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 } 242 243 if (s390_is_pv()) { 244 switch (feat) { 245 case S390_FEAT_DIAG_318: 246 case S390_FEAT_HPMA2: 247 case S390_FEAT_SIE_F2: 248 case S390_FEAT_SIE_SKEY: 249 case S390_FEAT_SIE_GPERE: 250 case S390_FEAT_SIE_SIIF: 251 case S390_FEAT_SIE_SIGPIF: 252 case S390_FEAT_SIE_IB: 253 case S390_FEAT_SIE_CEI: 254 case S390_FEAT_SIE_KSS: 255 case S390_FEAT_SIE_GSLS: 256 case S390_FEAT_SIE_64BSCAO: 257 case S390_FEAT_SIE_CMMA: 258 case S390_FEAT_SIE_PFMFI: 259 case S390_FEAT_SIE_IBS: 260 return false; 261 break; 262 default: 263 break; 264 } 265 } 266 return test_bit(feat, cpu->model->features); 267 } 268 269 uint8_t s390_get_gen_for_cpu_type(uint16_t type) 270 { 271 int i; 272 273 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 274 if (s390_cpu_defs[i].type == type) { 275 return s390_cpu_defs[i].gen; 276 } 277 } 278 return 0; 279 } 280 281 const S390CPUDef *s390_find_cpu_def(uint16_t type, uint8_t gen, uint8_t ec_ga, 282 S390FeatBitmap features) 283 { 284 const S390CPUDef *last_compatible = NULL; 285 const S390CPUDef *matching_cpu_type = NULL; 286 int i; 287 288 if (!gen) { 289 ec_ga = 0; 290 } 291 if (!gen && type) { 292 gen = s390_get_gen_for_cpu_type(type); 293 } 294 295 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 296 const S390CPUDef *def = &s390_cpu_defs[i]; 297 S390FeatBitmap missing; 298 299 /* don't even try newer generations if we know the generation */ 300 if (gen) { 301 if (def->gen > gen) { 302 break; 303 } else if (def->gen == gen && ec_ga && def->ec_ga > ec_ga) { 304 break; 305 } 306 } 307 308 if (features) { 309 /* see if the model satisfies the minimum features */ 310 bitmap_andnot(missing, def->base_feat, features, S390_FEAT_MAX); 311 /* 312 * Ignore certain features that are in the base model, but not 313 * relevant for the search (esp. MSA subfunctions). 314 */ 315 bitmap_andnot(missing, missing, ignored_base_feat, S390_FEAT_MAX); 316 if (!bitmap_empty(missing, S390_FEAT_MAX)) { 317 break; 318 } 319 } 320 321 /* stop the search if we found the exact model */ 322 if (def->type == type && def->ec_ga == ec_ga) { 323 return def; 324 } 325 /* remember if we've at least seen one with the same cpu type */ 326 if (def->type == type) { 327 matching_cpu_type = def; 328 } 329 last_compatible = def; 330 } 331 /* prefer the model with the same cpu type, esp. don't take the BC for EC */ 332 if (matching_cpu_type) { 333 return matching_cpu_type; 334 } 335 return last_compatible; 336 } 337 338 static void s390_print_cpu_model_list_entry(gpointer data, gpointer user_data) 339 { 340 const S390CPUClass *scc = S390_CPU_CLASS((ObjectClass *)data); 341 char *name = g_strdup(object_class_get_name((ObjectClass *)data)); 342 const char *details = ""; 343 344 if (scc->is_static) { 345 details = "(static, migration-safe)"; 346 } else if (scc->is_migration_safe) { 347 details = "(migration-safe)"; 348 } 349 350 /* strip off the -s390x-cpu */ 351 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; 352 qemu_printf("s390 %-15s %-35s %s\n", name, scc->desc, details); 353 g_free(name); 354 } 355 356 static gint s390_cpu_list_compare(gconstpointer a, gconstpointer b) 357 { 358 const S390CPUClass *cc_a = S390_CPU_CLASS((ObjectClass *)a); 359 const S390CPUClass *cc_b = S390_CPU_CLASS((ObjectClass *)b); 360 const char *name_a = object_class_get_name((ObjectClass *)a); 361 const char *name_b = object_class_get_name((ObjectClass *)b); 362 363 /* 364 * Move qemu, host and max to the top of the list, qemu first, host second, 365 * max third. 366 */ 367 if (name_a[0] == 'q') { 368 return -1; 369 } else if (name_b[0] == 'q') { 370 return 1; 371 } else if (name_a[0] == 'h') { 372 return -1; 373 } else if (name_b[0] == 'h') { 374 return 1; 375 } else if (name_a[0] == 'm') { 376 return -1; 377 } else if (name_b[0] == 'm') { 378 return 1; 379 } 380 381 /* keep the same order we have in our table (sorted by release date) */ 382 if (cc_a->cpu_def != cc_b->cpu_def) { 383 return cc_a->cpu_def - cc_b->cpu_def; 384 } 385 386 /* exact same definition - list base model first */ 387 return cc_a->is_static ? -1 : 1; 388 } 389 390 void s390_cpu_list(void) 391 { 392 S390FeatGroup group; 393 S390Feat feat; 394 GSList *list; 395 396 list = object_class_get_list(TYPE_S390_CPU, false); 397 list = g_slist_sort(list, s390_cpu_list_compare); 398 g_slist_foreach(list, s390_print_cpu_model_list_entry, NULL); 399 g_slist_free(list); 400 401 qemu_printf("\nRecognized feature flags:\n"); 402 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 403 const S390FeatDef *def = s390_feat_def(feat); 404 405 qemu_printf("%-20s %-50s\n", def->name, def->desc); 406 } 407 408 qemu_printf("\nRecognized feature groups:\n"); 409 