From: Matt Sealey <matt@genesi-usa.com>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linuxppc-dev@ozlabs.org, Marian Balakowicz <m8@semihalf.com>
Subject: Re: PCI IO range limitation
Date: Fri, 29 Jun 2007 00:38:58 +0100 [thread overview]
Message-ID: <46844692.1040804@genesi-usa.com> (raw)
In-Reply-To: <1183052634.5521.284.camel@localhost.localdomain>
Benjamin Herrenschmidt wrote:
> On Thu, 2007-06-28 at 12:20 +0200, Marian Balakowicz wrote:
>> Hi,
>>
>> Trying to change PCI IO window base for 52xx target I found that
>> we are pretty much limited to a "0" offset only.
>
> We just fixed that for 64 bits but 32 bits still has the limitation.
> Note that it's not a very good idea to have your IO range at !0 if
> you're going to use anything ISA-like, such as a VGA video card or other
> legacy devices behind a PCI southbridge or SuperIO.
The chances of that on an MPC52xx platform are practically zero, aren't
they?
--
Matt Sealey <matt@genesi-usa.com>
Genesi, Manager, Developer Relations
next prev parent reply other threads:[~2007-06-28 23:38 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-28 10:20 PCI IO range limitation Marian Balakowicz
2007-06-28 17:43 ` Benjamin Herrenschmidt
2007-06-28 23:38 ` Matt Sealey [this message]
2007-06-29 0:13 ` Benjamin Herrenschmidt
2007-06-29 17:08 ` Matt Sealey
2007-06-29 23:14 ` Benjamin Herrenschmidt
2007-07-03 9:24 ` Marian Balakowicz
2007-07-03 11:13 ` Benjamin Herrenschmidt
2007-07-06 13:37 ` Marian Balakowicz
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