On Sat, Mar 14, 2009 at 09:46:21PM -0400, Kyle McMartin wrote: > I don't know if the newer cards can do DAC, but if they can, then we > could at least use the distributed GMMIO (greater-than-4GB mmio) > range to map a wide swath to every rope, which /would/ work. > > (My C8000 won't boot with a PCI r500 card in it, it fails during PDC > init, sadly. I think it was a X1300 or something.) > Ah, more stuff I remembered. Pluto's GMMIO_DIST_BASE register has useful features that let it clip the top 32-bits of the transaction address off, so you can give each rope a full 4GB mmio space and a bit to turn off the port-IO space from each range, reclaiming another 64MB for each rope. I should pick up another couple models of PCI r[56]00 to try in the C8000... not sure why the firmware choked on the old r500. -- To unsubscribe from this list: send the line "unsubscribe linux-parisc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
