[PATCH] Cell interrupt rework (final)
hch at lst.de
Sat Oct 7 18:55:24 EST 2006
On Fri, Sep 29, 2006 at 03:00:29PM +1000, Benjamin Herrenschmidt wrote:
> This patch reworks the cell iic interrupt handling so that:
> - Node ID is back in the interrupt number (only one IRQ host is created
> for all nodes). This allows interrupts from sources on another node to
> be routed non-locally. This will allow possibly one day to fix maxcpus=1
> or 2 and still get interrupts from devices on BE 1. (A bit more fixing
> is needed for that) and it will allow us to implement actual affinity
> control of external interrupts.
> - Added handling of the IO exceptions interrupts (badly named, but I
> re-used the name initially used by STI). Those are the interrupts
> exposed by IIC_ISR and IIC_IRR, such as the IOC translation exception,
> performance monitor, etc... Those get their special numbers in the IRQ
> number space and are internally implemented as a cascade on unit 0xe,
> class 1 of each node.
Looks good to me.
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