Date: Wed, 25 May 2011 09:47:50 +0200 From: "Daniel O'Connor" <doconnor@gsoft.com.au> To: Hans Petter Selasky <hselasky@c2i.net> Cc: freebsd-usb@freebsd.org Subject: Re: USB driver locking Message-ID: <99FAD844-DDC8-4C3D-8117-0887CB893728@gsoft.com.au> In-Reply-To: <201105250933.13255.hselasky@c2i.net> References: <91D613ED-CA0F-41BF-AD53-2FD42529DCF8@gsoft.com.au> <201105250933.13255.hselasky@c2i.net>
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On 25/05/2011, at 9:33, Hans Petter Selasky wrote: > On Tuesday 24 May 2011 23:48:30 Daniel O'Connor wrote: >> I find that my application has rare problems where it does not get a reply >> from the micro to a control bus packet, or perhaps the micro doesn't >> receive it (I need to add a sequence number or similar to my protocol to >> try and detect it I think). > > There was a data toggle issue fixed with the EHCI recently, which triggers > depending on hardware timing. Are you running the latest 8-stable or 9- This one? http://svnweb.freebsd.org/base?view=revision&revision=219845 I have that as I am running 219926 > current. There is also a new utility called usbdump, which can be used to > figure out what is going on. I am running 9-current (in production for my sins..) usbdump is useful but consumes too much CPU at my data rate :( -- Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
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