target/s390x/cpu_models.c

   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
  33 #define CPUDEF_INIT(_type, _gen, _ec_ga, _mha_pow, _hmfai, _name, _desc) \
  34     {                                                                    \
  35         .name = _name,                                                   \
  36         .type = _type,                                                   \
  37         .gen = _gen,                                                     \
  38         .ec_ga = _ec_ga,                                                 \
  39         .mha_pow = _mha_pow,                                             \
  40         .hmfai = _hmfai,                                                 \
  41         .desc = _desc,                                                   \
  42         .base_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _BASE },  \
  43         .default_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _DEFAULT },  \
  44         .full_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _FULL },  \
  45     }
  46
  47 /*
  48  * CPU definition list in order of release. Up to generation 14 base features
  49  * of a following release have been a superset of the previous release. With
  50  * generation 15 one base feature and one optional feature have been deprecated.
  51  */
  52 static S390CPUDef s390_cpu_defs[] = {
  53     CPUDEF_INIT(0x2064, 7, 1, 38, 0x00000000U, "z900", "IBM zSeries 900 GA1"),
  54     CPUDEF_INIT(0x2064, 7, 2, 38, 0x00000000U, "z900.2", "IBM zSeries 900 GA2"),
  55     CPUDEF_INIT(0x2064, 7, 3, 38, 0x00000000U, "z900.3", "IBM zSeries 900 GA3"),
  56     CPUDEF_INIT(0x2066, 7, 3, 38, 0x00000000U, "z800", "IBM zSeries 800 GA1"),
  57     CPUDEF_INIT(0x2084, 8, 1, 38, 0x00000000U, "z990", "IBM zSeries 990 GA1"),
  58     CPUDEF_INIT(0x2084, 8, 2, 38, 0x00000000U, "z990.2", "IBM zSeries 990 GA2"),
  59     CPUDEF_INIT(0x2084, 8, 3, 38, 0x00000000U, "z990.3", "IBM zSeries 990 GA3"),
  60     CPUDEF_INIT(0x2086, 8, 3, 38, 0x00000000U, "z890", "IBM zSeries 880 GA1"),
  61     CPUDEF_INIT(0x2084, 8, 4, 38, 0x00000000U, "z990.4", "IBM zSeries 990 GA4"),
  62     CPUDEF_INIT(0x2086, 8, 4, 38, 0x00000000U, "z890.2", "IBM zSeries 880 GA2"),
  63     CPUDEF_INIT(0x2084, 8, 5, 38, 0x00000000U, "z990.5", "IBM zSeries 990 GA5"),
  64     CPUDEF_INIT(0x2086, 8, 5, 38, 0x00000000U, "z890.3", "IBM zSeries 880 GA3"),
  65     CPUDEF_INIT(0x2094, 9, 1, 40, 0x00000000U, "z9EC", "IBM System z9 EC GA1"),
  66     CPUDEF_INIT(0x2094, 9, 2, 40, 0x00000000U, "z9EC.2", "IBM System z9 EC GA2"),
  67     CPUDEF_INIT(0x2096, 9, 2, 40, 0x00000000U, "z9BC", "IBM System z9 BC GA1"),
  68     CPUDEF_INIT(0x2094, 9, 3, 40, 0x00000000U, "z9EC.3", "IBM System z9 EC GA3"),
  69     CPUDEF_INIT(0x2096, 9, 3, 40, 0x00000000U, "z9BC.2", "IBM System z9 BC GA2"),
  70     CPUDEF_INIT(0x2097, 10, 1, 43, 0x00000000U, "z10EC", "IBM System z10 EC GA1"),
  71     CPUDEF_INIT(0x2097, 10, 2, 43, 0x00000000U, "z10EC.2", "IBM System z10 EC GA2"),
  72     CPUDEF_INIT(0x2098, 10, 2, 43, 0x00000000U, "z10BC", "IBM System z10 BC GA1"),
  73     CPUDEF_INIT(0x2097, 10, 3, 43, 0x00000000U, "z10EC.3", "IBM System z10 EC GA3"),
  74     CPUDEF_INIT(0x2098, 10, 3, 43, 0x00000000U, "z10BC.2", "IBM System z10 BC GA2"),
  75     CPUDEF_INIT(0x2817, 11, 1, 44, 0x08000000U, "z196", "IBM zEnterprise 196 GA1"),
  76     CPUDEF_INIT(0x2817, 11, 2, 44, 0x08000000U, "z196.2", "IBM zEnterprise 196 GA2"),
  77     CPUDEF_INIT(0x2818, 11, 2, 44, 0x08000000U, "z114", "IBM zEnterprise 114 GA1"),
  78     CPUDEF_INIT(0x2827, 12, 1, 44, 0x08000000U, "zEC12", "IBM zEnterprise EC12 GA1"),
  79     CPUDEF_INIT(0x2827, 12, 2, 44, 0x08000000U, "zEC12.2", "IBM zEnterprise EC12 GA2"),
  80     CPUDEF_INIT(0x2828, 12, 2, 44, 0x08000000U, "zBC12", "IBM zEnterprise BC12 GA1"),
  81     CPUDEF_INIT(0x2964, 13, 1, 47, 0x08000000U, "z13", "IBM z13 GA1"),
  82     CPUDEF_INIT(0x2964, 13, 2, 47, 0x08000000U, "z13.2", "IBM z13 GA2"),
  83     CPUDEF_INIT(0x2965, 13, 2, 47, 0x08000000U, "z13s", "IBM z13s GA1"),
  84     CPUDEF_INIT(0x3906, 14, 1, 47, 0x08000000U, "z14", "IBM z14 GA1"),
  85     CPUDEF_INIT(0x3906, 14, 2, 47, 0x08000000U, "z14.2", "IBM z14 GA2"),
  86     CPUDEF_INIT(0x3907, 14, 1, 47, 0x08000000U, "z14ZR1", "IBM z14 Model ZR1 GA1"),
  87     CPUDEF_INIT(0x8561, 15, 1, 47, 0x08000000U, "gen15a", "IBM z15 GA1"),
  88     CPUDEF_INIT(0x8562, 15, 1, 47, 0x08000000U, "gen15b", "IBM 8562 GA1"),
  89 };
  90
  91 #define QEMU_MAX_CPU_TYPE 0x2964
  92 #define QEMU_MAX_CPU_GEN 13
  93 #define QEMU_MAX_CPU_EC_GA 2
  94 static const S390FeatInit qemu_max_cpu_feat_init = { S390_FEAT_LIST_QEMU_MAX };
  95 static S390FeatBitmap qemu_max_cpu_feat;
  96
  97 /* features part of a base model but not relevant for finding a base model */
  98 S390FeatBitmap ignored_base_feat;
  99
 100 void s390_cpudef_featoff(uint8_t gen, uint8_t ec_ga, S390Feat feat)
 101 {
 102     const S390CPUDef *def;
 103
 104     def = s390_find_cpu_def(0, gen, ec_ga, NULL);
 105     clear_bit(feat, (unsigned long *)&def->default_feat);
 106 }
 107
 108 void s390_cpudef_featoff_greater(uint8_t gen, uint8_t ec_ga, S390Feat feat)
 109 {
 110     int i;
 111
