4 * Copyright 2016 IBM Corp.
6 * Author(s): David Hildenbrand <dahi@linux.vnet.ibm.com>
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"
15 #include "gen-features.h"
16 #include "qapi/error.h"
17 #include "qapi/visitor.h"
18 #include "qemu/error-report.h"
19 #include "qapi/qmp/qerror.h"
20 #include "qapi/qobject-input-visitor.h"
21 #include "qapi/qmp/qbool.h"
22 #ifndef CONFIG_USER_ONLY
23 #include "sysemu/arch_init.h"
26 #define CPUDEF_INIT(_type, _gen, _ec_ga, _mha_pow, _hmfai, _name, _desc) \
32 .mha_pow = _mha_pow, \
35 .base_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _BASE }, \
36 .default_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _DEFAULT }, \
37 .full_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _FULL }, \
41 * CPU definiton list in order of release. For now, base features of a
42 * following release are always a subset of base features of the previous
43 * release. Same is correct for the other feature sets.
44 * A BC release always follows the corresponding EC release.
46 static S390CPUDef s390_cpu_defs
[] = {
47 CPUDEF_INIT(0x2064, 7, 1, 38, 0x00000000U
, "z900", "IBM zSeries 900 GA1"),
48 CPUDEF_INIT(0x2064, 7, 2, 38, 0x00000000U
, "z900.2", "IBM zSeries 900 GA2"),
49 CPUDEF_INIT(0x2064, 7, 3, 38, 0x00000000U
, "z900.3", "IBM zSeries 900 GA3"),
50 CPUDEF_INIT(0x2066, 7, 3, 38, 0x00000000U
, "z800", "IBM zSeries 800 GA1"),
51 CPUDEF_INIT(0x2084, 8, 1, 38, 0x00000000U
, "z990", "IBM zSeries 990 GA1"),
52 CPUDEF_INIT(0x2084, 8, 2, 38, 0x00000000U
, "z990.2", "IBM zSeries 990 GA2"),
53 CPUDEF_INIT(0x2084, 8, 3, 38, 0x00000000U
, "z990.3", "IBM zSeries 990 GA3"),
54 CPUDEF_INIT(0x2086, 8, 3, 38, 0x00000000U
, "z890", "IBM zSeries 880 GA1"),
55 CPUDEF_INIT(0x2084, 8, 4, 38, 0x00000000U
, "z990.4", "IBM zSeries 990 GA4"),
56 CPUDEF_INIT(0x2086, 8, 4, 38, 0x00000000U
, "z890.2", "IBM zSeries 880 GA2"),
57 CPUDEF_INIT(0x2084, 8, 5, 38, 0x00000000U
, "z990.5", "IBM zSeries 990 GA5"),
58 CPUDEF_INIT(0x2086, 8, 5, 38, 0x00000000U
, "z890.3", "IBM zSeries 880 GA3"),
59 CPUDEF_INIT(0x2094, 9, 1, 40, 0x00000000U
, "z9EC", "IBM System z9 EC GA1"),
60 CPUDEF_INIT(0x2094, 9, 2, 40, 0x00000000U
, "z9EC.2", "IBM System z9 EC GA2"),
61 CPUDEF_INIT(0x2096, 9, 2, 40, 0x00000000U
, "z9BC", "IBM System z9 BC GA1"),
62 CPUDEF_INIT(0x2094, 9, 3, 40, 0x00000000U
, "z9EC.3", "IBM System z9 EC GA3"),
63 CPUDEF_INIT(0x2096, 9, 3, 40, 0x00000000U
, "z9BC.2", "IBM System z9 BC GA2"),
64 CPUDEF_INIT(0x2097, 10, 1, 43, 0x00000000U
, "z10EC", "IBM System z10 EC GA1"),
65 CPUDEF_INIT(0x2097, 10, 2, 43, 0x00000000U
, "z10EC.2", "IBM System z10 EC GA2"),
66 CPUDEF_INIT(0x2098, 10, 2, 43, 0x00000000U
, "z10BC", "IBM System z10 BC GA1"),
67 CPUDEF_INIT(0x2097, 10, 3, 43, 0x00000000U
, "z10EC.3", "IBM System z10 EC GA3"),
68 CPUDEF_INIT(0x2098, 10, 3, 43, 0x00000000U
, "z10BC.2", "IBM System z10 BC GA2"),
69 CPUDEF_INIT(0x2817, 11, 1, 44, 0x08000000U
, "z196", "IBM zEnterprise 196 GA1"),
70 CPUDEF_INIT(0x2817, 11, 2, 44, 0x08000000U
, "z196.2", "IBM zEnterprise 196 GA2"),
71 CPUDEF_INIT(0x2818, 11, 2, 44, 0x08000000U
, "z114", "IBM zEnterprise 114 GA1"),
72 CPUDEF_INIT(0x2827, 12, 1, 44, 0x08000000U
, "zEC12", "IBM zEnterprise EC12 GA1"),
73 CPUDEF_INIT(0x2827, 12, 2, 44, 0x08000000U
, "zEC12.2", "IBM zEnterprise EC12 GA2"),
74 CPUDEF_INIT(0x2828, 12, 2, 44, 0x08000000U
, "zBC12", "IBM zEnterprise BC12 GA1"),
75 CPUDEF_INIT(0x2964, 13, 1, 47, 0x08000000U
, "z13", "IBM z13 GA1"),
76 CPUDEF_INIT(0x2964, 13, 2, 47, 0x08000000U
, "z13.2", "IBM z13 GA2"),
77 CPUDEF_INIT(0x2965, 13, 2, 47, 0x08000000U
, "z13s", "IBM z13s GA1"),
78 CPUDEF_INIT(0x3906, 14, 1, 47, 0x08000000U
, "z14", "IBM z14 GA1"),
81 /* features part of a base model but not relevant for finding a base model */
82 S390FeatBitmap ignored_base_feat
;
84 void s390_cpudef_featoff(uint8_t gen
, uint8_t ec_ga
, S390Feat feat
)
86 const S390CPUDef
*def
;
88 def
= s390_find_cpu_def(0, gen
, ec_ga
, NULL
);
89 clear_bit(feat
, (unsigned long *)&def
->default_feat
);
92 void s390_cpudef_featoff_greater(uint8_t gen
, uint8_t ec_ga
, S390Feat feat
)
96 for (i
= 0; i
< ARRAY_SIZE(s390_cpu_defs
); i
++) {
97 const S390CPUDef
*def
= &s390_cpu_defs
[i
];
102 if (def
->gen
== gen
&& def
->ec_ga
< ec_ga
) {
106 clear_bit(feat
, (unsigned long *)&def
->default_feat
);
110 uint32_t s390_get_hmfai(void)
115 cpu
= S390_CPU(qemu_get_cpu(0));
118 if (!cpu
|| !cpu
