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Subject: Re: [PATCH][V4] powerpc/fsl-pci: Add pci inbound/outbound PM support
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From: Kumar Gala <galak@kernel.crashing.org>
In-Reply-To: <CADRPPNQga4J26oDacT-fGMZiecE2KLsLh2DBEErtQ9_gJSwgpA@mail.gmail.com>
Date: Thu, 27 Sep 2012 11:04:01 -0500
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To: Li Yang <leoli@freescale.com>
Cc: Wood Scott-B07421 <B07421@freescale.com>,
 "linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>,
 Li Yang-R58472 <r58472@freescale.com>,
 Jia Hongtao-B38951 <B38951@freescale.com>
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>>> Hi Kumar,
>>> I have already sent the log.
>>> Do you have any comment on it?
>>>=20
>>> Thanks.
>>> - Hongtao.
>>>=20
>>=20
>> Hongtao,
>>=20
>> You mentioned:
>>=20
>>> 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.
>>=20
>> What do the values look like in both ATMU registers and io_resource =
if you reparse?
>=20
> 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.

- 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:
>>>=20
>>> pcie@ffe09000:
>>> before pci scan: io_resource.start >> 12: 0
>>> after pci scan : io_resource.start >> 12: ff7ed
>>>=20
>>> pcie@ffe0a000:
>>> before pci scan: io_resource.start >> 12: 0
>>> after pci scan : io_resource.start >> 12: ff7db
>>>=20
>>> pcie@ffe0b000:
>>> before pci scan: io_resource.start >> 12: 0
>>> after pci scan : io_resource.start >> 12: ff7c9
>>>=20
>>> Note that I tested on P1022DS.