diff options
Diffstat (limited to 'target/s390x/cpu_models.c')
| -rw-r--r-- | target/s390x/cpu_models.c | 1021 |
1 files changed, 1021 insertions, 0 deletions
diff --git a/target/s390x/cpu_models.c b/target/s390x/cpu_models.c new file mode 100644 index 000000000..11e06cc51 --- /dev/null +++ b/target/s390x/cpu_models.c @@ -0,0 +1,1021 @@ +/* + * CPU models for s390x + * + * Copyright 2016 IBM Corp. + * + * Author(s): David Hildenbrand <dahi@linux.vnet.ibm.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or (at + * your option) any later version. See the COPYING file in the top-level + * directory. + */ + +#include "qemu/osdep.h" +#include "cpu.h" +#include "s390x-internal.h" +#include "kvm/kvm_s390x.h" +#include "sysemu/kvm.h" +#include "sysemu/tcg.h" +#include "qapi/error.h" +#include "qapi/visitor.h" +#include "qemu/module.h" +#include "qemu/qemu-print.h" +#ifndef CONFIG_USER_ONLY +#include "sysemu/sysemu.h" +#endif +#include "hw/s390x/pv.h" + +#define CPUDEF_INIT(_type, _gen, _ec_ga, _mha_pow, _hmfai, _name, _desc) \ + { \ + .name = _name, \ + .type = _type, \ + .gen = _gen, \ + .ec_ga = _ec_ga, \ + .mha_pow = _mha_pow, \ + .hmfai = _hmfai, \ + .desc = _desc, \ + .base_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _BASE }, \ + .default_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _DEFAULT }, \ + .full_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _FULL }, \ + } + +/* + * CPU definition list in order of release. Up to generation 14 base features + * of a following release have been a superset of the previous release. With + * generation 15 one base feature and one optional feature have been deprecated. + */ +static S390CPUDef s390_cpu_defs[] = { + CPUDEF_INIT(0x2064, 7, 1, 38, 0x00000000U, "z900", "IBM zSeries 900 GA1"), + CPUDEF_INIT(0x2064, 7, 2, 38, 0x00000000U, "z900.2", "IBM zSeries 900 GA2"), + CPUDEF_INIT(0x2064, 7, 3, 38, 0x00000000U, "z900.3", "IBM zSeries 900 GA3"), + CPUDEF_INIT(0x2066, 7, 3, 38, 0x00000000U, "z800", "IBM zSeries 800 GA1"), + CPUDEF_INIT(0x2084, 8, 1, 38, 0x00000000U, "z990", "IBM zSeries 990 GA1"), + CPUDEF_INIT(0x2084, 8, 2, 38, 0x00000000U, "z990.2", "IBM zSeries 990 GA2"), + CPUDEF_INIT(0x2084, 8, 3, 38, 0x00000000U, "z990.3", "IBM zSeries 990 GA3"), + CPUDEF_INIT(0x2086, 8, 3, 38, 0x00000000U, "z890", "IBM zSeries 880 GA1"), + CPUDEF_INIT(0x2084, 8, 4, 38, 0x00000000U, "z990.4", "IBM zSeries 990 GA4"), + CPUDEF_INIT(0x2086, 8, 4, 38, 0x00000000U, "z890.2", "IBM zSeries 880 GA2"), + CPUDEF_INIT(0x2084, 8, 5, 38, 0x00000000U, "z990.5", "IBM zSeries 990 GA5"), + CPUDEF_INIT(0x2086, 8, 5, 38, 0x00000000U, "z890.3", "IBM zSeries 880 GA3"), + CPUDEF_INIT(0x2094, 9, 1, 40, 0x00000000U, "z9EC", "IBM System z9 EC GA1"), + CPUDEF_INIT(0x2094, 9, 2, 40, 0x00000000U, "z9EC.2", "IBM System z9 EC GA2"), + CPUDEF_INIT(0x2096, 9, 2, 40, 0x00000000U, "z9BC", "IBM System z9 BC GA1"), + CPUDEF_INIT(0x2094, 9, 3, 40, 0x00000000U, "z9EC.3", "IBM System z9 EC GA3"), + CPUDEF_INIT(0x2096, 9, 3, 40, 0x00000000U, "z9BC.2", "IBM System z9 BC GA2"), + CPUDEF_INIT(0x2097, 10, 1, 43, 0x00000000U, "z10EC", "IBM System z10 EC GA1"), + CPUDEF_INIT(0x2097, 10, 2, 43, 0x00000000U, "z10EC.2", "IBM System z10 EC GA2"), + CPUDEF_INIT(0x2098, 10, 2, 43, 0x00000000U, "z10BC", "IBM System z10 BC GA1"), + CPUDEF_INIT(0x2097, 10, 3, 43, 0x00000000U, "z10EC.3", "IBM System z10 EC GA3"), + CPUDEF_INIT(0x2098, 10, 3, 43, 0x00000000U, "z10BC.2", "IBM System z10 BC GA2"), + CPUDEF_INIT(0x2817, 11, 1, 44, 0x08000000U, "z196", "IBM zEnterprise 196 GA1"), + CPUDEF_INIT(0x2817, 11, 2, 44, 0x08000000U, "z196.2", "IBM zEnterprise 196 GA2"), + CPUDEF_INIT(0x2818, 11, 2, 44, 0x08000000U, "z114", "IBM zEnterprise 114 GA1"), + CPUDEF_INIT(0x2827, 12, 1, 44, 0x08000000U, "zEC12", "IBM zEnterprise EC12 GA1"), + CPUDEF_INIT(0x2827, 12, 2, 44, 0x08000000U, "zEC12.2", "IBM zEnterprise EC12 GA2"), + CPUDEF_INIT(0x2828, 12, 2, 44, 0x08000000U, "zBC12", "IBM