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>
diff --git a/hw/xilinx_ethlite.c b/hw/xilinx_ethlite.c
index f4b40c7..b3fd25b 100644
--- a/hw/xilinx_ethlite.c
+++ b/hw/xilinx_ethlite.c
@@ -53,8 +53,8 @@
qemu_irq irq;
VLANClientState *vc;
- unsigned int c_tx_pingpong;
- unsigned int c_rx_pingpong;
+ uint32_t c_tx_pingpong;
+ uint32_t c_rx_pingpong;
unsigned int txbuf;
unsigned int rxbuf;
@@ -213,8 +213,6 @@
int regs;
sysbus_init_irq(dev, &s->irq);
- s->c_tx_pingpong = qdev_get_prop_int(&dev->qdev, "txpingpong", 1);
- s->c_rx_pingpong = qdev_get_prop_int(&dev->qdev, "rxpingpong", 1);
s->rxbuf = 0;
regs = cpu_register_io_memory(eth_read, eth_write, s);
@@ -225,10 +223,29 @@
eth_can_rx, eth_rx, NULL, eth_cleanup, s);
}
+static SysBusDeviceInfo xilinx_ethlite_info = {
+ .init = xilinx_ethlite_init,
+ .qdev.name = "xilinx,ethlite",
+ .qdev.size = sizeof(struct xlx_ethlite),
+ .qdev.props = (Property[]) {
+ {
+ .name = "txpingpong",
+ .info = &qdev_prop_uint32,
+ .offset = offsetof(struct xlx_ethlite, c_tx_pingpong),
+ .defval = (uint32_t[]) { 1 },
+ },{
+ .name = "rxpingpong",
+ .info = &qdev_prop_uint32,
+ .offset = offsetof(struct xlx_ethlite, c_rx_pingpong),
+ .defval = (uint32_t[]) { 1 },
+ },
+ {/* end of list */}
+ }
+};
+
static void xilinx_ethlite_register(void)
{
- sysbus_register_dev("xilinx,ethlite", sizeof (struct xlx_ethlite),
- xilinx_ethlite_init);
+ sysbus_register_withprop(&xilinx_ethlite_info);
}
device_init(xilinx_ethlite_register)