->model
) {
121 return cpu
->model
->def
->hmfai
;
124 uint8_t s390_get_mha_pow(void)
129 cpu
= S390_CPU(qemu_get_cpu(0));
132 if (!cpu
|| !cpu
->model
) {
135 return cpu
->model
->def
->mha_pow
;
138 uint32_t s390_get_ibc_val(void)
140 uint16_t unblocked_ibc
, lowest_ibc
;
144 cpu
= S390_CPU(qemu_get_cpu(0));
147 if (!cpu
|| !cpu
->model
) {
150 unblocked_ibc
= s390_ibc_from_cpu_model(cpu
->model
);
151 lowest_ibc
= cpu
->model
->lowest_ibc
;
152 /* the lowest_ibc always has to be <= unblocked_ibc */
153 if (!lowest_ibc
|| lowest_ibc
> unblocked_ibc
) {
156 return ((uint32_t) lowest_ibc
<< 16) | unblocked_ibc
;
159 void s390_get_feat_block(S390FeatType type
, uint8_t *data
)
164 cpu
= S390_CPU(qemu_get_cpu(0));
167 if (!cpu
|| !cpu
->model
) {
170 s390_fill_feat_block(cpu
->model
->features
, type
, data
);
173 bool s390_has_feat(S390Feat feat
)
178 cpu
= S390_CPU(qemu_get_cpu(0));
181 if (!cpu
|| !cpu
->model
) {
184 if (feat
== S390_FEAT_VECTOR
) {
185 return kvm_check_extension(kvm_state
,
186 KVM_CAP_S390_VECTOR_REGISTERS
);
188 if (feat
== S390_FEAT_RUNTIME_INSTRUMENTATION
) {
189 return kvm_s390_get_ri();
191 if (feat
== S390_FEAT_MSA_EXT_3
) {
198 return test_bit(feat
, cpu
->model
->features
);
201 uint8_t s390_get_gen_for_cpu_type(uint16_t type
)
205 for (i
= 0; i
< ARRAY_SIZE(s390_cpu_defs
); i
++) {
206 if (s390_cpu_defs
[i
].type
== type
) {
207 return s390_cpu_defs
[i
].gen
;
213 const S390CPUDef
*s390_find_cpu_def(uint16_t type
, uint8_t gen
, uint8_t ec_ga
,
214 S390FeatBitmap features
)
216 const S390CPUDef
*last_compatible
= NULL
;
217 const S390CPUDef
*matching_cpu_type
= NULL
;
224 gen
= s390_get_gen_for_cpu_type(type
);
227 for (i
= 0; i
< ARRAY_SIZE(s390_cpu_defs
); i
++) {
228 const S390CPUDef
*def
= &s390_cpu_defs
[i
];
229 S390FeatBitmap missing
;
231 /* don't even try newer generations if we know the generation */
233 if (def
->gen
> gen
) {
235 } else if (def
->gen
== gen
&& ec_ga
&& def
->ec_ga
> ec_ga
) {
241 /* see if the model satisfies the minimum features */
242 bitmap_andnot(missing
, def
->base_feat
, features
, S390_FEAT_MAX
);
244 * Ignore certain features that are in the base model, but not
245 * relevant for the search (esp. MSA subfunctions).
247 bitmap_andnot(missing
, missing
, ignored_base_feat
, S390_FEAT_MAX
);
248 if (!bitmap_empty(missing
, S390_FEAT_MAX
)) {
253 /* stop the search if we found the exact model */
254 if (def
->type
== type
&& def
->ec_ga
== ec_ga
) {
257 /* remember if we've at least seen one with the same cpu type */
258 if (def
->type
== type
) {
259 matching_cpu_type
= def
;
261 last_compatible
= def
;
263 /* prefer the model with the same cpu type, esp. don't take the BC for EC */
264 if (matching_cpu_type
) {
265 return matching_cpu_type
;
267 return last_compatible
;
270 struct S390PrintCpuListInfo
{
272 fprintf_function print
;
275 static void print_cpu_model_list(ObjectClass
*klass
, void *opaque
)
277 struct S390PrintCpuListInfo
*info
= opaque
;
278 S390CPUClass
*scc
= S390_CPU_CLASS(klass
);
279 char *name
= g_strdup(object_class_get_name(klass
));
280 const char *details
= "";
282 if (scc
->is_static
) {
283 details
= "(static, migration-safe)";
284 } else if (scc
->is_migration_safe
) {
285 details
= "(migration-safe)";
288 /* strip off the -s390-cpu */
289 g_strrstr(name
, "-" TYPE_S390_CPU
)[0] = 0;
290 (*info
->print
)(info
->f
, "s390 %-15s %-35s %s\n", name
, scc
->desc
,
295 void s390_cpu_list(FILE *f
, fprintf_function print
)
297 struct S390PrintCpuListInfo info
= {
304 object_class_foreach(print_cpu_model_list
, TYPE_S390_CPU
, false, &info
);
306 (*print
)(f
, "\nRecognized feature flags:\n");
307 for (feat
= 0; feat
< S390_FEAT_MAX
; feat
++) {
308 const S390FeatDef
*def
= s390_feat_def(feat
);
310 (*print
)(f
, "%-20s %-50s\n", def
->name
, def
->desc
);
313 (*print
)(f
, "\nRecognized feature groups:\n");
314 for (group
= 0; group
< S390_FEAT_GROUP_MAX
; group
++) {
315 const S390FeatGroupDef
*def
= s390_feat_group_def(group
);
317 (*print
)(f
, "%-20s %-50s\n", def
->name
, def
->desc
);
321 static S390CPUModel
*get_max_cpu_model(Error
**errp
);
323 #ifndef CONFIG_USER_ONLY
324 static void list_add_feat(const char *name
, void *opaque
);
326 static void check_unavailable_features(const S390CPUModel
*max_model
,
327 const S390CPUModel
*model
,
328 strList
**unavailable
)
330 S390FeatBitmap missing
;