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 410 const S390FeatGroupDef *def = s390_feat_group_def(group); 411 412 qemu_printf("%-20s %-50s\n", def->name, def->desc); 413 } 414 } 415 416 static S390CPUModel *get_max_cpu_model(Error **errp); 417 418 #ifndef CONFIG_USER_ONLY 419 static void list_add_feat(const char *name, void *opaque); 420 421 static void check_unavailable_features(const S390CPUModel *max_model, 422 const S390CPUModel *model, 423 strList **unavailable) 424 { 425 S390FeatBitmap missing; 426 427 /* check general model compatibility */ 428 if (max_model->def->gen < model->def->gen || 429 (max_model->def->gen == model->def->gen && 430 max_model->def->ec_ga < model->def->ec_ga)) { 431 list_add_feat("type", unavailable); 432 } 433 434 /* detect missing features if any to properly report them */ 435 bitmap_andnot(missing, model->features, max_model->features, 436 S390_FEAT_MAX); 437 if (!bitmap_empty(missing, S390_FEAT_MAX)) { 438 s390_feat_bitmap_to_ascii(missing, unavailable, list_add_feat); 439 } 440 } 441 442 struct CpuDefinitionInfoListData { 443 CpuDefinitionInfoList *list; 444 S390CPUModel *model; 445 }; 446 447 static void create_cpu_model_list(ObjectClass *klass, void *opaque) 448 { 449 struct CpuDefinitionInfoListData *cpu_list_data = opaque; 450 CpuDefinitionInfoList **cpu_list = &cpu_list_data->list; 451 CpuDefinitionInfoList *entry; 452 CpuDefinitionInfo *info; 453 char *name = g_strdup(object_class_get_name(klass)); 454 S390CPUClass *scc = S390_CPU_CLASS(klass); 455 456 /* strip off the -s390x-cpu */ 457 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; 458 info = g_new0(CpuDefinitionInfo, 1); 459 info->name = name; 460 info->has_migration_safe = true; 461 info->migration_safe = scc->is_migration_safe; 462 info->q_static = scc->is_static; 463 info->q_typename = g_strdup(object_class_get_name(klass)); 464 /* check for unavailable features */ 465 if (cpu_list_data->model) { 466 Object *obj; 467 S390CPU *sc; 468 obj = object_new_with_class(klass); 469 sc = S390_CPU(obj); 470 if (sc->model) { 471 info->has_unavailable_features = true; 472 check_unavailable_features(cpu_list_data->model, sc->model, 473 &info->unavailable_features); 474 } 475 object_unref(obj); 476 } 477 478 entry = g_new0(CpuDefinitionInfoList, 1); 479 entry->value = info; 480 entry->next = *cpu_list; 481 *cpu_list = entry; 482 } 483 484 CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp) 485 { 486 struct CpuDefinitionInfoListData list_data = { 487 .list = NULL, 488 }; 489 490 list_data.model = get_max_cpu_model(NULL); 491 492 object_class_foreach(create_cpu_model_list, TYPE_S390_CPU, false, 493 &list_data); 494 495 return list_data.list; 496 } 497 498 static void cpu_model_from_info(S390CPUModel *model, const CpuModelInfo *info, 499 Error **errp) 500 { 501 Error *err = NULL; 502 const QDict *qdict = NULL; 503 const QDictEntry *e; 504 Visitor *visitor; 505 ObjectClass *oc; 506 S390CPU *cpu; 507 Object *obj; 508 509 if (info->props) { 510 qdict = qobject_to(QDict, info->props); 511 if (!qdict) { 512 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict"); 513 return; 514 } 515 } 516 517 oc = cpu_class_by_name(TYPE_S390_CPU, info->name); 518 if (!oc) { 519 error_setg(errp, "The CPU definition \'%s\' is unknown.", info->name); 520 return; 521 } 522 if (S390_CPU_CLASS(oc)->kvm_required && !kvm_enabled()) { 523 error_setg(errp, "The CPU definition '%s' requires KVM", info->name); 524 return; 525 } 526 obj = object_new_with_class(oc); 527 cpu = S390_CPU(obj); 528 529 if (!cpu->model) { 530 error_setg(errp, "Details about the host CPU model are not available, " 531 "it cannot be used."); 532 object_unref(obj); 533 return; 534 } 535 536 if (qdict) { 537 visitor = qobject_input_visitor_new(info->props); 538 if (!visit_start_struct(visitor, NULL, NULL, 0, errp)) { 539 visit_free(visitor); 540 object_unref(obj); 541 return; 542 } 543 for (e = qdict_first(qdict); e; e = qdict_next(qdict, e)) { 544 if (!object_property_set(obj, e->key, visitor, &err)) { 545 break; 546 } 547 } 548 if (!err) { 549 visit_check_struct(visitor, &err); 550 } 551 visit_end_struct(visitor, NULL); 552 visit_free(visitor); 553 if (err) { 554 error_propagate(errp, err); 555 object_unref(obj); 556 return; 557 } 558 } 559 560 /* copy the model and throw the cpu away */ 561 memcpy(model, cpu->model, sizeof(*model)); 562 object_unref(obj); 563 } 564 565 static void qdict_add_disabled_feat(const char *name, void *opaque) 566 { 567 qdict_put_bool(opaque, name, false); 568 } 569 570 static void qdict_add_enabled_feat(const char *name, void *opaque) 571 { 572 qdict_put_bool(opaque, name, true); 573 } 574 575 /* convert S390CPUDef into a static CpuModelInfo */ 576 static void