linux-kernel - Re: libata extension

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Date:	Sun, 11 Mar 2007 15:09:38 +0100
From:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
To:	Vitaliyi <imgrey@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: libata extension

Hi,

On Sunday 11 March 2007, Vitaliyi wrote:
> Good Day
> 
> Say i want to implement extended set of ATA commands available to
> userspace for building diagnostic tools.
> I need 0x40 -- read verify and 0x32 -- write long with error handling,

Mark Lord is working on READ/WRITE_LONG support for libata,
he has posted draft patch recently on linux-ide mailing list.

[ Please consider reading/joining linux-ide@...r.kernel.org ML,
  it is where Linux ATA discussion happens... ]

> for example. I was trying ide driver through ioctl's, but seems it
> lack of functionality and full of gotchas. Furthermore it oopses
> sometimes.

READ/WRITE_LONG is unsupported and as you've already noticed
TASKFILE ioctls are full of gotchas...

> Is it possible to use libata for such purpose or i need to write
> separate IDE driver ?

It should be possible using ATA pass-through, some libata changes
may be required but it is the right way to go IMO.

Bart
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