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 #include "hw/s390x/pv.h" 33 34 #define CPUDEF_INIT(_type, _gen, _ec_ga, _mha_pow, _hmfai, _name, _desc) \ 35 { \ 36 .name = _name, \ 37 .type = _type, \ 38 .gen = _gen, \ 39 .ec_ga = _ec_ga, \ 40 .mha_pow = _mha_pow, \ 41 .hmfai = _hmfai, \ 42 .desc = _desc, \ 43 .base_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _BASE }, \ 44 .default_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _DEFAULT }, \ 45 .full_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _FULL }, \ 46 } 47 48 /* 49 * CPU definition list in order of release. Up to generation 14 base features 50 * of a following release have been a superset of the previous release. With 51 * generation 15 one base feature and one optional feature have been deprecated. 52 */ 53 static S390CPUDef s390_cpu_defs[] = { 54 CPUDEF_INIT(0x2064, 7, 1, 38, 0x00000000U, "z900", "IBM zSeries 900 GA1"), 55 CPUDEF_INIT(0x2064, 7, 2, 38, 0x00000000U, "z900.2", "IBM zSeries 900 GA2"), 56 CPUDEF_INIT(0x2064, 7, 3, 38, 0x00000000U, "z900.3", "IBM zSeries 900 GA3"), 57 CPUDEF_INIT(0x2066, 7, 3, 38, 0x00000000U, "z800", "IBM zSeries 800 GA1"), 58 CPUDEF_INIT(0x2084, 8, 1, 38, 0x00000000U, "z990", "IBM zSeries 990 GA1"), 59 CPUDEF_INIT(0x2084, 8, 2, 38, 0x00000000U, "z990.2", "IBM zSeries 990 GA2"), 60 CPUDEF_INIT(0x2084, 8, 3, 38, 0x00000000U, "z990.3", "IBM zSeries 990 GA3"), 61 CPUDEF_INIT(0x2086, 8, 3, 38, 0x00000000U, "z890", "IBM zSeries 880 GA1"), 62 CPUDEF_INIT(0x2084, 8, 4, 38, 0x00000000U, "z990.4", "IBM zSeries 990 GA4"), 63 CPUDEF_INIT(0x2086, 8, 4, 38, 0x00000000U, "z890.2", "IBM zSeries 880 GA2"), 64 CPUDEF_INIT(0x2084, 8, 5, 38, 0x00000000U, "z990.5", "IBM zSeries 990 GA5"), 65 CPUDEF_INIT(0x2086, 8, 5, 38, 0x00000000U, "z890.3", "IBM zSeries 880 GA3"), 66 CPUDEF_INIT(0x2094, 9, 1, 40, 0x00000000U, "z9EC", "IBM System z9 EC GA1"), 67 CPUDEF_INIT(0x2094, 9, 2, 40, 0x00000000U, "z9EC.2", "IBM System z9 EC GA2"), 68 CPUDEF_INIT(0x2096, 9, 2, 40, 0x00000000U, "z9BC", "IBM System z9 BC GA1"), 69 CPUDEF_INIT(0x2094, 9, 3, 40, 0x00000000U, "z9EC.3", "IBM System z9 EC GA3"), 70 CPUDEF_INIT(0x2096, 9, 3, 40, 0x00000000U, "z9BC.2", "IBM System z9 BC GA2"), 71 CPUDEF_INIT(0x2097, 10, 1, 43, 0x00000000U, "z10EC", "IBM System z10 EC GA1"), 72 CPUDEF_INIT(0x2097, 10, 2, 43, 0x00000000U, "z10EC.2", "IBM System z10 EC GA2"), 73 CPUDEF_INIT(0x2098, 10, 2, 43, 0x00000000U, "z10BC", "IBM System z10 BC GA1"), 74 CPUDEF_INIT(0x2097, 10, 3, 43, 0x00000000U, "z10EC.3", "IBM System z10 EC GA3"), 75 CPUDEF_INIT(0x2098, 10, 3, 43, 0x00000000U, "z10BC.2", "IBM System z10 BC GA2"), 76 CPUDEF_INIT(0x2817, 11, 1, 44, 0x08000000U, "z196", "IBM zEnterprise 196 GA1"), 77 CPUDEF_INIT(0x2817, 11, 2, 44, 0x08000000U, "z196.2", "IBM zEnterprise 196 GA2"), 78 CPUDEF_INIT(0x2818, 11, 2, 44, 0x08000000U, "z114", "IBM zEnterprise 114 GA1"), 79 CPUDEF_INIT(0x2827, 12, 1, 44, 0x08000000U, "zEC12", "IBM zEnterprise EC12 GA1"), 80 CPUDEF_INIT(0x2827, 12, 2, 44, 0x08000000U, "zEC12.2", "IBM zEnterprise EC12 GA2"), 81 CPUDEF_INIT(0x2828, 12, 2, 44, 0x08000000U, "zBC12", "IBM zEnterprise BC12 GA1"), 82 CPUDEF_INIT(0x2964, 13, 1, 47, 0x08000000U, "z13", "IBM z13 GA1"), 83 CPUDEF_INIT(0x2964, 13, 2, 47, 0x08000000U, "z13.2", "IBM z13 GA2"), 84 CPUDEF_INIT(0x2965, 13, 2, 47, 0x08000000U, "z13s", "IBM z13s GA1"), 85 CPUDEF_INIT(0x3906, 14, 1, 47, 0x08000000U, "z14", "IBM z14 GA1"), 86 CPUDEF_INIT(0x3906, 14, 2, 47, 0x08000000U, "z14.2", "IBM z14 GA2"), 87 CPUDEF_INIT(0x3907, 14, 1, 47, 0x08000000U, "z14ZR1", "IBM z14 Model ZR1 GA1"), 88 CPUDEF_INIT(0x8561, 15, 1, 47, 0x08000000U, "gen15a", "IBM z15 GA1"), 89 CPUDEF_INIT(0x8562, 15, 1, 47, 0x08000000U, "gen15b", "IBM 8562 GA1"), 90 }; 91 92 #define QEMU_MAX_CPU_TYPE 0x2964 93 #define QEMU_MAX_CPU_GEN 13 94 #define QEMU_MAX_CPU_EC_GA 2 95 static const S390FeatInit qemu_max_cpu_feat_init = { S390_FEAT_LIST_QEMU_MAX }; 96 static S390FeatBitmap qemu_max_cpu_feat; 97 98 /* features part of a base model but not relevant for finding a base model */ 99 S390FeatBitmap ignored_base_feat; 100 101 void s390_cpudef_featoff(uint8_t gen, uint8_t ec_ga, S390Feat feat) 102 { 103 const S390CPUDef *def; 104 105 def = s390_find_cpu_def(0, gen, ec_ga, NULL); 106 clear_bit(feat, (unsigned long *)&def->default_feat); 107 } 108 109 void s390_cpudef_featoff_greater(uint8_t gen, uint8_t ec_ga, S390Feat feat) 110 { 111 int i; 112 113 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 114 const S390CPUDef *def = &s390_cpu_defs[i]; 115 116 if (def->gen < gen) { 117 continue; 118 } 119 if (def->gen == gen && def->ec_ga < ec_ga) { 120 continue; 121 } 122 123 clear_bit(feat, (unsigned long *)&def->default_feat); 124 } 125 } 126 127 void s390_cpudef_group_featoff_greater(uint8_t gen, uint8_t ec_ga, 128 S390FeatGroup group) 129 { 130 const S390FeatGroupDef *group_def = s390_feat_group_def(group); 131 S390FeatBitmap group_def_off; 132 int i; 133 134 bitmap_complement(group_def_off, group_def->feat, S390_FEAT_MAX); 135 136 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 137 const S390CPUDef *cpu_def = &s390_cpu_defs[i]; 138 139 if (cpu_def->gen < gen) { 140 continue; 141 } 142 if (cpu_def->gen == gen && cpu_def->ec_ga < ec_ga) { 143 continue; 144 } 145 146 