migration: increase max-bandwidth to 128 MiB/s (1 Gib/s)
[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 "hw/pci/pci.h"
30 #endif
31 #include "qapi/qapi-commands-machine-target.h"
32
33 #define CPUDEF_INIT(_type, _gen, _ec_ga, _mha_pow, _hmfai, _name, _desc) \
34 { \
35 .name = _name, \
36 .type = _type, \
37 .gen = _gen, \
38 .ec_ga = _ec_ga, \
39 .mha_pow = _mha_pow, \
40 .hmfai = _hmfai, \
41 .desc = _desc, \
42 .base_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _BASE }, \
43 .default_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _DEFAULT }, \
44 .full_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _FULL }, \
45 }
46
47 /*
48 * CPU definition list in order of release. Up to generation 14 base features
49 * of a following release have been a superset of the previous release. With
50 * generation 15 one base feature and one optional feature have been deprecated.
51 */
52 static S390CPUDef s390_cpu_defs[] = {
53 CPUDEF_INIT(0x2064, 7, 1, 38, 0x00000000U, "z900", "IBM zSeries 900 GA1"),
54 CPUDEF_INIT(0x2064, 7, 2, 38, 0x00000000U, "z900.2", "IBM zSeries 900 GA2"),
55 CPUDEF_INIT(0x2064, 7, 3, 38, 0x00000000U, "z900.3", "IBM zSeries 900 GA3"),
56 CPUDEF_INIT(0x2066, 7, 3, 38, 0x00000000U, "z800", "IBM zSeries 800 GA1"),
57 CPUDEF_INIT(0x2084, 8, 1, 38, 0x00000000U, "z990", "IBM zSeries 990 GA1"),
58 CPUDEF_INIT(0x2084, 8, 2, 38, 0x00000000U, "z990.2", "IBM zSeries 990 GA2"),
59 CPUDEF_INIT(0x2084, 8, 3, 38, 0x00000000U, "z990.3", "IBM zSeries 990 GA3"),
60 CPUDEF_INIT(0x2086, 8, 3, 38, 0x00000000U, "z890", "IBM zSeries 880 GA1"),
61 CPUDEF_INIT(0x2084, 8, 4, 38, 0x00000000U, "z990.4", "IBM zSeries 990 GA4"),
62 CPUDEF_INIT(0x2086, 8, 4, 38, 0x00000000U, "z890.2", "IBM zSeries 880 GA2"),
63 CPUDEF_INIT(0x2084, 8, 5, 38, 0x00000000U, "z990.5", "IBM zSeries 990 GA5"),
64 CPUDEF_INIT(0x2086, 8, 5, 38, 0x00000000U, "z890.3", "IBM zSeries 880 GA3"),
65 CPUDEF_INIT(0x2094, 9, 1, 40, 0x00000000U, "z9EC", "IBM System z9 EC GA1"),
66 CPUDEF_INIT(0x2094, 9, 2, 40, 0x00000000U, "z9EC.2", "IBM System z9 EC GA2"),
67 CPUDEF_INIT(0x2096, 9, 2, 40, 0x00000000U, "z9BC", "IBM System z9 BC GA1"),
68 CPUDEF_INIT(0x2094, 9, 3, 40, 0x00000000U, "z9EC.3", "IBM System z9 EC GA3"),
69 CPUDEF_INIT(0x2096, 9, 3, 40, 0x00000000U, "z9BC.2", "IBM System z9 BC GA2"),
70 CPUDEF_INIT(0x2097, 10, 1, 43, 0x00000000U, "z10EC", "IBM System z10 EC GA1"),
71 CPUDEF_INIT(0x2097, 10, 2, 43, 0x00000000U, "z10EC.2", "IBM System z10 EC GA2"),
72 CPUDEF_INIT(0x2098, 10, 2, 43, 0x00000000U, "z10BC", "IBM System z10 BC GA1"),
73 CPUDEF_INIT(0x2097, 10, 3, 43, 0x00000000U, "z10EC.3", "IBM System z10 EC GA3"),
74 CPUDEF_INIT(0x2098, 10, 3, 43, 0x00000000U, "z10BC.2", "IBM System z10 BC GA2"),
75 CPUDEF_INIT(0x2817, 11, 1, 44, 0x08000000U, "z196", "IBM zEnterprise 196 GA1"),
76 CPUDEF_INIT(0x2817, 11, 2, 44, 0x08000000U, "z196.2", "IBM zEnterprise 196 GA2"),
77 CPUDEF_INIT(0x2818, 11, 2, 44, 0x08000000U, "z114", "IBM zEnterprise 114 GA1"),
78 CPUDEF_INIT(0x2827, 12, 1, 44, 0x08000000U, "zEC12", "IBM zEnterprise EC12 GA1"),
79 CPUDEF_INIT(0x2827, 12, 2, 44, 0x08000000U, "zEC12.2", "IBM zEnterprise EC12 GA2"),
80 CPUDEF_INIT(0x2828, 12, 2, 44, 0x08000000U, "zBC12", "IBM zEnterprise BC12 GA1"),
81 CPUDEF_INIT(0x2964, 13, 1, 47, 0x08000000U, "z13", "IBM z13 GA1"),
82 CPUDEF_INIT(0x2964, 13, 2, 47, 0x08000000U, "z13.2", "IBM z13 GA2"),
83 CPUDEF_INIT(0x2965, 13, 2, 47, 0x08000000U, "z13s", "IBM z13s GA1"),
84 CPUDEF_INIT(0x3906, 14, 1, 47, 0x08000000U, "z14", "IBM z14 GA1"),
85 CPUDEF_INIT(0x3906, 14, 2, 47, 0x08000000U, "z14.2", "IBM z14 GA2"),
86 CPUDEF_INIT(0x3907, 14, 1, 47, 0x08000000U, "z14ZR1", "IBM z14 Model ZR1 GA1"),
87 CPUDEF_INIT(0x8561, 15, 1, 47, 0x08000000U, "gen15a", "IBM z15 GA1"),
88 CPUDEF_INIT(0x8562, 15, 1, 47, 0x08000000U, "gen15b", "IBM 8562 GA1"),
89 };
90
91 #define QEMU_MAX_CPU_TYPE 0x2964
92 #define QEMU_MAX_CPU_GEN 13
93 #define QEMU_MAX_CPU_EC_GA 2
94 static const S390FeatInit qemu_max_cpu_feat_init = { S390_FEAT_LIST_QEMU_MAX };
95 static S390FeatBitmap qemu_max_cpu_feat;
96
97 /* features part of a base model but not relevant for finding a base model */
98 S390FeatBitmap ignored_base_feat;
99
100 void s390_cpudef_featoff(uint8_t gen, uint8_t ec_ga, S390Feat feat)
101 {
102 const S390CPUDef *def;
103
