> > You said before that we should be fine allocating the DMA rings below > > 1GB and then doing arbitrary DMA buffers. If this is the case, then imho > > we should just do that, the six DMA rings or whatever we should be able > > to fit into low memory. > > No it isn't right. When I booted with a mem=512M option, the DMA error still > occurred as long as I > didn't allocate the ring buffer with the GFP_DMA flag. Allocating below the 1 > GB boundary is not > sufficient.
> It may be even worse. They seem to have made this device look like an ISA > device and force the ring > buffer to below the 16 MB boundary. Hmm. No, that definitely doesn't make sense. There must be something else going wrong like bad windowing in the PCI(e) core. johannes
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