Discussion about iopa()

[Kumar Gala]

On Feb 9, 2007, at 5:10 PM, Timur Tabi wrote:

> Kumar Gala wrote:
>
>> It doesn't seem like it's that big of a change.  I'd rather the  
>> code clearly do different things for MURAM vs system memory for  
>> ALL accesses.
>
> Why?  MURAM acts like RAM, it just needs to be mapped first.

It does from a coherence point of view, but not from an allocation  
mechanism.

We should fix it so the driver just has to do dma_alloc_coherent,  
dma_free_coherent, and dma_map_*/dma_unmap_*

- k