| 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 "system/kvm.h" |
| 18 | #include "system/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 "system/system.h" |
| 27 | #include "target/s390x/kvm/pv.h" |
| 28 | #include CONFIG_DEVICES |
| 29 | #endif |
| 30 | |
| 31 | #define CPUDEF_INIT(_type, _gen, _ec_ga, _mha_pow, _hmfai, _name, _desc) \ |
| 32 | { \ |
| 33 | .name = _name, \ |
| 34 | .type = _type, \ |
| 35 | .gen = _gen, \ |
| 36 | .ec_ga = _ec_ga, \ |
| 37 | .mha_pow = _mha_pow, \ |
| 38 | .hmfai = _hmfai, \ |
| 39 | .desc = _desc, \ |
| 40 | .base_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _BASE }, \ |
| 41 | .default_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _DEFAULT }, \ |
| 42 | .full_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _FULL }, \ |
| 43 | } |
| 44 | |
| 45 | /* |
| 46 | * CPU definition list in order of release. Up to generation 14 base features |
| 47 | * of a following release have been a superset of the previous release. With |
| 48 | * generation 15 one base feature and one optional feature have been deprecated. |
| 49 | */ |
| 50 | static S390CPUDef s390_cpu_defs[] = { |
| 51 | /* |
| 52 | * Linux requires at least z10 nowadays, and IBM only supports recent CPUs |
| 53 | * (see https://www.ibm.com/support/pages/ibm-mainframe-life-cycle-history), |
| 54 | * so we consider older CPUs as legacy that can optionally be disabled via |
| 55 | * the CONFIG_S390X_LEGACY_CPUS config switch. |
| 56 | */ |
| 57 | #if defined(CONFIG_S390X_LEGACY_CPUS) || defined(CONFIG_USER_ONLY) |
| 58 | CPUDEF_INIT(0x2064, 7, 1, 38, 0x00000000U, "z900", "IBM zSeries 900 GA1"), |
| 59 | CPUDEF_INIT(0x2064, 7, 2, 38, 0x00000000U, "z900.2", "IBM zSeries 900 GA2"), |
| 60 | CPUDEF_INIT(0x2064, 7, 3, 38, 0x00000000U, "z900.3", "IBM zSeries 900 GA3"), |
| 61 | CPUDEF_INIT(0x2066, 7, 3, 38, 0x00000000U, "z800", "IBM zSeries 800 GA1"), |
| 62 | CPUDEF_INIT(0x2084, 8, 1, 38, 0x00000000U, "z990", "IBM zSeries 990 GA1"), |
| 63 | CPUDEF_INIT(0x2084, 8, 2, 38, 0x00000000U, "z990.2", "IBM zSeries 990 GA2"), |
| 64 | CPUDEF_INIT(0x2084, 8, 3, 38, 0x00000000U, "z990.3", "IBM zSeries 990 GA3"), |
| 65 | CPUDEF_INIT(0x2086, 8, 3, 38, 0x00000000U, "z890", "IBM zSeries 880 GA1"), |
| 66 | CPUDEF_INIT(0x2084, 8, 4, 38, 0x00000000U, "z990.4", "IBM zSeries 990 GA4"), |
| 67 | CPUDEF_INIT(0x2086, 8, 4, 38, 0x00000000U, "z890.2", "IBM zSeries 880 GA2"), |
| 68 | CPUDEF_INIT(0x2084, 8, 5, 38, 0x00000000U, "z990.5", "IBM zSeries 990 GA5"), |
| 69 | CPUDEF_INIT(0x2086, 8, 5, 38, 0x00000000U, "z890.3", "IBM zSeries 880 GA3"), |
| 70 | CPUDEF_INIT(0x2094, 9, 1, 40, 0x00000000U, "z9EC", "IBM System z9 EC GA1"), |
| 71 | CPUDEF_INIT(0x2094, 9, 2, 40, 0x00000000U, "z9EC.2", "IBM System z9 EC GA2"), |
| 72 | CPUDEF_INIT(0x2096, 9, 2, 40, 0x00000000U, "z9BC", "IBM System z9 BC GA1"), |
| 73 | CPUDEF_INIT(0x2094, 9, 3, 40, 0x00000000U, "z9EC.3", "IBM System z9 EC GA3"), |
| 74 | CPUDEF_INIT(0x2096, 9, 3, 40, 0x00000000U, "z9BC.2", "IBM System z9 BC GA2"), |
| 75 | #endif |
| 76 | CPUDEF_INIT(0x2097, 10, 1, 43, 0x00000000U, "z10EC", "IBM System z10 EC GA1"), |
| 77 | CPUDEF_INIT(0x2097, 10, 2, 43, 0x00000000U, "z10EC.2", "IBM System z10 EC GA2"), |
| 78 | CPUDEF_INIT(0x2098, 10, 2, 43, 0x00000000U, "z10BC", "IBM System z10 BC GA1"), |
| 79 | CPUDEF_INIT(0x2097, 10, 3, 43, 0x00000000U, "z10EC.3", "IBM System z10 EC GA3"), |
| 80 | CPUDEF_INIT(0x2098, 10, 3, 43, 0x00000000U, "z10BC.2", "IBM System z10 BC GA2"), |
| 81 | CPUDEF_INIT(0x2817, 11, 1, 44, 0x08000000U, "z196", "IBM zEnterprise 196 GA1"), |
| 82 | CPUDEF_INIT(0x2817, 11, 2, 44, 0x08000000U, "z196.2", "IBM zEnterprise 196 GA2"), |
| 83 | CPUDEF_INIT(0x2818, 11, 2, 44, 0x08000000U, "z114", "IBM zEnterprise 114 GA1"), |
| 84 | CPUDEF_INIT(0x2827, 12, 1, 44, 0x08000000U, "zEC12", "IBM zEnterprise EC12 GA1"), |
| 85 | CPUDEF_INIT(0x2827, 12, 2, 44, 0x08000000U, "zEC12.2", "IBM zEnterprise EC12 GA2"), |
| 86 | CPUDEF_INIT(0x2828, 12, 2, 44, 0x08000000U, "zBC12", "IBM zEnterprise BC12 GA1"), |
| 87 | CPUDEF_INIT(0x2964, 13, 1, 47, 0x08000000U, "z13", "IBM z13 GA1"), |
| 88 | CPUDEF_INIT(0x2964, 13, 2, 47, 0x08000000U, "z13.2", "IBM z13 GA2"), |
| 89 | CPUDEF_INIT(0x2965, 13, 2, 47, 0x08000000U, "z13s", "IBM z13s GA1"), |
| 90 | CPUDEF_INIT(0x3906, 14, 1, 47, 0x08000000U, "z14", "IBM z14 GA1"), |
| 91 | CPUDEF_INIT(0x3906, 14, 2, 47, 0x08000000U, "z14.2", "IBM z14 GA2"), |
| 92 | CPUDEF_INIT(0x3907, 14, 1, 47, 0x08000000U, "z14ZR1", "IBM z14 Model ZR1 GA1"), |
| 93 | CPUDEF_INIT(0x8561, 15, 1, 47, 0x08000000U, "gen15a", "IBM z15 T01 GA1"), |
| 94 | CPUDEF_INIT(0x8562, 15, 1, 47, 0x08000000U, "gen15b", "IBM z15 T02 GA1"), |
| 95 | CPUDEF_INIT(0x3931, 16, 1, 47, 0x08000000U, "gen16a", "IBM 3931 GA1"), |
| 96 | CPUDEF_INIT(0x3932, 16, 1, 47, 0x08000000U, "gen16b", "IBM 3932 GA1"), |
| 97 | CPUDEF_INIT(0x9175, 17, 1, 47, 0x08000000U, "gen17a", "IBM 9175 GA1"), |
| 98 | CPUDEF_INIT(0x9176, 17, 1, 47, 0x08000000U, "gen17b", "IBM 9176 GA1"), |
| 99 | }; |
| 100 | |
| 101 | #define QEMU_MAX_CPU_TYPE 0x8561 |
| 102 | #define QEMU_MAX_CPU_GEN 15 |
| 103 | #define QEMU_MAX_CPU_EC_GA 1 |
| 104 | static S390FeatBitmap qemu_max_cpu_feat; |
| 105 | |
| 106 | /* features part of a base model but not relevant for finding a base model */ |
| 107 | S390FeatBitmap ignored_base_feat; |
| 108 | |
| 109 | void s390_cpudef_featoff(uint8_t gen, uint8_t ec_ga, S390Feat feat) |
| 110 | { |
| 111 | const S390CPUDef *def; |
| 112 | |
