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 GA1"), 90 CPUDEF_INIT(0x8562, 15, 1, 47, 0x08000000U, "gen15b", "IBM 8562 GA1"), 91 }; 92 93 #define QEMU_MAX_CPU_TYPE 0x2964 94 #define QEMU_MAX_CPU_GEN 13 95 #define QEMU_MAX_CPU_EC_GA 2 96 static const S390FeatInit qemu_max_cpu_feat_init = { S390_FEAT_LIST_QEMU_MAX }; 97 static S390FeatBitmap qemu_max_cpu_feat; 98 99 /* features part of a base model but not relevant for finding a base model */ 100 S390FeatBitmap ignored_base_feat; 101 102 void s390_cpudef_featoff(uint8_t gen, uint8_t ec_ga, S390Feat feat) 103 { 104 const S390CPUDef *def; 105 106 def = s390_find_cpu_def(0, gen, ec_ga, NULL); 107 clear_bit(feat, (unsigned long *)&def->default_feat); 108 } 109 110 void s390_cpudef_featoff_greater(uint8_t gen, uint8_t ec_ga, S390Feat feat) 111 { 112 int i; 113 114 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 115 const S390CPUDef *def = &s390_cpu_defs[i]; 116 117 if (def->gen < gen) { 118 continue; 119 } 120 if (def->gen == gen && def->ec_ga < ec_ga) { 121 continue; 122 } 123 124 clear_bit(feat, (unsigned long *)&def->default_feat); 125 } 126 } 127 128 void s390_cpudef_group_featoff_greater(uint8_t gen, uint8_t ec_ga, 129 S390FeatGroup group) 130 { 131 const S390FeatGroupDef *group_def = s390_feat_group_def(group); 132 S390FeatBitmap group_def_off; 133 int i; 134 135 bitmap_complement(group_def_off, group_def->feat, S390_FEAT_MAX); 136 137 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 138 const S390CPUDef *cpu_def = &s390_cpu_defs[i]; 139 140 if (cpu_def->gen < gen) { 141 continue; 142 } 143 if (cpu_def->gen == gen && cpu_def->ec_ga < ec_ga) { 144 continue; 145 } 146 147 bitmap_and((unsigned long *)&cpu_def->default_feat, 148 cpu_def->default_feat, group_def_off, S390_FEAT_MAX); 149 } 150 } 151 152 uint32_t s390_get_hmfai(void) 153 { 154 static S390CPU *cpu; 155 156 if (!cpu) { 157 cpu = S390_CPU(qemu_get_cpu(0)); 158 } 159 160 if (!cpu || !cpu->model) { 161 return 0; 162 } 163 return cpu->model->def->hmfai; 164 } 165 166 uint8_t s390_get_mha_pow(void) 167 { 168 static S390CPU *cpu; 169 170 if (!cpu) { 171 cpu = S390_CPU(qemu_get_cpu(0)); 172 } 173 174 if (!cpu || !cpu->model) { 175 return 0; 176 } 177 return cpu->model->def->mha_pow; 178 } 179 180 uint32_t s390_get_ibc_val(void) 181 { 182 uint16_t unblocked_ibc, lowest_ibc; 183 static S390CPU *cpu; 184 185 if (!cpu) { 186 cpu = S390_CPU(qemu_get_cpu(0)); 187 } 188 189 if (!cpu || !cpu->model) { 190 return 0; 191 } 192 unblocked_ibc = s390_ibc_from_cpu_model(cpu->model); 193 lowest_ibc = cpu->model->lowest_ibc; 194 /* the lowest_ibc always has to be <= unblocked_ibc */ 195 if (!lowest_ibc || lowest_ibc > unblocked_ibc) { 196 return 0; 197 } 198 return ((uint32_t) lowest_ibc << 16) | unblocked_ibc; 199 } 200 201 void s390_get_feat_block(S390FeatType type, uint8_t *data) 202 { 203 static S390CPU *cpu; 204 205 if (!cpu) { 206 cpu = S390_CPU(qemu_get_cpu(0)); 207 } 208 209 if (!cpu || !cpu->model) { 210 return; 211 } 212 s390_fill_feat_block(cpu->model->features, type, data); 213 } 214 215 bool s390_has_feat(S390Feat feat) 216 { 217 static S390CPU *cpu; 218 219 if (!cpu) { 220 cpu = S390_CPU(qemu_get_cpu(0)); 221 } 222 223 if (!cpu || !cpu->model) { 224 #ifdef CONFIG_KVM 225 if (kvm_enabled()) { 226 if (feat == S390_FEAT_VECTOR) { 227 return kvm_check_extension(kvm_state, 228 KVM_CAP_S390_VECTOR_REGISTERS); 229 } 230 if (feat == S390_FEAT_RUNTIME_INSTRUMENTATION) { 231 return kvm_s390_get_ri(); 232 } 233 if (feat == S390_FEAT_MSA_EXT_3) { 234 return true; 235 } 236 } 237 #endif 238 if (feat == S390_FEAT_ZPCI) { 239 return true; 240 } 241 return 0; 242 } 243 244 if (s390_is_pv()) { 245 switch (feat) { 246 case S390_FEAT_DIAG_318: 247 case S390_FEAT_HPMA2: 248 case S390_FEAT_SIE_F2: 249 case S390_FEAT_SIE_SKEY: 250 case S390_FEAT_SIE_GPERE: 251 case S390_FEAT_SIE_SIIF: 252 case S390_FEAT_SIE_SIGPIF: 253 case S390_FEAT_SIE_IB: 254 case S390_FEAT_SIE_CEI: 255 case S390_FEAT_SIE_KSS: 256 case S390_FEAT_SIE_GSLS: 257 case S390_FEAT_SIE_64BSCAO: 258 case S390_FEAT_SIE_CMMA: 259 case S390_FEAT_SIE_PFMFI: 260 case S390_FEAT_SIE_IBS: 261 return false; 262 break; 263 default: 264 break; 265 } 266 } 267 return test_bit(feat, cpu->model->features); 268 } 269 270 uint8_t s390_get_gen_for_cpu_type(uint16_t type) 271 { 272 int i; 273 274 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 275 if (s390_cpu_defs[i].type == type) { 276 return s390_cpu_defs[i].gen; 277 } 278 } 279 return 0; 280 } 281 282 const S390CPUDef *s390_find_cpu_def(uint16_t type, uint8_t gen, uint8_t ec_ga, 283 S390FeatBitmap features) 284 { 285 const S390CPUDef *last_compatible = NULL; 286 const S390CPUDef *matching_cpu_type = NULL; 287 int i; 288 289 if (!gen) { 290 ec_ga = 0; 291 } 292 if (!gen && type) { 293 gen = s390_get_gen_for_cpu_type(type); 294 } 295 296 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 297 const S390CPUDef *def = &s390_cpu_defs[i]; 298 S390FeatBitmap missing; 299 300 /* don't even try newer generations if we know the generation */ 301 if (gen) { 302 if (def->gen > gen) { 303 break; 304 } else if (def->gen == gen && ec_ga && def->ec_ga > ec_ga) { 305 break; 306 } 307 } 308 309 if (features) { 310 /* see if the model satisfies the minimum features */ 311 bitmap_andnot(missing, def->base_feat, features, S390_FEAT_MAX); 312 /* 313 * Ignore certain features that are in the base model, but not 314 * relevant for the search (esp. MSA subfunctions). 