Driver for eXtensible Host Controller Interface (xHCI) USB controllers
Note:
You must be root to start this manager.
Syntax:
io-usb-otg -d xhci [option[,option...]] ... &
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.
Note:
- If you specify options, you must include a pindex option
for all controllers you wish to use.
- The devu-hcd-xhci.so server supports superspeed plus, superspeed, high, full, and low speeds.
-
The current implementation doesn't support secondary streams (which is an XHCI rather than a USB feature).
This usually isn't a problem because most hardware boards support a sufficient number of primary streams.
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 &