On Tue, Sep 18, 2007 at 09:34:31AM -0500, Rune Torgersen wrote: > > -----Original Message----- > > From: Scott Wood > > Sent: Monday, September 17, 2007 11:58 AM > > > > The 8272 (and presumably other PCI PQ2 chips) appear to have the > > same issue as the 83xx regarding PCI streaming DMA. > > > > Can you explain what this isssue is? We're using a 8280 and have had > some PCI busmaster DMA problems, and wonder if it is related.
I'm not sure of the details, just that I get corrupted PCI DMA if I don't set it. BTW, if the problems you're seeing include lockups when using PCI DMA, check out the end of the PCI initialization in arch/powerpc/boot/cuboot-pq2.c; it requires certain non-default arbiter settings. -Scott _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
