DMA to user space?

Thomas 'Dent' Mirlacher (dent@cosy.sbg.ac.at)
Tue, 6 Jul 1999 16:07:57 +0200 (CEST)


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hi,

i'm looking for a solution to issue a DMA directly from a peripheral
interface card to user space, and i'm wondering if there are any ongoing
projects/implementations/plans to put that stuff into 2.3.X

possible (naive) solutions:

o Robert Kaisers udma patch (or something similar)
o adding a syscall which does something like kmalloc (..., GFP_DMA)
... because it would be nice to have a concaternated
physical memory to dma without the need to scatter/gather
o something completely different (and more elegant ways ...)

thanks for any response

++dent

- --
Thomas Mirlacher Student of ComputerScience, University of Salzburg
dent@cosy.sbg.ac.at http://www.cosy.sbg.ac.at/~dent

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