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c7525b183c
xemu/hw/core/qdev-properties.c
Eduardo Habkost c7525b183c qdev: Make error_set_from_qdev_prop_error() get Object* argument 
Make the code more generic and not specific to TYPE_DEVICE.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com> #s390 parts
Message-Id: <20201211220529.2290218-13-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2020-12-15 10:02:07 -05:00

1042 lines
28 KiB
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#include "qemu/osdep.h"
#include "hw/qdev-properties.h"
#include "qapi/error.h"
#include "qapi/qapi-types-misc.h"
#include "qapi/qmp/qerror.h"
#include "qemu/ctype.h"
#include "qemu/error-report.h"
#include "qapi/visitor.h"
#include "qemu/uuid.h"
#include "qemu/units.h"
#include "qemu/cutils.h"
#include "qdev-prop-internal.h"
void qdev_prop_set_after_realize(DeviceState *dev, const char *name,
Error **errp)
{
if (dev->id) {
error_setg(errp, "Attempt to set property '%s' on device '%s' "
"(type '%s') after it was realized", name, dev->id,
object_get_typename(OBJECT(dev)));
} else {
error_setg(errp, "Attempt to set property '%s' on anonymous device "
"(type '%s') after it was realized", name,
object_get_typename(OBJECT(dev)));
}
}
void qdev_prop_allow_set_link_before_realize(const Object *obj,
const char *name,
Object *val, Error **errp)
{
DeviceState *dev = DEVICE(obj);
if (dev->realized) {
error_setg(errp, "Attempt to set link property '%s' on device '%s' "
"(type '%s') after it was realized",
name, dev->id, object_get_typename(obj));
}
}
void *qdev_get_prop_ptr(Object *obj, Property *prop)
{
void *ptr = obj;
ptr += prop->offset;
return ptr;
}
void qdev_propinfo_get_enum(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
Property *prop = opaque;
int *ptr = qdev_get_prop_ptr(obj, prop);
visit_type_enum(v, prop->name, ptr, prop->info->enum_table, errp);
}
void qdev_propinfo_set_enum(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
int *ptr = qdev_get_prop_ptr(obj, prop);
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
visit_type_enum(v, prop->name, ptr, prop->info->enum_table, errp);
}
void qdev_propinfo_set_default_value_enum(ObjectProperty *op,
const Property *prop)
{
object_property_set_default_str(op,
qapi_enum_lookup(prop->info->enum_table, prop->defval.i));
}
const PropertyInfo qdev_prop_enum = {
.name = "enum",
.get = qdev_propinfo_get_enum,
.set = qdev_propinfo_set_enum,
.set_default_value = qdev_propinfo_set_default_value_enum,
};
/* Bit */
static uint32_t qdev_get_prop_mask(Property *prop)
{
assert(prop->info == &qdev_prop_bit);
return 0x1 << prop->bitnr;
}
static void bit_prop_set(Object *obj, Property *props, bool val)
{
uint32_t *p = qdev_get_prop_ptr(obj, props);
uint32_t mask = qdev_get_prop_mask(props);
if (val) {
*p |= mask;
} else {
*p &= ~mask;
}
}
static void prop_get_bit(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
Property *prop = opaque;
uint32_t *p = qdev_get_prop_ptr(obj, prop);
bool value = (*p & qdev_get_prop_mask(prop)) != 0;
visit_type_bool(v, name, &value, errp);
}
static void prop_set_bit(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
bool value;
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
if (!visit_type_bool(v, name, &value, errp)) {
return;
}
bit_prop_set(obj, prop, value);
}
static void set_default_value_bool(ObjectProperty *op, const Property *prop)
{
object_property_set_default_bool(op, prop->defval.u);
}
const PropertyInfo qdev_prop_bit = {
.name = "bool",
.description = "on/off",
.get = prop_get_bit,
.set = prop_set_bit,
.set_default_value = set_default_value_bool,
};
/* Bit64 */
static uint64_t qdev_get_prop_mask64(Property *prop)
{
assert(prop->info == &qdev_prop_bit64);
return 0x1ull << prop->bitnr;
}
static void bit64_prop_set(Object *obj, Property *props, bool val)
{
uint64_t *p = qdev_get_prop_ptr(obj, props);
uint64_t mask = qdev_get_prop_mask64(props);
if (val) {
*p |= mask;
} else {
*p &= ~mask;
}
}
static void prop_get_bit64(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
Property *prop = opaque;
uint64_t *p = qdev_get_prop_ptr(obj, prop);
bool value = (*p & qdev_get_prop_mask64(prop)) != 0;
visit_type_bool(v, name, &value, errp);
}
