/*
* QEMU monitor.c for ARM.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include "hw/boards.h"
#include "kvm_arm.h"
#include "qapi/error.h"
#include "qapi/visitor.h"
#include "qapi/qobject-input-visitor.h"
#include "qapi/qapi-commands-machine-target.h"
#include "qapi/qapi-commands-misc-target.h"
#include "qapi/qmp/qerror.h"
#include "qapi/qmp/qdict.h"
#include "qom/qom-qobject.h"
static GICCapability *gic_cap_new(int version)
{
GICCapability *cap = g_new0(GICCapability, 1);
cap->version = version;
/* by default, support none */
cap->emulated = false;
cap->kernel = false;
return cap;
}
static GICCapabilityList *gic_cap_list_add(GICCapabilityList *head,
GICCapability *cap)
{
GICCapabilityList *item = g_new0(GICCapabilityList, 1);
item->value = cap;
item->next = head;
return item;
}
static inline void gic_cap_kvm_probe(GICCapability *v2, GICCapability *v3)
{
#ifdef CONFIG_KVM
int fdarray[3];
if (!kvm_arm_create_scratch_host_vcpu(NULL, fdarray, NULL)) {
return;
}
/* Test KVM GICv2 */
if (kvm_device_supported(fdarray[1], KVM_DEV_TYPE_ARM_VGIC_V2)) {
v2->kernel = true;
}
/* Test KVM GICv3 */
if (kvm_device_supported(fdarray[1], KVM_DEV_TYPE_ARM_VGIC_V3)) {
v3->kernel = true;
}
kvm_arm_destroy_scratch_host_vcpu(fdarray);
#endif
}
GICCapabilityList *qmp_query_gic_capabilities(Error **errp)
{
GICCapabilityList *head = NULL;
GICCapability *v2 = gic_cap_new(2), *v3 = gic_cap_new(3);
v2->emulated = true;
v3->emulated = true;
gic_cap_kvm_probe(v2, v3);
head = gic_cap_list_add(head, v2);
head = gic_cap_list_add(head, v3);
return head;
}
QEMU_BUILD_BUG_ON(ARM_MAX_VQ > 16);
/*
* These are cpu model features we want to advertise. The order here
* matters as this is the order in which qmp_query_cpu_model_expansion
* will attempt to set them. If there are dependencies between features,
* then the order that considers those dependencies must be used.
*/
static const char *cpu_model_advertised_features[] = {
"aarch64", "pmu", "sve",
"sve128", "sve256", "sve384", "sve512",
"sve640", "sve768", "sve896", "sve1024", "sve1152", "sve1280",
"sve1408", "sve1536", "sve1664", "sve1792", "sve1920", "sve2048",
"kvm-no-adjvtime",
NULL
};
CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,
CpuModelInfo *model,
Error **errp)
{
CpuModelExpansionInfo *expansion_info;
const QDict *qdict_in = NULL;
QDict *qdict_out;
ObjectClass *oc;
Object *obj;
const char *name;
int i;
if (type != CPU_MODEL_EXPANSION_TYPE_FULL) {
error_setg(errp, "The requested expansion type is not supported");
return NULL;
}
if (!kvm_enabled() && !strcmp(model->name, "host")) {
error_setg(errp, "The CPU type '%s' requires KVM", model->name);
return NULL;
}
oc = cpu_class_by_name(TYPE_ARM_CPU, model->name);
if (!oc) {
error_setg(errp, "The CPU type '%s' is not a recognized ARM CPU type",
model->name);
return NULL;
}
if (kvm_enabled()) {
bool supported = false;
if (!strcmp(model->name, "host") || !strcmp(model->name, "max")) {
/* These are kvmarm's recommended cpu types */
supported = true;
} else if (current_machine->cpu_type) {
const char *cpu_type = current_machine->cpu_type;
int len = strlen(cpu_type) - strlen(ARM_CPU_TYPE_SUFFIX);
if (strlen(model->name) == len &&
!strncmp(model->name, cpu_type, len)) {
/* KVM is enabled and we're using this type, so it works. */
supported = true;
}
}
if (!supported) {
error_setg(errp, "We cannot guarantee the CPU type '%s' works "
"with KVM on this host", model->name);
return NULL;
}
}
if (model->props) {
qdict_in = qobject_to(QDict, model->props);
if (!qdict_in) {
error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict");
return NULL;
}
}
obj = object_new(object_class_get_name(oc));
if (qdict_in) {
Visitor *visitor;
Error *err = NULL;
visitor = qobject_input_visitor_new(model->props);
if (!visit_start_struct(visitor, NULL, NULL, 0, errp)) {
visit_free(visitor);
object_unref(obj);
return NULL;
}
i = 0;
while ((name = cpu_model_advertised_features[i++]) != NULL) {
if (qdict_get(qdict_in, name)) {
if (!object_property_set(obj, name, visitor, &err)) {
break;
}
}
}
if (!err) {
visit_check_struct(visitor, &err);
}
if (!err) {
arm_cpu_finalize_features(ARM_CPU(obj), &err);
}
visit_end_struct(visitor, NULL);
visit_free(visitor);
if (err) {
object_unref(obj);
error_propagate(errp, err);
return NULL;
}
} else {
arm_cpu_finalize_features(ARM_CPU(obj), &error_abort);
}
expansion_info = g_new0(CpuModelExpansionInfo, 1);
expansion_info->model = g_malloc0(sizeof(*expansion_info->model));
expansion_info->model->name = g_strdup(model->name);
qdict_out = qdict_new();
i = 0;
while ((name = cpu_model_advertised_features[i++]) != NULL) {
ObjectProperty *prop = object_property_find(obj, name, NULL);
if (prop) {
QObject *value;
assert(prop->get);
value = object_property_get_qobject(obj, name, &error_abort);
qdict_put_obj(qdict_out, name, value);
}
}
if (!qdict_size(qdict_out)) {
qobject_unref(qdict_out);
} else {
expansion_info->model->props = QOBJECT(qdict_out);
expansion_info->model->has_props = true;
}
object_unref(obj);
return expansion_info;
}
