4 * Copyright 2016 IBM Corp.
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
13 #include "qemu/osdep.h"
16 #include "kvm_s390x.h"
17 #include "sysemu/kvm.h"
18 #include "gen-features.h"
19 #include "qapi/error.h"
20 #include "qapi/visitor.h"
21 #include "qemu/error-report.h"
22 #include "qapi/qmp/qerror.h"
23 #include "qapi/qobject-input-visitor.h"
24 #include "qapi/qmp/qbool.h"
25 #ifndef CONFIG_USER_ONLY
26 #include "sysemu/arch_init.h"
29 #define CPUDEF_INIT(_type, _gen, _ec_ga, _mha_pow, _hmfai, _name, _desc) \
35 .mha_pow = _mha_pow, \
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 }, \
44 * CPU definiton list in order of release. For now, base features of a
45 * following release are always a subset of base features of the previous
46 * release. Same is correct for the other feature sets.
47 * A BC release always follows the corresponding EC release.
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"),
84 /* features part of a base model but not relevant for finding a base model */
85 S390FeatBitmap ignored_base_feat;
87 void s390_cpudef_featoff(uint8_t gen, uint8_t ec_ga, S390Feat feat)
89 const S390CPUDef *def;
91 def = s390_find_cpu_def(0, gen, ec_ga, NULL);
92 clear_bit(feat, (unsigned long *)&def->default_feat);
95 void s390_cpudef_featoff_greater(uint8_t gen, uint8_t ec_ga, S390Feat feat)
99 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
100 const S390CPUDef *def = &s390_cpu_defs[i];
102 if (def->gen < gen) {
105 if (def->gen == gen && def->ec_ga < ec_ga) {
109 clear_bit(feat, (unsigned long *)&def->default_feat);
113 uint32_t s390_get_hmfai(void)
118 cpu = S390_CPU(qemu_get_cpu(0));
121 if (!cpu || !cpu->model) {
124 return cpu->model->def->hmfai;
127 uint8_t s390_get_mha_pow(void)
132 cpu = S390_CPU(qemu_get_cpu(0));
135 if (!cpu || !cpu->model) {
138 return cpu->model->def->mha_pow;
141 uint32_t s390_get_ibc_val(void)
143 uint16_t unblocked_ibc, lowest_ibc;
147 cpu = S390_CPU(qemu_get_cpu(0));
150 if (!cpu || !cpu->model) {
153 unblocked_ibc = s390_ibc_from_cpu_model(cpu->model);
154 lowest_ibc = cpu->model->lowest_ibc;
155 /* the lowest_ibc always has to be <= unblocked_ibc */
156 if (!lowest_ibc || lowest_ibc > unblocked_ibc) {
159 return ((uint32_t) lowest_ibc << 16) | unblocked_ibc;
162 void s390_get_feat_block(S390FeatType type, uint8_t *data)
167 cpu = S390_CPU(qemu_get_cpu(0));
170 if (!cpu || !cpu->model) {
173 s390_fill_feat_block(cpu->model->features, type, data);
176 bool s390_has_feat(S390Feat feat)
181 cpu = S390_CPU(qemu_get_cpu(0));
184 if (!cpu || !cpu->model) {
187 if (feat == S390_FEAT_VECTOR) {
188 return kvm_check_extension(kvm_state,
189 KVM_CAP_S390_VECTOR_REGISTERS);
191 if (feat == S390_FEAT_RUNTIME_INSTRUMENTATION) {
192 return kvm_s390_get_ri();
194 if (feat == S390_FEAT_MSA_EXT_3) {
199 if (feat == S390_FEAT_ZPCI) {
204 return test_bit(feat, cpu->model->features);
207 uint8_t s390_get_gen_for_cpu_type(uint16_t type)
211 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
212 if (s390_cpu_defs[i].type == type) {
213 return s390_cpu_defs[i].gen;
219 const S390CPUDef *s390_find_cpu_def(uint16_t type, uint8_t gen, uint8_t ec_ga,
220 S390FeatBitmap features)
222 const S390CPUDef *last_compatible = NULL;
223 const S390CPUDef *matching_cpu_type = NULL;
230 gen = s390_get_gen_for_cpu_type(type);
233 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
234 const S390CPUDef *def = &s390_cpu_defs[i];
235 S390FeatBitmap missing;
237 /* don't even try newer generations if we know the generation */
239 if (def->gen > gen) {
241 } else if (def->gen == gen && ec_ga && def->ec_ga > ec_ga) {
247 /* see if the model satisfies the minimum features */
248 bitmap_andnot(missing, def->base_feat, features, S390_FEAT_MAX);
250 * Ignore certain features that are in the base model, but not
251 * relevant for the search (esp. MSA subfunctions).