| 113 | def = s390_find_cpu_def(0, gen, ec_ga, NULL); |
| 114 | clear_bit(feat, (unsigned long *)&def->default_feat); |
| 115 | } |
| 116 | |
| 117 | void s390_cpudef_featoff_greater(uint8_t gen, uint8_t ec_ga, S390Feat feat) |
| 118 | { |
| 119 | int i; |
| 120 | |
| 121 | for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { |
| 122 | const S390CPUDef *def = &s390_cpu_defs[i]; |
| 123 | |
| 124 | if (def->gen < gen) { |
| 125 | continue; |
| 126 | } |
| 127 | if (def->gen == gen && def->ec_ga < ec_ga) { |
| 128 | continue; |
| 129 | } |
| 130 | |
| 131 | clear_bit(feat, (unsigned long *)&def->default_feat); |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | void s390_cpudef_group_featoff_greater(uint8_t gen, uint8_t ec_ga, |
| 136 | S390FeatGroup group) |
| 137 | { |
| 138 | const S390FeatGroupDef *group_def = s390_feat_group_def(group); |
| 139 | S390FeatBitmap group_def_off; |
| 140 | int i; |
| 141 | |
| 142 | bitmap_complement(group_def_off, group_def->feat, S390_FEAT_MAX); |
| 143 | |
| 144 | for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { |
| 145 | const S390CPUDef *cpu_def = &s390_cpu_defs[i]; |
| 146 | |
| 147 | if (cpu_def->gen < gen) { |
| 148 | continue; |
| 149 | } |
| 150 | if (cpu_def->gen == gen && cpu_def->ec_ga < ec_ga) { |
| 151 | continue; |
| 152 | } |
| 153 | |
| 154 | bitmap_and((unsigned long *)&cpu_def->default_feat, |
| 155 | cpu_def->default_feat, group_def_off, S390_FEAT_MAX); |
| 156 | } |
| 157 | } |
| 158 | |
| 159 | uint32_t s390_get_hmfai(void) |
| 160 | { |
| 161 | static S390CPU *cpu; |
| 162 | |
| 163 | if (!cpu) { |
| 164 | cpu = S390_CPU(qemu_get_cpu(0)); |
| 165 | } |
| 166 | |
| 167 | if (!cpu || !cpu->model) { |
| 168 | return 0; |
| 169 | } |
| 170 | return cpu->model->def->hmfai; |
| 171 | } |
| 172 | |
| 173 | uint8_t s390_get_mha_pow(void) |
| 174 | { |
| 175 | static S390CPU *cpu; |
| 176 | |
| 177 | if (!cpu) { |
| 178 | cpu = S390_CPU(qemu_get_cpu(0)); |
| 179 | } |
| 180 | |
| 181 | if (!cpu || !cpu->model) { |
| 182 | return 0; |
| 183 | } |
| 184 | return cpu->model->def->mha_pow; |
| 185 | } |
| 186 | |
| 187 | uint32_t s390_get_ibc_val(void) |
| 188 | { |
| 189 | uint16_t unblocked_ibc, lowest_ibc; |
| 190 | static S390CPU *cpu; |
| 191 | |
| 192 | if (!cpu) { |
| 193 | cpu = S390_CPU(qemu_get_cpu(0)); |
| 194 | } |
| 195 | |
| 196 | if (!cpu || !cpu->model) { |
| 197 | return 0; |
| 198 | } |
| 199 | unblocked_ibc = s390_ibc_from_cpu_model(cpu->model); |
| 200 | lowest_ibc = cpu->model->lowest_ibc; |
| 201 | /* the lowest_ibc always has to be <= unblocked_ibc */ |
| 202 | if (!lowest_ibc || lowest_ibc > unblocked_ibc) { |
| 203 | return 0; |
| 204 | } |
| 205 | return ((uint32_t) lowest_ibc << 16) | unblocked_ibc; |
| 206 | } |
| 207 | |
| 208 | void s390_get_feat_block(S390FeatType type, uint8_t *data) |
| 209 | { |
| 210 | S390CPU *cpu = S390_CPU(first_cpu); |
| 211 | |
| 212 | if (!cpu || !cpu->model) { |
| 213 | return; |
| 214 | } |
| 215 | s390_fill_feat_block(cpu->model->features, type, data); |
| 216 | } |
| 217 | |
| 218 | bool s390_has_feat(S390Feat feat) |
| 219 | { |
| 220 | static S390CPU *cpu; |
| 221 | |
| 222 | if (!cpu) { |
| 223 | cpu = S390_CPU(qemu_get_cpu(0)); |
| 224 | } |
| 225 | |
| 226 | if (!cpu || !cpu->model) { |
| 227 | #ifdef CONFIG_KVM |
| 228 | if (kvm_enabled()) { |
| 229 | if (feat == S390_FEAT_VECTOR) { |
| 230 | return kvm_check_extension(kvm_state, |
| 231 | KVM_CAP_S390_VECTOR_REGISTERS); |
| 232 | } |
| 233 | if (feat == S390_FEAT_RUNTIME_INSTRUMENTATION) { |
| 234 | return kvm_s390_get_ri(); |
| 235 | } |
| 236 | if (feat == S390_FEAT_MSA_EXT_3) { |
| 237 | return true; |
| 238 | } |
| 239 | } |
| 240 | #endif |
| 241 | if (feat == S390_FEAT_ZPCI) { |
| 242 | return true; |
| 243 | } |
| 244 | return 0; |
| 245 | } |
| 246 | |
| 247 | #ifndef CONFIG_USER_ONLY |
| 248 | if (s390_is_pv()) { |
| 249 | switch (feat) { |
| 250 | case S390_FEAT_DIAG_318: |
| 251 | case S390_FEAT_CERT_STORE: |
| 252 | case S390_FEAT_HPMA2: |
| 253 | case S390_FEAT_SIE_F2: |
| 254 | case S390_FEAT_SIE_SKEY: |
| 255 | case S390_FEAT_SIE_GPERE: |
| 256 | case S390_FEAT_SIE_SIIF: |
| 257 | case S390_FEAT_SIE_SIGPIF: |
| 258 | case S390_FEAT_SIE_IB: |
| 259 | case S390_FEAT_SIE_CEI: |
| 260 | case S390_FEAT_SIE_KSS: |
| 261 | case S390_FEAT_SIE_GSLS: |
| 262 | case S390_FEAT_SIE_64BSCAO: |
| 263 | case S390_FEAT_SIE_CMMA: |
| 264 | case S390_FEAT_SIE_PFMFI: |
| 265 | case S390_FEAT_SIE_IBS: |
| 266 | case S390_FEAT_SIPL: |
| 267 | case S390_FEAT_SCLAF: |
| 268 | case S390_FEAT_CONFIGURATION_TOPOLOGY: |
| 269 | case S390_FEAT_SIE_ASTFLEIE2: |
| 270 | return false; |
| 271 | break; |
| 272 | default: |
| 273 | break; |
| 274 | } |
| 275 | } |
| 276 | #endif |
| 277 | return test_bit(feat, cpu->model->features); |
| 278 | } |
| 279 | |
| 280 | uint8_t s390_get_gen_for_cpu_type(uint16_t type) |
| 281 | { |
| 282 | int i; |
| 283 | |
| 284 | for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { |
| 285 | if (s390_cpu_defs[i].type == type) { |
| 286 | return s390_cpu_defs[i].gen; |
| 287 | } |
| 288 | } |
| 289 | return 0; |
| 290 | } |
| 291 | |
| 292 | const S390CPUDef *s390_find_cpu_def(uint16_t type, uint8_t gen, uint8_t ec_ga, |
| 293 | S390FeatBitmap features) |
| 294 | { |
| 295 | const S390CPUDef *last_compatible = NULL; |
| 296 | const S390CPUDef *matching_cpu_type = NULL; |
| 297 | int i; |
| 298 | |
| 299 | if (!gen) { |
| 300 | ec_ga = 0; |
| 301 | } |