 112     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
 113         const S390CPUDef *def = &s390_cpu_defs[i];
 114
 115         if (def->gen < gen) {
 116             continue;
 117         }
 118         if (def->gen == gen && def->ec_ga < ec_ga) {
 119             continue;
 120         }
 121
 122         clear_bit(feat, (unsigned long *)&def->default_feat);
 123     }
 124 }
 125
 126 void s390_cpudef_group_featoff_greater(uint8_t gen, uint8_t ec_ga,
 127                                        S390FeatGroup group)
 128 {
 129     const S390FeatGroupDef *group_def = s390_feat_group_def(group);
 130     S390FeatBitmap group_def_off;
 131     int i;
 132
 133     bitmap_complement(group_def_off, group_def->feat, S390_FEAT_MAX);
 134
 135     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
 136         const S390CPUDef *cpu_def = &s390_cpu_defs[i];
 137
 138         if (cpu_def->gen < gen) {
 139             continue;
 140         }
 141         if (cpu_def->gen == gen && cpu_def->ec_ga < ec_ga) {
 142             continue;
 143         }
 144
 145         bitmap_and((unsigned long *)&cpu_def->default_feat,
 146                    cpu_def->default_feat, group_def_off, S390_FEAT_MAX);
 147     }
 148 }
 149
 150 uint32_t s390_get_hmfai(void)
 151 {
 152     static S390CPU *cpu;
 153
 154     if (!cpu) {
 155         cpu = S390_CPU(qemu_get_cpu(0));
 156     }
 157
 158     if (!cpu || !cpu->model) {
 159         return 0;
 160     }
 161     return cpu->model->def->hmfai;
 162 }
 163
 164 uint8_t s390_get_mha_pow(void)
 165 {
 166     static S390CPU *cpu;
 167
 168     if (!cpu) {
 169         cpu = S390_CPU(qemu_get_cpu(0));
 170     }
 171
 172     if (!cpu || !cpu->model) {
 173         return 0;
 174     }
 175     return cpu->model->def->mha_pow;
 176 }
 177
 178 uint32_t s390_get_ibc_val(void)
 179 {
 180     uint16_t unblocked_ibc, lowest_ibc;
 181     static S390CPU *cpu;
 182
 183     if (!cpu) {
 184         cpu = S390_CPU(qemu_get_cpu(0));
 185     }
 186
 187     if (!cpu || !cpu->model) {
 188         return 0;
 189     }
 190     unblocked_ibc = s390_ibc_from_cpu_model(cpu->model);
 191     lowest_ibc = cpu->model->lowest_ibc;
 192     /* the lowest_ibc always has to be <= unblocked_ibc */
 193     if (!lowest_ibc || lowest_ibc > unblocked_ibc) {
 194         return 0;
 195     }
 196     return ((uint32_t) lowest_ibc << 16) | unblocked_ibc;
 197 }
 198
 199 void s390_get_feat_block(S390FeatType type, uint8_t *data)
 200 {
 201     static S390CPU *cpu;
 202
 203     if (!cpu) {
 204         cpu = S390_CPU(qemu_get_cpu(0));
 205     }
 206
 207     if (!cpu || !cpu->model) {
 208         return;
 209     }
 210     s390_fill_feat_block(cpu->model->features, type, data);
 211 }
 212
 213 bool s390_has_feat(S390Feat feat)
 214 {
 215     static S390CPU *cpu;
 216
 217     if (!cpu) {
 218         cpu = S390_CPU(qemu_get_cpu(0));
 219     }
 220
 221     if (!cpu || !cpu->model) {
 222 #ifdef CONFIG_KVM
 223         if (kvm_enabled()) {
 224             if (feat == S390_FEAT_VECTOR) {
 225                 return kvm_check_extension(kvm_state,
 226                                            KVM_CAP_S390_VECTOR_REGISTERS);
 227             }
 228             if (feat == S390_FEAT_RUNTIME_INSTRUMENTATION) {
 229                 return kvm_s390_get_ri();
 230             }
 231             if (feat == S390_FEAT_MSA_EXT_3) {
 232                 return true;
 233             }
 234         }
 235 #endif
 236         if (feat == S390_FEAT_ZPCI) {
 237             return true;
 238         }
 239         return 0;
 240     }
 241     return test_bit(feat, cpu->model->features);
 242 }
 243
 244 uint8_t s390_get_gen_for_cpu_type(uint16_t type)
 245 {
 246     int i;
 247
 248     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
 249         if (s390_cpu_defs[i].type == type) {
 250             return s390_cpu_defs[i].gen;
 251         }
 252     }
 253     return 0;
 254 }
 255
 256 const S390CPUDef *s390_find_cpu_def(uint16_t type, uint8_t gen, uint8_t ec_ga,
 257                                     S390FeatBitmap features)
 258 {
 259     const S390CPUDef *last_compatible = NULL;
 260     const S390CPUDef *matching_cpu_type = NULL;
 261     int i;
 262
 263     if (!gen) {
 264         ec_ga = 0;
 265     }
 266     if (!gen && type) {
 267         gen = s390_get_gen_for_cpu_type(type);
 268     }
 269
 270     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
 271         const S390CPUDef *def = &s390_cpu_defs[i];
 272         S390FeatBitmap missing;
 273
 274         /* don't even try newer generations if we know the generation */
 275         if (gen) {
 276             if (def->gen > gen) {
 277                 break;
 278             } else if (def->gen == gen && ec_ga && def->ec_ga > ec_ga) {
 279                 break;
 280             }
 281         }
 282
 283         if (features) {
 284             /* see if the model satisfies the minimum features */
 285             bitmap_andnot(missing, def->base_feat, features, S390_FEAT_MAX);
 286             /*
 287              * Ignore certain features that are in the base model, but not
 288              * relevant for the search (esp. MSA subfunctions).
