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authorGerd Hoffmann <kraxel@redhat.com>2009-07-15 13:43:31 +0200
committerAnthony Liguori <aliguori@us.ibm.com>2009-07-16 17:28:51 -0500
commitee6847d19be16c789b8bd4e553b7cd6701ba1245 (patch)
tree41845b3b1e8740ce97daf0582e124c6b6e0a6873 /hw/i2c.c
parentf114784f69ec3b9af342148025de14dbd1b429a5 (diff)
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qdev: rework device properties.
This patch is a major overhaul of the device properties. The properties are saved directly in the device state struct now, the linked list of property values is gone. Advantages: * We don't have to maintain the list with the property values. * The value in the property list and the value actually used by the device can't go out of sync any more (used to happen for the pci.devfn == -1 case) because there is only one place where the value is stored. * A record describing the property is required now, you can't set random properties any more. There are bus-specific and device-specific properties. The former should be used for properties common to all bus drivers. Typical use case is bus addressing, i.e. pci.devfn and i2c.address. Properties have a PropertyInfo struct attached with name, size and function pointers to parse and print properties. A few common property types have PropertyInfos defined in qdev-properties.c. Drivers are free to implement their own very special property parsers if needed. Properties can have default values. If unset they are zero-filled. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'hw/i2c.c')
-rw-r--r--hw/i2c.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/hw/i2c.c b/hw/i2c.c
index 98aa7fc..42a5d7a 100644
--- a/hw/i2c.c
+++ b/hw/i2c.c
@@ -20,6 +20,14 @@ struct i2c_bus
static struct BusInfo i2c_bus_info = {
.name = "I2C",
.size = sizeof(i2c_bus),
+ .props = (Property[]) {
+ {
+ .name = "address",
+ .info = &qdev_prop_uint32,
+ .offset = offsetof(struct i2c_slave, address),
+ },
+ {/* end of list */}
+ }
};
static void i2c_bus_save(QEMUFile *f, void *opaque)
@@ -151,7 +159,6 @@ static void i2c_slave_qdev_init(DeviceState *dev, DeviceInfo *base)
i2c_slave *s = I2C_SLAVE_FROM_QDEV(dev);
s->info = info;
- s->address = qdev_get_prop_int(dev, "address", 0);
info->init(s);
}
@@ -169,7 +176,7 @@ DeviceState *i2c_create_slave(i2c_bus *bus, const char *name, int addr)
DeviceState *dev;
dev = qdev_create(&bus->qbus, name);
- qdev_set_prop_int(dev, "address", addr);
+ qdev_prop_set_uint32(dev, "address", addr);
qdev_init(dev);
return dev;
}