static void prop_set_bit64(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
bool value;
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
if (!visit_type_bool(v, name, &value, errp)) {
return;
}
bit64_prop_set(obj, prop, value);
}
const PropertyInfo qdev_prop_bit64 = {
.name = "bool",
.description = "on/off",
.get = prop_get_bit64,
.set = prop_set_bit64,
.set_default_value = set_default_value_bool,
};
/* --- bool --- */
static void get_bool(Object *obj, Visitor *v, const char *name, void *opaque,
Error **errp)
{
Property *prop = opaque;
bool *ptr = qdev_get_prop_ptr(obj, prop);
visit_type_bool(v, name, ptr, errp);
}
static void set_bool(Object *obj, Visitor *v, const char *name, void *opaque,
Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
bool *ptr = qdev_get_prop_ptr(obj, prop);
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
visit_type_bool(v, name, ptr, errp);
}
const PropertyInfo qdev_prop_bool = {
.name = "bool",
.get = get_bool,
.set = set_bool,
.set_default_value = set_default_value_bool,
};
/* --- 8bit integer --- */
static void get_uint8(Object *obj, Visitor *v, const char *name, void *opaque,
Error **errp)
{
Property *prop = opaque;
uint8_t *ptr = qdev_get_prop_ptr(obj, prop);
visit_type_uint8(v, name, ptr, errp);
}
static void set_uint8(Object *obj, Visitor *v, const char *name, void *opaque,
Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint8_t *ptr = qdev_get_prop_ptr(obj, prop);
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
visit_type_uint8(v, name, ptr, errp);
}
void qdev_propinfo_set_default_value_int(ObjectProperty *op,
const Property *prop)
{
object_property_set_default_int(op, prop->defval.i);
}
void qdev_propinfo_set_default_value_uint(ObjectProperty *op,
const Property *prop)
{
object_property_set_default_uint(op, prop->defval.u);
}
const PropertyInfo qdev_prop_uint8 = {
.name = "uint8",
.get = get_uint8,
.set = set_uint8,
.set_default_value = qdev_propinfo_set_default_value_uint,
};
/* --- 16bit integer --- */
void qdev_propinfo_get_uint16(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
Property *prop = opaque;
uint16_t *ptr = qdev_get_prop_ptr(obj, prop);
visit_type_uint16(v, name, ptr, errp);
}
static void set_uint16(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint16_t *ptr = qdev_get_prop_ptr(obj, prop);
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
visit_type_uint16(v, name, ptr, errp);
}
const PropertyInfo qdev_prop_uint16 = {
.name = "uint16",
.get = qdev_propinfo_get_uint16,
.set = set_uint16,
.set_default_value = qdev_propinfo_set_default_value_uint,
};
/* --- 32bit integer --- */
static void get_uint32(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
Property *prop = opaque;
uint32_t *ptr = qdev_get_prop_ptr(obj, prop);
visit_type_uint32(v, name, ptr, errp);
}
static void set_uint32(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint32_t *ptr = qdev_get_prop_ptr(obj, prop);
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
visit_type_uint32(v, name, ptr, errp);
}
void qdev_propinfo_get_int32(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
Property *prop = opaque;
int32_t *ptr = qdev_get_prop_ptr(obj, prop);
visit_type_int32(v, name, ptr, errp);
}
static void set_int32(Object *obj, Visitor *v, const char *name, void *opaque,
Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
int32_t *ptr = qdev_get_prop_ptr(obj, prop);
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
visit_type_int32(v, name, ptr, errp);
}
const PropertyInfo qdev_prop_uint32 = {
.name = "uint32",
.get = get_uint32,
.set = set_uint32,
.set_default_value = qdev_propinfo_set_default_value_uint,
};
const PropertyInfo qdev_prop_int32 = {
.name = "int32",
.get = qdev_propinfo_get_int32,
.set = set_int32,
.set_default_value = qdev_propinfo_set_default_value_int,
};
/* --- 64bit integer --- */
static void get_uint64(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
Property *prop = opaque;
uint64_t *ptr = qdev_get_prop_ptr(obj, prop);
visit_type_uint64(v, name, ptr, errp);
}
static void set_uint64(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint64_t *ptr = qdev_get_prop_ptr(obj, prop);
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
visit_type_uint64(v, name, ptr, errp);
}