332 /* check general model compatibility */
333 if (max_model
->def
->gen
< model
->def
->gen
||
334 (max_model
->def
->gen
== model
->def
->gen
&&
335 max_model
->def
->ec_ga
< model
->def
->ec_ga
)) {
336 list_add_feat("type", unavailable
);
339 /* detect missing features if any to properly report them */
340 bitmap_andnot(missing
, model
->features
, max_model
->features
,
342 if (!bitmap_empty(missing
, S390_FEAT_MAX
)) {
343 s390_feat_bitmap_to_ascii(missing
, unavailable
, list_add_feat
);
347 struct CpuDefinitionInfoListData
{
348 CpuDefinitionInfoList
*list
;
352 static void create_cpu_model_list(ObjectClass
*klass
, void *opaque
)
354 struct CpuDefinitionInfoListData
*cpu_list_data
= opaque
;
355 CpuDefinitionInfoList
**cpu_list
= &cpu_list_data
->list
;
356 CpuDefinitionInfoList
*entry
;
357 CpuDefinitionInfo
*info
;
358 char *name
= g_strdup(object_class_get_name(klass
));
359 S390CPUClass
*scc
= S390_CPU_CLASS(klass
);
361 /* strip off the -s390-cpu */
362 g_strrstr(name
, "-" TYPE_S390_CPU
)[0] = 0;
363 info
= g_malloc0(sizeof(*info
));
365 info
->has_migration_safe
= true;
366 info
->migration_safe
= scc
->is_migration_safe
;
367 info
->q_static
= scc
->is_static
;
368 info
->q_typename
= g_strdup(object_class_get_name(klass
));
369 /* check for unavailable features */
370 if (cpu_list_data
->model
) {
373 obj
= object_new(object_class_get_name(klass
));
376 info
->has_unavailable_features
= true;
377 check_unavailable_features(cpu_list_data
->model
, sc
->model
,
378 &info
->unavailable_features
);
383 entry
= g_malloc0(sizeof(*entry
));
385 entry
->next
= *cpu_list
;
389 CpuDefinitionInfoList
*arch_query_cpu_definitions(Error
**errp
)
391 struct CpuDefinitionInfoListData list_data
= {
395 list_data
.model
= get_max_cpu_model(errp
);
401 object_class_foreach(create_cpu_model_list
, TYPE_S390_CPU
, false,
404 return list_data
.list
;
407 static void cpu_model_from_info(S390CPUModel
*model
, const CpuModelInfo
*info
,
410 const QDict
*qdict
= NULL
;
418 qdict
= qobject_to_qdict(info
->props
);
420 error_setg(errp
, QERR_INVALID_PARAMETER_TYPE
, "props", "dict");
425 oc
= cpu_class_by_name(TYPE_S390_CPU
, info
->name
);
427 error_setg(errp
, "The CPU definition \'%s\' is unknown.", info
->name
);
430 if (S390_CPU_CLASS(oc
)->kvm_required
&& !kvm_enabled()) {
431 error_setg(errp
, "The CPU definition '%s' requires KVM", info
->name
);
434 obj
= object_new(object_class_get_name(oc
));
438 error_setg(errp
, "Details about the host CPU model are not available, "
439 "it cannot be used.");
445 visitor
= qobject_input_visitor_new(info
->props
);
446 visit_start_struct(visitor
, NULL
, NULL
, 0, errp
);
451 for (e
= qdict_first(qdict
); e
; e
= qdict_next(qdict
, e
)) {
452 object_property_set(obj
, visitor
, e
->key
, errp
);
458 visit_check_struct(visitor
, errp
);
460 visit_end_struct(visitor
, NULL
);
468 /* copy the model and throw the cpu away */
469 memcpy(model
, cpu
->model
, sizeof(*model
));
473 static void qdict_add_disabled_feat(const char *name
, void *opaque
)
475 qdict_put_bool(opaque
, name
, false);
478 static void qdict_add_enabled_feat(const char *name
, void *opaque
)
480 qdict_put_bool(opaque
, name
, true);
483 /* convert S390CPUDef into a static CpuModelInfo */
484 static void cpu_info_from_model(CpuModelInfo
*info
, const S390CPUModel
*model
,
487 QDict
*qdict
= qdict_new();
488 S390FeatBitmap bitmap
;
490 /* always fallback to the static base model */
491 info
->name
= g_strdup_printf("%s-base", model
->def
->name
);
494 /* features deleted from the base feature set */
495 bitmap_andnot(bitmap
, model
->def
->base_feat
, model
->features
,
497 if (!bitmap_empty(bitmap
, S390_FEAT_MAX
)) {
498 s390_feat_bitmap_to_ascii(bitmap
, qdict
, qdict_add_disabled_feat
);
501 /* features added to the base feature set */
502 bitmap_andnot(bitmap
, model
->features
, model
->def
->base_feat
,
504 if (!bitmap_empty(bitmap
, S390_FEAT_MAX
)) {
505 s390_feat_bitmap_to_ascii(bitmap
, qdict
, qdict_add_enabled_feat
);
508 /* expand all features */
509 s390_feat_bitmap_to_ascii(model
->features
, qdict
,
510 qdict_add_enabled_feat
);
511 bitmap_complement(bitmap
, model
->features
, S390_FEAT_MAX
);
512 s390_feat_bitmap_to_ascii(bitmap
, qdict
, qdict_add_disabled_feat
);
515 if (!qdict_size(qdict
)) {
518 info
->props
= QOBJECT(qdict
);
519 info
->has_props
= true;
523 CpuModelExpansionInfo
