Date: Mon, 8 May 2006 11:43:13 -0500 (CDT) From: Mike Silbersack <silby@silby.com> To: Makoto Matsushita <matusita@jp.FreeBSD.org> Cc: cvs-src@FreeBSD.org, Mike Silbersack <silby@FreeBSD.org> Subject: Re: cvs commit: src/sys/dev/bfe if_bfe.c if_bfereg.h Message-ID: <20060508112602.O1937@odysseus.silby.com> In-Reply-To: <445F2AC2.9030105@jp.FreeBSD.org> References: <200605040741.k447f23o027971@repoman.freebsd.org> <445F2AC2.9030105@jp.FreeBSD.org>
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On Mon, 8 May 2006, Makoto Matsushita wrote: >> Revision Changes Path >> 1.37 +20 -15 src/sys/dev/bfe/if_bfe.c >> 1.8 +2 -2 src/sys/dev/bfe/if_bfereg.h > > After commiting this change, my bfe device is not working; when the interface > is up via ifconfig(8), following message is shown and no in/out packets thru > the interface: > > May 8 17:36:18 hostname kernel: Interrupt storm detected on "irq10:"; > throttling interrupt source > > However, backout if_bfereg.h rev 1.8 changes, the interface is working again > as expected... Did you know why? > > -- > Makoto `MAR' Matsushita The interrupt storm results whenever the bfe chip is unhappy with the RX/TX buffers that we give it. I'm not sure why the change to bfereg would make it unhappy. Can you tell the me the following: 1. How much RAM does your system have? 2. What revision of the bfe chip do you have, according to dmesg? Then, if you're sure it's the if_bfereg.h change and not the if_bfe.c change that causes the problem, try playing with the values of BFE_TX_LIST_CNT and BFE_RX_LIST_CNT - those are the only two values that changed. I changed them from 511 to 128. You could try values like 127, 255, 256, 510... see if any/all of those work. Sorry for causing trouble for you, these chips seem very finicky. Mike "Silby" Silbersack
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