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 CpuDefinitionInfo *info; 431 char *name = g_strdup(object_class_get_name(klass)); 432 S390CPUClass *scc = S390_CPU_CLASS(klass); 433 434 /* strip off the -s390x-cpu */ 435 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; 436 info = g_new0(CpuDefinitionInfo, 1); 437 info->name = name; 438 info->has_migration_safe = true; 439 info->migration_safe = scc->is_migration_safe; 440 info->q_static = scc->is_static; 441 info->q_typename = g_strdup(object_class_get_name(klass)); 442 /* check for unavailable features */ 443 if (cpu_list_data->model) { 444 Object *obj; 445 S390CPU *sc; 446 obj = object_new_with_class(klass); 447 sc = S390_CPU(obj); 448 if (sc->model) { 449 info->has_unavailable_features = true; 450 check_unavailable_features(cpu_list_data->model, sc->model, 451 &info->unavailable_features); 452 } 453 object_unref(obj); 454 } 455 456 QAPI_LIST_PREPEND(*cpu_list, info); 457 } 458 459 CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp) 460 { 461 struct CpuDefinitionInfoListData list_data = { 462 .list = NULL, 463 }; 464 465 list_data.model = get_max_cpu_model(NULL); 466 467 object_class_foreach(create_cpu_model_list, TYPE_S390_CPU, false, 468 &list_data); 469 470 return list_data.list; 471 } 472 473 static void cpu_model_from_info(S390CPUModel *model, const CpuModelInfo *info, 474 Error **errp) 475 { 476 Error *err = NULL; 477 const QDict *qdict = NULL; 478 const QDictEntry *e; 479 Visitor *visitor; 480 ObjectClass *oc; 481 S390CPU *cpu; 482 Object *obj; 483 484 if (info->props) { 485 qdict = qobject_to(QDict, info->props); 486 if (!qdict) { 487 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict"); 488 return; 489 } 490 } 491 492 oc = cpu_class_by_name(TYPE_S390_CPU, info->name); 493 if (!oc) { 494 error_setg(errp, "The CPU definition \'%s\' is unknown.", info->name); 495 return; 496 } 497 if (S390_CPU_CLASS(oc)->kvm_required && !kvm_enabled()) { 498 error_setg(errp, "The CPU definition '%s' requires KVM", info->name); 499 return; 500 } 501 obj = object_new_with_class(oc); 502 cpu = S390_CPU(obj); 503 504 if (!cpu->model) { 505 error_setg(errp, "Details about the host CPU model are not available, " 506 "it cannot be used."); 507 object_unref(obj); 508 return; 509 } 510 511 if (qdict) { 512 visitor = qobject_input_visitor_new(info->props); 513 if (!visit_start_struct(visitor, NULL, NULL, 0, errp)) { 514 visit_free(visitor); 515 object_unref(obj); 516 return; 517 } 518 for (e = qdict_first(qdict); e; e = qdict_next(qdict, e)) { 519 if (!object_property_set(obj, e->key, visitor, &err)) { 520 break; 521 } 522 } 523 if (!err) { 524 visit_check_struct(visitor, &err); 525 } 526 visit_end_struct(visitor, NULL); 527 visit_free(visitor); 528 if (err) { 529 error_propagate(errp, err); 530 object_unref(obj); 531 return; 532 } 533 } 534 535 /* copy the model and throw the cpu away */ 536 memcpy(model, cpu->model, sizeof(*model)); 537 object_unref(obj); 538 } 539 540 static void qdict_add_disabled_feat(const char *name, void *opaque) 541 { 542 qdict_put_bool(opaque, name, false); 543 } 544 545 static void qdict_add_enabled_feat(const char *name, void *opaque) 546 { 547 qdict_put_bool(opaque, name, true); 548 } 549 550 /* convert S390CPUDef into a static CpuModelInfo */ 551 static void cpu_info_from_model(CpuModelInfo *info, const S390CPUModel *model, 552 bool delta_changes) 553 { 554 QDict *qdict = qdict_new(); 555 S390FeatBitmap bitmap; 556 557 /* always fallback to the static base model */ 558 info->name = g_strdup_printf("%s-base", model->def->name); 559 560 if (delta_changes) { 561 /* features deleted from the base feature set */ 562 bitmap_andnot(bitmap, model->def->base_feat, model->features, 563 S390_FEAT_MAX); 564 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) { 565 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat); 566 } 567 568 /* features added to the base feature set */ 569 bitmap_andnot(bitmap, model->features, model->def->base_feat, 