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 case S390_FEAT_CONFIGURATION_TOPOLOGY: 259 return false; 260 break; 261 default: 262 break; 263 } 264 } 265 #endif 266 return test_bit(feat, cpu->model->features); 267 } 268 269 uint8_t s390_get_gen_for_cpu_type(uint16_t type) 270 { 271 int i; 272 273 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 274 if (s390_cpu_defs[i].type == type) { 275 return s390_cpu_defs[i].gen; 276 } 277 } 278 return 0; 279 } 280 281 const S390CPUDef *s390_find_cpu_def(uint16_t type, uint8_t gen, uint8_t ec_ga, 282 S390FeatBitmap features) 283 { 284 const S390CPUDef *last_compatible = NULL; 285 const S390CPUDef *matching_cpu_type = NULL; 286 int i; 287 288 if (!gen) { 289 ec_ga = 0; 290 } 291 if (!gen && type) { 292 gen = s390_get_gen_for_cpu_type(type); 293 } 294 295 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 296 const S390CPUDef *def = &s390_cpu_defs[i]; 297 S390FeatBitmap missing; 298 299 /* don't even try newer generations if we know the generation */ 300 if (gen) { 301 if (def->gen > gen) { 302 break; 303 } else if (def->gen == gen && ec_ga && def->ec_ga > ec_ga) { 304 break; 305 } 306 } 307 308 if (features) { 309 /* see if the model satisfies the minimum features */ 310 bitmap_andnot(missing, def->base_feat, features, S390_FEAT_MAX); 311 /* 312 * Ignore certain features that are in the base model, but not 313 * relevant for the search (esp. MSA subfunctions). 314 */ 315 bitmap_andnot(missing, missing, ignored_base_feat, S390_FEAT_MAX); 316 if (!bitmap_empty(missing, S390_FEAT_MAX)) { 317 break; 318 } 319 } 320 321 /* stop the search if we found the exact model */ 322 if (def->type == type && def->ec_ga == ec_ga) { 323 return def; 324 } 325 /* remember if we've at least seen one with the same cpu type */ 326 if (def->type == type) { 327 matching_cpu_type = def; 328 } 329 last_compatible = def; 330 } 331 /* prefer the model with the same cpu type, esp. don't take the BC for EC */ 332 if (matching_cpu_type) { 333 return matching_cpu_type; 334 } 335 return last_compatible; 336 } 337 338 static void s390_print_cpu_model_list_entry(gpointer data, gpointer user_data) 339 { 340 const S390CPUClass *scc = S390_CPU_CLASS((ObjectClass *)data); 341 CPUClass *cc = CPU_CLASS(scc); 342 char *name = g_strdup(object_class_get_name((ObjectClass *)data)); 343 g_autoptr(GString) details = g_string_new(""); 344 345 if (scc->is_static) { 346 g_string_append(details, "static, "); 347 } 348 if (scc->is_migration_safe) { 349 g_string_append(details, "migration-safe, "); 350 } 351 if (cc->deprecation_note) { 352 g_string_append(details, "deprecated, "); 353 } 354 if (details->len) { 355 /* cull trailing ', ' */ 356 g_string_truncate(details, details->len - 2); 357 } 358 359 /* strip off the -s390x-cpu */ 360 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; 361 if (details->len) { 362 qemu_printf("s390 %-15s %-35s (%s)\n", name, scc->desc, details->str); 363 } else { 364 qemu_printf("s390 %-15s %-35s\n", name, scc->desc); 365 } 366 g_free(name); 367 } 368 369 static gint s390_cpu_list_compare(gconstpointer a, gconstpointer b) 370 { 371 const S390CPUClass *cc_a = S390_CPU_CLASS((ObjectClass *)a); 372 const S390CPUClass *cc_b = S390_CPU_CLASS((ObjectClass *)b); 373 const char *name_a = object_class_get_name((ObjectClass *)a); 374 const char *name_b = object_class_get_name((ObjectClass *)b); 375 376 /* 377 * Move qemu, host and max to the top of the list, qemu first, host second, 378 * max third. 