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 "s390x-internal.h"
  16 #include "kvm/kvm_s390x.h"
  17 #include "sysemu/kvm.h"
  18 #include "sysemu/tcg.h"
  19 #include "qapi/error.h"
  20 #include "qemu/error-report.h"
  21 #include "qapi/visitor.h"
  22 #include "qemu/module.h"
  23 #include "qemu/hw-version.h"
  24 #include "qemu/qemu-print.h"
  25 #ifndef CONFIG_USER_ONLY
  26 #include "sysemu/sysemu.h"
  27 #include "target/s390x/kvm/pv.h"
  28 #endif
  29
  30 #define CPUDEF_INIT(_type, _gen, _ec_ga, _mha_pow, _hmfai, _name, _desc) \
  31     {                                                                    \
  32         .name = _name,                                                   \
  33         .type = _type,                                                   \
  34         .gen = _gen,                                                     \
  35         .ec_ga = _ec_ga,                                                 \
  36         .mha_pow = _mha_pow,                                             \
  37         .hmfai = _hmfai,                                                 \
  38         .desc = _desc,                                                   \
  39         .base_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _BASE },  \
  40         .default_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _DEFAULT },  \
  41         .full_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _FULL },  \
  42     }
  43
  44 /*
  45  * CPU definition list in order of release. Up to generation 14 base features
  46  * of a following release have been a superset of the previous release. With
  47  * generation 15 one base feature and one optional feature have been deprecated.
  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     CPUDEF_INIT(0x3906, 14, 2, 47, 0x08000000U, "z14.2", "IBM z14 GA2"),
  83     CPUDEF_INIT(0x3907, 14, 1, 47, 0x08000000U, "z14ZR1", "IBM z14 Model ZR1 GA1"),
  84     CPUDEF_INIT(0x8561, 15, 1, 47, 0x08000000U, "gen15a", "IBM z15 T01 GA1"),
  85     CPUDEF_INIT(0x8562, 15, 1, 47, 0x08000000U, "gen15b", "IBM z15 T02 GA1"),
  86     CPUDEF_INIT(0x3931, 16, 1, 47, 0x08000000U, "gen16a", "IBM 3931 GA1"),
  87     CPUDEF_INIT(0x3932, 16, 1, 47, 0x08000000U, "gen16b", "IBM 3932 GA1"),
  88 };
  89
  90 #define QEMU_MAX_CPU_TYPE 0x8561
  91 #define QEMU_MAX_CPU_GEN 15
  92 #define QEMU_MAX_CPU_EC_GA 1
  93 static S390FeatBitmap qemu_max_cpu_feat;
  94
  95 /* features part of a base model but not relevant for finding a base model */
  96 S390FeatBitmap ignored_base_feat;
  97
  98 void s390_cpudef_featoff(uint8_t gen, uint8_t ec_ga, S390Feat feat)
  99 {
 100     const S390CPUDef *def;
 101
 102     def = s390_find_cpu_def(0, gen, ec_ga, NULL);
 103     clear_bit(feat, (unsigned long *)&def->default_feat);
 104 }
 105
 106 void s390_cpudef_featoff_greater(uint8_t gen, uint8_t ec_ga, S390Feat feat)
 107 {
 108     int i;
 109
 110     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
 111         const S390CPUDef *def = &s390_cpu_defs[i];
 112
 113         if (def->gen < gen) {
 114             continue;
 115         }
 116         if (def->gen == gen && def->ec_ga < ec_ga) {
 117             continue;
 118         }
 119
 120         clear_bit(feat, (unsigned long *)&def->default_feat);
 121     }
 122 }
 123
 124 void s390_cpudef_group_featoff_greater(uint8_t gen, uint8_t ec_ga,
 125                                        S390FeatGroup group)
 126 {
 127     const S390FeatGroupDef *group_def = s390_feat_group_def(group);
 128     S390FeatBitmap group_def_off;
 129     int i;
 130
 131     bitmap_complement(group_def_off, group_def->feat, S390_FEAT_MAX);
 132
 133     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
 134         const S390CPUDef *cpu_def = &s390_cpu_defs[i];
 135
 136         if (cpu_def->gen < gen) {
 137             continue;
 138         }
 139         if (cpu_def->gen == gen && cpu_def->ec_ga < ec_ga) {
 140             continue;
 141         }
 142
 143         bitmap_and((unsigned long *)&cpu_def->default_feat,
 144                    cpu_def->default_feat, group_def_off, S390_FEAT_MAX);
 145     }
 146 }
 147
 148 uint32_t s390_get_hmfai(void)
 149 {
 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     return cpu->model->def->hmfai;
 160 }
 161
 162 uint8_t s390_get_mha_pow(void)
 163 {
 164     static S390CPU *cpu;
 165
 166     if (!cpu) {