cpu_info_from_model(CpuModelInfo *info, const S390CPUModel *model, 577 bool delta_changes) 578 { 579 QDict *qdict = qdict_new(); 580 S390FeatBitmap bitmap; 581 582 /* always fallback to the static base model */ 583 info->name = g_strdup_printf("%s-base", model->def->name); 584 585 if (delta_changes) { 586 /* features deleted from the base feature set */ 587 bitmap_andnot(bitmap, model->def->base_feat, model->features, 588 S390_FEAT_MAX); 589 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) { 590 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat); 591 } 592 593 /* features added to the base feature set */ 594 bitmap_andnot(bitmap, model->features, model->def->base_feat, 595 S390_FEAT_MAX); 596 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) { 597 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_enabled_feat); 598 } 599 } else { 600 /* expand all features */ 601 s390_feat_bitmap_to_ascii(model->features, qdict, 602 qdict_add_enabled_feat); 603 bitmap_complement(bitmap, model->features, S390_FEAT_MAX); 604 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat); 605 } 606 607 if (!qdict_size(qdict)) { 608 qobject_unref(qdict); 609 } else { 610 info->props = QOBJECT(qdict); 611 info->has_props = true; 612 } 613 } 614 615 CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type, 616 CpuModelInfo *model, 617 Error **errp) 618 { 619 Error *err = NULL; 620 CpuModelExpansionInfo *expansion_info = NULL; 621 S390CPUModel s390_model; 622 bool delta_changes = false; 623 624 /* convert it to our internal representation */ 625 cpu_model_from_info(&s390_model, model, &err); 626 if (err) { 627 error_propagate(errp, err); 628 return NULL; 629 } 630 631 if (type == CPU_MODEL_EXPANSION_TYPE_STATIC) { 632 delta_changes = true; 633 } else if (type != CPU_MODEL_EXPANSION_TYPE_FULL) { 634 error_setg(errp, "The requested expansion type is not supported."); 635 return NULL; 636 } 637 638 /* convert it back to a static representation */ 639 expansion_info = g_new0(CpuModelExpansionInfo, 1); 640 expansion_info->model = g_malloc0(sizeof(*expansion_info->model)); 641 cpu_info_from_model(expansion_info->model, &s390_model, delta_changes); 642 return expansion_info; 643 } 644 645 static void list_add_feat(const char *name, void *opaque) 646 { 647 strList **last = (strList **) opaque; 648 strList *entry; 649 650 entry = g_new0(strList, 1); 651 entry->value = g_strdup(name); 652 entry->next = *last; 653 *last = entry; 654 } 655 656 CpuModelCompareInfo *qmp_query_cpu_model_comparison(CpuModelInfo *infoa, 657 CpuModelInfo *infob, 658 Error **errp) 659 { 660 Error *err = NULL; 661 CpuModelCompareResult feat_result, gen_result; 662 CpuModelCompareInfo *compare_info; 663 S390FeatBitmap missing, added; 664 S390CPUModel modela, modelb; 665 666 /* convert both models to our internal representation */ 667 cpu_model_from_info(&modela, infoa, &err); 668 if (err) { 669 error_propagate(errp, err); 670 return NULL; 671 } 672 cpu_model_from_info(&modelb, infob, &err); 673 if (err) { 674 error_propagate(errp, err); 675 return NULL; 676 } 677 compare_info = g_new0(CpuModelCompareInfo, 1); 678 679 /* check the cpu generation and ga level */ 680 if (modela.def->gen == modelb.def->gen) { 681 if (modela.def->ec_ga == modelb.def->ec_ga) { 682 /* ec and corresponding bc are identical */ 683 gen_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; 684 } else if (modela.def->ec_ga < modelb.def->ec_ga) { 685 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 686 } else { 687 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 688 } 689 } else if (modela.def->gen < modelb.def->gen) { 690 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 691 } else { 692 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 693 } 694 if (gen_result != CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 695 /* both models cannot be made identical */ 696 list_add_feat("type", &compare_info->responsible_properties); 697 } 698 699 /* check the feature set */ 700 if (bitmap_equal(modela.features, modelb.features, S390_FEAT_MAX)) { 701 feat_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; 702 } else { 703 bitmap_andnot(missing, modela.features, modelb.features, S390_FEAT_MAX); 704 s390_feat_bitmap_to_ascii(missing, 705 &compare_info->responsible_properties, 706 list_add_feat); 707 bitmap_andnot(added, modelb.features, modela.features, S390_FEAT_MAX); 708 s390_feat_bitmap_to_ascii(added, &compare_info->responsible_properties, 709 list_add_feat); 710 if (bitmap_empty(missing, S390_FEAT_MAX)) { 711 feat_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 712 } else if (bitmap_empty(added, S390_FEAT_MAX)) { 713 feat_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 714 } else { 715 feat_result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; 716 } 717 } 718 719 /* combine the results */ 720 if (gen_result == feat_result) { 721 compare_info->result = gen_result; 722 } else if (feat_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 723 compare_info->result = gen_result; 724 } else if (gen_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 725 compare_info->result = feat_result; 726 } else { 727 compare_info->result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; 728 } 729 return compare_info; 730 } 731 732 CpuModelBaselineInfo *qmp_query_cpu_model_baseline(CpuModelInfo *infoa, 733 CpuModelInfo *infob, 734 Error **errp) 735 { 736 Error *err = NULL; 737 CpuModelBaselineInfo *baseline_info; 738 S390CPUModel modela, modelb, model; 739 uint16_t cpu_type; 740 uint8_t max_gen_ga; 741 uint8_t max_gen; 742 743 /* convert both models to our internal representation */ 744 cpu_model_from_info(&modela, infoa, &err); 745 if (err) { 746 error_propagate(errp, err); 747 return NULL; 748 } 749 750 cpu_model_from_info(&modelb, infob, &err); 751 if (err) { 752 error_propagate(errp, err); 753 return NULL; 754 } 755 756 /* features both models support */ 757 bitmap_and(model.features, modela.features, modelb.features, S390_FEAT_MAX); 758 759 /* detect the maximum model not regarding features */ 760 if (modela.def->gen == modelb.def->gen) { 761 if (modela.def->type == modelb.def->type) { 762 cpu_type = modela.def->type; 763 } else { 764 cpu_type = 0; 765 } 766 max_gen = modela.def->gen; 767 max_gen_ga = MIN(modela.def->ec_ga, modelb.def->ec_ga); 768 } else if (modela.def->gen > modelb.def->gen) { 769 cpu_type = modelb.def->type; 770 max_gen = modelb.def->gen; 771 max_gen_ga = modelb.def->ec_ga; 772 } else { 773 cpu_type = modela.def->type; 774 max_gen = modela.def->gen; 775 max_gen_ga = modela.def->ec_ga; 776 } 777 778 model.def = s390_find_cpu_def(cpu_type, max_gen, max_gen_ga, 779 model.features); 780 781 /* models without early base features (esan3) are bad */ 782 if (!model.def) { 783 error_setg(errp, "No compatible CPU model could be created as" 784 " important base features are disabled"); 785 return NULL; 786 } 787 788 /* strip off features not part of the max model */ 789 bitmap_and(model.features, model.features, model.def->full_feat, 790 S390_FEAT_MAX); 791 792 baseline_info = g_new0(CpuModelBaselineInfo, 1); 793 baseline_info->model = g_malloc0(sizeof(*baseline_info->model)); 794 cpu_info_from_model(baseline_info->model, &model, true); 795 return baseline_info; 796 } 797 #endif 798 799 static void check_consistency(const S390CPUModel *model) 800 { 801 static int dep[][2] = { 802 { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH }, 803 { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH }, 804 { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH }, 805 { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT }, 806 { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH}, 807 { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT }, 808 { S390_FEAT_DFP_FAST, S390_FEAT_DFP }, 809 { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 }, 810 { S390_FEAT_EDAT_2, S390_FEAT_EDAT}, 811 { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 }, 812 { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 }, 813 { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 }, 814 { S390_FEAT_SIE_CMMA, S390_FEAT_CMM }, 815 { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS }, 816 { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT }, 817 { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 }, 818 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_3 }, 819 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_4 }, 820 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 821 { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR }, 822 { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR }, 823 { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 824 { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP }, 825 { S390_FEAT_CMM_NT, S390_FEAT_CMM }, 826 { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 827 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST }, 828 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 829 { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 }, 830 { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA }, 831 { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA }, 832 { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA }, 833 { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA }, 834 { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA }, 835 { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA }, 836 { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA }, 837 { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA }, 838 { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA }, 839 { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA }, 840 { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA }, 841 { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA }, 842 { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 }, 843 { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 }, 844 { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 }, 845 { S390_FEAT_AP_QUERY_CONFIG_INFO, S390_FEAT_AP }, 846 { S390_FEAT_AP_FACILITIES_TEST, S390_FEAT_AP }, 847 { S390_FEAT_PTFF_QSIE, S390_FEAT_MULTIPLE_EPOCH }, 848 { S390_FEAT_PTFF_QTOUE, S390_FEAT_MULTIPLE_EPOCH }, 849 { S390_FEAT_PTFF_STOE, S390_FEAT_MULTIPLE_EPOCH }, 850 { S390_FEAT_PTFF_STOUE, S390_FEAT_MULTIPLE_EPOCH }, 851 { S390_FEAT_AP_QUEUE_INTERRUPT_CONTROL, S390_FEAT_AP }, 852 { S390_FEAT_DIAG_318, S390_FEAT_EXTENDED_LENGTH_SCCB }, 853 }; 854 int i; 855 856 for (i = 0; i < ARRAY_SIZE(dep); i++) { 857 if (test_bit(dep[i][0], model->features) && 858 !test_bit(dep[i][1], model->features)) { 859 warn_report("\'%s\' requires \'%s\'.", 860 s390_feat_def(dep[i][0])->name, 861 s390_feat_def(dep[i][1])->name); 862 } 863 } 864 } 865 866 static void error_prepend_missing_feat(const char *name, void *opaque) 867 { 868 error_prepend((Error **) opaque, "%s ", name); 869 } 870 871 static void check_compatibility(const S390CPUModel *max_model, 872 const S390CPUModel *model, Error **errp) 873 { 874 S390FeatBitmap missing; 875 876 if (model->def->gen > max_model->def->gen) { 877 error_setg(errp, "Selected CPU generation is too new. Maximum " 878 "supported model in the configuration: \'%s\'", 879 max_model->def->name); 880 return; 881 } else if (model->def->gen == max_model->def->gen && 882 model->def->ec_ga > max_model->def->ec_ga) { 883 error_setg(errp, "Selected CPU GA level is too new. Maximum " 884 "supported model in the configuration: \'%s\'", 885 max_model->def->name); 886 return; 887 } 888 889 /* detect the missing features to properly report them */ 890 bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX); 891 if (bitmap_empty(missing, S390_FEAT_MAX)) { 892 return; 893 } 894 895 error_setg(errp, " "); 896 s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat); 897 error_prepend(errp, "Some features requested in the CPU model are not " 898 "available in the configuration: "); 899 } 900 901 static S390CPUModel *get_max_cpu_model(Error **errp) 902 { 903 Error *err = NULL; 904 static S390CPUModel max_model; 905 static bool cached; 906 907 if (cached) { 908 return &max_model; 909 } 910 911 if (kvm_enabled()) { 912 kvm_s390_get_host_cpu_model(&max_model, &err); 913 } else { 914 max_model.def = s390_find_cpu_def(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 915 QEMU_MAX_CPU_EC_GA, NULL); 916 bitmap_copy(max_model.features, qemu_max_cpu_feat, S390_FEAT_MAX); 917 } 918 if (err) { 919 error_propagate(errp, err); 920 return NULL; 921 } 922 cached = true; 923 return &max_model; 924 } 925 926 static inline void apply_cpu_model(const S390CPUModel *model, Error **errp) 927 { 928 #ifndef CONFIG_USER_ONLY 929 Error *err = NULL; 930 static S390CPUModel applied_model; 931 static bool applied; 932 933 /* 934 * We have the same model for all VCPUs. KVM can only be configured before 935 * any VCPUs are defined in KVM. 936 */ 937 if (applied) { 938 if (model && memcmp(&applied_model, model, sizeof(S390CPUModel))) { 939 error_setg(errp, "Mixed CPU models are not supported on s390x."); 940 } 941 return; 942 } 943 944 if (kvm_enabled()) { 945 kvm_s390_apply_cpu_model(model, &err); 946 if (err) { 947 error_propagate(errp, err); 948 return; 949 } 950 } 951 952 applied = true; 953 if (model) { 954 applied_model = *model; 955 } 956 #endif 957 } 958 959 void s390_realize_cpu_model(CPUState *cs, Error **errp) 960 { 961 Error *err = NULL; 962 S390CPUClass *xcc = S390_CPU_GET_CLASS(cs); 963 S390CPU *cpu = S390_CPU(cs); 964 const S390CPUModel *max_model; 965 966 if (xcc->kvm_required && !kvm_enabled()) { 967 error_setg(errp, "CPU definition requires KVM"); 968 return; 969 } 970 971 if (!cpu->model) { 972 /* no host model support -> perform compatibility stuff */ 973 apply_cpu_model(NULL, errp); 974 return; 975 } 976 977 max_model = get_max_cpu_model(errp); 978 if (!max_model) { 979 error_prepend(errp, "CPU models are not available: "); 980 return; 981 } 982 983 /* copy over properties that can vary */ 984 cpu->model->lowest_ibc = max_model->lowest_ibc; 985 cpu->model->cpu_id = max_model->cpu_id; 986 cpu->model->cpu_id_format = max_model->cpu_id_format; 987 cpu->model->cpu_ver = max_model->cpu_ver; 988 989 check_consistency(cpu->model); 