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 CpuDefinitionInfo *info; 452 char *name = g_strdup(object_class_get_name(klass)); 453 S390CPUClass *scc = S390_CPU_CLASS(klass); 454 455 /* strip off the -s390x-cpu */ 456 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; 457 info = g_new0(CpuDefinitionInfo, 1); 458 info->name = name; 459 info->has_migration_safe = true; 460 info->migration_safe = scc->is_migration_safe; 461 info->q_static = scc->is_static; 462 info->q_typename = g_strdup(object_class_get_name(klass)); 463 /* check for unavailable features */ 464 if (cpu_list_data->model) { 465 Object *obj; 466 S390CPU *sc; 467 obj = object_new_with_class(klass); 468 sc = S390_CPU(obj); 469 if (sc->model) { 470 info->has_unavailable_features = true; 471 check_unavailable_features(cpu_list_data->model, sc->model, 472 &info->unavailable_features); 473 } 474 object_unref(obj); 475 } 476 477 QAPI_LIST_PREPEND(*cpu_list, info); 478 } 479 480 CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp) 481 { 482 struct CpuDefinitionInfoListData list_data = { 483 .list = NULL, 484 }; 485 486 list_data.model = get_max_cpu_model(NULL); 487 488 object_class_foreach(create_cpu_model_list, TYPE_S390_CPU, false, 489 &list_data); 490 491 return list_data.list; 492 } 493 494 static void cpu_model_from_info(S390CPUModel *model, const CpuModelInfo *info, 495 Error **errp) 496 { 497 Error *err = NULL; 498 const QDict *qdict = NULL; 499 const QDictEntry *e; 500 Visitor *visitor; 501 ObjectClass *oc; 502 S390CPU *cpu; 503 Object *obj; 504 505 if (info->props) { 506 qdict = qobject_to(QDict, info->props); 507 if (!qdict) { 508 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict"); 509 return; 510 } 511 } 512 513 oc = cpu_class_by_name(TYPE_S390_CPU, info->name); 514 if (!oc) { 515 error_setg(errp, "The CPU definition \'%s\' is unknown.", info->name); 516 return; 517 } 518 if (S390_CPU_CLASS(oc)->kvm_required && !kvm_enabled()) { 519 error_setg(errp, "The CPU definition '%s' requires KVM", info->name); 520 return; 521 } 522 obj = object_new_with_class(oc); 523 cpu = S390_CPU(obj); 524 525 if (!cpu->model) { 526 error_setg(errp, "Details about the host CPU model are not available, " 527 "it cannot be used."); 528 object_unref(obj); 529 return; 530 } 531 532 if (qdict) { 533 visitor = qobject_input_visitor_new(info->props); 534 if (!visit_start_struct(visitor, NULL, NULL, 0, errp)) { 535 visit_free(visitor); 536 object_unref(obj); 537 return; 538 } 539 for (e = qdict_first(qdict); e; e = qdict_next(qdict, e)) { 540 if (!object_property_set(obj, e->key, visitor, &err)) { 541 break; 542 } 543 } 544 if (!err) { 545 visit_check_struct(visitor, &err); 546 } 547 visit_end_struct(visitor, NULL); 548 visit_free(visitor); 549 if (err) { 550 error_propagate(errp, err); 551 object_unref(obj); 552 return; 553 } 554 } 555 556 /* copy the model and throw the cpu away */ 557 memcpy(model, cpu->model, sizeof(*model)); 558 object_unref(obj); 559 } 560 561 static void qdict_add_disabled_feat(const char *name, void *opaque) 562 { 563 qdict_put_bool(opaque, name, false); 564 } 565 566 static void qdict_add_enabled_feat(const char *name, void *opaque) 567 { 568 qdict_put_bool(opaque, name, true); 569 } 570 571 /* convert S390CPUDef into a static CpuModelInfo */ 572 static void cpu_info_from_model(CpuModelInfo *info, const S390CPUModel *model, 573 bool delta_changes) 574 { 575 QDict *qdict = qdict_new(); 576 S390FeatBitmap bitmap; 577 578 /* always fallback to the static base model */ 579 info->name = g_strdup_printf("%s-base", model->def->name); 580 581 if (delta_changes) { 582 /* features deleted from the base feature set */ 583 bitmap_andnot(bitmap, model->def->base_feat, model->features, 584 S390_FEAT_MAX); 585 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) { 586 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat); 587 } 588 589 /* features added to the base feature set */ 590 