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 "hw/s390x/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 }; 487 int i; 488 489 for (i = 0; i < ARRAY_SIZE(dep); i++) { 490 if (test_bit(dep[i][0], model->features) && 491 !test_bit(dep[i][1], model->features)) { 492 warn_report("\'%s\' requires \'%s\'.", 493 s390_feat_def(dep[i][0])->name, 494 s390_feat_def(dep[i][1])->name); 495 } 496 } 497 } 498 499 static void error_prepend_missing_feat(const char *name, void *opaque) 500 { 501 error_prepend((Error **) opaque, "%s ", name); 502 } 503 504 static void check_compatibility(const S390CPUModel *max_model, 505 const S390CPUModel *model, Error **errp) 506 { 507 S390FeatBitmap missing; 508 509 if (model->def->gen > max_model->def->gen) { 510 error_setg(errp, "Selected CPU generation is too new. Maximum " 511 "supported model in the configuration: \'%s\'", 512 max_model->def->name); 513 return; 514 } else if (model->def->gen == max_model->def->gen && 515 model->def->ec_ga > max_model->def->ec_ga) { 516 error_setg(errp, "Selected CPU GA level is too new. Maximum " 517 "supported model in the configuration: \'%s\'", 518 max_model->def->name); 519 return; 520 } 521 522 #ifndef CONFIG_USER_ONLY 523 if (only_migratable && test_bit(S390_FEAT_UNPACK, model->features)) { 524 error_setg(errp, "The unpack facility is not compatible with " 525 "the --only-migratable option. You must remove either " 526 "the 'unpack' facility or the --only-migratable option"); 527 return; 528 } 529 #endif 530 531 /* detect the missing features to properly report them */ 532 bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX); 533 if (bitmap_empty(missing, S390_FEAT_MAX)) { 534 return; 535 } 536 537 error_setg(errp, " "); 538 s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat); 539 error_prepend(errp, "Some features requested in the CPU model are not " 540 "available in the configuration: "); 541 } 542 543 S390CPUModel *get_max_cpu_model(Error **errp) 544 { 545 Error *err = NULL; 546 static S390CPUModel max_model; 547 static bool cached; 548 549 if (cached) { 550 return &max_model; 551 } 552 553 if (kvm_enabled()) { 554 kvm_s390_get_host_cpu_model(&max_model, &err); 555 } else { 556 max_model.def = s390_find_cpu_def(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 557 QEMU_MAX_CPU_EC_GA, NULL); 558 bitmap_copy(max_model.features, qemu_max_cpu_feat, S390_FEAT_MAX); 559 } 560 if (err) { 561 error_propagate(errp, err); 562 return NULL; 563 } 564 cached = true; 565 return &max_model; 566 } 567 568 void s390_realize_cpu_model(CPUState *cs, Error **errp) 569 { 570 Error *err = NULL; 571 S390CPUClass *xcc = S390_CPU_GET_CLASS(cs); 572 S390CPU *cpu = S390_CPU(cs); 573 const S390CPUModel *max_model; 574 575 if (xcc->kvm_required && !kvm_enabled()) { 576 error_setg(errp, "CPU definition requires KVM"); 577 return; 578 } 579 580 if (!cpu->model) { 581 /* no host model support -> perform compatibility stuff */ 582 apply_cpu_model(NULL, errp); 583 return; 584 } 585 586 max_model = get_max_cpu_model(errp); 587 if (!max_model) { 588 error_prepend(errp, "CPU models are not available: "); 589 return; 590 } 591 592 /* copy over properties that can vary */ 593 cpu->model->lowest_ibc = max_model->lowest_ibc; 594 cpu->model->cpu_id = max_model->cpu_id; 595 cpu->model->cpu_id_format = max_model->cpu_id_format; 