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 "qapi/error.h"
  19 #include "qapi/visitor.h"
  20 #include "qemu/error-report.h"
  21 #include "qapi/qmp/qerror.h"
  22 #include "qapi/qobject-input-visitor.h"
  23 #include "qapi/qmp/qdict.h"
  24 #ifndef CONFIG_USER_ONLY
  25 #include "sysemu/arch_init.h"
  26 #include "hw/pci/pci.h"
  27 #endif
  28
  29 #define CPUDEF_INIT(_type, _gen, _ec_ga, _mha_pow, _hmfai, _name, _desc) \
  30     {                                                                    \
  31         .name = _name,                                                   \
  32         .type = _type,                                                   \
  33         .gen = _gen,                                                     \
  34         .ec_ga = _ec_ga,                                                 \
  35         .mha_pow = _mha_pow,                                             \
  36         .hmfai = _hmfai,                                                 \
  37         .desc = _desc,                                                   \
  38         .base_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _BASE },  \
  39         .default_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _DEFAULT },  \
  40         .full_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _FULL },  \
  41     }
  42
  43 /*
  44  * CPU definiton list in order of release. For now, base features of a
  45  * following release are always a subset of base features of the previous
  46  * release. Same is correct for the other feature sets.
  47  * A BC release always follows the corresponding EC release.
  48  */
  49 static S390CPUDef s390_cpu_defs[] = {
  50     CPUDEF_INIT(0x2064, 7, 1, 38, 0x00000000U, "z900", "IBM zSeries 900 GA1"),
  51     CPUDEF_INIT(0x2064, 7, 2, 38, 0x00000000U, "z900.2", "IBM zSeries 900 GA2"),
  52     CPUDEF_INIT(0x2064, 7, 3, 38, 0x00000000U, "z900.3", "IBM zSeries 900 GA3"),
  53     CPUDEF_INIT(0x2066, 7, 3, 38, 0x00000000U, "z800", "IBM zSeries 800 GA1"),
  54     CPUDEF_INIT(0x2084, 8, 1, 38, 0x00000000U, "z990", "IBM zSeries 990 GA1"),
  55     CPUDEF_INIT(0x2084, 8, 2, 38, 0x00000000U, "z990.2", "IBM zSeries 990 GA2"),
  56     CPUDEF_INIT(0x2084, 8, 3, 38, 0x00000000U, "z990.3", "IBM zSeries 990 GA3"),
  57     CPUDEF_INIT(0x2086, 8, 3, 38, 0x00000000U, "z890", "IBM zSeries 880 GA1"),
  58     CPUDEF_INIT(0x2084, 8, 4, 38, 0x00000000U, "z990.4", "IBM zSeries 990 GA4"),
  59     CPUDEF_INIT(0x2086, 8, 4, 38, 0x00000000U, "z890.2", "IBM zSeries 880 GA2"),
  60     CPUDEF_INIT(0x2084, 8, 5, 38, 0x00000000U, "z990.5", "IBM zSeries 990 GA5"),
  61     CPUDEF_INIT(0x2086, 8, 5, 38, 0x00000000U, "z890.3", "IBM zSeries 880 GA3"),
  62     CPUDEF_INIT(0x2094, 9, 1, 40, 0x00000000U, "z9EC", "IBM System z9 EC GA1"),
  63     CPUDEF_INIT(0x2094, 9, 2, 40, 0x00000000U, "z9EC.2", "IBM System z9 EC GA2"),
  64     CPUDEF_INIT(0x2096, 9, 2, 40, 0x00000000U, "z9BC", "IBM System z9 BC GA1"),
  65     CPUDEF_INIT(0x2094, 9, 3, 40, 0x00000000U, "z9EC.3", "IBM System z9 EC GA3"),
  66     CPUDEF_INIT(0x2096, 9, 3, 40, 0x00000000U, "z9BC.2", "IBM System z9 BC GA2"),
  67     CPUDEF_INIT(0x2097, 10, 1, 43, 0x00000000U, "z10EC", "IBM System z10 EC GA1"),
  68     CPUDEF_INIT(0x2097, 10, 2, 43, 0x00000000U, "z10EC.2", "IBM System z10 EC GA2"),
  69     CPUDEF_INIT(0x2098, 10, 2, 43, 0x00000000U, "z10BC", "IBM System z10 BC GA1"),
  70     CPUDEF_INIT(0x2097, 10, 3, 43, 0x00000000U, "z10EC.3", "IBM System z10 EC GA3"),
  71     CPUDEF_INIT(0x2098, 10, 3, 43, 0x00000000U, "z10BC.2", "IBM System z10 BC GA2"),
  72     CPUDEF_INIT(0x2817, 11, 1, 44, 0x08000000U, "z196", "IBM zEnterprise 196 GA1"),
  73     CPUDEF_INIT(0x2817, 11, 2, 44, 0x08000000U, "z196.2", "IBM zEnterprise 196 GA2"),
  74     CPUDEF_INIT(0x2818, 11, 2, 44, 0x08000000U, "z114", "IBM zEnterprise 114 GA1"),
  75     CPUDEF_INIT(0x2827, 12, 1, 44, 0x08000000U, "zEC12", "IBM zEnterprise EC12 GA1"),
  76     CPUDEF_INIT(0x2827, 12, 2, 44, 0x08000000U, "zEC12.2", "IBM zEnterprise EC12 GA2"),
  77     CPUDEF_INIT(0x2828, 12, 2, 44, 0x08000000U, "zBC12", "IBM zEnterprise BC12 GA1"),
  78     CPUDEF_INIT(0x2964, 13, 1, 47, 0x08000000U, "z13", "IBM z13 GA1"),
  79     CPUDEF_INIT(0x2964, 13, 2, 47, 0x08000000U, "z13.2", "IBM z13 GA2"),
  80     CPUDEF_INIT(0x2965, 13, 2, 47, 0x08000000U, "z13s", "IBM z13s GA1"),
  81     CPUDEF_INIT(0x3906, 14, 1, 47, 0x08000000U, "z14", "IBM z14 GA1"),
  82 };
  83
  84 #define QEMU_MAX_CPU_TYPE 0x2827
  85 #define QEMU_MAX_CPU_GEN 12
  86 #define QEMU_MAX_CPU_EC_GA 2
  87 static const S390FeatInit qemu_max_cpu_feat_init = { S390_FEAT_LIST_QEMU_MAX };
  88 static S390FeatBitmap qemu_max_cpu_feat;
  89
  90 /* features part of a base model but not relevant for finding a base model */
