Merge tag 'ide-pull-request' of https://gitlab.com/jsnow/qemu into staging
[qemu.git] / target / s390x / cpu_models.c
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 "internal.h"
16 #include "kvm_s390x.h"
17 #include "sysemu/kvm.h"
18 #include "sysemu/tcg.h"
19 #include "qapi/error.h"
20 #include "qapi/visitor.h"
21 #include "qemu/error-report.h"
22 #include "qemu/module.h"
23 #include "qemu/qemu-print.h"
24 #include "qapi/qmp/qerror.h"
25 #include "qapi/qobject-input-visitor.h"
26 #include "qapi/qmp/qdict.h"
27 #ifndef CONFIG_USER_ONLY
28 #include "sysemu/arch_init.h"
29 #include "sysemu/sysemu.h"
30 #include "hw/pci/pci.h"
31 #endif
32 #include "qapi/qapi-commands-machine-target.h"
33 #include "hw/s390x/pv.h"
34
35 #define CPUDEF_INIT(_type, _gen, _ec_ga, _mha_pow, _hmfai, _name, _desc) \
36 { \
37 .name = _name, \
38 .type = _type, \
39 .gen = _gen, \
40 .ec_ga = _ec_ga, \
41 .mha_pow = _mha_pow, \
42 .hmfai = _hmfai, \
43 .desc = _desc, \
44 .base_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _BASE }, \
45 .default_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _DEFAULT }, \
46 .full_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _FULL }, \
47 }
48
49 /*
50 * CPU definition list in order of release. Up to generation 14 base features
51 * of a following release have been a superset of the previous release. With
52 * generation 15 one base feature and one optional feature have been deprecated.
53 */
54 static S390CPUDef s390_cpu_defs[] = {
55 CPUDEF_INIT(0x2064, 7, 1, 38, 0x00000000U, "z900", "IBM zSeries 900 GA1"),
56 CPUDEF_INIT(0x2064, 7, 2, 38, 0x00000000U, "z900.2", "IBM zSeries 900 GA2"),
57 CPUDEF_INIT(0x2064, 7, 3, 38, 0x00000000U, "z900.3", "IBM zSeries 900 GA3"),
58 CPUDEF_INIT(0x2066, 7, 3, 38, 0x00000000U, "z800", "IBM zSeries 800 GA1"),
59 CPUDEF_INIT(0x2084, 8, 1, 38, 0x00000000U, "z990", "IBM zSeries 990 GA1"),
60 CPUDEF_INIT(0x2084, 8, 2, 38, 0x00000000U, "z990.2", "IBM zSeries 990 GA2"),
61 CPUDEF_INIT(0x2084, 8, 3, 38, 0x00000000U, "z990.3", "IBM zSeries 990 GA3"),
62 CPUDEF_INIT(0x2086, 8, 3, 38, 0x00000000U, "z890", "IBM zSeries 880 GA1"),
63 CPUDEF_INIT(0x2084, 8, 4, 38, 0x00000000U, "z990.4", "IBM zSeries 990 GA4"),
64 CPUDEF_INIT(0x2086, 8, 4, 38, 0x00000000U, "z890.2", "IBM zSeries 880 GA2"),
65 CPUDEF_INIT(0x2084, 8, 5, 38, 0x00000000U, "z990.5", "IBM zSeries 990 GA5"),
66 CPUDEF_INIT(0x2086, 8, 5, 38, 0x00000000U, "z890.3", "IBM zSeries 880 GA3"),
67 CPUDEF_INIT(0x2094, 9, 1, 40, 0x00000000U, "z9EC", "IBM System z9 EC GA1"),
68 CPUDEF_INIT(0x2094, 9, 2, 40, 0x00000000U, "z9EC.2", "IBM System z9 EC GA2"),
69 CPUDEF_INIT(0x2096, 9, 2, 40, 0x00000000U, "z9BC", "IBM System z9 BC GA1"),
70 CPUDEF_INIT(0x2094, 9, 3, 40, 0x00000000U, "z9EC.3", "IBM System z9 EC GA3"),
71 CPUDEF_INIT(0x2096, 9, 3, 40, 0x00000000U, "z9BC.2", "IBM System z9 BC GA2"),
72 CPUDEF_INIT(0x2097, 10, 1, 43, 0x00000000U, "z10EC", "IBM System z10 EC GA1"),
73 CPUDEF_INIT(0x2097, 10, 2, 43, 0x00000000U, "z10EC.2", "IBM System z10 EC GA2"),
74 CPUDEF_INIT(0x2098, 10, 2, 43, 0x00000000U, "z10BC", "IBM System z10 BC GA1"),
75 CPUDEF_INIT(0x2097, 10, 3, 43, 0x00000000U, "z10EC.3", "IBM System z10 EC GA3"),
76 CPUDEF_INIT(0x2098, 10, 3, 43, 0x00000000U, "z10BC.2", "IBM System z10 BC GA2"),
77 CPUDEF_INIT(0x2817, 11, 1, 44, 0x08000000U, "z196", "IBM zEnterprise 196 GA1"),
78 CPUDEF_INIT(0x2817, 11, 2, 44, 0x08000000U, "z196.2", "IBM zEnterprise 196 GA2"),
79 CPUDEF_INIT(0x2818, 11, 2, 44, 0x08000000U, "z114", "IBM zEnterprise 114 GA1"),
80 CPUDEF_INIT(0x2827, 12, 1, 44, 0x08000000U, "zEC12", "IBM zEnterprise EC12 GA1"),
81 CPUDEF_INIT(0x2827, 12, 2, 44, 0x08000000U, "zEC12.2", "IBM zEnterprise EC12 GA2"),
82 CPUDEF_INIT(0x2828, 12, 2, 44, 0x08000000U, "zBC12", "IBM zEnterprise BC12 GA1"),
83 CPUDEF_INIT(0x2964, 13, 1, 47, 0x08000000U, "z13", "IBM z13 GA1"),
84 CPUDEF_INIT(0x2964, 13, 2, 47, 0x08000000U, "z13.2", "IBM z13 GA2"),
85 CPUDEF_INIT(0x2965, 13, 2, 47, 0x08000000U, "z13s", "IBM z13s GA1"),
86 CPUDEF_INIT(0x3906, 14, 1, 47, 0x08000000U, "z14", "IBM z14 GA1"),
87 CPUDEF_INIT(0x3906, 14, 2, 47, 0x08000000U, "z14.2", "IBM z14 GA2"),
88 CPUDEF_INIT(0x3907, 14, 1, 47, 0x08000000U, "z14ZR1", "IBM z14 Model ZR1 GA1"),
89 CPUDEF_INIT(0x8561, 15, 1, 47, 0x08000000U, "gen15a", "IBM z15 T01 GA1"),
90 CPUDEF_INIT(0x8562, 15, 1, 47, 0x08000000U, "gen15b", "IBM z15 T02 GA1"),
91 };
92
93 #define QEMU_MAX_CPU_TYPE 0x2964
94 #define QEMU_MAX_CPU_GEN 13
95 #define QEMU_MAX_CPU_EC_GA 2
96 static const S390FeatInit qemu_max_cpu_feat_init = { S390_FEAT_LIST_QEMU_MAX };
97 static S390FeatBitmap qemu_max_cpu_feat;
98
99 /* features part of a base model but not relevant for finding a base model */
100 S390FeatBitmap ignored_base_feat;
101
102 void s390_cpudef_featoff(uint8_t gen, uint8_t ec_ga, S390Feat feat)
103 {
104 const S390CPUDef *def;
105