bitmap_andnot(bitmap, model->features, model->def->base_feat, 591 S390_FEAT_MAX); 592 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) { 593 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_enabled_feat); 594 } 595 } else { 596 /* expand all features */ 597 s390_feat_bitmap_to_ascii(model->features, qdict, 598 qdict_add_enabled_feat); 599 bitmap_complement(bitmap, model->features, S390_FEAT_MAX); 600 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat); 601 } 602 603 if (!qdict_size(qdict)) { 604 qobject_unref(qdict); 605 } else { 606 info->props = QOBJECT(qdict); 607 info->has_props = true; 608 } 609 } 610 611 CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type, 612 CpuModelInfo *model, 613 Error **errp) 614 { 615 Error *err = NULL; 616 CpuModelExpansionInfo *expansion_info = NULL; 617 S390CPUModel s390_model; 618 bool delta_changes = false; 619 620 /* convert it to our internal representation */ 621 cpu_model_from_info(&s390_model, model, &err); 622 if (err) { 623 error_propagate(errp, err); 624 return NULL; 625 } 626 627 if (type == CPU_MODEL_EXPANSION_TYPE_STATIC) { 628 delta_changes = true; 629 } else if (type != CPU_MODEL_EXPANSION_TYPE_FULL) { 630 error_setg(errp, "The requested expansion type is not supported."); 631 return NULL; 632 } 633 634 /* convert it back to a static representation */ 635 expansion_info = g_new0(CpuModelExpansionInfo, 1); 636 expansion_info->model = g_malloc0(sizeof(*expansion_info->model)); 637 cpu_info_from_model(expansion_info->model, &s390_model, delta_changes); 638 return expansion_info; 639 } 640 641 static void list_add_feat(const char *name, void *opaque) 642 { 643 strList **last = (strList **) opaque; 644 645 QAPI_LIST_PREPEND(*last, g_strdup(name)); 646 } 647 648 CpuModelCompareInfo *qmp_query_cpu_model_comparison(CpuModelInfo *infoa, 649 CpuModelInfo *infob, 650 Error **errp) 651 { 652 Error *err = NULL; 653 CpuModelCompareResult feat_result, gen_result; 654 CpuModelCompareInfo *compare_info; 655 S390FeatBitmap missing, added; 656 S390CPUModel modela, modelb; 657 658 /* convert both models to our internal representation */ 659 cpu_model_from_info(&modela, infoa, &err); 660 if (err) { 661 error_propagate(errp, err); 662 return NULL; 663 } 664 cpu_model_from_info(&modelb, infob, &err); 665 if (err) { 666 error_propagate(errp, err); 667 return NULL; 668 } 669 compare_info = g_new0(CpuModelCompareInfo, 1); 670 671 /* check the cpu generation and ga level */ 672 if (modela.def->gen == modelb.def->gen) { 673 if (modela.def->ec_ga == modelb.def->ec_ga) { 674 /* ec and corresponding bc are identical */ 675 gen_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; 676 } else if (modela.def->ec_ga < modelb.def->ec_ga) { 677 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 678 } else { 679 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 680 } 681 } else if (modela.def->gen < modelb.def->gen) { 682 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 683 } else { 684 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 685 } 686 if (gen_result != CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 687 /* both models cannot be made identical */ 688 list_add_feat("type", &compare_info->responsible_properties); 689 } 690 691 /* check the feature set */ 692 if (bitmap_equal(modela.features, modelb.features, S390_FEAT_MAX)) { 693 feat_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; 694 } else { 695 bitmap_andnot(missing, modela.features, modelb.features, S390_FEAT_MAX); 696 s390_feat_bitmap_to_ascii(missing, 697 &compare_info->responsible_properties, 698 list_add_feat); 699 bitmap_andnot(added, modelb.features, modela.features, S390_FEAT_MAX); 700 s390_feat_bitmap_to_ascii(added, &compare_info->responsible_properties, 701 list_add_feat); 702 if (bitmap_empty(missing, S390_FEAT_MAX)) { 703 feat_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 704 } else if (bitmap_empty(added, S390_FEAT_MAX)) { 705 