From: Colin Ngam <cngam@sgi.com> Date: Thu, 15 May 2003 18:45:42 -0500 Something else I do not understand .. in the PCI world, what does Physical Memory Address got to do with 32Bit Mapped DMA Bus Address? Many platforms direct map, that is what I assumed was happening here and causing the problems. I have not seen any of the drivers broken yet - e.g. qlXXX, acenic, tg3 etc. It only works because these devices happen to allow >32-bit DMA addresses for descriptors. You will find eventually that many comodity pieces of PCI-X hardware will opt to only support 32-bit DMA addressing for descriptor tables and whatnot.Received on Thu May 15 17:09:00 2003
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