104 def = s390_find_cpu_def(0, gen, ec_ga, NULL);
105 clear_bit(feat, (unsigned long *)&def->default_feat);
106 }
107
108 void s390_cpudef_featoff_greater(uint8_t gen, uint8_t ec_ga, S390Feat feat)
109 {
110 int i;
111
112 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
113 const S390CPUDef *def = &s390_cpu_defs[i];
114
115 if (def->gen < gen) {
116 continue;
117 }
118 if (def->gen == gen && def->ec_ga < ec_ga) {
119 continue;
120 }
121
122 clear_bit(feat, (unsigned long *)&def->default_feat);
123 }
124 }
125
126 void s390_cpudef_group_featoff_greater(uint8_t gen, uint8_t ec_ga,
127 S390FeatGroup group)
128 {
129 const S390FeatGroupDef *group_def = s390_feat_group_def(group);
130 S390FeatBitmap group_def_off;
131 int i;
132
133 bitmap_complement(group_def_off, group_def->feat, S390_FEAT_MAX);
134
135 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
136 const S390CPUDef *cpu_def = &s390_cpu_defs[i];
137
138 if (cpu_def->gen < gen) {
139 continue;
140 }
141 if (cpu_def->gen == gen && cpu_def->ec_ga < ec_ga) {
142 continue;
143 }
144
145 bitmap_and((unsigned long *)&cpu_def->default_feat,
146 cpu_def->default_feat, group_def_off, S390_FEAT_MAX);
147 }
148 }
149
150 uint32_t s390_get_hmfai(void)
151 {
152 static S390CPU *cpu;
153
154 if (!cpu) {
155 cpu = S390_CPU(qemu_get_cpu(0));
156 }
157
158 if (!cpu || !cpu->model) {
159 return 0;
160 }
161 return cpu->model->def->hmfai;
162 }
163
164 uint8_t s390_get_mha_pow(void)
165 {
166 static S390CPU *cpu;
167
168 if (!cpu) {
169 cpu = S390_CPU(qemu_get_cpu(0));
170 }
171
172 if (!cpu || !cpu->model) {
173 return 0;
174 }
175 return cpu->model->def->mha_pow;
176 }
177
178 uint32_t s390_get_ibc_val(void)
179 {
180 uint16_t unblocked_ibc, lowest_ibc;
181 static S390CPU *cpu;
182
183 if (!cpu) {
184 cpu = S390_CPU(qemu_get_cpu(0));
185 }
186
187 if (!cpu || !cpu->model) {
188 return 0;
189 }
190 unblocked_ibc = s390_ibc_from_cpu_model(cpu->model);
191 lowest_ibc = cpu->model->lowest_ibc;
192 /* the lowest_ibc always has to be <= unblocked_ibc */
193 if (!lowest_ibc || lowest_ibc > unblocked_ibc) {
194 return 0;
195 }
196 return ((uint32_t) lowest_ibc << 16) | unblocked_ibc;
197 }
198
199 void s390_get_feat_block(S390FeatType type, uint8_t *data)
200 {
201 static S390CPU *cpu;
202
203 if (!cpu) {
204 cpu = S390_CPU(qemu_get_cpu(0));
205 }
206
207 if (!cpu || !cpu->model) {
208 return;
209 }
210 s390_fill_feat_block(cpu->model->features, type, data);
211 }
212
213 bool s390_has_feat(S390Feat feat)
214 {
215 static S390CPU *cpu;
216
217 if (!cpu) {
218 cpu = S390_CPU(qemu_get_cpu(0));
219 }
220
221 if (!cpu || !cpu->model) {
222 #ifdef CONFIG_KVM
223 if (kvm_enabled()) {
224 if (feat == S390_FEAT_VECTOR) {
225 return kvm_check_extension(kvm_state,
226 KVM_CAP_S390_VECTOR_REGISTERS);
227 }
228 if (feat == S390_FEAT_RUNTIME_INSTRUMENTATION) {
229 return kvm_s390_get_ri();
230 }
231 if (feat == S390_FEAT_MSA_EXT_3) {
232 return true;
233 }
234 }
235 #endif
236 if (feat == S390_FEAT_ZPCI) {
237 return true;
238 }
239 return 0;
240 }
241 return test_bit(feat, cpu->model->features);
242 }
243
244 uint8_t s390_get_gen_for_cpu_type(uint16_t type)
245 {
246 int i;
247
248 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
249 if (s390_cpu_defs[i].type == type) {
250 return s390_cpu_defs[i].gen;
251 }
252 }
253 return 0;
254 }
255
256 const S390CPUDef *s390_find_cpu_def(uint16_t type, uint8_t gen, uint8_t ec_ga,
257 S390FeatBitmap features)
258 {
259 const S390CPUDef *last_compatible = NULL;
260 const S390CPUDef *matching_cpu_type = NULL;
261 int i;
262
263 if (!gen) {
264 ec_ga = 0;
265 }
266 if (!gen && type) {
267 gen = s390_get_gen_for_cpu_type(type);
268 }
269
270 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
271 const S390CPUDef *def = &s390_cpu_defs[i];
272 S390FeatBitmap missing;
273
274 /* don't even try newer generations if we know the generation */
275 if (gen) {
276 if (def->gen > gen) {
277 break;
278 } else if (def->gen == gen && ec_ga && def->ec_ga > ec_ga) {
279 break;
280 }
281 }
282
283 if (features) {
284 /* see if the model satisfies the minimum features */
285 bitmap_andnot(missing, def->base_feat, features, S390_FEAT_MAX);
286 /*
287 * Ignore certain features that are in the base model, but not
288 * relevant for the search (esp. MSA subfunctions).