| 302 | if (!gen && type) { |
| 303 | gen = s390_get_gen_for_cpu_type(type); |
| 304 | } |
| 305 | |
| 306 | for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { |
| 307 | const S390CPUDef *def = &s390_cpu_defs[i]; |
| 308 | S390FeatBitmap missing; |
| 309 | |
| 310 | /* don't even try newer generations if we know the generation */ |
| 311 | if (gen) { |
| 312 | if (def->gen > gen) { |
| 313 | break; |
| 314 | } else if (def->gen == gen && ec_ga && def->ec_ga > ec_ga) { |
| 315 | break; |
| 316 | } |
| 317 | } |
| 318 | |
| 319 | if (features) { |
| 320 | /* see if the model satisfies the minimum features */ |
| 321 | bitmap_andnot(missing, def->base_feat, features, S390_FEAT_MAX); |
| 322 | /* |
| 323 | * Ignore certain features that are in the base model, but not |
| 324 | * relevant for the search (esp. MSA subfunctions). |
| 325 | */ |
| 326 | bitmap_andnot(missing, missing, ignored_base_feat, S390_FEAT_MAX); |
| 327 | if (!bitmap_empty(missing, S390_FEAT_MAX)) { |
| 328 | break; |
| 329 | } |
| 330 | } |
| 331 | |
| 332 | /* stop the search if we found the exact model */ |
| 333 | if (def->type == type && def->ec_ga == ec_ga) { |
| 334 | return def; |
| 335 | } |
| 336 | /* remember if we've at least seen one with the same cpu type */ |
| 337 | if (def->type == type) { |
| 338 | matching_cpu_type = def; |
| 339 | } |
| 340 | last_compatible = def; |
| 341 | } |
| 342 | /* prefer the model with the same cpu type, esp. don't take the BC for EC */ |
| 343 | if (matching_cpu_type) { |
| 344 | return matching_cpu_type; |
| 345 | } |
| 346 | return last_compatible; |
| 347 | } |
| 348 | |
| 349 | static void s390_print_cpu_model_list_entry(gpointer data, gpointer user_data) |
| 350 | { |
| 351 | const S390CPUClass *scc = S390_CPU_CLASS((ObjectClass *)data); |
| 352 | CPUClass *cc = CPU_CLASS(scc); |
| 353 | char *name = g_strdup(object_class_get_name((ObjectClass *)data)); |
| 354 | g_autoptr(GString) details = g_string_new(""); |
| 355 | |
| 356 | if (scc->is_static) { |
| 357 | g_string_append(details, "static, "); |
| 358 | } |
| 359 | if (scc->is_migration_safe) { |
| 360 | g_string_append(details, "migration-safe, "); |
| 361 | } |
| 362 | if (cc->deprecation_note) { |
| 363 | g_string_append(details, "deprecated, "); |
| 364 | } |
| 365 | if (details->len) { |
| 366 | /* cull trailing ', ' */ |
| 367 | g_string_truncate(details, details->len - 2); |
| 368 | } |
| 369 | |
| 370 | /* strip off the -s390x-cpu */ |
| 371 | g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; |
| 372 | if (details->len) { |
| 373 | qemu_printf(" %-15s %-35s (%s)\n", name, scc->desc, details->str); |
| 374 | } else { |
| 375 | qemu_printf(" %-15s %-35s\n", name, scc->desc); |
| 376 | } |
| 377 | g_free(name); |
| 378 | } |
| 379 | |
| 380 | static gint s390_cpu_list_compare(gconstpointer a, gconstpointer b, gpointer d) |
| 381 | { |
| 382 | const S390CPUClass *cc_a = S390_CPU_CLASS((ObjectClass *)a); |
| 383 | const S390CPUClass *cc_b = S390_CPU_CLASS((ObjectClass *)b); |
| 384 | const char *name_a = object_class_get_name((ObjectClass *)a); |
| 385 | const char *name_b = object_class_get_name((ObjectClass *)b); |
| 386 | |
| 387 | /* |
| 388 | * Move qemu, host and max to the top of the list, qemu first, host second, |
| 389 | * max third. |
| 390 | */ |
| 391 | if (name_a[0] == 'q') { |
| 392 | return -1; |
| 393 | } else if (name_b[0] == 'q') { |
| 394 | return 1; |
| 395 | } else if (name_a[0] == 'h') { |
| 396 | return -1; |
| 397 | } else if (name_b[0] == 'h') { |
| 398 | return 1; |
| 399 | } else if (name_a[0] == 'm') { |
| 400 | return -1; |
| 401 | } else if (name_b[0] == 'm') { |
| 402 | return 1; |
| 403 | } |
| 404 | |
| 405 | /* keep the same order we have in our table (sorted by release date) */ |
| 406 | if (cc_a->cpu_def != cc_b->cpu_def) { |
| 407 | return cc_a->cpu_def - cc_b->cpu_def; |
| 408 | } |
| 409 | |
| 410 | /* exact same definition - list base model first */ |
| 411 | return cc_a->is_static ? -1 : 1; |
| 412 | } |
| 413 | |
| 414 | void s390_cpu_list(void) |
| 415 | { |
| 416 | S390FeatGroup group; |
| 417 | S390Feat feat; |
| 418 | GSList *list; |
| 419 | |
| 420 | qemu_printf("Available CPUs:\n"); |
| 421 | list = object_class_get_list(TYPE_S390_CPU, false); |
| 422 | list = g_slist_sort_with_data(list, s390_cpu_list_compare, NULL); |
| 423 | g_slist_foreach(list, s390_print_cpu_model_list_entry, NULL); |
| 424 | g_slist_free(list); |
| 425 | |
| 426 | qemu_printf("\nRecognized feature flags:\n"); |
| 427 | for (feat = 0; feat < S390_FEAT_MAX; feat++) { |
| 428 | const S390FeatDef *def = s390_feat_def(feat); |
| 429 | |
| 430 | qemu_printf(" %-20s %s\n", def->name, def->desc); |
| 431 | } |
| 432 | |
| 433 | qemu_printf("\nRecognized feature groups:\n"); |
| 434 | for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { |
| 435 | const S390FeatGroupDef *def = s390_feat_group_def(group); |
| 436 | |
| 437 | qemu_printf(" %-20s %s\n", def->name, def->desc); |
| 438 | } |
| 439 | } |
| 440 | |
| 441 | static void check_consistency(const S390CPUModel *model) |
| 442 | { |
| 443 | static int dep[][2] = { |
| 444 | { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH }, |
| 445 | { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH }, |
| 446 | { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH }, |
| 447 | { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT }, |
| 448 | { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH}, |