zEnterprise BC12 GA1"), + CPUDEF_INIT(0x2964, 13, 1, 47, 0x08000000U, "z13", "IBM z13 GA1"), + CPUDEF_INIT(0x2964, 13, 2, 47, 0x08000000U, "z13.2", "IBM z13 GA2"), + CPUDEF_INIT(0x2965, 13, 2, 47, 0x08000000U, "z13s", "IBM z13s GA1"), + CPUDEF_INIT(0x3906, 14, 1, 47, 0x08000000U, "z14", "IBM z14 GA1"), + CPUDEF_INIT(0x3906, 14, 2, 47, 0x08000000U, "z14.2", "IBM z14 GA2"), + CPUDEF_INIT(0x3907, 14, 1, 47, 0x08000000U, "z14ZR1", "IBM z14 Model ZR1 GA1"), + CPUDEF_INIT(0x8561, 15, 1, 47, 0x08000000U, "gen15a", "IBM z15 T01 GA1"), + CPUDEF_INIT(0x8562, 15, 1, 47, 0x08000000U, "gen15b", "IBM z15 T02 GA1"), + CPUDEF_INIT(0x3931, 16, 1, 47, 0x08000000U, "gen16a", "IBM 3931 GA1"), + CPUDEF_INIT(0x3932, 16, 1, 47, 0x08000000U, "gen16b", "IBM 3932 GA1"), +}; + +#define QEMU_MAX_CPU_TYPE 0x3906 +#define QEMU_MAX_CPU_GEN 14 +#define QEMU_MAX_CPU_EC_GA 2 +static const S390FeatInit qemu_max_cpu_feat_init = { S390_FEAT_LIST_QEMU_MAX }; +static S390FeatBitmap qemu_max_cpu_feat; + +/* features part of a base model but not relevant for finding a base model */ +S390FeatBitmap ignored_base_feat; + +void s390_cpudef_featoff(uint8_t gen, uint8_t ec_ga, S390Feat feat) +{ + const S390CPUDef *def; + + def = s390_find_cpu_def(0, gen, ec_ga, NULL); + clear_bit(feat, (unsigned long *)&def->default_feat); +} + +void s390_cpudef_featoff_greater(uint8_t gen, uint8_t ec_ga, S390Feat feat) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { + const S390CPUDef *def = &s390_cpu_defs[i]; + + if (def->gen < gen) { + continue; + } + if (def->gen == gen && def->ec_ga < ec_ga) { + continue; + } + + clear_bit(feat, (unsigned long *)&def->default_feat); + } +} + +void s390_cpudef_group_featoff_greater(uint8_t gen, uint8_t ec_ga, + S390FeatGroup group) +{ + const S390FeatGroupDef *group_def = s390_feat_group_def(group); + S390FeatBitmap group_def_off; + int i; + + bitmap_complement(group_def_off, group_def->feat, S390_FEAT_MAX); + + for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { + const S390CPUDef *cpu_def = &s390_cpu_defs[i]; + + if (cpu_def->gen < gen) { + continue; + } + if (cpu_def->gen == gen && cpu_def->ec_ga < ec_ga) { + continue; + } + + bitmap_and((unsigned long *)&cpu_def->default_feat, + cpu_def->default_feat, group_def_off, S390_FEAT_MAX); + } +} + +uint32_t s390_get_hmfai(void) +{ + static S390CPU *cpu; + + if (!cpu) { + cpu = S390_CPU(qemu_get_cpu(0)); + } + + if (!cpu || !cpu->model) { + return 0; + } + return cpu->model->def->hmfai; +} + +uint8_t s390_get_mha_pow(void) +{ + static S390CPU *cpu; + + if (!cpu) { + cpu = S390_CPU(qemu_get_cpu(0)); + } + + if (!cpu || !cpu->model) { + return 0; + } + return cpu->model->def->mha_pow; +} + +uint32_t s390_get_ibc_val(void) +{ + uint16_t unblocked_ibc, lowest_ibc; + static S390CPU *cpu; + + if (!cpu) { + cpu = S390_CPU(qemu_get_cpu(0)); + } + + if (!cpu || !cpu->model) { + return 0; + } + unblocked_ibc = s390_ibc_from_cpu_model(cpu->model); + lowest_ibc = cpu->model->lowest_ibc; + /* the lowest_ibc always has to be <= unblocked_ibc */ + if (!lowest_ibc || lowest_ibc > unblocked_ibc) { + return 0; + } + return ((uint32_t) lowest_ibc << 16) | unblocked_ibc; +} + +void s390_get_feat_block(S390FeatType type, uint8_t *data) +{ + static S390CPU *cpu; + + if (!cpu) { + cpu = S390_CPU(qemu_get_cpu(0)); + } + + if (!cpu || !cpu->model) { + return; + } + s390_fill_feat_block(cpu->model->features, type, data); +} + +bool s390_has_feat(S390Feat feat) +{ + static S390CPU *cpu; + + if (!cpu) { + cpu = S390_CPU(qemu_get_cpu(0)); + } + + if (!cpu || !cpu->model) { +#ifdef CONFIG_KVM + if (kvm_enabled()) { + if (feat == S390_FEAT_VECTOR) { + return kvm_check_extension(kvm_state, + KVM_CAP_S390_VECTOR_REGISTERS); + } + if (feat == S390_FEAT_RUNTIME_INSTRUMENTATION) { + return kvm_s390_get_ri(); + } + if (feat == S390_FEAT_MSA_EXT_3) { + return true; + } + } +#endif + if (feat == S390_FEAT_ZPCI) { + return true; + } + return 0; + } + + if (s390_is_pv()) { + switch (feat) { + case S390_FEAT_DIAG_318: + case S390_FEAT_HPMA2: + case S390_FEAT_SIE_F2: + case S390_FEAT_SIE_SKEY: + case S390_FEAT_SIE_GPERE: + case S390_FEAT_SIE_SIIF: + case S390_FEAT_SIE_SIGPIF: + case S390_FEAT_SIE_IB: + case S390_FEAT_SIE_CEI: + case S390_FEAT_SIE_KSS: + case S390_FEAT_SIE_GSLS: + case S390_FEAT_SIE_64BSCAO: + case S390_FEAT_SIE_CMMA: + case S390_FEAT_SIE_PFMFI: + case S390_FEAT_SIE_IBS: + return false; + break; + default: + break; + } + } + return test_bit(feat, cpu->model->features); +} + +uint8_t s390_get_gen_for_cpu_type(uint16_t type) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { + if (s390_cpu_defs[i].type == type) { + return s390_cpu_defs[i].gen; + } + } + return 0; +} + +const S390CPUDef *s390_find_cpu_def(uint16_t type, uint8_t gen, uint8_t ec_ga, + S390FeatBitmap features) +{ + const S390CPUDef *last_compatible = NULL; + const S390CPUDef *matching_cpu_type = NULL; + int i; + + if (!gen) { + ec_ga = 0; + } + if (!gen && type) { + gen = s390_get_gen_for_cpu_type(type); + } + + for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { + const S390CPUDef *def = &s390_cpu_defs[i]; + S390FeatBitmap missing; + + /* don't even try newer generations if we know the generation */ + if (gen) { + if (def->gen > gen) { + break; + } else if (def->gen == gen && ec_ga && def->ec_ga > ec_ga) { + break; + } + } + + if (features) { + /* see if the model satisfies the minimum features */ + bitmap_andnot(missing, def->base_feat, features, S390_FEAT_MAX); + /* + * Ignore certain features that are in the base model, but not + * relevant for the search (esp. MSA subfunctions). + */ + bitmap_andnot(missing, missing, ignored_base_feat, S390_FEAT_MAX); + if (!bitmap_empty(missing, S390_FEAT_MAX)) { + break; + } + } + + /* stop the search if we found the exact model */ + if (def->type == type && def->ec_ga == ec_ga) { + return def; + } + /* remember if we've at least seen one with the same cpu type */ + if (def->type == type) { + matching_cpu_type = def; + } + last_compatible = def; + } + /* prefer the model with the same cpu type, esp. don't take the BC for EC */ + if (matching_cpu_type) { + return matching_cpu_type; + } + return last_compatible; +} + +static void s390_print_cpu_model_list_entry(gpointer data, gpointer user_data) +{ + const S390CPUClass *scc = S390_CPU_CLASS((ObjectClass *)data); + char *name = g_strdup(object_class_get_name((ObjectClass *)data)); + const char *details = ""; + + if (scc->is_static) { + details = "(static, migration-safe)"; + } else if (scc->is_migration_safe) { + details = "(migration-safe)"; + } + + /* strip off the -s390x-cpu */ + g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; + qemu_printf("s390 %-15s %-35s %s\n", name, scc->desc, details); + g_free(name); +} + +static gint s390_cpu_list_compare(gconstpointer a, gconstpointer b) +{ + const S390CPUClass *cc_a = S390_CPU_CLASS((ObjectClass *)a); + const S390CPUClass *cc_b = S390_CPU_CLASS((ObjectClass *)b); + const char *name_a = object_class_get_name((ObjectClass *)a); + const char *name_b = object_class_get_name((ObjectClass *)b); + + /* + * Move qemu, host and max to the top of the list, qemu first, host second, + * max third. + */ + if (name_a[0] == 'q') { + return -1; + } else if (name_b[0] == 'q') { + return 1; + } else if (name_a[0] == 'h') { + return -1; + } else if (name_b[0] == 'h') { + return 1; + } else if (name_a[0] == 'm') { + return -1; + } else if (name_b[0] == 'm') { + return 1; + } + + /* keep the same order we have in our table (sorted by release date) */ + if (cc_a->cpu_def != cc_b->cpu_def) { + return cc_a->cpu_def - cc_b->cpu_def; + } + + /* exact same definition - list base model first */ + return cc_a->is_static ? -1 : 1; +} + +void s390_cpu_list(void) +{ + S390FeatGroup group; + S390Feat feat; + GSList *list; + + list = object_class_get_list(TYPE_S390_CPU, false); + list = g_slist_sort(list, s390_cpu_list_compare); + g_slist_foreach(list, s390_print_cpu_model_list_entry, NULL); + g_slist_free(list); + + qemu_printf("\nRecognized feature flags:\n"); + for (feat = 0; feat < S390_FEAT_MAX; feat++) { + const S390FeatDef *def = s390_feat_def(feat); + + qemu_printf("%-20s %s\n", def->name, def->desc); + } + + qemu_printf("\nRecognized feature groups:\n"); + for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { + const S390FeatGroupDef *def = s390_feat_group_def(group); + + qemu_printf("%-20s %s\n", def->name, def->desc); + } +} + +static void check_consistency(const S390CPUModel *model) +{ + static int dep[][2] = { + { S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH }, + { S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH }, + { S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH }, + { S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT }, + { S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH}, + { S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT }, + { S390_FEAT_DFP_FAST, S390_FEAT_DFP }, + { S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 }, + { S390_FEAT_EDAT_2, S390_FEAT_EDAT}, + { S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 }, + { S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 }, + { S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 }, + { S390_FEAT_SIE_CMMA, S390_FEAT_CMM }, + { S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS }, + { S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT }, + { S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 }, + { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_3 }, + { S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_4 }, + { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, + { S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR }, + { S390_FEAT_VECTOR_PACKED_DECIMAL_ENH, S390_FEAT_VECTOR_PACKED_DECIMAL }, + { S390_FEAT_VECTOR_PACKED_DECIMAL_ENH2, S390_FEAT_VECTOR_PACKED_DECIMAL_ENH }, + { S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR }, + { S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, + { S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP }, + { S390_FEAT_CMM_NT, S390_FEAT_CMM }, + { S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 }, + { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST }, + { S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING }, + { S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 }, + { S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA }, + { S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA }, + { S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA }, + { S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA }, + { S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA }, + { S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA }, + { S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA }, + { S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA }, + { S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA }, + { S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA }, + { S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA }, + { S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA }, + { S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 }, + { S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 }, + { S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 }, + { S390_FEAT_AP_QUERY_CONFIG_INFO, S390_FEAT_AP }, + { S390_FEAT_AP_FACILITIES_TEST, S390_FEAT_AP }, + { S390_FEAT_PTFF_QSIE, S390_FEAT_MULTIPLE_EPOCH }, + { S390_FEAT_PTFF_QTOUE, S390_FEAT_MULTIPLE_EPOCH }, + { S390_FEAT_PTFF_STOE, S390_FEAT_MULTIPLE_EPOCH }, + { S390_FEAT_PTFF_STOUE, S390_FEAT_MULTIPLE_EPOCH }, + { S390_FEAT_AP_QUEUE_INTERRUPT_CONTROL, S390_FEAT_AP }, + { S390_FEAT_DIAG_318, S390_FEAT_EXTENDED_LENGTH_SCCB }, + { S390_FEAT_NNPA, S390_FEAT_VECTOR }, + { S390_FEAT_RDP, S390_FEAT_LOCAL_TLB_CLEARING }, + }; + int i; + + for (i = 0; i < ARRAY_SIZE(dep); i++) { + if (test_bit(dep[i][0], model->features) && + !test_bit(dep[i][1], model->features)) { + warn_report("\'%s\' requires \'%s\'.", + s390_feat_def(dep[i][0])->name, + s390_feat_def(dep[i][1])->name); + } + } +} + +static void error_prepend_missing_feat(const char *name, void *opaque) +{ + error_prepend((Error **) opaque, "%s ", name); +} + +static void check_compatibility(const S390CPUModel *max_model, + const S390CPUModel *model, Error **errp) +{ + S390FeatBitmap missing; + + if (model->def->gen > max_model->def->gen) { + error_setg(errp, "Selected CPU generation is too new. Maximum " + "supported model in the configuration: \'%s\'", + max_model->def->name); + return; + } else if (model->def->gen == max_model->def->gen && + model->def->ec_ga > max_model->def->ec_ga) { + error_setg(errp, "Selected CPU GA level is too new. Maximum " + "supported model in the configuration: \'%s\'", + max_model->def->name); + return; + } + +#ifndef CONFIG_USER_ONLY + if (only_migratable && test_bit(S390_FEAT_UNPACK, model->features)) { + error_setg(errp, "The unpack facility is not compatible with " + "the --only-migratable option. You must remove either " + "the 'unpack' facility or the --only-migratable option"); + return; + } +#endif + + /* detect the missing features to properly report them */ + bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX); + if (bitmap_empty(missing, S390_FEAT_MAX)) { + return; + } + + error_setg(errp, " "); + s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat); + error_prepend(errp, "Some features requested in the CPU model are not " + "available in the configuration: "); +} + +S390CPUModel *get_max_cpu_model(Error **errp) +{ + Error *err = NULL; + static S390CPUModel max_model; + static bool cached; + + if (cached) { + return &max_model; + } + + if (kvm_enabled()) { + kvm_s390_get_host_cpu_model(&max_model, &err); + } else { + max_model.def = s390_find_cpu_def(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, + QEMU_MAX_CPU_EC_GA, NULL); + bitmap_copy(max_model.features, qemu_max_cpu_feat, S390_FEAT_MAX); + } + if (err) { + error_propagate(errp, err); + return NULL; + } + cached = true; + return &max_model; +} + +void s390_realize_cpu_model(CPUState *cs, Error **errp) +{ + Error *err = NULL; + S390CPUClass *xcc = S390_CPU_GET_CLASS(cs); + S390CPU *cpu = S390_CPU(cs); + const S390CPUModel *max_model; + + if (xcc->kvm_required && !kvm_enabled()) { + error_setg(errp, "CPU definition requires KVM"); + return; + } + + if (!cpu->model) { + /* no host model support -> perform compatibility stuff */ + apply_cpu_model(NULL, errp); + return; + } + + max_model = get_max_cpu_model(errp); + if (!max_model) { + error_prepend(errp, "CPU models are not available: "); + return; + } + + /* copy over properties that can vary */ + cpu->model->lowest_ibc = max_model->lowest_ibc; + cpu->model->cpu_id = max_model->cpu_id; + cpu->model->cpu_id_format = max_model->cpu_id_format; + cpu->model->cpu_ver = max_model->cpu_ver; + + check_consistency(cpu->model); + check_compatibility(max_model, cpu->model, &err); + if (err) { + error_propagate(errp, err); + return; + } + + apply_cpu_model(cpu->model, errp); + +#if !defined(CONFIG_USER_ONLY) + cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model); + if (tcg_enabled()) { + /* basic mode, write the cpu address into the first 4 bit of the ID */ + cpu->env.cpuid = deposit64(cpu->env.cpuid, 54, 4, cpu->env.core_id); + } +#endif +} + +static void get_feature(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + S390Feat feat = (S390Feat) (uintptr_t) opaque; + S390CPU *cpu = S390_CPU(obj); + bool value; + + if (!cpu->model) { + error_setg(errp, "Details about the host CPU model are not available, " + "features cannot be queried."); + return; + } + + value = test_bit(feat, cpu->model->features); + visit_type_bool(v, name, &value, errp); +} + +static void