bitmap_and((unsigned long *)&cpu_def->default_feat, 147 cpu_def->default_feat, group_def_off, S390_FEAT_MAX); 148 } 149 } 150 151 uint32_t s390_get_hmfai(void) 152 { 153 static S390CPU *cpu; 154 155 if (!cpu) { 156 cpu = S390_CPU(qemu_get_cpu(0)); 157 } 158 159 if (!cpu || !cpu->model) { 160 return 0; 161 } 162 return cpu->model->def->hmfai; 163 } 164 165 uint8_t s390_get_mha_pow(void) 166 { 167 static S390CPU *cpu; 168 169 if (!cpu) { 170 cpu = S390_CPU(qemu_get_cpu(0)); 171 } 172 173 if (!cpu || !cpu->model) { 174 return 0; 175 } 176 return cpu->model->def->mha_pow; 177 } 178 179 uint32_t s390_get_ibc_val(void) 180 { 181 uint16_t unblocked_ibc, lowest_ibc; 182 static S390CPU *cpu; 183 184 if (!cpu) { 185 cpu = S390_CPU(qemu_get_cpu(0)); 186 } 187 188 if (!cpu || !cpu->model) { 189 return 0; 190 } 191 unblocked_ibc = s390_ibc_from_cpu_model(cpu->model); 192 lowest_ibc = cpu->model->lowest_ibc; 193 /* the lowest_ibc always has to be <= unblocked_ibc */ 194 if (!lowest_ibc || lowest_ibc > unblocked_ibc) { 195 return 0; 196 } 197 return ((uint32_t) lowest_ibc << 16) | unblocked_ibc; 198 } 199 200 void s390_get_feat_block(S390FeatType type, uint8_t *data) 201 { 202 static S390CPU *cpu; 203 204 if (!cpu) { 205 cpu = S390_CPU(qemu_get_cpu(0)); 206 } 207 208 if (!cpu || !cpu->model) { 209 return; 210 } 211 s390_fill_feat_block(cpu->model->features, type, data); 212 } 213 214 bool s390_has_feat(S390Feat feat) 215 { 216 static S390CPU *cpu; 217 218 if (!cpu) { 219 cpu = S390_CPU(qemu_get_cpu(0)); 220 } 221 222 if (!cpu || !cpu->model) { 223 #ifdef CONFIG_KVM 224 if (kvm_enabled()) { 225 if (feat == S390_FEAT_VECTOR) { 226 return kvm_check_extension(kvm_state, 227 KVM_CAP_S390_VECTOR_REGISTERS); 228 } 229 if (feat == S390_FEAT_RUNTIME_INSTRUMENTATION) { 230 return kvm_s390_get_ri(); 231 } 232 if (feat == S390_FEAT_MSA_EXT_3) { 233 return true; 234 } 235 } 236 #endif 237 if (feat == S390_FEAT_ZPCI) { 238 return true; 239 } 240 return 0; 241 } 242 if (feat == S390_FEAT_DIAG_318 && s390_is_pv()) { 243 return false; 244 } 245 return test_bit(feat, cpu->model->features); 246 } 247 248 uint8_t s390_get_gen_for_cpu_type(uint16_t type) 249 { 250 int i; 251 252 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 253 if (s390_cpu_defs[i].type == type) { 254 return s390_cpu_defs[i].gen; 255 } 256 } 257 return 0; 258 } 259 260 const S390CPUDef *s390_find_cpu_def(uint16_t type, uint8_t gen, uint8_t ec_ga, 261 S390FeatBitmap features) 262 { 263 const S390CPUDef *last_compatible = NULL; 264 const S390CPUDef *matching_cpu_type = NULL; 265 int i; 266 267 if (!gen) { 268 ec_ga = 0; 269 } 270 if (!gen && type) { 271 gen = s390_get_gen_for_cpu_type(type); 272 } 273 274 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 275 const S390CPUDef *def = &s390_cpu_defs[i]; 276 S390FeatBitmap missing; 277 278 /* don't even try newer generations if we know the generation */ 279 if (gen) { 280 if (def->gen > gen) { 281 break; 282 } else if (def->gen == gen && ec_ga && def->ec_ga > ec_ga) { 283 break; 284 } 285 } 286 287 if (features) { 288 /* see if the model satisfies the minimum features */ 289 bitmap_andnot(missing, def->base_feat, features, S390_FEAT_MAX); 290 /* 291 * Ignore certain features that are in the base model, but not 292 * relevant for the search (esp. MSA subfunctions). 293 */ 294 bitmap_andnot(missing, missing, ignored_base_feat, S390_FEAT_MAX); 295 if (!bitmap_empty(missing, S390_FEAT_MAX)) { 296 break; 297 } 298 } 299 300 /* stop the search if we found the exact model */ 301 if (def->type == type && def->ec_ga == ec_ga) { 302 return def; 303 } 304 /* remember if we've at least seen one with the same cpu type */ 305 if (def->type == type) { 306 matching_cpu_type = def; 307 } 308 last_compatible = def; 309 } 310 /* prefer the model with the same cpu type, esp. don't take the BC for EC */ 311 if (matching_cpu_type) { 312 return matching_cpu_type; 313 } 314 return last_compatible; 315 } 316 317 static void s390_print_cpu_model_list_entry(gpointer data, gpointer user_data) 318 { 319 const S390CPUClass *scc = S390_CPU_CLASS((ObjectClass *)data); 320 char *name = g_strdup(object_class_get_name((ObjectClass *)data)); 321 const char *details = ""; 322 323 if (scc->is_static) { 324 details = "(static, migration-safe)"; 325 } else if (scc->is_migration_safe) { 326 details = "(migration-safe)"; 327 } 328 329 /* strip off the -s390x-cpu */ 330 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; 331 qemu_printf("s390 %-15s %-35s %s\n", name, scc->desc, details); 332 g_free(name); 333 } 334 335 static gint s390_cpu_list_compare(gconstpointer a, gconstpointer b) 336 { 337 const S390CPUClass *cc_a = S390_CPU_CLASS((ObjectClass *)a); 338 const S390CPUClass *cc_b = S390_CPU_CLASS((ObjectClass *)b); 339 const char *name_a = object_class_get_name((ObjectClass *)a); 340 const char *name_b = object_class_get_name((ObjectClass *)b); 341 342 /* 343 * Move qemu, host and max to the top of the list, qemu first, host second, 344 * max third. 