diff options
| -rw-r--r-- | hw/usb-hub.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/hw/usb-hub.c b/hw/usb-hub.c index 0f3b2dda0e..bd7641c4bf 100644 --- a/hw/usb-hub.c +++ b/hw/usb-hub.c @@ -220,6 +220,26 @@ static void usb_hub_complete(USBPort *port, USBPacket *packet) s->dev.port->ops->complete(s->dev.port, packet); } +static USBDevice *usb_hub_find_device(USBDevice *dev, uint8_t addr) +{ + USBHubState *s = DO_UPCAST(USBHubState, dev, dev); + USBHubPort *port; + USBDevice *downstream; + int i; + + for (i = 0; i < NUM_PORTS; i++) { + port = &s->ports[i]; + if (!(port->wPortStatus & PORT_STAT_ENABLE)) { + continue; + } + downstream = usb_find_device(&port->port, addr); + if (downstream != NULL) { + return downstream; + } + } + return NULL; +} + static void usb_hub_handle_reset(USBDevice *dev) { USBHubState *s = DO_UPCAST(USBHubState, dev, dev); @@ -541,6 +561,7 @@ static void usb_hub_class_initfn(ObjectClass *klass, void *data) uc->init = usb_hub_initfn; uc->product_desc = "QEMU USB Hub"; uc->usb_desc = &desc_hub; + uc->find_device = usb_hub_find_device; uc->handle_packet = usb_hub_handle_packet; uc->handle_reset = usb_hub_handle_reset; uc->handle_control = usb_hub_handle_control; |