[Skiboot] [PATCH V6 3/5] capi: Enable capi mode for PHB4

[Michael Neuling]

On Mon, 2017-06-12 at 17:48 +0200, Christophe Lombard wrote:
> > From: Christophe Lombard <christophe_lombard at fr.ibm.cm>
> 
> Enable the Coherently attached processor interface. The PHB is used as
> a CAPI interface.
> CAPI Adapters can be connected to either PEC0 or PEC2. Single port
> CAPI adapter can be connected to either PEC0 or PEC2, but Dual-Port
> Adapter can be only connected to PEC2
>    CAPP0 attached to PHB0(PEC0 - single port)
>    CAPP1 attached to PHB3(PEC2 - single or dual port)
> As we did for PHB3, a new specific file 'phb4-capp.h' is created to
> contain the CAPP register definitions.

<snip>

> +	/* PEC Phase 3 (PBCQ) registers Init */
> > +	/* poll cqstat
> > +	 * CAPP0 attached to PHB0(PEC0)
> > +	 * CAPP1 attached to PHB3(PEC2)
> > +	 */
> > +	if (p->index == 0) {
> > +		/* PEC 0 */
> > +		offset = 0x40;
> > +	} else if (p->index == 1 || p->index == 2) {
> > +		/* PEC 1 */
> > +		offset = 0x80;
> 

The commit message suggests PEC1 is not supported.  So why don't we error out
here?

Mikey

> +	} else {
> > +		/* PEC 2 */
> > +		offset = 0xC0;
> > +	}
>