linux-kernel - Re: RFC: export constants from shpc.h?

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Message-ID: <20120223120119.782db1da@jbarnes-desktop>
Date:	Thu, 23 Feb 2012 12:01:19 -0800
From:	Jesse Barnes <jbarnes@...tuousgeek.org>
To:	"Michael S. Tsirkin" <mst@...hat.com>
Cc:	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: RFC: export constants from shpc.h?

On Thu, 23 Feb 2012 21:50:54 +0200
"Michael S. Tsirkin" <mst@...hat.com> wrote:

> On Thu, Feb 23, 2012 at 08:50:04AM -0800, Jesse Barnes wrote:
> > On Thu, 16 Feb 2012 16:54:49 +0200
> > "Michael S. Tsirkin" <mst@...hat.com> wrote:
> > 
> > > I've implemented an shpc controller emulator
> > > in qemu, so I needed a bunch of constants
> > > similar to what drivers/pci/hotplug/shpc.h has.
> > > 
> > > Any objections to adding a PCI_SHPC_XXXX prefix
> > > so these and moving them to pci_regs.h?
> > > PCI utilities can then use them from /usr/include/linux.
> > > 
> > > One can see how a utility that looks at slot LED and MRL
> > > states might be useful
> > > (we'd need to export the base offset through sysfs
> > > to make it possible to use such in parallel with shpc).
> > 
> > pci_regs.h is generally reserved for architected regs,
> > but maybe a
> > separate header file makes sense.  Or just patch libpciaccess or
> > pci-utils with your tool.
> > 
> > -- 
> > Jesse Barnes, Intel Open Source Technology Center
> 
> Fair enough, but out of curiosity,
> could you pls clarify what is meant by 'architected'?
> SHPC is a PCI-SIG spec after all, not a vecor-specific interface...

Sorry that's what I meant; I was thinking it was one of the vendor
ones.  Putting the SHPC reg definitions in pci_regs.h is fine.

Thanks,
-- 
Jesse Barnes, Intel Open Source Technology Center

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