diff options
| -rw-r--r-- | hw/s390x/s390-virtio-ccw.c | 4 | ||||
| -rw-r--r-- | target/s390x/cpu.h | 3 | ||||
| -rw-r--r-- | target/s390x/cpu_models.c | 106 | ||||
| -rw-r--r-- | target/s390x/cpu_models.h | 1 | ||||
| -rw-r--r-- | target/s390x/gen-features.c | 88 |
5 files changed, 143 insertions, 59 deletions
diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c index fe3f3b2ad6..466e45343c 100644 --- a/hw/s390x/s390-virtio-ccw.c +++ b/hw/s390x/s390-virtio-ccw.c @@ -734,7 +734,11 @@ DEFINE_CCW_MACHINE(2_12, "2.12", true); static void ccw_machine_2_11_instance_options(MachineState *machine) { + static const S390FeatInit qemu_cpu_feat = { S390_FEAT_LIST_QEMU_V2_11 }; ccw_machine_2_12_instance_options(machine); + + /* before 2.12 we emulated the very first z900 */ + s390_set_qemu_cpu_model(0x2064, 7, 1, qemu_cpu_feat); } static void ccw_machine_2_11_class_options(MachineClass *mc) diff --git a/target/s390x/cpu.h b/target/s390x/cpu.h index f9d4d62c48..1a8b6b9ae9 100644 --- a/target/s390x/cpu.h +++ b/target/s390x/cpu.h @@ -722,6 +722,9 @@ static inline unsigned int s390_cpu_set_state(uint8_t cpu_state, S390CPU *cpu) /* cpu_models.c */ void s390_cpu_list(FILE *f, fprintf_function cpu_fprintf); #define cpu_list s390_cpu_list +void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga, + const S390FeatInit feat_init); + /* helper.c */ #define cpu_init(cpu_model) cpu_generic_init(TYPE_S390_CPU, cpu_model) diff --git a/target/s390x/cpu_models.c b/target/s390x/cpu_models.c index edac7fdecf..212a5f0697 100644 --- a/target/s390x/cpu_models.c +++ b/target/s390x/cpu_models.c @@ -15,7 +15,6 @@ #include "internal.h" #include "kvm_s390x.h" #include "sysemu/kvm.h" -#include "gen-features.h" #include "qapi/error.h" #include "qapi/visitor.h" #include "qemu/error-report.h" @@ -81,6 +80,12 @@ static S390CPUDef s390_cpu_defs[] = { CPUDEF_INIT(0x3906, 14, 1, 47, 0x08000000U, "z14", "IBM z14 GA1"), }; +#define QEMU_MAX_CPU_TYPE 0x2827 +#define QEMU_MAX_CPU_GEN 12 +#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; @@ -812,51 +817,6 @@ static void check_compatibility(const S390CPUModel *max_model, "available in the configuration: "); } -/** - * The base TCG CPU model "qemu" is based on the z900. However, we already - * can also emulate some additional features of later CPU generations, so - * we add these additional feature bits here. - */ -static void add_qemu_cpu_model_features(S390FeatBitmap fbm) -{ - static const int