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authorPaul Burton <paul.burton@imgtec.com>2013-11-08 11:18:45 +0000
committerDaniel Schwierzeck <daniel.schwierzeck@gmail.com>2013-11-09 17:21:01 +0100
commitf3ac866c78f7f0d91eb345967350830d46c3a563 (patch)
tree2525f245b31a8988cd5db6dab83dd9022bcc9793 /board/xes
parenta95400411b0938b1ef6d87090f4b22026c56e55b (diff)
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pcnet: add cache flushing & invalidation
Ensure that the view of memory from the CPU & the ethernet controller is coherent at the various points where they exchange data. This prevents stale data from being transmitted or received, and prevents the driver from getting stuck waiting for the ethernet controller to update descriptors when in reality it has but the old values are being read from cache. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
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