Date: Thu, 19 Jan 2006 20:11:49 +0100 From: Juergen Lock <nox@jelal.kn-bremen.de> To: Warner Losh <imp@bsdimp.com> Cc: freebsd-usb@freebsd.org Subject: Re: ehci not used(?) when connected device turned on later Message-ID: <20060119191149.GA13509@saturn.kn-bremen.de> In-Reply-To: <20060117.163851.10386451.imp@bsdimp.com> References: <20060117225131.GA6571@saturn.kn-bremen.de> <20060117.162938.68129078.imp@bsdimp.com> <20060117.163851.10386451.imp@bsdimp.com>
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On Tue, Jan 17, 2006 at 04:38:51PM -0700, Warner Losh wrote: > From: Warner Losh <imp@bsdimp.com> > Subject: Re: ehci not used(?) when connected device turned on later > Date: Tue, 17 Jan 2006 16:29:38 -0700 (MST) > > > From: Juergen Lock <nox@jelal.kn-bremen.de> > > Subject: ehci not used(?) when connected device turned on later > > Date: Tue, 17 Jan 2006 23:51:31 +0100 > > > > > Is this a known problem with the 5.4 usb code? > > > > > > 1. connect an externally powered umass device (eg a harddrive with > > > its own psu) thats turned off > > > 2. boot freebsd > > > 3. turn the device on later > > > > > > then it gets only usb 1.1 speed even when ehci is in the kernel. > > > You have to reconnect it _while being turned on_ to get usb2 speed. > > > Same problem if you turn it off after use and later turn it back on > > > while still being connected... > > > > > > Is there a fix? (With linux it works as expected, if that means > > > anything... :) > > > > > > Oh, please Cc me with followups, I'm not subscribed on -usb (yet?) > > > > I have no idea what you are saying. > > > > ehci is used for me when I plug in my devices, or when I turn them > > on. Do you have ehci in your kernel? It was disabled by default in > > 5.4. > > Oh, I'm slow today... > > I'm pretty sure that -current does the right thing, but I'll double > check tonight. I got one instance of `40.000MB/s transfers' dmesg after turning it on today, so apparently it only `sometimes' doesnt work. (Next try it didn't.) Some kind of race? Maybe the `rate of success' depends on the device as well, as you haven't seen the problem at all... (right?)
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