Re: [PATCH 1/4] ucc_geth: Change private immrbar_virt_to_phys to generic iopa

On Feb 8, 2007, at 1:06 AM, Li Yang-r58472 wrote:

quoted

quoted

MURAM is a mmio region so it don't share the characteristic of main
memory that phy_addr = virt_addr - PAGE_OFFSET.  While they can
both be
mapped through page table using iopa().

Right, so when do you know if you'll be using MURAM or normal
memory?  Why not just keep around a token that is the physical
address at the point you make the decision of MURAM vs normal memory.

Yes, that can be a way.  But as the virt to phy mapping is only used
once, it's nothing bad to do it this way.

The problem as I stated before with using iopa() is that its not  
supported across platforms.

- k