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qdev: add 64bit properties

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Needed for virtio features which go from 32bit to 64bit with virtio 1.0

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Gerd Hoffmann 2015-06-01 10:45:39 +02:00 committed by Michael S. Tsirkin
parent 434027badb
commit fdba6d967e
2 changed files with 68 additions and 0 deletions
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58
hw/core/qdev-properties.c
View File

@ -125,6 +125,64 @@ PropertyInfo qdev_prop_bit = {
.set = prop_set_bit,
};
/* Bit64 */
static uint64_t qdev_get_prop_mask64(Property *prop)
{
assert(prop->info == &qdev_prop_bit);
return 0x1 << prop->bitnr;
}
static void bit64_prop_set(DeviceState *dev, Property *props, bool val)
{
uint64_t *p = qdev_get_prop_ptr(dev, 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, void *opaque,
const char *name, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint64_t *p = qdev_get_prop_ptr(dev, prop);
bool value = (*p & qdev_get_prop_mask64(prop)) != 0;
visit_type_bool(v, &value, name, errp);
}
static void prop_set_bit64(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
Error *local_err = NULL;
bool value;
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
visit_type_bool(v, &value, name, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
bit64_prop_set(dev, prop, value);
}
PropertyInfo qdev_prop_bit64 = {
.name = "bool",
.description = "on/off",
.get = prop_get_bit64,
.set = prop_set_bit64,
};
/* --- bool --- */
static void get_bool(Object *obj, Visitor *v, void *opaque,

10
include/hw/qdev-properties.h
View File

@ -6,6 +6,7 @@
/*** qdev-properties.c ***/
extern PropertyInfo qdev_prop_bit;
extern PropertyInfo qdev_prop_bit64;
extern PropertyInfo qdev_prop_bool;
extern PropertyInfo qdev_prop_uint8;
extern PropertyInfo qdev_prop_uint16;
@ -50,6 +51,15 @@ extern PropertyInfo qdev_prop_arraylen;
.qtype = QTYPE_QBOOL, \
.defval = (bool)_defval, \
}
#define DEFINE_PROP_BIT64(_name, _state, _field, _bit, _defval) { \
.name = (_name), \
.info = &(qdev_prop_bit), \
.bitnr = (_bit), \
.offset = offsetof(_state, _field) \
+ type_check(uint64_t, typeof_field(_state, _field)), \
.qtype = QTYPE_QBOOL, \
.defval = (bool)_defval, \
}
#define DEFINE_PROP_BOOL(_name, _state, _field, _defval) { \
.name = (_name), \