On Thu, 13 Apr 2006, Christian Brueffer wrote:
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?
This commit broke pccard insertion detection for me as well. Backing it
out restores functionality.
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