include/hw/qdev-properties.h

   1 #ifndef QEMU_QDEV_PROPERTIES_H
   2 #define QEMU_QDEV_PROPERTIES_H
   3
   4 #include "qapi/qapi-types-block.h"
   5 #include "qapi/qapi-types-misc.h"
   6 #include "hw/qdev-core.h"
   7
   8 /*** qdev-properties.c ***/
   9
  10 extern const PropertyInfo qdev_prop_bit;
  11 extern const PropertyInfo qdev_prop_bit64;
  12 extern const PropertyInfo qdev_prop_bool;
  13 extern const PropertyInfo qdev_prop_uint8;
  14 extern const PropertyInfo qdev_prop_uint16;
  15 extern const PropertyInfo qdev_prop_uint32;
  16 extern const PropertyInfo qdev_prop_int32;
  17 extern const PropertyInfo qdev_prop_uint64;
  18 extern const PropertyInfo qdev_prop_int64;
  19 extern const PropertyInfo qdev_prop_size;
  20 extern const PropertyInfo qdev_prop_string;
  21 extern const PropertyInfo qdev_prop_chr;
  22 extern const PropertyInfo qdev_prop_tpm;
  23 extern const PropertyInfo qdev_prop_ptr;
  24 extern const PropertyInfo qdev_prop_macaddr;
  25 extern const PropertyInfo qdev_prop_on_off_auto;
  26 extern const PropertyInfo qdev_prop_losttickpolicy;
  27 extern const PropertyInfo qdev_prop_blockdev_on_error;
  28 extern const PropertyInfo qdev_prop_bios_chs_trans;
  29 extern const PropertyInfo qdev_prop_fdc_drive_type;
  30 extern const PropertyInfo qdev_prop_drive;
  31 extern const PropertyInfo qdev_prop_netdev;
  32 extern const PropertyInfo qdev_prop_pci_devfn;
  33 extern const PropertyInfo qdev_prop_blocksize;
  34 extern const PropertyInfo qdev_prop_pci_host_devaddr;
  35 extern const PropertyInfo qdev_prop_uuid;
  36 extern const PropertyInfo qdev_prop_arraylen;
  37 extern const PropertyInfo qdev_prop_link;
  38 extern const PropertyInfo qdev_prop_off_auto_pcibar;
  39
  40 #define DEFINE_PROP(_name, _state, _field, _prop, _type) { \
  41         .name      = (_name),                                    \
  42         .info      = &(_prop),                                   \
  43         .offset    = offsetof(_state, _field)                    \
  44             + type_check(_type, typeof_field(_state, _field)),   \
  45         }
  46
  47 #define DEFINE_PROP_SIGNED(_name, _state, _field, _defval, _prop, _type) { \
  48         .name      = (_name),                                           \
  49         .info      = &(_prop),                                          \
  50         .offset    = offsetof(_state, _field)                           \
  51             + type_check(_type,typeof_field(_state, _field)),           \
  52         .set_default = true,                                            \
  53         .defval.i  = (_type)_defval,                                    \
  54         }
  55
  56 #define DEFINE_PROP_SIGNED_NODEFAULT(_name, _state, _field, _prop, _type) { \
  57         .name      = (_name),                                           \
  58         .info      = &(_prop),                                          \
  59         .offset    = offsetof(_state, _field)                           \
  60             + type_check(_type, typeof_field(_state, _field)),          \
  61         }
  62
  63 #define DEFINE_PROP_BIT(_name, _state, _field, _bit, _defval) {  \
  64         .name      = (_name),                                    \
  65         .info      = &(qdev_prop_bit),                           \
  66         .bitnr    = (_bit),                                      \
  67         .offset    = offsetof(_state, _field)                    \
  68             + type_check(uint32_t,typeof_field(_state, _field)), \
  69         .set_default = true,                                     \
  70         .defval.u  = (bool)_defval,                              \
  71         }
  72
  73 #define DEFINE_PROP_UNSIGNED(_name, _state, _field, _defval, _prop, _type) { \
  74         .name      = (_name),                                           \
  75         .info      = &(_prop),                                          \
  76         .offset    = offsetof(_state, _field)                           \
  77             + type_check(_type, typeof_field(_state, _field)),          \
  78         .set_default = true,                                            \
  79         .defval.u  = (_type)_defval,                                    \
  80         }
  81
  82 #define DEFINE_PROP_UNSIGNED_NODEFAULT(_name, _state, _field, _prop, _type) { \
  83         .name      = (_name),                                           \
