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
   9 typedef struct Property Property;
  10
  11 typedef struct PropertyInfo PropertyInfo;
  12
  13 typedef struct CompatProperty CompatProperty;
  14
  15 typedef struct DeviceInfo DeviceInfo;
  16
  17 typedef struct BusState BusState;
  18
  19 typedef struct BusInfo BusInfo;
  20
  21 enum DevState {
  22     DEV_STATE_CREATED = 1,
  23     DEV_STATE_INITIALIZED,
  24 };
  25
  26 enum {
  27     DEV_NVECTORS_UNSPECIFIED = -1,
  28 };
  29
  30 /* This structure should not be accessed directly.  We declare it here
  31    so that it can be embedded in individual device state structures.  */
  32 struct DeviceState {
  33     const char *id;
  34     enum DevState state;
  35     QemuOpts *opts;
  36     int hotplugged;
  37     DeviceInfo *info;
  38     BusState *parent_bus;
  39     int num_gpio_out;
  40     qemu_irq *gpio_out;
  41     int num_gpio_in;
  42     qemu_irq *gpio_in;
  43     QLIST_HEAD(, BusState) child_bus;
  44     int num_child_bus;
  45     QTAILQ_ENTRY(DeviceState) sibling;
  46     int instance_id_alias;
  47     int alias_required_for_version;
  48 };
  49
  50 typedef void (*bus_dev_printfn)(Monitor *mon, DeviceState *dev, int indent);
  51 typedef char *(*bus_get_dev_path)(DeviceState *dev);
  52 /*
  53  * This callback is used to create Open Firmware device path in accordance with
  54  * OF spec http://forthworks.com/standards/of1275.pdf. Indicidual bus bindings
  55  * can be found here http://playground.sun.com/1275/bindings/.
  56  */
  57 typedef char *(*bus_get_fw_dev_path)(DeviceState *dev);
  58 typedef int (qbus_resetfn)(BusState *bus);
  59
  60 struct BusInfo {
  61     const char *name;
  62     size_t size;
  63     bus_dev_printfn print_dev;
  64     bus_get_dev_path get_dev_path;
  65     bus_get_fw_dev_path get_fw_dev_path;
  66     qbus_resetfn *reset;
  67     Property *props;
  68 };
  69
  70 struct BusState {
  71     DeviceState *parent;
  72     BusInfo *info;
  73     const char *name;
  74     int allow_hotplug;
  75     int qdev_allocated;
  76     QTAILQ_HEAD(ChildrenHead, DeviceState) children;
  77     QLIST_ENTRY(BusState) sibling;
  78 };
  79
  80 struct Property {
  81     const char   *name;
  82     PropertyInfo *info;
  83     int          offset;
  84     int          bitnr;
  85     void         *defval;
  86 };
  87
  88 enum PropertyType {
  89     PROP_TYPE_UNSPEC = 0,
  90     PROP_TYPE_UINT8,
  91     PROP_TYPE_UINT16,
  92     PROP_TYPE_UINT32,
  93     PROP_TYPE_INT32,
  94     PROP_TYPE_UINT64,
  95     PROP_TYPE_TADDR,
  96     PROP_TYPE_MACADDR,
  97     PROP_TYPE_DRIVE,
  98     PROP_TYPE_CHR,
  99     PROP_TYPE_STRING,
 100     PROP_TYPE_NETDEV,
 101     PROP_TYPE_VLAN,
 102     PROP_TYPE_PTR,
 103     PROP_TYPE_BIT,
 104 };
 105
 106 struct PropertyInfo {
 107     const char *name;
 108     size_t size;
 109     enum PropertyType type;
 110     int (*parse)(DeviceState *dev, Property *prop, const char *str);
 111     int (*print)(DeviceState *dev, Property *prop, char *dest, size_t len);
 112     void (*free)(DeviceState *dev, Property *prop);
 113 };
 114
 115 typedef struct GlobalProperty {
 116     const char *driver;
 117     const char *property;
 118     const char *value;
 119     QTAILQ_ENTRY(GlobalProperty) next;
 120 } GlobalProperty;
 121
 122 /*** Board API.  This should go away once we have a machine config file.  ***/