289 */
290 bitmap_andnot(missing, missing, ignored_base_feat, S390_FEAT_MAX);
291 if (!bitmap_empty(missing, S390_FEAT_MAX)) {
292 break;
293 }
294 }
295
296 /* stop the search if we found the exact model */
297 if (def->type == type && def->ec_ga == ec_ga) {
298 return def;
299 }
300 /* remember if we've at least seen one with the same cpu type */
301 if (def->type == type) {
302 matching_cpu_type = def;
303 }
304 last_compatible = def;
305 }
306 /* prefer the model with the same cpu type, esp. don't take the BC for EC */
307 if (matching_cpu_type) {
308 return matching_cpu_type;
309 }
310 return last_compatible;
311 }
312
313 static void s390_print_cpu_model_list_entry(gpointer data, gpointer user_data)
314 {
315 const S390CPUClass *scc = S390_CPU_CLASS((ObjectClass *)data);
316 char *name = g_strdup(object_class_get_name((ObjectClass *)data));
317 const char *details = "";
318
319 if (scc->is_static) {
320 details = "(static, migration-safe)";
321 } else if (scc->is_migration_safe) {
322 details = "(migration-safe)";
323 }
324
325 /* strip off the -s390x-cpu */
326 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0;
327 qemu_printf("s390 %-15s %-35s %s\n", name, scc->desc, details);
328 g_free(name);
329 }
330
331 static gint s390_cpu_list_compare(gconstpointer a, gconstpointer b)
332 {
333 const S390CPUClass *cc_a = S390_CPU_CLASS((ObjectClass *)a);
334 const S390CPUClass *cc_b = S390_CPU_CLASS((ObjectClass *)b);
335 const char *name_a = object_class_get_name((ObjectClass *)a);
336 const char *name_b = object_class_get_name((ObjectClass *)b);
337
338 /*
339 * Move qemu, host and max to the top of the list, qemu first, host second,
340 * max third.
341 */
342 if (name_a[0] == 'q') {
343 return -1;
344 } else if (name_b[0] == 'q') {
345 return 1;
346 } else if (name_a[0] == 'h') {
347 return -1;
348 } else if (name_b[0] == 'h') {
349 return 1;
350 } else if (name_a[0] == 'm') {
351 return -1;
352 } else if (name_b[0] == 'm') {
353 return 1;
354 }
355
356 /* keep the same order we have in our table (sorted by release date) */
357 if (cc_a->cpu_def != cc_b->cpu_def) {
358 return cc_a->cpu_def - cc_b->cpu_def;
359 }
360
361 /* exact same definition - list base model first */
362 return cc_a->is_static ? -1 : 1;
363 }
364
365 void s390_cpu_list(void)
366 {
367 S390FeatGroup group;
368 S390Feat feat;
369 GSList *list;
370
371 list = object_class_get_list(TYPE_S390_CPU, false);
372 list = g_slist_sort(list, s390_cpu_list_compare);
373 g_slist_foreach(list, s390_print_cpu_model_list_entry, NULL);
374 g_slist_free(list);
375
376 qemu_printf("\nRecognized feature flags:\n");
377 for (feat = 0; feat < S390_FEAT_MAX; feat++) {
378 const S390FeatDef *def = s390_feat_def(feat);
379
380 qemu_printf("%-20s %-50s\n", def->name, def->desc);
381 }
382
383 qemu_printf("\nRecognized feature groups:\n");
384 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) {
385 const S390FeatGroupDef *def = s390_feat_group_def(group);
386
387 qemu_printf("%-20s %-50s\n", def->name, def->desc);
388 }
389 }
390
391 static S390CPUModel *get_max_cpu_model(Error **errp);
392
393 #ifndef CONFIG_USER_ONLY
394 static void list_add_feat(const char *name, void *opaque);
395
396 static void check_unavailable_features(const S390CPUModel *max_model,
397 const S390CPUModel *model,
398 strList **unavailable)
399 {
400 S390FeatBitmap missing;
401
402 /* check general model compatibility */
403 if (max_model->def->gen < model->def->gen ||
404 (max_model->def->gen == model->def->gen &&
405 max_model->def->ec_ga < model->def->ec_ga)) {
406 list_add_feat("type", unavailable);
407 }
408
409 /* detect missing features if any to properly report them */
410 bitmap_andnot(missing, model->features, max_model->features,
411 S390_FEAT_MAX);
412 if (!bitmap_empty(missing, S390_FEAT_MAX)) {
413 s390_feat_bitmap_to_ascii(missing, unavailable, list_add_feat);
414 }
415 }
416
417 struct CpuDefinitionInfoListData {
418 CpuDefinitionInfoList *list;
419 S390CPUModel *model;
420 };
421
422 static void create_cpu_model_list(ObjectClass *klass, void *opaque)
423 {
424 struct CpuDefinitionInfoListData *cpu_list_data = opaque;
425 CpuDefinitionInfoList **cpu_list = &cpu_list_data->list;
426 CpuDefinitionInfoList *entry;
427 CpuDefinitionInfo *info;
428 char *name = g_strdup(object_class_get_name(klass));
429 S390CPUClass *scc = S390_CPU_CLASS(klass);
430
431 /* strip off the -s390x-cpu */
432 g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0;
433 info = g_new0(CpuDefinitionInfo, 1);
434 info->name = name;
435 info->has_migration_safe = true;
436 info->migration_safe = scc->is_migration_safe;
437 info->q_static = scc->is_static;
438 info->q_typename = g_strdup(object_class_get_name(klass));
439 /* check for unavailable features */
440 if (cpu_list_data->model) {
441 Object *obj;
442 S390CPU *sc;
443 obj = object_new_with_class(klass);
444 sc = S390_CPU(obj);
445 if (sc->model) {
446 info->has_unavailable_features = true;
447 check_unavailable_features(cpu_list_data->model, sc->model,
448 &info->unavailable_features);
449 }
450 object_unref(obj);
451 }
452
453 entry = g_new0(CpuDefinitionInfoList, 1);
454 entry->value = info;
455 entry->next = *cpu_list;
456 *cpu_list = entry;
457 }
458
459 CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp)
460 {
461 struct CpuDefinitionInfoListData list_data = {
462 .list = NULL,
463 };
464
465 list_data.model = get_max_cpu_model(NULL);
466
467 object_class_foreach(create_cpu_model_list, TYPE_S390_CPU, false,
468 &list_data);
469
470 return list_data.list;
471 }
472
473 static void cpu_model_from_info(S390CPUModel *model, const CpuModelInfo *info,
474 Error **errp)
475 {
476 Error *err = NULL;
477 const QDict *qdict = NULL;
478 const QDictEntry *e;
479 Visitor *visitor;
480 ObjectClass *oc;
481 S390CPU *cpu;
482 Object *obj;
483
484 if (info->props) {
485 qdict = qobject_to(QDict, info->props);
486 if (!qdict) {
487 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict");
488 return;
489 }
490 }
491
492 oc = cpu_class_by_name(TYPE_S390_CPU, info->name);
493 if (!oc) {
494 error_setg(errp, "The CPU definition \'%s\' is unknown.", info->name);
495 return;
496 }
497 if (S390_CPU_CLASS(oc)->kvm_required && !kvm_enabled()) {
498 error_setg(errp, "The CPU definition '%s' requires KVM", info->name);
499 return;
500 }
501 obj = object_new_with_class(oc);
502 cpu = S390_CPU(obj);
503
504 if (!cpu->model) {
505 error_setg(errp, "Details about the host CPU model are not available, "
506 "it cannot be used.");
507 object_unref(obj);
508 return;
509 }
510
511 if (qdict) {
512 visitor = qobject_input_visitor_new(info->props);
513 if (!visit_start_struct(visitor, NULL, NULL, 0, errp)) {
514 visit_free(visitor);
515 object_unref(obj);
516 return;
517 }