  84         .info      = &(_prop),                                          \
  85         .offset    = offsetof(_state, _field)                           \
  86             + type_check(_type, typeof_field(_state, _field)),          \
  87         }
  88
  89 #define DEFINE_PROP_BIT64(_name, _state, _field, _bit, _defval) {       \
  90         .name      = (_name),                                           \
  91         .info      = &(qdev_prop_bit64),                                \
  92         .bitnr    = (_bit),                                             \
  93         .offset    = offsetof(_state, _field)                           \
  94             + type_check(uint64_t, typeof_field(_state, _field)),       \
  95         .set_default = true,                                            \
  96         .defval.u  = (bool)_defval,                                     \
  97         }
  98
  99 #define DEFINE_PROP_BOOL(_name, _state, _field, _defval) {       \
 100         .name      = (_name),                                    \
 101         .info      = &(qdev_prop_bool),                          \
 102         .offset    = offsetof(_state, _field)                    \
 103             + type_check(bool, typeof_field(_state, _field)),    \
 104         .set_default = true,                                     \
 105         .defval.u    = (bool)_defval,                            \
 106         }
 107
 108 #define PROP_ARRAY_LEN_PREFIX "len-"
 109
 110 /**
 111  * DEFINE_PROP_ARRAY:
 112  * @_name: name of the array
 113  * @_state: name of the device state structure type
 114  * @_field: uint32_t field in @_state to hold the array length
 115  * @_arrayfield: field in @_state (of type '@_arraytype *') which
 116  *               will point to the array
 117  * @_arrayprop: PropertyInfo defining what property the array elements have
 118  * @_arraytype: C type of the array elements
 119  *
 120  * Define device properties for a variable-length array _name.  A
 121  * static property "len-arrayname" is defined. When the device creator
 122  * sets this property to the desired length of array, further dynamic
 123  * properties "arrayname[0]", "arrayname[1]", ...  are defined so the
 124  * device creator can set the array element values. Setting the
 125  * "len-arrayname" property more than once is an error.
 126  *
 127  * When the array length is set, the @_field member of the device
 128  * struct is set to the array length, and @_arrayfield is set to point
 129  * to (zero-initialised) memory allocated for the array.  For a zero
 130  * length array, @_field will be set to 0 and @_arrayfield to NULL.
 131  * It is the responsibility of the device deinit code to free the
 132  * @_arrayfield memory.
 133  */
 134 #define DEFINE_PROP_ARRAY(_name, _state, _field,                        \
 135                           _arrayfield, _arrayprop, _arraytype) {        \
 136         .name = (PROP_ARRAY_LEN_PREFIX _name),                          \
 137         .info = &(qdev_prop_arraylen),                                  \
 138         .set_default = true,                                            \
 139         .defval.u = 0,                                                  \
 140         .offset = offsetof(_state, _field)                              \
 141             + type_check(uint32_t, typeof_field(_state, _field)),       \
 142         .arrayinfo = &(_arrayprop),                                     \
 143         .arrayfieldsize = sizeof(_arraytype),                           \
 144         .arrayoffset = offsetof(_state, _arrayfield),                   \
 145         }
 146
 147 #define DEFINE_PROP_LINK(_name, _state, _field, _type, _ptr_type) {     \
 148         .name = (_name),                                                \
 149         .info = &(qdev_prop_link),                                      \
 150         .offset = offsetof(_state, _field)                              \
 151             + type_check(_ptr_type, typeof_field(_state, _field)),      \
 152         .link_type  = _type,                                            \
 153         }
 154
 155 #define DEFINE_PROP_UINT8(_n, _s, _f, _d)                       \
 156     DEFINE_PROP_UNSIGNED(_n, _s, _f, _d, qdev_prop_uint8, uint8_t)
 157 #define DEFINE_PROP_UINT16(_n, _s, _f, _d)                      \