| 449 | { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT }, |
| 450 | { S390_FEAT_DFP_FAST, S390_FEAT_DFP }, |
| 451 | { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 }, |
| 452 | { S390_FEAT_EDAT_2, S390_FEAT_EDAT}, |
| 453 | { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 }, |
| 454 | { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 }, |
| 455 | { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 }, |
| 456 | { S390_FEAT_SIE_CMMA, S390_FEAT_CMM }, |
| 457 | { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS }, |
| 458 | { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT }, |
| 459 | { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 }, |
| 460 | { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_3 }, |
| 461 | { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_4 }, |
| 462 | { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, |
| 463 | { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR }, |
| 464 | { S390_FEAT_VECTOR_PACKED_DECIMAL_ENH, S390_FEAT_VECTOR_PACKED_DECIMAL }, |
| 465 | { S390_FEAT_VECTOR_PACKED_DECIMAL_ENH2, S390_FEAT_VECTOR_PACKED_DECIMAL_ENH }, |
| 466 | { S390_FEAT_VECTOR_PACKED_DECIMAL_ENH3, S390_FEAT_VECTOR_PACKED_DECIMAL_ENH2 }, |
| 467 | { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR }, |
| 468 | { S390_FEAT_VECTOR_ENH2, S390_FEAT_VECTOR_ENH }, |
| 469 | { S390_FEAT_VECTOR_ENH3, S390_FEAT_VECTOR_ENH2 }, |
| 470 | { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, |
| 471 | { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP }, |
| 472 | { S390_FEAT_CMM_NT, S390_FEAT_CMM }, |
| 473 | { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, |
| 474 | { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST }, |
| 475 | { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, |
| 476 | { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 }, |
| 477 | { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA }, |
| 478 | { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA }, |
| 479 | { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA }, |
| 480 | { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA }, |
| 481 | { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA }, |
| 482 | { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA }, |
| 483 | { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA }, |
| 484 | { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA }, |
| 485 | { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA }, |
| 486 | { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA }, |
| 487 | { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA }, |
| 488 | { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA }, |
| 489 | { S390_FEAT_KMAC_HMAC_SHA_224, S390_FEAT_MSA_EXT_3 }, |
| 490 | { S390_FEAT_KMAC_HMAC_SHA_256, S390_FEAT_MSA_EXT_3 }, |
| 491 | { S390_FEAT_KMAC_HMAC_SHA_384, S390_FEAT_MSA_EXT_3 }, |
| 492 | { S390_FEAT_KMAC_HMAC_SHA_512, S390_FEAT_MSA_EXT_3 }, |
| 493 | { S390_FEAT_KMAC_HMAC_ESHA_224, S390_FEAT_MSA_EXT_3 }, |
| 494 | { S390_FEAT_KMAC_HMAC_ESHA_256, S390_FEAT_MSA_EXT_3 }, |
| 495 | { S390_FEAT_KMAC_HMAC_ESHA_384, S390_FEAT_MSA_EXT_3 }, |
| 496 | { S390_FEAT_KMAC_HMAC_ESHA_512, S390_FEAT_MSA_EXT_3 }, |
| 497 | { S390_FEAT_KM_FULL_XTS_AES_128, S390_FEAT_MSA_EXT_4 }, |
| 498 | { S390_FEAT_KM_FULL_XTS_AES_256, S390_FEAT_MSA_EXT_4 }, |
| 499 | { S390_FEAT_KM_FULL_XTS_EAES_128, S390_FEAT_MSA_EXT_4 }, |
| 500 | { S390_FEAT_KM_FULL_XTS_EAES_256, S390_FEAT_MSA_EXT_4 }, |
| 501 | { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 }, |
| 502 | { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 }, |
| 503 | { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 }, |
| 504 | { S390_FEAT_AP_QUERY_CONFIG_INFO, S390_FEAT_AP }, |
| 505 | { S390_FEAT_AP_FACILITIES_TEST, S390_FEAT_AP }, |
| 506 | { S390_FEAT_PTFF_QSIE, S390_FEAT_MULTIPLE_EPOCH }, |
| 507 | { S390_FEAT_PTFF_QTOUE, S390_FEAT_MULTIPLE_EPOCH }, |
| 508 | { S390_FEAT_PTFF_STOE, S390_FEAT_MULTIPLE_EPOCH }, |
| 509 | { S390_FEAT_PTFF_STOUE, S390_FEAT_MULTIPLE_EPOCH }, |
| 510 | { S390_FEAT_AP_QUEUE_INTERRUPT_CONTROL, S390_FEAT_AP }, |
| 511 | { S390_FEAT_DIAG_318, S390_FEAT_EXTENDED_LENGTH_SCCB }, |
| 512 | { S390_FEAT_CERT_STORE, S390_FEAT_EXTENDED_LENGTH_SCCB }, |
| 513 | { S390_FEAT_SIPL, S390_FEAT_EXTENDED_LENGTH_SCCB }, |
| 514 | { S390_FEAT_SCLAF, S390_FEAT_EXTENDED_LENGTH_SCCB }, |
| 515 | { S390_FEAT_SCLAF, S390_FEAT_SIPL }, |
| 516 | { S390_FEAT_NNPA, S390_FEAT_VECTOR }, |
| 517 | { S390_FEAT_RDP, S390_FEAT_LOCAL_TLB_CLEARING }, |
| 518 | { S390_FEAT_UV_FEAT_AP, S390_FEAT_AP }, |
| 519 | { S390_FEAT_UV_FEAT_AP_INTR, S390_FEAT_UV_FEAT_AP }, |
| 520 | { S390_FEAT_PFCR_QAF, S390_FEAT_CCF_BASE }, |
| 521 | { S390_FEAT_PFCR_CSDST, S390_FEAT_CCF_BASE }, |
| 522 | { S390_FEAT_PFCR_CSDSTG, S390_FEAT_CCF_BASE }, |
| 523 | { S390_FEAT_PFCR_CSTST, S390_FEAT_CCF_BASE }, |
| 524 | { S390_FEAT_PFCR_CSTSTG, S390_FEAT_CCF_BASE }, |
| 525 | { S390_FEAT_INEFF_NC_TX, S390_FEAT_TRANSACTIONAL_EXE }, |
| 526 | { S390_FEAT_PLO_CLO, S390_FEAT_PLO_EXT }, |
| 527 | { S390_FEAT_PLO_CSO, S390_FEAT_PLO_EXT }, |
| 528 | { S390_FEAT_PLO_DCSO, S390_FEAT_PLO_EXT }, |
| 529 | { S390_FEAT_PLO_CSSTO, S390_FEAT_PLO_EXT }, |
| 530 | { S390_FEAT_PLO_CSDSTO, S390_FEAT_PLO_EXT }, |
| 531 | { S390_FEAT_PLO_CSTSTO, S390_FEAT_PLO_EXT }, |
| 532 | { S390_FEAT_PLO_TCS, S390_FEAT_PLO_EXT }, |
| 533 | { S390_FEAT_PLO_TCSG, S390_FEAT_PLO_EXT }, |
| 534 | { S390_FEAT_PLO_TCSX, S390_FEAT_PLO_EXT }, |