106 def = s390_find_cpu_def(0, gen, ec_ga, NULL);
107 clear_bit(feat, (unsigned long *)&def->default_feat);
108 }
109
110 void s390_cpudef_featoff_greater(uint8_t gen, uint8_t ec_ga, S390Feat feat)
111 {
112 int i;
113
114 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
115 const S390CPUDef *def = &s390_cpu_defs[i];
116
117 if (def->gen < gen) {
118 continue;
119 }
120 if (def->gen == gen && def->ec_ga < ec_ga) {
121 continue;
122 }
123
124 clear_bit(feat, (unsigned long *)&def->default_feat);
125 }
126 }
127
128 void s390_cpudef_group_featoff_greater(uint8_t gen, uint8_t ec_ga,
129 S390FeatGroup group)
130 {
131 const S390FeatGroupDef *group_def = s390_feat_group_def(group);
132 S390FeatBitmap group_def_off;
133 int i;
134
135 bitmap_complement(group_def_off, group_def->feat, S390_FEAT_MAX);
136
137 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
138 const S390CPUDef *cpu_def = &s390_cpu_defs[i];
139
140 if (cpu_def->gen < gen) {
141 continue;
142 }
143 if (cpu_def->gen == gen && cpu_def->ec_ga < ec_ga) {
144 continue;
145 }
146
147 bitmap_and((unsigned long *)&cpu_def->default_feat,
148 cpu_def->default_feat, group_def_off, S390_FEAT_MAX);
149 }
150 }
151
152 uint32_t s390_get_hmfai(void)
153 {
154 static S390CPU *cpu;
155
156 if (!cpu) {
157 cpu = S390_CPU(qemu_get_cpu(0));
158 }
159
160 if (!cpu || !cpu->model) {
161 return 0;
162 }
163 return cpu->model->def->hmfai;
164 }
165
166 uint8_t s390_get_mha_pow(void)
167 {
168 static S390CPU *cpu;
169
170 if (!cpu) {
171 cpu = S390_CPU(qemu_get_cpu(0));
172 }
173
174 if (!cpu || !cpu->model) {
175 return 0;
176 }
177 return cpu->model->def->mha_pow;
178 }
179
180 uint32_t s390_get_ibc_val(void)
181 {
182 uint16_t unblocked_ibc, lowest_ibc;
183 static S390CPU *cpu;
184
185 if (!cpu) {
186 cpu = S390_CPU(qemu_get_cpu(0));
187 }
188
189 if (!cpu || !cpu->model) {
190 return 0;
191 }
192 unblocked_ibc = s390_ibc_from_cpu_model(cpu->model);
193 lowest_ibc = cpu->model->lowest_ibc;
194 /* the lowest_ibc always has to be <= unblocked_ibc */
195 if (!lowest_ibc || lowest_ibc > unblocked_ibc) {
196 return 0;
197 }
198 return ((uint32_t) lowest_ibc << 16) | unblocked_ibc;
199 }
200
201 void s390_get_feat_block(S390FeatType type, uint8_t *data)
202 {
203 static S390CPU *cpu;
204
205 if (!cpu) {
206 cpu = S390_CPU(qemu_get_cpu(0));
207 }
208
209 if (!cpu || !cpu->model) {
210 return;
211 }
212 s390_fill_feat_block(cpu->model->features, type, data);
213 }
214
215 bool s390_has_feat(S390Feat feat)
216 {
217 static S390CPU *cpu;
218
219 if (!cpu) {
220 cpu = S390_CPU(qemu_get_cpu(0));
221 }
222
223 if (!cpu || !cpu->model) {
224 #ifdef CONFIG_KVM
225 if (kvm_enabled()) {
226 if (feat == S390_FEAT_VECTOR) {
227 return kvm_check_extension(kvm_state,
228 KVM_CAP_S390_VECTOR_REGISTERS);
229 }
230 if (feat == S390_FEAT_RUNTIME_INSTRUMENTATION) {
231 return kvm_s390_get_ri();
232 }
233 if (feat == S390_FEAT_MSA_EXT_3) {
234 return true;
235 }
236 }
237 #endif
238 if (feat == S390_FEAT_ZPCI) {
239 return true;
240 }
241 return 0;
242 }
243
244 if (s390_is_pv()) {
245 switch (feat) {
246 case S390_FEAT_DIAG_318:
247 case S390_FEAT_HPMA2:
248 case S390_FEAT_SIE_F2:
249 case S390_FEAT_SIE_SKEY:
250 case S390_FEAT_SIE_GPERE:
251 case S390_FEAT_SIE_SIIF:
252 case S390_FEAT_SIE_SIGPIF:
253 case S390_FEAT_SIE_IB:
254 case S390_FEAT_SIE_CEI:
255 case S390_FEAT_SIE_KSS:
256 case S390_FEAT_SIE_GSLS:
257 case S390_FEAT_SIE_64BSCAO:
258 case S390_FEAT_SIE_CMMA:
259 case S390_FEAT_SIE_PFMFI:
260 case S390_FEAT_SIE_IBS:
261 return false;
262 break;
263 default:
264 break;
265 }
266 }
267 return test_bit(feat, cpu->model->features);
268 }
269
270 uint8_t s390_get_gen_for_cpu_type(uint16_t type)
271 {
272 int i;
273
274 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
275 if (s390_cpu_defs[i].type == type) {
276 return s390_cpu_defs[i].gen;
277 }
278 }
279 return 0;
280 }
281
282 const S390CPUDef *s390_find_cpu_def(uint16_t type, uint8_t gen, uint8_t ec_ga,
283 S390FeatBitmap features)
284 {
285 const S390CPUDef *last_compatible = NULL;
286 const S390CPUDef *matching_cpu_type = NULL;
287 int i;
288
289 if (!gen) {
290 ec_ga = 0;
291 }
292 if (!gen && type) {
293 gen = s390_get_gen_for_cpu_type(type);
294 }
295
296 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
297 const S390CPUDef *def = &s390_cpu_defs[i];
298 S390FeatBitmap missing;
299
300 /* don't even try newer generations if we know the generation */
301 if (gen) {
302 if (def->gen > gen) {
303 break;
304 } else if (def->gen == gen && ec_ga && def->ec_ga > ec_ga) {
305 break;
306 }
307 }
308
309 if (features) {
310 /* see if the model satisfies the minimum features */
311 bitmap_andnot(missing, def->base_feat, features, S390_FEAT_MAX);
312 /*
313 * Ignore certain features that are in the base model, but not
314 * relevant for the search (esp. MSA subfunctions).
