From: Benjamin Herrenschmidt <bh40@calva.net>
To: mlan@cpu.lu, linuxppc-dev@lists.linuxppc.org
Subject: Re: busmaster/latency for video
Date: Fri, 8 Oct 1999 12:18:23 +0200 [thread overview]
Message-ID: <19991008121823.016009@mailhost.mipsys.com> (raw)
In-Reply-To: <199910071913.VAA00361@piglet.cpu.lu>
On Thu, Oct 7, 1999, Michel Lanners <mlan@cpu.lu> wrote:
>Ah, but in that case Apple's OF should enable bus mastering. If I read
>well between the lines of Apple's docs, OF should set a few default
>parameters on all PCI devices, among which bus mastering. I'm not sure
>about latency, though...
OF tends to ignore devices that don't have an OF expansion ROM. (For
example, it won't enable memory or IO accesses in the command register).
I beleive it won't enable bus mastering neither but I may be wrong.
--
Perso. e-mail: <mailto:bh40@calva.net>
Work e-mail: <mailto:benh@mipsys.com>
BenH. Web : <http://calvaweb.calvacom.fr/bh40/>
** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~1999-10-08 10:18 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-10-07 5:54 busmaster/latency for video Ryan Nielsen
1999-10-07 13:50 ` Michel Lanners
1999-10-07 14:06 ` Geert Uytterhoeven
1999-10-07 19:13 ` Michel Lanners
1999-10-08 9:19 ` Geert Uytterhoeven
1999-10-08 10:18 ` Benjamin Herrenschmidt [this message]
1999-10-08 17:59 ` Michel Lanners
1999-10-11 6:30 ` Geert Uytterhoeven
1999-10-11 18:12 ` Michel Lanners
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