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     S390CPU *cpu = S390_CPU(first_cpu);
 200
 201     if (!cpu || !cpu->model) {
 202         return;
 203     }
 204     s390_fill_feat_block(cpu->model->features, type, data);
 205 }
 206
 207 bool s390_has_feat(S390Feat feat)
 208 {
 209     static S390CPU *cpu;
 210
 211     if (!cpu) {
 212         cpu = S390_CPU(qemu_get_cpu(0));
 213     }
 214
 215     if (!cpu || !cpu->model) {
 216 #ifdef CONFIG_KVM
 217         if (kvm_enabled()) {
 218             if (feat == S390_FEAT_VECTOR) {
 219                 return kvm_check_extension(kvm_state,
 220                                            KVM_CAP_S390_VECTOR_REGISTERS);
 221             }
 222             if (feat == S390_FEAT_RUNTIME_INSTRUMENTATION) {
 223                 return kvm_s390_get_ri();
 224             }
 225             if (feat == S390_FEAT_MSA_EXT_3) {
 226                 return true;
 227             }
 228         }
 229 #endif
 230         if (feat == S390_FEAT_ZPCI) {
 231             return true;
 232         }
 233         return 0;
 234     }
 235
 236 #ifndef CONFIG_USER_ONLY
 237     if (s390_is_pv()) {
 238         switch (feat) {
 239         case S390_FEAT_DIAG_318:
 240         case S390_FEAT_HPMA2:
 241         case S390_FEAT_SIE_F2:
 242         case S390_FEAT_SIE_SKEY:
 243         case S390_FEAT_SIE_GPERE:
 244         case S390_FEAT_SIE_SIIF:
 245         case S390_FEAT_SIE_SIGPIF:
 246         case S390_FEAT_SIE_IB:
 247         case S390_FEAT_SIE_CEI:
 248         case S390_FEAT_SIE_KSS:
 249         case S390_FEAT_SIE_GSLS:
 250         case S390_FEAT_SIE_64BSCAO:
 251         case S390_FEAT_SIE_CMMA:
 252         case S390_FEAT_SIE_PFMFI:
 253         case S390_FEAT_SIE_IBS:
 254         case S390_FEAT_CONFIGURATION_TOPOLOGY:
 255             return false;
 256             break;
 257         default:
 258             break;
 259         }
 260     }
 261 #endif
 262     return test_bit(feat, cpu->model->features);
 263 }
 264
 265 uint8_t s390_get_gen_for_cpu_type(uint16_t type)
 266 {
 267     int i;
 268
 269     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
 270         if (s390_cpu_defs[i].type == type) {
 271             return s390_cpu_defs[i].gen;
 272         }
 273     }
 274     return 0;
 275 }
 276
 277 const S390CPUDef *s390_find_cpu_def(uint16_t type, uint8_t gen, uint8_t ec_ga,
 278                                     S390FeatBitmap features)
 279 {
 280     const S390CPUDef *last_compatible = NULL;
 281     const S390CPUDef *matching_cpu_type = NULL;
 282     int i;
 283
 284     if (!gen) {
 285         ec_ga = 0;
 286     }
 287     if (!gen && type) {
 288         gen = s390_get_gen_for_cpu_type(type);
 289     }
 290
 291     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
 292         const S390CPUDef *def = &s390_cpu_defs[i];
 293         S390FeatBitmap missing;
 294
 295         /* don't even try newer generations if we know the generation */
 296         if (gen) {
 297             if (def->gen > gen) {
 298                 break;
 299             } else if (def->gen == gen && ec_ga && def->ec_ga > ec_ga) {
 300                 break;
 301             }
 302         }
 303
 304         if (features) {
 305             /* see if the model satisfies the minimum features */
 306             bitmap_andnot(missing, def->base_feat, features, S390_FEAT_MAX);
 307             /*
 308              * Ignore certain features that are in the base model, but not
 309              * relevant for the search (esp. MSA subfunctions).
