include/hw/qdev-properties.h

   1 #ifndef QEMU_QDEV_PROPERTIES_H
   2 #define QEMU_QDEV_PROPERTIES_H
   3
   4 #include "hw/qdev-core.h"
   5
   6 /*** qdev-properties.c ***/
   7
   8 extern PropertyInfo qdev_prop_bit;
   9 extern PropertyInfo qdev_prop_bool;
  10 extern PropertyInfo qdev_prop_uint8;
  11 extern PropertyInfo qdev_prop_uint16;
  12 extern PropertyInfo qdev_prop_uint32;
  13 extern PropertyInfo qdev_prop_int32;
  14 extern PropertyInfo qdev_prop_uint64;
  15 extern PropertyInfo qdev_prop_size;
  16 extern PropertyInfo qdev_prop_string;
  17 extern PropertyInfo qdev_prop_chr;
  18 extern PropertyInfo qdev_prop_ptr;
  19 extern PropertyInfo qdev_prop_macaddr;
  20 extern PropertyInfo qdev_prop_losttickpolicy;
  21 extern PropertyInfo qdev_prop_bios_chs_trans;
  22 extern PropertyInfo qdev_prop_drive;
  23 extern PropertyInfo qdev_prop_netdev;
  24 extern PropertyInfo qdev_prop_vlan;
  25 extern PropertyInfo qdev_prop_pci_devfn;
  26 extern PropertyInfo qdev_prop_blocksize;
  27 extern PropertyInfo qdev_prop_pci_host_devaddr;
  28 extern PropertyInfo qdev_prop_arraylen;
  29
  30 #define DEFINE_PROP(_name, _state, _field, _prop, _type) { \
  31         .name      = (_name),                                    \
  32         .info      = &(_prop),                                   \
  33         .offset    = offsetof(_state, _field)                    \
  34             + type_check(_type, typeof_field(_state, _field)),   \
  35         }
  36 #define DEFINE_PROP_DEFAULT(_name, _state, _field, _defval, _prop, _type) { \
  37         .name      = (_name),                                           \
  38         .info      = &(_prop),                                          \
  39         .offset    = offsetof(_state, _field)                           \
  40             + type_check(_type,typeof_field(_state, _field)),           \
  41         .qtype     = QTYPE_QINT,                                        \
  42         .defval    = (_type)_defval,                                    \
  43         }
  44 #define DEFINE_PROP_BIT(_name, _state, _field, _bit, _defval) {  \
  45         .name      = (_name),                                    \
  46         .info      = &(qdev_prop_bit),                           \
  47         .bitnr    = (_bit),                                      \
  48         .offset    = offsetof(_state, _field)                    \
  49             + type_check(uint32_t,typeof_field(_state, _field)), \
  50         .qtype     = QTYPE_QBOOL,                                \
  51         .defval    = (bool)_defval,                              \
  52         }
  53
  54 #define DEFINE_PROP_BOOL(_name, _state, _field, _defval) {       \
  55         .name      = (_name),                                    \
  56         .info      = &(qdev_prop_bool),                          \
  57         .offset    = offsetof(_state, _field)                    \
  58             + type_check(bool, typeof_field(_state, _field)),    \
  59         .qtype     = QTYPE_QBOOL,                                \
  60         .defval    = (bool)_defval,                              \
  61         }
  62
  63 #define PROP_ARRAY_LEN_PREFIX "len-"
  64
  65 /**
  66  * DEFINE_PROP_ARRAY:
  67  * @_name: name of the array
  68  * @_state: name of the device state structure type
  69  * @_field: uint32_t field in @_state to hold the array length
  70  * @_arrayfield: field in @_state (of type '@_arraytype *') which
  71  *               will point to the array
  72  * @_arrayprop: PropertyInfo defining what property the array elements have
  73  * @_arraytype: C type of the array elements
  74  *
  75  * Define device properties for a variable-length array _name.  A
  76  * static property "len-arrayname" is defined. When the device creator
  77  * sets this property to the desired length of array, further dynamic
  78  * properties "arrayname[0]", "arrayname[1]", ...  are defined so the
  79  * device creator can set the array element values. Setting the
  80  * "len-arrayname" property more than once is an error.
