hw/qdev.h

   1 #ifndef QDEV_H
   2 #define QDEV_H
   3
   4 #include "hw.h"
   5 #include "qemu-queue.h"
   6 #include "qemu-char.h"
   7 #include "qemu-option.h"
   8 #include "qapi/qapi-visit-core.h"
   9 #include "qemu/object.h"
  10 #include "error.h"
  11
  12 typedef struct Property Property;
  13
  14 typedef struct PropertyInfo PropertyInfo;
  15
  16 typedef struct CompatProperty CompatProperty;
  17
  18 typedef struct BusState BusState;
  19
  20 typedef struct BusClass BusClass;
  21
  22 enum DevState {
  23     DEV_STATE_CREATED = 1,
  24     DEV_STATE_INITIALIZED,
  25 };
  26
  27 enum {
  28     DEV_NVECTORS_UNSPECIFIED = -1,
  29 };
  30
  31 #define TYPE_DEVICE "device"
  32 #define DEVICE(obj) OBJECT_CHECK(DeviceState, (obj), TYPE_DEVICE)
  33 #define DEVICE_CLASS(klass) OBJECT_CLASS_CHECK(DeviceClass, (klass), TYPE_DEVICE)
  34 #define DEVICE_GET_CLASS(obj) OBJECT_GET_CLASS(DeviceClass, (obj), TYPE_DEVICE)
  35
  36 typedef int (*qdev_initfn)(DeviceState *dev);
  37 typedef int (*qdev_event)(DeviceState *dev);
  38 typedef void (*qdev_resetfn)(DeviceState *dev);
  39
  40 typedef struct DeviceClass {
  41     ObjectClass parent_class;
  42
  43     const char *fw_name;
  44     const char *desc;
  45     Property *props;
  46     int no_user;
  47
  48     /* callbacks */
  49     void (*reset)(DeviceState *dev);
  50
  51     /* device state */
  52     const VMStateDescription *vmsd;
  53
  54     /* Private to qdev / bus.  */
  55     qdev_initfn init;
  56     qdev_event unplug;
  57     qdev_event exit;
  58     const char *bus_type;
  59 } DeviceClass;
  60
  61 /* This structure should not be accessed directly.  We declare it here
  62    so that it can be embedded in individual device state structures.  */
  63 struct DeviceState {
  64     Object parent_obj;
  65
  66     const char *id;
  67     enum DevState state;
  68     QemuOpts *opts;
  69     int hotplugged;
  70     BusState *parent_bus;
  71     int num_gpio_out;
  72     qemu_irq *gpio_out;
  73     int num_gpio_in;
  74     qemu_irq *gpio_in;
  75     QLIST_HEAD(, BusState) child_bus;
  76     int num_child_bus;
  77     int instance_id_alias;
  78     int alias_required_for_version;
  79 };
  80
  81 #define TYPE_BUS "bus"
  82 #define BUS(obj) OBJECT_CHECK(BusState, (obj), TYPE_BUS)
  83 #define BUS_CLASS(klass) OBJECT_CLASS_CHECK(BusClass, (klass), TYPE_BUS)
  84 #define BUS_GET_CLASS(obj) OBJECT_GET_CLASS(BusClass, (obj), TYPE_BUS)
  85
  86 struct BusClass {
  87     ObjectClass parent_class;
  88
  89     /* FIXME first arg should be BusState */
  90     void (*print_dev)(Monitor *mon, DeviceState *dev, int indent);
  91     char *(*get_dev_path)(DeviceState *dev);
  92     /*
  93      * This callback is used to create Open Firmware device path in accordance
  94      * with OF spec http://forthworks.com/standards/of1275.pdf. Individual bus
  95      * bindings can be found at http://playground.sun.com/1275/bindings/.
  96      */
  97     char *(*get_fw_dev_path)(DeviceState *dev);
  98     int (*reset)(BusState *bus);
  99 };
 100
 101 typedef struct BusChild {
 102     DeviceState *child;
 103     int index;
 104     QTAILQ_ENTRY(BusChild) sibling;
 105 } BusChild;
 106
 107 /**
 108  * BusState:
 109  * @qom_allocated: Indicates whether the object was allocated by QOM.
 110  * @glib_allocated: Indicates whether the object was initialized in-place
 111  * yet is expected to be freed with g_free().
