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Date: Mon, 29 Nov 2004 16:53:40 +0900
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From: Hidetoshi Shimokawa <simokawa@FreeBSD.org>
To: Heikki Suonsivu <hsu@bbnetworks.net>
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cc: freebsd-bugs@freebsd.org
Subject: Re: kern/73313: Maxtor Onetouch drivers hang when used with
	firewire.
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At Sat, 30 Oct 2004 16:28:26 +0300 (EEST),
Heikki Suonsivu wrote:
> Oct 30 15:30:45 hsu /kernel: Unknown service addr 0x0000:0x04f14800 WREQB(1) src=0xffc2 data=8
> Oct 30 15:32:39 hsu /kernel: Unknown service addr 0x0000:0x03b83800 WREQB(1) src=0xffc2 data=8
> Oct 30 15:32:54 hsu /kernel: Unknown service addr 0x0000:0x1761b800 WREQB(1) src=0xffc2 data=8
> Oct 30 15:32:54 hsu /kernel: Unknown service addr 0x0000:0x16242800 WREQB(1) src=0xffc2 data=8
> Oct 30 15:32:59 hsu /kernel: Unknown service addr 0x0000:0x0dddb000 WREQB(1) src=0xffc2 data=8

These address ranges should be handled as physical access and 
the kernel shouldn't be notified of it.
It seems that your fwohci chip stop handling of physical access
for unknown reason and this leads to timeout error.

Can you swap your fwohci card with other cards with a different chip?

/\ Hidetoshi Shimokawa
\/  simokawa@FreeBSD.org