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("s390 %-15s %-35s (%s)\n", name, scc->desc, details->str); 359 } else { 360 qemu_printf("s390 %-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 list = object_class_get_list(TYPE_S390_CPU, false); 406 list = g_slist_sort(list, s390_cpu_list_compare); 407 g_slist_foreach(list, s390_print_cpu_model_list_entry, NULL); 408 g_slist_free(list); 409 410 qemu_printf("\nRecognized feature flags:\n"); 411 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 412 const S390FeatDef *def = s390_feat_def(feat); 413 414 qemu_printf("%-20s %s\n", def->name, def->desc); 415 } 416 417 qemu_printf("\nRecognized feature groups:\n"); 418 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 419 const S390FeatGroupDef *def = s390_feat_group_def(group); 420 421 qemu_printf("%-20s %s\n", def->name, def->desc); 422 } 423 } 424 425 static void check_consistency(const S390CPUModel *model) 426 { 427 static int dep[][2] = { 428 { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH }, 429 { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH }, 430 { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH }, 431 { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT }, 432 { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH}, 433 { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT }, 434 { S390_FEAT_DFP_FAST, S390_FEAT_DFP }, 435 { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 }, 436 { S390_FEAT_EDAT_2, S390_FEAT_EDAT}, 437 { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 }, 438 { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 }, 439 { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 }, 440 { S390_FEAT_SIE_CMMA, S390_FEAT_CMM }, 441 { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS }, 442 { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT }, 443 { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 }, 444 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_3 }, 445 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_4 }, 446 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 447 { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR }, 448 { S390_FEAT_VECTOR_PACKED_DECIMAL_ENH, S390_FEAT_VECTOR_PACKED_DECIMAL }, 449 { S390_FEAT_VECTOR_PACKED_DECIMAL_ENH2, S390_FEAT_VECTOR_PACKED_DECIMAL_ENH }, 450 { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR }, 451 { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 452 { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP }, 453 { S390_FEAT_CMM_NT, S390_FEAT_CMM }, 454 { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 455 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST }, 456 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 457 { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 }, 458 { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA }, 459 { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA }, 460 { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA }, 461 { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA }, 462 { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA }, 463 { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA }, 464 { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA }, 465 { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA }, 466 { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA }, 467 { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA }, 468 { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA }, 469 { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA }, 470 { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 }, 471 { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 }, 472 { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 }, 473 { S390_FEAT_AP_QUERY_CONFIG_INFO, S390_FEAT_AP }, 474 { S390_FEAT_AP_FACILITIES_TEST, S390_FEAT_AP }, 475 { S390_FEAT_PTFF_QSIE, S390_FEAT_MULTIPLE_EPOCH }, 476 { S390_FEAT_PTFF_QTOUE, S390_FEAT_MULTIPLE_EPOCH }, 477 { S390_FEAT_PTFF_STOE, S390_FEAT_MULTIPLE_EPOCH }, 478 { S390_FEAT_PTFF_STOUE, S390_FEAT_MULTIPLE_EPOCH }, 479 { S390_FEAT_AP_QUEUE_INTERRUPT_CONTROL, S390_FEAT_AP }, 480 { S390_FEAT_DIAG_318, S390_FEAT_EXTENDED_LENGTH_SCCB }, 481 { S390_FEAT_NNPA, S390_FEAT_VECTOR }, 482 { S390_FEAT_RDP, S390_FEAT_LOCAL_TLB_CLEARING }, 483 { S390_FEAT_UV_FEAT_AP, S390_FEAT_AP }, 484 { S390_FEAT_UV_FEAT_AP_INTR, S390_FEAT_UV_FEAT_AP }, 485 }; 486 int i; 487 488 for (i = 0; i < ARRAY_SIZE(dep); i++) { 489 if (test_bit(dep[i][0], model->features) && 490 !test_bit(dep[i][1], model->features)) { 491 warn_report("\'%s\' requires \'%s\'.", 492 s390_feat_def(dep[i][0])->name, 493 s390_feat_def(dep[i][1])->name); 494 } 495 } 496 } 497 498 static void error_prepend_missing_feat(const char *name, void *opaque) 499 { 500 error_prepend((Error **) opaque, "%s ", name); 501 } 502 503 static void check_compat_model_failed(Error **errp, 504 const S390CPUModel *max_model, 505 const char *msg) 506 { 507 error_setg(errp, "%s. Maximum supported model in the current configuration: \'%s\'", 508 msg, max_model->def->name); 509 error_append_hint(errp, "Consider a different accelerator, try \"-accel help\"\n"); 510 return; 511 } 512 513 static bool check_compatibility(const S390CPUModel *max_model, 514 const S390CPUModel *model, Error **errp) 515 { 516 ERRP_GUARD(); 517 S390FeatBitmap missing; 518 519 if (model->def->gen > max_model->def->gen) { 520 check_compat_model_failed(errp, max_model, "Selected CPU generation is too new"); 521 return false; 522 } else if (model->def->gen == max_model->def->gen && 523 model->def->ec_ga > max_model->def->ec_ga) { 524 check_compat_model_failed(errp, max_model, "Selected CPU GA level is too new"); 525 return false; 526 } 527 528 #ifndef CONFIG_USER_ONLY 529 if (only_migratable && test_bit(S390_FEAT_UNPACK, model->features)) { 530 error_setg(errp, "The unpack facility is not compatible with " 531 "the --only-migratable option. You must remove either " 532 "the 'unpack' facility or the --only-migratable option"); 533 return false; 534 } 535 #endif 536 537 /* detect the missing features to properly report them */ 538 bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX); 539 if (bitmap_empty(missing, S390_FEAT_MAX)) { 540 return true; 541 } 542 543 error_setg(errp, " "); 544 s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat); 545 error_prepend(errp, "Some features requested in the CPU model are not " 546 "available in the current configuration: "); 547 error_append_hint(errp, 548 "Consider a different accelerator, QEMU, or kernel version\n"); 549 return false; 550 } 551 552 S390CPUModel *get_max_cpu_model(Error **errp) 553 { 554 Error *err = NULL; 555 static S390CPUModel max_model; 556 static bool cached; 557 558 if (cached) { 559 return &max_model; 560 } 561 562 if (kvm_enabled()) { 563 kvm_s390_get_host_cpu_model(&max_model, &err); 564 } else { 565 max_model.def = s390_find_cpu_def(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 566 QEMU_MAX_CPU_EC_GA, NULL); 567 bitmap_copy(max_model.features, qemu_max_cpu_feat, S390_FEAT_MAX); 568 } 569 if (err) { 570 error_propagate(errp, err); 