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 "sysemu/sysemu.h" 30 #include "hw/pci/pci.h" 31 #endif 32 #include "qapi/qapi-commands-machine-target.h" 33 #include "hw/s390x/pv.h" 34 35 #define CPUDEF_INIT(_type, _gen, _ec_ga, _mha_pow, _hmfai, _name, _desc) \ 36 { \ 37 .name = _name, \ 38 .type = _type, \ 39 .gen = _gen, \ 40 .ec_ga = _ec_ga, \ 41 .mha_pow = _mha_pow, \ 42 .hmfai = _hmfai, \ 43 .desc = _desc, \ 44 .base_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _BASE }, \ 45 .default_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _DEFAULT }, \ 46 .full_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _FULL }, \ 47 } 48 49 /* 50 * CPU definition list in order of release. Up to generation 14 base features 51 * of a following release have been a superset of the previous release. With 52 * generation 15 one base feature and one optional feature have been deprecated. 53 */ 54 static S390CPUDef s390_cpu_defs[] = { 55 CPUDEF_INIT(0x2064, 7, 1, 38, 0x00000000U, "z900", "IBM zSeries 900 GA1"), 56 CPUDEF_INIT(0x2064, 7, 2, 38, 0x00000000U, "z900.2", "IBM zSeries 900 GA2"), 57 CPUDEF_INIT(0x2064, 7, 3, 38, 0x00000000U, "z900.3", "IBM zSeries 900 GA3"), 58 CPUDEF_INIT(0x2066, 7, 3, 38, 0x00000000U, "z800", "IBM zSeries 800 GA1"), 59 CPUDEF_INIT(0x2084, 8, 1, 38, 0x00000000U, "z990", "IBM zSeries 990 GA1"), 60 CPUDEF_INIT(0x2084, 8, 2, 38, 0x00000000U, "z990.2", "IBM zSeries 990 GA2"), 61 CPUDEF_INIT(0x2084, 8, 3, 38, 0x00000000U, "z990.3", "IBM zSeries 990 GA3"), 62 CPUDEF_INIT(0x2086, 8, 3, 38, 0x00000000U, "z890", "IBM zSeries 880 GA1"), 63 CPUDEF_INIT(0x2084, 8, 4, 38, 0x00000000U, "z990.4", "IBM zSeries 990 GA4"), 64 CPUDEF_INIT(0x2086, 8, 4, 38, 0x00000000U, "z890.2", "IBM zSeries 880 GA2"), 65 CPUDEF_INIT(0x2084, 8, 5, 38, 0x00000000U, "z990.5", "IBM zSeries 990 GA5"), 66 CPUDEF_INIT(0x2086, 8, 5, 38, 0x00000000U, "z890.3", "IBM zSeries 880 GA3"), 67 CPUDEF_INIT(0x2094, 9, 1, 40, 0x00000000U, "z9EC", "IBM System z9 EC GA1"), 68 CPUDEF_INIT(0x2094, 9, 2, 40, 0x00000000U, "z9EC.2", "IBM System z9 EC GA2"), 69 CPUDEF_INIT(0x2096, 9, 2, 40, 0x00000000U, "z9BC", "IBM System z9 BC GA1"), 70 CPUDEF_INIT(0x2094, 9, 3, 40, 0x00000000U, "z9EC.3", "IBM System z9 EC GA3"), 71 CPUDEF_INIT(0x2096, 9, 3, 40, 0x00000000U, "z9BC.2", "IBM System z9 BC GA2"), 72 CPUDEF_INIT(0x2097, 10, 1, 43, 0x00000000U, "z10EC", "IBM System z10 EC GA1"), 73 CPUDEF_INIT(0x2097, 10, 2, 43, 0x00000000U, "z10EC.2", "IBM System z10 EC GA2"), 74 CPUDEF_INIT(0x2098, 10, 2, 43, 0x00000000U, "z10BC", "IBM System z10 BC GA1"), 75 CPUDEF_INIT(0x2097, 10, 3, 43, 0x00000000U, "z10EC.3", "IBM System z10 EC GA3"), 76 CPUDEF_INIT(0x2098, 10, 3, 43, 0x00000000U, "z10BC.2", "IBM System z10 BC GA2"), 77 CPUDEF_INIT(0x2817, 11, 1, 44, 0x08000000U, "z196", "IBM zEnterprise 196 GA1"), 78 CPUDEF_INIT(0x2817, 11, 2, 44, 0x08000000U, "z196.2", "IBM zEnterprise 196 GA2"), 79 CPUDEF_INIT(0x2818, 11, 2, 44, 0x08000000U, "z114", "IBM zEnterprise 114 GA1"), 80 CPUDEF_INIT(0x2827, 12, 1, 44, 0x08000000U, "zEC12", "IBM zEnterprise EC12 GA1"), 81 CPUDEF_INIT(0x2827, 12, 2, 44, 0x08000000U, "zEC12.2", "IBM zEnterprise EC12 GA2"), 82 CPUDEF_INIT(0x2828, 12, 2, 44, 0x08000000U, "zBC12", "IBM zEnterprise BC12 GA1"), 83 CPUDEF_INIT(0x2964, 13, 1, 47, 0x08000000U, "z13", "IBM z13 GA1"), 84 CPUDEF_INIT(0x2964, 13, 2, 47, 0x08000000U, "z13.2", "IBM z13 GA2"), 85 CPUDEF_INIT(0x2965, 13, 2, 47, 0x08000000U, "z13s", "IBM z13s GA1"), 86 CPUDEF_INIT(0x3906, 14, 1, 47, 0x08000000U, "z14", "IBM z14 GA1"), 87 CPUDEF_INIT(0x3906, 14, 2, 47, 0x08000000U, "z14.2", "IBM z14 GA2"), 88 CPUDEF_INIT(0x3907, 14, 1, 47, 0x08000000U, "z14ZR1", "IBM z14 Model ZR1 GA1"), 89 CPUDEF_INIT(0x8561, 15, 1, 47, 0x08000000U, "gen15a", "IBM z15 T01 GA1"), 90 CPUDEF_INIT(0x8562, 15, 1, 47, 0x08000000U, "gen15b", "IBM z15 T02 GA1"), 91 CPUDEF_INIT(0x3931, 16, 1, 47, 0x08000000U, "gen16a", "IBM 3931 GA1"), 92 CPUDEF_INIT(0x3932, 16, 1, 47, 0x08000000U, "gen16b", "IBM 3932 GA1"), 93 }; 94 95 #define QEMU_MAX_CPU_TYPE 0x3906 96 #define QEMU_MAX_CPU_GEN 14 97 #define QEMU_MAX_CPU_EC_GA 2 98 static const S390FeatInit qemu_max_cpu_feat_init = { S390_FEAT_LIST_QEMU_MAX }; 99 static S390FeatBitmap qemu_max_cpu_feat; 100 101 /* features part of a base model but not relevant for finding a base model */ 102 S390FeatBitmap ignored_base_feat; 103 104 void s390_cpudef_featoff(uint8_t gen, uint8_t ec_ga, S390Feat feat) 105 { 106 const S390CPUDef *def; 107 108 def = s390_find_cpu_def(0, gen, ec_ga, NULL); 109 clear_bit(feat, (unsigned long *)&def->default_feat); 110 } 111 112 void s390_cpudef_featoff_greater(uint8_t gen, uint8_t ec_ga, S390Feat feat) 113 { 114 int i; 115 116 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 117 const S390CPUDef *def = &s390_cpu_defs[i]; 118 119 if (def->gen < gen) { 120 continue; 121 } 122 if (def->gen == gen && def->ec_ga < ec_ga) { 123 continue; 124 } 125 126 clear_bit(feat, (unsigned long *)&def->default_feat); 127 } 128 } 129 130 void s390_cpudef_group_featoff_greater(uint8_t gen, uint8_t ec_ga, 131 S390FeatGroup group) 132 { 133 const S390FeatGroupDef *group_def = s390_feat_group_def(group); 134 S390FeatBitmap group_def_off; 135 int i; 136 137 bitmap_complement(group_def_off, group_def->feat, S390_FEAT_MAX); 138 139 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 140 const S390CPUDef *cpu_def = &s390_cpu_defs[i]; 141 142 if (cpu_def->gen < gen) { 143 continue; 144 } 145 if (cpu_def->gen == gen && cpu_def->ec_ga < ec_ga) { 146 continue; 147 } 148 149 bitmap_and((unsigned long *)&cpu_def->default_feat, 150 cpu_def->default_feat, group_def_off, S390_FEAT_MAX); 151 } 152 } 153 154 uint32_t s390_get_hmfai(void) 155 { 156 static S390CPU *cpu; 157 158 if (!cpu) { 159 