 289              */
 290             bitmap_andnot(missing, missing, ignored_base_feat, S390_FEAT_MAX);
 291             if (!bitmap_empty(missing, S390_FEAT_MAX)) {
 292                 break;
 293             }
 294         }
 295
 296         /* stop the search if we found the exact model */
 297         if (def->type == type && def->ec_ga == ec_ga) {
 298             return def;
 299         }
 300         /* remember if we've at least seen one with the same cpu type */
 301         if (def->type == type) {
 302             matching_cpu_type = def;
 303         }
 304         last_compatible = def;
 305     }
 306     /* prefer the model with the same cpu type, esp. don't take the BC for EC */
 307     if (matching_cpu_type) {
 308         return matching_cpu_type;
 309     }
 310     return last_compatible;
 311 }
 312
 313 static void s390_print_cpu_model_list_entry(gpointer data, gpointer user_data)
 314 {
 315     const S390CPUClass *scc = S390_CPU_CLASS((ObjectClass *)data);
 316     char *name = g_strdup(object_class_get_name((ObjectClass *)data));
 317     const char *details = "";
 318
 319     if (scc->is_static) {
 320         details = "(static, migration-safe)";
 321     } else if (scc->is_migration_safe) {
 322         details = "(migration-safe)";
 323     }
 324
 325     /* strip off the -s390x-cpu */
 326     g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0;
 327     qemu_printf("s390 %-15s %-35s %s\n", name, scc->desc, details);
 328     g_free(name);
 329 }
 330
 331 static gint s390_cpu_list_compare(gconstpointer a, gconstpointer b)
 332 {
 333     const S390CPUClass *cc_a = S390_CPU_CLASS((ObjectClass *)a);
 334     const S390CPUClass *cc_b = S390_CPU_CLASS((ObjectClass *)b);
 335     const char *name_a = object_class_get_name((ObjectClass *)a);
 336     const char *name_b = object_class_get_name((ObjectClass *)b);
 337
 338     /*
 339      * Move qemu, host and max to the top of the list, qemu first, host second,
 340      * max third.
 341      */
 342     if (name_a[0] == 'q') {
 343         return -1;
 344     } else if (name_b[0] == 'q') {
 345         return 1;
 346     } else if (name_a[0] == 'h') {
 347         return -1;
 348     } else if (name_b[0] == 'h') {
 349         return 1;
 350     } else if (name_a[0] == 'm') {
 351         return -1;
 352     } else if (name_b[0] == 'm') {
 353         return 1;
 354     }
 355
 356     /* keep the same order we have in our table (sorted by release date) */
 357     if (cc_a->cpu_def != cc_b->cpu_def) {
 358         return cc_a->cpu_def - cc_b->cpu_def;
 359     }
 360
 361     /* exact same definition - list base model first */
 362     return cc_a->is_static ? -1 : 1;
 363 }
 364
 365 void s390_cpu_list(void)
 366 {
 367     S390FeatGroup group;
 368     S390Feat feat;
 369     GSList *list;
 370
 371     list = object_class_get_list(TYPE_S390_CPU, false);
 372     list = g_slist_sort(list, s390_cpu_list_compare);
 373     g_slist_foreach(list, s390_print_cpu_model_list_entry, NULL);
 374     g_slist_free(list);
 375
 376     qemu_printf("\nRecognized feature flags:\n");
 377     for (feat = 0; feat < S390_FEAT_MAX; feat++) {
 378         const S390FeatDef *def = s390_feat_def(feat);
 379
 380         qemu_printf("%-20s %-50s\n", def->name, def->desc);
 381     }
 382
 383     qemu_printf("\nRecognized feature groups:\n");
 384     for (group = 0; group < S390_FEAT_GROUP_MAX; group++) {
 385         const S390FeatGroupDef *def = s390_feat_group_def(group);
 386
 387         qemu_printf("%-20s %-50s\n", def->name, def->desc);
 388     }
 389 }
 390
 391 static S390CPUModel *get_max_cpu_model(Error **errp);
 392
 393 #ifndef CONFIG_USER_ONLY
 394 static void list_add_feat(const char *name, void *opaque);
 395
 396 static void check_unavailable_features(const S390CPUModel *max_model,
 397                                        const S390CPUModel *model,
 398                                        strList **unavailable)
 399 {
 400     S390FeatBitmap missing;
 401
 402     /* check general model compatibility */
 403     if (max_model->def->gen < model->def->gen ||
 404         (max_model->def->gen == model->def->gen &&
 405          max_model->def->ec_ga < model->def->ec_ga)) {
 406         list_add_feat("type", unavailable);
 407     }
 408
 409     /* detect missing features if any to properly report them */
 410     bitmap_andnot(missing, model->features, max_model->features,
 411                   S390_FEAT_MAX);
 412     if (!bitmap_empty(missing, S390_FEAT_MAX)) {
 413         s390_feat_bitmap_to_ascii(missing, unavailable, list_add_feat);
 414     }
 415 }
 416
 417 struct CpuDefinitionInfoListData {
 418     CpuDefinitionInfoList *list;
 419     S390CPUModel *model;
 420 };
 421
 422 static void create_cpu_model_list(ObjectClass *klass, void *opaque)
 423 {
 424     struct CpuDefinitionInfoListData *cpu_list_data = opaque;
 425     CpuDefinitionInfoList **cpu_list = &cpu_list_data->list;
 426     CpuDefinitionInfoList *entry;
 427     CpuDefinitionInfo *info;
 428     char *name = g_strdup(object_class_get_name(klass));
 429     S390CPUClass *scc = S390_CPU_CLASS(klass);
 430
 431     /* strip off the -s390x-cpu */
 432     g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0;
 433     info = g_new0(CpuDefinitionInfo, 1);
 434     info->name = name;
 435     info->has_migration_safe = true;
 436     info->migration_safe = scc->is_migration_safe;
 437     info->q_static = scc->is_static;
 438     info->q_typename = g_strdup(object_class_get_name(klass));
 439     /* check for unavailable features */
 440     if (cpu_list_data->model) {
 441         Object *obj;
 442         S390CPU *sc;
 443         obj = object_new_with_class(klass);
 444         sc = S390_CPU(obj);
 445         if (sc->model) {
 446             info->has_unavailable_features = true;
 447             check_unavailable_features(cpu_list_data->model, sc->model,
 448                                        &info->unavailable_features);
 449         }
 450         object_unref(obj);
 451     }
 452
 453     entry = g_new0(CpuDefinitionInfoList, 1);
 454     entry->value = info;
 455     entry->next = *cpu_list;
 456     *cpu_list = entry;
 457 }
 458
 459 CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp)
 460 {
 461     struct CpuDefinitionInfoListData list_data = {
 462         .list = NULL,
 463     };
 464
 465     list_data.model = get_max_cpu_model(NULL);
 466
 467     object_class_foreach(create_cpu_model_list, TYPE_S390_CPU, false,
 468                          &list_data);
 469
 470     return list_data.list;
 471 }
 472
 473 static void cpu_model_from_info(S390CPUModel *model, const CpuModelInfo *info,
 474                                 Error **errp)
 475 {
 476     Error *err = NULL;
 477     const QDict *qdict = NULL;
 478     const QDictEntry *e;
 479     Visitor *visitor;
 480     ObjectClass *oc;
