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