[PATCH] powerpc/85xx: Save and restore pcie ATMU windows for PM

[Kushwaha Prabhakar-B32579]

Hi Kumar,
  Please find my answer in-lined

> -----Original Message-----
> From: Kumar Gala [mailto:galak at kernel.crashing.org]
> Sent: Thursday, May 19, 2011 12:00 PM
> To: Kushwaha Prabhakar-B32579
> Cc: linuxppc-dev at lists.ozlabs.org; meet2prabhu at gmail.com; Jiang Yutang-
> B14898
> Subject: Re: [PATCH] powerpc/85xx: Save and restore pcie ATMU windows for
> PM
> 
> 
> On Apr 28, 2011, at 1:38 AM, Prabhakar Kushwaha wrote:
> 
> > D3-cold state indicates removal of the clock and power. however
> > auxiliary (AUX) Power may remain available even after the main power
> rails are powered down.
> >
> > wakeup from D3-cold state requires full context restore. Other things
> > are taken care in pci-driver except ATMUs.
> > ATMU windows needs to be saved and restored during suspend and resume.
> >
> > Signed-off-by: Jiang Yutang <b14898 at freescale.com>
> > Signed-off-by: Prabhakar Kushwaha <prabhakar at freescale.com>
> > ---
> > Based upon
> > git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git(b
> > ranch master)
> >
> > arch/powerpc/sysdev/fsl_pci.c |  116
> +++++++++++++++++++++++++++++++++++++++++
> > arch/powerpc/sysdev/fsl_pci.h |    7 ++-
> > 2 files changed, 121 insertions(+), 2 deletions(-)
> 
> Is this patch for when we are a host or agent?

This patch is independent of host or agent. It is for supporting D3 cold state for P1022.
These functions are called during System level suspend and resume. 

--Prabhakar