570 S390_FEAT_MAX); 571 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) { 572 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_enabled_feat); 573 } 574 } else { 575 /* expand all features */ 576 s390_feat_bitmap_to_ascii(model->features, qdict, 577 qdict_add_enabled_feat); 578 bitmap_complement(bitmap, model->features, S390_FEAT_MAX); 579 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat); 580 } 581 582 if (!qdict_size(qdict)) { 583 qobject_unref(qdict); 584 } else { 585 info->props = QOBJECT(qdict); 586 info->has_props = true; 587 } 588 } 589 590 CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type, 591 CpuModelInfo *model, 592 Error **errp) 593 { 594 Error *err = NULL; 595 CpuModelExpansionInfo *expansion_info = NULL; 596 S390CPUModel s390_model; 597 bool delta_changes = false; 598 599 /* convert it to our internal representation */ 600 cpu_model_from_info(&s390_model, model, &err); 601 if (err) { 602 error_propagate(errp, err); 603 return NULL; 604 } 605 606 if (type == CPU_MODEL_EXPANSION_TYPE_STATIC) { 607 delta_changes = true; 608 } else if (type != CPU_MODEL_EXPANSION_TYPE_FULL) { 609 error_setg(errp, "The requested expansion type is not supported."); 610 return NULL; 611 } 612 613 /* convert it back to a static representation */ 614 expansion_info = g_new0(CpuModelExpansionInfo, 1); 615 expansion_info->model = g_malloc0(sizeof(*expansion_info->model)); 616 cpu_info_from_model(expansion_info->model, &s390_model, delta_changes); 617 return expansion_info; 618 } 619 620 static void list_add_feat(const char *name, void *opaque) 621 { 622 strList **last = (strList **) opaque; 623 624 QAPI_LIST_PREPEND(*last, g_strdup(name)); 625 } 626 627 CpuModelCompareInfo *qmp_query_cpu_model_comparison(CpuModelInfo *infoa, 628 CpuModelInfo *infob, 629 Error **errp) 630 { 631 Error *err = NULL; 632 CpuModelCompareResult feat_result, gen_result; 633 CpuModelCompareInfo *compare_info; 634 S390FeatBitmap missing, added; 635 S390CPUModel modela, modelb; 636 637 /* convert both models to our internal representation */ 638 cpu_model_from_info(&modela, infoa, &err); 639 if (err) { 640 error_propagate(errp, err); 641 return NULL; 642 } 643 cpu_model_from_info(&modelb, infob, &err); 644 if (err) { 645 error_propagate(errp, err); 646 return NULL; 647 } 648 compare_info = g_new0(CpuModelCompareInfo, 1); 649 650 /* check the cpu generation and ga level */ 651 if (modela.def->gen == modelb.def->gen) { 652 if (modela.def->ec_ga == modelb.def->ec_ga) { 653 /* ec and corresponding bc are identical */ 654 gen_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; 655 } else if (modela.def->ec_ga < modelb.def->ec_ga) { 656 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 657 } else { 658 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 659 } 660 } else if (modela.def->gen < modelb.def->gen) { 661 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 662 } else { 663 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 664 } 665 if (gen_result != CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 666 /* both models cannot be made identical */ 667 list_add_feat("type", &compare_info->responsible_properties); 668 } 669 670 /* check the feature set */ 671 if (bitmap_equal(modela.features, modelb.features, S390_FEAT_MAX)) { 672 feat_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; 673 } else { 674 bitmap_andnot(missing, modela.features, modelb.features, S390_FEAT_MAX); 675 s390_feat_bitmap_to_ascii(missing, 676 &compare_info->responsible_properties, 677 list_add_feat); 678 bitmap_andnot(added, modelb.features, modela.features, S390_FEAT_MAX); 679 s390_feat_bitmap_to_ascii(added, &compare_info->responsible_properties, 680 list_add_feat); 681 if (bitmap_empty(missing, S390_FEAT_MAX)) { 682 feat_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 683 } else if (bitmap_empty(added, S390_FEAT_MAX)) { 684 feat_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 