315 */
316 bitmap_andnot(missing, missing, ignored_base_feat, S390_FEAT_MAX);
317 if (!bitmap_empty(missing, S390_FEAT_MAX)) {
318 break;
319 }
320 }
321
322 /* stop the search if we found the exact model */
323 if (def->type == type && def->ec_ga == ec_ga) {
324 return def;
325 }
326 /* remember if we've at least seen one with the same cpu type */
327 if (def->type == type) {
328 matching_cpu_type = def;
329 }
330 last_compatible = def;
331 }
332 /* prefer the model with the same cpu type, esp. don't take the BC for EC */
333 if (matching_cpu_type) {
334 return matching_cpu_type;
335 }
336 return last_compatible;
337 }
338
339 static void s390_print_cpu_model_list_entry(gpointer data, gpointer user_data)
340 {
341 const S390CPUClass *scc = S390_CPU_CLASS((ObjectClass *)data);
342 char *name = g_strdup(object_class_get_name((ObjectClass *)data));
343 const char *details = "";
344
345 if (scc->is_static) {
346 details = "(static, migration-safe)";
347 } else if (scc->is_migration_safe) {
348 details = "(migration-safe)";
349 }
350
351 /* strip off the -s390x-cpu */
352 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0;
353 qemu_printf("s390 %-15s %-35s %s\n", name, scc->desc, details);
354 g_free(name);
355 }
356
357 static gint s390_cpu_list_compare(gconstpointer a, gconstpointer b)
358 {
359 const S390CPUClass *cc_a = S390_CPU_CLASS((ObjectClass *)a);
360 const S390CPUClass *cc_b = S390_CPU_CLASS((ObjectClass *)b);
361 const char *name_a = object_class_get_name((ObjectClass *)a);
362 const char *name_b = object_class_get_name((ObjectClass *)b);
363
364 /*
365 * Move qemu, host and max to the top of the list, qemu first, host second,
366 * max third.
367 */
368 if (name_a[0] == 'q') {
369 return -1;
370 } else if (name_b[0] == 'q') {
371 return 1;
372 } else if (name_a[0] == 'h') {
373 return -1;
374 } else if (name_b[0] == 'h') {
375 return 1;
376 } else if (name_a[0] == 'm') {
377 return -1;
378 } else if (name_b[0] == 'm') {
379 return 1;
380 }
381
382 /* keep the same order we have in our table (sorted by release date) */
383 if (cc_a->cpu_def != cc_b->cpu_def) {
384 return cc_a->cpu_def - cc_b->cpu_def;
385 }
386
387 /* exact same definition - list base model first */
388 return cc_a->is_static ? -1 : 1;
389 }
390
391 void s390_cpu_list(void)
392 {
393 S390FeatGroup group;
394 S390Feat feat;
395 GSList *list;
396
397 list = object_class_get_list(TYPE_S390_CPU, false);
398 list = g_slist_sort(list, s390_cpu_list_compare);
399 g_slist_foreach(list, s390_print_cpu_model_list_entry, NULL);
400 g_slist_free(list);
401
402 qemu_printf("\nRecognized feature flags:\n");
403 for (feat = 0; feat < S390_FEAT_MAX; feat++) {
404 const S390FeatDef *def = s390_feat_def(feat);
405
406 qemu_printf("%-20s %-50s\n", def->name, def->desc);
407 }
408
409 qemu_printf("\nRecognized feature groups:\n");
410 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) {
411 const S390FeatGroupDef *def = s390_feat_group_def(group);
412
413 qemu_printf("%-20s %-50s\n", def->name, def->desc);
414 }
415 }
416
417 static S390CPUModel *get_max_cpu_model(Error **errp);
418
419 #ifndef CONFIG_USER_ONLY
420 static void list_add_feat(const char *name, void *opaque);
421
422 static void check_unavailable_features(const S390CPUModel *max_model,
423 const S390CPUModel *model,
424 strList **unavailable)
425 {
426 S390FeatBitmap missing;
427
428 /* check general model compatibility */
429 if (max_model->def->gen < model->def->gen ||
430 (max_model->def->gen == model->def->gen &&
431 max_model->def->ec_ga < model->def->ec_ga)) {
432 list_add_feat("type", unavailable);
433 }
434
435 /* detect missing features if any to properly report them */
436 bitmap_andnot(missing, model->features, max_model->features,
437 S390_FEAT_MAX);
438 if (!bitmap_empty(missing, S390_FEAT_MAX)) {
439 s390_feat_bitmap_to_ascii(missing, unavailable, list_add_feat);
440 }
441 }
442
443 struct CpuDefinitionInfoListData {
444 CpuDefinitionInfoList *list;
445 S390CPUModel *model;
446 };
447
448 static void create_cpu_model_list(ObjectClass *klass, void *opaque)
449 {
450 struct CpuDefinitionInfoListData *cpu_list_data = opaque;
451 CpuDefinitionInfoList **cpu_list = &cpu_list_data->list;
452 CpuDefinitionInfo *info;
453 char *name = g_strdup(object_class_get_name(klass));
454 S390CPUClass *scc = S390_CPU_CLASS(klass);
455
456 /* strip off the -s390x-cpu */
457 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0;
458 info = g_new0(CpuDefinitionInfo, 1);
459 info->name = name;
460 info->has_migration_safe = true;
461 info->migration_safe = scc->is_migration_safe;
462 info->q_static = scc->is_static;
463 info->q_typename = g_strdup(object_class_get_name(klass));
464 /* check for unavailable features */
465 if (cpu_list_data->model) {
466 Object *obj;
467 S390CPU *sc;
468 obj = object_new_with_class(klass);
469 sc = S390_CPU(obj);
470 if (sc->model) {
471 info->has_unavailable_features = true;
472 check_unavailable_features(cpu_list_data->model, sc->model,
473 &info->unavailable_features);
474 }
475 object_unref(obj);
476 }
477
478 QAPI_LIST_PREPEND(*cpu_list, info);
479 }
480
481 CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp)
482 {
483 struct CpuDefinitionInfoListData list_data = {
484 .list = NULL,
485 };
486
487 list_data.model = get_max_cpu_model(NULL);
488
489 object_class_foreach(create_cpu_model_list, TYPE_S390_CPU, false,
490 &list_data);
491
492 return list_data.list;
493 }
494
495 static void cpu_model_from_info(S390CPUModel *model, const CpuModelInfo *info,
496 Error **errp)
497 {
498 Error *err = NULL;
499 const QDict *qdict = NULL;
500 const QDictEntry *e;
501 Visitor *visitor;
502 ObjectClass *oc;
503 S390CPU *cpu;
504 Object *obj;
505
506 if (info->props) {
507 qdict = qobject_to(QDict, info->props);
508 if (!qdict) {
509 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict");
510 return;
511 }
512 }
513
514 oc = cpu_class_by_name(TYPE_S390_CPU, info->name);
515 if (!oc) {
516 error_setg(errp, "The CPU definition \'%s\' is unknown.", info->name);
517 return;
518 }
519 if (S390_CPU_CLASS(oc)->kvm_required && !kvm_enabled()) {
520 error_setg(errp, "The CPU definition '%s' requires KVM", info->name);
521 return;
522 }
523 obj = object_new_with_class(oc);
524 cpu = S390_CPU(obj);
525
526 if (!cpu->model) {
527 error_setg(errp, "Details about the host CPU model are not available, "
528 "it cannot be used.");
529 object_unref(obj);
530 return;
531 }
532
533 if (qdict) {
534 visitor = qobject_input_visitor_new(info->props);
535 if (!visit_start_struct(visitor, NULL, NULL, 0, errp)) {
536 visit_free(visitor);
537 object_unref(obj);
538 return;
539 }
540 for (e = qdict_first(qdict); e; e = qdict_next(qdict, e)) {
541 if (!object_property_set(obj, e->key, visitor, &err)) {
542 break;
543 }
544 }
545 if (!err) {
546 visit_check_struct(visitor, &err);
547 }