 481     S390CPU *cpu;
 482     Object *obj;
 483
 484     if (info->props) {
 485         qdict = qobject_to(QDict, info->props);
 486         if (!qdict) {
 487             error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict");
 488             return;
 489         }
 490     }
 491
 492     oc = cpu_class_by_name(TYPE_S390_CPU, info->name);
 493     if (!oc) {
 494         error_setg(errp, "The CPU definition \'%s\' is unknown.", info->name);
 495         return;
 496     }
 497     if (S390_CPU_CLASS(oc)->kvm_required && !kvm_enabled()) {
 498         error_setg(errp, "The CPU definition '%s' requires KVM", info->name);
 499         return;
 500     }
 501     obj = object_new_with_class(oc);
 502     cpu = S390_CPU(obj);
 503
 504     if (!cpu->model) {
 505         error_setg(errp, "Details about the host CPU model are not available, "
 506                          "it cannot be used.");
 507         object_unref(obj);
 508         return;
 509     }
 510
 511     if (qdict) {
 512         visitor = qobject_input_visitor_new(info->props);
 513         visit_start_struct(visitor, NULL, NULL, 0, &err);
 514         if (err) {
 515             error_propagate(errp, err);
 516             visit_free(visitor);
 517             object_unref(obj);
 518             return;
 519         }
 520         for (e = qdict_first(qdict); e; e = qdict_next(qdict, e)) {
 521             object_property_set(obj, visitor, e->key, &err);
 522             if (err) {
 523                 break;
 524             }
 525         }
 526         if (!err) {
 527             visit_check_struct(visitor, errp);
 528         }
 529         visit_end_struct(visitor, NULL);
 530         visit_free(visitor);
 531         if (err) {
 532             error_propagate(errp, err);
 533             object_unref(obj);
 534             return;
 535         }
 536     }
 537
 538     /* copy the model and throw the cpu away */
 539     memcpy(model, cpu->model, sizeof(*model));
 540     object_unref(obj);
 541 }
 542
 543 static void qdict_add_disabled_feat(const char *name, void *opaque)
 544 {
 545     qdict_put_bool(opaque, name, false);
 546 }
 547
 548 static void qdict_add_enabled_feat(const char *name, void *opaque)
 549 {
 550     qdict_put_bool(opaque, name, true);
 551 }
 552
 553 /* convert S390CPUDef into a static CpuModelInfo */
 554 static void cpu_info_from_model(CpuModelInfo *info, const S390CPUModel *model,
 555                                 bool delta_changes)
 556 {
 557     QDict *qdict = qdict_new();
 558     S390FeatBitmap bitmap;
 559
 560     /* always fallback to the static base model */
 561     info->name = g_strdup_printf("%s-base", model->def->name);
 562
 563     if (delta_changes) {
 564         /* features deleted from the base feature set */
 565         bitmap_andnot(bitmap, model->def->base_feat, model->features,
 566                       S390_FEAT_MAX);
 567         if (!bitmap_empty(bitmap, S390_FEAT_MAX)) {
 568             s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat);
 569         }
 570
 571         /* features added to the base feature set */
 572         bitmap_andnot(bitmap, model->features, model->def->base_feat,
 573                       S390_FEAT_MAX);
 574         if (!bitmap_empty(bitmap, S390_FEAT_MAX)) {
 575             s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_enabled_feat);
 576         }
 577     } else {
 578         /* expand all features */
 579         s390_feat_bitmap_to_ascii(model->features, qdict,
 580                                   qdict_add_enabled_feat);
 581         bitmap_complement(bitmap, model->features, S390_FEAT_MAX);
 582         s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat);
 583     }
 584
 585     if (!qdict_size(qdict)) {
 586         qobject_unref(qdict);
 587     } else {
 588         info->props = QOBJECT(qdict);
 589         info->has_props = true;
 590     }
 591 }
 592
 593 CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,
 594                                                       CpuModelInfo *model,
 595                                                       Error **errp)
 596 {
 597     Error *err = NULL;
 598     CpuModelExpansionInfo *expansion_info = NULL;
 599     S390CPUModel s390_model;
 600     bool delta_changes = false;
 601
 602     /* convert it to our internal representation */
 603     cpu_model_from_info(&s390_model, model, &err);
 604     if (err) {
 605         error_propagate(errp, err);
 606         return NULL;
 607     }
 608
 609     if (type == CPU_MODEL_EXPANSION_TYPE_STATIC) {
 610         delta_changes = true;
 611     } else if (type != CPU_MODEL_EXPANSION_TYPE_FULL) {
 612         error_setg(errp, "The requested expansion type is not supported.");
 613         return NULL;
 614     }
 615
 616     /* convert it back to a static representation */
 617     expansion_info = g_new0(CpuModelExpansionInfo, 1);
 618     expansion_info->model = g_malloc0(sizeof(*expansion_info->model));
 619     cpu_info_from_model(expansion_info->model, &s390_model, delta_changes);
 620     return expansion_info;
 621 }
 622
 623 static void list_add_feat(const char *name, void *opaque)
 624 {
 625     strList **last = (strList **) opaque;
 626     strList *entry;
 627
 628     entry = g_new0(strList, 1);
 629     entry->value = g_strdup(name);
 630     entry->next = *last;
 631     *last = entry;
 632 }
 633
 634 CpuModelCompareInfo *qmp_query_cpu_model_comparison(CpuModelInfo *infoa,
 635                                                      CpuModelInfo *infob,
 636                                                      Error **errp)
 637 {
 638     Error *err = NULL;
 639     CpuModelCompareResult feat_result, gen_result;
 640     CpuModelCompareInfo *compare_info;
 641     S390FeatBitmap missing, added;
 642     S390CPUModel modela, modelb;
 643
 644     /* convert both models to our internal representation */
 645     cpu_model_from_info(&modela, infoa, &err);
 646     if (err) {
 647         error_propagate(errp, err);
 648         return NULL;
 649     }
 650     cpu_model_from_info(&modelb, infob, &err);
 651     if (err) {
 652         error_propagate(errp, err);
 653         return NULL;
 654     }
 655     compare_info = g_new0(CpuModelCompareInfo, 1);
 656
 657     /* check the cpu generation and ga level */
 658     if (modela.def->gen == modelb.def->gen) {
 659         if (modela.def->ec_ga == modelb.def->ec_ga) {
 660             /* ec and corresponding bc are identical */
 661             gen_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL;
 662         } else if (modela.def->ec_ga < modelb.def->ec_ga) {
 663             gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET;
 664         } else {
 665             gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET;
 666         }
 667     } else if (modela.def->gen < modelb.def->gen) {
