1e198715e1
The function will be moved to common QOM code, as it is not specific to TYPE_DEVICE anymore. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: Stefan Berger <stefanb@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Acked-by: Paul Durrant <paul@xen.org> Message-Id: <20201211220529.2290218-31-ehabkost@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
257 lines
11 KiB
C
257 lines
11 KiB
C
#ifndef QEMU_QDEV_PROPERTIES_H
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#define QEMU_QDEV_PROPERTIES_H
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#include "hw/qdev-core.h"
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/**
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* Property:
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* @set_default: true if the default value should be set from @defval,
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* in which case @info->set_default_value must not be NULL
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* (if false then no default value is set by the property system
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* and the field retains whatever value it was given by instance_init).
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* @defval: default value for the property. This is used only if @set_default
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* is true.
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*/
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struct Property {
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const char *name;
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const PropertyInfo *info;
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ptrdiff_t offset;
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uint8_t bitnr;
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bool set_default;
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union {
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int64_t i;
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uint64_t u;
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} defval;
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int arrayoffset;
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const PropertyInfo *arrayinfo;
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int arrayfieldsize;
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const char *link_type;
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};
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struct PropertyInfo {
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const char *name;
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const char *description;
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const QEnumLookup *enum_table;
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int (*print)(Object *obj, Property *prop, char *dest, size_t len);
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void (*set_default_value)(ObjectProperty *op, const Property *prop);
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ObjectProperty *(*create)(ObjectClass *oc, const char *name,
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Property *prop);
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ObjectPropertyAccessor *get;
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ObjectPropertyAccessor *set;
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ObjectPropertyRelease *release;
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};
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/*** qdev-properties.c ***/
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extern const PropertyInfo qdev_prop_bit;
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extern const PropertyInfo qdev_prop_bit64;
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extern const PropertyInfo qdev_prop_bool;
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extern const PropertyInfo qdev_prop_enum;
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extern const PropertyInfo qdev_prop_uint8;
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extern const PropertyInfo qdev_prop_uint16;
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extern const PropertyInfo qdev_prop_uint32;
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extern const PropertyInfo qdev_prop_int32;
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extern const PropertyInfo qdev_prop_uint64;
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extern const PropertyInfo qdev_prop_int64;
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extern const PropertyInfo qdev_prop_size;
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extern const PropertyInfo qdev_prop_string;
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extern const PropertyInfo qdev_prop_on_off_auto;
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extern const PropertyInfo qdev_prop_size32;
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extern const PropertyInfo qdev_prop_arraylen;
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extern const PropertyInfo qdev_prop_link;
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#define DEFINE_PROP(_name, _state, _field, _prop, _type, ...) { \
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.name = (_name), \
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.info = &(_prop), \
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.offset = offsetof(_state, _field) \
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+ type_check(_type, typeof_field(_state, _field)), \
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__VA_ARGS__ \
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}
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#define DEFINE_PROP_SIGNED(_name, _state, _field, _defval, _prop, _type) \
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DEFINE_PROP(_name, _state, _field, _prop, _type, \
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.set_default = true, \
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.defval.i = (_type)_defval)
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#define DEFINE_PROP_SIGNED_NODEFAULT(_name, _state, _field, _prop, _type) \
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DEFINE_PROP(_name, _state, _field, _prop, _type)
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#define DEFINE_PROP_BIT(_name, _state, _field, _bit, _defval) \
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DEFINE_PROP(_name, _state, _field, qdev_prop_bit, uint32_t, \
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.bitnr = (_bit), \
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.set_default = true, \
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.defval.u = (bool)_defval)
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#define DEFINE_PROP_UNSIGNED(_name, _state, _field, _defval, _prop, _type) \
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DEFINE_PROP(_name, _state, _field, _prop, _type, \
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.set_default = true, \
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.defval.u = (_type)_defval)