set_feature(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + S390Feat feat = (S390Feat) (uintptr_t) opaque; + DeviceState *dev = DEVICE(obj); + S390CPU *cpu = S390_CPU(obj); + bool value; + + if (dev->realized) { + error_setg(errp, "Attempt to set property '%s' on '%s' after " + "it was realized", name, object_get_typename(obj)); + return; + } else if (!cpu->model) { + error_setg(errp, "Details about the host CPU model are not available, " + "features cannot be changed."); + return; + } + + if (!visit_type_bool(v, name, &value, errp)) { + return; + } + if (value) { + if (!test_bit(feat, cpu->model->def->full_feat)) { + error_setg(errp, "Feature '%s' is not available for CPU model '%s'," + " it was introduced with later models.", + name, cpu->model->def->name); + return; + } + set_bit(feat, cpu->model->features); + } else { + clear_bit(feat, cpu->model->features); + } +} + +static void get_feature_group(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque; + const S390FeatGroupDef *def = s390_feat_group_def(group); + S390CPU *cpu = S390_CPU(obj); + S390FeatBitmap tmp; + bool value; + + if (!cpu->model) { + error_setg(errp, "Details about the host CPU model are not available, " + "features cannot be queried."); + return; + } + + /* a group is enabled if all features are enabled */ + bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX); + value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX); + visit_type_bool(v, name, &value, errp); +} + +static void set_feature_group(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque; + const S390FeatGroupDef *def = s390_feat_group_def(group); + DeviceState *dev = DEVICE(obj); + S390CPU *cpu = S390_CPU(obj); + bool value; + + if (dev->realized) { + error_setg(errp, "Attempt to set property '%s' on '%s' after " + "it was realized", name, object_get_typename(obj)); + return; + } else if (!cpu->model) { + error_setg(errp, "Details about the host CPU model are not available, " + "features cannot be changed."); + return; + } + + if (!visit_type_bool(v, name, &value, errp)) { + return; + } + if (value) { + /* groups are added in one shot, so an intersect is sufficient */ + if (!bitmap_intersects(def->feat, cpu->model->def->full_feat, + S390_FEAT_MAX)) { + error_setg(errp, "Group '%s' is not available for CPU model '%s'," + " it was introduced with later models.", + name, cpu->model->def->name); + return; + } + bitmap_or(cpu->model->features, cpu->model->features, def->feat, + S390_FEAT_MAX); + } else { + bitmap_andnot(cpu->model->features, cpu->model->features, def->feat, + S390_FEAT_MAX); + } +} + +static void s390_cpu_model_initfn(Object *obj) +{ + S390CPU *cpu = S390_CPU(obj); + S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu); + + cpu->model = g_malloc0(sizeof(*cpu->model)); + /* copy the model, so we can modify it */ + cpu->model->def = xcc->cpu_def; + if (xcc->is_static) { + /* base model - features will never change */ + bitmap_copy(cpu->model->features, cpu->model->def->base_feat, + S390_FEAT_MAX); + } else { + /* latest model - features can change */ + bitmap_copy(cpu->model->features, + cpu->model->def->default_feat, S390_FEAT_MAX); + } +} + +static S390CPUDef s390_qemu_cpu_def; +static S390CPUModel s390_qemu_cpu_model; + +/* Set the qemu CPU model (on machine initialization). Must not be called + * once CPUs have been created. + */ +void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga, + const S390FeatInit feat_init) +{ + const S390CPUDef *def = s390_find_cpu_def(type, gen, ec_ga, NULL); + + g_assert(def); + g_assert(QTAILQ_EMPTY_RCU(&cpus)); + + /* TCG emulates some features that can usually not be enabled with + * the emulated machine generation. Make sure they can be enabled + * when using the QEMU model by adding them to full_feat. We have + * to copy the definition to do that. + */ + memcpy(&s390_qemu_cpu_def, def, sizeof(s390_qemu_cpu_def)); + bitmap_or(s390_qemu_cpu_def.full_feat, s390_qemu_cpu_def.full_feat, + qemu_max_cpu_feat, S390_FEAT_MAX); + + /* build