548 visit_end_struct(visitor, NULL);
549 visit_free(visitor);
550 if (err) {
551 error_propagate(errp, err);
552 object_unref(obj);
553 return;
554 }
555 }
556
557 /* copy the model and throw the cpu away */
558 memcpy(model, cpu->model, sizeof(*model));
559 object_unref(obj);
560 }
561
562 static void qdict_add_disabled_feat(const char *name, void *opaque)
563 {
564 qdict_put_bool(opaque, name, false);
565 }
566
567 static void qdict_add_enabled_feat(const char *name, void *opaque)
568 {
569 qdict_put_bool(opaque, name, true);
570 }
571
572 /* convert S390CPUDef into a static CpuModelInfo */
573 static void cpu_info_from_model(CpuModelInfo *info, const S390CPUModel *model,
574 bool delta_changes)
575 {
576 QDict *qdict = qdict_new();
577 S390FeatBitmap bitmap;
578
579 /* always fallback to the static base model */
580 info->name = g_strdup_printf("%s-base", model->def->name);
581
582 if (delta_changes) {
583 /* features deleted from the base feature set */
584 bitmap_andnot(bitmap, model->def->base_feat, model->features,
585 S390_FEAT_MAX);
586 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) {
587 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat);
588 }
589
590 /* features added to the base feature set */
591 bitmap_andnot(bitmap, model->features, model->def->base_feat,
592 S390_FEAT_MAX);
593 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) {
594 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_enabled_feat);
595 }
596 } else {
597 /* expand all features */
598 s390_feat_bitmap_to_ascii(model->features, qdict,
599 qdict_add_enabled_feat);
600 bitmap_complement(bitmap, model->features, S390_FEAT_MAX);
601 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat);
602 }
603
604 if (!qdict_size(qdict)) {
605 qobject_unref(qdict);
606 } else {
607 info->props = QOBJECT(qdict);
608 info->has_props = true;
609 }
610 }
611
612 CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,
613 CpuModelInfo *model,
614 Error **errp)
615 {
616 Error *err = NULL;
617 CpuModelExpansionInfo *expansion_info = NULL;
618 S390CPUModel s390_model;
619 bool delta_changes = false;
620
621 /* convert it to our internal representation */
622 cpu_model_from_info(&s390_model, model, &err);
623 if (err) {
624 error_propagate(errp, err);
625 return NULL;
626 }
627
628 if (type == CPU_MODEL_EXPANSION_TYPE_STATIC) {
629 delta_changes = true;
630 } else if (type != CPU_MODEL_EXPANSION_TYPE_FULL) {
631 error_setg(errp, "The requested expansion type is not supported.");
632 return NULL;
633 }
634
635 /* convert it back to a static representation */
636 expansion_info = g_new0(CpuModelExpansionInfo, 1);
637 expansion_info->model = g_malloc0(sizeof(*expansion_info->model));
638 cpu_info_from_model(expansion_info->model, &s390_model, delta_changes);
639 return expansion_info;
640 }
641
642 static void list_add_feat(const char *name, void *opaque)
643 {
644 strList **last = (strList **) opaque;
645
646 QAPI_LIST_PREPEND(*last, g_strdup(name));
647 }
648
649 CpuModelCompareInfo *qmp_query_cpu_model_comparison(CpuModelInfo *infoa,
650 CpuModelInfo *infob,
651 Error **errp)
652 {
653 Error *err = NULL;
654 CpuModelCompareResult feat_result, gen_result;
655 CpuModelCompareInfo *compare_info;
656 S390FeatBitmap missing, added;
657 S390CPUModel modela, modelb;
658
659 /* convert both models to our internal representation */
660 cpu_model_from_info(&modela, infoa, &err);
661 if (err) {
662 error_propagate(errp, err);
663 return NULL;
664 }
665 cpu_model_from_info(&modelb, infob, &err);
666 if (err) {
667 error_propagate(errp, err);
668 return NULL;
669 }
670 compare_info = g_new0(CpuModelCompareInfo, 1);
671
672 /* check the cpu generation and ga level */
673 if (modela.def->gen == modelb.def->gen) {
674 if (modela.def->ec_ga == modelb.def->ec_ga) {
675 /* ec and corresponding bc are identical */
676 gen_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL;
677 } else if (modela.def->ec_ga < modelb.def->ec_ga) {
678 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET;
679 } else {
680 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET;
681 }
682 } else if (modela.def->gen < modelb.def->gen) {
683 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET;
684 } else {
685 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET;
686 }
687 if (gen_result != CPU_MODEL_COMPARE_RESULT_IDENTICAL) {
688 /* both models cannot be made identical */
689 list_add_feat("type", &compare_info->responsible_properties);
690 }
691
692 /* check the feature set */
693 if (bitmap_equal(modela.features, modelb.features, S390_FEAT_MAX)) {
694 feat_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL;
695 } else {
696 bitmap_andnot(missing, modela.features, modelb.features, S390_FEAT_MAX);
697 s390_feat_bitmap_to_ascii(missing,
698 &compare_info->responsible_properties,
699 list_add_feat);
700 bitmap_andnot(added, modelb.features, modela.features, S390_FEAT_MAX);
701 s390_feat_bitmap_to_ascii(added, &compare_info->responsible_properties,
702 list_add_feat);
703 if (bitmap_empty(missing, S390_FEAT_MAX)) {
704 feat_result = CPU_MODEL_COMPARE_RESULT_SUBSET;
705 } else if (bitmap_empty(added, S390_FEAT_MAX)) {
706 feat_result = CPU_MODEL_COMPARE_RESULT_SUPERSET;
707 } else {
708 feat_result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE;
709 }
710 }
711
712 /* combine the results */
713 if (gen_result == feat_result) {
714 compare_info->result = gen_result;
715 } else if (feat_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) {
716 compare_info->result = gen_result;
717 } else if (gen_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) {
718 compare_info->result = feat_result;
719 } else {
720 compare_info->result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE;
721 }
722 return compare_info;
723 }
724
725 CpuModelBaselineInfo *qmp_query_cpu_model_baseline(CpuModelInfo *infoa,
726 CpuModelInfo *infob,
727 Error **errp)
728 {
729 Error *err = NULL;
730 CpuModelBaselineInfo *baseline_info;
731 S390CPUModel modela, modelb, model;
732 uint16_t cpu_type;
733 uint8_t max_gen_ga;
734 uint8_t max_gen;
735
736 /* convert both models to our internal representation */
737 cpu_model_from_info(&modela, infoa, &err);
738 if (err) {
739 error_propagate(errp, err);
740 return NULL;
741 }
742
743 cpu_model_from_info(&modelb, infob, &err);
744 if (err) {
745 error_propagate(errp, err);
746 return NULL;
747 }
748
749 /* features both models support */
750 bitmap_and(model.features, modela.features, modelb.features, S390_FEAT_MAX);
751
752 /* detect the maximum model not regarding features */
753 if (modela.def->gen == modelb.def->gen) {
754 if (modela.def->type == modelb.def->type) {
755 cpu_type = modela.def->type;
756 } else {
757 cpu_type = 0;
758 }
759 max_gen = modela.def->gen;
760 max_gen_ga = MIN(modela.def->ec_ga, modelb.def->ec_ga);
