| 1 | /* |
| 2 | * QEMU monitor.c for ARM. |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 5 | * of this software and associated documentation files (the "Software"), to deal |
| 6 | * in the Software without restriction, including without limitation the rights |
| 7 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 8 | * copies of the Software, and to permit persons to whom the Software is |
| 9 | * furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice shall be included in |
| 12 | * all copies or substantial portions of the Software. |
| 13 | * |
| 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 17 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 19 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 20 | * THE SOFTWARE. |
| 21 | */ |
| 22 | |
| 23 | #include "qemu/osdep.h" |
| 24 | #include "qemu/target-info.h" |
| 25 | #include "hw/core/boards.h" |
| 26 | #include "kvm_arm.h" |
| 27 | #include "qapi/error.h" |
| 28 | #include "qapi/visitor.h" |
| 29 | #include "qapi/qobject-input-visitor.h" |
| 30 | #include "qapi/qapi-commands-machine.h" |
| 31 | #include "qapi/qapi-commands-misc-arm.h" |
| 32 | #include "qobject/qdict.h" |
| 33 | #include "qom/qom-qobject.h" |
| 34 | #include "cpu.h" |
| 35 | |
| 36 | static GICCapability *gic_cap_new(int version) |
| 37 | { |
| 38 | GICCapability *cap = g_new0(GICCapability, 1); |
| 39 | cap->version = version; |
| 40 | /* by default, support none */ |
| 41 | cap->emulated = false; |
| 42 | cap->kernel = false; |
| 43 | return cap; |
| 44 | } |
| 45 | |
| 46 | GICCapabilityList *qmp_query_gic_capabilities(Error **errp) |
| 47 | { |
| 48 | GICCapabilityList *head = NULL; |
| 49 | GICCapability *v2 = gic_cap_new(2), *v3 = gic_cap_new(3); |
| 50 | |
| 51 | v2->emulated = true; |
| 52 | v3->emulated = true; |
| 53 | |
| 54 | if (kvm_enabled()) { |
| 55 | arm_gic_cap_kvm_probe(v2, v3); |
| 56 | } |
| 57 | |
| 58 | QAPI_LIST_PREPEND(head, v2); |
| 59 | QAPI_LIST_PREPEND(head, v3); |
| 60 | |
| 61 | return head; |
| 62 | } |
| 63 | |
| 64 | QEMU_BUILD_BUG_ON(ARM_MAX_VQ > 16); |
| 65 | |
| 66 | /* |
| 67 | * These are cpu model features we want to advertise. The order here |
| 68 | * matters as this is the order in which qmp_query_cpu_model_expansion |
| 69 | * will attempt to set them. If there are dependencies between features, |
| 70 | * then the order that considers those dependencies must be used. |
| 71 | */ |
| 72 | static const char *cpu_model_advertised_features[] = { |
| 73 | "aarch64", "pmu", "sve", |
| 74 | "sve128", "sve256", "sve384", "sve512", |
| 75 | "sve640", "sve768", "sve896", "sve1024", "sve1152", "sve1280", |
| 76 | "sve1408", "sve1536", "sve1664", "sve1792", "sve1920", "sve2048", |
| 77 | "kvm-no-adjvtime", "kvm-steal-time", |
| 78 | "pauth", "pauth-impdef", "pauth-qarma3", "pauth-qarma5", |
| 79 | NULL |
| 80 | }; |
| 81 | |
| 82 | CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type, |
| 83 | CpuModelInfo *model, |
| 84 | Error **errp) |
| 85 | { |
| 86 | CpuModelExpansionInfo *expansion_info; |
| 87 | const QDict *qdict_in; |
| 88 | QDict *qdict_out; |
| 89 | ObjectClass *oc; |
| 90 | Object *obj; |
| 91 | const char *name; |
| 92 | int i; |
| 93 | |
| 94 | if (type != CPU_MODEL_EXPANSION_TYPE_FULL) { |
| 95 | error_setg(errp, "The requested expansion type is not supported"); |
| 96 | return NULL; |
| 97 | } |
| 98 | |
| 99 | if (!kvm_enabled() && !strcmp(model->name, "host")) { |
| 100 | error_setg(errp, "The CPU type '%s' requires KVM", model->name); |
| 101 | return NULL; |
| 102 | } |
| 103 | |
| 104 | oc = cpu_class_by_name(TYPE_ARM_CPU, model->name); |
| 105 | if (!oc) { |
| 106 | error_setg(errp, "The CPU type '%s' is not a recognized ARM CPU type", |
| 107 | model->name); |
| 108 | return NULL; |
| 109 | } |
| 110 | |
| 111 | if (kvm_enabled()) { |