253 bitmap_andnot(missing, missing, ignored_base_feat, S390_FEAT_MAX);
254 if (!bitmap_empty(missing, S390_FEAT_MAX)) {
259 /* stop the search if we found the exact model */
260 if (def->type == type && def->ec_ga == ec_ga) {
263 /* remember if we've at least seen one with the same cpu type */
264 if (def->type == type) {
265 matching_cpu_type = def;
267 last_compatible = def;
269 /* prefer the model with the same cpu type, esp. don't take the BC for EC */
270 if (matching_cpu_type) {
271 return matching_cpu_type;
273 return last_compatible;
276 static void s390_print_cpu_model_list_entry(gpointer data, gpointer user_data)
278 CPUListState *s = user_data;
279 const S390CPUClass *scc = S390_CPU_CLASS((ObjectClass *)data);
280 char *name = g_strdup(object_class_get_name((ObjectClass *)data));
281 const char *details = "";
283 if (scc->is_static) {
284 details = "(static, migration-safe)";
285 } else if (scc->is_migration_safe) {
286 details = "(migration-safe)";
289 /* strip off the -s390x-cpu */
290 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0;
291 (*s->cpu_fprintf)(s->file, "s390 %-15s %-35s %s\n", name, scc->desc,
296 static gint s390_cpu_list_compare(gconstpointer a, gconstpointer b)
298 const S390CPUClass *cc_a = S390_CPU_CLASS((ObjectClass *)a);
299 const S390CPUClass *cc_b = S390_CPU_CLASS((ObjectClass *)b);
300 const char *name_a = object_class_get_name((ObjectClass *)a);
301 const char *name_b = object_class_get_name((ObjectClass *)b);
303 /* move qemu and host to the top of the list, qemu first, host second */
304 if (name_a[0] == 'q') {
306 } else if (name_b[0] == 'q') {
308 } else if (name_a[0] == 'h') {
310 } else if (name_b[0] == 'h') {
314 /* keep the same order we have in our table (sorted by release date) */
315 if (cc_a->cpu_def != cc_b->cpu_def) {
316 return cc_a->cpu_def - cc_b->cpu_def;
319 /* exact same definition - list base model first */
320 return cc_a->is_static ? -1 : 1;
323 void s390_cpu_list(FILE *f, fprintf_function print)
327 .cpu_fprintf = print,
333 list = object_class_get_list(TYPE_S390_CPU, false);
334 list = g_slist_sort(list, s390_cpu_list_compare);
335 g_slist_foreach(list, s390_print_cpu_model_list_entry, &s);
338 (*print)(f, "\nRecognized feature flags:\n");
339 for (feat = 0; feat < S390_FEAT_MAX; feat++) {
340 const S390FeatDef *def = s390_feat_def(feat);
342 (*print)(f, "%-20s %-50s\n", def->name, def->desc);
345 (*print)(f, "\nRecognized feature groups:\n");
346 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) {
347 const S390FeatGroupDef *def = s390_feat_group_def(group);
349 (*print)(f, "%-20s %-50s\n", def->name, def->desc);
353 static S390CPUModel *get_max_cpu_model(Error **errp);
355 #ifndef CONFIG_USER_ONLY
356 static void list_add_feat(const char *name, void *opaque);
358 static void check_unavailable_features(const S390CPUModel *max_model,
359 const S390CPUModel *model,
360 strList **unavailable)
362 S390FeatBitmap missing;
364 /* check general model compatibility */
365 if (max_model->def->gen < model->def->gen ||
366 (max_model->def->gen == model->def->gen &&
367 max_model->def->ec_ga < model->def->ec_ga)) {
368 list_add_feat("type", unavailable);
371 /* detect missing features if any to properly report them */
372 bitmap_andnot(missing, model->features, max_model->features,
374 if (!bitmap_empty(missing, S390_FEAT_MAX)) {
375 s390_feat_bitmap_to_ascii(missing, unavailable, list_add_feat);
379 struct CpuDefinitionInfoListData {
380 CpuDefinitionInfoList *list;
384 static void create_cpu_model_list(ObjectClass *klass, void *opaque)
386 struct CpuDefinitionInfoListData *cpu_list_data = opaque;
387 CpuDefinitionInfoList **cpu_list = &cpu_list_data->list;
388 CpuDefinitionInfoList *entry;
389 CpuDefinitionInfo *info;
390 char *name = g_strdup(object_class_get_name(klass));
391 S390CPUClass *scc = S390_CPU_CLASS(klass);
393 /* strip off the -s390x-cpu */
394 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0;
395 info = g_new0(CpuDefinitionInfo, 1);
397 info->has_migration_safe = true;
398 info->migration_safe = scc->is_migration_safe;
399 info->q_static = scc->is_static;
400 info->q_typename = g_strdup(object_class_get_name(klass));
401 /* check for unavailable features */
402 if (cpu_list_data->model) {
405 obj = object_new(object_class_get_name(klass));
408 info->has_unavailable_features = true;
