82 CPUDEF_INIT(0x3906, 14, 1, 47, 0x08000000U, "z14", "IBM z14 GA1"), 83 CPUDEF_INIT(0x3907, 14, 1, 47, 0x08000000U, "z14ZR1", "IBM z14 Model ZR1 GA1"), 84 }; 85 86 #define QEMU_MAX_CPU_TYPE 0x2827 87 #define QEMU_MAX_CPU_GEN 12 88 #define QEMU_MAX_CPU_EC_GA 2 89 static const S390FeatInit qemu_max_cpu_feat_init = { S390_FEAT_LIST_QEMU_MAX }; 90 static S390FeatBitmap qemu_max_cpu_feat; 91 92 /* features part of a base model but not relevant for finding a base model */ 93 S390FeatBitmap ignored_base_feat; 94 95 void s390_cpudef_featoff(uint8_t gen, uint8_t ec_ga, S390Feat feat) 96 { 97 const S390CPUDef *def; 98 99 def = s390_find_cpu_def(0, gen, ec_ga, NULL); 100 clear_bit(feat, (unsigned long *)&def->default_feat); 101 } 102 103 void s390_cpudef_featoff_greater(uint8_t gen, uint8_t ec_ga, S390Feat feat) 104 { 105 int i; 106 107 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 108 const S390CPUDef *def = &s390_cpu_defs[i]; 109 110 if (def->gen < gen) { 111 continue; 112 } 113 if (def->gen == gen && def->ec_ga < ec_ga) { 114 continue; 115 } 116 117 clear_bit(feat, (unsigned long *)&def->default_feat); 118 } 119 } 120 121 uint32_t s390_get_hmfai(void) 122 { 123 static S390CPU *cpu; 124 125 if (!cpu) { 126 cpu = S390_CPU(qemu_get_cpu(0)); 127 } 128 129 if (!cpu || !cpu->model) { 130 return 0; 131 } 132 return cpu->model->def->hmfai; 133 } 134 135 uint8_t s390_get_mha_pow(void) 136 { 137 static S390CPU *cpu; 138 139 if (!cpu) { 140 cpu = S390_CPU(qemu_get_cpu(0)); 141 } 142 143 if (!cpu || !cpu->model) { 144 return 0; 145 } 146 return cpu->model->def->mha_pow; 147 } 148 149 uint32_t s390_get_ibc_val(void) 150 { 151 uint16_t unblocked_ibc, lowest_ibc; 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 unblocked_ibc = s390_ibc_from_cpu_model(cpu->model); 162 lowest_ibc = cpu->model->lowest_ibc; 163 /* the lowest_ibc always has to be <= unblocked_ibc */ 164 if (!lowest_ibc || lowest_ibc > unblocked_ibc) { 165 return 0; 166 } 167 return ((uint32_t) lowest_ibc << 16) | unblocked_ibc; 168 } 169 170 void s390_get_feat_block(S390FeatType type, uint8_t *data) 171 { 172 static S390CPU *cpu; 173 174 if (!cpu) { 175 cpu = S390_CPU(qemu_get_cpu(0)); 176 } 177 178 if (!cpu || !cpu->model) { 179 return; 180 } 181 s390_fill_feat_block(cpu->model->features, type, data); 182 } 183 184 bool s390_has_feat(S390Feat feat) 185 { 186 static S390CPU *cpu; 187 188 if (!cpu) { 189 cpu = S390_CPU(qemu_get_cpu(0)); 190 } 191 192 if (!cpu || !cpu->model) { 193 #ifdef CONFIG_KVM 194 if (kvm_enabled()) { 195 if (feat == S390_FEAT_VECTOR) { 196 return kvm_check_extension(kvm_state, 197 KVM_CAP_S390_VECTOR_REGISTERS); 198 } 199 if (feat == S390_FEAT_RUNTIME_INSTRUMENTATION) { 200 return kvm_s390_get_ri(); 201 } 202 if (feat == S390_FEAT_MSA_EXT_3) { 203 return true; 204 } 205 } 206 #endif 207 if (feat == S390_FEAT_ZPCI) { 208 return true; 209 } 210 return 0; 211 } 212 return test_bit(feat, cpu->model->features); 213 } 214 215 uint8_t s390_get_gen_for_cpu_type(uint16_t type) 216 { 217 int i; 218 219 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 220 if (s390_cpu_defs[i].type == type) { 221 return s390_cpu_defs[i].gen; 222 } 223 } 224 return 0; 225 } 226 227 const S390CPUDef *s390_find_cpu_def(uint16_t type, uint8_t gen, uint8_t ec_ga, 228 S390FeatBitmap features) 229 { 230 const S390CPUDef *last_compatible = NULL; 231 const S390CPUDef *matching_cpu_type = NULL; 232 int i; 233 234 if (!gen) { 235 ec_ga = 0; 236 } 237 if (!gen && type) { 238 gen = s390_get_gen_for_cpu_type(type); 239 } 240 241 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 242 const S390CPUDef *def = &s390_cpu_defs[i]; 243 S390FeatBitmap missing; 244 245 /* don't even try newer generations if we know the generation */ 246 if (gen) { 247 if (def->gen > gen) { 248 break; 249 } else if (def->gen == gen && ec_ga && def->ec_ga > ec_ga) { 250 break; 251 } 252 } 253 254 if (features) { 255 /* see if the model satisfies the minimum features */ 256 bitmap_andnot(missing, def->base_feat, features, S390_FEAT_MAX); 257 /* 258 * Ignore certain features that are in the base model, but not 259 * relevant for the search (esp. MSA subfunctions). 260 */ 261 bitmap_andnot(missing, missing, ignored_base_feat, S390_FEAT_MAX); 262 if (!bitmap_empty(missing, S390_FEAT_MAX)) { 263 break; 264 } 265 } 266 267 /* stop the search if we found the exact model */ 268 if (def->type == type && def->ec_ga == ec_ga) { 269 return def; 270 } 271 /* remember if we've at least seen one with the same cpu type */ 272 if (def->type == type) { 273 matching_cpu_type = def; 274 } 275 last_compatible = def; 276 } 277 /* prefer the model with the same cpu type, esp. don't take the BC for EC */ 278 if (matching_cpu_type) { 279 return matching_cpu_type; 280 } 281 return last_compatible; 282 } 283 284 static void s390_print_cpu_model_list_entry(gpointer data, gpointer user_data) 285 { 286 CPUListState *s = user_data; 287 const S390CPUClass *scc = S390_CPU_CLASS((ObjectClass *)data); 288 char *name = g_strdup(object_class_get_name((ObjectClass *)data)); 289 const char *details = ""; 290 291 if (scc->is_static) { 292 details = "(static, migration-safe)"; 293 } else if (scc->is_migration_safe) { 294 details = "(migration-safe)"; 295 } 296 297 /* strip off the -s390x-cpu */ 298 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; 299 (*s->cpu_fprintf)(s->file, "s390 %-15s %-35s %s\n", name, scc->desc, 300 details); 301 g_free(name); 302 } 303 304 static gint s390_cpu_list_compare(gconstpointer a, gconstpointer b) 305 { 306 const S390CPUClass *cc_a = S390_CPU_CLASS((ObjectClass *)a); 307 const S390CPUClass *cc_b = S390_CPU_CLASS((ObjectClass *)b); 308 const char *name_a = object_class_get_name((ObjectClass *)a); 309 const char *name_b = object_class_get_name((ObjectClass *)b); 310 311 /* 312 * Move qemu, host and max to the top of the list, qemu first, host second, 313 * max third. 314 */ 315 if (name_a[0] == 'q') { 316 return -1; 317 } else if (name_b[0] == 'q') { 318 return 1; 319 } else if (name_a[0] == 'h') { 320 return -1; 321 } else if (name_b[0] == 'h') { 322 return 1; 323 } else if (name_a[0] == 'm') { 324 return -1; 325 } else if (name_b[0] == 'm') { 326 return 1; 327 } 328 329 /* keep the same order we have in our table (sorted by release date) */ 330 if (cc_a->cpu_def != cc_b->cpu_def) { 331 return cc_a->cpu_def - cc_b->cpu_def; 332 } 333 334 /* exact same definition - list base model first */ 335 return cc_a->is_static ? -1 : 1; 336 } 337 338 void s390_cpu_list(FILE *f, fprintf_function print) 339 { 340 CPUListState s = { 341 .file = f, 342 .cpu_fprintf = print, 343 }; 344 S390FeatGroup group; 345 S390Feat feat; 346 GSList *list; 347 348 list = object_class_get_list(TYPE_S390_CPU, false); 349 list = g_slist_sort(list, s390_cpu_list_compare); 350 g_slist_foreach(list, s390_print_cpu_model_list_entry, &s); 351 g_slist_free(list); 352 353 (*print)(f, "\nRecognized feature flags:\n"); 354 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 355 const S390FeatDef *def = s390_feat_def(feat); 356 357 (*print)(f, "%-20s %-50s\n", def->name, def->desc); 358 } 359 360 (*print)(f, "\nRecognized feature groups:\n"); 361 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 362 const S390FeatGroupDef *def = s390_feat_group_def(group); 363 364 (*print)(f, "%-20s %-50s\n", def->name, def->desc); 365 } 366 } 367 368 static S390CPUModel *get_max_cpu_model(Error **errp); 369 370 #ifndef CONFIG_USER_ONLY 371 static void list_add_feat(const char *name, void *opaque); 372 373 static void check_unavailable_features(const S390CPUModel *max_model, 374 const S390CPUModel *model, 375 strList **unavailable) 376 { 377 S390FeatBitmap missing; 378 379 /* check general model compatibility */ 380 if (max_model->def->gen < model->def->gen || 381 (max_model->def->gen == model->def->gen && 382 max_model->def->ec_ga < model->def->ec_ga)) { 383 list_add_feat("type", unavailable); 384 } 385 386 /* detect missing features if any to properly report them */ 387 bitmap_andnot(missing, model->features, max_model->features, 388 S390_FEAT_MAX); 389 if (!bitmap_empty(missing, S390_FEAT_MAX)) { 390 s390_feat_bitmap_to_ascii(missing, unavailable, list_add_feat); 391 } 392 } 393 394 struct CpuDefinitionInfoListData { 395 CpuDefinitionInfoList *list; 396 S390CPUModel *model; 397 }; 398 399 static void create_cpu_model_list(ObjectClass *klass, void *opaque) 400 { 401 struct CpuDefinitionInfoListData *cpu_list_data = opaque; 402 CpuDefinitionInfoList **cpu_list = &cpu_list_data->list; 403 CpuDefinitionInfoList *entry; 404 CpuDefinitionInfo *info; 405 char *name = g_strdup(object_class_get_name(klass)); 406 S390CPUClass *scc = S390_CPU_CLASS(klass); 407 408 /* strip off the -s390x-cpu */ 409 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; 410 info = g_new0(CpuDefinitionInfo, 1); 411 info->name = name; 412 info->has_migration_safe = true; 413 info->migration_safe = scc->is_migration_safe; 414 info->q_static = scc->is_static; 415 info->q_typename = g_strdup(object_class_get_name(klass)); 416 /* check for unavailable features */ 417 if (cpu_list_data->model) { 418 Object *obj; 419 S390CPU *sc; 420 obj = object_new(object_class_get_name(klass)); 421 sc = S390_CPU(obj); 422 if (sc->model) { 423 info->has_unavailable_features = true; 424 check_unavailable_features(cpu_list_data->model, sc->model, 425 &info->unavailable_features); 426 } 427 object_unref(obj); 428 } 429 430 entry = g_new0(CpuDefinitionInfoList, 1); 431 entry->value = info; 432 entry->next = *cpu_list; 433 *cpu_list = entry; 434 } 435 436 CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp) 437 { 438 struct CpuDefinitionInfoListData list_data = { 439 .list = NULL, 440 }; 441 442 list_data.model = get_max_cpu_model(errp); 443 if (*errp) { 444 error_free(*errp); 445 *errp = NULL; 446 } 447 448 object_class_foreach(create_cpu_model_list, TYPE_S390_CPU, false, 449 &list_data); 450 451 