 112  */
 113 struct BusState {
 114     Object obj;
 115     DeviceState *parent;
 116     const char *name;
 117     int allow_hotplug;
 118     bool qom_allocated;
 119     bool glib_allocated;
 120     int max_index;
 121     QTAILQ_HEAD(ChildrenHead, BusChild) children;
 122     QLIST_ENTRY(BusState) sibling;
 123 };
 124
 125 struct Property {
 126     const char   *name;
 127     PropertyInfo *info;
 128     int          offset;
 129     uint8_t      bitnr;
 130     uint8_t      qtype;
 131     int64_t      defval;
 132 };
 133
 134 struct PropertyInfo {
 135     const char *name;
 136     const char *legacy_name;
 137     const char **enum_table;
 138     int (*parse)(DeviceState *dev, Property *prop, const char *str);
 139     int (*print)(DeviceState *dev, Property *prop, char *dest, size_t len);
 140     ObjectPropertyAccessor *get;
 141     ObjectPropertyAccessor *set;
 142     ObjectPropertyRelease *release;
 143 };
 144
 145 typedef struct GlobalProperty {
 146     const char *driver;
 147     const char *property;
 148     const char *value;
 149     QTAILQ_ENTRY(GlobalProperty) next;
 150 } GlobalProperty;
 151
 152 /*** Board API.  This should go away once we have a machine config file.  ***/
 153
 154 DeviceState *qdev_create(BusState *bus, const char *name);
 155 DeviceState *qdev_try_create(BusState *bus, const char *name);
 156 bool qdev_exists(const char *name);
 157 int qdev_device_help(QemuOpts *opts);
 158 DeviceState *qdev_device_add(QemuOpts *opts);
 159 int qdev_init(DeviceState *dev) QEMU_WARN_UNUSED_RESULT;
 160 void qdev_init_nofail(DeviceState *dev);
 161 void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id,
 162                                  int required_for_version);
 163 void qdev_unplug(DeviceState *dev, Error **errp);
 164 void qdev_free(DeviceState *dev);
 165 int qdev_simple_unplug_cb(DeviceState *dev);
 166 void qdev_machine_creation_done(void);
 167 bool qdev_machine_modified(void);
 168
 169 qemu_irq qdev_get_gpio_in(DeviceState *dev, int n);
 170 void qdev_connect_gpio_out(DeviceState *dev, int n, qemu_irq pin);
 171
 172 BusState *qdev_get_child_bus(DeviceState *dev, const char *name);
 173
 174 /*** Device API.  ***/
 175
 176 /* Register device properties.  */
 177 /* GPIO inputs also double as IRQ sinks.  */
 178 void qdev_init_gpio_in(DeviceState *dev, qemu_irq_handler handler, int n);
 179 void qdev_init_gpio_out(DeviceState *dev, qemu_irq *pins, int n);
 180
 181 BusState *qdev_get_parent_bus(DeviceState *dev);
 182
 183 /*** BUS API. ***/
 184
 185 DeviceState *qdev_find_recursive(BusState *bus, const char *id);
 186
 187 /* Returns 0 to walk children, > 0 to skip walk, < 0 to terminate walk. */
 188 typedef int (qbus_walkerfn)(BusState *bus, void *opaque);
 189 typedef int (qdev_walkerfn)(DeviceState *dev, void *opaque);
 190
 191 void qbus_create_inplace(BusState *bus, const char *typename,
 192                          DeviceState *parent, const char *name);
 193 BusState *qbus_create(const char *typename, DeviceState *parent, const char *name);
 194 /* Returns > 0 if either devfn or busfn skip walk somewhere in cursion,
 195  *         < 0 if either devfn or busfn terminate walk somewhere in cursion,
 196  *           0 otherwise. */
 197 int qbus_walk_children(BusState *bus, qdev_walkerfn *devfn,
 198                        qbus_walkerfn *busfn, void *opaque);
 199 int qdev_walk_children(DeviceState *dev, qdev_walkerfn *devfn,
 200                        qbus_walkerfn *busfn, void *opaque);
 201 void qdev_reset_all(DeviceState *dev);
 202 void qbus_reset_all_fn(void *opaque);
 203
 204 void qbus_free(BusState *bus);
 205
 206 #define FROM_QBUS(type, dev) DO_UPCAST(type, qbus, dev)
 207
 208 /* This should go away once we get rid of the NULL bus hack */
 209 BusState *sysbus_get_default(void);
 210
 211 /*** monitor commands ***/
 212
 213 void do_info_qtree(Monitor *mon);
 214 void do_info_qdm(Monitor *mon);
 215 int do_device_add(Monitor *mon, const QDict *qdict, QObject **ret_data);
 216 int do_device_del(Monitor *mon, const QDict *qdict, QObject **ret_data);