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#define DEFINE_PROP_UNSIGNED_NODEFAULT(_name, _state, _field, _prop, _type) \
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DEFINE_PROP(_name, _state, _field, _prop, _type)
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#define DEFINE_PROP_BIT64(_name, _state, _field, _bit, _defval) \
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DEFINE_PROP(_name, _state, _field, qdev_prop_bit64, uint64_t, \
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.bitnr = (_bit), \
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.set_default = true, \
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.defval.u = (bool)_defval)
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#define DEFINE_PROP_BOOL(_name, _state, _field, _defval) \
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DEFINE_PROP(_name, _state, _field, qdev_prop_bool, bool, \
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.set_default = true, \
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.defval.u = (bool)_defval)
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#define PROP_ARRAY_LEN_PREFIX "len-"
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/**
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* DEFINE_PROP_ARRAY:
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* @_name: name of the array
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* @_state: name of the device state structure type
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* @_field: uint32_t field in @_state to hold the array length
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* @_arrayfield: field in @_state (of type '@_arraytype *') which
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* will point to the array
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* @_arrayprop: PropertyInfo defining what property the array elements have
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* @_arraytype: C type of the array elements
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*
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* Define device properties for a variable-length array _name. A
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* static property "len-arrayname" is defined. When the device creator
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* sets this property to the desired length of array, further dynamic
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* properties "arrayname[0]", "arrayname[1]", ... are defined so the
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* device creator can set the array element values. Setting the
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* "len-arrayname" property more than once is an error.
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*
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* When the array length is set, the @_field member of the device
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* struct is set to the array length, and @_arrayfield is set to point
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* to (zero-initialised) memory allocated for the array. For a zero
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* length array, @_field will be set to 0 and @_arrayfield to NULL.
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* It is the responsibility of the device deinit code to free the
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* @_arrayfield memory.
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*/
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#define DEFINE_PROP_ARRAY(_name, _state, _field, \
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_arrayfield, _arrayprop, _arraytype) \
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DEFINE_PROP((PROP_ARRAY_LEN_PREFIX _name), \
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_state, _field, qdev_prop_arraylen, uint32_t, \
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.set_default = true, \
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.defval.u = 0, \
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.arrayinfo = &(_arrayprop), \
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.arrayfieldsize = sizeof(_arraytype), \
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.arrayoffset = offsetof(_state, _arrayfield))
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#define DEFINE_PROP_LINK(_name, _state, _field, _type, _ptr_type) \
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DEFINE_PROP(_name, _state, _field, qdev_prop_link, _ptr_type, \
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.link_type = _type)
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#define DEFINE_PROP_UINT8(_n, _s, _f, _d) \
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DEFINE_PROP_UNSIGNED(_n, _s, _f, _d, qdev_prop_uint8, uint8_t)
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#define DEFINE_PROP_UINT16(_n, _s, _f, _d) \
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DEFINE_PROP_UNSIGNED(_n, _s, _f, _d, qdev_prop_uint16, uint16_t)
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#define DEFINE_PROP_UINT32(_n, _s, _f, _d) \
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DEFINE_PROP_UNSIGNED(_n, _s, _f, _d, qdev_prop_uint32, uint32_t)
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#define DEFINE_PROP_INT32(_n, _s, _f, _d) \
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DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_int32, int32_t)
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#define DEFINE_PROP_UINT64(_n, _s, _f, _d) \
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DEFINE_PROP_UNSIGNED(_n, _s, _f, _d, qdev_prop_uint64, uint64_t)
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#define DEFINE_PROP_INT64(_n, _s, _f, _d) \
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DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_int64, int64_t)
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#define DEFINE_PROP_SIZE(_n, _s, _f, _d) \
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DEFINE_PROP_UNSIGNED(_n, _s, _f, _d, qdev_prop_size, uint64_t)
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#define DEFINE_PROP_STRING(_n, _s, _f) \
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DEFINE_PROP(_n, _s, _f, qdev_prop_string, char*)
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#define DEFINE_PROP_ON_OFF_AUTO(_n, _s, _f, _d) \
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DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_on_off_auto, OnOffAuto)
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#define DEFINE_PROP_SIZE32(_n, _s, _f, _d) \
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DEFINE_PROP_UNSIGNED(_n, _s, _f, _d, qdev_prop_size32, uint32_t)
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#define DEFINE_PROP_END_OF_LIST() \
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{}
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/*
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* Set properties between creation and realization.
