hw/core/machine.c

   1 /*
   2  * QEMU Machine
   3  *
   4  * Copyright (C) 2014 Red Hat Inc
   5  *
   6  * Authors:
   7  *   Marcel Apfelbaum <marcel.a@redhat.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  10  * See the COPYING file in the top-level directory.
  11  */
  12
  13 #include "hw/boards.h"
  14 #include "qapi/visitor.h"
  15 #include "hw/sysbus.h"
  16 #include "sysemu/sysemu.h"
  17 #include "qemu/error-report.h"
  18
  19 static char *machine_get_accel(Object *obj, Error **errp)
  20 {
  21     MachineState *ms = MACHINE(obj);
  22
  23     return g_strdup(ms->accel);
  24 }
  25
  26 static void machine_set_accel(Object *obj, const char *value, Error **errp)
  27 {
  28     MachineState *ms = MACHINE(obj);
  29
  30     g_free(ms->accel);
  31     ms->accel = g_strdup(value);
  32 }
  33
  34 static bool machine_get_kernel_irqchip(Object *obj, Error **errp)
  35 {
  36     MachineState *ms = MACHINE(obj);
  37
  38     return ms->kernel_irqchip;
  39 }
  40
  41 static void machine_set_kernel_irqchip(Object *obj, bool value, Error **errp)
  42 {
  43     MachineState *ms = MACHINE(obj);
  44
  45     ms->kernel_irqchip = value;
  46 }
  47
  48 static void machine_get_kvm_shadow_mem(Object *obj, Visitor *v,
  49                                        void *opaque, const char *name,
  50                                        Error **errp)
  51 {
  52     MachineState *ms = MACHINE(obj);
  53     int64_t value = ms->kvm_shadow_mem;
  54
  55     visit_type_int(v, &value, name, errp);
  56 }
  57
  58 static void machine_set_kvm_shadow_mem(Object *obj, Visitor *v,
  59                                        void *opaque, const char *name,
  60                                        Error **errp)
  61 {
  62     MachineState *ms = MACHINE(obj);
  63     Error *error = NULL;
  64     int64_t value;
  65
  66     visit_type_int(v, &value, name, &error);
  67     if (error) {
  68         error_propagate(errp, error);
  69         return;
  70     }
  71
  72     ms->kvm_shadow_mem = value;
  73 }
  74
  75 static char *machine_get_kernel(Object *obj, Error **errp)
  76 {
  77     MachineState *ms = MACHINE(obj);
  78
  79     return g_strdup(ms->kernel_filename);
  80 }
  81
  82 static void machine_set_kernel(Object *obj, const char *value, Error **errp)
  83 {
  84     MachineState *ms = MACHINE(obj);
  85
  86     g_free(ms->kernel_filename);
  87     ms->kernel_filename = g_strdup(value);
  88 }
  89
  90 static char *machine_get_initrd(Object *obj, Error **errp)
  91 {
  92     MachineState *ms = MACHINE(obj);
  93
  94     return g_strdup(ms->initrd_filename);
  95 }
  96
  97 static void machine_set_initrd(Object *obj, const char *value, Error **errp)
  98 {
  99     MachineState *ms = MACHINE(obj);
 100
 101     g_free(ms->initrd_filename);
 102     ms->initrd_filename = g_strdup(value);
 103 }
 104
 105 static char *machine_get_append(Object *obj, Error **errp)
 106 {
 107     MachineState *ms = MACHINE(obj);
 108
 109     return g_strdup(ms->kernel_cmdline);
 110 }
 111
 112 static void machine_set_append(Object *obj, const char *value, Error **errp)
 113 {
 114     MachineState *ms = MACHINE(obj);
 115
 116     g_free(ms->kernel_cmdline);
 117     ms->kernel_cmdline = g_strdup(value);
 118 }
 119
 120 static char *machine_get_dtb(Object *obj, Error **errp)
 121 {
 122     MachineState *ms = MACHINE(obj);
 123
 124     return g_strdup(ms->dtb);
 125 }
 126
 127 static void machine_set_dtb(Object *obj, const char *value, Error **errp)
 128 {
 129     MachineState *ms = MACHINE(obj);
 130
 131     g_free(ms->dtb);
 132     ms->dtb = g_strdup(value);
 133 }
 134
 135 static char *machine_get_dumpdtb(Object *obj, Error **errp)
 136 {
 137     MachineState *ms = MACHINE(obj);
 138
 139     return g_strdup(ms->dumpdtb);
 140 }
 141
 142 static void machine_set_dumpdtb(Object *obj, const char *value, Error **errp)
 143 {
 144     MachineState *ms = MACHINE(obj);