761 } else if (modela.def->gen > modelb.def->gen) {
762 cpu_type = modelb.def->type;
763 max_gen = modelb.def->gen;
764 max_gen_ga = modelb.def->ec_ga;
765 } else {
766 cpu_type = modela.def->type;
767 max_gen = modela.def->gen;
768 max_gen_ga = modela.def->ec_ga;
769 }
770
771 model.def = s390_find_cpu_def(cpu_type, max_gen, max_gen_ga,
772 model.features);
773
774 /* models without early base features (esan3) are bad */
775 if (!model.def) {
776 error_setg(errp, "No compatible CPU model could be created as"
777 " important base features are disabled");
778 return NULL;
779 }
780
781 /* strip off features not part of the max model */
782 bitmap_and(model.features, model.features, model.def->full_feat,
783 S390_FEAT_MAX);
784
785 baseline_info = g_new0(CpuModelBaselineInfo, 1);
786 baseline_info->model = g_malloc0(sizeof(*baseline_info->model));
787 cpu_info_from_model(baseline_info->model, &model, true);
788 return baseline_info;
789 }
790 #endif
791
792 static void check_consistency(const S390CPUModel *model)
793 {
794 static int dep[][2] = {
795 { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH },
796 { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH },
797 { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH },
798 { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT },
799 { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH},
800 { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT },
801 { S390_FEAT_DFP_FAST, S390_FEAT_DFP },
802 { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 },
803 { S390_FEAT_EDAT_2, S390_FEAT_EDAT},
804 { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 },
805 { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 },
806 { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 },
807 { S390_FEAT_SIE_CMMA, S390_FEAT_CMM },
808 { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS },
809 { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT },
810 { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 },
811 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_3 },
812 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_4 },
813 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING },
814 { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR },
815 { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR },
816 { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 },
817 { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP },
818 { S390_FEAT_CMM_NT, S390_FEAT_CMM },
819 { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 },
820 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST },
821 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING },
822 { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 },
823 { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA },
824 { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA },
825 { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA },
826 { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA },
827 { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA },
828 { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA },
829 { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA },
830 { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA },
831 { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA },
832 { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA },
833 { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA },
834 { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA },
835 { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 },
836 { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 },
837 { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 },
838 { S390_FEAT_AP_QUERY_CONFIG_INFO, S390_FEAT_AP },
839 { S390_FEAT_AP_FACILITIES_TEST, S390_FEAT_AP },
840 { S390_FEAT_PTFF_QSIE, S390_FEAT_MULTIPLE_EPOCH },
841 { S390_FEAT_PTFF_QTOUE, S390_FEAT_MULTIPLE_EPOCH },
842 { S390_FEAT_PTFF_STOE, S390_FEAT_MULTIPLE_EPOCH },
843 { S390_FEAT_PTFF_STOUE, S390_FEAT_MULTIPLE_EPOCH },
844 { S390_FEAT_AP_QUEUE_INTERRUPT_CONTROL, S390_FEAT_AP },
845 { S390_FEAT_DIAG_318, S390_FEAT_EXTENDED_LENGTH_SCCB },
846 };
847 int i;
848
849 for (i = 0; i < ARRAY_SIZE(dep); i++) {
850 if (test_bit(dep[i][0], model->features) &&
851 !test_bit(dep[i][1], model->features)) {
852 warn_report("\'%s\' requires \'%s\'.",
853 s390_feat_def(dep[i][0])->name,
854 s390_feat_def(dep[i][1])->name);
855 }
856 }
857 }
858
859 static void error_prepend_missing_feat(const char *name, void *opaque)
860 {
861 error_prepend((Error **) opaque, "%s ", name);
862 }
863
864 static void check_compatibility(const S390CPUModel *max_model,
865 const S390CPUModel *model, Error **errp)
866 {
867 S390FeatBitmap missing;
868
869 if (model->def->gen > max_model->def->gen) {
870 error_setg(errp, "Selected CPU generation is too new. Maximum "
871 "supported model in the configuration: \'%s\'",
872 max_model->def->name);
873 return;
874 } else if (model->def->gen == max_model->def->gen &&
875 model->def->ec_ga > max_model->def->ec_ga) {
876 error_setg(errp, "Selected CPU GA level is too new. Maximum "
877 "supported model in the configuration: \'%s\'",
878 max_model->def->name);
879 return;
880 }
881
882 #ifndef CONFIG_USER_ONLY
883 if (only_migratable && test_bit(S390_FEAT_UNPACK, model->features)) {
884 error_setg(errp, "The unpack facility is not compatible with "
885 "the --only-migratable option. You must remove either "
886 "the 'unpack' facility or the --only-migratable option");
887 return;
888 }
889 #endif
890
891 /* detect the missing features to properly report them */
892 bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX);
893 if (bitmap_empty(missing, S390_FEAT_MAX)) {
894 return;
895 }
896
897 error_setg(errp, " ");
898 s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat);
899 error_prepend(errp, "Some features requested in the CPU model are not "
900 "available in the configuration: ");
901 }
902
903 static S390CPUModel *get_max_cpu_model(Error **errp)
904 {
905 Error *err = NULL;
906 static S390CPUModel max_model;
907 static bool cached;
908
909 if (cached) {
910 return &max_model;
911 }
912
913 if (kvm_enabled()) {
914 kvm_s390_get_host_cpu_model(&max_model, &err);
915 } else {
916 max_model.def = s390_find_cpu_def(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN,
917 QEMU_MAX_CPU_EC_GA, NULL);
918 bitmap_copy(max_model.features, qemu_max_cpu_feat, S390_FEAT_MAX);
919 }
920 if (err) {
921 error_propagate(errp, err);
922 return NULL;
923 }
924 cached = true;
925 return &max_model;
926 }
927
928 static inline void apply_cpu_model(const S390CPUModel *model, Error **errp)
929 {
930 #ifndef CONFIG_USER_ONLY
931 Error *err = NULL;
932 static S390CPUModel applied_model;
933 static bool applied;
934
935 /*
936 * We have the same model for all VCPUs. KVM can only be configured before
937 * any VCPUs are defined in KVM.