379 */ 380 if (name_a[0] == 'q') { 381 return -1; 382 } else if (name_b[0] == 'q') { 383 return 1; 384 } else if (name_a[0] == 'h') { 385 return -1; 386 } else if (name_b[0] == 'h') { 387 return 1; 388 } else if (name_a[0] == 'm') { 389 return -1; 390 } else if (name_b[0] == 'm') { 391 return 1; 392 } 393 394 /* keep the same order we have in our table (sorted by release date) */ 395 if (cc_a->cpu_def != cc_b->cpu_def) { 396 return cc_a->cpu_def - cc_b->cpu_def; 397 } 398 399 /* exact same definition - list base model first */ 400 return cc_a->is_static ? -1 : 1; 401 } 402 403 void s390_cpu_list(void) 404 { 405 S390FeatGroup group; 406 S390Feat feat; 407 GSList *list; 408 409 list = object_class_get_list(TYPE_S390_CPU, false); 410 list = g_slist_sort(list, s390_cpu_list_compare); 411 g_slist_foreach(list, s390_print_cpu_model_list_entry, NULL); 412 g_slist_free(list); 413 414 qemu_printf("\nRecognized feature flags:\n"); 415 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 416 const S390FeatDef *def = s390_feat_def(feat); 417 418 qemu_printf("%-20s %s\n", def->name, def->desc); 419 } 420 421 qemu_printf("\nRecognized feature groups:\n"); 422 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 423 const S390FeatGroupDef *def = s390_feat_group_def(group); 424 425 qemu_printf("%-20s %s\n", def->name, def->desc); 426 } 427 } 428 429 static void check_consistency(const S390CPUModel *model) 430 { 431 static int dep[][2] = { 432 { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH }, 433 { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH }, 434 { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH }, 435 { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT }, 436 { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH}, 437 { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT }, 438 { S390_FEAT_DFP_FAST, S390_FEAT_DFP }, 439 { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 }, 440 { S390_FEAT_EDAT_2, S390_FEAT_EDAT}, 441 { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 }, 442 { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 }, 443 { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 }, 444 { S390_FEAT_SIE_CMMA, S390_FEAT_CMM }, 445 { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS }, 446 { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT }, 447 { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 }, 448 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_3 }, 449 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_4 }, 450 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 451 { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR }, 452 { S390_FEAT_VECTOR_PACKED_DECIMAL_ENH, S390_FEAT_VECTOR_PACKED_DECIMAL }, 453 { S390_FEAT_VECTOR_PACKED_DECIMAL_ENH2, S390_FEAT_VECTOR_PACKED_DECIMAL_ENH }, 454 { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR }, 455 { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 456 { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP }, 457 { S390_FEAT_CMM_NT, S390_FEAT_CMM }, 458 { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 459 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST }, 460 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 461 { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 }, 462 { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA }, 463 { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA }, 464 { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA }, 465 { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA }, 466 { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA }, 467 { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA }, 468 { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA }, 469 { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA }, 470 { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA }, 471 { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA }, 472 { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA }, 473 { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA }, 474 { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 }, 475 { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 }, 476 { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 }, 477 { S390_FEAT_AP_QUERY_CONFIG_INFO, S390_FEAT_AP }, 478 { S390_FEAT_AP_FACILITIES_TEST, S390_FEAT_AP }, 479 { S390_FEAT_PTFF_QSIE, S390_FEAT_MULTIPLE_EPOCH }, 480 { S390_FEAT_PTFF_QTOUE, S390_FEAT_MULTIPLE_EPOCH }, 481 { S390_FEAT_PTFF_STOE, S390_FEAT_MULTIPLE_EPOCH }, 482 { S390_FEAT_PTFF_STOUE, S390_FEAT_MULTIPLE_EPOCH }, 483 { S390_FEAT_AP_QUEUE_INTERRUPT_CONTROL, S390_FEAT_AP }, 484 { S390_FEAT_DIAG_318, S390_FEAT_EXTENDED_LENGTH_SCCB }, 485 { S390_FEAT_NNPA, S390_FEAT_VECTOR }, 486 { S390_FEAT_RDP, S390_FEAT_LOCAL_TLB_CLEARING }, 487 { S390_FEAT_UV_FEAT_AP, S390_FEAT_AP }, 488 { S390_FEAT_UV_FEAT_AP_INTR, S390_FEAT_UV_FEAT_AP }, 489 }; 490 int i; 491 492 for (i = 0; i < ARRAY_SIZE(dep); i++) { 493 if (test_bit(dep[i][0], model->features) && 494 !test_bit(dep[i][1], model->features)) { 495 warn_report("\'%s\' requires \'%s\'.", 496 s390_feat_def(dep[i][0])->name, 497 s390_feat_def(dep[i][1])->name); 498 } 499 } 500 } 501 502 static void error_prepend_missing_feat(const char *name, void *opaque) 503 { 504 error_prepend((Error **) opaque, "%s ", name); 505 } 506 507 static void check_compatibility(const S390CPUModel *max_model, 508 const S390CPUModel *model, Error **errp) 509 { 510 S390FeatBitmap missing; 511 512 if (model->def->gen > max_model->def->gen) { 513 error_setg(errp, "Selected CPU generation is too new. Maximum " 514 "supported model in the configuration: \'%s\'", 515 max_model->def->name); 516 return; 517 } else if (model->def->gen == max_model->def->gen && 518 model->def->ec_ga > max_model->def->ec_ga) { 519 error_setg(errp, "Selected CPU GA level is too new. Maximum " 520 "supported model in the configuration: \'%s\'", 521 max_model->def->name); 522 return; 523 } 524 525 #ifndef CONFIG_USER_ONLY 526 if (only_migratable && test_bit(S390_FEAT_UNPACK, model->features)) { 527 error_setg(errp, "The unpack facility is not compatible with " 528 "the --only-migratable option. You must remove either " 529 "the 'unpack' facility or the --only-migratable option"); 530 return; 531 } 532 #endif 533 534 /* detect the missing features to properly report them */ 535 bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX); 536 if (bitmap_empty(missing, S390_FEAT_MAX)) { 537 return; 538 } 539 540 error_setg(errp, " "); 541 s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat); 542 error_prepend(errp, "Some features requested in the CPU model are not " 543 "available in the configuration: "); 544 } 545 546 S390CPUModel *get_max_cpu_model(Error **errp) 547 { 548 Error *err = NULL; 549 static S390CPUModel max_model; 550 static bool cached; 551 552 if (cached) { 553 return &max_model; 554 } 555 556 if (kvm_enabled()) { 557 kvm_s390_get_host_cpu_model(&max_model, &err); 558 } else { 559 max_model.def = s390_find_cpu_def(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 560 QEMU_MAX_CPU_EC_GA, NULL); 561 bitmap_copy(max_model.features, qemu_max_cpu_feat, S390_FEAT_MAX); 562 } 563 if (err) { 564 error_propagate(errp, err); 