409 check_unavailable_features(cpu_list_data->model, sc->model,
410 &info->unavailable_features);
415 entry = g_new0(CpuDefinitionInfoList, 1);
417 entry->next = *cpu_list;
421 CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp)
423 struct CpuDefinitionInfoListData list_data = {
427 list_data.model = get_max_cpu_model(errp);
433 object_class_foreach(create_cpu_model_list, TYPE_S390_CPU, false,
436 return list_data.list;
439 static void cpu_model_from_info(S390CPUModel *model, const CpuModelInfo *info,
442 const QDict *qdict = NULL;
450 qdict = qobject_to_qdict(info->props);
452 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict");
457 oc = cpu_class_by_name(TYPE_S390_CPU, info->name);
459 error_setg(errp, "The CPU definition \'%s\' is unknown.", info->name);
462 if (S390_CPU_CLASS(oc)->kvm_required && !kvm_enabled()) {
463 error_setg(errp, "The CPU definition '%s' requires KVM", info->name);
466 obj = object_new(object_class_get_name(oc));
470 error_setg(errp, "Details about the host CPU model are not available, "
471 "it cannot be used.");
477 visitor = qobject_input_visitor_new(info->props);
478 visit_start_struct(visitor, NULL, NULL, 0, errp);
483 for (e = qdict_first(qdict); e; e = qdict_next(qdict, e)) {
484 object_property_set(obj, visitor, e->key, errp);
490 visit_check_struct(visitor, errp);
492 visit_end_struct(visitor, NULL);
500 /* copy the model and throw the cpu away */
501 memcpy(model, cpu->model, sizeof(*model));
505 static void qdict_add_disabled_feat(const char *name, void *opaque)
507 qdict_put_bool(opaque, name, false);
510 static void qdict_add_enabled_feat(const char *name, void *opaque)
512 qdict_put_bool(opaque, name, true);
515 /* convert S390CPUDef into a static CpuModelInfo */
516 static void cpu_info_from_model(CpuModelInfo *info, const S390CPUModel *model,
519 QDict *qdict = qdict_new();
520 S390FeatBitmap bitmap;
522 /* always fallback to the static base model */
523 info->name = g_strdup_printf("%s-base", model->def->name);
526 /* features deleted from the base feature set */
527 bitmap_andnot(bitmap, model->def->base_feat, model->features,
529 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) {
530 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat);
533 /* features added to the base feature set */
534 bitmap_andnot(bitmap, model->features, model->def->base_feat,
536 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) {
537 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_enabled_feat);
540 /* expand all features */
541 s390_feat_bitmap_to_ascii(model->features, qdict,
542 qdict_add_enabled_feat);
543 bitmap_complement(bitmap, model->features, S390_FEAT_MAX);
544 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat);
547 if (!qdict_size(qdict)) {
550 info->props = QOBJECT(qdict);
551 info->has_props = true;
555 CpuModelExpansionInfo *arch_query_cpu_model_expansion(CpuModelExpansionType type,
559 CpuModelExpansionInfo *expansion_info = NULL;
560 S390CPUModel s390_model;
561 bool delta_changes = false;
563 /* convert it to our internal representation */
564 cpu_model_from_info(&s390_model, model, errp);
569 if (type == CPU_MODEL_EXPANSION_TYPE_STATIC) {
570 delta_changes = true;
571 } else if (type != CPU_MODEL_EXPANSION_TYPE_FULL) {
572 error_setg(errp, "The requested expansion type is not supported.");
576 /* convert it back to a static representation */
577 expansion_info = g_new0(CpuModelExpansionInfo, 1);
578 expansion_info->model = g_malloc0(sizeof(*expansion_info->model));
579 cpu_info_from_model(expansion_info->model, &s390_model, delta_changes);
580 return expansion_info;
583 static void list_add_feat(const char *name, void *opaque)
585 strList **last = (strList **) opaque;
588 entry = g_new0(strList, 1);
589 entry->value = g_strdup(name);
594 CpuModelCompareInfo *arch_query_cpu_model_comparison(CpuModelInfo *infoa,
598 CpuModelCompareResult feat_result, gen_result;
599 CpuModelCompareInfo *compare_info;
600 S390FeatBitmap missing, added;
601 S390CPUModel modela, modelb;
603 /* convert both models to our internal representation */
604 cpu_model_from_info(&modela, infoa, errp);
608 cpu_model_from_info(&modelb, infob, errp);
612 compare_info = g_new0(CpuModelCompareInfo, 1);
614 /* check the cpu generation and ga level */
615 if (modela.def->gen == modelb.def->gen) {
616 if (modela.def->ec_ga == modelb.def->ec_ga) {
