1 /* 2 * CPU models for s390x 3 * 4 * Copyright 2016 IBM Corp. 5 * 6 * Author(s): David Hildenbrand <dahi@linux.vnet.ibm.com> 7 * 8 * This work is licensed under the terms of the GNU GPL, version 2 or (at 9 * your option) any later version. See the COPYING file in the top-level 10 * directory. 11 */ 12 13 #include "qemu/osdep.h" 14 #include "cpu.h" 15 #include "s390x-internal.h" 16 #include "kvm/kvm_s390x.h" 17 #include "sysemu/kvm.h" 18 #include "sysemu/tcg.h" 19 #include "qapi/error.h" 20 #include "qemu/error-report.h" 21 #include "qapi/visitor.h" 22 #include "qemu/module.h" 23 #include "qemu/hw-version.h" 24 #include "qemu/qemu-print.h" 25 #ifndef CONFIG_USER_ONLY 26 #include "sysemu/sysemu.h" 27 #include "target/s390x/kvm/pv.h" 28 #endif 29 30 #define CPUDEF_INIT(_type, _gen, _ec_ga, _mha_pow, _hmfai, _name, _desc) \ 31 { \ 32 .name = _name, \ 33 .type = _type, \ 34 .gen = _gen, \ 35 .ec_ga = _ec_ga, \ 36 .mha_pow = _mha_pow, \ 37 .hmfai = _hmfai, \ 38 .desc = _desc, \ 39 .base_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _BASE }, \ 40 .default_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _DEFAULT }, \ 41 .full_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _FULL }, \ 42 } 43 44 /* 45 * CPU definition list in order of release. Up to generation 14 base features 46 * of a following release have been a superset of the previous release. With 47 * generation 15 one base feature and one optional feature have been deprecated. 48 */ 49 static S390CPUDef s390_cpu_defs[] = { 50 CPUDEF_INIT(0x2064, 7, 1, 38, 0x00000000U, "z900", "IBM zSeries 900 GA1"), 51 CPUDEF_INIT(0x2064, 7, 2, 38, 0x00000000U, "z900.2", "IBM zSeries 900 GA2"), 52 CPUDEF_INIT(0x2064, 7, 3, 38, 0x00000000U, "z900.3", "IBM zSeries 900 GA3"), 53 CPUDEF_INIT(0x2066, 7, 3, 38, 0x00000000U, "z800", "IBM zSeries 800 GA1"), 54 CPUDEF_INIT(0x2084, 8, 1, 38, 0x00000000U, "z990", "IBM zSeries 990 GA1"), 55 CPUDEF_INIT(0x2084, 8, 2, 38, 0x00000000U, "z990.2", "IBM zSeries 990 GA2"), 56 CPUDEF_INIT(0x2084, 8, 3, 38, 0x00000000U, "z990.3", "IBM zSeries 990 GA3"), 57 CPUDEF_INIT(0x2086, 8, 3, 38, 0x00000000U, "z890", "IBM zSeries 880 GA1"), 58 CPUDEF_INIT(0x2084, 8, 4, 38, 0x00000000U, "z990.4", "IBM zSeries 990 GA4"), 59 CPUDEF_INIT(0x2086, 8, 4, 38, 0x00000000U, "z890.2", "IBM zSeries 880 GA2"), 60 CPUDEF_INIT(0x2084, 8, 5, 38, 0x00000000U, "z990.5", "IBM zSeries 990 GA5"), 61 CPUDEF_INIT(0x2086, 8, 5, 38, 0x00000000U, "z890.3", "IBM zSeries 880 GA3"), 62 CPUDEF_INIT(0x2094, 9, 1, 40, 0x00000000U, "z9EC", "IBM System z9 EC GA1"), 63 CPUDEF_INIT(0x2094, 9, 2, 40, 0x00000000U, "z9EC.2", "IBM System z9 EC GA2"), 64 CPUDEF_INIT(0x2096, 9, 2, 40, 0x00000000U, "z9BC", "IBM System z9 BC GA1"), 65 CPUDEF_INIT(0x2094, 9, 3, 40, 0x00000000U, "z9EC.3", "IBM System z9 EC GA3"), 66 CPUDEF_INIT(0x2096, 9, 3, 40, 0x00000000U, "z9BC.2", "IBM System z9 BC GA2"), 67 CPUDEF_INIT(0x2097, 10, 1, 43, 0x00000000U, "z10EC", "IBM System z10 EC GA1"), 68 CPUDEF_INIT(0x2097, 10, 2, 43, 0x00000000U, "z10EC.2", "IBM System z10 EC GA2"), 69 CPUDEF_INIT(0x2098, 10, 2, 43, 0x00000000U, "z10BC", "IBM System z10 BC GA1"), 70 CPUDEF_INIT(0x2097, 10, 3, 43, 0x00000000U, "z10EC.3", "IBM System z10 EC GA3"), 71 CPUDEF_INIT(0x2098, 10, 3, 43, 0x00000000U, "z10BC.2", "IBM System z10 BC GA2"), 72 CPUDEF_INIT(0x2817, 11, 1, 44, 0x08000000U, "z196", "IBM zEnterprise 196 GA1"), 73 CPUDEF_INIT(0x2817, 11, 2, 44, 0x08000000U, "z196.2", "IBM zEnterprise 196 GA2"), 74 CPUDEF_INIT(0x2818, 11, 2, 44, 0x08000000U, "z114", "IBM zEnterprise 114 GA1"), 75 CPUDEF_INIT(0x2827, 12, 1, 44, 0x08000000U, "zEC12", "IBM zEnterprise EC12 GA1"), 76 CPUDEF_INIT(0x2827, 12, 2, 44, 0x08000000U, "zEC12.2", "IBM zEnterprise EC12 GA2"), 77 CPUDEF_INIT(0x2828, 12, 2, 44, 0x08000000U, "zBC12", "IBM zEnterprise BC12 GA1"), 78 CPUDEF_INIT(0x2964, 13, 1, 47, 0x08000000U, "z13", "IBM z13 GA1"), 79 CPUDEF_INIT(0x2964, 13, 2, 47, 0x08000000U, "z13.2", "IBM z13 GA2"), 80 CPUDEF_INIT(0x2965, 13, 2, 47, 0x08000000U, "z13s", "IBM z13s GA1"), 81 CPUDEF_INIT(0x3906, 14, 1, 47, 0x08000000U, "z14", "IBM z14 GA1"), 82 CPUDEF_INIT(0x3906, 14, 2, 47, 0x08000000U, "z14.2", "IBM z14 GA2"), 83 