Async DMA question regarding dma_async_memcpy_buf_to_buf

[Bruce_Leonard at selinc.com]

Scott Wood <scottwood at freescale.com> wrote on 11/24/2008 01:28:20 PM:

> Bruce_Leonard at selinc.com wrote:
> > Maybe (with you clarification) this is starting to make sense.  It 
doesn't 
> > matter if the "src" is host memory or PCI space.  What the "src" and 
it's 
> > DMA_TO_DEVICE mapping is saying to the kernel is "this data needs to 
be 
> > moved into the DMA engine", while the "dest" and it's DMA_FROM_DEIVCE 
> > mapping is telling the kernel "this data needs to be moved from the 
DMA 
> > engine".
> 
> Right.
> 
> -Scott

Thank you sooooo much.  Now it makes sense.  I guess I was getting bogged 
down in the hardware sense of "src" and "dest"

Thanks again.

Bruce