 167         cpu = S390_CPU(qemu_get_cpu(0));
 168     }
 169
 170     if (!cpu || !cpu->model) {
 171         return 0;
 172     }
 173     return cpu->model->def->mha_pow;
 174 }
 175
 176 uint32_t s390_get_ibc_val(void)
 177 {
 178     uint16_t unblocked_ibc, lowest_ibc;
 179     static S390CPU *cpu;
 180
 181     if (!cpu) {
 182         cpu = S390_CPU(qemu_get_cpu(0));
 183     }
 184
 185     if (!cpu || !cpu->model) {
 186         return 0;
 187     }
 188     unblocked_ibc = s390_ibc_from_cpu_model(cpu->model);
 189     lowest_ibc = cpu->model->lowest_ibc;
 190     /* the lowest_ibc always has to be <= unblocked_ibc */
 191     if (!lowest_ibc || lowest_ibc > unblocked_ibc) {
 192         return 0;
 193     }
 194     return ((uint32_t) lowest_ibc << 16) | unblocked_ibc;
 195 }
 196
 197 void s390_get_feat_block(S390FeatType type, uint8_t *data)
 198 {
 199     static S390CPU *cpu;
 200
 201     if (!cpu) {
 202         cpu = S390_CPU(qemu_get_cpu(0));
 203     }
 204
 205     if (!cpu || !cpu->model) {
 206         return;
 207     }
 208     s390_fill_feat_block(cpu->model->features, type, data);
 209 }
 210
 211 bool s390_has_feat(S390Feat feat)
 212 {
 213     static S390CPU *cpu;
 214
 215     if (!cpu) {
 216         cpu = S390_CPU(qemu_get_cpu(0));
 217     }
 218
 219     if (!cpu || !cpu->model) {
 220 #ifdef CONFIG_KVM
 221         if (kvm_enabled()) {
 222             if (feat == S390_FEAT_VECTOR) {
 223                 return kvm_check_extension(kvm_state,
 224                                            KVM_CAP_S390_VECTOR_REGISTERS);
 225             }
 226             if (feat == S390_FEAT_RUNTIME_INSTRUMENTATION) {
 227                 return kvm_s390_get_ri();
 228             }
 229             if (feat == S390_FEAT_MSA_EXT_3) {
 230                 return true;
 231             }
 232         }
 233 #endif
 234         if (feat == S390_FEAT_ZPCI) {
 235             return true;
 236         }
 237         return 0;
 238     }
 239
 240 #ifndef CONFIG_USER_ONLY
 241     if (s390_is_pv()) {
 242         switch (feat) {
 243         case S390_FEAT_DIAG_318:
 244         case S390_FEAT_HPMA2:
 245         case S390_FEAT_SIE_F2:
 246         case S390_FEAT_SIE_SKEY:
 247         case S390_FEAT_SIE_GPERE:
 248         case S390_FEAT_SIE_SIIF:
 249         case S390_FEAT_SIE_SIGPIF:
 250         case S390_FEAT_SIE_IB:
 251         case S390_FEAT_SIE_CEI:
 252         case S390_FEAT_SIE_KSS:
 253         case S390_FEAT_SIE_GSLS:
 254         case S390_FEAT_SIE_64BSCAO:
 255         case S390_FEAT_SIE_CMMA:
 256         case S390_FEAT_SIE_PFMFI:
 257         case S390_FEAT_SIE_IBS:
 258             return false;
 259             break;
 260         default:
 261             break;
 262         }
 263     }
 264 #endif
 265     return test_bit(feat, cpu->model->features);
 266 }
 267
 268 uint8_t s390_get_gen_for_cpu_type(uint16_t type)
 269 {
 270     int i;
 271
 272     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
 273         if (s390_cpu_defs[i].type == type) {
 274             return s390_cpu_defs[i].gen;
 275         }
 276     }
 277     return 0;
 278 }
 279
 280 const S390CPUDef *s390_find_cpu_def(uint16_t type, uint8_t gen, uint8_t ec_ga,
 281                                     S390FeatBitmap features)
 282 {
 283     const S390CPUDef *last_compatible = NULL;
 284     const S390CPUDef *matching_cpu_type = NULL;
 285     int i;
 286
 287     if (!gen) {
 288         ec_ga = 0;
 289     }
 290     if (!gen && type) {
 291         gen = s390_get_gen_for_cpu_type(type);
 292     }
 293
 294     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
 295         const S390CPUDef *def = &s390_cpu_defs[i];
 296         S390FeatBitmap missing;
 297
 298         /* don't even try newer generations if we know the generation */
 299         if (gen) {
 300             if (def->gen > gen) {
 301                 break;
 302             } else if (def->gen == gen && ec_ga && def->ec_ga > ec_ga) {
 303                 break;
 304             }
 305         }
 306
 307         if (features) {
 308             /* see if the model satisfies the minimum features */
 309             bitmap_andnot(missing, def->base_feat, features, S390_FEAT_MAX);
 310             /*
 311              * Ignore certain features that are in the base model, but not
 312              * relevant for the search (esp. MSA subfunctions).
