[EXT] USB3 XHCI crashing with USB 3 hub on Octeon

[Aaron Williams <awilliams@marvell.com>]

I am using the latest pull and it's still crashing.

-Aaron

On Tuesday, February 23, 2021 2:39:41 AM PST Stefan Roese wrote:
> On 23.02.21 11:36, Mark Kettenis wrote:
> >> From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
> >> Date: Tue, 23 Feb 2021 10:23:04 +0100
> >> 
> >> On Tue, 2021-02-23 at 09:15 +0100, Stefan Roese wrote:
> >>> Hi Bin,
> >>> Hi Aaron,
> >>> 
> >>> I've added Nicolas to Cc, as he also recently did some work on the
> >>> physical vs virtual addresses in the xHCI driver.
> >>> 
> >>> On 23.02.21 09:07, Bin Meng wrote:
> >>>> Hi Aaron,
> >>>> 
> >>>> On Tue, Feb 23, 2021 at 3:31 PM Aaron Williams <awilliams@marvell.com> 
wrote:
> >>>>> I have a follow-up. USB is working on our OcteonTX boards running
> >>>>> 2020.10. It may be something specific to the Octeon port. Note that I
> >>>>> did see a problem where the scratchpad memory is using direct
> >>>>> pointers instead of physical addresses (which will not work on MIPS).
> >>>>> As far as I know, however, the Octeon XHCI controller does not use
> >>>>> the scratchpad memory.
> >>>> 
> >>>> Do you plan to send a patch to convert the scratchpad pointer to
> >>>> physical address?
> >>> 
> >>> Nicolas, did your patch also address the scratchpad area (sorry for not
> >>> looking myself).
> >> 
> >> Yes, my patch took care of that :).
> > 
> > Ah cool.  I missed that patch.  Looks like this is exactly what I need
> > to cater for the translation done by the IOMMU on the Apple M1.
> > 
> > Won't be sending that patch then ;)
> 
> Nice.
> 
> Aaron, it might be that you missed this patch series with your latest
> mainline xHCI tests a few days ago. Could you please try again with
> current mainline and report back, if this changes the behavior on
> Octeon MIPS with USB3 hubs?
> 
> Thanks,
> Stefan