Fwd: Re: EHCI on armv6 with Write-Back caches

Oleksandr Tymoshenko gonzo at bluezbox.com
Fri Dec 21 00:19:04 UTC 2012

On 12/20/2012 10:56 AM, Hans Petter Selasky wrote:
> FYI - please test!
> ----------  Forwarded Message  ----------
> Subject: Re: EHCI on armv6 with Write-Back caches
> Date: Thursday 20 December 2012, 19:46:34
> From: Hans Petter Selasky <hselasky at c2i.net>
> To: Warner Losh <imp at bsdimp.com>
> CC: Andrew Turner <andrew at fubar.geek.nz>, Oleksandr Tymoshenko
> <gonzo at freebsd.org>, freebsd-usb at freebsd.org, alfred at freebsd.org, freebsd-
> wireless at freebsd.org
> Hi,
> I've run some basic tests over here (x86) which passed after some patch
> modifications. Please test and verify for your ARM targets:
> http://svnweb.freebsd.org/changeset/base/244500
> http://svnweb.freebsd.org/changeset/base/244503
> Please also verify that upgt and uwrt and uath still works like expected.
> --HPS

if_smsc fails with following diagnostics:
smsc0: error: allocating USB transfers failed

The problem is that Bulk-In transfer buffer is 5 pages long but tag's 
boundary limitation is
a page and it's impossible to allocate 5 pages without crossing page 

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