 158     DEFINE_PROP_UNSIGNED(_n, _s, _f, _d, qdev_prop_uint16, uint16_t)
 159 #define DEFINE_PROP_UINT32(_n, _s, _f, _d)                      \
 160     DEFINE_PROP_UNSIGNED(_n, _s, _f, _d, qdev_prop_uint32, uint32_t)
 161 #define DEFINE_PROP_INT32(_n, _s, _f, _d)                      \
 162     DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_int32, int32_t)
 163 #define DEFINE_PROP_UINT64(_n, _s, _f, _d)                      \
 164     DEFINE_PROP_UNSIGNED(_n, _s, _f, _d, qdev_prop_uint64, uint64_t)
 165 #define DEFINE_PROP_INT64(_n, _s, _f, _d)                      \
 166     DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_int64, int64_t)
 167 #define DEFINE_PROP_SIZE(_n, _s, _f, _d)                       \
 168     DEFINE_PROP_UNSIGNED(_n, _s, _f, _d, qdev_prop_size, uint64_t)
 169 #define DEFINE_PROP_PCI_DEVFN(_n, _s, _f, _d)                   \
 170     DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_pci_devfn, int32_t)
 171
 172 /*
 173  * Please avoid pointer properties.  If you must use them, you must
 174  * cover them in their device's class init function as follows:
 175  *
 176  * - If the property must be set, the device cannot be used with
 177  *   device_add, so add code like this:
 178  *   |* Reason: pointer property "NAME-OF-YOUR-PROP" *|
 179  *   DeviceClass *dc = DEVICE_CLASS(class);
 180  *   dc->user_creatable = false;
 181  *
 182  * - If the property may safely remain null, document it like this:
 183  *   |*
 184  *    * Note: pointer property "interrupt_vector" may remain null, thus
 185  *    * no need for dc->user_creatable = false;
 186  *    *|
 187  */
 188 #define DEFINE_PROP_PTR(_n, _s, _f)             \
 189     DEFINE_PROP(_n, _s, _f, qdev_prop_ptr, void*)
 190
 191 #define DEFINE_PROP_CHR(_n, _s, _f)             \
 192     DEFINE_PROP(_n, _s, _f, qdev_prop_chr, CharBackend)
 193 #define DEFINE_PROP_STRING(_n, _s, _f)             \
 194     DEFINE_PROP(_n, _s, _f, qdev_prop_string, char*)
 195 #define DEFINE_PROP_NETDEV(_n, _s, _f)             \
 196     DEFINE_PROP(_n, _s, _f, qdev_prop_netdev, NICPeers)
 197 #define DEFINE_PROP_DRIVE(_n, _s, _f) \
 198     DEFINE_PROP(_n, _s, _f, qdev_prop_drive, BlockBackend *)
 199 #define DEFINE_PROP_MACADDR(_n, _s, _f)         \
 200     DEFINE_PROP(_n, _s, _f, qdev_prop_macaddr, MACAddr)
 201 #define DEFINE_PROP_ON_OFF_AUTO(_n, _s, _f, _d) \
 202     DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_on_off_auto, OnOffAuto)
 203 #define DEFINE_PROP_LOSTTICKPOLICY(_n, _s, _f, _d) \
 204     DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_losttickpolicy, \
 205                         LostTickPolicy)
 206 #define DEFINE_PROP_BLOCKDEV_ON_ERROR(_n, _s, _f, _d) \
 207     DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_blockdev_on_error, \
 208                         BlockdevOnError)
 209 #define DEFINE_PROP_BIOS_CHS_TRANS(_n, _s, _f, _d) \
 210     DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_bios_chs_trans, int)
 211 #define DEFINE_PROP_BLOCKSIZE(_n, _s, _f) \
 212     DEFINE_PROP_UNSIGNED(_n, _s, _f, 0, qdev_prop_blocksize, uint16_t)
 213 #define DEFINE_PROP_PCI_HOST_DEVADDR(_n, _s, _f) \
 214     DEFINE_PROP(_n, _s, _f, qdev_prop_pci_host_devaddr, PCIHostDeviceAddress)
 215 #define DEFINE_PROP_MEMORY_REGION(_n, _s, _f)             \
 216     DEFINE_PROP(_n, _s, _f, qdev_prop_ptr, MemoryRegion *)
 217 #define DEFINE_PROP_OFF_AUTO_PCIBAR(_n, _s, _f, _d) \
 218     DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_off_auto_pcibar, \
 219                         OffAutoPCIBAR)
 220
 221 #define DEFINE_PROP_UUID(_name, _state, _field) {                  \
 222         .name      = (_name),                                      \
 223         .info      = &qdev_prop_uuid,                              \
 224         .offset    = offsetof(_state, _field)                      \
 225             + type_check(QemuUUID, typeof_field(_state, _field)),  \
 226         .set_default = true,                                       \
 227         }
 228
 229 #define DEFINE_PROP_END_OF_LIST()               \
 230     {}
 231
 232 /* Set properties between creation and init.  */
 233 void *qdev_get_prop_ptr(DeviceState *dev, Property *prop);
 234 void qdev_prop_set_bit(DeviceState *dev, const char *name, bool value);
 235 void qdev_prop_set_uint8(DeviceState *dev, const char *name, uint8_t value);