 313              */
 314             bitmap_andnot(missing, missing, ignored_base_feat, S390_FEAT_MAX);
 315             if (!bitmap_empty(missing, S390_FEAT_MAX)) {
 316                 break;
 317             }
 318         }
 319
 320         /* stop the search if we found the exact model */
 321         if (def->type == type && def->ec_ga == ec_ga) {
 322             return def;
 323         }
 324         /* remember if we've at least seen one with the same cpu type */
 325         if (def->type == type) {
 326             matching_cpu_type = def;
 327         }
 328         last_compatible = def;
 329     }
 330     /* prefer the model with the same cpu type, esp. don't take the BC for EC */
 331     if (matching_cpu_type) {
 332         return matching_cpu_type;
 333     }
 334     return last_compatible;
 335 }
 336
 337 static void s390_print_cpu_model_list_entry(gpointer data, gpointer user_data)
 338 {
 339     const S390CPUClass *scc = S390_CPU_CLASS((ObjectClass *)data);
 340     CPUClass *cc = CPU_CLASS(scc);
 341     char *name = g_strdup(object_class_get_name((ObjectClass *)data));
 342     g_autoptr(GString) details = g_string_new("");
 343
 344     if (scc->is_static) {
 345         g_string_append(details, "static, ");
 346     }
 347     if (scc->is_migration_safe) {
 348         g_string_append(details, "migration-safe, ");
 349     }
 350     if (cc->deprecation_note) {
 351         g_string_append(details, "deprecated, ");
 352     }
 353     if (details->len) {
 354         /* cull trailing ', ' */
 355         g_string_truncate(details, details->len - 2);
 356     }
 357
 358     /* strip off the -s390x-cpu */
 359     g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0;
 360     if (details->len) {
 361         qemu_printf("s390 %-15s %-35s (%s)\n", name, scc->desc, details->str);
 362     } else {
 363         qemu_printf("s390 %-15s %-35s\n", name, scc->desc);
 364     }
 365     g_free(name);
 366 }
 367
 368 static gint s390_cpu_list_compare(gconstpointer a, gconstpointer b)
 369 {
 370     const S390CPUClass *cc_a = S390_CPU_CLASS((ObjectClass *)a);
 371     const S390CPUClass *cc_b = S390_CPU_CLASS((ObjectClass *)b);
 372     const char *name_a = object_class_get_name((ObjectClass *)a);
 373     const char *name_b = object_class_get_name((ObjectClass *)b);
 374
 375     /*
 376      * Move qemu, host and max to the top of the list, qemu first, host second,
 377      * max third.
 378      */
 379     if (name_a[0] == 'q') {
 380         return -1;
 381     } else if (name_b[0] == 'q') {
 382         return 1;
 383     } else if (name_a[0] == 'h') {
 384         return -1;
 385     } else if (name_b[0] == 'h') {
 386         return 1;
 387     } else if (name_a[0] == 'm') {
 388         return -1;
 389     } else if (name_b[0] == 'm') {
 390         return 1;
 391     }
 392
 393     /* keep the same order we have in our table (sorted by release date) */
 394     if (cc_a->cpu_def != cc_b->cpu_def) {
 395         return cc_a->cpu_def - cc_b->cpu_def;
 396     }
 397
 398     /* exact same definition - list base model first */
 399     return cc_a->is_static ? -1 : 1;
 400 }
 401
 402 void s390_cpu_list(void)
 403 {
 404     S390FeatGroup group;
 405     S390Feat feat;
 406     GSList *list;
 407
 408     list = object_class_get_list(TYPE_S390_CPU, false);
 409     list = g_slist_sort(list, s390_cpu_list_compare);
 410     g_slist_foreach(list, s390_print_cpu_model_list_entry, NULL);
 411     g_slist_free(list);
 412
 413     qemu_printf("\nRecognized feature flags:\n");
 414     for (feat = 0; feat < S390_FEAT_MAX; feat++) {
 415         const S390FeatDef *def = s390_feat_def(feat);
 416
 417         qemu_printf("%-20s %s\n", def->name, def->desc);
 418     }
 419
 420     qemu_printf("\nRecognized feature groups:\n");
 421     for (group = 0; group < S390_FEAT_GROUP_MAX; group++) {
 422         const S390FeatGroupDef *def = s390_feat_group_def(group);
 423
 424         qemu_printf("%-20s %s\n", def->name, def->desc);
 425     }
 426 }
 427
 428 static void check_consistency(const S390CPUModel *model)
 429 {
 430     static int dep[][2] = {
 431         { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH },
 432         { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH },
 433         { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH },
 434         { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT },
 435         { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH},
 436         { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT },
 437         { S390_FEAT_DFP_FAST, S390_FEAT_DFP },
 438         { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 },
 439         { S390_FEAT_EDAT_2, S390_FEAT_EDAT},
 440         { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 },
 441         { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 },
 442         { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 },
 443         { S390_FEAT_SIE_CMMA, S390_FEAT_CMM },
 444         { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS },
 445         { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT },
 446         { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 },
 447         { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_3 },
 448         { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_4 },
 449         { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING },
 450         { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR },
 451         { S390_FEAT_VECTOR_PACKED_DECIMAL_ENH, S390_FEAT_VECTOR_PACKED_DECIMAL },
 452         { S390_FEAT_VECTOR_PACKED_DECIMAL_ENH2, S390_FEAT_VECTOR_PACKED_DECIMAL_ENH },
 453         { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR },
 454         { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 },
 455         { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP },
 456         { S390_FEAT_CMM_NT, S390_FEAT_CMM },
 457         { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 },
 458         { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST },
 459         { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING },
 460         { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 },
 461         { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA },
 462         { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA },
 463         { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA },
 464         { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA },
 465         { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA },
 466         { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA },
 467         { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA },
 468         { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA },
 469         { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA },
 470         { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA },
 471         { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA },
 472         { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA },
 473         { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 },
 474         { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 },
 475         { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 },
 476         { S390_FEAT_AP_QUERY_CONFIG_INFO, S390_FEAT_AP },
 477         { S390_FEAT_AP_FACILITIES_TEST, S390_FEAT_AP },
 478         { S390_FEAT_PTFF_QSIE, S390_FEAT_MULTIPLE_EPOCH },
 479         { S390_FEAT_PTFF_QTOUE, S390_FEAT_MULTIPLE_EPOCH },
 480         { S390_FEAT_PTFF_STOE, S390_FEAT_MULTIPLE_EPOCH },
 481         { S390_FEAT_PTFF_STOUE, S390_FEAT_MULTIPLE_EPOCH },
 482         { S390_FEAT_AP_QUEUE_INTERRUPT_CONTROL, S390_FEAT_AP },
 483         { S390_FEAT_DIAG_318, S390_FEAT_EXTENDED_LENGTH_SCCB },
 484         { S390_FEAT_NNPA, S390_FEAT_VECTOR },
 485         { S390_FEAT_RDP, S390_FEAT_LOCAL_TLB_CLEARING },
 486     };
 487     int i;
 488
 489     for (i = 0; i < ARRAY_SIZE(dep); i++) {
 490         if (test_bit(dep[i][0], model->features) &&
 491             !test_bit(dep[i][1], model->features)) {
 492             warn_report("\'%s\' requires \'%s\'.",
 493                         s390_feat_def(dep[i][0])->name,
 494                         s390_feat_def(dep[i][1])->name);
 495         }
 496     }
 497 }
 498
 499 static void error_prepend_missing_feat(const char *name, void *opaque)
 500 {
 501     error_prepend((Error **) opaque, "%s ", name);
 502 }
 503
 504 static void check_compatibility(const S390CPUModel *max_model,
 505                                 const S390CPUModel *model, Error **errp)
 506 {
 507     S390FeatBitmap missing;
 508
 509     if (model->def->gen > max_model->def->gen) {
 510         error_setg(errp, "Selected CPU generation is too new. Maximum "
 511                    "supported model in the configuration: \'%s\'",
 512                    max_model->def->name);
 513         return;
 514     } else if (model->def->gen == max_model->def->gen &&
 515                model->def->ec_ga > max_model->def->ec_ga) {
 516         error_setg(errp, "Selected CPU GA level is too new. Maximum "
