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Subject: Re: The IO problem on multiple PCI busses
To: benh@kernel.crashing.org (Benjamin Herrenschmidt)
Date: Thu, 1 Mar 2001 18:30:05 +0000 (GMT)
Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.linuxppc.org
In-Reply-To: <19350124090521.18330@mailhost.mipsys.com> from "Benjamin Herrenschmidt" at Mar 01, 2001 04:33:37 PM
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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
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> I'm, of course open to any comments about this (in fact, I'd really like
> some feedback). One thing is that we also need to find a way to pass
> those infos to userland. Currently, we implement an arch-specific syscall
> that allow to retreive the IO physical base of a given PCI bus. That may
> be enough, but we may also want something that match more closely what we

This is also a problem for mmio and to an extent other things on pa-risc.
You might want to talk to Grant and the other HPPA hackers

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