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> References: <20030622172655.GR87417@marius.org>
next in thread | previous in thread | raw e-mail | index | archive | help
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
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20030622.140921.43008036.imp>