| 535 | { S390_FEAT_PLO_TCSO, S390_FEAT_PLO_EXT }, |
| 536 | { S390_FEAT_PLO_QCS, S390_FEAT_PLO_EXT }, |
| 537 | { S390_FEAT_PLO_QCSG, S390_FEAT_PLO_EXT }, |
| 538 | { S390_FEAT_PLO_QCSX, S390_FEAT_PLO_EXT }, |
| 539 | { S390_FEAT_PLO_QCSO, S390_FEAT_PLO_EXT }, |
| 540 | { S390_FEAT_PLO_LO, S390_FEAT_PLO_EXT }, |
| 541 | { S390_FEAT_PLO_DLX, S390_FEAT_PLO_EXT }, |
| 542 | { S390_FEAT_PLO_DLO, S390_FEAT_PLO_EXT }, |
| 543 | { S390_FEAT_PLO_TL, S390_FEAT_PLO_EXT }, |
| 544 | { S390_FEAT_PLO_TLG, S390_FEAT_PLO_EXT }, |
| 545 | { S390_FEAT_PLO_TLX, S390_FEAT_PLO_EXT }, |
| 546 | { S390_FEAT_PLO_TLO, S390_FEAT_PLO_EXT }, |
| 547 | { S390_FEAT_PLO_QL, S390_FEAT_PLO_EXT }, |
| 548 | { S390_FEAT_PLO_QLG, S390_FEAT_PLO_EXT }, |
| 549 | { S390_FEAT_PLO_QLX, S390_FEAT_PLO_EXT }, |
| 550 | { S390_FEAT_PLO_QLO, S390_FEAT_PLO_EXT }, |
| 551 | { S390_FEAT_PLO_STO, S390_FEAT_PLO_EXT }, |
| 552 | { S390_FEAT_PLO_DST, S390_FEAT_PLO_EXT }, |
| 553 | { S390_FEAT_PLO_DSTG, S390_FEAT_PLO_EXT }, |
| 554 | { S390_FEAT_PLO_DSTX, S390_FEAT_PLO_EXT }, |
| 555 | { S390_FEAT_PLO_DSTO, S390_FEAT_PLO_EXT }, |
| 556 | { S390_FEAT_PLO_TST, S390_FEAT_PLO_EXT }, |
| 557 | { S390_FEAT_PLO_TSTG, S390_FEAT_PLO_EXT }, |
| 558 | { S390_FEAT_PLO_TSTX, S390_FEAT_PLO_EXT }, |
| 559 | { S390_FEAT_PLO_TSTO, S390_FEAT_PLO_EXT }, |
| 560 | { S390_FEAT_PLO_QST, S390_FEAT_PLO_EXT }, |
| 561 | { S390_FEAT_PLO_QSTG, S390_FEAT_PLO_EXT }, |
| 562 | { S390_FEAT_PLO_QSTX, S390_FEAT_PLO_EXT }, |
| 563 | { S390_FEAT_PLO_QSTO, S390_FEAT_PLO_EXT }, |
| 564 | { S390_FEAT_SIE_ASTFLEIE2, S390_FEAT_STFLE }, |
| 565 | }; |
| 566 | int i; |
| 567 | |
| 568 | for (i = 0; i < ARRAY_SIZE(dep); i++) { |
| 569 | if (test_bit(dep[i][0], model->features) && |
| 570 | !test_bit(dep[i][1], model->features)) { |
| 571 | warn_report("\'%s\' requires \'%s\'.", |
| 572 | s390_feat_def(dep[i][0])->name, |
| 573 | s390_feat_def(dep[i][1])->name); |
| 574 | } |
| 575 | } |
| 576 | } |
| 577 | |
| 578 | static void error_prepend_missing_feat(const char *name, void *opaque) |
| 579 | { |
| 580 | error_prepend((Error **) opaque, "%s ", name); |
| 581 | } |
| 582 | |
| 583 | static void check_compat_model_failed(Error **errp, |
| 584 | const S390CPUModel *max_model, |
| 585 | const char *msg) |
| 586 | { |
| 587 | error_setg(errp, "%s. Maximum supported model in the current configuration: \'%s\'", |
| 588 | msg, max_model->def->name); |
| 589 | error_append_hint(errp, "Consider a different accelerator, try \"-accel help\"\n"); |
| 590 | } |
| 591 | |
| 592 | static bool check_compatibility(const S390CPUModel *max_model, |
| 593 | const S390CPUModel *model, Error **errp) |
| 594 | { |
| 595 | ERRP_GUARD(); |
| 596 | S390FeatBitmap missing; |
| 597 | |
| 598 | if (model->def->gen > max_model->def->gen) { |
| 599 | check_compat_model_failed(errp, max_model, "Selected CPU generation is too new"); |
| 600 | return false; |
| 601 | } else if (model->def->gen == max_model->def->gen && |
| 602 | model->def->ec_ga > max_model->def->ec_ga) { |
| 603 | check_compat_model_failed(errp, max_model, "Selected CPU GA level is too new"); |
| 604 | return false; |
| 605 | } |
| 606 | |
| 607 | #ifndef CONFIG_USER_ONLY |
| 608 | if (only_migratable && test_bit(S390_FEAT_UNPACK, model->features)) { |
| 609 | error_setg(errp, "The unpack facility is not compatible with " |
| 610 | "the --only-migratable option. You must remove either " |
| 611 | "the 'unpack' facility or the --only-migratable option"); |
| 612 | return false; |
| 613 | } |
| 614 | #endif |
| 615 | |
| 616 | /* detect the missing features to properly report them */ |
| 617 | bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX); |
| 618 | if (bitmap_empty(missing, S390_FEAT_MAX)) { |
| 619 | return true; |
| 620 | } |
| 621 | |
| 622 | error_setg(errp, " "); |
| 623 | s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat); |
| 624 | error_prepend(errp, "Some features requested in the CPU model are not " |
| 625 | "available in the current configuration: "); |
| 626 | error_append_hint(errp, |
| 627 | "Consider a different accelerator, QEMU, or kernel version\n"); |
| 628 | return false; |
| 629 | } |
| 630 | |
| 631 | S390CPUModel *get_max_cpu_model(Error **errp) |
| 632 | { |
| 633 | static S390CPUModel max_model; |
| 634 | static bool cached; |
| 635 | |
| 636 | if (cached) { |
| 637 | return &max_model; |
| 638 | } |
| 639 | |
| 640 | if (kvm_enabled()) { |
| 641 | if (!kvm_s390_get_host_cpu_model(&max_model, errp)) { |
| 642 | return NULL; |
| 643 | } |
| 644 | } else { |
| 645 | max_model.def = s390_find_cpu_def(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, |
| 646 | QEMU_MAX_CPU_EC_GA, NULL); |
| 647 | bitmap_copy(max_model.features, qemu_max_cpu_feat, S390_FEAT_MAX); |
| 648 | } |
| 649 | cached = true; |
| 650 | return &max_model; |
| 651 | } |
| 652 | |
| 653 | void s390_realize_cpu_model(CPUState *cs, Error **errp) |
| 654 | { |
| 655 | ERRP_GUARD(); |
| 656 | S390CPUClass *xcc = S390_CPU_GET_CLASS(cs); |
| 657 | S390CPU *cpu = S390_CPU(cs); |
| 658 | const S390CPUModel *max_model; |
| 659 | |
| 660 | if (xcc->kvm_required && !kvm_enabled()) { |
| 661 | error_setg(errp, "CPU definition requires KVM"); |
| 662 | return; |
| 663 | } |
| 664 | |
| 665 | if (!cpu->model) { |
| 666 | /* no host model support -> perform compatibility stuff */ |
| 667 | apply_cpu_model(NULL, errp); |
| 668 | return; |
| 669 | } |
| 670 | |
| 671 | max_model = get_max_cpu_model(errp); |
