31f694b911
Add support for the query-cpu-model-expansion QMP command to LoongArch.
We support query the cpu features.
e.g
la464 and max cpu support LSX/LASX, default enable,
la132 not support LSX/LASX.
1. start with '-cpu max,lasx=off'
(QEMU) query-cpu-model-expansion type=static model={"name":"max"}
{"return": {"model": {"name": "max", "props": {"lasx": false, "lsx": true}}}}
2. start with '-cpu la464,lasx=off'
(QEMU) query-cpu-model-expansion type=static model={"name":"la464"}
{"return": {"model": {"name": "max", "props": {"lasx": false, "lsx": true}}}
3. start with '-cpu la132,lasx=off'
qemu-system-loongarch64: can't apply global la132-loongarch-cpu.lasx=off: Property 'la132-loongarch-cpu.lasx' not found
4. start with '-cpu max,lasx=off' or start with '-cpu la464,lasx=off' query cpu model la132
(QEMU) query-cpu-model-expansion type=static model={"name":"la132"}
{"return": {"model": {"name": "la132"}}}
Acked-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20231020084925.3457084-4-gaosong@loongson.cn>
102 lines
2.8 KiB
C
102 lines
2.8 KiB
C
/*
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* QEMU LoongArch CPU (monitor definitions)
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*
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* SPDX-FileCopyrightText: 2021 Loongson Technology Corporation Limited
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "qapi/qapi-commands-machine-target.h"
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#include "cpu.h"
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#include "qapi/qmp/qerror.h"
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#include "qapi/qmp/qdict.h"
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#include "qapi/qobject-input-visitor.h"
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#include "qom/qom-qobject.h"
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static void loongarch_cpu_add_definition(gpointer data, gpointer user_data)
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{
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ObjectClass *oc = data;
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CpuDefinitionInfoList **cpu_list = user_data;
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CpuDefinitionInfo *info = g_new0(CpuDefinitionInfo, 1);
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const char *typename = object_class_get_name(oc);
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info->name = g_strndup(typename,
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strlen(typename) - strlen("-" TYPE_LOONGARCH_CPU));
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info->q_typename = g_strdup(typename);
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QAPI_LIST_PREPEND(*cpu_list, info);
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}
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CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp)
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{
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CpuDefinitionInfoList *cpu_list = NULL;
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GSList *list;
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list = object_class_get_list(TYPE_LOONGARCH_CPU, false);
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g_slist_foreach(list, loongarch_cpu_add_definition, &cpu_list);
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g_slist_free(list);
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return cpu_list;
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}
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static const char *cpu_model_advertised_features[] = {
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"lsx", "lasx", NULL
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};
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CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,
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CpuModelInfo *model,
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Error **errp)
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{
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CpuModelExpansionInfo *expansion_info;
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QDict *qdict_out;
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ObjectClass *oc;
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Object *obj;
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const char *name;
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int i;
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if (type != CPU_MODEL_EXPANSION_TYPE_STATIC) {
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error_setg(errp, "The requested expansion type is not supported");
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return NULL;
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}
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oc = cpu_class_by_name(TYPE_LOONGARCH_CPU, model->name);
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if (!oc) {
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error_setg(errp, "The CPU type '%s' is not a recognized LoongArch CPU type",
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model->name);
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return NULL;
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}
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obj = object_new(object_class_get_name(oc));
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expansion_info = g_new0(CpuModelExpansionInfo, 1);
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expansion_info->model = g_malloc0(sizeof(*expansion_info->model));
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expansion_info->model->name = g_strdup(model->name);
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qdict_out = qdict_new();
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i = 0;
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while ((name = cpu_model_advertised_features[i++]) != NULL) {
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ObjectProperty *prop = object_property_find(obj, name);
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if (prop) {
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QObject *value;
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assert(prop->get);
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value = object_property_get_qobject(obj, name, &error_abort);
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qdict_put_obj(qdict_out, name, value);
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}
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}
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if (!qdict_size(qdict_out)) {
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qobject_unref(qdict_out);
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} else {
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expansion_info->model->props = QOBJECT(qdict_out);
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}
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object_unref(obj);
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return expansion_info;
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}
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