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Date:      Thu, 4 Mar 2010 13:53:30 +0800
From:      Adrian Chadd <adrian@freebsd.org>
To:        Alexander Kabaev <kabaev@gmail.com>
Cc:        freebsd-mips@freebsd.org
Subject:   Re: Missing hack to resolve umass issues on RouterStation Pro
Message-ID:  <d763ac661003032153l73e89acat6357f8277a7552ac@mail.gmail.com>
In-Reply-To: <20100303235333.794674a4@kan.dnsalias.net>
References:  <20100303235333.794674a4@kan.dnsalias.net>

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On 4 March 2010 12:53, Alexander Kabaev <kabaev@gmail.com> wrote:
> Hi,
>
> in order to fix issues with umass on RouterStation Pro, I had to
> fix/hack the kenel in two places. One was related in the way we handled
> partial cache line invaidations and I committed it to -current already
> as http://svn.freebsd.org/changeset/base/203080.
>
> Another one is a hack that is not suitable for inclusion into official
> sources, but still is good enough to get RouterStation Pro to work
> reliably. Get it from here:
>
> http://people.freebsd.org/~kan/usb_rspro.diff
>
> I would appreciate if people who still have issues getting their
> USB-attached storage working reliably with RSPro can test it and report
> success/failure.

It works fine for me. I do see occasional segfault-on-exec which I
wonder whether is due to USB or VM/TLB magic; this smells somewhat
like it could be both. I'll have to re-test things on an NFS root (and
hope there's not MIPS/rspro-y issues with the NFS and NIC code. :)

Is this USB alignment patch something that is needed for all MIPS/USB
stuff, or just this specific SoC. If so, why? And will it potentially
be an issue with other SoCs?



Adrian



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