| 672 | if (!max_model) { |
| 673 | error_prepend(errp, "CPU models are not available: "); |
| 674 | return; |
| 675 | } |
| 676 | |
| 677 | /* copy over properties that can vary */ |
| 678 | cpu->model->lowest_ibc = max_model->lowest_ibc; |
| 679 | cpu->model->cpu_id = max_model->cpu_id; |
| 680 | cpu->model->cpu_id_format = max_model->cpu_id_format; |
| 681 | cpu->model->cpu_ver = max_model->cpu_ver; |
| 682 | |
| 683 | check_consistency(cpu->model); |
| 684 | if (!check_compatibility(max_model, cpu->model, errp)) { |
| 685 | return; |
| 686 | } |
| 687 | |
| 688 | apply_cpu_model(cpu->model, errp); |
| 689 | |
| 690 | #if !defined(CONFIG_USER_ONLY) |
| 691 | cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model); |
| 692 | if (tcg_enabled()) { |
| 693 | cpu->env.cpuid = deposit64(cpu->env.cpuid, CPU_PHYS_ADDR_SHIFT, |
| 694 | CPU_PHYS_ADDR_BITS, cpu->env.core_id); |
| 695 | } |
| 696 | #endif |
| 697 | } |
| 698 | |
| 699 | static void get_feature(Object *obj, Visitor *v, const char *name, |
| 700 | void *opaque, Error **errp) |
| 701 | { |
| 702 | S390Feat feat = (S390Feat) (uintptr_t) opaque; |
| 703 | S390CPU *cpu = S390_CPU(obj); |
| 704 | bool value; |
| 705 | |
| 706 | if (!cpu->model) { |
| 707 | error_setg(errp, "Details about the host CPU model are not available, " |
| 708 | "features cannot be queried."); |
| 709 | return; |
| 710 | } |
| 711 | |
| 712 | value = test_bit(feat, cpu->model->features); |
| 713 | visit_type_bool(v, name, &value, errp); |
| 714 | } |
| 715 | |
| 716 | static void set_feature(Object *obj, Visitor *v, const char *name, |
| 717 | void *opaque, Error **errp) |
| 718 | { |
| 719 | S390Feat feat = (S390Feat) (uintptr_t) opaque; |
| 720 | DeviceState *dev = DEVICE(obj); |
| 721 | S390CPU *cpu = S390_CPU(obj); |
| 722 | bool value; |
| 723 | |
| 724 | if (qdev_is_realized(dev)) { |
| 725 | error_setg(errp, "Attempt to set property '%s' on '%s' after " |
| 726 | "it was realized", name, object_get_typename(obj)); |
| 727 | return; |
| 728 | } else if (!cpu->model) { |
| 729 | error_setg(errp, "Details about the host CPU model are not available, " |
| 730 | "features cannot be changed."); |
| 731 | return; |
| 732 | } |
| 733 | |
| 734 | if (!visit_type_bool(v, name, &value, errp)) { |
| 735 | return; |
| 736 | } |
| 737 | if (value) { |
| 738 | if (!test_bit(feat, cpu->model->def->full_feat)) { |
| 739 | error_setg(errp, "Feature '%s' is not available for CPU model '%s'," |
| 740 | " it was introduced with later models.", |
| 741 | name, cpu->model->def->name); |
| 742 | return; |
| 743 | } |
| 744 | set_bit(feat, cpu->model->features); |
| 745 | } else { |
| 746 | clear_bit(feat, cpu->model->features); |
| 747 | } |
| 748 | } |
| 749 | |
| 750 | static void get_feature_group(Object *obj, Visitor *v, const char *name, |
| 751 | void *opaque, Error **errp) |
| 752 | { |
| 753 | S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque; |
| 754 | const S390FeatGroupDef *def = s390_feat_group_def(group); |
| 755 | S390CPU *cpu = S390_CPU(obj); |
| 756 | S390FeatBitmap tmp; |
| 757 | bool value; |
| 758 | |
| 759 | if (!cpu->model) { |
| 760 | error_setg(errp, "Details about the host CPU model are not available, " |
| 761 | "features cannot be queried."); |
| 762 | return; |
| 763 | } |
| 764 | |
| 765 | /* a group is enabled if all features are enabled */ |
| 766 | bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX); |
| 767 | value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX); |
| 768 | visit_type_bool(v, name, &value, errp); |
| 769 | } |
| 770 | |
| 771 | static void set_feature_group(Object *obj, Visitor *v, const char *name, |
| 772 | void *opaque, Error **errp) |
| 773 | { |
| 774 | S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque; |
| 775 | const S390FeatGroupDef *def = s390_feat_group_def(group); |
| 776 | DeviceState *dev = DEVICE(obj); |
| 777 | S390CPU *cpu = S390_CPU(obj); |
| 778 | bool value; |
| 779 | |
| 780 | if (qdev_is_realized(dev)) { |
| 781 | error_setg(errp, "Attempt to set property '%s' on '%s' after " |
| 782 | "it was realized", name, object_get_typename(obj)); |
| 783 | return; |
| 784 | } else if (!cpu->model) { |
| 785 | error_setg(errp, "Details about the host CPU model are not available, " |
| 786 | "features cannot be changed."); |
| 787 | return; |
| 788 | } |
| 789 | |
| 790 | if (!visit_type_bool(v, name, &value, errp)) { |
| 791 | return; |
| 792 | } |
| 793 | if (value) { |
| 794 | /* groups are added in one shot, so an intersect is sufficient */ |
| 795 | if (!bitmap_intersects(def->feat, cpu->model->def->full_feat, |
| 796 | S390_FEAT_MAX)) { |
| 797 | error_setg(errp, "Group '%s' is not available for CPU model '%s'," |
| 798 | " it was introduced with later models.", |
| 799 | name, cpu->model->def->name); |
| 800 | return; |
| 801 | } |
| 802 | bitmap_or(cpu->model->features, cpu->model->features, def->feat, |
| 803 | S390_FEAT_MAX); |
| 804 | } else { |
| 805 | bitmap_andnot(cpu->model->features, cpu->model->features, def->feat, |
| 806 | S390_FEAT_MAX); |
| 807 | } |
| 808 | } |
| 809 | |
| 810 | static void s390_cpu_model_initfn(Object *obj) |
| 811 | { |
| 812 | S390CPU *cpu = S390_CPU(obj); |
| 813 | S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu); |
| 814 | |
| 815 | cpu->model = g_malloc0(sizeof(*cpu->model)); |
| 816 | /* copy the model, so we can modify it */ |
| 817 | cpu->model->def = xcc->cpu_def; |
| 818 | if (xcc->is_static) { |