571 return NULL; 572 } 573 cached = true; 574 return &max_model; 575 } 576 577 void s390_realize_cpu_model(CPUState *cs, Error **errp) 578 { 579 ERRP_GUARD(); 580 S390CPUClass *xcc = S390_CPU_GET_CLASS(cs); 581 S390CPU *cpu = S390_CPU(cs); 582 const S390CPUModel *max_model; 583 584 if (xcc->kvm_required && !kvm_enabled()) { 585 error_setg(errp, "CPU definition requires KVM"); 586 return; 587 } 588 589 if (!cpu->model) { 590 /* no host model support -> perform compatibility stuff */ 591 apply_cpu_model(NULL, errp); 592 return; 593 } 594 595 max_model = get_max_cpu_model(errp); 596 if (!max_model) { 597 error_prepend(errp, "CPU models are not available: "); 598 return; 599 } 600 601 /* copy over properties that can vary */ 602 cpu->model->lowest_ibc = max_model->lowest_ibc; 603 cpu->model->cpu_id = max_model->cpu_id; 604 cpu->model->cpu_id_format = max_model->cpu_id_format; 605 cpu->model->cpu_ver = max_model->cpu_ver; 606 607 check_consistency(cpu->model); 608 if (!check_compatibility(max_model, cpu->model, errp)) { 609 return; 610 } 611 612 apply_cpu_model(cpu->model, errp); 613 614 #if !defined(CONFIG_USER_ONLY) 615 cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model); 616 if (tcg_enabled()) { 617 cpu->env.cpuid = deposit64(cpu->env.cpuid, CPU_PHYS_ADDR_SHIFT, 618 CPU_PHYS_ADDR_BITS, cpu->env.core_id); 619 } 620 #endif 621 } 622 623 static void get_feature(Object *obj, Visitor *v, const char *name, 624 void *opaque, Error **errp) 625 { 626 S390Feat feat = (S390Feat) (uintptr_t) opaque; 627 S390CPU *cpu = S390_CPU(obj); 628 bool value; 629 630 if (!cpu->model) { 631 error_setg(errp, "Details about the host CPU model are not available, " 632 "features cannot be queried."); 633 return; 634 } 635 636 value = test_bit(feat, cpu->model->features); 637 visit_type_bool(v, name, &value, errp); 638 } 639 640 static void set_feature(Object *obj, Visitor *v, const char *name, 641 void *opaque, Error **errp) 642 { 643 S390Feat feat = (S390Feat) (uintptr_t) opaque; 644 DeviceState *dev = DEVICE(obj); 645 S390CPU *cpu = S390_CPU(obj); 646 bool value; 647 648 if (dev->realized) { 649 error_setg(errp, "Attempt to set property '%s' on '%s' after " 650 "it was realized", name, object_get_typename(obj)); 651 return; 652 } else if (!cpu->model) { 653 error_setg(errp, "Details about the host CPU model are not available, " 654 "features cannot be changed."); 655 return; 656 } 657 658 if (!visit_type_bool(v, name, &value, errp)) { 659 return; 660 } 661 if (value) { 662 if (!test_bit(feat, cpu->model->def->full_feat)) { 663 error_setg(errp, "Feature '%s' is not available for CPU model '%s'," 664 " it was introduced with later models.", 665 name, cpu->model->def->name); 666 return; 667 } 668 set_bit(feat, cpu->model->features); 669 } else { 670 clear_bit(feat, cpu->model->features); 671 } 672 } 673 674 static void get_feature_group(Object *obj, Visitor *v, const char *name, 675 void *opaque, Error **errp) 676 { 677 S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque; 678 const S390FeatGroupDef *def = s390_feat_group_def(group); 679 S390CPU *cpu = S390_CPU(obj); 680 S390FeatBitmap tmp; 681 bool value; 682 683 if (!cpu->model) { 684 error_setg(errp, "Details about the host CPU model are not available, " 685 "features cannot be queried."); 686 return; 687 } 688 689 /* a group is enabled if all features are enabled */ 690 bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX); 691 value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX); 692 visit_type_bool(v, name, &value, errp); 