596 cpu->model->cpu_ver = max_model->cpu_ver; 597 598 check_consistency(cpu->model); 599 check_compatibility(max_model, cpu->model, &err); 600 if (err) { 601 error_propagate(errp, err); 602 return; 603 } 604 605 apply_cpu_model(cpu->model, errp); 606 607 #if !defined(CONFIG_USER_ONLY) 608 cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model); 609 if (tcg_enabled()) { 610 cpu->env.cpuid = deposit64(cpu->env.cpuid, CPU_PHYS_ADDR_SHIFT, 611 CPU_PHYS_ADDR_BITS, cpu->env.core_id); 612 } 613 #endif 614 } 615 616 static void get_feature(Object *obj, Visitor *v, const char *name, 617 void *opaque, Error **errp) 618 { 619 S390Feat feat = (S390Feat) (uintptr_t) opaque; 620 S390CPU *cpu = S390_CPU(obj); 621 bool value; 622 623 if (!cpu->model) { 624 error_setg(errp, "Details about the host CPU model are not available, " 625 "features cannot be queried."); 626 return; 627 } 628 629 value = test_bit(feat, cpu->model->features); 630 visit_type_bool(v, name, &value, errp); 631 } 632 633 static void set_feature(Object *obj, Visitor *v, const char *name, 634 void *opaque, Error **errp) 635 { 636 S390Feat feat = (S390Feat) (uintptr_t) opaque; 637 DeviceState *dev = DEVICE(obj); 638 S390CPU *cpu = S390_CPU(obj); 639 bool value; 640 641 if (dev->realized) { 642 error_setg(errp, "Attempt to set property '%s' on '%s' after " 643 "it was realized", name, object_get_typename(obj)); 644 return; 645 } else if (!cpu->model) { 646 error_setg(errp, "Details about the host CPU model are not available, " 647 "features cannot be changed."); 648 return; 649 } 650 651 if (!visit_type_bool(v, name, &value, errp)) { 652 return; 653 } 654 if (value) { 655 if (!test_bit(feat, cpu->model->def->full_feat)) { 656 error_setg(errp, "Feature '%s' is not available for CPU model '%s'," 657 " it was introduced with later models.", 658 name, cpu->model->def->name); 659 return; 660 } 661 set_bit(feat, cpu->model->features); 662 } else { 663 clear_bit(feat, cpu->model->features); 664 } 665 } 666 667 static void get_feature_group(Object *obj, Visitor *v, const char *name, 668 void *opaque, Error **errp) 669 { 670 S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque; 671 const S390FeatGroupDef *def = s390_feat_group_def(group); 672 S390CPU *cpu = S390_CPU(obj); 673 S390FeatBitmap tmp; 674 bool value; 675 676 if (!cpu->model) { 677 error_setg(errp, "Details about the host CPU model are not available, " 678 "features cannot be queried."); 679 return; 680 } 681 682 /* a group is enabled if all features are enabled */ 683 bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX); 684 value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX); 685 visit_type_bool(v, name, &value, errp); 686 } 687 688 static void set_feature_group(Object *obj, Visitor *v, const char *name, 689 void *opaque, Error **errp) 690 { 691 S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque; 692 const S390FeatGroupDef *def = s390_feat_group_def(group); 693 DeviceState *dev = DEVICE(obj); 694 S390CPU *cpu = S390_CPU(obj); 695 bool value; 696 697 if (dev->realized) { 698 error_setg(errp, "Attempt to set property '%s' on '%s' after " 699 "it was realized", name, object_get_typename(obj)); 700 return; 701 } else if (!cpu->model) { 702 error_setg(errp, "Details about the host CPU model are not available, " 703 "features cannot be