return list_data.list; 452 } 453 454 static void cpu_model_from_info(S390CPUModel *model, const CpuModelInfo *info, 455 Error **errp) 456 { 457 const QDict *qdict = NULL; 458 const QDictEntry *e; 459 Visitor *visitor; 460 ObjectClass *oc; 461 S390CPU *cpu; 462 Object *obj; 463 464 if (info->props) { 465 qdict = qobject_to(QDict, info->props); 466 if (!qdict) { 467 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict"); 468 return; 469 } 470 } 471 472 oc = cpu_class_by_name(TYPE_S390_CPU, info->name); 473 if (!oc) { 474 error_setg(errp, "The CPU definition \'%s\' is unknown.", info->name); 475 return; 476 } 477 if (S390_CPU_CLASS(oc)->kvm_required && !kvm_enabled()) { 478 error_setg(errp, "The CPU definition '%s' requires KVM", info->name); 479 return; 480 } 481 obj = object_new(object_class_get_name(oc)); 482 cpu = S390_CPU(obj); 483 484 if (!cpu->model) { 485 error_setg(errp, "Details about the host CPU model are not available, " 486 "it cannot be used."); 487 object_unref(obj); 488 return; 489 } 490 491 if (qdict) { 492 visitor = qobject_input_visitor_new(info->props); 493 visit_start_struct(visitor, NULL, NULL, 0, errp); 494 if (*errp) { 495 object_unref(obj); 496 return; 497 } 498 for (e = qdict_first(qdict); e; e = qdict_next(qdict, e)) { 499 object_property_set(obj, visitor, e->key, errp); 500 if (*errp) { 501 break; 502 } 503 } 504 if (!*errp) { 505 visit_check_struct(visitor, errp); 506 } 507 visit_end_struct(visitor, NULL); 508 visit_free(visitor); 509 if (*errp) { 510 object_unref(obj); 511 return; 512 } 513 } 514 515 /* copy the model and throw the cpu away */ 516 memcpy(model, cpu->model, sizeof(*model)); 517 object_unref(obj); 518 } 519 520 static void qdict_add_disabled_feat(const char *name, void *opaque) 521 { 522 qdict_put_bool(opaque, name, false); 523 } 524 525 static void qdict_add_enabled_feat(const char *name, void *opaque) 526 { 527 qdict_put_bool(opaque, name, true); 528 } 529 530 /* convert S390CPUDef into a static CpuModelInfo */ 531 static void cpu_info_from_model(CpuModelInfo *info, const S390CPUModel *model, 532 bool delta_changes) 533 { 534 QDict *qdict = qdict_new(); 535 S390FeatBitmap bitmap; 536 537 /* always fallback to the static base model */ 538 info->name = g_strdup_printf("%s-base", model->def->name); 539 540 if (delta_changes) { 541 /* features deleted from the base feature set */ 542 bitmap_andnot(bitmap, model->def->base_feat, model->features, 543 S390_FEAT_MAX); 544 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) { 545 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat); 546 } 547 548 /* features added to the base feature set */ 549 bitmap_andnot(bitmap, model->features, model->def->base_feat, 550 S390_FEAT_MAX); 551 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) { 552 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_enabled_feat); 553 } 554 } else { 555 /* expand all features */ 556 s390_feat_bitmap_to_ascii(model->features, qdict, 557 qdict_add_enabled_feat); 558 bitmap_complement(bitmap, model->features, S390_FEAT_MAX); 559 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat); 560 } 561 562 if (!qdict_size(qdict)) { 563 qobject_unref(qdict); 564 } else { 565 info->props = QOBJECT(qdict); 566 info->has_props = true; 567 } 568 } 569 570 CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type, 571 CpuModelInfo *model, 572 Error **errp) 573 { 574 CpuModelExpansionInfo *expansion_info = NULL; 575 S390CPUModel s390_model; 576 bool delta_changes = false; 577 578 /* convert it to our internal representation */ 579 cpu_model_from_info(&s390_model, model, errp); 580 if (*errp) { 581 return NULL; 582 } 583 584 if (type == CPU_MODEL_EXPANSION_TYPE_STATIC) { 585 delta_changes = true; 586 } else if (type != CPU_MODEL_EXPANSION_TYPE_FULL) { 587 error_setg(errp, "The requested expansion type is not supported."); 588 return NULL; 589 } 590 591 /* convert it back to a static representation */ 592 expansion_info = g_new0(CpuModelExpansionInfo, 1); 593 expansion_info->model = g_malloc0(sizeof(*expansion_info->model)); 594 cpu_info_from_model(expansion_info->model, &s390_model, delta_changes); 595 return expansion_info; 596 } 597 598 static void list_add_feat(const char *name, void *opaque) 599 { 600 strList **last = (strList **) opaque; 601 strList *entry; 602 603 entry = g_new0(strList, 1); 604 entry->value = g_strdup(name); 605 entry->next = *last; 606 *last = entry; 607 } 608 609 CpuModelCompareInfo *qmp_query_cpu_model_comparison(CpuModelInfo *infoa, 610 CpuModelInfo *infob, 611 Error **errp) 612 { 613 CpuModelCompareResult feat_result, gen_result; 614 CpuModelCompareInfo *compare_info; 615 S390FeatBitmap missing, added; 616 S390CPUModel modela, modelb; 617 618 /* convert both models to our internal representation */ 619 cpu_model_from_info(&modela, infoa, errp); 620 if (*errp) { 621 return NULL; 622 } 623 cpu_model_from_info(&modelb, infob, errp); 624 if (*errp) { 625 return NULL; 626 } 627 