693 } 694 695 static void set_feature_group(Object *obj, Visitor *v, const char *name, 696 void *opaque, Error **errp) 697 { 698 S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque; 699 const S390FeatGroupDef *def = s390_feat_group_def(group); 700 DeviceState *dev = DEVICE(obj); 701 S390CPU *cpu = S390_CPU(obj); 702 bool value; 703 704 if (dev->realized) { 705 error_setg(errp, "Attempt to set property '%s' on '%s' after " 706 "it was realized", name, object_get_typename(obj)); 707 return; 708 } else if (!cpu->model) { 709 error_setg(errp, "Details about the host CPU model are not available, " 710 "features cannot be changed."); 711 return; 712 } 713 714 if (!visit_type_bool(v, name, &value, errp)) { 715 return; 716 } 717 if (value) { 718 /* groups are added in one shot, so an intersect is sufficient */ 719 if (!bitmap_intersects(def->feat, cpu->model->def->full_feat, 720 S390_FEAT_MAX)) { 721 error_setg(errp, "Group '%s' is not available for CPU model '%s'," 722 " it was introduced with later models.", 723 name, cpu->model->def->name); 724 return; 725 } 726 bitmap_or(cpu->model->features, cpu->model->features, def->feat, 727 S390_FEAT_MAX); 728 } else { 729 bitmap_andnot(cpu->model->features, cpu->model->features, def->feat, 730 S390_FEAT_MAX); 731 } 732 } 733 734 static void s390_cpu_model_initfn(Object *obj) 735 { 736 S390CPU *cpu = S390_CPU(obj); 737 S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu); 738 739 cpu->model = g_malloc0(sizeof(*cpu->model)); 740 /* copy the model, so we can modify it */ 741 cpu->model->def = xcc->cpu_def; 742 if (xcc->is_static) { 743 /* base model - features will never change */ 744 bitmap_copy(cpu->model->features, cpu->model->def->base_feat, 745 S390_FEAT_MAX); 746 } else { 747 /* latest model - features can change */ 748 bitmap_copy(cpu->model->features, 749 cpu->model->def->default_feat, S390_FEAT_MAX); 750 } 751 } 752 753 static S390CPUModel s390_qemu_cpu_model; 754 755 /* Set the qemu CPU model (on machine initialization). Must not be called 756 * once CPUs have been created. 757 */ 758 void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga, 759 const S390FeatInit feat_init) 760 { 761 const S390CPUDef *def = s390_find_cpu_def(type, gen, ec_ga, NULL); 762 763 g_assert(def); 764 g_assert(QTAILQ_EMPTY_RCU(&cpus_queue)); 765 766 /* build the CPU model */ 767 s390_qemu_cpu_model.def = def; 768 bitmap_zero(s390_qemu_cpu_model.features, S390_FEAT_MAX); 769 s390_init_feat_bitmap(feat_init, s390_qemu_cpu_model.features); 770 } 771 772 static void s390_qemu_cpu_model_initfn(Object *obj) 773 { 774 S390CPU *cpu = S390_CPU(obj); 775 776 cpu->model = g_malloc0(sizeof(*cpu->model)); 777 /* copy the CPU model so we can modify it */ 778 memcpy(cpu->model, &s390_qemu_cpu_model, sizeof(*cpu->model)); 779 } 780 781 static void s390_max_cpu_model_initfn(Object *obj) 782 { 783 const S390CPUModel *max_model; 784 S390CPU *cpu = S390_CPU(obj); 785 Error *local_err = NULL; 786 787 if (kvm_enabled() && !kvm_s390_cpu_models_supported()) { 788 /* "max" and "host" always work, even without CPU model support */ 789 return; 790 } 791 792 max_model = get_max_cpu_model(&local_err); 793 if (local_err) { 794 /* we expect errors only under KVM, when actually querying the kernel */ 795 g_assert(kvm_enabled()); 796 error_report_err(local_err); 797 /* fallback to unsupported CPU models */ 798 return; 799 } 800 801 cpu->model = g_new(S390CPUModel, 1); 802 /* copy the CPU model so we can modify it */ 803 memcpy(cpu->model, max_model, sizeof(*cpu->model)); 804 } 805 806 