 123
 124 DeviceState *qdev_create(BusState *bus, const char *name);
 125 DeviceState *qdev_try_create(BusState *bus, const char *name);
 126 int qdev_device_help(QemuOpts *opts);
 127 DeviceState *qdev_device_add(QemuOpts *opts);
 128 int qdev_init(DeviceState *dev) QEMU_WARN_UNUSED_RESULT;
 129 void qdev_init_nofail(DeviceState *dev);
 130 void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id,
 131                                  int required_for_version);
 132 int qdev_unplug(DeviceState *dev);
 133 void qdev_free(DeviceState *dev);
 134 int qdev_simple_unplug_cb(DeviceState *dev);
 135 void qdev_machine_creation_done(void);
 136 bool qdev_machine_modified(void);
 137
 138 qemu_irq qdev_get_gpio_in(DeviceState *dev, int n);
 139 void qdev_connect_gpio_out(DeviceState *dev, int n, qemu_irq pin);
 140
 141 BusState *qdev_get_child_bus(DeviceState *dev, const char *name);
 142
 143 /*** Device API.  ***/
 144
 145 typedef int (*qdev_initfn)(DeviceState *dev, DeviceInfo *info);
 146 typedef int (*qdev_event)(DeviceState *dev);
 147 typedef void (*qdev_resetfn)(DeviceState *dev);
 148
 149 struct DeviceInfo {
 150     const char *name;
 151     const char *fw_name;
 152     const char *alias;
 153     const char *desc;
 154     size_t size;
 155     Property *props;
 156     int no_user;
 157
 158     /* callbacks */
 159     qdev_resetfn reset;
 160
 161     /* device state */
 162     const VMStateDescription *vmsd;
 163
 164     /* Private to qdev / bus.  */
 165     qdev_initfn init;
 166     qdev_event unplug;
 167     qdev_event exit;
 168     BusInfo *bus_info;
 169     struct DeviceInfo *next;
 170 };
 171 extern DeviceInfo *device_info_list;
 172
 173 void qdev_register(DeviceInfo *info);
 174
 175 /* Register device properties.  */
 176 /* GPIO inputs also double as IRQ sinks.  */
 177 void qdev_init_gpio_in(DeviceState *dev, qemu_irq_handler handler, int n);
 178 void qdev_init_gpio_out(DeviceState *dev, qemu_irq *pins, int n);
 179
 180 CharDriverState *qdev_init_chardev(DeviceState *dev);
 181
 182 BusState *qdev_get_parent_bus(DeviceState *dev);
 183
 184 /*** BUS API. ***/
 185
 186 DeviceState *qdev_find_recursive(BusState *bus, const char *id);
 187
 188 /* Returns 0 to walk children, > 0 to skip walk, < 0 to terminate walk. */
 189 typedef int (qbus_walkerfn)(BusState *bus, void *opaque);
 190 typedef int (qdev_walkerfn)(DeviceState *dev, void *opaque);
 191
 192 void qbus_create_inplace(BusState *bus, BusInfo *info,
 193                          DeviceState *parent, const char *name);
 194 BusState *qbus_create(BusInfo *info, DeviceState *parent, const char *name);
 195 /* Returns > 0 if either devfn or busfn skip walk somewhere in cursion,
 196  *         < 0 if either devfn or busfn terminate walk somewhere in cursion,
 197  *           0 otherwise. */
 198 int qbus_walk_children(BusState *bus, qdev_walkerfn *devfn,
 199                        qbus_walkerfn *busfn, void *opaque);
 200 int qdev_walk_children(DeviceState *dev, qdev_walkerfn *devfn,
 201                        qbus_walkerfn *busfn, void *opaque);
 202 void qdev_reset_all(DeviceState *dev);
 203 void qbus_reset_all_fn(void *opaque);
 204
 205 void qbus_free(BusState *bus);
 206
 207 #define FROM_QBUS(type, dev) DO_UPCAST(type, qbus, dev)
 208
 209 /* This should go away once we get rid of the NULL bus hack */
 210 BusState *sysbus_get_default(void);
 211