617 /* ec and corresponding bc are identical */
618 gen_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL;
619 } else if (modela.def->ec_ga < modelb.def->ec_ga) {
620 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET;
622 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET;
624 } else if (modela.def->gen < modelb.def->gen) {
625 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET;
627 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET;
629 if (gen_result != CPU_MODEL_COMPARE_RESULT_IDENTICAL) {
630 /* both models cannot be made identical */
631 list_add_feat("type", &compare_info->responsible_properties);
634 /* check the feature set */
635 if (bitmap_equal(modela.features, modelb.features, S390_FEAT_MAX)) {
636 feat_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL;
638 bitmap_andnot(missing, modela.features, modelb.features, S390_FEAT_MAX);
639 s390_feat_bitmap_to_ascii(missing,
640 &compare_info->responsible_properties,
642 bitmap_andnot(added, modelb.features, modela.features, S390_FEAT_MAX);
643 s390_feat_bitmap_to_ascii(added, &compare_info->responsible_properties,
645 if (bitmap_empty(missing, S390_FEAT_MAX)) {
646 feat_result = CPU_MODEL_COMPARE_RESULT_SUBSET;
647 } else if (bitmap_empty(added, S390_FEAT_MAX)) {
648 feat_result = CPU_MODEL_COMPARE_RESULT_SUPERSET;
650 feat_result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE;
654 /* combine the results */
655 if (gen_result == feat_result) {
656 compare_info->result = gen_result;
657 } else if (feat_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) {
658 compare_info->result = gen_result;
659 } else if (gen_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) {
660 compare_info->result = feat_result;
662 compare_info->result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE;
667 CpuModelBaselineInfo *arch_query_cpu_model_baseline(CpuModelInfo *infoa,
671 CpuModelBaselineInfo *baseline_info;
672 S390CPUModel modela, modelb, model;
677 /* convert both models to our internal representation */
678 cpu_model_from_info(&modela, infoa, errp);
683 cpu_model_from_info(&modelb, infob, errp);
688 /* features both models support */
689 bitmap_and(model.features, modela.features, modelb.features, S390_FEAT_MAX);
691 /* detect the maximum model not regarding features */
692 if (modela.def->gen == modelb.def->gen) {
693 if (modela.def->type == modelb.def->type) {
694 cpu_type = modela.def->type;
698 max_gen = modela.def->gen;
699 max_gen_ga = MIN(modela.def->ec_ga, modelb.def->ec_ga);
700 } else if (modela.def->gen > modelb.def->gen) {
701 cpu_type = modelb.def->type;
702 max_gen = modelb.def->gen;
703 max_gen_ga = modelb.def->ec_ga;
705 cpu_type = modela.def->type;
706 max_gen = modela.def->gen;
707 max_gen_ga = modela.def->ec_ga;
710 model.def = s390_find_cpu_def(cpu_type, max_gen, max_gen_ga,
712 /* strip off features not part of the max model */
713 bitmap_and(model.features, model.features, model.def->full_feat,
716 baseline_info = g_new0(CpuModelBaselineInfo, 1);
717 baseline_info->model = g_malloc0(sizeof(*baseline_info->model));
718 cpu_info_from_model(baseline_info->model, &model, true);
719 return baseline_info;
723 static void check_consistency(const S390CPUModel *model)
725 static int dep[][2] = {
726 { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH },
727 { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH },
728 { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH },
729 { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT },
730 { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH},
731 { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT },
732 { S390_FEAT_DFP_FAST, S390_FEAT_DFP },
733 { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 },
734 { S390_FEAT_EDAT_2, S390_FEAT_EDAT},
735 { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 },
736 { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 },
737 { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 },
738 { S390_FEAT_SIE_CMMA, S390_FEAT_CMM },
739 { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS },
740 { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT },
741 { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 },
742 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING },
743 { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR },
