There is a DMA driver in the MV Linux kernel, you will need to write a kernel
driver to make use of it.
See arch/arm/mach-davinci/dma.c
--
Jon Povey, Design Engineer
[EMAIL PROTECTED] | +44(0)1280 825983
________________________________
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of ?? ?
Sent: 30 October 2008 00:32
To: [email protected]
Subject: DaVinci-ARM-DMA
Hello,everyone:
I have a question and I need your help.
I don't ask how to use DMA on DSP , that's very easy.
My question is : on the ARM9 side, and the operating system is
Montavista Linux ,I want to copy date from a block of memory to another block
of memory , people usually use memcpy() to finish it.But that's not high
efficiency, I want to do it efficiently .For example, can I copy the date
from a block of memory to another block of memory in Linux using DMA ?How
should I do this ?Or,do you have other efficiency idea to finish this job
efficiently?
Thanks!
huolang
China
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