static void get_int64(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
Property *prop = opaque;
int64_t *ptr = qdev_get_prop_ptr(obj, prop);
visit_type_int64(v, name, ptr, errp);
}
static void set_int64(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
int64_t *ptr = qdev_get_prop_ptr(obj, prop);
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
visit_type_int64(v, name, ptr, errp);
}
const PropertyInfo qdev_prop_uint64 = {
.name = "uint64",
.get = get_uint64,
.set = set_uint64,
.set_default_value = qdev_propinfo_set_default_value_uint,
};
const PropertyInfo qdev_prop_int64 = {
.name = "int64",
.get = get_int64,
.set = set_int64,
.set_default_value = qdev_propinfo_set_default_value_int,
};
/* --- string --- */
static void release_string(Object *obj, const char *name, void *opaque)
{
Property *prop = opaque;
g_free(*(char **)qdev_get_prop_ptr(obj, prop));
}
static void get_string(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
Property *prop = opaque;
char **ptr = qdev_get_prop_ptr(obj, prop);
if (!*ptr) {
char *str = (char *)"";
visit_type_str(v, name, &str, errp);
} else {
visit_type_str(v, name, ptr, errp);
}
}
static void set_string(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
char **ptr = qdev_get_prop_ptr(obj, prop);
char *str;
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
if (!visit_type_str(v, name, &str, errp)) {
return;
}
g_free(*ptr);
*ptr = str;
}
const PropertyInfo qdev_prop_string = {
.name = "str",
.release = release_string,
.get = get_string,
.set = set_string,
};
/* --- on/off/auto --- */
const PropertyInfo qdev_prop_on_off_auto = {
.name = "OnOffAuto",
.description = "on/off/auto",
.enum_table = &OnOffAuto_lookup,
.get = qdev_propinfo_get_enum,
.set = qdev_propinfo_set_enum,
.set_default_value = qdev_propinfo_set_default_value_enum,
};
/* --- 32bit unsigned int 'size' type --- */
void qdev_propinfo_get_size32(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
Property *prop = opaque;
uint32_t *ptr = qdev_get_prop_ptr(obj, prop);
uint64_t value = *ptr;
visit_type_size(v, name, &value, errp);
}
static void set_size32(Object *obj, Visitor *v, const char *name, void *opaque,
Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint32_t *ptr = qdev_get_prop_ptr(obj, prop);
uint64_t value;
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
if (!visit_type_size(v, name, &value, errp)) {
return;
}
if (value > UINT32_MAX) {
error_setg(errp,
"Property %s.%s doesn't take value %" PRIu64
" (maximum: %u)",
object_get_typename(obj), name, value, UINT32_MAX);
return;
}
*ptr = value;
}
const PropertyInfo qdev_prop_size32 = {
.name = "size",
.get = qdev_propinfo_get_size32,
.set = set_size32,
.set_default_value = qdev_propinfo_set_default_value_uint,
};
/* --- UUID --- */
static void get_uuid(Object *obj, Visitor *v, const char *name, void *opaque,
Error **errp)
{
Property *prop = opaque;
QemuUUID *uuid = qdev_get_prop_ptr(obj, prop);
char buffer[UUID_FMT_LEN + 1];
char *p = buffer;
qemu_uuid_unparse(uuid, buffer);
visit_type_str(v, name, &p, errp);
}
#define UUID_VALUE_AUTO "auto"
static void set_uuid(Object *obj, Visitor *v, const char *name, void *opaque,
Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
QemuUUID *uuid = qdev_get_prop_ptr(obj, prop);
char *str;
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
if (!visit_type_str(v, name, &str, errp)) {
return;
}
if (!strcmp(str, UUID_VALUE_AUTO)) {
qemu_uuid_generate(uuid);
} else if (qemu_uuid_parse(str, uuid) < 0) {
error_set_from_qdev_prop_error(errp, EINVAL, obj, prop, str);
}
g_free(str);
}
static void set_default_uuid_auto(ObjectProperty *op, const Property *prop)
{
object_property_set_default_str(op, UUID_VALUE_AUTO);
}
const PropertyInfo qdev_prop_uuid = {
.name = "str",
.description = "UUID (aka GUID) or \"" UUID_VALUE_AUTO
"\" for random value (default)",
.get = get_uuid,
.set = set_uuid,
.set_default_value = set_default_uuid_auto,
};
/* --- support for array properties --- */
/* Used as an opaque for the object properties we add for each
* array element. Note that the struct Property must be first
* in the struct so that a pointer to this works as the opaque
* for the underlying element's property hooks as well as for
* our own release callback.
