Symbol: XHCI_DOORBELL
src/add-ons/kernel/busses/usb/xhci.cpp
2605
WriteDoorReg32(XHCI_DOORBELL(slot), XHCI_DOORBELL_TARGET(endpoint)
src/add-ons/kernel/busses/usb/xhci.cpp
2607
ReadDoorReg32(XHCI_DOORBELL(slot));