Subject: Re: [RFC] [PATCH] PowerPC: Add 64-bit phys addr support to 32-bit pci.

From: Valentine Barshak <[email-masked]>
Date: Tue, 18 Sep 2007 19:01:29 +0400

Kumar Gala wrote:
> 
> On Sep 18, 2007, at 9:44 AM, Valentine Barshak wrote:
> 
>> Add 64-bit physical address support to PCI.
> 
> Can you expand on your commit message.  for example why do this? is it 
> address a bug fix, etc..
> 
>>
>> Signed-off-by: Valentine Barshak <[email-masked]>
>> ---
>>  arch/powerpc/kernel/iomap.c  |    4 +--
>>  arch/powerpc/kernel/pci_32.c |   56 
>> +++++++++++++++++++++++++++++--------------
>>  2 files changed, 41 insertions(+), 19 deletions(-)
> 
> - k
> 

Currently 32-bit pci code doesn't support 64-bit physical addresses.
We have to add 64-bit addr support in order to bring-up pci on PowerPC 
440. Actually, this refers to the conversation started here:

http://ozlabs.org/pipermail/linuxppc-dev/2007-September/042267.html
Thanks,
Valentine.