Problem with PCI bus rescan on 460EX
Felix Radensky
felix at embedded-sol.com
Thu Mar 11 18:50:35 EST 2010
Hi Alex,
Resending, previous attempt was erroneously send as HTML.
Thanks a lot for replying.
Alex Chiang wrote:
> * Felix Radensky <felix at embedded-sol.com>:
>
>> The problem arises when device is plugged in after boot. After doing
>> echo 1 > /sys/bus/pci/rescan
>> the device is identified, but bridge memory window is not allocated,
>> and reads from device memory regions return 0xffffffff. Below is
>> relevant output:
>>
>
> Do you need firmware support on your platform for hotplug?
>
I don't think so, but I've added powerpc guys to CC to make sure.
> Can you please send full dmesg during successful boot, full dmesg
> log during unsuccessful rescan, and contents of /proc/iomem and
> /proc/ioports during success and failure cases?
>
> Be sure you have PCI_CONFIG_DEBUG turned on.
>
Attached. I really appreciate your help. Thanks a lot.
Felix.
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