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 "qapi/visitor.h" 21 #include "qemu/module.h" 22 #include "qemu/hw-version.h" 23 #include "qemu/qemu-print.h" 24 #ifndef CONFIG_USER_ONLY 25 #include "sysemu/sysemu.h" 26 #endif 27 #include "hw/s390x/pv.h" 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 definition list in order of release. Up to generation 14 base features 45 * of a following release have been a superset of the previous release. With 46 * generation 15 one base feature and one optional feature have been deprecated. 47 */ 48 static S390CPUDef s390_cpu_defs[] = { 49 CPUDEF_INIT(0x2064, 7, 1, 38, 0x00000000U, "z900", "IBM zSeries 900 GA1"), 50 CPUDEF_INIT(0x2064, 7, 2, 38, 0x00000000U, "z900.2", "IBM zSeries 900 GA2"), 51 CPUDEF_INIT(0x2064, 7, 3, 38, 0x00000000U, "z900.3", "IBM zSeries 900 GA3"), 52 CPUDEF_INIT(0x2066, 7, 3, 38, 0x00000000U, "z800", "IBM zSeries 800 GA1"), 53 CPUDEF_INIT(0x2084, 8, 1, 38, 0x00000000U, "z990", "IBM zSeries 990 GA1"), 54 CPUDEF_INIT(0x2084, 8, 2, 38, 0x00000000U, "z990.2", "IBM zSeries 990 GA2"), 55 CPUDEF_INIT(0x2084, 8, 3, 38, 0x00000000U, "z990.3", "IBM zSeries 990 GA3"), 56 CPUDEF_INIT(0x2086, 8, 3, 38, 0x00000000U, "z890", "IBM zSeries 880 GA1"), 57 CPUDEF_INIT(0x2084, 8, 4, 38, 0x00000000U, "z990.4", "IBM zSeries 990 GA4"), 58 CPUDEF_INIT(0x2086, 8, 4, 38, 0x00000000U, "z890.2", "IBM zSeries 880 GA2"), 59 CPUDEF_INIT(0x2084, 8, 5, 38, 0x00000000U, "z990.5", "IBM zSeries 990 GA5"), 60 CPUDEF_INIT(0x2086, 8, 5, 38, 0x00000000U, "z890.3", "IBM zSeries 880 GA3"), 61 CPUDEF_INIT(0x2094, 9, 1, 40, 0x00000000U, "z9EC", "IBM System z9 EC GA1"), 62 CPUDEF_INIT(0x2094, 9, 2, 40, 0x00000000U, "z9EC.2", "IBM System z9 EC GA2"), 63 CPUDEF_INIT(0x2096, 9, 2, 40, 0x00000000U, "z9BC", "IBM System z9 BC GA1"), 64 CPUDEF_INIT(0x2094, 9, 3, 40, 0x00000000U, "z9EC.3", "IBM System z9 EC GA3"), 65 CPUDEF_INIT(0x2096, 9, 3, 40, 0x00000000U, "z9BC.2", "IBM System z9 BC GA2"), 66 CPUDEF_INIT(0x2097, 10, 1, 43, 0x00000000U, "z10EC", "IBM System z10 EC GA1"), 67 CPUDEF_INIT(0x2097, 10, 2, 43, 0x00000000U, "z10EC.2", "IBM System z10 EC GA2"), 68 CPUDEF_INIT(0x2098, 10, 2, 43, 0x00000000U, "z10BC", "IBM System z10 BC GA1"), 69 CPUDEF_INIT(0x2097, 10, 3, 43, 0x00000000U, "z10EC.3", "IBM System z10 EC GA3"), 70 CPUDEF_INIT(0x2098, 10, 3, 43, 0x00000000U, "z10BC.2", "IBM System z10 BC GA2"), 71 CPUDEF_INIT(0x2817, 11, 1, 44, 0x08000000U, "z196", "IBM zEnterprise 196 GA1"), 72 CPUDEF_INIT(0x2817, 11, 2, 44, 0x08000000U, "z196.2", "IBM zEnterprise 196 GA2"), 73 CPUDEF_INIT(0x2818, 11, 2, 44, 0x08000000U, "z114", "IBM zEnterprise 114 GA1"), 74 CPUDEF_INIT(0x2827, 12, 1, 44, 0x08000000U, "zEC12", "IBM zEnterprise EC12 GA1"), 75 CPUDEF_INIT(0x2827, 12, 2, 44, 0x08000000U, "zEC12.2", "IBM zEnterprise EC12 GA2"), 76 CPUDEF_INIT(0x2828, 12, 2, 44, 0x08000000U, "zBC12", "IBM zEnterprise BC12 GA1"), 77 CPUDEF_INIT(0x2964, 13, 1, 47, 0x08000000U, "z13", "IBM z13 GA1"), 78 CPUDEF_INIT(0x2964, 13, 2, 47, 0x08000000U, "z13.2", "IBM z13 GA2"), 79 CPUDEF_INIT(0x2965, 13, 2, 47, 0x08000000U, "z13s", "IBM z13s GA1"), 80 CPUDEF_INIT(0x3906, 14, 1, 47, 0x08000000U, "z14", "IBM z14 GA1"), 81 CPUDEF_INIT(0x3906, 14, 2, 47, 0x08000000U, "z14.2", "IBM z14 GA2"), 82 CPUDEF_INIT(0x3907, 14, 1, 47, 0x08000000U, "z14ZR1", "IBM z14 Model ZR1 GA1"), 83 CPUDEF_INIT(0x8561, 15, 1, 47, 0x08000000U, "gen15a", "IBM z15 T01 GA1"), 84 CPUDEF_INIT(0x8562, 15, 1, 47, 0x08000000U, "gen15b", "IBM z15 T02 GA1"), 85 CPUDEF_INIT(0x3931, 16, 1, 47, 0x08000000U, "gen16a", "IBM 3931 GA1"), 86 CPUDEF_INIT(0x3932, 16, 1, 47, 0x08000000U, "gen16b", "IBM 3932 GA1"), 87 }; 88 89 #define QEMU_MAX_CPU_TYPE 0x8561 