I mailed something similiar last night, I didn't see it on the list so
Apologies if this is a repeat.
I have a PCI Board with the following
DMA CHannel 0 -> 48K Fifo -> Backend Application -> 48K Fifo Dma Channel 1.
>From what I've read, I can only use memory returned by get_free_pages as DMA
memory. Maximum being an order of 5. Currently I have a 48K input and
outputbuffer. Is it correct behaviour to put the writing
application to sleep when it fills the input buffer, or should I use a more
elaborate memory management scheme to allow the user write large chunks (ie 1MB
2MB or so) before putting them to sleep? What is the convention?
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This archive was generated by hypermail 2b29 : Mon May 15 2000 - 21:00:10 EST