| 819 | /* base model - features will never change */ |
| 820 | bitmap_copy(cpu->model->features, cpu->model->def->base_feat, |
| 821 | S390_FEAT_MAX); |
| 822 | } else { |
| 823 | /* latest model - features can change */ |
| 824 | bitmap_copy(cpu->model->features, |
| 825 | cpu->model->def->default_feat, S390_FEAT_MAX); |
| 826 | } |
| 827 | } |
| 828 | |
| 829 | static S390CPUModel s390_qemu_cpu_model; |
| 830 | |
| 831 | /* Set the qemu CPU model (on machine initialization). Must not be called |
| 832 | * once CPUs have been created. |
| 833 | */ |
| 834 | void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga, |
| 835 | const S390FeatInit feat_init) |
| 836 | { |
| 837 | const S390CPUDef *def = s390_find_cpu_def(type, gen, ec_ga, NULL); |
| 838 | |
| 839 | g_assert(def); |
| 840 | g_assert(QTAILQ_EMPTY_RCU(&cpus_queue)); |
| 841 | |
| 842 | /* build the CPU model */ |
| 843 | s390_qemu_cpu_model.def = def; |
| 844 | bitmap_zero(s390_qemu_cpu_model.features, S390_FEAT_MAX); |
| 845 | s390_init_feat_bitmap(feat_init, s390_qemu_cpu_model.features); |
| 846 | } |
| 847 | |
| 848 | static void s390_qemu_cpu_model_initfn(Object *obj) |
| 849 | { |
| 850 | S390CPU *cpu = S390_CPU(obj); |
| 851 | |
| 852 | cpu->model = g_malloc0(sizeof(*cpu->model)); |
| 853 | /* copy the CPU model so we can modify it */ |
| 854 | memcpy(cpu->model, &s390_qemu_cpu_model, sizeof(*cpu->model)); |
| 855 | } |
| 856 | |
| 857 | static void s390_max_cpu_model_initfn(Object *obj) |
| 858 | { |
| 859 | const S390CPUModel *max_model; |
| 860 | S390CPU *cpu = S390_CPU(obj); |
| 861 | Error *local_err = NULL; |
| 862 | |
| 863 | if (kvm_enabled() && !kvm_s390_cpu_models_supported()) { |
| 864 | /* "max" and "host" always work, even without CPU model support */ |
| 865 | return; |
| 866 | } |
| 867 | |
| 868 | max_model = get_max_cpu_model(&local_err); |
| 869 | if (local_err) { |
| 870 | /* we expect errors only under KVM, when actually querying the kernel */ |
| 871 | g_assert(kvm_enabled()); |
| 872 | error_report_err(local_err); |
| 873 | /* fallback to unsupported CPU models */ |
| 874 | return; |
| 875 | } |
| 876 | |
| 877 | cpu->model = g_new(S390CPUModel, 1); |
| 878 | /* copy the CPU model so we can modify it */ |
| 879 | memcpy(cpu->model, max_model, sizeof(*cpu->model)); |
| 880 | } |
| 881 | |
| 882 | static void s390_cpu_model_finalize(Object *obj) |
| 883 | { |
| 884 | S390CPU *cpu = S390_CPU(obj); |
| 885 | |
| 886 | g_free(cpu->model); |
| 887 | cpu->model = NULL; |
| 888 | } |
| 889 | |
| 890 | static bool get_is_migration_safe(Object *obj, Error **errp) |
| 891 | { |
| 892 | return S390_CPU_GET_CLASS(obj)->is_migration_safe; |
| 893 | } |
| 894 | |
| 895 | static bool get_is_static(Object *obj, Error **errp) |
| 896 | { |
| 897 | return S390_CPU_GET_CLASS(obj)->is_static; |
| 898 | } |
| 899 | |
| 900 | static char *get_description(Object *obj, Error **errp) |
| 901 | { |
| 902 | return g_strdup(S390_CPU_GET_CLASS(obj)->desc); |
| 903 | } |
| 904 | |
| 905 | void s390_cpu_model_class_register_props(ObjectClass *oc) |
| 906 | { |
| 907 | S390FeatGroup group; |
| 908 | S390Feat feat; |
| 909 | |
| 910 | object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe, |
| 911 | NULL); |
| 912 | object_class_property_add_bool(oc, "static", get_is_static, |
| 913 | NULL); |
| 914 | object_class_property_add_str(oc, "description", get_description, NULL); |
| 915 | |
| 916 | for (feat = 0; feat < S390_FEAT_MAX; feat++) { |
| 917 | const S390FeatDef *def = s390_feat_def(feat); |
| 918 | object_class_property_add(oc, def->name, "bool", get_feature, |
| 919 | set_feature, NULL, (void *) feat); |
| 920 | object_class_property_set_description(oc, def->name, def->desc); |
| 921 | } |
| 922 | for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { |
| 923 | const S390FeatGroupDef *def = s390_feat_group_def(group); |
| 924 | object_class_property_add(oc, def->name, "bool", get_feature_group, |
| 925 | set_feature_group, NULL, (void *) group); |
| 926 | object_class_property_set_description(oc, def->name, def->desc); |
| 927 | } |
| 928 | } |
| 929 | |
| 930 | #ifdef CONFIG_KVM |
| 931 | static void s390_host_cpu_model_class_init(ObjectClass *oc, const void *data) |
| 932 | { |
| 933 | S390CPUClass *xcc = S390_CPU_CLASS(oc); |
| 934 | |
| 935 | xcc->kvm_required = true; |
| 936 | xcc->desc = "KVM only: All recognized features"; |
| 937 | } |
| 938 | #endif |
| 939 | |
| 940 | static void s390_base_cpu_model_class_init(ObjectClass *oc, const void *data) |
| 941 | { |
| 942 | S390CPUClass *xcc = S390_CPU_CLASS(oc); |
| 943 | |
| 944 | /* all base models are migration safe */ |
| 945 | xcc->cpu_def = (const S390CPUDef *) data; |
| 946 | xcc->is_migration_safe = true; |
| 947 | xcc->is_static = true; |
| 948 | xcc->desc = xcc->cpu_def->desc; |
| 949 | } |
| 950 | |
| 951 | static void s390_cpu_model_class_init(ObjectClass *oc, const void *data) |
| 952 | { |
| 953 | S390CPUClass *xcc = S390_CPU_CLASS(oc); |
| 954 | |
| 955 | /* model that can change between QEMU versions */ |
| 956 | xcc->cpu_def = (const S390CPUDef *) data; |
| 957 | xcc->is_migration_safe = true; |
| 958 | xcc->desc = xcc->cpu_def->desc; |
| 959 | } |
| 960 | |
| 961 | static void s390_qemu_cpu_model_class_init(ObjectClass *oc, const void *data) |
| 962 | { |
| 963 | S390CPUClass *xcc = S390_CPU_CLASS(oc); |
| 964 | |
| 965 | xcc->is_migration_safe = true; |
| 966 | xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s", |