*arch_query_cpu_model_expansion(CpuModelExpansionType type
,
527 CpuModelExpansionInfo
*expansion_info
= NULL
;
528 S390CPUModel s390_model
;
529 bool delta_changes
= false;
531 /* convert it to our internal representation */
532 cpu_model_from_info(&s390_model
, model
, errp
);
537 if (type
== CPU_MODEL_EXPANSION_TYPE_STATIC
) {
538 delta_changes
= true;
539 } else if (type
!= CPU_MODEL_EXPANSION_TYPE_FULL
) {
540 error_setg(errp
, "The requested expansion type is not supported.");
544 /* convert it back to a static representation */
545 expansion_info
= g_malloc0(sizeof(*expansion_info
));
546 expansion_info
->model
= g_malloc0(sizeof(*expansion_info
->model
));
547 cpu_info_from_model(expansion_info
->model
, &s390_model
, delta_changes
);
548 return expansion_info
;
551 static void list_add_feat(const char *name
, void *opaque
)
553 strList
**last
= (strList
**) opaque
;
556 entry
= g_malloc0(sizeof(*entry
));
557 entry
->value
= g_strdup(name
);
562 CpuModelCompareInfo
*arch_query_cpu_model_comparison(CpuModelInfo
*infoa
,
566 CpuModelCompareResult feat_result
, gen_result
;
567 CpuModelCompareInfo
*compare_info
;
568 S390FeatBitmap missing
, added
;
569 S390CPUModel modela
, modelb
;
571 /* convert both models to our internal representation */
572 cpu_model_from_info(&modela
, infoa
, errp
);
576 cpu_model_from_info(&modelb
, infob
, errp
);
580 compare_info
= g_malloc0(sizeof(*compare_info
));
582 /* check the cpu generation and ga level */
583 if (modela
.def
->gen
== modelb
.def
->gen
) {
584 if (modela
.def
->ec_ga
== modelb
.def
->ec_ga
) {
585 /* ec and corresponding bc are identical */
586 gen_result
= CPU_MODEL_COMPARE_RESULT_IDENTICAL
;
587 } else if (modela
.def
->ec_ga
< modelb
.def
->ec_ga
) {
588 gen_result
= CPU_MODEL_COMPARE_RESULT_SUBSET
;
590 gen_result
= CPU_MODEL_COMPARE_RESULT_SUPERSET
;
592 } else if (modela
.def
->gen
< modelb
.def
->gen
) {
593 gen_result
= CPU_MODEL_COMPARE_RESULT_SUBSET
;
595 gen_result
= CPU_MODEL_COMPARE_RESULT_SUPERSET
;
597 if (gen_result
!= CPU_MODEL_COMPARE_RESULT_IDENTICAL
) {
598 /* both models cannot be made identical */
599 list_add_feat("type", &compare_info
->responsible_properties
);
602 /* check the feature set */
603 if (bitmap_equal(modela
.features
, modelb
.features
, S390_FEAT_MAX
)) {
604 feat_result
= CPU_MODEL_COMPARE_RESULT_IDENTICAL
;
606 bitmap_andnot(missing
, modela
.features
, modelb
.features
, S390_FEAT_MAX
);
607 s390_feat_bitmap_to_ascii(missing
,
608 &compare_info
->responsible_properties
,
610 bitmap_andnot(added
, modelb
.features
, modela
.features
, S390_FEAT_MAX
);
611 s390_feat_bitmap_to_ascii(added
, &compare_info
->responsible_properties
,
613 if (bitmap_empty(missing
, S390_FEAT_MAX
)) {
614 feat_result
= CPU_MODEL_COMPARE_RESULT_SUBSET
;
615 } else if (bitmap_empty(added
, S390_FEAT_MAX
)) {
616 feat_result
= CPU_MODEL_COMPARE_RESULT_SUPERSET
;
618 feat_result
= CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE
;
622 /* combine the results */
623 if (gen_result
== feat_result
) {
624 compare_info
->result
= gen_result
;
625 } else if (feat_result
== CPU_MODEL_COMPARE_RESULT_IDENTICAL
) {
626 compare_info
->result
= gen_result
;
627 } else if (gen_result
== CPU_MODEL_COMPARE_RESULT_IDENTICAL
) {
628 compare_info
->result
= feat_result
;
630 compare_info
->result
= CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE
;
635 CpuModelBaselineInfo
*arch_query_cpu_model_baseline(CpuModelInfo
*infoa
,
639 CpuModelBaselineInfo
*baseline_info
;
640 S390CPUModel modela
, modelb
, model
;
645 /* convert both models to our internal representation */
646 cpu_model_from_info(&modela
, infoa
, errp
);
651 cpu_model_from_info(&modelb
, infob
, errp
);
656 /* features both models support */
657 bitmap_and(model
.features
, modela
.features
, modelb
.features
, S390_FEAT_MAX
);
659 /* detect the maximum model not regarding features */
660 if (modela
.def
->gen
== modelb
.def
->gen
) {
661 if (modela
.def
->type
== modelb
.def
->type
) {
662 cpu_type
= modela
.def
->type
;
666 max_gen
= modela
.def
->gen
;
667 max_gen_ga
= MIN(modela
.def
->ec_ga
, modelb
.def
->ec_ga
);
668 } else if (modela
.def
->gen
> modelb
.def
->gen
) {
669 cpu_type
= modelb
.def
->type
;
670 max_gen
= modelb
.def
->gen
;
671 max_gen_ga
= modelb
.def
->ec_ga
;
673 cpu_type
= modela
.def
->type
;
674 max_gen
= modela
.def
->gen
;
675 max_gen_ga
= modela
.def
->ec_ga
;
678 model