 236 void qdev_prop_set_uint16(DeviceState *dev, const char *name, uint16_t value);
 237 void qdev_prop_set_uint32(DeviceState *dev, const char *name, uint32_t value);
 238 void qdev_prop_set_int32(DeviceState *dev, const char *name, int32_t value);
 239 void qdev_prop_set_uint64(DeviceState *dev, const char *name, uint64_t value);
 240 void qdev_prop_set_string(DeviceState *dev, const char *name, const char *value);
 241 void qdev_prop_set_chr(DeviceState *dev, const char *name, Chardev *value);
 242 void qdev_prop_set_netdev(DeviceState *dev, const char *name, NetClientState *value);
 243 void qdev_prop_set_drive(DeviceState *dev, const char *name,
 244                          BlockBackend *value, Error **errp);
 245 void qdev_prop_set_macaddr(DeviceState *dev, const char *name,
 246                            const uint8_t *value);
 247 void qdev_prop_set_enum(DeviceState *dev, const char *name, int value);
 248 /* FIXME: Remove opaque pointer properties.  */
 249 void qdev_prop_set_ptr(DeviceState *dev, const char *name, void *value);
 250
 251 void qdev_prop_register_global(GlobalProperty *prop);
 252 void qdev_prop_register_global_list(GlobalProperty *props);
 253 int qdev_prop_check_globals(void);
 254 void qdev_prop_set_globals(DeviceState *dev);
 255 void error_set_from_qdev_prop_error(Error **errp, int ret, DeviceState *dev,
 256                                     Property *prop, const char *value);
 257
 258 /**
 259  * register_compat_prop:
 260  *
 261  * Register internal (not user-provided) global property, changing the
 262  * default value of a given property in a device type.  This can be used
 263  * for enabling machine-type compatibility or for enabling
 264  * accelerator-specific defaults in devices.
 265  *
 266  * The property values set using this function must be always valid and
 267  * never report setter errors, as the property will have
 268  * GlobalProperty::errp set to &error_abort.
 269  *
 270  * User-provided global properties should override internal global
 271  * properties, so callers of this function should ensure that it is
 272  * called before user-provided global properties are registered.
 273  *
 274  * @driver: Device type to be affected
 275  * @property: Property whose default value is going to be changed
 276  * @value: New default value for the property
 277  */
 278 void register_compat_prop(const char *driver, const char *property,
 279                           const char *value);
 280 /*
 281  * register_compat_props_array(): using register_compat_prop(), which
 282  * only registers internal global properties (which has lower priority
 283  * than user-provided global properties)
 284  */
 285 void register_compat_props_array(GlobalProperty *prop);
 286
 287 /**
 288  * qdev_property_add_static:
 289  * @dev: Device to add the property to.
 290  * @prop: The qdev property definition.
 291  * @errp: location to store error information.
 292  *
 293  * Add a static QOM property to @dev for qdev property @prop.
 294  * On error, store error in @errp.  Static properties access data in a struct.
 295  * The type of the QOM property is derived from prop->info.
 296  */
 297 void qdev_property_add_static(DeviceState *dev, Property *prop, Error **errp);
 298
 299 void qdev_alias_all_properties(DeviceState *target, Object *source);
 300
 301 /**
 302  * @qdev_prop_set_after_realize:
 303  * @dev: device
 304  * @name: name of property
 305  * @errp: indirect pointer to Error to be set
 306  * Set the Error object to report that an attempt was made to set a property
 307  * on a device after it has already been realized. This is a utility function
 308  * which allows property-setter functions to easily report the error in
 309  * a friendly format identifying both the device and the property.
 310  */
 311 void qdev_prop_set_after_realize(DeviceState *dev, const char *name,
 312                                  Error **errp);
 313
 314 /**
 315  * qdev_prop_allow_set_link_before_realize:
 316  *
 317  * Set the #Error object if an attempt is made to set the link after realize.
 318  * This function should be used as the check() argument to
 319  * object_property_add_link().
 320  */
 321 void qdev_prop_allow_set_link_before_realize(const Object *obj,
 322                                              const char *name,
 323                                              Object *val, Error **errp);
 324
 325 #endif