 668         gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET;
 669     } else {
 670         gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET;
 671     }
 672     if (gen_result != CPU_MODEL_COMPARE_RESULT_IDENTICAL) {
 673         /* both models cannot be made identical */
 674         list_add_feat("type", &compare_info->responsible_properties);
 675     }
 676
 677     /* check the feature set */
 678     if (bitmap_equal(modela.features, modelb.features, S390_FEAT_MAX)) {
 679         feat_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL;
 680     } else {
 681         bitmap_andnot(missing, modela.features, modelb.features, S390_FEAT_MAX);
 682         s390_feat_bitmap_to_ascii(missing,
 683                                   &compare_info->responsible_properties,
 684                                   list_add_feat);
 685         bitmap_andnot(added, modelb.features, modela.features, S390_FEAT_MAX);
 686         s390_feat_bitmap_to_ascii(added, &compare_info->responsible_properties,
 687                                   list_add_feat);
 688         if (bitmap_empty(missing, S390_FEAT_MAX)) {
 689             feat_result = CPU_MODEL_COMPARE_RESULT_SUBSET;
 690         } else if (bitmap_empty(added, S390_FEAT_MAX)) {
 691             feat_result = CPU_MODEL_COMPARE_RESULT_SUPERSET;
 692         } else {
 693             feat_result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE;
 694         }
 695     }
 696
 697     /* combine the results */
 698     if (gen_result == feat_result) {
 699         compare_info->result = gen_result;
 700     } else if (feat_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) {
 701         compare_info->result = gen_result;
 702     } else if (gen_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) {
 703         compare_info->result = feat_result;
 704     } else {
 705         compare_info->result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE;
 706     }
 707     return compare_info;
 708 }
 709
 710 CpuModelBaselineInfo *qmp_query_cpu_model_baseline(CpuModelInfo *infoa,
 711                                                     CpuModelInfo *infob,
 712                                                     Error **errp)
 713 {
 714     Error *err = NULL;
 715     CpuModelBaselineInfo *baseline_info;
 716     S390CPUModel modela, modelb, model;
 717     uint16_t cpu_type;
 718     uint8_t max_gen_ga;
 719     uint8_t max_gen;
 720
 721     /* convert both models to our internal representation */
 722     cpu_model_from_info(&modela, infoa, &err);
 723     if (err) {
 724         error_propagate(errp, err);
 725         return NULL;
 726     }
 727
 728     cpu_model_from_info(&modelb, infob, &err);
 729     if (err) {
 730         error_propagate(errp, err);
 731         return NULL;
 732     }
 733
 734     /* features both models support */
 735     bitmap_and(model.features, modela.features, modelb.features, S390_FEAT_MAX);
 736
 737     /* detect the maximum model not regarding features */
 738     if (modela.def->gen == modelb.def->gen) {
 739         if (modela.def->type == modelb.def->type) {
 740             cpu_type = modela.def->type;
 741         } else {
 742             cpu_type = 0;
 743         }
 744         max_gen = modela.def->gen;
 745         max_gen_ga = MIN(modela.def->ec_ga, modelb.def->ec_ga);
 746     } else if (modela.def->gen > modelb.def->gen) {
 747         cpu_type = modelb.def->type;
 748         max_gen = modelb.def->gen;
 749         max_gen_ga = modelb.def->ec_ga;
 750     } else {
 751         cpu_type = modela.def->type;
 752         max_gen = modela.def->gen;
 753         max_gen_ga = modela.def->ec_ga;
 754     }
 755
 756     model.def = s390_find_cpu_def(cpu_type, max_gen, max_gen_ga,
 757                                   model.features);
 758
 759     /* models without early base features (esan3) are bad */
 760     if (!model.def) {
 761         error_setg(errp, "No compatible CPU model could be created as"
 762                    " important base features are disabled");
 763         return NULL;
 764     }
 765
 766     /* strip off features not part of the max model */
 767     bitmap_and(model.features, model.features, model.def->full_feat,
 768                S390_FEAT_MAX);
 769
 770     baseline_info = g_new0(CpuModelBaselineInfo, 1);
 771     baseline_info->model = g_malloc0(sizeof(*baseline_info->model));
 772     cpu_info_from_model(baseline_info->model, &model, true);
 773     return baseline_info;
 774 }
 775 #endif
 776
 777 static void check_consistency(const S390CPUModel *model)
 778 {
 779     static int dep[][2] = {
 780         { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH },
 781         { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH },
 782         { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH },
 783         { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT },
 784         { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH},
 785         { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT },
 786         { S390_FEAT_DFP_FAST, S390_FEAT_DFP },
 787         { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 },
 788         { S390_FEAT_EDAT_2, S390_FEAT_EDAT},
 789         { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 },
 790         { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 },
 791         { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 },
 792         { S390_FEAT_SIE_CMMA, S390_FEAT_CMM },
 793         { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS },
 794         { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT },
 795         { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 },
 796         { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_3 },
 797         { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_4 },
 798         { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING },
 799         { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR },
 800         { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR },
 801         { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 },
 802         { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP },
 803         { S390_FEAT_CMM_NT, S390_FEAT_CMM },
 804         { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 },
 805         { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST },
 806         { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING },
 807         { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 },
 808         { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA },
 809         { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA },
 810         { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA },
 811         { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA },
 812         { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA },
 813         { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA },
 814         { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA },
 815         { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA },
 816         { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA },
 817         { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA },
 818         { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA },
 819         { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA },
 820         { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 },
 821         { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 },
 822         { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 },
 823         { S390_FEAT_AP_QUERY_CONFIG_INFO, S390_FEAT_AP },
 824         { S390_FEAT_AP_FACILITIES_TEST, S390_FEAT_AP },
 825         { S390_FEAT_PTFF_QSIE, S390_FEAT_MULTIPLE_EPOCH },
 826         { S390_FEAT_PTFF_QTOUE, S390_FEAT_MULTIPLE_EPOCH },
 827         { S390_FEAT_PTFF_STOE, S390_FEAT_MULTIPLE_EPOCH },
 828         { S390_FEAT_PTFF_STOUE, S390_FEAT_MULTIPLE_EPOCH },
 829         { S390_FEAT_AP_QUEUE_INTERRUPT_CONTROL, S390_FEAT_AP },
 830     };
 831     int i;
 832
 833     for (i = 0; i < ARRAY_SIZE(dep); i++) {
 834         if (test_bit(dep[i][0], model->features) &&
 835             !test_bit(dep[i][1], model->features)) {
 836             warn_report("\'%s\' requires \'%s\'.",
 837                         s390_feat_def(dep[i][0])->name,
 838                         s390_feat_def(dep[i][1])->name);
 839         }
 840     }
 841 }
 842
 843 static void error_prepend_missing_feat(const char *name, void *opaque)
 844 {
 845     error_prepend((Error **) opaque, "%s ", name);
 846 }
 847
 848 static void check_compatibility(const S390CPUModel *max_model,
 849                                 const S390CPUModel *model, Error **errp)
 850 {
 851     S390FeatBitmap missing;
 852
 853     if (model->def->gen > max_model->def->gen) {
 854         error_setg(errp, "Selected CPU generation is too new. Maximum "
 855                    "supported model in the configuration: \'%s\'",
 856                    max_model->def->name);
 857         return;
 858     } else if (model->def->gen == max_model->def->gen &&
 859                model->def->ec_ga > max_model->def->ec_ga) {
 860         error_setg(errp, "Selected CPU GA level is too new. Maximum "
 861                    "supported model in the configuration: \'%s\'",
 862                    max_model->def->name);
 863         return;
 864     }
 865
 866     /* detect the missing features to properly report them */
 867     bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX);
 868     if (bitmap_empty(missing, S390_FEAT_MAX)) {
 869         return;
 870     }
 871
 872     error_setg(errp, " ");
 873     s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat);
 874     error_prepend(errp, "Some features requested in the CPU model are not "
 875                   "available in the configuration: ");
 876 }
 877
 878 static S390CPUModel *get_max_cpu_model(Error **errp)
 879 {
 880     Error *err = NULL;
 881     static S390CPUModel max_model;
 882     static bool cached;
 883
 884     if (cached) {
 885         return &max_model;
 886     }
 887
 888     if (kvm_enabled()) {
 889         kvm_s390_get_host_cpu_model(&max_model, &err);
 890     } else {
 891         max_model.def = s390_find_cpu_def(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN,
 892                                           QEMU_MAX_CPU_EC_GA, NULL);
 893         bitmap_copy(max_model.features, qemu_max_cpu_feat, S390_FEAT_MAX);
 894     }
 895     if (err) {
 896         error_propagate(errp, err);
 897         return NULL;
 898     }
 899     cached = true;
 900     return &max_model;
 901 }
 902
 903 static inline void apply_cpu_model(const S390CPUModel *model, Error **errp)
 904 {
 905 #ifndef CONFIG_USER_ONLY
 906     Error *err = NULL;
 907     static S390CPUModel applied_model;
 908     static bool applied;
 909
 910     /*
 911      * We have the same model for all VCPUs. KVM can only be configured before
 912      * any VCPUs are defined in KVM.
 913      */
 914     if (applied) {
 915         if (model && memcmp(&applied_model, model, sizeof(S390CPUModel))) {
 916             error_setg(errp, "Mixed CPU models are not supported on s390x.");
 917         }
 918         return;
 919     }
 920
 921     if (kvm_enabled()) {
 922         kvm_s390_apply_cpu_model(model, &err);
 923         if (err) {
 924             error_propagate(errp, err);
 925             return;
 926         }
 927     }
 928
 929     applied = true;
 930     if (model) {
 931         applied_model = *model;
 932     }
 933 #endif
 934 }
 935
 936 void s390_realize_cpu_model(CPUState *cs, Error **errp)
 937 {
 938     Error *err = NULL;
 939     S390CPUClass *xcc = S390_CPU_GET_CLASS(cs);
 940     S390CPU *cpu = S390_CPU(cs);
 941     const S390CPUModel *max_model;
 942
 943     if (xcc->kvm_required && !kvm_enabled()) {
 944         error_setg(errp, "CPU definition requires KVM");
 945         return;
 946     }
 947
 948     if (!cpu->model) {
 949         /* no host model support -> perform compatibility stuff */
 950         apply_cpu_model(NULL, errp);
 951         return;
 952     }
 953
 954     max_model = get_max_cpu_model(errp);
 955     if (!max_model) {
 956         error_prepend(errp, "CPU models are not available: ");
 957         return;
 958     }
 959
 960     /* copy over properties that can vary */
 961     cpu->model->lowest_ibc = max_model->lowest_ibc;
 962     cpu->model->cpu_id = max_model->cpu_id;
 963     cpu->model->cpu_id_format = max_model->cpu_id_format;
 964     cpu->model->cpu_ver = max_model->cpu_ver;
 965
 966     check_consistency(cpu->model);
 967     check_compatibility(max_model, cpu->model, &err);
 968     if (err) {
 969         error_propagate(errp, err);
 970         return;
 971     }
 972
 973     apply_cpu_model(cpu->model, errp);
 974
 975 #if !defined(CONFIG_USER_ONLY)
 976     cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model);
 977     if (tcg_enabled()) {
 978         /* basic mode, write the cpu address into the first 4 bit of the ID */
 979         cpu->env.cpuid = deposit64(cpu->env.cpuid, 54, 4, cpu->env.core_id);
 980     }
 981 #endif
 982 }
 983
 984 static void get_feature(Object *obj, Visitor *v, const char *name,
 985                         void *opaque, Error **errp)
 986 {
 987     S390Feat feat = (S390Feat) opaque;
 988     S390CPU *cpu = S390_CPU(obj);
 989     bool value;
 990
 991     if (!cpu->model) {
 992         error_setg(errp, "Details about the host CPU model are not available, "
 993                          "features cannot be queried.");
 994         return;
 995     }
 996
 997     value = test_bit(feat, cpu->model->features);
 998     visit_type_bool(v, name, &value, errp);
 999 }
1000
