Crate usb_util

Expand description

USB device access and descriptor manipulation.

Modules§

ConfigDescriptor: Standard USB configuration descriptor as defined in USB 2.0 chapter 9, not including the standard header.
ConfigDescriptorTree
DescriptorHeader: Standard USB descriptor header common to all descriptor types.
Device: Device represents a USB device.
DeviceDescriptor: Standard USB device descriptor as defined in USB 2.0 chapter 9, not including the standard header.
DeviceDescriptorTree
DmaBuffer: DmaBuffer represents a DMA buffer lent by a device
EndpointDescriptor: Standard USB endpoint descriptor as defined in USB 2.0 chapter 9, not including the standard header.
InterfaceDescriptor: Standard USB interface descriptor as defined in USB 2.0 chapter 9, not including the standard header.
InterfaceDescriptorTree
Transfer: Transfer contains the information necessary to submit a USB request and, once it has been submitted and completed, contains the response.
TransferHandle: TransferHandle is a handle that allows cancellation of in-flight transfers between submit_transfer() and get_completed_transfer(). Attempting to cancel a transfer that has already completed is safe and will return an error.
UsbRequestSetup: RequestSetup is first part of control transfer buffer.

ControlRequestDataPhaseTransferDirection
ControlRequestRecipient: Recipient type of control request.
ControlRequestType: Request types.
DescriptorType: Standard USB descriptor types.
DeviceSpeed: USB device speed
EndpointDirection: Endpoint Directions.
EndpointType: Endpoint types.
Error
StandardControlRequest: Standard request defined in usb spec.
TransferBuffer: TransferBuffer is used for data transfer between crosvm and the host kernel
TransferStatus

control_request_type: Construct a bmRequestType value for a control request.
parse_usbfs_descriptors: Given data containing a full set of descriptors as provided by the Linux kernel usbdevfs descriptors file, parse the descriptors into a tree data structure.