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Date:	Thu, 08 Feb 2007 07:27:43 -0600
From:	Timur Tabi <timur@...escale.com>
To:	Li Yang-r58472 <LeoLi@...escale.com>
CC:	Kumar Gala <galak@...nel.crashing.org>, netdev@...r.kernel.org,
	linuxppc-dev@...abs.org
Subject: Re: [PATCH 1/4] ucc_geth: Change private immrbar_virt_to_phys to
 generic iopa

Li Yang-r58472 wrote:

> No, we don't know if the BD ring is in MURAM or main memory as it is
> configurable.  iopa() is best choice to handle both case, IMHO.

The above code would only be used if the BD is in MURAM.  The "if 
bd_mem_part == MEM_PART_MURAM" would stay.

If the BD ring can be in main memory, then I don't think we should be 
using a function called "iopa" to get its physical address.  It's 
conceivable that one day, iopa() will only work on memory that's been 
ioremap'ed.

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