565 return NULL; 566 } 567 cached = true; 568 return &max_model; 569 } 570 571 void s390_realize_cpu_model(CPUState *cs, Error **errp) 572 { 573 Error *err = NULL; 574 S390CPUClass *xcc = S390_CPU_GET_CLASS(cs); 575 S390CPU *cpu = S390_CPU(cs); 576 const S390CPUModel *max_model; 577 578 if (xcc->kvm_required && !kvm_enabled()) { 579 error_setg(errp, "CPU definition requires KVM"); 580 return; 581 } 582 583 if (!cpu->model) { 584 /* no host model support -> perform compatibility stuff */ 585 apply_cpu_model(NULL, errp); 586 return; 587 } 588 589 max_model = get_max_cpu_model(errp); 590 if (!max_model) { 591 error_prepend(errp, "CPU models are not available: "); 592 return; 593 } 594 595 /* copy over properties that can vary */ 596 cpu->model->lowest_ibc = max_model->lowest_ibc; 597 cpu->model->cpu_id = max_model->cpu_id; 598 cpu->model->cpu_id_format = max_model->cpu_id_format; 599 cpu->model->cpu_ver = max_model->cpu_ver; 600 601 check_consistency(cpu->model); 602 check_compatibility(max_model, cpu->model, &err); 603 if (err) { 604 error_propagate(errp, err); 605 return; 606 } 607 608 apply_cpu_model(cpu->model, errp); 609 610 #if !defined(CONFIG_USER_ONLY) 611 cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model); 612 if (tcg_enabled()) { 613 cpu->env.cpuid = deposit64(cpu->env.cpuid, CPU_PHYS_ADDR_SHIFT, 614 CPU_PHYS_ADDR_BITS, cpu->env.core_id); 615 } 616 #endif 617 } 618 619 static void get_feature(Object *obj, Visitor *v, const char *name, 620 void *opaque, Error **errp) 621 { 622 S390Feat feat = (S390Feat) (uintptr_t) opaque; 623 S390CPU *cpu = S390_CPU(obj); 624 bool value; 625 626 if (!cpu->model) { 627 error_setg(errp, "Details about the host CPU model are not available, " 628 "features cannot be queried."); 629 return; 630 } 631 632 value = test_bit(feat, cpu->model->features); 633 visit_type_bool(v, name, &value, errp); 634 } 635 636 static void set_feature(Object *obj, Visitor *v, const char *name, 637 void *opaque, Error **errp) 638 { 639 S390Feat feat = (S390Feat) (uintptr_t) opaque; 640 DeviceState *dev = DEVICE(obj); 641 S390CPU *cpu = S390_CPU(obj); 642 bool value; 643 644 if (dev->realized) { 645 error_setg(errp, "Attempt to set property '%s' on '%s' after " 646 "it was realized", name, object_get_typename(obj)); 647 return; 648 } else if (!cpu->model) { 649 error_setg(errp, "Details about the host CPU model are not available, " 650 "features cannot be changed."); 651 return; 652 } 653 654 if (!visit_type_bool(v, name, &value, errp)) { 655 return; 656 } 657 if (value) { 658 if (!test_bit(feat, cpu->model->def->full_feat)) { 659 error_setg(errp, "Feature '%s' is not available for CPU model '%s'," 660 " it was introduced with later models.", 661 name, cpu->model->def->name); 662 return; 663 } 664 set_bit(feat, cpu->model->features); 665 } else { 666 clear_bit(feat, cpu->model->features); 667 } 668 } 669 670 static void get_feature_group(Object *obj, Visitor *v, const char *name, 671 void *opaque, Error **errp) 672 { 673 S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque; 674 const S390FeatGroupDef *def = s390_feat_group_def(group); 675 S390CPU *cpu = S390_CPU(obj); 676 S390FeatBitmap tmp; 677 bool value; 678 679 if (!cpu->model) { 680 error_setg(errp, "Details about the host CPU model are not available, " 681 "features cannot be queried."); 682 return; 683 } 684 685 /* a group is enabled if all features are enabled */ 686 bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX); 687 value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX); 688 