cpu = S390_CPU(qemu_get_cpu(0)); 160 } 161 162 if (!cpu || !cpu->model) { 163 return 0; 164 } 165 return cpu->model->def->hmfai; 166 } 167 168 uint8_t s390_get_mha_pow(void) 169 { 170 static S390CPU *cpu; 171 172 if (!cpu) { 173 cpu = S390_CPU(qemu_get_cpu(0)); 174 } 175 176 if (!cpu || !cpu->model) { 177 return 0; 178 } 179 return cpu->model->def->mha_pow; 180 } 181 182 uint32_t s390_get_ibc_val(void) 183 { 184 uint16_t unblocked_ibc, lowest_ibc; 185 static S390CPU *cpu; 186 187 if (!cpu) { 188 cpu = S390_CPU(qemu_get_cpu(0)); 189 } 190 191 if (!cpu || !cpu->model) { 192 return 0; 193 } 194 unblocked_ibc = s390_ibc_from_cpu_model(cpu->model); 195 lowest_ibc = cpu->model->lowest_ibc; 196 /* the lowest_ibc always has to be <= unblocked_ibc */ 197 if (!lowest_ibc || lowest_ibc > unblocked_ibc) { 198 return 0; 199 } 200 return ((uint32_t) lowest_ibc << 16) | unblocked_ibc; 201 } 202 203 void s390_get_feat_block(S390FeatType type, uint8_t *data) 204 { 205 static S390CPU *cpu; 206 207 if (!cpu) { 208 cpu = S390_CPU(qemu_get_cpu(0)); 209 } 210 211 if (!cpu || !cpu->model) { 212 return; 213 } 214 s390_fill_feat_block(cpu->model->features, type, data); 215 } 216 217 bool s390_has_feat(S390Feat feat) 218 { 219 static S390CPU *cpu; 220 221 if (!cpu) { 222 cpu = S390_CPU(qemu_get_cpu(0)); 223 } 224 225 if (!cpu || !cpu->model) { 226 #ifdef CONFIG_KVM 227 if (kvm_enabled()) { 228 if (feat == S390_FEAT_VECTOR) { 229 return kvm_check_extension(kvm_state, 230 KVM_CAP_S390_VECTOR_REGISTERS); 231 } 232 if (feat == S390_FEAT_RUNTIME_INSTRUMENTATION) { 233 return kvm_s390_get_ri(); 234 } 235 if (feat == S390_FEAT_MSA_EXT_3) { 236 return true; 237 } 238 } 239 #endif 240 if (feat == S390_FEAT_ZPCI) { 241 return true; 242 } 243 return 0; 244 } 245 246 if (s390_is_pv()) { 247 switch (feat) { 248 case S390_FEAT_DIAG_318: 249 case S390_FEAT_HPMA2: 250 case S390_FEAT_SIE_F2: 251 case S390_FEAT_SIE_SKEY: 252 case S390_FEAT_SIE_GPERE: 253 case S390_FEAT_SIE_SIIF: 254 case S390_FEAT_SIE_SIGPIF: 255 case S390_FEAT_SIE_IB: 256 case S390_FEAT_SIE_CEI: 257 case S390_FEAT_SIE_KSS: 258 case S390_FEAT_SIE_GSLS: 259 case S390_FEAT_SIE_64BSCAO: 260 case S390_FEAT_SIE_CMMA: 261 case S390_FEAT_SIE_PFMFI: 262 case S390_FEAT_SIE_IBS: 263 return false; 264 break; 265 default: 266 break; 267 } 268 } 269 return test_bit(feat, cpu->model->features); 270 } 271 272 uint8_t s390_get_gen_for_cpu_type(uint16_t type) 273 { 274 int i; 275 276 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 277 if (s390_cpu_defs[i].type == type) { 278 return s390_cpu_defs[i].gen; 279 } 280 } 281 return 0; 282 } 283 284 const S390CPUDef *s390_find_cpu_def(uint16_t type, uint8_t gen, uint8_t ec_ga, 285 S390FeatBitmap features) 286 { 287 const S390CPUDef *last_compatible = NULL; 288 const S390CPUDef *matching_cpu_type = NULL; 289 int i; 290 291 if (!gen) { 292 ec_ga = 0; 293 } 294 if (!gen && type) { 295 gen = s390_get_gen_for_cpu_type(type); 296 } 297 298 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 299 const S390CPUDef *def = &s390_cpu_defs[i]; 300 S390FeatBitmap missing; 301 302 /* don't even try newer generations if we know the generation */ 303 if (gen) { 304 if (def->gen > gen) { 305 break; 306 } else if (def->gen == gen && ec_ga && def->ec_ga > ec_ga) { 307 break; 308 } 309 } 310 311 if (features) { 312 /* see if the model satisfies the minimum features */ 313 bitmap_andnot(missing, def->base_feat, features, S390_FEAT_MAX); 314 /* 315 * Ignore certain features that are in the base model, but not 316 * relevant for the search (esp. MSA subfunctions). 317 */ 318 bitmap_andnot(missing, missing, ignored_base_feat, S390_FEAT_MAX); 319 if (!bitmap_empty(missing, S390_FEAT_MAX)) { 320 break; 321 } 322 } 323 324 /* stop the search if we found the exact model */ 325 if (def->type == type && def->ec_ga == ec_ga) { 326 return def; 327 } 328 /* remember if we've at least seen one with the same cpu type */ 329 if (def->type == type) { 330 matching_cpu_type = def; 331 } 332 last_compatible = def; 333 } 334 /* prefer the model with the same cpu type, esp. don't take the BC for EC */ 335 if (matching_cpu_type) { 336 return matching_cpu_type; 337 } 338 return last_compatible; 339 } 340 341 static void s390_print_cpu_model_list_entry(gpointer data, gpointer user_data) 342 { 343 const S390CPUClass *scc = S390_CPU_CLASS((ObjectClass *)data); 344 char *name = g_strdup(object_class_get_name((ObjectClass *)data)); 345 const char *details = ""; 346 347 if (scc->is_static) { 348 details = "(static, migration-safe)"; 349 } else if (scc->is_migration_safe) { 350 details = "(migration-safe)"; 351 } 352 353 /* strip off the -s390x-cpu */ 354 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; 355 qemu_printf("s390 %-15s %-35s %s\n", name, scc->desc, details); 356 g_free(name); 357 } 358 359 static gint s390_cpu_list_compare(gconstpointer a, gconstpointer b) 360 { 361 const S390CPUClass *cc_a = S390_CPU_CLASS((ObjectClass *)a); 362 const S390CPUClass *cc_b = S390_CPU_CLASS((ObjectClass *)b); 363 const char *name_a = object_class_get_name((ObjectClass *)a); 364 const char *name_b = object_class_get_name((ObjectClass *)b); 365 366 /* 367 * Move qemu, host and max to the top of the list, qemu first, host second, 368 * max third. 