feat_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 706 } else { 707 feat_result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; 708 } 709 } 710 711 /* combine the results */ 712 if (gen_result == feat_result) { 713 compare_info->result = gen_result; 714 } else if (feat_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 715 compare_info->result = gen_result; 716 } else if (gen_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 717 compare_info->result = feat_result; 718 } else { 719 compare_info->result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; 720 } 721 return compare_info; 722 } 723 724 CpuModelBaselineInfo *qmp_query_cpu_model_baseline(CpuModelInfo *infoa, 725 CpuModelInfo *infob, 726 Error **errp) 727 { 728 Error *err = NULL; 729 CpuModelBaselineInfo *baseline_info; 730 S390CPUModel modela, modelb, model; 731 uint16_t cpu_type; 732 uint8_t max_gen_ga; 733 uint8_t max_gen; 734 735 /* convert both models to our internal representation */ 736 cpu_model_from_info(&modela, infoa, &err); 737 if (err) { 738 error_propagate(errp, err); 739 return NULL; 740 } 741 742 cpu_model_from_info(&modelb, infob, &err); 743 if (err) { 744 error_propagate(errp, err); 745 return NULL; 746 } 747 748 /* features both models support */ 749 bitmap_and(model.features, modela.features, modelb.features, S390_FEAT_MAX); 750 751 /* detect the maximum model not regarding features */ 752 if (modela.def->gen == modelb.def->gen) { 753 if (modela.def->type == modelb.def->type) { 754 cpu_type = modela.def->type; 755 } else { 756 cpu_type = 0; 757 } 758 max_gen = modela.def->gen; 759 max_gen_ga = MIN(modela.def->ec_ga, modelb.def->ec_ga); 760 } else if (modela.def->gen > modelb.def->gen) { 761 cpu_type = modelb.def->type; 762 max_gen = modelb.def->gen; 763 max_gen_ga = modelb.def->ec_ga; 764 } else { 765 cpu_type = modela.def->type; 766 max_gen = modela.def->gen; 767 max_gen_ga = modela.def->ec_ga; 768 } 769 770 model.def = s390_find_cpu_def(cpu_type, max_gen, max_gen_ga, 771 model.features); 772 773 /* models without early base features (esan3) are bad */ 774 if (!model.def) { 775 error_setg(errp, "No compatible CPU model could be created as" 776 " important base features are disabled"); 777 return NULL; 778 } 779 780 /* strip off features not part of the max model */ 781 bitmap_and(model.features, model.features, model.def->full_feat, 782 S390_FEAT_MAX); 783 784 baseline_info = g_new0(CpuModelBaselineInfo, 1); 785 baseline_info->model = g_malloc0(sizeof(*baseline_info->model)); 786 cpu_info_from_model(baseline_info->model, &model, true); 787 return baseline_info; 788 } 789 #endif 790 791 static void check_consistency(const S390CPUModel *model) 792 { 793 static int dep[][2] = { 794 { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH }, 795 { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH }, 796 { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH }, 797 { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT }, 798 { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH}, 799 { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT }, 800 { S390_FEAT_DFP_FAST, S390_FEAT_DFP }, 801 { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 }, 802 { S390_FEAT_EDAT_2, S390_FEAT_EDAT}, 803 { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 }, 804 { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 }, 805 { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 }, 806 { S390_FEAT_SIE_CMMA, S390_FEAT_CMM }, 807 { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS }, 808 { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT }, 809 { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 }, 810 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_3 }, 811 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_4 }, 812 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 813 { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR }, 814 { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR }, 815 { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 816 { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP }, 817 { S390_FEAT_CMM_NT, S390_FEAT_CMM }, 818 { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 819 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST }, 820 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 821 { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 }, 822 { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA }, 823 { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA }, 824 { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA }, 825 { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA }, 826 { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA }, 827 { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA }, 828 { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA }, 829 { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA }, 830 { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA }, 831 { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA }, 832 { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA }, 833 { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA }, 834 { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 }, 835 { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 }, 836 { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 }, 837 { S390_FEAT_AP_QUERY_CONFIG_INFO, S390_FEAT_AP }, 838 { S390_FEAT_AP_FACILITIES_TEST, S390_FEAT_AP }, 839 { S390_FEAT_PTFF_QSIE, S390_FEAT_MULTIPLE_EPOCH }, 840 { S390_FEAT_PTFF_QTOUE, S390_FEAT_MULTIPLE_EPOCH }, 841 { S390_FEAT_PTFF_STOE, S390_FEAT_MULTIPLE_EPOCH }, 842 { S390_FEAT_PTFF_STOUE, S390_FEAT_MULTIPLE_EPOCH }, 843 { S390_FEAT_AP_QUEUE_INTERRUPT_CONTROL, S390_FEAT_AP }, 844 { S390_FEAT_DIAG_318, S390_FEAT_EXTENDED_LENGTH_SCCB }, 845 }; 846 int i; 847 848 for (i = 0; i < ARRAY_SIZE(dep); i++) { 849 if (test_bit(dep[i][0], model->features) && 850 !test_bit(dep[i][1], model->features)) { 851 warn_report("\'%s\' requires \'%s\'.", 852 s390_feat_def(dep[i][0])->name, 853 s390_feat_def(dep[i][1])->name); 854 } 855 } 856 } 857 858 static void error_prepend_missing_feat(const char *name, void *opaque) 859 { 860 error_prepend((Error **) opaque, "%s ", name); 861 } 862 863 static void check_compatibility(const S390CPUModel *max_model, 864 const S390CPUModel *model, Error **errp) 865 { 866 S390FeatBitmap missing; 867 868 if (model->def->gen > max_model->def->gen) { 869 error_setg(errp, "Selected CPU generation is too new. Maximum " 870 "supported model in the configuration: \'%s\'", 871 max_model->def->name); 872 return; 873 } else if (model->def->gen == max_model->def->gen && 874 model->def->ec_ga > max_model->def->ec_ga) { 875 error_setg(errp, "Selected CPU GA level is too new. Maximum " 876 "supported model in the configuration: \'%s\'", 877 max_model->def->name); 878 return; 879 } 880 881 /* detect the missing features to properly report them */ 882 bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX); 883 if (bitmap_empty(missing, S390_FEAT_MAX)) { 884 return; 885 } 886 887 error_setg(errp, " "); 888 s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat); 889 error_prepend(errp, "Some features requested in the CPU model are not " 890 "available in the configuration: "); 891 } 892 893 static S390CPUModel *get_max_cpu_model(Error **errp) 894 { 895 Error *err = NULL; 896 static S390CPUModel max_model; 897 static bool cached; 898 899 if (cached) { 900 return &max_model; 901 } 902 903 if (kvm_enabled()) { 904 kvm_s390_get_host_cpu_model(&max_model, &err); 905 } else { 906 max_model.def = s390_find_cpu_def(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 907 QEMU_MAX_CPU_EC_GA, NULL); 908 bitmap_copy(max_model.features, qemu_max_cpu_feat, S390_FEAT_MAX); 909 } 910 if (err) { 911 error_propagate(errp, err); 912 return NULL; 913 } 914 cached = true; 915 return &max_model; 916 } 917 918 static inline void