.def
= s390_find_cpu_def(cpu_type
, max_gen
, max_gen_ga
,
680 /* strip off features not part of the max model */
681 bitmap_and(model
.features
, model
.features
, model
.def
->full_feat
,
684 baseline_info
= g_malloc0(sizeof(*baseline_info
));
685 baseline_info
->model
= g_malloc0(sizeof(*baseline_info
->model
));
686 cpu_info_from_model(baseline_info
->model
, &model
, true);
687 return baseline_info
;
691 static void check_consistency(const S390CPUModel
*model
)
693 static int dep
[][2] = {
694 { S390_FEAT_IPTE_RANGE
, S390_FEAT_DAT_ENH
},
695 { S390_FEAT_IDTE_SEGMENT
, S390_FEAT_DAT_ENH
},
696 { S390_FEAT_IDTE_REGION
, S390_FEAT_DAT_ENH
},
697 { S390_FEAT_IDTE_REGION
, S390_FEAT_IDTE_SEGMENT
},
698 { S390_FEAT_LOCAL_TLB_CLEARING
, S390_FEAT_DAT_ENH
},
699 { S390_FEAT_LONG_DISPLACEMENT_FAST
, S390_FEAT_LONG_DISPLACEMENT
},
700 { S390_FEAT_DFP_FAST
, S390_FEAT_DFP
},
701 { S390_FEAT_TRANSACTIONAL_EXE
, S390_FEAT_STFLE_49
},
702 { S390_FEAT_EDAT_2
, S390_FEAT_EDAT
},
703 { S390_FEAT_MSA_EXT_5
, S390_FEAT_KIMD_SHA_512
},
704 { S390_FEAT_MSA_EXT_5
, S390_FEAT_KLMD_SHA_512
},
705 { S390_FEAT_MSA_EXT_4
, S390_FEAT_MSA_EXT_3
},
706 { S390_FEAT_SIE_CMMA
, S390_FEAT_CMM
},
707 { S390_FEAT_SIE_CMMA
, S390_FEAT_SIE_GSLS
},
708 { S390_FEAT_SIE_PFMFI
, S390_FEAT_EDAT
},
709 { S390_FEAT_MSA_EXT_8
, S390_FEAT_MSA_EXT_3
},
710 { S390_FEAT_MULTIPLE_EPOCH
, S390_FEAT_TOD_CLOCK_STEERING
},
711 { S390_FEAT_VECTOR_PACKED_DECIMAL
, S390_FEAT_VECTOR
},
712 { S390_FEAT_VECTOR_ENH
, S390_FEAT_VECTOR
},
713 { S390_FEAT_INSTRUCTION_EXEC_PROT
, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2
},
714 { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2
, S390_FEAT_ESOP
},
715 { S390_FEAT_CMM_NT
, S390_FEAT_CMM
},
716 { S390_FEAT_GUARDED_STORAGE
, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2
},
717 { S390_FEAT_MULTIPLE_EPOCH
, S390_FEAT_STORE_CLOCK_FAST
},
718 { S390_FEAT_MULTIPLE_EPOCH
, S390_FEAT_TOD_CLOCK_STEERING
},
719 { S390_FEAT_SEMAPHORE_ASSIST
, S390_FEAT_STFLE_49
},
720 { S390_FEAT_KIMD_SHA3_224
, S390_FEAT_MSA
},
721 { S390_FEAT_KIMD_SHA3_256
, S390_FEAT_MSA
},
722 { S390_FEAT_KIMD_SHA3_384
, S390_FEAT_MSA
},
723 { S390_FEAT_KIMD_SHA3_512
, S390_FEAT_MSA
},
724 { S390_FEAT_KIMD_SHAKE_128
, S390_FEAT_MSA
},
725 { S390_FEAT_KIMD_SHAKE_256
, S390_FEAT_MSA
},
726 { S390_FEAT_KLMD_SHA3_224
, S390_FEAT_MSA
},
727 { S390_FEAT_KLMD_SHA3_256
, S390_FEAT_MSA
},
728 { S390_FEAT_KLMD_SHA3_384
, S390_FEAT_MSA
},
729 { S390_FEAT_KLMD_SHA3_512
, S390_FEAT_MSA
},
730 { S390_FEAT_KLMD_SHAKE_128
, S390_FEAT_MSA
},
731 { S390_FEAT_KLMD_SHAKE_256
, S390_FEAT_MSA
},
732 { S390_FEAT_PRNO_TRNG_QRTCR
, S390_FEAT_MSA_EXT_5
},
733 { S390_FEAT_PRNO_TRNG
, S390_FEAT_MSA_EXT_5
},
734 { S390_FEAT_SIE_KSS
, S390_FEAT_SIE_F2
},
738 for (i
= 0; i
< ARRAY_SIZE(dep
); i
++) {
739 if (test_bit(dep
[i
][0], model
->features
) &&
740 !test_bit(dep
[i
][1], model
->features
)) {
741 warn_report("\'%s\' requires \'%s\'.",
742 s390_feat_def(dep
[i
][0])->name
,
743 s390_feat_def(dep
[i
][1])->name
);
748 static void error_prepend_missing_feat(const char *name
, void *opaque
)
750 error_prepend((Error
**) opaque
, "%s ", name
);
753 static void check_compatibility(const S390CPUModel
*max_model
,
754 const S390CPUModel
*model
, Error
**errp
)
756 S390FeatBitmap missing
;
758 if (model
->def
->gen
> max_model
->def
->gen
) {
759 error_setg(errp
, "Selected CPU generation is too new. Maximum "
760 "supported model in the configuration: \'%s\'",
761 max_model
->def
->name
);
763 } else if (model
->def
->gen
== max_model
->def
->gen
&&
764 model
->def
->ec_ga
> max_model
->def
->ec_ga
) {
765 error_setg(errp
, "Selected CPU GA level is too new. Maximum "
766 "supported model in the configuration: \'%s\'",
767 max_model
->def
->name
);
771 /* detect the missing features to properly report them */
772 bitmap_andnot(missing
, model
->features
, max_model
->features
, S390_FEAT_MAX
);
773 if (bitmap_empty(missing
, S390_FEAT_MAX
)) {
777 error_setg(errp
, " ");
778 s390_feat_bitmap_to_ascii(missing
, errp
, error_prepend_missing_feat
);
779 error_prepend(errp
, "Some features requested in the CPU model are not "
780 "available in the configuration: ");
784 * The base TCG CPU model "qemu" is based on the z900. However, we already
785 * can also emulate some additional features of later CPU generations, so
786 * we add these additional feature bits here.