 145
 146     g_free(ms->dumpdtb);
 147     ms->dumpdtb = g_strdup(value);
 148 }
 149
 150 static void machine_get_phandle_start(Object *obj, Visitor *v,
 151                                        void *opaque, const char *name,
 152                                        Error **errp)
 153 {
 154     MachineState *ms = MACHINE(obj);
 155     int64_t value = ms->phandle_start;
 156
 157     visit_type_int(v, &value, name, errp);
 158 }
 159
 160 static void machine_set_phandle_start(Object *obj, Visitor *v,
 161                                        void *opaque, const char *name,
 162                                        Error **errp)
 163 {
 164     MachineState *ms = MACHINE(obj);
 165     Error *error = NULL;
 166     int64_t value;
 167
 168     visit_type_int(v, &value, name, &error);
 169     if (error) {
 170         error_propagate(errp, error);
 171         return;
 172     }
 173
 174     ms->phandle_start = value;
 175 }
 176
 177 static char *machine_get_dt_compatible(Object *obj, Error **errp)
 178 {
 179     MachineState *ms = MACHINE(obj);
 180
 181     return g_strdup(ms->dt_compatible);
 182 }
 183
 184 static void machine_set_dt_compatible(Object *obj, const char *value, Error **errp)
 185 {
 186     MachineState *ms = MACHINE(obj);
 187
 188     g_free(ms->dt_compatible);
 189     ms->dt_compatible = g_strdup(value);
 190 }
 191
 192 static bool machine_get_dump_guest_core(Object *obj, Error **errp)
 193 {
 194     MachineState *ms = MACHINE(obj);
 195
 196     return ms->dump_guest_core;
 197 }
 198
 199 static void machine_set_dump_guest_core(Object *obj, bool value, Error **errp)
 200 {
 201     MachineState *ms = MACHINE(obj);
 202
 203     ms->dump_guest_core = value;
 204 }
 205
 206 static bool machine_get_mem_merge(Object *obj, Error **errp)
 207 {
 208     MachineState *ms = MACHINE(obj);
 209
 210     return ms->mem_merge;
 211 }
 212
 213 static void machine_set_mem_merge(Object *obj, bool value, Error **errp)
 214 {
 215     MachineState *ms = MACHINE(obj);
 216
 217     ms->mem_merge = value;
 218 }
 219
 220 static bool machine_get_usb(Object *obj, Error **errp)
 221 {
 222     MachineState *ms = MACHINE(obj);
 223
 224     return ms->usb;
 225 }
 226
 227 static void machine_set_usb(Object *obj, bool value, Error **errp)
 228 {
 229     MachineState *ms = MACHINE(obj);
 230
 231     ms->usb = value;
 232 }
 233
 234 static char *machine_get_firmware(Object *obj, Error **errp)
 235 {
 236     MachineState *ms = MACHINE(obj);
 237
 238     return g_strdup(ms->firmware);
 239 }
 240
 241 static void machine_set_firmware(Object *obj, const char *value, Error **errp)
 242 {
 243     MachineState *ms = MACHINE(obj);
 244
 245     g_free(ms->firmware);
 246     ms->firmware = g_strdup(value);
 247 }
 248
 249 static bool machine_get_iommu(Object *obj, Error **errp)
 250 {
 251     MachineState *ms = MACHINE(obj);
 252
 253     return ms->iommu;
 254 }
 255
 256 static void machine_set_iommu(Object *obj, bool value, Error **errp)
 257 {
 258     MachineState *ms = MACHINE(obj);
 259
 260     ms->iommu = value;
 261 }
 262
 263 static int error_on_sysbus_device(SysBusDevice *sbdev, void *opaque)
 264 {
 265     error_report("Option '-device %s' cannot be handled by this machine",
 266                  object_class_get_name(object_get_class(OBJECT(sbdev))));
 267     exit(1);
 268 }
 269
 270 static void machine_init_notify(Notifier *notifier, void *data)
 271 {
 272     Object *machine = qdev_get_machine();
 273     ObjectClass *oc = object_get_class(machine);
 274     MachineClass *mc = MACHINE_CLASS(oc);
 275
 276     if (mc->has_dynamic_sysbus) {
 277         /* Our machine can handle dynamic sysbus devices, we're all good */
 278         return;
 279     }
 280
 281     /*
 282      * Loop through all dynamically created devices and check whether there
 283      * are sysbus devices among them. If there are, error out.
