On Sat, 2005-09-17 at 18:52 +1000, Benjamin Herrenschmidt wrote: > Heh, ok. A trick for spying IOs: give the driver an unmapped area of > memory instead of the IOs it expects. You'll trap on all accesses. Then > emulate the load/store access (and keep a trace).
Yeah, we do something similar. I don't fully understand all of the code, but I can log all IO accesses with it. No DMA of course, but that doesn't really bother me since we already fully understand the DMA engine and we can use the OSX driver in PIO mode. johannes
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