90 #define QEMU_MAX_CPU_GEN 15 91 #define QEMU_MAX_CPU_EC_GA 1 92 static const S390FeatInit qemu_max_cpu_feat_init = { S390_FEAT_LIST_QEMU_MAX }; 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 if (s390_is_pv()) { 241 switch (feat) { 242 case S390_FEAT_DIAG_318: 243 case S390_FEAT_HPMA2: 244 case S390_FEAT_SIE_F2: 245 case S390_FEAT_SIE_SKEY: 246 case S390_FEAT_SIE_GPERE: 247 case S390_FEAT_SIE_SIIF: 248 case S390_FEAT_SIE_SIGPIF: 249 case S390_FEAT_SIE_IB: 250 case S390_FEAT_SIE_CEI: 251 case S390_FEAT_SIE_KSS: 252 case S390_FEAT_SIE_GSLS: 253 case S390_FEAT_SIE_64BSCAO: 254 case S390_FEAT_SIE_CMMA: 255 case S390_FEAT_SIE_PFMFI: 256 case S390_FEAT_SIE_IBS: 257 return false; 258 break; 259 default: 260 break; 261 } 262 } 263 return test_bit(feat, cpu->model->features); 264 } 265 266 uint8_t s390_get_gen_for_cpu_type(uint16_t type) 267 { 268 int i; 269 270 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 271 if (s390_cpu_defs[i].type == type) { 272 return s390_cpu_defs[i].gen; 273 } 274 } 275 return 0; 276 } 277 278 const S390CPUDef *s390_find_cpu_def(uint16_t type, uint8_t gen, uint8_t ec_ga, 279 S390FeatBitmap features) 280 { 281 const S390CPUDef *last_compatible = NULL; 282 const S390CPUDef *matching_cpu_type = NULL; 283 int i; 284 285 if (!gen) { 286 ec_ga = 0; 287 } 288 if (!gen && type) { 289 gen = s390_get_gen_for_cpu_type(type); 290 } 291 292 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 293 const S390CPUDef *def = &s390_cpu_defs[i]; 294 S390FeatBitmap missing; 295 296 /* don't even try newer generations if we know the generation */ 297 if (gen) { 298 if (def->gen > gen) { 299 break; 300 } else if (def->gen == gen && ec_ga && def->ec_ga > ec_ga) { 301 break; 302 } 303 } 304 305 if (features) { 306 /* see if the model satisfies the minimum features */ 307 bitmap_andnot(missing, def->base_feat, features, S390_FEAT_MAX); 308 /* 309 * Ignore certain features that are in the base model, but not 310 * relevant for the search (esp. MSA subfunctions). 311 */ 312 bitmap_andnot(missing, missing, ignored_base_feat, S390_FEAT_MAX); 313 if (!bitmap_empty(missing, S390_FEAT_MAX)) { 314 break; 315 } 316 } 317 318 /* stop the search if we found the exact model */ 319 if (def->type == type && def->ec_ga == ec_ga) { 320 return def; 321 } 322 /* remember if we've at least seen one with the same cpu type */ 323 if (def->type == type) { 324 matching_cpu_type = def; 325 } 326 last_compatible = def; 327 } 328 /* prefer the model with the same cpu type, esp. don't take the BC for EC */ 329 if (matching_cpu_type) { 330 return matching_cpu_type; 331 } 332 return last_compatible; 333 } 334 335 static void s390_print_cpu_model_list_entry(gpointer data, gpointer user_data) 336 { 337 const S390CPUClass *scc = S390_CPU_CLASS((ObjectClass *)data); 338 char *name = g_strdup(object_class_get_name((ObjectClass *)data)); 339 const char *details = ""; 340 341 if (scc->is_static) { 342 details = "(static, migration-safe)"; 343 } else if (scc->is_migration_safe) { 344 details = "(migration-safe)"; 345 } 346 347 /* strip off the -s390x-cpu */ 348 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; 349 qemu_printf("s390 %-15s %-35s %s\n", name, scc->desc, details); 350 g_free(name); 351 } 352 353 static gint s390_cpu_list_compare(gconstpointer a, gconstpointer b) 354 { 355 const S390CPUClass *cc_a = S390_CPU_CLASS((ObjectClass *)a); 356 const S390CPUClass *cc_b = S390_CPU_CLASS((ObjectClass *)b); 357 const char *name_a = object_class_get_name((ObjectClass *)a); 358 const char *name_b = object_class_get_name((ObjectClass *)b); 359 360 /* 361 * Move qemu, host and max to the top of the list, qemu first, host second, 362 * max third. 