apply_cpu_model(const S390CPUModel *model, Error **errp) 919 { 920 #ifndef CONFIG_USER_ONLY 921 Error *err = NULL; 922 static S390CPUModel applied_model; 923 static bool applied; 924 925 /* 926 * We have the same model for all VCPUs. KVM can only be configured before 927 * any VCPUs are defined in KVM. 928 */ 929 if (applied) { 930 if (model && memcmp(&applied_model, model, sizeof(S390CPUModel))) { 931 error_setg(errp, "Mixed CPU models are not supported on s390x."); 932 } 933 return; 934 } 935 936 if (kvm_enabled()) { 937 kvm_s390_apply_cpu_model(model, &err); 938 if (err) { 939 error_propagate(errp, err); 940 return; 941 } 942 } 943 944 applied = true; 945 if (model) { 946 applied_model = *model; 947 } 948 #endif 949 } 950 951 void s390_realize_cpu_model(CPUState *cs, Error **errp) 952 { 953 Error *err = NULL; 954 S390CPUClass *xcc = S390_CPU_GET_CLASS(cs); 955 S390CPU *cpu = S390_CPU(cs); 956 const S390CPUModel *max_model; 957 958 if (xcc->kvm_required && !kvm_enabled()) { 959 error_setg(errp, "CPU definition requires KVM"); 960 return; 961 } 962 963 if (!cpu->model) { 964 /* no host model support -> perform compatibility stuff */ 965 apply_cpu_model(NULL, errp); 966 return; 967 } 968 969 max_model = get_max_cpu_model(errp); 970 if (!max_model) { 971 error_prepend(errp, "CPU models are not available: "); 972 return; 973 } 974 975 /* copy over properties that can vary */ 976 cpu->model->lowest_ibc = max_model->lowest_ibc; 977 cpu->model->cpu_id = max_model->cpu_id; 978 cpu->model->cpu_id_format = max_model->cpu_id_format; 979 cpu->model->cpu_ver = max_model->cpu_ver; 980 981 check_consistency(cpu->model); 982 check_compatibility(max_model, cpu->model, &err); 983 if (err) { 984 error_propagate(errp, err); 985 return; 986 } 987 988 apply_cpu_model(cpu->model, errp); 989 990 #if !defined(CONFIG_USER_ONLY) 991 cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model); 992 if (tcg_enabled()) { 993 /* basic mode, write the cpu address into the first 4 bit of the ID */ 994 cpu->env.cpuid = deposit64(cpu->env.cpuid, 54, 4, cpu->env.core_id); 995 } 996 #endif 997 } 998 999 static void get_feature(Object *obj, Visitor *v, const char *name, 1000 void *opaque, Error **errp) 1001 { 1002 S390Feat feat = (S390Feat) (uintptr_t) opaque; 1003 S390CPU *cpu = S390_CPU(obj); 1004 bool value; 1005 1006 if (!cpu->model) { 1007 error_setg(errp, "Details about the host CPU model are not available, " 1008 "features cannot be queried."); 1009 return; 1010 } 1011 1012 value = test_bit(feat, cpu->model->features); 1013 visit_type_bool(v, name, &value, errp); 1014 } 1015 1016 static void set_feature(Object *obj, Visitor *v, const char *name, 1017 void *opaque, Error **errp) 1018 { 1019 S390Feat feat = (S390Feat) (uintptr_t) opaque; 1020 DeviceState *dev = DEVICE(obj); 1021 S390CPU *cpu = S390_CPU(obj); 1022 bool value; 1023 1024 if (dev->realized) { 1025 error_setg(errp, "Attempt to set property '%s' on '%s' after " 1026 "it was realized", name, object_get_typename(obj)); 1027 return; 1028 } else if (!cpu->model) { 1029 error_setg(errp, "Details about the host CPU model are not available, " 1030 "features cannot be changed."); 1031 return; 1032 } 1033 1034 if (!visit_type_bool(v, name, &value, errp)) { 1035 return; 1036 } 1037 if (value) { 1038 if (!test_bit(feat, cpu->model->def->full_feat)) { 1039 error_setg(errp, "Feature '%s' is not available for CPU model '%s'," 1040 " it was introduced with later models.", 1041 name, cpu->model->def->name); 1042 return; 1043 } 1044 set_bit(feat, cpu->model->features); 1045 } else { 1046 clear_bit(feat, cpu->model->features); 1047 } 1048 } 1049 1050 static void get_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 S390CPU *cpu = S390_CPU(obj); 1056 S390FeatBitmap tmp; 1057 bool value; 1058 1059 if (!cpu->model) { 1060 error_setg(errp, "Details about the host CPU model are not available, " 1061 "features cannot be queried."); 1062 return; 1063 } 1064 1065 /* a