[PATCH][V4] powerpc/fsl-pci: Add pci inbound/outbound PM support

[Li Yang-R58472]

在 Sep 28, 2012，0:07，"Kumar Gala" <galak at kernel.crashing.org> 写道：

>>>> Hi Kumar,
>>>> I have already sent the log.
>>>> Do you have any comment on it?
>>>> 
>>>> Thanks.
>>>> - Hongtao.
>>>> 
>>> 
>>> Hongtao,
>>> 
>>> You mentioned:
>>> 
>>>> I tested the re-parsing way by using setup_pci_atmu() when resume.
>>>> And I found out that re-parsing will *change* outbound IO
>>>> translation address regitster.
>>> 
>>> What do the values look like in both ATMU registers and io_resource if you reparse?
>> 
>> I think Hongtao mentioned in previous email as follows, the ATMU
>> registers are inline with the io_resource address.
> 
> I was under that the impression that was the normal boot case, not the values from after wakeup.

It is for the normal boot.  But re-parse will use the io resource after pic scan to initialize atmu.  Instead, the original atmu is initialized use the io resource before the scan.

Leo
> 
> - k
> 
>>>> Since potar is set by out_be32(&pci->pow[j].potar, (hose-
>>>> io_resource.start >> 12);
>>>> I provide the result of hose->io_resource.start >> 12 as follows:
>>>> 
>>>> pcie at ffe09000:
>>>> before pci scan: io_resource.start >> 12: 0
>>>> after pci scan : io_resource.start >> 12: ff7ed
>>>> 
>>>> pcie at ffe0a000:
>>>> before pci scan: io_resource.start >> 12: 0
>>>> after pci scan : io_resource.start >> 12: ff7db
>>>> 
>>>> pcie at ffe0b000:
>>>> before pci scan: io_resource.start >> 12: 0
>>>> after pci scan : io_resource.start >> 12: ff7c9
>>>> 
>>>> Note that I tested on P1022DS.
> 
>