On Wed, Apr 12, 2006 at 10:33:42PM -0400, Niki Denev wrote: > M. Warner Losh wrote: > > In message: <[EMAIL PROTECTED]> > > Christian Brueffer <[EMAIL PROTECTED]> writes: > > : On Thu, Mar 30, 2006 at 04:25:45AM +0000, Warner Losh wrote: > > : > imp 2006-03-30 04:25:45 UTC > > : > > > : > FreeBSD src repository > > : > > > : > Modified files: > > : > sys/dev/pccbb pccbb.c > > : > 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 instead > > : > reads garbage (usually 0xffffffff, but other times other things). > > : > This totally violates the PCI spec, but happens rarely enough that 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. > > : > > > : > Problem reported by many, but sam@ gave me this workaround after > > : > diagnosing the problem. > > : > > > : > > : 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. > > : > > : What kind of debug info can I provide? > > > > A Thinkpad T41p. :-) > > > > Failing that, can you set hw.cbb.debug=1 and provide me with the > > output. > > > > Warner > > 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 more. > > 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 : > > hw.pci.do_power_nodriver=3 > hw.pci.allow_unsupported_io_range=1 > hw.pci.do_powerstate=1 >
Good to see that someone can reproduce this. Does it work again when you back this change out? - Christian -- Christian Brueffer [EMAIL PROTECTED] [EMAIL PROTECTED] GPG Key: http://people.freebsd.org/~brueffer/brueffer.key.asc GPG Fingerprint: A5C8 2099 19FF AACA F41B B29B 6C76 178C A0ED 982D
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