363 */ 364 if (name_a[0] == 'q') { 365 return -1; 366 } else if (name_b[0] == 'q') { 367 return 1; 368 } else if (name_a[0] == 'h') { 369 return -1; 370 } else if (name_b[0] == 'h') { 371 return 1; 372 } else if (name_a[0] == 'm') { 373 return -1; 374 } else if (name_b[0] == 'm') { 375 return 1; 376 } 377 378 /* keep the same order we have in our table (sorted by release date) */ 379 if (cc_a->cpu_def != cc_b->cpu_def) { 380 return cc_a->cpu_def - cc_b->cpu_def; 381 } 382 383 /* exact same definition - list base model first */ 384 return cc_a->is_static ? -1 : 1; 385 } 386 387 void s390_cpu_list(void) 388 { 389 S390FeatGroup group; 390 S390Feat feat; 391 GSList *list; 392 393 list = object_class_get_list(TYPE_S390_CPU, false); 394 list = g_slist_sort(list, s390_cpu_list_compare); 395 g_slist_foreach(list, s390_print_cpu_model_list_entry, NULL); 396 g_slist_free(list); 397 398 qemu_printf("\nRecognized feature flags:\n"); 399 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 400 const S390FeatDef *def = s390_feat_def(feat); 401 402 qemu_printf("%-20s %s\n", def->name, def->desc); 403 } 404 405 qemu_printf("\nRecognized feature groups:\n"); 406 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 407 const S390FeatGroupDef *def = s390_feat_group_def(group); 408 409 qemu_printf("%-20s %s\n", def->name, def->desc); 410 } 411 } 412 413 static void check_consistency(const S390CPUModel *model) 414 { 415 static int dep[][2] = { 416 { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH }, 417 { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH }, 418 { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH }, 419 { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT }, 420 { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH}, 421 { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT }, 422 { S390_FEAT_DFP_FAST, S390_FEAT_DFP }, 423 { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 }, 424 { S390_FEAT_EDAT_2, S390_FEAT_EDAT}, 425 { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 }, 426 { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 }, 427 { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 }, 428 { S390_FEAT_SIE_CMMA, S390_FEAT_CMM }, 429 { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS }, 430 { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT }, 431 { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 }, 432 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_3 }, 433 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_4 }, 434 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 435 { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR }, 436 { S390_FEAT_VECTOR_PACKED_DECIMAL_ENH, S390_FEAT_VECTOR_PACKED_DECIMAL }, 437 { S390_FEAT_VECTOR_PACKED_DECIMAL_ENH2, S390_FEAT_VECTOR_PACKED_DECIMAL_ENH }, 438 { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR }, 439 { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 440 { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP }, 441 { S390_FEAT_CMM_NT, S390_FEAT_CMM }, 442 { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 443 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST }, 444 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 445 { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 }, 446 { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA }, 447 { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA }, 448 { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA }, 449 { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA }, 450 { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA }, 451 { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA }, 452 { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA }, 453 { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA }, 454 { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA }, 455 { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA }, 456 { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA }, 457 { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA }, 458 { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 }, 459 { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 }, 460 { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 }, 461 { S390_FEAT_AP_QUERY_CONFIG_INFO, S390_FEAT_AP }, 462 { S390_FEAT_AP_FACILITIES_TEST, S390_FEAT_AP }, 463 { S390_FEAT_PTFF_QSIE, S390_FEAT_MULTIPLE_EPOCH }, 464 { S390_FEAT_PTFF_QTOUE, S390_FEAT_MULTIPLE_EPOCH }, 465 { S390_FEAT_PTFF_STOE, S390_FEAT_MULTIPLE_EPOCH }, 466 { S390_FEAT_PTFF_STOUE, S390_FEAT_MULTIPLE_EPOCH }, 467 { S390_FEAT_AP_QUEUE_INTERRUPT_CONTROL, S390_FEAT_AP }, 468 { S390_FEAT_DIAG_318, S390_FEAT_EXTENDED_LENGTH_SCCB }, 469 { S390_FEAT_NNPA, S390_FEAT_VECTOR }, 470 { S390_FEAT_RDP, S390_FEAT_LOCAL_TLB_CLEARING }, 471 }; 472 int i; 473 474 for (i = 0; i < ARRAY_SIZE(dep); i++) { 475 if (test_bit(dep[i][0], model->features) && 476 !test_bit(dep[i][1], model->features)) { 477 warn_report("\'%s\' requires \'%s\'.", 478 s390_feat_def(dep[i][0])->name, 479 s390_feat_def(dep[i][1])->name); 480 } 481 } 482 } 483 484 static void error_prepend_missing_feat(const char *name, void *opaque) 485 { 486 error_prepend((Error **) opaque, "%s ", name); 487 } 488 489 static void check_compatibility(const S390CPUModel *max_model, 490 const S390CPUModel *model, Error **errp) 491 { 492 S390FeatBitmap missing; 493 494 if (model->def->gen > max_model->def->gen) { 495 error_setg(errp, "Selected CPU generation is too new. Maximum " 496 "supported model in the configuration: \'%s\'", 497 max_model->def->name); 498 return; 499 } else if (model->def->gen == max_model->def->gen && 500 model->def->ec_ga > max_model->def->ec_ga) { 501 error_setg(errp, "Selected CPU GA level is too new. Maximum " 502 "supported model in the configuration: \'%s\'", 503 max_model->def->name); 504 return; 505 } 506 507 #ifndef CONFIG_USER_ONLY 508 if (only_migratable && test_bit(S390_FEAT_UNPACK, model->features)) { 509 error_setg(errp, "The unpack facility is not compatible with " 510 "the --only-migratable option. You must remove either " 511 "the 'unpack' facility or the --only-migratable option"); 512 return; 513 } 514 #endif 515 516 /* detect the missing features to properly report them */ 517 bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX); 518 if (bitmap_empty(missing, S390_FEAT_MAX)) { 519 return; 520 } 521 522 error_setg(errp, " "); 523 s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat); 524 error_prepend(errp, "Some features requested in the CPU model are not " 525 "available in the configuration: "); 526 } 527 528 S390CPUModel *get_max_cpu_model(Error **errp) 529 { 530 Error *err = NULL; 531 static S390CPUModel max_model; 532 static bool cached; 533 534 if (cached) { 535 return &max_model; 536 } 537 538 if (kvm_enabled()) { 539 kvm_s390_get_host_cpu_model(&max_model, &err); 540 } else { 541 max_model.def = s390_find_cpu_def(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 542 QEMU_MAX_CPU_EC_GA, NULL); 543 bitmap_copy(max_model.features, qemu_max_cpu_feat, S390_FEAT_MAX); 544 } 545 if (err) { 546 error_propagate(errp, err); 547 return NULL; 548 } 549 cached = true; 550 return &max_model; 551 } 552 553 void s390_realize_cpu_model(CPUState *cs, Error **errp) 554 { 555 Error *err = NULL; 556 S390CPUClass *xcc = S390_CPU_GET_CLASS(cs); 