Re: Problems booting with 3ware Controllers

From: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
To: Sven Kretzschmar <sven.kretzschmar@gmx.de>
Cc: Keir.Fraser@cl.cam.ac.uk, xen-devel@lists.sourceforge.net
Subject: Re: Problems booting with 3ware Controllers
Date: Wed, 11 Aug 2004 09:51:41 +0100	[thread overview]
Message-ID: <20040811085141.GN19796@cl.cam.ac.uk> (raw)
In-Reply-To: <200408110147110890.0159B651@mail.gmx.de>

On Wed, Aug 11, 2004 at 01:47:11AM +0200, Sven Kretzschmar wrote:
> Unresolved symbols in ...../3w-xxxx.o
> depmod:   force_evtchn_callback
> 
> looks like a missing EXPORT_SYMBOL statement, but I am
> not sure if this has anything to do with my problems when
> booting with the 3ware drivers compiled into the kernel; I think
> it hasn't ...

Keir has fixed this.

> OK, I attached now the output while booting with TW_DEBUG=1.
> Caveat: It's from the 2.4. Xenolinux, because that compiled quicker :-/
> Don't pay too much attention at that part:
> "3w-xxxx: tw_check_bits(): No expected bits (0x13025000).
> 3w-xxxx: tw_poll_status(): Unexpected bits."
> ...because it also shows up when booting a vanilla 2.4.26 kernel
> (successfully !), but without the endless loop.

Are you sure it gets into an endless loop?  Because you indicated
earlier that it does find both cards, so it should find the 2nd
card after a long stream of tw_check_bits/tw_poll_status messages.
Because the interesting part will be after it found both cards and
tries to use them...  At least PCI setup und interrupt routing
looks allright.

> BTW: How can I catch the output of a normal 2.4.26 kernel via
> serial line ? What kernel options do I have to set exactly ?
> I tried "com1=115200,8n1 console=ttyS0" like with xenolinux,
> but it did not work ?

You need to enable the serial drivers (on by default) and there's
a console on serial line just next to it.  The syntax for the
command line is: console=ttyS0,115200n8
I don't know if a com1= option is supported...

> Tomorrow I will also try to boot only with one 3ware controller;
> currently, there are 2 controllers connected to the machine.
> And I will send you the output of a 2.6. kernel, if still necessary

Please try to get the output after the endless loop or confirm that
it doesn't find the 2nd card without TW_DEBUG set.

    christian

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