Re: PCIE

[Grant Grundler <grundler@parisc-linux.org>]

On Sun, May 27, 2007 at 05:01:02AM +0400, Manu Abraham wrote:
> David Miller wrote:
> > True, on sparc64 PCI-E controllers, for example, the MSI vector is
> > received by the PCI-E host controller, and the host controller turns
> > this into a cpu format interrupt packet for the system bus.
> 
> Err .. why would a PCIe controller be CPU specific ? Looking at Figure
> 1-6 of the spec, i think it should be CPU independent ?

To be pedantic, the PCIe controller isn't really CPU specific.
It's host bus specific. ie the PCI-e controller is a bridge between
whatever chipset defines the "cache coherency domain" and the PCI-e devices.

> Excuse me for my ignorance, just that my head has begun to reel after
> reading through PCIe 1.0 and the device specs, still being inconclusive
> how to proceed.

no problem...I suspect you need to figure out why DTL-MMIO isn't working.
I have never touched DTL and can't be of much help with that.

hth,
grant

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