visit_type_bool(v, name, &value, errp); 689 } 690 691 static void set_feature_group(Object *obj, Visitor *v, const char *name, 692 void *opaque, Error **errp) 693 { 694 S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque; 695 const S390FeatGroupDef *def = s390_feat_group_def(group); 696 DeviceState *dev = DEVICE(obj); 697 S390CPU *cpu = S390_CPU(obj); 698 bool value; 699 700 if (dev->realized) { 701 error_setg(errp, "Attempt to set property '%s' on '%s' after " 702 "it was realized", name, object_get_typename(obj)); 703 return; 704 } else if (!cpu->model) { 705 error_setg(errp, "Details about the host CPU model are not available, " 706 "features cannot be changed."); 707 return; 708 } 709 710 if (!visit_type_bool(v, name, &value, errp)) { 711 return; 712 } 713 if (value) { 714 /* groups are added in one shot, so an intersect is sufficient */ 715 if (!bitmap_intersects(def->feat, cpu->model->def->full_feat, 716 S390_FEAT_MAX)) { 717 error_setg(errp, "Group '%s' is not available for CPU model '%s'," 718 " it was introduced with later models.", 719 name, cpu->model->def->name); 720 return; 721 } 722 bitmap_or(cpu->model->features, cpu->model->features, def->feat, 723 S390_FEAT_MAX); 724 } else { 725 bitmap_andnot(cpu->model->features, cpu->model->features, def->feat, 726 S390_FEAT_MAX); 727 } 728 } 729 730 static void s390_cpu_model_initfn(Object *obj) 731 { 732 S390CPU *cpu = S390_CPU(obj); 733 S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu); 734 735 cpu->model = g_malloc0(sizeof(*cpu->model)); 736 /* copy the model, so we can modify it */ 737 cpu->model->def = xcc->cpu_def; 738 if (xcc->is_static) { 739 /* base model - features will never change */ 740 bitmap_copy(cpu->model->features, cpu->model->def->base_feat, 741 S390_FEAT_MAX); 742 } else { 743 /* latest model - features can change */ 744 bitmap_copy(cpu->model->features, 745 cpu->model->def->default_feat, S390_FEAT_MAX); 746 } 747 } 748 749 static S390CPUModel s390_qemu_cpu_model; 750 751 /* Set the qemu CPU model (on machine initialization). Must not be called 752 * once CPUs have been created. 753 */ 754 void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga, 755 const S390FeatInit feat_init) 756 { 757 const S390CPUDef *def = s390_find_cpu_def(type, gen, ec_ga, NULL); 758 759 g_assert(def); 760 g_assert(QTAILQ_EMPTY_RCU(&cpus)); 761 762 /* build the CPU model */ 763 s390_qemu_cpu_model.def = def; 764 bitmap_zero(s390_qemu_cpu_model.features, S390_FEAT_MAX); 765 s390_init_feat_bitmap(feat_init, s390_qemu_cpu_model.features); 766 } 767 768 static void s390_qemu_cpu_model_initfn(Object *obj) 769 { 770 S390CPU *cpu = S390_CPU(obj); 771 772 cpu->model = g_malloc0(sizeof(*cpu->model)); 773 /* copy the CPU model so we can modify it */ 774 memcpy(cpu->model, &s390_qemu_cpu_model, sizeof(*cpu->model)); 775 } 776 777 static void s390_max_cpu_model_initfn(Object *obj) 778 { 779 const S390CPUModel *max_model; 780 S390CPU *cpu = S390_CPU(obj); 781 Error *local_err = NULL; 782 783 if (kvm_enabled() && !kvm_s390_cpu_models_supported()) { 784 /* "max" and "host" always work, even without CPU model support */ 785 return; 786 } 787 788 max_model = get_max_cpu_model(&local_err); 789 if (local_err) { 790 /* we expect errors only under KVM, when actually querying the kernel */ 791 g_assert(kvm_enabled()); 792 error_report_err(local_err); 793 /* fallback to unsupported CPU models */ 794 return; 795 } 796 797 cpu->model = g_new(S390CPUModel, 1); 798 /* copy the CPU model so we can modify it */ 799 memcpy(cpu->model, max_model, sizeof(*cpu->model)); 