685 } else { 686 feat_result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; 687 } 688 } 689 690 /* combine the results */ 691 if (gen_result == feat_result) { 692 compare_info->result = gen_result; 693 } else if (feat_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 694 compare_info->result = gen_result; 695 } else if (gen_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 696 compare_info->result = feat_result; 697 } else { 698 compare_info->result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; 699 } 700 return compare_info; 701 } 702 703 CpuModelBaselineInfo *qmp_query_cpu_model_baseline(CpuModelInfo *infoa, 704 CpuModelInfo *infob, 705 Error **errp) 706 { 707 Error *err = NULL; 708 CpuModelBaselineInfo *baseline_info; 709 S390CPUModel modela, modelb, model; 710 uint16_t cpu_type; 711 uint8_t max_gen_ga; 712 uint8_t max_gen; 713 714 /* convert both models to our internal representation */ 715 cpu_model_from_info(&modela, infoa, &err); 716 if (err) { 717 error_propagate(errp, err); 718 return NULL; 719 } 720 721 cpu_model_from_info(&modelb, infob, &err); 722 if (err) { 723 error_propagate(errp, err); 724 return NULL; 725 } 726 727 /* features both models support */ 728 bitmap_and(model.features, modela.features, modelb.features, S390_FEAT_MAX); 729 730 /* detect the maximum model not regarding features */ 731 if (modela.def->gen == modelb.def->gen) { 732 if (modela.def->type == modelb.def->type) { 733 cpu_type = modela.def->type; 734 } else { 735 cpu_type = 0; 736 } 737 max_gen = modela.def->gen; 738 max_gen_ga = MIN(modela.def->ec_ga, modelb.def->ec_ga); 739 } else if (modela.def->gen > modelb.def->gen) { 740 cpu_type = modelb.def->type; 741 max_gen = modelb.def->gen; 742 max_gen_ga = modelb.def->ec_ga; 743 } else { 744 cpu_type = modela.def->type; 745 max_gen = modela.def->gen; 746 max_gen_ga = modela.def->ec_ga; 747 } 748 749 model.def = s390_find_cpu_def(cpu_type, max_gen, max_gen_ga, 750 model.features); 751 752 /* models without early base features (esan3) are bad */ 753 if (!model.def) { 754 error_setg(errp, "No compatible CPU model could be created as" 755 " important base features are disabled"); 756 return NULL; 757 } 758 759 /* strip off features not part of the max model */ 760 bitmap_and(model.features, model.features, model.def->full_feat, 761 S390_FEAT_MAX); 762 763 baseline_info = g_new0(CpuModelBaselineInfo, 1); 764 baseline_info->model = g_malloc0(sizeof(*baseline_info->model)); 765 cpu_info_from_model(baseline_info->model, &model, true); 766 return baseline_info; 767 } 768 #endif 769 770 static void check_consistency(const S390CPUModel *model) 771 { 772 static int dep[][2] = { 773 { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH }, 774 { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH }, 775 { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH }, 776 { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT }, 777 { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH}, 778 { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT }, 779 { S390_FEAT_DFP_FAST, S390_FEAT_DFP }, 780 { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 }, 781 { S390_FEAT_EDAT_2, S390_FEAT_EDAT}, 782 { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 }, 783 { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 }, 784 { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 }, 785 { S390_FEAT_SIE_CMMA, S390_FEAT_CMM }, 786 { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS }, 787 { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT }, 788 { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 }, 789 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_3 }, 790 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_4 }, 791 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 792 { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR }, 793 { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR }, 794 { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 