 217
 218 /*** qdev-properties.c ***/
 219
 220 extern PropertyInfo qdev_prop_bit;
 221 extern PropertyInfo qdev_prop_uint8;
 222 extern PropertyInfo qdev_prop_uint16;
 223 extern PropertyInfo qdev_prop_uint32;
 224 extern PropertyInfo qdev_prop_int32;
 225 extern PropertyInfo qdev_prop_uint64;
 226 extern PropertyInfo qdev_prop_hex8;
 227 extern PropertyInfo qdev_prop_hex32;
 228 extern PropertyInfo qdev_prop_hex64;
 229 extern PropertyInfo qdev_prop_string;
 230 extern PropertyInfo qdev_prop_chr;
 231 extern PropertyInfo qdev_prop_ptr;
 232 extern PropertyInfo qdev_prop_macaddr;
 233 extern PropertyInfo qdev_prop_losttickpolicy;
 234 extern PropertyInfo qdev_prop_bios_chs_trans;
 235 extern PropertyInfo qdev_prop_drive;
 236 extern PropertyInfo qdev_prop_netdev;
 237 extern PropertyInfo qdev_prop_vlan;
 238 extern PropertyInfo qdev_prop_pci_devfn;
 239 extern PropertyInfo qdev_prop_blocksize;
 240 extern PropertyInfo qdev_prop_pci_host_devaddr;
 241
 242 #define DEFINE_PROP(_name, _state, _field, _prop, _type) { \
 243         .name      = (_name),                                    \
 244         .info      = &(_prop),                                   \
 245         .offset    = offsetof(_state, _field)                    \
 246             + type_check(_type,typeof_field(_state, _field)),    \
 247         }
 248 #define DEFINE_PROP_DEFAULT(_name, _state, _field, _defval, _prop, _type) { \
 249         .name      = (_name),                                           \
 250         .info      = &(_prop),                                          \
 251         .offset    = offsetof(_state, _field)                           \
 252             + type_check(_type,typeof_field(_state, _field)),           \
 253         .qtype     = QTYPE_QINT,                                        \
 254         .defval    = (_type)_defval,                                    \
 255         }
 256 #define DEFINE_PROP_BIT(_name, _state, _field, _bit, _defval) {  \
 257         .name      = (_name),                                    \
 258         .info      = &(qdev_prop_bit),                           \
 259         .bitnr    = (_bit),                                      \
 260         .offset    = offsetof(_state, _field)                    \
 261             + type_check(uint32_t,typeof_field(_state, _field)), \
 262         .qtype     = QTYPE_QBOOL,                                \
 263         .defval    = (bool)_defval,                              \
 264         }
 265
 266 #define DEFINE_PROP_UINT8(_n, _s, _f, _d)                       \
 267     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_uint8, uint8_t)
 268 #define DEFINE_PROP_UINT16(_n, _s, _f, _d)                      \
 269     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_uint16, uint16_t)
 270 #define DEFINE_PROP_UINT32(_n, _s, _f, _d)                      \
 271     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_uint32, uint32_t)
 272 #define DEFINE_PROP_INT32(_n, _s, _f, _d)                      \
 273     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_int32, int32_t)
 274 #define DEFINE_PROP_UINT64(_n, _s, _f, _d)                      \
 275     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_uint64, uint64_t)
 276 #define DEFINE_PROP_HEX8(_n, _s, _f, _d)                       \
 277     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_hex8, uint8_t)
 278 #define DEFINE_PROP_HEX32(_n, _s, _f, _d)                       \
 279     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_hex32, uint32_t)
 280 #define DEFINE_PROP_HEX64(_n, _s, _f, _d)                       \
 281     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_hex64, uint64_t)
 282 #define DEFINE_PROP_PCI_DEVFN(_n, _s, _f, _d)                   \
 283     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_pci_devfn, int32_t)
 284
 285 #define DEFINE_PROP_PTR(_n, _s, _f)             \
 286     DEFINE_PROP(_n, _s, _f, qdev_prop_ptr, void*)
 287 #define DEFINE_PROP_CHR(_n, _s, _f)             \
