Subject: Re: [PATCH 03/04] Freescale Ethernet combined driver

From: Pantelis Antoniou <[email-masked]>
Date: Tue, 10 May 2005 16:14:51 +0300

Matt Porter wrote:
> On Tue, May 10, 2005 at 08:13:48AM -0400, Dan Malek wrote:
> 
>>On May 10, 2005, at 7:17 AM, Pantelis Antoniou wrote:
>>
>>
>>>This patch replace iopa use with virt_to_phys.
>>
>>Not gonna work .....
>>
>>When you map uncached on 8xx you get a new vmalloc()
>>space.  The virt_to_xxx macros don't work on those addresses.
>>You need to use the dma_consistent() function, stash the
>>real physical address it returns and then use it where
>>appropriate.
> 
> 
> That and the use of virt_to_* and friends is deprecated by
> the DMA API. You'll never get that upstream even if it were
> a case where it did work.  That's a good thing to know for
> anybody doing other drivers...
> 
> -Matt
> 
> 

OK then.

What's the recommended function to call to go from a
virtual -> physical address, but without doing a cache
flush/invalidate?

Regards

Pantelis