static void s390_cpu_model_finalize(Object *obj) 807 { 808 S390CPU *cpu = S390_CPU(obj); 809 810 g_free(cpu->model); 811 cpu->model = NULL; 812 } 813 814 static bool get_is_migration_safe(Object *obj, Error **errp) 815 { 816 return S390_CPU_GET_CLASS(obj)->is_migration_safe; 817 } 818 819 static bool get_is_static(Object *obj, Error **errp) 820 { 821 return S390_CPU_GET_CLASS(obj)->is_static; 822 } 823 824 static char *get_description(Object *obj, Error **errp) 825 { 826 return g_strdup(S390_CPU_GET_CLASS(obj)->desc); 827 } 828 829 void s390_cpu_model_class_register_props(ObjectClass *oc) 830 { 831 S390FeatGroup group; 832 S390Feat feat; 833 834 object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe, 835 NULL); 836 object_class_property_add_bool(oc, "static", get_is_static, 837 NULL); 838 object_class_property_add_str(oc, "description", get_description, NULL); 839 840 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 841 const S390FeatDef *def = s390_feat_def(feat); 842 object_class_property_add(oc, def->name, "bool", get_feature, 843 set_feature, NULL, (void *) feat); 844 object_class_property_set_description(oc, def->name, def->desc); 845 } 846 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 847 const S390FeatGroupDef *def = s390_feat_group_def(group); 848 object_class_property_add(oc, def->name, "bool", get_feature_group, 849 set_feature_group, NULL, (void *) group); 850 object_class_property_set_description(oc, def->name, def->desc); 851 } 852 } 853 854 #ifdef CONFIG_KVM 855 static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data) 856 { 857 S390CPUClass *xcc = S390_CPU_CLASS(oc); 858 859 xcc->kvm_required = true; 860 xcc->desc = "KVM only: All recognized features"; 861 } 862 #endif 863 864 static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data) 865 { 866 S390CPUClass *xcc = S390_CPU_CLASS(oc); 867 868 /* all base models are migration safe */ 869 xcc->cpu_def = (const S390CPUDef *) data; 870 xcc->is_migration_safe = true; 871 xcc->is_static = true; 872 xcc->desc = xcc->cpu_def->desc; 873 } 874 875 static void s390_cpu_model_class_init(ObjectClass *oc, void *data) 876 { 877 S390CPUClass *xcc = S390_CPU_CLASS(oc); 878 879 /* model that can change between QEMU versions */ 880 xcc->cpu_def = (const S390CPUDef *) data; 881 xcc->is_migration_safe = true; 882 xcc->desc = xcc->cpu_def->desc; 883 } 884 885 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data) 886 { 887 S390CPUClass *xcc = S390_CPU_CLASS(oc); 888 889 xcc->is_migration_safe = true; 890 xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s", 891 qemu_hw_version()); 892 } 893 894 static void s390_max_cpu_model_class_init(ObjectClass *oc, void *data) 895 { 896 S390CPUClass *xcc = S390_CPU_CLASS(oc); 897 898 /* 899 * The "max" model is neither static nor migration safe. Under KVM 900 * it represents the "host" model. Under TCG it represents the "qemu" CPU 901 * model of the latest QEMU machine. 902 */ 903 xcc->desc = 904 "Enables all features supported by the accelerator in the current host"; 905 } 906 907 /* Generate type name for a cpu model. Caller has to free the string. */ 908 static char *s390_cpu_type_name(const char *model_name) 909 { 910 return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name); 911 } 912 913 /* Generate type name for a base cpu model. Caller has to free the string. */ 914 static char *s390_base_cpu_type_name(const char *model_name) 915 { 916 return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name); 917 } 918 919 ObjectClass *s390_cpu_class_by_name(const