 310              */
 311             bitmap_andnot(missing, missing, ignored_base_feat, S390_FEAT_MAX);
 312             if (!bitmap_empty(missing, S390_FEAT_MAX)) {
 313                 break;
 314             }
 315         }
 316
 317         /* stop the search if we found the exact model */
 318         if (def->type == type && def->ec_ga == ec_ga) {
 319             return def;
 320         }
 321         /* remember if we've at least seen one with the same cpu type */
 322         if (def->type == type) {
 323             matching_cpu_type = def;
 324         }
 325         last_compatible = def;
 326     }
 327     /* prefer the model with the same cpu type, esp. don't take the BC for EC */
 328     if (matching_cpu_type) {
 329         return matching_cpu_type;
 330     }
 331     return last_compatible;
 332 }
 333
 334 static void s390_print_cpu_model_list_entry(gpointer data, gpointer user_data)
 335 {
 336     const S390CPUClass *scc = S390_CPU_CLASS((ObjectClass *)data);
 337     CPUClass *cc = CPU_CLASS(scc);
 338     char *name = g_strdup(object_class_get_name((ObjectClass *)data));
 339     g_autoptr(GString) details = g_string_new("");
 340
 341     if (scc->is_static) {
 342         g_string_append(details, "static, ");
 343     }
 344     if (scc->is_migration_safe) {
 345         g_string_append(details, "migration-safe, ");
 346     }
 347     if (cc->deprecation_note) {
 348         g_string_append(details, "deprecated, ");
 349     }
 350     if (details->len) {
 351         /* cull trailing ', ' */
 352         g_string_truncate(details, details->len - 2);
 353     }
 354
 355     /* strip off the -s390x-cpu */
 356     g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0;
 357     if (details->len) {
 358         qemu_printf("  %-15s %-35s (%s)\n", name, scc->desc, details->str);
 359     } else {
 360         qemu_printf("  %-15s %-35s\n", name, scc->desc);
 361     }
 362     g_free(name);
 363 }
 364
 365 static gint s390_cpu_list_compare(gconstpointer a, gconstpointer b)
 366 {
 367     const S390CPUClass *cc_a = S390_CPU_CLASS((ObjectClass *)a);
 368     const S390CPUClass *cc_b = S390_CPU_CLASS((ObjectClass *)b);
 369     const char *name_a = object_class_get_name((ObjectClass *)a);
 370     const char *name_b = object_class_get_name((ObjectClass *)b);
 371
 372     /*
 373      * Move qemu, host and max to the top of the list, qemu first, host second,
 374      * max third.
 375      */
 376     if (name_a[0] == 'q') {
 377         return -1;
 378     } else if (name_b[0] == 'q') {
 379         return 1;
 380     } else if (name_a[0] == 'h') {
 381         return -1;
 382     } else if (name_b[0] == 'h') {
 383         return 1;
 384     } else if (name_a[0] == 'm') {
 385         return -1;
 386     } else if (name_b[0] == 'm') {
 387         return 1;
 388     }
 389
 390     /* keep the same order we have in our table (sorted by release date) */
 391     if (cc_a->cpu_def != cc_b->cpu_def) {
 392         return cc_a->cpu_def - cc_b->cpu_def;
 393     }
 394
 395     /* exact same definition - list base model first */
 396     return cc_a->is_static ? -1 : 1;
 397 }
 398
 399 void s390_cpu_list(void)
 400 {
 401     S390FeatGroup group;
 402     S390Feat feat;
 403     GSList *list;
 404
 405     qemu_printf("Available CPUs:\n");
 406     list = object_class_get_list(TYPE_S390_CPU, false);
 407     list = g_slist_sort(list, s390_cpu_list_compare);
 408     g_slist_foreach(list, s390_print_cpu_model_list_entry, NULL);
 409     g_slist_free(list);
 410
 411     qemu_printf("\nRecognized feature flags:\n");
 412     for (feat = 0; feat < S390_FEAT_MAX; feat++) {
 413         const S390FeatDef *def = s390_feat_def(feat);
 414
 415         qemu_printf("  %-20s %s\n", def->name, def->desc);
 416     }
 417
 418     qemu_printf("\nRecognized feature groups:\n");
 419     for (group = 0; group < S390_FEAT_GROUP_MAX; group++) {
 420         const S390FeatGroupDef *def = s390_feat_group_def(group);
 421
 422         qemu_printf("  %-20s %s\n", def->name, def->desc);
 423     }
 424 }
 425
 426 static void check_consistency(const S390CPUModel *model)
 427 {
 428     static int dep[][2] = {
 429         { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH },
 430         { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH },
 431         { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH },
 432         { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT },
 433         { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH},
 434         { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT },
 435         { S390_FEAT_DFP_FAST, S390_FEAT_DFP },
 436         { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 },
 437         { S390_FEAT_EDAT_2, S390_FEAT_EDAT},
 438         { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 },
 439         { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 },
 440         { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 },
 441         { S390_FEAT_SIE_CMMA, S390_FEAT_CMM },
 442         { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS },
 443         { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT },
 444         { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 },
 445         { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_3 },
 446         { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_4 },
 447         { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING },
 448         { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR },
 449         { S390_FEAT_VECTOR_PACKED_DECIMAL_ENH, S390_FEAT_VECTOR_PACKED_DECIMAL },
 450         { S390_FEAT_VECTOR_PACKED_DECIMAL_ENH2, S390_FEAT_VECTOR_PACKED_DECIMAL_ENH },
 451         { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR },
 452         { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 },
 453         { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP },
 454         { S390_FEAT_CMM_NT, S390_FEAT_CMM },
 455         { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 },
 456         { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST },
 457         { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING },
 458         { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 },
 459         { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA },
 460         { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA },
 461         { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA },
 462         { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA },
 463         { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA },
 464         { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA },
 465         { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA },
 466         { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA },
 467         { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA },
 468         { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA },
 469         { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA },
 470         { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA },
 471         { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 },
 472         { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 },
 473         { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 },
 474         { S390_FEAT_AP_QUERY_CONFIG_INFO, S390_FEAT_AP },
 475         { S390_FEAT_AP_FACILITIES_TEST, S390_FEAT_AP },
 476         { S390_FEAT_PTFF_QSIE, S390_FEAT_MULTIPLE_EPOCH },
 477         { S390_FEAT_PTFF_QTOUE, S390_FEAT_MULTIPLE_EPOCH },
 478         { S390_FEAT_PTFF_STOE, S390_FEAT_MULTIPLE_EPOCH },
 479         { S390_FEAT_PTFF_STOUE, S390_FEAT_MULTIPLE_EPOCH },
 480         { S390_FEAT_AP_QUEUE_INTERRUPT_CONTROL, S390_FEAT_AP },
 481         { S390_FEAT_DIAG_318, S390_FEAT_EXTENDED_LENGTH_SCCB },
 482         { S390_FEAT_NNPA, S390_FEAT_VECTOR },
 483         { S390_FEAT_RDP, S390_FEAT_LOCAL_TLB_CLEARING },
 484         { S390_FEAT_UV_FEAT_AP, S390_FEAT_AP },
 485         { S390_FEAT_UV_FEAT_AP_INTR, S390_FEAT_UV_FEAT_AP },
 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_compat_model_failed(Error **errp,
 505                                       const S390CPUModel *max_model,
 506                                       const char *msg)
 507 {
 508     error_setg(errp, "%s. Maximum supported model in the current configuration: \'%s\'",
 509                msg, max_model->def->name);
 510     error_append_hint(errp, "Consider a different accelerator, try \"-accel help\"\n");
 511     return;
 512 }
 513
 514 static bool check_compatibility(const S390CPUModel *max_model,
 515                                 const S390CPUModel *model, Error **errp)
 516 {
 517     ERRP_GUARD();
 518     S390FeatBitmap missing;
 519
 520     if (model->def->gen > max_model->def->gen) {
