usb core: use qdev for -usbdevice
This patchs adds infrastructure to handle -usbdevice via qdev callbacks.
USBDeviceInfo gets a name field (for the -usbdevice driver name) and a
callback for -usbdevice parameter parsing.
The new usbdevice_create() function walks the qdev driver list and looks
for a usb driver with a matching name. When a parameter parsing
callback is present it is called, otherwise the device is created via
usb_create_simple().
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/hw/usb-bus.c b/hw/usb-bus.c
index 98987a1..28b517f 100644
--- a/hw/usb-bus.c
+++ b/hw/usb-bus.c
@@ -252,3 +252,50 @@
}
}
+/* handle legacy -usbdevice cmd line option */
+USBDevice *usbdevice_create(const char *cmdline)
+{
+ USBBus *bus = usb_bus_find(-1 /* any */);
+ DeviceInfo *info;
+ USBDeviceInfo *usb;
+ char driver[32], *params;
+ int len;
+
+ params = strchr(cmdline,':');
+ if (params) {
+ params++;
+ len = params - cmdline;
+ if (len > sizeof(driver))
+ len = sizeof(driver);
+ pstrcpy(driver, len, cmdline);
+ } else {
+ pstrcpy(driver, sizeof(driver), cmdline);
+ }
+
+ for (info = device_info_list; info != NULL; info = info->next) {
+ if (info->bus_info != &usb_bus_info)
+ continue;
+ usb = DO_UPCAST(USBDeviceInfo, qdev, info);
+ if (usb->usbdevice_name == NULL)
+ continue;
+ if (strcmp(usb->usbdevice_name, driver) != 0)
+ continue;
+ break;
+ }
+ if (info == NULL) {
+#if 0
+ /* no error because some drivers are not converted (yet) */
+ qemu_error("usbdevice %s not found\n", driver);
+#endif
+ return NULL;
+ }
+
+ if (!usb->usbdevice_init) {
+ if (params) {
+ qemu_error("usbdevice %s accepts no params\n", driver);
+ return NULL;
+ }
+ return usb_create_simple(bus, usb->qdev.name);
+ }
+ return usb->usbdevice_init(params);
+}
