In these configuration we expect to have large amounts of memory (> 4G)
and thus will bounce via swiotlb some region of PCI address space.
The outbound windows were wasting 512M of address space by leaving a
gap between the top of the outbound window and the 4G boundary. By
moving the top of the outbound window up to the 4G boundary we can
reclaim the vast majority of the 512M (minus space needed for PEXCSRBAR)
and thus reduces the amount of memory we have to bounce.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Between the addition of the ecm/mcm law nodes and the fact that the
get_immrbase() has been using the range property of the SoC to determine
the base address of CCSR space we no longer need the reg property at
the soc node level. It has been ill specified and varied between device
trees to cover either the {e,m}cm-law node, some odd subset of CCSR
space or all of CCSR space.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
The new dts places most of the devices in physical address space
above 32-bits, which allows us to have more than 4GB of RAM present.
Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Kumar Gala