blob: 227ac021f62fec8c2922963364a142a9d8c65d24 [file] [log] [blame]
/*
* i386 CPUID, CPU class, definitions, models: sysemu-only code
*
* Copyright (c) 2003 Fabrice Bellard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "cpu.h"
#include "qapi/error.h"
#include "qapi/qapi-visit-run-state.h"
#include "qapi/qmp/qdict.h"
#include "qapi/qobject-input-visitor.h"
#include "qom/qom-qobject.h"
#include "qapi/qapi-commands-machine-target.h"
#include "cpu-internal.h"
/* Return a QDict containing keys for all properties that can be included
* in static expansion of CPU models. All properties set by x86_cpu_load_model()
* must be included in the dictionary.
*/
static QDict *x86_cpu_static_props(void)
{
FeatureWord w;
int i;
static const char *props[] = {
"min-level",
"min-xlevel",
"family",
"model",
"stepping",
"model-id",
"vendor",
"lmce",
NULL,
};
static QDict *d;
if (d) {
return d;
}
d = qdict_new();
for (i = 0; props[i]; i++) {
qdict_put_null(d, props[i]);
}
for (w = 0; w < FEATURE_WORDS; w++) {
FeatureWordInfo *fi = &feature_word_info[w];
int bit;
for (bit = 0; bit < 64; bit++) {
if (!fi->feat_names[bit]) {
continue;
}
qdict_put_null(d, fi->feat_names[bit]);
}
}
return d;
}
/* Add an entry to @props dict, with the value for property. */
static void x86_cpu_expand_prop(X86CPU *cpu, QDict *props, const char *prop)
{
QObject *value = object_property_get_qobject(OBJECT(cpu), prop,
&error_abort);
qdict_put_obj(props, prop, value);
}
/* Convert CPU model data from X86CPU object to a property dictionary
* that can recreate exactly the same CPU model.
*/
static void x86_cpu_to_dict(X86CPU *cpu, QDict *props)
{
QDict *sprops = x86_cpu_static_props();
const QDictEntry *e;
for (e = qdict_first(sprops); e; e = qdict_next(sprops, e)) {
const char *prop = qdict_entry_key(e);
x86_cpu_expand_prop(cpu, props, prop);
}
}
/* Convert CPU model data from X86CPU object to a property dictionary
* that can recreate exactly the same CPU model, including every
* writable QOM property.
*/
static void x86_cpu_to_dict_full(X86CPU *cpu, QDict *props)
{
ObjectPropertyIterator iter;
ObjectProperty *prop;
object_property_iter_init(&iter, OBJECT(cpu));
while ((prop = object_property_iter_next(&iter))) {
/* skip read-only or write-only properties */
if (!prop->get || !prop->set) {
continue;
}
/* "hotplugged" is the only property that is configurable
* on the command-line but will be set differently on CPUs
* created using "-cpu ... -smp ..." and by CPUs created
* on the fly by x86_cpu_from_model() for querying. Skip it.
*/
if (!strcmp(prop->name, "hotplugged")) {
continue;
}
x86_cpu_expand_prop(cpu, props, prop->name);
}
}
static void object_apply_props(Object *obj, QObject *props,
const char *props_arg_name, Error **errp)
{
Visitor *visitor;
QDict *qdict;
const QDictEntry *prop;
visitor = qobject_input_visitor_new(props);
if (!visit_start_struct(visitor, props_arg_name, NULL, 0, errp)) {
visit_free(visitor);
return;
}
qdict = qobject_to(QDict, props);
for (prop = qdict_first(qdict); prop; prop = qdict_next(qdict, prop)) {
if (!object_property_set(obj, qdict_entry_key(prop),
visitor, errp)) {
goto out;
}
}
visit_check_struct(visitor, errp);
out:
visit_end_struct(visitor, NULL);
visit_free(visitor);
}
/* Create X86CPU object according to model+props specification */
static X86CPU *x86_cpu_from_model(const char *model, QObject *props,