  81  *
  82  * When the array length is set, the @_field member of the device
  83  * struct is set to the array length, and @_arrayfield is set to point
  84  * to (zero-initialised) memory allocated for the array.  For a zero
  85  * length array, @_field will be set to 0 and @_arrayfield to NULL.
  86  * It is the responsibility of the device deinit code to free the
  87  * @_arrayfield memory.
  88  */
  89 #define DEFINE_PROP_ARRAY(_name, _state, _field,                        \
  90                           _arrayfield, _arrayprop, _arraytype) {        \
  91         .name = (PROP_ARRAY_LEN_PREFIX _name),                          \
  92         .info = &(qdev_prop_arraylen),                                  \
  93         .offset = offsetof(_state, _field)                              \
  94             + type_check(uint32_t, typeof_field(_state, _field)),       \
  95         .qtype = QTYPE_QINT,                                            \
  96         .arrayinfo = &(_arrayprop),                                     \
  97         .arrayfieldsize = sizeof(_arraytype),                           \
  98         .arrayoffset = offsetof(_state, _arrayfield),                   \
  99         }
 100
 101 #define DEFINE_PROP_UINT8(_n, _s, _f, _d)                       \
 102     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_uint8, uint8_t)
 103 #define DEFINE_PROP_UINT16(_n, _s, _f, _d)                      \
 104     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_uint16, uint16_t)
 105 #define DEFINE_PROP_UINT32(_n, _s, _f, _d)                      \
 106     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_uint32, uint32_t)
 107 #define DEFINE_PROP_INT32(_n, _s, _f, _d)                      \
 108     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_int32, int32_t)
 109 #define DEFINE_PROP_UINT64(_n, _s, _f, _d)                      \
 110     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_uint64, uint64_t)
 111 #define DEFINE_PROP_SIZE(_n, _s, _f, _d)                       \
 112     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_size, uint64_t)
 113 #define DEFINE_PROP_PCI_DEVFN(_n, _s, _f, _d)                   \
 114     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_pci_devfn, int32_t)
 115
 116 /*
 117  * Please avoid pointer properties.  If you must use them, you must
 118  * cover them in their device's class init function as follows:
 119  *
 120  * - If the property must be set, the device cannot be used with
 121  *   device_add, so add code like this:
 122  *   |* Reason: pointer property "NAME-OF-YOUR-PROP" *|
 123  *   DeviceClass *dc = DEVICE_CLASS(class);
 124  *   dc->cannot_instantiate_with_device_add_yet = true;
 125  *
 126  * - If the property may safely remain null, document it like this:
 127  *   |*
 128  *    * Note: pointer property "interrupt_vector" may remain null, thus
 129  *    * no need for dc->cannot_instantiate_with_device_add_yet = true;
 130  *    *|
 131  */
 132 #define DEFINE_PROP_PTR(_n, _s, _f)             \
 133     DEFINE_PROP(_n, _s, _f, qdev_prop_ptr, void*)
 134
 135 #define DEFINE_PROP_CHR(_n, _s, _f)             \
 136     DEFINE_PROP(_n, _s, _f, qdev_prop_chr, CharDriverState*)
 137 #define DEFINE_PROP_STRING(_n, _s, _f)             \
 138     DEFINE_PROP(_n, _s, _f, qdev_prop_string, char*)
 139 #define DEFINE_PROP_NETDEV(_n, _s, _f)             \
 140     DEFINE_PROP(_n, _s, _f, qdev_prop_netdev, NICPeers)
 141 #define DEFINE_PROP_VLAN(_n, _s, _f)             \
 142     DEFINE_PROP(_n, _s, _f, qdev_prop_vlan, NICPeers)
 143 #define DEFINE_PROP_DRIVE(_n, _s, _f) \
 144     DEFINE_PROP(_n, _s, _f, qdev_prop_drive, BlockBackend *)
 145 #define DEFINE_PROP_MACADDR(_n, _s, _f)         \
 146     DEFINE_PROP(_n, _s, _f, qdev_prop_macaddr, MACAddr)