  91 S390FeatBitmap ignored_base_feat;
  92
  93 void s390_cpudef_featoff(uint8_t gen, uint8_t ec_ga, S390Feat feat)
  94 {
  95     const S390CPUDef *def;
  96
  97     def = s390_find_cpu_def(0, gen, ec_ga, NULL);
  98     clear_bit(feat, (unsigned long *)&def->default_feat);
  99 }
 100
 101 void s390_cpudef_featoff_greater(uint8_t gen, uint8_t ec_ga, S390Feat feat)
 102 {
 103     int i;
 104
 105     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
 106         const S390CPUDef *def = &s390_cpu_defs[i];
 107
 108         if (def->gen < gen) {
 109             continue;
 110         }
 111         if (def->gen == gen && def->ec_ga < ec_ga) {
 112             continue;
 113         }
 114
 115         clear_bit(feat, (unsigned long *)&def->default_feat);
 116     }
 117 }
 118
 119 uint32_t s390_get_hmfai(void)
 120 {
 121     static S390CPU *cpu;
 122
 123     if (!cpu) {
 124         cpu = S390_CPU(qemu_get_cpu(0));
 125     }
 126
 127     if (!cpu || !cpu->model) {
 128         return 0;
 129     }
 130     return cpu->model->def->hmfai;
 131 }
 132
 133 uint8_t s390_get_mha_pow(void)
 134 {
 135     static S390CPU *cpu;
 136
 137     if (!cpu) {
 138         cpu = S390_CPU(qemu_get_cpu(0));
 139     }
 140
 141     if (!cpu || !cpu->model) {
 142         return 0;
 143     }
 144     return cpu->model->def->mha_pow;
 145 }
 146
 147 uint32_t s390_get_ibc_val(void)
 148 {
 149     uint16_t unblocked_ibc, lowest_ibc;
 150     static S390CPU *cpu;
 151
 152     if (!cpu) {
 153         cpu = S390_CPU(qemu_get_cpu(0));
 154     }
 155
 156     if (!cpu || !cpu->model) {
 157         return 0;
 158     }
 159     unblocked_ibc = s390_ibc_from_cpu_model(cpu->model);
 160     lowest_ibc = cpu->model->lowest_ibc;
 161     /* the lowest_ibc always has to be <= unblocked_ibc */
 162     if (!lowest_ibc || lowest_ibc > unblocked_ibc) {
 163         return 0;
 164     }
 165     return ((uint32_t) lowest_ibc << 16) | unblocked_ibc;
 166 }
 167
 168 void s390_get_feat_block(S390FeatType type, uint8_t *data)
 169 {
 170     static S390CPU *cpu;
 171
 172     if (!cpu) {
 173         cpu = S390_CPU(qemu_get_cpu(0));
 174     }
 175
 176     if (!cpu || !cpu->model) {
 177         return;
 178     }
 179     s390_fill_feat_block(cpu->model->features, type, data);
 180 }
 181
 182 bool s390_has_feat(S390Feat feat)
 183 {
 184     static S390CPU *cpu;
 185
 186     if (!cpu) {
 187         cpu = S390_CPU(qemu_get_cpu(0));
 188     }
 189
 190     if (!cpu || !cpu->model) {
 191 #ifdef CONFIG_KVM
 192         if (kvm_enabled()) {
 193             if (feat == S390_FEAT_VECTOR) {
 194                 return kvm_check_extension(kvm_state,
 195                                            KVM_CAP_S390_VECTOR_REGISTERS);
 196             }
 197             if (feat == S390_FEAT_RUNTIME_INSTRUMENTATION) {
 198                 return kvm_s390_get_ri();
 199             }
 200             if (feat == S390_FEAT_MSA_EXT_3) {
 201                 return true;
 202             }
 203         }
 204 #endif
 205         if (feat == S390_FEAT_ZPCI) {
 206             return true;
 207         }
 208         return 0;
 209     }
 210     return test_bit(feat, cpu->model->features);
 211 }
 212
 213 uint8_t s390_get_gen_for_cpu_type(uint16_t type)
 214 {
 215     int i;
 216
 217     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
 218         if (s390_cpu_defs[i].type == type) {
 219             return s390_cpu_defs[i].gen;
 220         }
 221     }
 222     return 0;
 223 }
 224
 225 const S390CPUDef *s390_find_cpu_def(uint16_t type, uint8_t gen, uint8_t ec_ga,
 226                                     S390FeatBitmap features)
 227 {
 228     const S390CPUDef *last_compatible = NULL;
 229     const S390CPUDef *matching_cpu_type = NULL;
 230     int i;
 231
 232     if (!gen) {
 233         ec_ga = 0;
 234     }
 235     if (!gen && type) {
 236         gen = s390_get_gen_for_cpu_type(type);
 237     }
 238
 239     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
 240         const S390CPUDef *def = &s390_cpu_defs[i];
 241         S390FeatBitmap missing;
 242
 243         /* don't even try newer generations if we know the generation */
 244         if (gen) {
 245             if (def->gen > gen) {
 246                 break;
 247             } else if (def->gen == gen && ec_ga && def->ec_ga > ec_ga) {
 248                 break;
 249             }
 250         }
 251
 252         if (features) {
 253             /* see if the model satisfies the minimum features */
 254             bitmap_andnot(missing, def->base_feat, features, S390_FEAT_MAX);
 255             /*
 256              * Ignore certain features that are in the base model, but not
 257              * relevant for the search (esp. MSA subfunctions).
