Re: MPIC ISU

[vb <vb@vsbe.com>]

Kumar,

thank you for your reply!

On Jan 18, 2008 7:54 AM, Kumar Gala <galak@kernel.crashing.org> wrote:
>
> >
> > What is it, at the very least - what does ISU stand for?
> >
> > I would really appreciate any hints,
>
> Interrupt service unit.  I believe its an IBM concept.
>
> For 8245 can you look at what the linkstation port is doing and mimic
> that.  I believe its an 8245 or 8241 so it should be close to what you
> need.
>

what platform is linkstation and what kernel version can I find it in?


TIA,
/vb

>          mpic = mpic_alloc(dnp, paddr, MPIC_PRIMARY |
> MPIC_WANTS_RESET, 4, 32, " EPIC     ");
>          BUG_ON(mpic == NULL);
>
>          /* PCI IRQs */
>          mpic_assign_isu(mpic, 0, paddr + 0x10200);
>
>          /* I2C */
>          mpic_assign_isu(mpic, 1, paddr + 0x11000);
>
>          /* ttyS0, ttyS1 */
>          mpic_assign_isu(mpic, 2, paddr + 0x11100);
>
>          mpic_init(mpic);
>
> - k
>