Re: libata extension

From: Robert Hancock
Date: Sun Mar 11 2007 - 04:06:48 EST


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

Is it possible to use libata for such purpose or i need to write
separate IDE driver ?
By the way, i'm sure it should be done in kernel space since i'm going
to deal with some hdd manufacturer commands.

P.S. I was looking through libata and ide sources and documentation
but still dont have broad picture.

I believe you should be able to do this by sending ATA pass-through SCSI commands into the device using SG_IO, without any kernel changes. It's really the mechanism that's meant for this..

--
Robert Hancock Saskatoon, SK, Canada
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Home Page: http://www.roberthancock.com/

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