 517                    "supported model in the configuration: \'%s\'",
 518                    max_model->def->name);
 519         return;
 520     }
 521
 522 #ifndef CONFIG_USER_ONLY
 523     if (only_migratable && test_bit(S390_FEAT_UNPACK, model->features)) {
 524         error_setg(errp, "The unpack facility is not compatible with "
 525                    "the --only-migratable option. You must remove either "
 526                    "the 'unpack' facility or the --only-migratable option");
 527         return;
 528     }
 529 #endif
 530
 531     /* detect the missing features to properly report them */
 532     bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX);
 533     if (bitmap_empty(missing, S390_FEAT_MAX)) {
 534         return;
 535     }
 536
 537     error_setg(errp, " ");
 538     s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat);
 539     error_prepend(errp, "Some features requested in the CPU model are not "
 540                   "available in the configuration: ");
 541 }
 542
 543 S390CPUModel *get_max_cpu_model(Error **errp)
 544 {
 545     Error *err = NULL;
 546     static S390CPUModel max_model;
 547     static bool cached;
 548
 549     if (cached) {
 550         return &max_model;
 551     }
 552
 553     if (kvm_enabled()) {
 554         kvm_s390_get_host_cpu_model(&max_model, &err);
 555     } else {
 556         max_model.def = s390_find_cpu_def(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN,
 557                                           QEMU_MAX_CPU_EC_GA, NULL);
 558         bitmap_copy(max_model.features, qemu_max_cpu_feat, S390_FEAT_MAX);
 559     }
 560     if (err) {
 561         error_propagate(errp, err);
 562         return NULL;
 563     }
 564     cached = true;
 565     return &max_model;
 566 }
 567
 568 void s390_realize_cpu_model(CPUState *cs, Error **errp)
 569 {
 570     Error *err = NULL;
 571     S390CPUClass *xcc = S390_CPU_GET_CLASS(cs);
 572     S390CPU *cpu = S390_CPU(cs);
 573     const S390CPUModel *max_model;
 574
 575     if (xcc->kvm_required && !kvm_enabled()) {
 576         error_setg(errp, "CPU definition requires KVM");
 577         return;
 578     }
 579
 580     if (!cpu->model) {
 581         /* no host model support -> perform compatibility stuff */
 582         apply_cpu_model(NULL, errp);
 583         return;
 584     }
 585
 586     max_model = get_max_cpu_model(errp);
 587     if (!max_model) {
 588         error_prepend(errp, "CPU models are not available: ");
 589         return;
 590     }
 591
 592     /* copy over properties that can vary */
 593     cpu->model->lowest_ibc = max_model->lowest_ibc;
 594     cpu->model->cpu_id = max_model->cpu_id;
 595     cpu->model->cpu_id_format = max_model->cpu_id_format;
 596     cpu->model->cpu_ver = max_model->cpu_ver;
 597
 598     check_consistency(cpu->model);
 599     check_compatibility(max_model, cpu->model, &err);
 600     if (err) {
 601         error_propagate(errp, err);
 602         return;
 603     }
 604
 605     apply_cpu_model(cpu->model, errp);
 606
 607 #if !defined(CONFIG_USER_ONLY)
 608     cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model);
 609     if (tcg_enabled()) {
 610         cpu->env.cpuid = deposit64(cpu->env.cpuid, CPU_PHYS_ADDR_SHIFT,
 611                                    CPU_PHYS_ADDR_BITS, cpu->env.core_id);
 612     }
 613 #endif
 614 }
 615
 616 static void get_feature(Object *obj, Visitor *v, const char *name,
 617                         void *opaque, Error **errp)
 618 {
 619     S390Feat feat = (S390Feat) (uintptr_t) opaque;
 620     S390CPU *cpu = S390_CPU(obj);
 621     bool value;
 622
 623     if (!cpu->model) {
 624         error_setg(errp, "Details about the host CPU model are not available, "
 625                          "features cannot be queried.");
 626         return;
 627     }
 628
 629     value = test_bit(feat, cpu->model->features);
 630     visit_type_bool(v, name, &value, errp);
 631 }
 632
 633 static void set_feature(Object *obj, Visitor *v, const char *name,
 634                         void *opaque, Error **errp)
 635 {
 636     S390Feat feat = (S390Feat) (uintptr_t) opaque;
 637     DeviceState *dev = DEVICE(obj);
 638     S390CPU *cpu = S390_CPU(obj);
 639     bool value;
 640
 641     if (dev->realized) {
 642         error_setg(errp, "Attempt to set property '%s' on '%s' after "
 643                    "it was realized", name, object_get_typename(obj));
 644         return;
 645     } else if (!cpu->model) {
 646         error_setg(errp, "Details about the host CPU model are not available, "