 521         check_compat_model_failed(errp, max_model, "Selected CPU generation is too new");
 522         return false;
 523     } else if (model->def->gen == max_model->def->gen &&
 524                model->def->ec_ga > max_model->def->ec_ga) {
 525         check_compat_model_failed(errp, max_model, "Selected CPU GA level is too new");
 526         return false;
 527     }
 528
 529 #ifndef CONFIG_USER_ONLY
 530     if (only_migratable && test_bit(S390_FEAT_UNPACK, model->features)) {
 531         error_setg(errp, "The unpack facility is not compatible with "
 532                    "the --only-migratable option. You must remove either "
 533                    "the 'unpack' facility or the --only-migratable option");
 534         return false;
 535     }
 536 #endif
 537
 538     /* detect the missing features to properly report them */
 539     bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX);
 540     if (bitmap_empty(missing, S390_FEAT_MAX)) {
 541         return true;
 542     }
 543
 544     error_setg(errp, " ");
 545     s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat);
 546     error_prepend(errp, "Some features requested in the CPU model are not "
 547                   "available in the current configuration: ");
 548     error_append_hint(errp,
 549                       "Consider a different accelerator, QEMU, or kernel version\n");
 550     return false;
 551 }
 552
 553 S390CPUModel *get_max_cpu_model(Error **errp)
 554 {
 555     static S390CPUModel max_model;
 556     static bool cached;
 557
 558     if (cached) {
 559         return &max_model;
 560     }
 561
 562     if (kvm_enabled()) {
 563         if (!kvm_s390_get_host_cpu_model(&max_model, errp)) {
 564             return NULL;
 565         }
 566     } else {
 567         max_model.def = s390_find_cpu_def(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN,
 568                                           QEMU_MAX_CPU_EC_GA, NULL);
 569         bitmap_copy(max_model.features, qemu_max_cpu_feat, S390_FEAT_MAX);
 570     }
 571     cached = true;
 572     return &max_model;
 573 }
 574
 575 void s390_realize_cpu_model(CPUState *cs, Error **errp)
 576 {
 577     ERRP_GUARD();
 578     S390CPUClass *xcc = S390_CPU_GET_CLASS(cs);
 579     S390CPU *cpu = S390_CPU(cs);
 580     const S390CPUModel *max_model;
 581
 582     if (xcc->kvm_required && !kvm_enabled()) {
 583         error_setg(errp, "CPU definition requires KVM");
 584         return;
 585     }
 586
 587     if (!cpu->model) {
 588         /* no host model support -> perform compatibility stuff */
 589         apply_cpu_model(NULL, errp);
 590         return;
 591     }
 592
 593     max_model = get_max_cpu_model(errp);
 594     if (!max_model) {
 595         error_prepend(errp, "CPU models are not available: ");
 596         return;
 597     }
 598
 599     /* copy over properties that can vary */
 600     cpu->model->lowest_ibc = max_model->lowest_ibc;
 601     cpu->model->cpu_id = max_model->cpu_id;
 602     cpu->model->cpu_id_format = max_model->cpu_id_format;
 603     cpu->model->cpu_ver = max_model->cpu_ver;
 604
 605     check_consistency(cpu->model);
 606     if (!check_compatibility(max_model, cpu->model, errp)) {
 607         return;
 608     }
 609
 610     apply_cpu_model(cpu->model, errp);
 611
 612 #if !defined(CONFIG_USER_ONLY)
 613     cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model);
 614     if (tcg_enabled()) {
 615         cpu->env.cpuid = deposit64(cpu->env.cpuid, CPU_PHYS_ADDR_SHIFT,
 616                                    CPU_PHYS_ADDR_BITS, cpu->env.core_id);
 617     }
 618 #endif
 619 }
 620
 621 static void get_feature(Object *obj, Visitor *v, const char *name,
 622                         void *opaque, Error **errp)
 623 {
 624     S390Feat feat = (S390Feat) (uintptr_t) opaque;
 625     S390CPU *cpu = S390_CPU(obj);
 626     bool value;
 627
 628     if (!cpu->model) {
 629         error_setg(errp, "Details about the host CPU model are not available, "
 630                          "features cannot be queried.");
 631         return;
 632     }
 633
 634     value = test_bit(feat, cpu->model->features);
 635     visit_type_bool(v, name, &value, errp);
 636 }
 637
 638 static void set_feature(Object *obj, Visitor *v, const char *name,
 639                         void *opaque, Error **errp)
 640 {
 641     S390Feat feat = (S390Feat) (uintptr_t) opaque;
 642     DeviceState *dev = DEVICE(obj);