1001 static void set_feature(Object *obj, Visitor *v, const char *name,
1002                         void *opaque, Error **errp)
1003 {
1004     Error *err = NULL;
1005     S390Feat feat = (S390Feat) opaque;
1006     DeviceState *dev = DEVICE(obj);
1007     S390CPU *cpu = S390_CPU(obj);
1008     bool value;
1009
1010     if (dev->realized) {
1011         error_setg(errp, "Attempt to set property '%s' on '%s' after "
1012                    "it was realized", name, object_get_typename(obj));
1013         return;
1014     } else if (!cpu->model) {
1015         error_setg(errp, "Details about the host CPU model are not available, "
1016                          "features cannot be changed.");
1017         return;
1018     }
1019
1020     visit_type_bool(v, name, &value, &err);
1021     if (err) {
1022         error_propagate(errp, err);
1023         return;
1024     }
1025     if (value) {
1026         if (!test_bit(feat, cpu->model->def->full_feat)) {
1027             error_setg(errp, "Feature '%s' is not available for CPU model '%s',"
1028                        " it was introduced with later models.",
1029                        name, cpu->model->def->name);
1030             return;
1031         }
1032         set_bit(feat, cpu->model->features);
1033     } else {
1034         clear_bit(feat, cpu->model->features);
1035     }
1036 }
1037
1038 static void get_feature_group(Object *obj, Visitor *v, const char *name,
1039                               void *opaque, Error **errp)
1040 {
1041     S390FeatGroup group = (S390FeatGroup) opaque;
1042     const S390FeatGroupDef *def = s390_feat_group_def(group);
1043     S390CPU *cpu = S390_CPU(obj);
1044     S390FeatBitmap tmp;
1045     bool value;
1046
1047     if (!cpu->model) {
1048         error_setg(errp, "Details about the host CPU model are not available, "
1049                          "features cannot be queried.");
1050         return;
1051     }
1052
1053     /* a group is enabled if all features are enabled */
1054     bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX);
1055     value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX);
1056     visit_type_bool(v, name, &value, errp);
1057 }
1058
1059 static void set_feature_group(Object *obj, Visitor *v, const char *name,
1060                               void *opaque, Error **errp)
1061 {
1062     Error *err = NULL;
1063     S390FeatGroup group = (S390FeatGroup) opaque;
1064     const S390FeatGroupDef *def = s390_feat_group_def(group);
1065     DeviceState *dev = DEVICE(obj);
1066     S390CPU *cpu = S390_CPU(obj);
1067     bool value;
1068
1069     if (dev->realized) {
1070         error_setg(errp, "Attempt to set property '%s' on '%s' after "
1071                    "it was realized", name, object_get_typename(obj));
1072         return;
1073     } else if (!cpu->model) {
1074         error_setg(errp, "Details about the host CPU model are not available, "
1075                          "features cannot be changed.");
1076         return;
1077     }
1078
1079     visit_type_bool(v, name, &value, &err);
1080     if (err) {
1081         error_propagate(errp, err);
1082         return;
1083     }
1084     if (value) {
1085         /* groups are added in one shot, so an intersect is sufficient */
1086         if (!bitmap_intersects(def->feat, cpu->model->def->full_feat,
1087                                S390_FEAT_MAX)) {
1088             error_setg(errp, "Group '%s' is not available for CPU model '%s',"
1089                        " it was introduced with later models.",
1090                        name, cpu->model->def->name);
1091             return;
1092         }
1093         bitmap_or(cpu->model->features, cpu->model->features, def->feat,
1094                   S390_FEAT_MAX);
1095     } else {
1096         bitmap_andnot(cpu->model->features, cpu->model->features, def->feat,
1097                       S390_FEAT_MAX);
1098     }
1099 }
1100
1101 void s390_cpu_model_register_props(Object *obj)
1102 {
1103     S390FeatGroup group;
1104     S390Feat feat;
1105
1106     for (feat = 0; feat < S390_FEAT_MAX; feat++) {
1107         const S390FeatDef *def = s390_feat_def(feat);
1108         object_property_add(obj, def->name, "bool", get_feature,
1109                             set_feature, NULL, (void *) feat, NULL);
1110         object_property_set_description(obj, def->name, def->desc , NULL);
1111     }
1112     for (group = 0; group < S390_FEAT_GROUP_MAX; group++) {
1113         const S390FeatGroupDef *def = s390_feat_group_def(group);
1114         object_property_add(obj, def->name, "bool", get_feature_group,
1115                             set_feature_group, NULL, (void *) group, NULL);
1116         object_property_set_description(obj, def->name, def->desc , NULL);
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     object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe,
1228                                    NULL, NULL);
1229     object_class_property_add_bool(oc, "static", get_is_static,
1230                                    NULL, NULL);
1231     object_class_property_add_str(oc, "description", get_description, NULL,
1232                                   NULL);
1233 }
1234
1235 #ifdef CONFIG_KVM
1236 static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data)
1237 {
1238     S390CPUClass *xcc = S390_CPU_CLASS(oc);
1239
1240     xcc->kvm_required = true;
1241     xcc->desc = "KVM only: All recognized features";
1242 }
1243 #endif
1244
1245 static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data)
1246 {
1247     S390CPUClass *xcc = S390_CPU_CLASS(oc);
1248
1249     /* all base models are migration safe */
1250     xcc->cpu_def = (const S390CPUDef *) data;
1251     xcc->is_migration_safe = true;
1252     xcc->is_static = true;
1253     xcc->desc = xcc->cpu_def->desc;
1254 }
1255
1256 static void s390_cpu_model_class_init(ObjectClass *oc, void *data)
1257 {
1258     S390CPUClass *xcc = S390_CPU_CLASS(oc);
1259
1260     /* model that can change between QEMU versions */
1261     xcc->cpu_def = (const S390CPUDef *) data;
1262     xcc->is_migration_safe = true;
1263     xcc->desc = xcc->cpu_def->desc;
1264 }
1265
1266 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data)
1267 {
1268     S390CPUClass *xcc = S390_CPU_CLASS(oc);
1269
1270     xcc->is_migration_safe = true;
1271     xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s",
1272                                 qemu_hw_version());
1273 }
1274
1275 static void s390_max_cpu_model_class_init(ObjectClass *oc, void *data)
1276 {
1277     S390CPUClass *xcc = S390_CPU_CLASS(oc);
1278
1279     /*
1280      * The "max" model is neither static nor migration safe. Under KVM
1281      * it represents the "host" model. Under TCG it represents some kind of
1282      * "qemu" CPU model without compat handling and maybe with some additional
1283      * CPU features that are not yet unlocked in the "qemu" model.