 647                          "features cannot be changed.");
 648         return;
 649     }
 650
 651     if (!visit_type_bool(v, name, &value, errp)) {
 652         return;
 653     }
 654     if (value) {
 655         if (!test_bit(feat, cpu->model->def->full_feat)) {
 656             error_setg(errp, "Feature '%s' is not available for CPU model '%s',"
 657                        " it was introduced with later models.",
 658                        name, cpu->model->def->name);
 659             return;
 660         }
 661         set_bit(feat, cpu->model->features);
 662     } else {
 663         clear_bit(feat, cpu->model->features);
 664     }
 665 }
 666
 667 static void get_feature_group(Object *obj, Visitor *v, const char *name,
 668                               void *opaque, Error **errp)
 669 {
 670     S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque;
 671     const S390FeatGroupDef *def = s390_feat_group_def(group);
 672     S390CPU *cpu = S390_CPU(obj);
 673     S390FeatBitmap tmp;
 674     bool value;
 675
 676     if (!cpu->model) {
 677         error_setg(errp, "Details about the host CPU model are not available, "
 678                          "features cannot be queried.");
 679         return;
 680     }
 681
 682     /* a group is enabled if all features are enabled */
 683     bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX);
 684     value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX);
 685     visit_type_bool(v, name, &value, errp);
 686 }
 687
 688 static void set_feature_group(Object *obj, Visitor *v, const char *name,
 689                               void *opaque, Error **errp)
 690 {
 691     S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque;
 692     const S390FeatGroupDef *def = s390_feat_group_def(group);
 693     DeviceState *dev = DEVICE(obj);
 694     S390CPU *cpu = S390_CPU(obj);
 695     bool value;
 696
 697     if (dev->realized) {
 698         error_setg(errp, "Attempt to set property '%s' on '%s' after "
 699                    "it was realized", name, object_get_typename(obj));
 700         return;
 701     } else if (!cpu->model) {
 702         error_setg(errp, "Details about the host CPU model are not available, "
 703                          "features cannot be changed.");
 704         return;
 705     }
 706
 707     if (!visit_type_bool(v, name, &value, errp)) {
 708         return;
 709     }
 710     if (value) {
 711         /* groups are added in one shot, so an intersect is sufficient */
 712         if (!bitmap_intersects(def->feat, cpu->model->def->full_feat,
 713                                S390_FEAT_MAX)) {
 714             error_setg(errp, "Group '%s' is not available for CPU model '%s',"
 715                        " it was introduced with later models.",
 716                        name, cpu->model->def->name);
 717             return;
 718         }
 719         bitmap_or(cpu->model->features, cpu->model->features, def->feat,
 720                   S390_FEAT_MAX);
 721     } else {
 722         bitmap_andnot(cpu->model->features, cpu->model->features, def->feat,
 723                       S390_FEAT_MAX);
 724     }
 725 }
 726
 727 static void s390_cpu_model_initfn(Object *obj)
 728 {
 729     S390CPU *cpu = S390_CPU(obj);
 730     S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu);
 731
 732     cpu->model = g_malloc0(sizeof(*cpu->model));
 733     /* copy the model, so we can modify it */
 734     cpu->model->def = xcc->cpu_def;
 735     if (xcc->is_static) {
 736         /* base model - features will never change */
 737         bitmap_copy(cpu->model->features, cpu->model->def->base_feat,
 738                     S390_FEAT_MAX);
 739     } else {
 740         /* latest model - features can change */
 741         bitmap_copy(cpu->model->features,
 742                     cpu->model->def->default_feat, S390_FEAT_MAX);
 743     }
 744 }
 745
 746 static S390CPUModel s390_qemu_cpu_model;
 747
 748 /* Set the qemu CPU model (on machine initialization). Must not be called
 749  * once CPUs have been created.
 750  */
 751 void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga,
 752                              const S390FeatInit feat_init)
 753 {
 754     const S390CPUDef *def = s390_find_cpu_def(type, gen, ec_ga, NULL);
 755
 756     g_assert(def);
 757     g_assert(QTAILQ_EMPTY_RCU(&cpus));
 758
 759     /* build the CPU model */
 760     s390_qemu_cpu_model.def = def;
 761     bitmap_zero(s390_qemu_cpu_model.features, S390_FEAT_MAX);
 762     s390_init_feat_bitmap(feat_init, s390_qemu_cpu_model.features);