CPUDEF_INIT(0x3907, 14, 1, 47, 0x08000000U, "z14ZR1", "IBM z14 Model ZR1 GA1"), 84 CPUDEF_INIT(0x8561, 15, 1, 47, 0x08000000U, "gen15a", "IBM z15 T01 GA1"), 85 CPUDEF_INIT(0x8562, 15, 1, 47, 0x08000000U, "gen15b", "IBM z15 T02 GA1"), 86 CPUDEF_INIT(0x3931, 16, 1, 47, 0x08000000U, "gen16a", "IBM 3931 GA1"), 87 CPUDEF_INIT(0x3932, 16, 1, 47, 0x08000000U, "gen16b", "IBM 3932 GA1"), 88 }; 89 90 #define QEMU_MAX_CPU_TYPE 0x8561 91 #define QEMU_MAX_CPU_GEN 15 92 #define QEMU_MAX_CPU_EC_GA 1 93 static S390FeatBitmap qemu_max_cpu_feat; 94 95 /* features part of a base model but not relevant for finding a base model */ 96 S390FeatBitmap ignored_base_feat; 97 98 void s390_cpudef_featoff(uint8_t gen, uint8_t ec_ga, S390Feat feat) 99 { 100 const S390CPUDef *def; 101 102 def = s390_find_cpu_def(0, gen, ec_ga, NULL); 103 clear_bit(feat, (unsigned long *)&def->default_feat); 104 } 105 106 void s390_cpudef_featoff_greater(uint8_t gen, uint8_t ec_ga, S390Feat feat) 107 { 108 int i; 109 110 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 111 const S390CPUDef *def = &s390_cpu_defs[i]; 112 113 if (def->gen < gen) { 114 continue; 115 } 116 if (def->gen == gen && def->ec_ga < ec_ga) { 117 continue; 118 } 119 120 clear_bit(feat, (unsigned long *)&def->default_feat); 121 } 122 } 123 124 void s390_cpudef_group_featoff_greater(uint8_t gen, uint8_t ec_ga, 125 S390FeatGroup group) 126 { 127 const S390FeatGroupDef *group_def = s390_feat_group_def(group); 128 S390FeatBitmap group_def_off; 129 int i; 130 131 bitmap_complement(group_def_off, group_def->feat, S390_FEAT_MAX); 132 133 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 134 const S390CPUDef *cpu_def = &s390_cpu_defs[i]; 135 136 if (cpu_def->gen < gen) { 137 continue; 138 } 139 if (cpu_def->gen == gen && cpu_def->ec_ga < ec_ga) { 140 continue; 141 } 142 143 bitmap_and((unsigned long *)&cpu_def->default_feat, 144 cpu_def->default_feat, group_def_off, S390_FEAT_MAX); 145 } 146 } 147 148 uint32_t s390_get_hmfai(void) 149 { 150 static S390CPU *cpu; 151 152 if (!cpu) { 153 cpu = S390_CPU(qemu_get_cpu(0)); 154 } 155 156 if (!cpu || !cpu->model) { 157 return 0; 158 } 159 return cpu->model->def->hmfai; 160 } 161 162 uint8_t s390_get_mha_pow(void) 163 { 164 static S390CPU *cpu; 165 166 if (!cpu) { 167 cpu = S390_CPU(qemu_get_cpu(0)); 168 } 169 170 if (!cpu || !cpu->model) { 171 return 0; 172 } 173 return cpu->model->def->mha_pow; 174 } 175 176 uint32_t s390_get_ibc_val(void) 177 { 178 uint16_t unblocked_ibc, lowest_ibc; 179 static S390CPU *cpu; 180 181 if (!cpu) { 182 cpu = S390_CPU(qemu_get_cpu(0)); 183 } 184 185 if (!cpu || !cpu->model) { 186 return 0; 187 } 188 unblocked_ibc = s390_ibc_from_cpu_model(cpu->model); 189 lowest_ibc = cpu->model->lowest_ibc; 190 /* the lowest_ibc always has to be <= unblocked_ibc */ 191 if (!lowest_ibc || lowest_ibc > unblocked_ibc) { 192 return 0; 193 } 194 return ((uint32_t) lowest_ibc << 16) | unblocked_ibc; 195 } 196 197 void s390_get_feat_block(S390FeatType type, uint8_t *data) 198 { 199 static S390CPU *cpu; 200 201 if (!cpu) { 202 cpu = S390_CPU(qemu_get_cpu(0)); 203 } 204 205 if (!cpu || !cpu->model) { 206 return; 207 } 208 s390_fill_feat_block(cpu->model->features, type, data); 209 } 210 211 bool s390_has_feat(S390Feat feat) 212 { 213 static S390CPU *cpu; 214 215 if (!cpu) { 216 cpu = S390_CPU(qemu_get_cpu(0)); 217 } 218 219 if (!cpu || !cpu->model) { 220 #ifdef CONFIG_KVM 221 if (kvm_enabled()) { 222 if (feat == S390_FEAT_VECTOR) { 223 return kvm_check_extension(kvm_state, 224 KVM_CAP_S390_VECTOR_REGISTERS); 225 } 226 if (feat == S390_FEAT_RUNTIME_INSTRUMENTATION) { 227 return kvm_s390_get_ri(); 228 } 229 if (feat == S390_FEAT_MSA_EXT_3) { 230 return true; 231 } 232 } 233 #endif 234 if (feat == S390_FEAT_ZPCI) { 235 return true; 236 } 237 return 0; 238 } 239 240 #ifndef CONFIG_USER_ONLY 241 if (s390_is_pv()) { 242 switch (feat) { 243 case S390_FEAT_DIAG_318: 244 case S390_FEAT_HPMA2: 245 case S390_FEAT_SIE_F2: 246 case S390_FEAT_SIE_SKEY: 247 case S390_FEAT_SIE_GPERE: 248 case S390_FEAT_SIE_SIIF: 249 case S390_FEAT_SIE_SIGPIF: 250 case S390_FEAT_SIE_IB: 251 case S390_FEAT_SIE_CEI: 252 case S390_FEAT_SIE_KSS: 253 