[PATCHv2] PCI: QDF2432 32 bit config space accessors

[Sinan Kaya]

On 11/3/2016 12:58 PM, Sinan Kaya wrote:
>> > This is the crucial point I have failed to communicate clearly: the
>> > PNP0C02 resource is *always* required, even if the MCFG is correct.
>> > 
> Interesting...
> 
> It looks like there is a lot of lessons learnt here from history.
> 
> I think this requirement is only true if your system DDR space and PCIe
> space overlaps in the memory map. I understand that Intel systems allow
> sharing of these two memory ranges. An OS could potentially reclaim this
> address range.
> 
> If there is no overlap and PCI is not enabled, there can't be any SW entity
> to reclaim this space. 
> 
> Did I miss something?
> 

For protection, it makes sense to reserve this range. I'm trying to understand
who would claim this range.

-- 
Sinan Kaya
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.