 763 }
 764
 765 static void s390_qemu_cpu_model_initfn(Object *obj)
 766 {
 767     S390CPU *cpu = S390_CPU(obj);
 768
 769     cpu->model = g_malloc0(sizeof(*cpu->model));
 770     /* copy the CPU model so we can modify it */
 771     memcpy(cpu->model, &s390_qemu_cpu_model, sizeof(*cpu->model));
 772 }
 773
 774 static void s390_max_cpu_model_initfn(Object *obj)
 775 {
 776     const S390CPUModel *max_model;
 777     S390CPU *cpu = S390_CPU(obj);
 778     Error *local_err = NULL;
 779
 780     if (kvm_enabled() && !kvm_s390_cpu_models_supported()) {
 781         /* "max" and "host" always work, even without CPU model support */
 782         return;
 783     }
 784
 785     max_model = get_max_cpu_model(&local_err);
 786     if (local_err) {
 787         /* we expect errors only under KVM, when actually querying the kernel */
 788         g_assert(kvm_enabled());
 789         error_report_err(local_err);
 790         /* fallback to unsupported CPU models */
 791         return;
 792     }
 793
 794     cpu->model = g_new(S390CPUModel, 1);
 795     /* copy the CPU model so we can modify it */
 796     memcpy(cpu->model, max_model, sizeof(*cpu->model));
 797 }
 798
 799 static void s390_cpu_model_finalize(Object *obj)
 800 {
 801     S390CPU *cpu = S390_CPU(obj);
 802
 803     g_free(cpu->model);
 804     cpu->model = NULL;
 805 }
 806
 807 static bool get_is_migration_safe(Object *obj, Error **errp)
 808 {
 809     return S390_CPU_GET_CLASS(obj)->is_migration_safe;
 810 }
 811
 812 static bool get_is_static(Object *obj, Error **errp)
 813 {
 814     return S390_CPU_GET_CLASS(obj)->is_static;
 815 }
 816
 817 static char *get_description(Object *obj, Error **errp)
 818 {
 819     return g_strdup(S390_CPU_GET_CLASS(obj)->desc);
 820 }
 821
 822 void s390_cpu_model_class_register_props(ObjectClass *oc)
 823 {
 824     S390FeatGroup group;
 825     S390Feat feat;
 826
 827     object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe,
 828                                    NULL);
 829     object_class_property_add_bool(oc, "static", get_is_static,
 830                                    NULL);
 831     object_class_property_add_str(oc, "description", get_description, NULL);
 832
 833     for (feat = 0; feat < S390_FEAT_MAX; feat++) {
 834         const S390FeatDef *def = s390_feat_def(feat);
 835         object_class_property_add(oc, def->name, "bool", get_feature,
 836                                   set_feature, NULL, (void *) feat);
 837         object_class_property_set_description(oc, def->name, def->desc);
 838     }
 839     for (group = 0; group < S390_FEAT_GROUP_MAX; group++) {
 840         const S390FeatGroupDef *def = s390_feat_group_def(group);
 841         object_class_property_add(oc, def->name, "bool", get_feature_group,
 842                                   set_feature_group, NULL, (void *) group);
 843         object_class_property_set_description(oc, def->name, def->desc);
 844     }
 845 }
 846
 847 #ifdef CONFIG_KVM
 848 static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data)
 849 {
 850     S390CPUClass *xcc = S390_CPU_CLASS(oc);
 851
 852     xcc->kvm_required = true;
 853     xcc->desc = "KVM only: All recognized features";
 854 }
 855 #endif
 856
 857 static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data)
 858 {
 859     S390CPUClass *xcc = S390_CPU_CLASS(oc);
 860
 861     /* all base models are migration safe */
 862     xcc->cpu_def = (const S390CPUDef *) data;
 863     xcc->is_migration_safe = true;
 864     xcc->is_static = true;
 865     xcc->desc = xcc->cpu_def->desc;
 866 }
 867
 868 static void s390_cpu_model_class_init(ObjectClass *oc, void *data)
 869 {
 870     S390CPUClass *xcc = S390_CPU_CLASS(oc);
 871
 872     /* model that can change between QEMU versions */
 873     xcc->cpu_def = (const S390CPUDef *) data;
 874     xcc->is_migration_safe = true;
 875     xcc->desc = xcc->cpu_def->desc;
 876 }
 877
 878 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data)
 879 {
 880     S390CPUClass *xcc = S390_CPU_CLASS(oc);
 881
 882     xcc->is_migration_safe = true;
 883     xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s",
 884                                 qemu_hw_version());
 885 }
 886
 887 static void s390_max_cpu_model_class_init(ObjectClass *oc, void *data)
 888 {
 889     S390CPUClass *xcc = S390_CPU_CLASS(oc);
 890
 891     /*
 892      * The "max" model is neither static nor migration safe. Under KVM
 893      * it represents the "host" model. Under TCG it represents the "qemu" CPU
 894      * model of the latest QEMU machine.