518 for (e = qdict_first(qdict); e; e = qdict_next(qdict, e)) {
519 if (!object_property_set(obj, e->key, visitor, &err)) {
520 break;
521 }
522 }
523 if (!err) {
524 visit_check_struct(visitor, &err);
525 }
526 visit_end_struct(visitor, NULL);
527 visit_free(visitor);
528 if (err) {
529 error_propagate(errp, err);
530 object_unref(obj);
531 return;
532 }
533 }
534
535 /* copy the model and throw the cpu away */
536 memcpy(model, cpu->model, sizeof(*model));
537 object_unref(obj);
538 }
539
540 static void qdict_add_disabled_feat(const char *name, void *opaque)
541 {
542 qdict_put_bool(opaque, name, false);
543 }
544
545 static void qdict_add_enabled_feat(const char *name, void *opaque)
546 {
547 qdict_put_bool(opaque, name, true);
548 }
549
550 /* convert S390CPUDef into a static CpuModelInfo */
551 static void cpu_info_from_model(CpuModelInfo *info, const S390CPUModel *model,
552 bool delta_changes)
553 {
554 QDict *qdict = qdict_new();
555 S390FeatBitmap bitmap;
556
557 /* always fallback to the static base model */
558 info->name = g_strdup_printf("%s-base", model->def->name);
559
560 if (delta_changes) {
561 /* features deleted from the base feature set */
562 bitmap_andnot(bitmap, model->def->base_feat, model->features,
563 S390_FEAT_MAX);
564 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) {
565 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat);
566 }
567
568 /* features added to the base feature set */
569 bitmap_andnot(bitmap, model->features, model->def->base_feat,
570 S390_FEAT_MAX);
571 if (!bitmap_empty(bitmap, S390_FEAT_MAX)) {
572 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_enabled_feat);
573 }
574 } else {
575 /* expand all features */
576 s390_feat_bitmap_to_ascii(model->features, qdict,
577 qdict_add_enabled_feat);
578 bitmap_complement(bitmap, model->features, S390_FEAT_MAX);
579 s390_feat_bitmap_to_ascii(bitmap, qdict, qdict_add_disabled_feat);
580 }
581
582 if (!qdict_size(qdict)) {
583 qobject_unref(qdict);
584 } else {
585 info->props = QOBJECT(qdict);
586 info->has_props = true;
587 }
588 }
589
590 CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,
591 CpuModelInfo *model,
592 Error **errp)
593 {
594 Error *err = NULL;
595 CpuModelExpansionInfo *expansion_info = NULL;
596 S390CPUModel s390_model;
597 bool delta_changes = false;
598
599 /* convert it to our internal representation */
600 cpu_model_from_info(&s390_model, model, &err);
601 if (err) {
602 error_propagate(errp, err);
603 return NULL;
604 }
605
606 if (type == CPU_MODEL_EXPANSION_TYPE_STATIC) {
607 delta_changes = true;
608 } else if (type != CPU_MODEL_EXPANSION_TYPE_FULL) {
609 error_setg(errp, "The requested expansion type is not supported.");
610 return NULL;
611 }
612
613 /* convert it back to a static representation */
614 expansion_info = g_new0(CpuModelExpansionInfo, 1);
615 expansion_info->model = g_malloc0(sizeof(*expansion_info->model));
616 cpu_info_from_model(expansion_info->model, &s390_model, delta_changes);
617 return expansion_info;
618 }
619
620 static void list_add_feat(const char *name, void *opaque)
621 {
622 strList **last = (strList **) opaque;
623 strList *entry;
624
625 entry = g_new0(strList, 1);
626 entry->value = g_strdup(name);
627 entry->next = *last;
628 *last = entry;
629 }
630
631 CpuModelCompareInfo *qmp_query_cpu_model_comparison(CpuModelInfo *infoa,
632 CpuModelInfo *infob,
633 Error **errp)
634 {
635 Error *err = NULL;
636 CpuModelCompareResult feat_result, gen_result;
637 CpuModelCompareInfo *compare_info;
638 S390FeatBitmap missing, added;
639 S390CPUModel modela, modelb;
640
641 /* convert both models to our internal representation */
642 cpu_model_from_info(&modela, infoa, &err);
643 if (err) {
644 error_propagate(errp, err);
645 return NULL;
646 }
647 cpu_model_from_info(&modelb, infob, &err);
648 if (err) {
649 error_propagate(errp, err);
650 return NULL;
651 }
652 compare_info = g_new0(CpuModelCompareInfo, 1);
653
654 /* check the cpu generation and ga level */
655 if (modela.def->gen == modelb.def->gen) {
656 if (modela.def->ec_ga == modelb.def->ec_ga) {
657 /* ec and corresponding bc are identical */
658 gen_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL;
659 } else if (modela.def->ec_ga < modelb.def->ec_ga) {
660 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET;
661 } else {
662 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET;
663 }
664 } else if (modela.def->gen < modelb.def->gen) {
665 gen_result = CPU_MODEL_COMPARE_RESULT_SUBSET;
666 } else {
667 gen_result = CPU_MODEL_COMPARE_RESULT_SUPERSET;
668 }
669 if (gen_result != CPU_MODEL_COMPARE_RESULT_IDENTICAL) {
670 /* both models cannot be made identical */
671 list_add_feat("type", &compare_info->responsible_properties);
672 }
673
674 /* check the feature set */
675 if (bitmap_equal(modela.features, modelb.features, S390_FEAT_MAX)) {
676 feat_result = CPU_MODEL_COMPARE_RESULT_IDENTICAL;
677 } else {
678 bitmap_andnot(missing, modela.features, modelb.features, S390_FEAT_MAX);
679 s390_feat_bitmap_to_ascii(missing,
680 &compare_info->responsible_properties,
681 list_add_feat);
682 bitmap_andnot(added, modelb.features, modela.features, S390_FEAT_MAX);
683 s390_feat_bitmap_to_ascii(added, &compare_info->responsible_properties,
684 list_add_feat);
685 if (bitmap_empty(missing, S390_FEAT_MAX)) {
686 feat_result = CPU_MODEL_COMPARE_RESULT_SUBSET;
687 } else if (bitmap_empty(added, S390_FEAT_MAX)) {
688 feat_result = CPU_MODEL_COMPARE_RESULT_SUPERSET;
689 } else {
690 feat_result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE;
691 }
692 }
693
694 /* combine the results */
695 if (gen_result == feat_result) {
696 compare_info->result = gen_result;
697 } else if (feat_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) {
698 compare_info->result = gen_result;
699 } else if (gen_result == CPU_MODEL_COMPARE_RESULT_IDENTICAL) {
700 compare_info->result = feat_result;
701 } else {
702 compare_info->result = CPU_MODEL_COMPARE_RESULT_INCOMPATIBLE;
703 }
704 return compare_info;
705 }
706
707 CpuModelBaselineInfo *qmp_query_cpu_model_baseline(CpuModelInfo *infoa,
708 CpuModelInfo *infob,
709 Error **errp)
710 {
711 Error *err = NULL;
712 CpuModelBaselineInfo *baseline_info;
713 S390CPUModel modela, modelb, model;
714 uint16_t cpu_type;
715 uint8_t max_gen_ga;
716 uint8_t max_gen;
717
718 /* convert both models to our internal representation */
719 cpu_model_from_info(&modela, infoa, &err);
720 if (err) {
721 error_propagate(errp, err);
722 return NULL;
723 }
724
725 cpu_model_from_info(&modelb, infob, &err);
726 if (err) {
727 error_propagate(errp, err);
728 return NULL;
729 }
730
731 /* features both models support */
732 bitmap_and(model.features, modela.features, modelb.features, S390_FEAT_MAX);
733
734 /* detect the maximum model not regarding features */
