| 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.h" |
| 29 | #include "qobject/qbool.h" |
| 30 | #include "qobject/qdict.h" |
| 31 | #include "qapi/qobject-input-visitor.h" |
| 32 | #include "qapi/visitor.h" |
| 33 | #include "qom/qom-qobject.h" |
| 34 | #include "system/kvm.h" |
| 35 | #include "system/tcg.h" |
| 36 | #include "cpu-qom.h" |
| 37 | #include "cpu.h" |
| 38 | #include "target/riscv/tcg/csr.h" |
| 39 | |
| 40 | static void riscv_cpu_add_definition(gpointer data, gpointer user_data) |
| 41 | { |
| 42 | ObjectClass *oc = data; |
| 43 | CpuDefinitionInfoList **cpu_list = user_data; |
| 44 | CpuDefinitionInfo *info = g_malloc0(sizeof(*info)); |
| 45 | const char *typename = object_class_get_name(oc); |
| 46 | ObjectClass *dyn_class; |
| 47 | |
| 48 | info->name = cpu_model_from_type(typename); |
| 49 | info->q_typename = g_strdup(typename); |
| 50 | |
| 51 | dyn_class = object_class_dynamic_cast(oc, TYPE_RISCV_DYNAMIC_CPU); |
| 52 | info->q_static = dyn_class == NULL; |
| 53 | |
| 54 | QAPI_LIST_PREPEND(*cpu_list, info); |
| 55 | } |
| 56 | |
| 57 | CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp) |
| 58 | { |
| 59 | CpuDefinitionInfoList *cpu_list = NULL; |
| 60 | GSList *list = object_class_get_list(TYPE_RISCV_CPU, false); |
| 61 | |
| 62 | g_slist_foreach(list, riscv_cpu_add_definition, &cpu_list); |
| 63 | g_slist_free(list); |
| 64 | |
| 65 | return cpu_list; |
| 66 | } |
| 67 | |
| 68 | static void riscv_check_if_cpu_available(RISCVCPU *cpu, Error **errp) |
| 69 | { |
| 70 | if (!riscv_cpu_accelerator_compatible(cpu)) { |
| 71 | g_autofree char *name = riscv_cpu_get_name(cpu); |
| 72 | const char *accel = kvm_enabled() ? "kvm" : "tcg"; |
| 73 | |
| 74 | error_setg(errp, "'%s' CPU not available with %s", name, accel); |
| 75 | return; |
| 76 | } |
| 77 | } |
| 78 | |
| 79 | static void riscv_obj_add_qdict_prop(Object *obj, QDict *qdict_out, |
| 80 | const char *name) |
| 81 | { |
| 82 | ObjectProperty *prop = object_property_find(obj, name); |
| 83 | |
| 84 | if (prop) { |
| 85 | QObject *value; |
| 86 | |
| 87 | assert(prop->get); |
| 88 | value = object_property_get_qobject(obj, name, &error_abort); |
| 89 | |
| 90 | qdict_put_obj(qdict_out, name, value); |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | static void riscv_obj_add_multiext_props(Object *obj, QDict *qdict_out) |
| 95 | { |
| 96 | const RISCVIsaExtData *edata; |
| 97 | |
| 98 | for (edata = isa_edata_arr; edata && edata->name; edata++) { |
| 99 | if (edata->prop_name) { |
| 100 | riscv_obj_add_qdict_prop(obj, qdict_out, edata->prop_name); |
| 101 | } |
| 102 | } |
| 103 | } |
| 104 | |
| 105 | static void riscv_obj_add_profiles_qdict(Object *obj, QDict *qdict_out) |
| 106 | { |
| 107 | RISCVCPUProfile *profile; |
| 108 | QObject *value; |
| 109 | |
| 110 | for (int i = 0; riscv_profiles[i] != NULL; i++) { |
| 111 | profile = riscv_profiles[i]; |
| 112 | value = QOBJECT(qbool_from_bool(profile->present)); |
| 113 | |
| 114 | qdict_put_obj(qdict_out, profile->name, value); |
| 115 | } |
| 116 | } |
| 117 | |
| 118 | static void riscv_cpuobj_validate_qdict_in(Object *obj, QObject *props, |
| 119 | const char *props_arg_name, |
| 120 | Error **errp) |
| 121 | { |
| 122 | const QDict *qdict_in; |
| 123 | const QDictEntry *qe; |