case S390_FEAT_SIE_GSLS: 254 case S390_FEAT_SIE_64BSCAO: 255 case S390_FEAT_SIE_CMMA: 256 case S390_FEAT_SIE_PFMFI: 257 case S390_FEAT_SIE_IBS: 258 return false; 259 break; 260 default: 261 break; 262 } 263 } 264 #endif 265 return test_bit(feat, cpu->model->features); 266 } 267 268 uint8_t s390_get_gen_for_cpu_type(uint16_t type) 269 { 270 int i; 271 272 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 273 if (s390_cpu_defs[i].type == type) { 274 return s390_cpu_defs[i].gen; 275 } 276 } 277 return 0; 278 } 279 280 const S390CPUDef *s390_find_cpu_def(uint16_t type, uint8_t gen, uint8_t ec_ga, 281 S390FeatBitmap features) 282 { 283 const S390CPUDef *last_compatible = NULL; 284 const S390CPUDef *matching_cpu_type = NULL; 285 int i; 286 287 if (!gen) { 288 ec_ga = 0; 289 } 290 if (!gen && type) { 291 gen = s390_get_gen_for_cpu_type(type); 292 } 293 294 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 295 const S390CPUDef *def = &s390_cpu_defs[i]; 296 S390FeatBitmap missing; 297 298 /* don't even try newer generations if we know the generation */ 299 if (gen) { 300 if (def->gen > gen) { 301 break; 302 } else if (def->gen == gen && ec_ga && def->ec_ga > ec_ga) { 303 break; 304 } 305 } 306 307 if (features) { 308 /* see if the model satisfies the minimum features */ 309 bitmap_andnot(missing, def->base_feat, features, S390_FEAT_MAX); 310 /* 311 * Ignore certain features that are in the base model, but not 312 * relevant for the search (esp. MSA subfunctions). 313 */ 314 bitmap_andnot(missing, missing, ignored_base_feat, S390_FEAT_MAX); 315 if (!bitmap_empty(missing, S390_FEAT_MAX)) { 316 break; 317 } 318 } 319 320 /* stop the search if we found the exact model */ 321 if (def->type == type && def->ec_ga == ec_ga) { 322 return def; 323 } 324 /* remember if we've at least seen one with the same cpu type */ 325 if (def->type == type) { 326 matching_cpu_type = def; 327 } 328 last_compatible = def; 329 } 330 /* prefer the model with the same cpu type, esp. don't take the BC for EC */ 331 if (matching_cpu_type) { 332 return matching_cpu_type; 333 } 334 return last_compatible; 335 } 336 337 static void s390_print_cpu_model_list_entry(gpointer data, gpointer user_data) 338 { 339 const S390CPUClass *scc = S390_CPU_CLASS((ObjectClass *)data); 340 CPUClass *cc = CPU_CLASS(scc); 341 char *name = g_strdup(object_class_get_name((ObjectClass *)data)); 342 g_autoptr(GString) details = g_string_new(""); 343 344 if (scc->is_static) { 345 g_string_append(details, "static, "); 346 } 347 if (scc->is_migration_safe) { 348 g_string_append(details, "migration-safe, "); 349 } 350 if (cc->deprecation_note) { 351 g_string_append(details, "deprecated, "); 352 } 353 if (details->len) { 354 /* cull trailing ', ' */ 355 g_string_truncate(details, details->len - 2); 356 } 357 358 /* strip off the -s390x-cpu */ 359 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; 360 if (details->len) { 361 qemu_printf("s390 %-15s %-35s (%s)\n", name, scc->desc, details->str); 362 } else { 363 qemu_printf("s390 %-15s %-35s\n", name, scc->desc); 364 } 365 g_free(name); 366 } 367 368 static gint s390_cpu_list_compare(gconstpointer a, gconstpointer b) 369 { 370 const S390CPUClass *cc_a = S390_CPU_CLASS((ObjectClass *)a); 371 const S390CPUClass *cc_b = S390_CPU_CLASS((ObjectClass *)b); 372 const char *name_a = object_class_get_name((ObjectClass *)a); 373 const char *name_b = object_class_get_name((ObjectClass *)b); 374 375 /* 376 * Move qemu, host and max to the top of the list, qemu first, host second, 377 * max third. 