 147 #define DEFINE_PROP_LOSTTICKPOLICY(_n, _s, _f, _d) \
 148     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_losttickpolicy, \
 149                         LostTickPolicy)
 150 #define DEFINE_PROP_BIOS_CHS_TRANS(_n, _s, _f, _d) \
 151     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_bios_chs_trans, int)
 152 #define DEFINE_PROP_BLOCKSIZE(_n, _s, _f) \
 153     DEFINE_PROP_DEFAULT(_n, _s, _f, 0, qdev_prop_blocksize, uint16_t)
 154 #define DEFINE_PROP_PCI_HOST_DEVADDR(_n, _s, _f) \
 155     DEFINE_PROP(_n, _s, _f, qdev_prop_pci_host_devaddr, PCIHostDeviceAddress)
 156
 157 #define DEFINE_PROP_END_OF_LIST()               \
 158     {}
 159
 160 /* Set properties between creation and init.  */
 161 void *qdev_get_prop_ptr(DeviceState *dev, Property *prop);
 162 void qdev_prop_set_bit(DeviceState *dev, const char *name, bool value);
 163 void qdev_prop_set_uint8(DeviceState *dev, const char *name, uint8_t value);
 164 void qdev_prop_set_uint16(DeviceState *dev, const char *name, uint16_t value);
 165 void qdev_prop_set_uint32(DeviceState *dev, const char *name, uint32_t value);
 166 void qdev_prop_set_int32(DeviceState *dev, const char *name, int32_t value);
 167 void qdev_prop_set_uint64(DeviceState *dev, const char *name, uint64_t value);
 168 void qdev_prop_set_string(DeviceState *dev, const char *name, const char *value);
 169 void qdev_prop_set_chr(DeviceState *dev, const char *name, CharDriverState *value);
 170 void qdev_prop_set_netdev(DeviceState *dev, const char *name, NetClientState *value);
 171 int qdev_prop_set_drive(DeviceState *dev, const char *name,
 172                         BlockBackend *value) QEMU_WARN_UNUSED_RESULT;
 173 void qdev_prop_set_drive_nofail(DeviceState *dev, const char *name,
 174                                 BlockBackend *value);
 175 void qdev_prop_set_macaddr(DeviceState *dev, const char *name, uint8_t *value);
 176 void qdev_prop_set_enum(DeviceState *dev, const char *name, int value);
 177 /* FIXME: Remove opaque pointer properties.  */
 178 void qdev_prop_set_ptr(DeviceState *dev, const char *name, void *value);
 179
 180 void qdev_prop_register_global(GlobalProperty *prop);
 181 void qdev_prop_register_global_list(GlobalProperty *props);
 182 int qdev_prop_check_globals(void);
 183 void qdev_prop_set_globals(DeviceState *dev);
 184 void error_set_from_qdev_prop_error(Error **errp, int ret, DeviceState *dev,
 185                                     Property *prop, const char *value);
 186
 187 /**
 188  * @qdev_property_add_static - add a @Property to a device referencing a
 189  * field in a struct.
 190  */
 191 void qdev_property_add_static(DeviceState *dev, Property *prop, Error **errp);
 192
 193 void qdev_alias_all_properties(DeviceState *target, Object *source);
 194
 195 /**
 196  * @qdev_prop_set_after_realize:
 197  * @dev: device
 198  * @name: name of property
 199  * @errp: indirect pointer to Error to be set
 200  * Set the Error object to report that an attempt was made to set a property
 201  * on a device after it has already been realized. This is a utility function
 202  * which allows property-setter functions to easily report the error in
 203  * a friendly format identifying both the device and the property.
 204  */
 205 void qdev_prop_set_after_realize(DeviceState *dev, const char *name,
 206                                  Error **errp);
 207
 208 /**
 209  * qdev_prop_allow_set_link_before_realize:
 210  *
 211  * Set the #Error object if an attempt is made to set the link after realize.
 212  * This function should be used as the check() argument to
 213  * object_property_add_link().
 214  */
 215 void qdev_prop_allow_set_link_before_realize(Object *obj, const char *name,
 216                                              Object *val, Error **errp);
 217
 218 #endif