| /* |
| * 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 "qemu/error-report.h" |
| #include "qapi/visitor.h" |
| #include "qemu/module.h" |
| #include "qemu/hw-version.h" |
| #include "qemu/qemu-print.h" |
| #ifndef CONFIG_USER_ONLY |
| #include "sysemu/sysemu.h" |
| #include "target/s390x/kvm/pv.h" |
| #endif |
| |
| #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 0x8561 |
| #define QEMU_MAX_CPU_GEN 15 |
| #define QEMU_MAX_CPU_EC_GA 1 |
| 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) |
| { |
| S390CPU *cpu = S390_CPU(first_cpu); |
| |
| 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; |
| } |
| |
| #ifndef CONFIG_USER_ONLY |
| 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: |
| case S390_FEAT_CONFIGURATION_TOPOLOGY: |
| return false; |
| break; |
| default: |
| break; |
| } |
| } |
| #endif |
| 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); |
| CPUClass *cc = CPU_CLASS(scc); |
| char *name = g_strdup(object_class_get_name((ObjectClass *)data)); |
| g_autoptr(GString) details = g_string_new(""); |
| |
| if (scc->is_static) { |
| g_string_append(details, "static, "); |
| } |
| if (scc->is_migration_safe) { |
| g_string_append(details, "migration-safe, "); |
| } |
| if (cc->deprecation_note) { |
| g_string_append(details, "deprecated, "); |
| } |
| if (details->len) { |
| /* cull trailing ', ' */ |
| g_string_truncate(details, details->len - 2); |
| } |
| |
| /* strip off the -s390x-cpu */ |
| g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0; |
| if (details->len) { |
| qemu_printf(" %-15s %-35s (%s)\n", name, scc->desc, details->str); |
| } else { |
| qemu_printf(" %-15s %-35s\n", name, scc->desc); |
| } |
| 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; |
| |
| qemu_printf("Available CPUs:\n"); |
| 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 }, |
| { S390_FEAT_UV_FEAT_AP, S390_FEAT_AP }, |
| { S390_FEAT_UV_FEAT_AP_INTR, S390_FEAT_UV_FEAT_AP }, |
| }; |
| 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_compat_model_failed(Error **errp, |
| const S390CPUModel *max_model, |
| const char *msg) |
| { |
| error_setg(errp, "%s. Maximum supported model in the current configuration: \'%s\'", |
| msg, max_model->def->name); |
| error_append_hint(errp, "Consider a different accelerator, try \"-accel help\"\n"); |
| return; |
| } |
| |
| static bool check_compatibility(const S390CPUModel *max_model, |
| const S390CPUModel *model, Error **errp) |
| { |
| ERRP_GUARD(); |
| S390FeatBitmap missing; |
| |
| if (model->def->gen > max_model->def->gen) { |
| check_compat_model_failed(errp, max_model, "Selected CPU generation is too new"); |
| return false; |
| } else if (model->def->gen == max_model->def->gen && |
| model->def->ec_ga > max_model->def->ec_ga) { |
| check_compat_model_failed(errp, max_model, "Selected CPU GA level is too new"); |
| return false; |
| } |
| |
| #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 false; |
| } |
| #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 true; |
| } |
| |
| 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 current configuration: "); |
| error_append_hint(errp, |
| "Consider a different accelerator, QEMU, or kernel version\n"); |
| return false; |
| } |
| |
| S390CPUModel *get_max_cpu_model(Error **errp) |
| { |
| static S390CPUModel max_model; |
| static bool cached; |
| |
| if (cached) { |
| return &max_model; |
| } |
| |
| if (kvm_enabled()) { |
| if (!kvm_s390_get_host_cpu_model(&max_model, errp)) { |
| return NULL; |
| } |
| } 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); |
| } |
| cached = true; |
| return &max_model; |
| } |
| |
| void s390_realize_cpu_model(CPUState *cs, Error **errp) |
| { |
| ERRP_GUARD(); |
| 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); |
| if (!check_compatibility(max_model, cpu->model, errp)) { |
| 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()) { |
| cpu->env.cpuid = deposit64(cpu->env.cpuid, CPU_PHYS_ADDR_SHIFT, |
| CPU_PHYS_ADDR_BITS, 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 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_queue)); |
| |
| /* build the CPU model */ |
| s390_qemu_cpu_model.def = 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 the "qemu" CPU |
| * model of the latest QEMU machine. |
| */ |
| 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_max_init = { S390_FEAT_LIST_QEMU_MAX }; |
| int i; |
| |
| init_ignored_base_feat(); |
| |
| /* init all bitmaps from generated data initially */ |
| s390_init_feat_bitmap(qemu_max_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 the maximum definition ("max" model) */ |
| s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN, |
| QEMU_MAX_CPU_EC_GA, qemu_max_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) |
