Date: Wed, 4 Apr 2007 09:32:15 +0900 From: Pyun YongHyeon <pyunyh@gmail.com> To: Rainer Hurling <rhurlin@gwdg.de> Cc: darren780@yahoo.com, freebsd-current@freebsd.org, shigeaki@se.hiroshima-u.ac.jp Subject: Re: yongari nfe problems Message-ID: <20070404003215.GA11525@cdnetworks.co.kr> In-Reply-To: <461285A6.5010805@gwdg.de> References: <20070313004601.GA87608@cdnetworks.co.kr> <20070313005845.GB87608@cdnetworks.co.kr> <45F636B5.9060608@gwdg.de> <20070313070153.GD87608@cdnetworks.co.kr> <20070331003031.GB68853@cdnetworks.co.kr> <460E77BE.9090503@gwdg.de> <20070402010230.GA1323@cdnetworks.co.kr> <46113CF2.6090009@gwdg.de> <20070403035845.GB7223@cdnetworks.co.kr> <461285A6.5010805@gwdg.de>
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On Tue, Apr 03, 2007 at 06:49:42PM +0200, Rainer Hurling wrote: [...] > > In "man ehci(4)" I found: > > ------- > BUGS > The driver is not finished and is quite buggy. > There is currently no support for isochronous transfers. > ------- > > Possibly this could cause the observed "dropouts" of nfe0 from a few > seconds till several minutes? > I'm not familiar with ehci(4) but I think it has nothing to do with missing Tx completion interrupts observed on nfe(4). > > Is there a knob or option in driver nfe(4) I can use to try classical > polling or any 'lower' mode of operation? > Add 'options DEVICE_POLLING' into kernel configuration file and rebuild your kernel. Use ifconfig(8) to enable/disable polling(4) feature. See polling(4) for more detailed description and tuning parameters. -- Regards, Pyun YongHyeon
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