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Date: Mon, 24 Nov 2008 15:28:20 -0600
From: Scott Wood <scottwood@freescale.com>
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To: Bruce_Leonard@selinc.com
Subject: Re: Async DMA question regarding dma_async_memcpy_buf_to_buf
References: <OF5164841E.9891D22C-ON8825750B.0074160D-8825750B.007587B6@selinc.com>
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Bruce_Leonard@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