 643     S390CPU *cpu = S390_CPU(obj);
 644     bool value;
 645
 646     if (dev->realized) {
 647         error_setg(errp, "Attempt to set property '%s' on '%s' after "
 648                    "it was realized", name, object_get_typename(obj));
 649         return;
 650     } else if (!cpu->model) {
 651         error_setg(errp, "Details about the host CPU model are not available, "
 652                          "features cannot be changed.");
 653         return;
 654     }
 655
 656     if (!visit_type_bool(v, name, &value, errp)) {
 657         return;
 658     }
 659     if (value) {
 660         if (!test_bit(feat, cpu->model->def->full_feat)) {
 661             error_setg(errp, "Feature '%s' is not available for CPU model '%s',"
 662                        " it was introduced with later models.",
 663                        name, cpu->model->def->name);
 664             return;
 665         }
 666         set_bit(feat, cpu->model->features);
 667     } else {
 668         clear_bit(feat, cpu->model->features);
 669     }
 670 }
 671
 672 static void get_feature_group(Object *obj, Visitor *v, const char *name,
 673                               void *opaque, Error **errp)
 674 {
 675     S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque;
 676     const S390FeatGroupDef *def = s390_feat_group_def(group);
 677     S390CPU *cpu = S390_CPU(obj);
 678     S390FeatBitmap tmp;
 679     bool value;
 680
 681     if (!cpu->model) {
 682         error_setg(errp, "Details about the host CPU model are not available, "
 683                          "features cannot be queried.");
 684         return;
 685     }
 686
 687     /* a group is enabled if all features are enabled */
 688     bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX);
 689     value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX);
 690     visit_type_bool(v, name, &value, errp);
 691 }
 692
 693 static void set_feature_group(Object *obj, Visitor *v, const char *name,
 694                               void *opaque, Error **errp)
 695 {
 696     S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque;
 697     const S390FeatGroupDef *def = s390_feat_group_def(group);
 698     DeviceState *dev = DEVICE(obj);
 699     S390CPU *cpu = S390_CPU(obj);
 700     bool value;
 701
 702     if (dev->realized) {
 703         error_setg(errp, "Attempt to set property '%s' on '%s' after "
 704                    "it was realized", name, object_get_typename(obj));
 705         return;
 706     } else if (!cpu->model) {
 707         error_setg(errp, "Details about the host CPU model are not available, "
 708                          "features cannot be changed.");
 709         return;
 710     }
 711
 712     if (!visit_type_bool(v, name, &value, errp)) {
 713         return;
 714     }
 715     if (value) {
 716         /* groups are added in one shot, so an intersect is sufficient */
 717         if (!bitmap_intersects(def->feat, cpu->model->def->full_feat,
 718                                S390_FEAT_MAX)) {
 719             error_setg(errp, "Group '%s' is not available for CPU model '%s',"
 720                        " it was introduced with later models.",
 721                        name, cpu->model->def->name);
 722             return;
 723         }
 724         bitmap_or(cpu->model->features, cpu->model->features, def->feat,
 725                   S390_FEAT_MAX);
 726     } else {
 727         bitmap_andnot(cpu->model->features, cpu->model->features, def->feat,
 728                       S390_FEAT_MAX);
 729     }
 730 }
 731
 732 static void s390_cpu_model_initfn(Object *obj)
 733 {
 734     S390CPU *cpu = S390_CPU(obj);
 735     S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu);
 736
 737     cpu->model = g_malloc0(sizeof(*cpu->model));
 738     /* copy the model, so we can modify it */
 739     cpu->model->def = xcc->cpu_def;
 740     if (xcc->is_static) {
 741         /* base model - features will never change */
 742         bitmap_copy(cpu->model->features, cpu->model->def->base_feat,
 743                     S390_FEAT_MAX);
 744     } else {
 745         /* latest model - features can change */
 746         bitmap_copy(cpu->model->features,
 747                     cpu->model->def->default_feat, S390_FEAT_MAX);
 748     }
 749 }
 750
 751 static S390CPUModel s390_qemu_cpu_model;
 752
 753 /* Set the qemu CPU model (on machine initialization). Must not be called
 754  * once CPUs have been created.
