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qemu/target-s390x/cpu_models.c
David Hildenbrand ad5afd07b6 s390x/cpumodel: store the CPU model in the CPU instance 
A CPU model consists of a CPU definition, to which delta changes are
applied - features added or removed (e.g. z13-base,vx=on). In addition,
certain properties (e.g. cpu id) can later on change during migration
but belong into the CPU model. This data will later be filled from the
host model in the KVM case.

Therefore, store the configured CPU model inside the CPU instance, so
we can later on perform delta changes using properties.

For the "qemu" model, we emulate in TCG a z900. "host" will be
uninitialized (cpu->model == NULL) unless we have CPU model support in KVM
later on. The other models are all initialized from their definitions.
Only the "host" model can have a cpu->model == NULL.

Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Message-Id: <20160905085244.99980-10-dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-09-06 17:06:50 +02:00

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/*
* 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 "gen-features.h"
#include "qapi/error.h"
#ifndef CONFIG_USER_ONLY
#include "sysemu/arch_init.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 definiton list in order of release. For now, base features of a
* following release are always a subset of base features of the previous
* release. Same is correct for the other feature sets.
* A BC release always follows the corresponding EC release.
*/
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"),
};
struct S390PrintCpuListInfo {
FILE *f;
fprintf_function print;
};
static void print_cpu_model_list(ObjectClass *klass, void *opaque)
{
struct S390PrintCpuListInfo *info = opaque;
S390CPUClass *scc = S390_CPU_CLASS(klass);
char *name = g_strdup(object_class_get_name(klass));
const char *details = "";
if (scc->is_static) {
details = "(static, migration-safe)";
} else if (scc->is_migration_safe) {
details = "(migration-safe)";
}
/* strip off the -s390-cpu */
g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0;
(*info->print)(info->f, "s390 %-15s %-35s %s\n", name, scc->desc,
details);
g_free(name);
}
void s390_cpu_list(FILE *f, fprintf_function print)
{
struct S390PrintCpuListInfo info = {
.f = f,
.print = print,
};
object_class_foreach(print_cpu_model_list, TYPE_S390_CPU, false, &info);
}
#ifndef CONFIG_USER_ONLY
static void create_cpu_model_list(ObjectClass *klass, void *opaque)
{
CpuDefinitionInfoList **cpu_list = opaque;
CpuDefinitionInfoList *entry;
CpuDefinitionInfo *info;
char *name = g_strdup(object_class_get_name(klass));
S390CPUClass *scc = S390_CPU_CLASS(klass);
/* strip off the -s390-cpu */
g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0;
info = g_malloc0(sizeof(*info));
info->name = name;
info->has_migration_safe = true;
info->migration_safe = scc->is_migration_safe;
info->q_static = scc->is_static;
entry = g_malloc0(sizeof(*entry));
entry->value = info;
entry->next = *cpu_list;
*cpu_list = entry;
}
CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp)
{
CpuDefinitionInfoList *list = NULL;
object_class_foreach(create_cpu_model_list, TYPE_S390_CPU, false, &list);
return list;
}
#endif
void s390_realize_cpu_model(CPUState *cs, Error **errp)
{
S390CPUClass *xcc = S390_CPU_GET_CLASS(cs);
if (xcc->kvm_required && !kvm_enabled()) {
error_setg(errp, "CPU definition requires KVM");
return;
}
}
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);
}
}
#ifdef CONFIG_KVM
static void s390_host_cpu_model_initfn(Object *obj)
{
}
#endif
static void s390_qemu_cpu_model_initfn(Object *obj)
{
S390CPU *cpu = S390_CPU(obj);
cpu->model = g_malloc0(sizeof(*cpu->model));
/* TCG emulates a z900 */
cpu->model->def = &s390_cpu_defs[0];
bitmap_copy(cpu->model->features, cpu->model->def->default_feat,
S390_FEAT_MAX);
}
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)
{
object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe,
NULL, NULL);
object_class_property_add_bool(oc, "static", get_is_static,
NULL, NULL);
object_class_property_add_str(oc, "description", get_description, NULL,
NULL);
}
#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());
}
#define S390_CPU_TYPE_SUFFIX "-" TYPE_S390_CPU
#define S390_CPU_TYPE_NAME(name) (name S390_CPU_TYPE_SUFFIX)
/* 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,
};
#ifdef CONFIG_KVM
static const TypeInfo host_s390_cpu_type_info = {
.name = S390_CPU_TYPE_NAME("host"),
.parent = TYPE_S390_CPU,
.instance_init = s390_host_cpu_model_initfn,
.instance_finalize = s390_cpu_model_finalize,
.class_init = s390_host_cpu_model_class_init,
};
#endif
static void register_types(void)
{
int i;
/* init all bitmaps from gnerated data initially */
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);
}
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);
#ifdef CONFIG_KVM
type_register_static(&host_s390_cpu_type_info);
#endif
}
type_init(register_types)
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