linux-kernel - Re: [PATCH] pata_hpt3x3: Major reworking and testing

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Date:	Tue, 3 Jul 2007 22:12:01 +0200
From:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	akpm@...l.org, linux-kernel@...r.kernel.org,
	linux-ide@...r.kernel.org, jeff@...zik.org
Subject: Re: [PATCH] pata_hpt3x3: Major reworking and testing

On Tuesday 03 July 2007, Alan Cox wrote:
> > The new improved driver is not really better than the old one because
> > the old one is broken. :)
> > 
> > Old driver does identical configuration when it comes to PIO modes.
> 
> No the old driver doesn't even do that. It starts up. It spuriously
> adjusts some non writable PCI BAR registers, prints a message about
> resources being in use already then exits.

OK, thanks for clarifying this.

> I had a poke around the setup. As far as I can observe we break even if
> the ROM timing values are used as is. I suspect documentation or a good
> deal of luck is needed.

Yeah.

BTW the original Andre's driver had some references to misc configuration
registers at offsets 0x10 and 0x11 of PCI BAR4.

http://www.linuxhq.com/kernel/v2.3/10/drivers/block/hpt343.c

Does anybody have DOS driver for HPT343?  Google doesn't have it...

Thanks,
Bart
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