345 */ 346 if (name_a[0] == 'q') { 347 return -1; 348 } else if (name_b[0] == 'q') { 349 return 1; 350 } else if (name_a[0] == 'h') { 351 return -1; 352 } else if (name_b[0] == 'h') { 353 return 1; 354 } else if (name_a[0] == 'm') { 355 return -1; 356 } else if (name_b[0] == 'm') { 357 return 1; 358 } 359 360 /* keep the same order we have in our table (sorted by release date) */ 361 if (cc_a->cpu_def != cc_b->cpu_def) { 362 return cc_a->cpu_def - cc_b->cpu_def; 363 } 364 365 /* exact same definition - list base model first */ 366 return cc_a->is_static ? -1 : 1; 367 } 368 369 void s390_cpu_list(void) 370 { 371 S390FeatGroup group; 372 S390Feat feat; 373 GSList *list; 374 375 list = object_class_get_list(TYPE_S390_CPU, false); 376 list = g_slist_sort(list, s390_cpu_list_compare); 377 g_slist_foreach(list, s390_print_cpu_model_list_entry, NULL); 378 g_slist_free(list); 379 380 qemu_printf("\nRecognized feature flags:\n"); 381 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 382 const S390FeatDef *def = s390_feat_def(feat); 383 384 qemu_printf("%-20s %-50s\n", def->name, def->desc); 385 } 386 387 qemu_printf("\nRecognized feature groups:\n"); 388 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 389 const S390FeatGroupDef *def = s390_feat_group_def(group); 390 391 qemu_printf("%-20s %-50s\n", def->name, def->desc); 392 } 393 } 394 395 static S390CPUModel *get_max_cpu_model(Error **errp); 396 397 #ifndef CONFIG_USER_ONLY 398 static void list_add_feat(const char *name, void *opaque); 399 400 static void check_unavailable_features(const S390CPUModel *max_model, 401 const S390CPUModel *model, 402 strList **unavailable) 403 { 404 S390FeatBitmap missing; 405 406 /* check general model compatibility */ 407 if (max_model->def->gen < model->def->gen || 408 (max_model->def->gen == model->def->gen && 409 max_model->def->ec_ga < model->def->ec_ga)) { 410 list_add_feat("type", unavailable); 411 } 412 413 /* detect missing features if any to properly report them */ 414 bitmap_andnot(missing, model->features, max_model->features, 415 S390_FEAT_MAX); 416 if (!bitmap_empty(missing, S390_FEAT_MAX)) { 417 s390_feat_bitmap_to_ascii(missing, unavailable, list_add_feat); 418 } 419 } 420 421 struct CpuDefinitionInfoListData { 422 CpuDefinitionInfoList *list; 423 S390CPUModel *model; 424 }; 425 426 static void create_cpu_model_list(ObjectClass *klass, void *opaque) 427 { 428 struct CpuDefinitionInfoListData *cpu_list_data = opaque; 429 CpuDefinitionInfoList **cpu_list = &cpu_list_data->list; 430 CpuDefinitionInfoList *entry; 431 CpuDefinitionInfo *info; 432 char *name = g_strdup(object_class_get_name(klass)); 433 S390CPUClass *scc = S390_CPU_CLASS(klass); 434 435 /* strip off the -s390x-cpu */ 436 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; 437 info = g_new0(CpuDefinitionInfo, 1); 438 info->name = name; 439 info->has_migration_safe = true; 440 info->migration_safe = scc->is_migration_safe; 441 info->q_static = scc->is_static; 442 info->q_typename = g_strdup(object_class_get_name(klass)); 443 /* check for unavailable features */ 444 if (cpu_list_data->model) { 445 Object *obj; 446 S390CPU *sc; 447 obj = object_new_with_class(klass); 448 sc = S390_CPU(obj); 449 if (sc->model) { 450 info->has_unavailable_features = true; 451 check_unavailable_features(cpu_list_data->model, sc->model, 452 &info->unavailable_features); 453 } 454 object_unref(obj); 455 } 456 457 entry = g_new0(CpuDefinitionInfoList, 1); 458 entry->value = info; 459 entry->next = *cpu_list; 460 *cpu_list = entry; 461 } 462 463 CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp) 464 { 465 struct CpuDefinitionInfoListData list_data = { 466 .list = NULL, 467 }; 468 469 list_data.model = get_max_cpu_model(NULL); 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 Error *err = NULL; 481 const QDict *qdict = NULL; 482 const QDictEntry *e; 483 Visitor *visitor; 484 ObjectClass *oc; 485 S390CPU *cpu; 486 Object *obj; 487 488 if (info->props) { 489 qdict = qobject_to(QDict, info->props); 490 if (!qdict) { 491 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict"); 492 return; 493 } 494 } 495 496 oc = cpu_class_by_name(TYPE_S390_CPU, info->name); 497 if (!oc) { 498 error_setg(errp, "The CPU definition \'%s\' is unknown.", info->name); 499 return; 500 } 501 if (S390_CPU_CLASS(oc)->kvm_required && !kvm_enabled()) { 502 error_setg(errp, "The CPU definition '%s' requires KVM", info->name); 503 return; 504 } 505 obj = object_new_with_class(oc); 506 cpu = S390_CPU(obj); 507 508 if (!cpu->model) { 509 error_setg(errp, "Details about the host CPU model are not available, " 510 "it cannot be used."); 511 object_unref(obj); 512 return; 513 } 514 515 if (qdict) { 516 visitor = qobject_input_visitor_new(info->props); 517 if (!visit_start_struct(visitor, NULL, NULL, 0, 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 if (!object_property_set(obj, e->key, visitor, &err)) { 524 break; 525 } 526 } 527 if (!err) { 528 visit_check_struct(visitor, &err); 529 } 530 visit_end_struct(visitor, NULL); 531 visit_free(visitor); 532 if (err) { 533 error_propagate(errp, err); 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 Error *err = NULL; 599 CpuModelExpansionInfo *expansion_info = NULL; 600 S390CPUModel s390_model; 601 bool delta_changes = false; 602 603 /* convert it to our internal representation */ 604 cpu_model_from_info(&s390_model, model, &err); 605 if (err) { 606 error_propagate(errp, err); 607 return NULL; 608 } 609 610 if (type == CPU_MODEL_EXPANSION_TYPE_STATIC) { 