Date: Mon, 26 Apr 2004 18:27:00 -0700 (PDT) From: Doug White <dwhite@gumbysoft.com> To: Julian Elischer <julian@elischer.org> Cc: Nate Lawson <nate@root.org> Subject: Re: Trouble with EHCI controller and USB Flash Disk. Message-ID: <20040426182459.D27442@carver.gumbysoft.com> In-Reply-To: <Pine.BSF.4.21.0404211117230.31770-100000@InterJet.elischer.org> References: <Pine.BSF.4.21.0404211117230.31770-100000@InterJet.elischer.org>
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On Wed, 21 Apr 2004, Julian Elischer wrote: > > > I have problems with mine USB2.0 Mobile Disk III and EHCI controller. > > > (http://www.twinmos.com/flash/flash_p_usb20_mobile3.htm) > > > > > > When I try to use EHCI controller, my system finds out > > > the device /dev/da0, but does not find out the > > > device /dev/da0s1. > > > > > > With UHCI controller no problem. > > > > Since it works with UHCI, it's likely an EHCI problem. Unfortunately, I > > don't know much about EHCI so I'm moving this to -current. > > The ehci driver has quite a few problems. > It workd in some cases but not in others. > I have not yet isolated what the defining factor is. I think EHCI has a tendency to drop transactions. I got umass really confused a few weeks back by attaching one usb key to ehci and a low key to uhci and trying to do stuff on both keys at once. The transaction sequence #s got off-by-one and never recovered (due to a bug in umass), but the txn shouldn't have disappeared in the first place. -- Doug White | FreeBSD: The Power to Serve dwhite@gumbysoft.com | www.FreeBSD.org
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