315 */ 316 bitmap_andnot(missing, missing, ignored_base_feat, S390_FEAT_MAX); 317 if (!bitmap_empty(missing, S390_FEAT_MAX)) { 318 break; 319 } 320 } 321 322 /* stop the search if we found the exact model */ 323 if (def->type == type && def->ec_ga == ec_ga) { 324 return def; 325 } 326 /* remember if we've at least seen one with the same cpu type */ 327 if (def->type == type) { 328 matching_cpu_type = def; 329 } 330 last_compatible = def; 331 } 332 /* prefer the model with the same cpu type, esp. don't take the BC for EC */ 333 if (matching_cpu_type) { 334 return matching_cpu_type; 335 } 336 return last_compatible; 337 } 338 339 static void s390_print_cpu_model_list_entry(gpointer data, gpointer user_data) 340 { 341 const S390CPUClass *scc = S390_CPU_CLASS((ObjectClass *)data); 342 char *name = g_strdup(object_class_get_name((ObjectClass *)data)); 343 const char *details = ""; 344 345 if (scc->is_static) { 346 details = "(static, migration-safe)"; 347 } else if (scc->is_migration_safe) { 348 details = "(migration-safe)"; 349 } 350 351 /* strip off the -s390x-cpu */ 352 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; 353 qemu_printf("s390 %-15s %-35s %s\n", name, scc->desc, details); 354 g_free(name); 355 } 356 357 static gint s390_cpu_list_compare(gconstpointer a, gconstpointer b) 358 { 359 const S390CPUClass *cc_a = S390_CPU_CLASS((ObjectClass *)a); 360 const S390CPUClass *cc_b = S390_CPU_CLASS((ObjectClass *)b); 361 const char *name_a = object_class_get_name((ObjectClass *)a); 362 const char *name_b = object_class_get_name((ObjectClass *)b); 363 364 /* 365 * Move qemu, host and max to the top of the list, qemu first, host second, 366 * max third. 367 */ 368 if (name_a[0] == 'q') { 369 return -1; 370 } else if (name_b[0] == 'q') { 371 return 1; 372 } else if (name_a[0] == 'h') { 373 return -1; 374 } else if (name_b[0] == 'h') { 375 return 1; 376 } else if (name_a[0] == 'm') { 377 return -1; 378 } else if (name_b[0] == 'm') { 379 return 1; 380 } 381 382 /* keep the same order we have in our table (sorted by release date) */ 383 if (cc_a->cpu_def != cc_b->cpu_def) { 384 return cc_a->cpu_def - cc_b->cpu_def; 385 } 386 387 /* exact same definition - list base model first */ 388 return cc_a->is_static ? -1 : 1; 389 } 390 391 void s390_cpu_list(void) 392 { 393 S390FeatGroup group; 394 S390Feat feat; 395 GSList *list; 396 397 list = object_class_get_list(TYPE_S390_CPU, false); 398 list = g_slist_sort(list, s390_cpu_list_compare); 399 g_slist_foreach(list, s390_print_cpu_model_list_entry, NULL); 400 g_slist_free(list); 401 402 qemu_printf("\nRecognized feature flags:\n"); 403 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 404 const S390FeatDef *def = s390_feat_def(feat); 405 406 qemu_printf("%-20s %-50s\n", def->name, def->desc); 407 } 408 409 qemu_printf("\nRecognized feature groups:\n"); 410 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 411 const S390FeatGroupDef *def = s390_feat_group_def(group); 412 413 qemu_printf("%-20s %-50s\n", def->name, def->desc); 414 } 415 } 416 417 static S390CPUModel *get_max_cpu_model(Error **errp); 418 419 #ifndef CONFIG_USER_ONLY 420 static void list_add_feat(const char *name, void *opaque); 421 422 static void check_unavailable_features(const S390CPUModel *max_model, 423 const S390CPUModel *model, 424 strList **unavailable) 425 { 426 S390FeatBitmap missing; 427 428 /* check general model compatibility */ 429 if (max_model->def->gen < model->def->gen || 430 (max_model->def->gen == model->def->gen && 431 max_model->def->ec_ga < model->def->ec_ga)) { 432 list_add_feat("type", unavailable); 433 } 434 435 /* detect missing features if any to properly report them */ 436 bitmap_andnot(missing, model->features, max_model->features, 437 S390_FEAT_MAX); 438 if (!bitmap_empty(missing, S390_FEAT_MAX)) { 439 s390_feat_bitmap_to_ascii(missing, unavailable, list_add_feat); 440 } 441 } 442 443 struct CpuDefinitionInfoListData { 444 CpuDefinitionInfoList *list; 445 S390CPUModel *model; 446 }; 447 448 static void create_cpu_model_list(ObjectClass *klass, void *opaque) 449 { 450 struct CpuDefinitionInfoListData *cpu_list_data = opaque; 451 CpuDefinitionInfoList **cpu_list = &cpu_list_data->list; 452 CpuDefinitionInfo *info; 453 char *name = g_strdup(object_class_get_name(klass)); 454 S390CPUClass *scc = S390_CPU_CLASS(klass); 455 456 /* strip off the -s390x-cpu */ 457 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; 458 info = g_new0(CpuDefinitionInfo, 1); 459 info->name = name; 460 info->has_migration_safe = true; 461 info->migration_safe = scc->is_migration_safe; 462 info->q_static = scc->is_static; 463 info->q_typename = g_strdup(object_class_get_name(klass)); 464 /* check for unavailable features */ 465 if (cpu_list_data->model) { 466 Object *obj; 467 S390CPU *sc; 468 obj = object_new_with_class(klass); 469 sc = S390_CPU(obj); 470 if (sc->model) { 471 info->has_unavailable_features = true; 472 check_unavailable_features(cpu_list_data->model, sc->model, 