linux-kernel - Re: ICH Intel PATA short cable override...

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Message-ID: <46E53554.1090604@rtr.ca>
Date:	Mon, 10 Sep 2007 08:15:16 -0400
From:	Mark Lord <liml@....ca>
To:	Jeff Garzik <jgarzik@...ox.com>
Cc:	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Daniel J Blueman <daniel.blueman@...il.com>,
	Tejun Heo <htejun@...il.com>, linux-ide@...r.kernel.org,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: ICH Intel PATA short cable override...

Jeff Garzik wrote:
> Mark Lord wrote:
>> Ditto for selecting transfer modes.
> 
> 
> Waiting on one thing AFAICS:
> 
>     ability to drain/idle all ports +
>     issue a command on one port +
>     resume normal parallel port operation
> 
> SET FEATURES - XFER MODE is special in that it requires all sorts of 
> additional controller handling and careful cross-port synchronization.

Absolutely.

Also note that I'm *not* advocating HDIO_SET_PIO_MODE (and kin) here,
but rather perhaps a sysfs option per-drive.  It is needed, especially for
custom/embedded systems, and I suppose we will get there eventually.  :)

Cheers
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