Dan,

> > are threre any structs for IDMA in the recent kernel sources?
>
> No, they would be in 'commproc.h'.  Again, just use a similar
> method to all of the other device drivers for the CPM.  There
> is a standard BD structure that is part of all devices for
> DMA purposes, and simply add the information needed by IDMA.

Have you ever use IDMA? I think there is a significanct difference
between SDMA and IDMA.
The "standard BD structure" doesn't help much for IDMA, does it?
So it's not that easy. I already had a look at enet.c...

> Don't confuse "parameter ram" and IDMA buffer descriptors.  If
> you notice, the parameter ram is defined as the offset into the
> appropriate pages of the CPM memory.  This information for IDMA
> is not currently defined in 'commproc.h' and you will need to do that.
I don't. Thanks.

> > I know Greg Johnson <gjohnson@research.canon.com.au> proposed some stuff
> > last year. But they never made it into the linuxppc_2_4_devel, did they?
>
> I don't recall anyone sending a patch to do this.  If they did,
> I apologize for missing it and I'll look through the archives to
> find it.
 It was in April last year!


> > /* Buffer descriptors used by IDMA
> > */
> > typedef struct idma_buf_desc {
>
> There you go, the IDMA buffer descriptor.  Why didn't you just
> edit commproc.h to include this, get it working, and send a patch :-)?
I will!
But since I found this message from Greg I thought it's already done.

I'll attach what I have so far. It's basicly the patch sent by Greg. I
am about to check all these defines again.

Cheers,

Steven