557 S390CPU *cpu = S390_CPU(cs); 558 const S390CPUModel *max_model; 559 560 if (xcc->kvm_required && !kvm_enabled()) { 561 error_setg(errp, "CPU definition requires KVM"); 562 return; 563 } 564 565 if (!cpu->model) { 566 /* no host model support -> perform compatibility stuff */ 567 apply_cpu_model(NULL, errp); 568 return; 569 } 570 571 max_model = get_max_cpu_model(errp); 572 if (!max_model) { 573 error_prepend(errp, "CPU models are not available: "); 574 return; 575 } 576 577 /* copy over properties that can vary */ 578 cpu->model->lowest_ibc = max_model->lowest_ibc; 579 cpu->model->cpu_id = max_model->cpu_id; 580 cpu->model->cpu_id_format = max_model->cpu_id_format; 581 cpu->model->cpu_ver = max_model->cpu_ver; 582 583 check_consistency(cpu->model); 584 check_compatibility(max_model, cpu->model, &err); 585 if (err) { 586 error_propagate(errp, err); 587 return; 588 } 589 590 apply_cpu_model(cpu->model, errp); 591 592 #if !defined(CONFIG_USER_ONLY) 593 cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model); 594 if (tcg_enabled()) { 595 /* basic mode, write the cpu address into the first 4 bit of the ID */ 596 cpu->env.cpuid = deposit64(cpu->env.cpuid, 54, 4, cpu->env.core_id); 597 } 598 #endif 599 } 600 601 static void get_feature(Object *obj, Visitor *v, const char *name, 602 void *opaque, Error **errp) 603 { 604 S390Feat feat = (S390Feat) (uintptr_t) opaque; 605 S390CPU *cpu = S390_CPU(obj); 606 bool value; 607 608 if (!cpu->model) { 609 error_setg(errp, "Details about the host CPU model are not available, " 610 "features cannot be queried."); 611 return; 612 } 613 614 value = test_bit(feat, cpu->model->features); 615 visit_type_bool(v, name, &value, errp); 616 } 617 618 static void set_feature(Object *obj, Visitor *v, const char *name, 619 void *opaque, Error **errp) 620 { 621 S390Feat feat = (S390Feat) (uintptr_t) opaque; 622 DeviceState *dev = DEVICE(obj); 623 S390CPU *cpu = S390_CPU(obj); 624 bool value; 625 626 if (dev->realized) { 627 error_setg(errp, "Attempt to set property '%s' on '%s' after " 628 "it was realized", name, object_get_typename(obj)); 629 return; 630 } else if (!cpu->model) { 631 error_setg(errp, "Details about the host CPU model are not available, " 632 "features cannot be changed."); 633 return; 634 } 635 636 if (!visit_type_bool(v, name, &value, errp)) { 637 return; 638 } 639 if (value) { 640 if (!test_bit(feat, cpu->model->def->full_feat)) { 641 error_setg(errp, "Feature '%s' is not available for CPU model '%s'," 642 " it was introduced with later models.", 643 name, cpu->model->def->name); 644 return; 645 } 646 set_bit(feat, cpu->model->features); 647 } else { 648 clear_bit(feat, cpu->model->features); 649 } 650 } 651 652 static void get_feature_group(Object *obj, Visitor *v, const char *name, 653 void *opaque, Error **errp) 654 { 655 S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque; 656 const S390FeatGroupDef *def = s390_feat_group_def(group); 657 S390CPU *cpu = S390_CPU(obj); 658 S390FeatBitmap tmp; 659 bool value; 660 661 if (!cpu->model) { 662 error_setg(errp, "Details about the host CPU model are not available, " 663 "features cannot be queried."); 664 return; 665 } 666 667 /* a group is enabled if all features are enabled */ 668 bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX); 669 value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX); 670 visit_type_bool(v, name, &value, errp); 671 } 672 673 static void set_feature_group(Object *obj, Visitor *v, const char *name, 674 void *opaque, Error **errp) 675 { 676 S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque; 677 const S390FeatGroupDef *def = s390_feat_group_def(group); 