devu-hcd-xhci.so

Runs on:

QNX OS

Options:

ioport=addr

Register the base address of the USB controller. The default is to scan the PCI bus.

irq=num

The interrupt request number.

memory=name

Use the specified typed memory for DMA descriptors (endpoint descriptor, transfer descriptors, and so on). The default is /memory/below4G.

nosmm

Don't disable system management. The default is to disable it.

nousb3

Don't enable USB 3 mode.

pindex=num

The instance of the controller on the PCI bus to apply subsequent options to. The value starts from 0.

prio=num

Set the pulse-handler thread's priority (default 21).

soft_retries=num

xHCI driver retries failed transfers num times ( default 0).

soft_retries_mask=num

Select endpoint types that use soft retries ( default 0xd ). The bit masks include:

• CONTROL EP = 0x1 On by default
• ISOCH EP = 0x2 Not Allowed!
• BULK EP = 0x4 On by default
• INT EP = 0x8 On by default

verbose=num

Set verbosity.

Description:

The devu-hcd-xhci.so server provides support for computers that have eXtensible Host Controller Interface (xHCI) USB controllers. This server creates the /dev/usb/devu-hcd-xhci.so device.

Examples:

Scan the PCI bus for all available controllers:

io-usb-otg -dxhci 

Attach to the first and third controller instances and set the verbose option on the first controller instance as follows:

io-usb-otg -dxhci pindex=0,verbose=4,pindex=2 &