From: Andi Kleen <ak@suse.de>
To: jbarnes@sgi.com (Jesse Barnes)
Cc: linux-kernel@vger.kernel.org
Subject: Re: Memory mapped IO vs Port IO
Date: 11 Sep 2003 18:20:08 +0200 [thread overview]
Message-ID: <p73k78fi9fr.fsf@oldwotan.suse.de> (raw)
In-Reply-To: <20030911161450.GA23536@sgi.com.suse.lists.linux.kernel>
jbarnes@sgi.com (Jesse Barnes) writes:
>
> I like this idea, esp. as a global option. It would help e.g. visws
> which can't reliably do MMIO. Most platforms could default MMIO to y
> also, to make things easier.
The problem AFAIK is usually that there are some buggy older chipset
versions that do not work properly with MMIO, but others do.
That's especially an issue on widely cloned cards like Tulip.
It's not a platform specific thing, more a device specific setting.
Of course some platforms want to disable it completely too, but that's
rare.
-Andi
next prev parent reply other threads:[~2003-09-11 16:20 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20030911160116.GI21596@parcelfarce.linux.theplanet.co.uk.suse.lists.linux.kernel>
2003-09-11 16:17 ` Memory mapped IO vs Port IO Andi Kleen
2003-09-11 16:25 ` Matthew Wilcox
2003-09-11 16:31 ` Andi Kleen
2003-09-11 16:42 ` Matthew Wilcox
2003-09-11 17:12 ` Jamie Lokier
2003-09-11 17:25 ` Andi Kleen
2003-09-12 1:39 ` jw schultz
2003-09-12 16:10 ` Anthony Dominic Truong
2003-09-12 16:22 ` Jamie Lokier
2003-09-12 16:27 ` Jesse Barnes
2003-09-12 17:48 ` Jesse Barnes
2003-09-11 17:13 ` Jamie Lokier
[not found] ` <20030911161450.GA23536@sgi.com.suse.lists.linux.kernel>
2003-09-11 16:20 ` Andi Kleen [this message]
[not found] <20030911192550.7dfaf08c.ak@suse.de.suse.lists.linux.kernel>
[not found] ` <1063308053.4430.37.camel@huykhoi.suse.lists.linux.kernel>
[not found] ` <20030912162713.GA4852@sgi.com.suse.lists.linux.kernel>
[not found] ` <20030912174807.GA629@sgi.com.suse.lists.linux.kernel>
2003-09-12 18:00 ` Andi Kleen
2003-09-12 18:04 ` Jesse Barnes
2003-09-12 18:09 ` Andi Kleen
2003-09-12 18:11 ` Tim Hockin
2003-09-12 18:24 ` Jesse Barnes
2003-09-12 18:29 ` Andi Kleen
2003-09-12 18:58 ` Martin J. Bligh
2003-09-12 19:51 ` Jesse Barnes
2003-09-12 16:41 John Bradford
2003-09-12 21:52 ` Mike Fedyk
2003-09-13 4:01 ` Mike Fedyk
-- strict thread matches above, loose matches on Subject: below --
2003-09-11 16:01 Matthew Wilcox
2003-09-11 16:14 ` Måns Rullgård
2003-09-11 16:14 ` Jesse Barnes
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