378 */ 379 if (name_a[0] == 'q') { 380 return -1; 381 } else if (name_b[0] == 'q') { 382 return 1; 383 } else if (name_a[0] == 'h') { 384 return -1; 385 } else if (name_b[0] == 'h') { 386 return 1; 387 } else if (name_a[0] == 'm') { 388 return -1; 389 } else if (name_b[0] == 'm') { 390 return 1; 391 } 392 393 /* keep the same order we have in our table (sorted by release date) */ 394 if (cc_a->cpu_def != cc_b->cpu_def) { 395 return cc_a->cpu_def - cc_b->cpu_def; 396 } 397 398 /* exact same definition - list base model first */ 399 return cc_a->is_static ? -1 : 1; 400 } 401 402 void s390_cpu_list(void) 403 { 404 S390FeatGroup group; 405 S390Feat feat; 406 GSList *list; 407 408 list = object_class_get_list(TYPE_S390_CPU, false); 409 list = g_slist_sort(list, s390_cpu_list_compare); 410 g_slist_foreach(list, s390_print_cpu_model_list_entry, NULL); 411 g_slist_free(list); 412 413 qemu_printf("\nRecognized feature flags:\n"); 414 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 415 const S390FeatDef *def = s390_feat_def(feat); 416 417 qemu_printf("%-20s %s\n", def->name, def->desc); 418 } 419 420 qemu_printf("\nRecognized feature groups:\n"); 421 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 422 const S390FeatGroupDef *def = s390_feat_group_def(group); 423 424 qemu_printf("%-20s %s\n", def->name, def->desc); 425 } 426 } 427 428 static void check_consistency(const S390CPUModel *model) 429 { 430 static int dep[][2] = { 431 { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH }, 432 { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH }, 433 { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH }, 434 { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT }, 435 { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH}, 436 { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT }, 437 { S390_FEAT_DFP_FAST, S390_FEAT_DFP }, 438 { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 }, 439 { S390_FEAT_EDAT_2, S390_FEAT_EDAT}, 440 { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 }, 441 { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 }, 442 { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 }, 443 { S390_FEAT_SIE_CMMA, S390_FEAT_CMM }, 444 { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS }, 445 { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT }, 446 { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 }, 447 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_3 }, 448 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_4 }, 449 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 450 { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR }, 451 { S390_FEAT_VECTOR_PACKED_DECIMAL_ENH, S390_FEAT_VECTOR_PACKED_DECIMAL }, 452 { S390_FEAT_VECTOR_PACKED_DECIMAL_ENH2, S390_FEAT_VECTOR_PACKED_DECIMAL_ENH }, 453 { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR }, 454 { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 455 { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP }, 456 { S390_FEAT_CMM_NT, S390_FEAT_CMM }, 457 { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, 458 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST }, 459 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, 460 { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 }, 461 { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA }, 462 { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA }, 463 { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA }, 464 { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA }, 465 { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA }, 466 { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA }, 467 { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA }, 468 { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA }, 469 { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA }, 470 { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA }, 471 { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA }, 472 { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA }, 473 { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 }, 474 { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 }, 475 { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 }, 476 { S390_FEAT_AP_QUERY_CONFIG_INFO, S390_FEAT_AP }, 477 { S390_FEAT_AP_FACILITIES_TEST, S390_FEAT_AP }, 478 { S390_FEAT_PTFF_QSIE, S390_FEAT_MULTIPLE_EPOCH }, 479 { S390_FEAT_PTFF_QTOUE, S390_FEAT_MULTIPLE_EPOCH }, 480 { S390_FEAT_PTFF_STOE, S390_FEAT_MULTIPLE_EPOCH }, 481 { S390_FEAT_PTFF_STOUE, S390_FEAT_MULTIPLE_EPOCH }, 482 { S390_FEAT_AP_QUEUE_INTERRUPT_CONTROL, S390_FEAT_AP }, 483 { S390_FEAT_DIAG_318, S390_FEAT_EXTENDED_LENGTH_SCCB }, 484 { S390_FEAT_NNPA, S390_FEAT_VECTOR }, 485 { S390_FEAT_RDP, S390_FEAT_LOCAL_TLB_CLEARING }, 486 { S390_FEAT_UV_FEAT_AP, S390_FEAT_AP }, 487 { S390_FEAT_UV_FEAT_AP_INTR, S390_FEAT_UV_FEAT_AP }, 488 }; 489 int i; 490 491 for (i = 0; i < ARRAY_SIZE(dep); i++) { 492 if (test_bit(dep[i][0], model->features) && 493 !test_bit(dep[i][1], model->features)) { 494 warn_report("\'%s\' requires \'%s\'.", 495 s390_feat_def(dep[i][0])->name, 496 s390_feat_def(dep[i][1])->name); 497 } 498 } 499 } 500 501 static void error_prepend_missing_feat(const char *name, void *opaque) 502 { 503 error_prepend((Error **) opaque, "%s ", name); 504 } 505 506 static void check_compatibility(const S390CPUModel *max_model, 507 const S390CPUModel *model, Error **errp) 508 { 509 S390FeatBitmap missing; 510 511 if (model->def->gen > max_model->def->gen) { 512 error_setg(errp, "Selected CPU generation is too new. Maximum " 513 "supported model in the configuration: \'%s\'", 514 max_model->def->name); 515 return; 516 } else if (model->def->gen == max_model->def->gen && 517 model->def->ec_ga > max_model->def->ec_ga) { 518 error_setg(errp, "Selected CPU GA level is too new. Maximum " 519 "supported model in the configuration: \'%s\'", 520 max_model->def->name); 521 return; 522 } 523 524 #ifndef CONFIG_USER_ONLY 525 if (only_migratable && test_bit(S390_FEAT_UNPACK, model->features)) { 526 error_setg(errp, "The unpack facility is not compatible with " 527 "the --only-migratable option. You must remove either " 528 "the 'unpack' facility or the --only-migratable option"); 529 return; 530 } 531 #endif 532 533 /* detect the missing features to properly report them */ 534 bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX); 535 if (bitmap_empty(missing, S390_FEAT_MAX)) { 536 return; 537 } 538 539 error_setg(errp, " "); 540 s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat); 541 error_prepend(errp, "Some features requested in the CPU model are not " 542 "available in the configuration: "); 543 } 544 545 S390CPUModel *get_max_cpu_model(Error **errp) 546 { 547 Error *err = NULL; 548 static S390CPUModel max_model; 549 static bool cached; 550 551 if (cached) { 552 return &max_model; 553 } 554 555 if (kvm_enabled()) { 556 kvm_s390_get_host_cpu_model(&max_model, &err); 557 } else { 558 max_model.def = s390_find_cpu_def(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 559 QEMU_MAX_CPU_EC_GA, NULL); 560 bitmap_copy(max_model.features, qemu_max_cpu_feat, S390_FEAT_MAX); 561 } 562 if (err) { 563 error_propagate(errp, err); 564 return NULL; 565 } 566 cached = true; 567 return &max_model; 568 } 569 570 void s390_realize_cpu_model(CPUState *cs, Error **errp) 571 { 572 Error *err = NULL; 573 S390CPUClass *xcc = S390_CPU_GET_CLASS(cs); 574 S390CPU *cpu = S390_CPU(cs); 575 const S390CPUModel *max_model; 576 577 if (xcc->kvm_required && !kvm_enabled()) { 578 error_setg(errp, "CPU definition requires KVM"); 579 return; 580 } 581 582 if (!cpu->model) { 583 /* no host model support -> perform compatibility stuff */ 584 apply_cpu_model(NULL, errp); 585 return; 586 } 587 588 max_model = get_max_cpu_model(errp); 589 if (!max_model) { 590 error_prepend(errp, "CPU models are not available: "); 591 return; 592 } 593 594 /* copy over properties that can vary */ 595 cpu->model->lowest_ibc = max_model->lowest_ibc; 596 cpu->model->cpu_id = max_model->cpu_id; 597 cpu->model->cpu_id_format = max_model->cpu_id_format; 598 cpu->model->cpu_ver = max_model->cpu_ver; 599 600 check_consistency(cpu->model); 601 check_compatibility(max_model, cpu->model, &err); 602 if (err) { 603 error_propagate(errp, err); 604 return; 605 } 606 607 apply_cpu_model(cpu->model, errp); 608 609 #if !defined(CONFIG_USER_ONLY) 610 cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model); 611 if (tcg_enabled()) { 612 cpu->env.cpuid = deposit64(cpu->env.cpuid, CPU_PHYS_ADDR_SHIFT, 613 CPU_PHYS_ADDR_BITS, cpu->env.core_id); 614 } 615 #endif 616 } 617 618 static void get_feature(Object *obj, Visitor *v, const char *name, 619 void *opaque, Error **errp) 620 { 621 S390Feat feat = (S390Feat) (uintptr_t) opaque; 622 S390CPU *cpu = S390_CPU(obj); 623 bool value; 624 625 if (!cpu->model) { 626 error_setg(errp, "Details about the host CPU model are not available, " 627 "features cannot