 212 /*** monitor commands ***/
 213
 214 void do_info_qtree(Monitor *mon);
 215 void do_info_qdm(Monitor *mon);
 216 int do_device_add(Monitor *mon, const QDict *qdict, QObject **ret_data);
 217 int do_device_del(Monitor *mon, const QDict *qdict, QObject **ret_data);
 218
 219 /*** qdev-properties.c ***/
 220
 221 extern PropertyInfo qdev_prop_bit;
 222 extern PropertyInfo qdev_prop_uint8;
 223 extern PropertyInfo qdev_prop_uint16;
 224 extern PropertyInfo qdev_prop_uint32;
 225 extern PropertyInfo qdev_prop_int32;
 226 extern PropertyInfo qdev_prop_uint64;
 227 extern PropertyInfo qdev_prop_hex8;
 228 extern PropertyInfo qdev_prop_hex32;
 229 extern PropertyInfo qdev_prop_hex64;
 230 extern PropertyInfo qdev_prop_string;
 231 extern PropertyInfo qdev_prop_chr;
 232 extern PropertyInfo qdev_prop_ptr;
 233 extern PropertyInfo qdev_prop_macaddr;
 234 extern PropertyInfo qdev_prop_drive;
 235 extern PropertyInfo qdev_prop_netdev;
 236 extern PropertyInfo qdev_prop_vlan;
 237 extern PropertyInfo qdev_prop_pci_devfn;
 238
 239 #define DEFINE_PROP(_name, _state, _field, _prop, _type) { \
 240         .name      = (_name),                                    \
 241         .info      = &(_prop),                                   \
 242         .offset    = offsetof(_state, _field)                    \
 243             + type_check(_type,typeof_field(_state, _field)),    \
 244         }
 245 #define DEFINE_PROP_DEFAULT(_name, _state, _field, _defval, _prop, _type) { \
 246         .name      = (_name),                                           \
 247         .info      = &(_prop),                                          \
 248         .offset    = offsetof(_state, _field)                           \
 249             + type_check(_type,typeof_field(_state, _field)),           \
 250         .defval    = (_type[]) { _defval },                             \
 251         }
 252 #define DEFINE_PROP_BIT(_name, _state, _field, _bit, _defval) {  \
 253         .name      = (_name),                                    \
 254         .info      = &(qdev_prop_bit),                           \
 255         .bitnr    = (_bit),                                      \
 256         .offset    = offsetof(_state, _field)                    \
 257             + type_check(uint32_t,typeof_field(_state, _field)), \
 258         .defval    = (bool[]) { (_defval) },                     \
 259         }
 260
 261 #define DEFINE_PROP_UINT8(_n, _s, _f, _d)                       \
 262     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_uint8, uint8_t)
 263 #define DEFINE_PROP_UINT16(_n, _s, _f, _d)                      \
 264     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_uint16, uint16_t)
 265 #define DEFINE_PROP_UINT32(_n, _s, _f, _d)                      \
 266     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_uint32, uint32_t)
 267 #define DEFINE_PROP_INT32(_n, _s, _f, _d)                      \
 268     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_int32, int32_t)
 269 #define DEFINE_PROP_UINT64(_n, _s, _f, _d)                      \
 270     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_uint64, uint64_t)
 271 #define DEFINE_PROP_HEX8(_n, _s, _f, _d)                       \
 272     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_hex8, uint8_t)
 273 #define DEFINE_PROP_HEX32(_n, _s, _f, _d)                       \