788 static void add_qemu_cpu_model_features(S390FeatBitmap fbm
)
790 static const int feats
[] = {
792 S390_FEAT_IDTE_SEGMENT
,
794 S390_FEAT_EXTENDED_IMMEDIATE
,
795 S390_FEAT_EXTENDED_TRANSLATION_2
,
796 S390_FEAT_EXTENDED_TRANSLATION_3
,
797 S390_FEAT_LONG_DISPLACEMENT
,
798 S390_FEAT_LONG_DISPLACEMENT_FAST
,
800 S390_FEAT_STORE_CLOCK_FAST
,
801 S390_FEAT_MOVE_WITH_OPTIONAL_SPEC
,
803 S390_FEAT_COMPARE_AND_SWAP_AND_STORE
,
804 S390_FEAT_COMPARE_AND_SWAP_AND_STORE_2
,
805 S390_FEAT_GENERAL_INSTRUCTIONS_EXT
,
806 S390_FEAT_EXECUTE_EXT
,
807 S390_FEAT_FLOATING_POINT_SUPPPORT_ENH
,
810 S390_FEAT_LOCAL_TLB_CLEARING
,
815 for (i
= 0; i
< ARRAY_SIZE(feats
); i
++) {
816 set_bit(feats
[i
], fbm
);
820 static S390CPUModel
*get_max_cpu_model(Error
**errp
)
822 static S390CPUModel max_model
;
830 kvm_s390_get_host_cpu_model(&max_model
, errp
);
832 /* TCG emulates a z900 (with some optional additional features) */
833 max_model
.def
= &s390_cpu_defs
[0];
834 bitmap_copy(max_model
.features
, max_model
.def
->default_feat
,
836 add_qemu_cpu_model_features(max_model
.features
);
845 static inline void apply_cpu_model(const S390CPUModel
*model
, Error
**errp
)
847 #ifndef CONFIG_USER_ONLY
848 static S390CPUModel applied_model
;
852 * We have the same model for all VCPUs. KVM can only be configured before
853 * any VCPUs are defined in KVM.
856 if (model
&& memcmp(&applied_model
, model
, sizeof(S390CPUModel
))) {
857 error_setg(errp
, "Mixed CPU models are not supported on s390x.");
863 kvm_s390_apply_cpu_model(model
, errp
);
869 applied_model
= *model
;
875 void s390_realize_cpu_model(CPUState
*cs
, Error
**errp
)
877 S390CPUClass
*xcc
= S390_CPU_GET_CLASS(cs
);
878 S390CPU
*cpu
= S390_CPU(cs
);
879 const S390CPUModel
*max_model
;
881 if (xcc
->kvm_required
&& !kvm_enabled()) {
882 error_setg(errp
, "CPU definition requires KVM");
887 /* no host model support -> perform compatibility stuff */
888 apply_cpu_model(NULL
, errp
);
892 max_model
= get_max_cpu_model(errp
);
894 error_prepend(errp
, "CPU models are not available: ");
898 /* copy over properties that can vary */
899 cpu
->model
->lowest_ibc
= max_model
->lowest_ibc
;
900 cpu
->model
->cpu_id
= max_model
->cpu_id
;
901 cpu
->model
->cpu_id_format
= max_model
->cpu_id_format
;
902 cpu
->model
->cpu_ver
= max_model
->cpu_ver
;
904 check_consistency(cpu
->model
);
905 check_compatibility(max_model
, cpu
->model
, errp
);
910 apply_cpu_model(cpu
->model
, errp
);
912 cpu
->env
.cpuid
= s390_cpuid_from_cpu_model(cpu
->model
);
914 /* basic mode, write the cpu address into the first 4 bit of the ID */
915 cpu
->env
.cpuid
= deposit64(cpu
->env
.cpuid
, 54, 4, cpu
->env
.cpu_num
);
919 static void get_feature(Object
*obj
, Visitor
*v
, const char *name
,
920 void *opaque
, Error
**errp
)
922 S390Feat feat
= (S390Feat
) opaque
;
923 S390CPU
*cpu
= S390_CPU(obj
);
927 error_setg(errp
, "Details about the host CPU model are not available, "
928 "features cannot be queried.");
932 value
= test_bit(feat
, cpu
->model
->features
);
933 visit_type_bool(v
, name
, &value
, errp
);
936 static void set_feature(Object
*obj
, Visitor
*v
, const char *name
,
937 void *opaque
, Error
**errp
)
939 S390Feat feat
= (S390Feat
) opaque
;
940 DeviceState
*dev
= DEVICE(obj
);
941 S390CPU
*cpu
= S390_CPU(obj
);
945 error_setg(errp
, "Attempt to set property '%s' on '%s' after "
946 "it was realized", name
, object_get_typename(obj
));
948 } else if (!cpu
->model
) {
949 error_setg(errp
, "Details about the host CPU model are not available, "
950 "features cannot be changed.");
954 visit_type_bool(v
, name
, &value
, errp
);
959 if (!test_bit(feat
, cpu
->model
->def
->full_feat
)) {
960 error_setg(errp
, "Feature '%s' is not available for CPU model '%s',"
961 " it was introduced with later models.",
962 name
, cpu
->model
->def
->name
);
965 set_bit(feat
, cpu
->model
->features
);
967 clear_bit(feat
, cpu
->model
->features
);
971 static void get_feature_group(Object
*obj
, Visitor
*v
, const char *name
,
972 void *opaque
, Error
**errp
)
974 S390FeatGroup group
= (S390FeatGroup
) opaque
;
975 const S390FeatGroupDef
*def
= s390_feat_group_def(group
);
976 S390CPU
*cpu
= S390_CPU(obj
);
981 error_setg(errp
, "Details about the host CPU model are not available, "