795 { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP }, 796 { S390_FEAT_CMM_NT, S390_FEAT_CMM }, 797 { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 798 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST }, 799 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 800 { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 }, 801 { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA }, 802 { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA }, 803 { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA }, 804 { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA }, 805 { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA }, 806 { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA }, 807 { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA }, 808 { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA }, 809 { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA }, 810 { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA }, 811 { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA }, 812 { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA }, 813 { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 }, 814 { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 }, 815 { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 }, 816 { S390_FEAT_AP_QUERY_CONFIG_INFO, S390_FEAT_AP }, 817 { S390_FEAT_AP_FACILITIES_TEST, S390_FEAT_AP }, 818 { S390_FEAT_PTFF_QSIE, S390_FEAT_MULTIPLE_EPOCH }, 819 { S390_FEAT_PTFF_QTOUE, S390_FEAT_MULTIPLE_EPOCH }, 820 { S390_FEAT_PTFF_STOE, S390_FEAT_MULTIPLE_EPOCH }, 821 { S390_FEAT_PTFF_STOUE, S390_FEAT_MULTIPLE_EPOCH }, 822 { S390_FEAT_AP_QUEUE_INTERRUPT_CONTROL, S390_FEAT_AP }, 823 { S390_FEAT_DIAG_318, S390_FEAT_EXTENDED_LENGTH_SCCB }, 824 }; 825 int i; 826 827 for (i = 0; i < ARRAY_SIZE(dep); i++) { 828 if (test_bit(dep[i][0], model->features) && 829 !test_bit(dep[i][1], model->features)) { 830 warn_report("\'%s\' requires \'%s\'.", 831 s390_feat_def(dep[i][0])->name, 832 s390_feat_def(dep[i][1])->name); 833 } 834 } 835 } 836 837 static void error_prepend_missing_feat(const char *name, void *opaque) 838 { 839 error_prepend((Error **) opaque, "%s ", name); 840 } 841 842 static void check_compatibility(const S390CPUModel *max_model, 843 const S390CPUModel *model, Error **errp) 844 { 845 S390FeatBitmap missing; 846 847 if (model->def->gen > max_model->def->gen) { 848 error_setg(errp, "Selected CPU generation is too new. Maximum " 849 "supported model in the configuration: \'%s\'", 850 max_model->def->name); 851 return; 852 } else if (model->def->gen == max_model->def->gen && 853 model->def->ec_ga > max_model->def->ec_ga) { 854 error_setg(errp, "Selected CPU GA level is too new. Maximum " 855 "supported model in the configuration: \'%s\'", 856 max_model->def->name); 857 return; 858 } 859 860 /* detect the missing features to properly report them */ 861 bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX); 862 if (bitmap_empty(missing, S390_FEAT_MAX)) { 863 return; 864 } 865 866 error_setg(errp, " "); 867 s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat); 868 error_prepend(errp, "Some features requested in the CPU model are not " 869 "available in the configuration: "); 870 } 871 872 static S390CPUModel *get_max_cpu_model(Error **errp) 873 { 874 Error *err = NULL; 875 static S390CPUModel max_model; 876 static bool cached; 877 878 if (cached) { 879 return &max_model; 880 } 881 882 if (kvm_enabled()) { 883 kvm_s390_get_host_cpu_model(&max_model, &err); 884 } else { 885 max_model.def = s390_find_cpu_def(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 886 QEMU_MAX_CPU_EC_GA, NULL); 887 bitmap_copy(max_model.features, qemu_max_cpu_feat, S390_FEAT_MAX); 888 } 889 if (err) { 890 error_propagate(errp, err); 891 return NULL; 892 } 893 cached = true; 894 return &max_model; 895 } 896 897 static inline void apply_cpu_model(const S390CPUModel *model, Error **errp) 898 { 899 #ifndef CONFIG_USER_ONLY 