735 if (modela.def->gen == modelb.def->gen) {
736 if (modela.def->type == modelb.def->type) {
737 cpu_type = modela.def->type;
738 } else {
739 cpu_type = 0;
740 }
741 max_gen = modela.def->gen;
742 max_gen_ga = MIN(modela.def->ec_ga, modelb.def->ec_ga);
743 } else if (modela.def->gen > modelb.def->gen) {
744 cpu_type = modelb.def->type;
745 max_gen = modelb.def->gen;
746 max_gen_ga = modelb.def->ec_ga;
747 } else {
748 cpu_type = modela.def->type;
749 max_gen = modela.def->gen;
750 max_gen_ga = modela.def->ec_ga;
751 }
752
753 model.def = s390_find_cpu_def(cpu_type, max_gen, max_gen_ga,
754 model.features);
755
756 /* models without early base features (esan3) are bad */
757 if (!model.def) {
758 error_setg(errp, "No compatible CPU model could be created as"
759 " important base features are disabled");
760 return NULL;
761 }
762
763 /* strip off features not part of the max model */
764 bitmap_and(model.features, model.features, model.def->full_feat,
765 S390_FEAT_MAX);
766
767 baseline_info = g_new0(CpuModelBaselineInfo, 1);
768 baseline_info->model = g_malloc0(sizeof(*baseline_info->model));
769 cpu_info_from_model(baseline_info->model, &model, true);
770 return baseline_info;
771 }
772 #endif
773
774 static void check_consistency(const S390CPUModel *model)
775 {
776 static int dep[][2] = {
777 { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH },
778 { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH },
779 { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH },
780 { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT },
781 { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH},
782 { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT },
783 { S390_FEAT_DFP_FAST, S390_FEAT_DFP },
784 { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 },
785 { S390_FEAT_EDAT_2, S390_FEAT_EDAT},
786 { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 },
787 { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 },
788 { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 },
789 { S390_FEAT_SIE_CMMA, S390_FEAT_CMM },
790 { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS },
791 { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT },
792 { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 },
793 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_3 },
794 { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_4 },
795 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING },
796 { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR },
797 { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR },
798 { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 },
799 { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP },
800 { S390_FEAT_CMM_NT, S390_FEAT_CMM },
801 { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 },
802 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST },
803 { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING },
804 { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 },
805 { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA },
806 { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA },
807 { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA },
808 { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA },
809 { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA },
810 { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA },
811 { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA },
812 { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA },
813 { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA },
814 { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA },
815 { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA },
816 { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA },
817 { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 },
818 { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 },
819 { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 },
820 { S390_FEAT_AP_QUERY_CONFIG_INFO, S390_FEAT_AP },
821 { S390_FEAT_AP_FACILITIES_TEST, S390_FEAT_AP },
822 { S390_FEAT_PTFF_QSIE, S390_FEAT_MULTIPLE_EPOCH },
823 { S390_FEAT_PTFF_QTOUE, S390_FEAT_MULTIPLE_EPOCH },
824 { S390_FEAT_PTFF_STOE, S390_FEAT_MULTIPLE_EPOCH },
825 { S390_FEAT_PTFF_STOUE, S390_FEAT_MULTIPLE_EPOCH },
826 { S390_FEAT_AP_QUEUE_INTERRUPT_CONTROL, S390_FEAT_AP },
827 };
828 int i;
829
830 for (i = 0; i < ARRAY_SIZE(dep); i++) {
831 if (test_bit(dep[i][0], model->features) &&
832 !test_bit(dep[i][1], model->features)) {
833 warn_report("\'%s\' requires \'%s\'.",
834 s390_feat_def(dep[i][0])->name,
835 s390_feat_def(dep[i][1])->name);
836 }
837 }
838 }
839
840 static void error_prepend_missing_feat(const char *name, void *opaque)
841 {
842 error_prepend((Error **) opaque, "%s ", name);
843 }
844
845 static void check_compatibility(const S390CPUModel *max_model,
846 const S390CPUModel *model, Error **errp)
847 {
848 S390FeatBitmap missing;
849
850 if (model->def->gen > max_model->def->gen) {
851 error_setg(errp, "Selected CPU generation is too new. Maximum "
852 "supported model in the configuration: \'%s\'",
853 max_model->def->name);
854 return;
855 } else if (model->def->gen == max_model->def->gen &&
856 model->def->ec_ga > max_model->def->ec_ga) {
857 error_setg(errp, "Selected CPU GA level is too new. Maximum "
858 "supported model in the configuration: \'%s\'",
859 max_model->def->name);
860 return;
861 }
862
863 /* detect the missing features to properly report them */
864 bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX);
865 if (bitmap_empty(missing, S390_FEAT_MAX)) {
866 return;
867 }
868
869 error_setg(errp, " ");
870 s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat);
871 error_prepend(errp, "Some features requested in the CPU model are not "
872 "available in the configuration: ");
873 }
874
875 static S390CPUModel *get_max_cpu_model(Error **errp)
876 {
877 Error *err = NULL;
878 static S390CPUModel max_model;
879 static bool cached;
880
881 if (cached) {
882 return &max_model;
883 }
884
885 if (kvm_enabled()) {
886 kvm_s390_get_host_cpu_model(&max_model, &err);
887 } else {
888 max_model.def = s390_find_cpu_def(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN,
889 QEMU_MAX_CPU_EC_GA, NULL);
890 bitmap_copy(max_model.features, qemu_max_cpu_feat, S390_FEAT_MAX);
891 }
892 if (err) {
893 error_propagate(errp, err);
894 return NULL;
895 }
896 cached = true;
897 return &max_model;
898 }
899
900 static inline void apply_cpu_model(const S390CPUModel *model, Error **errp)
901 {
902 #ifndef CONFIG_USER_ONLY
903 Error *err = NULL;
904 static S390CPUModel applied_model;
905 static bool applied;
906
907 /*
908 * We have the same model for all VCPUs. KVM can only be configured before
909 * any VCPUs are defined in KVM.