 284      */
 285     foreach_dynamic_sysbus_device(error_on_sysbus_device, NULL);
 286 }
 287
 288 static void machine_initfn(Object *obj)
 289 {
 290     MachineState *ms = MACHINE(obj);
 291
 292     object_property_add_str(obj, "accel",
 293                             machine_get_accel, machine_set_accel, NULL);
 294     object_property_set_description(obj, "accel",
 295                                     "Accelerator list",
 296                                     NULL);
 297     object_property_add_bool(obj, "kernel-irqchip",
 298                              machine_get_kernel_irqchip,
 299                              machine_set_kernel_irqchip,
 300                              NULL);
 301     object_property_set_description(obj, "kernel-irqchip",
 302                                     "Use KVM in-kernel irqchip",
 303                                     NULL);
 304     object_property_add(obj, "kvm-shadow-mem", "int",
 305                         machine_get_kvm_shadow_mem,
 306                         machine_set_kvm_shadow_mem,
 307                         NULL, NULL, NULL);
 308     object_property_set_description(obj, "kvm-shadow-mem",
 309                                     "KVM shadow MMU size",
 310                                     NULL);
 311     object_property_add_str(obj, "kernel",
 312                             machine_get_kernel, machine_set_kernel, NULL);
 313     object_property_set_description(obj, "kernel",
 314                                     "Linux kernel image file",
 315                                     NULL);
 316     object_property_add_str(obj, "initrd",
 317                             machine_get_initrd, machine_set_initrd, NULL);
 318     object_property_set_description(obj, "initrd",
 319                                     "Linux initial ramdisk file",
 320                                     NULL);
 321     object_property_add_str(obj, "append",
 322                             machine_get_append, machine_set_append, NULL);
 323     object_property_set_description(obj, "append",
 324                                     "Linux kernel command line",
 325                                     NULL);
 326     object_property_add_str(obj, "dtb",
 327                             machine_get_dtb, machine_set_dtb, NULL);
 328     object_property_set_description(obj, "dtb",
 329                                     "Linux kernel device tree file",
 330                                     NULL);
 331     object_property_add_str(obj, "dumpdtb",
 332                             machine_get_dumpdtb, machine_set_dumpdtb, NULL);
 333     object_property_set_description(obj, "dumpdtb",
 334                                     "Dump current dtb to a file and quit",
 335                                     NULL);
 336     object_property_add(obj, "phandle-start", "int",
 337                         machine_get_phandle_start,
 338                         machine_set_phandle_start,
 339                         NULL, NULL, NULL);
 340     object_property_set_description(obj, "phandle-start",
 341                                     "The first phandle ID we may generate dynamically",
 342                                     NULL);
 343     object_property_add_str(obj, "dt-compatible",
 344                             machine_get_dt_compatible,
 345                             machine_set_dt_compatible,
 346                             NULL);
 347     object_property_set_description(obj, "dt-compatible",
 348                                     "Overrides the \"compatible\" property of the dt root node",
 349                                     NULL);
 350     object_property_add_bool(obj, "dump-guest-core",
 351                              machine_get_dump_guest_core,
 352                              machine_set_dump_guest_core,
 353                              NULL);
 354     object_property_set_description(obj, "dump-guest-core",
 355                                     "Include guest memory in  a core dump",
 356                                     NULL);
 357     object_property_add_bool(obj, "mem-merge",
 358                              machine_get_mem_merge,
 359                              machine_set_mem_merge, NULL);
 360     object_property_set_description(obj, "mem-merge",
 361                                     "Enable/disable memory merge support",
 362                                     NULL);
 363     object_property_add_bool(obj, "usb",
 364                              machine_get_usb,
 365                              machine_set_usb, NULL);
 366     object_property_set_description(obj, "usb",
 367                                     "Set on/off to enable/disable usb",
 368                                     NULL);
 369     object_property_add_str(obj, "firmware",
 370                             machine_get_firmware,
 371                             machine_set_firmware, NULL);
 372     object_property_set_description(obj, "firmware",
 373                                     "Firmware image",
 374                                     NULL);
 375     object_property_add_bool(obj, "iommu",
 376                              machine_get_iommu,
 377                              machine_set_iommu, NULL);
 378     object_property_set_description(obj, "iommu",
 379                                     "Set on/off to enable/disable Intel IOMMU (VT-d)",
 380                                     NULL);
 381
 382     /* Register notifier when init is done for sysbus sanity checks */
 383     ms->sysbus_notifier.notify = machine_init_notify;
 384     qemu_add_machine_init_done_notifier(&ms->sysbus_notifier);
 385 }
 386
 387 static void machine_finalize(Object *obj)
 388 {
 389     MachineState *ms = MACHINE(obj);
 390
 391     g_free(ms->accel);
 392     g_free(ms->kernel_filename);
 393     g_free(ms->initrd_filename);
 394     g_free(ms->kernel_cmdline);
 395     g_free(ms->dtb);
 396     g_free(ms->dumpdtb);
 397     g_free(ms->dt_compatible);
 398     g_free(ms->firmware);
 399 }
 400
 401 bool machine_usb(MachineState *machine)
 402 {
 403     return machine->usb;
 404 }
 405
 406 static const TypeInfo machine_info = {
 407     .name = TYPE_MACHINE,
 408     .parent = TYPE_OBJECT,
 409     .abstract = true,
 410     .class_size = sizeof(MachineClass),
 411     .instance_size = sizeof(MachineState),
 412     .instance_init = machine_initfn,
 413     .instance_finalize = machine_finalize,
 414 };
 415
 416 static void machine_register_types(void)
 417 {
 418     type_register_static(&machine_info);
 419 }
 420
 421 type_init(machine_register_types)