char *name) 920 { 921 char *typename = s390_cpu_type_name(name); 922 ObjectClass *oc; 923 924 oc = object_class_by_name(typename); 925 g_free(typename); 926 return oc; 927 } 928 929 static const TypeInfo qemu_s390_cpu_type_info = { 930 .name = S390_CPU_TYPE_NAME("qemu"), 931 .parent = TYPE_S390_CPU, 932 .instance_init = s390_qemu_cpu_model_initfn, 933 .instance_finalize = s390_cpu_model_finalize, 934 .class_init = s390_qemu_cpu_model_class_init, 935 }; 936 937 static const TypeInfo max_s390_cpu_type_info = { 938 .name = S390_CPU_TYPE_NAME("max"), 939 .parent = TYPE_S390_CPU, 940 .instance_init = s390_max_cpu_model_initfn, 941 .instance_finalize = s390_cpu_model_finalize, 942 .class_init = s390_max_cpu_model_class_init, 943 }; 944 945 #ifdef CONFIG_KVM 946 static const TypeInfo host_s390_cpu_type_info = { 947 .name = S390_CPU_TYPE_NAME("host"), 948 .parent = S390_CPU_TYPE_NAME("max"), 949 .class_init = s390_host_cpu_model_class_init, 950 }; 951 #endif 952 953 static void init_ignored_base_feat(void) 954 { 955 static const int feats[] = { 956 /* MSA subfunctions that could not be available on certain machines */ 957 S390_FEAT_KMAC_DEA, 958 S390_FEAT_KMAC_TDEA_128, 959 S390_FEAT_KMAC_TDEA_192, 960 S390_FEAT_KMC_DEA, 961 S390_FEAT_KMC_TDEA_128, 962 S390_FEAT_KMC_TDEA_192, 963 S390_FEAT_KM_DEA, 964 S390_FEAT_KM_TDEA_128, 965 S390_FEAT_KM_TDEA_192, 966 S390_FEAT_KIMD_SHA_1, 967 S390_FEAT_KLMD_SHA_1, 968 /* CSSKE is deprecated on newer generations */ 969 S390_FEAT_CONDITIONAL_SSKE, 970 }; 971 int i; 972 973 for (i = 0; i < ARRAY_SIZE(feats); i++) { 974 set_bit(feats[i], ignored_base_feat); 975 } 976 } 977 978 static void register_types(void) 979 { 980 static const S390FeatInit qemu_max_init = { S390_FEAT_LIST_QEMU_MAX }; 981 int i; 982 983 init_ignored_base_feat(); 984 985 /* init all bitmaps from generated data initially */ 986 s390_init_feat_bitmap(qemu_max_init, qemu_max_cpu_feat); 987 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 988 s390_init_feat_bitmap(s390_cpu_defs[i].base_init, 989 s390_cpu_defs[i].base_feat); 990 s390_init_feat_bitmap(s390_cpu_defs[i].default_init, 991 s390_cpu_defs[i].default_feat); 992 s390_init_feat_bitmap(s390_cpu_defs[i].full_init, 993 s390_cpu_defs[i].full_feat); 994 } 995 996 /* initialize the qemu model with the maximum definition ("max" model) */ 997 s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 998 QEMU_MAX_CPU_EC_GA, qemu_max_init); 999 1000 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 1001 char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name); 1002 TypeInfo ti_base = { 1003 .name = base_name, 1004 .parent = TYPE_S390_CPU, 1005 .instance_init = s390_cpu_model_initfn, 1006 .instance_finalize = s390_cpu_model_finalize, 1007 .class_init = s390_base_cpu_model_class_init, 1008 .class_data = (void *) &s390_cpu_defs[i], 1009 }; 1010 char *name = s390_cpu_type_name(s390_cpu_defs[i].name); 1011 TypeInfo ti = { 1012 .name = name, 1013 .parent = TYPE_S390_CPU, 1014 .instance_init = s390_cpu_model_initfn, 1015 .instance_finalize = s390_cpu_model_finalize, 1016 .class_init = s390_cpu_model_class_init, 1017 .class_data = (void *) &s390_cpu_defs[i], 1018 }; 1019 1020 type_register_static(&ti_base); 1021 type_register_static(&ti); 1022 g_free(base_name); 1023 g_free(name); 1024 } 1025 1026 type_register_static(&qemu_s390_cpu_type_info); 1027 type_register_static(&max_s390_cpu_type_info); 1028 #ifdef CONFIG_KVM 1029 type_register_static(&host_s390_cpu_type_info); 1030 #endif 1031 } 1032 1033 type_init(register_types) 1034