*/
typedef struct {
struct Property prop;
char *propname;
ObjectPropertyRelease *release;
} ArrayElementProperty;
/* object property release callback for array element properties:
* we call the underlying element's property release hook, and
* then free the memory we allocated when we added the property.
*/
static void array_element_release(Object *obj, const char *name, void *opaque)
{
ArrayElementProperty *p = opaque;
if (p->release) {
p->release(obj, name, opaque);
}
g_free(p->propname);
g_free(p);
}
static void set_prop_arraylen(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
/* Setter for the property which defines the length of a
* variable-sized property array. As well as actually setting the
* array-length field in the device struct, we have to create the
* array itself and dynamically add the corresponding properties.
*/
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint32_t *alenptr = qdev_get_prop_ptr(obj, prop);
void **arrayptr = (void *)dev + prop->arrayoffset;
void *eltptr;
const char *arrayname;
int i;
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
if (*alenptr) {
error_setg(errp, "array size property %s may not be set more than once",
name);
return;
}
if (!visit_type_uint32(v, name, alenptr, errp)) {
return;
}
if (!*alenptr) {
return;
}
/* DEFINE_PROP_ARRAY guarantees that name should start with this prefix;
* strip it off so we can get the name of the array itself.
*/
assert(strncmp(name, PROP_ARRAY_LEN_PREFIX,
strlen(PROP_ARRAY_LEN_PREFIX)) == 0);
arrayname = name + strlen(PROP_ARRAY_LEN_PREFIX);
/* Note that it is the responsibility of the individual device's deinit
* to free the array proper.
*/
*arrayptr = eltptr = g_malloc0(*alenptr * prop->arrayfieldsize);
for (i = 0; i < *alenptr; i++, eltptr += prop->arrayfieldsize) {
char *propname = g_strdup_printf("%s[%d]", arrayname, i);
ArrayElementProperty *arrayprop = g_new0(ArrayElementProperty, 1);
arrayprop->release = prop->arrayinfo->release;
arrayprop->propname = propname;
arrayprop->prop.info = prop->arrayinfo;
arrayprop->prop.name = propname;
/* This ugly piece of pointer arithmetic sets up the offset so
* that when the underlying get/set hooks call qdev_get_prop_ptr
* they get the right answer despite the array element not actually
* being inside the device struct.