938 */
939 if (applied) {
940 if (model && memcmp(&applied_model, model, sizeof(S390CPUModel))) {
941 error_setg(errp, "Mixed CPU models are not supported on s390x.");
942 }
943 return;
944 }
945
946 if (kvm_enabled()) {
947 kvm_s390_apply_cpu_model(model, &err);
948 if (err) {
949 error_propagate(errp, err);
950 return;
951 }
952 }
953
954 applied = true;
955 if (model) {
956 applied_model = *model;
957 }
958 #endif
959 }
960
961 void s390_realize_cpu_model(CPUState *cs, Error **errp)
962 {
963 Error *err = NULL;
964 S390CPUClass *xcc = S390_CPU_GET_CLASS(cs);
965 S390CPU *cpu = S390_CPU(cs);
966 const S390CPUModel *max_model;
967
968 if (xcc->kvm_required && !kvm_enabled()) {
969 error_setg(errp, "CPU definition requires KVM");
970 return;
971 }
972
973 if (!cpu->model) {
974 /* no host model support -> perform compatibility stuff */
975 apply_cpu_model(NULL, errp);
976 return;
977 }
978
979 max_model = get_max_cpu_model(errp);
980 if (!max_model) {
981 error_prepend(errp, "CPU models are not available: ");
982 return;
983 }
984
985 /* copy over properties that can vary */
986 cpu->model->lowest_ibc = max_model->lowest_ibc;
987 cpu->model->cpu_id = max_model->cpu_id;
988 cpu->model->cpu_id_format = max_model->cpu_id_format;
989 cpu->model->cpu_ver = max_model->cpu_ver;
990
991 check_consistency(cpu->model);
992 check_compatibility(max_model, cpu->model, &err);
993 if (err) {
994 error_propagate(errp, err);
995 return;
996 }
997
998 apply_cpu_model(cpu->model, errp);
999
1000 #if !defined(CONFIG_USER_ONLY)
1001 cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model);
1002 if (tcg_enabled()) {
1003 /* basic mode, write the cpu address into the first 4 bit of the ID */
1004 cpu->env.cpuid = deposit64(cpu->env.cpuid, 54, 4, cpu->env.core_id);
1005 }
1006 #endif
1007 }
1008
1009 static void get_feature(Object *obj, Visitor *v, const char *name,
1010 void *opaque, Error **errp)
1011 {
1012 S390Feat feat = (S390Feat) (uintptr_t) opaque;
1013 S390CPU *cpu = S390_CPU(obj);
1014 bool value;
1015
1016 if (!cpu->model) {
1017 error_setg(errp, "Details about the host CPU model are not available, "
1018 "features cannot be queried.");
1019 return;
1020 }
1021
1022 value = test_bit(feat, cpu->model->features);
1023 visit_type_bool(v, name, &value, errp);
1024 }
1025
1026 static void set_feature(Object *obj, Visitor *v, const char *name,
1027 void *opaque, Error **errp)
1028 {
1029 S390Feat feat = (S390Feat) (uintptr_t) opaque;
1030 DeviceState *dev = DEVICE(obj);
1031 S390CPU *cpu = S390_CPU(obj);
1032 bool value;
1033
1034 if (dev->realized) {
1035 error_setg(errp, "Attempt to set property '%s' on '%s' after "
1036 "it was realized", name, object_get_typename(obj));
1037 return;
1038 } else if (!cpu->model) {
1039 error_setg(errp, "Details about the host CPU model are not available, "
1040 "features cannot be changed.");
1041 return;
1042 }
1043
1044 if (!visit_type_bool(v, name, &value, errp)) {
1045 return;
1046 }
1047 if (value) {
1048 if (!test_bit(feat, cpu->model->def->full_feat)) {
1049 error_setg(errp, "Feature '%s' is not available for CPU model '%s',"
1050 " it was introduced with later models.",
1051 name, cpu->model->def->name);
1052 return;
1053 }
1054 set_bit(feat, cpu->model->features);
1055 } else {
1056 clear_bit(feat, cpu->model->features);
1057 }
1058 }
1059
1060 static void get_feature_group(Object *obj, Visitor *v, const char *name,
1061 void *opaque, Error **errp)
1062 {
1063 S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque;
1064 const S390FeatGroupDef *def = s390_feat_group_def(group);
1065 S390CPU *cpu = S390_CPU(obj);
1066 S390FeatBitmap tmp;
1067 bool value;
1068
1069 if (!cpu->model) {
1070 error_setg(errp, "Details about the host CPU model are not available, "
1071 "features cannot be queried.");
1072 return;
1073 }
1074
1075 /* a group is enabled if all features are enabled */
1076 bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX);
1077 value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX);
1078 visit_type_bool(v, name, &value, errp);
1079 }
1080
1081 static void set_feature_group(Object *obj, Visitor *v, const char *name,
1082 void *opaque, Error **errp)
1083 {
1084 S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque;
1085 const S390FeatGroupDef *def = s390_feat_group_def(group);
1086 DeviceState *dev = DEVICE(obj);
1087 S390CPU *cpu = S390_CPU(obj);
1088 bool value;
1089
1090 if (dev->realized) {
1091 error_setg(errp, "Attempt to set property '%s' on '%s' after "
1092 "it was realized", name, object_get_typename(obj));
1093 return;
1094 } else if (!cpu->model) {
1095 error_setg(errp, "Details about the host CPU model are not available, "
1096 "features cannot be changed.");
1097 return;
1098 }
1099
1100 if (!visit_type_bool(v, name, &value, errp)) {
1101 return;
1102 }
1103 if (value) {
1104 /* groups are added in one shot, so an intersect is sufficient */
1105 if (!bitmap_intersects(def->feat, cpu->model->def->full_feat,
1106 S390_FEAT_MAX)) {
1107 error_setg(errp, "Group '%s' is not available for CPU model '%s',"
1108 " it was introduced with later models.",
1109 name, cpu->model->def->name);
1110 return;
1111 }
1112 bitmap_or(cpu->model->features, cpu->model->features, def->feat,
1113 S390_FEAT_MAX);
1114 } else {
1115 bitmap_andnot(cpu->model->features, cpu->model->features, def->feat,
1116 S390_FEAT_MAX);
1117 }
1118 }
1119
1120 static void s390_cpu_model_initfn(Object *obj)
1121 {
1122 S390CPU *cpu = S390_CPU(obj);
1123 S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu);
1124
1125 cpu->model = g_malloc0(sizeof(*cpu->model));
1126 /* copy the model, so we can modify it */
1127 cpu->model->def = xcc->cpu_def;