910 */
911 if (applied) {
912 if (model && memcmp(&applied_model, model, sizeof(S390CPUModel))) {
913 error_setg(errp, "Mixed CPU models are not supported on s390x.");
914 }
915 return;
916 }
917
918 if (kvm_enabled()) {
919 kvm_s390_apply_cpu_model(model, &err);
920 if (err) {
921 error_propagate(errp, err);
922 return;
923 }
924 }
925
926 applied = true;
927 if (model) {
928 applied_model = *model;
929 }
930 #endif
931 }
932
933 void s390_realize_cpu_model(CPUState *cs, Error **errp)
934 {
935 Error *err = NULL;
936 S390CPUClass *xcc = S390_CPU_GET_CLASS(cs);
937 S390CPU *cpu = S390_CPU(cs);
938 const S390CPUModel *max_model;
939
940 if (xcc->kvm_required && !kvm_enabled()) {
941 error_setg(errp, "CPU definition requires KVM");
942 return;
943 }
944
945 if (!cpu->model) {
946 /* no host model support -> perform compatibility stuff */
947 apply_cpu_model(NULL, errp);
948 return;
949 }
950
951 max_model = get_max_cpu_model(errp);
952 if (!max_model) {
953 error_prepend(errp, "CPU models are not available: ");
954 return;
955 }
956
957 /* copy over properties that can vary */
958 cpu->model->lowest_ibc = max_model->lowest_ibc;
959 cpu->model->cpu_id = max_model->cpu_id;
960 cpu->model->cpu_id_format = max_model->cpu_id_format;
961 cpu->model->cpu_ver = max_model->cpu_ver;
962
963 check_consistency(cpu->model);
964 check_compatibility(max_model, cpu->model, &err);
965 if (err) {
966 error_propagate(errp, err);
967 return;
968 }
969
970 apply_cpu_model(cpu->model, errp);
971
972 #if !defined(CONFIG_USER_ONLY)
973 cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model);
974 if (tcg_enabled()) {
975 /* basic mode, write the cpu address into the first 4 bit of the ID */
976 cpu->env.cpuid = deposit64(cpu->env.cpuid, 54, 4, cpu->env.core_id);
977 }
978 #endif
979 }
980
981 static void get_feature(Object *obj, Visitor *v, const char *name,
982 void *opaque, Error **errp)
983 {
984 S390Feat feat = (S390Feat) opaque;
985 S390CPU *cpu = S390_CPU(obj);
986 bool value;
987
988 if (!cpu->model) {
989 error_setg(errp, "Details about the host CPU model are not available, "
990 "features cannot be queried.");
991 return;
992 }
993
994 value = test_bit(feat, cpu->model->features);
995 visit_type_bool(v, name, &value, errp);
996 }
997
998 static void set_feature(Object *obj, Visitor *v, const char *name,
999 void *opaque, Error **errp)
1000 {
1001 S390Feat feat = (S390Feat) opaque;
1002 DeviceState *dev = DEVICE(obj);
1003 S390CPU *cpu = S390_CPU(obj);
1004 bool value;
1005
1006 if (dev->realized) {
1007 error_setg(errp, "Attempt to set property '%s' on '%s' after "
1008 "it was realized", name, object_get_typename(obj));
1009 return;
1010 } else if (!cpu->model) {
1011 error_setg(errp, "Details about the host CPU model are not available, "
1012 "features cannot be changed.");
1013 return;
1014 }
1015
1016 if (!visit_type_bool(v, name, &value, errp)) {
1017 return;
1018 }
1019 if (value) {
1020 if (!test_bit(feat, cpu->model->def->full_feat)) {
1021 error_setg(errp, "Feature '%s' is not available for CPU model '%s',"
1022 " it was introduced with later models.",
1023 name, cpu->model->def->name);
1024 return;
1025 }
1026 set_bit(feat, cpu->model->features);
1027 } else {
1028 clear_bit(feat, cpu->model->features);
1029 }
1030 }
1031
1032 static void get_feature_group(Object *obj, Visitor *v, const char *name,
1033 void *opaque, Error **errp)
1034 {
1035 S390FeatGroup group = (S390FeatGroup) opaque;
1036 const S390FeatGroupDef *def = s390_feat_group_def(group);
1037 S390CPU *cpu = S390_CPU(obj);
1038 S390FeatBitmap tmp;
1039 bool value;
1040
1041 if (!cpu->model) {
1042 error_setg(errp, "Details about the host CPU model are not available, "
1043 "features cannot be queried.");
1044 return;
1045 }
1046
1047 /* a group is enabled if all features are enabled */
1048 bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX);
1049 value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX);
1050 visit_type_bool(v, name, &value, errp);
1051 }
1052
1053 static void set_feature_group(Object *obj, Visitor *v, const char *name,
1054 void *opaque, Error **errp)
1055 {
1056 S390FeatGroup group = (S390FeatGroup) opaque;
1057 const S390FeatGroupDef *def = s390_feat_group_def(group);
1058 DeviceState *dev = DEVICE(obj);
1059 S390CPU *cpu = S390_CPU(obj);
1060 bool value;
1061
1062 if (dev->realized) {
1063 error_setg(errp, "Attempt to set property '%s' on '%s' after "
1064 "it was realized", name, object_get_typename(obj));
1065 return;
1066 } else if (!cpu->model) {
1067 error_setg(errp, "Details about the host CPU model are not available, "
1068 "features cannot be changed.");
1069 return;
1070 }
1071
1072 if (!visit_type_bool(v, name, &value, errp)) {
1073 return;
1074 }
1075 if (value) {
1076 /* groups are added in one shot, so an intersect is sufficient */
1077 if (!bitmap_intersects(def->feat, cpu->model->def->full_feat,
1078 S390_FEAT_MAX)) {
1079 error_setg(errp, "Group '%s' is not available for CPU model '%s',"
1080 " it was introduced with later models.",
1081 name, cpu->model->def->name);
1082 return;
1083 }
1084 bitmap_or(cpu->model->features, cpu->model->features, def->feat,
1085 S390_FEAT_MAX);
1086 } else {
1087 bitmap_andnot(cpu->model->features, cpu->model->features, def->feat,
1088 S390_FEAT_MAX);
1089 }
1090 }
1091
1092 static void s390_cpu_model_initfn(Object *obj)
1093 {
1094 S390CPU *cpu = S390_CPU(obj);
1095 S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu);
1096
1097 cpu->model = g_malloc0(sizeof(*cpu->model));
1098 /* copy the model, so we can modify it */
1099 cpu->model->def = xcc->cpu_def;
1100 if (xcc->is_static) {
1101 /* base model - features will never change */
1102 bitmap_copy(cpu->model->features, cpu->model->def->base_feat,
1103 S390_FEAT_MAX);
1104 } else {
1105 /* latest model - features can change */
1106 bitmap_copy(cpu->model->features,
1107 cpu->model->def->default_feat, S390_FEAT_MAX);
1108 }
1109 }
1110
1111 static S390CPUDef s390_qemu_cpu_def;
1112 static S390CPUModel s390_qemu_cpu_model;
1113
1114 /* Set the qemu CPU model (on machine initialization). Must not be called
1115 * once CPUs have been created.