369 */ 370 if (name_a[0] == 'q') { 371 return -1; 372 } else if (name_b[0] == 'q') { 373 return 1; 374 } else if (name_a[0] == 'h') { 375 return -1; 376 } else if (name_b[0] == 'h') { 377 return 1; 378 } else if (name_a[0] == 'm') { 379 return -1; 380 } else if (name_b[0] == 'm') { 381 return 1; 382 } 383 384 /* keep the same order we have in our table (sorted by release date) */ 385 if (cc_a->cpu_def != cc_b->cpu_def) { 386 return cc_a->cpu_def - cc_b->cpu_def; 387 } 388 389 /* exact same definition - list base model first */ 390 return cc_a->is_static ? -1 : 1; 391 } 392 393 void s390_cpu_list(void) 394 { 395 S390FeatGroup group; 396 S390Feat feat; 397 GSList *list; 398 399 list = object_class_get_list(TYPE_S390_CPU, false); 400 list = g_slist_sort(list, s390_cpu_list_compare); 401 g_slist_foreach(list, s390_print_cpu_model_list_entry, NULL); 402 g_slist_free(list); 403 404 qemu_printf("\nRecognized feature flags:\n"); 405 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 406 const S390FeatDef *def = s390_feat_def(feat); 407 408 qemu_printf("%-20s %-50s\n", def->name, def->desc); 409 } 410 411 qemu_printf("\nRecognized feature groups:\n"); 412 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 413 const S390FeatGroupDef *def = s390_feat_group_def(group); 414 415 qemu_printf("%-20s %-50s\n", def->name, def->desc); 416 } 417 } 418 419 static S390CPUModel *get_max_cpu_model(Error **errp); 420 421 #ifndef CONFIG_USER_ONLY 422 static void list_add_feat(const char *name, void *opaque); 423 424 static void check_unavailable_features(const S390CPUModel *max_model, 425 const S390CPUModel *model, 426 strList **unavailable) 427 { 428 S390FeatBitmap missing; 429 430 /* check general model compatibility */ 431 if (max_model->def->gen < model->def->gen || 432 (max_model->def->gen == model->def->gen && 433 max_model->def->ec_ga < model->def->ec_ga)) { 434 list_add_feat("type", unavailable); 435 } 436 437 /* detect missing features if any to properly report them */ 438 bitmap_andnot(missing, model->features, max_model->features, 439 S390_FEAT_MAX); 440 if (!bitmap_empty(missing, S390_FEAT_MAX)) { 441 s390_feat_bitmap_to_ascii(missing, unavailable, list_add_feat); 442 } 443 } 444 445 struct CpuDefinitionInfoListData { 446 CpuDefinitionInfoList *list; 447 S390CPUModel *model; 448 }; 449 450 static void create_cpu_model_list(ObjectClass *klass, void *opaque) 451 { 452 struct CpuDefinitionInfoListData *cpu_list_data = opaque; 453 CpuDefinitionInfoList **cpu_list = &cpu_list_data->list; 454 CpuDefinitionInfo *info; 455 char *name = g_strdup(object_class_get_name(klass)); 456 S390CPUClass *scc = S390_CPU_CLASS(klass); 457 458 /* strip off the -s390x-cpu */ 459 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; 460 info = g_new0(CpuDefinitionInfo, 1); 461 info->name = name; 462 info->has_migration_safe = true; 463 info->migration_safe = scc->is_migration_safe; 464 info->q_static = scc->is_static; 465 info->q_typename = g_strdup(object_class_get_name(klass)); 466 /* check for unavailable features */ 467 if (cpu_list_data->model) { 468 Object *obj; 469 S390CPU *sc; 470 obj = object_new_with_class(klass); 471 sc = S390_CPU(obj); 472 if (sc->model) { 473 info->has_unavailable_features = true; 474 check_unavailable_features(cpu_list_data->model, sc->model, 475 &info->unavailable_features); 476 } 477 object_unref(obj); 478 } 479 480 QAPI_LIST_PREPEND(*cpu_list, info); 481 } 482 483 CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp) 484 { 485 struct CpuDefinitionInfoListData list_data = { 486 .list = NULL, 487 }; 488 489 list_data.model = get_max_cpu_model(NULL); 490 491 object_class_foreach(create_cpu_model_list, TYPE_S390_CPU, false, 492 &list_data); 493 494 return list_data.list; 495 } 496 497 static void cpu_model_from_info(S390CPUModel *model, const CpuModelInfo *info, 498 Error **errp) 499 { 500 Error *err = NULL; 501 const QDict *qdict = NULL; 502 const QDictEntry *e; 503 Visitor *visitor; 504 ObjectClass *oc; 505 S390CPU *cpu; 506 Object *obj; 507 508 if (info->props) { 509 qdict = qobject_to(QDict, info->props); 510 if (!qdict) { 511 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict"); 512 return; 513 } 514 } 515 516 oc = cpu_class_by_name(TYPE_S390_CPU, info->name); 517 if (!oc) { 518 error_setg(errp, "The CPU definition \'%s\' is unknown.", info->name); 519 return; 520 } 521 if (S390_CPU_CLASS(oc)->kvm_required && !kvm_enabled()) { 522 error_setg(errp, "The CPU definition '%s' requires KVM", info->name); 523 return; 524 } 525 obj = object_new_with_class(oc); 526 cpu = S390_CPU(obj); 527 528 if (!cpu->model) { 529 error_setg(errp, "Details about the host CPU model are not available, " 530 "it cannot be used."); 531 object_unref(obj); 532 return; 533 } 534 535 if (qdict) { 536 visitor = qobject_input_visitor_new(info->props); 537 if (!visit_start_struct(visitor, NULL, NULL, 0, errp)) { 538 visit_free(visitor); 539 object_unref(obj); 540 return; 541 } 542 for (e = qdict_first(qdict); e; e = qdict_next(qdict, e)) { 543 if (!object_property_set(obj, e->key, visitor, &err)) { 544 break; 545 } 546 } 547 if (!err) { 548 visit_check_struct(visitor, &err); 549 } 550 visit_end_struct(visitor, NULL); 551 visit_free(visitor); 552 if (err) { 553 error_propagate(errp, err); 554 object_unref(obj); 555 return; 556 } 557 } 558 559 /* copy the model and throw the cpu away */ 560 memcpy(model, cpu->model, sizeof(*model)); 561 object_unref(obj); 562 } 563 564 static void qdict_add_disabled_feat(const char *name, void *opaque) 565 { 566 qdict_put_bool(opaque, name, false); 567 } 568 569 static void qdict_add_enabled_feat(const char *name, void *opaque) 570 { 571 qdict_put_bool(opaque, name, true); 572 } 573 574 /* convert S390CPUDef into a static CpuModelInfo */ 575 static void cpu_info_from_model(CpuModelInfo *info, const S390CPUModel *model, 576 bool delta_changes) 577 { 578 QDict *qdict = qdict_new(); 579 S390FeatBitmap bitmap; 580 581 /* always fallback to the static base model */ 582 info->name = g_strdup_printf("%s-base", model->def->name); 583 584 if (delta_changes) { 585 /* features deleted from the base feature set */ 586 bitmap_andnot(bitmap, model->def->base_feat, model->features, 