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*
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* Returns: %true on success, %false on error.
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*/
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bool qdev_prop_set_drive_err(DeviceState *dev, const char *name,
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BlockBackend *value, Error **errp);
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/*
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* Set properties between creation and realization.
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* @value must be valid. Each property may be set at most once.
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*/
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void qdev_prop_set_bit(DeviceState *dev, const char *name, bool value);
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void qdev_prop_set_uint8(DeviceState *dev, const char *name, uint8_t value);
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void qdev_prop_set_uint16(DeviceState *dev, const char *name, uint16_t value);
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void qdev_prop_set_uint32(DeviceState *dev, const char *name, uint32_t value);
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void qdev_prop_set_int32(DeviceState *dev, const char *name, int32_t value);
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void qdev_prop_set_uint64(DeviceState *dev, const char *name, uint64_t value);
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void qdev_prop_set_string(DeviceState *dev, const char *name, const char *value);
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void qdev_prop_set_chr(DeviceState *dev, const char *name, Chardev *value);
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void qdev_prop_set_netdev(DeviceState *dev, const char *name, NetClientState *value);
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void qdev_prop_set_drive(DeviceState *dev, const char *name,
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BlockBackend *value);
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void qdev_prop_set_macaddr(DeviceState *dev, const char *name,
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const uint8_t *value);
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void qdev_prop_set_enum(DeviceState *dev, const char *name, int value);
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void *object_field_prop_ptr(Object *obj, Property *prop);
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void qdev_prop_register_global(GlobalProperty *prop);
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const GlobalProperty *qdev_find_global_prop(Object *obj,
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const char *name);
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int qdev_prop_check_globals(void);
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void qdev_prop_set_globals(DeviceState *dev);
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void error_set_from_qdev_prop_error(Error **errp, int ret, Object *obj,
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const char *name, const char *value);
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/**
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* qdev_property_add_static:
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* @dev: Device to add the property to.
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* @prop: The qdev property definition.
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*
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* Add a static QOM property to @dev for qdev property @prop.
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* On error, store error in @errp. Static properties access data in a struct.
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* The type of the QOM property is derived from prop->info.
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*/
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void qdev_property_add_static(DeviceState *dev, Property *prop);
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/**
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* qdev_alias_all_properties: Create aliases on source for all target properties
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* @target: Device which has properties to be aliased
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* @source: Object to add alias properties to
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*
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* Add alias properties to the @source object for all qdev properties on
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* the @target DeviceState.
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*
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* This is useful when @target is an internal implementation object
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* owned by @source, and you want to expose all the properties of that
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* implementation object as properties on the @source object so that users
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* of @source can set them.
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*/
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void qdev_alias_all_properties(DeviceState *target, Object *source);
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/**
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* @qdev_prop_set_after_realize:
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* @dev: device
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* @name: name of property
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* @errp: indirect pointer to Error to be set
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* Set the Error object to report that an attempt was made to set a property
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* on a device after it has already been realized. This is a utility function
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* which allows property-setter functions to easily report the error in
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* a friendly format identifying both the device and the property.
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*/
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void qdev_prop_set_after_realize(DeviceState *dev, const char *name,
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Error **errp);
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/**
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* qdev_prop_allow_set_link_before_realize:
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*
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* Set the #Error object if an attempt is made to set the link after realize.
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* This function should be used as the check() argument to
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* object_property_add_link().
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*/
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void qdev_prop_allow_set_link_before_realize(const Object *obj,
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const char *name,
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Object *val, Error **errp);
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#endif
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