 258              */
 259             bitmap_andnot(missing, missing, ignored_base_feat, S390_FEAT_MAX);
 260             if (!bitmap_empty(missing, S390_FEAT_MAX)) {
 261                 break;
 262             }
 263         }
 264
 265         /* stop the search if we found the exact model */
 266         if (def->type == type && def->ec_ga == ec_ga) {
 267             return def;
 268         }
 269         /* remember if we've at least seen one with the same cpu type */
 270         if (def->type == type) {
 271             matching_cpu_type = def;
 272         }
 273         last_compatible = def;
 274     }
 275     /* prefer the model with the same cpu type, esp. don't take the BC for EC */
 276     if (matching_cpu_type) {
 277         return matching_cpu_type;
 278     }
 279     return last_compatible;
 280 }
 281
 282 static void s390_print_cpu_model_list_entry(gpointer data, gpointer user_data)
 283 {
 284     CPUListState *s = user_data;
 285     const S390CPUClass *scc = S390_CPU_CLASS((ObjectClass *)data);
 286     char *name = g_strdup(object_class_get_name((ObjectClass *)data));
 287     const char *details = "";
 288
 289     if (scc->is_static) {
 290         details = "(static, migration-safe)";
 291     } else if (scc->is_migration_safe) {
 292         details = "(migration-safe)";
 293     }
 294
 295     /* strip off the -s390x-cpu */
 296     g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0;
 297     (*s->cpu_fprintf)(s->file, "s390 %-15s %-35s %s\n", name, scc->desc,
 298                       details);
 299     g_free(name);
 300 }
 301
 302 static gint s390_cpu_list_compare(gconstpointer a, gconstpointer b)
 303 {
 304     const S390CPUClass *cc_a = S390_CPU_CLASS((ObjectClass *)a);
 305     const S390CPUClass *cc_b = S390_CPU_CLASS((ObjectClass *)b);
 306     const char *name_a = object_class_get_name((ObjectClass *)a);
 307     const char *name_b = object_class_get_name((ObjectClass *)b);
 308
 309     /* move qemu and host to the top of the list, qemu first, host second */
 310     if (name_a[0] == 'q') {
 311         return -1;
 312     } else if (name_b[0] == 'q') {
 313         return 1;
 314     } else if (name_a[0] == 'h') {
 315         return -1;
 316     } else if (name_b[0] == 'h') {
 317         return 1;
 318     }
 319
 320     /* keep the same order we have in our table (sorted by release date) */
 321     if (cc_a->cpu_def != cc_b->cpu_def) {
 322         return cc_a->cpu_def - cc_b->cpu_def;
 323     }
 324
 325     /* exact same definition - list base model first */
 326     return cc_a->is_static ? -1 : 1;
 327 }
 328
 329 void s390_cpu_list(FILE *f, fprintf_function print)
 330 {
 331     CPUListState s = {
 332         .file = f,
 333         .cpu_fprintf = print,
 334     };
 335     S390FeatGroup group;
 336     S390Feat feat;
 337     GSList *list;
 338
 339     list = object_class_get_list(TYPE_S390_CPU, false);
 340     list = g_slist_sort(list, s390_cpu_list_compare);
 341     g_slist_foreach(list, s390_print_cpu_model_list_entry, &s);
 342     g_slist_free(list);
 343
 344     (*print)(f, "\nRecognized feature flags:\n");
 345     for (feat = 0; feat < S390_FEAT_MAX; feat++) {
 346         const S390FeatDef *def = s390_feat_def(feat);
 347
 348         (*print)(f, "%-20s %-50s\n", def->name, def->desc);
 349     }
 350
 351     (*print)(f, "\nRecognized feature groups:\n");
 352     for (group = 0; group < S390_FEAT_GROUP_MAX; group++) {
 353         const S390FeatGroupDef *def = s390_feat_group_def(group);
 354
 355         (*print)(f, "%-20s %-50s\n", def->name, def->desc);
 356     }
 357 }
 358
 359 static S390CPUModel *get_max_cpu_model(Error **errp);
 360
 361 #ifndef CONFIG_USER_ONLY
 362 static void list_add_feat(const char *name, void *opaque);
 363
 364 static void check_unavailable_features(const S390CPUModel *max_model,
 365                                        const S390CPUModel *model,
 366                                        strList **unavailable)
 367 {
 368     S390FeatBitmap missing;
 369
 370     /* check general model compatibility */
 371     if (max_model->def->gen < model->def->gen ||
 372         (max_model->def->gen == model->def->gen &&
 373          max_model->def->ec_ga < model->def->ec_ga)) {
 374         list_add_feat("type", unavailable);
 375     }
 376
 377     /* detect missing features if any to properly report them */
 378     bitmap_andnot(missing, model->features, max_model->features,
 379                   S390_FEAT_MAX);
 380     if (!bitmap_empty(missing, S390_FEAT_MAX)) {
 381         s390_feat_bitmap_to_ascii(missing, unavailable, list_add_feat);
 382     }
 383 }
 384
 385 struct CpuDefinitionInfoListData {
 386     CpuDefinitionInfoList *list;
 387     S390CPUModel *model;
 388 };
 389
 390 static void create_cpu_model_list(ObjectClass *klass, void *opaque)
 391 {
 392     struct CpuDefinitionInfoListData *cpu_list_data = opaque;
 393     CpuDefinitionInfoList **cpu_list = &cpu_list_data->list;
 394     CpuDefinitionInfoList *entry;
 395     CpuDefinitionInfo *info;
 396     char *name = g_strdup(object_class_get_name(klass));
 397     S390CPUClass *scc = S390_CPU_CLASS(klass);
 398
 399     /* strip off the -s390x-cpu */
 400     g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0;
 401     info = g_new0(CpuDefinitionInfo, 1);
 402     info->name = name;
 403     info->has_migration_safe = true;
 404     info->migration_safe = scc->is_migration_safe;
 405     info->q_static = scc->is_static;
 406     info->q_typename = g_strdup(object_class_get_name(klass));
 407     /* check for unavailable features */
 408     if (cpu_list_data->model) {
 409         Object *obj;
 410         S390CPU *sc;
 411         obj = object_new(object_class_get_name(klass));
 412         sc = S390_CPU(obj);
 413         if (sc->model) {
 414             info->has_unavailable_features = true;
 415             check_unavailable_features(cpu_list_data->model, sc->model,
 416                                        &info->unavailable_features);
 417         }
 418         object_unref(obj);
 419     }
 420
 421     entry = g_new0(CpuDefinitionInfoList, 1);
 422     entry->value = info;
 423     entry->next = *cpu_list;
 424     *cpu_list = entry;
 425 }
 426
 427 CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp)
 428 {
 429     struct CpuDefinitionInfoListData list_data = {
 430         .list = NULL,
 431     };
 432
 433     list_data.model = get_max_cpu_model(errp);
 434     if (*errp) {
 435         error_free(*errp);
 436         *errp = NULL;
 437     }
 438
 439     object_class_foreach(create_cpu_model_list, TYPE_S390_CPU, false,
 440                          &list_data);
 441
 442     return list_data.list;
 443 }
 444
 445 static void cpu_model_from_info(S390CPUModel *model, const CpuModelInfo *info,
 446                                 Error **errp)
 447 {
 448     const QDict *qdict = NULL;
 449     const QDictEntry *e;
 450     Visitor *visitor;
 451     ObjectClass *oc;
 452     S390CPU *cpu;
 453     Object *obj;
 454
 455     if (info->props) {
 456         qdict = qobject_to_qdict(info->props);
 457         if (!qdict) {
 458             error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict");
 459             return;
 460         }
 461     }
 462
 463     oc = cpu_class_by_name(TYPE_S390_CPU, info->name);
 464     if (!oc) {
 465         error_setg(errp, "The CPU definition \'%s\' is unknown.", info->name);
 466         return;
 467     }
 468     if (S390_CPU_CLASS(oc)->kvm_required && !kvm_enabled()) {
 469         error_setg(errp, "The CPU definition '%s' requires KVM", info->name);
 470         return;
 471     }
 472     obj = object_new(object_class_get_name(oc));
 473     cpu = S390_CPU(obj);
 474
 475     if (!cpu->model) {
 476         error_setg(errp, "Details about the host CPU model are not available, "
