[laptop-discuss] Re: I/O error Intel 3945 wifi driver

[Brian Xu - Sun Microsystems - Beijing China]

Oliver Ebert 写道:
>> The attached files show the card is 3945 and attached
>> to wpi driver.
>> While for some reason, the eeprom are read out as all
>> 0xff. I need more
>> investigation and let you know if I find it out.
>>
>> Thanks,
>> Brian
>>     
>
> Brian,
>
> I noticed the 0xFF eeprom read out, too. It seems that one of the guys who replied in the thread "Here is the Intel 3945 wifi driver" has the same issue according his dmesg output.
>
> Please let me know if you need more data or testing.
>   
Hi, Oliver

Today I find a Fujistu laptop with the same symptom and finally root 
cause this issue. It should be a known boot bug of solaris, see:
http://bugs.opensolaris.org/view_bug.do?bug_id=6419924

Because of the incorrect configuration of the pcie-pci bridge, the 
memory operation can not be forwarded by the bridge, so all I/O(memory 
mapped I/O) operations on 3945 fail, so that all the registers on 3945 
are read out as 0xFF.

I have made that Fujistu work by manually modifying the config space 
registers of the pcie-pci bridge behind which the 3945 chipset resides, 
but this modification doesn't work for your laptop due to motherboard 
difference. So pls send me the '/usr/X11/bin/scanpci -v', then I will 
try to work out a scipt for you to make your wifi work.

Thanks,
Brian
>
> Thanks,
>
>
> Oliver
>  
>  
> This message posted from opensolaris.org
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