group is enabled if all features are enabled */ 1066 bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX); 1067 value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX); 1068 visit_type_bool(v, name, &value, errp); 1069 } 1070 1071 static void set_feature_group(Object *obj, Visitor *v, const char *name, 1072 void *opaque, Error **errp) 1073 { 1074 S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque; 1075 const S390FeatGroupDef *def = s390_feat_group_def(group); 1076 DeviceState *dev = DEVICE(obj); 1077 S390CPU *cpu = S390_CPU(obj); 1078 bool value; 1079 1080 if (dev->realized) { 1081 error_setg(errp, "Attempt to set property '%s' on '%s' after " 1082 "it was realized", name, object_get_typename(obj)); 1083 return; 1084 } else if (!cpu->model) { 1085 error_setg(errp, "Details about the host CPU model are not available, " 1086 "features cannot be changed."); 1087 return; 1088 } 1089 1090 if (!visit_type_bool(v, name, &value, errp)) { 1091 return; 1092 } 1093 if (value) { 1094 /* groups are added in one shot, so an intersect is sufficient */ 1095 if (!bitmap_intersects(def->feat, cpu->model->def->full_feat, 1096 S390_FEAT_MAX)) { 1097 error_setg(errp, "Group '%s' is not available for CPU model '%s'," 1098 " it was introduced with later models.", 1099 name, cpu->model->def->name); 1100 return; 1101 } 1102 bitmap_or(cpu->model->features, cpu->model->features, def->feat, 1103 S390_FEAT_MAX); 1104 } else { 1105 bitmap_andnot(cpu->model->features, cpu->model->features, def->feat, 1106 S390_FEAT_MAX); 1107 } 1108 } 1109 1110 static void s390_cpu_model_initfn(Object *obj) 1111 { 1112 S390CPU *cpu = S390_CPU(obj); 1113 S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu); 1114 1115 cpu->model = g_malloc0(sizeof(*cpu->model)); 1116 /* copy the model, so we can modify it */ 1117 cpu->model->def = xcc->cpu_def; 1118 if (xcc->is_static) { 1119 /* base model - features will never change */ 1120 bitmap_copy(cpu->model->features, cpu->model->def->base_feat, 1121 S390_FEAT_MAX); 1122 } else { 1123 /* latest model - features can change */ 1124 bitmap_copy(cpu->model->features, 1125 cpu->model->def->default_feat, S390_FEAT_MAX); 1126 } 1127 } 1128 1129 static S390CPUDef s390_qemu_cpu_def; 1130 static S390CPUModel s390_qemu_cpu_model; 1131 1132 /* Set the qemu CPU model (on machine initialization). Must not be called 1133 * once CPUs have been created. 1134 */ 1135 void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga, 1136 const S390FeatInit feat_init) 1137 { 1138 const S390CPUDef *def = s390_find_cpu_def(type, gen, ec_ga, NULL); 1139 1140 g_assert(def); 1141 g_assert(QTAILQ_EMPTY_RCU(&cpus)); 1142 1143 /* TCG emulates some features that can usually not be enabled with 1144 * the emulated machine generation. Make sure they can be enabled 1145 * when using the QEMU model by adding them to full_feat. We have 1146 * to copy the definition to do that. 1147 */ 1148 memcpy(&s390_qemu_cpu_def, def, sizeof(s390_qemu_cpu_def)); 1149 bitmap_or(s390_qemu_cpu_def.full_feat, s390_qemu_cpu_def.full_feat, 1150 qemu_max_cpu_feat, S390_FEAT_MAX); 1151 1152 /* build the CPU model */ 1153 s390_qemu_cpu_model.def = &s390_qemu_cpu_def; 1154 bitmap_zero(s390_qemu_cpu_model.features, S390_FEAT_MAX); 1155 s390_init_feat_bitmap(feat_init, s390_qemu_cpu_model.features); 1156 } 1157 1158 static void s390_qemu_cpu_model_initfn(Object *obj) 1159 { 1160 S390CPU *cpu = S390_CPU(obj); 1161 1162 cpu->model = g_malloc0(sizeof(*cpu->model)); 1163 /* copy the CPU model so we can modify it */ 1164 memcpy(cpu->model, &s390_qemu_cpu_model, sizeof(*cpu->model)); 1165 } 1166 1167 static void s390_max_cpu_model_initfn(Object *obj) 1168 { 1169 const S390CPUModel *max_model; 1170 S390CPU *cpu = S390_CPU(obj); 1171 Error *local_err = NULL; 1172 1173 if (kvm_enabled() && !kvm_s390_cpu_models_supported()) { 1174 /* "max" and "host" always work, even without CPU model support */ 1175 return; 1176 } 1177 1178 max_model = get_max_cpu_model(&local_err); 1179 if (local_err) { 1180 /* we expect errors only under KVM, when actually querying the kernel */ 1181 g_assert(kvm_enabled()); 1182 error_report_err(local_err); 1183 /* fallback to unsupported CPU models */ 1184 return; 1185 } 1186 1187 cpu->model = g_new(S390CPUModel, 1); 1188 /* copy the CPU model so we can modify it */ 1189 memcpy(cpu->model, max_model, sizeof(*cpu->model)); 1190 } 1191 1192 static void s390_cpu_model_finalize(Object *obj) 1193 { 1194 S390CPU *cpu = S390_CPU(obj); 1195 1196 g_free(cpu->model); 1197 cpu->model = NULL; 1198 } 1199 1200 static bool get_is_migration_safe(Object *obj, Error **errp) 1201 { 1202 return S390_CPU_GET_CLASS(obj)->is_migration_safe; 1203 } 1204 1205 static bool get_is_static(Object *obj, Error **errp) 1206 { 1207 return S390_CPU_GET_CLASS(obj)->is_static; 1208 } 1209 1210 static char *get_description(Object *obj, Error **errp) 1211 { 1212 return g_strdup(S390_CPU_GET_CLASS(obj)->desc); 1213 } 1214 1215 void s390_cpu_model_class_register_props(ObjectClass *oc) 1216 { 1217 S390FeatGroup group; 1218 S390Feat feat; 1219 1220 object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe, 1221 NULL); 1222 object_class_property_add_bool(oc, "static", get_is_static, 1223 NULL); 1224 object_class_property_add_str(oc, "description", get_description, NULL); 1225 1226 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 1227 const S390FeatDef *def = s390_feat_def(feat); 1228 object_class_property_add(oc, def->name, "bool", get_feature, 1229 set_feature, NULL, (void *) feat); 1230 object_class_property_set_description(oc, def->name, def->desc); 1231 } 1232 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 1233 const S390FeatGroupDef *def = s390_feat_group_def(group); 1234 object_class_property_add(oc, def->name, "bool", get_feature_group, 1235 set_feature_group, NULL, (void *) group); 1236 object_class_property_set_description(oc, def->name, def->desc); 1237 } 1238 } 1239 1240 #ifdef CONFIG_KVM 1241 static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data) 1242 { 1243 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1244 1245 xcc->kvm_required = true; 1246 xcc->desc = "KVM only: All recognized features"; 1247 } 1248 #endif 1249 1250 static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data) 1251 { 1252 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1253 1254 /* all base models are migration safe */ 1255 xcc->cpu_def = (const S390CPUDef *) data; 1256 xcc->is_migration_safe = true; 1257 xcc->is_static = true; 1258 xcc->desc = xcc->cpu_def->desc; 1259 } 1260 1261 static void s390_cpu_model_class_init(ObjectClass *oc, void *data) 1262 { 1263 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1264 1265 /* model that can change between QEMU versions */ 1266 xcc->cpu_def = (const S390CPUDef *) data; 1267 xcc->is_migration_safe = true; 1268 xcc->desc = xcc->cpu_def->desc; 1269 } 1270 1271 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data) 1272 { 1273 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1274 1275 xcc->is_migration_safe = true; 1276 xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s", 1277 qemu_hw_version()); 1278 } 1279 1280 static void s390_max_cpu_model_class_init(ObjectClass *oc, void *data) 1281 { 1282 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1283 1284 /* 1285 * The "max" model is neither static nor migration safe. Under KVM 1286 * it represents the "host" model. Under TCG it represents some kind of 1287 * "qemu" CPU model without compat handling and maybe with some additional 1288 * CPU features that are not yet unlocked in the "qemu" model. 