 477                          "it cannot be used.");
 478         object_unref(obj);
 479         return;
 480     }
 481
 482     if (qdict) {
 483         visitor = qobject_input_visitor_new(info->props);
 484         visit_start_struct(visitor, NULL, NULL, 0, errp);
 485         if (*errp) {
 486             object_unref(obj);
 487             return;
 488         }
 489         for (e = qdict_first(qdict); e; e = qdict_next(qdict, e)) {
 490             object_property_set(obj, visitor, e->key, errp);
 491             if (*errp) {
 492                 break;
 493             }
 494         }
 495         if (!*errp) {
 496             visit_check_struct(visitor, errp);
 497         }
 498         visit_end_struct(visitor, NULL);
 499         visit_free(visitor);
 500         if (*errp) {
 501             object_unref(obj);
 502             return;
 503         }
 504     }
 505
 506     /* copy the model and throw the cpu away */
 507     memcpy(model, cpu->model, sizeof(*model));
 508     object_unref(obj);
 509 }
 510
 511 static void qdict_add_disabled_feat(const char *name, void *opaque)
 512 {
 513     qdict_put_bool(opaque, name, false);
 514 }
 515
 516 static void qdict_add_enabled_feat(const char *name, void *opaque)
 517 {
 518     qdict_put_bool(opaque, name, true);
 519 }
 520
 521 /* convert S390CPUDef into a static CpuModelInfo */
 522 static void cpu_info_from_model(CpuModelInfo *info, const S390CPUModel *model,
 523                                 bool delta_changes)
 524 {
 525     QDict *qdict = qdict_new();
 526     S390FeatBitmap bitmap;
 527
 528     /* always fallback to the static base model */
 529     info->name = g_strdup_printf("%s-base", model->def->name);
 530
 531     if (delta_changes) {
 532         /* features deleted from the base feature set */
 533         bitmap_andnot(bitmap, model->def->base_feat, model->features,
 534                       S390_FEAT_MAX);
 535         if (!bitmap_empty(bitmap, S390_FEAT_MAX)) {
 536             s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat);
 537         }
 538
 539         /* features added to the base feature set */
 540         bitmap_andnot(bitmap, model->features, model->def->base_feat,
 541                       S390_FEAT_MAX);
 542         if (!bitmap_empty(bitmap, S390_FEAT_MAX)) {
 543             s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_enabled_feat);
 544         }
 545     } else {
 546         /* expand all features */
 547         s390_feat_bitmap_to_ascii(model->features, qdict,
 548                                   qdict_add_enabled_feat);
 549         bitmap_complement(bitmap, model->features, S390_FEAT_MAX);
 550         s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat);
 551     }
 552
 553     if (!qdict_size(qdict)) {
 554         QDECREF(qdict);
 555     } else {
 556         info->props = QOBJECT(qdict);
 557         info->has_props = true;
 558     }
 559 }
 560
 561 CpuModelExpansionInfo *arch_query_cpu_model_expansion(CpuModelExpansionType type,
 562                                                       CpuModelInfo *model,
 563                                                       Error **errp)
 564 {
 565     CpuModelExpansionInfo *expansion_info = NULL;
 566     S390CPUModel s390_model;
 567     bool delta_changes = false;
 568
 569     /* convert it to our internal representation */
 570     cpu_model_from_info(&s390_model, model, errp);
 571     if (*errp) {
 572         return NULL;
 573     }
 574
 575     if (type == CPU_MODEL_EXPANSION_TYPE_STATIC) {
 576         delta_changes = true;
 577     } else if (type != CPU_MODEL_EXPANSION_TYPE_FULL) {
 578         error_setg(errp, "The requested expansion type is not supported.");
 579         return NULL;
 580     }
 581
 582     /* convert it back to a static representation */
 583     expansion_info = g_new0(CpuModelExpansionInfo, 1);
 584     expansion_info->model = g_malloc0(sizeof(*expansion_info->model));
 585     cpu_info_from_model(expansion_info->model, &s390_model, delta_changes);
 586     return expansion_info;
 587 }
 588
 589 static void list_add_feat(const char *name, void *opaque)
 590 {
 591     strList **last = (strList **) opaque;
 592     strList *entry;
 593
 594     entry = g_new0(strList, 1);
 595     entry->value = g_strdup(name);
 596     entry->next = *last;
 597     *last = entry;
 598 }
 599
 600 CpuModelCompareInfo *arch_query_cpu_model_comparison(CpuModelInfo *infoa,
 601                                                      CpuModelInfo *infob,
 602                                                      Error **errp)
 603 {
 604     CpuModelCompareResult feat_result, gen_result;
 605     CpuModelCompareInfo *compare_info;
 606     S390FeatBitmap missing, added;
 607     S390CPUModel modela, modelb;
 608
 609     /* convert both models to our internal representation */
 610     cpu_model_from_info(&modela, infoa, errp);
 611     if (*errp) {
 612         return NULL;
 613     }
 614     cpu_model_from_info(&modelb, infob, errp);
 615     if (*errp) {
 616         return NULL;
 617     }
 618     compare_info = g_new0(CpuModelCompareInfo, 1);
 619
 620     /* check the cpu generation and ga level */
 621     if (modela.def->gen == modelb.def->gen) {
 622         if (modela.def->ec_ga == modelb.def->ec_ga) {
 623             /* ec and corresponding bc are identical */
 624             gen_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL;
 625         } else if (modela.def->ec_ga < modelb.def->ec_ga) {
 626             gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET;
 627         } else {
 628             gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET;
 629         }
 630     } else if (modela.def->gen < modelb.def->gen) {
 631         gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET;
 632     } else {
 633         gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET;
 634     }
 635     if (gen_result != CPU_MODEL_COMPARE_RESULT_IDENTICAL) {
 636         /* both models cannot be made identical */
 637         list_add_feat("type", &compare_info->responsible_properties);
 638     }
 639
 640     /* check the feature set */
 641     if (bitmap_equal(modela.features, modelb.features, S390_FEAT_MAX)) {
 642         feat_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL;
 643     } else {
 644         bitmap_andnot(missing, modela.features, modelb.features, S390_FEAT_MAX);
 645         s390_feat_bitmap_to_ascii(missing,
 646                                   &compare_info->responsible_properties,
 647                                   list_add_feat);
 648         bitmap_andnot(added, modelb.features, modela.features, S390_FEAT_MAX);
 649         s390_feat_bitmap_to_ascii(added, &compare_info->responsible_properties,
 650                                   list_add_feat);
 651         if (bitmap_empty(missing, S390_FEAT_MAX)) {
 652             feat_result = CPU_MODEL_COMPARE_RESULT_SUBSET;
 653         } else if (bitmap_empty(added, S390_FEAT_MAX)) {
 654             feat_result = CPU_MODEL_COMPARE_RESULT_SUPERSET;
 655         } else {
 656             feat_result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE;
 657         }
 658     }
 659
 660     /* combine the results */
 661     if (gen_result == feat_result) {
 662         compare_info->result = gen_result;
 663     } else if (feat_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) {
 664         compare_info->result = gen_result;
 665     } else if (gen_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) {
 666         compare_info->result = feat_result;
 667     } else {
 668         compare_info->result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE;
 669     }
 670     return compare_info;
 671 }
 672
 673 CpuModelBaselineInfo *arch_query_cpu_model_baseline(CpuModelInfo *infoa,
 674                                                     CpuModelInfo *infob,
