[you would replace docs/ich9-ehci-uhci.cfg with e.g.
   /usr/local/share/doc/qemu/docs/ich9-ehci-uhci.cfg, but turns out
   ehci seems broken for me here with FreeBSD guests at least, I get:

         FETCHENTRY: entry at 22C5484 is of type 2 which is not supported yet
processing error - resetting ehci HC

That is a transfer descriptor for isochronous split transfers (siTD). Split transfers are used to support 1.1 devices behind 2.0 hubs. There is no USB 2.0 Hub emulation in qemu and also no split transfer emulation in EHCI, thats why the failure.

/me wonders what FreeBSD tries to do here? This triggers even without a single device connected and I can't think of a reason to use a siTD in that case ...

Nevertheless qemu shouldn't fail like that.


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