Re: [Xen-ia64-devel] where's phys_to_machine?

["David Brown" <dmlb2000@xxxxxxxxx>]

On 2/14/07, Tristan Gingold <tgingold@xxxxxxx> wrote:
> On Thu, Feb 15, 2007 at 11:15:21AM +0900, Isaku Yamahata wrote:
> [...]
> > Probably the ia64 counter part is phys_to_machine_for_dma().
> > It convers pseudo physical address to machine address.
> > In general, device drivers shouldn't call phys_to_machine() directly.
> > For dma, device drivers should use dma api.
> > For IO area access, device drivers should use ioremap()/iounmap().
> >
> > This is only the theory and presumably you already know it.
> > The device which you are playing with might have strange aspects,
> > I guess.
> IIRC the Quadrics cards are designed to be programmed directly by the user.
> They therefore have an MMU, which has to be updated.  Not a really simple
> driver !
Correct there's lots of fun stuff you can do with the quadrics drivers
in a working cluster. They aren't a simple driver by any stretch of
the imagination, I just wanted to make sure I translated the code
correctly to ia64.
Thanks.

- David Brown

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