 755  */
 756 void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga,
 757                              const S390FeatInit feat_init)
 758 {
 759     const S390CPUDef *def = s390_find_cpu_def(type, gen, ec_ga, NULL);
 760
 761     g_assert(def);
 762     g_assert(QTAILQ_EMPTY_RCU(&cpus_queue));
 763
 764     /* build the CPU model */
 765     s390_qemu_cpu_model.def = def;
 766     bitmap_zero(s390_qemu_cpu_model.features, S390_FEAT_MAX);
 767     s390_init_feat_bitmap(feat_init, s390_qemu_cpu_model.features);
 768 }
 769
 770 static void s390_qemu_cpu_model_initfn(Object *obj)
 771 {
 772     S390CPU *cpu = S390_CPU(obj);
 773
 774     cpu->model = g_malloc0(sizeof(*cpu->model));
 775     /* copy the CPU model so we can modify it */
 776     memcpy(cpu->model, &s390_qemu_cpu_model, sizeof(*cpu->model));
 777 }
 778
 779 static void s390_max_cpu_model_initfn(Object *obj)
 780 {
 781     const S390CPUModel *max_model;
 782     S390CPU *cpu = S390_CPU(obj);
 783     Error *local_err = NULL;
 784
 785     if (kvm_enabled() && !kvm_s390_cpu_models_supported()) {
 786         /* "max" and "host" always work, even without CPU model support */
 787         return;
 788     }
 789
 790     max_model = get_max_cpu_model(&local_err);
 791     if (local_err) {
 792         /* we expect errors only under KVM, when actually querying the kernel */
 793         g_assert(kvm_enabled());
 794         error_report_err(local_err);
 795         /* fallback to unsupported CPU models */
 796         return;
 797     }
 798
 799     cpu->model = g_new(S390CPUModel, 1);
 800     /* copy the CPU model so we can modify it */
 801     memcpy(cpu->model, max_model, sizeof(*cpu->model));
 802 }
 803
 804 static void s390_cpu_model_finalize(Object *obj)
 805 {
 806     S390CPU *cpu = S390_CPU(obj);
 807
 808     g_free(cpu->model);
 809     cpu->model = NULL;
 810 }
 811
 812 static bool get_is_migration_safe(Object *obj, Error **errp)
 813 {
 814     return S390_CPU_GET_CLASS(obj)->is_migration_safe;
 815 }
 816
 817 static bool get_is_static(Object *obj, Error **errp)
 818 {
 819     return S390_CPU_GET_CLASS(obj)->is_static;
 820 }
 821
 822 static char *get_description(Object *obj, Error **errp)
 823 {
 824     return g_strdup(S390_CPU_GET_CLASS(obj)->desc);
 825 }
 826
 827 void s390_cpu_model_class_register_props(ObjectClass *oc)
 828 {
 829     S390FeatGroup group;
 830     S390Feat feat;
 831
 832     object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe,
 833                                    NULL);
 834     object_class_property_add_bool(oc, "static", get_is_static,
 835                                    NULL);
 836     object_class_property_add_str(oc, "description", get_description, NULL);
 837
 838     for (feat = 0; feat < S390_FEAT_MAX; feat++) {
 839         const S390FeatDef *def = s390_feat_def(feat);
 840         object_class_property_add(oc, def->name, "bool", get_feature,
 841                                   set_feature, NULL, (void *) feat);
 842         object_class_property_set_description(oc, def->name, def->desc);
 843     }
 844     for (group = 0; group < S390_FEAT_GROUP_MAX; group++) {
 845         const S390FeatGroupDef *def = s390_feat_group_def(group);
 846         object_class_property_add(oc, def->name, "bool", get_feature_group,
