Re: [PATCH] New IDE/block driver for OCTEON SOC Compact Flash interface.

[Sergei Shtylyov]

Hello

David Daney wrote:

> > > As part of our efforts to get the Cavium OCTEON processor support
> > > merged (see: http://marc.info/?l=linux-mips&m=122600487218824), we
> > > have this CF driver for your consideration.
> > >
> > > Most OCTEON variants have *no* DMA or interrupt support on the CF
> > > interface so a simple bit-banging approach is taken.  Although if 
> > > DMA is
> > > available, we do take advantage of it.
> > >
> > > The register definitions are part of the chip support patch set
> > > mentioned above, and are not included here.
> > >
> > > At this point I would like to get feedback as to whether this is a
> > > good approach for the CF driver, or perhaps generate ideas about other
> > > possible approaches.
> >
> >   It's totally unacceptable for drivers/ide/ as this is 
> > self-containeed driver no using IDE core for anything, so this can 
> > only fit well to drivers/block/.
>
> Not quite true, it is using ide_fix_driveid() and ide_fixstring(), but 
> I get your point.

  Overlooked those. I just saw that it looked very alike the version 
that I've seen -- hidden deep inside arch/mips/ at that time. :-)

> OTOH, CF support via self-contained driver is certainly a waste of 
> code since IDE core and (libata) are here to drive the CF devices as 
> well. What we need is a "normal" IDE or libata (at your option) driver.
>
> I will have to try it to see if the hardware has the necessary support.

  It sure does have the necessary support -- this is a part of CF spec.

> Thanks,
> David Daney

WBR, Sergei


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/