changed."); 704 return; 705 } 706 707 if (!visit_type_bool(v, name, &value, errp)) { 708 return; 709 } 710 if (value) { 711 /* groups are added in one shot, so an intersect is sufficient */ 712 if (!bitmap_intersects(def->feat, cpu->model->def->full_feat, 713 S390_FEAT_MAX)) { 714 error_setg(errp, "Group '%s' is not available for CPU model '%s'," 715 " it was introduced with later models.", 716 name, cpu->model->def->name); 717 return; 718 } 719 bitmap_or(cpu->model->features, cpu->model->features, def->feat, 720 S390_FEAT_MAX); 721 } else { 722 bitmap_andnot(cpu->model->features, cpu->model->features, def->feat, 723 S390_FEAT_MAX); 724 } 725 } 726 727 static void s390_cpu_model_initfn(Object *obj) 728 { 729 S390CPU *cpu = S390_CPU(obj); 730 S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu); 731 732 cpu->model = g_malloc0(sizeof(*cpu->model)); 733 /* copy the model, so we can modify it */ 734 cpu->model->def = xcc->cpu_def; 735 if (xcc->is_static) { 736 /* base model - features will never change */ 737 bitmap_copy(cpu->model->features, cpu->model->def->base_feat, 738 S390_FEAT_MAX); 739 } else { 740 /* latest model - features can change */ 741 bitmap_copy(cpu->model->features, 742 cpu->model->def->default_feat, S390_FEAT_MAX); 743 } 744 } 745 746 static S390CPUModel s390_qemu_cpu_model; 747 748 /* Set the qemu CPU model (on machine initialization). Must not be called 749 * once CPUs have been created. 750 */ 751 void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga, 752 const S390FeatInit feat_init) 753 { 754 const S390CPUDef *def = s390_find_cpu_def(type, gen, ec_ga, NULL); 755 756 g_assert(def); 757 g_assert(QTAILQ_EMPTY_RCU(&cpus)); 758 759 /* build the CPU model */ 760 s390_qemu_cpu_model.def = def; 761 bitmap_zero(s390_qemu_cpu_model.features, S390_FEAT_MAX); 762 s390_init_feat_bitmap(feat_init, s390_qemu_cpu_model.features); 763 } 764 765 static void s390_qemu_cpu_model_initfn(Object *obj) 766 { 767 S390CPU *cpu = S390_CPU(obj); 768 769 cpu->model = g_malloc0(sizeof(*cpu->model)); 770 /* copy the CPU model so we can modify it */ 771 memcpy(cpu->model, &s390_qemu_cpu_model, sizeof(*cpu->model)); 772 } 773 774 static void s390_max_cpu_model_initfn(Object *obj) 775 { 776 const S390CPUModel *max_model; 777 S390CPU *cpu = S390_CPU(obj); 778 Error *local_err = NULL; 779 780 if (kvm_enabled() && !kvm_s390_cpu_models_supported()) { 781 /* "max" and "host" always work, even without CPU model support */ 782 return; 783 } 784 785 max_model = get_max_cpu_model(&local_err); 786 if (local_err) { 787 /* we expect errors only under KVM, when actually querying the kernel */ 788 g_assert(kvm_enabled()); 789 error_report_err(local_err); 790 /* fallback to unsupported CPU models */ 791 return; 792 } 793 794 cpu->model = g_new(S390CPUModel, 1); 795 /* copy the CPU model so we can modify it */ 796 memcpy(cpu->model, max_model, sizeof(*cpu->model)); 797 } 798 799 static void s390_cpu_model_finalize(Object *obj) 800 { 801 S390CPU *cpu = S390_CPU(obj); 802 803 g_free(cpu->model); 804 cpu->model = NULL; 805 } 806 807 static bool get_is_migration_safe(Object *obj, Error **errp) 808 { 809 return S390_CPU_GET_CLASS(obj)->is_migration_safe; 810 } 811 812 static bool get_is_static(Object *obj, Error **errp) 813 { 814 return S390_CPU_GET_CLASS(obj)->is_static; 815 } 816 817 static