587 S390_FEAT_MAX); 588 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) { 589 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat); 590 } 591 592 /* features added to the base feature set */ 593 bitmap_andnot(bitmap, model->features, model->def->base_feat, 594 S390_FEAT_MAX); 595 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) { 596 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_enabled_feat); 597 } 598 } else { 599 /* expand all features */ 600 s390_feat_bitmap_to_ascii(model->features, qdict, 601 qdict_add_enabled_feat); 602 bitmap_complement(bitmap, model->features, S390_FEAT_MAX); 603 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat); 604 } 605 606 if (!qdict_size(qdict)) { 607 qobject_unref(qdict); 608 } else { 609 info->props = QOBJECT(qdict); 610 info->has_props = true; 611 } 612 } 613 614 CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type, 615 CpuModelInfo *model, 616 Error **errp) 617 { 618 Error *err = NULL; 619 CpuModelExpansionInfo *expansion_info = NULL; 620 S390CPUModel s390_model; 621 bool delta_changes = false; 622 623 /* convert it to our internal representation */ 624 cpu_model_from_info(&s390_model, model, &err); 625 if (err) { 626 error_propagate(errp, err); 627 return NULL; 628 } 629 630 if (type == CPU_MODEL_EXPANSION_TYPE_STATIC) { 631 delta_changes = true; 632 } else if (type != CPU_MODEL_EXPANSION_TYPE_FULL) { 633 error_setg(errp, "The requested expansion type is not supported."); 634 return NULL; 635 } 636 637 /* convert it back to a static representation */ 638 expansion_info = g_new0(CpuModelExpansionInfo, 1); 639 expansion_info->model = g_malloc0(sizeof(*expansion_info->model)); 640 cpu_info_from_model(expansion_info->model, &s390_model, delta_changes); 641 return expansion_info; 642 } 643 644 static void list_add_feat(const char *name, void *opaque) 645 { 646 strList **last = (strList **) opaque; 647 648 QAPI_LIST_PREPEND(*last, g_strdup(name)); 649 } 650 651 CpuModelCompareInfo *qmp_query_cpu_model_comparison(CpuModelInfo *infoa, 652 CpuModelInfo *infob, 653 Error **errp) 654 { 655 Error *err = NULL; 656 CpuModelCompareResult feat_result, gen_result; 657 CpuModelCompareInfo *compare_info; 658 S390FeatBitmap missing, added; 659 S390CPUModel modela, modelb; 660 661 /* convert both models to our internal representation */ 662 cpu_model_from_info(&modela, infoa, &err); 663 if (err) { 664 error_propagate(errp, err); 665 return NULL; 666 } 667 cpu_model_from_info(&modelb, infob, &err); 668 if (err) { 669 error_propagate(errp, err); 670 return NULL; 671 } 672 compare_info = g_new0(CpuModelCompareInfo, 1); 673 674 /* check the cpu generation and ga level */ 675 if (modela.def->gen == modelb.def->gen) { 676 if (modela.def->ec_ga == modelb.def->ec_ga) { 677 /* ec and corresponding bc are identical */ 678 gen_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; 679 } else if (modela.def->ec_ga < modelb.def->ec_ga) { 680 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 681 } else { 682 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 683 } 684 } else if (modela.def->gen < modelb.def->gen) { 685 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 686 } else { 687 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 688 } 689 if (gen_result != CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 690 /* both models cannot be made identical */ 691 list_add_feat("type", &compare_info->responsible_properties); 692 } 693 694 /* check the feature set */ 695 if (bitmap_equal(modela.features, modelb.features, S390_FEAT_MAX)) { 696 feat_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; 697 } else { 698 bitmap_andnot(missing, modela.features, modelb.features, S390_FEAT_MAX); 699 s390_feat_bitmap_to_ascii(missing, 700 &compare_info->responsible_properties, 701 list_add_feat); 702 bitmap_andnot(added, modelb.features, modela.features, S390_FEAT_MAX); 703 s390_feat_bitmap_to_ascii(added, &compare_info->responsible_properties, 704 list_add_feat); 705 if (bitmap_empty(missing, S390_FEAT_MAX)) { 706 feat_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 707 } else if (bitmap_empty(added, S390_FEAT_MAX)) { 708 feat_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 709 } else { 710 feat_result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; 711 } 712 } 713 714 /* combine the results */ 715 if (gen_result == feat_result) { 716 compare_info->result = gen_result; 717 } else if (feat_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 718 compare_info->result = gen_result; 719 } else if (gen_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 720 compare_info->result = feat_result; 721 } else { 722 compare_info->result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; 723 } 724 return compare_info; 725 } 726 727 CpuModelBaselineInfo *qmp_query_cpu_model_baseline(CpuModelInfo *infoa, 728 CpuModelInfo *infob, 729 Error **errp) 730 { 731 Error *err = NULL; 732 CpuModelBaselineInfo *baseline_info; 733 S390CPUModel modela, modelb, model; 734 uint16_t cpu_type; 735 uint8_t max_gen_ga; 736 uint8_t max_gen; 737 738 /* convert both models to our internal representation */ 739 cpu_model_from_info(&modela, infoa, &err); 740 if (err) { 741 error_propagate(errp, err); 742 return NULL; 743 } 744 745 cpu_model_from_info(&modelb, infob, &err); 746 if (err) { 747 error_propagate(errp, err); 748 return NULL; 749 } 750 751 /* features both models support */ 752 bitmap_and(model.features, modela.features, modelb.features, S390_FEAT_MAX); 753 754 /* detect the maximum model not regarding features */ 755 if (modela.def->gen == modelb.def->gen) { 756 if (modela.def->type == modelb.def->type) { 757 cpu_type = modela.def->type; 758 } else { 759 cpu_type = 0; 760 } 761 max_gen = modela.def->gen; 762 max_gen_ga = MIN(modela.def->ec_ga, modelb.def->ec_ga); 763 } else if (modela.def->gen > modelb.def->gen) { 764 cpu_type = modelb.def->type; 765 max_gen = modelb.def->gen; 766 max_gen_ga = modelb.def->ec_ga; 767 } else { 768 cpu_type = modela.def->type; 769 max_gen = modela.def->gen; 770 max_gen_ga = modela.def->ec_ga; 771 } 772 773 model.def = s390_find_cpu_def(cpu_type, max_gen, max_gen_ga, 774 model.features); 775 776 /* models without early base features (esan3) are bad */ 777 if (!model.def) { 778 error_setg(errp, "No compatible CPU model could be created as" 779 " important base features are disabled"); 780 return NULL; 781 } 782 783 /* strip off features not part of the max model */ 784 bitmap_and(model.features, model.features, model.def->full_feat, 785 S390_FEAT_MAX); 786 787 baseline_info = g_new0(CpuModelBaselineInfo, 1); 788 baseline_info->model = g_malloc0(sizeof(*baseline_info->model)); 789 cpu_info_from_model(baseline_info->model, &model, true); 790 return baseline_info; 791 } 792 #endif 793 794 static void check_consistency(const S390CPUModel *model) 795 { 796 static int dep[][2] = { 797 { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH }, 798 { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH }, 799 { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH }, 800 { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT }, 801 { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH}, 802 { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT }, 803 { S390_FEAT_DFP_FAST, S390_FEAT_DFP }, 804 { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 }, 805 { S390_FEAT_EDAT_2, S390_FEAT_EDAT}, 806 { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 }, 807 { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 }, 808 { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 }, 809 { S390_FEAT_SIE_CMMA, S390_FEAT_CMM }, 810 { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS }, 811 { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT }, 812 { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 }, 813 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_3 }, 814 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_4 }, 815 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 816 { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR }, 817 { S390_FEAT_VECTOR_PACKED_DECIMAL_ENH, S390_FEAT_VECTOR_PACKED_DECIMAL }, 818 { S390_FEAT_VECTOR_PACKED_DECIMAL_ENH2, S390_FEAT_VECTOR_PACKED_DECIMAL_ENH }, 819 { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR }, 820 { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 821 { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP }, 822 { S390_FEAT_CMM_NT, S390_FEAT_CMM }, 823 { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 824 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST }, 825 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 826 { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 }, 827 { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA }, 828 { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA }, 829 { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA }, 830 { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA }, 831 { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA }, 832 { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA }, 833 { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA }, 834 { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA }, 835 { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA }, 836 { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA }, 837 { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA }, 838 { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA }, 839 { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 }, 840 { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 }, 841 { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 }, 842 { S390_FEAT_AP_QUERY_CONFIG_INFO, S390_FEAT_AP }, 843 { S390_FEAT_AP_FACILITIES_TEST, S390_FEAT_AP }, 844 { S390_FEAT_PTFF_QSIE, S390_FEAT_MULTIPLE_EPOCH }, 845 { S390_FEAT_PTFF_QTOUE, S390_FEAT_MULTIPLE_EPOCH }, 846 { S390_FEAT_PTFF_STOE, S390_FEAT_MULTIPLE_EPOCH }, 847 { S390_FEAT_PTFF_STOUE, S390_FEAT_MULTIPLE_EPOCH }, 848 { S390_FEAT_AP_QUEUE_INTERRUPT_CONTROL, S390_FEAT_AP }, 849 { S390_FEAT_DIAG_318, S390_FEAT_EXTENDED_LENGTH_SCCB }, 850 { S390_FEAT_NNPA, S390_FEAT_VECTOR }, 851 { S390_FEAT_RDP, S390_FEAT_LOCAL_TLB_CLEARING }, 852 }; 853 int i; 854 855 for (i = 0; i < ARRAY_SIZE(dep); i++) { 856 if (test_bit(dep[i][0], model->features) && 857 !test_bit(dep[i][1], model->features)) { 858 warn_report("\'%s\' requires \'%s\'.", 859 s390_feat_def(dep[i][0])->name, 860 s390_feat_def(dep[i][1])->name); 861 } 862 } 863 } 864 865 static void error_prepend_missing_feat(const char *name, void *opaque) 866 { 867 error_prepend((Error **) opaque, "%s ", name); 868 } 869 870 static void check_compatibility(const S390CPUModel *max_model, 871 const S390CPUModel *model, Error **errp) 872 { 873 S390FeatBitmap missing; 874 875 if (model->def->gen > max_model->def->gen) { 876 error_setg(errp, "Selected CPU generation is too new. Maximum " 877 "supported model in the configuration: \'%s\'", 878 max_model->def->name); 879 return; 880 } else if (model->def->gen == max_model->def->gen && 881 model->def->ec_ga > max_model->def->ec_ga) { 882 error_setg(errp, "Selected CPU GA level is too new. Maximum " 883 "supported model in the configuration: \'%s\'", 884 max_model->def->name); 885 return; 886 } 887 888 #ifndef CONFIG_USER_ONLY 889 if (only_migratable && test_bit(S390_FEAT_UNPACK, model->features)) { 890 error_setg(errp, "The unpack facility is not compatible with " 891 "the --only-migratable option. You must remove either " 892 "the 'unpack' facility or the --only-migratable option"); 893 return; 894 } 895 #endif 896 897 /* detect the missing features to properly report them */ 898 bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX); 899 if (bitmap_empty(missing, S390_FEAT_MAX)) { 900 return; 901 } 902 903 error_setg(errp, " "); 904 s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat); 905 error_prepend(errp, "Some features requested in the CPU model are not " 906 "available in the configuration: "); 907 } 908 909 static S390CPUModel *get_max_cpu_model(Error **errp) 910 { 911 Error *err = NULL; 912 static S390CPUModel max_model; 913 static bool cached; 914 915 if (cached) { 916 return &max_model; 917 } 918 919 if (kvm_enabled()) { 920 kvm_s390_get_host_cpu_model(&max_model, &err); 921 } else { 922 max_model.def = s390_find_cpu_def(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 923 QEMU_MAX_CPU_EC_GA, NULL); 924 bitmap_copy(max_model.features, qemu_max_cpu_feat, S390_FEAT_MAX); 925 } 926 if (err) { 927 error_propagate(errp, err); 928 return NULL; 929 } 930 cached = true; 931 return &max_model; 932 } 933 934 static inline void apply_cpu_model(const S390CPUModel *model, Error **errp) 935 { 936 #ifndef CONFIG_USER_ONLY 937 Error *err = NULL; 938 static S390CPUModel applied_model; 939 static bool applied; 940 941 /* 942 * We have the same model for all VCPUs. KVM can only be configured before 943 * any VCPUs are defined in KVM. 944 */ 945 if (applied) { 946 if (model && memcmp(&applied_model, model, sizeof(S390CPUModel))) { 947 error_setg(errp, "Mixed CPU models are not supported on s390x."); 948 } 949 return; 950 } 951 952 if (kvm_enabled()) { 953 kvm_s390_apply_cpu_model(model, &err); 954 if (err) { 955 error_propagate(errp, err); 956 return; 957 } 958 } 959 960 applied = true; 961 if (model) { 962 applied_model = *model; 963 } 964 #endif 965 } 966 967 void s390_realize_cpu_model(CPUState *cs, Error **errp) 968 { 969 Error *err = NULL; 970 S390CPUClass *xcc = S390_CPU_GET_CLASS(cs); 971 S390CPU *cpu = S390_CPU(cs); 972 const S390CPUModel *max_model; 973 974 if (xcc->kvm_required && !kvm_enabled()) { 975 error_setg(errp, "CPU definition requires KVM"); 976 return; 977 } 978 979 if (!cpu->model) { 980 /* no host model support -> perform compatibility stuff */ 981 apply_cpu_model(NULL, errp); 982 return; 983 } 984 985 max_model = get_max_cpu_model(errp); 986 if (!max_model) { 987 error_prepend(errp, "CPU models are not available: "); 988 return; 989 } 990 991 /* copy over properties that can vary */ 992 cpu->model->lowest_ibc = max_model->lowest_ibc; 993 cpu->model->cpu_id = max_model->cpu_id; 994 cpu->model->cpu_id_format = max_model->cpu_id_format; 995 cpu->model->cpu_ver = max_model->cpu_ver; 996 997 check_consistency(cpu->model); 998 check_compatibility(max_model, cpu->model, &err); 999 if (err) { 1000 error_propagate(errp, err); 1001 return; 1002 } 1003 1004 apply_cpu_model(cpu->model, errp); 1005 1006 #if !defined(CONFIG_USER_ONLY) 1007 cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model); 1008 if (tcg_enabled()) { 1009 /* basic mode, write the cpu address into the first 4 bit of the ID */ 1010 cpu->env.cpuid = deposit64(cpu->env.cpuid, 54, 4, cpu->env.core_id); 1011 } 1012 #endif 1013 } 1014 1015 static void get_feature(Object *obj, Visitor *v, const char *name, 1016 void *opaque, Error **errp) 1017 { 1018 S390Feat feat = (S390Feat) (uintptr_t) opaque; 1019 S390CPU *cpu = S390_CPU(obj); 1020 bool value; 1021 1022 if (!cpu->model) { 1023 error_setg(errp, "Details about the host CPU model are not available, " 1024 "features cannot be queried."); 1025 return; 1026 } 1027 1028 value = test_bit(feat, cpu->model->features); 1029 visit_type_bool(v, name, &value, errp); 1030 } 1031 1032 static void set_feature(Object *obj, Visitor *v, const char *name, 1033 void *opaque, Error **errp) 1034 { 1035 S390Feat feat = (S390Feat) (uintptr_t) opaque; 1036 DeviceState *dev = DEVICE(obj); 1037 S390CPU *cpu = S390_CPU(obj); 1038 bool value; 1039 1040 if (dev->realized) { 1041 error_setg(errp, "Attempt to set property '%s' on '%s' after " 1042 "it was realized", name, object_get_typename(obj)); 1043 return; 1044 } else if (!cpu->model) { 1045 error_setg(errp, "Details about the host CPU model are not available, " 1046 "features cannot be changed."); 1047 return; 1048 } 1049 1050 if (!visit_type_bool(v, name, &value, errp)) { 1051 return; 1052 } 1053 if (value) { 1054 if (!test_bit(feat, cpu->model->def->full_feat)) { 1055 error_setg(errp, "Feature '%s' is not available for CPU model '%s'," 1056 " it was introduced with later models.", 1057 name, cpu->model->def->name); 1058 return; 1059 } 1060 set_bit(feat, cpu->model->features); 1061 } else { 1062 clear_bit(feat, cpu->model->features); 1063 } 1064 } 1065 1066 static void get_feature_group(Object *obj, Visitor *v, const char *name, 1067 void *opaque, Error **errp) 1068 { 1069 S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque; 1070 const S390FeatGroupDef *def = s390_feat_group_def(group); 1071 S390CPU *cpu = S390_CPU(obj); 1072 S390FeatBitmap tmp; 1073 bool value; 1074 1075 if (!cpu->model) { 1076 error_setg(errp, "Details about the host CPU model are not available, " 1077 "features cannot be queried."); 1078 return; 1079 } 1080 1081 /* a group is enabled if all features are enabled */ 1082 bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX); 1083 value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX); 1084 visit_type_bool(v, name, &value, errp); 1085 } 1086 1087 static void set_feature_group(Object *obj, Visitor *v, const char *name, 1088 void *opaque, Error **errp) 1089 { 1090 S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque; 