473 &info->unavailable_features); 474 } 475 object_unref(obj); 476 } 477 478 QAPI_LIST_PREPEND(*cpu_list, info); 479 } 480 481 CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp) 482 { 483 struct CpuDefinitionInfoListData list_data = { 484 .list = NULL, 485 }; 486 487 list_data.model = get_max_cpu_model(NULL); 488 489 object_class_foreach(create_cpu_model_list, TYPE_S390_CPU, false, 490 &list_data); 491 492 return list_data.list; 493 } 494 495 static void cpu_model_from_info(S390CPUModel *model, const CpuModelInfo *info, 496 Error **errp) 497 { 498 Error *err = NULL; 499 const QDict *qdict = NULL; 500 const QDictEntry *e; 501 Visitor *visitor; 502 ObjectClass *oc; 503 S390CPU *cpu; 504 Object *obj; 505 506 if (info->props) { 507 qdict = qobject_to(QDict, info->props); 508 if (!qdict) { 509 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict"); 510 return; 511 } 512 } 513 514 oc = cpu_class_by_name(TYPE_S390_CPU, info->name); 515 if (!oc) { 516 error_setg(errp, "The CPU definition \'%s\' is unknown.", info->name); 517 return; 518 } 519 if (S390_CPU_CLASS(oc)->kvm_required && !kvm_enabled()) { 520 error_setg(errp, "The CPU definition '%s' requires KVM", info->name); 521 return; 522 } 523 obj = object_new_with_class(oc); 524 cpu = S390_CPU(obj); 525 526 if (!cpu->model) { 527 error_setg(errp, "Details about the host CPU model are not available, " 528 "it cannot be used."); 529 object_unref(obj); 530 return; 531 } 532 533 if (qdict) { 534 visitor = qobject_input_visitor_new(info->props); 535 if (!visit_start_struct(visitor, NULL, NULL, 0, errp)) { 536 visit_free(visitor); 537 object_unref(obj); 538 return; 539 } 540 for (e = qdict_first(qdict); e; e = qdict_next(qdict, e)) { 541 if (!object_property_set(obj, e->key, visitor, &err)) { 542 break; 543 } 544 } 545 if (!err) { 546 visit_check_struct(visitor, &err); 547 } 548 visit_end_struct(visitor, NULL); 549 visit_free(visitor); 550 if (err) { 551 error_propagate(errp, err); 552 object_unref(obj); 553 return; 554 } 555 } 556 557 /* copy the model and throw the cpu away */ 558 memcpy(model, cpu->model, sizeof(*model)); 559 object_unref(obj); 560 } 561 562 static void qdict_add_disabled_feat(const char *name, void *opaque) 563 { 564 qdict_put_bool(opaque, name, false); 565 } 566 567 static void qdict_add_enabled_feat(const char *name, void *opaque) 568 { 569 qdict_put_bool(opaque, name, true); 570 } 571 572 /* convert S390CPUDef into a static CpuModelInfo */ 573 static void cpu_info_from_model(CpuModelInfo *info, const S390CPUModel *model, 574 bool delta_changes) 575 { 576 QDict *qdict = qdict_new(); 577 S390FeatBitmap bitmap; 578 579 /* always fallback to the static base model */ 580 info->name = g_strdup_printf("%s-base", model->def->name); 581 582 if (delta_changes) { 583 /* features deleted from the base feature set */ 584 bitmap_andnot(bitmap, model->def->base_feat, model->features, 585 S390_FEAT_MAX); 586 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) { 587 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat); 588 } 589 590 /* features added to the base feature set */ 591 bitmap_andnot(bitmap, model->features, model->def->base_feat, 592 S390_FEAT_MAX); 593 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) { 594 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_enabled_feat); 595 } 596 } else { 597 /* expand all features */ 598 s390_feat_bitmap_to_ascii(model->features, qdict, 599 qdict_add_enabled_feat); 600 bitmap_complement(bitmap, model->features, S390_FEAT_MAX); 601 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat); 602 } 603 604 if (!qdict_size(qdict)) { 605 qobject_unref(qdict); 606 } else { 607 info->props = QOBJECT(qdict); 608 info->has_props = true; 609 } 610 } 611 612 CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type, 613 CpuModelInfo *model, 614 Error **errp) 615 { 616 Error *err = NULL; 617 CpuModelExpansionInfo *expansion_info = NULL; 618 S390CPUModel s390_model; 619 bool delta_changes = false; 620 621 /* convert it to our internal representation */ 622 cpu_model_from_info(&s390_model, model, &err); 623 if (err) { 624 error_propagate(errp, err); 625 return NULL; 626 } 627 628 if (type == CPU_MODEL_EXPANSION_TYPE_STATIC) { 629 delta_changes = true; 630 } else if (type != CPU_MODEL_EXPANSION_TYPE_FULL) { 631 error_setg(errp, "The requested expansion type is not supported."); 632 return NULL; 633 } 634 635 /* convert it back to a static representation */ 636 expansion_info = g_new0(CpuModelExpansionInfo, 1); 637 expansion_info->model = g_malloc0(sizeof(*expansion_info->model)); 638 cpu_info_from_model(expansion_info->model, &s390_model, delta_changes); 639 return expansion_info; 640 } 641 642 static void list_add_feat(const char *name, void *opaque) 643 { 644 strList **last = (strList **) opaque; 645 646 QAPI_LIST_PREPEND(*last, g_strdup(name)); 647 } 648 649 CpuModelCompareInfo *qmp_query_cpu_model_comparison(CpuModelInfo *infoa, 650 CpuModelInfo *infob, 651 Error **errp) 652 { 653 Error *err = NULL; 654 CpuModelCompareResult feat_result, gen_result; 655 CpuModelCompareInfo *compare_info; 656 S390FeatBitmap missing, added; 657 S390CPUModel modela, modelb; 658 659 /* convert