1289 */ 1290 xcc->desc = 1291 "Enables all features supported by the accelerator in the current host"; 1292 } 1293 1294 /* Generate type name for a cpu model. Caller has to free the string. */ 1295 static char *s390_cpu_type_name(const char *model_name) 1296 { 1297 return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name); 1298 } 1299 1300 /* Generate type name for a base cpu model. Caller has to free the string. */ 1301 static char *s390_base_cpu_type_name(const char *model_name) 1302 { 1303 return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name); 1304 } 1305 1306 ObjectClass *s390_cpu_class_by_name(const char *name) 1307 { 1308 char *typename = s390_cpu_type_name(name); 1309 ObjectClass *oc; 1310 1311 oc = object_class_by_name(typename); 1312 g_free(typename); 1313 return oc; 1314 } 1315 1316 static const TypeInfo qemu_s390_cpu_type_info = { 1317 .name = S390_CPU_TYPE_NAME("qemu"), 1318 .parent = TYPE_S390_CPU, 1319 .instance_init = s390_qemu_cpu_model_initfn, 1320 .instance_finalize = s390_cpu_model_finalize, 1321 .class_init = s390_qemu_cpu_model_class_init, 1322 }; 1323 1324 static const TypeInfo max_s390_cpu_type_info = { 1325 .name = S390_CPU_TYPE_NAME("max"), 1326 .parent = TYPE_S390_CPU, 1327 .instance_init = s390_max_cpu_model_initfn, 1328 .instance_finalize = s390_cpu_model_finalize, 1329 .class_init = s390_max_cpu_model_class_init, 1330 }; 1331 1332 #ifdef CONFIG_KVM 1333 static const TypeInfo host_s390_cpu_type_info = { 1334 .name = S390_CPU_TYPE_NAME("host"), 1335 .parent = S390_CPU_TYPE_NAME("max"), 1336 .class_init = s390_host_cpu_model_class_init, 1337 }; 1338 #endif 1339 1340 static void init_ignored_base_feat(void) 1341 { 1342 static const int feats[] = { 1343 /* MSA subfunctions that could not be available on certain machines */ 1344 S390_FEAT_KMAC_DEA, 1345 S390_FEAT_KMAC_TDEA_128, 1346 S390_FEAT_KMAC_TDEA_192, 1347 S390_FEAT_KMC_DEA, 1348 S390_FEAT_KMC_TDEA_128, 1349 S390_FEAT_KMC_TDEA_192, 1350 S390_FEAT_KM_DEA, 1351 S390_FEAT_KM_TDEA_128, 1352 S390_FEAT_KM_TDEA_192, 1353 S390_FEAT_KIMD_SHA_1, 1354 S390_FEAT_KLMD_SHA_1, 1355 /* CSSKE is deprecated on newer generations */ 1356 S390_FEAT_CONDITIONAL_SSKE, 1357 }; 1358 int i; 1359 1360 for (i = 0; i < ARRAY_SIZE(feats); i++) { 1361 set_bit(feats[i], ignored_base_feat); 1362 } 1363 } 1364 1365 static void register_types(void) 1366 { 1367 static const S390FeatInit qemu_latest_init = { S390_FEAT_LIST_QEMU_LATEST }; 1368 int i; 1369 1370 init_ignored_base_feat(); 1371 1372 /* init all bitmaps from gnerated data initially */ 1373 s390_init_feat_bitmap(qemu_max_cpu_feat_init, qemu_max_cpu_feat); 1374 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 1375 s390_init_feat_bitmap(s390_cpu_defs[i].base_init, 1376 s390_cpu_defs[i].base_feat); 1377 s390_init_feat_bitmap(s390_cpu_defs[i].default_init, 1378 s390_cpu_defs[i].default_feat); 1379 s390_init_feat_bitmap(s390_cpu_defs[i].full_init, 1380 s390_cpu_defs[i].full_feat); 1381 } 1382 1383 /* initialize the qemu model with latest definition */ 1384 s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 1385 QEMU_MAX_CPU_EC_GA, qemu_latest_init); 1386 1387 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 1388 char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name); 1389 TypeInfo ti_base = { 1390 .name = base_name, 1391 .parent = TYPE_S390_CPU, 1392 .instance_init = s390_cpu_model_initfn, 1393 .instance_finalize = s390_cpu_model_finalize, 1394 .class_init = s390_base_cpu_model_class_init, 1395 .class_data = (void *) &s390_cpu_defs[i], 1396 }; 1397 char *name = s390_cpu_type_name(s390_cpu_defs[i].name); 1398 TypeInfo ti = { 1399 .name = name, 1400 .parent = TYPE_S390_CPU, 1401 .instance_init = s390_cpu_model_initfn, 1402 .instance_finalize = s390_cpu_model_finalize, 1403 .class_init = s390_cpu_model_class_init, 1404 .class_data = (void *) &s390_cpu_defs[i], 1405 }; 1406 1407 type_register_static(&ti_base); 1408 type_register_static(&ti); 1409 g_free(base_name); 1410 g_free(name); 1411 } 1412 1413 type_register_static(&qemu_s390_cpu_type_info); 1414 type_register_static(&max_s390_cpu_type_info); 1415 #ifdef CONFIG_KVM 1416 type_register_static(&host_s390_cpu_type_info); 1417 #endif 1418 } 1419 1420 type_init(register_types) 1421