*/
arrayprop->prop.offset = eltptr - (void *)dev;
assert(qdev_get_prop_ptr(obj, &arrayprop->prop) == eltptr);
object_property_add(obj, propname,
arrayprop->prop.info->name,
arrayprop->prop.info->get,
arrayprop->prop.info->set,
array_element_release,
arrayprop);
}
}
const PropertyInfo qdev_prop_arraylen = {
.name = "uint32",
.get = get_uint32,
.set = set_prop_arraylen,
.set_default_value = qdev_propinfo_set_default_value_uint,
};
/* --- public helpers --- */
static Property *qdev_prop_walk(Property *props, const char *name)
{
if (!props) {
return NULL;
}
while (props->name) {
if (strcmp(props->name, name) == 0) {
return props;
}
props++;
}
return NULL;
}
static Property *qdev_prop_find(DeviceState *dev, const char *name)
{
ObjectClass *class;
Property *prop;
/* device properties */
class = object_get_class(OBJECT(dev));
do {
prop = qdev_prop_walk(DEVICE_CLASS(class)->props_, name);
if (prop) {
return prop;
}
class = object_class_get_parent(class);
} while (class != object_class_by_name(TYPE_DEVICE));
return NULL;
}
void error_set_from_qdev_prop_error(Error **errp, int ret, Object *obj,
Property *prop, const char *value)
{
switch (ret) {
case -EEXIST:
error_setg(errp, "Property '%s.%s' can't take value '%s', it's in use",
object_get_typename(obj), prop->name, value);
break;
default:
case -EINVAL:
error_setg(errp, QERR_PROPERTY_VALUE_BAD,
object_get_typename(obj), prop->name, value);
break;
case -ENOENT:
error_setg(errp, "Property '%s.%s' can't find value '%s'",
object_get_typename(obj), prop->name, value);
break;
case 0:
break;
}
}
void qdev_prop_set_bit(DeviceState *dev, const char *name, bool value)
{
object_property_set_bool(OBJECT(dev), name, value, &error_abort);
}
void qdev_prop_set_uint8(DeviceState *dev, const char *name, uint8_t value)
{
object_property_set_int(OBJECT(dev), name, value, &error_abort);
}
void qdev_prop_set_uint16(DeviceState *dev, const char *name, uint16_t value)
{
object_property_set_int(OBJECT(dev), name, value, &error_abort);
}
void qdev_prop_set_uint32(DeviceState *dev, const char *name, uint32_t value)
{
object_property_set_int(OBJECT(dev), name, value, &error_abort);
}
void qdev_prop_set_int32(DeviceState *dev, const char *name, int32_t value)
{
object_property_set_int(OBJECT(dev), name, value, &error_abort);
}
void qdev_prop_set_uint64(DeviceState *dev, const char *name, uint64_t value)
{
object_property_set_int(OBJECT(dev), name, value, &error_abort);
}
void qdev_prop_set_string(DeviceState *dev, const char *name, const char *value)
{
object_property_set_str(OBJECT(dev), name, value, &error_abort);
}
void qdev_prop_set_enum(DeviceState *dev, const char *name, int value)
{
Property *prop;
prop = qdev_prop_find(dev, name);
object_property_set_str(OBJECT(dev), name,
qapi_enum_lookup(prop->info->enum_table, value),
&error_abort);
}
static GPtrArray *global_props(void)
{
static GPtrArray *gp;
if (!gp) {
gp = g_ptr_array_new();
}
return gp;
}
void qdev_prop_register_global(GlobalProperty *prop)
{
g_ptr_array_add(global_props(), prop);
}
const GlobalProperty *qdev_find_global_prop(Object *obj,
const char *name)
{
GPtrArray *props = global_props();
const GlobalProperty *p;
int i;
for (i = 0; i < props->len; i++) {
p = g_ptr_array_index(props, i);
if (object_dynamic_cast(obj, p->driver)
&& !strcmp(p->property, name)) {
return p;
}
}
return NULL;
}
int qdev_prop_check_globals(void)
{
int i, ret = 0;
for (i = 0; i < global_props()->len; i++) {
GlobalProperty *prop;
ObjectClass *oc;
DeviceClass *dc;
prop = g_ptr_array_index(global_props(), i);
if (prop->used) {
continue;
}
oc = object_class_by_name(prop->driver);
oc = object_class_dynamic_cast(oc, TYPE_DEVICE);
if (!oc) {
warn_report("global %s.%s has invalid class name",
prop->driver, prop->property);
ret = 1;
continue;
}
dc = DEVICE_CLASS(oc);
if (!dc->hotpluggable && !prop->used) {
warn_report("global %s.%s=%s not used",
prop->driver, prop->property, prop->value);
ret = 1;
continue;
}
}
return ret;
}
