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/qbool.h"
  30 #include "qapi/qmp/qdict.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_obj_add_named_feats_qdict(Object *obj, QDict *qdict_out)
 102 {
 103     const RISCVCPUMultiExtConfig *named_cfg;
 104     RISCVCPU *cpu = RISCV_CPU(obj);
 105     QObject *value;
 106     bool flag_val;
 107
 108     for (int i = 0; riscv_cpu_named_features[i].name != NULL; i++) {
 109         named_cfg = &riscv_cpu_named_features[i];
 110         flag_val = isa_ext_is_enabled(cpu, named_cfg->offset);
 111         value = QOBJECT(qbool_from_bool(flag_val));
 112
 113         qdict_put_obj(qdict_out, named_cfg->name, value);
 114     }
 115 }
 116
 117 static void riscv_obj_add_profiles_qdict(Object *obj, QDict *qdict_out)
 118 {
 119     RISCVCPUProfile *profile;
 120     QObject *value;
 121
 122     for (int i = 0; riscv_profiles[i] != NULL; i++) {
 123         profile = riscv_profiles[i];
 124         value = QOBJECT(qbool_from_bool(profile->enabled));
 125
 126         qdict_put_obj(qdict_out, profile->name, value);
 127     }
 128 }
 129
 130 static void riscv_cpuobj_validate_qdict_in(Object *obj, QObject *props,
 131                                            const char *props_arg_name,
 132                                            Error **errp)
 133 {
 134     const QDict *qdict_in;
 135     const QDictEntry *qe;
 136     Visitor *visitor;
 137     Error *local_err = NULL;
 138
 139     visitor = qobject_input_visitor_new(props);
 140     if (!visit_start_struct(visitor, props_arg_name, NULL, 0, &local_err)) {
 141         goto err;
 142     }
 143
 144     qdict_in = qobject_to(QDict, props);
 145     for (qe = qdict_first(qdict_in); qe; qe = qdict_next(qdict_in, qe)) {
 146         object_property_find_err(obj, qe->key, &local_err);
 147         if (local_err) {
 148             goto err;
 149         }
 150
 151         object_property_set(obj, qe->key, visitor, &local_err);
 152         if (local_err) {
 153             goto err;
 154         }
 155     }
 156
 157     visit_check_struct(visitor, &local_err);
 158     if (local_err) {
 159         goto err;
 160     }
 161
 162     visit_end_struct(visitor, NULL);
 163
 164 err:
 165     error_propagate(errp, local_err);
 166     visit_free(visitor);
 167 }
 168
 169 CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,
 170                                                      CpuModelInfo *model,
 171                                                      Error **errp)
 172 {
 173     CpuModelExpansionInfo *expansion_info;
 174     QDict *qdict_out;
 175     ObjectClass *oc;
 176     Object *obj;
 177     Error *local_err = NULL;
 178
 179     if (type != CPU_MODEL_EXPANSION_TYPE_FULL) {
 180         error_setg(errp, "The requested expansion type is not supported");
 181         return NULL;
 182     }
 183
 184     oc = cpu_class_by_name(TYPE_RISCV_CPU, model->name);
 185     if (!oc) {
 186         error_setg(errp, "The CPU type '%s' is not a known RISC-V CPU type",
 187                    model->name);
 188         return NULL;
 189     }
 190
 191     obj = object_new(object_class_get_name(oc));
 192
 193     riscv_check_if_cpu_available(RISCV_CPU(obj), &local_err);
 194     if (local_err != NULL) {
 195         error_propagate(errp, local_err);
 196         object_unref(obj);
 197         return NULL;
 198     }
 199
 200     if (model->props) {
 201         riscv_cpuobj_validate_qdict_in(obj, model->props, "model.props",
 202                                        &local_err);
 203         if (local_err) {
 204             error_propagate(errp, local_err);
 205             object_unref(obj);
 206             return NULL;
 207         }
 208     }
 209
 210     riscv_cpu_finalize_features(RISCV_CPU(obj), &local_err);
 211     if (local_err) {
 212         error_propagate(errp, local_err);
 213         object_unref(obj);
 214         return NULL;
 215     }
 216
 217     expansion_info = g_new0(CpuModelExpansionInfo, 1);
 218     expansion_info->model = g_malloc0(sizeof(*expansion_info->model));
 219     expansion_info->model->name = g_strdup(model->name);
 220
 221     qdict_out = qdict_new();
 222
 223     riscv_obj_add_multiext_props(obj, qdict_out, riscv_cpu_extensions);
 224     riscv_obj_add_multiext_props(obj, qdict_out, riscv_cpu_experimental_exts);
 225     riscv_obj_add_multiext_props(obj, qdict_out, riscv_cpu_vendor_exts);
 226     riscv_obj_add_named_feats_qdict(obj, qdict_out);
 227     riscv_obj_add_profiles_qdict(obj, qdict_out);
 228
 229     /* Add our CPU boolean options too */
 230     riscv_obj_add_qdict_prop(obj, qdict_out, "mmu");
 231     riscv_obj_add_qdict_prop(obj, qdict_out, "pmp");
 232
 233     if (!qdict_size(qdict_out)) {
 234         qobject_unref(qdict_out);
 235     } else {
 236         expansion_info->model->props = QOBJECT(qdict_out);
 237     }
 238
 239     object_unref(obj);
 240
 241     return expansion_info;
 242 }