Date: Thu, 13 Apr 2006 09:32:13 +0200 From: Christian Brueffer <brueffer@FreeBSD.org> To: Niki Denev <niki@totalterror.net> Cc: cvs-src@freebsd.org, src-committers@freebsd.org, cvs-all@freebsd.org, "M. Warner Losh" <imp@bsdimp.com> Subject: Re: cvs commit: src/sys/dev/pccbb pccbb.c Message-ID: <20060413073213.GB1266@haakonia.hitnet.RWTH-Aachen.DE> In-Reply-To: <443DB886.5010307@totalterror.net> References: <200603300425.k2U4PjJH099559@repoman.freebsd.org> <20060412212843.GH1258@haakonia.hitnet.RWTH-Aachen.DE> <20060412.160552.35796990.imp@bsdimp.com> <443DB886.5010307@totalterror.net>
next in thread | previous in thread | raw e-mail | index | archive | help
--lEGEL1/lMxI0MVQ2 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Apr 12, 2006 at 10:33:42PM -0400, Niki Denev wrote: > M. Warner Losh wrote: > > In message: <20060412212843.GH1258@haakonia.hitnet.RWTH-Aachen.DE> > > Christian Brueffer <brueffer@FreeBSD.org> writes: > > : On Thu, Mar 30, 2006 at 04:25:45AM +0000, Warner Losh wrote: > > : > imp 2006-03-30 04:25:45 UTC > > : >=20 > > : > FreeBSD src repository > > : >=20 > > : > Modified files: > > : > sys/dev/pccbb pccbb.c=20 > > : > Log: > > : > On some laptops, under very high loads, the socket event register= read > > : > in the ISR doesn't read the actual socket event register, but ins= tead > > : > reads garbage (usually 0xffffffff, but other times other things). > > : > This totally violates the PCI spec, but happens rarely enough tha= t a > > : > workaround is in order. This adds one test when we have a real > > : > interrupt to service (which is very rare), and doesn't affect the > > : > usualy 'nothing to see here' case at all. > > : > =20 > > : > Problem reported by many, but sam@ gave me this workaround after > > : > diagnosing the problem. > > : > =20 > > :=20 > > : This breaks pccard/cardbus support on my Thinkpad T41p (confirmed by > > : backing this change out). With this change, I just get an "Interrupt > > : storm detected on irq 5; throttling" message. > > :=20 > > : What kind of debug info can I provide? > >=20 > > A Thinkpad T41p. :-) > >=20 > > Failing that, can you set hw.cbb.debug=3D1 and provide me with the > > output. > >=20 > > Warner >=20 > CURRENT from Monday here, on ThinkPad X31. > I tested only with compact flash memory card, because it is the only > that i have now, but on insert i get only this on the console : > "Interrupt storm detected on "irq5:"; throttling interrupt source" > I've set hw.cbb.debug to 1 before inserting the card but i got nothing mo= re. >=20 > P.S.: i have the following hw.pci. tunables in boot.conf from a long > time ago, > i don't know if they can affect this behaviour, but i'm giving them here > just in case : >=20 > hw.pci.do_power_nodriver=3D3 > hw.pci.allow_unsupported_io_range=3D1 > hw.pci.do_powerstate=3D1 >=20 Good to see that someone can reproduce this. Does it work again when you back this change out? - Christian --=20 Christian Brueffer chris@unixpages.org brueffer@FreeBSD.org GPG Key: http://people.freebsd.org/~brueffer/brueffer.key.asc GPG Fingerprint: A5C8 2099 19FF AACA F41B B29B 6C76 178C A0ED 982D --lEGEL1/lMxI0MVQ2 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (FreeBSD) iD8DBQFEPf59bHYXjKDtmC0RAvyLAJ0R3LL2qJYqDzxd8bTGMP5quOrBogCgvNeW LzMd2c1+f4YXh9E2LUrpE7k= =1K57 -----END PGP SIGNATURE----- --lEGEL1/lMxI0MVQ2--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20060413073213.GB1266>