1128 if (xcc->is_static) {
1129 /* base model - features will never change */
1130 bitmap_copy(cpu->model->features, cpu->model->def->base_feat,
1131 S390_FEAT_MAX);
1132 } else {
1133 /* latest model - features can change */
1134 bitmap_copy(cpu->model->features,
1135 cpu->model->def->default_feat, S390_FEAT_MAX);
1136 }
1137 }
1138
1139 static S390CPUDef s390_qemu_cpu_def;
1140 static S390CPUModel s390_qemu_cpu_model;
1141
1142 /* Set the qemu CPU model (on machine initialization). Must not be called
1143 * once CPUs have been created.
1144 */
1145 void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga,
1146 const S390FeatInit feat_init)
1147 {
1148 const S390CPUDef *def = s390_find_cpu_def(type, gen, ec_ga, NULL);
1149
1150 g_assert(def);
1151 g_assert(QTAILQ_EMPTY_RCU(&cpus));
1152
1153 /* TCG emulates some features that can usually not be enabled with
1154 * the emulated machine generation. Make sure they can be enabled
1155 * when using the QEMU model by adding them to full_feat. We have
1156 * to copy the definition to do that.
1157 */
1158 memcpy(&s390_qemu_cpu_def, def, sizeof(s390_qemu_cpu_def));
1159 bitmap_or(s390_qemu_cpu_def.full_feat, s390_qemu_cpu_def.full_feat,
1160 qemu_max_cpu_feat, S390_FEAT_MAX);
1161
1162 /* build the CPU model */
1163 s390_qemu_cpu_model.def = &s390_qemu_cpu_def;
1164 bitmap_zero(s390_qemu_cpu_model.features, S390_FEAT_MAX);
1165 s390_init_feat_bitmap(feat_init, s390_qemu_cpu_model.features);
1166 }
1167
1168 static void s390_qemu_cpu_model_initfn(Object *obj)
1169 {
1170 S390CPU *cpu = S390_CPU(obj);
1171
1172 cpu->model = g_malloc0(sizeof(*cpu->model));
1173 /* copy the CPU model so we can modify it */
1174 memcpy(cpu->model, &s390_qemu_cpu_model, sizeof(*cpu->model));
1175 }
1176
1177 static void s390_max_cpu_model_initfn(Object *obj)
1178 {
1179 const S390CPUModel *max_model;
1180 S390CPU *cpu = S390_CPU(obj);
1181 Error *local_err = NULL;
1182
1183 if (kvm_enabled() && !kvm_s390_cpu_models_supported()) {
1184 /* "max" and "host" always work, even without CPU model support */
1185 return;
1186 }
1187
1188 max_model = get_max_cpu_model(&local_err);
1189 if (local_err) {
1190 /* we expect errors only under KVM, when actually querying the kernel */
1191 g_assert(kvm_enabled());
1192 error_report_err(local_err);
1193 /* fallback to unsupported CPU models */
1194 return;
1195 }
1196
1197 cpu->model = g_new(S390CPUModel, 1);
1198 /* copy the CPU model so we can modify it */
1199 memcpy(cpu->model, max_model, sizeof(*cpu->model));
1200 }
1201
1202 static void s390_cpu_model_finalize(Object *obj)
1203 {
1204 S390CPU *cpu = S390_CPU(obj);
1205
1206 g_free(cpu->model);
1207 cpu->model = NULL;
1208 }
1209
1210 static bool get_is_migration_safe(Object *obj, Error **errp)
1211 {
1212 return S390_CPU_GET_CLASS(obj)->is_migration_safe;
1213 }
1214
1215 static bool get_is_static(Object *obj, Error **errp)
1216 {
1217 return S390_CPU_GET_CLASS(obj)->is_static;
1218 }
1219
1220 static char *get_description(Object *obj, Error **errp)
1221 {
1222 return g_strdup(S390_CPU_GET_CLASS(obj)->desc);
1223 }
1224
1225 void s390_cpu_model_class_register_props(ObjectClass *oc)
1226 {
1227 S390FeatGroup group;
1228 S390Feat feat;
1229
1230 object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe,
1231 NULL);
1232 object_class_property_add_bool(oc, "static", get_is_static,
1233 NULL);
1234 object_class_property_add_str(oc, "description", get_description, NULL);
1235
1236 for (feat = 0; feat < S390_FEAT_MAX; feat++) {
1237 const S390FeatDef *def = s390_feat_def(feat);
1238 object_class_property_add(oc, def->name, "bool", get_feature,
1239 set_feature, NULL, (void *) feat);
1240 object_class_property_set_description(oc, def->name, def->desc);
1241 }
1242 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) {
1243 const S390FeatGroupDef *def = s390_feat_group_def(group);
1244 object_class_property_add(oc, def->name, "bool", get_feature_group,
1245 set_feature_group, NULL, (void *) group);
1246 object_class_property_set_description(oc, def->name, def->desc);
1247 }
1248 }
1249
1250 #ifdef CONFIG_KVM
1251 static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data)
1252 {
1253 S390CPUClass *xcc = S390_CPU_CLASS(oc);
1254
1255 xcc->kvm_required = true;
1256 xcc->desc = "KVM only: All recognized features";
1257 }
1258 #endif
1259
1260 static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data)
1261 {
1262 S390CPUClass *xcc = S390_CPU_CLASS(oc);
1263
1264 /* all base models are migration safe */
1265 xcc->cpu_def = (const S390CPUDef *) data;
1266 xcc->is_migration_safe = true;
1267 xcc->is_static = true;
1268 xcc->desc = xcc->cpu_def->desc;
1269 }
1270
1271 static void s390_cpu_model_class_init(ObjectClass *oc, void *data)
1272 {
1273 S390CPUClass *xcc = S390_CPU_CLASS(oc);
1274
1275 /* model that can change between QEMU versions */
1276 xcc->cpu_def = (const S390CPUDef *) data;
1277 xcc->is_migration_safe = true;
1278 xcc->desc = xcc->cpu_def->desc;
1279 }
1280
1281 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data)
1282 {
1283 S390CPUClass *xcc = S390_CPU_CLASS(oc);
1284
1285 xcc->is_migration_safe = true;
1286 xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s",
1287 qemu_hw_version());
1288 }
1289
1290 static void s390_max_cpu_model_class_init(ObjectClass *oc, void *data)
1291 {
1292 S390CPUClass *xcc = S390_CPU_CLASS(oc);
1293
1294 /*
1295 * The "max" model is neither static nor migration safe. Under KVM
1296 * it represents the "host" model. Under TCG it represents some kind of
1297 * "qemu" CPU model without compat handling and maybe with some additional
1298 * CPU features that are not yet unlocked in the "qemu" model.