678 DeviceState *dev = DEVICE(obj); 679 S390CPU *cpu = S390_CPU(obj); 680 bool value; 681 682 if (dev->realized) { 683 error_setg(errp, "Attempt to set property '%s' on '%s' after " 684 "it was realized", name, object_get_typename(obj)); 685 return; 686 } else if (!cpu->model) { 687 error_setg(errp, "Details about the host CPU model are not available, " 688 "features cannot be changed."); 689 return; 690 } 691 692 if (!visit_type_bool(v, name, &value, errp)) { 693 return; 694 } 695 if (value) { 696 /* groups are added in one shot, so an intersect is sufficient */ 697 if (!bitmap_intersects(def->feat, cpu->model->def->full_feat, 698 S390_FEAT_MAX)) { 699 error_setg(errp, "Group '%s' is not available for CPU model '%s'," 700 " it was introduced with later models.", 701 name, cpu->model->def->name); 702 return; 703 } 704 bitmap_or(cpu->model->features, cpu->model->features, def->feat, 705 S390_FEAT_MAX); 706 } else { 707 bitmap_andnot(cpu->model->features, cpu->model->features, def->feat, 708 S390_FEAT_MAX); 709 } 710 } 711 712 static void s390_cpu_model_initfn(Object *obj) 713 { 714 S390CPU *cpu = S390_CPU(obj); 715 S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu); 716 717 cpu->model = g_malloc0(sizeof(*cpu->model)); 718 /* copy the model, so we can modify it */ 719 cpu->model->def = xcc->cpu_def; 720 if (xcc->is_static) { 721 /* base model - features will never change */ 722 bitmap_copy(cpu->model->features, cpu->model->def->base_feat, 723 S390_FEAT_MAX); 724 } else { 725 /* latest model - features can change */ 726 bitmap_copy(cpu->model->features, 727 cpu->model->def->default_feat, S390_FEAT_MAX); 728 } 729 } 730 731 static S390CPUDef s390_qemu_cpu_def; 732 static S390CPUModel s390_qemu_cpu_model; 733 734 /* Set the qemu CPU model (on machine initialization). Must not be called 735 * once CPUs have been created. 736 */ 737 void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga, 738 const S390FeatInit feat_init) 739 { 740 const S390CPUDef *def = s390_find_cpu_def(type, gen, ec_ga, NULL); 741 742 g_assert(def); 743 g_assert(QTAILQ_EMPTY_RCU(&cpus)); 744 745 /* TCG emulates some features that can usually not be enabled with 746 * the emulated machine generation. Make sure they can be enabled 747 * when using the QEMU model by adding them to full_feat. We have 748 * to copy the definition to do that. 749 */ 750 memcpy(&s390_qemu_cpu_def, def, sizeof(s390_qemu_cpu_def)); 751 bitmap_or(s390_qemu_cpu_def.full_feat, s390_qemu_cpu_def.full_feat, 752 qemu_max_cpu_feat, S390_FEAT_MAX); 753 754 /* build the CPU model */ 755 s390_qemu_cpu_model.def = &s390_qemu_cpu_def; 756 bitmap_zero(s390_qemu_cpu_model.features, S390_FEAT_MAX); 757 s390_init_feat_bitmap(feat_init, s390_qemu_cpu_model.features); 758 } 759 760 static void s390_qemu_cpu_model_initfn(Object *obj) 761 { 762 S390CPU *cpu = S390_CPU(obj); 763 764 cpu->model = g_malloc0(sizeof(*cpu->model)); 765 /* copy the CPU model so we can modify it */ 766 memcpy(cpu->model, &s390_qemu_cpu_model, sizeof(*cpu->model)); 767 } 768 769 static void s390_max_cpu_model_initfn(Object *obj) 770 { 771 const S390CPUModel *max_model; 772 S390CPU *cpu = S390_CPU(obj); 773 Error *local_err = NULL; 774 775 if (kvm_enabled() && !kvm_s390_cpu_models_supported()) { 776 /* "max" and "host" always work, even without CPU model support */ 777 return; 778 } 779 780 max_model = get_max_cpu_model(&local_err); 781 if (local_err) { 782 /* we expect errors only under KVM, when actually querying the kernel */ 783 g_assert(kvm_enabled()); 784 error_report_err(local_err); 785 /* fallback to unsupported CPU models */ 786 return; 787 } 788 789 cpu->model = g_new(S390CPUModel, 1); 790 /* copy the CPU model so we can modify it */ 791 memcpy(cpu->model, max_model, sizeof(*cpu->model)); 792 } 793 794 static void s390_cpu_model_finalize(Object *obj) 795 { 796 S390CPU *cpu = S390_CPU(obj); 797 798 g_free(cpu->model); 799 cpu->model = NULL; 800 } 801 802 static bool get_is_migration_safe(Object *obj, Error **errp) 803 { 804 return S390_CPU_GET_CLASS(obj)->is_migration_safe; 805 } 806 807 static bool get_is_static(Object *obj, Error **errp) 808 { 809 return S390_CPU_GET_CLASS(obj)->is_static; 810 } 811 812 static char *get_description(Object *obj, Error **errp) 813 { 814 return g_strdup(S390_CPU_GET_CLASS(obj)->desc); 815 } 816 817 void s390_cpu_model_class_register_props(ObjectClass *oc) 818 { 819 S390FeatGroup group; 820 S390Feat feat; 821 822 object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe, 823 NULL); 824 object_class_property_add_bool(oc, "static", get_is_static, 825 NULL); 826 object_class_property_add_str(oc, "description", get_description, NULL); 827 828 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 829 const S390FeatDef *def = s390_feat_def(feat); 830 object_class_property_add(oc, def->name, "bool", get_feature, 831 set_feature, NULL, (void *) feat); 832 object_class_property_set_description(oc, def->name, def->desc); 833 } 834 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 835 const S390FeatGroupDef *def = s390_feat_group_def(group); 836 object_class_property_add(oc, def->name, "bool", get_feature_group, 837 set_feature_group, NULL, (void *) group); 838 object_class_property_set_description(oc, def->name, def->desc); 839 } 840 } 841 842 #ifdef CONFIG_KVM 843 static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data) 844 { 845 S390CPUClass *xcc = S390_CPU_CLASS(oc); 846 847 xcc->kvm_required = true; 848 xcc->desc = "KVM only: All recognized features"; 849 } 850 #endif 851 852 static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data) 853 { 854 S390CPUClass *xcc = S390_CPU_CLASS(oc); 855 856 /* all base models are migration safe */ 857 xcc->cpu_def = (const S390CPUDef *) data; 858 xcc->is_migration_safe = true; 859 xcc->is_static = true; 860 xcc->desc = xcc->cpu_def->desc; 861 } 862 863 static void s390_cpu_model_class_init(ObjectClass *oc, void *data) 864 { 865 S390CPUClass *xcc = S390_CPU_CLASS(oc); 866 867 /* model that can change between QEMU versions */ 868 xcc->cpu_def = (const S390CPUDef *) data; 869 xcc->is_migration_safe = true; 870 xcc->desc = xcc->cpu_def->desc; 871 } 872 873 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data) 874 { 875 S390CPUClass *xcc = S390_CPU_CLASS(oc); 876 877 xcc->is_migration_safe = true; 878 xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s", 879 qemu_hw_version()); 880 } 881 882 static void s390_max_cpu_model_class_init(ObjectClass *oc, void *data) 883 { 884 S390CPUClass *xcc = S390_CPU_CLASS(oc); 885 886 /* 887 * The "max" model is neither static nor migration safe. Under KVM 888 * it represents the "host" model. Under TCG it represents some kind of 889 * "qemu" CPU model without compat handling and maybe with some additional 890 * CPU features that are not yet unlocked in the "qemu" model. 