744 { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR },
745 { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 },
746 { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP },
747 { S390_FEAT_CMM_NT, S390_FEAT_CMM },
748 { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 },
749 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST },
750 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING },
751 { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 },
752 { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA },
753 { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA },
754 { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA },
755 { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA },
756 { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA },
757 { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA },
758 { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA },
759 { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA },
760 { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA },
761 { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA },
762 { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA },
763 { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA },
764 { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 },
765 { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 },
766 { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 },
770 for (i = 0; i < ARRAY_SIZE(dep); i++) {
771 if (test_bit(dep[i][0], model->features) &&
772 !test_bit(dep[i][1], model->features)) {
773 warn_report("\'%s\' requires \'%s\'.",
774 s390_feat_def(dep[i][0])->name,
775 s390_feat_def(dep[i][1])->name);
780 static void error_prepend_missing_feat(const char *name, void *opaque)
782 error_prepend((Error **) opaque, "%s ", name);
785 static void check_compatibility(const S390CPUModel *max_model,
786 const S390CPUModel *model, Error **errp)
788 S390FeatBitmap missing;
790 if (model->def->gen > max_model->def->gen) {
791 error_setg(errp, "Selected CPU generation is too new. Maximum "
792 "supported model in the configuration: \'%s\'",
793 max_model->def->name);
795 } else if (model->def->gen == max_model->def->gen &&
796 model->def->ec_ga > max_model->def->ec_ga) {
797 error_setg(errp, "Selected CPU GA level is too new. Maximum "
798 "supported model in the configuration: \'%s\'",
799 max_model->def->name);
803 /* detect the missing features to properly report them */
804 bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX);
805 if (bitmap_empty(missing, S390_FEAT_MAX)) {
809 error_setg(errp, " ");
810 s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat);
811 error_prepend(errp, "Some features requested in the CPU model are not "
812 "available in the configuration: ");
816 * The base TCG CPU model "qemu" is based on the z900. However, we already
817 * can also emulate some additional features of later CPU generations, so
818 * we add these additional feature bits here.
820 static void add_qemu_cpu_model_features(S390FeatBitmap fbm)
822 static const int feats[] = {
824 S390_FEAT_IDTE_SEGMENT,
826 S390_FEAT_SENSE_RUNNING_STATUS,
827 S390_FEAT_EXTENDED_IMMEDIATE,
828 S390_FEAT_EXTENDED_TRANSLATION_2,
830 S390_FEAT_EXTENDED_TRANSLATION_3,
831 S390_FEAT_LONG_DISPLACEMENT,
832 S390_FEAT_LONG_DISPLACEMENT_FAST,
834 S390_FEAT_STORE_CLOCK_FAST,
835 S390_FEAT_MOVE_WITH_OPTIONAL_SPEC,
837 S390_FEAT_COMPARE_AND_SWAP_AND_STORE,
838 S390_FEAT_COMPARE_AND_SWAP_AND_STORE_2,
839 S390_FEAT_GENERAL_INSTRUCTIONS_EXT,
840 S390_FEAT_EXECUTE_EXT,
841 S390_FEAT_FLOATING_POINT_SUPPPORT_ENH,
844 S390_FEAT_LOCAL_TLB_CLEARING,
845 S390_FEAT_INTERLOCKED_ACCESS_2,
853 for (i = 0; i < ARRAY_SIZE(feats); i++) {
854 set_bit(feats[i], fbm);
858 static S390CPUModel *get_max_cpu_model(Error **errp)
860 static S390CPUModel max_model;
868 kvm_s390_get_host_cpu_model(&max_model, errp);
870 /* TCG emulates a z900 (with some optional additional features) */
871 max_model.def = &s390_cpu_defs[0];
872 bitmap_copy(max_model.features, max_model.def->default_feat,
874 add_qemu_cpu_model_features(max_model.features);
883 static inline void apply_cpu_model(const S390CPUModel *model, Error **errp)
885 #ifndef CONFIG_USER_ONLY
886 static S390CPUModel applied_model;
890 * We have the same model for all VCPUs. KVM can only be configured before
891 * any VCPUs are defined in KVM.