990 check_compatibility(max_model, cpu->model, &err); 991 if (err) { 992 error_propagate(errp, err); 993 return; 994 } 995 996 apply_cpu_model(cpu->model, errp); 997 998 #if !defined(CONFIG_USER_ONLY) 999 cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model); 1000 if (tcg_enabled()) { 1001 /* basic mode, write the cpu address into the first 4 bit of the ID */ 1002 cpu->env.cpuid = deposit64(cpu->env.cpuid, 54, 4, cpu->env.core_id); 1003 } 1004 #endif 1005 } 1006 1007 static void get_feature(Object *obj, Visitor *v, const char *name, 1008 void *opaque, Error **errp) 1009 { 1010 S390Feat feat = (S390Feat) (uintptr_t) opaque; 1011 S390CPU *cpu = S390_CPU(obj); 1012 bool value; 1013 1014 if (!cpu->model) { 1015 error_setg(errp, "Details about the host CPU model are not available, " 1016 "features cannot be queried."); 1017 return; 1018 } 1019 1020 value = test_bit(feat, cpu->model->features); 1021 visit_type_bool(v, name, &value, errp); 1022 } 1023 1024 static void set_feature(Object *obj, Visitor *v, const char *name, 1025 void *opaque, Error **errp) 1026 { 1027 S390Feat feat = (S390Feat) (uintptr_t) opaque; 1028 DeviceState *dev = DEVICE(obj); 1029 S390CPU *cpu = S390_CPU(obj); 1030 bool value; 1031 1032 if (dev->realized) { 1033 error_setg(errp, "Attempt to set property '%s' on '%s' after " 1034 "it was realized", name, object_get_typename(obj)); 1035 return; 1036 } else if (!cpu->model) { 1037 error_setg(errp, "Details about the host CPU model are not available, " 1038 "features cannot be changed."); 1039 return; 1040 } 1041 1042 if (!visit_type_bool(v, name, &value, errp)) { 1043 return; 1044 } 1045 if (value) { 1046 if (!test_bit(feat, cpu->model->def->full_feat)) { 1047 error_setg(errp, "Feature '%s' is not available for CPU model '%s'," 1048 " it was introduced with later models.", 1049 name, cpu->model->def->name); 1050 return; 1051 } 1052 set_bit(feat, cpu->model->features); 1053 } else { 1054 clear_bit(feat, cpu->model->features); 1055 } 1056 } 1057 1058 static void get_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 S390CPU *cpu = S390_CPU(obj); 1064 S390FeatBitmap tmp; 1065 bool value; 1066 1067 if (!cpu->model) { 1068 error_setg(errp, "Details about the host CPU model are not available, " 1069 "features cannot be queried."); 1070 return; 1071 } 1072 1073 /* a group is enabled if all features are enabled */ 1074 bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX); 1075 value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX); 1076 visit_type_bool(v, name, &value, errp); 1077 } 1078 1079 static void set_feature_group(Object *obj, Visitor *v, const char *name, 1080 void *opaque, Error **errp) 1081 { 1082 S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque; 1083 const S390FeatGroupDef *def = s390_feat_group_def(group); 1084 DeviceState *dev = DEVICE(obj); 1085 S390CPU *cpu = S390_CPU(obj); 1086 bool value; 1087 1088 if (dev->realized) { 1089 error_setg(errp, "Attempt to set property '%s' on '%s' after " 1090 "it was realized", name, object_get_typename(obj)); 1091 return; 1092 } else if (!cpu->model) { 1093 error_setg(errp, "Details about the host CPU model are not available, " 1094 "features cannot be changed."); 1095 return; 1096 } 1097 1098 if (!visit_type_bool(v, name, &value, errp)) { 1099 return; 1100 } 1101 if (value) { 1102 /* groups are added in one shot, so an intersect is sufficient */ 1103 if (!bitmap_intersects(def->feat, cpu->model->def->full_feat, 1104 S390_FEAT_MAX)) { 1105 error_setg(errp, "Group '%s' is not available for CPU model '%s'," 1106 " it was introduced with later models.", 1107 name, cpu->model->def->name); 1108 return; 1109 } 1110 bitmap_or(cpu->model->features, cpu->model->features, def->feat, 1111 S390_FEAT_MAX); 1112 } else { 1113 bitmap_andnot(cpu->model->features, cpu->model->features, def->feat, 1114 S390_FEAT_MAX); 1115 } 1116 } 1117 1118 static void s390_cpu_model_initfn(Object *obj) 1119 { 1120 S390CPU *cpu = S390_CPU(obj); 1121 S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu); 1122 1123 cpu->model = g_malloc0(sizeof(*cpu->model)); 1124 /* copy the model, so we can modify it */ 1125 cpu->model->def = xcc->cpu_def; 1126 if (xcc->is_static) { 1127 /* base model - features will never change */ 1128 bitmap_copy(cpu->model->features, cpu->model->def->base_feat, 1129 S390_FEAT_MAX); 1130 } else { 1131 /* latest model - features can change */ 1132 bitmap_copy(cpu->model->features, 1133 cpu->model->def->default_feat, S390_FEAT_MAX); 1134 } 1135 } 1136 1137 static S390CPUDef s390_qemu_cpu_def; 1138 static S390CPUModel s390_qemu_cpu_model; 1139 1140 /* Set the qemu CPU model (on machine initialization). Must not be called 1141 * once CPUs have been created. 