Re: PROBLEM: Devices behind PCI Express-to-PCI bridge not mapped

From: Andreas Koch <koch@esa.informatik.tu-darmstadt.de>
To: Linus Torvalds <torvalds@osdl.org>
Cc: Andreas Koch <koch@esa.informatik.tu-darmstadt.de>,
	Ivan Kokshaysky <ink@jurassic.park.msu.ru>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	linux-pci@atrey.karlin.mff.cuni.cz, linux-kernel@vger.kernel.org,
	gregkh@suse.de
Subject: Re: PROBLEM: Devices behind PCI Express-to-PCI bridge not mapped
Date: Fri, 10 Jun 2005 16:33:55 +0200	[thread overview]
Message-ID: <20050610143355.GE29454@erebor.esa.informatik.tu-darmstadt.de> (raw)
In-Reply-To: <Pine.LNX.4.58.0506091617130.2286@ppc970.osdl.org>

On Thu, Jun 09, 2005 at 04:20:59PM -0700, Linus Torvalds wrote:
> 
> 
> On Fri, 10 Jun 2005, Andreas Koch wrote:
> >
> > I did some more experimentation, and to my great the surprise, the
> > serial port on the dock _is_ functioning, even when the rest of the
> > dock is dead.

Note that, after further checking, I discovered that the very
low-speed ports on the dock (serial, PS/2, parallel) are _not_
interfaced via PCI Express (as the USB and FireWire ports are).  Thus,
the fact they do work does not help us in deducing the cause of the
bridging issues.

Andreas