Re: [Qemu-devel] [PATCH v4] hw/arm: Add arm SBSA reference machine

[Gerd Hoffmann]

  Hi,

> > But I assume you specifically want things that do a lot of DMA, so I
> > couldn't get away with asking for keeping it to the SBSA UART(s)? :)
> 
> Ideally, it would be something that supports platform MSIs as well,
> but that is unlikely to be a priority for anyone (and i would be very
> surprised if any of QEMU's sysbus host controllers implement that at
> the moment)
> 
> I can live with just sysbus AHCI, though, if EHCI/XHCI are too cumbersome.

Generic sysbus ehci should not be difficuilt, 10 lines patch or so.

Gives you only usb2 though.  usb1 devices are handled either via ohci
companion controller (should be doable), or via integrated usb2 hub
(more common on recent hardware, but qemu usb-hub is usb1 only).

Generic sysbus xhci would be more work.  But you'll get usb 1+2+3
support.  And wiring up platform MSIs should be possible too.

cheers,
  Gerd