compare_info = g_new0(CpuModelCompareInfo, 1); 628 629 /* check the cpu generation and ga level */ 630 if (modela.def->gen == modelb.def->gen) { 631 if (modela.def->ec_ga == modelb.def->ec_ga) { 632 /* ec and corresponding bc are identical */ 633 gen_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; 634 } else if (modela.def->ec_ga < modelb.def->ec_ga) { 635 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 636 } else { 637 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 638 } 639 } else if (modela.def->gen < modelb.def->gen) { 640 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 641 } else { 642 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 643 } 644 if (gen_result != CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 645 /* both models cannot be made identical */ 646 list_add_feat("type", &compare_info->responsible_properties); 647 } 648 649 /* check the feature set */ 650 if (bitmap_equal(modela.features, modelb.features, S390_FEAT_MAX)) { 651 feat_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; 652 } else { 653 bitmap_andnot(missing, modela.features, modelb.features, S390_FEAT_MAX); 654 s390_feat_bitmap_to_ascii(missing, 655 &compare_info->responsible_properties, 656 list_add_feat); 657 bitmap_andnot(added, modelb.features, modela.features, S390_FEAT_MAX); 658 s390_feat_bitmap_to_ascii(added, &compare_info->responsible_properties, 659 list_add_feat); 660 if (bitmap_empty(missing, S390_FEAT_MAX)) { 661 feat_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 662 } else if (bitmap_empty(added, S390_FEAT_MAX)) { 663 feat_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 664 } else { 665 feat_result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; 666 } 667 } 668 669 /* combine the results */ 670 if (gen_result == feat_result) { 671 compare_info->result = gen_result; 672 } else if (feat_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 673 compare_info->result = gen_result; 674 } else if (gen_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 675 compare_info->result = feat_result; 676 } else { 677 compare_info->result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; 678 } 679 return compare_info; 680 } 681 682 CpuModelBaselineInfo *qmp_query_cpu_model_baseline(CpuModelInfo *infoa, 683 CpuModelInfo *infob, 684 Error **errp) 685 { 686 CpuModelBaselineInfo *baseline_info; 687 S390CPUModel modela, modelb, model; 688 uint16_t cpu_type; 689 uint8_t max_gen_ga; 690 uint8_t max_gen; 691 692 /* convert both models to our internal representation */ 693 cpu_model_from_info(&modela, infoa, errp); 694 if (*errp) { 695 return NULL; 696 } 697 698 cpu_model_from_info(&modelb, infob, errp); 699 if (*errp) { 700 return NULL; 701 } 702 703 /* features both models support */ 704 bitmap_and(model.features, modela.features, modelb.features, S390_FEAT_MAX); 705 706 /* detect the maximum model not regarding features */ 707 if (modela.def->gen == modelb.def->gen) { 708 if (modela.def->type == modelb.def->type) { 709 cpu_type = modela.def->type; 710 } else { 711 cpu_type = 0; 712 } 713 max_gen = modela.def->gen; 714 max_gen_ga = MIN(modela.def->ec_ga, modelb.def->ec_ga); 715 } else if (modela.def->gen > modelb.def->gen) { 716 cpu_type = modelb.def->type; 717 max_gen = modelb.def->gen; 718 max_gen_ga = modelb.def->ec_ga; 719 } else { 720 cpu_type = modela.def->type; 721 max_gen = modela.def->gen; 722 max_gen_ga = modela.def->ec_ga; 723 } 724 725 model.def = s390_find_cpu_def(cpu_type, max_gen, max_gen_ga, 726 model.features); 727 728 /* models without early base features (esan3) are bad */ 729 if (!model.def) { 730 error_setg(errp, "No compatible CPU model could be created as" 731 " important base features are disabled"); 732 return NULL; 733 } 734 735 /* strip off features not part of the max model */ 736 bitmap_and(model.features, model.features, model.def->full_feat, 737 S390_FEAT_MAX); 738 739 baseline_info = g_new0(CpuModelBaselineInfo, 1); 740 baseline_info->model = g_malloc0(sizeof(*baseline_info->model)); 741 cpu_info_from_model(baseline_info->model, &model, true); 742 return baseline_info; 743 } 744 #endif 745 746 static void check_consistency(const S390CPUModel *model) 747 { 748 static int dep[][2] = { 749 { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH }, 750 { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH }, 751 { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH }, 752 { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT }, 753 { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH}, 754 { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT }, 755 { S390_FEAT_DFP_FAST, S390_FEAT_DFP }, 756 { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 }, 757 { S390_FEAT_EDAT_2, S390_FEAT_EDAT}, 758 { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 }, 759 { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 }, 760 { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 }, 761 { S390_FEAT_SIE_CMMA, S390_FEAT_CMM }, 762 { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS }, 763 { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT }, 764 { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 }, 765 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 766 { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR }, 767 { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR }, 768 { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 769 { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP }, 770 { S390_FEAT_CMM_NT, S390_FEAT_CMM }, 771 { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 772 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST }, 773 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 774 { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 }, 775 { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA }, 776 { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA }, 777 { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA }, 778 { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA }, 779 { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA }, 780 { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA }, 781 { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA }, 782 { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA }, 783 { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA }, 784 { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA }, 785 { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA }, 786 { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA }, 787 { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 }, 788 { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 }, 789 { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 }, 790 { S390_FEAT_AP_QUERY_CONFIG_INFO, S390_FEAT_AP }, 791 { S390_FEAT_AP_FACILITIES_TEST, S390_FEAT_AP }, 792 }; 793 int i; 794 795 for (i = 0; i < ARRAY_SIZE(dep); i++) { 796 if (test_bit(dep[i][0], model->features) && 797 !test_bit(dep[i][1], model->features)) { 798 warn_report("\'%s\' requires \'%s\'.", 799 s390_feat_def(dep[i][0])->name, 800 s390_feat_def(dep[i][1])->name); 801 } 802 } 803 } 804 805 static void error_prepend_missing_feat(const char *name, void *opaque) 806 { 807 error_prepend((Error **) opaque, "%s ", name); 808 } 809 810 static void check_compatibility(const S390CPUModel *max_model, 811 const S390CPUModel *model, Error **errp) 812 { 813 S390FeatBitmap missing; 814 815 if (model->def->gen > max_model->def->gen) { 816 error_setg(errp, "Selected CPU generation is too new. Maximum " 817 "supported model in the configuration: \'%s\'", 818 max_model->def->name); 819 return; 820 } else if (model->def->gen == max_model->def->gen && 821 model->def->ec_ga > max_model->def->ec_ga) { 822 error_setg(errp, "Selected CPU GA level is too new. Maximum " 823 "supported model in the configuration: \'%s\'", 824 max_model->def->name); 825 return; 826 } 827 828 /* detect the missing features to properly report them */ 829 bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX); 830 if (bitmap_empty(missing, S390_FEAT_MAX)) { 831 return; 832 } 833 834 error_setg(errp, " "); 835 s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat); 836 error_prepend(errp, "Some features requested in the CPU model are not " 837 "available in the configuration: "); 838 } 839 840 static S390CPUModel *get_max_cpu_model(Error **errp) 841 { 842 static S390CPUModel max_model; 843 static bool cached; 844 845 if (cached) { 846 return &max_model; 847 } 848 849 if (kvm_enabled()) { 850 kvm_s390_get_host_cpu_model(&max_model, errp); 851 } else { 852 max_model.def = s390_find_cpu_def(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 853 QEMU_MAX_CPU_EC_GA, NULL); 854 bitmap_copy(max_model.features, qemu_max_cpu_feat, S390_FEAT_MAX); 855 } 856 if (!*errp) { 857 cached = true; 858 return &max_model; 859 } 860 return NULL; 861 } 862 863 static inline void apply_cpu_model(const S390CPUModel *model, Error **errp) 864 { 865 #ifndef CONFIG_USER_ONLY 866 static S390CPUModel applied_model; 867 static bool applied; 868 869 /* 870 * We have the same model for all VCPUs. KVM can only be configured before 871 * any VCPUs are defined in KVM. 872 */ 873 if (applied) { 874 if (model && memcmp(&applied_model, model, sizeof(S390CPUModel))) { 875 error_setg(errp, "Mixed CPU models are not supported on s390x."); 876 } 877 return; 878 } 879 880 if (kvm_enabled()) { 881 kvm_s390_apply_cpu_model(model, errp); 882 } 883 884 if (!