From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Olaf Hering <olh@suse.de>
Cc: Linux Kernel list <linux-kernel@vger.kernel.org>,
Paul Mackeras <paulus@samba.org>
Subject: Re: reserve legacy io regions on powermac
Date: Wed, 21 Jul 2004 10:51:07 -0400 [thread overview]
Message-ID: <1090421466.2002.24.camel@gaston> (raw)
In-Reply-To: <20040721091249.GA1336@suse.de>
On Wed, 2004-07-21 at 05:12, Olaf Hering wrote:
> Anton pointed this out.
>
> ppc32 can boot one single binary on prep, chrp and pmac boards.
> pmac has no legacy io, probing for PC style legacy hardware leads to a
> hard crash.
> Several patches exist to prevent serial, floppy, ps2, parport and other
> drivers from probing these io ports.
> I think the simplest fix for 2.6 is a request_region of the problematic
> areas.
> PCMCIA is still missing.
> I found that partport_pc.c pokes at varios ports, without claiming the
> ports first. Should this be fixed?
> smsc_check(), winbond_check(), winbond_check2()
Note that this is still all workarounds... Nothing prevents you (and some
people actually do that) to put a PCI card with legacy serial ports on it
inside a pmac....
Ben.
next prev parent reply other threads:[~2004-07-21 14:54 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-07-21 9:12 reserve legacy io regions on powermac Olaf Hering
2004-07-21 14:51 ` Benjamin Herrenschmidt [this message]
2004-07-21 14:56 ` Olaf Hering
2004-07-21 15:48 ` Geert Uytterhoeven
2004-07-21 17:08 ` Segher Boessenkool
2004-07-21 20:07 ` Jesse Barnes
2004-07-22 8:21 ` Segher Boessenkool
2004-07-23 14:21 ` Olaf Hering
2004-07-23 16:44 ` Olaf Hering
-- strict thread matches above, loose matches on Subject: below --
2004-07-22 0:59 Albert Cahalan
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