FreeBSD USB equivalent to Linux usb_control_msg

N

Need4Speed

Hi,

Can anyone clarify how to go about doing a synchronous usb control transfer, similar to Linux's usb_control_msg? I want to implement the TIOCMGET ioctl on a usb-to-serial converter. The Linux driver uses synchronous control messages to read DCE and CTS serial pin status, and I want to do something similar in FreeBSD. The usbdi(9) manpage talks about control transfers using usbd_transfer_submit, but they don't look synchronous to me. What about using usbd_transfer_drain? Is there a better way to do this in FreeBSD?

Thanks
 
You better ask this on mailinglist.
Causal users won't be able help you... what you need is some developer.... (not many read this forum)
 
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