*errp) { 885 applied = true; 886 if (model) { 887 applied_model = *model; 888 } 889 } 890 #endif 891 } 892 893 void s390_realize_cpu_model(CPUState *cs, Error **errp) 894 { 895 S390CPUClass *xcc = S390_CPU_GET_CLASS(cs); 896 S390CPU *cpu = S390_CPU(cs); 897 const S390CPUModel *max_model; 898 899 if (xcc->kvm_required && !kvm_enabled()) { 900 error_setg(errp, "CPU definition requires KVM"); 901 return; 902 } 903 904 if (!cpu->model) { 905 /* no host model support -> perform compatibility stuff */ 906 apply_cpu_model(NULL, errp); 907 return; 908 } 909 910 max_model = get_max_cpu_model(errp); 911 if (*errp) { 912 error_prepend(errp, "CPU models are not available: "); 913 return; 914 } 915 916 /* copy over properties that can vary */ 917 cpu->model->lowest_ibc = max_model->lowest_ibc; 918 cpu->model->cpu_id = max_model->cpu_id; 919 cpu->model->cpu_id_format = max_model->cpu_id_format; 920 cpu->model->cpu_ver = max_model->cpu_ver; 921 922 check_consistency(cpu->model); 923 check_compatibility(max_model, cpu->model, errp); 924 if (*errp) { 925 return; 926 } 927 928 apply_cpu_model(cpu->model, errp); 929 930 #if !defined(CONFIG_USER_ONLY) 931 cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model); 932 if (tcg_enabled()) { 933 /* basic mode, write the cpu address into the first 4 bit of the ID */ 934 cpu->env.cpuid = deposit64(cpu->env.cpuid, 54, 4, cpu->env.core_id); 935 } 936 #endif 937 } 938 939 static void get_feature(Object *obj, Visitor *v, const char *name, 940 void *opaque, Error **errp) 941 { 942 S390Feat feat = (S390Feat) opaque; 943 S390CPU *cpu = S390_CPU(obj); 944 bool value; 945 946 if (!cpu->model) { 947 error_setg(errp, "Details about the host CPU model are not available, " 948 "features cannot be queried."); 949 return; 950 } 951 952 value = test_bit(feat, cpu->model->features); 953 visit_type_bool(v, name, &value, errp); 954 } 955 956 static void set_feature(Object *obj, Visitor *v, const char *name, 957 void *opaque, Error **errp) 958 { 959 S390Feat feat = (S390Feat) opaque; 960 DeviceState *dev = DEVICE(obj); 961 S390CPU *cpu = S390_CPU(obj); 962 bool value; 963 964 if (dev->realized) { 965 error_setg(errp, "Attempt to set property '%s' on '%s' after " 966 "it was realized", name, object_get_typename(obj)); 967 return; 968 } else if (!cpu->model) { 969 error_setg(errp, "Details about the host CPU model are not available, " 970 "features cannot be changed."); 971 return; 972 } 973 974 visit_type_bool(v, name, &value, errp); 975 if (*errp) { 976 return; 977 } 978 if (value) { 979 if (!test_bit(feat, cpu->model->def->full_feat)) { 980 error_setg(errp, "Feature '%s' is not available for CPU model '%s'," 981 " it was introduced with later models.", 982 name, cpu->model->def->name); 983 return; 984 } 985 set_bit(feat, cpu->model->features); 986 } else { 987 clear_bit(feat, cpu->model->features); 988 } 989 } 990 991 static void get_feature_group(Object *obj, Visitor *v, const char *name, 992 void *opaque, Error **errp) 993 { 994 S390FeatGroup group = (S390FeatGroup) opaque; 995 const S390FeatGroupDef *def = s390_feat_group_def(group); 996 S390CPU *cpu = S390_CPU(obj); 997 S390FeatBitmap tmp; 998 bool value; 999 1000 if (!cpu->model) { 1001 error_setg(errp, "Details about the host CPU model are not available, " 1002 "features cannot be queried."); 1003 return; 1004 } 1005 1006 /* a group is enabled if all features are enabled */ 1007 bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX); 1008 value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX); 1009 visit_type_bool(v, name, &value, errp); 1010 } 1011 1012 static void set_feature_group(Object *obj, Visitor *v, const char *name, 1013 void *opaque, Error **errp) 1014 { 1015 S390FeatGroup group = (S390FeatGroup) opaque; 1016 const S390FeatGroupDef *def = s390_feat_group_def(group); 1017 DeviceState *dev = DEVICE(obj); 1018 S390CPU *cpu = S390_CPU(obj); 1019 bool value; 1020 1021 if (dev->realized) { 1022 error_setg(errp, "Attempt to set property '%s' on '%s' after " 1023 "it was realized", name, object_get_typename(obj)); 1024 return; 1025 } else if (!cpu->model) { 1026 error_setg(errp, "Details about the host CPU model are not available, " 1027 "features cannot be changed."); 1028 return; 1029 } 1030 1031 visit_type_bool(v, name, &value, errp); 1032 if (*errp) { 1033 return; 1034 } 1035 if (value) { 1036 /* groups are added in one shot, so an intersect is sufficient */ 1037 if (!bitmap_intersects(def->feat, cpu->model->def->full_feat, 1038 S390_FEAT_MAX)) { 1039 error_setg(errp, "Group '%s' is not available for CPU model '%s'," 1040 " it was introduced with later models.", 1041 name, cpu->model->def->name); 1042 return; 1043 } 1044 bitmap_or(cpu->model->features, cpu->model->features, def->feat, 1045 S390_FEAT_MAX); 1046 } else { 1047 bitmap_andnot(cpu->model->features, cpu->model->features, def->feat, 1048 S390_FEAT_MAX); 1049 } 1050 } 1051 1052 void s390_cpu_model_register_props(Object *obj) 1053 { 1054 S390FeatGroup group; 1055 S390Feat feat; 1056 1057 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 1058 const S390FeatDef *def = s390_feat_def(feat); 1059 object_property_add(obj, def->name, "bool", get_feature, 1060 set_feature, NULL, (void *) feat, NULL); 1061 object_property_set_description(obj, def->name, def->desc , NULL); 1062 } 1063 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 1064 const S390FeatGroupDef *def = s390_feat_group_def(group); 