 675                                                     Error **errp)
 676 {
 677     CpuModelBaselineInfo *baseline_info;
 678     S390CPUModel modela, modelb, model;
 679     uint16_t cpu_type;
 680     uint8_t max_gen_ga;
 681     uint8_t max_gen;
 682
 683     /* convert both models to our internal representation */
 684     cpu_model_from_info(&modela, infoa, errp);
 685     if (*errp) {
 686         return NULL;
 687     }
 688
 689     cpu_model_from_info(&modelb, infob, errp);
 690     if (*errp) {
 691         return NULL;
 692     }
 693
 694     /* features both models support */
 695     bitmap_and(model.features, modela.features, modelb.features, S390_FEAT_MAX);
 696
 697     /* detect the maximum model not regarding features */
 698     if (modela.def->gen == modelb.def->gen) {
 699         if (modela.def->type == modelb.def->type) {
 700             cpu_type = modela.def->type;
 701         } else {
 702             cpu_type = 0;
 703         }
 704         max_gen = modela.def->gen;
 705         max_gen_ga = MIN(modela.def->ec_ga, modelb.def->ec_ga);
 706     } else if (modela.def->gen > modelb.def->gen) {
 707         cpu_type = modelb.def->type;
 708         max_gen = modelb.def->gen;
 709         max_gen_ga = modelb.def->ec_ga;
 710     } else {
 711         cpu_type = modela.def->type;
 712         max_gen = modela.def->gen;
 713         max_gen_ga = modela.def->ec_ga;
 714     }
 715
 716     model.def = s390_find_cpu_def(cpu_type, max_gen, max_gen_ga,
 717                                   model.features);
 718     /* strip off features not part of the max model */
 719     bitmap_and(model.features, model.features, model.def->full_feat,
 720                S390_FEAT_MAX);
 721
 722     baseline_info = g_new0(CpuModelBaselineInfo, 1);
 723     baseline_info->model = g_malloc0(sizeof(*baseline_info->model));
 724     cpu_info_from_model(baseline_info->model, &model, true);
 725     return baseline_info;
 726 }
 727 #endif
 728
 729 static void check_consistency(const S390CPUModel *model)
 730 {
 731     static int dep[][2] = {
 732         { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH },
 733         { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH },
 734         { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH },
 735         { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT },
 736         { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH},
 737         { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT },
 738         { S390_FEAT_DFP_FAST, S390_FEAT_DFP },
 739         { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 },
 740         { S390_FEAT_EDAT_2, S390_FEAT_EDAT},
 741         { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 },
 742         { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 },
 743         { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 },
 744         { S390_FEAT_SIE_CMMA, S390_FEAT_CMM },
 745         { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS },
 746         { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT },
 747         { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 },
 748         { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING },
 749         { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR },
 750         { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR },
 751         { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 },
 752         { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP },
 753         { S390_FEAT_CMM_NT, S390_FEAT_CMM },
 754         { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 },
 755         { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST },
 756         { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING },
 757         { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 },
 758         { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA },
 759         { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA },
 760         { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA },
 761         { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA },
 762         { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA },
 763         { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA },
 764         { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA },
 765         { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA },
 766         { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA },
 767         { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA },
 768         { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA },
 769         { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA },
 770         { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 },
 771         { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 },
 772         { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 },
 773     };
 774     int i;
 775
 776     for (i = 0; i < ARRAY_SIZE(dep); i++) {
 777         if (test_bit(dep[i][0], model->features) &&
 778             !test_bit(dep[i][1], model->features)) {
 779             warn_report("\'%s\' requires \'%s\'.",
 780                         s390_feat_def(dep[i][0])->name,
 781                         s390_feat_def(dep[i][1])->name);
 782         }
 783     }
 784 }
 785
 786 static void error_prepend_missing_feat(const char *name, void *opaque)
 787 {
 788     error_prepend((Error **) opaque, "%s ", name);
 789 }
 790
 791 static void check_compatibility(const S390CPUModel *max_model,
 792                                 const S390CPUModel *model, Error **errp)
 793 {
 794     S390FeatBitmap missing;
 795
 796     if (model->def->gen > max_model->def->gen) {
 797         error_setg(errp, "Selected CPU generation is too new. Maximum "
 798                    "supported model in the configuration: \'%s\'",
 799                    max_model->def->name);
 800         return;
 801     } else if (model->def->gen == max_model->def->gen &&
 802                model->def->ec_ga > max_model->def->ec_ga) {
 803         error_setg(errp, "Selected CPU GA level is too new. Maximum "
 804                    "supported model in the configuration: \'%s\'",
 805                    max_model->def->name);
 806         return;
 807     }
 808
 809     /* detect the missing features to properly report them */
 810     bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX);
 811     if (bitmap_empty(missing, S390_FEAT_MAX)) {
 812         return;
 813     }
 814
 815     error_setg(errp, " ");
 816     s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat);
 817     error_prepend(errp, "Some features requested in the CPU model are not "
 818                   "available in the configuration: ");
 819 }
 820
 821 static S390CPUModel *get_max_cpu_model(Error **errp)
 822 {
 823     static S390CPUModel max_model;
 824     static bool cached;
 825
 826     if (cached) {
 827         return &max_model;
 828     }
 829
 830     if (kvm_enabled()) {
 831         kvm_s390_get_host_cpu_model(&max_model, errp);
 832     } else {
 833         max_model.def = s390_find_cpu_def(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN,
 834                                           QEMU_MAX_CPU_EC_GA, NULL);
 835         bitmap_copy(max_model.features, qemu_max_cpu_feat, S390_FEAT_MAX);
 836    }
 837     if (!*errp) {
 838         cached = true;
 839         return &max_model;
 840     }
 841     return NULL;
 842 }
 843
 844 static inline void apply_cpu_model(const S390CPUModel *model, Error **errp)
 845 {
 846 #ifndef CONFIG_USER_ONLY
 847     static S390CPUModel applied_model;
 848     static bool applied;
 849
 850     /*
 851      * We have the same model for all VCPUs. KVM can only be configured before
 852      * any VCPUs are defined in KVM.
