Date: Wed, 10 May 2006 16:21:10 +0000 From: "Ben Kaduk" <minimarmot@gmail.com> To: "Mike Silbersack" <silby@silby.com> Cc: cvs-src@freebsd.org, Mike Silbersack <silby@freebsd.org>, freebsd-current@freebsd.org Subject: Re: cvs commit: src/sys/dev/bfe if_bfe.c if_bfereg.h Message-ID: <47d0403c0605100921s4364241xb04f2969956fb594@mail.gmail.com> In-Reply-To: <20060508112602.O1937@odysseus.silby.com> References: <200605040741.k447f23o027971@repoman.freebsd.org> <445F2AC2.9030105@jp.FreeBSD.org> <20060508112602.O1937@odysseus.silby.com>
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On 5/8/06, Mike Silbersack <silby@silby.com> wrote: > > 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 int= erface > > 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 > _______________________________________________ > cvs-src@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/cvs-src > To unsubscribe, send any mail to "cvs-src-unsubscribe@freebsd.org" > Just a "me, too," and perhaps a ping (cc-ing current). . . I experienced an interrupt storm with these if_befreg.h changes; backing them out results in a working kernel. I include the information you requested of Matsushita-san, for completeness= : I have 1G of ram in this laptop, and after boot -v, dmesg -a|grep bfe: bfe0: <Broadcom BCM4401 Fast Ethernet> mem 0xfaffe000-0xfaffffff irq 11 at device 0.0 on pci2 bfe0: Reserved 0x2000 bytes for rid 0x10 type 3 at 0xfaffe000 miibus0: <MII bus> on bfe0 bfe0: bpf attached bfe0: Ethernet address: 00:0b:db:99:e8:c7 bfe0: [MPSAFE] bfe0: no link ... DHCPREQUEST on bfe0 to 255.255.255.255 port 67 DHCPDISCOVER on bfe0 to 255.255.255.255 port 67 interval 3 DHCPREQUEST on bfe0 to 255.255.255.255 port 67 bfe0: flags=3D8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 inet6 fe80::20b:dbff:fe99:e8c7%bfe0 prefixlen 64 scopeid 0x1 As a bonus, pciconf -lv has: bfe0@pci2:0:0: class=3D0x020000 card=3D0x81271028 chip=3D0x440114e4 rev=3D= 0x01 hdr=3D0x00 vendor =3D 'Broadcom Corporation' device =3D 'BCM4401 10/100 Integrated Ethernet Controller' class =3D network subclass =3D ethernet and a full dmesg should be available at: https://netfiles.uiuc.edu/kaduk/www/current/dmesg.txt It is currently finals week at University, so I shall not be able to investigate other sizes for these defines for a few days. Thanks, Ben Kaduk
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