Messages in this thread | | | Subject | Re: [RFC][PATCH] TTY flip buffer SMP changes | From | Alan Cox <> | Date | Sun, 10 Oct 2004 01:32:15 +0100 |
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On Sad, 2004-10-09 at 02:42, Benjamin Herrenschmidt wrote: > That reminds me... a while ago, I toyed with the idea of having DMA > support in pmac_zilog. The case where it would work well is typically > for things that have a known sized frame. If that information was > provided down to the driver, I could setup the DMA descriptor for > that frame size & have it interrupt me when the frame is complete, > along with a timeout set to the estimated time for receiving such > a frame + X% (I was thinking +20%)
I thought the 85C30 only supported DMA for sync modes ? We have sync 8530 DMA code for ISA bus already, which I never got around to adding async too 8)
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