feats[] = { - S390_FEAT_DAT_ENH, - S390_FEAT_IDTE_SEGMENT, - S390_FEAT_STFLE, - S390_FEAT_SENSE_RUNNING_STATUS, - S390_FEAT_EXTENDED_TRANSLATION_2, - S390_FEAT_MSA, - S390_FEAT_LONG_DISPLACEMENT, - S390_FEAT_LONG_DISPLACEMENT_FAST, - S390_FEAT_EXTENDED_IMMEDIATE, - S390_FEAT_EXTENDED_TRANSLATION_3, - S390_FEAT_ETF2_ENH, - S390_FEAT_STORE_CLOCK_FAST, - S390_FEAT_MOVE_WITH_OPTIONAL_SPEC, - S390_FEAT_ETF3_ENH, - S390_FEAT_EXTRACT_CPU_TIME, - S390_FEAT_COMPARE_AND_SWAP_AND_STORE, - S390_FEAT_COMPARE_AND_SWAP_AND_STORE_2, - S390_FEAT_GENERAL_INSTRUCTIONS_EXT, - S390_FEAT_EXECUTE_EXT, - S390_FEAT_SET_PROGRAM_PARAMETERS, - S390_FEAT_FLOATING_POINT_SUPPPORT_ENH, - S390_FEAT_STFLE_45, - S390_FEAT_STFLE_49, - S390_FEAT_LOCAL_TLB_CLEARING, - S390_FEAT_INTERLOCKED_ACCESS_2, - S390_FEAT_STFLE_53, - S390_FEAT_MSA_EXT_5, - S390_FEAT_MSA_EXT_3, - S390_FEAT_MSA_EXT_4, - }; - int i; - - for (i = 0; i < ARRAY_SIZE(feats); i++) { - set_bit(feats[i], fbm); - } -} - static S390CPUModel *get_max_cpu_model(Error **errp) { static S390CPUModel max_model; @@ -869,12 +829,10 @@ static S390CPUModel *get_max_cpu_model(Error **errp) if (kvm_enabled()) { kvm_s390_get_host_cpu_model(&max_model, errp); } else { - /* TCG emulates a z900 (with some optional additional features) */ - max_model.def = &s390_cpu_defs[0]; - bitmap_copy(max_model.features, max_model.def->default_feat, - S390_FEAT_MAX); - add_qemu_cpu_model_features(max_model.features); - } + 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 (!*errp) { cached = true; return &max_model; @@ -1130,18 +1088,42 @@ static void s390_host_cpu_model_initfn(Object *obj) } #endif +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(&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) { - static S390CPUDef s390_qemu_cpu_defs; S390CPU *cpu = S390_CPU(obj); cpu->model = g_malloc0(sizeof(*cpu->model)); - /* TCG emulates a z900 (with some optional additional features) */ - memcpy(&s390_qemu_cpu_defs, &s390_cpu_defs[0], sizeof(s390_qemu_cpu_defs)); - add_qemu_cpu_model_features(s390_qemu_cpu_defs.full_feat); - cpu->model->def = &s390_qemu_cpu_defs; - bitmap_copy(cpu->model->features, cpu->model->def->default_feat, - S390_FEAT_MAX); + /* copy the CPU model so we can modify it */ + memcpy(cpu->model, &s390_qemu_cpu_model, sizeof(*cpu->model)); } static void s390_cpu_model_finalize(Object *obj) @@ -1282,11 +1264,13 @@ static void init_ignored_base_feat(void) 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); @@ -1296,6 +1280,10 @@ static void register_types(void) 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 = { diff --git a/target/s390x/cpu_models.h b/target/s390x/cpu_models.h index 4c6dee1871..11cf5386fb 100644 --- a/target/s390x/cpu_models.h +++ b/target/s390x/cpu_models.h @@ -14,6 +14,7 @@ #define TARGET_S390X_CPU_MODELS_H #include "cpu_features.h" +#include "gen-features.h" #include "qom/cpu.h" /* static CPU definition */ diff --git a/target/s390x/gen-features.c b/target/s390x/gen-features.c index 68e6c31b4b..b24f6ada5b 100644 --- a/target/s390x/gen-features.c +++ b/target/s390x/gen-features.c @@ -536,6 +536,52 @@ static uint16_t