char *get_description(Object *obj, Error **errp) 818 { 819 return g_strdup(S390_CPU_GET_CLASS(obj)->desc); 820 } 821 822 void s390_cpu_model_class_register_props(ObjectClass *oc) 823 { 824 S390FeatGroup group; 825 S390Feat feat; 826 827 object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe, 828 NULL); 829 object_class_property_add_bool(oc, "static", get_is_static, 830 NULL); 831 object_class_property_add_str(oc, "description", get_description, NULL); 832 833 for (feat = 0; feat < S390_FEAT_MAX; feat++) { 834 const S390FeatDef *def = s390_feat_def(feat); 835 object_class_property_add(oc, def->name, "bool", get_feature, 836 set_feature, NULL, (void *) feat); 837 object_class_property_set_description(oc, def->name, def->desc); 838 } 839 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { 840 const S390FeatGroupDef *def = s390_feat_group_def(group); 841 object_class_property_add(oc, def->name, "bool", get_feature_group, 842 set_feature_group, NULL, (void *) group); 843 object_class_property_set_description(oc, def->name, def->desc); 844 } 845 } 846 847 #ifdef CONFIG_KVM 848 static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data) 849 { 850 S390CPUClass *xcc = S390_CPU_CLASS(oc); 851 852 xcc->kvm_required = true; 853 xcc->desc = "KVM only: All recognized features"; 854 } 855 #endif 856 857 static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data) 858 { 859 S390CPUClass *xcc = S390_CPU_CLASS(oc); 860 861 /* all base models are migration safe */ 862 xcc->cpu_def = (const S390CPUDef *) data; 863 xcc->is_migration_safe = true; 864 xcc->is_static = true; 865 xcc->desc = xcc->cpu_def->desc; 866 } 867 868 static void s390_cpu_model_class_init(ObjectClass *oc, void *data) 869 { 870 S390CPUClass *xcc = S390_CPU_CLASS(oc); 871 872 /* model that can change between QEMU versions */ 873 xcc->cpu_def = (const S390CPUDef *) data; 874 xcc->is_migration_safe = true; 875 xcc->desc = xcc->cpu_def->desc; 876 } 877 878 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data) 879 { 880 S390CPUClass *xcc = S390_CPU_CLASS(oc); 881 882 xcc->is_migration_safe = true; 883 xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s", 884 qemu_hw_version()); 885 } 886 887 static void s390_max_cpu_model_class_init(ObjectClass *oc, void *data) 888 { 889 S390CPUClass *xcc = S390_CPU_CLASS(oc); 890 891 /* 892 * The "max" model is neither static nor migration safe. Under KVM 893 * it represents the "host" model. Under TCG it represents the "qemu" CPU 894 * model of the latest QEMU machine. 895 */ 896 xcc->desc = 897 "Enables all features supported by the accelerator in the current host"; 898 } 899 900 /* Generate type name for a cpu model. Caller has to free the string. */ 901 static char *s390_cpu_type_name(const char *model_name) 902 { 903 return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name); 904 } 905 906 /* Generate type name for a base cpu model. Caller has to free the string. */ 907 static char *s390_base_cpu_type_name(const char *model_name) 908 { 909 return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name); 910 } 911 912 ObjectClass *s390_cpu_class_by_name(const char *name) 913 { 914 char *typename = s390_cpu_type_name(name); 915 ObjectClass *oc; 916 917 oc = object_class_by_name(typename); 918 g_free(typename); 919 return oc; 920 } 921 922 static const