Trouble porting linux driver to DDE Kit

[Ivan Loskutov]

Hi Norman,

We are planning to send pull-request with our commits in  the near future.
How to it make correct. I tried to make pull-request on Github, but I can't
select required commits. How do you do it? Or can I open an issue with
commits hash only?

--
Ivan Loskutov




2012/10/5 Norman Feske <norman.feske at ...1...>

> Hi Alexander,
>
> > Sorry, I have not studied the whole source code yet, but I have the
> > impression
> > that after mapping memory via attaching mmio dataspace via rm reading
> > registers by the pointer and via Register c++ template class gives
> > different results.
> > I had the trouble - my I2C driver from uboot didn't work when I just
> mapped
> > the memory,
> > but Ivan Loskutov has reworked it to use the Register class and it
> worked
> > from now on.
>
> maybe the trouble was related to the bug report we discussed yesterday?
> See:
>
>
>
> http://sourceforge.net/mailarchive/forum.php?thread_name=506D7D02.2040904%40genode-labs.com&forum_name=genode-main
>
> (you will have to click on "Attachments: Message as HTML" of the first
> message)
>
> > Could you tell if I'm digging in the correct direction? I think both IO
> > memory and
> > buffers must be mapped uncached, unbuffered via arm mmu, but, again,
> I've
> > not
> > yet read all the code of genode and fiasco.
>
> You are definitely on the right track!
>
> > If you're interested, here is what I suggest (and want to do later),
> > but I'm planning to write a more detailed blog entry later and keep you
> > updated.
> >  * replacing most panda stuff with omap4 name
> >  (i.e., move headers from include/board/panda to include/cpu/omap4)
>
> That's a good idea. Maybe we could even think about introducing another
> indirection 'soc'. ARMv7 is a 'cpu', OMAP4 is a 'soc', Pandaboard is a
> 'board'.
>
> >  * Implementing abstractions for various device classes (like, gpio,
> > voltage regulator,
> >  led in linux, but in C++)
>
> I agree. The corresponding session interfaces implemented by Ivan are a
> good start. So far, we haven't included them in our upstream tree
> because there was no pull request or topic in our issue tracker to
> discuss it. If you are interested, I would appreciate you opening a new
> topic for each device class. So we can take the discussion over there.
>
> >  * splitting dde kit's common stuff (lx_emul, platform) and usb driver.
> > Ideally, it should
> >  be easy to add new drivers to the makefile and build each linux driver
> as
> > a standalone binary
>
> That is completely in line with our intentions. We planned to split
> those parts into reusable pieces as soon as we reach a certain diversity
> of drivers within dde_linux. Maybe, we are just reaching this point now?
> ;-)
>
> Cheers
> Norman
>
> --
> Dr.-Ing. Norman Feske
> Genode Labs
>
> http://www.genode-labs.com · http://genode.org
>
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> Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth
>
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