1299 */
1300 xcc->desc =
1301 "Enables all features supported by the accelerator in the current host";
1302 }
1303
1304 /* Generate type name for a cpu model. Caller has to free the string. */
1305 static char *s390_cpu_type_name(const char *model_name)
1306 {
1307 return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name);
1308 }
1309
1310 /* Generate type name for a base cpu model. Caller has to free the string. */
1311 static char *s390_base_cpu_type_name(const char *model_name)
1312 {
1313 return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name);
1314 }
1315
1316 ObjectClass *s390_cpu_class_by_name(const char *name)
1317 {
1318 char *typename = s390_cpu_type_name(name);
1319 ObjectClass *oc;
1320
1321 oc = object_class_by_name(typename);
1322 g_free(typename);
1323 return oc;
1324 }
1325
1326 static const TypeInfo qemu_s390_cpu_type_info = {
1327 .name = S390_CPU_TYPE_NAME("qemu"),
1328 .parent = TYPE_S390_CPU,
1329 .instance_init = s390_qemu_cpu_model_initfn,
1330 .instance_finalize = s390_cpu_model_finalize,
1331 .class_init = s390_qemu_cpu_model_class_init,
1332 };
1333
1334 static const TypeInfo max_s390_cpu_type_info = {
1335 .name = S390_CPU_TYPE_NAME("max"),
1336 .parent = TYPE_S390_CPU,
1337 .instance_init = s390_max_cpu_model_initfn,
1338 .instance_finalize = s390_cpu_model_finalize,
1339 .class_init = s390_max_cpu_model_class_init,
1340 };
1341
1342 #ifdef CONFIG_KVM
1343 static const TypeInfo host_s390_cpu_type_info = {
1344 .name = S390_CPU_TYPE_NAME("host"),
1345 .parent = S390_CPU_TYPE_NAME("max"),
1346 .class_init = s390_host_cpu_model_class_init,
1347 };
1348 #endif
1349
1350 static void init_ignored_base_feat(void)
1351 {
1352 static const int feats[] = {
1353 /* MSA subfunctions that could not be available on certain machines */
1354 S390_FEAT_KMAC_DEA,
1355 S390_FEAT_KMAC_TDEA_128,
1356 S390_FEAT_KMAC_TDEA_192,
1357 S390_FEAT_KMC_DEA,
1358 S390_FEAT_KMC_TDEA_128,
1359 S390_FEAT_KMC_TDEA_192,
1360 S390_FEAT_KM_DEA,
1361 S390_FEAT_KM_TDEA_128,
1362 S390_FEAT_KM_TDEA_192,
1363 S390_FEAT_KIMD_SHA_1,
1364 S390_FEAT_KLMD_SHA_1,
1365 /* CSSKE is deprecated on newer generations */
1366 S390_FEAT_CONDITIONAL_SSKE,
1367 };
1368 int i;
1369
1370 for (i = 0; i < ARRAY_SIZE(feats); i++) {
1371 set_bit(feats[i], ignored_base_feat);
1372 }
1373 }
1374
1375 static void register_types(void)
1376 {
1377 static const S390FeatInit qemu_latest_init = { S390_FEAT_LIST_QEMU_LATEST };
1378 int i;
1379
1380 init_ignored_base_feat();
1381
1382 /* init all bitmaps from gnerated data initially */
1383 s390_init_feat_bitmap(qemu_max_cpu_feat_init, qemu_max_cpu_feat);
1384 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
1385 s390_init_feat_bitmap(s390_cpu_defs[i].base_init,
1386 s390_cpu_defs[i].base_feat);
1387 s390_init_feat_bitmap(s390_cpu_defs[i].default_init,
1388 s390_cpu_defs[i].default_feat);
1389 s390_init_feat_bitmap(s390_cpu_defs[i].full_init,
1390 s390_cpu_defs[i].full_feat);
1391 }
1392
1393 /* initialize the qemu model with latest definition */
1394 s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN,
1395 QEMU_MAX_CPU_EC_GA, qemu_latest_init);
1396
1397 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
1398 char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name);
1399 TypeInfo ti_base = {
1400 .name = base_name,
1401 .parent = TYPE_S390_CPU,
1402 .instance_init = s390_cpu_model_initfn,
1403 .instance_finalize = s390_cpu_model_finalize,
1404 .class_init = s390_base_cpu_model_class_init,
1405 .class_data = (void *) &s390_cpu_defs[i],
1406 };
1407 char *name = s390_cpu_type_name(s390_cpu_defs[i].name);
1408 TypeInfo ti = {
1409 .name = name,
1410 .parent = TYPE_S390_CPU,
1411 .instance_init = s390_cpu_model_initfn,
1412 .instance_finalize = s390_cpu_model_finalize,
1413 .class_init = s390_cpu_model_class_init,
1414 .class_data = (void *) &s390_cpu_defs[i],
1415 };
1416
1417 type_register_static(&ti_base);
1418 type_register_static(&ti);
1419 g_free(base_name);
1420 g_free(name);
1421 }
1422
1423 type_register_static(&qemu_s390_cpu_type_info);
1424 type_register_static(&max_s390_cpu_type_info);
1425 #ifdef CONFIG_KVM
1426 type_register_static(&host_s390_cpu_type_info);
1427 #endif
1428 }
1429
1430 type_init(register_types)