On 15/05/12 16:41, Russell King - ARM Linux wrote:
On Tue, May 15, 2012 at 04:07:59PM +0100, Ben Dooks wrote:
quoted
I think it was because that PCI was initialised early and requires a
large mapping space. It is very likely to be legacy kernel stuff that
people have kept copying through.
No. PCI needs nothing other than access to the configuration space, and
the PCI IO window. There has _never_ been any hard requirement to map
PCI memory in map_io() because that is _always_ done by drivers calling
ioremap().
What about inb, outb and their related functions?
--
Ben Dooks http://www.codethink.co.uk/
Senior Engineer Codethink - Providing Genius