 847                                   set_feature_group, NULL, (void *) group);
 848         object_class_property_set_description(oc, def->name, def->desc);
 849     }
 850 }
 851
 852 #ifdef CONFIG_KVM
 853 static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data)
 854 {
 855     S390CPUClass *xcc = S390_CPU_CLASS(oc);
 856
 857     xcc->kvm_required = true;
 858     xcc->desc = "KVM only: All recognized features";
 859 }
 860 #endif
 861
 862 static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data)
 863 {
 864     S390CPUClass *xcc = S390_CPU_CLASS(oc);
 865
 866     /* all base models are migration safe */
 867     xcc->cpu_def = (const S390CPUDef *) data;
 868     xcc->is_migration_safe = true;
 869     xcc->is_static = true;
 870     xcc->desc = xcc->cpu_def->desc;
 871 }
 872
 873 static void s390_cpu_model_class_init(ObjectClass *oc, void *data)
 874 {
 875     S390CPUClass *xcc = S390_CPU_CLASS(oc);
 876
 877     /* model that can change between QEMU versions */
 878     xcc->cpu_def = (const S390CPUDef *) data;
 879     xcc->is_migration_safe = true;
 880     xcc->desc = xcc->cpu_def->desc;
 881 }
 882
 883 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data)
 884 {
 885     S390CPUClass *xcc = S390_CPU_CLASS(oc);
 886
 887     xcc->is_migration_safe = true;
 888     xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s",
 889                                 qemu_hw_version());
 890 }
 891
 892 static void s390_max_cpu_model_class_init(ObjectClass *oc, void *data)
 893 {
 894     S390CPUClass *xcc = S390_CPU_CLASS(oc);
 895
 896     /*
 897      * The "max" model is neither static nor migration safe. Under KVM
 898      * it represents the "host" model. Under TCG it represents the "qemu" CPU
 899      * model of the latest QEMU machine.
 900      */
 901     xcc->desc =
 902         "Enables all features supported by the accelerator in the current host";
 903 }
 904
 905 /* Generate type name for a cpu model. Caller has to free the string. */
 906 static char *s390_cpu_type_name(const char *model_name)
 907 {
 908     return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name);
 909 }
 910
 911 /* Generate type name for a base cpu model. Caller has to free the string. */
 912 static char *s390_base_cpu_type_name(const char *model_name)
 913 {
 914     return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name);
 915 }
 916
 917 ObjectClass *s390_cpu_class_by_name(const char *name)
 918 {
 919     char *typename = s390_cpu_type_name(name);
 920     ObjectClass *oc;
 921
 922     oc = object_class_by_name(typename);
 923     g_free(typename);
 924     return oc;
 925 }
 926
 927 static const TypeInfo qemu_s390_cpu_type_info = {
 928     .name = S390_CPU_TYPE_NAME("qemu"),
 929     .parent = TYPE_S390_CPU,
 930     .instance_init = s390_qemu_cpu_model_initfn,
 931     .instance_finalize = s390_cpu_model_finalize,
 932     .class_init = s390_qemu_cpu_model_class_init,
 933 };
 934
 935 static const TypeInfo max_s390_cpu_type_info = {
 936     .name = S390_CPU_TYPE_NAME("max"),
 937     .parent = TYPE_S390_CPU,
 938     .instance_init = s390_max_cpu_model_initfn,
 939     .instance_finalize = s390_cpu_model_finalize,
 940     .class_init = s390_max_cpu_model_class_init,
 941 };
 942
 943 #ifdef CONFIG_KVM
 944 static const TypeInfo host_s390_cpu_type_info = {