611 delta_changes = true; 612 } else if (type != CPU_MODEL_EXPANSION_TYPE_FULL) { 613 error_setg(errp, "The requested expansion type is not supported."); 614 return NULL; 615 } 616 617 /* convert it back to a static representation */ 618 expansion_info = g_new0(CpuModelExpansionInfo, 1); 619 expansion_info->model = g_malloc0(sizeof(*expansion_info->model)); 620 cpu_info_from_model(expansion_info->model, &s390_model, delta_changes); 621 return expansion_info; 622 } 623 624 static void list_add_feat(const char *name, void *opaque) 625 { 626 strList **last = (strList **) opaque; 627 strList *entry; 628 629 entry = g_new0(strList, 1); 630 entry->value = g_strdup(name); 631 entry->next = *last; 632 *last = entry; 633 } 634 635 CpuModelCompareInfo *qmp_query_cpu_model_comparison(CpuModelInfo *infoa, 636 CpuModelInfo *infob, 637 Error **errp) 638 { 639 Error *err = NULL; 640 CpuModelCompareResult feat_result, gen_result; 641 CpuModelCompareInfo *compare_info; 642 S390FeatBitmap missing, added; 643 S390CPUModel modela, modelb; 644 645 /* convert both models to our internal representation */ 646 cpu_model_from_info(&modela, infoa, &err); 647 if (err) { 648 error_propagate(errp, err); 649 return NULL; 650 } 651 cpu_model_from_info(&modelb, infob, &err); 652 if (err) { 653 error_propagate(errp, err); 654 return NULL; 655 } 656 compare_info = g_new0(CpuModelCompareInfo, 1); 657 658 /* check the cpu generation and ga level */ 659 if (modela.def->gen == modelb.def->gen) { 660 if (modela.def->ec_ga == modelb.def->ec_ga) { 661 /* ec and corresponding bc are identical */ 662 gen_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; 663 } else if (modela.def->ec_ga < modelb.def->ec_ga) { 664 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 665 } else { 666 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 667 } 668 } else if (modela.def->gen < modelb.def->gen) { 669 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 670 } else { 671 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 672 } 673 if (gen_result != CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 674 /* both models cannot be made identical */ 675 list_add_feat("type", &compare_info->responsible_properties); 676 } 677 678 /* check the feature set */ 679 if (bitmap_equal(modela.features, modelb.features, S390_FEAT_MAX)) { 680 feat_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; 681 } else { 682 bitmap_andnot(missing, modela.features, modelb.features, S390_FEAT_MAX); 683 s390_feat_bitmap_to_ascii(missing, 684 &compare_info->responsible_properties, 685 list_add_feat); 686 bitmap_andnot(added, modelb.features, modela.features, S390_FEAT_MAX); 687 s390_feat_bitmap_to_ascii(added, &compare_info->responsible_properties, 688 list_add_feat); 689 if (bitmap_empty(missing, S390_FEAT_MAX)) { 690 feat_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 691 } else if (bitmap_empty(added, S390_FEAT_MAX)) { 692 feat_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 693 } else { 694 feat_result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; 695 } 696 } 697 698 /* combine the results */ 699 if (gen_result == feat_result) { 700 compare_info->result = gen_result; 701 } else if (feat_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 702 compare_info->result = gen_result; 703 } else if (gen_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 704 compare_info->result = feat_result; 705 } else { 706 compare_info->result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; 707 } 708 return compare_info; 709 } 710 711 CpuModelBaselineInfo *qmp_query_cpu_model_baseline(CpuModelInfo *infoa, 712 CpuModelInfo *infob, 713 Error **errp) 714 { 715 Error *err = NULL; 716 CpuModelBaselineInfo *baseline_info; 717 S390CPUModel modela, modelb, model; 718 uint16_t cpu_type; 719 uint8_t max_gen_ga; 720 uint8_t max_gen; 721 722 /* convert both models to our internal representation */ 723 cpu_model_from_info(&modela, infoa, &err); 724 if (err) { 725 error_propagate(errp, err); 726 return NULL; 727 } 728 729 cpu_model_from_info(&modelb, infob, &err); 730 if (err) { 731 error_propagate(errp, err); 732 return NULL; 733 } 734 735 /* features both models support */ 736 bitmap_and(model.features, modela.features, modelb.features, S390_FEAT_MAX); 737 738 /* detect the maximum model not regarding features */ 739 if (modela.def->gen == modelb.def->gen) { 740 if (modela.def->type == modelb.def->type) { 741 cpu_type = modela.def->type; 742 } else { 743 cpu_type = 0; 744 } 745 max_gen = modela.def->gen; 746 max_gen_ga = MIN(modela.def->ec_ga, modelb.def->ec_ga); 747 } else if (modela.def->gen > modelb.def->gen) { 748 cpu_type = modelb.def->type; 749 max_gen = modelb.def->gen; 750 max_gen_ga = modelb.def->ec_ga; 751 } else { 752 cpu_type = modela.def->type; 753 max_gen = modela.def->gen; 754 max_gen_ga = modela.def->ec_ga; 755 } 756 757 model.def = s390_find_cpu_def(cpu_type, max_gen, max_gen_ga, 758 model.features); 759 760 /* models without early base features (esan3) are bad */ 761 if (!model.def) { 762 error_setg(errp, "No compatible CPU model could be created as" 763 " important base features are disabled"); 764 return NULL; 765 } 766 767 /* strip off features not part of the max model */ 768 bitmap_and(model.features, model.features, model.def->full_feat, 769 S390_FEAT_MAX); 770 771 baseline_info = g_new0(CpuModelBaselineInfo, 1); 772 baseline_info->model = g_malloc0(sizeof(*baseline_info->model)); 773 cpu_info_from_model(baseline_info->model, &model, true); 774 return baseline_info; 775 } 776 #endif 777 778 static void check_consistency(const S390CPUModel *model) 779 { 780 static int dep[][2] = { 781 { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH }, 782 { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH }, 783 { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH }, 784 { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT }, 785 { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH}, 786 { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT }, 787 { S390_FEAT_DFP_FAST, S390_FEAT_DFP }, 788 { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 }, 789 { S390_FEAT_EDAT_2, S390_FEAT_EDAT}, 790 { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 }, 791 { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 }, 792 { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 }, 793 { S390_FEAT_SIE_CMMA, S390_FEAT_CMM }, 794 { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS }, 795 { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT }, 796 { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 }, 797 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_3 }, 798 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_4 }, 799 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 800 { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR }, 801 { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR }, 802 { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 803 { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP }, 804 { S390_FEAT_CMM_NT, S390_FEAT_CMM }, 805 { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 806 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST }, 807 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 808 { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 }, 809 { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA }, 810 { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA }, 811 { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA }, 812 { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA }, 813 { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA }, 814 { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA }, 815 { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA }, 816 { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA }, 817 { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA }, 818 { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA }, 819 { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA }, 820 { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA }, 821 { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 }, 822 { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 }, 823 { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 }, 824 { S390_FEAT_AP_QUERY_CONFIG_INFO, S390_FEAT_AP }, 825 { S390_FEAT_AP_FACILITIES_TEST, S390_FEAT_AP }, 826 { S390_FEAT_PTFF_QSIE, S390_FEAT_MULTIPLE_EPOCH }, 827 { S390_FEAT_PTFF_QTOUE, S390_FEAT_MULTIPLE_EPOCH }, 828 { S390_FEAT_PTFF_STOE, S390_FEAT_MULTIPLE_EPOCH }, 829 { S390_FEAT_PTFF_STOUE, S390_FEAT_MULTIPLE_EPOCH }, 830 { S390_FEAT_AP_QUEUE_INTERRUPT_CONTROL, S390_FEAT_AP }, 831 { S390_FEAT_DIAG_318, S390_FEAT_EXTENDED_LENGTH_SCCB }, 832 }; 833 int i; 834 835 for (i = 0; i < ARRAY_SIZE(dep); i++) { 836 if (test_bit(dep[i][0], model->features) && 837 !test_bit(dep[i][1], model->features)) { 838 warn_report("\'%s\' requires \'%s\'.", 839 s390_feat_def(dep[i][0])->name, 840 s390_feat_def(dep[i][1])->name); 841 } 842 } 843 } 844 845 static void error_prepend_missing_feat(const char *name, void *opaque) 846 { 847 error_prepend((Error **) opaque, "%s ", name); 848 } 849 850 static void check_compatibility(const S390CPUModel *max_model, 851 const S390CPUModel *model, Error **errp) 852 { 853 S390FeatBitmap missing; 854 855 if (model->def->gen > max_model->def->gen) { 856 error_setg(errp, "Selected CPU generation is too new. Maximum " 857 "supported model in the configuration: \'%s\'", 858 max_model->def->name); 859 return; 860 } else if (model->def->gen == max_model->def->gen && 861 model->def->ec_ga > max_model->def->ec_ga) { 862 error_setg(errp, "Selected CPU GA level is too new. Maximum " 863 "supported model in the configuration: \'%s\'", 864 max_model->def->name); 865 return; 866 } 867 868 /* detect the missing features to properly report them */ 869 bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX); 870 if (bitmap_empty(missing, S390_FEAT_MAX)) { 871 return; 872 } 873 874 error_setg(errp, " "); 875 s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat); 876 error_prepend(errp, "Some features requested in the CPU model are not " 877 "available in the configuration: "); 878 } 879 880 static S390CPUModel *get_max_cpu_model(Error **errp) 881 { 882 Error *err = NULL; 883 static S390CPUModel max_model; 884 static bool cached; 885 886 if (cached) { 887 return &max_model; 888 } 889 890 if (kvm_enabled()) { 891 kvm_s390_get_host_cpu_model(&max_model, &err); 892 } else { 893 