From: David Gibson <david@gibson•dropbear.id.au>
To: Todd Poynor <tpoynor@mvista•com>
Cc: linuxppc-embedded@lists•linuxppc.org
Subject: Re: very minor 405GP and 405GPr PCI difference
Date: Wed, 23 Oct 2002 14:08:50 +1000 [thread overview]
Message-ID: <20021023040850.GC1198@zax> (raw)
In-Reply-To: <3DB5C963.8020201@mvista.com>
On Tue, Oct 22, 2002 at 02:55:47PM -0700, Todd Poynor wrote:
>
> David Gibson wrote (regarding Rainier PMM1 bios_fixup in MVL):
>
> >Well, it may be in a different place, but it looks like it has the
> >same problem. It is still establishing a PCI window at PLB address
> >0x80000000, which is the same address used for the PMM0 window - or is
> >that also different in the MV kernel?
> >
> >I'd be trying to work out what that mapping's actually for, first. I
> >still can't see how it can possibly work - if there are overlapping
> >PMM windows, what actually happens to accesses in that (PLB) range?
>
> Yes, it looks like MVL only sets up the one window using PMM1... we've
> started an effort to have the Rainier-knowedgeable folks get the code
> sync'ed up with the community and this should happen soon.
Hang on, so just to clarify - MVL sets up PMM1 with the code you
posted, but doesn't set up PMM0 anywhere? From my reading of that
code, it sets up a window at the same address as the "standard"
(Walnut) mapping, except that it is only 128kB instead of 1GB. Is
there a reason that Rainier must have such a small window?
--
David Gibson | For every complex problem there is a
david@gibson•dropbear.id.au | solution which is simple, neat and
| wrong.
http://www.ozlabs.org/people/dgibson
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2002-10-23 4:08 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-27 12:27 very minor 405GP and 405GPr PCI difference Ralph Blach
2002-09-30 4:01 ` David Gibson
2002-10-01 5:21 ` David Gibson
2002-10-01 8:37 ` "David Müller (ELSOFT AG)"
2002-10-02 1:42 ` David Gibson
2002-10-02 4:26 ` Allen Curtis
2002-10-02 5:34 ` David Gibson
2002-10-02 17:03 ` Matt Porter
2002-10-03 1:10 ` David Gibson
2002-10-03 15:14 ` Matt Porter
2002-10-04 2:48 ` David Gibson
2002-10-04 18:33 ` Todd Poynor
2002-10-08 4:17 ` David Gibson
2002-10-08 19:39 ` Todd Poynor
2002-10-09 2:14 ` David Gibson
[not found] ` <20021 <20021023040850.GC1198@zax>
2002-10-24 23:50 ` Ralph Blach
2002-10-25 1:19 ` David Gibson
2002-10-02 7:46 ` "David Müller (ELSOFT AG)"
2002-10-03 1:12 ` David Gibson
2002-10-03 8:28 ` "David Müller (ELSOFT AG)"
2002-10-06 5:23 ` Andrew May
2002-10-07 1:31 ` Matt Porter
2002-10-08 4:14 ` David Gibson
2002-10-08 5:21 ` Andrew May
2002-10-08 14:56 ` Matt Porter
2002-10-08 17:31 ` Andrew May
2002-10-08 18:20 ` Matt Porter
2002-10-09 1:58 ` David Gibson
2002-10-09 10:35 ` Kenneth Johansson
2002-10-09 15:21 ` Allen Curtis
2002-10-11 19:37 ` Andrew May
2002-10-14 1:20 ` David Gibson
2002-10-08 6:19 ` Allen Curtis
2002-10-08 15:18 ` Matt Porter
2002-10-09 2:10 ` David Gibson
2002-10-22 21:55 ` Todd Poynor
2002-10-23 4:08 ` David Gibson [this message]
-- strict thread matches above, loose matches on Subject: below --
2002-10-23 13:10 Ralph Blach
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