target/riscv/riscv-qmp-cmds.c

   1 /*
   2  * QEMU CPU QMP commands for RISC-V
   3  *
   4  * Copyright (c) 2023 Ventana Micro Systems Inc.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 #include "qemu/osdep.h"
  26
  27 #include "qapi/error.h"
  28 #include "qapi/qapi-commands-machine-target.h"
  29 #include "qapi/qmp/qdict.h"
  30 #include "qapi/qmp/qerror.h"
  31 #include "qapi/qobject-input-visitor.h"
  32 #include "qapi/visitor.h"
  33 #include "qom/qom-qobject.h"
  34 #include "sysemu/kvm.h"
  35 #include "sysemu/tcg.h"
  36 #include "cpu-qom.h"
  37 #include "cpu.h"
  38
  39 static void riscv_cpu_add_definition(gpointer data, gpointer user_data)
  40 {
  41     ObjectClass *oc = data;
  42     CpuDefinitionInfoList **cpu_list = user_data;
  43     CpuDefinitionInfo *info = g_malloc0(sizeof(*info));
  44     const char *typename = object_class_get_name(oc);
  45     ObjectClass *dyn_class;
  46
  47     info->name = cpu_model_from_type(typename);
  48     info->q_typename = g_strdup(typename);
  49
  50     dyn_class = object_class_dynamic_cast(oc, TYPE_RISCV_DYNAMIC_CPU);
  51     info->q_static = dyn_class == NULL;
  52
  53     QAPI_LIST_PREPEND(*cpu_list, info);
  54 }
  55
  56 CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp)
  57 {
  58     CpuDefinitionInfoList *cpu_list = NULL;
  59     GSList *list = object_class_get_list(TYPE_RISCV_CPU, false);
  60
  61     g_slist_foreach(list, riscv_cpu_add_definition, &cpu_list);
  62     g_slist_free(list);
  63
  64     return cpu_list;
  65 }
  66
  67 static void riscv_check_if_cpu_available(RISCVCPU *cpu, Error **errp)
  68 {
  69     if (!riscv_cpu_accelerator_compatible(cpu)) {
  70         g_autofree char *name = riscv_cpu_get_name(cpu);
  71         const char *accel = kvm_enabled() ? "kvm" : "tcg";
  72
  73         error_setg(errp, "'%s' CPU not available with %s", name, accel);
  74         return;
  75     }
  76 }
  77
  78 static void riscv_obj_add_qdict_prop(Object *obj, QDict *qdict_out,
  79                                      const char *name)
  80 {
  81     ObjectProperty *prop = object_property_find(obj, name);
  82
  83     if (prop) {
  84         QObject *value;
  85
  86         assert(prop->get);
  87         value = object_property_get_qobject(obj, name, &error_abort);
  88
  89         qdict_put_obj(qdict_out, name, value);
  90     }
  91 }
  92
  93 static void riscv_obj_add_multiext_props(Object *obj, QDict *qdict_out,
  94                                          const RISCVCPUMultiExtConfig *arr)
  95 {
  96     for (int i = 0; arr[i].name != NULL; i++) {
  97         riscv_obj_add_qdict_prop(obj, qdict_out, arr[i].name);
  98     }
  99 }
 100
 101 static void riscv_cpuobj_validate_qdict_in(Object *obj, QObject *props,
 102                                            const QDict *qdict_in,
 103                                            Error **errp)
 104 {
 105     const QDictEntry *qe;
 106     Visitor *visitor;
 107     Error *local_err = NULL;
 108
 109     visitor = qobject_input_visitor_new(props);
 110     if (!visit_start_struct(visitor, NULL, NULL, 0, &local_err)) {
 111         goto err;
 112     }
 113
 114     for (qe = qdict_first(qdict_in); qe; qe = qdict_next(qdict_in, qe)) {
 115         object_property_find_err(obj, qe->key, &local_err);
 116         if (local_err) {
 117             goto err;
 118         }
 119
 120         object_property_set(obj, qe->key, visitor, &local_err);
 121         if (local_err) {
 122             goto err;
 123         }
 124     }
 125
 126     visit_check_struct(visitor, &local_err);
 127     if (local_err) {
 128         goto err;
 129     }
 130
 131     riscv_cpu_finalize_features(RISCV_CPU(obj), &local_err);
 132     if (local_err) {
 133         goto err;
 134     }
 135
 136     visit_end_struct(visitor, NULL);
 137
 138 err:
 139     error_propagate(errp, local_err);
 140     visit_free(visitor);
 141 }
 142
 143 CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,
 144                                                      CpuModelInfo *model,
 145                                                      Error **errp)
 146 {
 147     CpuModelExpansionInfo *expansion_info;
 148     const QDict *qdict_in = NULL;
 149     QDict *qdict_out;
 150     ObjectClass *oc;
 151     Object *obj;
 152     Error *local_err = NULL;
 153
 154     if (type != CPU_MODEL_EXPANSION_TYPE_FULL) {
 155         error_setg(errp, "The requested expansion type is not supported");
 156         return NULL;
 157     }
 158
 159     oc = cpu_class_by_name(TYPE_RISCV_CPU, model->name);
 160     if (!oc) {
 161         error_setg(errp, "The CPU type '%s' is not a known RISC-V CPU type",
 162                    model->name);
 163         return NULL;
 164     }
 165
 166     if (model->props) {
 167         qdict_in = qobject_to(QDict, model->props);
 168         if (!qdict_in) {
 169             error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict");
 170             return NULL;
 171         }
 172     }
 173
 174     obj = object_new(object_class_get_name(oc));
 175
 176     riscv_check_if_cpu_available(RISCV_CPU(obj), &local_err);
 177     if (local_err != NULL) {
 178         error_propagate(errp, local_err);
 179         object_unref(obj);
 180         return NULL;
 181     }
 182
 183     if (qdict_in) {
 184         riscv_cpuobj_validate_qdict_in(obj, model->props, qdict_in,
 185                                        &local_err);
 186         if (local_err) {
 187             error_propagate(errp, local_err);
 188             object_unref(obj);
 189             return NULL;
 190         }
 191     }
 192
 193     expansion_info = g_new0(CpuModelExpansionInfo, 1);
 194     expansion_info->model = g_malloc0(sizeof(*expansion_info->model));
 195     expansion_info->model->name = g_strdup(model->name);
 196
 197     qdict_out = qdict_new();
 198
 199     riscv_obj_add_multiext_props(obj, qdict_out, riscv_cpu_extensions);
 200     riscv_obj_add_multiext_props(obj, qdict_out, riscv_cpu_experimental_exts);
 201     riscv_obj_add_multiext_props(obj, qdict_out, riscv_cpu_vendor_exts);
 202
 203     /* Add our CPU boolean options too */
 204     riscv_obj_add_qdict_prop(obj, qdict_out, "mmu");
 205     riscv_obj_add_qdict_prop(obj, qdict_out, "pmp");
 206
 207     if (!qdict_size(qdict_out)) {
 208         qobject_unref(qdict_out);
 209     } else {
 210         expansion_info->model->props = QOBJECT(qdict_out);
 211     }
 212
 213     object_unref(obj);
 214
 215     return expansion_info;
 216 }