void qdev_prop_set_globals(DeviceState *dev)
{
object_apply_global_props(OBJECT(dev), global_props(),
dev->hotplugged ? NULL : &error_fatal);
}
/* --- 64bit unsigned int 'size' type --- */
static void get_size(Object *obj, Visitor *v, const char *name, void *opaque,
Error **errp)
{
Property *prop = opaque;
uint64_t *ptr = qdev_get_prop_ptr(obj, prop);
visit_type_size(v, name, ptr, errp);
}
static void set_size(Object *obj, Visitor *v, const char *name, void *opaque,
Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint64_t *ptr = qdev_get_prop_ptr(obj, prop);
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
visit_type_size(v, name, ptr, errp);
}
const PropertyInfo qdev_prop_size = {
.name = "size",
.get = get_size,
.set = set_size,
.set_default_value = qdev_propinfo_set_default_value_uint,
};
/* --- object link property --- */
static void create_link_property(ObjectClass *oc, Property *prop)
{
object_class_property_add_link(oc, prop->name, prop->link_type,
prop->offset,
qdev_prop_allow_set_link_before_realize,
OBJ_PROP_LINK_STRONG);
}
const PropertyInfo qdev_prop_link = {
.name = "link",
.create = create_link_property,
};
void qdev_property_add_static(DeviceState *dev, Property *prop)
{
Object *obj = OBJECT(dev);
ObjectProperty *op;
assert(!prop->info->create);
op = object_property_add(obj, prop->name, prop->info->name,
prop->info->get, prop->info->set,
prop->info->release,
prop);
object_property_set_description(obj, prop->name,
prop->info->description);
if (prop->set_default) {
prop->info->set_default_value(op, prop);
if (op->init) {
op->init(obj, op);
}
}
}
static void qdev_class_add_property(DeviceClass *klass, Property *prop)
{
ObjectClass *oc = OBJECT_CLASS(klass);
if (prop->info->create) {
prop->info->create(oc, prop);
} else {
ObjectProperty *op;
op = object_class_property_add(oc,
prop->name, prop->info->name,
prop->info->get, prop->info->set,
prop->info->release,
prop);
if (prop->set_default) {
prop->info->set_default_value(op, prop);
}
}
object_class_property_set_description(oc, prop->name,
prop->info->description);
}
/**
* Legacy property handling
*/
static void qdev_get_legacy_property(Object *obj, Visitor *v,
const char *name, void *opaque,
Error **errp)
{
Property *prop = opaque;
char buffer[1024];
char *ptr = buffer;
prop->info->print(obj, prop, buffer, sizeof(buffer));
visit_type_str(v, name, &ptr, errp);
}
/**
* qdev_class_add_legacy_property:
* @dev: Device to add the property to.
* @prop: The qdev property definition.
*
* Add a legacy QOM property to @dev for qdev property @prop.
*
* Legacy properties are string versions of QOM properties. The format of
* the string depends on the property type. Legacy properties are only
* needed for "info qtree".
*
* Do not use this in new code! QOM Properties added through this interface
* will be given names in the "legacy" namespace.
*/
static void qdev_class_add_legacy_property(DeviceClass *dc, Property *prop)
{
g_autofree char *name = NULL;
/* Register pointer properties as legacy properties */
if (!prop->info->print && prop->info->get) {
return;
}
name = g_strdup_printf("legacy-%s", prop->name);
object_class_property_add(OBJECT_CLASS(dc), name, "str",
prop->info->print ? qdev_get_legacy_property : prop->info->get,
NULL, NULL, prop);
}
void device_class_set_props(DeviceClass *dc, Property *props)
{
Property *prop;
dc->props_ = props;
for (prop = props; prop && prop->name; prop++) {
qdev_class_add_legacy_property(dc, prop);
qdev_class_add_property(dc, prop);
}
}
void qdev_alias_all_properties(DeviceState *target, Object *source)
{
ObjectClass *class;
Property *prop;
class = object_get_class(OBJECT(target));
do {
DeviceClass *dc = DEVICE_CLASS(class);
for (prop = dc->props_; prop && prop->name; prop++) {
object_property_add_alias(source, prop->name,
OBJECT(target), prop->name);
}
class = object_class_get_parent(class);
} while (class != object_class_by_name(TYPE_DEVICE));
}
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