the CPU model */ + s390_qemu_cpu_model.def = &s390_qemu_cpu_def; + bitmap_zero(s390_qemu_cpu_model.features, S390_FEAT_MAX); + s390_init_feat_bitmap(feat_init, s390_qemu_cpu_model.features); +} + +static void s390_qemu_cpu_model_initfn(Object *obj) +{ + S390CPU *cpu = S390_CPU(obj); + + cpu->model = g_malloc0(sizeof(*cpu->model)); + /* copy the CPU model so we can modify it */ + memcpy(cpu->model, &s390_qemu_cpu_model, sizeof(*cpu->model)); +} + +static void s390_max_cpu_model_initfn(Object *obj) +{ + const S390CPUModel *max_model; + S390CPU *cpu = S390_CPU(obj); + Error *local_err = NULL; + + if (kvm_enabled() && !kvm_s390_cpu_models_supported()) { + /* "max" and "host" always work, even without CPU model support */ + return; + } + + max_model = get_max_cpu_model(&local_err); + if (local_err) { + /* we expect errors only under KVM, when actually querying the kernel */ + g_assert(kvm_enabled()); + error_report_err(local_err); + /* fallback to unsupported CPU models */ + return; + } + + cpu->model = g_new(S390CPUModel, 1); + /* copy the CPU model so we can modify it */ + memcpy(cpu->model, max_model, sizeof(*cpu->model)); +} + +static void s390_cpu_model_finalize(Object *obj) +{ + S390CPU *cpu = S390_CPU(obj); + + g_free(cpu->model); + cpu->model = NULL; +} + +static bool get_is_migration_safe(Object *obj, Error **errp) +{ + return S390_CPU_GET_CLASS(obj)->is_migration_safe; +} + +static bool get_is_static(Object *obj, Error **errp) +{ + return S390_CPU_GET_CLASS(obj)->is_static; +} + +static char *get_description(Object *obj, Error **errp) +{ + return g_strdup(S390_CPU_GET_CLASS(obj)->desc); +} + +void s390_cpu_model_class_register_props(ObjectClass *oc) +{ + S390FeatGroup group; + S390Feat feat; + + object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe, + NULL); + object_class_property_add_bool(oc, "static", get_is_static, + NULL); + object_class_property_add_str(oc, "description", get_description, NULL); + + for (feat = 0; feat < S390_FEAT_MAX; feat++) { + const S390FeatDef *def = s390_feat_def(feat); + object_class_property_add(oc, def->name, "bool", get_feature, + set_feature, NULL, (void *) feat); + object_class_property_set_description(oc, def->name, def->desc); + } + for (group = 0; group < S390_FEAT_GROUP_MAX; group++) { + const S390FeatGroupDef *def = s390_feat_group_def(group); + object_class_property_add(oc, def->name, "bool", get_feature_group, + set_feature_group, NULL, (void *) group); + object_class_property_set_description(oc, def->name, def->desc); + } +} + +#ifdef CONFIG_KVM +static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data) +{ + S390CPUClass *xcc = S390_CPU_CLASS(oc); + + xcc->kvm_required = true; + xcc->desc = "KVM only: All recognized features"; +} +#endif + +static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data) +{ + S390CPUClass *xcc = S390_CPU_CLASS(oc); + + /* all base models are migration safe */ + xcc->cpu_def = (const S390CPUDef *) data; + xcc->is_migration_safe = true; + xcc->is_static = true; + xcc->desc = xcc->cpu_def->desc; +} + +static void s390_cpu_model_class_init(ObjectClass *oc, void *data) +{ + S390CPUClass *xcc = S390_CPU_CLASS(oc); + + /* model that can change between QEMU versions */ + xcc->cpu_def = (const S390CPUDef *) data; + xcc->is_migration_safe = true; + xcc->desc = xcc->cpu_def->desc; +} + +static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data) +{ + S390CPUClass *xcc = S390_CPU_CLASS(oc); + + xcc->is_migration_safe = true; + xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s", + qemu_hw_version()); +} + +static void s390_max_cpu_model_class_init(ObjectClass *oc, void *data) +{ + S390CPUClass *xcc = S390_CPU_CLASS(oc); + + /* + * The "max" model is neither static nor migration safe. Under KVM + * it represents the "host" model. Under TCG it represents some kind of + * "qemu" CPU model without compat