1065 object_property_add(obj, def->name, "bool", get_feature_group, 1066 set_feature_group, NULL, (void *) group, NULL); 1067 object_property_set_description(obj, def->name, def->desc , NULL); 1068 } 1069 } 1070 1071 static void s390_cpu_model_initfn(Object *obj) 1072 { 1073 S390CPU *cpu = S390_CPU(obj); 1074 S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu); 1075 1076 cpu->model = g_malloc0(sizeof(*cpu->model)); 1077 /* copy the model, so we can modify it */ 1078 cpu->model->def = xcc->cpu_def; 1079 if (xcc->is_static) { 1080 /* base model - features will never change */ 1081 bitmap_copy(cpu->model->features, cpu->model->def->base_feat, 1082 S390_FEAT_MAX); 1083 } else { 1084 /* latest model - features can change */ 1085 bitmap_copy(cpu->model->features, 1086 cpu->model->def->default_feat, S390_FEAT_MAX); 1087 } 1088 } 1089 1090 static S390CPUDef s390_qemu_cpu_def; 1091 static S390CPUModel s390_qemu_cpu_model; 1092 1093 /* Set the qemu CPU model (on machine initialization). Must not be called 1094 * once CPUs have been created. 1095 */ 1096 void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga, 1097 const S390FeatInit feat_init) 1098 { 1099 const S390CPUDef *def = s390_find_cpu_def(type, gen, ec_ga, NULL); 1100 1101 g_assert(def); 1102 g_assert(QTAILQ_EMPTY_RCU(&cpus)); 1103 1104 /* TCG emulates some features that can usually not be enabled with 1105 * the emulated machine generation. Make sure they can be enabled 1106 * when using the QEMU model by adding them to full_feat. We have 1107 * to copy the definition to do that. 1108 */ 1109 memcpy(&s390_qemu_cpu_def, def, sizeof(s390_qemu_cpu_def)); 1110 bitmap_or(s390_qemu_cpu_def.full_feat, s390_qemu_cpu_def.full_feat, 1111 qemu_max_cpu_feat, S390_FEAT_MAX); 1112 1113 /* build the CPU model */ 1114 s390_qemu_cpu_model.def = &s390_qemu_cpu_def; 1115 bitmap_zero(s390_qemu_cpu_model.features, S390_FEAT_MAX); 1116 s390_init_feat_bitmap(feat_init, s390_qemu_cpu_model.features); 1117 } 1118 1119 static void s390_qemu_cpu_model_initfn(Object *obj) 1120 { 1121 S390CPU *cpu = S390_CPU(obj); 1122 1123 cpu->model = g_malloc0(sizeof(*cpu->model)); 1124 /* copy the CPU model so we can modify it */ 1125 memcpy(cpu->model, &s390_qemu_cpu_model, sizeof(*cpu->model)); 1126 } 1127 1128 static void s390_max_cpu_model_initfn(Object *obj) 1129 { 1130 const S390CPUModel *max_model; 1131 S390CPU *cpu = S390_CPU(obj); 1132 Error *local_err = NULL; 1133 1134 if (kvm_enabled() && !kvm_s390_cpu_models_supported()) { 1135 /* "max" and "host" always work, even without CPU model support */ 1136 return; 1137 } 1138 1139 max_model = get_max_cpu_model(&local_err); 1140 if (local_err) { 1141 /* we expect errors only under KVM, when actually querying the kernel */ 1142 g_assert(kvm_enabled()); 1143 error_report_err(local_err); 1144 /* fallback to unsupported CPU models */ 1145 return; 1146 } 1147 1148 cpu->model = g_new(S390CPUModel, 1); 1149 /* copy the CPU model so we can modify it */ 1150 memcpy(cpu->model, max_model, sizeof(*cpu->model)); 1151 } 1152 1153 static void s390_cpu_model_finalize(Object *obj) 1154 { 1155 S390CPU *cpu = S390_CPU(obj); 1156 1157 g_free(cpu->model); 1158 cpu->model = NULL; 1159 } 1160 1161 static bool get_is_migration_safe(Object *obj, Error **errp) 1162 { 1163 return S390_CPU_GET_CLASS(obj)->is_migration_safe; 1164 } 1165 1166 static bool get_is_static(Object *obj, Error **errp) 1167 { 1168 return S390_CPU_GET_CLASS(obj)->is_static; 1169 } 1170 1171 static char *get_description(Object *obj, Error **errp) 1172 { 1173 return g_strdup(S390_CPU_GET_CLASS(obj)->desc); 1174 } 1175 1176 void s390_cpu_model_class_register_props(ObjectClass *oc) 1177 { 1178 object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe, 1179 NULL, NULL); 1180 object_class_property_add_bool(oc, "static", get_is_static, 1181 NULL, NULL); 1182 object_class_property_add_str(oc, "description", get_description, NULL, 1183 NULL); 1184 } 1185 1186 #ifdef CONFIG_KVM 1187 static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data) 1188 { 1189 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1190 1191 xcc->kvm_required = true; 1192 xcc->desc = "KVM only: All recognized features"; 1193 } 1194 #endif 1195 1196 static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data) 1197 { 1198 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1199 1200 /* all base models are migration safe */ 1201 xcc->cpu_def = (const S390CPUDef *) data; 1202 xcc->is_migration_safe = true; 1203 xcc->is_static = true; 1204 xcc->desc = xcc->cpu_def->desc; 1205 } 1206 1207 static void s390_cpu_model_class_init(ObjectClass *oc, void *data) 1208 { 1209 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1210 1211 /* model that can change between QEMU versions */ 1212 xcc->cpu_def = (const S390CPUDef *) data; 1213 xcc->is_migration_safe = true; 1214 xcc->desc = xcc->cpu_def->desc; 1215 } 1216 1217 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data) 1218 { 1219 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1220 1221 xcc->is_migration_safe = true; 1222 xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s", 1223 qemu_hw_version()); 1224 } 1225 1226 static void s390_max_cpu_model_class_init(ObjectClass *oc, void *data) 1227 { 1228 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1229 1230 /* 1231 * The "max" model is neither static nor migration safe. Under KVM 1232 * it represents the "host" model. Under TCG it represents some kind of 1233 * "qemu" CPU model without compat handling and maybe with some additional 1234 * CPU features that are not yet unlocked in the "qemu" model. 