| 967 | QEMU_HW_VERSION); |
| 968 | } |
| 969 | |
| 970 | static void s390_max_cpu_model_class_init(ObjectClass *oc, const void *data) |
| 971 | { |
| 972 | S390CPUClass *xcc = S390_CPU_CLASS(oc); |
| 973 | |
| 974 | /* |
| 975 | * The "max" model is neither static nor migration safe. Under KVM |
| 976 | * it represents the "host" model. Under TCG it represents the "qemu" CPU |
| 977 | * model of the latest QEMU machine. |
| 978 | */ |
| 979 | xcc->desc = |
| 980 | "Enables all features supported by the accelerator in the current host"; |
| 981 | } |
| 982 | |
| 983 | /* Generate type name for a cpu model. Caller has to free the string. */ |
| 984 | static char *s390_cpu_type_name(const char *model_name) |
| 985 | { |
| 986 | return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name); |
| 987 | } |
| 988 | |
| 989 | /* Generate type name for a base cpu model. Caller has to free the string. */ |
| 990 | static char *s390_base_cpu_type_name(const char *model_name) |
| 991 | { |
| 992 | return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name); |
| 993 | } |
| 994 | |
| 995 | ObjectClass *s390_cpu_class_by_name(const char *name) |
| 996 | { |
| 997 | char *typename = s390_cpu_type_name(name); |
| 998 | ObjectClass *oc; |
| 999 | |
| 1000 | oc = object_class_by_name(typename); |
| 1001 | g_free(typename); |
| 1002 | return oc; |
| 1003 | } |
| 1004 | |
| 1005 | static const TypeInfo qemu_s390_cpu_type_info = { |
| 1006 | .name = S390_CPU_TYPE_NAME("qemu"), |
| 1007 | .parent = TYPE_S390_CPU, |
| 1008 | .instance_init = s390_qemu_cpu_model_initfn, |
| 1009 | .instance_finalize = s390_cpu_model_finalize, |
| 1010 | .class_init = s390_qemu_cpu_model_class_init, |
| 1011 | }; |
| 1012 | |
| 1013 | static const TypeInfo max_s390_cpu_type_info = { |
| 1014 | .name = S390_CPU_TYPE_NAME("max"), |
| 1015 | .parent = TYPE_S390_CPU, |
| 1016 | .instance_init = s390_max_cpu_model_initfn, |
| 1017 | .instance_finalize = s390_cpu_model_finalize, |
| 1018 | .class_init = s390_max_cpu_model_class_init, |
| 1019 | }; |
| 1020 | |
| 1021 | #ifdef CONFIG_KVM |
| 1022 | static const TypeInfo host_s390_cpu_type_info = { |
| 1023 | .name = S390_CPU_TYPE_NAME("host"), |
| 1024 | .parent = S390_CPU_TYPE_NAME("max"), |
| 1025 | .class_init = s390_host_cpu_model_class_init, |
| 1026 | }; |
| 1027 | #endif |
| 1028 | |
| 1029 | static void init_ignored_base_feat(void) |
| 1030 | { |
| 1031 | static const int feats[] = { |
| 1032 | /* MSA subfunctions that could not be available on certain machines */ |
| 1033 | S390_FEAT_KMAC_DEA, |
| 1034 | S390_FEAT_KMAC_TDEA_128, |
| 1035 | S390_FEAT_KMAC_TDEA_192, |
| 1036 | S390_FEAT_KMC_DEA, |
| 1037 | S390_FEAT_KMC_TDEA_128, |
| 1038 | S390_FEAT_KMC_TDEA_192, |
| 1039 | S390_FEAT_KM_DEA, |
| 1040 | S390_FEAT_KM_TDEA_128, |
| 1041 | S390_FEAT_KM_TDEA_192, |
| 1042 | S390_FEAT_KIMD_SHA_1, |
| 1043 | S390_FEAT_KLMD_SHA_1, |
| 1044 | /* CSSKE is deprecated on newer generations */ |
| 1045 | S390_FEAT_CONDITIONAL_SSKE, |
| 1046 | }; |
| 1047 | int i; |
| 1048 | |
| 1049 | for (i = 0; i < ARRAY_SIZE(feats); i++) { |
| 1050 | set_bit(feats[i], ignored_base_feat); |
| 1051 | } |
| 1052 | } |
| 1053 | |
| 1054 | static void register_types(void) |
| 1055 | { |
| 1056 | static const S390FeatInit qemu_max_init = { S390_FEAT_LIST_QEMU_MAX }; |
| 1057 | int i; |
| 1058 | |
| 1059 | init_ignored_base_feat(); |
| 1060 | |
| 1061 | /* init all bitmaps from generated data initially */ |
| 1062 | s390_init_feat_bitmap(qemu_max_init, qemu_max_cpu_feat); |
| 1063 | for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { |
| 1064 | s390_init_feat_bitmap(s390_cpu_defs[i].base_init, |
| 1065 | s390_cpu_defs[i].base_feat); |
| 1066 | s390_init_feat_bitmap(s390_cpu_defs[i].default_init, |
| 1067 | s390_cpu_defs[i].default_feat); |
| 1068 | s390_init_feat_bitmap(s390_cpu_defs[i].full_init, |
| 1069 | s390_cpu_defs[i].full_feat); |
| 1070 | } |
| 1071 | |
| 1072 | /* initialize the qemu model with the maximum definition ("max" model) */ |
| 1073 | s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, |
| 1074 | QEMU_MAX_CPU_EC_GA, qemu_max_init); |
| 1075 | |
| 1076 | for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { |
| 1077 | char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name); |
| 1078 | TypeInfo ti_base = { |
| 1079 | .name = base_name, |
| 1080 | .parent = TYPE_S390_CPU, |
| 1081 | .instance_init = s390_cpu_model_initfn, |
| 1082 | .instance_finalize = s390_cpu_model_finalize, |
| 1083 | .class_init = s390_base_cpu_model_class_init, |
| 1084 | .class_data = &s390_cpu_defs[i], |
| 1085 | }; |
| 1086 | char *name = s390_cpu_type_name(s390_cpu_defs[i].name); |
| 1087 | TypeInfo ti = { |
| 1088 | .name = name, |
| 1089 | .parent = TYPE_S390_CPU, |
| 1090 | .instance_init = s390_cpu_model_initfn, |
| 1091 | .instance_finalize = s390_cpu_model_finalize, |
| 1092 | .class_init = s390_cpu_model_class_init, |
| 1093 | .class_data = &s390_cpu_defs[i], |
| 1094 | }; |
| 1095 | |
| 1096 | type_register_static(&ti_base); |
| 1097 | type_register_static(&ti); |
| 1098 | g_free(base_name); |
| 1099 | g_free(name); |
| 1100 | } |
| 1101 | |
| 1102 | type_register_static(&qemu_s390_cpu_type_info); |
| 1103 | type_register_static(&max_s390_cpu_type_info); |
| 1104 | #ifdef CONFIG_KVM |
| 1105 | type_register_static(&host_s390_cpu_type_info); |
| 1106 | #endif |
| 1107 | } |
| 1108 | |
| 1109 | type_init(register_types) |