linux-kernel - Re: IDE DMA doesn't work with pata

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Message-ID: <f3e1edf0cde8141d7145411c4ae3212d@localhost>
Date:	Thu, 11 Oct 2007 13:03:05 +0200
From:	<philipp@...wo.de>
To:	linux-kernel@...r.kernel.org
Subject: Re: IDE DMA doesn't work with
	pata_via and compact flash card

On Thu, 11 Oct 2007 11:19:11 +0100, Alan Cox <alan@...rguk.ukuu.org.uk>
wrote:
>> ones, when using DMA. Turning off DMA for the old IDE drivers or
>> patching ata_generic to handle my IDE controller and then deactivating
>> DMA in the BIOS works, but then disk I/O is unbelievable slow.. do you
>> have any idea how to fix it, so that DMA works?
>
> Does your CF/IDE adapter support DMA ?

Thank you for your answer :)

I thought CF/IDE adapters are mainly electrical adapters.. I've never seen
one which explicitly states the modes it supports. On the other hand it
says on the package: "Vista compatible" (whatever that means)

Is there some way I can figure it out? I'll have a deeper look on the
datasheet when I'm home again later, but I'm rather sure there wasn't
anything mentioning supporting data transfer modes..

Best regards,
Philipp

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