be queried."); 628 return; 629 } 630 631 value = test_bit(feat, cpu->model->features); 632 visit_type_bool(v, name, &value, errp); 633 } 634 635 static void set_feature(Object *obj, Visitor *v, const char *name, 636 void *opaque, Error **errp) 637 { 638 S390Feat feat = (S390Feat) (uintptr_t) opaque; 639 DeviceState *dev = DEVICE(obj); 640 S390CPU *cpu = S390_CPU(obj); 641 bool value; 642 643 if (dev->realized) { 644 error_setg(errp, "Attempt to set property '%s' on '%s' after " 645 "it was realized", name, object_get_typename(obj)); 646 return; 647 } else if (!cpu->model) { 648 error_setg(errp, "Details about the host CPU model are not available, " 649 "features cannot be changed."); 650 return; 651 } 652 653 if (!visit_type_bool(v, name, &value, errp)) { 654 return; 655 } 656 if (value) { 657 if (!test_bit(feat, cpu->model->def->full_feat)) { 658 error_setg(errp, "Feature '%s' is not available for CPU model '%s'," 659 " it was introduced with later models.", 660 name, cpu->model->def->name); 661 return; 662 } 663 set_bit(feat, cpu->model->features); 664 } else { 665 clear_bit(feat, cpu->model->features); 666 } 667 } 668 669 static void get_feature_group(Object *obj, Visitor *v, const char *name, 670 void *opaque, Error **errp) 671 { 672 S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque; 673 const S390FeatGroupDef *def = s390_feat_group_def(group); 674 S390CPU *cpu = S390_CPU(obj); 675 S390FeatBitmap tmp; 676 bool value; 677 678 if (!cpu->model) { 679 error_setg(errp, "Details about the host CPU model are not available, " 680 "features cannot be queried."); 681 return; 682 } 683 684 /* a group is enabled if all features are enabled */ 685 bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX); 686 value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX); 687 visit_type_bool(v, name, &value, errp); 688 } 689 690 static void set_feature_group(Object *obj, Visitor *v, const char *name, 691 void *opaque, Error **errp) 692 { 693 S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque; 694 const S390FeatGroupDef *def = s390_feat_group_def(group); 695 DeviceState *dev = DEVICE(obj); 696 S390CPU *cpu = S390_CPU(obj); 697 bool value; 698 699 if (dev->realized) { 700 error_setg(errp, "Attempt to set property '%s' on '%s' after " 701 "it was realized", name, object_get_typename(obj)); 702 return; 703 } else if (!cpu->model) { 704 error_setg(errp, "Details about the host CPU model are not available, " 705 "features cannot be changed."); 706 return; 707 } 708 709 if (!visit_type_bool(v, name, &value, errp)) { 710 return; 711 } 712 if (value) { 713 /* groups are added in one shot, so an intersect is sufficient */ 714 if (!bitmap_intersects(def->feat, cpu->model->def->full_feat, 715 S390_FEAT_MAX)) { 716 error_setg(errp, "Group '%s' is not available for CPU model '%s'," 717 " it was introduced with later models.", 718 name, cpu->model->def->name); 719 return; 720 } 721 bitmap_or(cpu->model->features, cpu->model->features, def->feat, 722 S390_FEAT_MAX); 723 } else { 724 bitmap_andnot(cpu->model->features, cpu->model->features, def->feat, 725 S390_FEAT_MAX); 726 } 727 } 728 729 static void s390_cpu_model_initfn(Object *obj) 730 { 731 S390CPU *cpu = S390_CPU(obj); 732 S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu); 733 734 cpu->model = g_malloc0(sizeof(*cpu->model)); 735 /* copy the model, so we can modify it */ 736 cpu->model->def = xcc->cpu_def; 737 if (xcc->is_static) { 738 /* base model - features will never change */ 739 bitmap_copy(cpu->model->features, cpu->model->def->base_feat, 740 S390_FEAT_MAX); 741 } else { 742 /* latest model - features can change */ 743 bitmap_copy(cpu->model->features, 744 cpu->model->def->default_feat, S390_FEAT_MAX); 745 } 746 } 747 748 static S390CPUModel s390_qemu_cpu_model; 749 750 /* Set the qemu CPU model (on machine initialization). Must not be called 751 * once CPUs have been created. 