900 Error *err = NULL; 901 static S390CPUModel applied_model; 902 static bool applied; 903 904 /* 905 * We have the same model for all VCPUs. KVM can only be configured before 906 * any VCPUs are defined in KVM. 907 */ 908 if (applied) { 909 if (model && memcmp(&applied_model, model, sizeof(S390CPUModel))) { 910 error_setg(errp, "Mixed CPU models are not supported on s390x."); 911 } 912 return; 913 } 914 915 if (kvm_enabled()) { 916 kvm_s390_apply_cpu_model(model, &err); 917 if (err) { 918 error_propagate(errp, err); 919 return; 920 } 921 } 922 923 applied = true; 924 if (model) { 925 applied_model = *model; 926 } 927 #endif 928 } 929 930 void s390_realize_cpu_model(CPUState *cs, Error **errp) 931 { 932 Error *err = NULL; 933 S390CPUClass *xcc = S390_CPU_GET_CLASS(cs); 934 S390CPU *cpu = S390_CPU(cs); 935 const S390CPUModel *max_model; 936 937 if (xcc->kvm_required && !kvm_enabled()) { 938 error_setg(errp, "CPU definition requires KVM"); 939 return; 940 } 941 942 if (!cpu->model) { 943 /* no host model support -> perform compatibility stuff */ 944 apply_cpu_model(NULL, errp); 945 return; 946 } 947 948 max_model = get_max_cpu_model(errp); 949 if (!max_model) { 950 error_prepend(errp, "CPU models are not available: "); 951 return; 952 } 953 954 /* copy over properties that can vary */ 955 cpu->model->lowest_ibc = max_model->lowest_ibc; 956 cpu->model->cpu_id = max_model->cpu_id; 957 cpu->model->cpu_id_format = max_model->cpu_id_format; 958 cpu->model->cpu_ver = max_model->cpu_ver; 959 960 check_consistency(cpu->model); 961 check_compatibility(max_model, cpu->model, &err); 962 if (err) { 963 error_propagate(errp, err); 964 return; 965 } 966 967 apply_cpu_model(cpu->model, errp); 968 969 #if !defined(CONFIG_USER_ONLY) 970 cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model); 971 if (tcg_enabled()) { 972 /* basic mode, write the cpu address into the first 4 bit of the ID */ 973 cpu->env.cpuid = deposit64(cpu->env.cpuid, 54, 4, cpu->env.core_id); 974 } 975 #endif 976 } 977 978 static void get_feature(Object *obj, Visitor *v, const char *name, 979 void *opaque, Error **errp) 980 { 981 S390Feat feat = (S390Feat) (uintptr_t) opaque; 982 S390CPU *cpu = S390_CPU(obj); 983 bool value; 984 985 if (!cpu->model) { 986 error_setg(errp, "Details about the host CPU model are not available, " 987 "features cannot be queried."); 988 return; 989 } 990 991 value = test_bit(feat, cpu->model->features); 992 visit_type_bool(v, name, &value, errp); 993 } 994 995 static void set_feature(Object *obj, Visitor *v, const char *name, 996 void *opaque, Error **errp) 997 { 998 S390Feat feat = (S390Feat) (uintptr_t) opaque; 999 DeviceState *dev = DEVICE(obj); 1000 S390CPU *cpu = S390_CPU(obj); 1001 bool value; 1002 1003 if (dev->realized) { 1004 error_setg(errp, "Attempt to set property '%s' on '%s' after " 1005 "it was realized", name, object_get_typename(obj)); 1006 return; 1007 } else if (!cpu->model) { 1008 error_setg(errp, "Details about the host CPU model are not available, " 1009 "features cannot be changed."); 1010 return; 1011 } 1012 1013 if (!visit_type_bool(v, name, &value, errp)) { 1014 return; 1015 } 1016 if (value) { 1017 if (!test_bit(feat, cpu->model->def->full_feat)) { 1018 error_setg(errp, "Feature '%s' is not available for CPU model '%s'," 1019 " it was introduced with later models.", 1020 name, cpu->model->def->name); 1021 return; 1022 } 1023 set_bit(feat, cpu->model->features); 1024 } else { 1025 clear_bit(feat, cpu->model->features); 1026 } 1027 } 1028 1029 static void get_feature_group(Object *obj, Visitor *v, const char *name, 1030 void *opaque, Error **errp) 1031 { 1032 S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque; 1033 const S390FeatGroupDef *def = s390_feat_group_def(group); 1034 S390CPU *cpu = S390_CPU(obj); 1035 S390FeatBitmap tmp; 1036 bool value; 1037 1038 if (!cpu->model) { 1039 error_setg(errp, "Details about the host CPU model are not available, " 1040 "features