From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <c5f3ba25ccb2cec436ae6c3ef348c429@coraid.com>
From: erik quanstrom <quanstro@coraid.com>
Date: Mon,  4 Jun 2007 07:45:18 -0400
To: 9fans@cse.psu.edu
Subject: Re: [9fans] fossil crash after installation
In-Reply-To: <10b109140706040232q4a660daera1e8161433e65c0e@mail.gmail.com>
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> Where is the best place to disable DMA ?
> This command can be used in termrc (or cpurc) after kernel is loaded. But
> isn't it late?
>
> Antonin

dma is left as bios left it. c.f. /sys/src/9/pc/sdata.c:/^atadmamode
so disabling dma in bios should do the trick.  you can verify this
with

	; /cat /dev/sdC0/ctl | grep config
	config 427A capabilities 2F00 dma 00550040 dmactl 00000000 rwm 16 rwmctl 0 lba48always off

the number following dmactl will be non-zero if dma is on.

- erik