752 */ 753 void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga, 754 const S390FeatInit feat_init) 755 { 756 const S390CPUDef *def = s390_find_cpu_def(type, gen, ec_ga, NULL); 757 758 g_assert(def); 759 g_assert(QTAILQ_EMPTY_RCU(&cpus)); 760 761 /* build the CPU model */ 762 s390_qemu_cpu_model.def = def; 763 bitmap_zero(s390_qemu_cpu_model.features, S390_FEAT_MAX); 764 s390_init_feat_bitmap(feat_init, s390_qemu_cpu_model.features); 765 } 766 767 static void s390_qemu_cpu_model_initfn(Object *obj) 768 { 769 S390CPU *cpu = S390_CPU(obj); 770 771 cpu->model = g_malloc0(sizeof(*cpu->model)); 772 /* copy the CPU model so we can modify it */ 773 memcpy(cpu->model, &s390_qemu_cpu_model, sizeof(*cpu->model)); 774 } 775 776 static void s390_max_cpu_model_initfn(Object *obj) 777 { 778 const S390CPUModel *max_model; 779 S390CPU *cpu = S390_CPU(obj); 780 Error *local_err = NULL; 781 782 if (kvm_enabled() && !kvm_s390_cpu_models_supported()) { 783 /* "max" and "host" always work, even without CPU model support */ 784 return; 785 } 786 787 max_model = get_max_cpu_model(&local_err); 788 if (local_err) { 789 /* we expect errors only under KVM, when actually querying the kernel */ 790 g_assert(kvm_enabled()); 791 error_report_err(local_err); 792 /* fallback to unsupported CPU models */ 793 return; 794 } 795 796 cpu->model = g_new(S390CPUModel, 1); 797 /* copy the CPU model so we can modify it */ 798 memcpy(cpu->model, max_model, sizeof(*cpu->model)); 799 } 800 801 static void s390_cpu_model_finalize(Object *obj) 802 { 803 S390CPU *cpu = S390_CPU(obj); 804 805 g_free(cpu->model); 806 cpu->model = NULL; 807 } 808 809 static bool get_is_migration_safe(Object *obj, Error **errp) 810 { 811 return S390_CPU_GET_CLASS(obj)->is_migration_safe; 812 } 813 814 static bool get_is_static(Object *obj, Error **errp) 815 { 816 return S390_CPU_GET_CLASS(obj)->is_static; 817 } 818 819 static char *get_description(Object *obj, Error **errp) 820 { 821 return g_strdup(S390_CPU_GET_CLASS(obj)->desc); 822 } 823 824 void s390_cpu_model_class_register_props(ObjectClass *oc) 825 { 826 S390FeatGroup group; 827 S390Feat feat; 828 829 object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe, 830 NULL); 831 object_class_property_add_bool(oc, "static", get_is_static, 832 NULL); 833 object_class_property_add_str(oc, "description", get_description, NULL); 834 835 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 836 const S390FeatDef *def = s390_feat_def(feat); 837 object_class_property_add(oc, def->name, "bool", get_feature, 838 set_feature, NULL, (void *) feat); 839 object_class_property_set_description(oc, def->name, def->desc); 840 } 841 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 842 const S390FeatGroupDef *def = s390_feat_group_def(group); 843 object_class_property_add(oc, def->name, "bool", get_feature_group, 844 set_feature_group, NULL, (void *) group); 845 object_class_property_set_description(oc, def->name, def->desc); 846 } 847 } 848 849 #ifdef CONFIG_KVM 850 static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data) 851 { 852 S390CPUClass *xcc = S390_CPU_CLASS(oc); 853 854 xcc->kvm_required = true; 855 xcc->desc = "KVM only: All recognized features"; 856 } 857 #endif 858 859 static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data) 860 { 861 S390CPUClass *xcc = S390_CPU_CLASS(oc); 862 863 /* all base models are migration safe */ 864 xcc->cpu_def = (const S390CPUDef *) data; 865 xcc->is_migration_safe = true; 866 xcc->is_static = true; 867 xcc->desc = xcc->cpu_def->desc; 868 } 869 870 static void s390_cpu_model_class_init(ObjectClass *oc, void *data) 871 { 872 S390CPUClass *xcc = S390_CPU_CLASS(oc); 873 874 /* model that can change between QEMU versions */ 875 xcc->cpu_def = (const S390CPUDef *) data; 876 xcc->is_migration_safe = true; 877 xcc->desc = xcc->cpu_def->desc; 878 } 879 880 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data) 881 { 882 S390CPUClass *xcc = S390_CPU_CLASS(oc); 883 884 xcc->is_migration_safe = true; 885 xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s", 886 qemu_hw_version()); 887 } 888 889 static void s390_max_cpu_model_class_init(ObjectClass *oc, void *data) 890 { 891 S390CPUClass *xcc = S390_CPU_CLASS(oc); 892 893 /* 894 * The "max" model is neither static nor migration safe. Under KVM 895 * it represents the "host" model. Under TCG it represents the "qemu" CPU 896 * model of the latest QEMU machine. 