David Miller wrote:
I don't think you'll get very far debugging the ESP driver.
More likely DMA is being corrupted or similar, and this
means you should fiddle around in the sun4d IOMMU support
code for SBUS and make sure nothing fishy is going on there.
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A year or so ago I did a few patches for Sun4d and there was a note in
the iommu code about sun4d not having a register that was used for
scratch data in sun4m.
Could this bug be back ?
Sorry to be vague, this is from memory.
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