handling and maybe with some additional + * CPU features that are not yet unlocked in the "qemu" model. + */ + xcc->desc = + "Enables all features supported by the accelerator in the current host"; +} + +/* Generate type name for a cpu model. Caller has to free the string. */ +static char *s390_cpu_type_name(const char *model_name) +{ + return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name); +} + +/* Generate type name for a base cpu model. Caller has to free the string. */ +static char *s390_base_cpu_type_name(const char *model_name) +{ + return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name); +} + +ObjectClass *s390_cpu_class_by_name(const char *name) +{ + char *typename = s390_cpu_type_name(name); + ObjectClass *oc; + + oc = object_class_by_name(typename); + g_free(typename); + return oc; +} + +static const TypeInfo qemu_s390_cpu_type_info = { + .name = S390_CPU_TYPE_NAME("qemu"), + .parent = TYPE_S390_CPU, + .instance_init = s390_qemu_cpu_model_initfn, + .instance_finalize = s390_cpu_model_finalize, + .class_init = s390_qemu_cpu_model_class_init, +}; + +static const TypeInfo max_s390_cpu_type_info = { + .name = S390_CPU_TYPE_NAME("max"), + .parent = TYPE_S390_CPU, + .instance_init = s390_max_cpu_model_initfn, + .instance_finalize = s390_cpu_model_finalize, + .class_init = s390_max_cpu_model_class_init, +}; + +#ifdef CONFIG_KVM +static const TypeInfo host_s390_cpu_type_info = { + .name = S390_CPU_TYPE_NAME("host"), + .parent = S390_CPU_TYPE_NAME("max"), + .class_init = s390_host_cpu_model_class_init, +}; +#endif + +static void init_ignored_base_feat(void) +{ + static const int feats[] = { + /* MSA subfunctions that could not be available on certain machines */ + S390_FEAT_KMAC_DEA, + S390_FEAT_KMAC_TDEA_128, + S390_FEAT_KMAC_TDEA_192, + S390_FEAT_KMC_DEA, + S390_FEAT_KMC_TDEA_128, + S390_FEAT_KMC_TDEA_192, + S390_FEAT_KM_DEA, + S390_FEAT_KM_TDEA_128, + S390_FEAT_KM_TDEA_192, + S390_FEAT_KIMD_SHA_1, + S390_FEAT_KLMD_SHA_1, + /* CSSKE is deprecated on newer generations */ + S390_FEAT_CONDITIONAL_SSKE, + }; + int i; + + for (i = 0; i < ARRAY_SIZE(feats); i++) { + set_bit(feats[i], ignored_base_feat); + } +} + +static void register_types(void) +{ + static const S390FeatInit qemu_latest_init = { S390_FEAT_LIST_QEMU_LATEST }; + int i; + + init_ignored_base_feat(); + + /* init all bitmaps from gnerated data initially */ + s390_init_feat_bitmap(qemu_max_cpu_feat_init, qemu_max_cpu_feat); + for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { + s390_init_feat_bitmap(s390_cpu_defs[i].base_init, + s390_cpu_defs[i].base_feat); + s390_init_feat_bitmap(s390_cpu_defs[i].default_init, + s390_cpu_defs[i].default_feat); + s390_init_feat_bitmap(s390_cpu_defs[i].full_init, + s390_cpu_defs[i].full_feat); + } + + /* initialize the qemu model with latest definition */ + s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, + QEMU_MAX_CPU_EC_GA, qemu_latest_init); + + for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) { + char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name); + TypeInfo ti_base = { + .name = base_name, + .parent = TYPE_S390_CPU, + .instance_init = s390_cpu_model_initfn, + .instance_finalize = s390_cpu_model_finalize, + .class_init = s390_base_cpu_model_class_init, + .class_data = (void *) &s390_cpu_defs[i], + }; + char *name = s390_cpu_type_name(s390_cpu_defs[i].name); + TypeInfo ti = { + .name = name, + .parent = TYPE_S390_CPU, + .instance_init = s390_cpu_model_initfn, + .instance_finalize = s390_cpu_model_finalize, + .class_init = s390_cpu_model_class_init, + .class_data = (void *) &s390_cpu_defs[i], + }; + + type_register_static(&ti_base); + type_register_static(&ti); + g_free(base_name); + g_free(name); + } + + type_register_static(&qemu_s390_cpu_type_info); + type_register_static(&max_s390_cpu_type_info); +#ifdef CONFIG_KVM + type_register_static(&host_s390_cpu_type_info); +#endif +} + +type_init(register_types) |