Date: Mon, 13 Jun 2011 11:11:38 +0200 From: Hans Petter Selasky <hselasky@c2i.net> To: freebsd-usb@freebsd.org Subject: Re: ucom/uftdi high interrupt load [SEC=UNCLASSIFIED] Message-ID: <201106131111.38482.hselasky@c2i.net> In-Reply-To: <20110613031804.GA17043@stlux503.dsto.defence.gov.au> References: <alpine.OSX.2.00.1106111715580.99056@hotlap.nat.fasttrackmonkey.com> <201106122245.44386.hselasky@c2i.net> <20110613031804.GA17043@stlux503.dsto.defence.gov.au>
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On Monday 13 June 2011 05:18:04 Wilkinson, Alex wrote: > 0n Sun, Jun 12, 2011 at 10:45:44PM +0200, Hans Petter Selasky wrote: > >Also try to set the: > > > >hw.usb.ehci.iaadbug=1 > > erm, what is meant by: > > #sysctl -d hw.usb.ehci.iaadbug > hw.usb.ehci.iaadbug: Enable doorbell bug workaround > > doorbell ? > > -Alex Doorbell is an attribute for a DMA schedule synchronization mechanism. --HPShome | help
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