USB Framework Debugging Support (usba)

The usba module provides debugging support for the platform-independent Universal Serial Bus (USB) framework.

dcmds

::usba_debug_buf

Print the USB debugging information buffer.

::usba_clear_debug_buf

Empty the USB debugging information buffer.

[ address ] ::usba_device [-pv]

Given the address of a usba_device structure, print summary information. If no address is supplied, this dcmd walks the global list of usba_device structures. If the -p option is present, also list information for all open pipes on this device. If the -v option is present, list verbose information for each device.

address ::usb_pipe_handle

Given the address of a USB pipe handle structure (struct usba_ph_impl), print summary information for this handle.

Walkers

usba_list_entry

Given the address of a usba_list_entry structure, iterate over the chain of such structures.

usba_device

Walk the global list of usba_device_t structures.

usb_pipe_handle

Given a usba_device_t address, walk USB pipe handles.