Re: [PATCH 1/2] [ide] mmio ide support

From: Arnd Bergmann
Date: Sat Jul 07 2007 - 14:15:09 EST


On Saturday 07 July 2007, Sergei Shtylyov wrote:
> Arnd Bergmann wrote:
>
> >>This adds support for MMIO IDE device like CompactFlash
> >>in TrueIDE mode.
>
> >>Signed-off-by: Anton Vorontsov <avorontsov@xxxxxxxxxxxxx>
> >>Signed-off-by: Vitaly Bordug <vitb@xxxxxxxxxxxxxxxxxxx>
>
> > Hmm, are we still adding new IDE drivers? Do you also have a
>
> Yes, why not?

The last time someone (I think Akira Iguchi) wanted to add
a new powerpc specific IDE driver, that was rejected based
on the argument that drivers/ide/ is going away soon. Most
current distros have already moved over to using libata
exclusively.

> > about to add the electra_ide.c driver in 2.6.23, I guess there
> > should really be _one_ driver that is able to handle all
> > of_device based ATA hosts.
>
> One driver to rule them all. :-)
> That may be not so simple as it seems...

It's certainly not easy to support all ATA chips that
have special capabilities and bugs, but the electra and the
mpc8349-itx both seem to support only the most basic ATA
PIO mode anyway, which does not require much special
handling beyond finding the right mmio addresses.

Arnd <><
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