Driver for Open Host Controller Interface (OHCI) USB controllers
Note:
You must be root to start this driver.
Syntax:
io-usb-otg -d ohci [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.
- isoptd=num
- Restrict the number of isoch frames each TD can transfer (default 8).
- 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.
- num_ed=num
- The number of endpoint descriptors to preallocate.
The number specified is added to the minimum number of endpoint descriptors needed to set up the USB chip.
- num_td=num
- The number of transfer descriptors to preallocate.
The number specified is added to the minimum number of transfer descriptors needed to set up the USB chip.
- pindex=num
- The instance of the controller on the PCI bus to apply subsequent options to.
The value starts from 0.
- verbose=num
- Set the verbosity level.
Description:
The devu-hcd-ohci.so server provides support for computers that have
Open Host Controller Interface (OHCI) USB controllers. This server creates
the /dev/usb/devu-hcd-ohci.so device.
Note:
If you specify options, you need to include pindex options
for all controllers you wish to use.
Examples:
Scan the PCI bus for all available controllers:
io-usb-otg -dohci
Attach to the 1st and 3rd controller instance and
set the verbose option on the 1st, as follows:
io-usb-otg -dohci pindex=0,verbose=4,pindex=2 &