From owner-freebsd-current@FreeBSD.ORG Fri Sep 25 08:22:24 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id A8DCB1065693; Fri, 25 Sep 2009 08:22:24 +0000 (UTC) (envelope-from svein-listmail@stillbilde.net) Received: from mail.stillbilde.net (d80.iso100.no [81.175.61.195]) by mx1.freebsd.org (Postfix) with ESMTP id 64CD18FC1F; Fri, 25 Sep 2009 08:22:24 +0000 (UTC) Received: from [192.168.4.5] (unknown [192.168.4.5]) (Authenticated sender: svein) by mail.stillbilde.net (Familien Skogens mail) with ESMTPSA id ACB0F56; Fri, 25 Sep 2009 10:22:25 +0200 (CEST) Message-ID: <4ABC7DBF.30607@stillbilde.net> Date: Fri, 25 Sep 2009 10:22:23 +0200 From: "Svein Skogen (listmail account)" User-Agent: Thunderbird 2.0.0.23 (Windows/20090812) MIME-Version: 1.0 To: Andriy Gapon References: <4ABA36B1.9070706@icyb.net.ua> <200909241651.47850.hselasky@c2i.net> <4ABC646D.4070604@icyb.net.ua> <4ABC7912.6070301@stillbilde.net> <4ABC7B3C.6090803@icyb.net.ua> In-Reply-To: <4ABC7B3C.6090803@icyb.net.ua> X-Enigmail-Version: 0.96.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: freebsd-current@freebsd.org, freebsd-usb@freebsd.org, Hans Petter Selasky Subject: Re: sb600/sb700 ohci experimental patch X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 25 Sep 2009 08:22:24 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Andriy Gapon wrote: > on 25/09/2009 11:02 Svein Skogen (listmail account) said the following: >> Andriy Gapon wrote: >>> on 24/09/2009 17:51 Hans Petter Selasky said the following: >> *SNIP!* >> >>> Not sure how to interpret this. >>> Either a timing issue, i.e. the register gets over-written some time after we >>> program it. >>> Or perhaps a bug in SMM code, i.e. when we generate an SMI (e.g. while doing >>> ohci1 takeover) SMM code erroneously writes something to ohci0 ctrlhead. >>> Or something else... :) >> Could it be related to "USB Legacy Devices" in bios, and thus be the >> same problem that was discussed recently (regarding HZ larger than 1000)? >> >> An usb-legacy setup might explain both the register-changing _AND_ the >> timing issue... > > It very well could, but... > > We do perform proper OHCI takeover, so we don't expect firmware to mess with the > controllers after it is finished. > > Also, I personally have everything "USB legacy" disabled in my BIOS ("USB Legacy > Support", "USB Keyboard support", "USB Mouse support"). Although, Gigabyte BIOSes > are known to be sometimes smarter than they appear and to "autodetect" things when > they are explicitly turned off in settings. > > Last point. Explaining is half the job. Fixing / working around is the other half. > > P.S. I am not sure what "timing issue" you referred to. http://lists.freebsd.org/pipermail/freebsd-stable/2009-September/051812.html //Svein - -- - --------+-------------------+------------------------------- /"\ |Svein Skogen | svein@d80.iso100.no \ / |Solberg Østli 9 | PGP Key: 0xE5E76831 X |2020 Skedsmokorset | svein@jernhuset.no / \ |Norway | PGP Key: 0xCE96CE13 | | svein@stillbilde.net ascii | | PGP Key: 0x58CD33B6 ribbon |System Admin | svein-listmail@stillbilde.net Campaign|stillbilde.net | PGP Key: 0x22D494A4 +-------------------+------------------------------- |msn messenger: | Mobile Phone: +47 907 03 575 |svein@jernhuset.no | RIPE handle: SS16503-RIPE - --------+-------------------+------------------------------- If you really are in a hurry, mail me at svein-mobile@stillbilde.net This mailbox goes directly to my cellphone and is checked even when I'm not in front of my computer. - ------------------------------------------------------------ Picture Gallery: https://gallery.stillbilde.net/v/svein/ - ------------------------------------------------------------ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkq8fb8ACgkQODUnwSLUlKSqXQCgiIvShHz0AoLx7U5M3v29hgHc 5egAnjdPqAQdWeVxx26oZiKxXdLsW0vl =hcEc -----END PGP SIGNATURE-----