894 if (model && memcmp(&applied_model, model, sizeof(S390CPUModel))) {
895 error_setg(errp, "Mixed CPU models are not supported on s390x.");
901 kvm_s390_apply_cpu_model(model, errp);
907 applied_model = *model;
913 void s390_realize_cpu_model(CPUState *cs, Error **errp)
915 S390CPUClass *xcc = S390_CPU_GET_CLASS(cs);
916 S390CPU *cpu = S390_CPU(cs);
917 const S390CPUModel *max_model;
919 if (xcc->kvm_required && !kvm_enabled()) {
920 error_setg(errp, "CPU definition requires KVM");
925 /* no host model support -> perform compatibility stuff */
926 apply_cpu_model(NULL, errp);
930 max_model = get_max_cpu_model(errp);
932 error_prepend(errp, "CPU models are not available: ");
936 /* copy over properties that can vary */
937 cpu->model->lowest_ibc = max_model->lowest_ibc;
938 cpu->model->cpu_id = max_model->cpu_id;
939 cpu->model->cpu_id_format = max_model->cpu_id_format;
940 cpu->model->cpu_ver = max_model->cpu_ver;
942 check_consistency(cpu->model);
943 check_compatibility(max_model, cpu->model, errp);
948 apply_cpu_model(cpu->model, errp);
950 #if !defined(CONFIG_USER_ONLY)
951 cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model);
953 /* basic mode, write the cpu address into the first 4 bit of the ID */
954 cpu->env.cpuid = deposit64(cpu->env.cpuid, 54, 4, cpu->env.core_id);
959 static void get_feature(Object *obj, Visitor *v, const char *name,
960 void *opaque, Error **errp)
962 S390Feat feat = (S390Feat) opaque;
963 S390CPU *cpu = S390_CPU(obj);
967 error_setg(errp, "Details about the host CPU model are not available, "
968 "features cannot be queried.");
972 value = test_bit(feat, cpu->model->features);
973 visit_type_bool(v, name, &value, errp);
976 static void set_feature(Object *obj, Visitor *v, const char *name,
977 void *opaque, Error **errp)
979 S390Feat feat = (S390Feat) opaque;
980 DeviceState *dev = DEVICE(obj);
981 S390CPU *cpu = S390_CPU(obj);
985 error_setg(errp, "Attempt to set property '%s' on '%s' after "
986 "it was realized", name, object_get_typename(obj));
988 } else if (!cpu->model) {
989 error_setg(errp, "Details about the host CPU model are not available, "
990 "features cannot be changed.");
994 visit_type_bool(v, name, &value, errp);
999 if (!test_bit(feat, cpu->model->def->full_feat)) {
1000 error_setg(errp, "Feature '%s' is not available for CPU model '%s',"
1001 " it was introduced with later models.",
1002 name, cpu->model->def->name);
1005 set_bit(feat, cpu->model->features);
1007 clear_bit(feat, cpu->model->features);
1011 static void get_feature_group(Object *obj, Visitor *v, const char *name,
1012 void *opaque, Error **errp)
1014 S390FeatGroup group = (S390FeatGroup) opaque;
1015 const S390FeatGroupDef *def = s390_feat_group_def(group);
1016 S390CPU *cpu = S390_CPU(obj);
1021 error_setg(errp, "Details about the host CPU model are not available, "
1022 "features cannot be queried.");
1026 /* a group is enabled if all features are enabled */
1027 bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX);
1028 value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX);
1029 visit_type_bool(v, name, &value, errp);
1032 static void set_feature_group(Object *obj, Visitor *v, const char *name,
1033 void *opaque, Error **errp)
1035 S390FeatGroup group = (S390FeatGroup) opaque;
1036 const S390FeatGroupDef *def = s390_feat_group_def(group);
1037 DeviceState *dev = DEVICE(obj);
1038 S390CPU *cpu = S390_CPU(obj);
1041 if (dev->realized) {
1042 error_setg(errp, "Attempt to set property '%s' on '%s' after "
1043 "it was realized", name, object_get_typename(obj));
1045 } else if (!cpu->model) {
1046 error_setg(errp, "Details about the host CPU model are not available, "