1116 */
1117 void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga,
1118 const S390FeatInit feat_init)
1119 {
1120 const S390CPUDef *def = s390_find_cpu_def(type, gen, ec_ga, NULL);
1121
1122 g_assert(def);
1123 g_assert(QTAILQ_EMPTY_RCU(&cpus));
1124
1125 /* TCG emulates some features that can usually not be enabled with
1126 * the emulated machine generation. Make sure they can be enabled
1127 * when using the QEMU model by adding them to full_feat. We have
1128 * to copy the definition to do that.
1129 */
1130 memcpy(&s390_qemu_cpu_def, def, sizeof(s390_qemu_cpu_def));
1131 bitmap_or(s390_qemu_cpu_def.full_feat, s390_qemu_cpu_def.full_feat,
1132 qemu_max_cpu_feat, S390_FEAT_MAX);
1133
1134 /* build the CPU model */
1135 s390_qemu_cpu_model.def = &s390_qemu_cpu_def;
1136 bitmap_zero(s390_qemu_cpu_model.features, S390_FEAT_MAX);
1137 s390_init_feat_bitmap(feat_init, s390_qemu_cpu_model.features);
1138 }
1139
1140 static void s390_qemu_cpu_model_initfn(Object *obj)
1141 {
1142 S390CPU *cpu = S390_CPU(obj);
1143
1144 cpu->model = g_malloc0(sizeof(*cpu->model));
1145 /* copy the CPU model so we can modify it */
1146 memcpy(cpu->model, &s390_qemu_cpu_model, sizeof(*cpu->model));
1147 }
1148
1149 static void s390_max_cpu_model_initfn(Object *obj)
1150 {
1151 const S390CPUModel *max_model;
1152 S390CPU *cpu = S390_CPU(obj);
1153 Error *local_err = NULL;
1154
1155 if (kvm_enabled() && !kvm_s390_cpu_models_supported()) {
1156 /* "max" and "host" always work, even without CPU model support */
1157 return;
1158 }
1159
1160 max_model = get_max_cpu_model(&local_err);
1161 if (local_err) {
1162 /* we expect errors only under KVM, when actually querying the kernel */
1163 g_assert(kvm_enabled());
1164 error_report_err(local_err);
1165 /* fallback to unsupported CPU models */
1166 return;
1167 }
1168
1169 cpu->model = g_new(S390CPUModel, 1);
1170 /* copy the CPU model so we can modify it */
1171 memcpy(cpu->model, max_model, sizeof(*cpu->model));
1172 }
1173
1174 static void s390_cpu_model_finalize(Object *obj)
1175 {
1176 S390CPU *cpu = S390_CPU(obj);
1177
1178 g_free(cpu->model);
1179 cpu->model = NULL;
1180 }
1181
1182 static bool get_is_migration_safe(Object *obj, Error **errp)
1183 {
1184 return S390_CPU_GET_CLASS(obj)->is_migration_safe;
1185 }
1186
1187 static bool get_is_static(Object *obj, Error **errp)
1188 {
1189 return S390_CPU_GET_CLASS(obj)->is_static;
1190 }
1191
1192 static char *get_description(Object *obj, Error **errp)
1193 {
1194 return g_strdup(S390_CPU_GET_CLASS(obj)->desc);
1195 }
1196
1197 void s390_cpu_model_class_register_props(ObjectClass *oc)
1198 {
1199 S390FeatGroup group;
1200 S390Feat feat;
1201
1202 object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe,
1203 NULL);
1204 object_class_property_add_bool(oc, "static", get_is_static,
1205 NULL);
1206 object_class_property_add_str(oc, "description", get_description, NULL);
1207
1208 for (feat = 0; feat < S390_FEAT_MAX; feat++) {
1209 const S390FeatDef *def = s390_feat_def(feat);
1210 object_class_property_add(oc, def->name, "bool", get_feature,
1211 set_feature, NULL, (void *) feat);
1212 object_class_property_set_description(oc, def->name, def->desc);
1213 }
1214 for (group = 0; group < S390_FEAT_GROUP_MAX; group++) {
1215 const S390FeatGroupDef *def = s390_feat_group_def(group);
1216 object_class_property_add(oc, def->name, "bool", get_feature_group,
1217 set_feature_group, NULL, (void *) group);
1218 object_class_property_set_description(oc, def->name, def->desc);
1219 }
1220 }
1221
1222 #ifdef CONFIG_KVM
1223 static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data)
1224 {
1225 S390CPUClass *xcc = S390_CPU_CLASS(oc);
1226
1227 xcc->kvm_required = true;
1228 xcc->desc = "KVM only: All recognized features";
1229 }
1230 #endif
1231
1232 static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data)
1233 {
1234 S390CPUClass *xcc = S390_CPU_CLASS(oc);
1235
1236 /* all base models are migration safe */
1237 xcc->cpu_def = (const S390CPUDef *) data;
1238 xcc->is_migration_safe = true;
1239 xcc->is_static = true;
1240 xcc->desc = xcc->cpu_def->desc;
1241 }
1242
1243 static void s390_cpu_model_class_init(ObjectClass *oc, void *data)
1244 {
1245 S390CPUClass *xcc = S390_CPU_CLASS(oc);
1246
1247 /* model that can change between QEMU versions */
1248 xcc->cpu_def = (const S390CPUDef *) data;
1249 xcc->is_migration_safe = true;
1250 xcc->desc = xcc->cpu_def->desc;
1251 }
1252
1253 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data)
1254 {
1255 S390CPUClass *xcc = S390_CPU_CLASS(oc);
1256
1257 xcc->is_migration_safe = true;
1258 xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s",
1259 qemu_hw_version());
1260 }
1261
1262 static void s390_max_cpu_model_class_init(ObjectClass *oc, void *data)
1263 {
1264 S390CPUClass *xcc = S390_CPU_CLASS(oc);
1265
1266 /*
1267 * The "max" model is neither static nor migration safe. Under KVM
1268 * it represents the "host" model. Under TCG it represents some kind of
1269 * "qemu" CPU model without compat handling and maybe with some additional
1270 * CPU features that are not yet unlocked in the "qemu" model.
