From owner-freebsd-wireless@FreeBSD.ORG  Thu Dec 20 21:15:50 2012
Return-Path: <owner-freebsd-wireless@FreeBSD.ORG>
Delivered-To: freebsd-wireless@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52])
 by hub.freebsd.org (Postfix) with ESMTP id E80156B8;
 Thu, 20 Dec 2012 21:15:50 +0000 (UTC)
 (envelope-from gonzo@id.bluezbox.com)
Received: from id.bluezbox.com (id.bluezbox.com [88.198.91.248])
 by mx1.freebsd.org (Postfix) with ESMTP id 8B6658FC12;
 Thu, 20 Dec 2012 21:15:50 +0000 (UTC)
Received: from [88.198.91.248] (helo=[IPv6:::1])
 by id.bluezbox.com with esmtpsa (TLSv1:CAMELLIA256-SHA:256)
 (Exim 4.77 (FreeBSD)) (envelope-from <gonzo@id.bluezbox.com>)
 id 1TlnSr-000EvS-Ra; Thu, 20 Dec 2012 13:15:40 -0800
Message-ID: <50D37FF7.6000301@freebsd.org>
Date: Thu, 20 Dec 2012 13:15:35 -0800
From: Oleksandr Tymoshenko <gonzo@freebsd.org>
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64;
 rv:17.0) Gecko/17.0 Thunderbird/17.0
MIME-Version: 1.0
To: Hans Petter Selasky <hselasky@c2i.net>
Subject: Re: EHCI on armv6 with Write-Back caches
References: <20121218204931.5322922d@fubar.geek.nz>
 <201212190956.28609.hselasky@c2i.net>
 <4A66C6C9-22EC-45AA-987D-49F958D7A8F9@bsdimp.com>
 <201212201946.34137.hselasky@c2i.net>
In-Reply-To: <201212201946.34137.hselasky@c2i.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Sender: gonzo@id.bluezbox.com
X-Spam-Level: --
X-Spam-Report: Spam detection software, running on the system "id.bluezbox.com",
 has
 identified this incoming email as possible spam.  The original message
 has been attached to this so you can view it (if it isn't spam) or label
 similar future email.  If you have any questions, see
 The administrator of that system for details.
 Content preview:  On 12/20/2012 10:46 AM, Hans Petter Selasky wrote: > 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. > [...] 
 Content analysis details:   (-2.9 points, 5.0 required)
 pts rule name              description
 ---- ---------------------- --------------------------------------------------
 -1.0 ALL_TRUSTED            Passed through trusted hosts only via SMTP
 -1.9 BAYES_00               BODY: Bayes spam probability is 0 to 1%
 [score: 0.0000]
Cc: freebsd-usb@freebsd.org, alfred@freebsd.org, freebsd-wireless@freebsd.org,
 Andrew Turner <andrew@fubar.geek.nz>, Warner Losh <imp@bsdimp.com>
X-BeenThere: freebsd-wireless@freebsd.org
X-Mailman-Version: 2.1.14
Precedence: list
List-Id: "Discussions of 802.11 stack,
 tools device driver development." <freebsd-wireless.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-wireless>, 
 <mailto:freebsd-wireless-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-wireless>
List-Post: <mailto:freebsd-wireless@freebsd.org>
List-Help: <mailto:freebsd-wireless-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-wireless>, 
 <mailto:freebsd-wireless-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 20 Dec 2012 21:15:51 -0000

On 12/20/2012 10:46 AM, Hans Petter Selasky wrote:
> 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.
>

Thanks! I'll test umass on my ARM devices. EHCI driver suffers from this 
too. QH, QTD and
other structures mixes DMA data and non-DMA fields. Splitting them would 
be a right thing
to do too. Though I believe  EHCI vs. WB caches issue is more 
complicated then just this.