982 "features cannot be queried.");
986 /* a group is enabled if all features are enabled */
987 bitmap_and(tmp
, cpu
->model
->features
, def
->feat
, S390_FEAT_MAX
);
988 value
= bitmap_equal(tmp
, def
->feat
, S390_FEAT_MAX
);
989 visit_type_bool(v
, name
, &value
, errp
);
992 static void set_feature_group(Object
*obj
, Visitor
*v
, const char *name
,
993 void *opaque
, Error
**errp
)
995 S390FeatGroup group
= (S390FeatGroup
) opaque
;
996 const S390FeatGroupDef
*def
= s390_feat_group_def(group
);
997 DeviceState
*dev
= DEVICE(obj
);
998 S390CPU
*cpu
= S390_CPU(obj
);
1001 if (dev
->realized
) {
1002 error_setg(errp
, "Attempt to set property '%s' on '%s' after "
1003 "it was realized", name
, object_get_typename(obj
));
1005 } else if (!cpu
->model
) {
1006 error_setg(errp
, "Details about the host CPU model are not available, "
1007 "features cannot be changed.");
1011 visit_type_bool(v
, name
, &value
, errp
);
1016 /* groups are added in one shot, so an intersect is sufficient */
1017 if (!bitmap_intersects(def
->feat
, cpu
->model
->def
->full_feat
,
1019 error_setg(errp
, "Group '%s' is not available for CPU model '%s',"
1020 " it was introduced with later models.",
1021 name
, cpu
->model
->def
->name
);
1024 bitmap_or(cpu
->model
->features
, cpu
->model
->features
, def
->feat
,
1027 bitmap_andnot(cpu
->model
->features
, cpu
->model
->features
, def
->feat
,
1032 void s390_cpu_model_register_props(Object
*obj
)
1034 S390FeatGroup group
;
1037 for (feat
= 0; feat
< S390_FEAT_MAX
; feat
++) {
1038 const S390FeatDef
*def
= s390_feat_def(feat
);
1039 object_property_add(obj
, def
->name
, "bool", get_feature
,
1040 set_feature
, NULL
, (void *) feat
, NULL
);
1041 object_property_set_description(obj
, def
->name
, def
->desc
, NULL
);
1043 for (group
= 0; group
< S390_FEAT_GROUP_MAX
; group
++) {
1044 const S390FeatGroupDef
*def
= s390_feat_group_def(group
);
1045 object_property_add(obj
, def
->name
, "bool", get_feature_group
,
1046 set_feature_group
, NULL
, (void *) group
, NULL
);
1047 object_property_set_description(obj
, def
->name
, def
->desc
, NULL
);
1051 static void s390_cpu_model_initfn(Object
*obj
)
1053 S390CPU
*cpu
= S390_CPU(obj
);
1054 S390CPUClass
*xcc
= S390_CPU_GET_CLASS(cpu
);
1056 cpu
->model
= g_malloc0(sizeof(*cpu
->model
));
1057 /* copy the model, so we can modify it */
1058 cpu
->model
->def
= xcc
->cpu_def
;
1059 if (xcc
->is_static
) {
1060 /* base model - features will never change */
1061 bitmap_copy(cpu
->model
->features
, cpu
->model
->def
->base_feat
,
1064 /* latest model - features can change */
1065 bitmap_copy(cpu
->model
->features
,
1066 cpu
->model
->def
->default_feat
, S390_FEAT_MAX
);
1071 static void s390_host_cpu_model_initfn(Object
*obj
)
1073 S390CPU
*cpu
= S390_CPU(obj
);
1076 if (!kvm_enabled() || !kvm_s390_cpu_models_supported()) {
1080 cpu
->model
= g_malloc0(sizeof(*cpu
->model
));
1081 kvm_s390_get_host_cpu_model(cpu
->model
, &err
);
1083 error_report_err(err
);
1085 /* fallback to unsupported cpu models */
1091 static void s390_qemu_cpu_model_initfn(Object
*obj
)
1093 static S390CPUDef s390_qemu_cpu_defs
;
1094 S390CPU
*cpu
= S390_CPU(obj
);
1096 cpu
->model
= g_malloc0(sizeof(*cpu
->model
));
1097 /* TCG emulates a z900 (with some optional additional features) */
1098 memcpy(&s390_qemu_cpu_defs
, &s390_cpu_defs
[0], sizeof(s390_qemu_cpu_defs
));
1099 add_qemu_cpu_model_features(s390_qemu_cpu_defs
.full_feat
);
1100 cpu
->model
->def
= &s390_qemu_cpu_defs
;
1101 bitmap_copy(cpu
->model
->features
, cpu
->model
->def
->default_feat
,
1105 static void s390_cpu_model_finalize(Object
*obj
)
1107 S390CPU
*cpu
= S390_CPU(obj
);
1113 static bool get_is_migration_safe(Object
*obj
, Error
**errp
)
1115 return S390_CPU_GET_CLASS(obj
)->is_migration_safe
;
1118 static bool get_is_static(Object
*obj
, Error
**errp
)
1120 return S390_CPU_GET_CLASS(obj
)->is_static
;
1123 static char *get_description(Object
*obj
, Error
**errp
)
1125 return g_strdup(S390_CPU_GET_CLASS(obj
)->desc
);
1128 void s390_cpu_model_class_register_props(ObjectClass
*oc
)
1130 object_class_property_add_bool(oc
, "migration-safe", get_is_migration_safe
,
1132 object_class_property_add_bool(oc
, "static", get_is_static
,