891 */ 892 xcc->desc = 893 "Enables all features supported by the accelerator in the current host"; 894 } 895 896 /* Generate type name for a cpu model. Caller has to free the string. */ 897 static char *s390_cpu_type_name(const char *model_name) 898 { 899 return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name); 900 } 901 902 /* Generate type name for a base cpu model. Caller has to free the string. */ 903 static char *s390_base_cpu_type_name(const char *model_name) 904 { 905 return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name); 906 } 907 908 ObjectClass *s390_cpu_class_by_name(const char *name) 909 { 910 char *typename = s390_cpu_type_name(name); 911 ObjectClass *oc; 912 913 oc = object_class_by_name(typename); 914 g_free(typename); 915 return oc; 916 } 917 918 static const TypeInfo qemu_s390_cpu_type_info = { 919 .name = S390_CPU_TYPE_NAME("qemu"), 920 .parent = TYPE_S390_CPU, 921 .instance_init = s390_qemu_cpu_model_initfn, 922 .instance_finalize = s390_cpu_model_finalize, 923 .class_init = s390_qemu_cpu_model_class_init, 924 }; 925 926 static const TypeInfo max_s390_cpu_type_info = { 927 .name = S390_CPU_TYPE_NAME("max"), 928 .parent = TYPE_S390_CPU, 929 .instance_init = s390_max_cpu_model_initfn, 930 .instance_finalize = s390_cpu_model_finalize, 931 .class_init = s390_max_cpu_model_class_init, 932 }; 933 934 #ifdef CONFIG_KVM 935 static const TypeInfo host_s390_cpu_type_info = { 936 .name = S390_CPU_TYPE_NAME("host"), 937 .parent = S390_CPU_TYPE_NAME("max"), 938 .class_init = s390_host_cpu_model_class_init, 939 }; 940 #endif 941 942 static void init_ignored_base_feat(void) 943 { 944 static const int feats[] = { 945 /* MSA subfunctions that could not be available on certain machines */ 946 S390_FEAT_KMAC_DEA, 947 S390_FEAT_KMAC_TDEA_128, 948 S390_FEAT_KMAC_TDEA_192, 949 S390_FEAT_KMC_DEA, 950 S390_FEAT_KMC_TDEA_128, 951 S390_FEAT_KMC_TDEA_192, 952 S390_FEAT_KM_DEA, 953 S390_FEAT_KM_TDEA_128, 954 S390_FEAT_KM_TDEA_192, 955 S390_FEAT_KIMD_SHA_1, 956 S390_FEAT_KLMD_SHA_1, 957 /* CSSKE is deprecated on newer generations */ 958 S390_FEAT_CONDITIONAL_SSKE, 959 }; 960 int i; 961 962 for (i = 0; i < ARRAY_SIZE(feats); i++) { 963 set_bit(feats[i], ignored_base_feat); 964 } 965 } 966 967 static void register_types(void) 968 { 969 static const S390FeatInit qemu_latest_init = { S390_FEAT_LIST_QEMU_LATEST }; 970 int i; 971 972 init_ignored_base_feat(); 973 974 /* init all bitmaps from gnerated data initially */ 975 s390_init_feat_bitmap(qemu_max_cpu_feat_init, qemu_max_cpu_feat); 976 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 977 s390_init_feat_bitmap(s390_cpu_defs[i].base_init, 978 s390_cpu_defs[i].base_feat); 979 s390_init_feat_bitmap(s390_cpu_defs[i].default_init, 980 s390_cpu_defs[i].default_feat); 981 s390_init_feat_bitmap(s390_cpu_defs[i].full_init, 982 s390_cpu_defs[i].full_feat); 983 } 984 985 /* initialize the qemu model with latest definition */ 986 s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 987 QEMU_MAX_CPU_EC_GA, qemu_latest_init); 988 989 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 990 char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name); 991 TypeInfo ti_base = { 992 .name = base_name, 993 .parent = TYPE_S390_CPU, 994 .instance_init = s390_cpu_model_initfn, 995 .instance_finalize = s390_cpu_model_finalize, 996 .class_init = s390_base_cpu_model_class_init, 997 .class_data = (void *) &s390_cpu_defs[i], 998 }; 999 char *name = s390_cpu_type_name(s390_cpu_defs[i].name); 1000 TypeInfo ti = { 1001 .name = name, 1002 .parent = TYPE_S390_CPU, 1003 .instance_init = s390_cpu_model_initfn, 1004 .instance_finalize = s390_cpu_model_finalize, 1005 .class_init = s390_cpu_model_class_init, 1006 .class_data = (void *) &s390_cpu_defs[i], 1007 }; 1008 1009 type_register_static(&ti_base); 1010 type_register_static(&ti); 1011 g_free(base_name); 1012 g_free(name); 1013 } 1014 1015 type_register_static(&qemu_s390_cpu_type_info); 1016 type_register_static(&max_s390_cpu_type_info); 1017 #ifdef CONFIG_KVM 1018 type_register_static(&host_s390_cpu_type_info); 1019 #endif 1020 } 1021 1022 type_init(register_types) 1023