Re: [PATCH V5 3/4] ARM: Xilinx: base header files and assembly macros

[Arnd Bergmann]

On Wednesday 30 March 2011, John Linn wrote:
> Yes that makes sense.  We don't have immediate plans for PCI and 
> I was assuming when we add PCI we would need to change that.  
> 
> If you think I shouldn't put it off then I'll fix it now.  My 
> preference was to get the platform supported, then add more features.

Getting it fixed properly depends a bit on the PCI implementation.
I've been planning to clean up this part of the ARM architecture
for some time and I can probably do it for one more platform when
I get to it.

My idea for the multiplatform kernel is to have a global I/O space
window (maybe 1 MB) that is in the same location in the virtual
address space all the time, so any platform that wants to support
PCI with direct-mapped I/O space can simply map it in there
at boot time.

	Arnd
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