1091 const S390FeatGroupDef *def = s390_feat_group_def(group); 1092 DeviceState *dev = DEVICE(obj); 1093 S390CPU *cpu = S390_CPU(obj); 1094 bool value; 1095 1096 if (dev->realized) { 1097 error_setg(errp, "Attempt to set property '%s' on '%s' after " 1098 "it was realized", name, object_get_typename(obj)); 1099 return; 1100 } else if (!cpu->model) { 1101 error_setg(errp, "Details about the host CPU model are not available, " 1102 "features cannot be changed."); 1103 return; 1104 } 1105 1106 if (!visit_type_bool(v, name, &value, errp)) { 1107 return; 1108 } 1109 if (value) { 1110 /* groups are added in one shot, so an intersect is sufficient */ 1111 if (!bitmap_intersects(def->feat, cpu->model->def->full_feat, 1112 S390_FEAT_MAX)) { 1113 error_setg(errp, "Group '%s' is not available for CPU model '%s'," 1114 " it was introduced with later models.", 1115 name, cpu->model->def->name); 1116 return; 1117 } 1118 bitmap_or(cpu->model->features, cpu->model->features, def->feat, 1119 S390_FEAT_MAX); 1120 } else { 1121 bitmap_andnot(cpu->model->features, cpu->model->features, def->feat, 1122 S390_FEAT_MAX); 1123 } 1124 } 1125 1126 static void s390_cpu_model_initfn(Object *obj) 1127 { 1128 S390CPU *cpu = S390_CPU(obj); 1129 S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu); 1130 1131 cpu->model = g_malloc0(sizeof(*cpu->model)); 1132 /* copy the model, so we can modify it */ 1133 cpu->model->def = xcc->cpu_def; 1134 if (xcc->is_static) { 1135 /* base model - features will never change */ 1136 bitmap_copy(cpu->model->features, cpu->model->def->base_feat, 1137 S390_FEAT_MAX); 1138 } else { 1139 /* latest model - features can change */ 1140 bitmap_copy(cpu->model->features, 1141 cpu->model->def->default_feat, S390_FEAT_MAX); 1142 } 1143 } 1144 1145 static S390CPUDef s390_qemu_cpu_def; 1146 static S390CPUModel s390_qemu_cpu_model; 1147 1148 /* Set the qemu CPU model (on machine initialization). Must not be called 1149 * once CPUs have been created. 1150 */ 1151 void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga, 1152 const S390FeatInit feat_init) 1153 { 1154 const S390CPUDef *def = s390_find_cpu_def(type, gen, ec_ga, NULL); 1155 1156 g_assert(def); 1157 g_assert(QTAILQ_EMPTY_RCU(&cpus)); 1158 1159 /* TCG emulates some features that can usually not be enabled with 1160 * the emulated machine generation. Make sure they can be enabled 1161 * when using the QEMU model by adding them to full_feat. We have 1162 * to copy the definition to do that. 1163 */ 1164 memcpy(&s390_qemu_cpu_def, def, sizeof(s390_qemu_cpu_def)); 1165 bitmap_or(s390_qemu_cpu_def.full_feat, s390_qemu_cpu_def.full_feat, 1166 qemu_max_cpu_feat, S390_FEAT_MAX); 1167 1168 /* build the CPU model */ 1169 s390_qemu_cpu_model.def = &s390_qemu_cpu_def; 1170 bitmap_zero(s390_qemu_cpu_model.features, S390_FEAT_MAX); 1171 s390_init_feat_bitmap(feat_init, s390_qemu_cpu_model.features); 1172 } 1173 1174 static void s390_qemu_cpu_model_initfn(Object *obj) 1175 { 1176 S390CPU *cpu = S390_CPU(obj); 1177 1178 cpu->model = g_malloc0(sizeof(*cpu->model)); 1179 /* copy the CPU model so we can modify it */ 1180 memcpy(cpu->model, &s390_qemu_cpu_model, sizeof(*cpu->model)); 1181 } 1182 1183 static void s390_max_cpu_model_initfn(Object *obj) 1184 { 1185 const S390CPUModel *max_model; 1186 S390CPU *cpu = S390_CPU(obj); 1187 Error *local_err = NULL; 1188 1189 if (kvm_enabled() && !kvm_s390_cpu_models_supported()) { 1190 /* "max" and "host" always work, even without CPU model support */ 1191 return; 1192 } 1193 1194 max_model = get_max_cpu_model(&local_err); 1195 if (local_err) { 1196 /* we expect errors only under KVM, when actually querying the kernel */ 1197 g_assert(kvm_enabled()); 1198 error_report_err(local_err); 1199 /* fallback to unsupported CPU models */ 1200 return; 1201 } 1202 1203 cpu->model = g_new(S390CPUModel, 1); 1204 /* copy the CPU model so we can modify it */ 1205 memcpy(cpu->model, max_model, sizeof(*cpu->model)); 1206 } 1207 1208 static void s390_cpu_model_finalize(Object *obj) 1209 { 1210 S390CPU *cpu = S390_CPU(obj); 1211 1212 g_free(cpu->model); 1213 cpu->model = NULL; 1214 } 1215 1216 static bool get_is_migration_safe(Object *obj, Error **errp) 1217 { 1218 return S390_CPU_GET_CLASS(obj)->is_migration_safe; 1219 } 1220 1221 static bool get_is_static(Object *obj, Error **errp) 1222 { 1223 return S390_CPU_GET_CLASS(obj)->is_static; 1224 } 1225 1226 static char *get_description(Object *obj, Error **errp) 1227 { 1228 return g_strdup(S390_CPU_GET_CLASS(obj)->desc); 1229 } 1230 1231 void s390_cpu_model_class_register_props(ObjectClass *oc) 1232 { 1233 S390FeatGroup group; 1234 S390Feat feat; 1235 1236 object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe, 1237 NULL); 1238 object_class_property_add_bool(oc, "static", get_is_static, 1239 NULL); 1240 object_class_property_add_str(oc, "description", get_description, NULL); 1241 1242 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 1243 const S390FeatDef *def = s390_feat_def(feat); 1244 object_class_property_add(oc, def->name, "bool", get_feature, 1245 set_feature, NULL, (void *) feat); 1246 object_class_property_set_description(oc, def->name, def->desc); 1247 } 1248 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 1249 const S390FeatGroupDef *def = s390_feat_group_def(group); 1250 object_class_property_add(oc, def->name, "bool", get_feature_group, 1251 set_feature_group, NULL, (void *) group); 1252 object_class_property_set_description(oc, def->name, def->desc); 1253 } 1254 } 1255 1256 #ifdef CONFIG_KVM 1257 static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data) 1258 { 1259 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1260 1261 xcc->kvm_required = true; 1262 xcc->desc = "KVM only: All recognized features"; 1263 } 1264 #endif 1265 1266 static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data) 1267 { 1268 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1269 1270 /* all base models are migration safe */ 1271 xcc->cpu_def = (const S390CPUDef *) data; 1272 xcc->is_migration_safe = true; 1273 xcc->is_static = true; 1274 xcc->desc = xcc->cpu_def->desc; 1275 } 1276 1277 static void s390_cpu_model_class_init(ObjectClass *oc, void *data) 1278 { 1279 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1280 1281 /* model that can change between QEMU versions */ 1282 xcc->cpu_def = (const S390CPUDef *) data; 1283 xcc->is_migration_safe = true; 1284 xcc->desc = xcc->cpu_def->desc; 1285 } 1286 1287 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data) 1288 { 1289 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1290 1291 xcc->is_migration_safe = true; 1292 xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s", 1293 qemu_hw_version()); 1294 } 1295 1296 static void s390_max_cpu_model_class_init(ObjectClass *oc, void *data) 1297 { 1298 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1299 1300 /* 1301 * The "max" model is neither static nor migration safe. Under KVM 1302 * it represents the "host" model. Under TCG it represents some kind of 1303 * "qemu" CPU model without compat handling and maybe with some additional 1304 * CPU features that are not yet unlocked in the "qemu" model. 1305 */ 1306 xcc->desc = 1307 "Enables all features supported by the accelerator in the current host"; 1308 } 1309 1310 /* Generate type name for a cpu model. Caller has to free the string. */ 1311 static char *s390_cpu_type_name(const char *model_name) 1312 { 1313 return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name); 1314 } 1315 1316 /* Generate type name for a base cpu model. Caller has to free the string. */ 1317 static char *s390_base_cpu_type_name(const char *model_name) 1318 { 1319 return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name); 1320 } 1321 1322 ObjectClass *s390_cpu_class_by_name(const char *name) 1323 { 1324 char *typename = s390_cpu_type_name(name); 1325 ObjectClass *oc; 1326 1327 oc = object_class_by_name(typename); 1328 g_free(typename); 1329 return oc; 1330 } 1331 1332 static const TypeInfo qemu_s390_cpu_type_info = { 1333 .name = S390_CPU_TYPE_NAME("qemu"), 1334 .parent = TYPE_S390_CPU, 1335 .instance_init = s390_qemu_cpu_model_initfn, 1336 .instance_finalize = s390_cpu_model_finalize, 1337 .class_init = s390_qemu_cpu_model_class_init, 1338 }; 1339 1340 static const TypeInfo max_s390_cpu_type_info = { 1341 .name = S390_CPU_TYPE_NAME("max"), 1342 .parent = TYPE_S390_CPU, 1343 .instance_init = s390_max_cpu_model_initfn, 1344 .instance_finalize = s390_cpu_model_finalize, 1345 .class_init = s390_max_cpu_model_class_init, 1346 }; 1347 1348 #ifdef CONFIG_KVM 1349 static const TypeInfo host_s390_cpu_type_info = { 1350 .name = S390_CPU_TYPE_NAME("host"), 1351 .parent = S390_CPU_TYPE_NAME("max"), 1352 .class_init = s390_host_cpu_model_class_init, 1353 }; 1354 #endif 1355 1356 static void init_ignored_base_feat(void) 1357 { 1358 static const int feats[] = { 1359 /* MSA subfunctions that could not be available on certain machines */ 1360 S390_FEAT_KMAC_DEA, 1361 S390_FEAT_KMAC_TDEA_128, 1362 S390_FEAT_KMAC_TDEA_192, 1363 S390_FEAT_KMC_DEA, 1364 S390_FEAT_KMC_TDEA_128, 1365 S390_FEAT_KMC_TDEA_192, 1366 S390_FEAT_KM_DEA, 1367 S390_FEAT_KM_TDEA_128, 1368 S390_FEAT_KM_TDEA_192, 1369 S390_FEAT_KIMD_SHA_1, 1370 S390_FEAT_KLMD_SHA_1, 1371 /* CSSKE is deprecated on newer generations */ 1372 S390_FEAT_CONDITIONAL_SSKE, 1373 }; 1374 int i; 1375 1376 for (i = 0; i < ARRAY_SIZE(feats); i++) { 1377 set_bit(feats[i], ignored_base_feat); 1378 } 1379 } 1380 1381 static void register_types(void) 1382 { 1383 static const S390FeatInit qemu_latest_init = { S390_FEAT_LIST_QEMU_LATEST }; 1384 int i; 1385 1386 init_ignored_base_feat(); 1387 1388 /* init all bitmaps from gnerated data initially */ 1389 s390_init_feat_bitmap(qemu_max_cpu_feat_init, qemu_max_cpu_feat); 1390 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 1391 s390_init_feat_bitmap(s390_cpu_defs[i].base_init, 1392 s390_cpu_defs[i].base_feat); 1393 s390_init_feat_bitmap(s390_cpu_defs[i].default_init, 1394 s390_cpu_defs[i].default_feat); 1395 s390_init_feat_bitmap(s390_cpu_defs[i].full_init, 1396 s390_cpu_defs[i].full_feat); 1397 } 1398 1399 /* initialize the qemu model with latest definition */ 1400 s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 1401 QEMU_MAX_CPU_EC_GA, qemu_latest_init); 1402 1403 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 1404 char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name); 1405 TypeInfo ti_base = { 1406 .name = base_name, 1407 .parent = TYPE_S390_CPU, 1408 .instance_init = s390_cpu_model_initfn, 1409 .instance_finalize = s390_cpu_model_finalize, 1410 .class_init = s390_base_cpu_model_class_init, 1411 .class_data = (void *) &s390_cpu_defs[i], 1412 }; 1413 char *name = s390_cpu_type_name(s390_cpu_defs[i].name); 1414 TypeInfo ti = { 1415 .name = name, 1416 .parent = TYPE_S390_CPU, 1417 .instance_init = s390_cpu_model_initfn, 1418 .instance_finalize = s390_cpu_model_finalize, 1419 .class_init = s390_cpu_model_class_init, 1420 .class_data = (void *) &s390_cpu_defs[i], 1421 }; 1422 1423 type_register_static(&ti_base); 1424 type_register_static(&ti); 1425 g_free(base_name); 1426 g_free(name); 1427 } 1428 1429 type_register_static(&qemu_s390_cpu_type_info); 1430 type_register_static(&max_s390_cpu_type_info); 1431 #ifdef CONFIG_KVM 1432 type_register_static(&host_s390_cpu_type_info); 1433 #endif 1434 } 1435 1436 type_init(register_types) 1437