 895      */
 896     xcc->desc =
 897         "Enables all features supported by the accelerator in the current host";
 898 }
 899
 900 /* Generate type name for a cpu model. Caller has to free the string. */
 901 static char *s390_cpu_type_name(const char *model_name)
 902 {
 903     return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name);
 904 }
 905
 906 /* Generate type name for a base cpu model. Caller has to free the string. */
 907 static char *s390_base_cpu_type_name(const char *model_name)
 908 {
 909     return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name);
 910 }
 911
 912 ObjectClass *s390_cpu_class_by_name(const char *name)
 913 {
 914     char *typename = s390_cpu_type_name(name);
 915     ObjectClass *oc;
 916
 917     oc = object_class_by_name(typename);
 918     g_free(typename);
 919     return oc;
 920 }
 921
 922 static const TypeInfo qemu_s390_cpu_type_info = {
 923     .name = S390_CPU_TYPE_NAME("qemu"),
 924     .parent = TYPE_S390_CPU,
 925     .instance_init = s390_qemu_cpu_model_initfn,
 926     .instance_finalize = s390_cpu_model_finalize,
 927     .class_init = s390_qemu_cpu_model_class_init,
 928 };
 929
 930 static const TypeInfo max_s390_cpu_type_info = {
 931     .name = S390_CPU_TYPE_NAME("max"),
 932     .parent = TYPE_S390_CPU,
 933     .instance_init = s390_max_cpu_model_initfn,
 934     .instance_finalize = s390_cpu_model_finalize,
 935     .class_init = s390_max_cpu_model_class_init,
 936 };
 937
 938 #ifdef CONFIG_KVM
 939 static const TypeInfo host_s390_cpu_type_info = {
 940     .name = S390_CPU_TYPE_NAME("host"),
 941     .parent = S390_CPU_TYPE_NAME("max"),
 942     .class_init = s390_host_cpu_model_class_init,
 943 };
 944 #endif
 945
 946 static void init_ignored_base_feat(void)
 947 {
 948     static const int feats[] = {
 949          /* MSA subfunctions that could not be available on certain machines */
 950          S390_FEAT_KMAC_DEA,
 951          S390_FEAT_KMAC_TDEA_128,
 952          S390_FEAT_KMAC_TDEA_192,
 953          S390_FEAT_KMC_DEA,
 954          S390_FEAT_KMC_TDEA_128,
 955          S390_FEAT_KMC_TDEA_192,
 956          S390_FEAT_KM_DEA,
 957          S390_FEAT_KM_TDEA_128,
 958          S390_FEAT_KM_TDEA_192,
 959          S390_FEAT_KIMD_SHA_1,
 960          S390_FEAT_KLMD_SHA_1,
 961          /* CSSKE is deprecated on newer generations */
 962          S390_FEAT_CONDITIONAL_SSKE,
 963     };
 964     int i;
 965
 966     for (i = 0; i < ARRAY_SIZE(feats); i++) {
 967         set_bit(feats[i], ignored_base_feat);
 968     }
 969 }
 970
 971 static void register_types(void)
 972 {
 973     static const S390FeatInit qemu_max_init = { S390_FEAT_LIST_QEMU_MAX };
 974     int i;
 975
 976     init_ignored_base_feat();
 977
 978     /* init all bitmaps from gnerated data initially */
 979     s390_init_feat_bitmap(qemu_max_init, qemu_max_cpu_feat);
 980     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
 981         s390_init_feat_bitmap(s390_cpu_defs[i].base_init,
 982                               s390_cpu_defs[i].base_feat);
 983         s390_init_feat_bitmap(s390_cpu_defs[i].default_init,
 984                               s390_cpu_defs[i].default_feat);
 985         s390_init_feat_bitmap(s390_cpu_defs[i].full_init,
 986                               s390_cpu_defs[i].full_feat);
 987     }
 988
 989     /* initialize the qemu model with the maximum definition ("max" model) */
 990     s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN,
 991                             QEMU_MAX_CPU_EC_GA, qemu_max_init);
 992
 993     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
 994         char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name);
 995         TypeInfo ti_base = {
 996             .name = base_name,
 997             .parent = TYPE_S390_CPU,
 998             .instance_init = s390_cpu_model_initfn,
 999             .instance_finalize = s390_cpu_model_finalize,
1000             .class_init = s390_base_cpu_model_class_init,
1001             .class_data = (void *) &s390_cpu_defs[i],
1002         };
1003         char *name = s390_cpu_type_name(s390_cpu_defs[i].name);
1004         TypeInfo ti = {
1005             .name = name,
1006             .parent = TYPE_S390_CPU,
1007             .instance_init = s390_cpu_model_initfn,
1008             .instance_finalize = s390_cpu_model_finalize,
1009             .class_init = s390_cpu_model_class_init,
1010             .class_data = (void *) &s390_cpu_defs[i],
1011         };
1012
1013         type_register_static(&ti_base);
1014         type_register_static(&ti);
1015         g_free(base_name);
1016         g_free(name);
1017     }
1018
1019     type_register_static(&qemu_s390_cpu_type_info);
1020     type_register_static(&max_s390_cpu_type_info);
1021 #ifdef CONFIG_KVM
1022     type_register_static(&host_s390_cpu_type_info);
1023 #endif
1024 }
1025
1026 type_init(register_types)