 274     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_hex32, uint32_t)
 275 #define DEFINE_PROP_HEX64(_n, _s, _f, _d)                       \
 276     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_hex64, uint64_t)
 277 #define DEFINE_PROP_PCI_DEVFN(_n, _s, _f, _d)                   \
 278     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_pci_devfn, uint32_t)
 279
 280 #define DEFINE_PROP_PTR(_n, _s, _f)             \
 281     DEFINE_PROP(_n, _s, _f, qdev_prop_ptr, void*)
 282 #define DEFINE_PROP_CHR(_n, _s, _f)             \
 283     DEFINE_PROP(_n, _s, _f, qdev_prop_chr, CharDriverState*)
 284 #define DEFINE_PROP_STRING(_n, _s, _f)             \
 285     DEFINE_PROP(_n, _s, _f, qdev_prop_string, char*)
 286 #define DEFINE_PROP_NETDEV(_n, _s, _f)             \
 287     DEFINE_PROP(_n, _s, _f, qdev_prop_netdev, VLANClientState*)
 288 #define DEFINE_PROP_VLAN(_n, _s, _f)             \
 289     DEFINE_PROP(_n, _s, _f, qdev_prop_vlan, VLANState*)
 290 #define DEFINE_PROP_DRIVE(_n, _s, _f) \
 291     DEFINE_PROP(_n, _s, _f, qdev_prop_drive, BlockDriverState *)
 292 #define DEFINE_PROP_MACADDR(_n, _s, _f)         \
 293     DEFINE_PROP(_n, _s, _f, qdev_prop_macaddr, MACAddr)
 294
 295 #define DEFINE_PROP_END_OF_LIST()               \
 296     {}
 297
 298 /* Set properties between creation and init.  */
 299 void *qdev_get_prop_ptr(DeviceState *dev, Property *prop);
 300 int qdev_prop_exists(DeviceState *dev, const char *name);
 301 int qdev_prop_parse(DeviceState *dev, const char *name, const char *value);
 302 void qdev_prop_set(DeviceState *dev, const char *name, void *src, enum PropertyType type);
 303 void qdev_prop_set_bit(DeviceState *dev, const char *name, bool value);
 304 void qdev_prop_set_uint8(DeviceState *dev, const char *name, uint8_t value);
 305 void qdev_prop_set_uint16(DeviceState *dev, const char *name, uint16_t value);
 306 void qdev_prop_set_uint32(DeviceState *dev, const char *name, uint32_t value);
 307 void qdev_prop_set_int32(DeviceState *dev, const char *name, int32_t value);
 308 void qdev_prop_set_uint64(DeviceState *dev, const char *name, uint64_t value);
 309 void qdev_prop_set_string(DeviceState *dev, const char *name, char *value);
 310 void qdev_prop_set_chr(DeviceState *dev, const char *name, CharDriverState *value);
 311 void qdev_prop_set_netdev(DeviceState *dev, const char *name, VLANClientState *value);
 312 void qdev_prop_set_vlan(DeviceState *dev, const char *name, VLANState *value);
 313 int qdev_prop_set_drive(DeviceState *dev, const char *name, BlockDriverState *value) QEMU_WARN_UNUSED_RESULT;
 314 void qdev_prop_set_drive_nofail(DeviceState *dev, const char *name, BlockDriverState *value);
 315 void qdev_prop_set_macaddr(DeviceState *dev, const char *name, uint8_t *value);
 316 /* FIXME: Remove opaque pointer properties.  */
 317 void qdev_prop_set_ptr(DeviceState *dev, const char *name, void *value);
 318 void qdev_prop_set_defaults(DeviceState *dev, Property *props);
 319
 320 void qdev_prop_register_global_list(GlobalProperty *props);
 321 void qdev_prop_set_globals(DeviceState *dev);
 322
 323 static inline const char *qdev_fw_name(DeviceState *dev)
 324 {
 325     return dev->info->fw_name ? : dev->info->alias ? : dev->info->name;
 326 }
 327
 328 char *qdev_get_fw_dev_path(DeviceState *dev);
 329 /* This is a nasty hack to allow passing a NULL bus to qdev_create.  */
 330 extern struct BusInfo system_bus_info;
 331
 332 #endif