1047 "features cannot be changed.");
1051 visit_type_bool(v, name, &value, errp);
1056 /* groups are added in one shot, so an intersect is sufficient */
1057 if (!bitmap_intersects(def->feat, cpu->model->def->full_feat,
1059 error_setg(errp, "Group '%s' is not available for CPU model '%s',"
1060 " it was introduced with later models.",
1061 name, cpu->model->def->name);
1064 bitmap_or(cpu->model->features, cpu->model->features, def->feat,
1067 bitmap_andnot(cpu->model->features, cpu->model->features, def->feat,
1072 void s390_cpu_model_register_props(Object *obj)
1074 S390FeatGroup group;
1077 for (feat = 0; feat < S390_FEAT_MAX; feat++) {
1078 const S390FeatDef *def = s390_feat_def(feat);
1079 object_property_add(obj, def->name, "bool", get_feature,
1080 set_feature, NULL, (void *) feat, NULL);
1081 object_property_set_description(obj, def->name, def->desc , NULL);
1083 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) {
1084 const S390FeatGroupDef *def = s390_feat_group_def(group);
1085 object_property_add(obj, def->name, "bool", get_feature_group,
1086 set_feature_group, NULL, (void *) group, NULL);
1087 object_property_set_description(obj, def->name, def->desc , NULL);
1091 static void s390_cpu_model_initfn(Object *obj)
1093 S390CPU *cpu = S390_CPU(obj);
1094 S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu);
1096 cpu->model = g_malloc0(sizeof(*cpu->model));
1097 /* copy the model, so we can modify it */
1098 cpu->model->def = xcc->cpu_def;
1099 if (xcc->is_static) {
1100 /* base model - features will never change */
1101 bitmap_copy(cpu->model->features, cpu->model->def->base_feat,
1104 /* latest model - features can change */
1105 bitmap_copy(cpu->model->features,
1106 cpu->model->def->default_feat, S390_FEAT_MAX);
1111 static void s390_host_cpu_model_initfn(Object *obj)
1113 S390CPU *cpu = S390_CPU(obj);
1116 if (!kvm_enabled() || !kvm_s390_cpu_models_supported()) {
1120 cpu->model = g_malloc0(sizeof(*cpu->model));
1121 kvm_s390_get_host_cpu_model(cpu->model, &err);
1123 error_report_err(err);
1125 /* fallback to unsupported cpu models */
1131 static void s390_qemu_cpu_model_initfn(Object *obj)
1133 static S390CPUDef s390_qemu_cpu_defs;
1134 S390CPU *cpu = S390_CPU(obj);
1136 cpu->model = g_malloc0(sizeof(*cpu->model));
1137 /* TCG emulates a z900 (with some optional additional features) */
1138 memcpy(&s390_qemu_cpu_defs, &s390_cpu_defs[0], sizeof(s390_qemu_cpu_defs));
1139 add_qemu_cpu_model_features(s390_qemu_cpu_defs.full_feat);
1140 cpu->model->def = &s390_qemu_cpu_defs;
1141 bitmap_copy(cpu->model->features, cpu->model->def->default_feat,
1145 static void s390_cpu_model_finalize(Object *obj)
1147 S390CPU *cpu = S390_CPU(obj);
1153 static bool get_is_migration_safe(Object *obj, Error **errp)
1155 return S390_CPU_GET_CLASS(obj)->is_migration_safe;
1158 static bool get_is_static(Object *obj, Error **errp)
1160 return S390_CPU_GET_CLASS(obj)->is_static;
1163 static char *get_description(Object *obj, Error **errp)
1165 return g_strdup(S390_CPU_GET_CLASS(obj)->desc);
1168 void s390_cpu_model_class_register_props(ObjectClass *oc)
1170 object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe,
1172 object_class_property_add_bool(oc, "static", get_is_static,
1174 object_class_property_add_str(oc, "description", get_description, NULL,
1179 static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data)
1181 S390CPUClass *xcc = S390_CPU_CLASS(oc);
1183 xcc->kvm_required = true;
1184 xcc->desc = "KVM only: All recognized features";
1188 static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data)
1190 S390CPUClass *xcc = S390_CPU_CLASS(oc);