897 */ 898 xcc->desc = 899 "Enables all features supported by the accelerator in the current host"; 900 } 901 902 /* Generate type name for a cpu model. Caller has to free the string. */ 903 static char *s390_cpu_type_name(const char *model_name) 904 { 905 return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name); 906 } 907 908 /* Generate type name for a base cpu model. Caller has to free the string. */ 909 static char *s390_base_cpu_type_name(const char *model_name) 910 { 911 return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name); 912 } 913 914 ObjectClass *s390_cpu_class_by_name(const char *name) 915 { 916 char *typename = s390_cpu_type_name(name); 917 ObjectClass *oc; 918 919 oc = object_class_by_name(typename); 920 g_free(typename); 921 return oc; 922 } 923 924 static const TypeInfo qemu_s390_cpu_type_info = { 925 .name = S390_CPU_TYPE_NAME("qemu"), 926 .parent = TYPE_S390_CPU, 927 .instance_init = s390_qemu_cpu_model_initfn, 928 .instance_finalize = s390_cpu_model_finalize, 929 .class_init = s390_qemu_cpu_model_class_init, 930 }; 931 932 static const TypeInfo max_s390_cpu_type_info = { 933 .name = S390_CPU_TYPE_NAME("max"), 934 .parent = TYPE_S390_CPU, 935 .instance_init = s390_max_cpu_model_initfn, 936 .instance_finalize = s390_cpu_model_finalize, 937 .class_init = s390_max_cpu_model_class_init, 938 }; 939 940 #ifdef CONFIG_KVM 941 static const TypeInfo host_s390_cpu_type_info = { 942 .name = S390_CPU_TYPE_NAME("host"), 943 .parent = S390_CPU_TYPE_NAME("max"), 944 .class_init = s390_host_cpu_model_class_init, 945 }; 946 #endif 947 948 static void init_ignored_base_feat(void) 949 { 950 static const int feats[] = { 951 /* MSA subfunctions that could not be available on certain machines */ 952 S390_FEAT_KMAC_DEA, 953 S390_FEAT_KMAC_TDEA_128, 954 S390_FEAT_KMAC_TDEA_192, 955 S390_FEAT_KMC_DEA, 956 S390_FEAT_KMC_TDEA_128, 957 S390_FEAT_KMC_TDEA_192, 958 S390_FEAT_KM_DEA, 959 S390_FEAT_KM_TDEA_128, 960 S390_FEAT_KM_TDEA_192, 961 S390_FEAT_KIMD_SHA_1, 962 S390_FEAT_KLMD_SHA_1, 963 /* CSSKE is deprecated on newer generations */ 964 S390_FEAT_CONDITIONAL_SSKE, 965 }; 966 int i; 967 968 for (i = 0; i < ARRAY_SIZE(feats); i++) { 969 set_bit(feats[i], ignored_base_feat); 970 } 971 } 972 973 static void register_types(void) 974 { 975 static const S390FeatInit qemu_max_init = { S390_FEAT_LIST_QEMU_MAX }; 976 int i; 977 978 init_ignored_base_feat(); 979 980 /* init all bitmaps from generated data initially */ 981 s390_init_feat_bitmap(qemu_max_init, qemu_max_cpu_feat); 982 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 983 s390_init_feat_bitmap(s390_cpu_defs[i].base_init, 984 s390_cpu_defs[i].base_feat); 985 s390_init_feat_bitmap(s390_cpu_defs[i].default_init, 986 s390_cpu_defs[i].default_feat); 987 s390_init_feat_bitmap(s390_cpu_defs[i].full_init, 988 s390_cpu_defs[i].full_feat); 989 } 990 991 /* initialize the qemu model with the maximum definition ("max" model) */ 992 s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 993 QEMU_MAX_CPU_EC_GA, qemu_max_init); 994 995 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 996 char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name); 997 TypeInfo ti_base = { 998 .name = base_name, 999 .parent = TYPE_S390_CPU, 1000 .instance_init = s390_cpu_model_initfn, 1001 .instance_finalize = s390_cpu_model_finalize, 1002 .class_init = s390_base_cpu_model_class_init, 1003 .class_data = (void *) &s390_cpu_defs[i], 1004 }; 1005 char *name = s390_cpu_type_name(s390_cpu_defs[i].name); 1006 TypeInfo ti = { 1007 .name = name, 1008 .parent = TYPE_S390_CPU, 1009 .instance_init = s390_cpu_model_initfn, 1010 .instance_finalize = s390_cpu_model_finalize, 1011 .class_init = s390_cpu_model_class_init, 1012 .class_data = (void *) &s390_cpu_defs[i], 1013 }; 1014 1015 type_register_static(&ti_base); 1016 type_register_static(&ti); 1017 g_free(base_name); 1018 g_free(name); 1019 } 1020 1021 type_register_static(&qemu_s390_cpu_type_info); 1022 type_register_static(&max_s390_cpu_type_info); 1023 #ifdef CONFIG_KVM 1024 type_register_static(&host_s390_cpu_type_info); 1025 #endif 1026 } 1027 1028 type_init(register_types) 1029