max_model.def = s390_find_cpu_def(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 894 QEMU_MAX_CPU_EC_GA, NULL); 895 bitmap_copy(max_model.features, qemu_max_cpu_feat, S390_FEAT_MAX); 896 } 897 if (err) { 898 error_propagate(errp, err); 899 return NULL; 900 } 901 cached = true; 902 return &max_model; 903 } 904 905 static inline void apply_cpu_model(const S390CPUModel *model, Error **errp) 906 { 907 #ifndef CONFIG_USER_ONLY 908 Error *err = NULL; 909 static S390CPUModel applied_model; 910 static bool applied; 911 912 /* 913 * We have the same model for all VCPUs. KVM can only be configured before 914 * any VCPUs are defined in KVM. 915 */ 916 if (applied) { 917 if (model && memcmp(&applied_model, model, sizeof(S390CPUModel))) { 918 error_setg(errp, "Mixed CPU models are not supported on s390x."); 919 } 920 return; 921 } 922 923 if (kvm_enabled()) { 924 kvm_s390_apply_cpu_model(model, &err); 925 if (err) { 926 error_propagate(errp, err); 927 return; 928 } 929 } 930 931 applied = true; 932 if (model) { 933 applied_model = *model; 934 } 935 #endif 936 } 937 938 void s390_realize_cpu_model(CPUState *cs, Error **errp) 939 { 940 Error *err = NULL; 941 S390CPUClass *xcc = S390_CPU_GET_CLASS(cs); 942 S390CPU *cpu = S390_CPU(cs); 943 const S390CPUModel *max_model; 944 945 if (xcc->kvm_required && !kvm_enabled()) { 946 error_setg(errp, "CPU definition requires KVM"); 947 return; 948 } 949 950 if (!cpu->model) { 951 /* no host model support -> perform compatibility stuff */ 952 apply_cpu_model(NULL, errp); 953 return; 954 } 955 956 max_model = get_max_cpu_model(errp); 957 if (!max_model) { 958 error_prepend(errp, "CPU models are not available: "); 959 return; 960 } 961 962 /* copy over properties that can vary */ 963 cpu->model->lowest_ibc = max_model->lowest_ibc; 964 cpu->model->cpu_id = max_model->cpu_id; 965 cpu->model->cpu_id_format = max_model->cpu_id_format; 966 cpu->model->cpu_ver = max_model->cpu_ver; 967 968 check_consistency(cpu->model); 969 check_compatibility(max_model, cpu->model, &err); 970 if (err) { 971 error_propagate(errp, err); 972 return; 973 } 974 975 apply_cpu_model(cpu->model, errp); 976 977 #if !defined(CONFIG_USER_ONLY) 978 cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model); 979 if (tcg_enabled()) { 980 /* basic mode, write the cpu address into the first 4 bit of the ID */ 981 cpu->env.cpuid = deposit64(cpu->env.cpuid, 54, 4, cpu->env.core_id); 982 } 983 #endif 984 } 985 986 static void get_feature(Object *obj, Visitor *v, const char *name, 987 void *opaque, Error **errp) 988 { 989 S390Feat feat = (S390Feat) (uintptr_t) opaque; 990 S390CPU *cpu = S390_CPU(obj); 991 bool value; 992 993 if (!cpu->model) { 994 error_setg(errp, "Details about the host CPU model are not available, " 995 "features cannot be queried."); 996 return; 997 } 998 999 value = test_bit(feat, cpu->model->features); 1000 visit_type_bool(v, name, &value, errp); 1001 } 1002 1003 static void set_feature(Object *obj, Visitor *v, const char *name, 1004 void *opaque, Error **errp) 1005 { 1006 S390Feat feat = (S390Feat) (uintptr_t) opaque; 1007 DeviceState *dev = DEVICE(obj); 1008 S390CPU *cpu = S390_CPU(obj); 1009 bool value; 1010 1011 if (dev->realized) { 1012 error_setg(errp, "Attempt to set property '%s' on '%s' after " 1013 "it was realized", name, object_get_typename(obj)); 1014 return; 1015 } else if (!cpu->model) { 1016 error_setg(errp, "Details about the host CPU model are not available, " 1017 "features cannot be changed."); 1018 return; 1019 } 1020 1021 if (!visit_type_bool(v, name, &value, errp)) { 1022 return; 1023 } 1024 if (value) { 1025 if (!test_bit(feat, cpu->model->def->full_feat)) { 1026 error_setg(errp, "Feature '%s' is not available for CPU model '%s'," 1027 " it was introduced with later models.", 1028 name, cpu->model->def->name); 1029 return; 1030 } 1031 set_bit(feat, cpu->model->features); 1032 } else { 1033 clear_bit(feat, cpu->model->features); 1034 } 1035 } 1036 1037 static void get_feature_group(Object *obj, Visitor *v, const char *name, 1038 void *opaque, Error **errp) 1039 { 1040 S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque; 1041 const S390FeatGroupDef *def = s390_feat_group_def(group); 1042 S390CPU *cpu = S390_CPU(obj); 1043 S390FeatBitmap tmp; 1044 bool value; 1045 1046 if (!cpu->model) { 1047 error_setg(errp, "Details about the host CPU model are not available, " 1048 "features cannot be queried."); 1049 return; 1050 } 1051 1052 /* a group is enabled if all features are enabled */ 1053 bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX); 1054 value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX); 1055 visit_type_bool(v, name, &value, errp); 1056 } 1057 1058 static void set_feature_group(Object *obj, Visitor *v, const char *name, 1059 void *opaque, Error **errp) 1060 { 1061 S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque; 1062 const S390FeatGroupDef *def = s390_feat_group_def(group); 1063 DeviceState *dev = DEVICE(obj); 1064 S390CPU *cpu = S390_CPU(obj); 1065 bool value; 1066 1067 if (dev->realized) { 1068 error_setg(errp, "Attempt to set property '%s' on '%s' after " 1069 "it was realized", name, object_get_typename(obj)); 1070 return; 1071 } else if (!cpu->model) { 1072 error_setg(errp, "Details