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Date: Thu, 27 Mar 2008 08:54:45 -0700
From: Sam Leffler <sam@errno.com>
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To: Petr Holub <hopet@ics.muni.cz>
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Cc: imp@freebsd.org, freebsd-hardware@freebsd.org
Subject: Re: support for Proxim Silver wifi card
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Petr Holub wrote:
>> broken with the PCCARD slot rather than the card. Can that be
>> because it's dual PCMCIA/ExpressCard slot? Any hints for further
>> debugging of the problem?
>>     
>
> I've just tried the following, if it is of any help:
>
> [root@kloboucek ~]# sysctl -a | fgrep -i cardbus
> hw.cardbus.cis_debug: 0
> hw.cardbus.debug: 0
> dev.cbb.0.%desc: RF5C476 PCI-CardBus Bridge
> dev.cardbus.%parent: pci
> dev.cardbus.0.%desc: CardBus bus
> dev.cardbus.0.%driver: cardbus
> dev.cardbus.0.%parent: cbb0
> [root@kloboucek ~]# sysctl -w hw.cardbus.cis_debug=1
> hw.cardbus.cis_debug: 0 -> 1
> [root@kloboucek ~]# sysctl -w hw.cardbus.debug=1
> hw.cardbus.debug: 0 -> 1
> [root@kloboucek ~]# 
> cardbus0: CIS pointer is 0x5001
> cardbus0: CIS in BAR 0x10
> cardbus0: Expecting link target, got 0x0
> cardbus0: Warning: Bogus CIS ignored
> ath0: <Atheros 5212> mem 0xbfeb0000-0xbfebffff irq 16 at device 0.0 on
> cardbus0
> ath0: [ITHREAD]
> ath0: unable to attach hardware; HAL status 13
> device_attach: ath0 attach returned 6
>   

I believe this is a cardbus issue.  As I've said before I have at least 
one bridge+card combo that doesn't work in HEAD because of an apparent 
regression in the cardbus code.  I'm not familiar enough w/ the cardbus 
code to suggest where to dig but if you boot another system on the same 
hard and the card is properly identified then you can sift register 
settings for a clue.

    Sam