TypeInfo qemu_s390_cpu_type_info = { 923 .name = S390_CPU_TYPE_NAME("qemu"), 924 .parent = TYPE_S390_CPU, 925 .instance_init = s390_qemu_cpu_model_initfn, 926 .instance_finalize = s390_cpu_model_finalize, 927 .class_init = s390_qemu_cpu_model_class_init, 928 }; 929 930 static const TypeInfo max_s390_cpu_type_info = { 931 .name = S390_CPU_TYPE_NAME("max"), 932 .parent = TYPE_S390_CPU, 933 .instance_init = s390_max_cpu_model_initfn, 934 .instance_finalize = s390_cpu_model_finalize, 935 .class_init = s390_max_cpu_model_class_init, 936 }; 937 938 #ifdef CONFIG_KVM 939 static const TypeInfo host_s390_cpu_type_info = { 940 .name = S390_CPU_TYPE_NAME("host"), 941 .parent = S390_CPU_TYPE_NAME("max"), 942 .class_init = s390_host_cpu_model_class_init, 943 }; 944 #endif 945 946 static void init_ignored_base_feat(void) 947 { 948 static const int feats[] = { 949 /* MSA subfunctions that could not be available on certain machines */ 950 S390_FEAT_KMAC_DEA, 951 S390_FEAT_KMAC_TDEA_128, 952 S390_FEAT_KMAC_TDEA_192, 953 S390_FEAT_KMC_DEA, 954 S390_FEAT_KMC_TDEA_128, 955 S390_FEAT_KMC_TDEA_192, 956 S390_FEAT_KM_DEA, 957 S390_FEAT_KM_TDEA_128, 958 S390_FEAT_KM_TDEA_192, 959 S390_FEAT_KIMD_SHA_1, 960 S390_FEAT_KLMD_SHA_1, 961 /* CSSKE is deprecated on newer generations */ 962 S390_FEAT_CONDITIONAL_SSKE, 963 }; 964 int i; 965 966 for (i = 0; i < ARRAY_SIZE(feats); i++) { 967 set_bit(feats[i], ignored_base_feat); 968 } 969 } 970 971 static void register_types(void) 972 { 973 static const S390FeatInit qemu_max_init = { S390_FEAT_LIST_QEMU_MAX }; 974 int i; 975 976 init_ignored_base_feat(); 977 978 /* init all bitmaps from gnerated data initially */ 979 s390_init_feat_bitmap(qemu_max_init, qemu_max_cpu_feat); 980 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 981 s390_init_feat_bitmap(s390_cpu_defs[i].base_init, 982 s390_cpu_defs[i].base_feat); 983 s390_init_feat_bitmap(s390_cpu_defs[i].default_init, 984 s390_cpu_defs[i].default_feat); 985 s390_init_feat_bitmap(s390_cpu_defs[i].full_init, 986 s390_cpu_defs[i].full_feat); 987 } 988 989 /* initialize the qemu model with the maximum definition ("max" model) */ 990 s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, 991 QEMU_MAX_CPU_EC_GA, qemu_max_init); 992 993 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { 994 char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name); 995 TypeInfo ti_base = { 996 .name = base_name, 997 .parent = TYPE_S390_CPU, 998 .instance_init = s390_cpu_model_initfn, 999 .instance_finalize = s390_cpu_model_finalize, 1000 .class_init = s390_base_cpu_model_class_init, 1001 .class_data = (void *) &s390_cpu_defs[i], 1002 }; 1003 char *name = s390_cpu_type_name(s390_cpu_defs[i].name); 1004 TypeInfo ti = { 1005 .name = name, 1006 .parent = TYPE_S390_CPU, 1007 .instance_init = s390_cpu_model_initfn, 1008 .instance_finalize = s390_cpu_model_finalize, 1009 .class_init = s390_cpu_model_class_init, 1010 .class_data = (void *) &s390_cpu_defs[i], 1011 }; 1012 1013 type_register_static(&ti_base); 1014 type_register_static(&ti); 1015 g_free(base_name); 1016 g_free(name); 1017 } 1018 1019 type_register_static(&qemu_s390_cpu_type_info); 1020 type_register_static(&max_s390_cpu_type_info); 1021 #ifdef CONFIG_KVM 1022 type_register_static(&host_s390_cpu_type_info); 1023 #endif 1024 } 1025 1026 type_init(register_types) 1027