1284      */
1285     xcc->desc =
1286         "Enables all features supported by the accelerator in the current host";
1287 }
1288
1289 /* Generate type name for a cpu model. Caller has to free the string. */
1290 static char *s390_cpu_type_name(const char *model_name)
1291 {
1292     return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name);
1293 }
1294
1295 /* Generate type name for a base cpu model. Caller has to free the string. */
1296 static char *s390_base_cpu_type_name(const char *model_name)
1297 {
1298     return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name);
1299 }
1300
1301 ObjectClass *s390_cpu_class_by_name(const char *name)
1302 {
1303     char *typename = s390_cpu_type_name(name);
1304     ObjectClass *oc;
1305
1306     oc = object_class_by_name(typename);
1307     g_free(typename);
1308     return oc;
1309 }
1310
1311 static const TypeInfo qemu_s390_cpu_type_info = {
1312     .name = S390_CPU_TYPE_NAME("qemu"),
1313     .parent = TYPE_S390_CPU,
1314     .instance_init = s390_qemu_cpu_model_initfn,
1315     .instance_finalize = s390_cpu_model_finalize,
1316     .class_init = s390_qemu_cpu_model_class_init,
1317 };
1318
1319 static const TypeInfo max_s390_cpu_type_info = {
1320     .name = S390_CPU_TYPE_NAME("max"),
1321     .parent = TYPE_S390_CPU,
1322     .instance_init = s390_max_cpu_model_initfn,
1323     .instance_finalize = s390_cpu_model_finalize,
1324     .class_init = s390_max_cpu_model_class_init,
1325 };
1326
1327 #ifdef CONFIG_KVM
1328 static const TypeInfo host_s390_cpu_type_info = {
1329     .name = S390_CPU_TYPE_NAME("host"),
1330     .parent = S390_CPU_TYPE_NAME("max"),
1331     .class_init = s390_host_cpu_model_class_init,
1332 };
1333 #endif
1334
1335 static void init_ignored_base_feat(void)
1336 {
1337     static const int feats[] = {
1338          /* MSA subfunctions that could not be available on certain machines */
1339          S390_FEAT_KMAC_DEA,
1340          S390_FEAT_KMAC_TDEA_128,
1341          S390_FEAT_KMAC_TDEA_192,
1342          S390_FEAT_KMC_DEA,
1343          S390_FEAT_KMC_TDEA_128,
1344          S390_FEAT_KMC_TDEA_192,
1345          S390_FEAT_KM_DEA,
1346          S390_FEAT_KM_TDEA_128,
1347          S390_FEAT_KM_TDEA_192,
1348          S390_FEAT_KIMD_SHA_1,
1349          S390_FEAT_KLMD_SHA_1,
1350          /* CSSKE is deprecated on newer generations */
1351          S390_FEAT_CONDITIONAL_SSKE,
1352     };
1353     int i;
1354
1355     for (i = 0; i < ARRAY_SIZE(feats); i++) {
1356         set_bit(feats[i], ignored_base_feat);
1357     }
1358 }
1359
1360 static void register_types(void)
1361 {
1362     static const S390FeatInit qemu_latest_init = { S390_FEAT_LIST_QEMU_LATEST };
1363     int i;
1364
1365     init_ignored_base_feat();
1366
1367     /* init all bitmaps from gnerated data initially */
1368     s390_init_feat_bitmap(qemu_max_cpu_feat_init, qemu_max_cpu_feat);
1369     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
1370         s390_init_feat_bitmap(s390_cpu_defs[i].base_init,
1371                               s390_cpu_defs[i].base_feat);
1372         s390_init_feat_bitmap(s390_cpu_defs[i].default_init,
1373                               s390_cpu_defs[i].default_feat);
1374         s390_init_feat_bitmap(s390_cpu_defs[i].full_init,
1375                               s390_cpu_defs[i].full_feat);
1376     }
1377
1378     /* initialize the qemu model with latest definition */
1379     s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN,
1380                             QEMU_MAX_CPU_EC_GA, qemu_latest_init);
1381
1382     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
1383         char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name);
1384         TypeInfo ti_base = {
1385             .name = base_name,
1386             .parent = TYPE_S390_CPU,
1387             .instance_init = s390_cpu_model_initfn,
1388             .instance_finalize = s390_cpu_model_finalize,
1389             .class_init = s390_base_cpu_model_class_init,
1390             .class_data = (void *) &s390_cpu_defs[i],
1391         };
1392         char *name = s390_cpu_type_name(s390_cpu_defs[i].name);
1393         TypeInfo ti = {
1394             .name = name,
1395             .parent = TYPE_S390_CPU,
1396             .instance_init = s390_cpu_model_initfn,
1397             .instance_finalize = s390_cpu_model_finalize,
1398             .class_init = s390_cpu_model_class_init,
1399             .class_data = (void *) &s390_cpu_defs[i],
1400         };
1401
1402         type_register_static(&ti_base);
1403         type_register_static(&ti);
1404         g_free(base_name);
1405         g_free(name);
1406     }
1407
1408     type_register_static(&qemu_s390_cpu_type_info);
1409     type_register_static(&max_s390_cpu_type_info);
1410 #ifdef CONFIG_KVM
1411     type_register_static(&host_s390_cpu_type_info);
1412 #endif
1413 }
1414
1415 type_init(register_types)