both models to our internal representation */ 660 cpu_model_from_info(&modela, infoa, &err); 661 if (err) { 662 error_propagate(errp, err); 663 return NULL; 664 } 665 cpu_model_from_info(&modelb, infob, &err); 666 if (err) { 667 error_propagate(errp, err); 668 return NULL; 669 } 670 compare_info = g_new0(CpuModelCompareInfo, 1); 671 672 /* check the cpu generation and ga level */ 673 if (modela.def->gen == modelb.def->gen) { 674 if (modela.def->ec_ga == modelb.def->ec_ga) { 675 /* ec and corresponding bc are identical */ 676 gen_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; 677 } else if (modela.def->ec_ga < modelb.def->ec_ga) { 678 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 679 } else { 680 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 681 } 682 } else if (modela.def->gen < modelb.def->gen) { 683 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 684 } else { 685 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 686 } 687 if (gen_result != CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 688 /* both models cannot be made identical */ 689 list_add_feat("type", &compare_info->responsible_properties); 690 } 691 692 /* check the feature set */ 693 if (bitmap_equal(modela.features, modelb.features, S390_FEAT_MAX)) { 694 feat_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL; 695 } else { 696 bitmap_andnot(missing, modela.features, modelb.features, S390_FEAT_MAX); 697 s390_feat_bitmap_to_ascii(missing, 698 &compare_info->responsible_properties, 699 list_add_feat); 700 bitmap_andnot(added, modelb.features, modela.features, S390_FEAT_MAX); 701 s390_feat_bitmap_to_ascii(added, &compare_info->responsible_properties, 702 list_add_feat); 703 if (bitmap_empty(missing, S390_FEAT_MAX)) { 704 feat_result = CPU_MODEL_COMPARE_RESULT_SUBSET; 705 } else if (bitmap_empty(added, S390_FEAT_MAX)) { 706 feat_result = CPU_MODEL_COMPARE_RESULT_SUPERSET; 707 } else { 708 feat_result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; 709 } 710 } 711 712 /* combine the results */ 713 if (gen_result == feat_result) { 714 compare_info->result = gen_result; 715 } else if (feat_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 716 compare_info->result = gen_result; 717 } else if (gen_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) { 718 compare_info->result = feat_result; 719 } else { 720 compare_info->result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE; 721 } 722 return compare_info; 723 } 724 725 CpuModelBaselineInfo *qmp_query_cpu_model_baseline(CpuModelInfo *infoa, 726 CpuModelInfo *infob, 727 Error **errp) 728 { 729 Error *err = NULL; 730 CpuModelBaselineInfo *baseline_info; 731 S390CPUModel modela, modelb, model; 732 uint16_t cpu_type; 733 uint8_t max_gen_ga; 734 uint8_t max_gen; 735 736 /* convert both models to our internal representation */ 737 cpu_model_from_info(&modela, infoa, &err); 738 if (err) { 739 error_propagate(errp, err); 740 return NULL; 741 } 742 743 cpu_model_from_info(&modelb, infob, &err); 744 if (err) { 745 error_propagate(errp, err); 746 return NULL; 747 } 748 749 /* features both models support */ 750 bitmap_and(model.features, modela.features, modelb.features, S390_FEAT_MAX); 751 752 /* detect the maximum model not regarding features */ 753 if (modela.def->gen == modelb.def->gen) { 754 if (modela.def->type == modelb.def->type) { 755 cpu_type = modela.def->type; 756 } else { 757 cpu_type = 0; 758 } 759 max_gen = modela.def->gen; 760 max_gen_ga = MIN(modela.def->ec_ga, modelb.def->ec_ga); 761 } else if (modela.def->gen > modelb.def->gen) { 762 cpu_type = modelb.def->type; 763 max_gen = modelb.def->gen; 764 max_gen_ga = modelb.def->ec_ga; 765 } else { 766 cpu_type = modela.def->type; 767 max_gen = modela.def->gen; 768 max_gen_ga = modela.def->ec_ga; 769 } 770 771 model.def = s390_find_cpu_def(cpu_type, max_gen, max_gen_ga, 772 model.features); 773 774 /* models without early base features (esan3) are bad */ 775 if (!model.def) { 776 error_setg(errp, "No compatible CPU model could be created as" 777 " important base features are disabled"); 778 return NULL; 779 } 780 781 /* strip off features not part of the max model */ 782 bitmap_and(model.features, model.features, model.def->full_feat, 783 S390_FEAT_MAX); 784 785 baseline_info = g_new0(CpuModelBaselineInfo, 1); 786 baseline_info->model = g_malloc0(sizeof(*baseline_info->model)); 787 cpu_info_from_model(baseline_info->model, &model, true); 788 return baseline_info; 789 } 790 #endif 791 792 static void check_consistency(const S390CPUModel *model) 793 { 794 static int dep[][2] = { 795 { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH }, 796 { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH }, 797 { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH }, 798 { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT }, 799 { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH}, 800 { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT }, 801 { S390_FEAT_DFP_FAST, S390_FEAT_DFP }, 802 { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 }, 803 { S390_FEAT_EDAT_2, S390_FEAT_EDAT}, 804 { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 }, 805 { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 }, 806 { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 }, 807 { S390_FEAT_SIE_CMMA, S390_FEAT_CMM }, 808 { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS }, 809 { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT }, 810 { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 }, 811 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_3 }, 812 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_4 }, 813 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 814 { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR }, 815 { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR }, 816 { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 817 { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP }, 818 { S390_FEAT_CMM_NT, S390_FEAT_CMM }, 819 { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 820 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST }, 821 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 822 { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 }, 823 { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA }, 824 { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA }, 825 { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA }, 826 { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA }, 827 { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA }, 828 { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA }, 829 { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA }, 830 { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA }, 831 { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA }, 832 { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA }, 833 { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA }, 834 { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA }, 835 { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 }, 836 { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 }, 837 { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 }, 838 { S390_FEAT_AP_QUERY_CONFIG_INFO, S390_FEAT_AP }, 839 { S390_FEAT_AP_FACILITIES_TEST, S390_FEAT_AP }, 840 { S390_FEAT_PTFF_QSIE, S390_FEAT_MULTIPLE_EPOCH }, 841 { S390_FEAT_PTFF_QTOUE, S390_FEAT_MULTIPLE_EPOCH }, 842 { S390_FEAT_PTFF_STOE, S390_FEAT_MULTIPLE_EPOCH }, 843 { S390_FEAT_PTFF_STOUE, S390_FEAT_MULTIPLE_EPOCH }, 844 { S390_FEAT_AP_QUEUE_INTERRUPT_CONTROL, S390_FEAT_AP }, 845 { S390_FEAT_DIAG_318, S390_FEAT_EXTENDED_LENGTH_SCCB }, 846 }; 847 int i; 848 849 for (i = 0; i < ARRAY_SIZE(dep); i++) { 850 if (test_bit(dep[i][0], model->features) && 851 !test_bit(dep[i][1], model->features)) { 852 warn_report("\'%s\' requires \'%s\'.", 853 s390_feat_def(dep[i][0])->name, 854 s390_feat_def(dep[i][1])->name); 855 } 856 } 857 } 858 859 static void error_prepend_missing_feat(const char *name, void *opaque) 860 { 861 error_prepend((Error **) opaque, "%s ", name); 862 } 863 864 static void check_compatibility(const S390CPUModel *max_model, 865 const S390CPUModel *model, Error **errp) 866 { 867 S390FeatBitmap missing; 868 869 if (model->def->gen > max_model->def->gen) { 870 error_setg(errp, "Selected CPU generation is too new. Maximum " 871 "supported model in the configuration: \'%s\'", 872 max_model->def->name); 873 return; 874 } else if (model->def->gen == max_model->def->gen && 875 model->def->ec_ga > max_model->def->ec_ga) { 876 error_setg(errp, "Selected CPU GA level is too new. Maximum " 877 "supported model in the configuration: \'%s\'", 878 max_model->def->name); 879 return; 880 } 881 882 #ifndef CONFIG_USER_ONLY 883 if (only_migratable && test_bit(S390_FEAT_UNPACK, model->features)) { 884 error_setg(errp, "The unpack facility is not compatible with " 885 "the --only-migratable option. You must remove either " 886 "the 'unpack' facility or the --only-migratable option"); 887 return; 888 } 889 #endif 890 891 /* detect the missing features to properly report them */ 892 bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX); 893 if (bitmap_empty(missing, S390_FEAT_MAX)) { 894 return; 895 } 896 897 error_setg(errp, " "); 898 s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat); 899 error_prepend(errp, "Some features requested in the CPU model are not " 900 "available in the configuration: "); 901 } 902 903 static S390CPUModel *get_max_cpu_model(Error **errp) 904 { 905 Error *err = NULL; 906 static S390CPUModel max_model; 907 static bool cached; 908 909 if (cached) { 910 return &max_model; 911 } 912 913 if (kvm_enabled()) { 914 kvm_s390_get_host_cpu_model(&max_model, &err); 915 } else { 916 max_model.def = s390_find_cpu_def(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 917 QEMU_MAX_CPU_EC_GA, NULL); 918 bitmap_copy(max_model.features, qemu_max_cpu_feat, S390_FEAT_MAX); 919 } 920 if (err) { 921 error_propagate(errp, err); 922 return NULL; 923 } 924 cached = true; 925 return &max_model; 926 } 927 928 static inline void apply_cpu_model(const S390CPUModel *model, Error **errp) 929 { 930 #ifndef CONFIG_USER_ONLY 931 Error *err = NULL; 932 static S390CPUModel applied_model; 933 static bool applied; 934 935 /* 936 * We have the same model for all VCPUs. KVM can only be configured before 937 * any VCPUs are defined in KVM. 938 */ 939 if (applied) { 940 if (model && memcmp(&applied_model, model, sizeof(S390CPUModel))) { 941 error_setg(errp, "Mixed CPU models are not supported on s390x."); 942 } 943 return; 944 } 945 946 if (kvm_enabled()) { 947 kvm_s390_apply_cpu_model(model, &err); 948 if (err) { 949 error_propagate(errp, err); 950 return; 951 } 952 } 953 954 applied = true; 955 if (model) { 956 applied_model = *model; 957 } 958 #endif 959 } 960 961 void s390_realize_cpu_model(CPUState *cs, Error **errp) 962 { 963 Error *err = NULL; 964 S390CPUClass *xcc = S390_CPU_GET_CLASS(cs); 965 S390CPU *cpu = S390_CPU(cs); 966 const S390CPUModel *max_model; 967 968 if (xcc->kvm_required && !kvm_enabled()) { 969 error_setg(errp, "CPU definition requires KVM"); 970 return; 971 } 972 973 if (!cpu->model) { 974 /* no host model support -> perform compatibility stuff */ 975 apply_cpu_model(NULL, errp); 976 return; 977 } 978 979 max_model = get_max_cpu_model(errp); 980 if (!max_model) { 981 error_prepend(errp, "CPU models are not available: "); 982 return; 983 } 984 985 /* copy over properties that can vary */ 986 cpu->model->lowest_ibc = max_model->lowest_ibc; 987 cpu->model->cpu_id = max_model->cpu_id; 988 cpu->model->cpu_id_format = max_model->cpu_id_format; 989 cpu->model->cpu_ver = max_model->cpu_ver; 990 991 check_consistency(cpu->model); 992 check_compatibility(max_model, cpu->model, &err); 993 if (err) { 994 error_propagate(errp, err); 995 return; 996 } 997 998 apply_cpu_model(cpu->model, errp); 999 1000 #if !defined(CONFIG_USER_ONLY) 1001 cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model); 1002 if (tcg_enabled()) { 1003 /* basic mode, write the cpu address into the first 4 bit of the ID */ 1004 cpu->env.cpuid = deposit64(cpu->env.cpuid, 54, 4, cpu->env.core_id); 1005 } 1006 #endif 1007 } 1008 1009 static void get_feature(Object *obj, Visitor *v, const char *name, 1010 void *opaque, Error **errp) 1011 { 1012 S390Feat feat = (S390Feat) (uintptr_t) opaque; 1013 S390CPU *cpu = S390_CPU(obj); 1014 bool value; 1015 1016 if (!cpu->model) { 1017 error_setg(errp, "Details about the host CPU model are not available, " 1018 "features cannot be queried."); 1019 return; 1020 } 1021 1022 value = test_bit(feat, cpu->model->features); 1023 visit_type_bool(v, name, &value, errp); 1024 } 1025 1026 static void set_feature(Object *obj, Visitor *v, const char *name, 1027 void *opaque, Error **errp) 1028 { 1029 S390Feat feat = (S390Feat) (uintptr_t) opaque; 1030 DeviceState *dev = DEVICE(obj); 1031 S390CPU *cpu = S390_CPU(obj); 1032 bool value; 1033 1034 if (dev->realized) { 1035 error_setg(errp, "Attempt to set property '%s' on '%s' after " 1036 "it was realized", name, object_get_typename(obj)); 1037 return; 1038 } else if (!cpu->model) { 1039 error_setg(errp, "Details about the host CPU model are not available, " 1040 "features cannot be changed."); 1041 return; 1042 } 1043 1044 if (!visit_type_bool(v, name, &value, errp)) { 1045 return; 1046 } 1047 if (value) { 1048 if (!test_bit(feat, cpu->model->def->full_feat)) { 1049 error_setg(errp, "Feature '%s' is not available for CPU model '%s'," 1050 " it was introduced with later models.", 1051 name, cpu->model->def->name); 1052 return; 1053 } 1054 set_bit(feat, cpu->model->features); 1055 } else { 1056 clear_bit(feat, cpu->model->features); 1057 } 1058 } 1059 1060 static void get_feature_group(Object *obj, Visitor *v, const char *name, 1061 void *opaque, Error **errp) 1062 { 1063 S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque; 1064 const S390FeatGroupDef *def = s390_feat_group_def(group); 1065 S390CPU *cpu = S390_CPU(obj); 1066 S390FeatBitmap tmp; 1067 bool value; 1068 1069 if (!cpu->model) { 1070 error_setg(errp, "Details about the host CPU model are not available, " 1071 "features cannot be queried."); 1072 return; 1073 } 1074 1075 /* a group is enabled if all features are enabled */ 1076 bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX); 1077 value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX); 1078 visit_type_bool(v, name, &value, errp); 1079 } 1080 1081 static void set_feature_group(Object *obj, Visitor *v, const char *name, 1082 void *opaque, Error **errp) 1083 { 1084 S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque; 1085 const S390FeatGroupDef *def = s390_feat_group_def(group); 1086 DeviceState *dev = DEVICE(obj); 1087 S390CPU *cpu = S390_CPU(obj); 1088 bool value; 1089 1090 if (dev->realized) { 1091 error_setg(errp, "Attempt to set property '%s' on '%s' after " 1092 "it was realized", name, object_get_typename(obj)); 1093 return; 1094 } else if (!cpu->model) { 1095 error_setg(errp, "Details about the host CPU model are not available, " 1096 "features cannot be changed."); 1097 return; 1098 } 1099 1100 if (!visit_type_bool(v, name, &value, errp)) { 1101 return; 1102 } 1103 if (value) { 1104 /* groups are added in one shot, so an intersect is sufficient */ 1105 if (!bitmap_intersects(def->feat, cpu->model->def->full_feat, 1106 S390_FEAT_MAX)) { 1107 error_setg(errp, "Group '%s' is not available for CPU model '%s'," 1108 " it was introduced with later models.", 1109 name, cpu->model->def->name); 1110 return; 1111 } 1112 bitmap_or(cpu->model->features, cpu->model->features, def->feat, 1113 