const char *props_arg_name, Error **errp)
{
X86CPU *xc = NULL;
X86CPUClass *xcc;
Error *err = NULL;
xcc = X86_CPU_CLASS(cpu_class_by_name(TYPE_X86_CPU, model));
if (xcc == NULL) {
error_setg(&err, "CPU model '%s' not found", model);
goto out;
}
xc = X86_CPU(object_new_with_class(OBJECT_CLASS(xcc)));
if (props) {
object_apply_props(OBJECT(xc), props, props_arg_name, &err);
if (err) {
goto out;
}
}
x86_cpu_expand_features(xc, &err);
if (err) {
goto out;
}
out:
if (err) {
error_propagate(errp, err);
object_unref(OBJECT(xc));
xc = NULL;
}
return xc;
}
CpuModelExpansionInfo *
qmp_query_cpu_model_expansion(CpuModelExpansionType type,
CpuModelInfo *model,
Error **errp)
{
X86CPU *xc = NULL;
Error *err = NULL;
CpuModelExpansionInfo *ret = g_new0(CpuModelExpansionInfo, 1);
QDict *props = NULL;
const char *base_name;
xc = x86_cpu_from_model(model->name, model->props, "model.props", &err);
if (err) {
goto out;
}
props = qdict_new();
ret->model = g_new0(CpuModelInfo, 1);
ret->model->props = QOBJECT(props);
switch (type) {
case CPU_MODEL_EXPANSION_TYPE_STATIC:
/* Static expansion will be based on "base" only */
base_name = "base";
x86_cpu_to_dict(xc, props);
break;
case CPU_MODEL_EXPANSION_TYPE_FULL:
/* As we don't return every single property, full expansion needs
* to keep the original model name+props, and add extra
* properties on top of that.
*/
base_name = model->name;
x86_cpu_to_dict_full(xc, props);
break;
default:
error_setg(&err, "Unsupported expansion type");
goto out;
}
x86_cpu_to_dict(xc, props);
ret->model->name = g_strdup(base_name);
out:
object_unref(OBJECT(xc));
if (err) {
error_propagate(errp, err);
qapi_free_CpuModelExpansionInfo(ret);
ret = NULL;
}
return ret;
}
void cpu_clear_apic_feature(CPUX86State *env)
{
env->features[FEAT_1_EDX] &= ~CPUID_APIC;
}
void cpu_set_apic_feature(CPUX86State *env)
{
env->features[FEAT_1_EDX] |= CPUID_APIC;
}
bool cpu_has_x2apic_feature(CPUX86State *env)
{
return env->features[FEAT_1_ECX] & CPUID_EXT_X2APIC;
}
bool cpu_is_bsp(X86CPU *cpu)
{
return cpu_get_apic_base(cpu->apic_state) & MSR_IA32_APICBASE_BSP;
}
/* TODO: remove me, when reset over QOM tree is implemented */
void x86_cpu_machine_reset_cb(void *opaque)
{
X86CPU *cpu = opaque;
cpu_reset(CPU(cpu));
}
GuestPanicInformation *x86_cpu_get_crash_info(CPUState *cs)
{
X86CPU *cpu = X86_CPU(cs);
CPUX86State *env = &cpu->env;
GuestPanicInformation *panic_info = NULL;
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_CRASH)) {
panic_info = g_new0(GuestPanicInformation, 1);
panic_info->type = GUEST_PANIC_INFORMATION_TYPE_HYPER_V;
assert(HV_CRASH_PARAMS >= 5);
panic_info->u.hyper_v.arg1 = env->msr_hv_crash_params[0];
panic_info->u.hyper_v.arg2 = env->msr_hv_crash_params[1];
panic_info->u.hyper_v.arg3 = env->msr_hv_crash_params[2];
panic_info->u.hyper_v.arg4 = env->msr_hv_crash_params[3];
panic_info->u.hyper_v.arg5 = env->msr_hv_crash_params[4];
}
return panic_info;
}
void x86_cpu_get_crash_info_qom(Object *obj, Visitor *v,
const char *name, void *opaque,
Error **errp)
{
CPUState *cs = CPU(obj);
GuestPanicInformation *panic_info;
if (!cs->crash_occurred) {
error_setg(errp, "No crash occurred");
return;
}
panic_info = x86_cpu_get_crash_info(cs);
if (panic_info == NULL) {
error_setg(errp, "No crash information");
return;
}
visit_type_GuestPanicInformation(v, "crash-information", &panic_info,
errp);
qapi_free_GuestPanicInformation(panic_info);
}