800 } 801 802 static void s390_cpu_model_finalize(Object *obj) 803 { 804 S390CPU *cpu = S390_CPU(obj); 805 806 g_free(cpu->model); 807 cpu->model = NULL; 808 } 809 810 static bool get_is_migration_safe(Object *obj, Error **errp) 811 { 812 return S390_CPU_GET_CLASS(obj)->is_migration_safe; 813 } 814 815 static bool get_is_static(Object *obj, Error **errp) 816 { 817 return S390_CPU_GET_CLASS(obj)->is_static; 818 } 819 820 static char *get_description(Object *obj, Error **errp) 821 { 822 return g_strdup(S390_CPU_GET_CLASS(obj)->desc); 823 } 824 825 void s390_cpu_model_class_register_props(ObjectClass *oc) 826 { 827 S390FeatGroup group; 828 S390Feat feat; 829 830 object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe, 831 NULL); 832 object_class_property_add_bool(oc, "static", get_is_static, 833 NULL); 834 object_class_property_add_str(oc, "description", get_description, NULL); 835 836 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 837 const S390FeatDef *def = s390_feat_def(feat); 838 object_class_property_add(oc, def->name, "bool", get_feature, 839 set_feature, NULL, (void *) feat); 840 object_class_property_set_description(oc, def->name, def->desc); 841 } 842 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 843 const S390FeatGroupDef *def = s390_feat_group_def(group); 844 object_class_property_add(oc, def->name, "bool", get_feature_group, 845 set_feature_group, NULL, (void *) group); 846 object_class_property_set_description(oc, def->name, def->desc); 847 } 848 } 849 850 #ifdef CONFIG_KVM 851 static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data) 852 { 853 S390CPUClass *xcc = S390_CPU_CLASS(oc); 854 855 xcc->kvm_required = true; 856 xcc->desc = "KVM only: All recognized features"; 857 } 858 #endif 859 860 static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data) 861 { 862 S390CPUClass *xcc = S390_CPU_CLASS(oc); 863 864 /* all base models are migration safe */ 865 xcc->cpu_def = (const S390CPUDef *) data; 866 xcc->is_migration_safe = true; 867 xcc->is_static = true; 868 xcc->desc = xcc->cpu_def->desc; 869 } 870 871 static void s390_cpu_model_class_init(ObjectClass *oc, void *data) 872 { 873 S390CPUClass *xcc = S390_CPU_CLASS(oc); 874 875 /* model that can change between QEMU versions */ 876 xcc->cpu_def = (const S390CPUDef *) data; 877 xcc->is_migration_safe = true; 878 xcc->desc = xcc->cpu_def->desc; 879 } 880 881 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data) 882 { 883 S390CPUClass *xcc = S390_CPU_CLASS(oc); 884 885 xcc->is_migration_safe = true; 886 xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s", 887 qemu_hw_version()); 888 } 889 890 static void s390_max_cpu_model_class_init(ObjectClass *oc, void *data) 891 { 892 S390CPUClass *xcc = S390_CPU_CLASS(oc); 893 894 /* 895 * The "max" model is neither static nor migration safe. Under KVM 896 * it represents the "host" model. Under TCG it represents the "qemu" CPU 897 * model of the latest QEMU machine. 898 */ 899 xcc->desc = 900 "Enables all features supported by the accelerator in the current host"; 901 } 902 903 /* Generate type name for a cpu model. Caller has to free the string. */ 904 static char *s390_cpu_type_name(const char *model_name) 905 { 906 return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name); 907 } 908 909 /* Generate type name for a base cpu model. Caller has to free the string. */ 910 static char *s390_base_cpu_type_name(const char *model_name) 911 { 912 return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name); 913 } 914 915 ObjectClass *s390_cpu_class_by_name(const char *name) 916 { 917 char *typename = s390_cpu_type_name(name); 918 ObjectClass *oc; 919 920 oc = object_class_by_name(typename); 921 g_free(typename); 922 return oc; 923 } 924 925 static const TypeInfo qemu_s390_cpu_type_info = { 926 .name = S390_CPU_TYPE_NAME("qemu"), 927 .parent = TYPE_S390_CPU, 928 .instance_init = s390_qemu_cpu_model_initfn, 929 .instance_finalize = s390_cpu_model_finalize, 930 .class_init = s390_qemu_cpu_model_class_init, 931 }; 932 933 static const TypeInfo max_s390_cpu_type_info = { 934 .name = S390_CPU_TYPE_NAME("max"), 935 .parent = TYPE_S390_CPU, 936 .instance_init = s390_max_cpu_model_initfn, 937 .instance_finalize = s390_cpu_model_finalize, 938 .class_init = s390_max_cpu_model_class_init, 939 }; 940 941 #ifdef CONFIG_KVM 942 static const TypeInfo host_s390_cpu_type_info = { 943 .name = S390_CPU_TYPE_NAME("host"), 944 .parent = S390_CPU_TYPE_NAME("max"), 945 .class_init = s390_host_cpu_model_class_init, 946 }; 947 #endif 948 949 static void init_ignored_base_feat(void) 950 { 951 static const int feats[] = { 952 /* MSA subfunctions that could not be available on certain machines */ 953 S390_FEAT_KMAC_DEA, 954 S390_FEAT_KMAC_TDEA_128, 955 S390_FEAT_KMAC_TDEA_192, 956 S390_FEAT_KMC_DEA, 957 S390_FEAT_KMC_TDEA_128, 958 S390_FEAT_KMC_TDEA_192, 959 S390_FEAT_KM_DEA, 960 S390_FEAT_KM_TDEA_128, 961 S390_FEAT_KM_TDEA_192, 962 S390_FEAT_KIMD_SHA_1, 963 S390_FEAT_KLMD_SHA_1, 964 /* CSSKE is deprecated on newer generations */ 965 S390_FEAT_CONDITIONAL_SSKE, 966 }; 967 int i; 968 969 for (i = 0; i < ARRAY_SIZE(feats); i++) { 970 set_bit(feats[i], ignored_base_feat); 971 } 972 } 973 974 static void register_types(void) 975 { 976 static const S390FeatInit qemu_max_init = { S390_FEAT_LIST_QEMU_MAX }; 977 int i; 978 979 init_ignored_base_feat(); 980 981 /* init all bitmaps from generated data initially */ 982 s390_init_feat_bitmap(qemu_max_init, qemu_max_cpu_feat); 983 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 984 s390_init_feat_bitmap(s390_cpu_defs[i].base_init, 985 s390_cpu_defs[i].base_feat); 986 s390_init_feat_bitmap(s390_cpu_defs[i].default_init, 987 s390_cpu_defs[i].default_feat); 988 s390_init_feat_bitmap(s390_cpu_defs[i].full_init, 989 s390_cpu_defs[i].full_feat); 990 } 991 992 /* initialize the qemu model with the maximum definition ("max" model) */ 993 s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 994 QEMU_MAX_CPU_EC_GA, qemu_max_init); 995 996 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 997 char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name); 998 TypeInfo ti_base = { 999 .name = base_name, 1000 .parent = TYPE_S390_CPU, 1001 .instance_init = s390_cpu_model_initfn, 1002 .instance_finalize = s390_cpu_model_finalize, 1003 .class_init = s390_base_cpu_model_class_init, 1004 .class_data = (void *) &s390_cpu_defs[i], 1005 }; 1006 char *name = s390_cpu_type_name(s390_cpu_defs[i].name); 1007 TypeInfo ti = { 1008 .name = name, 1009 .parent = TYPE_S390_CPU, 1010 .instance_init = s390_cpu_model_initfn, 1011 .instance_finalize = s390_cpu_model_finalize, 1012 .class_init = s390_cpu_model_class_init, 1013 .class_data = (void *) &s390_cpu_defs[i], 1014 }; 1015 1016 type_register_static(&ti_base); 1017 type_register_static(&ti); 1018 g_free(base_name); 1019 g_free(name); 1020 } 1021 1022 type_register_static(&qemu_s390_cpu_type_info); 1023 type_register_static(&max_s390_cpu_type_info); 1024 #ifdef CONFIG_KVM 1025 type_register_static(&host_s390_cpu_type_info); 1026 #endif 1027 } 1028 1029 type_init(register_types) 1030