S390_FEAT_MAX); 1114 } else { 1115 bitmap_andnot(cpu->model->features, cpu->model->features, def->feat, 1116 S390_FEAT_MAX); 1117 } 1118 } 1119 1120 static void s390_cpu_model_initfn(Object *obj) 1121 { 1122 S390CPU *cpu = S390_CPU(obj); 1123 S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu); 1124 1125 cpu->model = g_malloc0(sizeof(*cpu->model)); 1126 /* copy the model, so we can modify it */ 1127 cpu->model->def = xcc->cpu_def; 1128 if (xcc->is_static) { 1129 /* base model - features will never change */ 1130 bitmap_copy(cpu->model->features, cpu->model->def->base_feat, 1131 S390_FEAT_MAX); 1132 } else { 1133 /* latest model - features can change */ 1134 bitmap_copy(cpu->model->features, 1135 cpu->model->def->default_feat, S390_FEAT_MAX); 1136 } 1137 } 1138 1139 static S390CPUDef s390_qemu_cpu_def; 1140 static S390CPUModel s390_qemu_cpu_model; 1141 1142 /* Set the qemu CPU model (on machine initialization). Must not be called 1143 * once CPUs have been created. 1144 */ 1145 void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga, 1146 const S390FeatInit feat_init) 1147 { 1148 const S390CPUDef *def = s390_find_cpu_def(type, gen, ec_ga, NULL); 1149 1150 g_assert(def); 1151 g_assert(QTAILQ_EMPTY_RCU(&cpus)); 1152 1153 /* TCG emulates some features that can usually not be enabled with 1154 * the emulated machine generation. Make sure they can be enabled 1155 * when using the QEMU model by adding them to full_feat. We have 1156 * to copy the definition to do that. 1157 */ 1158 memcpy(&s390_qemu_cpu_def, def, sizeof(s390_qemu_cpu_def)); 1159 bitmap_or(s390_qemu_cpu_def.full_feat, s390_qemu_cpu_def.full_feat, 1160 qemu_max_cpu_feat, S390_FEAT_MAX); 1161 1162 /* build the CPU model */ 1163 s390_qemu_cpu_model.def = &s390_qemu_cpu_def; 1164 bitmap_zero(s390_qemu_cpu_model.features, S390_FEAT_MAX); 1165 s390_init_feat_bitmap(feat_init, s390_qemu_cpu_model.features); 1166 } 1167 1168 static void s390_qemu_cpu_model_initfn(Object *obj) 1169 { 1170 S390CPU *cpu = S390_CPU(obj); 1171 1172 cpu->model = g_malloc0(sizeof(*cpu->model)); 1173 /* copy the CPU model so we can modify it */ 1174 memcpy(cpu->model, &s390_qemu_cpu_model, sizeof(*cpu->model)); 1175 } 1176 1177 static void s390_max_cpu_model_initfn(Object *obj) 1178 { 1179 const S390CPUModel *max_model; 1180 S390CPU *cpu = S390_CPU(obj); 1181 Error *local_err = NULL; 1182 1183 if (kvm_enabled() && !kvm_s390_cpu_models_supported()) { 1184 /* "max" and "host" always work, even without CPU model support */ 1185 return; 1186 } 1187 1188 max_model = get_max_cpu_model(&local_err); 1189 if (local_err) { 1190 /* we expect errors only under KVM, when actually querying the kernel */ 1191 g_assert(kvm_enabled()); 1192 error_report_err(local_err); 1193 /* fallback to unsupported CPU models */ 1194 return; 1195 } 1196 1197 cpu->model = g_new(S390CPUModel, 1); 1198 /* copy the CPU model so we can modify it */ 1199 memcpy(cpu->model, max_model, sizeof(*cpu->model)); 1200 } 1201 1202 static void s390_cpu_model_finalize(Object *obj) 1203 { 1204 S390CPU *cpu = S390_CPU(obj); 1205 1206 g_free(cpu->model); 1207 cpu->model = NULL; 1208 } 1209 1210 static bool get_is_migration_safe(Object *obj, Error **errp) 1211 { 1212 return S390_CPU_GET_CLASS(obj)->is_migration_safe; 1213 } 1214 1215 static bool get_is_static(Object *obj, Error **errp) 1216 { 1217 return S390_CPU_GET_CLASS(obj)->is_static; 1218 } 1219 1220 static char *get_description(Object *obj, Error **errp) 1221 { 1222 return g_strdup(S390_CPU_GET_CLASS(obj)->desc); 1223 } 1224 1225 void s390_cpu_model_class_register_props(ObjectClass *oc) 1226 { 1227 S390FeatGroup group; 1228 S390Feat feat; 1229 1230 object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe, 1231 NULL); 1232 object_class_property_add_bool(oc, "static", get_is_static, 1233 NULL); 1234 object_class_property_add_str(oc, "description", get_description, NULL); 1235 1236 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 1237 const S390FeatDef *def = s390_feat_def(feat); 1238 object_class_property_add(oc, def->name, "bool", get_feature, 1239 set_feature, NULL, (void *) feat); 1240 object_class_property_set_description(oc, def->name, def->desc); 1241 } 1242 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 1243 const S390FeatGroupDef *def = s390_feat_group_def(group); 1244 object_class_property_add(oc, def->name, "bool", get_feature_group, 1245 set_feature_group, NULL, (void *) group); 1246 object_class_property_set_description(oc, def->name, def->desc); 1247 } 1248 } 1249 1250 #ifdef CONFIG_KVM 1251 static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data) 1252 { 1253 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1254 1255 xcc->kvm_required = true; 1256 xcc->desc = "KVM only: All recognized features"; 1257 } 1258 #endif 1259 1260 static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data) 1261 { 1262 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1263 1264 /* all base models are migration safe */ 1265 xcc->cpu_def = (const S390CPUDef *) data; 1266 xcc->is_migration_safe = true; 1267 xcc->is_static = true; 1268 xcc->desc = xcc->cpu_def->desc; 1269 } 1270 1271 static void s390_cpu_model_class_init(ObjectClass *oc, void *data) 