Re: [Etherboot-developers] Descriptor alignment question
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marty_connor,
stefanhajnoczi
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From: <ke...@us...> - 2003-03-07 22:31:32
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>I have not looked at the sundance driver in a bit, but I seem to be >still wondering why it is so slow. I was never sure whether the >descriptor was properly aligned. I think your alignment looks ok. Usually it will not work if misaligned. What I suspect is that the method for determining if a packet is available is not reliable. There should be a bit that indicates there is something in the receive buffer. If necessary you may have to look at a different register, maybe RxStatus. This is the main difference between interrupt and polled operation. |