 853      */
 854     if (applied) {
 855         if (model && memcmp(&applied_model, model, sizeof(S390CPUModel))) {
 856             error_setg(errp, "Mixed CPU models are not supported on s390x.");
 857         }
 858         return;
 859     }
 860
 861     if (kvm_enabled()) {
 862         kvm_s390_apply_cpu_model(model, errp);
 863     }
 864
 865     if (!*errp) {
 866         applied = true;
 867         if (model) {
 868             applied_model = *model;
 869         }
 870     }
 871 #endif
 872 }
 873
 874 void s390_realize_cpu_model(CPUState *cs, Error **errp)
 875 {
 876     S390CPUClass *xcc = S390_CPU_GET_CLASS(cs);
 877     S390CPU *cpu = S390_CPU(cs);
 878     const S390CPUModel *max_model;
 879
 880     if (xcc->kvm_required && !kvm_enabled()) {
 881         error_setg(errp, "CPU definition requires KVM");
 882         return;
 883     }
 884
 885     if (!cpu->model) {
 886         /* no host model support -> perform compatibility stuff */
 887         apply_cpu_model(NULL, errp);
 888         return;
 889     }
 890
 891     max_model = get_max_cpu_model(errp);
 892     if (*errp) {
 893         error_prepend(errp, "CPU models are not available: ");
 894         return;
 895     }
 896
 897     /* copy over properties that can vary */
 898     cpu->model->lowest_ibc = max_model->lowest_ibc;
 899     cpu->model->cpu_id = max_model->cpu_id;
 900     cpu->model->cpu_id_format = max_model->cpu_id_format;
 901     cpu->model->cpu_ver = max_model->cpu_ver;
 902
 903     check_consistency(cpu->model);
 904     check_compatibility(max_model, cpu->model, errp);
 905     if (*errp) {
 906         return;
 907     }
 908
 909     apply_cpu_model(cpu->model, errp);
 910
 911 #if !defined(CONFIG_USER_ONLY)
 912     cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model);
 913     if (tcg_enabled()) {
 914         /* basic mode, write the cpu address into the first 4 bit of the ID */
 915         cpu->env.cpuid = deposit64(cpu->env.cpuid, 54, 4, cpu->env.core_id);
 916     }
 917 #endif
 918 }
 919
 920 static void get_feature(Object *obj, Visitor *v, const char *name,
 921                         void *opaque, Error **errp)
 922 {
 923     S390Feat feat = (S390Feat) opaque;
 924     S390CPU *cpu = S390_CPU(obj);
 925     bool value;
 926
 927     if (!cpu->model) {
 928         error_setg(errp, "Details about the host CPU model are not available, "
 929                          "features cannot be queried.");
 930         return;
 931     }
 932
 933     value = test_bit(feat, cpu->model->features);
 934     visit_type_bool(v, name, &value, errp);
 935 }
 936
 937 static void set_feature(Object *obj, Visitor *v, const char *name,
 938                         void *opaque, Error **errp)
 939 {
 940     S390Feat feat = (S390Feat) opaque;
 941     DeviceState *dev = DEVICE(obj);
 942     S390CPU *cpu = S390_CPU(obj);
 943     bool value;
 944
 945     if (dev->realized) {
 946         error_setg(errp, "Attempt to set property '%s' on '%s' after "
 947                    "it was realized", name, object_get_typename(obj));
 948         return;
 949     } else if (!cpu->model) {
 950         error_setg(errp, "Details about the host CPU model are not available, "
 951                          "features cannot be changed.");
 952         return;
 953     }
 954
 955     visit_type_bool(v, name, &value, errp);
 956     if (*errp) {
 957         return;
 958     }
 959     if (value) {
 960         if (!test_bit(feat, cpu->model->def->full_feat)) {
 961             error_setg(errp, "Feature '%s' is not available for CPU model '%s',"
 962                        " it was introduced with later models.",
 963                        name, cpu->model->def->name);
 964             return;
 965         }
 966         set_bit(feat, cpu->model->features);
 967     } else {
 968         clear_bit(feat, cpu->model->features);
 969     }
 970 }
 971
 972 static void get_feature_group(Object *obj, Visitor *v, const char *name,
 973                               void *opaque, Error **errp)
 974 {
 975     S390FeatGroup group = (S390FeatGroup) opaque;
 976     const S390FeatGroupDef *def = s390_feat_group_def(group);
 977     S390CPU *cpu = S390_CPU(obj);
 978     S390FeatBitmap tmp;
 979     bool value;
 980
 981     if (!cpu->model) {
 982         error_setg(errp, "Details about the host CPU model are not available, "
 983                          "features cannot be queried.");
 984         return;
 985     }
 986
 987     /* a group is enabled if all features are enabled */
 988     bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX);
 989     value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX);
 990     visit_type_bool(v, name, &value, errp);
 991 }
 992
 993 static void set_feature_group(Object *obj, Visitor *v, const char *name,
 994                               void *opaque, Error **errp)
 995 {
 996     S390FeatGroup group = (S390FeatGroup) opaque;
 997     const S390FeatGroupDef *def = s390_feat_group_def(group);
 998     DeviceState *dev = DEVICE(obj);
 999     S390CPU *cpu = S390_CPU(obj);
1000     bool value;
1001
1002     if (dev->realized) {
1003         error_setg(errp, "Attempt to set property '%s' on '%s' after "
1004                    "it was realized", name, object_get_typename(obj));
1005         return;
1006     } else if (!cpu->model) {
1007         error_setg(errp, "Details about the host CPU model are not available, "
1008                          "features cannot be changed.");
1009         return;
1010     }
1011
1012     visit_type_bool(v, name, &value, errp);
1013     if (*errp) {
1014         return;
1015     }
1016     if (value) {