1142 */ 1143 void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga, 1144 const S390FeatInit feat_init) 1145 { 1146 const S390CPUDef *def = s390_find_cpu_def(type, gen, ec_ga, NULL); 1147 1148 g_assert(def); 1149 g_assert(QTAILQ_EMPTY_RCU(&cpus)); 1150 1151 /* TCG emulates some features that can usually not be enabled with 1152 * the emulated machine generation. Make sure they can be enabled 1153 * when using the QEMU model by adding them to full_feat. We have 1154 * to copy the definition to do that. 1155 */ 1156 memcpy(&s390_qemu_cpu_def, def, sizeof(s390_qemu_cpu_def)); 1157 bitmap_or(s390_qemu_cpu_def.full_feat, s390_qemu_cpu_def.full_feat, 1158 qemu_max_cpu_feat, S390_FEAT_MAX); 1159 1160 /* build the CPU model */ 1161 s390_qemu_cpu_model.def = &s390_qemu_cpu_def; 1162 bitmap_zero(s390_qemu_cpu_model.features, S390_FEAT_MAX); 1163 s390_init_feat_bitmap(feat_init, s390_qemu_cpu_model.features); 1164 } 1165 1166 static void s390_qemu_cpu_model_initfn(Object *obj) 1167 { 1168 S390CPU *cpu = S390_CPU(obj); 1169 1170 cpu->model = g_malloc0(sizeof(*cpu->model)); 1171 /* copy the CPU model so we can modify it */ 1172 memcpy(cpu->model, &s390_qemu_cpu_model, sizeof(*cpu->model)); 1173 } 1174 1175 static void s390_max_cpu_model_initfn(Object *obj) 1176 { 1177 const S390CPUModel *max_model; 1178 S390CPU *cpu = S390_CPU(obj); 1179 Error *local_err = NULL; 1180 1181 if (kvm_enabled() && !kvm_s390_cpu_models_supported()) { 1182 /* "max" and "host" always work, even without CPU model support */ 1183 return; 1184 } 1185 1186 max_model = get_max_cpu_model(&local_err); 1187 if (local_err) { 1188 /* we expect errors only under KVM, when actually querying the kernel */ 1189 g_assert(kvm_enabled()); 1190 error_report_err(local_err); 1191 /* fallback to unsupported CPU models */ 1192 return; 1193 } 1194 1195 cpu->model = g_new(S390CPUModel, 1); 1196 /* copy the CPU model so we can modify it */ 1197 memcpy(cpu->model, max_model, sizeof(*cpu->model)); 1198 } 1199 1200 static void s390_cpu_model_finalize(Object *obj) 1201 { 1202 S390CPU *cpu = S390_CPU(obj); 1203 1204 g_free(cpu->model); 1205 cpu->model = NULL; 1206 } 1207 1208 static bool get_is_migration_safe(Object *obj, Error **errp) 1209 { 1210 return S390_CPU_GET_CLASS(obj)->is_migration_safe; 1211 } 1212 1213 static bool get_is_static(Object *obj, Error **errp) 1214 { 1215 return S390_CPU_GET_CLASS(obj)->is_static; 1216 } 1217 1218 static char *get_description(Object *obj, Error **errp) 1219 { 1220 return g_strdup(S390_CPU_GET_CLASS(obj)->desc); 1221 } 1222 1223 void s390_cpu_model_class_register_props(ObjectClass *oc) 1224 { 1225 S390FeatGroup group; 1226 S390Feat feat; 1227 1228 object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe, 1229 NULL); 1230 object_class_property_add_bool(oc, "static", get_is_static, 1231 NULL); 1232 object_class_property_add_str(oc, "description", get_description, NULL); 1233 1234 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 1235 const S390FeatDef *def = s390_feat_def(feat); 1236 object_class_property_add(oc, def->name, "bool", get_feature, 1237 set_feature, NULL, (void *) feat); 1238 object_class_property_set_description(oc, def->name, def->desc); 1239 } 1240 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 1241 const S390FeatGroupDef *def = s390_feat_group_def(group); 1242 object_class_property_add(oc, def->name, "bool", get_feature_group, 1243 set_feature_group, NULL, (void *) group); 1244 object_class_property_set_description(oc, def->name, def->desc); 1245 } 1246 } 1247 1248 #ifdef CONFIG_KVM 1249 static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data) 1250 { 1251 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1252 1253 xcc->kvm_required = true; 1254 xcc->desc = "KVM only: All recognized features"; 1255 } 1256 #endif 1257 1258 static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data) 1259 { 1260 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1261 1262 /* all base models are migration safe */ 1263 xcc->cpu_def = (const S390CPUDef *) data; 1264 xcc->is_migration_safe = true; 1265 xcc->is_static = true; 1266 xcc->desc = xcc->cpu_def->desc; 1267 } 1268 1269 static void s390_cpu_model_class_init(ObjectClass *oc, void *data) 1270 { 1271 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1272 1273 /* model that can change between QEMU versions */ 1274 xcc->cpu_def = (const S390CPUDef *) data; 1275 xcc->is_migration_safe = true; 1276 xcc->desc = xcc->cpu_def->desc; 1277 } 1278 1279 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data) 1280 { 1281 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1282 1283 xcc->is_migration_safe = true; 1284 xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s", 1285 qemu_hw_version()); 1286 } 1287 1288 static void s390_max_cpu_model_class_init(ObjectClass *oc, void *data) 1289 { 1290 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1291 1292 /* 1293 * The "max" model is neither static nor migration safe. Under KVM 1294 * it represents the "host" model. Under TCG it represents some kind of 1295 * "qemu" CPU model without compat handling and maybe with some additional 1296 * CPU features that are not yet unlocked in the "qemu" model. 