default_GEN14_GA1[] = { S390_FEAT_GROUP_MSA_EXT_8, }; +/* QEMU (CPU model) features */ + +static uint16_t qemu_V2_11[] = { + S390_FEAT_GROUP_PLO, + S390_FEAT_ESAN3, + S390_FEAT_ZARCH, +}; + +static uint16_t qemu_LATEST[] = { + S390_FEAT_DAT_ENH, + S390_FEAT_IDTE_SEGMENT, + S390_FEAT_STFLE, + S390_FEAT_SENSE_RUNNING_STATUS, + S390_FEAT_EXTENDED_TRANSLATION_2, + S390_FEAT_MSA, + S390_FEAT_LONG_DISPLACEMENT, + S390_FEAT_LONG_DISPLACEMENT_FAST, + S390_FEAT_EXTENDED_IMMEDIATE, + S390_FEAT_EXTENDED_TRANSLATION_3, + S390_FEAT_ETF2_ENH, + S390_FEAT_STORE_CLOCK_FAST, + S390_FEAT_MOVE_WITH_OPTIONAL_SPEC, + S390_FEAT_ETF3_ENH, + S390_FEAT_EXTRACT_CPU_TIME, + S390_FEAT_COMPARE_AND_SWAP_AND_STORE, + S390_FEAT_COMPARE_AND_SWAP_AND_STORE_2, + S390_FEAT_GENERAL_INSTRUCTIONS_EXT, + S390_FEAT_EXECUTE_EXT, + S390_FEAT_SET_PROGRAM_PARAMETERS, + S390_FEAT_FLOATING_POINT_SUPPPORT_ENH, + S390_FEAT_STFLE_45, + S390_FEAT_STFLE_49, + S390_FEAT_LOCAL_TLB_CLEARING, + S390_FEAT_INTERLOCKED_ACCESS_2, + S390_FEAT_MSA_EXT_4, + S390_FEAT_MSA_EXT_3, +}; + +/* add all new definitions before this point */ +static uint16_t qemu_MAX[] = { + /* z13+ features */ + S390_FEAT_STFLE_53, + /* generates a dependency warning, leave it out for now */ + S390_FEAT_MSA_EXT_5, +}; + /****** END FEATURE DEFS ******/ #define _YEARS "2016" @@ -627,6 +673,24 @@ static FeatGroupDefSpec FeatGroupDef[] = { FEAT_GROUP_INITIALIZER(MSA_EXT_8), }; +#define QEMU_FEAT_INITIALIZER(_name) \ + { \ + .name = "S390_FEAT_LIST_QEMU_" #_name, \ + .bits = \ + { .data = qemu_##_name, \ + .len = ARRAY_SIZE(qemu_##_name) }, \ + } + +/******************************* + * QEMU (CPU model) features + *******************************/ +static FeatGroupDefSpec QemuFeatDef[] = { + QEMU_FEAT_INITIALIZER(V2_11), + QEMU_FEAT_INITIALIZER(LATEST), + QEMU_FEAT_INITIALIZER(MAX), +}; + + static void set_bits(uint64_t list[], BitSpec bits) { uint32_t i; @@ -684,6 +748,29 @@ static void print_feature_defs(void) } } +static void print_qemu_feature_defs(void) +{ + uint64_t feat[S390_FEAT_MAX / 64 + 1] = {}; + int i, j; + + printf("\n/* QEMU (CPU model) feature list data */\n"); + + /* for now we assume that we only add new features */ + for (i = 0; i < ARRAY_SIZE(QemuFeatDef); i++) { + set_bits(feat, QemuFeatDef[i].bits); + + printf("#define %s\t", QemuFeatDef[i].name); + for (j = 0; j < ARRAY_SIZE(feat); j++) { + printf("0x%016"PRIx64"ULL", feat[j]); + if (j < ARRAY_SIZE(feat) - 1) { + printf(","); + } else { + printf("\n"); + } + } + } +} + static void print_feature_group_defs(void) { int i, j; @@ -721,6 +808,7 @@ int main(int argc, char *argv[]) "#ifndef %s\n#define %s\n", __FILE__, _YEARS, _NAME_H, _NAME_H); print_feature_defs(); print_feature_group_defs(); + print_qemu_feature_defs(); printf("\n#endif\n"); return 0; } |