1017         /* groups are added in one shot, so an intersect is sufficient */
1018         if (!bitmap_intersects(def->feat, cpu->model->def->full_feat,
1019                                S390_FEAT_MAX)) {
1020             error_setg(errp, "Group '%s' is not available for CPU model '%s',"
1021                        " it was introduced with later models.",
1022                        name, cpu->model->def->name);
1023             return;
1024         }
1025         bitmap_or(cpu->model->features, cpu->model->features, def->feat,
1026                   S390_FEAT_MAX);
1027     } else {
1028         bitmap_andnot(cpu->model->features, cpu->model->features, def->feat,
1029                       S390_FEAT_MAX);
1030     }
1031 }
1032
1033 void s390_cpu_model_register_props(Object *obj)
1034 {
1035     S390FeatGroup group;
1036     S390Feat feat;
1037
1038     for (feat = 0; feat < S390_FEAT_MAX; feat++) {
1039         const S390FeatDef *def = s390_feat_def(feat);
1040         object_property_add(obj, def->name, "bool", get_feature,
1041                             set_feature, NULL, (void *) feat, NULL);
1042         object_property_set_description(obj, def->name, def->desc , NULL);
1043     }
1044     for (group = 0; group < S390_FEAT_GROUP_MAX; group++) {
1045         const S390FeatGroupDef *def = s390_feat_group_def(group);
1046         object_property_add(obj, def->name, "bool", get_feature_group,
1047                             set_feature_group, NULL, (void *) group, NULL);
1048         object_property_set_description(obj, def->name, def->desc , NULL);
1049     }
1050 }
1051
1052 static void s390_cpu_model_initfn(Object *obj)
1053 {
1054     S390CPU *cpu = S390_CPU(obj);
1055     S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu);
1056
1057     cpu->model = g_malloc0(sizeof(*cpu->model));
1058     /* copy the model, so we can modify it */
1059     cpu->model->def = xcc->cpu_def;
1060     if (xcc->is_static) {
1061         /* base model - features will never change */
1062         bitmap_copy(cpu->model->features, cpu->model->def->base_feat,
1063                     S390_FEAT_MAX);
1064     } else {
1065         /* latest model - features can change */
1066         bitmap_copy(cpu->model->features,
1067                     cpu->model->def->default_feat, S390_FEAT_MAX);
1068     }
1069 }
1070
1071 #ifdef CONFIG_KVM
1072 static void s390_host_cpu_model_initfn(Object *obj)
1073 {
1074     S390CPU *cpu = S390_CPU(obj);
1075     Error *err = NULL;
1076
1077     if (!kvm_enabled() || !kvm_s390_cpu_models_supported()) {
1078         return;
1079     }
1080
1081     cpu->model = g_malloc0(sizeof(*cpu->model));
1082     kvm_s390_get_host_cpu_model(cpu->model, &err);
1083     if (err) {
1084         error_report_err(err);
1085         g_free(cpu->model);
1086         /* fallback to unsupported cpu models */
1087         cpu->model = NULL;
1088     }
1089 }
1090 #endif
1091
1092 static S390CPUDef s390_qemu_cpu_def;
1093 static S390CPUModel s390_qemu_cpu_model;
1094
1095 /* Set the qemu CPU model (on machine initialization). Must not be called
1096  * once CPUs have been created.
1097  */
1098 void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga,
1099                              const S390FeatInit feat_init)
1100 {
1101     const S390CPUDef *def = s390_find_cpu_def(type, gen, ec_ga, NULL);
1102
1103     g_assert(def);
1104     g_assert(QTAILQ_EMPTY(&cpus));
1105
1106     /* TCG emulates some features that can usually not be enabled with
1107      * the emulated machine generation. Make sure they can be enabled
1108      * when using the QEMU model by adding them to full_feat. We have
1109      * to copy the definition to do that.
1110      */
1111     memcpy(&s390_qemu_cpu_def, def, sizeof(s390_qemu_cpu_def));
1112     bitmap_or(s390_qemu_cpu_def.full_feat, s390_qemu_cpu_def.full_feat,
1113               qemu_max_cpu_feat, S390_FEAT_MAX);
1114
1115     /* build the CPU model */
1116     s390_qemu_cpu_model.def = &s390_qemu_cpu_def;
1117     bitmap_zero(s390_qemu_cpu_model.features, S390_FEAT_MAX);
1118     s390_init_feat_bitmap(feat_init, s390_qemu_cpu_model.features);
1119 }
1120
1121 static void s390_qemu_cpu_model_initfn(Object *obj)
1122 {
1123     S390CPU *cpu = S390_CPU(obj);
1124
1125     cpu->model = g_malloc0(sizeof(*cpu->model));
1126     /* copy the CPU model so we can modify it */
1127     memcpy(cpu->model, &s390_qemu_cpu_model, sizeof(*cpu->model));
1128 }
1129
1130 static void s390_cpu_model_finalize(Object *obj)
1131 {
1132     S390CPU *cpu = S390_CPU(obj);
1133
1134     g_free(cpu->model);
1135     cpu->model = NULL;
1136 }
1137
1138 static bool get_is_migration_safe(Object *obj, Error **errp)
1139 {
1140     return S390_CPU_GET_CLASS(obj)->is_migration_safe;
1141 }
1142
1143 static bool get_is_static(Object *obj, Error **errp)
1144 {
1145     return S390_CPU_GET_CLASS(obj)->is_static;
1146 }
1147
1148 static char *get_description(Object *obj, Error **errp)
1149 {
1150     return g_strdup(S390_CPU_GET_CLASS(obj)->desc);
1151 }
1152
1153 void s390_cpu_model_class_register_props(ObjectClass *oc)
1154 {
1155     object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe,
1156                                    NULL, NULL);
1157     object_class_property_add_bool(oc, "static", get_is_static,
1158                                    NULL, NULL);
1159     object_class_property_add_str(oc, "description", get_description, NULL,
1160                                   NULL);
1161 }
1162
1163 #ifdef CONFIG_KVM
1164 static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data)
1165 {
1166     S390CPUClass *xcc = S390_CPU_CLASS(oc);
1167
