Date: Sun, 22 Jun 2003 14:09:21 -0600 (MDT) From: "M. Warner Losh" <imp@bsdimp.com> To: marius@marius.org Cc: freebsd-mobile@freebsd.org Subject: Re: TI-1420 PCMCIA Chipset Problems Message-ID: <20030622.140921.43008036.imp@bsdimp.com> In-Reply-To: <20030622172655.GR87417@marius.org>
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In message: <20030622172655.GR87417@marius.org>
Marius Strom <marius@marius.org> writes:
: Using a kernel with cbb instead of pcic, upon insert of a PCMCIA card
: (any card), the machine locks. Not hard locks, but an odd lock where
: keyboard is thoroughly unresponsive in any terminal. However, I can
: switch VTY's using the alt-[f1-f8] sequence no problem. Using a kernel
: with pcic, /dev/card0 doesn't show up, so I can't get 5.1 working the
: way 4.x did.
OK. That's odd. It should show up. Oh, you likely need to use
'device card' instead of 'device pccard'. That's likely a good
short-cut.
: I recompiled the kernel with DEBUG and broke to the debugger after the
: crash. It looks like cbb1 was spinning. Also, upon the insertion of a
: PC card, the CPU Fan comes on, so the processor is doing some serious
: work with it in. Traces in the debugger only show keyboard input that
: I've tried to do.
Looks like we've hit an interrupt storm. That sucks. The reason the
fan comes on is that an interrupt storm takes a lot of CPU, which
heats things up. It used to be that I'd know that my laptop was
panicing when the fan came on and I got no response for similar
reasons.
So, gotta find out why the storm is happening. Here's an odd thought,
and I don't know how much of a programmer you are, but you might want
to see if you can use the o2micro workaround code to see if *that* is
the problem. You might also see where the (cbb[01]) threads are
running from the debugger. That might give us a hint as to what is
going on when the freeze comes.
: Tried running devd with the -Dd flags to see if it would give any debug
: info, but devd doesn't spit anything out at all.
devd isn't involved yet, so this won't give you any useful
information. Good idea, but not yet.
Warner
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