From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Kumar Gala <galak@kernel.crashing.org>
Cc: Scott Wood <scottwood@freescale.com>,
"linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>
Subject: Re: pci node question
Date: Sat, 21 Apr 2012 07:20:16 +1000 [thread overview]
Message-ID: <1334956816.3197.24.camel@pasglop> (raw)
In-Reply-To: <EDA55B32-FD14-4B5C-90AF-7FC5F77898E0@kernel.crashing.org>
On Fri, 2012-04-20 at 15:37 -0500, Kumar Gala wrote:
> > What does this node represent in the first place? Is there really a
> > PCI-to-PCI bridge? Are all other PCI devices underneath it?
>
> PCIe has this concept of a "virtual" bridge between the root-comples,
> so that is what the node represents. Its always been a bit confusing
> to me as its not 100% standardized by PCI sig.
It actually is. The root complex virtual p2p is absolutely part of the
standard.
Cheers,
Ben.
next prev parent reply other threads:[~2012-04-20 21:20 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-20 18:37 pci node question Yoder Stuart-B08248
2012-04-20 18:53 ` Kumar Gala
2012-04-20 19:04 ` Scott Wood
2012-04-20 20:37 ` Kumar Gala
2012-04-20 20:53 ` Scott Wood
2012-04-20 21:24 ` Benjamin Herrenschmidt
2012-04-20 21:20 ` Benjamin Herrenschmidt [this message]
2012-04-20 21:19 ` Benjamin Herrenschmidt
2012-04-20 19:50 ` Yoder Stuart-B08248
2012-04-20 21:11 ` Benjamin Herrenschmidt
2012-04-23 15:48 ` Yoder Stuart-B08248
2012-04-23 20:21 ` Benjamin Herrenschmidt
2012-04-23 20:32 ` Yoder Stuart-B08248
2012-04-23 20:40 ` Benjamin Herrenschmidt
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