| 124 | Visitor *visitor; |
| 125 | Error *local_err = NULL; |
| 126 | |
| 127 | visitor = qobject_input_visitor_new(props); |
| 128 | if (!visit_start_struct(visitor, props_arg_name, NULL, 0, &local_err)) { |
| 129 | goto err; |
| 130 | } |
| 131 | |
| 132 | qdict_in = qobject_to(QDict, props); |
| 133 | for (qe = qdict_first(qdict_in); qe; qe = qdict_next(qdict_in, qe)) { |
| 134 | object_property_find_err(obj, qe->key, &local_err); |
| 135 | if (local_err) { |
| 136 | goto err; |
| 137 | } |
| 138 | |
| 139 | object_property_set(obj, qe->key, visitor, &local_err); |
| 140 | if (local_err) { |
| 141 | goto err; |
| 142 | } |
| 143 | } |
| 144 | |
| 145 | visit_check_struct(visitor, &local_err); |
| 146 | if (local_err) { |
| 147 | goto err; |
| 148 | } |
| 149 | |
| 150 | visit_end_struct(visitor, NULL); |
| 151 | |
| 152 | err: |
| 153 | error_propagate(errp, local_err); |
| 154 | visit_free(visitor); |
| 155 | } |
| 156 | |
| 157 | CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type, |
| 158 | CpuModelInfo *model, |
| 159 | Error **errp) |
| 160 | { |
| 161 | CpuModelExpansionInfo *expansion_info; |
| 162 | QDict *qdict_out; |
| 163 | ObjectClass *oc; |
| 164 | Object *obj; |
| 165 | Error *local_err = NULL; |
| 166 | |
| 167 | if (type != CPU_MODEL_EXPANSION_TYPE_FULL) { |
| 168 | error_setg(errp, "The requested expansion type is not supported"); |
| 169 | return NULL; |
| 170 | } |
| 171 | |
| 172 | oc = cpu_class_by_name(TYPE_RISCV_CPU, model->name); |
| 173 | if (!oc) { |
| 174 | error_setg(errp, "The CPU type '%s' is not a known RISC-V CPU type", |
| 175 | model->name); |
| 176 | return NULL; |
| 177 | } |
| 178 | |
| 179 | obj = object_new(object_class_get_name(oc)); |
| 180 | |
| 181 | riscv_check_if_cpu_available(RISCV_CPU(obj), &local_err); |
| 182 | if (local_err != NULL) { |
| 183 | error_propagate(errp, local_err); |
| 184 | object_unref(obj); |
| 185 | return NULL; |
| 186 | } |
| 187 | |
| 188 | if (model->props) { |
| 189 | riscv_cpuobj_validate_qdict_in(obj, model->props, "model.props", |
| 190 | &local_err); |
| 191 | if (local_err) { |
| 192 | error_propagate(errp, local_err); |
| 193 | object_unref(obj); |
| 194 | return NULL; |
| 195 | } |
| 196 | } |
| 197 | |
| 198 | riscv_cpu_finalize_features(RISCV_CPU(obj), &local_err); |
| 199 | if (local_err) { |
| 200 | error_propagate(errp, local_err); |
| 201 | object_unref(obj); |
| 202 | return NULL; |
| 203 | } |
| 204 | |
| 205 | expansion_info = g_new0(CpuModelExpansionInfo, 1); |
| 206 | expansion_info->model = g_malloc0(sizeof(*expansion_info->model)); |
| 207 | expansion_info->model->name = g_strdup(model->name); |
| 208 | |
| 209 | qdict_out = qdict_new(); |
| 210 | |
| 211 | riscv_obj_add_multiext_props(obj, qdict_out); |
| 212 | riscv_obj_add_profiles_qdict(obj, qdict_out); |
| 213 | |
| 214 | /* Add our CPU boolean options too */ |
| 215 | riscv_obj_add_qdict_prop(obj, qdict_out, "mmu"); |
| 216 | riscv_obj_add_qdict_prop(obj, qdict_out, "pmp"); |
| 217 | |
| 218 | if (!qdict_size(qdict_out)) { |
| 219 | qobject_unref(qdict_out); |
| 220 | } else { |
| 221 | expansion_info->model->props = QOBJECT(qdict_out); |
| 222 | } |
| 223 | |
| 224 | object_unref(obj); |
| 225 | |
| 226 | return expansion_info; |
| 227 | } |