 945     .name = S390_CPU_TYPE_NAME("host"),
 946     .parent = S390_CPU_TYPE_NAME("max"),
 947     .class_init = s390_host_cpu_model_class_init,
 948 };
 949 #endif
 950
 951 static void init_ignored_base_feat(void)
 952 {
 953     static const int feats[] = {
 954          /* MSA subfunctions that could not be available on certain machines */
 955          S390_FEAT_KMAC_DEA,
 956          S390_FEAT_KMAC_TDEA_128,
 957          S390_FEAT_KMAC_TDEA_192,
 958          S390_FEAT_KMC_DEA,
 959          S390_FEAT_KMC_TDEA_128,
 960          S390_FEAT_KMC_TDEA_192,
 961          S390_FEAT_KM_DEA,
 962          S390_FEAT_KM_TDEA_128,
 963          S390_FEAT_KM_TDEA_192,
 964          S390_FEAT_KIMD_SHA_1,
 965          S390_FEAT_KLMD_SHA_1,
 966          /* CSSKE is deprecated on newer generations */
 967          S390_FEAT_CONDITIONAL_SSKE,
 968     };
 969     int i;
 970
 971     for (i = 0; i < ARRAY_SIZE(feats); i++) {
 972         set_bit(feats[i], ignored_base_feat);
 973     }
 974 }
 975
 976 static void register_types(void)
 977 {
 978     static const S390FeatInit qemu_max_init = { S390_FEAT_LIST_QEMU_MAX };
 979     int i;
 980
 981     init_ignored_base_feat();
 982
 983     /* init all bitmaps from generated data initially */
 984     s390_init_feat_bitmap(qemu_max_init, qemu_max_cpu_feat);
 985     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
 986         s390_init_feat_bitmap(s390_cpu_defs[i].base_init,
 987                               s390_cpu_defs[i].base_feat);
 988         s390_init_feat_bitmap(s390_cpu_defs[i].default_init,
 989                               s390_cpu_defs[i].default_feat);
 990         s390_init_feat_bitmap(s390_cpu_defs[i].full_init,
 991                               s390_cpu_defs[i].full_feat);
 992     }
 993
 994     /* initialize the qemu model with the maximum definition ("max" model) */
 995     s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN,
 996                             QEMU_MAX_CPU_EC_GA, qemu_max_init);
 997
 998     for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
 999         char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name);
1000         TypeInfo ti_base = {
1001             .name = base_name,
1002             .parent = TYPE_S390_CPU,
1003             .instance_init = s390_cpu_model_initfn,
1004             .instance_finalize = s390_cpu_model_finalize,
1005             .class_init = s390_base_cpu_model_class_init,
1006             .class_data = (void *) &s390_cpu_defs[i],
1007         };
1008         char *name = s390_cpu_type_name(s390_cpu_defs[i].name);
1009         TypeInfo ti = {
1010             .name = name,
1011             .parent = TYPE_S390_CPU,
1012             .instance_init = s390_cpu_model_initfn,
1013             .instance_finalize = s390_cpu_model_finalize,
1014             .class_init = s390_cpu_model_class_init,
1015             .class_data = (void *) &s390_cpu_defs[i],
1016         };
1017
1018         type_register_static(&ti_base);
1019         type_register_static(&ti);
1020         g_free(base_name);
1021         g_free(name);
1022     }
1023
1024     type_register_static(&qemu_s390_cpu_type_info);
1025     type_register_static(&max_s390_cpu_type_info);
1026 #ifdef CONFIG_KVM
1027     type_register_static(&host_s390_cpu_type_info);
1028 #endif
1029 }
1030
1031 type_init(register_types)