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