 288     DEFINE_PROP(_n, _s, _f, qdev_prop_chr, CharDriverState*)
 289 #define DEFINE_PROP_STRING(_n, _s, _f)             \
 290     DEFINE_PROP(_n, _s, _f, qdev_prop_string, char*)
 291 #define DEFINE_PROP_NETDEV(_n, _s, _f)             \
 292     DEFINE_PROP(_n, _s, _f, qdev_prop_netdev, VLANClientState*)
 293 #define DEFINE_PROP_VLAN(_n, _s, _f)             \
 294     DEFINE_PROP(_n, _s, _f, qdev_prop_vlan, VLANClientState*)
 295 #define DEFINE_PROP_DRIVE(_n, _s, _f) \
 296     DEFINE_PROP(_n, _s, _f, qdev_prop_drive, BlockDriverState *)
 297 #define DEFINE_PROP_MACADDR(_n, _s, _f)         \
 298     DEFINE_PROP(_n, _s, _f, qdev_prop_macaddr, MACAddr)
 299 #define DEFINE_PROP_LOSTTICKPOLICY(_n, _s, _f, _d) \
 300     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_losttickpolicy, \
 301                         LostTickPolicy)
 302 #define DEFINE_PROP_BIOS_CHS_TRANS(_n, _s, _f, _d) \
 303     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_bios_chs_trans, int)
 304 #define DEFINE_PROP_BLOCKSIZE(_n, _s, _f, _d) \
 305     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_blocksize, uint16_t)
 306 #define DEFINE_PROP_PCI_HOST_DEVADDR(_n, _s, _f) \
 307     DEFINE_PROP(_n, _s, _f, qdev_prop_pci_host_devaddr, PCIHostDeviceAddress)
 308
 309 #define DEFINE_PROP_END_OF_LIST()               \
 310     {}
 311
 312 /* Set properties between creation and init.  */
 313 void *qdev_get_prop_ptr(DeviceState *dev, Property *prop);
 314 int qdev_prop_parse(DeviceState *dev, const char *name, const char *value);
 315 void qdev_prop_set_bit(DeviceState *dev, const char *name, bool value);
 316 void qdev_prop_set_uint8(DeviceState *dev, const char *name, uint8_t value);
 317 void qdev_prop_set_uint16(DeviceState *dev, const char *name, uint16_t value);
 318 void qdev_prop_set_uint32(DeviceState *dev, const char *name, uint32_t value);
 319 void qdev_prop_set_int32(DeviceState *dev, const char *name, int32_t value);
 320 void qdev_prop_set_uint64(DeviceState *dev, const char *name, uint64_t value);
 321 void qdev_prop_set_string(DeviceState *dev, const char *name, const char *value);
 322 void qdev_prop_set_chr(DeviceState *dev, const char *name, CharDriverState *value);
 323 void qdev_prop_set_netdev(DeviceState *dev, const char *name, VLANClientState *value);
 324 int qdev_prop_set_drive(DeviceState *dev, const char *name, BlockDriverState *value) QEMU_WARN_UNUSED_RESULT;
 325 void qdev_prop_set_drive_nofail(DeviceState *dev, const char *name, BlockDriverState *value);
 326 void qdev_prop_set_macaddr(DeviceState *dev, const char *name, uint8_t *value);
 327 void qdev_prop_set_enum(DeviceState *dev, const char *name, int value);
 328 /* FIXME: Remove opaque pointer properties.  */
 329 void qdev_prop_set_ptr(DeviceState *dev, const char *name, void *value);
 330
 331 void qdev_prop_register_global_list(GlobalProperty *props);
 332 void qdev_prop_set_globals(DeviceState *dev);
 333 void error_set_from_qdev_prop_error(Error **errp, int ret, DeviceState *dev,
 334                                     Property *prop, const char *value);
 335
 336 char *qdev_get_fw_dev_path(DeviceState *dev);
 337
 338 /**
 339  * @qdev_property_add_static - add a @Property to a device referencing a
 340  * field in a struct.
 341  */
 342 void qdev_property_add_static(DeviceState *dev, Property *prop, Error **errp);
 343
 344 /**
 345  * @qdev_machine_init
 346  *
 347  * Initialize platform devices before machine init.  This is a hack until full
 348  * support for composition is added.
 349  */
 350 void qdev_machine_init(void);
 351
 352 /**
 353  * @device_reset
 354  *
 355  * Reset a single device (by calling the reset method).
 356  */
 357 void device_reset(DeviceState *dev);
 358
 359 const VMStateDescription *qdev_get_vmsd(DeviceState *dev);
 360
 361 const char *qdev_fw_name(DeviceState *dev);
 362
 363 Object *qdev_get_machine(void);
 364
 365 /* FIXME: make this a link<> */
 366 void qdev_set_parent_bus(DeviceState *dev, BusState *bus);
 367
 368 extern int qdev_hotplug;
 369
 370 char *qdev_get_dev_path(DeviceState *dev);
 371
 372 #endif