1272 { 1273 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1274 1275 /* model that can change between QEMU versions */ 1276 xcc->cpu_def = (const S390CPUDef *) data; 1277 xcc->is_migration_safe = true; 1278 xcc->desc = xcc->cpu_def->desc; 1279 } 1280 1281 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data) 1282 { 1283 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1284 1285 xcc->is_migration_safe = true; 1286 xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s", 1287 qemu_hw_version()); 1288 } 1289 1290 static void s390_max_cpu_model_class_init(ObjectClass *oc, void *data) 1291 { 1292 S390CPUClass *xcc = S390_CPU_CLASS(oc); 1293 1294 /* 1295 * The "max" model is neither static nor migration safe. Under KVM 1296 * it represents the "host" model. Under TCG it represents some kind of 1297 * "qemu" CPU model without compat handling and maybe with some additional 1298 * CPU features that are not yet unlocked in the "qemu" model. 1299 */ 1300 xcc->desc = 1301 "Enables all features supported by the accelerator in the current host"; 1302 } 1303 1304 /* Generate type name for a cpu model. Caller has to free the string. */ 1305 static char *s390_cpu_type_name(const char *model_name) 1306 { 1307 return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name); 1308 } 1309 1310 /* Generate type name for a base cpu model. Caller has to free the string. */ 1311 static char *s390_base_cpu_type_name(const char *model_name) 1312 { 1313 return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name); 1314 } 1315 1316 ObjectClass *s390_cpu_class_by_name(const char *name) 1317 { 1318 char *typename = s390_cpu_type_name(name); 1319 ObjectClass *oc; 1320 1321 oc = object_class_by_name(typename); 1322 g_free(typename); 1323 return oc; 1324 } 1325 1326 static const TypeInfo qemu_s390_cpu_type_info = { 1327 .name = S390_CPU_TYPE_NAME("qemu"), 1328 .parent = TYPE_S390_CPU, 1329 .instance_init = s390_qemu_cpu_model_initfn, 1330 .instance_finalize = s390_cpu_model_finalize, 1331 .class_init = s390_qemu_cpu_model_class_init, 1332 }; 1333 1334 static const TypeInfo max_s390_cpu_type_info = { 1335 .name = S390_CPU_TYPE_NAME("max"), 1336 .parent = TYPE_S390_CPU, 1337 .instance_init = s390_max_cpu_model_initfn, 1338 .instance_finalize = s390_cpu_model_finalize, 1339 .class_init = s390_max_cpu_model_class_init, 1340 }; 1341 1342 #ifdef CONFIG_KVM 1343 static const TypeInfo host_s390_cpu_type_info = { 1344 .name = S390_CPU_TYPE_NAME("host"), 1345 .parent = S390_CPU_TYPE_NAME("max"), 1346 .class_init = s390_host_cpu_model_class_init, 1347 }; 1348 #endif 1349 1350 static void init_ignored_base_feat(void) 1351 { 1352 static const int feats[] = { 1353 /* MSA subfunctions that could not be available on certain machines */ 1354 S390_FEAT_KMAC_DEA, 1355 S390_FEAT_KMAC_TDEA_128, 1356 S390_FEAT_KMAC_TDEA_192, 1357 S390_FEAT_KMC_DEA, 1358 S390_FEAT_KMC_TDEA_128, 1359 S390_FEAT_KMC_TDEA_192, 1360 S390_FEAT_KM_DEA, 1361 S390_FEAT_KM_TDEA_128, 1362 S390_FEAT_KM_TDEA_192, 1363 S390_FEAT_KIMD_SHA_1, 1364 S390_FEAT_KLMD_SHA_1, 1365 /* CSSKE is deprecated on newer generations */ 1366 S390_FEAT_CONDITIONAL_SSKE, 1367 }; 1368 int i; 1369 1370 for (i = 0; i < ARRAY_SIZE(feats); i++) { 1371 set_bit(feats[i], ignored_base_feat); 1372 } 1373 } 1374 1375 static void register_types(void) 1376 { 1377 static const S390FeatInit qemu_latest_init = { S390_FEAT_LIST_QEMU_LATEST }; 1378 int i; 1379 1380 init_ignored_base_feat(); 1381 1382 /* init all bitmaps from gnerated data initially */ 1383 s390_init_feat_bitmap(qemu_max_cpu_feat_init, qemu_max_cpu_feat); 1384 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 1385 s390_init_feat_bitmap(s390_cpu_defs[i].base_init, 1386 s390_cpu_defs[i].base_feat); 1387 s390_init_feat_bitmap(s390_cpu_defs[i].default_init, 1388 s390_cpu_defs[i].default_feat); 1389 s390_init_feat_bitmap(s390_cpu_defs[i].full_init, 1390 s390_cpu_defs[i].full_feat); 1391 } 1392 1393 /* initialize the qemu model with latest definition */ 1394 s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 1395 QEMU_MAX_CPU_EC_GA, qemu_latest_init); 1396 1397 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 1398 char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name); 1399 TypeInfo ti_base = { 1400 .name = base_name, 1401 .parent = TYPE_S390_CPU, 1402 .instance_init = s390_cpu_model_initfn, 1403 .instance_finalize = s390_cpu_model_finalize, 1404 .class_init = s390_base_cpu_model_class_init, 1405 .class_data = (void *) &s390_cpu_defs[i], 1406 }; 1407 char *name = s390_cpu_type_name(s390_cpu_defs[i].name); 1408 TypeInfo ti = { 1409 .name = name, 1410 .parent = TYPE_S390_CPU, 1411 .instance_init = s390_cpu_model_initfn, 1412 .instance_finalize = s390_cpu_model_finalize, 1413 .class_init = s390_cpu_model_class_init, 1414 .class_data = (void *) &s390_cpu_defs[i], 1415 }; 1416 1417 type_register_static(&ti_base); 1418 type_register_static(&ti); 1419 g_free(base_name); 1420 g_free(name); 1421 } 1422 1423 type_register_static(&qemu_s390_cpu_type_info); 1424 type_register_static(&max_s390_cpu_type_info); 1425 #ifdef CONFIG_KVM 1426 type_register_static(&host_s390_cpu_type_info); 1427 #endif 1428 } 1429 1430 type_init(register_types) 1431