cannot be queried."); 1041 return; 1042 } 1043 1044 /* a group is enabled if all features are enabled */ 1045 bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX); 1046 value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX); 1047 visit_type_bool(v, name, &value, errp); 1048 } 1049 1050 static void set_feature_group(Object *obj, Visitor *v, const char *name, 1051 void *opaque, Error **errp) 1052 { 1053 S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque; 1054 const S390FeatGroupDef *def = s390_feat_group_def(group); 1055 DeviceState *dev = DEVICE(obj); 1056 S390CPU *cpu = S390_CPU(obj); 1057 bool value; 1058 1059 if (dev->realized) { 1060 error_setg(errp, "Attempt to set property '%s' on '%s' after " 1061 "it was realized", name, object_get_typename(obj)); 1062 return; 1063 } else if (!cpu->model) { 1064 error_setg(errp, "Details about the host CPU model are not available, " 1065 "features cannot be changed."); 1066 return; 1067 } 1068 1069 if (!visit_type_bool(v, name, &value, errp)) { 1070 return; 1071 } 1072 if (value) { 1073 /* groups are added in one shot, so an intersect is sufficient */ 1074 if (!bitmap_intersects(def->feat, cpu->model->def->full_feat, 1075 S390_FEAT_MAX)) { 1076 error_setg(errp, "Group '%s' is not available for CPU model '%s'," 1077 " it was introduced with later models.", 1078 name, cpu->model->def->name); 1079 return; 1080 } 1081 bitmap_or(cpu->model->features, cpu->model->features, def->feat, 1082 S390_FEAT_MAX); 1083 } else { 1084 bitmap_andnot(cpu->model->features, cpu->model->features, def->feat, 1085 S390_FEAT_MAX); 1086 } 1087 } 1088 1089 static void s390_cpu_model_initfn(Object *obj) 1090 { 1091 S390CPU *cpu = S390_CPU(obj); 1092 S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu); 1093 1094 cpu->model = g_malloc0(sizeof(*cpu->model)); 1095 /* copy the model, so we can modify it */ 1096 cpu->model->def = xcc->cpu_def; 1097 if (xcc->is_static) { 1098 /* base model - features will never change */ 1099 bitmap_copy(cpu->model->features, cpu->model->def->base_feat, 1100 S390_FEAT_MAX); 1101 } else { 1102 /* latest model - features can change */ 1103 bitmap_copy(cpu->model->features, 1104 cpu->model->def->default_feat, S390_FEAT_MAX); 1105 } 1106 } 1107 1108 static S390CPUDef s390_qemu_cpu_def; 1109 static S390CPUModel s390_qemu_cpu_model; 1110 1111 /* Set the qemu CPU model (on machine initialization). Must not be called 1112 * once CPUs have been created. 1113 */ 1114 void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga, 1115 const S390FeatInit feat_init) 1116 { 1117 const S390CPUDef *def = s390_find_cpu_def(type, gen, ec_ga, NULL); 1118 1119 g_assert(def); 1120 g_assert(QTAILQ_EMPTY_RCU(&cpus)); 1121 1122 /* TCG emulates some features that can usually not be enabled with 1123 * the emulated machine generation. Make sure they can be enabled 1124 * when using the QEMU model by adding them to full_feat. We have 1125 * to copy the definition to do that. 1126 */ 1127 memcpy(&s390_qemu_cpu_def, def, sizeof(s390_qemu_cpu_def)); 1128 bitmap_or(s390_qemu_cpu_def.full_feat, s390_qemu_cpu_def.full_feat, 1129 qemu_max_cpu_feat, S390_FEAT_MAX); 1130 1131 /* build the CPU model */ 1132 s390_qemu_cpu_model.def = &s390_qemu_cpu_def; 1133 bitmap_zero(s390_qemu_cpu_model.features, S390_FEAT_MAX); 1134 s390_init_feat_bitmap(feat_init, s390_qemu_cpu_model.features); 1135 } 1136 1137 static void s390_qemu_cpu_model_initfn(Object *obj) 1138 { 1139 S390CPU *cpu = S390_CPU(obj); 1140 1141 cpu->model = g_malloc0(sizeof(*cpu->model)); 1142 /* copy the CPU model so we can modify it */ 1143 memcpy(cpu->model, &s390_qemu_cpu_model, sizeof(*cpu->model)); 1144 } 1145 1146 static void s390_max_cpu_model_initfn(Object *obj) 1147 { 1148 const S390CPUModel *max_model; 1149 S390CPU *cpu = S390_CPU(obj); 1150 Error *local_err = NULL; 1151 1152 if (kvm_enabled() && !kvm_s390_cpu_models_supported()) { 1153 /* "max" and "host" always work, even without CPU model support */ 1154 return; 1155 } 1156 1157 max_model = get_max_cpu_model(&local_err); 1158 if (local_err) { 1159 /* we expect errors only under KVM, when actually querying the kernel */ 1160 g_assert(kvm_enabled()); 1161 error_report_err(local_err); 1162 /* fallback to unsupported CPU models */ 1163 return; 1164 } 1165 1166 cpu->model = g_new(S390CPUModel, 1); 1167 /* copy the CPU model so we can modify it */ 1168 memcpy(cpu->model, max_model, sizeof(*cpu->model)); 1169 } 1170 1171 static void s390_cpu_model_finalize(Object *obj) 1172 { 1173 S390CPU *cpu = S390_CPU(obj); 1174 1175 g_free(cpu->model); 1176 cpu->model = NULL; 1177 } 1178 1179 static bool get_is_migration_safe(Object *obj, Error **errp) 1180 { 1181 return S390_CPU_GET_CLASS(obj)->is_migration_safe; 1182 } 1183 1184 static bool get_is_static(Object *obj, Error **errp) 1185 { 1186 return S390_CPU_GET_CLASS(obj)->is_static; 1187 } 1188 1189 static char *get_description(Object *obj, Error **errp) 1190 { 1191 return g_strdup(S390_CPU_GET_CLASS(obj)->desc); 1192 } 1193 1194 void s390_cpu_model_class_register_props(ObjectClass *oc) 1195 { 1196 S390FeatGroup group; 1197 S390Feat feat; 1198 1199 object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe, 1200 NULL); 1201 object_class_property_add_bool(oc, "static", get_is_static, 1202 NULL); 1203 object_class_property_add_str(oc, "description", get_description, NULL); 1204 1205 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 1206 const S390FeatDef *def = s390_feat_def(feat); 1207 object_class_property_add(oc, def->name, "bool", get_feature, 1208 set_feature, NULL, (void *) feat); 1209 object_class_property_set_description(oc, def->name, def->desc); 1210 } 1211 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 1212 const S390FeatGroupDef *def = s390_feat_group_def(group); 1213 object_class_property_add(oc, def->name, "bool", get_feature_group, 1214 set_feature_group, NULL, (void *) group); 1215 object_class_property_set_description(oc, def->name, def->desc); 1216 } 1217 } 1218 1219 #ifdef CONFIG_KVM 1220 static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data) 1221 { 1222 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1223 1224 xcc->kvm_required = true; 1225 xcc->desc = "KVM only: All recognized features"; 1226 } 1227 #endif 1228 1229 static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data) 1230 { 1231 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1232 1233 /* all base models are migration safe */ 1234 xcc->cpu_def = (const S390CPUDef *) data; 1235 xcc->is_migration_safe = true; 1236 xcc->is_static = true; 1237 xcc->desc = xcc->cpu_def->desc; 1238 } 1239 1240 static void s390_cpu_model_class_init(ObjectClass *oc, void *data) 1241 { 1242 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1243 1244 /* model that can change between QEMU versions */ 1245 xcc->cpu_def = (const S390CPUDef *) data; 1246 xcc->is_migration_safe = true; 1247 xcc->desc = xcc->cpu_def->desc; 1248 } 1249 1250 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data) 1251 { 1252 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1253 1254 xcc->is_migration_safe = true; 1255 xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s", 1256 qemu_hw_version()); 1257 } 1258 1259 static void s390_max_cpu_model_class_init(ObjectClass *oc, void *data) 1260 { 1261 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1262 1263 /* 1264 * The "max" model is neither static nor migration safe. Under KVM 1265 * it represents the "host" model. Under TCG it represents some kind of 1266 * "qemu" CPU model without compat handling and maybe with some additional 1267 * CPU features that are not yet unlocked in the "qemu" model. 