[openib-general] MT25218 (aka Arbel memfree) support

[Michael S. Tsirkin]

Hello!
Quoting r. Roland Dreier (roland at topspin.com) "Re: [openib-general] MT25218 (aka Arbel memfree) support":
>     Michael> What would be the best way to organise this code?  I
>     Michael> guess could be two thinkable ways to do this:
> 
>     Michael> 1. Add the functionality to the mthca module, use a
>     Michael> run-time flag to describe hardware differences.  Thus,
>     Michael> the same module will handle devices of all types.
> 
> I've already started adding some memfree support ot the mthca module
> (following this approach).  So far the code does initialization
> through MAP_FA and RUN_FW, and calls QUERY_DEV_LIM.

Yep, I see that. I think its a valid approach - although I thought
that it is better to put the memfree code in a separate file.

I guess we can always optimise to compile-time checks it later.

> By the way, there's no need for a runtime flag, the PCI device ID is
> sufficient to distinguish Tavor mode from Arbel mode.
> 
>  - Roland

How do you mean? I see you use the hca_type flag?

MST