1235 */ 1236 xcc->desc = 1237 "Enables all features supported by the accelerator in the current host"; 1238 } 1239 1240 /* Generate type name for a cpu model. Caller has to free the string. */ 1241 static char *s390_cpu_type_name(const char *model_name) 1242 { 1243 return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name); 1244 } 1245 1246 /* Generate type name for a base cpu model. Caller has to free the string. */ 1247 static char *s390_base_cpu_type_name(const char *model_name) 1248 { 1249 return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name); 1250 } 1251 1252 ObjectClass *s390_cpu_class_by_name(const char *name) 1253 { 1254 char *typename = s390_cpu_type_name(name); 1255 ObjectClass *oc; 1256 1257 oc = object_class_by_name(typename); 1258 g_free(typename); 1259 return oc; 1260 } 1261 1262 static const TypeInfo qemu_s390_cpu_type_info = { 1263 .name = S390_CPU_TYPE_NAME("qemu"), 1264 .parent = TYPE_S390_CPU, 1265 .instance_init = s390_qemu_cpu_model_initfn, 1266 .instance_finalize = s390_cpu_model_finalize, 1267 .class_init = s390_qemu_cpu_model_class_init, 1268 }; 1269 1270 static const TypeInfo max_s390_cpu_type_info = { 1271 .name = S390_CPU_TYPE_NAME("max"), 1272 .parent = TYPE_S390_CPU, 1273 .instance_init = s390_max_cpu_model_initfn, 1274 .instance_finalize = s390_cpu_model_finalize, 1275 .class_init = s390_max_cpu_model_class_init, 1276 }; 1277 1278 #ifdef CONFIG_KVM 1279 static const TypeInfo host_s390_cpu_type_info = { 1280 .name = S390_CPU_TYPE_NAME("host"), 1281 .parent = S390_CPU_TYPE_NAME("max"), 1282 .class_init = s390_host_cpu_model_class_init, 1283 }; 1284 #endif 1285 1286 static void init_ignored_base_feat(void) 1287 { 1288 static const int feats[] = { 1289 /* MSA subfunctions that could not be available on certain machines */ 1290 S390_FEAT_KMAC_DEA, 1291 S390_FEAT_KMAC_TDEA_128, 1292 S390_FEAT_KMAC_TDEA_192, 1293 S390_FEAT_KMC_DEA, 1294 S390_FEAT_KMC_TDEA_128, 1295 S390_FEAT_KMC_TDEA_192, 1296 S390_FEAT_KM_DEA, 1297 S390_FEAT_KM_TDEA_128, 1298 S390_FEAT_KM_TDEA_192, 1299 S390_FEAT_KIMD_SHA_1, 1300 S390_FEAT_KLMD_SHA_1, 1301 }; 1302 int i; 1303 1304 for (i = 0; i < ARRAY_SIZE(feats); i++) { 1305 set_bit(feats[i], ignored_base_feat); 1306 } 1307 } 1308 1309 static void register_types(void) 1310 { 1311 static const S390FeatInit qemu_latest_init = { S390_FEAT_LIST_QEMU_LATEST }; 1312 int i; 1313 1314 init_ignored_base_feat(); 1315 1316 /* init all bitmaps from gnerated data initially */ 1317 s390_init_feat_bitmap(qemu_max_cpu_feat_init, qemu_max_cpu_feat); 1318 #ifndef CONFIG_USER_ONLY 1319 if (!pci_available) { 1320 clear_bit(S390_FEAT_ZPCI, qemu_max_cpu_feat); 1321 } 1322 #endif 1323 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 1324 s390_init_feat_bitmap(s390_cpu_defs[i].base_init, 1325 s390_cpu_defs[i].base_feat); 1326 s390_init_feat_bitmap(s390_cpu_defs[i].default_init, 1327 s390_cpu_defs[i].default_feat); 1328 s390_init_feat_bitmap(s390_cpu_defs[i].full_init, 1329 s390_cpu_defs[i].full_feat); 1330 } 1331 1332 /* initialize the qemu model with latest definition */ 1333 s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 1334 QEMU_MAX_CPU_EC_GA, qemu_latest_init); 1335 1336 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 1337 char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name); 1338 TypeInfo ti_base = { 1339 .name = base_name, 1340 .parent = TYPE_S390_CPU, 1341 .instance_init = s390_cpu_model_initfn, 1342 .instance_finalize = s390_cpu_model_finalize, 1343 .class_init = s390_base_cpu_model_class_init, 1344 .class_data = (void *) &s390_cpu_defs[i], 1345 }; 1346 char *name = s390_cpu_type_name(s390_cpu_defs[i].name); 1347 TypeInfo ti = { 1348 .name = name, 1349 .parent = TYPE_S390_CPU, 1350 .instance_init = s390_cpu_model_initfn, 1351 .instance_finalize = s390_cpu_model_finalize, 1352 .class_init = s390_cpu_model_class_init, 1353 .class_data = (void *) &s390_cpu_defs[i], 1354 }; 1355 1356 type_register_static(&ti_base); 1357 type_register_static(&ti); 1358 g_free(base_name); 1359 g_free(name); 1360 } 1361 1362 type_register_static(&qemu_s390_cpu_type_info); 1363 type_register_static(&max_s390_cpu_type_info); 1364 #ifdef CONFIG_KVM 1365 type_register_static(&host_s390_cpu_type_info); 1366 #endif 1367 } 1368 1369 type_init(register_types) 1370