1268 */ 1269 xcc->desc = 1270 "Enables all features supported by the accelerator in the current host"; 1271 } 1272 1273 /* Generate type name for a cpu model. Caller has to free the string. */ 1274 static char *s390_cpu_type_name(const char *model_name) 1275 { 1276 return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name); 1277 } 1278 1279 /* Generate type name for a base cpu model. Caller has to free the string. */ 1280 static char *s390_base_cpu_type_name(const char *model_name) 1281 { 1282 return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name); 1283 } 1284 1285 ObjectClass *s390_cpu_class_by_name(const char *name) 1286 { 1287 char *typename = s390_cpu_type_name(name); 1288 ObjectClass *oc; 1289 1290 oc = object_class_by_name(typename); 1291 g_free(typename); 1292 return oc; 1293 } 1294 1295 static const TypeInfo qemu_s390_cpu_type_info = { 1296 .name = S390_CPU_TYPE_NAME("qemu"), 1297 .parent = TYPE_S390_CPU, 1298 .instance_init = s390_qemu_cpu_model_initfn, 1299 .instance_finalize = s390_cpu_model_finalize, 1300 .class_init = s390_qemu_cpu_model_class_init, 1301 }; 1302 1303 static const TypeInfo max_s390_cpu_type_info = { 1304 .name = S390_CPU_TYPE_NAME("max"), 1305 .parent = TYPE_S390_CPU, 1306 .instance_init = s390_max_cpu_model_initfn, 1307 .instance_finalize = s390_cpu_model_finalize, 1308 .class_init = s390_max_cpu_model_class_init, 1309 }; 1310 1311 #ifdef CONFIG_KVM 1312 static const TypeInfo host_s390_cpu_type_info = { 1313 .name = S390_CPU_TYPE_NAME("host"), 1314 .parent = S390_CPU_TYPE_NAME("max"), 1315 .class_init = s390_host_cpu_model_class_init, 1316 }; 1317 #endif 1318 1319 static void init_ignored_base_feat(void) 1320 { 1321 static const int feats[] = { 1322 /* MSA subfunctions that could not be available on certain machines */ 1323 S390_FEAT_KMAC_DEA, 1324 S390_FEAT_KMAC_TDEA_128, 1325 S390_FEAT_KMAC_TDEA_192, 1326 S390_FEAT_KMC_DEA, 1327 S390_FEAT_KMC_TDEA_128, 1328 S390_FEAT_KMC_TDEA_192, 1329 S390_FEAT_KM_DEA, 1330 S390_FEAT_KM_TDEA_128, 1331 S390_FEAT_KM_TDEA_192, 1332 S390_FEAT_KIMD_SHA_1, 1333 S390_FEAT_KLMD_SHA_1, 1334 /* CSSKE is deprecated on newer generations */ 1335 S390_FEAT_CONDITIONAL_SSKE, 1336 }; 1337 int i; 1338 1339 for (i = 0; i < ARRAY_SIZE(feats); i++) { 1340 set_bit(feats[i], ignored_base_feat); 1341 } 1342 } 1343 1344 static void register_types(void) 1345 { 1346 static const S390FeatInit qemu_latest_init = { S390_FEAT_LIST_QEMU_LATEST }; 1347 int i; 1348 1349 init_ignored_base_feat(); 1350 1351 /* init all bitmaps from gnerated data initially */ 1352 s390_init_feat_bitmap(qemu_max_cpu_feat_init, qemu_max_cpu_feat); 1353 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 1354 s390_init_feat_bitmap(s390_cpu_defs[i].base_init, 1355 s390_cpu_defs[i].base_feat); 1356 s390_init_feat_bitmap(s390_cpu_defs[i].default_init, 1357 s390_cpu_defs[i].default_feat); 1358 s390_init_feat_bitmap(s390_cpu_defs[i].full_init, 1359 s390_cpu_defs[i].full_feat); 1360 } 1361 1362 /* initialize the qemu model with latest definition */ 1363 s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 1364 QEMU_MAX_CPU_EC_GA, qemu_latest_init); 1365 1366 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 1367 char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name); 1368 TypeInfo ti_base = { 1369 .name = base_name, 1370 .parent = TYPE_S390_CPU, 1371 .instance_init = s390_cpu_model_initfn, 1372 .instance_finalize = s390_cpu_model_finalize, 1373 .class_init = s390_base_cpu_model_class_init, 1374 .class_data = (void *) &s390_cpu_defs[i], 1375 }; 1376 char *name = s390_cpu_type_name(s390_cpu_defs[i].name); 1377 TypeInfo ti = { 1378 .name = name, 1379 .parent = TYPE_S390_CPU, 1380 .instance_init = s390_cpu_model_initfn, 1381 .instance_finalize = s390_cpu_model_finalize, 1382 .class_init = s390_cpu_model_class_init, 1383 .class_data = (void *) &s390_cpu_defs[i], 1384 }; 1385 1386 type_register_static(&ti_base); 1387 type_register_static(&ti); 1388 g_free(base_name); 1389 g_free(name); 1390 } 1391 1392 type_register_static(&qemu_s390_cpu_type_info); 1393 type_register_static(&max_s390_cpu_type_info); 1394 #ifdef CONFIG_KVM 1395 type_register_static(&host_s390_cpu_type_info); 1396 #endif 1397 } 1398 1399 type_init(register_types) 1400