1168     xcc->kvm_required = true;
1169     xcc->desc = "KVM only: All recognized features";
1170 }
1171 #endif
1172
1173 static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data)
1174 {
1175     S390CPUClass *xcc = S390_CPU_CLASS(oc);
1176
1177     /* all base models are migration safe */
1178     xcc->cpu_def = (const S390CPUDef *) data;
1179     xcc->is_migration_safe = true;
1180     xcc->is_static = true;
1181     xcc->desc = xcc->cpu_def->desc;
1182 }
1183
1184 static void s390_cpu_model_class_init(ObjectClass *oc, void *data)
1185 {
1186     S390CPUClass *xcc = S390_CPU_CLASS(oc);
1187
1188     /* model that can change between QEMU versions */
1189     xcc->cpu_def = (const S390CPUDef *) data;
1190     xcc->is_migration_safe = true;
1191     xcc->desc = xcc->cpu_def->desc;
1192 }
1193
1194 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data)
1195 {
1196     S390CPUClass *xcc = S390_CPU_CLASS(oc);
1197
1198     xcc->is_migration_safe = true;
1199     xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s",
1200                                 qemu_hw_version());
1201 }
1202
1203 /* Generate type name for a cpu model. Caller has to free the string. */
1204 static char *s390_cpu_type_name(const char *model_name)
1205 {
1206     return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name);
1207 }
1208
1209 /* Generate type name for a base cpu model. Caller has to free the string. */
1210 static char *s390_base_cpu_type_name(const char *model_name)
1211 {
1212     return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name);
1213 }
1214
1215 ObjectClass *s390_cpu_class_by_name(const char *name)
1216 {
1217     char *typename = s390_cpu_type_name(name);
1218     ObjectClass *oc;
1219
1220     oc = object_class_by_name(typename);
1221     g_free(typename);
1222     return oc;
1223 }
1224
1225 static const TypeInfo qemu_s390_cpu_type_info = {
1226     .name = S390_CPU_TYPE_NAME("qemu"),
1227     .parent = TYPE_S390_CPU,
1228     .instance_init = s390_qemu_cpu_model_initfn,
1229     .instance_finalize = s390_cpu_model_finalize,
1230     .class_init = s390_qemu_cpu_model_class_init,
1231 };
1232
1233 #ifdef CONFIG_KVM
1234 static const TypeInfo host_s390_cpu_type_info = {
1235     .name = S390_CPU_TYPE_NAME("host"),
1236     .parent = TYPE_S390_CPU,
1237     .instance_init = s390_host_cpu_model_initfn,
1238     .instance_finalize = s390_cpu_model_finalize,
1239     .class_init = s390_host_cpu_model_class_init,
1240 };
1241 #endif
1242
1243 static void init_ignored_base_feat(void)
1244 {
1245     static const int feats[] = {
1246          /* MSA subfunctions that could not be available on certain machines */
1247          S390_FEAT_KMAC_DEA,
1248          S390_FEAT_KMAC_TDEA_128,
1249          S390_FEAT_KMAC_TDEA_192,
1250          S390_FEAT_KMC_DEA,
1251          S390_FEAT_KMC_TDEA_128,
1252          S390_FEAT_KMC_TDEA_192,
1253          S390_FEAT_KM_DEA,
1254          S390_FEAT_KM_TDEA_128,
1255          S390_FEAT_KM_TDEA_192,
1256          S390_FEAT_KIMD_SHA_1,
1257          S390_FEAT_KLMD_SHA_1,
1258     };
1259     int i;
1260
1261     for (i = 0; i < ARRAY_SIZE(feats); i++) {
1262         set_bit(feats[i], ignored_base_feat);
1263     }
1264 }
1265
1266 static void register_types(void)
1267 {
1268     static const S390FeatInit qemu_latest_init = { S390_FEAT_LIST_QEMU_LATEST };
1269     int i;
1270
1271     init_ignored_base_feat();
1272
1273     /* init all bitmaps from gnerated data initially */
1274     s390_init_feat_bitmap(qemu_max_cpu_feat_init, qemu_max_cpu_feat);
1275 #ifndef CONFIG_USER_ONLY
1276     if (!pci_available) {
1277         clear_bit(S390_FEAT_ZPCI, qemu_max_cpu_feat);
1278     }
1279 #endif
1280     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
1281         s390_init_feat_bitmap(s390_cpu_defs[i].base_init,
1282                               s390_cpu_defs[i].base_feat);
1283         s390_init_feat_bitmap(s390_cpu_defs[i].default_init,
1284                               s390_cpu_defs[i].default_feat);
1285         s390_init_feat_bitmap(s390_cpu_defs[i].full_init,
1286                               s390_cpu_defs[i].full_feat);
1287     }
1288
1289     /* initialize the qemu model with latest definition */
1290     s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN,
1291                             QEMU_MAX_CPU_EC_GA, qemu_latest_init);
1292
1293     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
1294         char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name);
1295         TypeInfo ti_base = {
1296             .name = base_name,
1297             .parent = TYPE_S390_CPU,
1298             .instance_init = s390_cpu_model_initfn,
1299             .instance_finalize = s390_cpu_model_finalize,
1300             .class_init = s390_base_cpu_model_class_init,
1301             .class_data = (void *) &s390_cpu_defs[i],
1302         };
1303         char *name = s390_cpu_type_name(s390_cpu_defs[i].name);
1304         TypeInfo ti = {
1305             .name = name,
1306             .parent = TYPE_S390_CPU,
1307             .instance_init = s390_cpu_model_initfn,
1308             .instance_finalize = s390_cpu_model_finalize,
1309             .class_init = s390_cpu_model_class_init,
1310             .class_data = (void *) &s390_cpu_defs[i],
1311         };
1312
1313         type_register_static(&ti_base);
1314         type_register_static(&ti);
1315         g_free(base_name);
1316         g_free(name);
1317     }
1318
1319     type_register_static(&qemu_s390_cpu_type_info);
1320 #ifdef CONFIG_KVM
1321     type_register_static(&host_s390_cpu_type_info);
1322 #endif
1323 }
1324
1325 type_init(register_types)