Re: [PATCH 0/2] Add IPMI support for powernv powerpc machines

[Benjamin Herrenschmidt <benh@kernel.crashing.org>]

On Mon, 2014-11-10 at 17:01 +1100, Alistair Popple wrote:
> Ben,
> 
> > 
> > Our OPAL interface can only do one at a time ? Because our underlying FW
> > driver already has a queue ..
> 
> The OPAL interface supports sending more than one message at a time using the 
> underlying FW queue as you suggest. However in theory the interface doesn't 
> make any response order guarantees, but in practice they should be ordered as 
> our BMC doesn't send out-of-order responses.

Can't we put some ID in the response message ? OPAL messages have
room...

Cheers,
Ben.

> Regards,
> 
> Alistair
> 
> > > > I'll look at doing that.  If that is the case, then your NULL check
> > > > for current message should probably be a BUG_ON().
> > > 
> > > OK, I'll update this when the msghandler bit is implemented.
> > > 
> > > > Do you need to handle any BMC flags?  Particularly incoming events?
> > > 
> > > Not at this stage - we may in future though.
> > > 
> > > Cheers,
> > > 
> > > 
> > > Jeremy
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> > 
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