about the host CPU model are not available, " 1073 "features cannot be changed."); 1074 return; 1075 } 1076 1077 if (!visit_type_bool(v, name, &value, errp)) { 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 static void s390_cpu_model_initfn(Object *obj) 1098 { 1099 S390CPU *cpu = S390_CPU(obj); 1100 S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu); 1101 1102 cpu->model = g_malloc0(sizeof(*cpu->model)); 1103 /* copy the model, so we can modify it */ 1104 cpu->model->def = xcc->cpu_def; 1105 if (xcc->is_static) { 1106 /* base model - features will never change */ 1107 bitmap_copy(cpu->model->features, cpu->model->def->base_feat, 1108 S390_FEAT_MAX); 1109 } else { 1110 /* latest model - features can change */ 1111 bitmap_copy(cpu->model->features, 1112 cpu->model->def->default_feat, S390_FEAT_MAX); 1113 } 1114 } 1115 1116 static S390CPUDef s390_qemu_cpu_def; 1117 static S390CPUModel s390_qemu_cpu_model; 1118 1119 /* Set the qemu CPU model (on machine initialization). Must not be called 1120 * once CPUs have been created. 1121 */ 1122 void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga, 1123 const S390FeatInit feat_init) 1124 { 1125 const S390CPUDef *def = s390_find_cpu_def(type, gen, ec_ga, NULL); 1126 1127 g_assert(def); 1128 g_assert(QTAILQ_EMPTY_RCU(&cpus)); 1129 1130 /* TCG emulates some features that can usually not be enabled with 1131 * the emulated machine generation. Make sure they can be enabled 1132 * when using the QEMU model by adding them to full_feat. We have 1133 * to copy the definition to do that. 1134 */ 1135 memcpy(&s390_qemu_cpu_def, def, sizeof(s390_qemu_cpu_def)); 1136 bitmap_or(s390_qemu_cpu_def.full_feat, s390_qemu_cpu_def.full_feat, 1137 qemu_max_cpu_feat, S390_FEAT_MAX); 1138 1139 /* build the CPU model */ 1140 s390_qemu_cpu_model.def = &s390_qemu_cpu_def; 1141 bitmap_zero(s390_qemu_cpu_model.features, S390_FEAT_MAX); 1142 s390_init_feat_bitmap(feat_init, s390_qemu_cpu_model.features); 1143 } 1144 1145 static void s390_qemu_cpu_model_initfn(Object *obj) 1146 { 1147 S390CPU *cpu = S390_CPU(obj); 1148 1149 cpu->model = g_malloc0(sizeof(*cpu->model)); 1150 /* copy the CPU model so we can modify it */ 1151 memcpy(cpu->model, &s390_qemu_cpu_model, sizeof(*cpu->model)); 1152 } 1153 1154 static void s390_max_cpu_model_initfn(Object *obj) 1155 { 1156 const S390CPUModel *max_model; 1157 S390CPU *cpu = S390_CPU(obj); 1158 Error *local_err = NULL; 1159 1160 if (kvm_enabled() && !kvm_s390_cpu_models_supported()) { 1161 /* "max" and "host" always work, even without CPU model support */ 1162 return; 1163 } 1164 1165 max_model = get_max_cpu_model(&local_err); 1166 if (local_err) { 1167 /* we expect errors only under KVM, when actually querying the kernel */ 1168 g_assert(kvm_enabled()); 1169 error_report_err(local_err); 1170 /* fallback to unsupported CPU models */ 1171 return; 1172 } 1173 1174 cpu->model = g_new(S390CPUModel, 1); 1175 /* copy the CPU model so we can modify it */ 1176 memcpy(cpu->model, max_model, sizeof(*cpu->model)); 1177 } 1178 1179 static void s390_cpu_model_finalize(Object *obj) 1180 { 1181 S390CPU *cpu = S390_CPU(obj); 1182 1183 g_free(cpu->model); 1184 cpu->model = NULL; 1185 } 1186 1187 static bool get_is_migration_safe(Object *obj, Error **errp) 1188 { 1189 return S390_CPU_GET_CLASS(obj)->is_migration_safe; 1190 } 1191 1192 static bool get_is_static(Object *obj, Error **errp) 1193 { 1194 return S390_CPU_GET_CLASS(obj)->is_static; 1195 } 1196 1197 static char *get_description(Object *obj, Error **errp) 1198 { 1199 return g_strdup(S390_CPU_GET_CLASS(obj)->desc); 1200 } 1201 1202 void s390_cpu_model_class_register_props(ObjectClass *oc) 1203 { 1204 S390FeatGroup group; 1205 S390Feat feat; 1206 1207 object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe, 1208 NULL); 1209 object_class_property_add_bool(oc, "static", get_is_static, 1210 NULL); 1211 object_class_property_add_str(oc, "description", get_description, NULL); 1212 1213 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 1214 const S390FeatDef *def = s390_feat_def(feat); 1215 object_class_property_add(oc, def->name, "bool", get_feature, 1216 set_feature, NULL, (void *) feat); 1217 object_class_property_set_description(oc, def->name, def->desc); 1218 } 1219 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 1220 const S390FeatGroupDef *def = s390_feat_group_def(group); 1221 object_class_property_add(oc, def->name, "bool", get_feature_group, 1222 set_feature_group, NULL, (void *) group); 1223 object_class_property_set_description(oc, def->name, def->desc); 1224 } 1225 } 1226 1227 #ifdef CONFIG_KVM 1228 static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data) 1229 { 1230 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1231 1232 xcc->kvm_required = true; 1233 xcc->desc = "KVM only: All recognized features"; 1234 } 1235 #endif 1236 1237 static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data) 1238 { 1239 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1240 1241 /* all base models are migration safe */ 1242 xcc->cpu_def = (const S390CPUDef *) data; 1243 xcc->is_migration_safe = true; 1244 xcc->is_static = true; 1245 xcc->desc = xcc->cpu_def->desc; 1246 } 1247 1248 static void s390_cpu_model_class_init(ObjectClass *oc, void *data) 1249 { 1250 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1251 1252 /* model that can change between QEMU versions */ 1253 xcc->cpu_def = (const S390CPUDef *) data; 1254 xcc->is_migration_safe = true; 1255 xcc->desc = xcc->cpu_def->desc; 1256 } 1257 1258 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data) 1259 { 1260 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1261 1262 xcc->is_migration_safe = true; 1263 xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s", 1264 qemu_hw_version()); 1265 } 1266 1267 static void s390_max_cpu_model_class_init(ObjectClass *oc, void *data) 1268 { 1269 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1270 1271 /* 1272 * The "max" model is neither static nor migration safe. Under KVM 1273 * it represents the "host" model. Under TCG it represents some kind of 1274 * "qemu" CPU model without compat handling and maybe with some additional 1275 * CPU features that are not yet unlocked in the "qemu" model. 1276 */ 1277 xcc->desc = 1278 "Enables all features supported by the accelerator in the current host"; 1279 } 1280 1281 /* Generate type name for a cpu model. Caller has to free the string. */ 1282 static char *s390_cpu_type_name(const char *model_name) 1283 { 1284 return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name); 1285 } 1286 1287 /* Generate type name for a base cpu model. Caller has to free the string. */ 1288 static char *s390_base_cpu_type_name(const char *model_name) 1289 { 1290 return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name); 1291 } 1292 1293 ObjectClass *s390_cpu_class_by_name(const char *name) 1294 { 1295 char *typename = s390_cpu_type_name(name); 1296 ObjectClass *oc; 1297 1298 oc = object_class_by_name(typename); 1299 g_free(typename); 1300 return oc; 1301 } 1302 1303 static const TypeInfo qemu_s390_cpu_type_info = { 1304 .name = S390_CPU_TYPE_NAME("qemu"), 1305 .parent = TYPE_S390_CPU, 1306 .instance_init = s390_qemu_cpu_model_initfn, 1307 .instance_finalize = s390_cpu_model_finalize, 1308 .class_init = s390_qemu_cpu_model_class_init, 1309 }; 1310 1311 static const TypeInfo max_s390_cpu_type_info = { 1312 .name = S390_CPU_TYPE_NAME("max"), 1313 .parent = TYPE_S390_CPU, 1314 .instance_init = s390_max_cpu_model_initfn, 1315 .instance_finalize = s390_cpu_model_finalize, 1316 .class_init = s390_max_cpu_model_class_init, 1317 }; 1318 1319 #ifdef CONFIG_KVM 1320 static const TypeInfo host_s390_cpu_type_info = { 1321 .name = S390_CPU_TYPE_NAME("host"), 1322 .parent = S390_CPU_TYPE_NAME("max"), 1323 .class_init = s390_host_cpu_model_class_init, 1324 }; 1325 #endif 1326 1327 static void init_ignored_base_feat(void) 1328 { 1329 static const int feats[] = { 1330 /* MSA subfunctions that could not be available on certain machines */ 1331 S390_FEAT_KMAC_DEA, 1332 S390_FEAT_KMAC_TDEA_128, 1333 S390_FEAT_KMAC_TDEA_192, 1334 S390_FEAT_KMC_DEA, 1335 S390_FEAT_KMC_TDEA_128, 1336 S390_FEAT_KMC_TDEA_192, 1337 S390_FEAT_KM_DEA, 1338 S390_FEAT_KM_TDEA_128, 1339 S390_FEAT_KM_TDEA_192, 1340 S390_FEAT_KIMD_SHA_1, 1341 S390_FEAT_KLMD_SHA_1, 1342 /* CSSKE is deprecated on newer generations */ 1343 S390_FEAT_CONDITIONAL_SSKE, 1344 }; 1345 int i; 1346 1347 for (i = 0; i < ARRAY_SIZE(feats); i++) { 1348 set_bit(feats[i], ignored_base_feat); 1349 } 1350 } 1351 1352 static void register_types(void) 1353 { 1354 static const S390FeatInit qemu_latest_init = { S390_FEAT_LIST_QEMU_LATEST }; 1355 int i; 1356 1357 init_ignored_base_feat(); 1358 1359 /* init all bitmaps from gnerated data initially */ 1360 s390_init_feat_bitmap(qemu_max_cpu_feat_init, qemu_max_cpu_feat); 1361 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 1362 s390_init_feat_bitmap(s390_cpu_defs[i].base_init, 1363 s390_cpu_defs[i].base_feat); 1364 s390_init_feat_bitmap(s390_cpu_defs[i].default_init, 1365 s390_cpu_defs[i].default_feat); 1366 s390_init_feat_bitmap(s390_cpu_defs[i].full_init, 1367 s390_cpu_defs[i].full_feat); 1368 } 1369 1370 /* initialize the qemu model with latest definition */ 1371 s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 1372 QEMU_MAX_CPU_EC_GA, qemu_latest_init); 1373 1374 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 1375 char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name); 1376 TypeInfo ti_base = { 1377 .name = base_name, 1378 .parent = TYPE_S390_CPU, 1379 .instance_init = s390_cpu_model_initfn, 1380 .instance_finalize = s390_cpu_model_finalize, 1381 .class_init = s390_base_cpu_model_class_init, 1382 .class_data = (void *) &s390_cpu_defs[i], 1383 }; 1384 char *name = s390_cpu_type_name(s390_cpu_defs[i].name); 1385 TypeInfo ti = { 1386 .name = name, 1387 .parent = TYPE_S390_CPU, 1388 .instance_init = s390_cpu_model_initfn, 1389 .instance_finalize = s390_cpu_model_finalize, 1390 .class_init = s390_cpu_model_class_init, 1391 .class_data = (void *) &s390_cpu_defs[i], 1392 }; 1393 1394 type_register_static(&ti_base); 1395 type_register_static(&ti); 1396 g_free(base_name); 1397 g_free(name); 1398 } 1399 1400 type_register_static(&qemu_s390_cpu_type_info); 1401 type_register_static(&max_s390_cpu_type_info); 1402 #ifdef CONFIG_KVM 1403 type_register_static(&host_s390_cpu_type_info); 1404 #endif 1405 } 1406 1407 type_init(register_types) 1408