1 // Copyright 2019 The ChromiumOS Authors 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 use super::xhci_transfer::XhciTransfer; 6 use crate::usb::host_backend::error::Result; 7 use usb_util::DeviceSpeed; 8 9 /// Address of this usb device, as in Set Address standard usb device request. 10 pub type UsbDeviceAddress = u32; 11 12 /// The type USB device provided by the backend device. 13 #[derive(PartialEq, Eq)] 14 pub enum BackendType { 15 Usb2, 16 Usb3, 17 } 18 19 /// Xhci backend device is a virtual device connected to xHCI controller. It handles xhci transfers. 20 pub trait XhciBackendDevice: Send { 21 /// Returns the type of USB device provided by this device. get_backend_type(&self) -> BackendType22 fn get_backend_type(&self) -> BackendType; 23 /// Get vendor id of this device. get_vid(&self) -> u1624 fn get_vid(&self) -> u16; 25 /// Get product id of this device. get_pid(&self) -> u1626 fn get_pid(&self) -> u16; 27 /// Submit a xhci transfer to backend. submit_transfer(&mut self, transfer: XhciTransfer) -> Result<()>28 fn submit_transfer(&mut self, transfer: XhciTransfer) -> Result<()>; 29 /// Set address of this backend. set_address(&mut self, address: UsbDeviceAddress)30 fn set_address(&mut self, address: UsbDeviceAddress); 31 /// Reset the backend device. reset(&mut self) -> Result<()>32 fn reset(&mut self) -> Result<()>; 33 /// Get speed of this device. get_speed(&self) -> Option<DeviceSpeed>34 fn get_speed(&self) -> Option<DeviceSpeed>; 35 } 36