1271 */
1272 xcc->desc =
1273 "Enables all features supported by the accelerator in the current host";
1274 }
1275
1276 /* Generate type name for a cpu model. Caller has to free the string. */
1277 static char *s390_cpu_type_name(const char *model_name)
1278 {
1279 return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name);
1280 }
1281
1282 /* Generate type name for a base cpu model. Caller has to free the string. */
1283 static char *s390_base_cpu_type_name(const char *model_name)
1284 {
1285 return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name);
1286 }
1287
1288 ObjectClass *s390_cpu_class_by_name(const char *name)
1289 {
1290 char *typename = s390_cpu_type_name(name);
1291 ObjectClass *oc;
1292
1293 oc = object_class_by_name(typename);
1294 g_free(typename);
1295 return oc;
1296 }
1297
1298 static const TypeInfo qemu_s390_cpu_type_info = {
1299 .name = S390_CPU_TYPE_NAME("qemu"),
1300 .parent = TYPE_S390_CPU,
1301 .instance_init = s390_qemu_cpu_model_initfn,
1302 .instance_finalize = s390_cpu_model_finalize,
1303 .class_init = s390_qemu_cpu_model_class_init,
1304 };
1305
1306 static const TypeInfo max_s390_cpu_type_info = {
1307 .name = S390_CPU_TYPE_NAME("max"),
1308 .parent = TYPE_S390_CPU,
1309 .instance_init = s390_max_cpu_model_initfn,
1310 .instance_finalize = s390_cpu_model_finalize,
1311 .class_init = s390_max_cpu_model_class_init,
1312 };
1313
1314 #ifdef CONFIG_KVM
1315 static const TypeInfo host_s390_cpu_type_info = {
1316 .name = S390_CPU_TYPE_NAME("host"),
1317 .parent = S390_CPU_TYPE_NAME("max"),
1318 .class_init = s390_host_cpu_model_class_init,
1319 };
1320 #endif
1321
1322 static void init_ignored_base_feat(void)
1323 {
1324 static const int feats[] = {
1325 /* MSA subfunctions that could not be available on certain machines */
1326 S390_FEAT_KMAC_DEA,
1327 S390_FEAT_KMAC_TDEA_128,
1328 S390_FEAT_KMAC_TDEA_192,
1329 S390_FEAT_KMC_DEA,
1330 S390_FEAT_KMC_TDEA_128,
1331 S390_FEAT_KMC_TDEA_192,
1332 S390_FEAT_KM_DEA,
1333 S390_FEAT_KM_TDEA_128,
1334 S390_FEAT_KM_TDEA_192,
1335 S390_FEAT_KIMD_SHA_1,
1336 S390_FEAT_KLMD_SHA_1,
1337 /* CSSKE is deprecated on newer generations */
1338 S390_FEAT_CONDITIONAL_SSKE,
1339 };
1340 int i;
1341
1342 for (i = 0; i < ARRAY_SIZE(feats); i++) {
1343 set_bit(feats[i], ignored_base_feat);
1344 }
1345 }
1346
1347 static void register_types(void)
1348 {
1349 static const S390FeatInit qemu_latest_init = { S390_FEAT_LIST_QEMU_LATEST };
1350 int i;
1351
1352 init_ignored_base_feat();
1353
1354 /* init all bitmaps from gnerated data initially */
1355 s390_init_feat_bitmap(qemu_max_cpu_feat_init, qemu_max_cpu_feat);
1356 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
1357 s390_init_feat_bitmap(s390_cpu_defs[i].base_init,
1358 s390_cpu_defs[i].base_feat);
1359 s390_init_feat_bitmap(s390_cpu_defs[i].default_init,
1360 s390_cpu_defs[i].default_feat);
1361 s390_init_feat_bitmap(s390_cpu_defs[i].full_init,
1362 s390_cpu_defs[i].full_feat);
1363 }
1364
1365 /* initialize the qemu model with latest definition */
1366 s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN,
1367 QEMU_MAX_CPU_EC_GA, qemu_latest_init);
1368
1369 for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
1370 char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name);
1371 TypeInfo ti_base = {
1372 .name = base_name,
1373 .parent = TYPE_S390_CPU,
1374 .instance_init = s390_cpu_model_initfn,
1375 .instance_finalize = s390_cpu_model_finalize,
1376 .class_init = s390_base_cpu_model_class_init,
1377 .class_data = (void *) &s390_cpu_defs[i],
1378 };
1379 char *name = s390_cpu_type_name(s390_cpu_defs[i].name);
1380 TypeInfo ti = {
1381 .name = name,
1382 .parent = TYPE_S390_CPU,
1383 .instance_init = s390_cpu_model_initfn,
1384 .instance_finalize = s390_cpu_model_finalize,
1385 .class_init = s390_cpu_model_class_init,
1386 .class_data = (void *) &s390_cpu_defs[i],
1387 };
1388
1389 type_register_static(&ti_base);
1390 type_register_static(&ti);
1391 g_free(base_name);
1392 g_free(name);
1393 }
1394
1395 type_register_static(&qemu_s390_cpu_type_info);
1396 type_register_static(&max_s390_cpu_type_info);
1397 #ifdef CONFIG_KVM
1398 type_register_static(&host_s390_cpu_type_info);
1399 #endif
1400 }
1401
1402 type_init(register_types)