| 112 | bool supported = false; |
| 113 | |
| 114 | if (!strcmp(model->name, "host") || !strcmp(model->name, "max")) { |
| 115 | /* These are kvmarm's recommended cpu types */ |
| 116 | supported = true; |
| 117 | } else if (current_machine->cpu_type) { |
| 118 | const char *cpu_type = current_machine->cpu_type; |
| 119 | int len = strlen(cpu_type) - strlen(ARM_CPU_TYPE_SUFFIX); |
| 120 | |
| 121 | if (strlen(model->name) == len && |
| 122 | !strncmp(model->name, cpu_type, len)) { |
| 123 | /* KVM is enabled and we're using this type, so it works. */ |
| 124 | supported = true; |
| 125 | } |
| 126 | } |
| 127 | if (!supported) { |
| 128 | error_setg(errp, "We cannot guarantee the CPU type '%s' works " |
| 129 | "with KVM on this host", model->name); |
| 130 | return NULL; |
| 131 | } |
| 132 | } |
| 133 | |
| 134 | obj = object_new(object_class_get_name(oc)); |
| 135 | |
| 136 | if (model->props) { |
| 137 | Visitor *visitor; |
| 138 | Error *err = NULL; |
| 139 | |
| 140 | visitor = qobject_input_visitor_new(model->props); |
| 141 | if (!visit_start_struct(visitor, "model.props", NULL, 0, errp)) { |
| 142 | visit_free(visitor); |
| 143 | object_unref(obj); |
| 144 | return NULL; |
| 145 | } |
| 146 | |
| 147 | qdict_in = qobject_to(QDict, model->props); |
| 148 | i = 0; |
| 149 | while ((name = cpu_model_advertised_features[i++]) != NULL) { |
| 150 | if (qdict_get(qdict_in, name)) { |
| 151 | if (!object_property_set(obj, name, visitor, &err)) { |
| 152 | break; |
| 153 | } |
| 154 | } |
| 155 | } |
| 156 | |
| 157 | if (!err) { |
| 158 | visit_check_struct(visitor, &err); |
| 159 | } |
| 160 | if (!err) { |
| 161 | arm_cpu_finalize_features(ARM_CPU(obj), &err); |
| 162 | } |
| 163 | visit_end_struct(visitor, NULL); |
| 164 | visit_free(visitor); |
| 165 | if (err) { |
| 166 | object_unref(obj); |
| 167 | error_propagate(errp, err); |
| 168 | return NULL; |
| 169 | } |
| 170 | } else { |
| 171 | arm_cpu_finalize_features(ARM_CPU(obj), &error_abort); |
| 172 | } |
| 173 | |
| 174 | expansion_info = g_new0(CpuModelExpansionInfo, 1); |
| 175 | expansion_info->model = g_malloc0(sizeof(*expansion_info->model)); |
| 176 | expansion_info->model->name = g_strdup(model->name); |
| 177 | |
| 178 | qdict_out = qdict_new(); |
| 179 | |
| 180 | i = 0; |
| 181 | while ((name = cpu_model_advertised_features[i++]) != NULL) { |
| 182 | ObjectProperty *prop = object_property_find(obj, name); |
| 183 | if (prop) { |
| 184 | QObject *value; |
| 185 | |
| 186 | assert(prop->get); |
| 187 | value = object_property_get_qobject(obj, name, &error_abort); |
| 188 | |
| 189 | qdict_put_obj(qdict_out, name, value); |
| 190 | } |
| 191 | } |
| 192 | |
| 193 | if (!qdict_size(qdict_out)) { |
| 194 | qobject_unref(qdict_out); |
| 195 | } else { |
| 196 | expansion_info->model->props = QOBJECT(qdict_out); |
| 197 | } |
| 198 | |
| 199 | object_unref(obj); |
| 200 | |
| 201 | return expansion_info; |
| 202 | } |
| 203 | |
| 204 | static void arm_cpu_add_definition(gpointer data, gpointer user_data) |
| 205 | { |
| 206 | ObjectClass *oc = data; |
| 207 | CpuDefinitionInfoList **cpu_list = user_data; |
| 208 | CpuDefinitionInfo *info; |
| 209 | const char *typename; |
| 210 | |
| 211 | typename = object_class_get_name(oc); |
| 212 | info = g_malloc0(sizeof(*info)); |
| 213 | info->name = cpu_model_from_type(typename); |
| 214 | info->q_typename = g_strdup(typename); |
| 215 | |
| 216 | QAPI_LIST_PREPEND(*cpu_list, info); |
| 217 | } |
| 218 | |
| 219 | CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp) |
| 220 | { |
| 221 | CpuDefinitionInfoList *cpu_list = NULL; |
| 222 | GSList *list; |
| 223 | |
| 224 | list = object_class_get_list(target_cpu_type(), false); |
| 225 | g_slist_foreach(list, arm_cpu_add_definition, &cpu_list); |
| 226 | g_slist_free(list); |
| 227 | |
| 228 | return cpu_list; |
| 229 | } |