1134 object_class_property_add_str(oc
, "description", get_description
, NULL
,
1139 static void s390_host_cpu_model_class_init(ObjectClass
*oc
, void *data
)
1141 S390CPUClass
*xcc
= S390_CPU_CLASS(oc
);
1143 xcc
->kvm_required
= true;
1144 xcc
->desc
= "KVM only: All recognized features";
1148 static void s390_base_cpu_model_class_init(ObjectClass
*oc
, void *data
)
1150 S390CPUClass
*xcc
= S390_CPU_CLASS(oc
);
1152 /* all base models are migration safe */
1153 xcc
->cpu_def
= (const S390CPUDef
*) data
;
1154 xcc
->is_migration_safe
= true;
1155 xcc
->is_static
= true;
1156 xcc
->desc
= xcc
->cpu_def
->desc
;
1159 static void s390_cpu_model_class_init(ObjectClass
*oc
, void *data
)
1161 S390CPUClass
*xcc
= S390_CPU_CLASS(oc
);
1163 /* model that can change between QEMU versions */
1164 xcc
->cpu_def
= (const S390CPUDef
*) data
;
1165 xcc
->is_migration_safe
= true;
1166 xcc
->desc
= xcc
->cpu_def
->desc
;
1169 static void s390_qemu_cpu_model_class_init(ObjectClass
*oc
, void *data
)
1171 S390CPUClass
*xcc
= S390_CPU_CLASS(oc
);
1173 xcc
->is_migration_safe
= true;
1174 xcc
->desc
= g_strdup_printf("QEMU Virtual CPU version %s",
1178 #define S390_CPU_TYPE_SUFFIX "-" TYPE_S390_CPU
1179 #define S390_CPU_TYPE_NAME(name) (name S390_CPU_TYPE_SUFFIX)
1181 /* Generate type name for a cpu model. Caller has to free the string. */
1182 static char *s390_cpu_type_name(const char *model_name
)
1184 return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name
);
1187 /* Generate type name for a base cpu model. Caller has to free the string. */
1188 static char *s390_base_cpu_type_name(const char *model_name
)
1190 return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name
);
1193 ObjectClass
*s390_cpu_class_by_name(const char *name
)
1195 char *typename
= s390_cpu_type_name(name
);
1198 oc
= object_class_by_name(typename
);
1203 static const TypeInfo qemu_s390_cpu_type_info
= {
1204 .name
= S390_CPU_TYPE_NAME("qemu"),
1205 .parent
= TYPE_S390_CPU
,
1206 .instance_init
= s390_qemu_cpu_model_initfn
,
1207 .instance_finalize
= s390_cpu_model_finalize
,
1208 .class_init
= s390_qemu_cpu_model_class_init
,
1212 static const TypeInfo host_s390_cpu_type_info
= {
1213 .name
= S390_CPU_TYPE_NAME("host"),
1214 .parent
= TYPE_S390_CPU
,
1215 .instance_init
= s390_host_cpu_model_initfn
,
1216 .instance_finalize
= s390_cpu_model_finalize
,
1217 .class_init
= s390_host_cpu_model_class_init
,
1221 static void init_ignored_base_feat(void)
1223 static const int feats
[] = {
1224 /* MSA subfunctions that could not be available on certain machines */
1226 S390_FEAT_KMAC_TDEA_128
,
1227 S390_FEAT_KMAC_TDEA_192
,
1229 S390_FEAT_KMC_TDEA_128
,
1230 S390_FEAT_KMC_TDEA_192
,
1232 S390_FEAT_KM_TDEA_128
,
1233 S390_FEAT_KM_TDEA_192
,
1234 S390_FEAT_KIMD_SHA_1
,
1235 S390_FEAT_KLMD_SHA_1
,
1239 for (i
= 0; i
< ARRAY_SIZE(feats
); i
++) {
1240 set_bit(feats
[i
], ignored_base_feat
);
1244 static void register_types(void)
1248 init_ignored_base_feat();
1250 /* init all bitmaps from gnerated data initially */
1251 for (i
= 0; i
< ARRAY_SIZE(s390_cpu_defs
); i
++) {
1252 s390_init_feat_bitmap(s390_cpu_defs
[i
].base_init
,
1253 s390_cpu_defs
[i
].base_feat
);
1254 s390_init_feat_bitmap(s390_cpu_defs
[i
].default_init
,
1255 s390_cpu_defs
[i
].default_feat
);
1256 s390_init_feat_bitmap(s390_cpu_defs
[i
].full_init
,
1257 s390_cpu_defs
[i
].full_feat
);
1260 for (i
= 0; i
< ARRAY_SIZE(s390_cpu_defs
); i
++) {
1261 char *base_name
= s390_base_cpu_type_name(s390_cpu_defs
[i
].name
);
1262 TypeInfo ti_base
= {
1264 .parent
= TYPE_S390_CPU
,
1265 .instance_init
= s390_cpu_model_initfn
,
1266 .instance_finalize
= s390_cpu_model_finalize
,
1267 .class_init
= s390_base_cpu_model_class_init
,
1268 .class_data
= (void *) &s390_cpu_defs
[i
],
1270 char *name
= s390_cpu_type_name(s390_cpu_defs
[i
].name
);
1273 .parent
= TYPE_S390_CPU
,
1274 .instance_init
= s390_cpu_model_initfn
,
1275 .instance_finalize
= s390_cpu_model_finalize
,
1276 .class_init
= s390_cpu_model_class_init
,
1277 .class_data
= (void *) &s390_cpu_defs
[i
],
1280 type_register_static(&ti_base
);
1281 type_register_static(&ti
);
1286 type_register_static(&qemu_s390_cpu_type_info
);
1288 type_register_static(&host_s390_cpu_type_info
);
1292 type_init(register_types
)