1192 /* all base models are migration safe */
1193 xcc->cpu_def = (const S390CPUDef *) data;
1194 xcc->is_migration_safe = true;
1195 xcc->is_static = true;
1196 xcc->desc = xcc->cpu_def->desc;
1199 static void s390_cpu_model_class_init(ObjectClass *oc, void *data)
1201 S390CPUClass *xcc = S390_CPU_CLASS(oc);
1203 /* model that can change between QEMU versions */
1204 xcc->cpu_def = (const S390CPUDef *) data;
1205 xcc->is_migration_safe = true;
1206 xcc->desc = xcc->cpu_def->desc;
1209 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data)
1211 S390CPUClass *xcc = S390_CPU_CLASS(oc);
1213 xcc->is_migration_safe = true;
1214 xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s",
1218 /* Generate type name for a cpu model. Caller has to free the string. */
1219 static char *s390_cpu_type_name(const char *model_name)
1221 return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name);
1224 /* Generate type name for a base cpu model. Caller has to free the string. */
1225 static char *s390_base_cpu_type_name(const char *model_name)
1227 return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name);
1230 ObjectClass *s390_cpu_class_by_name(const char *name)
1232 char *typename = s390_cpu_type_name(name);
1235 oc = object_class_by_name(typename);
1240 static const TypeInfo qemu_s390_cpu_type_info = {
1241 .name = S390_CPU_TYPE_NAME("qemu"),
1242 .parent = TYPE_S390_CPU,
1243 .instance_init = s390_qemu_cpu_model_initfn,
1244 .instance_finalize = s390_cpu_model_finalize,
1245 .class_init = s390_qemu_cpu_model_class_init,
1249 static const TypeInfo host_s390_cpu_type_info = {
1250 .name = S390_CPU_TYPE_NAME("host"),
1251 .parent = TYPE_S390_CPU,
1252 .instance_init = s390_host_cpu_model_initfn,
1253 .instance_finalize = s390_cpu_model_finalize,
1254 .class_init = s390_host_cpu_model_class_init,
1258 static void init_ignored_base_feat(void)
1260 static const int feats[] = {
1261 /* MSA subfunctions that could not be available on certain machines */
1263 S390_FEAT_KMAC_TDEA_128,
1264 S390_FEAT_KMAC_TDEA_192,
1266 S390_FEAT_KMC_TDEA_128,
1267 S390_FEAT_KMC_TDEA_192,
1269 S390_FEAT_KM_TDEA_128,
1270 S390_FEAT_KM_TDEA_192,
1271 S390_FEAT_KIMD_SHA_1,
1272 S390_FEAT_KLMD_SHA_1,
1276 for (i = 0; i < ARRAY_SIZE(feats); i++) {
1277 set_bit(feats[i], ignored_base_feat);
1281 static void register_types(void)
1285 init_ignored_base_feat();
1287 /* init all bitmaps from gnerated data initially */
1288 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
1289 s390_init_feat_bitmap(s390_cpu_defs[i].base_init,
1290 s390_cpu_defs[i].base_feat);
1291 s390_init_feat_bitmap(s390_cpu_defs[i].default_init,
1292 s390_cpu_defs[i].default_feat);
1293 s390_init_feat_bitmap(s390_cpu_defs[i].full_init,
1294 s390_cpu_defs[i].full_feat);
1297 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
1298 char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name);
1299 TypeInfo ti_base = {
1301 .parent = TYPE_S390_CPU,
1302 .instance_init = s390_cpu_model_initfn,
1303 .instance_finalize = s390_cpu_model_finalize,
1304 .class_init = s390_base_cpu_model_class_init,
1305 .class_data = (void *) &s390_cpu_defs[i],
1307 char *name = s390_cpu_type_name(s390_cpu_defs[i].name);
1310 .parent = TYPE_S390_CPU,
1311 .instance_init = s390_cpu_model_initfn,
1312 .instance_finalize = s390_cpu_model_finalize,
1313 .class_init = s390_cpu_model_class_init,
1314 .class_data = (void *) &s390_cpu_defs[i],
1317 type_register_static(&ti_base);
1318 type_register_static(&ti);
1323 type_register_static(&qemu_s390_cpu_type_info);
1325 type_register_static(&host_s390_cpu_type_info);
1329 type_init(register_types)