1297 */ 1298 xcc->desc = 1299 "Enables all features supported by the accelerator in the current host"; 1300 } 1301 1302 /* Generate type name for a cpu model. Caller has to free the string. */ 1303 static char *s390_cpu_type_name(const char *model_name) 1304 { 1305 return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name); 1306 } 1307 1308 /* Generate type name for a base cpu model. Caller has to free the string. */ 1309 static char *s390_base_cpu_type_name(const char *model_name) 1310 { 1311 return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name); 1312 } 1313 1314 ObjectClass *s390_cpu_class_by_name(const char *name) 1315 { 1316 char *typename = s390_cpu_type_name(name); 1317 ObjectClass *oc; 1318 1319 oc = object_class_by_name(typename); 1320 g_free(typename); 1321 return oc; 1322 } 1323 1324 static const TypeInfo qemu_s390_cpu_type_info = { 1325 .name = S390_CPU_TYPE_NAME("qemu"), 1326 .parent = TYPE_S390_CPU, 1327 .instance_init = s390_qemu_cpu_model_initfn, 1328 .instance_finalize = s390_cpu_model_finalize, 1329 .class_init = s390_qemu_cpu_model_class_init, 1330 }; 1331 1332 static const TypeInfo max_s390_cpu_type_info = { 1333 .name = S390_CPU_TYPE_NAME("max"), 1334 .parent = TYPE_S390_CPU, 1335 .instance_init = s390_max_cpu_model_initfn, 1336 .instance_finalize = s390_cpu_model_finalize, 1337 .class_init = s390_max_cpu_model_class_init, 1338 }; 1339 1340 #ifdef CONFIG_KVM 1341 static const TypeInfo host_s390_cpu_type_info = { 1342 .name = S390_CPU_TYPE_NAME("host"), 1343 .parent = S390_CPU_TYPE_NAME("max"), 1344 .class_init = s390_host_cpu_model_class_init, 1345 }; 1346 #endif 1347 1348 static void init_ignored_base_feat(void) 1349 { 1350 static const int feats[] = { 1351 /* MSA subfunctions that could not be available on certain machines */ 1352 S390_FEAT_KMAC_DEA, 1353 S390_FEAT_KMAC_TDEA_128, 1354 S390_FEAT_KMAC_TDEA_192, 1355 S390_FEAT_KMC_DEA, 1356 S390_FEAT_KMC_TDEA_128, 1357 S390_FEAT_KMC_TDEA_192, 1358 S390_FEAT_KM_DEA, 1359 S390_FEAT_KM_TDEA_128, 1360 S390_FEAT_KM_TDEA_192, 1361 S390_FEAT_KIMD_SHA_1, 1362 S390_FEAT_KLMD_SHA_1, 1363 /* CSSKE is deprecated on newer generations */ 1364 S390_FEAT_CONDITIONAL_SSKE, 1365 }; 1366 int i; 1367 1368 for (i = 0; i < ARRAY_SIZE(feats); i++) { 1369 set_bit(feats[i], ignored_base_feat); 1370 } 1371 } 1372 1373 static void register_types(void) 1374 { 1375 static const S390FeatInit qemu_latest_init = { S390_FEAT_LIST_QEMU_LATEST }; 1376 int i; 1377 1378 init_ignored_base_feat(); 1379 1380 /* init all bitmaps from gnerated data initially */ 1381 s390_init_feat_bitmap(qemu_max_cpu_feat_init, qemu_max_cpu_feat); 1382 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 1383 s390_init_feat_bitmap(s390_cpu_defs[i].base_init, 1384 s390_cpu_defs[i].base_feat); 1385 s390_init_feat_bitmap(s390_cpu_defs[i].default_init, 1386 s390_cpu_defs[i].default_feat); 1387 s390_init_feat_bitmap(s390_cpu_defs[i].full_init, 1388 s390_cpu_defs[i].full_feat); 1389 } 1390 1391 /* initialize the qemu model with latest definition */ 1392 s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 1393 QEMU_MAX_CPU_EC_GA, qemu_latest_init); 1394 1395 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 1396 char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name); 1397 TypeInfo ti_base = { 1398 .name = base_name, 1399 .parent = TYPE_S390_CPU, 1400 .instance_init = s390_cpu_model_initfn, 1401 .instance_finalize = s390_cpu_model_finalize, 1402 .class_init = s390_base_cpu_model_class_init, 1403 .class_data = (void *) &s390_cpu_defs[i], 1404 }; 1405 char *name = s390_cpu_type_name(s390_cpu_defs[i].name); 1406 TypeInfo ti = { 1407 .name = name, 1408 .parent = TYPE_S390_CPU, 1409 .instance_init = s390_cpu_model_initfn, 1410 .instance_finalize = s390_cpu_model_finalize, 1411 .class_init = s390_cpu_model_class_init, 1412 .class_data = (void *) &s390_cpu_defs[i], 1413 }; 1414 1415 type_register_static(&ti_base); 1416 type_register_static(&ti); 1417 g_free(base_name); 1418 g_free(name); 1419 } 1420 1421 type_register_static(&qemu_s390_cpu_type_info); 1422 type_register_static(&max_s390_cpu_type_info); 1423 #ifdef CONFIG_KVM 1424 type_register_static(&host_s390_cpu_type_info); 1425 #endif 1426 } 1427 1428 type_init(register_types) 1429